JP7055088B2 - Cookware and kitchen furniture - Google Patents

Description

The present invention relates to a cooking device for heating an object to be heated such as a pot placed on a top plate, and kitchen furniture such as a kitchen counter equipped with the cooking device.

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

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

Further, in the built-in induction heating cooker, there is one in which the heating cooker alone is installed in the storage space of the 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 are equipped with a grill chamber (also referred to as an "oven chamber" or "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 storage, a door provided on the front surface is opened, an object to be heated such as fish is inserted, the door is closed, and the grill can be heated by the 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”) to heat 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 that supply power to the IH coil are mounted. A cooling fan that cools the IH coil, a first cooling flow path that guides cooling air from the cooling fan to the vicinity of the inverter circuit board, and a second cooling flow path that guides cooling air from the cooling fan to the IH coil. And, in the second cooling flow path, 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 power to the inverter circuit is provided is provided. be.

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

Further, it has been proposed that the built-in induction heating cooker is configured by combining the upper unit and the lower unit. The upper unit contains a plurality of IH coils and an inverter circuit board that controls them, and the lower unit contains a grill and electrical components. The lower unit includes one fan motor and a cooling fan rotated by the fan motor, and the inverter circuit of the upper unit is provided by the blowing action of the cooling fan rotated by the fan motor. 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).

Further, in a built-in induction heating cooker, cooling air is introduced from the outside of the housing into a housing (also referred to as an "outer shell case") supported by kitchen furniture, and the cooling air is used for induction. A configuration has been proposed in which a drive circuit portion of a heating coil (hereinafter referred to as “IH coil”) and the IH coil are cooled diagonally (see, for example, Patent Document 5). This is a configuration adopted for the purpose of uniformly and efficiently cooling the drive circuit unit and the IH coil.

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

Furthermore, using two different heating methods (induction heating and dielectric heating), there are three types: 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 form can be selectively selected has also been proposed. However, this is also based on the premise of a "stationary type" in which the overall dimensions and shape of the cooking device can be determined much more freely (compared to the built-in type) (see Patent Document 8).

JP-A-2015-213628 (Page 5, FIG. 1) Japanese Unexamined Patent Publication No. 2008-53075 (Page 5, FIG. 8) Japanese Unexamined Patent Publication No. 5-251165 (Page 1, FIG. 2) Japanese Unexamined Patent Publication No. 11-87038 (Page 3, FIG. 1) Japanese Unexamined Patent Publication No. 5-21148 (Page 1, FIG. 2) Jikkai Sho 53-44345 (Page 1, Figure 2) Jitsukaisho 53-44346 (1st page, Fig. 3) Japanese Patent Application Laid-Open No. 52-37242 (Page 1, FIG. 1)

In the conventional built-in cooking cooker, the first problem is that the height dimension of the cooking cooker is large, and there is a problem in effectively utilizing the space in the kitchen furniture below the cooking cooker. Therefore, for example, it has led to the problem that the height of the goods storage cannot be increased.
On the other hand, in the stationary cooking cooker, if the height dimension of the cooking cooker is large as in the first problem above, when it is placed on a kitchen counter or the like, a heated object such as a pot may be placed on it. There was a problem that it was difficult to work when unloading or moving.

Further, there is a second problem that it is difficult to install the built-in type composite heating cooker using microwave heating in kitchen furniture such as a kitchen counter. That is, in the past, a heating chamber equipped with an electric heater (also referred to as a "grill storage") was provided, but a heating chamber using microwave heating has not been put into practical use. As a background to this, when microwaves are used, a microwave antenna typified by a magnetron, a cooling fan for cooling the antenna, a waveguide for guiding microwaves to the inside of the heating chamber, and microwaves are sent to the heating chamber. Important electrical parts such as diffusing antenna devices, structures, etc. are difficult to miniaturize due to the nature of handling microwaves, and measures such as prevention of microwave leakage are required.

Further, as a third problem, a built-in type composite cooking cooker (see Patent Document 2) including an upper unit provided with an induction heating source and a lower unit having a built-in heating chamber heated by radiant heat has been proposed. However, there is a big problem in adding a microwave heating function and improving it so that it can be used for a wider range of cooking. For example, since it is necessary to seal the heating chamber in terms of radio waves so that microwaves with properties different from those of the induction heating source and electric heater do not leak from the heating chamber, the induction heating cooking unit (upper part) that is temporarily supported by kitchen furniture. Unit) and a lower unit equipped with a heating chamber to which microwaves are supplied. In the installed state, it is necessary to maintain the performance and reliability of the built-in type combined heating cooker as a whole.

Further, a fourth problem is to obtain highly convenient kitchen furniture that can be widely used for 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 an object of the present invention is to provide a cooking device having a small outer shell case and a kitchen furniture provided with the cooking device.

The cooker of the first example related to the first task is
It has a flat body with a top plate on top on which the object to be heated is placed, and has a flat body.
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 IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. It is equipped with a cover and a first cooling fan that introduces cooling air from the outside of the main body.
The first cooling fan has a rotary blade that rotates about a vertical axis, and faces the inlet of the 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 second example cooker related to the first task is:
It has a flat body with a top plate on top on which the object to be heated is placed, and has a flat body.
Inside the main body, the left IH coil and the right IH coil, which are arranged at two locations on the left and right to heat the object to be heated on the top plate, are common to these two IH coils, and An inverter circuit board arranged below the IH coils, a cover installed between the two IH coils and the inverter circuit board, and a cover installed near the left wall surface of the main body and formed in the housing. Equipped with a first cooling fan that introduces cooling air from the ventilation holes,
The cover is installed in a series from the outlet of the first cooling fan to the right side of the IH coil on the left side.
The first cooling fan has a rotary blade that rotates about a vertical axis, and faces the inlet of the first air passage formed between the inverter circuit board and the cover.
The first cooling fan supplies cooling air from an inlet at the left end of the first air passage to an outlet at the right end.
An exhaust window is provided at the inner rear portion of the main body to introduce the cooling air from the first air passage after passing through the space above the cover.
The formation position of the exhaust window is characterized in that it is on the left side of the position of the outlet of the first air passage.

The cooking utensil of the invention related to the first problem is
It has a flat body with a top plate on top on which the object to be heated is placed, and has a flat body.
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 IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. It is provided with 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 an operation input of a user.
The first cooling fan has a rotary blade that rotates about a vertical axis.
The first cooling fan faces the inlet of the first air passage formed between the inverter circuit board and the cover, and the first cooling fan is located at one end of the first air passage. The configuration is such that the first cooling air is supplied from one inlet to the outlet at the other end.
The second cooling fan is located closer to the input operation unit than the first cooling fan, and supplies the second cooling air to 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 first cooling fan and the second cooling fan are installed side by side in the front-rear direction so that the second cooling fan is located on the front side.
The outlet of the first cooling fan and the outlet of the second cooling fan are configured to be open in the same direction from each other .

The cooking utensils of the other inventions related to the first problem are
It has a flat body with a top plate on top on which the object to be heated is placed, and has a flat body.
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 IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. It is provided with 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 an operation input of a user.
The first cooling fan has a rotary blade that rotates about a vertical axis.
The first cooling fan faces the inlet of the first air passage formed between the inverter circuit board and the cover, and the first cooling fan is located at one end of the first air passage. The configuration is such that the first cooling air is supplied from one inlet to the outlet at the other end.
The second cooling fan is located closer to the input operation unit than the first cooling fan, and supplies the second cooling air to 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 first cooling fan and the second cooling fan are installed side by side in the front-rear direction so that the second cooling fan is located on the front side.
The first cooling fan and the second cooling fan have the same shape as each other.

The cooking utensils of the other inventions related to the first problem are
It has a flat body with a top plate on top 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 IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. A cover, a first cooling fan that introduces cooling air from the outside of the main body, and
In order to determine the energization condition for the IH coil, an input operation unit that accepts the operation input of the user and an input operation unit.
A second cooling fan that supplies the second cooling air to the second air passage below the input operation unit is provided.
The first cooling fan has a rotary blade that rotates about a vertical axis.
The first cooling fan has an intake port on the lower surface of the fan case, and has an air outlet on the side surface for blowing cooling air.
A first air passage formed below the cover, a heat sink arranged on the upper surface of the inverter circuit board, and electric power attached to the heat sink on a first horizontal plane crossing the upper and lower center portions of the outlet. A control switching element and each are arranged,
An exhaust window for exhausting air after passing through the IH coil is arranged on the second horizontal plane above the first horizontal plane.
The input operation unit is installed long in the left-right direction on the front side of the main body.
The second cooling fan is provided with an outlet.
The first cooling fan and the second cooling fan are installed side by side in the front-rear direction so that the second cooling fan is located on 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 out from the outlet of the first cooling fan and the second cooling air blown out from the outlet of the second cooling fan are discharged from the exhaust window .

The built-in composite cooker of the sixth example related to the second task is
It is installed in the 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 supported by the kitchen furniture.
It comprises a lower unit, which is installed below the upper unit and has a heating chamber in which the front opening is openably 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 for cooling the microwave heating device.
The microwave generation source of the microwave heating device is arranged along one of the left and right side wall surfaces of the heating chamber, and the oscillating portion of the microwave generation source protrudes to the back surface side of the heating chamber. Installed sideways,
On the back side of the heating chamber, a feeding port leading to 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 rotating antenna for propagating the microwave oscillated from the microwave generation source to the space in the heating chamber through the feeding port is arranged.

The built-in composite cooker of the seventh example related to the second task is
It is installed in the kitchen furniture,
An upper unit having an induction heating source for heating the object to be heated via a top plate on which the object to be heated is placed and supported by the kitchen furniture.
It comprises a lower unit, which is installed below the upper unit and has a heating chamber in which the front opening is openably closed by a door.
The lower unit cools a microwave heating device that receives electric power from the upper unit and supplies microwaves to the heating chamber, an oven heating device that heats the heating chamber, and the microwave heating device. For cooling fan, equipped with,
The microwave generation source of the microwave heating device is arranged along one right side wall surface or left side wall surface of the heating chamber, and the oscillating portion of the microwave generation source is oriented sideways so as to project toward the back surface side of the heating chamber. Installed in
An antenna case into which microwaves from the microwave generation source are introduced is provided on the back side of the heating chamber.
In the antenna case, a rotated antenna for propagating the microwave oscillated from the microwave generation source to the space in the heating chamber via the feeding port provided on the back surface of the heating chamber is provided. Place and
The operation of the induction heating source, the microwave heating device, the oven heating device, and the cooling fan is controlled by an integrated control device on the upper unit side.

The built-in composite cooker of the eighth example related to the second task is
It is installed in the kitchen furniture,
An upper unit having an induction heating source for heating the object to be heated via a top plate on which the object to be heated is placed and supported by the kitchen furniture.
It comprises a lower unit, which is installed below the upper unit and has a heating chamber in which the front opening is openably closed by a door.
The lower unit includes a microwave heating device that receives electric 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 separated from each other in the front-rear direction.
Air is sucked from the outside of the lower unit below the first inverter circuit board and below the heat radiating portion of the microwave generation source, and the air is radiated to the first inverter circuit board and the heat radiating portion. It is a configuration in which a front cooling fan and a rear cooling fan that are individually supplied to the unit are arranged.

The built-in composite cooker of the ninth example related to the second task is
It has a first heating source that heats the object to be heated via a top plate on which the object to be heated is placed, and a flat body whose upper surface opening is closed by the top plate, and is a kitchen furniture. With the upper unit supported by
A heating chamber to which microwaves are supplied, a lower unit with a built-in microwave source, and
A connecting member for connecting the upper unit and the lower unit is provided.
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, respectively. It is a composition.

The tenth example of the built-in composite cooker related to the third task is
It has a first heating source that heats the object to be heated via a top plate on which the object to be heated is placed, and a flat body whose upper surface opening is closed by the top plate, and is a kitchen furniture. With the upper unit supported by
It is equipped with a heating chamber to which microwaves are supplied and a lower unit with a microwave generation source built in the lower case.
The upper case and the lower case constituting the outer shell of the main body are each formed of a thin metal plate.
A lateral vertical wall extending in the vertical direction is formed at the peripheral end of the upper case.
The lower case has an opening on the entire upper surface, 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.

The eleventh example of the built-in composite cooker related to the second task is
It has 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 in which the opening on the upper surface of the top plate is closed. And the upper unit supported by the kitchen furniture,
It is equipped with a heating chamber to which microwaves are supplied and a lower unit with a microwave heating device built into the lower case.
When the upper case is placed on the lower case, the bottom wall of the upper case also serves as the ceiling surface of the lower case.

The twelfth example of the built-in composite cooker related to the third task is
It has 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 in which the upper surface opening is closed by the top plate. The upper unit supported by the cage and kitchen furniture,
It is equipped with a lower unit with a built-in heating chamber that is heated from above and below by the upper heater and the lower heater, respectively.
The lower unit has a lower case constituting an outer shell, a door for opening and closing the opening of the heating chamber, an arm for supporting the door, and a door opening / closing detection mechanism.
The lower unit includes a microwave generation source and a case having an inverter circuit board that supplies high-frequency power to the generation source on the right side or the left side of the heating chamber.
The case is placed in front of the microwave 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 housed adjacent to each other so that the door open / close detection mechanism is on the outside.

The kitchen furniture of the thirteenth example related to the fourth problem has an installation port on the upper surface, and one of the first to fifth inventions is installed in the installation port. It is a configuration that is used.

The kitchen furniture of the fourteenth example related to the fourth problem has an installation port on the upper surface, and the built-in type composite heating according to any one of the sixth invention to the twelfth invention is provided in the installation port. It is configured to have a cooker installed.

According to the present invention, it is possible to provide a highly convenient cooking cooker, a composite induction heating cooker, and kitchen furniture that can reduce the installation space occupied by the cooking cooker or can handle various types of cooking.

It is a perspective view which shows the whole of the kitchen furniture in which the induction heating cooker 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 cooker shown in FIG. 1. It is a schematic diagram which shows the intermediate stage of the work of incorporating the induction heating cooker shown in FIG. 1 into the kitchen furniture. FIG. 3 is a schematic vertical sectional view showing a dimensional relationship between the kitchen furniture of FIG. 1 and an induction heating cooker. FIG. 3 is a schematic vertical sectional view showing an enlarged part of the front part of the kitchen furniture shown in FIG. It is a top view of the induction heating cooker shown in FIG. It is a vertical cross-sectional view when the induction heating cooker of FIG. 1 is cut along the line ZZ of FIG. It is a vertical cross-sectional view which showed the flow of the cooling air by cutting the induction heating cooker of FIG. 1 by the line ZZ of FIG. It is a vertical cross-sectional view when the induction heating cooker of FIG. 1 is cut along the WW line of FIG. It is a vertical cross-sectional view when the induction heating cooker of FIG. 1 is cut along the YY line of FIG. It is a vertical cross-sectional view when the induction heating cooker of FIG. 1 is cut by the VV line of FIG. It is a vertical cross-sectional view when the induction heating cooker of FIG. 1 is cut by the X-ray line of FIG. It is a simplified plan view for demonstrating the operation part of the upper unit of the induction heating cooker of FIG. It is a simplified cross-sectional view which shows the flow of the cooling air in the upper unit of the induction heating cooker of FIG. It is a block diagram which shows the main control-related part of the induction heating cooker of FIG. It is explanatory drawing which shows the main cooling air passage of the induction heating cooker 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 cooker of FIG. It is the flowchart 2 for demonstrating the control operation of the induction heating cooker of FIG. It is the flowchart 3 for demonstrating the control operation of the induction heating cooker of FIG. It is a flowchart 4 for demonstrating the control operation of the induction heating cooker of FIG. It is a flowchart 5 for demonstrating the control operation of the induction heating cooker of FIG. It is a flowchart 5 for demonstrating the control operation of the induction heating cooker of FIG. It is a list which shows the correspondence relationship between the cooling fan of the induction heating cooker of FIG. 1 and the type of cooking. It is a flowchart explaining the control operation at the time of performing the fried food cooking (automatic) which is one kind of induction heating cooking in the induction heating cooker of FIG. It is a perspective view of the state before installation in the kitchen furniture with the built-in type induction heating cooker which concerns on Embodiment 2 of this invention. It is a perspective view which shows the state which the door is opened in the induction heating cooker shown in FIG. It is a front view of the induction heating cooker shown in FIG. 26. It is a top view of the induction heating cooker shown in FIG. 26. FIG. 26 is a right side view of the induction heating cooker shown in FIG. 26. It is a left side view of the induction heating cooker shown in FIG. 26. It is a back view (rear surface) view of the induction heating cooker shown in FIG. 26. It is a bottom surface (bottom surface) view of the induction heating cooker shown in FIG. 26. FIG. 29 is a vertical sectional view taken along line ZZ of the induction heating cooker shown in FIG. 29. It is a YY line vertical sectional view of the induction heating cooker shown in FIG. 29. FIG. 29 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. 29 is a vertical 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 cooker shown in FIG. It is a perspective view of the upper unit with the top plate removed in the induction heating cooker shown in FIG. 26. FIG. 6 is a perspective view of an upper unit in an induction heating cooker shown in FIG. 26 with the top plate and the IH coil removed. FIG. 6 is a perspective view of an upper unit in an induction heating cooker shown in FIG. 26 with the top plate, the IH coil, and the cover removed. FIG. 41 is a reference perspective view showing the flow of cooling air. FIG. 26 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. 26. FIG. 26 is a plan view, a front view, a right side view, and a rear view of the upper unit shown in FIG. 26 in a state where both the top plate and the IH coil are removed. FIG. 26 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. It is a bottom surface (bottom surface) view of the upper unit of the induction heating cooker shown in FIG. 26. FIG. 43 is a vertical sectional view taken along line XX of the upper unit shown in FIG. 43. FIG. 43 is a vertical sectional view taken along line XX of the upper unit shown in FIG. 43. FIG. 43 is a vertical sectional view taken along line ZZ of the upper unit shown in FIG. 43. FIG. 1 is a perspective view showing a disassembled state of the induction heating cooker shown in FIG. 26. FIG. 2 is a perspective view showing a disassembled state of the induction heating cooker shown in FIG. 26. It is a perspective view of the connecting member (reinforcing member) of the induction heating cooker shown in FIG. 26. It is a perspective view which shows the disassembly middle stage of the lower unit of the induction heating cooker shown in FIG. It is sectional drawing explaining the main part of the lower unit of the induction heating cooker shown in FIG. 26. It is sectional drawing which showed the main part of the lower unit of the built-in type induction heating cooker which concerns on Embodiment 3 of this invention. FIG. 5 is a cross-sectional view illustrating a main part of the induction heating cooker shown in FIG. 55. It is a vertical sectional view explaining the whole of the built-in type induction heating cooker which concerns on Embodiment 4 of this invention. It is a vertical sectional view explaining the whole of the built-in type induction heating cooker which concerns on Embodiment 5 of this invention. It is a block diagram explaining the whole of the built-in type induction heating cooker which concerns on Embodiment 6 of this invention.

Embodiment 1.
1 to 25 show the built-in induction heating cooker according to the first embodiment. In the following description, unless there is a particular contradiction, it is simply referred to as a "cooker".
In each figure, the reference numeral RT indicates the right direction of the cooking device 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 a device 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, a heating source of 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, it may be in any form in which a heat generating member that becomes high temperature is arranged by an induction heating method, and the wall surface of the heating chamber is heated from the outside or the air in the heating chamber is heated by the heat generating member.

For example, in Japanese Patent Document, Japanese Patent Application Laid-Open No. 2017-74305 describes a cooking dish arranged in a heating chamber (grill storage) on which a food to be cooked is placed, and a second cooking plate for heating the food to be cooked from below. A heating cooker including a heating body (induction heating coil) and a third heating body (induction heating coil) for heating an object to be cooked from the side has been proposed.

