JP2020087506A - Heating cooker, built-in type combined heating cooker and kitchen furniture - Google Patents

Abstract

To provide a thin-shape induction heating cooker, a combined heating cooker comprising three different heating sources including microwave heating, and kitchen furniture with the same.SOLUTION: A heating cooker comprises an upper unit and a lower unit which are installed in kitchen furniture. The upper unit includes: an IH coil which heats a heated material on a top plate; an inverter circuit board which supplies power to the IH coil; a cover which separates the IH coil and the inverter circuit board; and a first cooling fan which introduces cooling air from the outside and supplies a cooling wind to the inverter circuit board. The lower unit includes: a heating chamber which is heated by microwaves and an electric heater; a microwave heating device which supplies microwaves into the heating chamber; and a blowing fan which introduces air for cooling the microwave heating device from the outside. A reinforcing member is provided for coupling both the upper unit and the lower unit from the outside of both in a state where the upper unit overlaps the lower unit.SELECTED DRAWING: Figure 7

Description

The present invention relates to a heating cooker for heating an object to be heated such as a pot placed on a top plate, a built-in combined-type heating cooker having two or more types of heating sources, and a kitchen provided with these heating cookers. It relates to kitchen furniture such as counters.

There are three types of induction heating cookers.
One of them is a so-called "built-in type" that is installed in kitchen furniture such as a kitchen counter.
The second is a "fixed type" that is used by being placed at a predetermined position of kitchen furniture, such as a gas stand (also called "gas combustion type table").
The third type is a small, portable "tabletop" that is used by being placed at an arbitrary position on a dining table or the like.

Since the "built-in" induction heating cooker is installed in kitchen furniture, the external dimensions must be designed according to the standard of general kitchen furniture. The degree of freedom of design is much less than that of

Further, in the built-in induction heating cooker, there is one in which the heating cooker alone is installed in a storage space of kitchen furniture, and an article storage (storage space) is secured below the heating cooker (for example, See Patent Document 1).

In addition, some built-in induction heating cookers include a grill chamber (also referred to as an "oven chamber" or a "heating chamber") that is heated by an electric heater inside the main body so that the range of cooking can be expanded. .. In the grill, it is possible to open a door provided at the front, insert an object to be heated such as fish and close the door, and heat by radiant heat of the electric heater for cooking (for example, Patent Documents 2 and 3). reference).

The induction heating cooker of Patent Document 2 has at least two heating means arranged in a housing and having an induction heating coil (hereinafter referred to as “IH coil”) for heating an object to be heated, and covers the upper surface of the heating means. It has a top plate on which a cooking pot to be heated is placed, and an inverter circuit board (electronic board) on which electronic parts for supplying electric power to the IH coil are mounted, and the electronic parts on the inverter circuit board and A cooling fan for cooling the IH coil, a first cooling flow path for guiding cooling air from the cooling fan to the periphery of the inverter circuit board, and a second cooling flow path for guiding cooling air from the cooling fan to the IH coil. And a circuit board on which at least a part of a control circuit for controlling the inverter circuit and a power supply circuit for supplying electric power to the inverter circuit is provided in the second cooling flow path. is there.

In the above-mentioned Patent Document 3, it is proposed that a grill unit including a grill cabinet be hung so as to be separable from the induction heating cooking unit by a fixing means such as a metal fitting. However, in the case of Patent Document 3, the thickness (height dimension) of the housing (outer shell case) of the induction heating cooking unit is the thickness of the placing portion of the kitchen furniture (for example, a standard dimension of 40 mm). It is much larger than, and protrudes downward.

Further, there is also proposed a built-in induction heating cooker configured by combining two units, an upper unit and a lower unit. The upper unit has a plurality of IH coils and an inverter circuit board for controlling them, and the lower unit has a grill cabinet and electric components. The lower unit is provided with one fan motor and a cooling fan rotated by the fan motor, and the cooling circuit is rotated by the fan motor so that the cooling fan blows the inverter circuit of the upper unit. A configuration has also been proposed in which the substrate and the electrical components of the lower unit are cooled in parallel (see, for example, Patent Document 4).

In addition, in the built-in induction heating cooker, cooling air is introduced from the outside of the housing into the housing (also called the “outer shell case”) supported by kitchen furniture, and induction is performed by the cooling air. A configuration has been proposed in which a driving circuit unit of a heating coil (hereinafter referred to as “IH coil”) and the IH coil are cooled in a diagonal direction (for example, refer to Patent Document 5). This is a configuration in which the drive circuit unit and the IH coil are uniformly and efficiently cooled.

Further, as a heat source for a composite heating cooker, various heat sources having two different heating methods, induction heating and microwave heating, have been conventionally proposed. However, all of them are based on the "stationary type" (see, for example, Patent Documents 6 and 7).

Furthermore, three different heating methods (induction heating and dielectric heating) are used, namely, induction heating in the ceiling of the cooking device, induction heating in the heating chamber, and microwave heating in the heating chamber. A composite heating cooker in which the heating mode can be selected alternatively has also been proposed. However, this was also based on the "stationary type" in which the overall size and shape of the heating cooker can be determined much more freely (compared to the built-in type) (see Patent Document 8).

Japanese Patent Laid-Open No. 2015-213628 (page 5, FIG. 1) Japanese Unexamined Patent Publication No. 2008-53075 (page 5, FIG. 8) JP-A-5-251165 (page 1, FIG. 2) JP-A-11-87038 (page 3, FIG. 1) JP-A-5-21148 (page 1, FIG. 2) Japanese Utility Model Publication No. 53-44345 (page 1, FIG. 2) Japanese Utility Model Publication No. 53-44346 (page 1, FIG. 3) JP-A-52-37242 (page 1, FIG. 1)

The first problem with the conventional built-in heating cooker is that the height of the heating cooker is large and there is a problem in effectively utilizing the space in the kitchen furniture below the heating cooker. Therefore, for example, it has been a problem that the height of the article storage cannot be increased.
On the other hand, in the stationary heating cooker, if the height of the heating cooker is large, as in the first problem described above, when placed on a kitchen counter or the like, an object to be heated such as a pot is placed, There was a problem that it was difficult to work when lowering or moving.

Furthermore, there is a second problem that it is difficult to install a built-in type composite heating cooker using microwave heating in kitchen furniture such as a kitchen counter. That is, although a heating chamber having an electric heater (also referred to as a "grill chamber") has been provided, a device utilizing microwave heating has not been put into practical use. As a background of this, when using microwaves, a microwave oscillator typified by a magnetron, a cooling fan for cooling the oscillator, a waveguide for guiding the microwaves into the heating chamber, a microwave into the heating chamber. Important electrical components such as an antenna device to be diffused, structures, and the like are difficult to miniaturize due to the nature of handling microwaves, and there is a situation in which measures such as prevention of microwave leakage are necessary.

Furthermore, as a third problem, there is proposed a built-in type composite cooker (see Patent Document 2) including an upper unit having an induction heating source and a lower unit having a heating chamber for heating by radiant heat. However, there is a big problem in adding a microwave heating function and improving it so that it can be applied to a wider range of cooking. For example, since it is necessary to hermetically close the heating chamber in order to prevent microwaves of a different nature from those of the induction heating source and electric heater from leaking from the heating chamber, the induction heating cooking unit (upper part) temporarily supported by kitchen furniture (upper part) Unit) and a lower unit having a heating chamber to which microwaves are supplied, when constructing a composite heating cooker, the structure of the two units is placed inside the kitchen furniture. In the installed state, it is necessary to maintain the performance and reliability of the built-in combined cooker as a whole.

A fourth problem is to obtain kitchen furniture with high convenience that can be widely applied to various types of cooking by using an induction heating source and a microwave heating source.

The present invention has been made to solve the above-mentioned problems, and is a convenient cooker with a thin outer shell case and a convenient built-in combined induction heating cooker that can use multiple types of heat sources. An object of the present invention is to provide a kitchenware and kitchen furniture equipped with these.

A heating cooker according to a first aspect of the present invention,
It has a flat body with a top plate on which the object to be heated is placed,
An IH coil for heating an object to be heated on the top plate, an inverter circuit board disposed below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board inside the main body. A cover, and a first cooling fan for introducing cooling air from the outside of the main body,
The first cooling fan has rotating blades that rotate about a vertical axis, and faces an inlet of a first air passage formed between the inverter circuit board and the cover,
The first cooling fan is configured to supply cooling air from an inlet at one end of the first air passage to an outlet at the other end.

The heating cooker according to the second invention relating to the first problem is
It has a flat body with a top plate on which the object to be heated is placed,
Inside the main body, a left side IH coil and a right side IH coil, which are respectively arranged at two positions on the left and right sides for heating an object to be heated on the top plate, are common to these two IH coils, and An inverter circuit board disposed below the IH coils, a cover installed between the two IH coils and the inverter circuit board, and a cover installed on the left side wall surface of the main body and formed on the housing. A first cooling fan for introducing cooling air from the ventilation hole,
The cover is installed in series from the outlet of the first cooling fan to the right side of the left side of the IH coil,
The first cooling fan has rotating blades that rotate about a vertical axis, and faces an inlet of a first air passage formed between the inverter circuit board and the cover,
The first cooling fan supplies cooling air from an inlet at a left end of the first air passage toward an outlet at a right end thereof.
An exhaust window is provided in the inner rear portion of the main body, where the cooling air that has exited from the first air passage is introduced after passing through the space above the cover,
The formation position of the exhaust window is on the left side of the position of the outlet of the first air passage.

The heating cooker according to the third aspect of the present invention is
It has a flat body with a top plate on which the object to be heated is placed,
An IH coil for heating an object to be heated on the top plate, an inverter circuit board disposed below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board inside the main body. A cover, a first cooling fan and a second cooling fan that introduce cooling air from the outside of the main body, and an input operation unit that receives a user's operation input,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan faces an inlet of a first air passage formed between the inverter circuit board and the cover, and the first cooling fan is provided at one end of the first air passage. A configuration for supplying the first cooling air from an inlet to an outlet at the other end,
The second cooling fan is located closer to the input operation unit than the first cooling fan, and is configured to supply the second cooling air to the input operation unit.

A heating cooker according to a fourth invention relating to the first problem,
It has a flat body with a top plate on which the object to be heated is placed,
An IH coil for heating an object to be heated on the top plate, an inverter circuit board disposed below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board inside the main body. A cover, a first cooling fan that introduces cooling air from the outside of the main body, and a power supply circuit board that receives power from a commercial power supply to generate a necessary power supply,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan faces an inlet of a first air passage formed between the inverter circuit board and the cover, and the first cooling fan is provided at one end of the first air passage. It is a configuration that supplies cooling air from one inlet to the outlet at the other end,
The power supply circuit board is arranged on the opposite side of the first cooling fan with the cover interposed therebetween.

The heating cooker according to the fifth aspect of the present invention,
It has a flat body with a top plate on which the object to be heated is placed,
An IH coil for heating an object to be heated on the top plate, an inverter circuit board disposed below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board inside the main body. A cover, and a first cooling fan for introducing cooling air from the outside of the main body,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan has an intake port on a lower surface of a fan case, and has an outlet on a side surface for blowing cooling air,
A first air passage formed below the cover on a first horizontal plane that crosses the vertical center of the air outlet, a heat sink arranged on the upper surface of the inverter circuit board, and mounted on the inverter circuit board. Electrical components and
An exhaust window for discharging the cooling air from the first cooling fan after passing through the IH coil is arranged on a second horizontal surface above the first horizontal surface.

The built-in type composite heating cooker of the sixth invention relating to the second problem is
Which is installed in kitchen furniture,
An upper unit having a first heating source for heating the object to be heated via a top plate on which the object to be heated is placed, and being supported by the kitchen furniture;
A lower unit that is installed below the upper unit and that includes a heating chamber whose front opening is openably and closably closed by a door;
The lower unit includes a microwave heating device that supplies microwaves to the heating chamber, an oven heating device that heats the heating chamber, and a cooling fan that cools the microwave heating device.
The microwave generation source of the microwave heating device is arranged along any one of the left and right side wall surfaces of the heating chamber, and the oscillating portion of the microwave generation source projects toward the back side of the heating chamber. Installed sideways,
On the back side of the heating chamber, a power supply port communicating with the inside of the heating chamber and an antenna case into which microwaves from the microwave generation source are introduced are provided,
In the antenna case, a rotatable antenna is arranged for propagating the microwave oscillated from the microwave generation source into the space inside the heating chamber through the power supply port.

The built-in type composite cooker of the seventh invention relating to the second problem is
Which is installed in kitchen furniture,
An upper unit having an induction heating source that heats the object to be heated through a top plate on which the object to be heated is placed, and an upper unit supported by the kitchen furniture,
A lower unit that is installed below the upper unit and that includes a heating chamber whose front opening is openably and closably closed by a door;
The lower unit is supplied with electric power from the upper unit and supplies a microwave to the heating chamber, a microwave heating device that heats the heating chamber, and a microwave heating device that cools the microwave heating device. For cooling fan,
The microwave generation source of the microwave heating device is arranged along one right side wall surface or one left side wall surface of the heating chamber, and the microwave generation source is laterally oriented so that the oscillating portion of the microwave generation source protrudes to the back side of the heating chamber. Installed in
An antenna case into which microwaves from the microwave source are introduced is provided on the back side of the heating chamber,
In the antenna case, there is a rotatable antenna for propagating the microwave oscillated from the microwave generation source into the space inside the heating chamber through a power supply port provided on the back surface of the heating chamber. Place and
The operations of the induction heating source, the microwave heating device, the oven heating device, and the cooling fan are controlled by an integrated control device on the upper unit side.

The built-in type composite cooker of the eighth invention relating to the second problem is
Which is installed in kitchen furniture,
An upper unit having an induction heating source that heats the object to be heated through a top plate on which the object to be heated is placed, and an upper unit supported by the kitchen furniture,
A lower unit that is installed below the upper unit and that includes a heating chamber whose front opening is openably and closably closed by a door;
The lower unit includes a microwave heating device that receives power from the upper unit and supplies microwaves to the heating chamber, and an oven heating device that heats the heating chamber,
The microwave heating device includes a microwave heating control unit, a microwave generation source, and a first inverter circuit board that supplies high-frequency power to the microwave generation source,
The oven heating device includes a heating chamber control unit,
The microwave generation source and the first inverter circuit board are arranged along one side wall surface of the heating chamber and apart from each other in the front-rear direction,
Below the first inverter circuit board and below the heat radiation portion of the microwave generation source, air is sucked from the outside of the lower unit, and the air is sucked into the first inverter circuit board and the heat radiation portion. A front side cooling fan and a rear side cooling fan, which are individually supplied to the parts, respectively, are arranged.

The built-in type composite cooker of the ninth invention relating to the second problem is
The kitchen furniture includes a first heating source that heats the object to be heated through a top plate on which the object to be heated is placed, and a flat body whose top opening is closed by the top plate. An upper unit supported by
A heating chamber to which microwaves are supplied, and a lower unit containing a microwave source,
A connecting member that connects the upper unit and the lower unit,
The connecting member is installed in a state of being close to or in close contact with at least one side wall surface of the lower unit and at least one side wall surface of the upper unit, and is coupled to both the lower unit and the upper unit. It is a composition.

The built-in type composite cooker of the tenth invention relating to the third problem is
The kitchen furniture includes a first heating source that heats the object to be heated through a top plate on which the object to be heated is placed, and a flat body whose top opening is closed by the top plate. An upper unit supported by
A heating chamber to which microwaves are supplied; and a lower unit having a microwave generation source built in a lower case,
The upper case constituting the outer shell of the main body and the lower case are each formed of a thin metal plate,
A lateral vertical wall extending in the vertical direction is formed at the peripheral edge of the upper case,
The upper surface of the lower case is entirely opened, and the upper unit and the lower unit are connected to each other with the upper case fitted inside the opening.

The built-in type composite cooker of the eleventh invention relating to the second problem is
A top plate on which the object to be heated is placed; an induction heating source that heats the object to be heated through the top plate; and a flat upper case whose upper surface has an opening closed by the top plate. And an upper unit supported by kitchen furniture,
A heating chamber to which microwaves are supplied; and a lower unit having a microwave heating device incorporated in a lower case,
When the upper case is placed on the lower case, the bottom wall of the upper case doubles as the ceiling surface of the lower case.

The built-in type composite cooker of the twelfth invention relating to the third problem is
A top plate on which an object to be heated is placed; an induction heating source that heats the object to be heated through the top plate; and a flat upper case whose upper surface opening is closed by the top plate. And an upper unit supported by kitchen furniture,
A lower unit containing a heating chamber that is heated from above and from below by an upper heater and a lower heater,
The lower unit includes a lower case that forms an outer shell, a door that opens and closes the opening of the heating chamber, an arm that supports the door, and a door open/close detection mechanism,
The lower unit includes a microwave generation source on the right side or the left side of the heating chamber, and a case containing an inverter circuit board that supplies high-frequency power to the generation source,
The case is arranged on the front side of the microwave generation source,
Inside the lower unit, a space is provided on the front side of the case,
In the space, the arm and the door open/close detection mechanism are accommodated in a state where they are adjacent to each other and the door open/close detection mechanism is located outside.

The kitchen furniture of the thirteenth invention related to the fourth problem has an installation port on the upper surface, and the heating cooker according to any one of the first invention to the fifth invention is installed in the installation port. This is the configuration.

The kitchen furniture of the fourteenth invention related to the fourth problem has an installation opening on the upper surface, and the built-in composite heating according to any one of the sixth invention to the twelfth invention, in the installation opening. It is a configuration with a cooker installed.

ADVANTAGE OF THE INVENTION According to this invention, the installation space which a heating cooker occupies can be reduced, or the highly convenient heating cooker which can respond|correspond to various heating cooking, a composite type induction heating cooker, and kitchen furniture can be provided.

It is a perspective view which shows the whole kitchen furniture by which the induction heating cooking appliance which concerns on Embodiment 1 of this invention is installed. It is a perspective view which shows the state of the kitchen furniture before incorporating the induction heating cooking appliance shown in FIG. It is a schematic diagram which shows the intermediate stage of the work which incorporates the induction heating cooking appliance shown in FIG. 1 in kitchen furniture. It is a longitudinal cross-sectional schematic diagram which shows the dimensional relationship of the kitchen furniture of FIG. 1, and an induction heating cooking appliance. It is a longitudinal cross-sectional schematic diagram which expands and shows a part of the front of the kitchen furniture shown in FIG. It is a top view of the induction heating cooker shown in FIG. It is a longitudinal cross-sectional view at the time of cutting the induction heating cooker of FIG. 1 by the ZZ line of FIG. It is the longitudinal cross-sectional view which cut|disconnected the induction heating cooking appliance of FIG. 1 by the ZZ line of FIG. 6, and showed the flow of the cooling wind. It is a longitudinal cross-sectional view at the time of cutting the induction heating cooker of FIG. 1 by the WW line of FIG. It is a longitudinal cross-sectional view at the time of cutting the induction heating cooker of FIG. 1 by the YY line of FIG. It is a longitudinal cross-sectional view at the time of cutting the induction heating cooker of FIG. 1 by the VV line of FIG. It is a longitudinal cross-sectional view at the time of cutting the induction heating cooker of FIG. 1 by the XX line of FIG. FIG. 3 is a simplified plan view for explaining an operation unit of the upper unit of the induction heating cooker of FIG. 1. FIG. 2 is a simplified cross-sectional view showing the flow of cooling air inside the upper unit of the induction heating cooker of FIG. 1. It is a block diagram which shows the main control-related parts of the induction heating cooking appliance of FIG. It is explanatory drawing which shows the main cooling air paths of the induction heating cooking appliance of FIG. It is a circuit diagram which shows the detail of the inverter circuit of the induction heating cooker of FIG. It is a flowchart 1 for demonstrating the control operation of the induction heating cooking appliance of FIG. It is a flowchart 2 for demonstrating the control operation of the induction heating cooking appliance of FIG. It is the flowchart 3 for demonstrating the control operation of the induction heating cooking appliance of FIG. It is a flowchart 4 for demonstrating the control operation of the induction heating cooking appliance of FIG. It is a flowchart 5 for demonstrating the control operation of the induction heating cooking appliance of FIG. It is a flowchart 5 for demonstrating the control operation of the induction heating cooking appliance of FIG. 2 is a table showing a correspondence relationship between a cooling fan of the induction heating cooker of FIG. 1 and types of cooking. It is a flow chart explaining the control operation at the time of performing fried food cooking (automatic) which is one kind of induction heating cooking in the induction heating cooking appliance of Drawing 1. It is a built-in type induction heating cooking appliance which concerns on Embodiment 2 of this invention, and is a perspective view of the state before installation to kitchen furniture. It is a perspective view which shows the state which opened the door in the induction heating cooking appliance shown in FIG. It is a front view of the induction heating cooker shown in FIG. It is a top view of the induction heating cooking appliance shown in FIG. It is a right view of the induction heating cooking appliance shown in FIG. FIG. 27 is a left side view of the induction heating cooker shown in FIG. 26. It is a back surface (rear surface) figure of the induction heating cooking appliance shown in FIG. FIG. 27 is a bottom view (lower surface) of the induction heating cooker shown in FIG. 26. It is a ZZ line longitudinal cross-sectional view of the induction heating cooker shown in FIG. It is a YY line longitudinal cross-sectional view of the induction heating cooker shown in FIG. FIG. 30 is a vertical cross-sectional view taken along line YY of the induction heating cooker shown in FIG. 29, showing a state in which the door is open. FIG. 30 is a vertical cross-sectional view taken along line XX of the induction heating cooker shown in FIG. 29. It is a perspective view which shows the whole upper unit in the induction heating cooking appliance shown in FIG. FIG. 27 is a perspective view of the upper unit with the top plate removed in the induction heating cooker shown in FIG. 26. FIG. 27 is a perspective view of the upper unit with the top plate and the IH coil removed in the induction heating cooker shown in FIG. 26. FIG. 27 is a perspective view of the upper unit with the top plate, the IH coil and the cover removed in the induction heating cooker shown in FIG. 26. FIG. 42 is a reference perspective view showing the flow of cooling air in FIG. 41. It is a top view, a front view, a right side view, and a rear view of the upper unit in the induction heating cooker shown in FIG. FIG. 27 is a plan view, a front view, a right side view and a rear view of the upper unit shown in FIG. 26, in which both the top plate and the IH coil are removed. FIG. 27 is a plan view, a front view, a right side view and a rear view of the upper unit shown in FIG. 26, with the top plate, the IH coil and the cover removed. FIG. 27 is a bottom (bottom) view of the upper unit of the induction heating cooker shown in FIG. 26. FIG. 44 is a vertical cross-sectional view taken along line XX of the upper unit shown in FIG. 43. FIG. 44 is a vertical cross-sectional view taken along line XX of the upper unit shown in FIG. 43. FIG. 44 is a vertical sectional view taken along line ZZ of the upper unit shown in FIG. 43. FIG. 27 is a perspective view 1 showing an exploded state of the induction heating cooker shown in FIG. 26. It is a perspective view 2 which shows the disassembled state of the induction heating cooking appliance shown in FIG. It is a perspective view of the connection member (reinforcement member) of the induction heating cooker shown in FIG. FIG. 27 is a perspective view showing an intermediate stage of disassembling the lower unit of the induction heating cooker shown in FIG. 26. It is a cross-sectional view explaining the principal part of the lower unit of the induction heating cooker shown in FIG. It is the cross-sectional view which showed the principal part of the lower unit of the built-in type induction heating cooking appliance which concerns on Embodiment 3 of this invention. It is a cross-sectional view explaining the principal part of the induction heating cooker shown in FIG. It is a longitudinal cross-sectional view explaining the whole built-in type induction heating cooking appliance which concerns on Embodiment 4 of this invention. It is a longitudinal cross-sectional view explaining the whole built-in type induction heating cooking appliance which concerns on Embodiment 5 of this invention. It is a block diagram explaining the whole built-in type induction heating cooker concerning Embodiment 6 of the present invention.

Embodiment 1.
1 to 25 show the built-in induction heating cooker according to the first embodiment. In the following description, the term "heating cooker" will be used unless there is a contradiction.
In each figure, reference numeral RT indicates the right direction of the heating cooker 1, and LE indicates the left direction. FT indicates the front, and BK indicates the rear.

In the first embodiment, the "induction heating cooker" means one having a heating unit based on the principle of induction heating. When there are a plurality of heating units, there may be a heating source of a method different from the induction heating method, for example, another method such as a radiant electric heat source.

In the first embodiment, the "heating means (heating source)" of the heating chamber may be either a heating source that heats the wall surface of the heating chamber from the outside or a heating source installed in the internal space of the heating chamber. .
Further, any form may be adopted in which a heat generating member which becomes high in temperature by the induction heating method is arranged and the wall surface of the heating chamber is heated from the outside by this heat generating member or the air in the heating chamber is heated.

For example, in Japanese Patent Laid-Open Publication No. 2017-74305, a cooking dish placed in a heating chamber (grill cabinet) on which an object to be cooked is placed is a second heating device for heating the object to be cooked from below. A heating cooker including a heating body (induction heating coil) and a third heating body (induction heating coil) that heats an object to be cooked from the side has been proposed.

Further, in Japanese Patent Application Laid-Open No. 2016-85996, an induction heating coil (IH coil) is provided below the heating chamber and is divided into upper and lower parts by an electric insulator, and an IH coil is provided in the space below the electric insulator. There is proposed a configuration in which a cooking plate placed on the table is induction-heated. The cooking plate is formed of a material that can be heated by induction, and for example, iron, stainless steel, a carbon material having a carbon content of 90% or more, and a ceramic material containing Si (silicon) or FeSi (ferrosilicon) as a conductive material are used. Has been.

Further, as a typical example in which a heat generating member that becomes high in temperature is arranged by an induction heating method, in JP-A-2005-071695, a high frequency current is supplied to an IH coil to generate a high frequency magnetic flux in the IH coil. The high-frequency magnetic flux is linked to the heater arranged in the heating chamber so that the induction current flows through the heater, and the cooked food in the heating chamber can be cooked by the Joule heat generated by the electric resistance of the heater itself. It is disclosed.

Further, in Japanese Patent Laid-Open No. 2013-247048, a heater having an electrically closed circuit is arranged inside a heating chamber, and a high-frequency magnetic flux generated from an IH coil arranged outside the heating chamber is linked to the heater. It has been proposed that the heaters are heated to a high temperature to radiate heat in the heating chamber. The heater here is an electrically closed circuit and is formed by bending a round bar or pipe made of stainless steel or high nickel alloy into a predetermined shape, and joining both ends by welding or brazing. Then, it is formed endlessly.

The "IH coil" referred to in the first embodiment, as a typical example, bundles about 30 thin copper wires or aluminum wires of about 0.1 mm to 0.3 mm, and twists the plurality of bundles. There is a structure in which it is wound in a spiral shape (for example, Japanese Patent Laid-Open No. 2012-79580).

Further, Japanese Patent Laid-Open No. 2018-32551 proposes an induction heating cooker in which a ring-shaped conductor formed by annularly forming a plate-shaped conductive material is used as a heating coil.
Any of these forms corresponds to an IH coil.

In the first embodiment, "coordinated cooking" means two types of heating in which one cooking target (including food, meat, vegetables, etc.) is heated at different locations and heating operation conditions can be independently set. Cooking that uses a source.

The "coordinated cooking" corresponds to the case where a plurality of heating sources are used with a time lag. For example, in the process of completing one cooking, after microwave heating is completed and preheating is performed, the food to be cooked is moved to another place, and the IH coil 17L described later is used to heat the cooked food to complete the cooking. In this case, it is a kind of "cooperative cooking" here.

Cooperative cooking is proposed in the form of a built-in type heating cooker in Japanese Patent No. 5833699 and Japanese Patent No. 5500944.

1 to 25, the heating cooker 1 according to the first embodiment is a heating cooker incorporated in, for example, kitchen furniture (including furniture called a system kitchen) 2 with a sink. 2A is an installation opening formed in the kitchen furniture 2. The heating cooker 1 is supplied with AC power having a voltage of 200 V and a frequency of 50 Hz or 60 Hz from a commercial power supply 99 as described later.

As shown in FIGS. 1 and 13, the heating cooker 1 according to the first embodiment has two induction heating units on the left and right. Circular position marks 17LS and 17RS are provided on the upper surface of the top plate 15 to indicate desired positions on which an object to be heated such as a metal pot is placed. By looking at the circular position marks 17LS and 17RS, the user (user) of the heating cooker 1 can recognize that there are two induction heating units on the left and right sides in the heating cooker 1 of the first embodiment. Note that the user can also recognize that there are two induction heating units on the left and right by the voice guide of the voice synthesizer 95 described later.

The position marks 17LS and 17RS are formed by printing. Directly below the position marks 17LS and 17RS, there are installed induction heating coils (hereinafter referred to as “IH coils”) 17L and 17R, which will be described later. The position marks 17LS and 17RS do not have to be circular, and for example, only the center point of a desired position on which the object to be heated is placed may be indicated by a figure, a symbol such as “+”, or a character.

Since the position marks 17LS and 17RS are circular marks indicating a reference position where induction heating can be performed by the IH coils 17L and 17R, they are drawn with a diameter slightly larger than the maximum outer diameter of the IH coils 17L and 17R. ..

Any one of the IH coils 17L and 17R may be replaced with a radiant electric heat source such as a radiant heater or an infrared heater. Alternatively, in addition to the IH coils 17L and 17R, a radiant electric heat source may be provided to have three or more heating units.

In the first embodiment, the IH coils 17L and 17R are collectively referred to as "induction heating source" hereinafter. In this case, the code is 17. Therefore, when it is called the induction heating source 17, there are cases where both the IH coils 17L and 17R are present, or either one of them.

The heating cooker 1 is placed and supported on the upper surface 2P of the rim portion of the installation opening 2A. In the first embodiment, the kitchen furniture 2 is provided with a water tank 2C capable of temporarily storing the water discharged from the water supply port 2D of the water supply, as shown in FIG. Reference numeral 2B is a front opening formed at a predetermined position of the kitchen furniture 2. This front opening exposes the front constituent parts (the door 114 and the front cover 112 described later) of the heating cooker 1 when incorporated. It is for making it.

If the sizes of the front opening 2B and the installation opening 2A of the kitchen furniture 2 are standard, standardization is being promoted by the industry, and thus the sizes are often pre-formed with standard dimensions. is there. This will be described in detail later.

A general method for incorporating the heating cooker 1 into the kitchen furniture 2 is as shown in FIG. FIG. 3 is a schematic diagram showing an intermediate stage of the assembling work into the kitchen furniture 2.
As shown in FIG. 3, the heating cooker 1 is inserted into the installation port 2A while the front side (front side) of the heating cooker 1 is inclined downward, and then the rear side of the heating cooker 1 is placed. Is lowered as indicated by the solid-line arrow BD, the heating cooker 1 is placed on the peripheral portion of the installation opening 2A of the kitchen furniture 2.

After that, the screws are tightened, and a fixing metal fitting (not shown) installed on the rear peripheral portion of the lower unit 100 described later is moved (rotated) to strongly press the fixing metal fitting against the kitchen furniture 2. Then the installation is completed. Since such an installation method has already been widely adopted, detailed description thereof will be omitted.

As shown in FIG. 3, the main body 10 of the heating cooker 1 is combined and integrated in a state where the upper unit 100 and the lower unit 200 are vertically stacked. In the assembling work of FIG. 3, only the upper unit 100 is fixed to the kitchen furniture 2 with the above-mentioned screw since the product is shipped from the manufacturer. The heating cooker 1 can be taken out from the kitchen furniture 2 by removing the fixing metal fitting (not shown). As a result, thereafter, inspection and repair can be performed outside the kitchen furniture 2.

The installation port 2A formed in the kitchen furniture 2 has a rectangular planar shape as shown in FIG. However, the four corners are arcuate.
The width W1 of the installation port 2A is 560 mm to 564 mm. The dimension D1 in the front-rear direction is 460 mm to 464 mm.

In FIGS. 1 and 2, 3 and 4 are surface materials constituting the surface of the kitchen furniture 2. When the heating cooker 1 is incorporated in the kitchen furniture 2, 5 and 6 are surface materials adjacent to the left and right sides of the heating cooker 1.
When the heating cooker 1 is incorporated in the kitchen furniture 2, the front surfaces of these surface materials 3 to 6 are substantially flush with the front surface of the heating cooker 1. In other words, when the heating cooker 1 is incorporated, the surface materials 3 to 6 and the heating cooker 1 can give the user a design sensation as if they were a flat surface.

In FIG. 3, 8 is a wall that divides the interior of the kitchen furniture 2 into a plurality of rooms vertically, and the lower part of this wall is often used as a storage for kitchen utensils, foods, and the like. The wall 8 is not shown in FIG. Alternatively, the wall 8 may be detachably installed inside the kitchen furniture 2.

With the configuration described above, when the heating cooker 1 is incorporated in the kitchen furniture 2, the entire front surface of the kitchen furniture 2 exhibits a substantially one plane. When the user looks at the kitchen furniture 2, the front surface (front surface) of the kitchen furniture 2 is designed so that it can be recognized as a clean and unified design.

