JP5500944B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device that performs cooking using an electromagnetic induction heating source or the like. The induction heating type cooking device targeted by the present invention was formed as a stationary type installed on kitchen furniture (not shown) such as a kitchen sink, and kitchen furniture. The present invention relates to both a built-in type and a built-in type used by being installed in an installation space, and particularly relates to a type having a grill heating chamber.

  As a conventional heating cooker, there is an electromagnetic induction heating cooker that heats an upper surface portion of one main body (housing) by one or a plurality of electromagnetic induction heating (IH heating). And there exists what equipped the heating chamber of the electric radiation type called a grill warehouse or a roaster (for example, refer patent document 1).

JP 2006-346271 A (3rd page, 4th page, FIG. 1)

In a conventional cooking device, cooking can be performed using IH heating and electric radiation heating in a grill heating chamber, respectively.
Here, there is a case where “composite heating cooking” is performed in which IH heating and electric radiation heating are continuously performed in one cooking. However, in the conventional cooking device, in the heating control by IH heating and the heating control by electric radiation heating, the cooperative operation and the interlocking operation are not performed. For this reason, for example, when the IH heated cooking object is continuously heated by electric radiation in the grill heating chamber, there is a problem in the finish of cooking, the cooking time becomes long, or the operation becomes complicated was there.

  This invention is made | formed in order to solve the above subjects, and provides the heating cooker which can perform composite heating cooking efficiently.

The heating cooker according to the present invention includes a first heating source and a second heating source that can independently set energization conditions, an input unit that sets energization conditions for the first heating source and the second heating source, and an input unit. energizing control means for controlling the energization of the first heating source and second heating source in accordance with an input from, and display means for displaying the operation status of the first heating source and second heating source includes a first heat source , An electromagnetic induction heating source, which is installed below the top plate constituting the upper surface of the main body of the heating cooker, and heats the container for storing the food to be placed on the upper surface of the top plate, The second heating source is a radiant electric heating source that heats a container accommodated in a heating chamber defined in the interior of the main body, and cooking by the first heating source is performed by an input unit. If combined heat cooking is set to perform cooking using the second heat source following The energization control means, after starting the cooking by the first heating source, as cooked preparatory operation of the second heat source is completed by the time of completion of the heating by the first heating source, start cooking by the first heating source After that, the cooking preparation operation of the second heating source is started.

  In the cooking device according to the present invention, when performing the combined cooking, the cooking preparation operation is started by the second heating source used in the subsequent stage during the heating in the first heating source used in the preceding stage. For this reason, complex cooking can be performed efficiently.

It is a perspective view of the state where the cooking-by-heating machine concerning Embodiment 1 of the present invention partially disassembled. It is a perspective view of the state which removed the top plate part of the heating cooker which concerns on Embodiment 1. FIG. It is a top view of the heating cooker which concerns on Embodiment 1. FIG. It is a perspective view of the state which removed the main component inside the main body of the heating cooker which concerns on Embodiment 1. FIG. It is the VV line longitudinal cross-sectional view of FIG. It is the VI-VI line longitudinal cross-sectional view of FIG. It is a functional block diagram which shows the main structures of the heating cooker which concerns on Embodiment 1. FIG. It is a perspective view which fractures | ruptures and shows a part of cooling duct and component case which concern on Embodiment 1. FIG. 6 is a diagram for explaining an integrated display unit and an operation unit according to Embodiment 1. FIG. 3 is a longitudinal sectional view of a central portion of the cooking container according to Embodiment 1. FIG. It is a center part longitudinal cross-sectional view which shows the state which mounted the cooking container which concerns on Embodiment 1 above the IH heating source. FIG. 5 is an operation explanatory diagram illustrating a baking process by the heating cooker according to the first embodiment. It is operation | movement explanatory drawing which shows the bread fermentation process by the heating cooker which concerns on Embodiment 1. FIG. It is operation | movement explanatory drawing which shows the compound heating cooking process by the heating cooker which concerns on Embodiment 1. FIG. It is a figure explaining the display state in the compound heating cooking of the integrated display means which concerns on Embodiment 1. FIG. It is another figure explaining the display state in the compound heating cooking of the integrated display means which concerns on Embodiment 1. FIG. It is another figure explaining the display state in the compound heating cooking of the integrated display means which concerns on Embodiment 1. FIG. It is another figure explaining the display state in the compound heating cooking of the integrated display means which concerns on Embodiment 1. FIG.