Further, in Japanese Patent Application Laid-Open No. 2016-85996, an electric insulator is provided above and below the heating chamber, and an induction heating coil (IH coil) is provided in the space below the electric insulator. A configuration has been proposed in which the cooking plate placed on top is induced and heated. The cooking plate is made of a material that can be induced and heated, 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 done.

Further, as a typical example in which a heat generating member that becomes high temperature by an induction heating method is arranged, Japanese Patent Application Laid-Open No. 2005-071695 supplies a high frequency current to an IH coil to generate a high frequency magnetic flux in the IH coil. A high-frequency magnetic flux can be linked with a heater arranged in the heater to allow an induced current to flow in the heater, and the Joule heat generated by the electric resistance of the heater itself can be used to heat the cooked food in the heater. It has been disclosed.

Further, in Japanese Patent Application Laid-Open No. 2013-247048, a heater having a closed circuit is electrically arranged inside the heating chamber, and a high frequency magnetic flux generated from an IH coil arranged outside the heating chamber is chained to this heater. It has been proposed to mix and heat the heater to a high temperature to dissipate heat in the heating chamber. The heater referred to here electrically forms a closed circuit, and a round bar or round pipe made of stainless steel or high nickel alloy is bent into a predetermined shape, and both ends are joined to each other by welding or brazing. It was formed in an endless shape.

In the "IH coil" referred to in the first embodiment, as a typical example, about 30 thin copper wires or aluminum wires of about 0.1 mm to 0.3 mm are bundled, and a plurality of these bundles are twisted. It is configured by winding it in a spiral shape (for example, Japanese Patent Document 1, Japanese Patent Application Laid-Open No. 2012-79580).

Further, Japanese Patent Application Laid-Open No. 2018-32551 proposes an induction heating cooker using an annular conductor formed of a flat plate-shaped conductive material in an annular shape as a heating coil.
Any of these forms corresponds to an IH coil.

In the first embodiment, "cooperative cooking" means two types of heating in which the heating location for one object to be cooked (including food, meat, vegetables, etc.) is different and the heating operation conditions can be set independently. Cooking that uses a source.

The above-mentioned "cooperative 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 finished and preheating is performed, the object to be cooked is moved to another place, and at the place after the movement, the cooking is completed by heating with the IH coil 17L described later. The case is a kind of "cooperative cooking" here.

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

In FIGS. 1 to 25, the cooker 1 of the first embodiment is, for example, a cooker incorporated in kitchen furniture (including furniture called a system kitchen) 2 with a sink. 2A is an installation port formed in the kitchen furniture 2. As will be described later, 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 source 99.

As shown in FIGS. 1 and 13, the cooking cooker 1 of the first embodiment has two induction heating portions on the left and right. Circular position marks 17LS and 17RS are provided on the upper surface of the top plate 15 to indicate a desirable position on which a heated object such as a metal pot is placed. By looking at the circular position marks 17LS and 17RS, the user of the cooking cooker 1 can recognize that the cooking cooker 1 of the first embodiment has two induction heating portions on the left and right. The voice guide of the voice synthesizer 95, which will be described later, also allows the user to recognize that there are two induction heating portions on the left and right.

The position marks 17LS and 17RS are formed by printing. Immediately below the position marks 17LS and 17RS, induction heating coils (hereinafter referred to as "IH coils") 17L and 17R, which will be described later, are installed. The position marks 17LS and 17RS do not have to be circular, and for example, only the center point of a desirable position on which the object to be heated may be 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 reference positions that can be induced and heated 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 generically referred to as "induction heating sources". In this case, the reference numeral 17 is used. Therefore, when it is called an induction heating source 17, it may be either one of the IH coils 17L and 17R.

The heating cooker 1 is supported by being placed on the upper surface 2P of the mouth edge portion of the installation port 2A. As shown in FIG. 2, in the first embodiment, the kitchen furniture 2 is provided with a water tank 2C capable of temporarily storing water discharged from the water supply port 2D of the water supply. Reference numeral 2B is a front opening formed at a predetermined position of the kitchen furniture 2, and this front opening exposes the front constituent portions (door 114 and front cover 112 described later) of the cooking cooker 1 to the front when the cooker 1 is incorporated. It is for letting you.

If the size of the front opening 2B and the installation port 2A of the kitchen furniture 2 is standard, it is mostly pre-formed with standard dimensions because standardization is being promoted by the industry. be. This will be explained in detail later.

The usual method of incorporating the cooker 1 into the kitchen furniture 2 is as shown in FIG. FIG. 3 is a schematic view showing an intermediate stage of the work of incorporating into the kitchen furniture 2.
As shown in FIG. 3, the cooking cooker 1 is placed in the installation port 2A while the front side (front side) of the cooking cooker 1 is tilted downward, and then the rear side of the cooking cooker 1 is placed. Is lowered as shown by the solid arrow BD, the cooking cooker 1 is placed on the peripheral edge of the installation port 2A of the kitchen furniture 2.

After that, the screws are tightened to move (rotate) the fixing bracket (not shown) installed on the rear peripheral edge of the lower unit 100, which will be described later, and the fixing bracket is strongly pressed against the kitchen furniture 2. And the installation is completed. Since such an installation method has already been widely adopted, the detailed structure will not be described.

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 stacked one above the other, and such an integrated form is used. In the assembly work shown in FIG. 3, only the upper unit 100 is fixed to the kitchen furniture 2 with the screw. If the fixing bracket (not shown) is removed, the cooking cooker 1 can be taken out from the kitchen furniture 2. As a result, inspections and repairs can be performed outside the kitchen furniture 2 thereafter.

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

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

In FIG. 3, FIG. 8 is a wall that divides the inside of the kitchen furniture 2 into a plurality of rooms at the top and bottom, and the lower part of the wall is often used as a storage for kitchen utensils, food, and the like. Note that the wall 8 is not shown in FIG. Further, the wall 8 may be installed inside the kitchen furniture 2 so as to be removable.

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

The kitchen furniture 2 and the cooker 1 do not have to be designed by the same manufacturer. The kitchen furniture is manufactured and sold by the kitchen furniture such as a sink and the housing equipment supplier, and the cooker 1 is manufactured and sold by the home appliance manufacturer. In many cases, it is manufactured and sold.

In FIGS. 1 and 2, reference numeral 7 is 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 should be noted that a thin plate or tape made of a glossy metal may be attached to indicate 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 fixed on the surface of the kitchen furniture 2 and may not move at all.

By unifying the front color and surface morphology (pattern, glossiness, unevenness, etc.) of the four types of surface materials 3 to 6, the unified design feeling of 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 design, the front surface of the surface material 3 may also 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 of FIG. 1 and the cooking utensil 1. FIG. 5 is a schematic vertical cross-sectional view showing an enlarged part of the front part of the kitchen furniture 2 shown in FIG.

In Japan, kitchen furniture 2 etc. are being promoted to standardize (common) housing parts and materials by the "Long-term Use Housing Material Standardization Promotion Council" (abbreviation: Nagazumikyo).

According to the "Standards for long-term use materials" regarding the "IH cooking heater (built-in)" established by the "Chojukyo", the conditions that the countertop (kitchen furniture 2) to which the IH cooking heater is attached should be as follows. It is stipulated.
(1) The width dimension W1 of the installation port 2A is 560 mm to 564 mm. The dimension D1 in the front-rear direction shall be 460 mm to 464 mm.
(2) The height dimension C1 of the front lowering portion 2F shall be 40 mm or less.
(3) The depth (front-back direction) dimension D3 of the front lowering portion 2F shall be 45 mm or less.
(4) The ceiling depth (front-back direction) dimension D2 of the front lowering portion 2F shall be 58 mm to 70 mm.

Further, according to the above-mentioned "Standards for Long-term Use Members", the external dimensions of the built-in type 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 shall be 215 mm to 223 mm.

The cooking utensil 1 of the present invention is designed so as to satisfy the above various conditions.
In FIG. 4, A1 is a dimension in the front-rear direction of the top plate 15 described later, 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, and is 498 mm. A3 is a dimension in the front-rear direction from the inclined portion 111 formed at 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, which will be described later, and is formed inside the lower unit 200. On the front surface of the heating chamber 113, an opening 113A (see FIG. 10) is formed in which a cooking utensil such as a frying pan and an object to be cooked can be taken in and out. The opening 113A is openably covered by a door 114 (see FIG. 10).

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 surface of the front cover 112 except for the handle portion 115. It is supported freely.

In FIG. 4, H1 is the maximum height dimension of the cooking device 1. That is, the dimension from the upper 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 cooking device 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 cooking device 1. FIG. 7 is a vertical cross-sectional view of the cooking cooker 1 cut along the line ZZ of FIG. FIG. 8 is a vertical cross-sectional view showing the flow of cooling air obtained by cutting the cooking device 1 along the ZZ line of FIG. FIG. 9 is a vertical cross-sectional view of the cooking cooker 1 cut along the WW line of FIG. 7. FIG. 10 is a vertical cross-sectional view of the cooking cooker 1 cut along the YY line of FIG. FIG. 11 is a vertical cross-sectional view of the cooking cooker 1 cut along the line VV of FIG. 7. FIG. 12 is a vertical cross-sectional view of the cooking utensil 1 when it is cut by X-rays of FIG. 7. FIG. 13 is a simplified plan view for explaining an operation unit of the upper unit of the cooking device 1. FIG. 14 is a simplified cross-sectional view showing the flow of cooling air inside the upper unit 100 of the cooking device 1. FIG. 15 is a block diagram showing a main control-related part of the cooking device 1. FIG. 16 is an explanatory diagram showing a main cooling air passage of the induction heating cooker of FIG. FIG. 17 is a circuit diagram showing details of the inverter circuit of the induction heating cooker of FIG.

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

The upper unit 100 includes a box-shaped upper case (upper housing) 16 constituting the 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 superposed on the upper surface of the reinforcing plate 22 so as to cover substantially the entire upper surface thereof.

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

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

The top plate 15 is formed in a flat plate shape having a substantially uniform thickness as a whole, and the entire lower surface thereof is covered with a painted surface through which visible light does not pass. Therefore, the functional parts below the top plate 15, for example, the IH coils 17L and 17R, cannot be visually recognized from above the top plate 15.

The IH coil 17R has a donut-shaped planar shape. The maximum thermal power of this IH coil 17R is 3200 W. The maximum external dimension (diameter) is 168 mm.

The other IH coil 17L also has a donut-like shape. The maximum thermal power of this IH coil 17L is 3200W. The maximum external dimension (diameter) is 168 mm. It may be expanded to about 180 mm so that it can be used for objects to be heated such as large pots and frying pans.

18 is a horizontally long opening (see FIG. 7) formed at the rear of the upper case 16, and 19 is an exhaust cover installed above this opening, which is a shutter or a large number of penetrations for ventilation. A hole is formed. Reference numeral 20 is 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 end portion of the rear portion of the upper case 16. The reinforcing plate 22 has a length equivalent to the width of the trailing 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 to be longer than the width of the upper case 16. That is, when viewed from above, it seems that the rear side of the exhaust cover 19 and both the left and right sides are surrounded in a 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 faces of the top plate 15 from an external impact as shown in FIG.
Reference numeral 26 denotes an annular cushion material made of a highly elastic material such as silicon rubber, which is attached to the entire lower surface 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. It should be noted that the design may be such that the three parts (sides) of the left and right end faces and the front end face of the top plate 15 or the four parts (peripheral four sides) including the rear end face are surrounded by one decorative frame 25.

In FIGS. 6 and 13, 30, 31L and 31R are display units, respectively. Reference numeral 30 is 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 unit, and 31R is a right side display unit. These left and right display units 31L and 31R are also installed on the left side of the front portion of the top plate 15 and below the right side.

The display units 30, 31L, and 31R are mainly composed of a liquid crystal display screen (not shown), and the display units 30, 31L, and 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 painted surface that blocks visible light as described above, corresponding to the positions directly above the display units 30, 31L, and 31R. Therefore, the display contents of the display units 30, 31L, and 31R can be visually recognized from above the top plate 15.

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

The left side display unit 31L displays information and alarms 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, 40 is an input operation unit. The input operation unit 40 is arranged laterally long along the front end edge portion of the top plate 15 behind the front portion 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 band shape.

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

Below the operation board 41, flat plate-shaped auxiliary support plates (not shown) are installed so as to overlap each other so as to face the operation board 41 with a gap. That is, it has a structure of two upper and lower layers (two sheets) facing each other at intervals, so that as many electric components and circuits as possible can be mounted.

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

In FIG. 7, reference numeral 16B is a rear vertical wall of the upper case 16. The lower case 101 and the upper case 16, which will be described later, are integrated with screws 51 at a plurality of places.

As is clear from FIG. 7, the rear vertical wall 16B of the upper case 16 and the lower case 101 face each other closely 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 flat 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 of the lower unit 200, which will be described later. BH indicates the depth (vertical) dimension of the cavity 104.

As is clear from the structure shown in FIG. 7, the first embodiment has a flat upper case 16 in which the opening on the upper surface 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 having the largest facing distance between the bottom wall 16S of the upper case 16 and the bottom plate 101U of the lower case 101 is the cavity 104.
In the cavity 104, a waveguide 123 constituting a part of the microwave heating device 120 described later is arranged long in the left-right direction behind the heating chamber 113.
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 control unit 130 is mainly composed of a microcomputer, and is mounted on the power supply circuit board 127 inside the case C154. In other words, the power supply circuit board 127 housed inside the case C also serves as a control board on which the microwave heating control unit 130 is mounted. Although such a control board and a power supply circuit board 127 may be provided separately, 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 fitting for connection 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 metal fitting 198 and the front vertical wall 16F of the upper case 16 face each other closely within a range of about 20 mm to 39 mm, and the facing portion is fixed by a screw 51F (not shown). There is. Note that the screw 51F is 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 two box-shaped structures. In other words, since the external dimensions of the box-shaped upper case 16 are slightly smaller than the inner dimensions of the lower case 101, the upper case 16 is fitted into the lower case 101 in a range (depth) of about 20 mm to 30 mm. It fits. Instead of the screws 51 and 51F, other fastening means such as bolts and nuts may be used.

Even if the upper case 16 and the lower case 101 are made of a thin metal plate so as to be light, the fact that they are one strong box-shaped structure prevents microwave leakage in the part of the door 114 described later. It is beneficial to.

In particular, the top plate 15 of the upper unit 100 is supported by the upper surface of the kitchen furniture 2 and receives the full load of the lower unit 200, so that the upper case 16 and the lower case 101 as a whole are not distorted or deformed. Is important. Since the cushion 26 is attached to the entire circumference of the lower surfaces of the decorative frames 21 and 25, it is the cushion material 26 that actually contacts the upper surface of the lower part 2 of the kitchen.

In FIG. 7, reference numeral 80 denotes an inverter circuit board, which is installed in the central portion of the upper case 16. The inverter circuit board 80 is a rectangle whose planar shape 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 that supplies high-frequency power to the right IH coil 17R. It is composed of a circuit 81R and. These will be described later with reference to FIG.

A total of four aluminum heat sinks (heat sinks) 82 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 so as to face each other.

As can be seen from FIG. 7, the heat sink (heat dissipation sink) 82 has a power control switching element that constitutes a part of the inverter circuits 81L and 81R on inclined surfaces on opposite sides to each other. 83 is attached. Therefore, the heat generated during the operation of the electronic component 83 can be cooled by the cooling air passing around the heat radiation fin 82F.

The power control switching element 83 is, for example, an IGBT (insulated gate bipolar transistor). The power control switching element 83 on the one side of the inverter circuit 81L is on the rear side of the heat sink 82 having two rows of front and rear, and the power control switching element 83 on the other side of the inverter circuit 81R is on the front side of the heat sink 82 having two rows of front and rear. It is attached to the side. It may be attached to the opposite side.

In FIG. 7, reference numeral 70 denotes a cover made of a thin metal plate or a plastic material that covers the entire upper part of the inverter circuit board 80. The left and right end faces of the cover 70 are open, and as shown in FIG. 14, the left end surface side of the cover 70 serves as the inlet FI of the cooling air RF1 described later, and the right end surface side of the cover 70 serves the outlet FO of the cooling air RF1. Configure.

The cover 70 is located at a position where a constant gap is secured between the IH coil 17L and 17R at the lowermost surface, and is of a size which secures a constant gap with the uppermost surface of the heat sink 82.

Since the cover 70 is directly below the IH coil 17L and is in close proximity to the cover 70, if the cover 70 is expected to have a magnetic shielding effect, the cover is made of a metal such as aluminum, and the upper case is further formed. It is even better to connect to 16 electrically. For example, a screw (not shown) for attaching the cover 70 is set to reach the screw hole of the cover 70 directly. Since the upper case 16 is connected to the lower case 101, which will be described later, with a metal screw or the like, it is electrically connected to the ground terminal (not shown) provided in the lower case 101, and noise is absorbed by the ground. Ru. By doing so, the magnetic shield 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.

Further, if the cover 70 is injection-molded from a plastic material, the cross-sectional shape of the cover 70 can be determined relatively freely. 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 by an electrically insulating heat-resistant component called a coil base 17C (not shown) from below so that the distance from the top plate 15 is the same, but the structure is detailed. The explanation is omitted. As described above, the IH coils 17L and 17R are on one horizontal line (second horizontal line HL2). In other words, it exists on one plane (second horizontal plane HL2) determined by the second horizon (see FIG. 9).

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

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

In FIGS. 7 and 10, 102 is a metal exhaust duct to which the exhaust flow from the lower unit 200 is guided. The exhaust port side end portion 102E of the exhaust duct 102 penetrates through the gap GP1 formed between the partition plate 52 described later and the rear vertical wall 16B of the upper case 16.

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

In the upper case 16 and the lower case 101, the flange 16A described above overlaps the flange 101A. In this polymerization state, the side wall surface of the upper case 16 and the side wall surface of the lower case 101 are fixed with 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 integrated. Then, it can be made into a box-shaped structure with mechanical strength.

The connection between the flange 16A and the flange 101A may be not a screw but another fastening means such as a bolt and a nut. The flange 16A and the flange 101A do not come into contact with 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 in a compressed state. If the cushion material 26 is not in close contact with the cushion material 26, there is a concern that the effect of preventing the 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 rotation axis (not shown) at the center of the rotary blades (not shown) of the first cooling fan 60 and the second cooling fan 61 extends in the vertical (vertical) direction, and the rotary blade has 1 Rotate on one horizontal plane (first horizontal plane HP1).

A centrifugal fan (blower) is 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 a space with a high mounting density. In general, there is also a type of centrifugal fan in which one suction port is provided and the blowing (sending) direction is the entire radial direction. However, the one of the first embodiment is a type having only one blowing direction.

60A is an outlet formed integrally with the fan case 60C of the first cooling fan 60, and 61A is an outlet formed integrally with the fan case 61C of the second cooling fan 61. The outlet 60A is directed to the inverter circuit board 80. Further, the outlet 61A is directed toward the holder 42 below the operation board 41. That is, the two outlets 60A and 61A are both present on a 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, for example, a plastic material. The holder 42 has a size corresponding to the entire area of the input operation unit 40 and the range of the center display unit 30, the right side display unit 31R, and the left side display unit 31L, and is provided in a long strip 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 specifications", and are operated at the same rotation speed during normal induction heating operation, but are operated by the control device 90. The amount of air blown may change. For example, when the driving power applied to the IH coils 17L and 17R is increased to increase the heating capacity, or when it is detected that the temperature of the central display unit 30 or the input operation unit 40 is higher than in normal times. In order to increase the cooling effect, the number of revolutions may be increased to increase the amount of air blown.

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

The first cooling fan 60 and the second cooling fan 61 have a configuration in which a rotary blade (not shown) is surrounded by fan cases 60C and 61C, and a circular suction port (not shown) is formed on the lower surface of the fan case. Not shown) is provided.