The kitchen furniture 2 and the heating cooker 1 do not have to be designed by the same manufacturer. The kitchen furniture is manufactured and sold by kitchen furniture such as a sink and a housing equipment manufacturer, and the heating cooker 1 is manufactured by a home appliance manufacturer. It is often manufactured and sold.

In FIGS. 1 and 2, reference numeral 7 denotes a frame line printed on the front surface of the surface materials 3 to 5 and does not form physical unevenness on the front surface of the surface materials 3 to 5. It is also possible to attach a thin plate or tape made of glossy metal to show the presence of the frame line 7 to give a high-class feeling.

The four types of surface materials 3 to 6 may be the same. Further, these surface materials 3 to 6 do not have to move back and forth like doors and drawers. For example, it may be one that always exists in a fixed state on the surface of the kitchen furniture 2 and does not move at all.

When the four types of surface materials 3 to 6 have the same front color and surface morphology (presence or absence of pattern, gloss, unevenness, etc.), a unified design feeling as the kitchen furniture 2 is enhanced. For example, when the entire front surface of the surface material 4 is unified with a single color or wood grain, the front surface of the surface material 3 may be unified with the same single color or wood grain design.

Next, FIGS. 4 and 5 will be described. FIG. 4 is a schematic vertical cross-sectional view showing the dimensional relationship between the kitchen furniture 2 and the heating cooker 1 of FIG. 1. FIG. 5 is a schematic vertical sectional view showing a part of the front of the kitchen furniture 2 shown in FIG. 4 in an enlarged manner.

In Japan, kitchen furniture 2 etc. are being standardized (common) for housing parts and components by the “Long-term Use Housing Standardization Promotion Council” (abbreviation: Chojukyo).

According to the “Long-term Use Corresponding Material Standards Manual for IH Cooking Heater (Built-in)” established by the “Nagazumi Kyo”, the following conditions are required for the counter top (kitchen furniture 2) to which the IH cooking heater is attached: It is prescribed.
(1) The width of the installation port 2A is 560 mm to 564 mm. The dimension D1 in the front-rear direction should be 460 mm to 464 mm.
(2) The height dimension C1 of the front falling portion 2F is 40 mm or less.
(3) The depth (front-rear direction) dimension D3 of the front falling portion 2F is 45 mm or less.
(4) The depth D2 (front-back direction) of the ceiling of the front-down portion 2F is 58 mm to 70 mm.

Furthermore, according to the "Standard document for long-term use", the external dimensions of the built-in IH cooking heater (induction heating cooker) are also specified as follows.
(1) The height dimension H2 from the lower end of the top plate to the lower end of the front panel is 215 mm to 223 mm.

The heating cooker 1 of the present invention is designed so as to satisfy the above various conditions.
In FIG. 4, A1 is a dimension of the top plate 15 described below in the front-rear direction and is 510 mm. A2 is the maximum dimension in the front-rear direction from the front surface of the front cover 112 that covers the front surface of the main body 110 to the rear end of the main body 110, which is 498 mm. A3 is a dimension in the front-rear direction from the inclined portion 111 formed on the rear portion of the main body 110 to the front surface of the front cover 112, and is 451 mm.

In FIG. 4, 113 is a heating chamber described later, which is formed inside the lower unit 200. On the front surface of the heating chamber 113, a cooking utensil such as a frying pan and an opening 113</b>A (see FIG. 10) through which a food or the like to be cooked and unloaded can be formed. The opening 113A is covered by a door 114 (see FIG. 10) so as to be openable and closable.

The front surface of the door 114 and the front surface of the front cover 112 are designed to be flush with each other. The door 114 is rotated by a hinge 176 (not shown) and an arm 116 (not shown) on the main body 110 so that the front surface thereof is flush with the front cover 112 front surface except for the handle 115. It is movably supported.

In FIG. 4, H1 is the maximum height dimension of the heating cooker 1. That is, the dimension from the top surface of the top plate 15 to the bottom surface of the lower unit 200 is 227 mm.

In FIG. 4, H2 is a height dimension from the lower end of the top plate 15 to the lower end of the front cover 112 and is 215 mm to 223 mm. H3 is a dimension from the upper end to the lower end of the front cover 112 or the door 114, and is set to 171 mm. H4 is a dimension of the top plate 15 in the height direction and is 11 mm.

Next, the configuration of the heating cooker 1 according to the first embodiment will be described in detail with reference to FIGS. 7 to 17.
FIG. 6 is a plan view of the heating cooker 1. FIG. 7 is a vertical cross-sectional view of the heating cooker 1 taken along line ZZ in FIG. 6. FIG. 8 is a vertical cross-sectional view showing the flow of cooling air when the cooking device 1 is cut along the line ZZ in FIG. 6. FIG. 9 is a vertical cross-sectional view of the heating cooker 1 taken along line WW in FIG. 7. FIG. 10 is a vertical cross-sectional view of the heating cooker 1 taken along line YY in FIG. 6. FIG. 11 is a vertical cross-sectional view of the heating cooker 1 taken along the line VV of FIG. 7. FIG. 12 is a vertical cross-sectional view of the heating cooker 1 taken along line XX in FIG. 7. FIG. 13 is a simplified plan view for explaining the operation unit of the upper unit of the heating cooker 1. FIG. 14 is a simplified cross-sectional view showing the flow of cooling air inside the upper unit 100 of the heating cooker 1. FIG. 15 is a block diagram showing a main control-related portion of the heating cooker 1. FIG. 16: is explanatory drawing which shows the main cooling air paths of the induction heating cooking appliance of FIG. FIG. 17 is a circuit diagram showing details of the inverter circuit of the induction heating cooker of FIG. 1.

(Upper unit 100)
In the first embodiment, the upper unit 100 alone functions as the heating cooker 1. Therefore, the commercial (AC) power source 99 is supplied only to the upper unit 100. However, a power cord 106 (not shown) for directly connecting to the commercial power source 99 via a plug 106A (not shown) is pulled out from the lower unit 200 to the outside of the cooking device 1.

The upper unit 100 includes a box-shaped upper case (upper casing) 16 forming an outer shell, and a metal frame-shaped reinforcing plate (support frame) 22 fixed to the upper part of the upper case (see FIG. 7). And a top plate 15 made of heat-resistant tempered glass or crystallized glass, which is attached to the upper surface of the reinforcing plate 22 so as to cover substantially the entire upper surface of the reinforcing plate 22.

The upper case 16 is formed by pressing a thin metal plate such as a zinc steel plate. Alternatively, it is formed by joining a plurality of thin metal plates by spot welding, screws or the like. In the first embodiment, one metal thin plate is bent to form the bottom wall (bottom surface) 16S, the rear wall 16B, the front vertical wall 16F, and the side vertical walls 16L and 16R, respectively, as will be described later. There is.

The upper case 16 may be formed in another form. For example, only the three portions of the bottom wall (bottom surface) 16S, the rear wall 16B, and the front vertical wall 16F are formed by pressing a single metal plate. Separately from this, two side vertical walls 16L, 16R, one rear wall 16B and one front vertical wall 16F are attached later by screws, spot welding or the like, and finally the whole upper surface is opened in a box shape. Shape it.

The top plate 15 is formed in a flat plate shape having a substantially uniform overall thickness, and the entire lower surface thereof is covered with a coating surface that does not transmit visible light. Therefore, from above the top plate 15, the functional components below it, such as the IH coils 17L and 17R, cannot be seen.

The IH coil 17R has a donut shape in plan view. The maximum heat power of this IH coil 17R is 3200W. The maximum external dimension (diameter) is 168 mm.

Further, the other IH coil 17L also has a donut shape. The maximum thermal power of this IH coil 17L is 3200W. The maximum external dimension (diameter) is 168 mm. In addition, it may be enlarged to about 180 mm so that it can be applied to objects to be heated such as a large pan or frying pan.

Reference numeral 18 denotes an opening (see FIG. 7) formed in the rear portion of the upper case 16 to extend laterally, and reference numeral 19 denotes an exhaust cover installed above the opening. A hole is formed. Reference numeral 20 denotes an exhaust port formed between the exhaust cover 19 and the opening 18.

Reference numeral 22 is a metal reinforcing plate fixed to the upper rear portion of the upper case 16. The reinforcing plate 22 has a length equivalent to the lateral width of the rear edge of the upper case 16. Reference numeral 21 is a decorative frame fixed to the upper surface of the reinforcing plate 22, and is formed longer than the lateral width of the upper case 16. That is, when viewed from above, the exhaust cover 19 seems to surround the rear side and the left and right sides in series (see FIG. 6).

Reference numeral 25 denotes a metal decorative frame, which is installed so as to protect the left and right end faces and the front end face of the top plate 15 from an external impact as shown in FIG.
Reference numeral 26 denotes an annular cushion material formed of a highly elastic material, such as silicon rubber, and is attached to the entire lower surfaces of the decorative frames 21 and 25. As a result, the upper unit 100 is placed on the kitchen furniture 2 via the cushion material 26. In addition, the design may be such that one decorative frame 25 surrounds three parts (sides) of the left and right end faces and the front end face of the top plate 15 or four parts (peripheral four sides) including the rear end face.

In FIG. 6 and FIG. 13, reference numerals 30, 31L, 31R are display portions. Reference numeral 30 denotes a central display portion, which is installed in the front portion of the top plate 15 and below the left and right central portions. 31L is a left side display part and 31R is a right side display part. The left and right display parts 31L and 31R are also installed on the left side of the front part of the top plate 15 and below the right side.

The display units 30, 31L, 31R are mainly composed of a liquid crystal display screen (not shown), and these display units 30, 31L, 31R are horizontally installed in the input operation unit 40 in the left-right direction. It is installed on the operation board 41. It should be noted that the lower surface of the top plate 15 is not provided with a coating surface that blocks visible light as described above, corresponding to the positions directly above the display units 30, 31L, 31R. Therefore, the display contents of the display units 30, 31L, 31R can be visually recognized from above the top plate 15.

The central display section 30 displays common information and alarms of the heating cooker 1. For example, information indicating the selection and operating state of the three types of heating sources of the heating cooker 1 is displayed.

The left side display unit 31L displays information and an alarm regarding the operation of the left side IH coil 17L. Similarly, the right side display unit 31R displays information on the operation and alarm of the right side IH coil 17R.

In FIG. 13, reference numeral 40 is an input operation unit. The input operation part 40 is arranged laterally long along the front edge of the top plate 15 at the rearmost part of the decorative frame 25.
The input operation unit 40 is arranged on the upper surface of an operation board 41 which is horizontally long and is installed in a strip shape.

On the operation board 41, various electronic components, an integrated control device MC that controls overall control of the heating cooker 1, a control device 90, and the like are mounted. The input operation unit 40 will be described later in detail. The operation board 41 is formed of a plastic material having high electrical insulation.

Below the operation board 41, flat auxiliary support plates (shown) are installed so as to vertically overlap with each other so as to face the operation board 41 with a gap. In other words, it has a two-layered structure (two sheets) that are opposed to each other with a space therebetween, so that as many electric components and circuits as possible can be mounted.

F2 is a second air passage through which cooling air from a second cooling fan 61 described later flows, and is formed by a space between a cover 70 described later and a front vertical wall 16F in front of the upper case 16. (See FIGS. 7 and 14).

In FIG. 7, 16B is a rear vertical wall of the upper case 16. A lower case 101 and an upper case 16, which will be described later, are integrated by screws 51 at a plurality of locations.

As is apparent from FIG. 7, the rear vertical wall 16B of the upper case 16 and the lower case 101 closely face each other within a range of about 20 mm to 30 mm, and the facing portion is fixed by the screw 51. ..

In FIG. 7, 104 is a cavity having a large depth and a large plane area. The cavity 104 is a space from the lower surface of the bottom wall (bottom surface) 16S of the upper case 16 to the upper surface of the bottom plate 101U at the rear portion of the lower unit 200 described later. BH indicates the depth (vertical direction) dimension of the cavity 104.

As is clear from the structure shown in FIG. 7, the first embodiment has a flat upper case 16 whose top opening is closed by the top plate 15, and the upper case 16 will be described later. When placed on the lower case 101, the bottom wall 16S of the upper case 16 also serves as the ceiling surface of the lower case 101.

As described with reference to FIG. 7, the space where the bottom wall 16S of the upper case 16 and the bottom plate 101U of the lower case 101 face each other is the largest space is the cavity 104.
In the cavity 104, a waveguide 123 that constitutes a part of a microwave heating device 120 described later is arranged behind the heating chamber 113 in the left-right direction.
Further, behind the waveguide 123, a housing case C154 of the power supply circuit board 127 on which circuit components for supplying electric power to the microwave heating control unit 130 are mounted is arranged long in the left-right direction.

The microwave heating controller 130 is mainly composed of a microcomputer, and is mounted on the power circuit board 127 inside the case C154. In other words, the power supply circuit board 127 stored inside the case C also serves as a control board on which the microwave heating controller 130 is mounted. The control board and the power supply circuit board 127 may be provided separately, but in the first embodiment, they are integrated in consideration of the installation space.

In FIG. 7, 101T is a front horizontal wall made of a metal plate provided on the front side of the lower case 101. The front horizontal wall 101T is formed by bending the upper end of the front plate 101F of the lower case 101 rearward.

Reference numeral 198 is a support metal fitting for connection, which is formed of a metal plate and includes a horizontal portion 198H and a vertical portion 198V. The horizontal portion 198H is fixed to the front horizontal wall 101T of the lower case 101.

The vertical portion of the support fitting 198 and the front vertical wall 16F of the upper case 16 closely face each other within a range of about 20 mm to 39 mm, and the facing portion is fixed by a screw 51F (not shown). There is. The screws 51F are not shown in FIGS. 8, 9, and 10.

Even if one or both of the upper case 16 and the lower case 101 have a box shape formed of a thin metal plate, the upper case 16 and the lower case 101 are firmly connected to each other by fastening the screws 51 and 51F. It becomes one box-shaped structure. In other words, since the outer shape of the box-shaped upper case 16 is slightly smaller than the inner size of the lower case 101, the upper case 16 fits in the lower case 101 in a range (depth) of about 20 mm to 30 mm. It fits. Instead of the screws 51, 51F, other fastening means such as bolts and nuts may be used.

Even if the upper case 16 and the lower case 101 are formed of a thin metal plate so as to be light, they are one strong box-shaped structure that prevents microwave leakage at the door 114, which will be described later. Be beneficial to.

Particularly, since the top plate 15 of the upper unit 100 is supported on the upper surface of the kitchen furniture 2 and receives the entire load of the lower unit 200, the upper case 16 and the lower case 101 should not be distorted or deformed as a whole. Is important. Since the cushion 26 is attached to the entire lower surfaces of the decorative frames 21 and 25, it is the cushion material 26 that actually contacts the upper surface of the kitchen lower portion 2.

In FIG. 7, reference numeral 80 denotes an inverter circuit board, which is installed in the central portion of the upper case 16. The planar shape of the inverter circuit board 80 is a rectangle that is long in the left-right direction.

The inverter circuit 81 mounted on the inverter circuit board 80 includes an inverter circuit 81L that supplies high frequency power to the left IH coil 17L and an inverter circuit that supplies high frequency power to the right IH coil 17R. And a circuit 81R. These will be described later with reference to FIG.

A total of four heat sinks (heat sinks) 82 made of aluminum are attached to the upper surface of the inverter circuit board 80. As shown in FIG. 7, the heat sinks 82 are arranged in two rows so that the two heat radiation fins 82F face each other, and are installed close to each other so as to face each other.

As shown in FIG. 7, the heat sink (heat dissipation sink) 82 has a power control switching element that forms a part of the inverter circuits 81L and 81R on an inclined surface on the opposite side to the opposite side. 83 is attached. Therefore, the heat generated when the electronic component 83 operates can be cooled by the cooling air passing around the heat radiation fins 82F.

The power control switching element 83 is, for example, an IGBT (insulated gate bipolar transistor). One of the power control switching elements 83 on the side of the inverter circuit 81L is on the rear side of the heat sink 82 in two rows, and the other power control switching element 83 on the side of the inverter circuit 81R is on the front side of the heat sinks 82 in two rows. It is attached to the side. In addition, you may make it attach to the opposite side.

In FIG. 7, 70 is a cover formed of a metal thin plate or a plastic material that covers the entire upper portion of the inverter circuit board 80. Both left and right ends of the cover 70 are open. As shown in FIG. 14, the left end surface side of the cover 70 serves as an inlet FI of a cooling air RF1 described later, and the right end surface side of the cover 70 serves as an outlet FO of the cooling air RF1. Constitute.

The cover 70 is located at a position where a constant air gap is secured between the cover 70 and the lowermost surface of the IH coils 17L and 17R, and is sized to secure a constant air gap between the uppermost surface of the heat sink 82 as well.

Since the cover 70 is under the IH coil 17L and is in a state of being close to the IH coil 17L, when the cover 70 is expected to be magnetically shielded, the cover 70 is made of metal such as aluminum, and the upper case is used. It is even better to be electrically connected to 16. For example, a screw (not shown) for attaching the cover 70 directly reaches the screw hole of the cover 70. Since the upper case 16 is connected to a lower case 101 described later by a metal screw or the like, it is electrically connected to a ground terminal (not shown) provided in the lower case 101, and noise is absorbed by the ground. It By doing so, the magnetic shielding effect of the cover 70 can be expected to have a noise shielding effect on various electric components mounted on the inverter circuit board 80.

If the cover 70 is injection-molded with a plastic material, the cross-sectional shape of the cover 70 can be relatively freely determined. Therefore, there is an advantage that the flow (direction) of the cooling air RF1 flowing through the first air passage F1 can be adjusted. For example, a rib-shaped wind direction plate or the like may be integrally formed so that a large amount of cooling air RF1 flows particularly to a specific portion of the heat sink 82.

The IH coils 17L and 17R are supported from below by an electrically insulating heat resistant component called a coil base 17C (not shown) so that the distance between them and the top plate 15 is the same. The description is omitted. Thus, the IH coils 17L and 17R are located on one horizontal line (second horizontal line HL2). In other words, it exists on one plane (second horizontal plane HL2) defined by the second horizontal line (see FIG. 9).

The cover 70 is in a position where it does not contact both the heat sink 82 and the coil base disposed below the IH coils 17L and 17R.

The cover 70 is fixed so as to be in close contact with the upper surface of a flat plate-like support plate 71 which is larger than the planar shape of the cover 70. A first air passage F1 that is long in the left-right direction is defined between the inverter circuit board 80 and the cover 70 as shown in FIGS. 7 and 14. The support plate 71 is made of an insulating material.

7 and 10, reference numeral 102 denotes a metal exhaust duct that guides the exhaust flow from the lower unit 200. A discharge port side end portion 102E of the exhaust duct 102 penetrates through a gap GP1 formed between a partition plate 52 described later and a rear vertical wall 16B of the upper case 16.

In FIG. 9, 16A is a horizontal flange formed by bending the lateral vertical walls 16L and 16R of the upper case 16 in series from the upper ends thereof at a right angle to the outside.
101A is a horizontal flange that is formed by sequentially bending the lateral vertical walls 101L and 101R of the lower case 101, which will be described later, from the upper ends thereof at right angles to the outside.

In the upper case 16 and the lower case 101, the above-mentioned flange 16A overlaps the flange 101A. In this superposed state, the side wall surface of the upper case 16 and the side wall surface of the lower case 101 are fixed by screws (not shown). Therefore, the upper case 16 and the lower case 101 are a strong integral structure by fixing with the screw 51 and closely fixing the flange 16A and the flange 101A. In other words, the total weight of the upper case 16 is received by the upper surface of the flange 101A of the lower case 101, so that even if the upper case 16 and the lower case 101 are formed of a thin metal plate, they are in an integrated state. Then, it is possible to form a box-shaped structure having mechanical strength.

The coupling between the flange 16A and the flange 101A may be performed by using other fastening means such as bolts and nuts instead of screws. The flange 16A and the flange 101A do not contact the upper surface of the kitchen furniture 2. Since the flange 16A and the flange 101A are made of a hard material (metal), there is a concern that the kitchen furniture 2 may be damaged. Further, if the flange 16A and the flange 101A hit the kitchen furniture 2, the cushion material 26 cannot be installed while being compressed. If the cushion material 26 is not in close contact, there is a concern that the effect of preventing intrusion of water or the like may be impaired.

As shown in FIG. 14, a first cooling fan 60 and a second cooling fan 61 are installed near the lateral vertical wall 16L on the left side of the upper case 16, respectively. The rotating shafts (not shown) at the center of the rotating blades (not shown) of the first cooling fan 60 and the second cooling fan 61 extend in the vertical (vertical) direction. Rotate on two horizontal planes (first horizontal plane HP1).

Centrifugal fans (blowers) are adopted as the first cooling fan 60 and the second cooling fan 61. The reason for this is that the static pressure is high and the ventilation resistance is large in the space of high packaging density. In addition, generally, there is a type of centrifugal fan in which the suction port is one and the direction of discharge (discharging) is the entire radial direction. However, the first embodiment is a type having only one blowing direction.

Reference numeral 60A denotes an air outlet integrally formed with the fan case 60C of the first cooling fan 60, and 61A denotes an air outlet integrally formed with the fan case 61C of the second cooling fan 61. The outlet 60A is directed to the inverter circuit board 80. Further, the air outlet 61A is directed toward the holder 42 below the operation board 41. That is, the two outlets 60A and 61A are both on the common horizontal plane (HP1) and are directed to the right. This horizontal plane HP1 is a first horizontal plane described later.

The holder 42 is made of an insulating material such as a plastic material. The holder 42 has a size corresponding to the entire area of the input operation section 40 and the ranges of the central display section 30, the right side display section 31R, and the left side display section 31L, and is provided in a long band shape in the left-right direction.

The first cooling fan 60 and the second cooling fan 61 have exactly the same structure, the same shape, and the same “rated specification”, and are operated at the same rotation speed during normal induction heating operation. The air flow rate may be changed. For example, when the heating power is increased by increasing the drive power applied to the IH coils 17L and 17R, or when it is detected that the temperature of the central display unit 30 or the input operation unit 40 is higher than normal. In order to increase the cooling effect, the number of rotations may be increased to increase the amount of air blown.

The rated specifications are, for example, rated voltage, operating voltage range, rated current, rated rotation speed, maximum air volume, maximum static pressure, sound pressure level, and the like. The rotation speed can be changed by changing the applied voltage or the voltage application time (ON DUTY time) within the operating voltage range.
On the other hand, in the first embodiment, the PWM control (Pulse Width Modulation) method is adopted, and the duty cycle of the pulse width (pulse width The ratio of H and L) is changed to control the motor of the first cooling fan 60. This PWM control is also adopted in the second cooling fan 61.

Each of the first cooling fan 60 and the second cooling fan 61 has a configuration in which a rotating blade (not shown) is surrounded by fan cases 60C and 61C, and a circular suction port (see FIG. (Not shown).

At the positions of the first cooling fan 60 and the second cooling fan 61 directly below the respective suction ports (not shown), there are ventilation holes 64 (FIG. 9)). The ventilation hole 64 is formed on the bottom wall surface of the lower case 16. The ventilation hole 64 communicates with a ventilation hole 164 formed on the left side wall surface of the lower case 101 described later. Therefore, the first cooling fan 60 and the second cooling fan 61 can introduce external air through the ventilation holes 164.

In FIG. 9, reference numeral 165 denotes a recess (intake duct), which is provided to directly communicate the ventilation hole 64 with the ventilation hole 164 of the lower case 101. The recess 165 is formed by recessing from the left side by a certain depth (dimension) DP1. The dimension DP1 is 99 mm.

As shown in FIG. 9, the vertical center point of the outlet 60A of the first cooling fan 60, the vertical center point of the heat sink 82, and the electrical components mounted on the upper surface of the power supply circuit board 55 described later. The vertical center point of 85 is located on one horizontal line HL1. In other words, the cooling air RF1 blown out from the air outlet 60A of the first cooling fan 60 has such a positional relationship that it reaches the heat sink 82 and the electric component 85 when it advances straight to the right. The horizontal plane defined by this horizontal line HL1 is hereinafter referred to as "first horizontal plane" HP1.

AC power from a commercial AC power supply 99 is supplied to the power supply circuit board 55 via a filter circuit board 54 described later. Then, in the power supply circuit board 55, AC is converted to DC. Therefore, an electric component 85 such as a diode for converting AC to DC and a transformer 57 (not shown) is mounted.

When the temperature of the heat sink 82 of the inverter circuit board 80 rises abnormally, the control device 90 that controls the induction cooking reduces the heating amount of the IH coils 17L and 17R. In addition to this operation, the air flow rate of the first cooling fan 60 per unit time may be temporarily increased. The temperature of the heat sink 82 is detected by contact type temperature sensors TS8 and TS9 such as a thermistor.

If the first cooling fan 60 and the second cooling fan 61 have the same structure, the same shape, and the same rated specifications, the procurement cost at the time of manufacturing can be reduced. When the cooling fans having the same specifications are arranged in parallel and operated, a beat noise is likely to occur. Therefore, as a countermeasure against the beat noise, the rotation speeds of the first cooling fan 60 and the second cooling fan 61 are set to different values. The control is as follows.

In FIG. 14, reference numeral 52 denotes a metal partition plate which is formed in the rear portion of the upper case 16 so as to be elongated left and right, and is fixed to the upper case 16. The partition plate 52 is a wall extending vertically so as to partition the inner space of the upper case 16 into front and rear. It should be noted that the term “partitioning” here does not mean a strict shield that completely blocks the flow of air. It suffices that the flow of cooling air from the first cooling fan 60 and the second cooling fan 61 beyond the upper end surface of the partition plate 52 can be suppressed to some extent.

In FIG. 14, 52A is an exhaust window formed in the left half of the partition plate 52, 53 is an exhaust port plate installed so as to cover the front side of the exhaust window 52A, and a large number of through holes 53A are formed. The cooling air flowing toward the exhaust window 52A of the partition plate 52 passes through. The cooling air that has passed through the exhaust window 52A is discharged to the external space of the heating cooker 1 through the exhaust cover 19.

In FIG. 14, LF is an exhaust port dimension indicating the range (lateral width dimension) of the exhaust gas exhausted from the installation space CK of the IH coils 17L and 17R. The size of the exhaust port is determined by the formation range of the through hole 53A and the lateral size of the exhaust window 52. If the lateral width dimension of the exhaust window 52 is narrower than the range in which the through hole 53A is formed (the form shown in FIG. 14), the lateral dimension of the exhaust window 52 determines the exhaust range LF.

In FIG. 14, reference numeral 54 is a filter circuit board arranged at the rear right corner of the upper case 16. With this filter circuit board, noise in the power source from the commercial power source 99 is removed and supplied to the output terminal side, and conversely, noise is prevented from flowing out (backflowing) to the commercial power source side at the input terminal side. And electrical components (not shown) such as resistors and inductors (choke coils), line-to-line capacitors, relays, and current fuses are mounted. A terminal end of a power cable (not shown) connected to the commercial power source 99 via a plug is connected to the filter circuit board 54 via the inside of a lower unit 200 described later.

The power circuit board 55 is on the opposite side of the first cooling fan 60 with the inverter circuit board 80 interposed therebetween. In other words, since the power supply circuit board 55 is on the right side of the outlet FO of the first air passage F1 formed between the inverter circuit board 80 and the cover 70, cooling immediately after exiting from the first air passage F1. Cooled by the wind.

In FIG. 14, CL3 is a center line passing through the center point of the left IH coil 17L in the front-rear direction, and CL4 is a center line passing through the center point of the right IH coil 17R in the front-rear direction.
CL5 is a center line that crosses the center points of the two IH coils 17L and 17R in the left-right direction. CL2 is a center line that penetrates the center of rotation of each rotary blade (not shown) in the first cooling fan 60 and the second cooling fan 61 in the front-rear direction. As is clear from FIG. 14, the first cooling fan 60 and the second cooling fan 61 are aligned in the front-rear direction.

In FIG. 14, RF1 indicates the cooling air blown from the first cooling fan 60. RF2 represents the cooling air blown from the second cooling fan 61.

RF3 represents the cooling air after it has exited from the outlet FO of the first air passage F1. RF4 indicates cooling air after passing through the second air passage F2. It should be noted that the cooling air RF3 that has exited from the outlet FO and the cooling air RF4 that has passed through the second air passage F2 partly merge together. That is, before reaching the through hole 53A of the exhaust port plate 53, part of the cooling air RF1 and the cooling air RF2 merge.

In FIG. 14, GP1 is a gap formed between the partition plate 52 and the rear vertical wall 16B of the upper case 16. The width of the gap GP1 in the front-rear direction is about 30 mm to 50 mm.

Next, returning to FIG. 13, the input operation unit 40 will be described.
In FIG. 13, reference numeral 40 denotes an input operation unit formed on the front side upper surface of the top plate 15, and as described below, input is performed by using a change in capacitance when the user lightly touches with a finger or the like. The various types of input keys that can be used are arranged in a straight line in the horizontal direction.

The input operation part 40 includes three parts, a right operation part 40R, a central operation part 40M, and a left operation part 40L. Reference numeral 98 denotes an operation button or an operation key (touch input type) of the main power switch 97 that can supply and cut off the commercial power 99 to the integrated control device MC described later.

The main power switch 97 is attached to the filter substrate 54 of the upper unit 100 as shown in FIGS. The commercial power supply 99 is supplied to the power supply circuit board 55, the inverter circuit 81, and the power supply circuit section (not shown in FIG. 15) of the lower unit 200.

Two touch-type input keys 43R are arranged on the right operation unit 40R. These input keys 43R are assigned one or more input functions. For example, the thermal power (power consumption) at the time of induction heating, the induction heating time, the induction heating pattern, and the like. The right operation unit 40R is for instructing the start and stop of the operation of the right IH coil 17R and other energization conditions (time, thermal power, etc.).

44R is a touch-type input key for selecting a "control menu" for heating and cooking, and one can be selected from a plurality of control menus each time a touch operation is performed. The “control menu” is a control mode such as boiling water, simmering, fried food (automatic cooking), etc., as shown in FIG.

45R is a touch-type input key that can instruct the start and stop of the operation of the right IH coil 17R. In addition, when the thermal power (power consumption) of the IH coil 17R, the induction heating time, and the control mode (see FIG. 19) are selected, any one of the input keys 43R or 44R confirms the heating condition. , Input keys that can command the start of induction heating operation are automatically switched. However, the input key 45R may always be used to start and stop the heating operation without switching the function of the input key.

Two touch-type input keys 43L are arranged on the left operation unit 40L. These input keys 43L are assigned one or more input functions. For example, the thermal power (power consumption) during induction heating, the induction heating time, the induction heating control mode, and the like. The left operation portion 43L is for instructing the operation start and stop of the left IH coil 17L and other energization conditions (time, thermal power, etc.).

44L is a touch-type input key for selecting a control menu for heating and cooking, and one can be selected from a plurality of "control menus" each time a touch operation is performed. The “control menu” is, for example, as shown in FIG. 19, a control mode of boiling water, boiling, fried food (automatic cooking), or the like.

Reference numeral 45L is a touch-type input key that can instruct the start and stop of the operation of the left IH coil 17L. When the thermal power (power consumption) of the IH coil 17L, the induction heating time, the control mode, or the like is selected, any one of the input keys 43L or 44L determines the heating condition and the induction heating operation. It automatically switches to the input key that can command the start of. However, the input key 45L may always be used to start and stop the heating operation without switching the function of the input key.

Two touch-type input keys 43M are arranged on the central operation section 40M. These input keys 43M are assigned one or more input functions. For example, the thermal power (power consumption) at the time of microwave heating, the heating time, the heating pattern, and the like. The central operation unit 40M is for instructing start and stop of both microwave heating and electric radiation heating in the lower unit 200 and other energization conditions (time, thermal power, etc.).

44M is a touch-type input key for selecting a "control menu" for microwave heating and oven heating using the heating chamber 113. The input key 44M can be selected from a plurality of control menus each time the touch operation is performed. The “control menu” here is, for example, a control mode such as warming, simmering, grilling (automatic cooking), grilling (manual cooking), and thawing. For example, if grilled food (manual cooking) is selected, the hamburger or the like can be heated for any time (either microwave or electric radiation heat, or both at the same time).

When the output of microwaves, the thermal power (electric power consumption) of electric radiation heating, the heating time, the heating pattern, etc. are selected, any one of the input keys 43M or 44M determines the heating condition, It automatically switches to the input key that can command the start of operation.

Reference numeral 45M is a touch-type input key that can instruct start and stop of the microwave heating and oven heating operations using the heating chamber 113. Note that the user first presses the operation button (input key) 98 of the main power switch 97 to turn on the main power before heating by the induction heating source 17 and then presses the input key 45M. In this case, the integrated control device MC, which will be described later, determines that either one or both of microwave heating and oven heating is performed, and displays necessary information on the central display unit 30.

If the input key 45M is pressed immediately after starting at least one of the microwave heating and the electric radiation heating, the heating operation is immediately stopped.

When the input function is switched, each of the input keys 43L, 43M, 43R, 44L, 44M, 44R has a function of displaying the input function after switching by characters or symbols within the range of the key. Therefore, the user's operation error is prevented.