Embodiment 1 FIG.
FIGS. 1-18 shows the heating cooker which concerns on Embodiment 1 of this invention, Comprising: The example of the heating cooker called a built-in type or a built-in type is shown.
FIG. 1 is a perspective view of a part of the cooking apparatus which is partially disassembled.
FIG. 2 is a perspective view showing the entire main body with the top plate removed.
FIG. 3 is a plan view of the entire main body.
FIG. 4 is a perspective view of a state where main components such as the upper and lower partition plates are removed.
FIG. 5 is a vertical cross-sectional view taken along line VV in FIG.
6 is a longitudinal sectional view taken along line VI-VI in FIG.
FIG. 7 is a block diagram of the main part of the control circuit.
FIG. 8 is a perspective view of the main part of the part case and a part of the cooling duct broken away.
FIG. 9 is a diagram illustrating the integrated display unit and the operation unit.
FIG. 10 is a longitudinal sectional view of the central portion of the cooking container.
FIG. 11 is a longitudinal sectional view of the central portion showing a state where the cooking container is placed above the right IH heating source.
FIG. 12 is an operation explanatory view showing a baking process performed using a cooking container.
FIG. 13 is an operation explanatory view showing a bread fermentation process performed using a cooking container.
FIG. 14 is an operation explanatory view showing a combined cooking process using a cooking container.
15 to 18 show the transition of the display of the liquid crystal screen of the integrated display means in the first embodiment.
FIG. 15 shows a display state of the liquid crystal screen when the combined cooking is started.
FIG. 16 shows another display state of the liquid crystal screen during combined cooking.
FIG. 17 shows another display state of the liquid crystal screen during combined cooking.
FIG. 18 shows another display state of the liquid crystal screen during combined cooking.
In each figure, the same reference numerals are given to the same or corresponding parts.

[Configuration of cooking device]
(overall structure)
The cooking device according to the first embodiment includes a rectangular main body A. The main body part A heats the top plate part B constituting the upper surface of the main body part A, the casing part C constituting the periphery (outer shell) other than the upper surface of the main body part A, pots, foods, and the like with electrical energy or the like. A heating means D, an operating means E operated by a user, a control means F for controlling the heating means in response to a signal from the operating means, and a display means G for displaying operating conditions and operating states of the heating means are provided. . The heating cooker according to the first embodiment includes a heating unit that performs electric radiation heating in a grill heating chamber, which will be described later, as a part of the heating unit D.

Next, terms used in the embodiments of the present invention are defined respectively.
The operating condition of the heating means D refers to the electrical and physical conditions for heating, and is a generic term for energization time, energization amount (thermal power), heating temperature, energization pattern (continuous energization, intermittent energization, etc.) It is. That is, it refers to the energization condition of the heating means D.

  "IH" used when calling a right IH heating part etc. means the induction heating (Induction Heating).

  Display means that the user is informed of operating conditions and related information that is useful for cooking (changes in characters, symbols, illustrations, colors, presence / absence of light emission, light emission brightness, etc.) Including the target one, this is simply the operation of visually informing the user of “Cooking related information”.

  Unless otherwise specified, the display means is a liquid crystal (LCD), various light emitting elements (an example of a semiconductor light emitting element is LED (Light Emitting Diode), LD (Laser Diode)), organic An electroluminescence (EL) element etc. are included. For this reason, the display means G includes a display screen such as a liquid crystal screen or an EL screen.

  The notification is an operation for notifying the user of the operation conditions of the control means and cooking-related information by display or electrical sound (refers to electrically generated or synthesized sound).

  Unless otherwise specified, the notification means includes notification means using audible sounds such as a buzzer and a speaker, and notification means using characters, symbols, illustrations, or visible light.

  Coordination of heating operation means that one heating source can start some operation during the operation of the other heating source or the operation can be reserved between the operation of the electric radiation heating source and the operation of the IH heating source Does not mean that both actions affect each other's actions.

  Compound cooking means that in one cooking (cooking of one menu), two or more different ones of a plurality of heating sources provided in the heating cooker are used in succession for cooking.