Vent holes 64 (FIG.) composed of a large number of round holes or elliptical holes at positions of the first cooling fan 60 and the second cooling fan 61 directly below the suction ports (not shown). 9). The ventilation holes 64 are formed on the bottom wall surface of the lower case 16. The ventilation holes 64 communicate with the ventilation holes 164 formed on the left side wall surface of the lower case 101, which will be 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, 165 is a recess (intake duct), and the ventilation hole 64 is provided to directly communicate with the ventilation hole 164 of the lower case 101. The recess 165 is formed by recessing it by a certain depth (dimension) DP1 from the left side. The dimension DP1 is 99 mm.

As shown in FIG. 9, an electric component mounted on 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 upper surface of the power supply circuit board 55 described later. The vertical center point of 85 is at the position of one horizontal line HL1. In other words, the cooling air RF1 blown out from the outlet 60A of the first cooling fan 60 is in a positional relationship so as to reach the heat sink 82 and the electric component 85 when traveling straight to the right. The horizontal plane determined by the horizontal line HL1 is hereinafter referred to as "first horizontal plane" HP1.

AC power from the commercial AC power supply 99 is supplied to the power supply circuit board 55 via the filter circuit board 54 described later. Then, in the power supply circuit board 55, alternating current is converted to direct current. Therefore, an electric component 85 such as a diode for converting alternating current to direct current 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 induction heating reduces the heating amount of the IH coils 17L and 17R. In addition to this operation, the amount of air blown per unit time of the first cooling fan 60 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.

When the first cooling fan 60 and the second cooling fan 61 have exactly the same structure, the same shape, and the same rated specifications, the procurement cost at the time of manufacturing can be reduced. If cooling fans with the same specifications are arranged and operated in parallel, there is a high possibility that a roaring noise will be generated. Therefore, as a countermeasure against the roaring noise, the rotation speeds of the first cooling fan 60 and the second cooling fan 61 are set to different values. It is controlled so that it becomes.

In FIG. 14, reference numeral 52 denotes a metal partition plate formed long to the left and right at the rear portion of the upper case 16, and is fixed to the upper case 16. The partition plate 52 is a wall extending vertically so as to partition the internal space of the upper case 16 in the front-rear direction. It should be noted that the term "partitioning" here does not mean a strict shielding that completely blocks the flow of air. The cooling air from the first cooling fan 60 and the second cooling fan 61 may be prevented from flowing backward to some extent beyond the upper end surface of the partition plate 52.

In FIG. 14, 52A is an exhaust window formed in the left half of the partition plate 52, and 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 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 cooking device 1 through the exhaust cover 19.

In FIG. 14, LF is an exhaust port dimension indicating a range (horizontal width dimension) of 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 width dimension of the exhaust window 52. If the width dimension of the exhaust window 52 is narrower than the formation range of the through hole 53A (the form shown in FIG. 14), the exhaust range LF is determined by the width dimension of the exhaust window 52.

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

The power supply 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 to the right 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 rotation centers of the rotary blades (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 a straight line in the front-rear direction.

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

RF3 indicates the cooling air after exiting from the outlet FO of the first air passage F1. Further, RF4 indicates the cooling air after passing through the second air passage F2. A part of the cooling air RF3 after exiting from the outlet FO and the cooling air RF4 after passing through the second air passage F2 merge in the middle. That is, a part of the cooling air RF1 and the cooling air RF2 merge before reaching the through hole 53A of the exhaust port plate 53.

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 upper surface of the top plate 15, and as described below, input is performed by utilizing a change in capacitance when the user lightly touches the top plate 15 with a finger or the like. Various input keys that can be used are arranged in a straight line in the horizontal direction.

The input operation unit 40 includes a right operation unit 40R, a center operation unit 40M, and a left operation unit 40L. Reference numeral 98 is an operation button or operation key (touch input type) of the main power switch 97 capable of supplying and shutting off the commercial power supply 99 to the integrated control device MC described later.

The main power switch 97 is attached to the filter board 54 of the upper unit 100 as shown in FIGS. 14 and 15. The commercial power supply 99 is supplied to the power supply circuit board 55, the inverter circuit 81, and the power supply circuit unit (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 commanding the start and stop of operation of the right IH coil 17R and other energization conditions (time, thermal power, etc.).

The 44R is a touch-type input key for selecting a "control menu" for 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 as shown in FIG. 19, for example, boiling, boiling, fried food (automatic cooking), and the like.

The 45R is a touch-type input key that can command the start and stop of the operation of the right IH coil 17R. 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 determines the heating conditions. , Automatically switches to an input key that can command the start of the induction heating operation. However, the function of such an input key may not be switched, and the heating operation may always be started and stopped by the input key 45R.

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) at the time of induction heating, the induction heating time, the control mode of induction heating, and the like. The operation unit 43L on the left side is for commanding the start and stop of operation of the IH coil 17L on the left side and other energization conditions (time, thermal power, etc.).

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

45L is a touch-type input key that can command 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, etc. are selected, any one of the input keys 43L or 44L determines the heating conditions and the induction heating operation. Automatically switches to an input key that can command the start of. However, the function of such an input key may not be switched, and the heating operation may always be started and stopped by the input key 45L.

Two touch-type input keys 43M are arranged in the central operation unit 40M. These input keys 43M are assigned one or more input functions. For example, the heating 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 commanding the start and stop of both the microwave heating and the electric radiant heating in the lower unit 200, and other energization conditions (time, thermal power, etc.).

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

When the microwave output, the thermal power (power consumption) of electric radiant heating, the heating time, the heating pattern, etc. are selected, any one of the input keys 43M or 44M determines the heating conditions and heats them. It automatically switches to an input key that can command the start of operation.

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

Immediately after starting at least one of the operations of microwave heating and electric radiant heating, if the input key 45M is pressed, the heating operation is immediately stopped.

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

In FIG. 13, 47 is a touch-type input key for an Internet connection command that requests wireless communication from the integrated control device MC. The 46L and 46R are windows for transmitting an infrared signal 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) and a transmission / reception circuit (not shown) that receive radio waves from the outside and transmit radio waves to the outside. The wireless communication unit 49 is installed below the right end of the display board 41 at 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, the 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 that is opened and closed by the user, and is connected to a 200 V commercial power supply 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 via the main power supply switch 97, and reference numeral 92 is a direct current power conversion unit for converting AC power from a commercial power source into direct current. The power supply circuit 91 is mounted on the power supply circuit board 55.

The MC is an integrated control device and has the function of a main controller or a host computer. It is a control device mainly composed of a microcomputer. A predetermined constant pressure current is supplied to the integrated control device MC from the power supply circuit 91. Further, 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 unit, an output unit, a storage unit, and a CPU (arithmetic control unit), and the storage unit stores the energization control programs of the three heating sources in advance. It is (stored). Further, apart from the storage unit (ROM, RAM) of the microcomputer, a large-capacity storage device (main memory) MM for recording abnormality monitoring information is built in.

Reference numeral 90 denotes a control device that controls control during induction heating, and is mainly composed of a microcomputer. The control device 90 stores (stores) in advance an energization control program corresponding to various cooking menus at the time of induction heating. It also has a built-in storage device (not shown) that records abnormality monitoring information.

A second control device 90A (not shown) may be in charge of a part of the function of the control device 90. For example, a microcomputer may be mounted on the inverter circuit board 80, and the microcomputer may be in charge of input and output control of the inverter circuits 81L and 81R.

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

Reference numeral 96 denotes a clock circuit also called a real-time clock, which is supplied with power from a dedicated power supply (built-in battery) BT1 different from the power supply circuit 91 connected to the main power supply switch 97 and is driven for a long period of time. It has become so. This may be, for example, a radio-controlled clock, which always informs the current date and the exact time in seconds if requested by the integrated control device MC, and is set to the correct date and time at the manufacturing stage of this cooking cooker 1. There is. Therefore, even if the main power of the cooking cooker 1 is turned off and then 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 stored at the same time with an accurate time.

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

Generally, the "demand control device" or "demand control device" is a device that controls the value of demand (power demand), automatically checks the power usage status, and if it is likely to exceed the set value. If you set the automatic stop of the device that can be stopped by notifying with an alarm etc., the device itself will automatically stop the electric device that can be stopped as determined, and after a certain period of time, the electricity will be stopped. It is known to automatically restore the equipment, and it is said that it will be very effective in managing the contracted power with the power company in each household.

The electric power control unit 72 of the first embodiment is provided so that the cooking cooker 1 itself has the above-mentioned power consumption suppressing function. The power control unit 72 may be provided as a control function in the integrated control device MC without providing special hardware, and a control program for demand may be incorporated in the integrated control device MC from the beginning, or may be provided. It can be realized even if it is added later.

The power control unit 72 of the first embodiment can set the maximum power consumption of the entire cooking cooker 1 from three stages (5800W, 4800W, 4000W). It should be noted that this setting can be set in the input operation unit 40 while observing the above-mentioned three-step numerical value displayed on the central display unit 30 when a plurality of specific keys in the input operation unit 40 are pressed at the same time. .. 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, signal lines and connectors that can transmit signals by wire are applicable. Further, for example, an infrared communication unit may be used so that signals can be exchanged wirelessly. The signal transmission unit 73 is also provided between the integrated control device MC and the control device 90.

Reference numeral 84 denotes a vibration sensing device that detects shaking when an earthquake occurs. When a predetermined seismic intensity (acceleration) or higher is detected, a vibration sensing 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 supply of all the heating means in use is shut 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, although the central display unit 30 is composed of a liquid crystal display substrate, it is relatively sensitive to heat, so 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, it is determined by the control device 90 as an "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 condition).

In this abnormal preliminary state, the induction heating operation does not stop immediately, but is improved by increasing the blowing capacity of the motor 61M of the second cooling fan 61 cooling the IH coil installation space CK of the upper unit 100. However, when the temperature exceeds 65 ° C., the abnormal state is determined by the control device 90, and the induction heating operation is immediately stopped. Specifically, for example, when the driven IH coil is the right side 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 and the capacitor for resonance is stopped. Note that 94L is an induction heating circuit for the left IH coil 17L.

Then, at least, the state of change in electrical and physical (as an example, the temperature of the central display unit 30 described above) at the time of induction heating during 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 above-mentioned abnormal preliminary state, the induction heating operation does not stop immediately, and the ventilation capacity 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 thermal power of 17R 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 start command is received from the integrated control device MC until the cooking is normally completed. Therefore, the above-mentioned "control menu" (for example, "boiler", "simmered", "fried food", etc.) and information on the thermal power of induction heating are also recorded in chronological order. If an emergency stop occurs due to an abnormal state on the way, the abnormality monitoring information will be stored in the storage device 90R up to that point.

Further, in the first embodiment, in order to monitor the operation of the cooking cooker 1 over a wider range and acquire data, after turning on the main power switch 97, all the heating on the upper unit 100 and the lower unit 200 side is performed. The integrated control device MC has acquired the monitoring information regarding the cooking state. The integrated control device MC acquires monitoring information for the presence or 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 IH coil 17R on the right side and an inverter circuit 81L dedicated to the IH coil 17L on the left side are mounted one by one.

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

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 synthesizer that synthesizes electronically created voice, and the speaker 95S notifies the user of operations and notification when an abnormality occurs 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 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 they are used alone or in combination.

Of the temperature sensors TS3 to TS9, the two temperature sensors TS3 and TS5 are non-contact sensors such as infrared sensors, and as shown in FIG. 13, the gaps of the IH coils 17L and 17R are respectively. It is arranged in and receives an infrared signal from the top plate 15 direction. That is, this makes it possible to measure the temperature of the bottom surface of the pot or futaipan that is the object to be heated.

Of the temperature sensors TS3 to TS9, two temperature sensors TS4 and TS6 use a thermistor as a contact type sensor, and as shown in FIG. 13, the central portion of each of the IH coils 17L and 17R. It is placed in a 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. This makes it possible to measure the temperature of the top plate 15.

One of the temperature sensors TS3 to TS9, the temperature sensor TS7 (see FIG. 13), uses a thermistor as a contact type sensor and is installed on the upper surface of the holder 42. Then, the atmospheric 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 the heat sink 82 described later.

The lower unit 200 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 the 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 of the first cooling fan 60 and the second cooling fan 61. That is, the ventilation capacities of the first cooling fan 60 and the second cooling fan 61 are independently changed from each other in multiple stages by the control by the cooling fan drive circuit 62.

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

Reference numeral 84 denotes a vibration sensing device that detects shaking when an earthquake occurs. When a predetermined seismic intensity (acceleration) or higher is detected, a vibration sensing 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 supply of all the heating means in use is shut off instantly.

Reference numeral 49 denotes a wireless communication unit 49, which transmits information in response to a command from the integrated control device MC. In addition, information from the outside is acquired 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 when cut along the line ZZ of FIG. FIG. 8 is a vertical cross-sectional view showing the flow of cooling air obtained by cutting the induction heating cooker of FIG. 1 along the line ZZ of FIG. FIG. 9 is a vertical cross-sectional view of the induction heating cooker of FIG. 1 when cut along the WW line of FIG. 7.

In FIGS. 7 to 9, 101 is a lower case (lower housing) constituting the outer shell of the main body 110 of the lower unit 200. The lower case 101 is formed by pressing a thin metal plate such as a galvanized steel plate, or by joining a plurality of thin metal plates by spot welding or screws. The first embodiment is composed of three thin metal plates as described below.

101H is a body portion that constitutes three surfaces of the rear surface and the left and right portions of the lower case 101, and 101U is a flat plate-shaped bottom plate that completely closes the bottom opening of the body portion. 101C is an inclined portion, and is a wall surface inclined forward as it goes downward so as not to hit the installation port 2A of the kitchen furniture 2 when the cooking cooker 1 is installed in the kitchen furniture 2. The 101F is a front plate constituting the front surface of the lower case 101, and is a flat plate as a whole. The front surface of the front plate 101F is brought into close contact with 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 heating sources. One of them is a microwave heating device 120, and the other is an oven heating device 140. The oven heating device 140 heats the heating chamber (oven storage) 113 from the outside, but may also heat the heating chamber 113 from the inside.

7, 9, and 10 show the main parts 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 the inverter circuit 121A (see FIG. 15) is mounted is arranged on the frontmost side.

Behind the inverter circuit board 121, a magnetron 122 that is a source of microwaves and a waveguide 123 that surrounds the oscillating portion 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 respectively.
Behind the antenna case 124, a motor 126 that rotates or rotates the antenna 125 during microwave heating is arranged.

Reference numeral 127 denotes a power supply circuit board that supplies power to the output of microwave heating and the magnetron 122, and a power supply circuit unit 120P (not shown) that receives commercial power from the filter circuit 54, and a microwave heating unit described later. 130 and 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.
Reference numeral 129 is a fourth cooling fan, which is arranged directly below the box-shaped case B151 on which the heat radiating portion 122H of the magnetron 122 is placed. Several heat radiation fins are formed in parallel in the heat radiation unit 122H for the cooling air from the fourth cooling fan 129 to pass through. 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 fans. Then, it is supported by the bottom plate 101U of the lower case 101 so that the rotation axis in the center of the rotary blade is in the vertical (vertical) direction.

When the third cooling fan 128 and the fourth cooling fan 129 have exactly the same structure, the same shape, and the same rated specifications, the procurement cost at the time of manufacturing can be reduced. Since there is a high possibility that beats will occur if cooling fans with the same specifications are arranged and operated in parallel, as a measure against beats, control is performed so that the rotation speeds of the third cooling fan 128 and the fourth cooling fan 129 are set to different values. May be done.

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

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 the two communication ports 138A and 138B described later.

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

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

Reference numeral 153 is a duct installed above the heat radiating unit 122H, and guides the cooling air RF6 from the fourth cooling fan 129 that has passed through the heat radiating unit 122H to the downstream side as shown in FIG.

Reference numeral 154 is 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 made of a plastic material having excellent electrical insulation.
The case C154 is configured by superimposing the lid 154A on the rear side and the 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 control unit 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 so that various inspections and repairs of the power supply circuit board 127 and the microwave heating control unit 130 inside can be performed.

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 the heat from the heating chamber 113. Further, it is installed away from the bottom plate 101U so that even if a liquid such as water or a cooking liquid enters the inside of the lower case 101 from the upper unit 100 side, the electrical insulation property is not impaired. ing.

As described with reference to FIG. 7, the space having the largest facing distance between the bottom wall 16S of the upper case 16 and the bottom plate 101U of the lower case 101 is the cavity 104.
In the cavity 104, a waveguide 123 constituting a part of the 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 accommodating case C154 of the power supply circuit board 127 on which the circuit component for supplying electric power to the microwave heating control unit 130 is 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 metal fitting 198 on the lower case 101 side is fixed to the upper case 16.

In FIGS. 7 and 8, 131 is a door open / close detection mechanism provided as a countermeasure against radio wave leakage during microwave heating.
In order to ensure the safety of the microwave heating device, it is legally required to install the door open / close detection mechanism 131. A typical door open / close detection mechanism 131 of this type is known in patent documents such as Japanese Patent No. 4372099 and Japanese Patent Application Laid-Open No. 11-214147.

According to the above patent document, as the door open / close detection mechanism 131, three types of switches, a latch switch, a door switch, and a monitor switch, are built in, and these switches are interlocked with the opening / closing of the door to detect the opening / closing with a time lag. Has been proposed.

Further, in Japanese Patent Application 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 the first interlock switch is inserted into the power supply circuit when a short circuit failure occurs. It has been proposed to provide a monitor switch to turn off the fuse.

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

The latch switch 132A is pushed by a pin 134 fixed and protruding on the door 114 side to open and close the built-in contact. The door switch 132B is pushed by a pin 135 fixed to the door 114 side and protruding, and a built-in contact is opened / closed.

The 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, and the like are collectively attached. The support plate 137 is fixed to the lower case 101 by a plurality of screws. The door open / close detection mechanism 131 is mainly configured with various switches mounted on the support plate 137 in this way.

If there is a variation in the mounting position of the latch switch 132A or the door switch 132B in the manufacturing process, there is a concern that the timing of operating each switch may deviate from the specified value. Therefore, in the first embodiment, the door open / close detection mechanism 131 is attached to the support plate 137 (see FIG. 34) so that 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. During manufacturing and after-sales service, the operation of the door open / close detection mechanism 131 can be checked, adjusted, and replaced.

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 portions 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 uses it for cooling the infrared temperature sensor 160 described later. There is.

The temperature sensor 160 faces a hollow sensor case, a sensor substrate housed inside the sensor case, one or more infrared detection elements mounted on the surface of the sensor substrate, and the infrared detection element. The lens attached 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, and the direction of the temperature sensor 160 is not fixed and is automatically swung within a certain angle range. It may also be in the form of detecting the temperature at a wide angle. For example, Japanese Patent Application Laid-Open No. 2018-54250 proposes the use of a plurality of temperature sensors.

In FIG. 9, reference numeral 161 is a detection window facing the temperature sensor 160, and a gap may be formed between the temperature sensor 160 and the outer peripheral surface of the temperature sensor 160 so that cooling air can pass therethrough. 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. Reference numeral 162 is a cooking dish made of porcelain or heat-resistant plastic. The cooking dish 162 is formed to have external dimensions so that it can be taken out and put in from the front opening 113A of the heating chamber 113.

In FIG. 9, the 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 in which the center of the heating chamber 113 is recessed 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 the configuration of this dimension.

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

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

The upper heater 163A can select a multi-stage thermal power in the range of a maximum thermal power of 1200 W to a minimum thermal power of 50 W. As for the lower heater, a multi-stage thermal power can be selected in the range of a maximum thermal power of 1200 W to a minimum thermal power of 50 W.

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

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

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

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

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

As shown in FIG. 9, the upper case 169 and the lower case 170 have a vertically symmetrical shape and are made of a thin metal plate or heat-resistant plastic. The GP8 is a gap formed between the upper case 169 and the upper heat shield plate 167, and has a size of about several mm to 10 mm. The gap GP8 is a closed space so as not to allow air to flow to the outside.