In FIG. 13, reference numeral 47 is a touch-type input key for instructing Internet connection for wireless communication with the integrated control device MC. 46L and 46R are windows for transmitting an infrared signal serving as a command signal for starting operation to a ventilation device (not shown) installed outside. An infrared transmitter 48 is installed below this window.

Reference numeral 49 denotes a wireless communication unit (communication module), which includes an antenna (not shown) for receiving an electric wave from the outside and transmitting the electric wave to the outside and a transmission/reception circuit (not shown). The wireless communication section 49 is installed below the right end portion of the display substrate 41, with a slight distance from the bottom surface of the upper case 16.

In FIG. 13, CL1 indicates a center line passing through the left and right center points of the upper unit 100 in the front-rear direction, and AL indicates a range in which the top plate 15 is exposed on the upper surface of the upper unit 100.

Next, the control means of the upper unit 100 will be described with reference to FIG.
In this figure, description of a part of the configuration is omitted, and the filter circuit of the filter circuit board 54 is not described.

Reference numeral 97 denotes a main power switch which is opened and closed by a user and is connected to a 200 V commercial power source 99 via a power cord and a power plug (not shown). Reference numeral 91 is a power supply circuit to which electric energy is supplied through the main power supply switch 97, and reference numeral 92 is a DC power supply conversion unit for converting AC power from a commercial power supply into DC. The power supply circuit 91 is mounted on the power supply circuit board 55.

The MC is an integrated control device and has a function of a main controller or a host computer. It is a control device mainly composed of a microcomputer. The integrated control device MC is supplied with a predetermined constant current from the power supply circuit 91. The integrated control device MC is mounted on the back (lower) surface of the operation board 41 (see FIG. 14).

The integrated control device MC is composed of four parts: an input part, an output part, a storage part, and a CPU (arithmetic control part), and the storage part stores in advance an energization control program for three heating sources. (Stored) In addition to a storage unit (ROM, RAM) of the microcomputer, a large-capacity storage device (main memory) MM for recording abnormality monitoring information is incorporated.

Reference numeral 90 denotes a control device that controls the induction heating, and is mainly composed of a microcomputer. In the control device 90, an energization control program corresponding to various cooking menus at the time of induction heating is stored (stored) in advance. In addition, it has a built-in storage device (not shown) for recording the abnormality monitoring information.

Note that a part of the function of the control device 90 may be assigned to the second control device 90A (not shown). For example, a microcomputer may be mounted on the inverter circuit board 80, and the microcomputer may be responsible for controlling the input and output of the inverter circuits 81L and 81R.

During all cooking operations such as induction cooking and microwave cooking, the integrated control device MC centrally monitors the presence or absence of an electrical abnormality.

Reference numeral 96 is a clock circuit also called a real time clock, which is supplied with power from a dedicated power source (built-in battery) BT1 different from the power source circuit 91 connected to the main power source switch 97, and is driven for a long period of time. It has become so. This may be, for example, a radio-controlled timepiece, which always informs the current date and accurate time in seconds if requested by the integrated control device MC, and is set at the correct date and time at the manufacturing stage of the heating cooker 1. There is. Therefore, even if the main power supply of the cooking device 1 is turned off and then the main power supply is turned on again, the time information of this clock circuit is not affected and there is a function of always transmitting the latest correct time to the integrated control device MC. Therefore, the abnormality monitoring information recorded in the storage device MM of the integrated control device MC is always recorded and saved at the correct time at the same time.

In FIG. 15, reference numeral 72 denotes a power control unit (also referred to as “demand control unit”). The electric power control unit 72 analyzes the command signal for performing the induction heating or the microwave heating by the integrated control device MC, and the total electric power consumption of the heating cooker 1 has a specified value or an upper limit value individually set by the user. There is a function to monitor so that the total power consumption does not exceed a specified value or an arbitrary set value, and there is a function to automatically limit the heating power during induction heating or microwave heating.

Generally, "demand control device" or "demand control device" means a device that controls the value of demand (demand power), and automatically checks the power usage status, and when it seems that the set value is exceeded, If you set an automatic stop of the device that can be stopped by issuing an alarm, etc., the device itself automatically stops the electric device that can be stopped as specified, and if a certain time elapses It is known as a device that automatically restores equipment, and is said to exert great power in managing power contracts with electric power companies in each home.

The power control unit 72 of the first embodiment is provided in order to allow the cooking device 1 itself to have the above-described power consumption suppressing function. The power control unit 72 may be provided as a control function in the integrated control device MC without providing any special hardware, and a demand control program may be incorporated into the integrated control device MC from the beginning, or It can also be realized by adding later.

The power control unit 72 of the first embodiment can set only one of the maximum power consumption of the heating cooker 1 out of three levels (5800W, 4800W, 4000W). It should be noted that this setting can be set by the input operation section 40 while observing the above-mentioned three-step numerical values displayed on the central display section 30 when a plurality of specific keys in the input operation section 40 are simultaneously pressed. .. Such a simple setting method is introduced, for example, in Japanese Patent No. 6012780.

Reference numeral 73 is a signal transmission unit provided for transmitting various control signals between the upper unit 100 and the lower unit 200. For example, a signal line and a connector that can transmit a signal by wire are applicable. Further, for example, an infrared communication unit may be used so that signals can be transmitted and received wirelessly. The signal transmission unit 73 is also provided between the integrated control device MC and the control device 90.

Reference numeral 84 is a vibration-sensing device that detects shaking when an earthquake occurs. When a vibration intensity (acceleration) or higher is detected, a vibration detection signal is sent to the integrated control device MC, and the integrated control device MC receives the signal. It is judged that an earthquake has occurred, and the power of all heating means in use is cut off instantly.

The control device 90 obtains temperature information from the temperature detection circuit 93 and monitors whether or not the main part of the upper unit 100 has an abnormally high temperature. For example, the central display unit 30 is composed of a liquid crystal display substrate, but since it is relatively weak against heat, it is monitored through a temperature detection circuit 93 so as not to exceed a predetermined temperature (for example, 60° C.).

When the measured temperature exceeds the predetermined temperature, the control device 90 determines that the "abnormal preliminary state" (the abnormal preliminary state is limited to the case where the detected temperature is in the range of 60°C to 65°C). When the temperature exceeds 65°C, the risk increases, and the control device 90 recognizes it as a true abnormal state).

In this abnormal preliminary state, the induction heating operation does not immediately stop, and the improvement is achieved by increasing the blowing capacity of the motor 61M of the second cooling fan 61 that cools the IH coil installation space CK of the upper unit 100. However, when the temperature exceeds 65° C., the control device 90 determines that there is an abnormal state and immediately stops the induction heating operation. Specifically, for example, when the IH coil being driven is the right IH coil 17R, the power supply of the inverter circuit 81R that supplies high frequency power to the IH coil 17R is cut off. Then, the operation of the induction heating circuit 94R including the IH coil 17R, the resonance capacitor and the like is stopped. Incidentally, 94L is an induction heating circuit for the left IH coil 17L.

Then, at least the electrical and physical (temperature of the central display unit 30 described above as an example) change of the main part during induction heating in the period from the abnormal preliminary state to the emergency stop is shown (abnormality monitoring). The information is stored in the storage device 90R of the control device 90.

In the abnormal preliminary state described above, the induction heating operation is not immediately stopped, and the air blowing ability of the motor 61M of the second cooling fan 61 is not increased (the rotation speed of the rotary blade is not changed), and the IH coil 17L, The 17R firepower may be improved by forcibly lowering it.

The abnormality monitoring information stored in the storage device of the control device 90 is acquired during the period from the time when the activation command is received from the integrated control device MC until the cooking is normally completed. Therefore, the "control menu" (for example, "boiling water", "boiled food", "fried food", etc.) and the information on the thermal power of induction heating are also recorded in time series. When an emergency stop occurs due to an abnormal state on the way, the abnormal monitoring information is stored in the storage device 90R until that point.

Furthermore, in this Embodiment 1, since the operation of the heating cooker 1 is monitored over a wider range to acquire data, all the heating on the upper unit 100 and lower unit 200 sides is turned on after the main power switch 97 is turned on. The integrated control device MC acquires the monitoring information regarding the cooking state. The integrated control device MC obtains the monitoring information on the presence/absence of an abnormality from the heating chamber control unit 159 and the microwave heating control unit 130 via the signal transmission unit 73.

In the inverter circuit board 80, an inverter circuit 81R dedicated to the right IH coil 17R and an inverter circuit 81L dedicated to the left IH coil 17L are mounted one by one.

The two inverter circuits 81L and 81R are driven by the control device 90 independently of each other. In addition, when these inverter circuits are collectively referred to, the reference numeral "81" is used.

Details of the two inverter circuits 81L and 81R will be described later with reference to FIG.

In FIG. 15, reference numeral 95 denotes a voice synthesizing device for synthesizing a voice that is electronically generated, and notifies the user of an operation, a notification when an abnormality occurs, and the like by a voice from the speaker 95S each time.

The temperature detection circuit 93 described above is connected to at least seven temperature sensors TS3 to TS9. Specifically, there are temperature sensors TS3 to TS9 for detecting the temperature of the top plate 15, the ambient temperature of the IH coil installation space CK, the temperature of the heat sink 82 of the inverter circuit board 80, the temperature of the central display unit 30, and the like. .. The temperature detection circuit 93 receives temperature detection information from each of the temperature sensors TS3 to TS9 and sends the temperature detection results to the control device 90.

The temperature sensors TS3 to TS9 may be either a non-contact type such as an infrared sensor or a contact type such as a thermistor, and these are used alone or in combination.

Of the temperature sensors TS3 to TS9, the two temperature sensors TS3 and TS5 are non-contact type sensors such as infrared sensors, and as shown in FIG. 13, the respective void portions of the IH coils 17L and 17R. And receives an infrared signal from the direction of the top plate 15. In other words, this allows the temperature of the bottom of the pan or the tie pan, which is the object to be heated, to be measured.

Of the temperature sensors TS3 to TS9, the two temperature sensors TS4 and TS6 use thermistors as contact type sensors, and as shown in FIG. 13, the center portions of the IH coils 17L and 17R are respectively provided. It is located in the cavity. These temperature sensors TS4 and TS6 are in direct contact with the lower surface of the top plate 15, or are in contact with the lower surface of the top plate 15 via a heat conductive inclusion. Thereby, the temperature of the top plate 15 can be measured.

Of the temperature sensors TS3 to TS9, one temperature sensor TS7 (see FIG. 13) uses a thermistor as a contact sensor and is installed on the upper surface of the holder 42. Then, the ambient temperature of the central display unit 30 and the input operation unit 40 is detected. Further, the two temperature sensors TS8 and TS9 use a thermistor and are attached to the upper surface of a heat sink 82 described later.

The lower unit 200 side is also provided with at least two temperature sensors TS1 and TS2 in order to detect the internal space temperature of the lower unit 200, but details will be described later.

Reference numeral 62 denotes a cooling fan drive circuit, which controls the drive power of the drive motors 60M and 61M for the first cooling fan 60 and the second cooling fan 61. That is, by the control by the cooling fan drive circuit 62, the blowing capacities of the first cooling fan 60 and the second cooling fan 61 are changed independently of each other in multiple stages.

Reference numeral 63 denotes a display section drive circuit, which has a function of controlling operations of the central display section 30, the left side display section 31L, and the right side display section 31R and displaying necessary information.
The display drive circuit 63 may be configured by a dedicated microcomputer. Further, the control program (software) that exhibits the function of the display unit drive circuit 63 may be incorporated in the integrated control device MC. The display drive circuit 63 is mounted on the upper surface of the operation board 41 (see FIG. 14).

Reference numeral 84 is a vibration-sensing device that detects shaking when an earthquake occurs. When a vibration intensity (acceleration) or higher is detected, a vibration detection signal is sent to the integrated control device MC, and the integrated control device MC receives the signal. It is judged that an earthquake has occurred, and the power of all heating means in use is cut off instantly.

Reference numeral 49 denotes a wireless communication unit 49, which receives information from the integrated control device MC and transmits information. Further, it receives information from the outside in response to a command from the integrated control device MC.

(Lower unit 200)
Next, the lower unit 200 will be described.
FIG. 7 is a vertical cross-sectional view of the induction heating cooker of FIG. 1 taken along the line ZZ of FIG. FIG. 8 is a vertical cross-sectional view showing the flow of cooling air when the induction heating cooker of FIG. 1 is cut along the line ZZ of FIG. FIG. 9 is a vertical cross-sectional view of the induction heating cooker of FIG. 1 taken along the line WW of FIG. 7.

7 to 9, reference numeral 101 denotes a lower case (lower housing) that constitutes the outer shell of the main body 110 of the lower unit 200. The lower case 101 is formed by pressing one thin metal plate such as a zinc steel plate or by joining a plurality of thin metal plates by spot welding, screws, or the like. In the first embodiment, as described below, it is composed of three metal thin plates.

Reference numeral 101H denotes a body portion that forms three surfaces of the rear case and the left and right portions of the lower case 101, and 101U is a flat plate-like bottom plate that completely closes the bottom opening of the body portion. Reference numeral 101C denotes an inclined portion, which is a wall surface that is inclined forward as it goes downward so as not to hit the installation opening 2A of the kitchen furniture 2 when the heating cooker 1 is installed on the kitchen furniture 2. 101F is a front plate that constitutes the front surface of the lower case 101, and is a single flat plate as a whole. The front surface of the front plate 101F is closely attached to the rear surface of the door 114 so that microwaves do not leak from the gap between the front plate 101F and the door 114.

The lower unit 200 includes two independent heat sources. One of them is the microwave heating device 120, and the other is the oven heating device 140. The oven heating device 140 heats the heating chamber (oven chamber) 113 from the outside thereof, but may heat the heating chamber 113 from the inside thereof.

7, 9 and 10 show the main part of the microwave heating device 120.
From the front side, they are installed in the following order.
An inverter circuit board 121 (see FIG. 9) on which an inverter circuit 121A (see FIG. 15) is mounted is arranged on the most front side.

Behind the inverter circuit board 121, a magnetron 122 serving as a microwave generation source and a waveguide 123 surrounding the oscillation part 122A of the magnetron 122 are arranged.

Further, behind the waveguide 123, an antenna case 124 connected to the waveguide 123 and an antenna 125 in the antenna case are arranged.
A motor 126 for rotating or rotating the antenna 125 during microwave heating is arranged behind the antenna case 124.

Reference numeral 127 denotes a power supply circuit board for supplying microwave heating output and electric power to the magnetron 122, a power supply circuit section 120P (not shown) for receiving commercial power from the filter circuit 54, and a microwave heating section described later. And 130 are mounted.

In FIGS. 7 and 8, 128 is a third cooling fan, which is arranged directly below the box-shaped case A150 accommodating the inverter circuit board 121. The case A150 has a shape in which the entire lower surface is open and there is no bottom surface.
Numeral 129 is a fourth cooling fan, which is arranged directly below the box-shaped case B151 on which the heat radiation part 122H of the magnetron 122 is placed. In the heat radiation part 122H, several heat radiation fins for passing cooling air from the fourth cooling fan 129 are formed in parallel. The case B151 has a shape in which the entire lower surface is open and there is no bottom surface.

The third cooling fan 128 and the fourth cooling fan 129 are, for example, axial flow fans. It is supported by the bottom plate 101U of the lower case 101 so that the rotation axis at the center of the rotary blade is in the vertical (vertical) direction.

If the third cooling fan 128 and the fourth cooling fan 129 have the same structure, the same shape, and the same rating specifications, the procurement cost at the time of manufacturing can be reduced. Since it is highly possible that beats occur when cooling fans having the same specifications are arranged in parallel and operated, as a countermeasure against the beats, it is necessary to control the rotation speeds of the third cooling fan 128 and the fourth cooling fan 129 to different values. May be done.

As described above, the case A150 and the case B151 are open on the entire bottom surface, and the third cooling fan 128 and the fourth cooling fan 129 are arranged so as to lie inside the openings.

In FIG. 7, the wind direction plates 199 provided in two rows inside the case A150 are integrally or separately formed inside the case A150. The wind direction plate 199 is installed in order to efficiently flow the cooling air from the third cooling fan 128 to the inverter circuit board 121 and two communication ports 138A and 138B described later.

152F is a front air intake port, and is formed in the bottom plate 101U of the lower case 101. The intake port is composed of a large number of small circular through holes, or rectangular or elliptical through holes. The intake port 152F is for the third cooling fan 128.

152B is an intake port on the rear side and is formed in the bottom plate 101U of the lower case 101. The intake port is composed of a large number of small circular through holes, or rectangular or elliptical through holes. The intake port 152B is for the fourth cooling fan 129.

Reference numeral 153 denotes a duct installed above the heat radiating portion 122H, which guides the cooling air RF6 from the fourth cooling fan 129 passing through the heat radiating portion 122H to the downstream side as shown in FIG.

Reference numeral 154 denotes a case C, which houses the power supply circuit board 127 and the microwave heating control unit 130 in a sealed state. The case 154 is formed of a plastic material having high electrical insulation.
The case C154 is configured by stacking two members, a lid 154A on the rear side and a container-shaped or box-shaped main body 154B on the front side. The lid 154A closes a large opening formed on the front surface side of the main body 154B.

In the case C154, a power supply circuit board 127 and a board (not shown) to which the microwave heating controller 130 is attached are attached to the main body 154 on the front side. At the time of maintenance and inspection, the lid 154A is opened to allow various inspections and repairs of the power supply circuit board 127 and the microwave heating controller 130 inside.

The case C154 is installed as far as possible from the back surface of the heating chamber 113 so as not to be affected by heat from the heating chamber 113. Further, it is installed away from the bottom plate 101U, so that even if liquid such as water or cooking liquid enters the inside of the lower case 101 from the upper unit 100 side, the electric insulation is not damaged. ing.

As described with reference to FIG. 7, the space where the bottom wall 16S of the upper case 16 and the bottom plate 101U of the lower case 101 face each other is the largest space is the cavity 104.
In the cavity 104, a waveguide 123 forming a part of a microwave heating device 120 described later is arranged long in the left-right direction behind the heating chamber 113, and behind the waveguide 123, The housing case C154 of the power supply circuit board 127 on which circuit components for supplying electric power to the microwave heating control unit 130 are mounted is arranged long in the left-right direction.

As described with reference to FIG. 7, the front horizontal wall 101T made of a metal plate provided on the front side of the lower case 101 is formed by bending the upper end of the front plate 101F of the lower case 101 rearward. The support fitting 198 on the lower case 101 side is fixed to the upper case 16.

7 and 8, reference numeral 131 denotes a door opening/closing detection mechanism provided as a countermeasure against electric wave leakage during microwave heating.
In order to ensure the safety of the microwave heating device, it is legally required to mount the door open/close detection mechanism 131. A typical door open/close detection mechanism 131 of this type is known from patent documents such as Japanese Patent No. 4372099 and Japanese Patent Laid-Open No. 11-214147.

According to the patent document, a latch switch, a door switch, and a monitor switch are incorporated as the door opening/closing detection mechanism 131, and these switches are interlocked with the opening/closing of the door to detect opening/closing with a time difference. Is proposed.

Further, in Japanese Patent Laid-Open No. 11-214147, the power supply of the inverter circuit is opened and closed by the first interlock switch and the second interlock switch, and when the first interlock switch has a short circuit failure, it is inserted into the power supply circuit. It has been proposed to provide a monitor switch to turn off the existing fuse.

7 and 8 show the main part of the door opening/closing detection mechanism 131 employed in the first embodiment. In these figures, 132A is a latch switch and 132B is a door switch. Although not shown, when either or both of the latch switch 132A and the door switch 132B are not opened due to an abnormality, a monitor switch 133 (not shown) that shuts off the power of the inverter circuit 121A of the inverter circuit board 121. ) Is also provided.

The latch switch 132A is pushed by a pin 134 which is fixed to the door 114 side and protrudes, so that a built-in contact is opened and closed. The door switch 132B is pushed by a pin 135 which is fixed to the door 114 side and protrudes, and the built-in contact is opened and closed.

Reference numeral 136A is an interlocking rod that transmits the movement of the door 114 to the latch switch 132A, and is urged toward the door by a compression spring so as to always return to the door side.
Reference numeral 136B is an interlocking rod that transmits the movement of the door 114 to the door switch 132B, and is urged toward the door by a compression spring so as to always return to the door side.

Reference numeral 137 is a support plate to which the latch switch 132A, the door switch 132B, the monitor switch 133 (not shown), the interlocking rods 136A, 136B, etc. are collectively attached. The support plate 137 is fixed to the lower case 101 with a plurality of screws. The door open/close detection mechanism 131 is mainly composed of various switches mounted on the support plate 137 as described above.

When variations occur in the mounting positions of the latch switch 132A and the door switch 132B in the manufacturing process, there is a concern that the timing of operating each switch deviates from the specified value. Therefore, in the first embodiment, the door opening/closing detection mechanism 131 is attached to the support plate 137 (see FIG. 34), and the entire support plate 137 can be removed. Specifically, as described above, the lower case 101 is firmly fixed to the support plate 137 with a plurality of screws. At the time of manufacturing or after-sales service, operation confirmation, adjustment, replacement, etc. of the door opening/closing detection mechanism 131 can be performed.

7 to 9, 138A is a communication port formed in the upper part of the case A150 accommodating the inverter circuit board 121, and 138B is a communication port formed in the upper and lower intermediate parts of the case A150.

As shown in FIG. 9, the communication port 138A guides a part of the cooling air RF5 from the third cooling fan 128 to the space 141 described later.

As shown in FIG. 9, the communication port 138B guides a part of the cooling air RF5 from the third cooling fan 128 to the space 142 described later and is used for cooling the infrared temperature sensor 160 described later. There is.

The temperature sensor 160 includes a hollow sensor case, a sensor board housed inside the sensor case, one or more infrared detecting elements mounted on the surface of the sensor board, and the infrared detecting element. The lens mounted and fixed to the sensor case is configured as a main component. The temperature sensors 160 may be provided at a plurality of locations in the heating chamber 113 so that the temperature can be detected in a wide range. Further, the direction of the temperature sensor 160 is not fixed and the temperature sensor 160 is automatically swung within a certain angle range. The temperature may be detected at a wide angle. For example, Japanese Patent Laid-Open No. 2018-54250 proposes using a plurality of temperature sensors.

In FIG. 9, reference numeral 161 denotes a detection window that faces the temperature sensor 160, and a gap through which cooling air passes may be formed between the temperature sensor 160 and the outer peripheral surface of the temperature sensor 160. In the first embodiment, a gap of about several mm is formed.

The heating chamber 113 is entirely formed of a thin metal plate such as a stainless steel plate. 162 is a cooking dish made of porcelain or heat-resistant plastic. The cooking dish 162 is formed to have an outer dimension that can be put in and put out from the front opening 113A of the heating chamber 113.

In FIG. 9, HV is an effective height dimension from the upper surface of the cooking dish 162 to the ceiling surface of the heating chamber 113. HX is the maximum height dimension from the upper surface of the cooking dish 162 to the ceiling surface of the recess 113T formed by recessing the center of the heating chamber 113 upward. In the first embodiment, the effective height dimension HV is 94 mm and the maximum height dimension HX is 100 mm. This is an example, and the present invention is not limited to configurations of this size.

In FIG. 10, WH is the inner lateral width dimension of the heating chamber 113. Since the heating chamber 113 is formed up to the front opening 113A with this inner lateral width dimension, it can be said that it is a frontage dimension that determines whether or not a cooking utensil or a cooking utensil such as a frying pan can be inserted. The inner lateral width dimension WH is 310 mm.

An electric radiation type heater 163 heats the heating chamber 113 from the outside, and is, for example, a sheath heater. The heater 163 is composed of two heaters.
163A is an upper heater that is fixed in close contact with or close to the ceiling surface of the heating chamber 113, and 163B is a lower heater that is fixed in close contact with or close to the bottom surface of the heating chamber 113. .

The upper heater 163A can select multi-step thermal power in the range of maximum thermal power 1200 W to minimum thermal power 50 W. Further, the lower heater can also select multi-step thermal power in the range of maximum thermal power 1200 W to minimum thermal power 50 W.

In FIG. 9, reference numeral 166R is a right partition plate vertically installed so as to form a gap GP5R between the right wall surface of the heating chamber 113 and is formed of a thin metal plate.
Reference numeral 166L is a left partition plate that is vertically installed so as to form a gap GP5L between the left wall surface of the heating chamber 113 and is formed of a thin metal plate.
A heat insulating material (not shown) is inserted in the gaps GP5L and GP5R on the left side and the right side of the heating chamber 113 to suppress heat conduction in the heating chamber 113.

Reference numeral 167 denotes an upper heat shield plate which covers the entire upper portion of the upper heater 163A, and is made of a thin metal plate or heat resistant plastic.
The GP 6 is a space formed between the upper heat shield plate 167 and the upper heater 163A, and has a size of several mm to 10 mm. The gap GP6 is a closed space so that air does not flow to the outside. The peripheral portion of the upper heat shield plate 167 is fixed in close contact with the ceiling surface of the heating chamber 113 with the upper end edges of the right partition plate 166R and the left partition plate 166L sandwiched therebetween.

Reference numeral 168 is a lower heat shield plate having a vertical cross-sectional shape that is vertically symmetrical with the upper heat shield plate 167. The lower heat shield plate covers the entire lower side of the lower heater 163B and is made of a thin metal plate or a heat resistant plastic.

The GP 7 is a space formed between the lower heat shield plate 168 and the lower heater 163B, and has a size of several mm to 10 mm. This void is a closed space so that air does not flow to the outside. The peripheral portion of the lower heat shield plate 168 is fixed to the bottom wall surface of the heating chamber 113 in a close contact state with the lower end edges of the right partition plate 166R and the left partition plate 166L sandwiched therebetween.

Reference numeral 169 is an upper case that is overlapped with the peripheral portion of the upper heat shield 167 so as to cover the entire upper portion of the upper heat shield 167. Reference numeral 170 denotes a lower case which is overlapped with a peripheral portion of the lower heat shield plate 168 so as to cover the entire lower side of the lower heat shield plate 168.

As shown in FIG. 9, the upper case 169 and the lower case 170 are vertically symmetrical in vertical cross section, and are formed of a thin metal plate or a heat resistant plastic. The GP 8 is a space formed between the upper case 169 and the upper heat shield plate 167, and has a size of several mm to 10 mm. The gap GP8 is a closed space so that air does not flow to the outside.

The GP 9 is a space formed between the lower case 170 and the lower heat shield plate 168, and has a size of several mm to 10 mm. The gap GP9 is a closed space so that air does not flow to the outside.

A sheet or plate-shaped heat insulating material 175A (not shown) is arranged in the gap GP6. Similarly, a sheet- or plate-shaped heat insulating material 175B (not shown) is arranged in the gap GP8.

A heat insulating material 175C (not shown) in the form of a sheet or a plate is arranged in the gap GP7. Similarly, in the GP 9, a sheet- or plate-shaped heat insulating material 175D (not shown) is arranged. When each of these heat insulating materials 175A to 175D has a form in which a plurality of layers are stacked instead of a single layer structure, the heat insulating performance is further improved. The planar size (longitudinal and lateral dimensions) of each of the heat insulating materials 175A to 17D is larger than the installation range of at least the upper heater 163 and the lower heater 163B.

In FIG. 9, reference numeral 171 denotes a partition plate in which a passage 172 through which the cooling air RF5 flows is partitioned and formed above the upper case 169. A communication port 173 is opened in the upper part of the rear wall surface of the partition plate 171 and the inlet end of the exhaust duct 102 is connected to the communication port 173.
A communication port 174 is formed in the rear portion of the ceiling surface of the heating chamber 113, and the communication port 174 is connected to the inlet of the exhaust duct 102. 102E is a terminal part which becomes a final exit of cooling air.

As shown in FIG. 10, the exhaust duct 102 has two independent upper and lower internal passages 102A and 102B, of which the upper internal passage 102A cools the inverter circuit board 121. After that, the cooling air RF5 flows.
In addition, the cooling air RF6 introduced into the heating chamber 113 and having a raised temperature flows through the other internal passage 102B.

Due to the outlet of the cooling air RF5 having a narrowed opening area of the air passage, the wind speed of the cooling air RF5 increases. Therefore, the cooling air RF6 is attracted by the cooling air RF5 near the discharge port. By such an action, the gas inside the heating chamber 113 is sucked into the internal passage 102B.
As a result, the two cooling airs RF5 and RF6 are both efficiently discharged from the exhaust port 20 to the outside of the cooking device 1. Note that, instead of adopting such an attracting structure, it is possible to adopt a method of merging at an upstream stage before entering the exhaust duct 102.

In FIG. 10, reference numeral 180 denotes a large power supply port formed on the back wall (rear wall surface) 113B of the heating chamber 113, and 181 is a cover for closing the power supply port 180 from the outside, a heat-resistant plastic that transmits microwaves. It is made of heat-resistant glass in a plate shape. The cover 181 is fixed to the outside of the back wall (rear wall surface) 113B.

The cover 181 is in close contact with the back wall (rear wall surface) 113B. The antenna case 124 is fixed to the back wall 113B of the heating chamber 113 so as to cover the entire back side of the cover 181. The cover 181 is inserted inside the front opening of the antenna case 124 as shown in FIG.

Reference numeral 123 is a waveguide connected to the back side of the cover 181. The antenna driving motor 126 is thus fixed to the back side of the waveguide 123 via the heat-resistant sealing material 184.

126A is a rotating shaft of the antenna driving motor 126, and is horizontally installed in the front-rear direction. The antenna 125 is fixed to the free end side (front end) of the rotating shaft 126A. Although the rotating shaft 126A is formed of plastic or ceramic material, only a certain range from the antenna 125 side is made of metal, and the antenna driving motor 126 is insulated from the heat resistance of plastic, ceramic or the like. It may be formed of a material having excellent properties.

Reference numeral 185 is a radio wave sealing chamber formed around the rotating shaft 126A and having a predetermined size. This radio wave sealing room has a so-called choke room structure. Further, in order to prevent microwave leakage more effectively, a radio wave absorber (not shown) is arranged on the side closer to the antenna driving motor 126 than the choke structure, and microwaves from around the rotary shaft 126A are arranged. You may try to prevent leakage. The choke structure in the microwave heating device is disclosed in Japanese Patent Documents, for example, JP2011-174669A, JP2010-255978A, and JP63-172828A (a quarter wavelength choke). Since the room and the electromagnetic wave absorber are used together), detailed description is omitted.

In FIG. 10, LA indicates the dimension from the rear wall (rear wall surface) 113B of the heating chamber 113 to the rear end of the antenna driving motor 126. Hereinafter, this dimension will be referred to as the "projection dimension". Although it is desirable to reduce this protrusion dimension LA, in reality, as described above, the dimensions of the antenna case 124 and the radio wave sealing chamber 185 are also required, and even if the outer dimensions of the antenna drive motor 126 are reduced, there is a limit. There is. This dimension LA is 70 mm.

In FIG. 10, GP10 is a gap between the rear surface of the antenna driving motor 126 and the inclined portion 101C of the lower case 101, and the upper end of the motor 126 is 69 mm, and conversely, the gap between the lower end and the lower case 101C is 53 mm. It is a degree. Since it is impossible to dispose the case C154 in the gap GP10 in terms of dimensions, in the first embodiment, the case C154 is displaced rightward from the back (back) of the antenna drive motor 126. It is arranged.
This allows the microwave heating device 120 to be built in a narrow space behind the heating chamber 113.

Next, the internal structure of the door 114 will be described.
In FIG. 10, reference numeral 190 is a metal or plastic frame that forms the outer shell of the door 114, and is formed in a frame shape when viewed from the front side. Reference numeral 192 denotes an inner frame, which is formed of a metal plate. An opening serving as a viewing window 192W is formed in the center of the inner frame 192.

Reference numeral 191 denotes a cover having an outer peripheral edge portion fixed between the inner frame 192 and the frame 190 so as to cover the entire front side of the inner frame 192, which is transparent and heat resistant so that the heating chamber 113 can be seen. It is made of plastic or glass.

Reference numeral 193 denotes an inner seal frame in which a large number of small holes having a size that does not allow microwaves to pass through are formed in a portion corresponding to the viewing window 192W. The inner seal frame is entirely formed by press-molding a thin metal plate, and a choke chamber 194 having an inlet (slit) on the heating chamber 113 side is formed in the outer peripheral edge portion.

Reference numeral 195 is a seal plate made of a thin metal plate. The outer peripheral edge portion of the seal plate 195 is bent in series toward the inner seal frame 193 side as shown in FIG. The choke chamber 194 is a space surrounded by the outer peripheral edge of the seal plate 195 and the inner seal frame 193, and forms the choke chamber 194.

When the door 114 is completely closed, both the outer peripheral edge of the seal plate 195 and the inner seal frame 193 are in contact with the surface of the front plate 101F of the lower case 101. Therefore, the microwave supplied into the heating chamber 113 does not leak from the door 114 and the opening 113A on the front surface of the heating chamber 113.