(Main part A)
1 to 6, the main body A is entirely covered with a top plate B, and the main body A has an installation port K1 whose outer shape is formed in kitchen furniture KT such as a sink (see FIG. 6). It is formed in a substantially square or rectangular shape with a predetermined size matching the space and the space.

(Top plate B)
As will be described below, the top plate portion B is composed of two large parts, an upper frame (also referred to as a frame) 20 and a top plate (also referred to as an upper plate, top glass, or top plate) 21. The upper frame 20 is formed in a frame shape from a metal plate such as a nonmagnetic stainless steel plate or an aluminum plate, and has a size so as to close the upper surface opening of the main body case 2 (see FIGS. 3 and 6). ).

  The top plate 21 is placed over the main body case 2 so as to completely cover a large opening provided at the center of the frame-shaped upper frame 20 without a gap. The top plate 21 is entirely made of a translucent material that transmits infrared rays, such as heat-resistant tempered glass or crystallized glass, and is formed in a rectangle or a square according to the shape of the opening of the upper frame 20. Further, the front, rear, left, and right side edges of the top plate 21 are fixed in a watertight state with rubber packing or a sealing material (not shown) interposed between the top plate 21 and the opening of the upper frame 20. Therefore, water droplets or the like are prevented from entering the inside of the main body A from the upper surface of the top plate 21 through a gap formed at the facing portion between the upper frame 20 and the top plate 21.

  In FIG. 1, 20 </ b> B is a right vent hole that is simultaneously punched and formed by a press machine when the upper frame 20 is formed, and serves as an intake passage for the blower 30 described later. Similarly, 20C is a central vent hole that is punched when the upper frame 20 is formed, and 20D is a left vent hole that is also punched when the upper frame 20 is formed. Although only the rear portion of the upper frame 20 is shown in FIG. 1, when viewed from above as shown in FIG. 3, the entire upper surface of the main body case 2 is covered in a frame shape.

  In the actual cooking stage, the top plate 21 is induction-heated by the right IH heating source 6R and the left IH heating source 6L, which will be described in detail later, and receives heat from a heated object N such as a hot pot or the like, which is 300 degrees or higher. Can also be. Further, when a central heating source 7 which is a radiation type electric heater described later is provided below the top plate 21, the top plate 21 is directly heated to a high temperature by the heat from the central heating source 7. May reach 350 degrees or more.

(Housing C)
The housing | casing part C has the main body case 2 which forms the outer surface. The main body case 2 has a body 2A formed by bending and bending a single flat metal plate with a press molding machine, and the end of the body is joined by fixing means such as welding, rivets or screws. The front flange plate 2B is made of a combined metal plate. In a state where the front flange plate 2B and the body portion 2A are coupled by the fixing means, a box shape with an open upper surface is formed. The lower part of the back surface of the box-shaped body part 2A is an inclined part 2S, and the upper part above the inclined part 2S is a vertical body part rear wall 2U (see FIG. 2).

  At the three positions of the rear end, the right end and the left end of the upper surface opening of the main body case 2, flanges formed by integrally bending outward in an L shape are formed. 3B is a rear flange, and 3L is a left side. The flange 3R is a right flange. These three flanges 3B, 3L, 3R and the front flange plate 2B are placed on the upper surface of the installation part (see FIG. 6) of the kitchen furniture KT to support the load of the cooking apparatus.

  When the cooking device is completely accommodated in the installation opening K1 of the kitchen furniture KT, the front portion of the cooking device is exposed from the opening KTK formed in front of the kitchen furniture KT. The front operation unit 60 of the cooking device can be operated from the front side.

  The inclined portion 2S forms an inclined surface connecting the back surface and the bottom surface of the body portion 2A (see FIG. 4), and when the cooking device is installed in the kitchen furniture KT, the installation opening K1 of the kitchen furniture KT is provided. Cut so as not to collide with or interfere with the trailing edge. That is, when this type of cooking apparatus is installed in the kitchen furniture KT, the cooking apparatus is tilted so that the front side of the main body A of the cooking apparatus is downward, and in this state, the installation opening K1 of the kitchen furniture KT from the front side to the front side. Drop into. After that, it is dropped into the installation port K1 with the rear side drawing an arc later (such an installation method is described in detail, for example, in JP-A-11-121155). Due to such an installation method, the front flange plate 2B is located between the front edge of the installation opening K1 of the kitchen furniture KT (see FIG. 6) when the cooking device is installed in the kitchen furniture KT. The size is such that a sufficient space SP is secured.