The GP9 is a gap formed between the lower case 170 and the lower heat shield plate 168, and has a size of about several mm to 10 mm. This gap GP9 is a closed space so as not to allow air to 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 sheet or plate-shaped heat insulating material 175C (not shown) is arranged in the gap GP7. Similarly, a sheet or plate-shaped heat insulating material 175D (not shown) is arranged in the GP9. If each of these heat insulating materials 175A to 175D has a form in which a plurality of layers are stacked instead of a one-layer structure, the heat insulating performance is further improved. The planar size (vertical and horizontal dimensions) of each of the heat insulating materials 175A to 17D is at least larger than the respective installation ranges of the upper heater 163 and the lower heater 163B.

In FIG. 9, reference numeral 171 is a partition plate in which a passage 172 through which the cooling air RF5 flows is partitioned 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.
Reference numeral 174 is a communication port formed at the rear portion of the ceiling surface of the heating chamber 113, and the entrance portion of the exhaust duct 102 is connected to the communication port 174. 102E is a terminal portion that is the final outlet of the cooling air.

As shown in FIG. 10, the exhaust duct 102 includes two independent internal passages 102A and 102B at the top and bottom, and the inverter circuit board 121 is cooled in the internal passage 102A on the upper side thereof. After that, the cooling air RF5 flows.
Further, in the other internal passage 102B, the cooling air RF6 introduced into the heating chamber 113 and having an increased temperature flows.

The wind speed of the cooling air RF5 is increased by the discharge port of the cooling air RF5 in which the opening area of the air passage is narrowed. Therefore, the cooling air RF6 is attracted by the cooling air RF5 in the vicinity of 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 air RF5 and RF6 are both efficiently discharged from the exhaust port 20 to the outside of the cooking cooker 1. It should be noted that instead of adopting such an attraction structure, a method of merging at the upstream stage before entering the exhaust duct 102 may be adopted.

In FIG. 10, 180 is a large feeding port formed on the back wall (rear wall surface) 113B of the heating chamber 113, and 181 is a cover that closes the feeding port 180 from the outside, and is a heat-resistant plastic that transmits microwaves. It is formed in the shape of a plate from heat-resistant glass. 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 denotes a waveguide connected to the back surface side of the cover 181. The antenna driving motor 126 is thus fixed to the back surface side of the waveguide 123 via a heat-resistant sealing material 184.

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

Reference numeral 185 is a radio wave sealing chamber formed in a predetermined size around the rotation shaft 126A. This radio wave sealing chamber has a so-called choke chamber structure. Further, in order to prevent microwave leakage more effectively, a radio wave absorber (not shown) is arranged closer to the antenna driving motor 126 than the choke structure, and microwaves from the periphery of the rotating shaft 126A are arranged. You may try to prevent leakage. The choke structure in the microwave heating device is described in Japanese patent documents such as JP-A-2011-174669, JP-A-2010-255978, and JP-A-63-172828 (1/4 wavelength choke). Since there is a combination of a room and a radio wave absorber), detailed explanation will be omitted.

In FIG. 10, LA shows the dimensions from the back wall (rear wall surface) 113B of the heating chamber 113 to the tail end of the antenna driving motor 126. Hereinafter, this dimension is referred to as "protruding dimension". It is desirable to reduce this protruding dimension LA, but 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 external dimensions of the antenna driving 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 back surface of the antenna drive motor 126 and the inclined portion 101C of the lower case 101, 69 mm at the upper end of the motor 126, and conversely, the gap between the lower end and the lower case 101C is 53 mm. Degree. Since it is dimensionally impossible to arrange the case C154 in the gap GP10, in the first embodiment, the case C154 is displaced to the right from directly behind (behind) the antenna drive motor 126. It is arranged.
This makes it possible to incorporate the microwave heating device 120 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 denotes a metal or plastic frame constituting the outer shell of the door 114, which is formed in a frame shape when viewed from the front side. Reference numeral 192 is an inner frame, which is formed of a metal plate. An opening serving as a viewing window 192W is formed in the central portion of the inner frame 192.

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

Reference numeral 193 is an inner seal frame having innumerable small holes having dimensions that do not allow microwaves to pass through the portion corresponding to the viewing window 192W. The inner seal frame is formed by press-molding a thin metal plate as a whole, and a choke chamber 194 having an inlet (slit) formed on the heating chamber 113 side is formed on the outer peripheral edge portion.

Reference numeral 195 is a sealing plate made of a thin metal plate. As shown in FIG. 10, the outer peripheral edge portion of the seal plate 195 is bent in a series toward the inner seal frame 193 side. The choke chamber 194 forms the choke chamber 194 in a space surrounded by the outer peripheral edge portion of the seal plate 195 and the inner seal frame 193.

When the door 114 is completely closed, both the outer peripheral edge portion 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 to the inside of 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 sealing 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 is a metal upper shielding plate having a width dimension equal to at least the width of the door 114 along the upper surface of the door 114. The upper shielding plate 197 is provided in an eaves shape close to the upper surface of the door 114, and is fixed to the lower case 101 with 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 a hinge portion (not shown) in the lower case 101, the door 114 can be opened by holding the handle portion 115 and pulling it toward you.
At the initial stage of such opening, there is a concern that a gap is momentarily generated in the overlapping portion between the door 114 and the lower case 101 and a part of the microwave leaks. However, in the first embodiment, the upper shielding plate 197 is present. Thereby, such unwanted microwave leakage can be suppressed above the door 114.

In FIG. 12, reference numeral 201 denotes an introduction port formed in the front portion 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 as not to leak microwaves. The reason why the introduction port 201 is provided in the front portion of the right side 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 fogging of the viewing window 192W of the door 114. be.
The cooling air RF6 after cooling the heat radiating portion 122H of the magnetron 122 is guided to the introduction port 201 by the gap GP5R.

The temperature sensor 160 is located upstream of the introduction port 201 in the flow of the cooling air RF6, and a part of the cooling air RF6 is blown into the heating chamber 113 at the portion of the temperature sensor 160. The amount of cooling air RF6 reaching the introduction port 201 is small. However, the purpose of injecting air from the introduction port 201 is to "suppress fogging" of the seal plate 196 inside the door 114, and there is no problem with a small air volume. It is not necessary to adopt the supply of air from the narrow gap around the temperature sensor 160.

Next, the details of the control means will be described with reference to the block diagram shown in FIG.
The microwave heating control unit 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 operation. , Stops, operating conditions, etc. are controlled.

The power supply circuit of the microwave heating control unit 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. Various electric components (diodes and the like) that convert AC power to DC are mounted on the power circuit board 127, and are housed in a case C154 in a sealed state (see FIG. 7).

When the microwave heating control unit 130 receives the command signal from the power control unit 72, the microwave heating control unit 130 operates so as to reduce the total power consumption of the microwave heating device 120 in response to the command signal, and outputs the magnetron 122. There is a function of transmitting a command signal that lowers the power consumption 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 unit 122H of the magnetron 122 is higher than the specified value even after microwave heating is completed, the command signal for continuing the operation of the fourth cooling fan 129 until the temperature drops is sent to the fourth cooling. Send to fan 129.

Reference numeral 139 is a closing detection unit for the door 114. The closure detection unit 139 detects the open / closed 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 through each circuit or the open / close signal.

Since the circuit board constituting the closure detection unit 139 is attached to the support plate 137, whether or not the circuit board can be operated normally by removing the support plate 137 for inspection or measuring with the support plate 137 installed. Can be inspected (see Fig. 7).

Reference numeral 158 is a non-contact temperature measuring unit (infrared temperature measuring unit) that detects the temperature of food, cooking utensils, etc. placed in the heating chamber 113, and receives the temperature sensor 160 and the measurement signal from the temperature sensor. It consists of a circuit (not shown) that analyzes and converts it 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 operation, operating conditions (heat power, that is, calorific value) and the like. The control circuit of the heating chamber control unit 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 so as to reduce the total power consumption of the upper heater 163A and the lower heater 163B in response to the command signal, and the upper heater 163A. And there is a function to transmit a command signal that lowers 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 thermal power.

Next, a configuration example of the drive circuit of the IH coils 17L and 17R of the cooking 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, the induction heating operation is performed by supplying high frequency power to the IH coils 17L and 17R by the drive circuit 74.
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. Even with the IH coil 17L on the left side, the drive circuit 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 the current input from the AC power supply 99 to the DC power supply circuit 22, that is, the 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 an AC voltage input from the AC power supply 99 into a DC voltage, and outputs the AC 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 with the output of the DC power supply circuit 75. In the inverter circuit 81R, diodes 79c and 79d are connected in parallel with the IGBTs 79a and 79b as flywheel diodes, 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 the DC power 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 corresponding 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 A flows through the IH coil 17R, and the high-frequency magnetic flux generated by the flowing high-frequency current induces the heated object 5 on the top plate 15 directly above the IH coil 17R. It is heated.

The IGBTs 79a and 79b are composed of, for example, a silicon-based semiconductor, but may be configured using a wide bandgap semiconductor such as silicon carbide or a gallium nitride-based material.

By using a wide bandgap semiconductor for the IGBTs 79a and 79b as the switching element, it is possible to reduce the energization loss of the IGBTs 79a and 79b as the switching element. 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 is good. Therefore, the heat radiation fins of the heat sink 82 to which the switching elements (IGBTs) 79a and 79b are attached can be miniaturized, and the drive unit can be miniaturized and the cost can be reduced.

The output current detection unit 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, the current flowing through the IH coil 17R, that is, the 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, a half-bridge type inverter has been described, but the circuit that drives the IH coil 17R may be a full-bridge type inverter.

The wireless communication unit 49 is a wireless communication means for performing wireless communication with a home control device (not shown) that comprehensively manages the power consumption and operation information of home appliances in the home. It can send and receive wireless signals. The home control device can also be connected to a portable information terminal such as a smart phone, a tablet-type 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 is, the more easily it is affected by noise. Therefore, the wireless communication unit 49 and the integrated control device MC are arranged close to each other, and the wireless communication unit is arranged. It is desirable to shorten the wiring connecting the 49 and the integrated control device MC.

Considering the influence of the above-mentioned noise, in the first embodiment, the wireless communication unit 49 is installed at the right end of the input operation unit 40. 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 center portions of the input operation unit 40 (see FIG. 14).

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

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

FIG. 18 is a flowchart for explaining the entire control operation of the cooking device 1 before the start of cooking.
FIG. 19 is a flowchart for explaining a control operation at the time of induction cooking in the cooking device 1.

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

FIG. 18 will be described.
The basic operation program from turning on the power to starting cooking preparation is stored in the storage device MM inside the integrated control device MC.
In the built-in type cooker 1, the power plug 106A is always connected to the commercial (alternating current) power supply 99 from the time when the kitchen furniture 2 is installed, so that the user can use 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 started. The integrated control device MC itself starts diagnosing the presence or absence of an abnormality by its own control program.

Then, the presence or absence of abnormality in the control device 90 for centrally controlling the induction heating source 17, the heating chamber control unit 159, and the microwave heating control unit 130 is checked.

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, 81R, the vicinity of the central display unit 30, and the like. Therefore, the detection temperature of those temperature sensors is transmitted to the temperature detection circuit 93. As a result, the control device 90 can determine the presence or absence of an abnormality (ST2).

Further, the heating chamber control unit 159 and the microwave heating control unit 130 can also acquire the detected temperatures from the temperature sensors TS1 and TS2 and determine the presence or absence of an abnormality.

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

Since the control device 90 collects temperature information of the main components built in the upper unit 100, the control device 90 performs an abnormal heating determination process as an 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 an electronic element such as a liquid crystal display screen in the central display unit 30, the control device 90 determines that the temperature is abnormally high. Then, the integrated control device MC is notified of the abnormality, and processing such as displaying or notifying that the operation cannot be started is executed.

If no abnormality is found, the control device 90 transmits a signal to the integrated control device MC. Then, the central display unit 30 is activated and displays that "cooking can be started because there is no abnormality" (ST3).
At the same time, the voice synthesizer 95 notifies the content similar to the content displayed by the central display unit 30 by voice (ST3).

In step ST3, the wireless communication unit 49 accesses the "home control device" and acquires information such as cooking menus and recipe information useful for health management within a range set in advance by the user. For example, the information previously transmitted by the user of the cooking cooker 1 to the "home control device" via the Internet line using a portable information terminal device or the like can also be acquired when the central display unit 30 is started. .. When some information is acquired, a dedicated caution information lamp (not shown) provided near the input operation unit 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 performs notification for prompting the selection of the heating means and voice guidance by the central display unit 30 and the voice synthesizer 95 (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).

If the selection is not made within a certain grace time (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 is selected (“Yes” in step ST6).

If step ST6 is "Yes" as described above, the process proceeds to the next step ST10. Subsequent control steps for induction heating 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 menu selection step ST8 of the two heating sources included in the lower unit 200.

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

The menu displayed at the stage of step ST8 in FIG. 18 is based on the heating source of the lower unit 200, and the following four menu selection units are displayed.
(1) A cooking menu (ST9A) using at least one of the upper heater 163A and the lower heater 163B.
(2) A cooking menu (ST9B) in which a microwave heating device 120 is used in combination with the above (1).
(3) Cooking menu (ST9C) in which the microwave heating device 120 is used in combination.
(4) Cooking used by combining at least one of the upper heater 163A and the lower heater 163B, at least one of the microwave heating devices 120, and an induction heating source (IH coil 17L, 17R) of the upper unit 100. Menu (hereinafter referred to as "cooperative cooking menu") (ST9D).

The route from the stage of step ST10 to step ST9D is shown by a broken line, but it is better to perform cooperative cooking from the middle after proceeding with the operation to select the heating source of the upper unit 100 in this way. If it is found that, the menu of the cooperative cooking may be selected without returning to the step ST5. Also, in the same way, it is possible to select cooperative cooking at another opportunity so that the cooperative cooking can proceed from the middle. This will be described in FIG. 19 below.

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

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

It is estimated whether or not the object to be heated (metal pot, 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, and this estimation result is obtained. It is transmitted to the control device 90, and it is determined whether the heat treatment is suitable for a standard diameter pan or a large diameter pan (step MS1).
If the pot is compatible but has a large diameter, or if it is not compatible with heating, the treatment is different from that of the standard pot.

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

When the user selects and inputs the "control mode" of cooking, the heating power, the cooking time, etc. by 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", "boiler", "preheat", "rice cooking", "boil", "boiler + heat retention", and so on. There are eight types 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 energization amount (thermal power) of the IH coil 17R is selected. ), 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 is performed, the control device 90 drives the inverter circuit 81R of the induction heating circuit 94R after that time has elapsed. Then, induction heating is started (MS6).

The case of the "large-diameter pan" is basically the same as in steps MS1 to MS7, but some of the eight control modes shown in FIG. 19 cannot be selected as the control mode. The "high-speed heating mode" can be heated only in the case of the "normal pot" or the "large-diameter pot" using the large-diameter IH coil 17L on the left side. The small pot means that the diameter of the bottom surface of the pot is less than 10 cm in the first embodiment, and it is detected as unsuitable for induction heating, and induction heating cannot be performed.

Next, the integrated power control operation when two or more different types of heating sources are used at the same time, such as induction heating and microwave heating, will be described with reference to FIGS. 20 to 22. It should be noted that the examples described with reference to FIGS. 20 to 22 are not the case of the above-mentioned "cooperative 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 during the period in which the induction heating is first performed in the upper unit 100. Even when oven cooking, grill cooking, etc. are performed using both or one of the upper heater 163A and the lower heater 163B during the period of induction cooking, as described in FIG. 20. Basic total power control (in the entire cooking cooker 1) is performed by the integrated control device MC and the power control unit 72.

During the period of induction heating, when the user tries to perform microwave heating using the heating chamber 113 of the lower unit 200, first the central operation unit 40M of the input operation unit 40 is used to heat the lower unit 200. There is a way to select the heating source.
However, an easy way to do this is to open the door 114 as is. That is, in the first embodiment, when the upper unit 100 is operated (when the main power switch 97 is in the ON state), cooking by the lower unit 200 can be started 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, as described in the main part of the door open / close detection mechanism 131, there are a latch switch 132A and a door switch 132B that are opened / closed according to the opening / closing of the door 114. Then, the opening of both or one of the latch switch 132A and the door switch 132B may be monitored by the integrated control device MC by an appropriate means (sensor, switch, etc.).

In FIG. 20, when the signal indicating that the door 114 of the heating chamber 113 is opened is received as described above, the integrated control device MC uses the thermal power (power consumption) corresponding to the microwave heating menu. (Step S2). For example, when food or the like is put into the heating chamber 113 and it is detected that the door 114 is closed, an inquiry such as "Please set the heating power" is made to the user by a voice guide or the like.

When the user inputs the thermal power in the central operation unit 40M, the process proceeds to the next step S3.
Alternatively, when the user simply gives an instruction to "start heating" at the central operation unit 40M, the power consumption of the third cooling fan 128, the fourth cooling fan 129, etc. is also added to the rated power consumption value determined by the magnetron 122. Reflecting and using the power consumption value known in advance, the integrated control device MC determines in step S3 whether or not the total power regulation value is exceeded.

For example, since the integrated control device MC holds the thermal power value of the induction heating and the power consumption of the first cooling fan 60 and the second cooling fan 61 that have started earlier as data, the power consumption of the upper unit 100 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.

When step S3 is "Yes", it is necessary to reduce either the output of the operating IH coil 17R or the thermal power of microwave heating. 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 in the upper unit 100, the rice cooking is prioritized and the heating power of the heating source of the upper unit 100 is not reduced.

Further, when the upper unit 100 is performing "fried food", the fried food is automatically controlled to increase the heating power so that the temperature of the cooking oil does not drop excessively according to the input of ingredients and the like. Therefore, even in such a case, the thermal power of the heating source of the upper unit 100 is not reduced.

If it is determined in step S5 that the induced heating is prioritized, the power consumption of the microwave heating is reduced. Therefore, if the rated output of the microwave is 600 W (power consumption is 1000 W), the power consumption is temporarily reduced. For example, the output is set to 300 W. Then, the user is notified that such a restriction is applied. 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, and starts microwave heating with low thermal power (S7).
Since it has a non-contact temperature measuring unit (infrared temperature measuring unit) 158 that detects the temperature of food, cooking utensils, etc. placed in the heating chamber 113, whether or not the food has been heated and reached the target temperature. 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, a signal is output from the microwave heating control unit 130 to the integrated control device MC. Then, the process proceeds to the next step S12, and the notification that the microwave heating is completed is notified.

When the induction heating is completed, the process proceeds to step S10, a command is issued to the microwave heating control unit 130, the heating power is initially restored to the set thermal power intended by the user, and the microwave heating is continued (S10). Then, the monitoring of the temperature of the object to be heated is continued (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 was monitored, and when the target temperature was reached, the microwave heating was terminated. However, since there is also a control method in which the irradiation time of the microwave is measured and the cooking is terminated when the set time elapses, FIG. 21 will be described next.

FIG. 21 is an example in the case where a control method for terminating cooking by the irradiation time of microwaves is adopted.
Since steps S6 are the same as in FIG. 20, the description thereof will be omitted.

When the microwave heating is started in step 7, the microwave heating control unit 130 calculates the correction (extension) of the heating time when the output of the magnetron 122 is lowered to a certain value. Then, in step S8, the time after the extension is determined as "set 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 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 terminated and this is notified (S12). Until the set time 2 elapses, the temperature monitoring by the non-contact temperature measuring unit (infrared temperature measuring unit) 158 may be used together.

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

In FIGS. 22 and 23, unlike FIGS. 20 and 21, there is an integrated control device MC and an induction heating device including a microwave heating device 120, an IH coil 17L, 17R, an inverter circuit 81, and the like. It also shows the sending and receiving of signals.

In FIGS. 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).

After that, when the input operation unit 40 determines the thermal power and control mode of the IH coils 17L and 17R (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 information indicating 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 starts the heating operation by the induction heating circuits 85L and 85R.