Reference numeral 196 is a transparent seal plate provided inside the portion of the inner frame 192 corresponding to the viewing window 192W, and is made of heat resistant glass. Reference numeral 197 denotes an upper shield plate made of metal having a lateral width dimension at least equal to the lateral width of the door 114 along the upper surface of the door 114. The upper shield plate 197 is provided in the shape of an eave near the upper surface of the door 114, and is fixed to the lower case 101 by a fixing tool such as a metal screw so as to be electrically connected to the lower case 101.

Since the lower portion of the door 114 is supported by the lower case 101 by a hinge portion (not shown), the door 114 can be opened by pulling the handle portion 115 toward you.
At the initial stage of such opening, there is a risk that a gap is momentarily generated at the overlapping portion of the door 114 and the lower case 101 and a part of the microwave leaks. Accordingly, such unnecessary microwave leakage can be suppressed above the door 114.

In FIG. 12, 201 is an inlet formed in the front part of the right side wall surface of the heating chamber 113, which is formed of a large number of holes having a small diameter so that microwaves do not leak. The reason why the inlet 201 is provided in the front part of the right wall surface of the heating chamber 113 is to supply a part of the cooling air RF6 to the vicinity of the inside of the door 114 and suppress the fogging of the observation window 192W of the door 114. is there.
The cooling air RF6 after cooling the heat radiation portion 122H of the magnetron 122 is guided to the inlet 201 by the gap GP5R.

Since the temperature sensor 160 is provided on the upstream side of the flow of the cooling air RF6 from the inlet 201, a part of the cooling air RF6 is blown out into the heating chamber 113 at the temperature sensor 160 portion. The amount of the cooling air RF6 reaching the inlet 201 is small. However, the purpose of injecting air from the inlet 201 is to “fogging suppression” of the seal plate 196 inside the door 114, and there is no problem even with a small air volume. It should be noted that it is not necessary to adopt the supply of air from the narrow gap around the temperature sensor 160.

Next, details of the control means will be described with reference to the block diagram shown in FIG.
The microwave heating controller 130 controls the electric power supplied to the inverter circuit 121A of the inverter circuit board 121, the magnetron 122, the antenna driving motor 126, and the two cooling fans 128 and 129, and starts their operations. , Stop and operating conditions are controlled.

The power supply circuit of the microwave heating controller 130 is prepared separately from the power supply circuit 91 mounted on the power supply circuit board 55 and is a dedicated circuit of the microwave heating device 120.
The power supply circuit of the microwave heating control unit 130 is mounted on the power supply circuit board 127. On this power supply circuit board 127, various electric components (diodes, etc.) for converting an AC power supply into a DC power are mounted and housed in a case C154 in a sealed state (see FIG. 7).

When the microwave heating controller 130 receives the command signal from the power controller 72, the microwave heating controller 130 operates to reduce the total power consumption of the microwave heating device 120 according to the command signal, and outputs the magnetron 122. Has a function of transmitting a command signal for lowering the voltage to the inverter circuit 121A.

The microwave heating control unit 130 includes a temperature sensor TS1 that detects the temperature of the heat radiation unit 122H of the magnetron 122. If the temperature of the heat radiating portion 122H of the magnetron 122 is higher than the specified value even after the microwave heating and cooking is finished, a command signal for continuing the operation of the fourth cooling fan 129 until the temperature drops is given. Send to fan 129.

Reference numeral 139 is a closing detector of the door 114. The closing detection unit 139 detects the opening/closing state of any one or more of the latch switch 132A, the second door switch 132B, and the monitor switch 133 by the current flowing in each circuit or the opening/closing signal.

Since the circuit board forming the closing detection unit 139 is attached to the support plate 137, it is determined whether or not the circuit board operates normally by removing the support plate 137 for inspection or performing measurement with the support plate 137 installed. Can be inspected (see FIG. 7).

Reference numeral 158 denotes a non-contact temperature measurement unit (infrared temperature measurement unit) that detects the temperature of food, cooking utensils, etc. placed in the heating chamber 113, and outputs the temperature sensor 160 and a measurement signal from this temperature sensor. It is composed of a circuit (not shown) for analyzing and converting into temperature information.

The heating chamber control unit 159 controls the electric power supplied to the upper heater 163A and the lower heater 163B, and controls the start and stop of their operations and the operating conditions (heat power, that is, the amount of heat generated). The control circuit of the heating chamber controller 159 is mounted on a control circuit board (not shown).

When the heating chamber control unit 159 receives the command signal from the power control unit 72, the heating chamber control unit 159 operates to reduce the total power consumption of the upper heater 163A and the lower heater 163B according to the command signal, and the upper heater 163A. And a function of transmitting a command signal for lowering the output of the lower heater 163. In addition, in order to reduce the outputs of the upper heater 163A and the lower heater 163, the energization rate per unit time is changed to change the substantial heating power.

Next, a configuration example of a drive circuit for the IH coils 17L and 17R of the heating cooker 1 will be described. In the description of FIG. 17, an example of a circuit showing only one IH coil 17R will be described.

In the heating cooker 1, high frequency power is supplied to the IH coils 17L and 17R by the drive circuit 74 to perform the induction heating operation.
The drive circuit 74 is provided for each IH coil. FIG. 17 is a diagram showing a configuration example of the drive circuit 74 of the IH coil 17R. The drive circuits of the left IH coil 17L may be the same or different.

As shown in FIG. 17, the drive circuit 74 includes a DC power supply circuit 75, an inverter circuit 81R, a resonance capacitor 76, an input current detection unit 77a and an output current detection unit 77b.
The current detection data of the input current detection unit 77a and the output current detection unit 77b are sent to the control device 90.

The input current detection unit 77a detects a current input from the AC power supply 99 to the DC power supply circuit 22, that is, a current input to the drive circuit 74, and sends a voltage signal indicating the detected value, that is, the input current value to the control device 90. Output. 99 is a commercial AC power supply.

The DC power supply circuit 75 includes a diode bridge 78a, a reactor 78b, and a smoothing capacitor 78c, converts the AC voltage input from the AC power supply 99 into a DC voltage, and outputs the DC voltage to the inverter circuit 81R.

The inverter circuit 81R is a so-called half-bridge type inverter in which IGBTs 79a and 79b as switching elements are connected in series to the output of the DC power supply circuit 75. In the inverter circuit 81R, diodes 79c and 79d as flywheel diodes are connected in parallel with the IGBTs 79a and 79b, respectively.
The inverter 81R converts the DC power output from the DC power supply circuit 75 into high-frequency AC power of about 20 kHz to 80 kHz, so-called high-frequency power, and supplies it to the resonance circuit including the IH coil 17R and the resonance capacitor 76.

The resonance circuit including the resonance capacitor 76 has a resonance frequency according to the inductance of the IH coil 17R, the capacitance of the resonance capacitor 76, and the like.

With this configuration, a high-frequency current of about several tens of amperes flows in the IH coil 17R, and the object 5 to be heated on the top plate 15 immediately above the IH coil 17R is induced by the high-frequency magnetic flux generated by the flowing high-frequency current. Be heated.

The IGBTs 79a and 79b are made of, for example, a semiconductor made of silicon, but may be made of a wide band gap semiconductor such as silicon carbide or gallium nitride based material.

By using a wide band gap semiconductor for the IGBTs 79a, 79b as switching elements, the conduction loss of the IGBTs 79a, 79b as switching elements can be reduced. Further, even if the switching frequency, that is, the drive frequency is set to a high frequency, that is, the switching is performed at high speed, the heat dissipation becomes good. Therefore, the heat radiation fin of the heat sink 82 to which the switching elements (IGBTs) 79a and 79b are attached can be downsized, and downsizing and cost reduction of the drive unit can be realized.

The output current detector 77b is connected to a resonance circuit including an IH coil 17R and a resonance capacitor 76. The output current detection unit 77b detects, for example, a current flowing in the IH coil 17R, that is, a current output from the drive circuit 74, and outputs a voltage signal corresponding to the detected value to the control device 90. In this configuration, the half bridge type inverter has been described, but the circuit for driving the IH coil 17R may be a full bridge type inverter.

The wireless communication unit 49 is a wireless communication unit for performing wireless communication with a home control device (not shown) that integrally manages the power consumption amount and operation information of home electric appliances in the home. Wireless signals can be transmitted and received. The home control device can also be connected to a portable information terminal such as a smart phone, a tablet terminal device, or the like via a public wireless communication network such as the Internet.

The wireless communication unit 49 is connected to the integrated control device MC by wiring, but the longer the wiring, the more susceptible to noise. Therefore, the wireless communication unit 49 and the integrated control device MC are arranged close to each other, and the wireless communication unit It is desirable to shorten the wiring connecting 49 and the integrated control device MC.

In consideration of the above-mentioned influence of noise, the wireless communication unit 49 is installed at the right end of the input operation unit 40 in the first embodiment. Specifically, the wireless communication unit 49 is installed at the right end of the operation board 41. Further, the integrated control device MC is installed in the left and right central portions of the input operation unit 40 (see FIG. 14).

The wireless communication unit 49 has an antenna unit for transmitting, receiving, or transmitting/receiving a wireless signal inside, and the antenna unit of the wireless communication unit 49 is provided directly below the top plate 15 in order to make it easier to transmit/receive the wireless signal. It is desirable to arrange so that

(Operation of cooking device)
Next, an outline of the operation of the heating cooker 1 having the above configuration will be described mainly with reference to FIGS. 18 to 24.

FIG. 18 is a flowchart for explaining the overall control operation of the heating cooker 1 before the start of cooking.
FIG. 19 is a flow chart for explaining the control operation at the time of induction heating cooking in the heating cooker 1.

FIG. 20 is a flowchart for explaining the control operation in the case of performing microwave heating during induction heating cooking in the heating cooker 1. FIG. 21 is a flow chart for explaining the control operation of the heating cooker 1 of FIG. FIG. 22 is a flow chart for explaining the control operation of the heating cooker 1. FIG. 23 is a flowchart for explaining the control operation of the heating cooker 1. FIG. 24 is a list showing a correspondence relationship between the cooling fan of the heating cooker 1 and the type of heating cooking.

18 will be described.
A basic operation program from turning on the power to starting preparation for cooking is stored in the storage device MM inside the integrated control device MC.
In the built-in type cooker 1, since the power plug 106A is always connected to the commercial (AC) power source 99 since the kitchen furniture 2 is installed, the user can operate the operation button 98 of the main power switch 97 (see FIG. 15). ) To turn on the power (step ST1 in FIG. 18).

Then, a predetermined low power supply voltage is supplied to the integrated control device MC via the DC power supply conversion unit 92 in the power supply circuit board 55, and the integrated control device MC is activated. The control program of the integrated control device MC itself starts diagnosis of its own abnormality.

Then, it is checked whether or not there is an abnormality in the control device 90 that centrally controls the induction heating source 17, the heating chamber control unit 159, and the microwave heating control unit 130.

A total of seven temperature sensors TS3 to TS9 are connected to the temperature detection circuit 93 of the upper unit 100 in order to detect the temperature of the top plate 15, the inverter circuits 81L and 81R, the temperature in the vicinity of the central display unit 30, and the like. Therefore, the temperatures detected by these temperature sensors are transmitted to the temperature detection circuit 93. As a result, the control device 90 can determine whether there is an abnormality (ST2).

Further, also in the heating chamber controller 159 and the microwave heating controller 130, it is possible to determine the presence/absence of abnormality by acquiring the detected temperatures from the temperature sensors TS1 and TS2.

In step ST2, there is "send activation information to the outside", but this is "in-home control device" called "integrated information management device" or "integrated power control device" in the living space such as kitchen from the wireless communication unit 49. (Not shown) means to give advance notice of the start of operation of the heating cooker 1. This will be explained later.

Since the control device 90 collects the temperature information of the main constituent parts built in the upper unit 100, the control device 90 performs the abnormal heating determination process as the abnormality monitoring control before the start of cooking. For example, when the temperature detected by the temperature sensor TS7 is higher than the heat resistant temperature (for example, 70° C.) of the electronic element such as the liquid crystal display screen in the central display unit 30, the control device 90 determines that the temperature is abnormally high. Then, processing such as notifying the integrated control device MC of the abnormality and displaying or notifying that the operation cannot be started is executed.

When no abnormality is found, the control device 90 sends a signal to the integrated control device MC. Then, the central display unit 30 is activated to display that "there is no abnormality, so cooking can be started" (ST3).
At the same time, the voice synthesizer 95 informs by voice the same contents as those displayed on the central display section 30 (ST3).

In step ST3, the wireless communication unit 49 accesses the “home control device” and acquires information such as a cooking menu and recipe information useful for health management within a range set by the user in advance. For example, the information that the user of the cooking device 1 has previously transmitted to the "home control device" via the Internet line by using the portable information terminal device or the like can be acquired when the central display unit 30 is activated. .. When some information is acquired, a special caution information lamp (not shown) provided near the input operation section 40 of the upper unit 100 is turned on to notify the user.

Next, after the abnormality determination is completed as described above, the integrated control device MC uses the central display unit 30 and the voice synthesizing device 95 to give a notification for prompting the selection of the heating means and voice guidance (ST4).

Then, the control device 90 determines whether or not the heating source of the lower unit 200 has been selected from the operation information of the central operation unit 40M in the input operation unit 40 (ST5).

When the selection is not made within a certain grace period (for example, 30 seconds), or immediately after step ST4, the user operates at least one of the left operation unit 40L and the right operation unit 40R. In this case, it is determined that only the heating source of the upper unit ST6, that is, the IH coils 17L and 17R are selected (“Yes” in step ST6).

When step ST6 is “Yes” as described above, the process proceeds to the next step ST10. Subsequent induction heating control steps will be described later with reference to FIG.

On the other hand, when the heating source of the lower unit 200 is selected in step ST5, the integrated control device MC proceeds to the step ST8 of selecting two heating sources provided in the lower unit 200.

In step ST8, as shown in FIG. 18, four menus are displayed in a list on the central display section 30. Or, they are sequentially displayed in a fixed order.

The menu displayed at the stage of step ST8 of FIG. 18 displays the following four menu selection parts based on the heating source of the lower unit 200.
(1) A cooking menu using at least one of the upper heater 163A and the lower heater 163B (ST9A).
(2) A cooking menu (ST9B) in which the microwave heating device 120 is used in addition to the above (1).
(3) Cooking menu (ST9C) that also uses the microwave heating device 120.
(4) Cooking in which at least one of the upper heater 163A and the lower heater 163B, at least one of the microwave heating devices 120, and the induction heating source (IH coils 17L, 17R) of the upper unit 100 are combined. Menu (hereinafter referred to as "coordinated cooking menu") (ST9D).

Although the route from step ST10 to the step ST9D is shown by a broken line, it is better to perform the cooperative cooking from the middle after the operation for selecting the heating source of the upper unit 100 is advanced. If it is found that the menu for cooperative cooking can be selected without returning to step ST5. Further, similarly to this, the cooperative cooking can be selected on another occasion so that the cooperative cooking can be started from the middle. This will be described with reference to FIG.

FIG. 19 shows the operation steps of the integrated control device MC after the step of selecting the induction heating menu (ST11).

Next, the control operation at the time of induction heating will be described with reference to FIG.
In the following, an example using the heating unit on the right side will be described.
When the input key 45R on the right side is touched, the controller 90 determines that the user has instructed the heating preparation operation.

It is estimated whether or not an object to be heated (metal pan, frying pan, etc.) is placed above the IH coil 17R, or whether or not the bottom area of the object to be heated is larger than a predetermined value. It is transmitted to the control device 90, and it is determined whether the heat treatment suitable for the standard diameter pot or the large diameter pot is performed (step MS1).
If it is a compatible pan but is a large diameter pan, or if it is incompatible with heating, it will be treated differently from the standard pan.

In response to the command from the control device 90, the integrated control device MC displays on the display screen of the central display unit 30 a message prompting the user to select the desired "control mode" of cooking (MS2).

When the user selects and inputs the "control mode" of cooking, the heat power, the cooking time, and the like using the input operation unit 40 (MS3), the induction heating operation is started in earnest (MS4).
The "control mode" (control menu) displayed on the central display unit 30 includes "high speed heating", "fried food", "boiling water", "preheating", "cooking rice", "boiled", "boiling water + heat retention", It is eight called "cooperative heating".

When the user selects any one of these eight control modes, the control conditions corresponding to those control modes are automatically selected by the built-in program of the control device 90, and the energizing amount (thermal power) of the IH coil 17R is set. ), energization time, etc. are set. Depending on the cooking menu, a display prompting the user to set an arbitrary heating power, energizing time, etc. is displayed on the display unit (MS5).

Unless the user operates the key 45R within a certain time (for example, 30 seconds) after the above display, the controller 90 drives the inverter circuit 81R of the induction heating circuit 94R after the lapse of that time. Then, induction heating is started (MS6).

The case of the "large-diameter pot" is basically the same as the steps MS1 to MS7, but as the control mode, some of the eight control modes shown in FIG. 19 cannot be selected. In the "fast heating mode", the large-diameter IH coil 17L on the left side can be used to heat only the "normal pan" or "large-diameter pan". In the first embodiment, the small pot means a pot bottom having a diameter of less than 10 cm, which is detected as not suitable for induction heating and cannot be induction heated.

Next, the integrated power control operation when two or more heating sources of different types such as induction heating and microwave heating are used simultaneously will be described with reference to FIGS. 20 to 22. Note that the examples described in FIGS. 20 to 22 are not the case of the above-mentioned “coordinated cooking”.

The example shown in FIG. 20 is a case where the user tries to perform microwave heating using the heating chamber 113 of the lower unit 200 while the induction heating cooking is being performed in the upper unit 100 for the first time. It should be noted that even when the upper heater 163A and/or the lower heater 163B are used to perform oven cooking, grill cooking, or the like during the induction heating cooking, as described with reference to FIG. Basic total power control (in the entire cooking device 1) is performed by the integrated control device MC and the power control unit 72.

When the user tries to perform microwave heating using the heating chamber 113 of the lower unit 200 during the period of induction heating cooking, first, the central operation unit 40M of the input operation unit 40 causes the lower operation of the lower unit 200. There is a method of selecting the heating source.
However, a simple method is to open the door 114 as it is. That is, in the first embodiment, when the upper unit 100 is in operation (when the main power switch 97 is in the ON state), the lower unit 200 can start cooking as it is. Therefore. It is not necessary to turn on the main power switch 97 as in the upper unit 100.

When the door 114 is opened, there is a latch switch 132A and a door switch 132B that are opened and closed according to the opening and closing of the door 114 as described in the main part of the door open/close detection mechanism 131. Then, the integrated control device MC may monitor the opening of the latch switch 132A and/or the door switch 132B by an appropriate means (such as a sensor or a switch).

In FIG. 20, when the signal indicating that the door 114 of the heating chamber 113 is opened as described above is received, the integrated control device MC sets the heating power (power consumption) corresponding to the microwave heating menu to the user. To confirm (step S2). For example, when it is detected that food or the like is put in the heating chamber 113 and the door 114 is closed, the user is inquired with a voice guide or the like such as "set the heat power".

When the user inputs the thermal power with the central operation unit 40M, the process proceeds to the next step S3.
Alternatively, when the user simply gives an instruction to “start heating” with the central operation unit 40M, the power consumption of the third cooling fan 128, the fourth cooling fan 129, etc. is added to the rated power consumption value determined by the magnetron 122. Using the power consumption value that is reflected and is known in advance, the integrated control device MC determines in step S3 whether the total power regulation value is exceeded.

For example, since the integrated control device MC retains the thermal power value of the induction heating cooking that has started first and the power consumption of the first cooling fan 60 and the second cooling fan 61 as data, the power consumption of the upper unit 100 is also held. And the total value of the power consumption of the microwave heating device 120 can be calculated. The integrated control device MC may acquire the power consumption data of the inverter circuit 81 at the stage when the central operation unit 40M is operated.

If step S3 is "Yes", it is necessary to reduce the output of the operating IH coil 17R or reduce the microwave heating power. In step S3, the priority of the induction heating cooking at that time is determined from the induction heating cooking menu and the control mode. For example, when rice is cooked by the upper unit 100, that rice is prioritized and the heating power of the heating source of the upper unit 100 is not reduced.

In addition, when "fried food" is performed in the upper unit 100, the fried food is automatically controlled to increase the heat power so that the temperature of the cooking oil does not excessively decrease in accordance with the addition of foods. Therefore, even in such a case, the heating power of the heating source of the upper unit 100 is not reduced.

When it is determined in step S5 that the induction heating is prioritized, the power consumption of the microwave heating is reduced. Therefore, if the microwave rated output is 600 W (power consumption is 1000 W), the power consumption is temporarily reduced. Output, for example, to 300 W. Then, the user is notified that such a restriction is to be made. The notification is performed by the central display unit 30 and the voice synthesizer 95 (S6).

Then, the integrated control device MC issues a command signal to the microwave heating control unit 130 to start microwave heating with low thermal power (S7).
Since the non-contact temperature measuring unit (infrared temperature measuring unit) 158 for detecting the temperature of the food or cooking utensil placed in the heating chamber 113 is included, whether the food is heated to reach the target temperature or not. Is monitored by the microwave heating control unit 130 (S8).

If the target temperature is not reached, it is determined whether or not the induction heating operation of the upper unit 100 is completed (S9). The above steps S8 and S9 are repeated until the target temperature is reached.

When the target temperature is reached, the microwave heating control unit 130 outputs a signal to the integrated control device MC. Then, the process proceeds to the next step S12 to notify that the microwave heating is completed.

When the induction heating is completed, the process proceeds to step S10, where a command is issued to the microwave heating control unit 130 to restore the preset heating power intended by the user to continue the microwave heating (S10). Then, the temperature of the object to be heated is continuously monitored (S11).

Then, when the target temperature is reached, the integrated control device MC receives a signal from the microwave heating control unit 130, proceeds to step S12, and notifies that the microwave heating is completed.
In the example shown in FIG. 20, the temperature of the object to be heated is monitored, and the microwave heating is terminated when the target temperature is reached. However, there is also a control method of measuring the irradiation time of microwaves and ending the cooking when the set time has elapsed, so that FIG. 21 will be described next.

FIG. 21 is an example of a case where a control method of ending cooking with microwave irradiation time is adopted.
Description up to step S6 will be omitted because it is the same as in FIG.

When starting microwave heating in step 7, the microwave heating controller 130 calculates correction (extension) of the heating time when the output of the magnetron 122 is reduced to a certain value. Then, in step S8, the time after the extension is determined as "setting time 1" (S8), and steps 9 and 8 are repeated.

In the process, when the induction heating of the upper unit 100 is completed, the operation required time (set time 2) is recalculated again in consideration of the elapsed time from the start of heating (step S7).

Then, when the set time 2 has elapsed, the microwave heating is ended and this is notified (S12). It should be noted that temperature monitoring by the non-contact temperature measuring unit (infrared temperature measuring unit) 158 may be used together until the set time 2 elapses.

Next, FIGS. 22 and 23 will be described.
22 and 23 are flowcharts for explaining the control operation of the heating cooker 1. In the example shown in FIG. 22 and FIG. 23, the user tries to perform microwave heating using the heating chamber 113 of the lower unit 200 during the induction heating cooking in the upper unit 100 first. This is the case. Even in this case, the basic total power control (in the entire cooking device 1) as described in FIG. 20 is performed by the integrated control device MC and the power control unit 72.

22 and 23, unlike FIGS. 20 and 21, between the integrated control device MC, the microwave heating device 120, the induction heating device including the IH coils 17L and 17R and the inverter circuit 81, and the like. It also shows the exchange of signals.

22 and 23, L1 to L10 indicate the generation timing of each operation signal, command signal, and the like. When the main power switch 97 is turned on in the upper unit 100, a start signal is transmitted to the integrated control device MC (L1).

Thereafter, when the input operation unit 40 determines the thermal power of the IH coils 17L and 17R, the control mode, and the like (see steps MS2 and MS3 in FIG. 19), information indicating the contents is transmitted via the integrated control device MC (L2). .. That is, the control device 90 receives the information indicating the conditions such as the maximum thermal power and the operating time at the time of induction heating from the integrated control device MC. Then, if there is an induction heating start command from the input operation unit 40, the control device 90 causes the induction heating circuits 85L and 85R to start the heating operation.

A case where the microwave heating is started when the induction heating cooking is started in this way will be described. It is assumed that the induction heating is started with the maximum thermal power of 3200 W of the left IH coil 17L.

When the user opens the door 114, either or both of the latch switch 132A and the door switch 132B are opened as described with reference to FIG. 20, so a sensor (not shown) that monitors the latch switch 132A and the door switch 132B opens the door 114. Is transmitted to the integrated control device MC (L3).

When the user inputs the thermal power with the central operation unit 40M, the integrated control device MC issues an operation start command signal to the microwave heating control unit 130. Then, the process proceeds to the next step S3.
Alternatively, when the user simply gives an instruction to “start heating” with the central operation unit 40M, the integrated control device MC issues a command signal to start operation to the microwave heating control unit 130.

If there is no abnormality on the microwave heating control unit 130 side, the microwave heating control unit 130 sends a "notice signal" to start cooking to the integrated control device MC (L4).

Next, in response to the information from the integrated control device MC, the power control unit 72 reflects in advance the power consumption of the third cooling fan 128, the fourth cooling fan 129, etc. on the rated power consumption value determined by the magnetron 122. Using the known power consumption value, calculate the total power consumption value when microwave heating and induction heating are performed at the same time, and determine whether this total value exceeds the total power regulation value. (Same as step S3 in FIGS. 20 and 21). Then, the result is transmitted to the integrated control device MC.

If step S3 is "Yes", it is necessary to reduce the output of the operating IH coil 17R or reduce the microwave heating power. In the next step S4, the integrated control device MC determines the priority of the induction heating cooking at that time from the induction heating cooking menu and the control mode.

In the example of FIG. 22, the microwave heating is set to be prioritized, so the heating power of the microwave heating is not reduced.

When it is determined in step S5 that microwave heating has priority, in order to reduce the power consumption of induction heating, the microwave heating control unit 130 is instructed to control the target heating power of the IH coil 17R to reduce power consumption. Temporarily lower. The user is informed that such a restriction will be made. The notification operation is performed by the central display unit 30 and the voice synthesizer 95.

Then, the microwave heating control unit 130 commands the inverter circuit 81R to change the microwave heating to a low heating power (L5).

When the power reduction process on the inverter circuit 81R side is completed, the microwave heating control unit 130 determines from the current values of the input current detection unit 77a and the output current detection unit 77b that the power has been reduced. Then, the fact that the power reduction is completed is transmitted to the integrated control device MC (L6). In response to this transmission, the integrated control device MC transmits a heating operation start permission signal to the microwave heating device 120 (L7).

The inverter circuit 121A has a current detector (not shown) such as the input current detector 77a and the output current detector 77b used in the inverter circuit 81R of the upper unit 100.

Therefore, when the microwave heating is finished, the microwave heating control unit 130 determines from the current detection value of the inverter circuit 121A that the heating operation is finished, and notifies the integrated control device of the heating operation by a specific signal (L8). ). Further, the microwave heating may be performed for a certain time depending on the timer setting, and in that case, the microwave heating control unit 130 detects the elapse of the time and notifies that the heating operation is completed (L8).

After the microwave heating is completed, the integrated control device MC issues a command signal to the microwave heating control unit 130 so as to restore the preset heating power initially desired by the user (L9). Then, the heating power is raised to the first target level to continue the induction heating (S10).

Then, when the set cooking time or the target temperature is reached, the microwave heating control unit 130 ends the induction heating. Then, the integrated control device MC is notified that the operation is completed (L10).

(Basic operation of induction cooking)
Next, in the heating cooker 1 according to the first embodiment, the basic operation of each part when performing induction heating will be described.

When the start of induction heating cooking is commanded in the input operation unit 40, the control device 90 issues a drive command to the induction heating circuits 85, 85R corresponding to the designated heating unit, and the IH coils 17L, 17R are driven. The inverter circuits 81L and 81R are driven.

An operation command signal is output from the control device 90 to the cooling fan drive circuit 62.
The operation of the first cooling fan 60 and the second cooling fan 61 is started at the same time as the driving of the inverter circuits 81L and 81R is started, or at a timing slightly delayed.

The blowing capacities of the first cooling fan 60 and the second cooling fan 61 do not have to be fixed. For example, the blowing capacity may be automatically changed between the weak operation and the strong operation depending on the temperature of the temperature sensor TS8 of the heat sink 82 and the temperature of the temperature sensor TS that detects the temperature in the vicinity of the central display section 30.

In general, when the cooling fan is changed from the weak operation to the strong operation, the wind noise of the fan is increased, which may cause noise. Therefore, the temperatures detected by the two temperature sensors TS7 and TS8 and the operating intensities of the cooling fans 60 and 61 are determined as a correspondence table (data table) from the data of the blower test in advance, and the correspondence table is determined. It is stored in the storage device 90R of the control device 90. Then, the control device 90 may change the operating conditions of the first cooling fan 60 and the second cooling fan 61 at any time according to the data table.

When the first cooling fan 60 is operated, air is sucked from the ventilation hole 64 located directly below the first cooling fan 60. The cooling air RF1 is pushed into the first air passage F1 from the air outlet 60A as shown by the arrow in FIG.

When the second cooling fan 60 is operated, air is sucked from the ventilation hole 64 located directly below the second cooling fan 60. Cooling air RF2 is pushed into the second air passage F2 from the air outlet 61A as shown by the arrow in FIG.

The vent hole 64 located directly below the first cooling fan 60 and the vent hole 64 located directly below the second cooling fan 60 are individually provided adjacent to each other on the bottom surface of the upper case 16, but many The small hole group may be provided and the small hole group may be shared.

A diode 79c (see FIG. 17) and other electric components are mounted on the upper surface of the inverter circuit board 80, which are cooled by the cooling air RF1.

Two IGBTs 79a and 79b are used for one IH coil 17L. These two IGBTs are generically called a power control switching element 83.
Further, the power control switching element 83 is similarly used for the other IH coil 17L.

The two power control switching elements 83 generate heat during the induction heating operation, but are continuously cooled by the cooling air RF1.

The cooling air RF3 advances in the right direction while cooling the components such as various switches, the liquid crystal display screen, the display drive circuit 63, etc., which are arranged in the input operation unit 40 and receive an input operation.

Some of the cooling air RF1 changes its direction upward when it exits the outlet FO of the cover 70, but since the cooling air RF2 joining from the front side also has the momentum, the cooling air RF1 does not move above the cover 70 like the cooling air RF3. Is reversed to the left side and advances, and the one that advances toward the filter circuit board 54 as shown in the cooling air RF4 is roughly divided.

The cooling air RF3 flows below the right IH coil 17R and then flows directly below the left IH coil 17L. In this process, the two IH coils 17R and 17L are cooled. Generally, the temperature of this type of IH coil rises to around 250°C to 300°C during the induction heating operation. Therefore, as described above, the cooling air RF3 is formed by combining the two cooling airs RF1 and RF2.

As described with reference to FIGS. 13 and 14, the exhaust window 52A exists only in the length indicated by the reference symbol LF in the range on the left side of the left and right center lines CL1. Therefore, the cooling air RF4 travels leftward after passing through the filter circuit board 54, passes through the through hole 53A, and is discharged from the exhaust window 52A.

The cooling air RF3 that has cooled the IH coils 17L and 17R also changes its direction toward the exhaust window 52A, which is the final exhaust port, advances, passes through the through hole 53A, and is exhausted from the exhaust window 52A.
As a result, the cooling airflows RF3 and RF4 flowing inside the upper case 16 reach the exhaust port 20. Then, it is discharged from the exhaust cover 19 into the room.

Since the exhaust window 52A is installed only at a position distant from the filter circuit board 54, cooking liquid or water overflowing from a pan or the like (hereinafter, referred to as “foreign matter”) is spilled on the exhaust cover 19 during operation. ), the foreign matter can be prevented from passing through the exhaust port 20 and reaching the filter circuit board 54. For this reason, it is possible to prevent the occurrence of electric leakage or failure. As described above, the filter circuit board 54 and the gap GP1 are separated by the partition plate 52 except for the exhaust window 52A. The term “separation” as used herein does not mean a separation that completely blocks the flow of air, but a separation that can prevent the entry of foreign matter that has been added or dropped from above.

(Basic operation of microwave heating)
Next, in the heating cooker 1 according to the first embodiment, the basic operation of each part when microwave heating is performed will be described.

When the main power switch 97 is turned on, the microwave cooking can be started as it is even if the induction heating cooking is not actually executed in the upper unit 100. However, when the main power switch 97 is once turned off, it is necessary to first turn on the main power switch 97 in order to start the microwave heating cooking.

For safety, the main power switch 97 is automatically reset after a fixed time (for example, 30 minutes) from the last timing when use of any one of microwave heating, oven (heating chamber 113) heating and induction heating is finished. Is released. Alternatively, the main power switch 97 is automatically opened when the temperatures of the top plate 15, the heating chamber 113, etc. all fall below a specified value. Such safety measures are adopted.

Next, when the door 114 is opened, a food item such as food is put into the heating chamber 113, and the door 114 is occupied, when the input operation unit 40 is instructed to start microwave heating cooking, integrated control is performed. The device MC issues a drive command to the microwave heating control unit 130 to start the operation of the third cooling fan 128 and the fourth cooling fan 129.

The microwave heating controller 130 drives the inverter circuit 121A of the magnetron 122 to cause the oscillator 122A to emit microwaves. Note that the microwave referred to here is a radio wave of 2450 MH±50 MHz.

The generated microwave is guided into the antenna case 124 from the waveguide 123. Since the driving motor 126 of the antenna 125 starts operating at the timing when the microwave is oscillated, the microwave introduced into the antenna case 124 is generated by the action of the rotating antenna 125 and the rotating shaft 126A. It can be uniformly propagated inside the heating chamber 113. The operation of this type of antenna and the rotating shaft 126A has been described in detail, for example, in Japanese Patent Nos. 4836965 and 5674914, and thus detailed description thereof will be omitted.

When the third cooling fan 128 is operated, air is sucked into the case A150 from the intake port F152F formed in the bottom plate 101U of the lower case 101, and becomes the cooling air RF5. Then, the cooling air RF5 first cools the inverter circuit board 121 and cools various electric components mounted on the circuit board.

The cooling air RF5 then passes through the communication ports B138B and A138A provided at the upper and lower two places of the case A150, and the cooling air RF5 having passed through the communication port B138B hits the back surface of the temperature sensor 160.

The temperature sensor 160 is installed in the mounting hole of the right partition plate 166A. A minute gap of several mm or less exists between the outer shell case of the temperature sensor 160 and the rim of the mounting hole. The cooling air RF5 passes through this gap and is blown into the inside of the heating chamber 113 from the detection window 161 of the temperature sensor 160.

On the other hand, most of the cooling air RF5 that has cooled the inverter circuit board 121 is guided to the passage 172 from the communication port A138A. In other words, it is guided to the passage 172 formed between the partition plate 171 and the upper case 169 covering the upper part of the heating chamber 113. This passage has an effect of preventing the high heat from being transmitted to the upper unit 100 side even when the upper heater 163A above the heating chamber 113 has a high temperature exceeding 300°C.

When the positions of the communication port A138A to the communication port 173 are viewed in a plan view, the communication port 173 is located at a position diagonally crossing the passage 172. That is, there is a communication port at the farthest position.
For this reason, the entire air in the passage 172 is guided to the communication port 173, and is introduced into the exhaust duct 102 that passes through the communication port 173 and horizontally extends rearward (see FIG. 10 ).

When the cooling air RF5 exits the exhaust duct 102, the cooling air RF5 merges with the cooling air RF6 rising from the lower side and is discharged from the exhaust port 20 into the room.

Next, the flow of the cooling air RF6 by the fourth cooling fan 129 will be described.
When the fourth cooling fan 129 is operated, as shown in FIG. 8, air is sucked into the case A151 from the intake port B152B formed in the bottom plate 101U of the lower case 101 and becomes the cooling air RF6. Then, the cooling air RF6 first cools the heat radiation portion 122H of the magnetron 122, passes through the heat radiation portion 122H, and reaches the inside of the duct 153.

The cooling air RF6 then enters the air gap GP5R adjacent to the right side of the heating chamber 113 from the duct 153, and proceeds to the front side. Then, as shown in FIG. 12, it is introduced into the heating chamber 113 from the inlet 201.

Since the introduction port 201 is located near the opening 113A of the heating chamber 113, a part of the cooling air RF6 reaches the inside of the door 114 and eliminates the fogging of the seal plate 196 on the heating chamber 113 side. ..

The cooling air RF6 introduced into the heating chamber 113 has the purpose of discharging water vapor, smoke, and the like generated from an object to be heated such as food inside the heating chamber 113. Specifically, the cooling air RF6 moves from the front part to the rear part of the heating chamber 113 as shown in FIG. 10, and finally reaches the communication port 174 formed in the rear ceiling part.

The cooling air RF6 is introduced into the exhaust duct 102 that horizontally extends rearward from the communication port 174. Then, when the cooling air RF6 exits the exhaust duct 102, the cooling air RF6 joins so as to be attracted to the upward airflow of the cooling air RF5 and is discharged from the exhaust port 20 into the room.

Even when the cooling air RF5 and the cooling air RF6 have the same initial air volume, the cooling air RF5 has a higher wind speed when being discharged from the duct 102 due to the difference in the route as in the first embodiment. .. Therefore, there is an action of attracting the cooling air RF5 emitted from below.

Since the cooling airs RF5 and RF6 are forcibly discharged from the exhaust duct 102, an exhaust fan may be provided in the middle of the exhaust duct 102. In the first embodiment, since such an exhaust fan is omitted, it can be realized at low cost and is advantageous in considering the arrangement of parts inside the upper unit 100.

(Basic operation of oven cooking)
Next, the basic operation of the oven heating device 140 in the heating cooker 1 according to the first embodiment will be described.

When the main power switch 97 is turned on, the integrated control device MC presumes that some cooking will be started and preliminarily starts it. Therefore, even if the upper unit 100 is not actually performing induction heating cooking or microwave heating cooking, the oven heating cooking can be started as it is. However, when the main power switch 97 is once turned off, it is necessary to first turn on the main power switch 97 in order to start the oven heating cooking.

Next, the door 114 is opened, a food item such as food is put into the heating chamber 113, and then the central operation unit 40M of the input operation unit 40 selects a cooking menu using the heating chamber 113. For example, when cooking fish or meat, the heating time and heating power are set. However, when the automatic baking menu is selected, the heating power is automatically set by the heating chamber control unit 159.

Upon receiving a command signal from the integrated control device MC, the heating chamber control unit 159 controls the presence/absence of energization of the upper heater 163A and the lower heater 163B, the time zone of energization, the energization pattern (intermittent heating), thermal power, and the like.

The temperature sensor TS1 detects the temperature in the heating chamber 113 with an infrared signal and transmits the detected temperature data to the heating chamber control unit 159. The heating chamber control unit 159 controls the energization of both or one of the upper heater 163A and the lower heater 163B by looking at the difference between the target temperature and the detected temperature.

When the control method of the timer cooking is input through the central operation unit 40M, both the upper heater 163A and the lower heater 163B, or either one of them is energized for a set time. That is, the heating chamber control unit 159 does not control the energization based on the detected temperature data of the temperature sensor TS1.

After the door 114 is closed, when the central operation unit 40M of the input operation unit 40 is instructed to start the cooking of the oven (heating chamber 113), the integrated control device MC instructs the microwave heating control unit 130. A drive command is issued and the operation of the third cooling fan 128 and the fourth cooling fan 129 is started. The drive command signal may be directly output from the heating chamber control unit 159 to the third cooling fan 128 and the fourth cooling fan 129.

When the third cooling fan 128 is operated, air is sucked into the case A150 from the intake port F152F formed in the bottom plate 101U of the lower case 101. However, unlike the case of microwave cooking, the inverter circuit board 121 does not generate heat. Therefore, the cooling air RF5 enters the communication port B138B and the communication port A138A, respectively, without cooling the inverter circuit 121 substrate.

Then, the cooling air RF5 that has passed through the communication port A138A is blown into the inside of the heating chamber 113 through the detection window 161 from the gap between the outer shell case of the temperature sensor 160 and the edge of the mounting hole.

On the other hand, the cooling air RF5 passing through the communication port A138A is guided to the passage 172. Then, the upper case 169 is cooled while reaching the communication port 173, and thereafter introduced into the exhaust duct 102 (see FIG. 10 ).

On the other hand, the cooling air RF6 from the fourth cooling fan 129 passes through the heat radiation portion 122 of the magnetron 122 and reaches the inside of the duct 153. However, since the magnetron 122 is not driven, it does not generate heat. Therefore, the cooling air RF6 enters the gap GP5R with almost no temperature rise.

Then, the cooling air RF6 is introduced into the heating chamber 113 from the inlet 201 as shown in FIG. Therefore, the cooling air RF6 reaches the inner portion of the door 114.

An object to be cooked such as food placed in the heating chamber 113 may generate steam, oil smoke, or the like due to radiant heat of the upper heater 163A or the lower heater 163B. Such water vapor, oily smoke, and the like are carried to the communication port 174 by the cooling air RF6 that moves rearward from the front portion of the heating chamber 113 as shown in FIG.

After that, the cooling air RF6 is introduced into the exhaust duct 102 that horizontally extends rearward from the communication port 174. Then, when the cooling air RF6 exits the exhaust duct 102, the cooling air RF6 passes through the exhaust port 20 and is discharged indoors while being attracted by the cooling air RF5 rising upward.

In the first embodiment described above, after turning on the main power switch 97, the integrated control device MC controls the entire state of the heating cooker 1 to a certain stage, and then, temporarily, the left operation unit 40L or the right operation unit 40R. Is operated, the subsequent induction heating control is entrusted to the control device 90. However, the range controlled by the integrated control device MC may be changed with the control device 90.

Similarly, the range controlled by the integrated control device MC may be changed between the heating chamber control unit 159 and the microwave heating control unit 130.

For example, after the selection of any one of the induction heating, microwave heating, and oven (heating chamber) cooking menus, any one of the control device 90, the heating chamber control unit 159, and the microwave heating control unit 130 can be used as the basis. Alternatively, a control operation regarding heating may be performed.

In that case, when a new input is made by the input operation unit 40 (including heating stop), the integrated control device MC once controls, but when no input is made, the control device remains as it is. 90, the heating chamber control unit 159 or the microwave heating control unit 130 may perform cooking.

A specific example will be described below with reference to FIG.
FIG. 25 is a flowchart illustrating the operation of the control device 90 when the fried food cooking (automatic), which is one type of induction heating cooking, is performed in the heating cooker 1.

When “fried food (automatic cooking)” is selected in the cooking menu for induction heating cooking, the temperature of the cooking oil placed in the pan is monitored by the temperature detection circuit 93, and the IH coils 17L and 17R are automatically operated. Firepower is controlled.

When the user selects the control mode of fried food cooking (automatic), the control device 90 sequentially executes a preheating process, a fried food cooking process, and a heating power increasing process, as shown in FIG. Further, on the display screen of the central display unit 30, information indicating necessary information and reference information (for example, estimated time required for preheating) appears in characters or figures. In addition, the fact that the cooking is preferential cooking in which the power is not limited (suppressed) by the power control unit 72 is also displayed.

Therefore, the user can recognize that the electric power is preferentially secured during the cooking of the fried food even if the microwave heating or the oven heating is used.

In the preheating process, when the target oil temperature set by the user is 180° C., the inverter circuit 81R (or 81L) is driven at a predetermined thermal power value (maximum 1500 W) in the preheating process, and the oil temperature rapidly increases. Rises from room temperature (eg 20° C.) to the target temperature T1 of 180° C.

This temperature rise is monitored in real time by the temperature detection circuit 93 described above. Therefore, when the temperature detection circuit 93 detects that the target temperature T1 (first temperature) of 180° C. has been reached, the controller 90 Attempts to maintain the target temperature as it is by adjusting the amount of induction heating, that is, the inverter output. (Based on such temperature detection information, the operation to automatically adjust the high frequency thermal power to approach the target temperature is described below. , "Temperature feedback control").

After that, a display request command is issued to the integrated control device MC, and a voice guide such as "Oil temperature has reached an appropriate temperature. Please insert ingredients" is given to the user via the voice synthesizer 95.

When a user puts ingredients, for example, frozen croquette, into oil, the oil is rapidly cooled by the cold ingredients from the time of the addition, so that the temperature drops sharply as shown in FIG. However, since the temperature detection circuit 93 monitors the movement of such a temperature drop, the temperature of the oil rises again because the thermal power of the inverter circuit 81R (81L) is immediately raised to a predetermined thermal power of 1500 W or 1800 W to drive it. Yes (Temperature feedback control). In this way, at the stage where the target temperature T1 is reached again (immediately (or after a lapse of a predetermined time)), the fried food process shifts to the heating power increasing process.

In the heating-up step, control is performed so that the oil temperature is maintained between 225° C., which is the second temperature T2 higher than the target temperature T1, and 230° C., which is the upper limit temperature (third temperature) T3, which is higher than this. The device 90 controls the inverter circuit 81R (81L).

As shown in FIG. 25, the thermal power value is about 900 W and intermittent driving is performed. The process after the temperature reaches the third temperature T3 is referred to as a "fried food finishing process", and is an important process for finishing the fried food crisply. If fried food is not cooked by applying sufficient heat power in such a heat-up step, the fried food cannot be successfully produced. Since the fried food process is not limited within a predetermined time, when the user presses the input key 44R (or the input key 45L), the fried food cooking is completed.

As shown in FIG. 25, in the control mode of (automatic) fried food cooking, the process from the fried food cooking process to the heating power increasing process is defined as the “execution time period of the priority cooking menu”. Electricity is not reduced by starting the heating source and changing operating conditions. That is, the induction heating control device 90 always keeps track of whether the cooking menu being executed is in the "execution time zone of the priority cooking menu", and if it is in the execution time zone, the fact is indicated. Has a function of notifying the outside.

As is clear from the above description, when a specific control mode is entered, the integrated control device MC does not issue a control signal to the control device 90 each time, and the entire control mode from start to completion It is up to the control of the control device 90.

As is clear from the above description, the heating cooker according to the first embodiment has the following configuration. That is,
An upper unit 100 having an induction heating source 17 for heating an object to be heated and supported by the kitchen furniture 2;
A lower unit 200 attached to the upper unit 100 and having a heating chamber 113 built-in,
A microwave heating device 120 that supplies microwaves to the heating chamber 113 and an oven heating device 140 that heats the heating chamber 113 are arranged in the lower unit 200.
The upper unit 100 includes an integrated control device MC that centrally controls the induction heating source, the microwave heating device 120, and the oven heating device 140.
In the upper unit 100, the induction heating circuits 94L and 94R controlled by the integrated control device MC, a filter circuit board 54 on which a filter circuit for receiving power from the commercial power source 99 is mounted, and the filter circuit board 54 An inverter circuit board 80 on which a (first) inverter circuit 81 that receives electric power is mounted,
The lower unit 200 receives power from the microwave heating control unit 130 of the microwave heating device 120, the heating chamber control unit 159 of the oven heating device 140, and the filter circuit board 54 (second). Arrange the inverter circuit board 121A,
Electric power for each heating source of the control unit 130 of the microwave heating device and the oven heating device 140 is supplied from the filter circuit of the upper unit 100.

Therefore, according to this configuration, since the upper unit 100 and the lower unit 200 are provided with the three types of heating sources, it is possible to perform a compound cooking wider than conventional.
Further, the centralized control by the integrated control device MC allows the inverter circuit boards respectively arranged in the upper unit 100 and the lower unit 200 to cooperate with each other, and the heating power is distributed from the filter circuit of the upper unit to the three heating sources. Moreover, it is possible to provide a heating cooker capable of reducing the recirculation of noise on the commercial power source side.

Furthermore, the heating cooker according to the first embodiment has the following configuration. That is,
An upper unit 100 having an induction heating source 17 for heating an object to be heated and supported by the kitchen furniture 2;
A lower unit 200 attached to the upper unit 100 and having a heating chamber 113 built-in,
A microwave heating device 120 that supplies microwaves to the heating chamber 113 and an oven heating device 140 that heats the heating chamber 113 are arranged in the lower unit 200.
The upper unit 100 is provided with an integrated control device MC that centrally controls the induction heating source 17, the microwave heating device 120, and the oven heating device 140.
In the upper unit 100, an induction heating circuit 94L, 94R controlled by the integrated control device MC, a power supply circuit board 55 that receives electric power from a commercial power supply 99, and an (first) inverter circuit 81 mounted inverter. And a circuit board 80,
In the lower unit 200, a microwave heating controller 130 of the microwave heating device 120, a heating chamber controller 159 of the oven heating device 140, and a (second) inverter circuit board 121 are arranged,
The power supply circuit board 55 is arranged on the downstream side of the cooling air passage (first air passage F1) of the cooling fan 60 that cools the (first) inverter circuit 81,
The control unit 130 of the microwave heating device and the oven heating device 140 are configured to supply respective heating source power from the filter circuit board 54 of the upper unit 100.

Therefore, according to this configuration, since the upper unit 100 and the lower unit 200 are provided with the three types of heating sources, it is possible to perform a compound cooking wider than conventional.
In addition, the central control by the integrated control device MC allows the inverter circuit boards 80 and 121 respectively arranged in the upper unit 100 and the lower unit 200 to cooperate with each other.
Further, the filter circuit board 54 is branched to distribute the heating power to the three heating sources, and the filter circuit board 54 is provided on the downstream side of the cooling air passage (first air passage F1) of the first cooling fan 60. Is disposed, it is possible to prevent overheating of the filter circuit board 54.

Furthermore, the heating cooker according to the first embodiment has the following configuration. That is,
An upper unit 100 having an induction heating source 17 for heating an object to be heated and supported by the kitchen furniture 2;
A lower unit 200 attached to the upper unit 100 and having a heating chamber 113 built-in,
A microwave heating device 120 that supplies microwaves to the heating chamber 113 and an oven heating device 140 that heats the heating chamber 113 are arranged in the lower unit 200.
The upper unit 100 is provided with an integrated control device MC that centrally controls the induction heating source 17, the microwave heating device 120, and the oven heating device 140.
In the upper unit 100, an induction heating circuit 94L, 94R controlled by the integrated control device MC, a power supply circuit board 55 that receives electric power from a commercial power supply 99, and an (first) inverter circuit 81 mounted inverter. And a circuit board 80,
In the lower unit 200, a microwave heating controller 130 of the microwave heating device 120, a heating chamber controller 159 of the oven heating device 140, and a (second) inverter circuit board 121 are arranged,
The power supply circuit board 55 is arranged on the downstream side of the cooling air passage (first air passage F1) of the cooling fan 60 that cools the (first) inverter circuit 81,
The control unit 130 of the microwave heating device and the oven heating device 140 are respectively controlled from a power supply circuit board 55 provided on the downstream side (non-commercial power supply side) of the filter circuit board 54 of the upper unit 100. This is a configuration for supplying low-voltage power.

Therefore, according to this configuration, since the upper unit 100 and the lower unit 200 are provided with the three types of heating sources, it is possible to perform a compound cooking wider than conventional.
In addition, the central control by the integrated control device MC allows the inverter circuit boards 80 and 121 respectively arranged in the upper unit 100 and the lower unit 200 to cooperate with each other.
Further, the power supply circuit board 55 is configured to distribute electric power of a specified low voltage to the control devices 90, 130, 159 of the three heating sources, and the cooling air passage of the first cooling fan 60 (first air passage). Since the power supply circuit board 55 is arranged on the downstream side of F1), it is possible to prevent the power supply circuit board 55 from overheating and supply stable power to the control device 90 and the like.

Summary of the first embodiment.
As is apparent from the above description, the heating cooker 1 according to the first embodiment has the configuration of the first invention.
That is, the heating cooker 1 according to the first embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body, IH coils 17L and 17R for heating an object to be heated on the top plate 15, an inverter circuit board 80 arranged below the coils 17L and 17R, and the IH coils 17L and 17R. A cover 70 installed between the inverter circuit board 80 and a first cooling fan 60 for introducing cooling air from the outside of the main body,
The first cooling fan 60 has rotating blades that rotate about a vertical axis, and faces the inlet of the first air passage F1 formed between the inverter circuit board 80 and the cover 70. ,
The first cooling fan 60 supplies the first cooling air RF1 from an inlet FI at one end of the first air passage F1 toward an outlet FO at the other end of the first air passage F1. is there.

With this configuration, the IH coil installation space CK and the installation space for the inverter circuit board 80 are vertically divided by the cover 70, and the inverter circuit board 80 can be effectively cooled.

The heating cooker 1 according to the first embodiment has the configuration of the second invention.
That is, the heating cooker 1 according to the first embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body, a left-side IH coil 17L and a right-side IH coil 17R, which are respectively arranged at two positions on the left and right, for heating an object to be heated on the top plate 15, are common to these two IH coils. Yes, and an inverter circuit board 80 arranged below the IH coils, a cover 70 installed between the two IH coils and the inverter circuit board 80, and installed near the left side wall surface of the main body, A first cooling fan 60 for introducing cooling air from a ventilation hole formed in the housing,
The cover 70 is installed in series from the first cooling fan 60 to a right side of the left side of the IH coil 17L.
The first cooling fan 60 has rotating blades that rotate about a vertical axis, and faces the inlet FI of the first air passage F1 formed between the inverter circuit board 80 and the cover 70. ,
The first cooling fan 60 supplies the first cooling air FR1 from the inlet FI at the left end of the first air passage F1 toward the outlet FO at the right end thereof.
An exhaust window 52A into which the first cooling air FR1 exiting from the first air passage F1 is introduced after passing through the space above the cover 70 is provided at the inner rear portion of the main body 10,
The formation position of the exhaust window 52A is on the left side of the position of the outlet FO of the first air passage F1.

With this configuration, the IH coil installation space CK and the installation space for the inverter circuit board 80 are vertically divided by the cover 70, and the inverter circuit board 80 can be effectively cooled. Moreover, the cooling air RF1 flowing out of the air passage F1 flows in a straight line from the left side to the right side, advances to the space above the cover 70 before reaching right below the IH coil 17R on the right side, and the right IH on the upper side. The coil 17R is cooled and proceeds to the exhaust window 52A provided at a position far from this position.
Therefore, the left and right IH coils 17L, 17 can be cooled without guiding the cooling air with a special guide plate or the like.

The heating cooker 1 according to the first embodiment has the configuration of the third invention.
That is, the heating cooker 1 according to the first embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body, IH coils 17L and 17R for heating an object to be heated on the top plate 15, an inverter circuit board 80 arranged below the IH coils 17L and 17R, and the IH coils 17L and 17R. Cover 70 installed between the main body 10 and the inverter circuit board 80, a first cooling fan 60 and a second cooling fan 61 for introducing cooling air from the outside of the main body 10, and a user operation input. And an input operation unit 40 for receiving,
The first cooling fan 60 has rotating blades that rotate about a vertical axis,
The first cooling fan 60 faces an inlet FI of a first air passage F1 formed between the inverter circuit board 80 and the cover 70, and the first cooling fan 60 is the first air passage. The configuration is such that the first cooling air FR1 is supplied from the inlet FI at one end of F1 toward the outlet FO at the other end,
The second cooling fan 61 is located closer to the input operation unit 40 than the first cooling fan 60 and is configured to supply the second cooling air FR2 to the input operation unit 40.

With this configuration, the inverter circuit board 80 below the IH coil installation space CK can be effectively cooled by the first cooling fan 60. Further, the input operation unit 40 can also be cooled by the second cooling fan 61.

The heating cooker 1 according to the first embodiment has the configuration of the fourth invention.
That is, the heating cooker 1 according to the first embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body 10, an IH coil for heating an object to be heated on the top plate 15, an inverter circuit board 80 arranged below the IH coil, and a space between the IH coil and the inverter circuit board. A cover 70 installed in the main body, a first cooling fan that introduces cooling air from the outside of the main body, and a power supply circuit board 55 that receives power from a commercial power supply to generate a necessary power supply,
The first cooling fan 60 has rotating blades that rotate about a vertical axis,
The first cooling fan 60 faces an inlet of a first air passage F1 formed between the inverter circuit board 80 and the cover 70, and the first cooling fan 60 has the first air passage F1. The first cooling air FR1 is supplied from the inlet at one end to the outlet at the other end,
The power supply circuit board 55 is arranged on the opposite side of the first cooling fan 60 with the cover 70 interposed therebetween.

With this configuration, the inverter circuit board 80 below the IH coil installation space CK can be effectively cooled by the cooling air RF1 from the first cooling fan 60. Further, the cooling air RF1 that has cooled the inverter circuit board 80 reaches the power supply circuit board 55 in the traveling direction thereof, so that the electric components 85 mounted on the power supply circuit board 55 can be cooled.

The heating cooker 1 according to the first embodiment has the configuration of the fifth invention.
That is, the heating cooker 1 according to the first embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body, an IH coil for heating an object to be heated on the top plate, an inverter circuit board 80 arranged below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board. And a first cooling fan 60 for introducing cooling air from the outside of the main body,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan has an intake port on a lower surface of a fan case, and has an outlet on a side surface for blowing cooling air,
A first air passage F1 formed below the cover 70 on a first horizontal plane HP1 that crosses the vertical center of the air outlet, a heat sink 82 arranged on the upper surface of the inverter circuit board 80, and the heat sink. And a power control switching element 93 attached to 82, respectively,
An exhaust window 52A for exhausting air after passing through the IH carps 17L and 17R is arranged on the second horizontal plane HP2 above the first horizontal plane HP1.

With this configuration, the heat sink 82 of the inverter circuit board 80 can be effectively cooled by the cooling air RF1 flowing horizontally from the first cooling fan 60. Further, the cooling air RF1 that has cooled the inverter circuit board 80 travels upward, reaches the IH coils 17L and 17R, and reaches the exhaust window 52A in the horizontal direction, so that the IH coils 17L and 17R can also be cooled.

The heating cooker 1 according to the first embodiment has the configuration of the sixth invention.
That is, the built-in composite heating cooker 1 according to the first embodiment is
Which is installed in kitchen furniture,
An upper unit 100 having a first heating source 17 for heating the object to be heated via a top plate 15 on which the object to be heated is placed, and being supported by the kitchen furniture 2.
A lower unit 200 installed below the upper unit 100 and having a heating chamber 113 whose front opening is opened and closed by a door 114.
The lower unit 200 includes a microwave heating device 120 for supplying microwaves to the heating chamber 113, an oven heating device 140 for heating the heating chamber, and a cooling fan 128 for cooling the microwave heating device. 129 and
The microwave generation source 122 of the microwave heating device 120 is disposed along any one of the left and right side wall surfaces of the heating chamber 113, and the oscillating portion 122A of the microwave generation source 122 has a rear surface of the heating chamber 113. It is installed sideways so that it projects to the side,
On the back side of the heating chamber 113, a power supply port 180 communicating with the inside of the heating chamber 113 and an antenna case 124 into which the microwave from the microwave generation source 122 is introduced are provided.
In the antenna case 124, a rotatable antenna 125 is arranged for propagating the microwave oscillated from the microwave generation source 122 to the space in the heating chamber 113 via the power supply port 180. It is a configuration.

Due to this configuration, the magnetron 122 and the antenna case 124 of the microwave heating device 120 can be installed in a space from one side wall surface (right side surface) of the heating chamber 113 to the back side in a series, and a narrow internal space. These devices can be incorporated in the lower unit 200 of the above.

The heating cooker 1 according to the first embodiment has the configuration of the seventh invention.
That is, the built-in composite heating cooker 1 according to the first embodiment is
Which is installed in the kitchen furniture 2,
An upper unit 100 having an induction heating source 17 for heating the object to be heated via a top plate 15 on which the object to be heated is placed, and being supported by the kitchen furniture 2.
A lower unit 200 installed below the upper unit 100 and having a heating chamber 113 whose front opening is opened and closed by a door 114.
The lower unit 200 is supplied with electric power from the upper unit 100 and supplies a microwave to the heating chamber 113, a microwave heating device 120 for heating the heating chamber 113, and an oven heating device 140 for heating the heating chamber 113. Cooling fans 128 and 129 for cooling the wave heating device 120,
The microwave generation source 122 of the microwave heating device 120 is arranged along one right side wall surface or one left side wall surface of the heating chamber 113, and the oscillating portion 122A of the microwave generation source 122 is on the back side of the heating chamber 113. It is installed sideways so that it projects to
An antenna case 124 into which the microwave from the microwave generation source 122 is introduced is provided on the back side of the heating chamber 113,
In the antenna case 124, microwaves oscillated from the microwave generation source 122 are propagated to a space inside the heating chamber 113 through a power supply port 180 provided on the back surface of the heating chamber 113. Arrange the rotated antenna 125,
The operations of the induction heating source 17, the microwave heating device 120, the oven heating device 140, and the cooling fans 128 and 129 are controlled by an integrated control device MC on the upper unit 100 side. Is.

Due to this configuration, the microwave oscillator (magnetron 122) of the microwave heating device 120 and the antenna case 124 are installed in a series in a space from one side wall surface (right side surface) of the heating chamber 113 to the back surface side. Therefore, these devices can be built in the lower unit 200 having a narrow internal space.

Furthermore, the integrated control device MC that controls the induction heating source 17 also centrally controls the microwave heating device 120, the oven heating device 140, the third cooling fan 128, and the fourth cooling fan 129. It is possible to provide the built-in composite heating cooker 1 in which the cooperation of the heating sources is surely executed.

The heating cooker 1 of the first embodiment has the configuration of the eighth invention.
That is, the built-in composite heating cooker 1 according to the first embodiment is
Which is installed in the kitchen furniture 2,
An upper unit 100 having an induction heating source 17 for heating the object to be heated via a top plate 15 on which the object to be heated is placed, and being supported by the kitchen furniture 2.
A lower unit 200 installed below the upper unit 100 and having a heating chamber 113 whose front opening is opened and closed by a door 114.
The lower unit 200 includes a microwave heating device 120 that receives electric power from the upper unit 100 and supplies microwaves to the heating chamber 113, and an oven heating device 140 that heats the heating chamber 113. ,
The microwave heating device 120 includes a microwave heating control unit 130, a microwave generation source 122, and a first inverter circuit board 121 that supplies high-frequency power to the microwave generation source 122.
The oven heating device 140 includes a heating chamber control unit 159,
The microwave generation source 122 and the first inverter circuit board 121 are arranged along one side wall surface of the heating chamber 113 and apart from each other in the front-rear direction,
Below the first inverter circuit board 121 and below the heat dissipation part 122H of the microwave generation source 122, air is sucked from the outside of the lower unit 200, and the air is sucked into the first inverter circuit. A front side cooling fan 128 and a rear side cooling fan 129, which are individually supplied to the substrate 121 and the heat dissipation portion 122H, are arranged.

Due to this configuration, the microwave oscillator (magnetron 122) of the microwave heating device 120 and the inverter circuit board 121 are built in the lower unit 200 in a narrow inner space on one side wall surface (right side surface) of the heating chamber 113. Can be made

Further, since the front side (third) cooling fan 128 and the rear side (fourth) cooling fan 129 for individually cooling the heat dissipation portion 122H and the inverter circuit board 121 are respectively arranged, It is possible to prevent the microwave heating device 120 from overheating.

The heating cooker 1 according to the first embodiment has the configuration of the tenth invention.
That is, the built-in composite heating cooker 1 according to the first embodiment is
A first heating source 17 for heating the object to be heated through a top plate 15 on which the object to be heated is placed; and a flat main body 10 whose top opening is closed by the top plate 15. And an upper unit 100 supported by kitchen furniture,
A heating chamber 113 to which microwaves are supplied, and a lower unit 200 having a microwave generation source 122 built in the lower case 101 are provided.
The upper case 16 forming the outer shell of the main body 10 and the lower case 101 are each formed of a thin metal plate,
Side walls 16L and 16R extending in the vertical direction are formed at the peripheral edge of the upper case 16.
The entire lower surface of the lower case 101 is open, and the upper unit 100 and the lower unit 200 are connected to each other with the upper case 16 fitted inside the opening.

Due to this configuration, the upper case 101 and the lower case 101 are strengthened as an integrated structure by the two means of fitting and joining. Therefore, even if a thin metal plate is used as a light structure, it is possible to maintain a highly reliable casing structure that can withstand long-term use. The "fitting" referred to in the first embodiment means that the outer dimension of the upper case 16 inserted inside may differ from the inner dimension of the lower case 101 on the outer side by about several mm. It does not have to be in close contact as a whole. Further, in the case where there is almost no dimensional difference as described above, there is a concern that it becomes difficult to insert the upper case 16 into the upper surface opening of the lower case 101 during assembly.

The heating cooker 1 according to the first embodiment has the configuration of the eleventh invention.
That is, the built-in composite heating cooker 1 according to the first embodiment is
A top plate 15 on which an object to be heated is placed, an induction heating source 17 for heating the object to be heated through the top plate 15, and a flat upper case in which an opening on the upper surface is closed by the top plate 15. 16, and an upper unit 100 that is supported by the kitchen furniture 2;
A heating chamber 113 to which microwaves are supplied; and a lower unit 200 having a microwave heating device 120 built in a lower case 101,
In a state where the upper case 16 is placed on the lower case 101, the bottom wall of the upper case 16 also serves as the ceiling surface of the lower case 101.

With this configuration, a dedicated partition plate for covering the ceiling of the lower case 101 and a structure such as a lid plate are not required, the manufacturing cost can be significantly reduced, and the weight can be reduced.
Further, immediately below the upper case 101, a cavity 104 that is large in plan view and has a large depth dimension BH is formed behind the heating chamber 113. Therefore, the waveguide 123 and the power supply circuit board are provided in this cavity. 127 (including the circuit board of the microwave heating controller 130 and the heating chamber controller 159) can be accommodated.

Further, as shown in FIG. 7, when the cavity 104 is located directly below the filter substrate circuit 54, the cavity 104 cannot be used when the external commercial AC power source 99 is pulled into the heating cooker 1 by the power cord. It is convenient.