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

When the user opens the door 114, as described with reference to FIG. 20, both the latch switch 132A and the door switch 132B are opened, and the sensor (not shown) monitoring the door 114 is used to open the door 114. A signal indicating the opening of the door is transmitted to the integrated controller MC (L3).

When the user inputs the thermal power in the central operation unit 40M, the integrated control device MC issues a command signal for starting operation 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" at the central operation unit 40M, the integrated control device MC issues a command signal for starting operation to the microwave heating control unit 130.

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

Next, upon receiving information from the integrated control device MC, the power control unit 72 reflects the power consumption of the third cooling fan 128, the fourth cooling fan 129, etc. in advance in the rated power consumption value determined by the magnetron 122. Using the power consumption value known in, find the total power consumption when microwave heating and induced 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.

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

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

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

Then, the microwave heating control unit 130 instructs the inverter circuit 81R to change the microwave heating to a low thermal 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 permission signal for starting the heating operation to the microwave heating device 120 (L7).

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

Therefore, when the microwave heating is completed, the microwave heating control unit 130 determines from the current detection value of the inverter circuit 121A that the heating operation has been completed, and notifies the integrated control device of the heating operation with a specific signal (L8). ). Further, the microwave heating may be performed only for a certain time depending on the timer setting, and in that case, the microwave heating control unit 130 detects the lapse 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 return to the set thermal power initially desired by the user (L9). Then, the thermal power is raised to the initial target level and the induction heating is continued (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 has been completed (L10).

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

When the input operation unit 40 is instructed to start the induction heating unit, the control device 90 issues a drive command to the induction heating circuits 85 and 85R corresponding to the designated heating unit, and the IH coils 17L and 17R It drives the inverter circuits 81L and 81R.

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 or slightly delayed from the start of driving the inverter circuits 81L and 81R.

The ventilation 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 according to the temperature of the temperature sensor TS 8 of the heat sink 82 and the temperature sensor TS that detects the temperature in the vicinity of the central display unit 30.

Generally, if the cooling fan is changed from weak operation to strong operation, the wind noise of the fan becomes louder, which may cause noise. Therefore, the temperature detected by the two temperature sensors TS7 and TS8 and the operating strength of the cooling fans 60 and 61 are determined as a correspondence table (data table) from the data such as the preliminary ventilation test, and this 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 an 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. The cooling air RF2 is pushed into the second air passage F2 from the air outlet 61A as shown by an arrow in FIG.

The ventilation holes 64 located directly below the first cooling fan 60 and the ventilation holes 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 a large number of them are provided. The small hole group may be provided and the small hole group may be shared.

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

Two IGBTs 79a and 79b are used for one IH coil 17L. These two IGBTs are collectively called the power control switching element 83.
Further, the power control switching element 83 is also 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 to the right while cooling parts such as various switches, a liquid crystal display screen, and a display unit drive circuit 63 that receive input operations arranged in the input operation unit 40.

Some of the cooling air RF1 changes its direction upward when it exits the outlet FO of the cover 70, but because of the momentum of the cooling air RF2 merging from the front side, the cooling air RF1 is above the cover 70 like the cooling air RF3. Is largely divided into those that proceed in the direction of the filter circuit board 54 as shown in the cooling air RF4 and those that proceed by reversing to the left.

The cooling air RF3 flows below the IH coil 17R on the right side, and then flows directly below the IH coil 17L on the left side. 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, cooling is performed with the cooling air RF3, which is a combination of the two cooling air RF1 and RF2.

As described with reference to FIGS. 13 and 14, the exhaust window 52A exists in the range on the left side from the left and right center lines CL1 and has only the length indicated by the reference numeral LF. Therefore, after passing through the filter circuit board 54, the cooling air RF4 travels in the leftward direction, 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 turns in the direction of the exhaust window 52A that is the final exhaust port, passes through the through hole 53A, and is discharged from the exhaust window 52A.
As a result, the cooling air 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 away from the filter circuit board 54, cooking liquid and water overflowing from a pot or the like (hereinafter, these are referred to as "foreign substances") are placed on the exhaust cover 19 during operation. ) Flows, it is possible to prevent the foreign matter from passing through the exhaust port 20 and reaching the filter circuit board 54. Therefore, it is possible to prevent a cause of electric leakage or failure. As described above, the filter circuit board 54 and the gap GP1 are separated by a partition plate 52 except for the exhaust window 52A. The term "separation" as used herein does not mean a separation that can completely block the flow of air, but a separation that can prevent the intrusion of foreign substances that have been added or flowed down from above.

(Basic operation of microwave cooking)
Next, in the cooking apparatus 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, microwave cooking can be started as it is even if the upper unit 100 does not actually execute induction cooking. However, once the main power switch 97 is turned off, it is necessary to first turn on the main power switch 97 in order to start microwave cooking.

For safety, the main power switch 97 automatically resets after a certain period of time (for example, 30 minutes) from the last timing when any of microwave heating, oven (heating chamber 113) heating, and induction heating is finished. Will be released. Alternatively, when the temperatures of the top plate 15 and the heating chamber 113 all drop below the specified value, the main power switch 97 is automatically opened. Such safety measures are adopted.

Next, when the door 114 is opened, food or the like to be cooked is put into the heating chamber 113, the door 114 is occupied, and then the input operation unit 40 is instructed to start microwave cooking, integrated control is performed. The apparatus 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 control unit 130 drives the inverter circuit 121A of the magnetron 122 to radiate microwaves from the oscillation unit 122A. The microwave referred to here is a radio wave of 2450 MH ± 50 MHz.

The generated microwave is guided from the waveguide 123 into the antenna case 124. Since the driving motor 126 of the antenna 125 starts operation at the timing when the microwave is oscillated, the microwave introduced in the antenna case 124 is caused by the action of the rotating antenna 125 and the rotating shaft 126A. It can be evenly propagated inside the heating chamber 113. Since the operation of this type of antenna and the rotating shaft 126A is described in detail by, for example, Japanese Patent No. 4836965 and Japanese Patent No. 5674914, 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 to become 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.

Next, the cooling air RF5 passes through the communication port B138B and the communication port A138A provided at two locations above and below the case A150, and the cooling air RF5 passing 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. There is a minute gap of several mm or less 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 out from the detection window 161 of the temperature sensor 160 into the heating chamber 113.

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

Looking at the position of the communication port 173 from the communication port A138A in a plane, the communication port 173 is located diagonally rearward across the passage 172. That is, there is a communication port at the farthest position.
Therefore, the entire air in the passage 172 is guided to the communication port 173 and introduced into the exhaust duct 102 that passes through the communication port 173 and extends horizontally to the rear (see FIG. 10).

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

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, air is sucked into the inside of the case A151 from the intake port B152B formed in the bottom plate 101U of the lower case 101 as shown in FIG. 8, and becomes the cooling air RF6. Then, the cooling air RF6 first cools the heat radiating portion 122H of the magnetron 122, passes through the radiating portion 122H, and reaches the inside of the duct 153.

The cooling air RF6 then enters the void 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 introduction port 201.

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

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

The cooling air RF6 is introduced into an exhaust duct 102 extending horizontally rearward from the communication port 174. Then, when the cooling air RF6 exits the exhaust duct 102, it joins the cooling air RF5 so as to be attracted to the updraft, and is discharged from the exhaust port 20 into the room.

Even when the initial air volumes of the cooling air RF5 and the cooling air RF6 were the same, the wind speed was faster when the cooling air RF5 was discharged from the duct 102 due to the difference in the path as in the first embodiment. .. Therefore, it has an action of attracting the cooling air RF5 discharged from below.

Since the cooling air 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 it is advantageous in considering the arrangement of parts inside the upper unit 100.

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

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

Next, the door 114 is opened, food or the like is put into the heating chamber 113, and then the cooking menu using the heating chamber 113 is selected in the central operation unit 40M of the input operation unit 40. For example, in the case of cooking to bake 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.

The heating chamber control unit 159 receives a command signal from the integrated control device MC and controls whether or not the upper heater 163A and the lower heater 163B are energized, the energization time zone, the energization pattern (intermittent heating), the thermal power, and the like.

The temperature sensor TS1 detects the temperature inside 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 the upper heater 163A and the lower heater 163B, or one of them, by observing the difference between the target temperature and the detected temperature.

When the timer cooking control method is input by the central operation unit 40M, the upper heater 163A and the lower heater 163B, or 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 closing the door 114, when the central operation unit 40M of the input operation unit 40 is instructed to start cooking in the oven (heating chamber 113), the integrated control device MC sends the microwave heating control unit 130 to 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 output directly 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 out from the gap between the outer shell case of the temperature sensor 160 and the mouth edge of the mounting hole into the heating chamber 113 through the detection window 161.

On the other hand, the cooling air RF5 that has passed through the communication port A138A is guided to the passage 172. Then, while cooling the upper case 169, the communication port 173 is reached, and then the upper case 169 is introduced into the exhaust duct 102 (see FIG. 10).

On the other hand, the cooling air RF6 by the fourth cooling fan 129 passes through the heat radiating 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 void GP5R with almost no temperature rise.

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

The food or the like to be cooked in the heating chamber 113 may generate steam, oily smoke, or the like due to the radiant heat of the upper heater 163A or the lower heater 163B. As shown in FIG. 10, such steam, oil smoke, and the like are carried to the communication port 174 by the cooling air RF6 moving from the front portion of the heating chamber 113 to the rear portion.

After that, the cooling air RF6 is introduced into the exhaust duct 102 extending horizontally rearward from the communication port 174. Then, when the cooling air RF 6 exits the exhaust duct 102, the cooling air RF 6 passes through the exhaust port 20 and is discharged into the room while being attracted by the cooling air RF 5 rising upward.

In the first embodiment described above, after the main power switch 97 is turned on, the integrated control device MC changes the overall condition of the cooking cooker 1 up to a certain stage, and then temporarily the left operation unit 40L or the right operation unit 40R. When was operated, the subsequent induction heating control was entrusted to the control device 90. However, the range controlled by the integrated control device MC may be changed between the control device 90 and 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 cooking menu of either induction heating, microwave heating, or oven (heating chamber) heating is selected, the control device 90, the heating chamber control unit 159, or the microwave heating control unit 130 is basically used. It is also possible to perform a control operation related to heating.

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

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

When "fried food (automatic cooking)" is selected in the cooking menu of induction heating, the temperature of the cooking oil put in the pan is monitored by the temperature detection circuit 93 and automatically of the IH coils 17L and 17R. The firepower is controlled.

When the user selects the control mode for fried food cooking (automatic), the control device 90 sequentially executes the preheating step, the fried food cooking step, and the heating power up step as shown in FIG. 25. Further, on the display screen of the central display unit 30, information indicating necessary information and reference information (for example, an estimated time required for preheating) appears in characters, figures, and the like. It is also displayed that the priority cooking is such that the electric power is not limited (suppressed) by the electric power control unit 72.

Therefore, during the cooking of the fried food, the user can recognize that the electric power is preferentially secured 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 started to be driven at a predetermined thermal power value (maximum 1500 W) in the preheating process, and the oil temperature is rapidly increased. Rise from room temperature (eg, 20 ° C.) to 180 ° C., the target temperature T1.

Since this temperature rise is monitored in real time by the temperature detection circuit 93 described above, when the temperature detection circuit 93 detects that the target temperature T1 (first temperature) has reached 180 ° C., the control device 90 Tries to maintain the target temperature as it is by adjusting the induced heating amount, that is, the inverter output (based on such temperature detection information, the operation of automatically adjusting the high frequency thermal power to approach the target temperature is as follows. , "Temperature feedback control").

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

When the user puts an ingredient, for example, a frozen croquette, into the oil, the oil is rapidly cooled by the cold ingredient from the time of the addition, so that the temperature drops sharply as shown in FIG. 25. However, since the temperature detection circuit 93 monitors the movement of such a temperature drop, it immediately raises the thermal power of the inverter circuit 81R (81L) to a predetermined thermal power of 1500 W or 1800 W and drives it, so that the oil temperature rises again. (Temperature feedback control). In this way, as soon as the target temperature T1 is reached again (or after a predetermined time has elapsed), the process shifts from the fried food process to the heating power increasing process.

In the thermal power up step, the oil temperature is controlled to be maintained between 225 ° C. of the second temperature T2, which is higher than the target temperature T1, and 230 ° C. of the upper limit temperature (third temperature) T3 higher than this. The device 90 controls the inverter circuit 81R (81L).

As shown in FIG. 25, the thermal power value is intermittently driven at about 900 W. The process after the temperature reaches the third temperature T3 is called "fried food finishing process", and is an important process for finishing the fried food crisply. If you do not cook with sufficient heat in such a process to increase the heat, you will not be able to make fried food well. Since the fried food process is not limited to a predetermined time, if the user presses the input key 44R (or the input key 45L), all the fried food cooking is completed.

As shown in FIG. 25, in the (automatic) fried food cooking control mode, the process from the fried food cooking process to the heating power up process is defined as the "priority cooking menu execution time zone", and other execution time zones are defined. Power is not reduced by starting the heating source or changing the operating conditions. That is, the induction heating control device 90 always grasps whether or not 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, that effect. Has a function to notify the outside.

As is clear from the above description, each time a specific control mode is entered, the integrated control device MC does not emit a control signal to the control device 90, and the control mode is started and completed from the start to the end. It is left to the control of the control device 90.

As is clear from the above description, the cooking device of 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 and an upper unit 100.
A lower unit 200 attached to the upper unit 100 and having a built-in heating chamber 113 is provided.
In the lower unit 200, 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.
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.
The upper unit 100 includes an induction heating circuit 94L, 94R controlled by the integrated control device MC, a filter circuit board 54 on which a filter circuit that receives electric power from a commercial power source 99 is mounted, and a filter circuit board 54. It has an inverter circuit board 80 on which an inverter circuit 81 that receives electric power is mounted, and has an inverter circuit board 80.
The lower unit 200 receives electric 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). Place the inverter circuit board 121A and
The filter circuit of the upper unit 100 is configured to supply electric power for each of the control unit 130 of the microwave heating device and the oven heating device 140.

Therefore, according to this configuration, by providing the upper unit 100 and the lower unit 200 with three types of heating sources, it is possible to perform a wider range of combined cooking than before.
In addition, the inverter circuit boards arranged in the upper unit 100 and the lower unit 200 can be linked by centralized control by the comprehensive control device MC, and the heating power is distributed from the filter circuit of the upper unit to the three heating sources. However, it is possible to provide a heating cooker capable of reducing the reflux of noise on the commercial power supply side.

Further, the cooking device of 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 and an upper unit 100.
A lower unit 200 attached to the upper unit 100 and having a built-in heating chamber 113 is provided.
In the lower unit 200, 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.
The upper unit 100 includes an integrated control device MC that centrally controls the induction heating source 17, the microwave heating device 120, and the oven heating device 140.
The upper unit 100 is an inverter equipped with induction heating circuits 94L and 94R controlled by the integrated control device MC, a power supply circuit board 55 that receives electric power from a commercial power source 99, and a (first) inverter circuit 81. It has a circuit board 80 and
In the lower unit 200, a microwave heating control unit 130 of the microwave heating device 120, a heating chamber control unit 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 for cooling the (first) inverter circuit 81.
The control unit 130 of the microwave heating device and the oven heating device 140 are configured to supply electric power for each heating source from the filter circuit board 54 of the upper unit 100.

Therefore, according to this configuration, by providing the upper unit 100 and the lower unit 200 with three types of heating sources, it is possible to perform a wider range of combined cooking than before.
Further, the inverter circuit boards 80 and 121 arranged in the upper unit 100 and the lower unit 200 can be linked by centralized control by the comprehensive control device MC.
Further, the filter circuit board 54 is branched from the filter circuit board 54 to distribute the heating power to the three heating sources, and is located downstream of the cooling air passage (first air passage F1) of the first cooling fan 60. Is arranged, so that overheating of the filter circuit board 54 can be prevented.

Further, the cooking device of 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 and an upper unit 100.
A lower unit 200 attached to the upper unit 100 and having a built-in heating chamber 113 is provided.
In the lower unit 200, 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.
The upper unit 100 includes an integrated control device MC that centrally controls the induction heating source 17, the microwave heating device 120, and the oven heating device 140.
The upper unit 100 is an inverter equipped with induction heating circuits 94L and 94R controlled by the integrated control device MC, a power supply circuit board 55 that receives electric power from a commercial power source 99, and a (first) inverter circuit 81. It has a circuit board 80 and
In the lower unit 200, a microwave heating control unit 130 of the microwave heating device 120, a heating chamber control unit 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 for cooling the (first) inverter circuit 81.
The control unit 130 of the microwave heating device and the oven heating device 140 are for controlling from the 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. It is configured to supply low voltage power.

Therefore, according to this configuration, by providing the upper unit 100 and the lower unit 200 with three types of heating sources, it is possible to perform a wider range of combined cooking than before.
Further, the inverter circuit boards 80 and 121 arranged in the upper unit 100 and the lower unit 200 can be linked by centralized control by the comprehensive control device MC.
Further, the power supply circuit board 55 is configured to distribute power of a specified low voltage to the control devices 90, 130, and 159 of the three heating sources, and the cooling air passage (first air passage) of the first cooling fan 60 is provided. Since the power supply circuit board 55 is arranged on the downstream side of F1), overheating of the power supply circuit board 55 can be prevented, and stable power can be supplied to the control device 90 and the like.

Summary of Embodiment 1.
As is clear from the above description, the cooking utensil 1 of the first embodiment has the configuration of the first invention.
That is, the cooking device 1 in the first embodiment is
It has a flat body 10 with a top plate 15 on top on which the object to be heated is placed.
Inside the main body, there are IH coils 17L and 17R for heating the 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 are provided.
The first cooling fan 60 has a rotary blade that rotates about a vertical axis, and faces the inlet of a first air passage F1 formed between the inverter circuit board 80 and the cover 70. ,
The first cooling fan 60 is characterized in that the first cooling air RF1 is supplied from the inlet FI at one end of the first air passage F1 to the outlet FO at the other end. be.

Due to this configuration, the IH coil installation space CK and the installation space of the inverter circuit board 80 are vertically partitioned by the cover 70, and the inverter circuit board 80 can be effectively cooled.

The cooking device 1 of the first embodiment has the configuration of the second invention.
That is, the cooking device 1 in the first embodiment is
It has a flat body 10 with a top plate 15 on top on which the object to be heated is placed.
Inside the main body, the left IH coil 17L and the right IH coil 17R, which are arranged at two locations on the left and right to heat the object to be heated on the top plate 15, are common to these two IH coils. There is 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 a cover 70 installed near the left wall surface of the main body. A first cooling fan 60 for introducing cooling air from a ventilation hole formed in the housing is provided.
The cover 70 is installed in a series from the first cooling fan 60 to the right side of the IH coil 17L on the left side.
The first cooling fan 60 has a rotary blade that rotates 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.
An exhaust window 52A is provided at the inner rear portion of the main body 10 so that the first cooling air FR1 emitted from the first air passage F1 is introduced after passing through the space above the cover 70.
The formation position of the exhaust window 52A is configured to be 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 partitioned by the cover 70, and the inverter circuit board 80 can be effectively cooled. Moreover, the cooling air RF1 emitted from 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 directly under the IH coil 17R on the right side, and the IH on the right side above. The coil 17R is cooled, and the process proceeds to the exhaust window 52A provided at a position far from this position.
Therefore, the left and right IH coils 17L and 17 can be cooled without guiding the cooling air with a special guide plate or the like.