(Other characteristic points)
In the configuration of the first embodiment, various practical effects and merits can be expected as follows.
(1) When the case A150 and the case B151 forming the microwave heating device 120 are aligned in the front-rear direction as shown in FIG. 7 and are adjacent to each other so as to be in contact with each other, two independent cooling winds RF5 , The structure for guiding the RF6 can be realized easily and compactly.
(2) A structure that guides two independent cooling airs RF5 and RF6 when the third cooling fan 128 and the fourth cooling fan 129 are arranged in a straight line in the front-rear direction as shown in FIG. Can be realized easily and compactly.
(3) Important components such as the case A150 and the case B151, the magnetron 122, the latch switch 132A of the closing detection unit 139 of the door 114, and the door switch 132B that configure the microwave heating device 120 are provided on the right side of the heating chamber 113. Since they are integrated, it is convenient that these parts can be inspected or repaired only on the right side of the lower case 101. For example, if the lateral vertical wall 101R forming the right outer shell of the lower case 101 is removed, the whole of each of the above components is exposed, and workability such as maintenance and inspection can be easily performed.

Embodiment 2.
26 to 54 show a heating cooker according to the second embodiment. The second embodiment is characterized in that the strength of the heating cooker 1 is increased by devising the connection structure of the upper unit 100 and the lower unit 200. Note that the same or corresponding portions as those in FIGS. 1 to 25 are denoted by the same reference numerals, and overlapping description may be omitted.

FIG. 26 is a built-in induction heating cooker according to the second embodiment of the present invention, and is a perspective view of a state before installation on kitchen furniture. FIG. 27 is a perspective view showing a state in which the door is opened in the induction heating cooker shown in FIG. 26. 28 is a front view of the induction heating cooker shown in FIG. 26. FIG. 29 is a plan view of the induction heating cooker shown in FIG. 26. FIG. 30 is a right side view of the induction heating cooker shown in FIG. 26.

31 is a left side view of the induction heating cooker shown in FIG. 26. FIG. 32 is a rear (rear) view of the induction heating cooker shown in FIG. 26. FIG. 33 is a bottom view (bottom surface) of the induction heating cooker shown in FIG. 26. 34 is a vertical cross-sectional view taken along line ZZ of the induction heating cooker shown in FIG. 29. FIG. 35 is a vertical sectional view taken along line YY of the induction heating cooker shown in FIG. 29. FIG. 36 is a vertical sectional view taken along line YY of the induction heating cooker shown in FIG. 29, showing a state in which the door is opened. FIG. 37 is a vertical cross-sectional view taken along line X-X of the induction heating cooker shown in FIG. 29. FIG. 38 is a perspective view showing the entire upper unit of the induction heating cooker shown in FIG. FIG. 39 is a perspective view of the upper unit of the induction heating cooker shown in FIG. 26 with the top plate removed.

FIG. 40 is a perspective view of the upper unit of the induction heating cooker shown in FIG. 26 with the top plate and IH coil removed. 41 is a perspective view of the upper unit of the induction heating cooker shown in FIG. 26 with the top plate, IH coil and cover removed. FIG. 42 is a reference perspective view showing the flow of cooling air in FIG. 41. 43 is a plan view, a front view, a right side view and a rear view of the upper unit in the induction heating cooker shown in FIG. FIG. 44 is a plan view, a front view, a right side view and a rear view of the upper unit shown in FIG. 26, in which both the top plate and the IH coil are removed. FIG. 45 is a plan view, a front view, a right side view and a rear view of the upper unit shown in FIG. 26 with the top plate, the IH coil and the cover removed. FIG. 46 is a bottom (bottom) view of the upper unit of the induction heating cooker shown in FIG. 26. 47 is a vertical cross-sectional view taken along line XX of the upper unit shown in FIG. 43. 48 is a vertical cross-sectional view taken along line XX of the upper unit shown in FIG. 43. 49 is a vertical cross-sectional view taken along line ZZ of the upper unit shown in FIG. 43.

50 is a perspective view 1 showing an exploded state of the induction heating cooker shown in FIG. 26. FIG. 51 is a perspective view 2 showing an exploded state of the induction heating cooker shown in FIG. 26. 52 is a perspective view of a connecting member (reinforcing member) of the induction heating cooker shown in FIG. FIG. 53 is a perspective view showing an intermediate stage of disassembling the lower unit of the induction heating cooker shown in FIG. FIG. 54 is a transverse cross-sectional view for explaining the main parts of the lower unit of the induction heating cooker shown in FIG. 26.

A description will be given with reference to each drawing, focusing on the points that are particularly different from the first embodiment.
In FIG. 26, reference numeral 118 is a connecting member for integrating the upper unit 100 and the lower unit 200, and may also be referred to as a “reinforcing member” because it has the purpose of reinforcement.

The connecting member 118 has a shape shown in FIG. 52 so as to cover the right side surface, the lower surface, and the left side surface of the lower unit 200 in series. That is, 118R is a right vertical portion that closely overlaps the right side surface of the front portion of the lower unit 200, 118L is a left vertical portion that closely overlaps the left side surface of the front portion of the lower unit 200, and 118M is the right vertical portion. It is a central flat portion formed in series on the portion 118R and the left vertical portion 118L. The central flat portion 118M is a portion that overlaps the lower surface of the bottom plate 101U at the front portion of the lower case 101 in a close contact state.

The connecting member 118 is formed by pressing one metal thin plate (for example, a plate thickness of 1 mm) to integrally form the right vertical portion 118R, the central flat portion 118M, and the right vertical portion 118L.

Reference numeral 118P denotes a concave portion or a convex portion integrally formed by a press working die when the connecting member 118 is pressed. As shown in FIG. 52, the left vertical portion 118L, the right vertical portion 118R, and the central flat portion 118M have three rows. Are formed one by one. This concave portion or convex portion 118P is formed for the purpose of increasing the mechanical strength of the connecting member 118.

In FIG. 27, 116 is a metal arm that supports the door 114 in a horizontal state and pulls in the door closing direction when closing the door 114. The arm 116 is guided by a through hole (guide hole) 117 formed in the front plate 101F of the lower case 101 and moves through the through hole 117 in the front-rear direction. Note that the door structure of the high-frequency heating device using the arm 116 is introduced in, for example, JP-A-2002-39541, JP-A-2010-181106, JP-A-2007-218544, and the like, so detailed description will be made. Is omitted.

In FIG. 27, reference numeral 176 is a hinge provided in a pair on the left and right, and rotatably supports the door 114 of the lower case 101. Therefore, the door 114 opens and closes with the hinge 176 as a fulcrum. The pair of left and right arms 116 are supported from below by a roller (not shown) or a sliding member (not shown) rotatably provided on the lower side of the back side of the through hole 117 to open and close the door 114. At times, the arm 116 moves back and forth while contacting the upper surface of the roller or sliding member.

Reference numerals 112 denote front covers provided on the left and right sides of the front surface of the lower unit 200, and extend to the left and right more than the lateral width of the lower case 101. When the heating cooker 1 is installed in the kitchen furniture 2, the front cover 112 plays a role of filling a gap with the kitchen furniture 2 as much as possible.

Reference numeral 198 denotes a metal support fitting, which has a length extending over the entire width of the lower case 101, as shown in FIG. Reference numeral 198H is a horizontal portion that overlaps the upper shielding plate 197 so as to be in close contact therewith, and 198V is a vertical portion formed by bending the rear end portion of the horizontal portion 198H in the vertical direction. The support fitting 198 is thus composed of the horizontal portion 198H and the vertical portion 198V.

Reference numeral 198R is a fixed portion formed by bending the right end portion of the horizontal portion 198H of the support fitting 198 downward. As shown in FIG. 31, the support fitting 198 has a fixing portion 198L formed by bending the left end of the horizontal portion 198H downward. These two fixing portions 198L and 198R are in close contact with the upper edge of the connecting member 118 so as to hold the upper edge from the outside. The connecting member 118 is fixed to the front horizontal wall 101T of the lower case 101 at a total of four places by screws 186.

In FIG. 27, 101RP is a convex portion integrally formed on the lateral vertical wall 101R of the lower case 101. The convex portion is formed by pressing the lateral vertical wall 101R from the inside to the outside of the lower case 101, and is intended to increase the mechanical strength of the lateral vertical wall 101R. Similarly, the lateral vertical wall 101L of the lower case 101 also has a convex area protruding outward to form a convex portion 101LP (see FIG. 31).

In FIG. 29, L1 indicates the lateral width dimension of the terminal end portion 102E of the exhaust duct 102. LW indicates the lateral width dimension of the space below the exhaust cover 19 which is highly breathable. Since the bottom of the exhaust cover 19 is closed by the bottom plate 65 as shown in FIG. 34, even if foreign matter such as water enters from the top of the exhaust cover 19, it is blocked by the bottom plate 65. ..

In FIG. 29, D4 is the effective width of the top plate 15 in the front-rear direction. The “effective width” refers to a dimension excluding the dimension of the outer peripheral edge covered with the decorative frame 25 surrounding the top plate 15. The effective width D4 of the top plate 15 in the front-rear direction is 413 mm.

FIG. 29 shows an example in which the lateral width of the top plate 15 is set to 600 mm, and the actual dimensions of each part are as follows.
D5 is the maximum width of the cooking device 1 in the front-rear direction, which is 510 mm.
W2 is an effective width of the top plate 15 in the left-right direction and is 580 mm.
W3 is the maximum width in the left-right direction of the heating cooker 1 and is 599 mm. The left-right maximum width of the upper unit and the left-right maximum width of the lower unit 200 including the front cover 112 are the same. Incidentally, the maximum width of the exhaust cover 19 in the left-right direction is 595 mm.

The size of the top plate 15 described above is an example, and the present invention is not limited to this example.
For example, the maximum width W3 may be changed to 650 mm, the effective width W2 may be changed to 639 mm, the maximum width D5 in the front-rear direction may be changed to 507 mm, and the effective width D4 in the front-rear direction may be changed to 425 mm.

30, 187 is a screw for fixing the connecting member 118 to the lateral vertical walls 101L and 101R of the lower case 101, and 16P is formed on the lateral vertical walls 16L and 16R and the rear vertical wall 16B of the upper case 16. Claws (see FIGS. 32, 43, and 45). Similarly, 148 is a screw (fixing tool) for fixing the connecting member 118 to the lateral vertical walls 101L and 101R of the lower case 101. Reference numeral 183 denotes a screw for fixing the side vertical walls 16L and 16R of the upper case 16 and the rear vertical wall 16B, and the tip of the screw is fixed to a screw hole (not shown) formed in the wall of the lower case 101. To be done.

The portion of the claw 16P formed on the most front side is fixed by the screw 187 while being engaged with the rim of a square or rectangular through hole (engagement hole) 118N formed in the connecting member 118.

The claws 16P formed at the intermediate position and the rear side are engaged with the rims of the rectangular or rectangular through holes (engagement holes) 101N formed in the lateral vertical wall 101R of the lower case 101, and in the state as they are, It is fixed by a screw 183. The rear plate 101B of the lower case 101 is also formed with the through hole 101N, and the claw 16P formed on the rear vertical wall 16B of the upper case 16 is engaged with the through hole 101N.

In FIGS. 30 and 31, 103 is a step portion integrally formed on the upper end portion of the lateral vertical wall 101R. The side vertical wall 16R of the upper case 16 overlaps this step. As a result, the upper case 16 is reliably prevented from moving to the right. That is, when the upper case 16 is inserted from above the lower case 101, the step 103 and the lateral vertical wall 101R are fitted together.

Reference numeral 179 denotes a fixing metal fitting, and in the rear part of the upper unit 100, an intermediate part is fixed to a support base 179B (see FIG. 53) so that the rear end part swings up and down. At the stage where the heating cooker 1 is installed in the installation opening 2A of the kitchen furniture 2, by closing the "exclusive screw" housed in the support 179B, the rear end portion of the fixing metal fitting 179 is lifted up and installed. Engage under the mouth 2A. Thereby, the heating cooker 1 is fixed so as not to be lifted. When the "exclusive screw" h and the exhaust cover 19 are removed, the inside of the upper case 16 can be visually confirmed, so that the installer can easily perform such work.

In FIG. 32, 101B is a metal-made back plate that constitutes the back surface of the lower case 101. Reference numeral 101K is a bent portion formed by bending the back plate 101B at the time of press working, and the lower portion thereof is the inclined portion 101C (inclined portion 111 of the main body 110).

In FIG. 33, DP2 indicates the dimension from the lateral vertical wall 16L of the upper case 16 to the lateral vertical wall 101L of the lower case 101. As is apparent from FIG. 33, the side vertical wall 101L is located on the right side of the center of the vent hole 64 of the upper case 16 while avoiding the center point. It should be noted that in the figure, the broken line 101L is a lateral vertical wall and indicates that the portion facing the upper surface of the connecting member 118 also extends in the front-rear direction.

In FIG. 33, reference numeral 131 denotes a door open/close detection mechanism, which is a mechanism including the closing detection unit 139 described in the first embodiment. The door opening/closing detection mechanism 131 is configured by mounting a latch switch 132A, a door switch 132B, and the like on the support plate 137. The door open/close detection mechanism 131 is installed in the space between the case A150 and the front plate 101F of the lower case in the lower case 101. The support plate 137 is fixed to both the front plate 101F and the bottom plate 101U with screws.

In FIGS. 35 and 36, reference numeral 145 denotes a dedicated tray used inside the heating chamber 113, which is made of plastic, porcelain, glass or the like having high heat resistance. The tray 145 has an outer dimension that allows it to be taken in and out through the opening 113A of the heating chamber 113.

Reference numeral 147 is a tableware made of a porcelain placed on the tray 145 or a material having high heat resistance. Reference numeral 101P is a reinforcing convex portion integrally formed on the wall surface of the heating chamber 113 by press working.
The tableware 147 may be made of metal when microwave heating is not used. For example, the induction heating source 17 is used to bake food (eg, hamburger) on a frying pan (not shown) to some extent, and then the frying pan is moved into the heating chamber 113, by the upper heater 163A and the lower heater 163B. It may be cooked by heating (this is a type of cooperative cooking).

LA is a "projection size" from the rear wall (rear wall surface) 113B of the heating chamber 113 to the end of the antenna driving motor 126. Reference numeral 154 denotes a case C formed of an electrically insulating material, which has a “box shape” that is long in the left-right direction and thin in the front-rear direction as shown in FIG.

A power circuit board 127 of the microwave heating controller 130 is housed in the case C154. A control circuit board (not shown) of the heating chamber controller 159 may be stored.

As shown in FIG. 35, a slight gap GP11 is secured between the rear end of the antenna driving motor 126 and the case C154. In addition, in FIG. 35 and FIG. 36, the outer shell of the case C is shown by the broken line.

A sheet or plate-shaped heat insulating material 175A (not shown) is arranged in the gap GP6. Similarly, a sheet- or plate-shaped heat insulating material 175B (not shown) is arranged in the gap GP8.

FIG. 39 shows a state in which the top plate 15 is removed. In FIG. 39, 30 W is a display window, which is formed on the operation board 41 at a position corresponding to the central display section 30.

31LW and 31RW are display windows, respectively. The display windows are formed on the operation board 41 at positions corresponding to the left display portion 31L and the right display portion 31R, respectively.

Reference numeral 56 denotes a choke coil, which is one of important electric components in the filter circuit board 54. 17C is a coil base (coil support frame), and has two IH coils 17L and 17R mounted on the upper surface.

The coil base 17C is integrally formed of a plastic material having high heat resistance. The coil base 17C has a circular shape as a whole according to the shapes of the IH coils 17L and 17R, but has a plurality of arms 17CH extending radially from the center. In the second embodiment, there are eight arms 17CH. A space that serves as a large ventilation space is formed between the arms 17CH.

17F is a ferrite plate installed between two adjacent arms 17CH. In the left IH coil 17L, TS3 is a contact type temperature sensor such as a thermistor.
One temperature sensor TS3 is installed at the center of the IH coil 17L. The other two temperature sensors TS3 are installed at positions outside the center of the IH coil 17L, slightly apart from the center.

The TS5 is a non-contact type temperature sensor such as an infrared sensor. In the right IH coil 17R, TS4 is a contact type temperature sensor such as a thermistor. One temperature sensor TS4 is installed at the center of the IH coil 17R. The other two temperature sensors TS4 are installed at positions outside of the center of the IH coil 17R, a little apart from each other.

The TS6 is a non-contact temperature sensor such as an infrared sensor. The measurement data from each of the temperature sensors TS3 to TS6 is input to the temperature detection circuit 93.

In FIG. 39, 66 is a magnetic shield ring made of metal such as aluminum, and is fixed to the coil base 17C so as to surround the coil base (coil support frame).

In FIG. 40, reference numeral 57 is a transformer, which is one of important electric components in the power supply circuit board 55. In FIG. 40, the left end portion of the cover 70 is cut out within the range of the width W11. The temperature sensor TS5 supported by the coil base 17C on the IH coil 17L side is arranged in the notched portion. That is, the temperature sensor TS5 and the cover 70 are notched so as not to contact each other.

In FIG. 41, reference numeral 58 is a capacitor, which is one of important electric components in the inverter circuit board 80.
As is clear from FIG. 41, the number of aluminum heat sinks 82 is two on the left and right (two rows) and two on the front and back, so there are a total of four. The four heat sinks 82 are installed so that two heat sinks are close to each other and face each other. Reference numeral 59 is a diode bridge circuit (diode module) attached to one heat sink 82. The heat generated during operation of the diode bridge circuit (diode module) 59 is dissipated by the heat sink 82 and is not overheated.

As is clear from FIG. 41, the air outlet 60A of the first cooling fan 60 and the heat sink 82 are separated by a distance LD of about 50 to 100 mm.
FIG. 46 is a bottom (bottom) view of the upper unit 100. D6 is the maximum width dimension in the front-rear direction of the upper unit 100, which is 432 mm.

46 and 47, W4 is the maximum width dimension of the upper unit 100 in the left-right direction, which is 544 mm.
In FIG. 49, D4 is the effective width of the top plate 15 in the front-rear direction. Here, the effective width D4 in the front-rear direction is 413 mm.

In FIG. 50, reference numeral 70 denotes a cover formed by pressing from a thin metal plate, and a large convex portion 70P is formed by pressing at the central portion to increase strength. 118TL is a support side that is a horizontal plane. The support piece 118L is formed by horizontally bending the left vertical portion 118L of the connecting member (reinforcing member) 118.

118TR is a support piece which is a horizontal surface. The support piece 118R is formed by horizontally bending the right vertical portion 118R of the connecting member (reinforcing member) 118.
The support piece 118R approaches or abuts the lower surface of the flange 16A of the upper unit 100 when the upper unit 100 and the lower unit 200 are coupled (see FIG. 54). Therefore, the load received by the top plate 15 and the like of the upper unit 100 from above can be received by the support piece 118R of the connecting member 118.

Also, the left support piece 118L also approaches or abuts the lower surface of the flange 16A of the upper unit 100 when the upper unit 100 and the lower unit 200 are coupled. Therefore, the upper unit 100 is configured to be firmly supported from below by the lower unit 200.

In FIG. 51, 101M is a notch formed large in the front part of the lateral vertical wall 101L of the lower case 101. W5 is an opening width (lateral width dimension) of the cutout portion 101M, which is about 50 mm to 80 mm. However, the opening width W5 is large enough to inspect and repair the door opening/closing detection mechanism 131. For example, the supporting plate 137 is sized so that it can be removed and taken out.

The width of the right vertical portion 118R of the connecting member (reinforcing member) 118 in the front-rear direction is larger than the opening width (lateral width dimension) W5 of the cutout portion 101M. That is, when the connecting member (reinforcing member) 118 is fixed to the lower case 101, the notch 110M is closed at the same time. As a result, in the completed cooking device 1, no foreign matter enters through the cutout portion 110M.

With the above configuration, when induction heating cooking is performed in the upper unit 100, as shown by arrows in FIG. 42, the cooling winds RF1 and RF2 blown out from the first cooling fan 60 and the second cooling fan 61. Thus, the inverter circuit board 80, the input operation unit 40, the power supply circuit board 55, and the filter circuit board 54 are cooled.

Summary of the second embodiment.
As is clear from the above description, the heating cooker 1 according to the second embodiment has the configuration of the first invention.
That is, the heating cooker 1 according to the second embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body, IH coils 17L and 17R for heating an object to be heated on the top plate 15, an inverter circuit board 80 arranged below the coils 17L and 17R, and the IH coils 17L and 17R. A cover 70 installed between the inverter circuit board 80 and a first cooling fan 60 for introducing cooling air from the outside of the main body,
The first cooling fan 60 has rotating blades that rotate about a vertical axis, and faces the inlet of the first air passage F1 formed between the inverter circuit board 80 and the cover 70. ,
The first cooling fan 60 supplies the first cooling air RF1 from an inlet FI at one end of the first air passage F1 toward an outlet FO at the other end of the first air passage F1. is there.

With this configuration, the IH coil installation space CK and the installation space for the inverter circuit board 80 are vertically divided by the cover 70, and the inverter circuit board 80 can be effectively cooled.

The heating cooker 1 according to the second embodiment has the configuration of the second invention.
That is, the heating cooker 1 according to the second embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body, a left-side IH coil 17L and a right-side IH coil 17R, which are respectively arranged at two positions on the left and right, for heating an object to be heated on the top plate 15, are common to these two IH coils. Yes, and an inverter circuit board 80 arranged below the IH coils, a cover 70 installed between the two IH coils and the inverter circuit board 80, and installed near the left side wall surface of the main body, A first cooling fan 60 for introducing cooling air from a ventilation hole formed in the housing,
The cover 70 is installed in series from the first cooling fan 60 to a right side of the left side of the IH coil 17L.
The first cooling fan 60 has rotating blades that rotate about a vertical axis, and faces the inlet FI of the first air passage F1 formed between the inverter circuit board 80 and the cover 70. ,
The first cooling fan 60 supplies the first cooling air FR1 from the inlet FI at the left end of the first air passage F1 toward the outlet FO at the right end thereof.
An exhaust window 52A into which the first cooling air FR1 exiting from the first air passage F1 is introduced after passing through the space above the cover 70 is provided at the inner rear portion of the main body 10,
The formation position of the exhaust window 52A is on the left side of the position of the outlet FO of the first air passage F1.

Due to this configuration, the IH coil installation space CK and the installation space of the inverter circuit board 80 are vertically divided by the cover 70, and the inverter circuit board 80 can be effectively cooled. Moreover, the cooling air flowing out from the air passage F1 flows from the left side to the right side, and after passing directly under the cover 70, advances to the upper space to cool the right side IH coil 17R above and from this position. Proceed to the exhaust window 52A provided at a distant position.
Further, a part of the cooling air RF1 also cools the left IH coil 17L on the way to the exhaust window 52A. Therefore, the left and right IH coils 17L and 17R can be cooled without guiding the cooling air with a special guide plate or the like.

The heating cooker 1 according to the second embodiment has the configuration of the third invention.
That is, the heating cooker 1 according to the second embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body, IH coils 17L and 17R for heating an object to be heated on the top plate 15, an inverter circuit board 80 arranged below the IH coils 17L and 17R, and the IH coils 17L and 17R. Cover 70 installed between the main body 10 and the inverter circuit board 80, a first cooling fan 60 and a second cooling fan 61 for introducing cooling air from the outside of the main body 10, and a user operation input. And an input operation unit 40 for receiving,
The first cooling fan 60 has rotating blades that rotate about a vertical axis,
The first cooling fan 60 faces an inlet FI of a first air passage F1 formed between the inverter circuit board 80 and the cover 70, and the first cooling fan 60 is the first air passage. The configuration is such that the first cooling air FR1 is supplied from the inlet FI at one end of F1 toward the outlet FO at the other end,
The second cooling fan 61 is located closer to the input operation unit 40 than the first cooling fan 60 and is configured to supply the second cooling air FR2 to the input operation unit 40.

With this configuration, the inverter circuit board 80 below the IH coil installation space CK can be effectively cooled by the first cooling fan. Further, the input operation unit 40 can also be cooled by the second cooling fan.

The heating cooker 1 according to the second embodiment has the configuration of the fourth invention.
That is, the heating cooker 1 according to the second embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body 10, an IH coil for heating an object to be heated on the top plate 15, an inverter circuit board 80 arranged below the IH coil, and a space between the IH coil and the inverter circuit board. A cover 70 installed in the main body, a first cooling fan that introduces cooling air from the outside of the main body, and a power supply circuit board 55 that receives power from a commercial power supply to generate a necessary power supply,
The first cooling fan 60 has rotating blades that rotate about a vertical axis,
The first cooling fan 60 faces an inlet of a first air passage F1 formed between the inverter circuit board 80 and the cover 70, and the first cooling fan 60 has the first air passage F1. The first cooling air FR1 is supplied from the inlet at one end to the outlet at the other end,
The power supply circuit board 55 is arranged on the opposite side of the first cooling fan 60 with the cover 70 interposed therebetween.

With this configuration, the inverter circuit board 80 below the IH coil installation space CK can be effectively cooled by the first cooling fan. Further, since the cooling air F1 that has cooled the inverter circuit board 80 reaches the power supply circuit board 55 in the traveling direction, the electric component 85 mounted on the power supply circuit board 55 can be cooled.

The heating cooker 1 according to the second embodiment has the configuration of the fifth invention.
That is, the heating cooker 1 according to the second embodiment is
It has a flat body 10 having a top plate 15 on which an object to be heated is placed,
Inside the main body, an IH coil for heating an object to be heated on the top plate, an inverter circuit board 80 arranged below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board. And a first cooling fan 60 for introducing cooling air from the outside of the main body,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan has an intake port on a lower surface of a fan case, and has an outlet on a side surface for blowing cooling air,
A first air passage F1 formed below the cover 70 on a first horizontal plane HP1 that crosses the vertical center of the air outlet, a heat sink 82 arranged on the upper surface of the inverter circuit board 80, and the heat sink. And a power control switching element 93 attached to 82, respectively,
An exhaust window 52A for exhausting air after passing through the IH carps 17L and 17R is arranged on the second horizontal plane HP2 above the first horizontal plane HP1.

With this configuration, the heat sink of the inverter circuit board 80 can be effectively cooled by the cooling air RF1 that horizontally flows from the first cooling fan. Further, the cooling air RF1 that has cooled the inverter circuit board 80 travels upward, reaches the IH coils 17L, 17R, and reaches the exhaust window 52A in the horizontal direction, so that the IH coils 17L, 17R can also be cooled. ..

The heating cooker 1 according to the second embodiment has the configuration of the sixth invention.
That is, the built-in composite heating cooker 1 according to the second embodiment is
Which is installed in kitchen furniture,
An upper unit 100 having a first heating source 17 for heating the object to be heated via a top plate 15 on which the object to be heated is placed, and being supported by the kitchen furniture 2.
A lower unit 200 installed below the upper unit 100 and having a heating chamber 113 whose front opening is opened and closed by a door 114.
The lower unit 200 includes a microwave heating device 120 for supplying microwaves to the heating chamber 113, an oven heating device 140 for heating the heating chamber, and a cooling fan 128 for cooling the microwave heating device. 129 and
The microwave generation source 122 of the microwave heating device 120 is disposed along any one of the left and right side wall surfaces of the heating chamber 113, and the oscillating portion 122A of the microwave generation source 122 has a rear surface of the heating chamber 113. It is installed sideways so that it projects to the side,
On the back side of the heating chamber 113, a power supply port 180 communicating with the inside of the heating chamber 113 and an antenna case 124 into which the microwave from the microwave generation source 122 is introduced are provided.
In the antenna case 124, a rotatable antenna 125 is arranged for propagating the microwave oscillated from the microwave generation source 122 to the space in the heating chamber 113 via the power supply port 180. It is a configuration.

Due to this configuration, the magnetron 122 and the antenna case 124 of the microwave heating device 120 can be installed in a space from one side wall surface (right side surface) of the heating chamber 113 to the back side in a series, and a narrow internal space. These devices can be incorporated in the lower unit 200 of the above.

The heating cooker 1 according to the second embodiment has the configuration of the seventh invention.
That is, the built-in composite heating cooker 1 according to the second embodiment is
Which is installed in the kitchen furniture 2,
An upper unit 100 having an induction heating source 17 for heating the object to be heated via a top plate 15 on which the object to be heated is placed, and being supported by the kitchen furniture 2.
A lower unit 200 installed below the upper unit 100 and having a heating chamber 113 whose front opening is opened and closed by a door 114.
The lower unit 200 is supplied with electric power from the upper unit 100 and supplies a microwave to the heating chamber 113, a microwave heating device 120 for heating the heating chamber 113, and an oven heating device 140 for heating the heating chamber 113. Cooling fans 128 and 129 for cooling the wave heating device 120,
The microwave generation source 122 of the microwave heating device 120 is arranged along one right side wall surface or one left side wall surface of the heating chamber 113, and the oscillating portion 122A of the microwave generation source 122 is on the back side of the heating chamber 113. It is installed sideways so that it projects to
An antenna case 124 into which the microwave from the microwave generation source 122 is introduced is provided on the back side of the heating chamber 113,
In the antenna case 124, microwaves oscillated from the microwave generation source 122 are propagated to a space inside the heating chamber 113 through a power supply port 180 provided on the back surface of the heating chamber 113. Arrange the rotated antenna 125,
The operations of the induction heating source 17, the microwave heating device 120, the oven heating device 140, and the cooling fans 128 and 129 are controlled by an integrated control device MC on the upper unit 100 side. Is.

Due to this configuration, the microwave oscillator (magnetron 122) of the microwave heating device 120 and the antenna case 124 are installed in a series in a space from one side wall surface (right side surface) of the heating chamber 113 to the back surface side. Therefore, these devices can be built in the lower unit 200 having a narrow internal space.

Furthermore, the integrated control device MC that controls the induction heating source 17 also centrally controls the microwave heating device 120, the oven heating device 140, the third cooling fan 128, and the fourth cooling fan 129. It is possible to provide the built-in composite heating cooker 1 in which the cooperation of the heating sources is surely executed.

The heating cooker 1 according to the second embodiment has the configuration of the eighth invention.
That is, the built-in composite heating cooker 1 according to the second embodiment is
Which is installed in the kitchen furniture 2,
An upper unit 100 having an induction heating source 17 for heating the object to be heated via a top plate 15 on which the object to be heated is placed, and being supported by the kitchen furniture 2.
A lower unit 200 installed below the upper unit 100 and having a heating chamber 113 whose front opening is opened and closed by a door 114.
The lower unit 200 includes a microwave heating device 120 that receives electric power from the upper unit 100 and supplies microwaves to the heating chamber 113, and an oven heating device 140 that heats the heating chamber 113. ,
The microwave heating device 120 includes a microwave heating control unit 130, a microwave generation source 122, and a first inverter circuit board 121 that supplies high-frequency power to the microwave generation source 122.
The oven heating device 140 includes a heating chamber control unit 159,
The microwave generation source 122 and the first inverter circuit board 121 are arranged along one side wall surface of the heating chamber 113 and apart from each other in the front-rear direction,
Below the first inverter circuit board 121 and below the heat dissipation part 122H of the microwave generation source 122, air is sucked from the outside of the lower unit 200, and the air is sucked into the first inverter circuit. A front side cooling fan 128 and a rear side cooling fan 129, which are individually supplied to the substrate 121 and the heat dissipation portion 122H, are arranged.

Due to this configuration, the microwave oscillator (magnetron 122) of the microwave heating device 120 and the inverter circuit board 121 are built in the lower unit 200 in a narrow inner space on one side wall surface (right side surface) of the heating chamber 113. Can be made

Further, since the front side (third) cooling fan 128 and the rear side (fourth) cooling fan 129 for individually cooling the heat dissipation portion 122H and the inverter circuit board 121 are respectively arranged, It is possible to prevent the microwave heating device 120 from overheating.

The heating cooker 1 according to the second embodiment has the configuration of the ninth invention.
That is, the built-in composite heating cooker 1 according to the second embodiment is
A first heating source 17 for heating the object to be heated through a top plate 15 on which the object to be heated is placed; and a flat main body 10 whose top opening is closed by the top plate 15. And an upper unit 100 supported by kitchen furniture,
A heating chamber 113 to which microwaves are supplied, and a lower unit 200 having a microwave generation source 122 built therein,
A connecting member 118 connecting the upper unit 100 and the lower unit 200,
The connection member 118 is installed in a state of being close to or in close contact with at least one side wall surface of the lower unit 200 and at least one side wall surface of the upper unit 100. , Which are combined with each other.

Due to this configuration, even if the microwave heating device 120 is provided on the lower unit 200 side, the upper unit 100 and the lower unit 200 can have a strong integrated structure. Therefore, it is possible to prevent the structure from being deformed due to long-term use, prevent the situation in which the degree of contact between the heating chamber 113 and the door is reduced due to the deformation, and prevent the microwave from leaking. It is possible to provide the heating cooker 1 with high efficiency.