The cooking device 1 of the first embodiment has the configuration of the third invention.
That is, the cooking device 1 in the first embodiment is
It has a flat body 10 with a top plate 15 on top on which the object to be heated is placed.
Inside the main body, the IH coils 17L and 17R for heating the object to be heated on the top plate 15, the inverter circuit board 80 arranged below the IH coils 17L and 17R, and the IH coils 17L and 17R The cover 70 installed between the inverter circuit board 80 and the first cooling fan 60 and the second cooling fan 61 for introducing cooling air from the outside of the main body 10, and the user's operation input. Equipped with an input operation unit 40 that accepts
The first cooling fan 60 has a rotary blade that rotates about a vertical axis.
The first cooling fan 60 faces the inlet FI of the first air passage F1 formed between the inverter circuit board 80 and the cover 70, and the first cooling fan 60 faces 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 to 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 supplies the second cooling air FR2 to the input operation unit 40.

Due to 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 cooking device 1 of the first embodiment has the configuration of the fourth invention.
That is, the cooking device 1 in the first embodiment is
It has a flat body 10 with a top plate 15 on top on which the object to be heated is placed.
Inside the main body 10, an IH coil that heats an object to be heated on the top plate 15, an inverter circuit board 80 arranged below the IH coil, and 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 electric power from a commercial power source to generate a necessary power source.
The first cooling fan 60 has a rotary blade that rotates about a vertical axis.
The first cooling fan 60 faces the inlet of the first air passage F1 formed between the inverter circuit board 80 and the cover 70, and the first cooling fan 60 faces the first air passage F1. The configuration is such that 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 side opposite to the first cooling fan 60 with the cover 70 interposed therebetween.

Due to 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, since the cooling air RF1 that has cooled the inverter circuit board 80 reaches the power supply circuit board 55 in the traveling direction thereof, the electric component 85 mounted on the power supply circuit board 55 can be cooled.

The cooking device 1 of the first embodiment has the configuration of the fifth invention.
That is, the cooking device 1 in the first embodiment is
It has a flat body 10 with a top plate 15 on top 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 80 arranged below the IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. The cover 70 is provided with 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 the lower surface of the fan case, and has an air outlet on the side surface for blowing cooling air.
A first air passage F1 formed below the cover 70, a heat sink 82 arranged on the upper surface of the inverter circuit board 80, and the heat sink on the first horizontal plane HP1 crossing the upper and lower center portions of the air outlet. The power control switching element 93 attached to the 82 is arranged, respectively.
The exhaust window 52A for discharging the air after passing through the IH carp 17L and 17R is arranged on the second horizontal plane HP2 above the first horizontal plane HP1.

Due to this configuration, the heat sink 82 of the inverter circuit board 80 can be effectively cooled by the cooling air RF1 that horizontally flows 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 cooking device 1 of the first embodiment has the configuration of the sixth invention.
That is, the built-in type composite cooking cooker 1 in the first embodiment is
It is installed in the kitchen furniture,
An upper unit 100 having a first heating source 17 for heating the heated object via a top plate 15 on which the heated object is placed and supported by the kitchen furniture 2 and the upper unit 100.
A lower unit 200, which is installed below the upper unit 100 and has a heating chamber 113 whose front opening is openably closed by a door 114, is provided.
The lower unit 200 includes a microwave heating device 120 that supplies microwaves to the heating chamber 113, an oven heating device 140 that heats the heating chamber, and a cooling fan 128 for cooling the microwave heating device. With 129 and
The microwave generation source 122 of the microwave heating device 120 is arranged along 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 is the back surface of the heating chamber 113. Installed sideways so that it protrudes to the side,
On the back side of the heating chamber 113, a feeding port 180 leading to the inside of the heating chamber 113 and an antenna case 124 into which microwaves from the microwave generation source 122 are introduced are provided.
In the antenna case 124, a rotating antenna 125 for propagating the microwave oscillated from the microwave generation source 122 to the space in the heating chamber 113 via the feeding port 180 is arranged. It is a configuration that has been made.

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

The cooking device 1 of the first embodiment has the configuration of the seventh invention.
That is, the built-in type composite cooking cooker 1 in the first embodiment is
It is installed in the kitchen furniture 2 and
An upper unit 100 having an induction heating source 17 for heating the heated object via a top plate 15 on which the heated object is placed and supported by the kitchen furniture 2 and the upper unit 100.
A lower unit 200, which is installed below the upper unit 100 and has a heating chamber 113 whose front opening is openably closed by a door 114, is provided.
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, an oven heating device 140 that heats the heating chamber 113, and the micro. A cooling fan 128, 129, and a cooling fan 128, 129, are provided to cool 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 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. Installed sideways so that it protrudes into the
An antenna case 124 into which microwaves from the microwave generation source 122 are introduced is provided on the back side of the heating chamber 113.
In the antenna case 124, the microwave oscillated from the microwave generation source 122 is propagated to the space in the heating chamber 113 via the feeding port 180 provided on the back surface of the heating chamber 113. A rotating antenna 125 is placed and
The operation of the induction heating source 17, the microwave heating device 120, the oven heating device 140, and the cooling fan 128, 129 is 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 the space on the back side from one side wall surface (right side surface) of the heating chamber 113. These devices can be incorporated in the lower unit 200 in a narrow internal space.

Further, 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 a built-in type composite heating cooker 1 in which cooperation of heating sources is surely executed.

The cooking device 1 of the first embodiment has the configuration of the eighth invention.
That is, the built-in type composite cooking cooker 1 in the first embodiment is
It is installed in the kitchen furniture 2 and
An upper unit 100 having an induction heating source 17 for heating the heated object via a top plate 15 on which the heated object is placed and supported by the kitchen furniture 2 and the upper unit 100.
A lower unit 200, which is installed below the upper unit 100 and has a heating chamber 113 whose front opening is openably closed by a door 114, is provided.
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 separated in the front-rear direction.
Air is sucked from the outside of the lower unit 200 below the first inverter circuit board 121 and below the heat radiating portion 122H of the microwave generation source 122, and the air is taken into the first inverter circuit. The front cooling fan 128 and the rear cooling fan 129, which are individually supplied to the substrate 121 and the heat radiating unit 122H, are arranged respectively.

For 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 of the narrow internal space on one side wall surface (right side surface) of the heating chamber 113. Can be made to.

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

The cooking device 1 of the first embodiment has the configuration of the tenth invention.
That is, the built-in type composite cooking cooker 1 in the first embodiment is
It has a first heating source 17 that heats the object to be heated via a top plate 15 on which the object to be heated is placed, and a flat main body 10 whose upper surface opening is closed by the top plate 15. The upper unit 100, which is supported by the 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 and the lower case 101, which form the outer shell of the main body 10, are each formed of a thin metal plate.
Lateral vertical walls 16L and 16R extending in the vertical direction are formed at the peripheral end of the upper case 16.
The lower case 101 has an opening on the entire upper surface, 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, the upper case 101 and the lower case 101 are strengthened as an integrated structure by two means of fitting and coupling. Therefore, even if the structure is light with a thin metal plate, it is possible to maintain a highly reliable housing structure that can withstand long-term use. In addition, the "fitting" referred to in the first embodiment may differ from the inner dimension of the lower case 101, which is the outer side, by the outer dimension of the upper case 16 inserted inside by about several mm. It does not have to be in close contact with the whole. Further, when there is almost no dimensional difference as such, there is a concern that it may be difficult to insert the upper case 16 into the upper opening of the lower case 101 at the time of assembly.

The cooking device 1 of the first embodiment has the configuration of the eleventh invention.
That is, the built-in type composite cooking cooker 1 in the first embodiment is
A top plate 15 on which the 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 in which the opening on the upper surface is closed by the top plate 15. The upper unit 100, which has 16 and is supported by the kitchen furniture 2, and
A heating chamber 113 to which microwaves are supplied and a lower unit 200 in which a microwave heating device 120 is built in a lower case 101 are provided.
In the 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.

Since this configuration does not require a dedicated partition plate for covering the ceiling of the lower case 101 or a structure such as a lid plate, the manufacturing cost can be significantly reduced and the weight can be reduced.
Further, immediately below the rear of the upper case 101, a cavity 104 having a large planar size and a large depth dimension BH is formed behind the heating chamber 113, so that the waveguide 123 and the power supply circuit board are formed in the cavity. 127 (including the circuit board of the microwave heating control unit 130 and the heating chamber control unit 159) can be accommodated.

Further, as shown in FIG. 7, when the cavity 104 is located directly below the filter board circuit 54, the cavity 104 can be used when an external commercial AC power supply 99 is pulled into the cooking cooker 1 with a power cord. It's convenient.

(Other features)
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 constituting the microwave heating device 120 are arranged in a straight line in the front-rear direction as shown in FIG. 7 and adjacent to each other so as to be in contact with each other, two independent cooling air RF5 , The structure that guides RF6 can be realized easily and compactly.
(2) A structure that guides two independent cooling air 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 and adjacent to each other as shown in FIG. Can be easily and compactly realized.
(3) Important parts 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 constituting the microwave heating device 120 are placed on the right side of the heating chamber 113. Since it is centralized, when inspection or repair of these parts is required, it is convenient because it can be handled only on the right side of the lower case 101. For example, if the side vertical wall 101R constituting the right outer shell of the lower case 101 is removed, the entire parts described above are exposed, and workability such as maintenance and inspection can be easily performed.

Embodiment 2.
26 to 54 show the cooking apparatus according to the second embodiment. The second embodiment is characterized in that the strength of the cooking device 1 is increased by devising the connecting structure of the upper unit 100 and the lower unit 200. The same or corresponding parts as those in FIGS. 1 to 25 may be designated by the same reference numerals, and duplicate description may be omitted.

FIG. 26 is a perspective view of the built-in induction heating cooker according to the second embodiment of the present invention, which is in a state before being installed in 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. FIG. 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.

FIG. 31 is a left side view of the induction heating cooker shown in FIG. 26. FIG. 32 is a back view (rear surface) 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. FIG. 34 is a vertical 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 sectional view taken along line XX of the induction heating cooker shown in FIG. 29. FIG. 38 is a perspective view showing the entire upper unit in the induction heating cooker shown in FIG. 26. FIG. 39 is a perspective view of the upper unit in the induction heating cooker shown in FIG. 26 with the top plate removed.

FIG. 40 is a perspective view of the upper unit in the induction heating cooker shown in FIG. 26 with the top plate and the IH coil removed. FIG. 41 is a perspective view of the upper unit of the induction heating cooker shown in FIG. 26 with the top plate, the IH coil, and the cover removed. FIG. 42 is a reference perspective view showing the flow of cooling air in FIG. 41. FIG. 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. 26. 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 a state where 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 view (bottom surface) of the upper unit of the induction heating cooker shown in FIG. 26. FIG. 47 is a vertical sectional view taken along line XX of the upper unit shown in FIG. 43. FIG. 48 is a vertical sectional view taken along line XX of the upper unit shown in FIG. 43. FIG. 49 is a vertical sectional view taken along line ZZ of the upper unit shown in FIG. 43.

FIG. 50 is a perspective view 1 showing a disassembled state of the induction heating cooker shown in FIG. 26. FIG. 51 is a perspective view 2 showing a disassembled state of the induction heating cooker shown in FIG. 26. FIG. 52 is a perspective view of a connecting member (reinforcing member) of the induction heating cooker shown in FIG. 26. FIG. 53 is a perspective view showing an intermediate stage of disassembly of the lower unit of the induction heating cooker shown in FIG. 26. FIG. 54 is a cross-sectional view illustrating a main part of the lower unit of the induction heating cooker shown in FIG. 26.

The points particularly different from those of the first embodiment will be described with reference to the respective drawings.
In FIG. 26, 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 also has a 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 surface, and the left side surface of the lower unit 200 in a series. That is, 118R is a right vertical portion that overlaps the right side surface of the front portion of the lower unit 200 in close contact, 118L is a left vertical portion that overlaps the left side surface of the front portion of the lower unit 200 in close contact, and 118M is the right vertical portion. It is a central flat portion formed in a series in 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 in the front portion of the lower case 101 in close contact with the lower surface.

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

118P is a concave portion or a convex portion integrally formed by a press working die at the time of pressing the connecting member 118, and as shown in FIG. 52, the left vertical portion 118L, the right vertical portion 118R and the central flat portion 118M have three rows. It is formed one by one. The concave portion or the 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 the door 114 in the door closing direction when the door 114 is closed. 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 in the front-rear direction through the through hole 117. The door structure of the high-frequency heating device using the arm 116 is introduced in, for example, Japanese Patent Application Laid-Open No. 2002-39541, Japanese Patent Application Laid-Open No. 2010-181106, Japanese Patent Application Laid-Open No. 2007-218544, and the like. Is omitted.

In FIG. 27, 176 is a pair of hinges provided on the left and right sides, and the door 114 is rotatably supported by 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 described above are supported from below by a roller (not shown) or a sliding member (not shown) rotatably provided below the back side of the through hole 117, and the door 114 is opened and closed. Occasionally, the arm 116 moves back and forth while in contact with the upper surface of the roller or sliding member.

Reference numerals 112 are front covers provided on both the left and right sides of the front surface of the lower unit 200, and project to the left and right larger than the lateral width of the lower case 101. When the cooking device 1 is installed in the kitchen furniture 2, the front cover 112 serves to fill the gap with the kitchen furniture 2 as much as possible.

Reference numeral 198 is a metal support metal fitting, and as shown in FIG. 53, has a length extending over the entire width of the lower case 101. 198H is a horizontal portion that is overlapped on the upper shielding plate 197 so as to be in close contact with the upper shielding plate 197, and 198V is a vertical portion formed by bending the rear end portion of the horizontal portion 198H in the vertical direction. The support metal fitting 198 is thus composed of a horizontal portion 198H and a vertical portion 198V.

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

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

In FIG. 29, L1 shows the lateral width dimension of the end portion 102E of the exhaust duct 102. LW indicates the width dimension of the lower space of the exhaust cover 19 which is rich in breathability. Since the lower part 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 above 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" means a dimension excluding the dimension of the outer peripheral edge covered with the decorative frame 25 or the like surrounding the circumference of the top plate 15. The effective width D4 in the front-rear direction of the top plate 15 is 413 mm.

What is shown in FIG. 29 is an example in which the 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 the effective width of the top plate 15 in the left-right direction, which is 580 mm.
W3 is the maximum width in the left-right direction of the cooking device 1 and is 599 mm. The maximum width of the upper unit in the left-right direction and the maximum width of the lower unit 200 including the front cover 112 in the left-right direction 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 only one 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.

In FIG. 30, 187 is a screw for fixing the connecting member 118 to the side vertical walls 101L and 101R of the lower case 101, and 16P is formed on the side vertical walls 16L and 16R and the rear vertical wall 16B of the upper case 16. It is a vertical claw (see FIGS. 32, 43 and 45). Reference numeral 148 is a screw (fixture) for fixing the connecting member 118 to the side vertical walls 101L and 101R of the lower case 101. Reference numeral 183 is 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. Will be done.

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

The claw 16P formed at the intermediate position and the rear side engages with the rim of the square or rectangular through hole (engagement hole) 101N formed in the lateral vertical wall 101R of the lower case 101, and the claw 16P is in this state as it is. It is fixed by a screw 183. The through hole 101N is also formed in the back plate 101B of the lower case 101, and the claw 16P formed in the rear vertical wall 16B of the upper case 16 engages with the through hole 101N.

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

Reference numeral 179 is a fixing bracket, and an intermediate portion is fixed to the support base 179B (see FIG. 53) so that the rear end portion swings up and down in the rear portion of the upper unit 100. When the heating cooker 1 is installed in the installation port 2A of the kitchen furniture 2, by closing the "dedicated screw" housed in the support base 179B, the rear end portion of the fixing bracket 179 is lifted upward and installed. Engage with the underside of mouth 2A. As a result, the cooking cooker 1 is fixed so as not to be lifted. When the "dedicated screw" h and the exhaust cover 19 are removed, it can be visually recognized that the inside of the upper case 16 is inside, so that the installer can easily perform such an operation.

In FIG. 32, 101B is a back plate made of a metal plate constituting the back surface of the lower case 101. Reference numeral 101K is a bent portion formed by bending the back plate 101B during press working, and below this is the inclined portion 101C (inclined portion 111 of the main body 110).

In FIG. 33, DP2 shows the dimensions from the side vertical wall 16L of the upper case 16 to the side vertical wall 101L of the lower case 101. As is clear from FIG. 33, there is a lateral vertical wall 101L on the right side of the center point of the ventilation hole 64 of the upper case 16. 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, 131 is a door open / close detection mechanism, which is provided with the closure detection unit 139 described in the first embodiment. The door open / close detection mechanism 131 is configured by mounting a latch switch 132A, a door switch 132B, or the like on a 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, 145 is a dedicated saucer used inside the heating chamber 113, and is made of highly heat-resistant plastic, porcelain, glass, or the like. The saucer 145 has external dimensions such that it can be freely taken in and out from the opening 113A of the heating chamber 113.

Reference numeral 147 is a tableware made of porcelain or a highly heat-resistant material placed on the saucer 145. Reference numeral 101P is a reinforcing convex portion integrally formed on the wall surface of the heating chamber 113 by press working.
When microwave heating is not used, the tableware 147 may be made of metal. For example, an induction heating source 17 is used to bake food (eg, a hamburger) to some extent on a frying pan (not shown), after which the frying pan is moved into the heating chamber 113 by an upper heater 163A, a lower heater 163B. It may be cooked by heating (this is a kind of cooperative cooking).

LA is a "protruding dimension" from the back wall (rear wall surface) 113B of the heating chamber 113 to the end of the antenna driving motor 126. Reference numeral 154 is a case C formed of an electrically insulating material, which has a “box-shaped” shape that is long in the left-right direction and thin in the front-back direction as shown in FIG. 53.

The power supply circuit board 127 of the microwave heating control unit 130 is housed in the case C154. The control circuit board (not shown) of the heating chamber control unit 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 FIGS. 35 and 36, the outer shell of the case C is shown by a 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, 30W is a display window, and is formed at a position corresponding to the central display unit 30 on the operation board 41.

31LW and 31RW are display windows, respectively. The display window is formed at a position corresponding to the left side display unit 31L and the right side display unit 31R on the operation board 41.

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

The coil base 17C is integrally formed of a highly heat-resistant plastic material. Further, the coil base 17C is circular as a whole according to the shapes of the IH coils 17L and 17R, but is provided with a plurality of arms 17CH extending radially from the center. In the second embodiment, the number of arms 17CH is eight. A gap that becomes a large ventilation space is formed between each arm 17CH.

17F is a ferrite plate installed between two adjacent arms 17CH. In the IH coil 17L on the left side, the TS3 is a contact-type temperature sensor such as a thermistor.
One temperature sensor TS3 is installed in 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 away from the center of the IH coil 17L.

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

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

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

In FIG. 40, 57 is a transformer, which is one of the important electrical 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 dimension W11. A temperature sensor TS5 supported by the coil base 17C on the IH coil 17L side is arranged in this notched portion. That is, the temperature sensor TS5 and the cover 70 are notched so as not to come into contact with each other.

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

As is clear from FIG. 41, the 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 view (bottom surface) 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.

In FIGS. 46 and 47, W4 is the maximum width dimension in the left-right direction of the upper unit 100, 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 in the central portion in order to increase the 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 that is a horizontal plane. 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 is in close proximity to or in contact with 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 from above by the top plate 15 and the like of the upper unit 100 can be received by the support piece 118R of the connecting member 118.

Further, even with the support piece 118L on the left side, when the upper unit 100 and the lower unit 200 are connected, the support piece 118L is close to or abuts on the lower surface of the flange 16A of the upper unit 100. Therefore, the upper unit 100 is firmly supported from below by the lower unit 200.

In FIG. 51, 101M is a notch portion largely formed in the front portion of the lateral vertical wall 101L of the lower case 101. W5 is the opening width (horizontal width dimension) of the cutout portion 101M, and is about 50 mm to 80 mm. However, the opening width W5 is large enough to allow inspection and repair of the door open / close detection mechanism 131. For example, the support 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 (horizontal width dimension) W5 of the notch portion 101M. That is, when the connecting member (reinforcing member) 118 is fixed to the lower case 101, the cutout portion 110M is closed at the same time. As a result, in the completed cooking device 1, no foreign matter invades from the notch 110M.