The heating cooker 1 according to the second embodiment has the configuration of the tenth invention.
That is, the built-in composite heating cooker 1 according to the second embodiment is
A first heating source 17 for heating the object to be heated through a top plate 15 on which the object to be heated is placed; and a flat main body 10 whose top opening is closed by the top plate 15. And an upper unit 100 supported by the kitchen furniture 2,
A heating chamber 113 to which microwaves are supplied, and a lower unit 200 having a microwave generation source 122 built in the lower case 101 are provided.
The upper case 16 forming the outer shell of the main body 10 and the lower case 101 are each formed of a thin metal plate,
Side walls 16L and 16R extending in the vertical direction are formed at the peripheral edge of the upper case 16.
The entire lower surface of the lower case 101 is open, and the upper unit 100 and the lower unit 200 are connected to each other with the upper case 16 fitted inside the opening.

Due to this configuration, even if the microwave heating device 120 is provided on the lower unit 200 side, the upper unit 100 and the lower unit 200 can have a strong integrated structure. Therefore, it is possible to prevent the structure from being deformed due to long-term use, for example, the degree of close contact between the heating chamber 113 and the door is reduced due to the deformation, and it is possible to prevent a situation in which microwaves leak. A highly safe heating cooker 1 can be provided.

The heating cooker 1 according to the second embodiment has the configuration of the eleventh invention.
That is, the built-in composite heating cooker 1 according to the second embodiment is
A top plate 15 on which an object to be heated is placed, an induction heating source 17 for heating the object to be heated through the top plate 15, and a flat upper case in which an opening on the upper surface is closed by the top plate 15. 16, and an upper unit 100 that is supported by the kitchen furniture 2;
A heating chamber 113 to which microwaves are supplied; and a lower unit 200 having a microwave heating device 120 built in a lower case 101,
In a state where the upper case 16 is placed on the lower case 101, the bottom wall of the upper case 16 also serves as the ceiling surface of the lower case 101.

With this configuration, a dedicated partition plate for covering the ceiling of the lower case 101 and a structure such as a lid plate are not required, the manufacturing cost can be significantly reduced, and the weight can be reduced.
Further, immediately below the upper case 101, a cavity 104 that is large in plan view and has a large depth dimension BH is formed behind the heating chamber 113. Therefore, the waveguide 123 and the power supply circuit board are provided in this cavity. 127 (including the circuit board of the microwave heating controller 130 and the heating chamber controller 159) can be accommodated.

Further, if the cavity 104 is located directly below the filter substrate circuit 54, the cavity 104 can be conveniently used when the external commercial AC power source 99 is drawn into the heating cooker 1 by the power cord.

The heating cooker 1 according to the second embodiment has the configuration of the twelfth invention.
That is, the built-in composite heating cooker 1 according to the second embodiment is
A top plate 15 on which an object to be heated is placed, an induction heating source 17 that heats the object to be heated via the top plate 15, and a flat upper case 16 whose top opening is closed by the top plate 15. And an upper unit 100 supported by the kitchen furniture 2,
A lower unit 200 having a heating chamber 113 which is heated from above and below by an upper heater 163A and a lower heater 163B.
The lower unit 200 includes a lower case 101 that forms an outer shell, a door that opens and closes the opening 113A of the heating chamber 113, and an arm 116 that supports the door 113 on the lower unit 200.
The lower unit 200 includes a microwave oscillation source 122 on the right side or the left side of the heating chamber 113, and a case A150 having a built-in inverter circuit board 121 for supplying high frequency power to the microwave oscillation source 122. Prepare,
The case A150 is arranged in front of the microwave oscillation source 122A,
Inside the lower unit 200, a space 144 is provided on the front side of the case A150,
The arm 116 and the door opening/closing detection mechanism 131 of the door 114 are housed inside the space 144 in a state of being adjacent to each other and with the door opening/closing detection mechanism 131 located outside.

With this configuration, the arm 116 moves in the front-rear direction in accordance with the opening/closing operation of the door 114, and thus requires a relatively large installation space, but the arm 116 is a space in front of the microwave generation source 122. Since it is housed in the 144, the microwave generation source 122 and its related structures can be concentratedly arranged in the rear of the space 144, and various structures can be efficiently arranged within the outer dimensions required by the built-in type. The cooker 1 can be provided.

Embodiment 3.
55 to 56 show a heating cooker according to the third embodiment. This embodiment is characterized in that the arm 116 for supporting the door 114 of the heating cooker 1 and the structure for facilitating maintenance/inspection of the door opening/closing detection mechanism 131 are improved. Note that the same or corresponding portions as those in FIGS. 1 to 54 are denoted by the same reference numerals, and redundant description may be omitted.

FIG. 55 is a horizontal cross-sectional view of the main part showing the right front part of the lower unit 200, showing the door 114 in a closed state. However, the door 114 and the front cover 112 are shown by broken lines for reference.

In FIG. 55, reference numeral 150 denotes a case A having a hollow interior, which is entirely made of plastic. An inverter circuit board 121 (not shown) is vertically installed inside the case A150.

Reference numeral 122 denotes a magnetron 122 which serves as a microwave oscillation source, and is arranged immediately behind the case A 150 and in close proximity thereto. Cooling air RF5 and RF6 are supplied to the magnetron 122 and the case A150 by a third cooling fan 128 and a fourth cooling fan 129, respectively.

A space 144 surrounded by the lateral vertical wall 101R and the right partition plate 166R from both sides is formed between the case A150 and the front plate 101F.
Reference numeral 137 is a support plate to which the latch switch 132A (not shown), the door switch 132B, and the monitor switch 133 (not shown) are collectively attached.
The support plate 137 is installed vertically, and is fixed to the bottom plate 101U of the lower case 101 and the front plate 101F with screws 146, respectively.

Reference numeral 116 is a metal arm whose front end is rotatably supported by the door 114, and penetrates through a through hole 117 formed in the front plate 101F. At the rear end of the arm 116, a coil-shaped tension spring 149 for constantly pulling the arm 116 rearward and obliquely downward with respect to the horizontal plane is installed.

Reference numeral 101M denotes a cutout portion formed in the lateral vertical wall 101R, and reference numeral 119 denotes a lid plate that closes the cutout portion 101M from the outside, and is formed of a thin metal plate. The lid plate 119 is attached so as to be detachable from the outside with a screw (not shown) or the like.

When a repairer or the like removes the cover plate 119 during maintenance and inspection of the heating cooker 1, the door opening/closing detection mechanism 131 can be visually observed through the cutout portion 101M. Further, by removing the support plate 137 from the outside of the cutout 101M, the inspection, repair, and replacement of the latch switch 132A (not shown), the door switch 132B, and the monitor switch 133 (not shown) can be performed. Easy to do. In this case, since the support plate 137 is located in front of the arm 116 as viewed from the cutout 101M, the above work is easy to perform.

In the third embodiment, since the cutout portion 101M is provided, it is not necessary to remove the side opening/closing detection mechanism 131 from the side vertical wall 101R when performing maintenance/inspection. If only 101R can be separated, the notch 101M need not be provided.

FIG. 56 is a bottom view of the entire cooking device 1 viewed from below. As shown by the broken line in FIG. 56, the lower case 101 has a large width in the portion facing the connecting member 118. Therefore, the left vertical portion 118L of the connecting member 118 directly overlaps the surface of the lateral vertical wall 101L and is fixed by the screw 148. By increasing the lateral width in this way, the internal space of the lower case 101 correspondingly increases, and the arm 116 on the left side of the door 114, the tension spring 149 for constantly pulling the arm 116, and the like can be installed. It will be easy.

The heating cooker 1 of the third embodiment has the configuration of the twelfth invention.
That is, the built-in type composite heating cooker 1 according to the third embodiment is
A top plate 15 on which an object to be heated is placed, an induction heating source 17 that heats the object to be heated via the top plate 15, and a flat upper case 16 whose top opening is closed by the top plate 15. And an upper unit 100 supported by the kitchen furniture 2,
A lower unit 200 having a heating chamber 113 which is heated from above and below by an upper heater 163A and a lower heater 163B.
The lower unit 200 includes a lower case 101 that forms an outer shell, a door that opens and closes the opening 113A of the heating chamber 113, and an arm 116 that supports the door 113 on the lower unit 200.
The lower unit 200 includes a microwave oscillation source 122 on the right side or the left side of the heating chamber 113, and a case A150 in which an inverter circuit board 121 that supplies high frequency power to the oscillation source 122 is incorporated.
The case A150 is arranged in front of the microwave oscillation source 122A,
Inside the lower unit 200, a space 144 is provided on the front side of the case A150,
The arm 116 and the door opening/closing detection mechanism 131 of the door 114 are housed inside the space 144 in a state of being adjacent to each other and with the door opening/closing detection mechanism 131 located outside.

Since the arm 116 moves in the front-rear direction with the opening/closing operation of the door 114, it requires a relatively large installation space. However, since the arm 116 is housed in the space 144 in front of the microwave generation source 122. In the rear of the space 144, the microwave generation source 122 and its related structures can be concentratedly arranged, and the cooking device 1 in which various structures are efficiently arranged within the outer dimensions required by the built-in system. Can be provided.

Conventionally, the arm 116 that supports the door 114 and moves with opening and closing of the door requires a large installation space in order to secure its movable range.
According to the configuration of the third embodiment, the arm 116 is arranged on the side closer to the heating chamber 113, and the door open/close detection mechanism 131 is centrally arranged on the outer side of the arm 116, that is, on the side opposite to the heating chamber 113. Therefore, coupled with the fact that the magnetron 122 and the inverter circuit board 121 are arranged side by side on the side of the heating chamber 113, as a whole, the microwave can be efficiently and efficiently placed in the side space of the heating chamber 113. A built-in type composite cooker with limited external dimensions can be designed in a compact size because it can store the parts required for heating.

Further, a third cooling fan 128 and a fourth cooling fan 129 are arranged at a position right below the case A150 and a position right below the magnetron 122, and the cooling air from the third cooling fan 128 is inside the case A150. If the configuration in which the inverter circuit board 121 is cooled and the magnetron 122 is cooled by the cooling air from the fourth cooling fan 129, the suction side and the exhaust side of the cooling air can be unified, and the air passage inside the lower case 200 can be made. Can be simplified, and the internal structure of the lower case 200 can be simplified or made more compact.

Fourth Embodiment
FIG. 57 shows a heating cooker according to the fourth embodiment. This embodiment is characterized in that the connecting member 118 for connecting the upper unit 100 and the lower unit 200 of the heating cooker 1 is improved. Note that the same or corresponding portions as those in FIGS. 1 to 56 are denoted by the same reference numerals, and redundant description may be omitted.

57 is a vertical cross-sectional view of the same portion as FIG. 9 of the first embodiment.
Reference numeral 118 is a connecting member for integrating the upper unit 100 and the lower unit 200, and is also installed for the purpose of reinforcement.

Unlike the third embodiment, the connecting member 118 according to the fourth embodiment is divided into two parts.
That is, it is composed of two parts, a right vertical portion 118R and a left vertical portion 118L.

The right vertical portion 118R is formed by pressing a metal plate, and is fixed along the right side surface (side vertical wall 101R) of the lower unit 200.
The left vertical portion 118L is formed by pressing a metal plate, and is fixed along the left side surface (side vertical wall 101L) of the lower unit 200.

The right vertical portion 118R is fixed at a plurality of points by screws 148 so as to be in close contact with the lateral vertical portion 101R. Similarly, the left vertical portion 118L is also fixed to the lateral vertical wall 101L by screws 148.

A large number of through holes 118H are formed in the left vertical portion 118L so as not to interfere with the intake air from the ventilation holes 164. 118TL and 118TR are support sides formed at the upper ends of the left vertical portion 118L and the right vertical portion 118R. These two support pieces 118TL and 118TR are formed by horizontally bending the left and right vertical portions 118L and 118R of the connecting member (reinforcing member) 118.

When the connecting members 118 are fixed to the left and right side surfaces of the lower unit 200, the support pieces 118L and 118R come close to or abut the lower surface of the flange 16A of the upper unit 100. Therefore, the load received by the top plate 15 and the like of the upper unit 100 from above can be reliably received by the support pieces 118L and 118R of the connecting member 118.

In the fourth embodiment, the connecting member 118 is a flat part as compared with the connecting member 118 of the third embodiment. For this reason, it is advantageous in terms of manufacturing cost, and the work of fixing the connecting members 118 to the left and right side surfaces of the lower unit 200 can be facilitated as compared with the case of the third embodiment.

Further, when the cutout portion 101M is formed in the front portion of the lateral vertical wall 101L of the lower case 101, the cutout portion 101M can be normally closed by the right vertical portion 118R. When the door opening/closing detection mechanism 131 needs to be inspected or repaired, only the right vertical portion 118R on one side needs to be removed, so that the work efficiency can be improved.

The heating cooker 1 of the fourth embodiment has the configuration of the tenth invention.
That is, the built-in type composite heating cooker 1 according to the fourth embodiment is
The kitchen includes an induction heating source 17 that heats the object to be heated through a top plate 15 on which the object to be heated is placed, and a flat body 10 whose top opening is closed by the top plate. An upper unit 100 supported by the furniture 2,
A heating chamber 113 to which microwaves are supplied, and a lower unit 200 having a microwave generation source 122 built in the lower case 101 are provided.
The upper case 16 forming the outer shell of the main body 10 and the lower case 101 are each formed of a thin metal plate,
Vertically extending lateral vertical walls (overlapping portions) 16L and 16R are integrally formed at the peripheral edge of the upper case 16.
The lower case 101 has a structure in which the entire upper surface is opened, and the upper unit 100 and the lower unit 200 are connected to each other in a state where the upper case 16 is fitted inside the opening.

Due to this configuration, even if the microwave heating device 120 is provided on the lower unit 200 side, the upper unit 100 and the lower unit 200 can have a strong integrated structure. Therefore, it is possible to prevent the structure from being deformed due to long-term use, and it is possible to prevent the situation in which the degree of adhesion between the heating chamber 113 and the door 114 is reduced due to the deformation and the microwave leaks. It is possible to provide the heating cooker 1 with high safety.

Embodiment 5.
FIG. 58 shows a heating cooker according to the fifth embodiment. This embodiment is characterized in that a gap GP12 is provided between the upper unit 100 and the lower unit 200 of the heating cooker 1 and that the connecting member 118 that connects the exhaust fan to the inside of the lower unit 200 is improved. Is. Note that the same or corresponding portions as those in FIGS. 1 to 57 are denoted by the same reference numerals, and redundant description may be omitted.

FIG. 58 is a vertical sectional view of the same portion as that of FIG. 9 of the first embodiment.
The lower case 101 is suspended from the upper case 16. A minute gap GP12 is formed between the partition plate 171 that constitutes the substantial ceiling surface of the lower case 101 and the bottom wall 16S of the upper case 16. The gap GP12 is automatically formed when the upper case 16 and the lower case 101 are connected by the connecting member 118 or the like. Note that N is an object to be heated such as a metal pot.

The gap GP12 extends over the entire partition plate 171 of the lower case 101, and is open to the surroundings (front and rear, left and right). It is sufficient that the size of the gap GP12 is several mm or less. If it is too large, it is necessary to reduce the outer dimensions of the upper unit 100 and the lower unit 200. The gap GP12 is provided to reduce the thermal influence from the heating chamber 113 of the lower unit 200 as much as possible, and is expected to have a heat insulating effect by the air layer.

155 is an exhaust fan. The exhaust fan 155 is arranged inside the lower case 101, behind the left corner of the heating chamber 113. The rotation shaft of the exhaust fan 155 is long in the left-right direction and is horizontally installed. And the rotary blade is attached around the rotation axis.

Reference numeral 102 denotes an exhaust duct whose one end opening is connected to the exhaust port side of the exhaust fan 155 and which extends vertically below the exhaust cover 19 to a desired position. An exhaust window 52A of the partition plate 52 faces the vicinity of the final exhaust port of the exhaust duct 102. Therefore, the cooling air that has flowed through the IH coil installation space CK of the upper unit 100 passes through the exhaust window 52A. Then, it is guided to the exhaust flow discharged from the exhaust duct 102 and discharged to the outside.

The microwave from the magnetron 122 (not shown) of the microwave heating device 120 is introduced into the heating chamber 113. Although not shown, an upper heater 163A and a lower heater 163B are arranged near the bottom surface and the ceiling surface of the heating chamber 113, respectively.

Reference numeral 156 is an intake hole formed in the bottom plate 101U of the lower case 101 on the side closer to the door 114, and is formed by providing a plurality of holes having a small diameter.
113H is an exhaust hole provided on the ceiling surface of the heating chamber 113. As shown in FIG. 58, the exhaust holes 113 are provided on the side closer to the door 114 and on the opposite side closer to the back surface.

What is indicated by a dashed arrow in FIG. 58 shows the flow of air sucked by the drive of the exhaust fan 155. As described in the first embodiment, the cooling air RF6 after cooling the heat radiating portion 122H of the magnetron 122 is introduced into the heating chamber 113.

On the other hand, the cooling air RF5 after cooling the inverter circuit board 121 is guided to the vicinity of the suction port of the exhaust fan 155. This guidance is performed so as to pass through the outside without passing through the inside of the heating chamber 113.

Therefore, also in the fifth embodiment, the inverter circuit board 121 of the microwave heating device 120 and the magnetron 122 are simultaneously cooled by the cooling air of two systems, and finally, the exhaust fan 155 forcibly discharges them to the outside. To be done. Therefore, there is no concern that the cooling air that has cooled the microwave heating device 120 will stay inside the lower unit 200.

TS10 is a temperature sensor that detects the temperature of the air discharged from the heating chamber 113. The temperature measurement data of this temperature sensor is sent to the heating chamber control unit 159 and used for controlling the ambient temperature of the heating chamber 113 and for detecting the overheated state.

Reference numeral 157 denotes a seal material for suppressing microwave leakage from between the door 114 and the front plate 101F of the lower unit 200, which is a microwave absorbing rubber or the like having elasticity.

The GP 13 is a space formed between the door 114 and the kitchen furniture 2. This void is minimally needed to open the door 114 forward.

According to the configuration of the fifth embodiment, the gap GP12 is formed between the upper unit 100 and the lower unit 200 in a state where the upper unit 100 and the lower unit 200 are connected to each other. Therefore, it is possible to prevent the filter circuit board 54, the power supply circuit board 55 and the like built in the upper unit 100 from being heated from below.

Sixth embodiment.
FIG. 59 shows a built-in type composite heating cooker according to the sixth embodiment. Note that the same or corresponding portions as those of the configurations of the respective embodiments described in FIGS. 1 to 58 are denoted by the same reference numerals.

FIG. 59 is a block diagram showing a particularly electrical configuration of the heating cooker 1 according to the sixth embodiment of the present invention. In FIG. 59, an arrow indicated by a broken line indicates a command signal for control.
In the heating cooker 1 according to the sixth embodiment of the present invention, there are a total of six control devices mainly composed of a microcomputer. This point is a point greatly different from the first to fifth embodiments.

Of the six control devices described above, the integrated control device MC controls the entire heating cooker 1. It is the control device 90 that controls the induction heating cooking in response to the command from the integrated control device MC. Further, the control device 105 controls the microwave heating cooking and the oven heating cooking. The control device 105 is an assembly of the heating chamber control unit 159 and the microwave heating control unit 130 described in the first embodiment.

Since the two control devices 90 and 105 described above perform prescribed control according to a command to the integrated control device MC and return the processing result to the integrated control device MC, they may be called slave (SLAVE) microcomputers. In this case, the integrated control device MC is called a master microcomputer.

The remaining three of the above-mentioned six control devices are the right input control device 23 that processes the input of the right touch key group and the display of the display unit 31R in the input operation unit 40, and the left touch key group. A left-side input control device 24 that processes input and display on the display unit 31L, and a power switch control device 28.
The power switch controller 28 detects the operation of the operation button (operation unit) 98 of the main power switch 97 arranged in the input operation unit 40, and determines ON/OFF of the power.

In FIG. 59, 106A is a plug connected to a commercial (AC) power source 99. Electric power of voltage 200 V, 50 Hz or 60 Hz is led to the filter circuit board 54 via the power cord 106. The filter circuit board 54 is built in the upper unit 100.

The filter circuit board 54 has a main relay 107 for turning on/off the main power source of the heating cooker 1 and a sub relay (not shown). In FIG. 59, only the main relay is schematically shown.

The main relay 107 is opened/closed by receiving a predetermined relay control signal from the integrated control device MC that controls the entire cooking device 1. As will be described later, the sub-relay receives the relay control signal from the power switch control means 28 and executes the opening/closing operation. The power switch control means 28 has a function of detecting the operation of the operation button 98 of the main power switch 97 and deciding whether to turn the power on or off. The main power switch 97 is constituted by the main relay 107 and the sub relay.

The integrated control device MC always obtains operation information from the control devices 90 and 105, the right input control device 23, the left input control device 24, and the power switch control device 28, and controls them by integrating them. Further, it controls the display operation of the central control unit 30 and the voice synthesizer 95 and the wireless communication unit 49. The integrated control device MC, the right side input control device 23, and the power switch control device 28 are attached to a central operation board 32 that constitutes an input operation unit 40.

The central operation board 32 is similar to the operation board 41 described in the first embodiment, and includes various electronic components described later, the integrated control device MC, the right side input control device 23, and the power switch control device 28. Etc. are implemented. The central operation board 32 is formed of a plastic material having high electrical insulation.

Reference numeral 55 denotes a power supply circuit board to which electric power of a commercial power supply is supplied from the filter circuit 54. As shown in FIG. 59, the power supply circuit A34 to which electric power is applied via the rectifier circuit 33 and the rectifier circuit 35 are connected. And a power supply circuit B36 to which electric power is applied via. By the two power supply circuits A34 and B36, the power of voltage 200V is converted into direct current of low voltage such as 24V, 18V, 6V, 5V.

The electric power of 5V is supplied as power to the integrated control device MC, the control devices 90 and 105, the right side input control device 23, the left side input control device 24, and the power switch control device 28.
Further, the power of 6V is used as the power source (including the backlight power source) of the central display unit 30, the right display unit 31R, and the left display unit 31R.

The power supply circuit board 55 is installed in the upper unit 100, and as described above, the power generated by the power supply circuit A34 and the power supply circuit B36 is used as the power supply for the control and the display unit in the upper unit 100. Has been done.

Reference numeral 80 denotes an inverter circuit board of the induction heating source 17 installed inside the upper unit 100.
The inverter circuit board 80 includes a right side inverter circuit 81R including a DC power supply unit 75R and a left side inverter circuit 81L including another DC power supply unit 75L.

AC power having a voltage of 200 V is applied to the inverter circuit board 80 from the filter circuit 54. Reference numeral 90 denotes a control device that controls overall induction heating, and is mainly configured by a microcomputer.

The control device 90 sends a drive signal to the drive circuits 37L and 37R that drive the IGBTs 79a and 79b in the inverter circuits 82L and 82R. The two drive circuits 37L and 37R operate with the electric power of 18V supplied from the power supply circuit A34 and the power supply circuit B36, and control the IGBTs 79a and 79. As a result, the drive frequencies of the inverter circuits 81L and 81R are controlled.

For example, the drive circuit A37R detects the conduction time of the power switching element 93 (semiconductor switching element) (IGBTs 79a, 79b) and switches the conduction time to reduce the drive frequency of the inverter circuit 81R and reduce the thermal power. Or, conversely, the driving frequency is increased to control the heating power. These drive frequency commands are issued from the control device 90.

Reference numeral 77a is an input current detector installed on the commercial power source side of the inverter circuits 81L and 81R, and reference numeral 77b is an output current detector that detects electric power on the output side of the inverter circuits 81L and 81R.
The detection values of the input current detector 77a and the output current detector 77b are input to the controller 90.

At the initial stage of induction heating cooking, the control device 90 determines the material quality of the object to be heated.
For example, when changing from one drive frequency to another drive frequency, the change in the input current value is checked to determine that the material to be heated such as a pan is magnetic metal, non-magnetic stainless steel, aluminum, etc. Then, the drive frequencies of the switching elements (IGBTs) 79a and 79b are automatically adjusted to appropriate values. When it is determined that the material to be heated is non-magnetic stainless steel, the material to be heated is driven at a drive frequency (for example, 31 kHz) higher than the drive frequency (for example, 23 KHz) when it is determined to be iron.

TS5 and TS6 are non-contact temperature sensors installed in the voids of the IH coils 17L and 17R, and TS3 and TS4 are contact temperature sensors installed in the center of the IH coils 17L and 17R. Further, TS8 and TS9 are contact-type temperature sensors installed on the heat sink 82 of the inverter circuit board 80. The temperature detection data of each of these temperature sensors is input to the integrated control device MC.

In the first embodiment, the temperature detection circuit 93 is provided, but in the sixth embodiment, the temperature detection circuit 93 in such a hardware format is not provided. Processing such as temperature detection, temperature comparison, and presence/absence of abnormality is executed by software in the integrated control device MC.

Reference numeral 131 is a door opening/closing detection mechanism. The door opening/closing detection mechanism 131 includes one switch that is opened/closed in accordance with the opening/closing operation of the door 114, and a monitor switch that detects that the switch is opened/closed properly. This point is the same as that described in the first and second embodiments.

Reference numeral 120P denotes a power supply circuit unit of the microwave heating device 120, which generates AC power from a commercial voltage (200V) supplied from the filter circuit 54 as a low-voltage (for example, 24V and 5V) power supply. The power of 5V is supplied as the power source of the control device 105, and the power of 24V is supplied to the drive circuits 177 of the third cooling fan 128 and the fourth cooling fan 129, respectively. Further, the electric power of 24V is supplied as a driving power source for the antenna driving motor 126.

Energization of the upper heater 163A and the lower heater 163B that heat the heating chamber 113 is controlled by the control device 105 opening and closing the relays 178A and 178B. The relays 178A and 178B may use semiconductor switching elements capable of finely controlling the duty ratio, but in the sixth embodiment, only ON-OFF control is performed, so relays are adopted. There is. The same voltage as the commercial power source, which is 200 V, is applied to the upper heater 163A and the lower heater 163B to operate.

132M is a door opening detection switch which constitutes a part of the door opening/closing detection mechanism 131. The switch itself is installed inside the door opening/closing detection mechanism 131, but in FIG. 59, it is drawn in another position to show that the opening/closing signal is input to the control device 105.

Reference numeral 160 is an infrared sensor for measuring the temperature of food or the like in the heating chamber 113, and TS2 is a contact sensor for measuring the temperature of the magnetron 122 of the microwave heating device 120. The temperature detection data of the sensors 160 and TS2 are all input to the control device 105.

121A is an inverter circuit that supplies high-frequency power to the magnetron 122, and oscillation is controlled by a relay 182 inserted in the power supply side circuit. The control device 105 opens and closes the relay 182.

60P and 61P are drive circuits for driving the first cooling fan 60 and the second cooling fan 61, respectively. The drive circuits 60P and 61P operate in response to a command from the control device 90.

In FIG. 59, a temperature sensor for monitoring the temperature of the central display unit 30 and the input operation unit 40 is not shown, but such a temperature sensor is actually installed, and during heating and cooking (always at regular time intervals). 2) The integrated control device MC acquires the temperature measurement data and monitors it so that it does not reach an abnormal temperature.

Reference numeral 38 denotes a left operation board, which is installed on the left side of the central operation board 32 and is made of an electrically insulating material. The left side input control device 24 and the left side display unit 31L are attached to the left side operation board 38. The left operation board 38 and the central operation board 32 are arranged adjacent to each other so as to be aligned on substantially the same plane.

Since the heating cooker 1 according to the sixth embodiment is configured as described above, when the heating cooking is started, the operation key 98 of the input operation unit 40 is pressed to turn on the main power switch 97 first. For example, if the switch is pressed for several seconds, the power switch controller 28 detects this operation and closes the main relay 107 in the filter circuit board 54.

Therefore, the commercial power is supplied from the filter circuit board 54 to the power supply circuit board 55. Then, the power supply circuit A34 and the power supply circuit B36 of the power supply circuit board 55 generate a power supply of a predetermined voltage and apply it to the integrated control device MC.

When activated, the integrated control device MC first performs an initial self-diagnosis before starting the heating operation, and confirms that no abnormality has occurred. Further, the central display unit 30 is activated to display the initial information.

In this state, when the user opens the door 114 of the heating chamber 113 in order to use the microwave heating device 120, the door opening/closing detection mechanism 131 sends a signal indicating the opening of the door 114 to the control device 105. Therefore, the control device 105 transmits a signal indicating the opening of the door 114 to the integrated control device MC. The integrated control device MC presumes that the user will perform microwave heating cooking, displays necessary information for starting microwave heating on the central display unit 30, and prompts an input for starting heating.

When the user puts food or the like in the heating chamber 113 and closes the door 114, the door open/close detection mechanism 131 again transmits a detection signal indicating the closing of the door 114 to the integrated control device MC via the control device 105. . Therefore, when a heating start command is issued from the input operation unit 40 in this state, the right-side input control device 23 detects whether or not a touch input has been made on the input key for microwave heating. Therefore, a signal indicating a heating start command is transmitted from the right side input control device 23 to the integrated control device MC. The right side input control device 23 also detects the input from the central operation unit 40M described in the first embodiment. When the various touch input keys 43M and 44M as described in the first embodiment are operated, the input signal corresponding to the operation is transmitted to the integrated control device MC.

The integrated control device MC sends a drive command to the control device 105 that controls the microwave heating operation, closes the relay 182, drives the inverter circuit 121A, and starts microwave heating. At the same time, an operation command signal is output to the drive circuits 177A and 177B of the third cooling fan 128 and the fourth cooling fan 129 to start the operation of these two cooling fans 128 and 129. Further, although not shown in FIG. 59, the antenna driving motor 126 is driven to rotate the antenna 125. As a result, microwaves are introduced into the heating chamber 113 to heat and cook the food.

As is clear from the above description, the first cooling fan 60 and the second cooling fan 61 of the upper unit 100 are not operated at all during the microwave heating cooking. Therefore, the power consumption of the entire cooking device 1 can be reduced.

Since the touch-type input key section that constitutes the input operation section 40 is provided with electrodes for detecting a change in capacitance corresponding to each touch key area, such electrodes and the parts of each touch key are provided. A large number of parts such as an LED (light emitting diode) for illuminating the light source are required. Therefore, although not shown in FIG. 59, the components forming the touch input key unit are mounted on the central operation board 32 and the left operation board 38. The parts of the input key 98 of the power switch 97 are also mounted on the central operation board 32.

(Summary of Embodiment 6)
The heating cooker 1 of the sixth embodiment has the configuration of the seventh invention, as in the first embodiment.
That is, the built-in type composite heating cooker 1 according to the sixth embodiment is
Which is installed in the kitchen furniture 2,
An upper unit 100 having an induction heating source 17 for heating the object to be heated via a top plate 15 on which the object to be heated is placed, and being supported by the kitchen furniture 2.
A lower unit 200 installed below the upper unit 100 and having a heating chamber 113 whose front opening is opened and closed by a door 114.
The lower unit 200 is supplied with electric power from the upper unit 100 and supplies a microwave to the heating chamber 113, a microwave heating device 120 for heating the heating chamber 113, and an oven heating device 140 for heating the heating chamber 113. Cooling fans 128 and 129 for cooling the wave heating device 120,
The microwave generation source 122 of the microwave heating device 120 is arranged along one right side wall surface or one left side wall surface of the heating chamber 113, and the oscillating portion 122A of the microwave generation source 122 is on the back side of the heating chamber 113. It is installed sideways so that it projects to
An antenna case 124 into which the microwave from the microwave generation source 122 is introduced is provided on the back side of the heating chamber 113,
In the antenna case 124, microwaves oscillated from the microwave generation source 122 are propagated to a space inside the heating chamber 113 through a power supply port 180 provided on the back surface of the heating chamber 113. Arrange the rotated antenna 125,
Operations of the induction heating source 17, the microwave heating device 120, the oven heating device 140, and the cooling fans 128 and 129 are controlled by an integrated control device MC on the upper unit 100 side. It is a composition.

Due to this configuration, the microwave oscillator (magnetron 122) of the microwave heating device 120 and the antenna case 124 are installed in a series in a space from one side wall surface (right side surface) of the heating chamber 113 to the back surface side. Therefore, these devices can be built in the lower unit 200 having a narrow internal space.

Furthermore, in the sixth embodiment,
An upper unit 100 having an induction heating source 17 for heating an object to be heated and supported by kitchen furniture;
A lower unit 200 attached to the upper unit 100 and having a heating chamber 113 built-in,
A microwave heating device 120 that supplies microwaves to the heating chamber 113 and an oven heating device 140 that heats the heating chamber are arranged in the lower unit 200,
In the upper unit, a control device 90 that controls the induction heating source 17, a control device 105 that controls both the microwave heating device 120 and the oven heating device 140, and these two control devices (slave microcomputer) 90. , A control device MC (master microcomputer) MC that integrally controls 105,
The upper unit 100 includes a filter circuit board 55 that receives power from the commercial power supply 99, and a power supply circuit 55 (34, 36) that converts the power from the filter circuit board 55 into a specified power supply voltage.
The control device 105, the control device 90, and the integrated control device MC are supplied with low-voltage power generated by the power supply circuit 55 (34, 36) as a power source,
The inverter circuit 81 of the induction heating source 17, the microwave generation source 122 of the microwave heating device 120, the upper heater 163A and the lower heater 163B of the oven heating device 140 are the filter circuit 54 and the power supply circuit 55 ( 34, 36) and the electric power (200 V power source) distributed between the electric power source and the electric power source is applied.

With this configuration, the entire power supply configuration of the heating cooker 1 is simplified, and unnecessary noise propagation can be suppressed to ensure reliable operation.

Other embodiments.
In the case of a user (user) who does not need both the upper unit 100 and the lower unit 200 as described in the first to sixth embodiments, the upper unit 100 and the lower unit 200 are sold or installed in the kitchen furniture 2. The work will be separate. The lower unit 200 is set as an optional item, for example. In such a case, for example, if the packaging form for selling the upper unit 100 and the lower unit 200 as a set and the packaging form prepared for selling only the upper unit 100 are set separately, convenience at the time of sale is impaired. Never.

The cooking dish 162 described in the second embodiment may have a black ceramic coating on the entire surface thereof. Since the far infrared effect can be expected by such a ceramic coating, the food can be heated deep inside and delicious food can be prepared.

The induction heating circuit may employ various driving methods such as a half bridge circuit and a full bridge circuit depending on the form and number of the IH coils 17L and 17R. For example, full bridge circuits have been proposed in Japanese Patent No. 6130411 and Japanese Patent No. 6173623.
Further, the IH coil is not limited to the donut shape, but as shown in, for example, Japanese Patent No. 5538546, an annular main heating coil and the main heating coil are arranged close to both sides of the main heating coil. The induction heating unit may include a flat first sub-heating coil and a second sub-heating coil having a lateral width smaller than the radius of the main heating coil.

In the above description, the present invention has been described in the case of a heating cooker including two induction heating units as a representative example of the heating cooker 1. However, for example, one of the two induction heating units may be an infrared heater or a radiant heater. You may change to various radiant type electric heaters, such as a heater.

Of the processes described in the embodiments, all or part of the processes described as being automatically performed may be manually performed. Further, all or part of the processing described as being manually performed can be automatically performed by a known method.

Further, each circuit, component, and each constituent element of the device shown in the drawings are functionally conceptual, and may not necessarily be physically configured as illustrated. More specifically, the integrated control device MC, the microwave heating control unit 130, the heating chamber control unit 159, and the display unit drive circuit 63 described with reference to FIG. 15 can disperse and integrate the functions of these devices and circuits. The form is not limited to that shown in the drawings, and all or a part of the form can be functionally or physically distributed/integrated in arbitrary units according to the function or operating condition.

For example, part of the data and programs of the storage device MM and the storage device 90R shown in FIG. 15 may be held in an external recording medium (storage server or the like) instead of being held in the heating cooker 1. In this case, the heating cooker 1 acquires necessary data and program information by accessing an external recording medium (storage server).

More specifically, the operation programs of the integrated control device MC, the microwave heating control unit 130, the heating chamber control unit 159, and the display unit drive circuit 63 described with reference to FIG. If desired, it may be updated to an improved one. In this case, for example, the correction program may be obtained through the wireless communication unit 49.

The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The substantial scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

INDUSTRIAL APPLICABILITY The heating cooker and kitchen furniture according to the present invention can be widely used not only in kitchens of ordinary houses but also in kitchens of public facilities and shops.

DESCRIPTION OF SYMBOLS 1 Induction heating cooker 2 Kitchen furniture 2A Installation port 2B Front opening 2P Mouth edge top surface 3 Surface material 4 Surface material 5 Surface material 6 Surface material 7 Frame line 8 Wall 10 Main body 11 Inclination part 13 Heating chamber 13A Opening 14 Door 15 Top Plate 16 Upper case (upper case)
16A Flange 16B Rear Vertical Wall 16F Front Vertical Wall 16L Side Vertical Wall 16R Side Vertical Wall 16S Bottom Wall (Bottom)
17 induction heating source 17C coil base (coil support frame)
17CH arm 17L IH coil (induction heating coil)
17R IH coil (induction heating coil)
18 Opening 19 Exhaust Cover 20 Exhaust Port 21 Decorative Frame 22 Reinforcing Plate 23 Right Input Control Device 24 Left Input Control Device 25 Decorative Frame 26 Cushion Material 28 Power Switch Control Device 30 Central Display 31L Left Display 31R Right Display 32 Central Operation Substrate 33 Rectifier circuit 34 Power circuit A
35 Rectifier circuit 36 Power circuit B
37L drive circuit 37R drive circuit 40 input operation part 40L left operation part 40M central operation part 40R right operation part 41 operation board 42 board holder 43L input key 43M input key 43R input key 44L input key 44M input key 44R input key 45L input key 45M Input key 45R Input key 46L window 46R window 47 Input key 48 Infrared transmitter 49 Wireless communication unit (wireless communication module)
51 screw 51F screw 52 partition plate 52A exhaust window 53 exhaust port plate 53A through hole 54 filter circuit board 55 power circuit board 56 choke coil 57 transformer 58 capacitor 59 diode bridge circuit (diode module)
60 1st cooling fan 60A outlet 60C fan case 60M motor 60P drive circuit 61 2nd cooling fan 61A outlet 61C fan case 61M motor 61P drive circuit 62 cooling fan drive circuit 63 display drive circuit 64 vent hole 65 bottom plate
66 Magnetic shield ring 70 Cover 71 Support plate 72 Electric power control unit (demand control unit)
73 signal transmission part 74 drive circuit 75 DC power supply circuit 76 resonance capacitor 77a input current detection part 77b output current detection part 78a diode bridge 78b reactor 78c smoothing capacitor 79a IGBT
79b IGBT
79c Diode 79d Diode 80 Inverter Circuit Board 81 Inverter Circuit 81L Inverter Circuit 81R Inverter Circuit 82 Heat Sink 82F Radiating Fin 83 Power Control Switching Element 84 Vibration Sensing Device 85 Electric Component 90 Control Device 90R Storage Device 91 Power Supply Circuit 92 DC Power Supply Converter 93 Temperature detection circuit 94L Induction heating circuit 94R Induction heating circuit 95 Voice synthesizer 95S Speaker 96 Clock circuit 97 Main power switch 98 Main power switch operation button or operation key 99 Commercial power supply (commercial AC power supply)
100 Upper unit 101 Lower case (lower casing)
101B Back plate 101C Inclined part 101F Front plate 101H Body part 101M Cutout part (inspection port)
101U Bottom plate 101L Side vertical wall 101P Convex portion 101T Front horizontal wall 101R Side vertical wall 101N Through hole (engagement hole)
102 exhaust duct 102A internal passage 102B internal passage 102E end portion 103 step portion 104 cavity 105 control device 106 power cord 106A plug 110 main body 111 inclined portion 112 front cover 113 heating chamber 113A opening 113B rear wall (rear wall)
113T Recess 114 Door 115 Handle 116 Arm 117 Through hole (guide hole)
118 Connecting member (reinforcing member)
118H Through hole 118L Left vertical part 118M Central flat part 118P Recessed or convex part 118R Right vertical part 118TL Support piece 118TR Support piece 118N Through hole (engagement hole)
119 Cover plate 120 Microwave heating device 120P Power supply circuit section 121 Inverter circuit board 121A Inverter circuit (driving circuit)
122 Magnetron (Microwave source)
122A Oscillator 122H Heat Dissipator 123 Waveguide 124 Antenna Case 125 Antenna 126 Antenna Driving Motor 126A Rotating Axis 127 Power Supply Circuit Board 128 Third Cooling Fan (Front Cooling Fan)
129 Fourth cooling fan (rear side cooling fan)
130 Microwave heating control unit 131 Door open/close detection mechanism 132A Latch switch 132B Door switch 133 Monitor switch 134 pin 135 pin 136A Interlocking rod 136B Interlocking rod 137 Support plate 138A Communication port 138B Communication port 139 Closure detection unit 140 Oven heating device 141 Space ( Ceiling space)
142 space (side surface space)
143 Heat sink heat dissipation fins 144 Space 145 Receiving tray 146 Screws 147 Tableware 148 Screws (fixtures)
149 Extension spring 150 Case A
151 Case B
152B Inlet port 152F Inlet port 153 Duct 154 Case C
154A Lid 154B Main body 155 Exhaust fan 156 Intake hole 157 Sealing material 158 Non-contact temperature measuring part (infrared temperature measuring part)
159 Heating chamber control unit 160 Temperature sensor 161 Detection window 162 Cooking dish 163 Heater 163A Upper heater 163B Lower heater 164 Vent hole 165 Recess (intake duct)
166L Left partition plate 166R Right partition plate 167 Upper heat shield plate 168 Lower heat shield plate 169 Upper case 170 Lower case 171 Partition plate 172 Passage 173 Communication port 174 Communication port 176 Hinge 178A Relay 178B Relay 179B Fixing bracket 179 181 Cover 182 Relay 183 Screw 184 Sealing material 185 Radio wave sealing room 186 Screw 187 Screw 190 Frame 191 Cover 192 Inner frame 192W Viewing window (opening)
193 Inner seal frame 194 Choke chamber 195 Seal plate 196 Seal plate 197 Upper shield plate 198 Support metal fittings 198H Horizontal part 198R Fixed part 198V Vertical part 199 Wind direction plate 200 Lower unit 201 Inlet port AL Top plate exposed range BH depth dimension BT1 only Power supply (built-in battery)
CK IH coil installation space D6 Longitudinal direction maximum width dimension DP1 depth (dimension)
DP2 Dimensions F1 First air passage F2 Second air passage FI Inlet FO Outlet GP1 Air gap GP2 Air gap GP3 Air gap GP4 Air gap GP5L Air gap GP5R Air gap GP6 Air gap GP7 Air gap L2 G1 H1 line G1 H2 line G11 G2 line H1 Maximum height dimension HP1 First horizontal plane HP2 Second horizontal plane HV Effective height dimension HX Maximum height dimension LA Overhang dimension LB Overhang dimension LD Distance LF Exhaust port dimension LW Exhaust range MC Integrated control unit MM Memory unit N Heated Items RF1 Cooling air RF2 Cooling air RF3 Cooling air RF4 Cooling air RF5 Cooling air RF6 Cooling air W2 Maximum width W3 Maximum width W4 Maximum lateral width W5 Notch opening width WH Inner lateral width dimension (frontage dimension).

Claims (61)

It has a flat body with a top plate on which the object to be heated is placed,
Inside the main body, an IH coil that heats an object to be heated on the top plate, an inverter circuit board arranged below the coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. A cover; and a first cooling fan for introducing cooling air from the outside of the main body,
The first cooling fan has rotating blades that rotate about a vertical axis, and faces an inlet of a first air passage formed between the inverter circuit board and the cover,
The said 1st cooling fan supplies the 1st cooling air from the inlet in one end part of the said 1st air path toward the outlet in the other end part, The heating cooker characterized by the above-mentioned. It has a flat body with a top plate on which the object to be heated is placed,
Inside the main body, a left side IH coil and a right side IH coil, which are respectively arranged at two positions on the left and right sides for heating an object to be heated on the top plate, are common to these two IH coils, and An inverter circuit board disposed below the IH coils, a cover installed between the two IH coils and the inverter circuit board, and a cover installed on the left side wall surface of the main body and formed on the housing. A first cooling fan for introducing cooling air from the ventilation hole,
The cover is installed in series from the first cooling fan to the right side of the left IH coil.
The first cooling fan has rotating blades that rotate about a vertical axis, and faces an inlet of a first air passage formed between the inverter circuit board and the cover,
The first cooling fan supplies the first cooling air from the inlet at the left end of the first air passage toward the outlet at the right end,
An exhaust window is provided in the inner rear portion of the main body, where the first cooling air discharged from the first air passage is introduced after passing through the space above the cover,
The heating cooker, wherein a position where the exhaust window is formed is on the left side of a position of the outlet of the first air passage. It has a flat body with a top plate on which the object to be heated is placed,
An IH coil for heating an object to be heated on the top plate, an inverter circuit board disposed below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board inside the main body. A cover, a first cooling fan and a second cooling fan that introduce cooling air from the outside of the main body, and an input operation unit that receives a user's operation input,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan faces an inlet of a first air passage formed between the inverter circuit board and the cover, and the first cooling fan is provided at one end of the first air passage. A configuration for supplying the first cooling air from an inlet to an outlet at the other end,
The second cooking fan is located closer to the input operation unit than the first cooling fan, and supplies a second cooling air to the input operation unit. It has a flat body with a top plate on which the object to be heated is placed,
An IH coil for heating an object to be heated on the top plate, an inverter circuit board disposed below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board inside the main body. A cover, a first cooling fan that introduces cooling air from the outside of the main body, and a power supply circuit board that receives power from a commercial power supply to generate a necessary power supply,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan faces an inlet of a first air passage formed between the inverter circuit board and the cover, and the first cooling fan is provided at one end of the first air passage. A configuration in which the first cooling air is supplied from one inlet to the outlet at the other end,
The cooker, wherein the power supply circuit board is disposed on the opposite side of the first cooling fan with the cover interposed therebetween. It has a flat body with a top plate on which the object to be heated is placed,
An IH coil for heating an object to be heated on the top plate, an inverter circuit board disposed below the IH coil, and an IH coil installed between the IH coil and the inverter circuit board inside the main body. A cover, and a first cooling fan for introducing cooling air from the outside of the main body,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan has an intake port on a lower surface of a fan case, and has an outlet on a side surface for blowing cooling air,
A first air passage formed under the cover on a first horizontal plane that crosses the vertical center of the outlet, a heat sink arranged on the upper surface of the inverter circuit board, and an electric power attached to the heat sink. And a switching element for control, respectively,
A heating cooker characterized in that an exhaust window for exhausting air after passing through the IH coil is arranged on a second horizontal surface which is above the first horizontal surface. 5. The inverter circuit board is provided with, as one of the electric components, a power control switching element for controlling high frequency power, and a heat sink to which the switching element is attached. The cooking device according to. The inverter circuit board includes, as one of the electric components, a power control switching element that controls high frequency power, and a heat sink to which the switching element is attached.
The heat sink is provided in two rows in a direction along the flow of the first cooling air, and both side surfaces viewed in a cross section perpendicular to the direction in which the cooling air flows are inclined surfaces approaching each other toward the upper side. Yes,
The heating device according to claim 1, wherein the switching element is attached to the inclined surface of the heat sink. The heating cooker according to claim 1, wherein the first cooling fan is a centrifugal fan. The first cooling fan further has a fan case,
The periphery of the rotor is surrounded by the fan case,
The heating cooker according to any one of claims 1 to 5, wherein a suction port for introducing cooling air is formed on a bottom surface of the fan case. The first cooling fan further has a fan case,
The periphery of the rotor is surrounded by the fan case,
A suction port for introducing cooling air is formed on the bottom surface of the fan case,
The heating cooker according to any one of claims 1 to 5, wherein a ventilation hole is formed on a bottom surface of the main body at a position directly below the suction port. The input operation unit is installed long in the left-right direction on the front side of the main body,
The first cooling fan and the second cooling fan are arranged side by side in the front-rear direction so that the second cooling fan is located at the front side.
The heating cooker according to claim 3, wherein the outlet of the first cooling fan and the outlet of the second cooling fan are open in the same direction. The input operation unit is installed long in the left-right direction on the front side of the main body,
The first cooling fan and the second cooling fan are arranged side by side in the front-rear direction so that the second cooling fan is located at the front side.
The heating cooker according to claim 3, wherein the first cooling fan and the second cooling fan have the same shape. The center portion of the right IH coil is located on the right side of the outlet of the first air passage,
The heating cooker according to claim 2, wherein the right IH coil is installed on a coil base having a ventilation gap through which the first cooling air passes. Further, in front of the main body, there is further provided an input operation section that receives an operation input of a user in the left-right direction, and a second cooling fan that introduces cooling air from a ventilation hole formed in a wall surface of the main body. ,
The second cooling fan is located near the first cooling fan, and supplies a second cooling air different from the first cooling air to the input operation unit. The cooker described. An input operation unit for receiving an operation input of a user in order to determine an energization condition for the IH coil;
A second cooling fan that supplies a second cooling air to a second air passage below the input operation unit,
The input operation unit is installed long in the left-right direction on the front side of the main body,
The second cooling fan has a blowout port,
The first cooling fan and the second cooling fan are arranged side by side in the front-rear direction so that the second cooling fan is located at the front side.
The outlet of the first cooling fan and the outlet of the second cooling fan are located on the first horizontal plane,
The first cooling air blown from the air outlet of the first cooling fan and the second cooling air blown from the air outlet of the second cooling fan are discharged from the exhaust window. Item 5. A heating cooker according to item 5. Which is installed in kitchen furniture,
An upper unit having a first heating source for heating the object to be heated via a top plate on which the object to be heated is placed, and being supported by the kitchen furniture;
A lower unit that is installed below the upper unit and that includes a heating chamber whose front opening is openably and closably closed by a door;
The lower unit includes a microwave heating device that supplies microwaves to the heating chamber, an oven heating device that heats the heating chamber, and a cooling fan that cools the microwave heating device.
The microwave generation source of the microwave heating device is arranged along any one of the left and right side wall surfaces of the heating chamber, and the oscillating portion of the microwave generation source projects toward the back side of the heating chamber. Installed sideways,
On the back side of the heating chamber, a power supply port communicating with the inside of the heating chamber and an antenna case into which microwaves from the microwave generation source are introduced are provided,
In the antenna case, a rotatable antenna is arranged for propagating the microwave oscillated from the microwave generation source into the space in the heating chamber through the power supply port. Built-in combined heating cooker. Which is installed in kitchen furniture,
An upper unit having an induction heating source that heats the object to be heated through a top plate on which the object to be heated is placed, and an upper unit supported by the kitchen furniture,
A lower unit that is installed below the upper unit and that includes a heating chamber whose front opening is openably and closably closed by a door;
The lower unit is supplied with electric power from the upper unit and supplies a microwave to the heating chamber, a microwave heating device that heats the heating chamber, and a microwave heating device that cools the microwave heating device. For cooling fan,
The microwave generation source of the microwave heating device is arranged along one right side wall surface or one left side wall surface of the heating chamber, and the microwave generation source is laterally oriented so that the oscillating portion of the microwave generation source protrudes to the back side of the heating chamber. Installed in
An antenna case into which microwaves from the microwave source are introduced is provided on the back side of the heating chamber,
In the antenna case, there is a rotatable antenna for propagating the microwave oscillated from the microwave generation source into the space inside the heating chamber through a power supply port provided on the back surface of the heating chamber. Place and
The built-in type composite cooking device is characterized in that the induction heating source, the microwave heating device, the oven heating device, and the cooling fan are controlled in operation by an integrated control device on the upper unit side. The built-in type composite cooker according to claim 17, wherein the microwave heating device is supplied with electric power generated by a power supply circuit board inside the upper unit as a control power supply. 18. The built-in hybrid type according to claim 17, wherein the microwave heating device and the oven heating device are supplied with power generated by a power circuit board inside the upper unit as a power source for control. Heating cooker. The induction heating source includes an IH coil disposed below the top plate, and further includes an inverter circuit board that supplies high frequency power to the IH coil.
The built-in type composite cooker according to claim 17, wherein the inverter circuit board is configured to receive power from an upstream side of a power circuit board inside the upper unit. Further comprising an antenna driving motor for rotating the antenna,
The motor is arranged on the back side of the heating chamber,
The built-in type composite cooker according to claim 16 or 17, wherein a rotating shaft of the motor extends horizontally toward the heating chamber side. The built-in hybrid cooker according to claim 16 or 17, wherein the cooling fan cools an inverter circuit board that supplies high-frequency power to the microwave generation source. The cooling fan comprises two cooling fans,
One of the cooling fans cools an inverter circuit board that supplies high-frequency power to the microwave generation source, and the other cooling fan cools a heat radiation portion of the microwave generation source. The built-in type composite heating cooker according to claim 16 or 17. A ceiling space into which the cooling air after passing through the inverter circuit board is introduced is formed above the ceiling wall surface of the heating chamber in the lower unit,
A side surface space into which the cooling air that has passed through the heat radiation portion of the microwave generation source is introduced is formed outside the side wall surface of the heating chamber,
The cooling air supplied to the side surface space is introduced into the heating chamber,
Outside the heating chamber, there is further provided an exhaust duct whose opening at the terminal end communicates with the outside,
The cooling air introduced into the heating chamber flows into the exhaust duct from the heating chamber,
The built-in type composite cooker according to claim 23, wherein the cooling air introduced into the ceiling space flows into the exhaust duct. An exhaust duct is provided outside the heating chamber, the end opening of which communicates with the outside.
The exhaust duct includes a horizontal portion that communicates with the inside of the heating chamber, and a vertical portion that is continuous to the downstream side of the horizontal portion and that extends vertically and vertically penetrates the upper unit,
24. The built-in system according to claim 23, wherein cooling air after cooling the inverter circuit board and cooling air after cooling the heat radiation portion of the microwave generation source are discharged from the exhaust duct. Combined heating cooker. Which is installed in kitchen furniture,
An upper unit having an induction heating source that heats the object to be heated through a top plate on which the object to be heated is placed, and an upper unit supported by the kitchen furniture,
A lower unit that is installed below the upper unit and that includes a heating chamber whose front opening is openably and closably closed by a door;
The lower unit includes a microwave heating device that receives power from the upper unit and supplies microwaves to the heating chamber, and an oven heating device that heats the heating chamber,
The microwave heating device includes a microwave heating control unit, a microwave generation source, and a first inverter circuit board that supplies high-frequency power to the microwave generation source,
The oven heating device includes a heating chamber control unit,
The microwave generation source and the first inverter circuit board are arranged along one side wall surface of the heating chamber and apart from each other in the front-rear direction,
Below the first inverter circuit board and below the heat dissipation part of the microwave source, air is sucked from the outside of the lower unit, and the air is sucked into the first inverter circuit board and the heat dissipation part. A built-in type composite cooker characterized by arranging a front cooling fan and a rear cooling fan, which are individually supplied to each section. 27. The built-in type composite device according to claim 26, wherein an intake port is provided at a position below the first inverter circuit board and at a position below the heat dissipation part, respectively, in a lower part of the lower unit. Type cooker. 27. The built-in type composite cooker according to claim 26, wherein the microwave heating controller is supplied with electric power generated by a power supply circuit board inside the upper unit as a control power source. 27. The built-in type composite cooker according to claim 26, wherein the heating chamber controller is supplied with electric power generated by a power supply circuit board inside the upper unit as a control power source. The induction heating source has an IH coil disposed below the top plate,
Further comprising a second inverter circuit board for supplying high frequency power to the IH coil,
30. The built-in type composite cooker according to claim 28, wherein the second inverter circuit board is configured to receive power from an upstream side of the power supply circuit board. The operations of the induction heating source, the microwave heating device, the oven heating device, the front side cooling fan, and the rear side cooling fan are controlled by an integrated control device on the upper unit side. Item 26. The built-in type composite cooker according to Item 26. The induction heating source, the microwave heating device, the oven heating device, the front side cooling fan, the rear side cooling fan, the operation is controlled by the integrated control device on the upper unit side,
27. The built-in type composite device according to claim 26, wherein neither the front side cooling fan nor the rear side cooling fan is operated during a period in which the cooking is performed only by the induction heating source of the upper unit. Type cooker. The kitchen furniture includes a first heating source that heats the object to be heated through a top plate on which the object to be heated is placed, and a flat body whose top opening is closed by the top plate. An upper unit supported by
A heating chamber to which microwaves are supplied, and a lower unit containing a microwave source,
A connecting member that connects the upper unit and the lower unit,
The connecting member is installed in a state of being close to or in close contact with at least one side wall surface of the lower unit and at least one side wall surface of the upper unit, and is coupled to both the lower unit and the upper unit. Built-in type composite cooker characterized by having a configuration. The upper unit further has a box-shaped upper case constituting an outer shell,
34. The built-in type composite cooker according to claim 33, wherein the lower unit further has a box-shaped lower case that constitutes an outer shell. An upper end portion of the connecting member is fixed to at least one side wall surface of the upper case,
The built-in type composite cooker according to claim 34, wherein a lower end portion of the connecting member is fixed to at least one side wall surface of the lower case. The built-in type composite cooker according to claim 33, wherein the connecting member has a shape that covers a bottom surface and left and right sidewall surfaces of the lower unit in series. The connecting member is formed of a thin plate made of metal, and includes a left-right vertical portion fixed to a side surface of the lower unit with a screw, and a central flat portion connecting between lower end portions of the left-right vertical portion. 37. The built-in type composite cooker according to any one of claims 33 to 36, wherein: 34. The built-in type composite cooker according to claim 33, wherein the connecting member is connected to the upper unit and the lower unit with a detachable fixing tool. Further comprising a door that opens and closes the opening in the front part of the heating chamber,
The lower unit includes a hinge that rotatably supports the lower portion of the door, and a pair of arms that support the load of the door from left to right.
34. The built-in type composite cooker according to claim 33, wherein a side surface of the lower case corresponding to a connecting portion between the arm and the lower unit is covered with the connecting member. Further comprising a door that opens and closes the opening in the front part of the heating chamber,
The lower unit includes a hinge that rotatably supports a lower portion of the door, and a door opening/closing detection mechanism that includes a plurality of switches that detect opening/closing of the door,
On the side surface of the lower case corresponding to the arrangement portion of the plurality of switches, a notch is provided to enable inspection of the switches,
The outside of the notch is covered by the connecting member,
34. The built-in type composite cooking according to claim 33, wherein the connecting member opens the notch and exposes the switch when the connection between the lower unit and the upper unit is released. vessel. Further comprising a door that opens and closes the opening in the front part of the heating chamber,
In the lower unit, a hinge that rotatably supports the lower portion of the door, a door opening/closing detection mechanism including a plurality of switches that detect opening/closing of the door, and an arm that supports the load of the door from side to side. Equipped with
The door opening detection mechanism is arranged at a position outside the arm when viewed from the heating chamber,
On the side surface of the lower case corresponding to the arrangement portion of the plurality of switches, a notch is provided to enable inspection of the switches,
The outside of the notch is covered by the connecting member,
34. The built-in type composite cooking according to claim 33, wherein the connecting member opens the notch and exposes the switch when the connection between the lower unit and the upper unit is released. vessel. The upper unit has a box-shaped upper case constituting the outer shell,
At the upper end of the upper case has a flange extending in the horizontal direction,
The lower unit has a box-shaped lower case forming an outer shell, and an upper end of the connecting member is in proximity to or in contact with a lower surface of the flange in a state of being fixed to the upper case and the lower case. 34. The built-in type composite cooker according to claim 33, wherein a support piece is formed. The kitchen furniture includes a first heating source that heats the object to be heated through a top plate on which the object to be heated is placed, and a flat body whose top opening is closed by the top plate. An upper unit supported by
A heating chamber to which microwaves are supplied; and a lower unit having a microwave generation source built in a lower case,
The upper case constituting the outer shell of the main body and the lower case are each formed of a thin metal plate,
A lateral vertical wall extending in the vertical direction is formed at the peripheral edge of the upper case,
The lower case has an entire upper surface opened, and the upper unit and the lower unit are connected to each other in a state where the upper case is fitted inside the opening. Type cooker. The built-in hybrid cooker according to claim 43, wherein the microwave generation source is supplied with power generated by a power circuit board inside the upper unit as a power source for control. The lower unit further comprises an oven heating device for heating the heating chamber,
44. The built-in system according to claim 43, wherein the microwave generation source and the oven heating device are supplied with electric power generated by a power supply circuit board inside the upper unit as a power supply for control. Combined heating cooker. As the first heating source, IH coils 17L and 17R arranged below the top plate are provided,
Further comprising an inverter circuit board 80 for supplying high frequency power to the IH coil,
The built-in type composite cooker according to claim 43, wherein the inverter circuit board 80 is configured to receive power from an upstream side of a power supply circuit board 55 inside the upper unit 100. As the first heating source, an IH coil arranged below the top plate,
An inverter circuit board disposed below the IH coil and supplying high frequency power to the IH coil, a cover disposed between the IH coil and the inverter circuit board, inside the upper case; A first cooling fan for introducing cooling air from a ventilation hole formed on the wall surface of the upper case,
The first cooling fan has a rotary blade that rotates about a vertical axis,
The first cooling fan faces an inlet of a first ventilation passage formed between the inverter circuit board and the cover, and the first cooling fan is provided at one end of the first ventilation passage. The built-in type composite cooker according to claim 43, wherein cooling air is supplied from the inlet toward the outlet at the other end. An inverter circuit board that supplies high-frequency power to the microwave generation source in the lower case, and a front-side cooling fan that is below the inverter circuit board and that supplies cooling air to the inverter circuit board. 44. The built-in type composite device according to claim 43, wherein a rear side cooling fan that supplies cooling air to the heat radiating portion is disposed below the heat radiating portion of the microwave generation source. Type cooker. The lower case further comprises an oven heating device for heating the heating chamber,
The operation of the first heating source, the microwave generation source, the oven heating device, the front side cooling fan, and the rear side cooling fan is controlled by an integrated control device on the upper unit side. 49. The built-in type composite cooker according to claim 48. The lower case further comprises an oven heating device for heating the heating chamber,
The first heating source, the microwave generation source, the oven heating device, the front side cooling fan, the rear side cooling fan, the operation is controlled by the integrated control device on the upper unit side,
49. The built-in according to claim 48, wherein neither the front side cooling fan nor the rear side cooling fan is operated during a period in which heating cooking is performed only by the first heating source in the upper unit. Type composite cooker. A top plate on which the object to be heated is placed; an induction heating source that heats the object to be heated through the top plate; and a flat upper case whose upper surface has an opening closed by the top plate. And an upper unit supported by kitchen furniture,
A heating chamber to which microwaves are supplied; and a lower unit having a microwave heating device incorporated in a lower case,
A built-in type composite cooker, wherein a bottom wall of the upper case also serves as a ceiling surface of the lower case when the upper case is placed on the lower case. 52. The built-in type composite cooker according to claim 51, wherein the upper case is formed by connecting a plurality of metal thin plates into a box shape. 52. The built-in type composite heating cooker according to claim 51, wherein the lower case is formed by connecting a plurality of thin metal plates into a box shape. The upper case and the lower case are each formed in a box shape from a thin metal plate,
An opening is formed on an upper surface of the lower case, and the upper unit and the lower unit are integrally connected in a state where the upper case is fitted inside the opening. The built-in type composite cooker according to claim 51. When the upper case is fitted inside the opening of the lower case, a cavity is formed at a position behind the heating chamber between the bottom wall of the upper case and the bottom wall of the lower case. ,
The cavity contains at least one of a waveguide that constitutes a part of the microwave heating device, an antenna case, and a case that houses a power supply circuit board on which functional components of a microwave heating control unit are mounted. 52. The built-in type composite heating cooker according to claim 51, wherein: When the upper case is fitted inside the opening of the lower case, a cavity is formed at a position rearward of the heating chamber between the bottom wall of the upper case and the bottom wall of the lower case. ,
A waveguide that constitutes a part of the microwave heating device is accommodated in the cavity,
52. The built-in type composite heating cooker according to claim 51, wherein the waveguide is installed long in the left-right direction along the back surface of the heating chamber. When the upper case is fitted inside the opening of the lower case, a cavity is formed at a position rearward of the heating chamber between the bottom wall of the upper case and the bottom wall of the lower case. ,
A waveguide that constitutes a part of the microwave heating device is accommodated in the cavity,
The waveguide is installed long in the left-right direction along the back surface of the heating chamber,
52. A built-in combined-type cooking apparatus according to claim 51, wherein a case accommodating a power supply circuit board of the microwave heating device is installed behind the waveguide in the left-right direction. vessel. A top plate on which an object to be heated is placed; an induction heating source that heats the object to be heated through the top plate; and a flat upper case whose upper surface opening is closed by the top plate. And an upper unit supported by kitchen furniture,
A lower unit containing a heating chamber that is heated from above and from below by an upper heater and a lower heater,
The lower unit includes a lower case that forms an outer shell, a door that opens and closes the opening of the heating chamber, an arm that supports the door, and a door open/close detection mechanism,
The lower unit includes a microwave generation source on the right side or the left side of the heating chamber, and a case containing an inverter circuit board that supplies high-frequency power to the generation source,
The case is arranged on the front side of the microwave generation source,
Inside the lower unit, a space is provided on the front side of the case,
The arm and the door opening/closing detection mechanism are housed in the space in a state of being adjacent to each other and with the door opening/closing detection mechanism on the outside. .. The door opening/closing detection mechanism has a switch that is opened/closed according to opening/closing of the door,
A notch is provided on the side surface of the lower case corresponding to the switch arrangement portion to enable inspection of the switch,
The cover plate is detachably attached to the lower case so as to cover the outside of the notch,
59. The built-in type composite cooker according to claim 58, wherein the notch is opened and the switch is exposed when the cover plate is removed. Kitchen furniture having an installation port on the top surface, and the heating cooker according to any one of claims 1 to 5 being installed in the installation port. An installation port is provided on the upper surface, and the built-in composite heating cooker according to any one of claims 16, 17, 26, 33, 43, 51, and 58 is installed in the installation port. Kitchen furniture featuring.

Images