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

Summary of Embodiment 2.
As is clear from the above description, the cooking utensil 1 of the second embodiment has the configuration of the first invention.
That is, the cooking device 1 in the second embodiment is
It has a flat body 10 with a top plate 15 on top on which the object to be heated is placed.
Inside the main body, there are IH coils 17L and 17R for heating the 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 are provided.
The first cooling fan 60 has a rotary blade that rotates about a vertical axis, and faces the inlet of a first air passage F1 formed between the inverter circuit board 80 and the cover 70. ,
The first cooling fan 60 is characterized in that the first cooling air RF1 is supplied from the inlet FI at one end of the first air passage F1 to the outlet FO at the other end. be.

Due to this configuration, the IH coil installation space CK and the installation space of the inverter circuit board 80 are vertically partitioned by the cover 70, and the inverter circuit board 80 can be effectively cooled.

The cooking device 1 of the second embodiment has the configuration of the second invention.
That is, the cooking device 1 in the second embodiment is
It has a flat body 10 with a top plate 15 on top on which the object to be heated is placed.
Inside the main body, the left IH coil 17L and the right IH coil 17R, which are arranged at two locations on the left and right to heat the object to be heated on the top plate 15, are common to these two IH coils. There is 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 a cover 70 installed near the left wall surface of the main body. A first cooling fan 60 for introducing cooling air from a ventilation hole formed in the housing is provided.
The cover 70 is installed in a series from the first cooling fan 60 to the right side of the IH coil 17L on the left side.
The first cooling fan 60 has a rotary blade that rotates 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.
An exhaust window 52A is provided at the inner rear portion of the main body 10 so that the first cooling air FR1 emitted from the first air passage F1 is introduced after passing through the space above the cover 70.
The formation position of the exhaust window 52A is configured to be 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 partitioned by the cover 70, and the inverter circuit board 80 can be effectively cooled. Moreover, the cooling air from the air passage F1 flows from the left side to the right side, passes directly under the cover 70, and then advances to the upper space to cool the upper right IH coil 17R 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 cooking device 1 of the second embodiment has the configuration of the third invention.
That is, the cooking device 1 in the second embodiment is
It has a flat body 10 with a top plate 15 on top on which the object to be heated is placed.
Inside the main body, the IH coils 17L and 17R for heating the object to be heated on the top plate 15, the inverter circuit board 80 arranged below the IH coils 17L and 17R, and the IH coils 17L and 17R The cover 70 installed between the inverter circuit board 80 and the first cooling fan 60 and the second cooling fan 61 for introducing cooling air from the outside of the main body 10, and the user's operation input. Equipped with an input operation unit 40 that accepts
The first cooling fan 60 has a rotary blade that rotates about a vertical axis.
The first cooling fan 60 faces the inlet FI of the first air passage F1 formed between the inverter circuit board 80 and the cover 70, and the first cooling fan 60 faces 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 to 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 supplies the second cooling air FR2 to the input operation unit 40.

Due to 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 cooking device 1 of the second embodiment has the configuration of the fourth invention.
That is, the cooking device 1 in the second embodiment is
It has a flat body 10 with a top plate 15 on top on which the object to be heated is placed.
Inside the main body 10, an IH coil that heats an object to be heated on the top plate 15, an inverter circuit board 80 arranged below the IH coil, and 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 electric power from a commercial power source to generate a necessary power source.
The first cooling fan 60 has a rotary blade that rotates about a vertical axis.
The first cooling fan 60 faces the inlet of the first air passage F1 formed between the inverter circuit board 80 and the cover 70, and the first cooling fan 60 faces the first air passage F1. The configuration is such that 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 side opposite to the first cooling fan 60 with the cover 70 interposed therebetween.

Due to 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 thereof, the electric component 85 mounted on the power supply circuit board 55 can be cooled.

The cooking device 1 of the second embodiment has the configuration of the fifth invention.
That is, the cooking device 1 in the second embodiment is
It has a flat body 10 with a top plate 15 on top 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 80 arranged below the IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. The cover 70 is provided with 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 the lower surface of the fan case, and has an air outlet on the side surface for blowing cooling air.
A first air passage F1 formed below the cover 70, a heat sink 82 arranged on the upper surface of the inverter circuit board 80, and the heat sink on the first horizontal plane HP1 crossing the upper and lower center portions of the air outlet. The power control switching element 93 attached to the 82 is arranged, respectively.
The exhaust window 52A for discharging the air after passing through the IH carp 17L and 17R is arranged on the second horizontal plane HP2 above the first horizontal plane HP1.

Due to this configuration, the heat sink of the inverter circuit board 80 can be effectively cooled by the cooling air RF1 flowing horizontally 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 and 17R, and reaches the exhaust window 52A in the horizontal direction, so that the IH coils 17L and 17R portions can also be cooled. ..

The cooking device 1 of the second embodiment has the configuration of the sixth invention.
That is, the built-in type composite cooking cooker 1 in the second embodiment is
It is installed in the kitchen furniture,
An upper unit 100 having a first heating source 17 for heating the heated object via a top plate 15 on which the heated object is placed and supported by the kitchen furniture 2 and the upper unit 100.
A lower unit 200, which is installed below the upper unit 100 and has a heating chamber 113 whose front opening is openably closed by a door 114, is provided.
The lower unit 200 includes a microwave heating device 120 that supplies microwaves to the heating chamber 113, an oven heating device 140 that heats the heating chamber, and a cooling fan 128 for cooling the microwave heating device. With 129 and
The microwave generation source 122 of the microwave heating device 120 is arranged along 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 is the back surface of the heating chamber 113. Installed sideways so that it protrudes to the side,
On the back side of the heating chamber 113, a feeding port 180 leading to the inside of the heating chamber 113 and an antenna case 124 into which microwaves from the microwave generation source 122 are introduced are provided.
In the antenna case 124, a rotating antenna 125 for propagating the microwave oscillated from the microwave generation source 122 to the space in the heating chamber 113 via the feeding port 180 is arranged. It is a configuration that has been made.

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

The cooking device 1 of the second embodiment has the configuration of the seventh invention.
That is, the built-in type composite cooking cooker 1 in the second embodiment is
It is installed in the kitchen furniture 2 and
An upper unit 100 having an induction heating source 17 for heating the heated object via a top plate 15 on which the heated object is placed and supported by the kitchen furniture 2 and the upper unit 100.
A lower unit 200, which is installed below the upper unit 100 and has a heating chamber 113 whose front opening is openably closed by a door 114, is provided.
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, an oven heating device 140 that heats the heating chamber 113, and the micro. A cooling fan 128, 129, and a cooling fan 128, 129, are provided to cool 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 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. Installed sideways so that it protrudes into the
An antenna case 124 into which microwaves from the microwave generation source 122 are introduced is provided on the back side of the heating chamber 113.
In the antenna case 124, the microwave oscillated from the microwave generation source 122 is propagated to the space in the heating chamber 113 via the feeding port 180 provided on the back surface of the heating chamber 113. A rotating antenna 125 is placed and
The operation of the induction heating source 17, the microwave heating device 120, the oven heating device 140, and the cooling fan 128, 129 is 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 the space on the back side from one side wall surface (right side surface) of the heating chamber 113. These devices can be incorporated in the lower unit 200 in a narrow internal space.

Further, 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 a built-in type composite heating cooker 1 in which cooperation of heating sources is surely executed.

The cooking device 1 of the second embodiment has the configuration of the eighth invention.
That is, the built-in type composite cooking cooker 1 in the second embodiment is
It is installed in the kitchen furniture 2 and
An upper unit 100 having an induction heating source 17 for heating the heated object via a top plate 15 on which the heated object is placed and supported by the kitchen furniture 2 and the upper unit 100.
A lower unit 200, which is installed below the upper unit 100 and has a heating chamber 113 whose front opening is openably closed by a door 114, is provided.
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 separated in the front-rear direction.
Air is sucked from the outside of the lower unit 200 below the first inverter circuit board 121 and below the heat radiating portion 122H of the microwave generation source 122, and the air is taken into the first inverter circuit. The front cooling fan 128 and the rear cooling fan 129, which are individually supplied to the substrate 121 and the heat radiating unit 122H, are arranged respectively.

For 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 of the narrow internal space on one side wall surface (right side surface) of the heating chamber 113. Can be made to.

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

The cooking device 1 of the second embodiment has the configuration of the ninth invention.
That is, the built-in type composite cooking cooker 1 in the second embodiment is
It has a first heating source 17 that heats the object to be heated via a top plate 15 on which the object to be heated is placed, and a flat main body 10 whose upper surface opening is closed by the top plate 15. The upper unit 100, which is supported by the kitchen furniture,
A lower unit 200 containing a heating chamber 113 to which microwaves are supplied and a microwave generation source 122, and
A connecting member 118 for connecting the upper unit 100 and the lower unit 200 is provided.
The connecting 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, and is attached to both the lower unit 200 and the upper unit 100. , Each is a combined configuration.

Due to this configuration, the upper unit 100 and the lower unit 200 can have a strong integrated structure even if the microwave heating device 120 is provided on the lower unit 200 side. For this reason, it is possible to prevent the structure from being deformed with long-term use, the degree of adhesion between the heating chamber 113 and the door is lowered due to the deformation, and it is possible to prevent a situation in which microwaves are leaked, which is safe. Can provide a high-quality cooker 1.

The cooking device 1 of the second embodiment has the configuration of the tenth invention.
That is, the built-in type composite cooking cooker 1 in the second embodiment is
It has a first heating source 17 that heats the object to be heated via a top plate 15 on which the object to be heated is placed, and a flat main body 10 whose upper surface opening is closed by the top plate 15. The upper unit 100 supported by the kitchen furniture 2 and
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 and the lower case 101, which form the outer shell of the main body 10, are each formed of a thin metal plate.
Lateral vertical walls 16L and 16R extending in the vertical direction are formed at the peripheral end of the upper case 16.
The lower case 101 has an opening on the entire upper surface, 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, the upper unit 100 and the lower unit 200 can have a strong integrated structure even if the microwave heating device 120 is provided on the lower unit 200 side. Therefore, it is possible to prevent the structure from being deformed with long-term use, and for example, it is possible to prevent a situation in which the degree of adhesion between the heating chamber 113 and the door is lowered due to the deformation and microwaves are leaked. It is possible to provide a highly safe cooking device 1.

The cooking device 1 of the second embodiment has the configuration of the eleventh invention.
That is, the built-in type composite cooking cooker 1 in the second embodiment is
A top plate 15 on which the 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 in which the opening on the upper surface is closed by the top plate 15. The upper unit 100, which has 16 and is supported by the kitchen furniture 2, and
A heating chamber 113 to which microwaves are supplied and a lower unit 200 in which a microwave heating device 120 is built in a lower case 101 are provided.
In the 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.

Since this configuration does not require a dedicated partition plate for covering the ceiling of the lower case 101 or a structure such as a lid plate, the manufacturing cost can be significantly reduced and the weight can be reduced.
Further, immediately below the rear of the upper case 101, a cavity 104 having a large planar size and a large depth dimension BH is formed behind the heating chamber 113, so that the waveguide 123 and the power supply circuit board are formed in the cavity. 127 (including the circuit board of the microwave heating control unit 130 and the heating chamber control unit 159) can be accommodated.

Further, if the cavity 104 is located directly below the filter board circuit 54, the cavity 104 can be conveniently used when the external commercial AC power supply 99 is drawn into the cooking device 1 by the power cord.

The cooking device 1 of the second embodiment has the configuration of the twelfth invention.
That is, the built-in type composite cooking cooker 1 in the second embodiment is
A top plate 15 on which the 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 in which the upper surface opening is closed by the top plate 15. The upper unit 100, which has, and is supported by the kitchen furniture 2,
A lower unit 200 having a heating chamber 113 heated from above and below by the upper heater 163A and the lower heater 163B is provided.
The lower unit 200 has a lower case 101 constituting an outer shell, a door for opening and closing the opening 113A of the heating chamber 113, and an arm 116 for supporting the door 113 to the lower unit 200.
The lower unit 200 includes a microwave oscillation source 122 and a case A150 having an inverter circuit board 121 that supplies high-frequency power to the microwave oscillation source 122 on the right side or the left side of the heating chamber 113. Prepare,
The case A150 is arranged on the front side 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 open / close detection mechanism 131 of the door 114 are housed inside the space 144 in an adjacent state and so that the door open / close detection mechanism 131 is on the outside.

Because of this configuration, the arm 116 moves in the front-rear direction as the door 114 opens and closes, so that a relatively large installation space is required. However, the arm 116 is placed in front of the microwave source 122. Since it is housed in 144, the microwave generation source 122 and its related structures can be centrally arranged behind this space 144, and various structures can be efficiently arranged within the external dimensions required by the built-in method. The cooked cooker 1 can be provided.

Embodiment 3.
55 to 56 show the cooking apparatus according to the third embodiment. This embodiment is characterized in that the arm 116 that supports the door 114 of the cooking cooker 1 and the structure for facilitating maintenance and inspection of the door open / close detection mechanism 131 are improved. The same or corresponding parts as those in FIGS. 1 to 54 may be designated by the same reference numerals, and duplicate description may be omitted.

FIG. 55 is a cross-sectional view of a main part showing the right front part of the lower unit 200, and is shown in a state where the door 114 is closed. 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 inside, which is entirely made of plastic. Inside the case A150, an inverter circuit board 121 (not shown) is vertically installed.

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

Between the case A150 and the front plate 101F, a space 144 surrounded from both sides by a side vertical wall 101R and a right partition plate 166R is formed.
Reference numeral 137 is a support plate to which a latch switch 132A (not shown), a door switch 132B, and a monitor switch 133 (not shown) are collectively attached.
The support plate 137 is vertically installed 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 is installed to always pull the arm 116 on the rear side and diagonally downward with respect to the horizontal plane.

The 101M is a notch portion formed in the side vertical wall 101R, and the 119 is a lid plate that closes the notch 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 by a screw (not shown) or the like.

When a repair company or the like removes the lid plate 119 during maintenance and inspection of the cooking cooker 1, the door open / close detection mechanism 131 can be visually recognized through the notch 101M. Further, by removing the support plate 137 from the outside of the notch 101M, work such as 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 when viewed from the notch 101M, the above work can be easily performed.

In the third embodiment, since the cutout portion 101M is provided, it is not necessary to remove the side vertical wall 101R when maintaining and inspecting the door open / close detection mechanism 131, but the side vertical wall If only the 101R can be separated, it is not necessary to provide the notch 101M.

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

The cooking device 1 of the third embodiment has the configuration of the twelfth invention.
That is, the built-in type composite cooking cooker 1 of the third embodiment is
A top plate 15 on which the 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 in which the upper surface opening is closed by the top plate 15. The upper unit 100, which has, and is supported by the kitchen furniture 2,
A lower unit 200 having a heating chamber 113 heated from above and below by the upper heater 163A and the lower heater 163B is provided.
The lower unit 200 has a lower case 101 constituting an outer shell, a door for opening and closing the opening 113A of the heating chamber 113, and an arm 116 for supporting the door 113 to the lower unit 200.
The lower unit 200 includes a microwave oscillation source 122 and a case A150 having an inverter circuit board 121 for supplying high-frequency power to the oscillation source 122 on the right side or the left side of the heating chamber 113.
The case A150 is arranged on the front side 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 open / close detection mechanism 131 of the door 114 are housed inside the space 144 in an adjacent state and so that the door open / close detection mechanism 131 is on the outside.

Since the arm 116 moves in the front-rear direction as the door 114 opens and closes, it requires a relatively large installation space, but since the arm 116 is housed in the space 144 in front of the microwave generation source 122. In the back of this space 144, the microwave generation source 122 and its related structures can be centrally arranged, and various structures are efficiently arranged within the external dimensions required by the built-in type. Can be provided.

Conventionally, the arm 116 that supports the door 114 and moves as the door opens and closes 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 close to the heating chamber 113, and the door open / close detection mechanism 131 is intensively arranged on the outside of the arm 116, that is, on the side opposite to the heating chamber 113. Therefore, in combination 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, microwaves are efficiently placed in the lateral space of the heating chamber 113 as a whole. It can store the parts required for heating, and can compactly design a built-in compound heating cooker with limited external dimensions.

Further, the third cooling fan 128 and the fourth cooling fan 129 are arranged at positions directly below the case A150 and directly below the magnetron 122, and are inside the case A150 by the cooling air from the third cooling fan 128. By adopting a 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 unified. The internal configuration of the lower case 200 can be simplified or made more compact.

Embodiment 4.
FIG. 57 shows the cooking utensil according to the fourth embodiment. This embodiment is characterized in that the connecting member 118 that connects the upper unit 100 and the lower unit 200 of the cooking device 1 is improved. The same or corresponding parts as those in FIGS. 1 to 56 may be designated by the same reference numerals, and duplicate description may be omitted.

FIG. 57 is a vertical sectional view of the same portion as that of 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 in 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 to the lateral vertical portion 101R by screws 148 at a plurality of locations 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 the screw 148.

A large number of through holes 118H are formed in the left vertical portion 118L so as not to obstruct 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 member 118 is fixed to the left and right side surfaces of the lower unit 200, the support pieces 118L and 118R come close to or abut against the lower surface of the flange 16A of the upper unit 100. Therefore, the load received from above by the top plate 15 and the like of the upper unit 100 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 component as compared with the connecting member 118 of the third embodiment. Therefore, it is advantageous in terms of manufacturing cost, and the work of fixing the connecting member 118 to the left and right side surfaces of the lower unit 200 can be easily performed 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 closed in normal times by the right vertical portion 118R. When the door open / close 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 cooking device 1 of the fourth embodiment has the configuration of the tenth invention.
That is, the built-in type composite cooking cooker 1 of the fourth embodiment is
It has an induction heating source 17 that heats the object to be heated via a top plate 15 on which the object to be heated is placed, and a flat main body 10 whose upper surface opening is closed by the top plate, and is a kitchen. The upper unit 100 supported by furniture 2 and
A heating chamber 113 to which microwaves are supplied and a lower unit 200 in which a microwave generation source 122 is built in a lower case 101 are provided.
The upper case 16 and the lower case 101, which form the outer shell of the main body 10, are each formed of a thin metal plate.
Lateral vertical walls (superimposed portions) 16L and 16R extending in the vertical direction are integrally formed at the peripheral end of the upper case 16.
The lower case 101 has an opening on the entire upper surface, 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 unit 100 and the lower unit 200 can have a strong integrated structure even if the microwave heating device 120 is provided on the lower unit 200 side. Therefore, it is possible to prevent the structure from being deformed with long-term use, and for example, it is possible to prevent a situation in which the degree of adhesion between the heating chamber 113 and the door 114 is lowered due to the deformation and microwaves are leaked. , A highly safe cooking device 1 can be provided.

Embodiment 5.
FIG. 58 shows the cooking apparatus according to the fifth embodiment. In this embodiment, a gap GP12 is provided between the upper unit 100 and the lower unit 200 of the cooking device 1, and the connecting member 118 for connecting the exhaust fan is improved inside the lower unit 200. Is. The same or corresponding parts as those in FIGS. 1 to 57 may be designated by the same reference numerals, and duplicate 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 constituting the substantially 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 a connecting member 118 or the like. In addition, N is a heated object 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 periphery (front and back, left and right). It is sufficient that the size of the gap GP12 is several mm or less. If it is too large, it becomes necessary to reduce the external dimensions of the upper unit 100 and the lower unit 200. This gap GP12 is provided in order 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.

Reference numeral 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 provided long in the left-right direction and is installed horizontally. And a rotary wing is attached around the rotation axis.

Reference numeral 102 denotes an exhaust duct having an opening connected to one end on the exhaust port side of the exhaust fan 155 and extending vertically to the desired position directly under the exhaust cover 19. The 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 flowing through the IH coil installation space CK of the upper unit 100 passes through the exhaust window 52A. Then, it is guided by the exhaust flow discharged from the exhaust duct 102 and discharged to the outside.

In the heating chamber 113, microwaves from the magnetron 122 (not shown) of the microwave heating device 120 are introduced. 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 close to the door 114, and is configured by providing a plurality of holes having a small diameter.
Reference numeral 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 portion, respectively.

What is shown by the broken line 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 guided inside 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 the two systems, and finally are forcibly discharged to the outside by the exhaust fan 155. Will be done. Therefore, there is no concern that the cooling air that has cooled the microwave heating device 120 stays inside the lower unit 200.

The 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 is used for controlling the atmospheric temperature of the heating chamber 113 and detecting the overheated state.

Reference numeral 157 is a sealing material for suppressing leakage of microwaves from between the door 114 and the front plate 101F of the lower unit 200, and is elastic microwave-absorbing rubber or the like.

GP13 is a gap 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, since the gap GP12 is formed between the upper unit 100 and the lower unit 200 in a connected state, the thermal influence from the heating chamber 113 of the lower unit 200 is formed. Can be reduced as much as possible, and it is possible to prevent the filter circuit board 54, the power supply circuit board 55, etc. built in the upper unit 100 from being heated from below.

Embodiment 6.
FIG. 59 shows the built-in type composite cooking cooker according to the sixth embodiment. It should be noted that the same or corresponding parts as those of the configurations of the respective embodiments described in FIGS. 1 to 58 are designated by the same reference numerals.

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

Among the above-mentioned six control devices, the integrated control device MC controls the entire control of the cooking device 1. It is the control device 90 that controls the induction cooking in response to the command from the integrated control device MC. Further, the control device 105 controls microwave cooking and oven cooking. This 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.

The two control devices 90 and 105 described above may be called a slave (SLAVE) microcomputer because they perform predetermined control to the integrated control device MC according to a command and return the processing result to the integrated control device MC. 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. The left side input control device 24 that processes the input and the display of the display unit 31L, and the power switch control device 28.
The power switch control device 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 supply.

In FIG. 59, 106A is a plug connected to a commercial (alternating current) power supply 99. Power with a voltage of 200 V, 50 Hz or 60 Hz is guided 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 and off the main power of the cooking cooker 1 and a sub-relay (not shown). FIG. 59 schematically shows only the main relay.

The main relay 107 receives a predetermined relay control signal from the integrated control device MC that controls the entire heating cooker 1 and executes an opening / closing operation. As will be described later, the sub-relay receives a relay control signal from the power switch control means 28 and executes an 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 determining ON / OFF of the power supply. The main power switch 97 is composed of the main relay 107 and the sub relay.

The integrated control device MC constantly acquires operation information from 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, and integrates and controls them. Further, it controls the display operation of the central control unit 30, 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 the central operation board 32 constituting the 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, an integrated control device MC, the right side input control device 23, and a power switch control device 28. Etc. are implemented. The central operation board 32 is made of a plastic material having excellent electrical insulation.

Reference numeral 55 denotes a power supply circuit board to which power of a commercial power source is supplied from the filter circuit 54, and as shown in FIG. 59, the power supply circuit A34 and the rectifying circuit 35 to which the power is applied via the rectifying circuit 33 It is provided with a power supply circuit B36, to which electric power is applied via the power supply circuit B36. The two power supply circuits A34 and the power supply circuit B36 convert the power of a voltage of 200V into a low voltage direct current such as 24V, 18V, 6V, 5V and the like.

The 5V electric power is supplied as a power source for 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 6V electric power is used as a power source (including a backlight power source) for the center 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 electric power generated by the power supply circuit A34 and the power supply circuit B36 is used as a power source for control and display in the upper unit 100. Has been done.

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

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

The control device 90 transmits 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 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) (IGBT79a, 79b) and switches the conduction time to lower the drive frequency of the inverter circuit 81R and reduce the thermal power. Or, conversely, control is performed to increase the driving frequency and increase the thermal power. These drive frequency commands are issued by the control device 90.

77a is an input current detection unit installed on the commercial power supply side of the inverter circuits 81L and 81R, and 77b is an output current detection unit that detects the power on the output side of the inverter circuits 81L and 81R.
The detection values of the input current detection unit 77a and the output current detector 77b are input to the control device 90.

In the initial stage during induction heating, the control device 90 determines the material of the object to be heated.
For example, when the drive frequency is changed from one drive frequency to another, the change in the input current value is observed to determine whether the material of the object to be heated such as a pot is magnetic metal, non-magnetic stainless steel, aluminum, or the like. Then, the drive frequencies of the switching elements (IGBTs) 79a and 79b are automatically adjusted to appropriate values. When the material of the object to be heated is determined to be non-magnetic stainless steel, it 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 gaps 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 form is not provided. Processing such as temperature detection, temperature comparison, and presence / absence of abnormality is executed by the software in the integrated control device MC.

131 is a door open / close detection mechanism. The door open / close detection mechanism 131 includes one switch that is opened / closed according to the opening / closing operation of the door 114, and a monitor switch that detects that the switch is correctly opened / closed. This point is the same as that described in the first and second embodiments.

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

The upper heater 163A and the lower heater 163B that heat the heating chamber 113 are controlled to be energized by opening and closing the relays 178A and 178B by the control device 105. The relays 178A and 178B may use a semiconductor switching element capable of finely controlling the energization rate, but in the sixth embodiment, since only ON-OFF control is performed, a relay is adopted. There is. The upper heater 163A and the lower heater 163B are operated by applying the same voltage of 200V as the commercial power supply.

The 132M is a door open detection switch that constitutes a part of the door open / close detection mechanism 131. The switch itself is installed inside the door open / close detection mechanism 131, but in FIG. 59, it is drawn at a different position to show that the open / close 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 type sensor for measuring the temperature of the magnetron 122 of the microwave heating device 120. All the temperature detection data of these sensors 160 and TS2 are input to the control device 105.

The 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 relay 182 is opened and closed by the control device 105.

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.

Although the temperature sensor for monitoring the temperature of the central display unit 30 and the input operation unit 40 is not shown in FIG. 59, in reality, such a temperature sensor is installed and always (every fixed time) during cooking. The temperature measurement data is acquired by the integrated control device MC and monitored so that the temperature does not become abnormal.

Reference numeral 38 is 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 center operation board 32 are installed adjacent to each other so as to be lined up on substantially the same plane.

Since the cooking device 1 of the sixth embodiment is configured as described above, when starting cooking, the operation key 98 of the input operation unit 40 is pressed in order to first turn on the main power switch 97. For example, if it is held down for a few seconds, the power switch control device 28 detects this operation and closes the main relay 107 in the filter circuit board 54.

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

When the integrated control device MC is started, it first performs an initial self-diagnosis before the start of the heating operation, and confirms that no abnormality has occurred. In addition, the central display unit 30 is activated to display 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 open / close detection mechanism 131 transmits 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 performs 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 into the heating chamber 113 and closes the door 114, the door open / close detection mechanism 131 again transmits a detection signal indicating that the door 114 is closed to the integrated control device MC via the control device 105. .. Therefore, when a command to start heating is issued from the input operation unit 40 in this state, the right input control device 23 detects the presence / absence of touch input of the input key for microwave heating. Therefore, a signal indicating a heating start command is transmitted from the right input control device 23 to the integrated control device MC. The right-hand input control device 23 also detects the input of the central operation unit 40M described in the first embodiment. Then, when the various touch-type 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 issued to the drive circuits 177A and 177B of the third cooling fan 128 and the fourth cooling fan 129, and the operation of the two cooling fans 128 and 129 is started. 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 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 period of microwave cooking. Therefore, the power consumption of the entire cooking device 1 can be suppressed to a low level.

The touch-type input key unit constituting the input operation unit 40 is provided with electrodes for detecting changes in capacitance corresponding to individual touch key areas. Therefore, such electrodes and each touch key portion. It requires a large number of parts such as an LED (light emitting diode) for illuminating the light. Therefore, although not shown in FIG. 59, the components constituting the touch-type input key unit are mounted on the central operation board 32 and the left operation board 38. The components of the input key 98 of the power switch 97 are also mounted on the central operation board 32.

(Summary of Embodiment 6)
The cooking device 1 of the sixth embodiment has the configuration of the seventh invention as in the first embodiment.
That is, the built-in type composite cooking cooker 1 in the sixth embodiment is
It is installed in the kitchen furniture 2 and
An upper unit 100 having an induction heating source 17 for heating the heated object via a top plate 15 on which the heated object is placed and supported by the kitchen furniture 2 and the upper unit 100.
A lower unit 200, which is installed below the upper unit 100 and has a heating chamber 113 whose front opening is openably closed by a door 114, is provided.
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, an oven heating device 140 that heats the heating chamber 113, and the micro. A cooling fan 128, 129, and a cooling fan 128, 129, are provided to cool 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 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. Installed sideways so that it protrudes into the
An antenna case 124 into which microwaves from the microwave generation source 122 are introduced is provided on the back side of the heating chamber 113.
In the antenna case 124, the microwave oscillated from the microwave generation source 122 is propagated to the space in the heating chamber 113 via the feeding port 180 provided on the back surface of the heating chamber 113. A rotating antenna 125 is placed and
The operation of the induction heating source 17, the microwave heating device 120, the oven heating device 140, and the cooling fan 128, 129 is 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 the space on the back side from one side wall surface (right side surface) of the heating chamber 113. These devices can be incorporated in the lower unit 200 in a narrow internal space.

Further, 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, and an upper unit 100.
A lower unit 200 attached to the upper unit 100 and having a built-in heating chamber 113 is provided.
In the lower unit 200, a microwave heating device 120 for supplying microwaves to the heating chamber 113 and an oven heating device 140 for heating the heating chamber are arranged.
The upper unit includes 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 microcomputers) 90. , 105 is equipped with a control device MC (master microcomputer) MC for integrated control.
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 ( The configuration is such that the electric power (200V power supply) distributed from between 34 and 36) is applied.

With this configuration, the overall power supply configuration of the cooking cooker 1 is simplified, and reliable operation can be expected by suppressing the propagation of unnecessary noise.

Other embodiments.
In the case of a user (user) who does not need both the upper unit 100 and the lower unit 200 at the same time as shown 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 packing form for selling the upper unit 100 and the lower unit 200 as a set and the packing form for selling only the upper unit 100 are set separately, the convenience at the time of sale is impaired. Never.

The cooking plate 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 from such a ceramic coating, it is possible to heat deep inside the food and make delicious food.

As the induction heating circuit, various drive methods such as a half-bridge circuit and a full-bridge circuit may be adopted depending on the form and number of the IH coils 17L and 17R. For example, the full bridge circuit is proposed in Japanese Patent No. 6130411 and Japanese Patent No. 6173623.
Further, the IH coil is arranged not only in a donut-shaped form but also in an annular main heating coil and close to both sides of the main heating coil, as shown in, for example, Japanese Patent No. 55338546. An induction heating unit including a flat first sub-heating coil and a second sub-heating coil having a width dimension smaller than the radius of the main heating coil may be used.

In the above description, the present invention has been described in the case of a cooking device provided with two induction heating units as a typical example of the heating cooker 1. For example, one of the two induction heating units may be used as an infrared heater or a radiant. It may be changed to various radiant electric heaters such as heaters.

Of each of the processes described in the embodiments, all or part of the processes described as being automatically performed can also be performed manually. It is also possible to automatically perform all or part of the processing described as being performed manually by a known method.

Further, each component of each circuit, component, and device shown in the figure is a functional concept and does not necessarily have to be physically configured as shown in the figure. Further, in particular, 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 each of these devices / circuits, and are concrete. The form is not limited to the one shown in the figure, and all or a part thereof can be functionally or physically distributed / integrated in any unit according to the function, the operating condition, and the like.

For example, a part of the data or the program 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) without being held by the cooking cooker 1. In this case, the cooking cooker 1 acquires necessary data and program information by accessing an external recording medium (storage server).

Further, in particular, 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 with an improved one as appropriate. In this case, for example, the patch may be obtained through the wireless communication unit 49.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. Substantial scope of the present invention is shown by the scope of claims, not the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

The cooking cooker and kitchen furniture according to the present invention can be widely used not only in the kitchen of a general house but also in a kitchen such as a public facility or a store.

1 Inductive heating cooker 2 Kitchen furniture 2A Installation port 2B Front opening 2P Top surface of mouth edge 3 Surface material 4 Surface material 5 Surface material 6 Surface material 7 Frame line 8 Wall 10 Main body 11 Inclined part 13 Heating chamber 13A Opening 14 Door 15 Top Plate 16 Upper case (upper housing)
16A Flange 16B Rear vertical wall 16F Front vertical wall 16L Side vertical wall 16R Side vertical wall 16S Bottom wall (bottom surface)
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 Board 33 Rectifier circuit 34 Power supply circuit A
35 Rectifier circuit 36 Power supply circuit B
37L Drive circuit 37R Drive circuit 40 Input operation unit 40L Left operation unit 40M Central operation unit 40R Right operation unit 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 supply circuit board 56 Choke coil 57 Transformer 58 Condenser 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 unit drive circuit 64 vent hole 65 bottom plate
66 Magnetic shield ring 70 Cover 71 Support plate 72 Power control unit (demand control unit)
73 Signal transmission unit 74 Drive circuit 75 DC power supply circuit 76 Resonant capacitor 77a Input current detector 77b Output current detector 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 heat dissipation fin 83 power control switching element 84 vibration sensing device 85 electric parts 90 control device 90R storage device 91 power supply circuit 92 DC power supply conversion unit 93 Temperature detection circuit 94L Inductive heating circuit 94R Inductive 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 housing)
101B Back plate 101C Inclined part 101F Front plate 101H Body part 101M Notch (inspection port)
101U Bottom plate 101L Side vertical wall 101P Convex part 101T Front horizontal wall 101R Side vertical wall 101N Through hole (engagement hole)
102 Exhaust duct 102A Internal passage 102B Internal passage 102E Termination part 103 Step part 104 Cavity 105 Control device 106 Power cord 106A Plug 110 Main body 111 Inclined part 112 Front cover 113 Heating chamber 113A Opening 113B Back wall (rear wall surface)
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 Concave 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 part 121 Inverter circuit board 121A Inverter circuit (drive circuit)
122 Magnetron (microwave source)
122A Oscillator 122H Heat dissipation 123 Waveguide 124 Antenna case 125 Antenna 126 Antenna drive motor 126A Rotating shaft 127 Power supply circuit board 128 3rd cooling fan (front cooling fan)
129 4th cooling fan (rear 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 Closing detection unit 140 Oven heating device 141 Ceiling space)
142 space (side space)
143 Heat sink heat dissipation fins 144 Space 145 Recipient 146 Screws 147 Tableware 148 Screws (fixture)
149 Tension spring 150 Case A
151 Case B
152B Intake port 152F Intake port 153 Duct 154 Case C
154A Closure 154B Main body 155 Exhaust fan 156 Intake hole 157 Sealing material 158 Non-contact temperature measurement unit (infrared temperature measurement unit)
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 support 178B Relay 179 181 Cover 182 Relay 183 Screw 184 Sealing Material 185 Radio Sealing Room 186 Screw 187 Screw 190 Frame 191 Cover 192 Inner Frame 192W Peeping Window (Opening)
193 Inner seal frame 194 Choke chamber 195 Seal plate 196 Seal plate 197 Upper shield plate 198 Support bracket 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 Power supply (built-in battery)
CK IH coil installation space D6 Maximum width in the front-back direction DP1 Depth (dimension)
DP2 dimensions F1 1st air passage F2 2nd air passage FI entrance FO exit GP1 gap GP2 gap GP3 gap GP4 gap GP5L gap GP5R gap GP6 gap GP7 gap GP8 gap GP1 gap H1 maximum height dimension HP1 first horizontal plane HP2 second horizontal plane HV effective height dimension HX maximum height dimension LA protrusion dimension LB protrusion dimension LD distance LF exhaust port dimension LW exhaust range MC integrated control device MM storage device N heated Object 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 width dimension W5 Notch opening width WH Inside width dimension (frontage dimension).

Claims (9)

It has a flat body with a top plate on top on which the object to be heated is placed, and has a flat body.
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 IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. It is provided with 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 an operation input of a user.
The first cooling fan has a rotary blade that rotates about a vertical axis.
The first cooling fan faces the inlet of the first air passage formed between the inverter circuit board and the cover, and the first cooling fan is located at one end of the first air passage. The configuration is such that the first cooling air is supplied from one inlet to the outlet at the other end.
The second cooling fan is located closer to the input operation unit than the first cooling fan, and supplies the second cooling air to 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 first cooling fan and the second cooling fan are installed side by side in the front-rear direction so that the second cooling fan is located on the front side.
A cooking device characterized in that the outlet of the first cooling fan and the outlet of the second cooling fan are open in the same direction with each other . It has a flat body with a top plate on top on which the object to be heated is placed, and has a flat body.
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 IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. It is provided with 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 an operation input of a user.
The first cooling fan has a rotary blade that rotates about a vertical axis.
The first cooling fan faces the inlet of the first air passage formed between the inverter circuit board and the cover, and the first cooling fan is located at one end of the first air passage. The configuration is such that the first cooling air is supplied from one inlet to the outlet at the other end.
The second cooling fan is located closer to the input operation unit than the first cooling fan, and supplies the second cooling air to 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 first cooling fan and the second cooling fan are installed side by side in the front-rear direction so that the second cooling fan is located on the front side.
A cooking device characterized in that the first cooling fan and the second cooling fan have the same shape as each other. It has a flat body with a top plate on top on which the object to be heated is placed, and has a flat body.
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 IH coil, and an IH coil and the inverter circuit board are installed between the IH coil and the inverter circuit board. A cover, a first cooling fan that introduces cooling air from the outside of the main body, and
In order to determine the energization condition for the IH coil, an input operation unit that accepts the operation input of the user and an input operation unit.
A second cooling fan that supplies the second cooling air to the second air passage below the input operation unit is provided.
The first cooling fan has a rotary blade that rotates about a vertical axis.
The first cooling fan has an intake port on the lower surface of the fan case, and has an air outlet on the side surface for blowing cooling air.
A first air passage formed below the cover, a heat sink arranged on the upper surface of the inverter circuit board, and electric power attached to the heat sink on a first horizontal plane crossing the upper and lower center portions of the outlet. A control switching element and each are arranged,
An exhaust window for exhausting air after passing through the IH coil is arranged on the second horizontal plane above the first horizontal plane.
The input operation unit is installed long in the left-right direction on the front side of the main body.
The second cooling fan is provided with an outlet.
The first cooling fan and the second cooling fan are installed side by side in the front-rear direction so that the second cooling fan is located on 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 heating characterized by that the first cooling air blown from the outlet of the first cooling fan and the second cooling air blown from the outlet of the second cooling fan are discharged from the exhaust window . Cooking device. The first or second aspect of the present invention, wherein the inverter circuit board includes, 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. Heat sink. The inverter circuit board includes, 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 heat sinks are 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 that approach each other toward the upper side. can be,
The cooking device according to claim 1 or 2 , wherein the switching element is attached to the inclined surface of the heat sink. The cooking device according to any one of claims 1 to 3 , wherein the first cooling fan is a centrifugal fan. The first cooling fan further has a fan case.
The rotor blade is surrounded by the fan case, and is surrounded by the fan case.
The cooker according to any one of claims 1 to 3 , wherein a suction port for introducing cooling air is formed on the bottom surface of the fan case. The first cooling fan further has a fan case.
The rotor blade is surrounded by the fan case, and is surrounded by the fan case.
A suction port for introducing cooling air is formed on the bottom surface of the fan case.
The cooker according to any one of claims 1 to 3 , wherein a ventilation hole is formed on the bottom surface of the main body at a position directly below the suction port. Kitchen furniture characterized by having an installation port on the upper surface and installing the heating cooker according to any one of claims 1 to 8 in the installation port.

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