  Inside the main body case 2, IH heating sources 6L and 6R for inductively heating an object to be heated N such as a metal pan placed on a top plate 21 to be described later, and, for example, a radiant heater called radiant heat A radiant central electric heating source 7 is provided as a heating source for heating. Further, the control means F for controlling the heating operation of the heating means D provided with these heating sources, the operating means E for inputting the heating conditions to the control means F, and the operating conditions of the heating means D inputted by the operating means E Display means G for displaying. Each of these configurations will be described later.

  The interior of the casing C is roughly divided into a right cooling chamber 8R that extends long in the front-rear direction, a left cooling chamber 8L that also extends long in the front-rear direction, a box-shaped grill (or roaster) heating chamber 9, and an upper component chamber 10. The rear exhaust chamber 12 is partitioned (see FIG. 2). These compartmented rooms are not completely isolated from each other. For example, the right cooling chamber 8R and the left cooling chamber 8L communicate with the rear exhaust chamber 12 via the upper component chamber 10, respectively.

  The upper and lower partition plates 24R are right upper and lower partition plates installed vertically (see FIGS. 2 and 4), and isolate the right cooling chamber 8R and the grill heating chamber 9 from each other inside the casing C. It serves as a partition wall. Reference numeral 24L denotes a left-side upper and lower partition plate, which serves as a partition wall that separates the left cooling chamber 8L and the grill heating chamber 9 from each other inside the casing C (see FIGS. 2 and 4). . Note that the upper and lower partition plates 24R and 24L are installed at an interval of about several millimeters from the outer wall surface of the grill heating chamber 9.

The horizontal partition plate 25 (see FIGS. 2 and 5) has a size that divides the entire space between the left and right upper and lower partition plates 24L and 24R into two upper and lower spaces, and above this partition plate is the upper part. Chamber 10. The horizontal partition plate is installed with a predetermined gap 116 (see FIG. 6) of about several millimeters to 1 cm from the ceiling surface of the grill heating chamber 9.
24A is a notch formed in each of the left and right upper and lower partition plates 24L and 24R, and is provided so as not to collide with a cooling duct 42 to be described later when it is installed horizontally.

  The grill heating chamber 9 is a substantially independent sealed space with the front opening 9 </ b> A portion closed in a state where a door 13, which will be described later, is closed, but the external space of the housing portion C via the exhaust duct 14, that is, the kitchen. (See FIG. 6).

  The gap 26 is a gap formed between the horizontal partition plate 25 and the grill heating chamber 9 (the same as the gap 116 described above), and finally communicates with the rear exhaust chamber 12. The air in 26 is attracted to the outside of the main body A through the rear exhaust chamber 12 and discharged (see FIG. 6).

  In FIG. 2, reference numeral 28 denotes a rear partition plate that partitions the upper component chamber 10 and the rear exhaust chamber 12. The lower end portion has a height that reaches the horizontal partition plate 25, and the upper end portion has a height dimension that reaches the upper frame 20. Yes. 28A is an exhaust hole formed in two places on the rear partition plate 28 for exhausting the cooling air that has entered the upper part chamber 10 (see FIG. 2).

(Cooling fan)

  As shown in FIGS. 4 and 5, the cooling unit CU is a cooling unit that is inserted and fixed into the cooling chambers 8R and 8L from above, and includes a component case 34 that houses a circuit board 41 that constitutes an inverter circuit, A fan case 37 that is coupled to the component case and forms a blower chamber 39 of the blower 30 therein is provided. The blower 30 is a so-called horizontal shaft type in which the rotation shaft 32 of the driving motor 300 is horizontal, and is accommodated in a fan case 37 installed in the right cooling chamber 8R. A circular air blowing space is formed inside the fan case 37 so as to surround a large number of blade portions 30F of the air blower 30, and an air blowing chamber 39 is formed. 37A is a suction cylinder of the fan case 37, and a suction port 37B is formed at the uppermost position. Reference numeral 37 </ b> C denotes an exhaust port (outlet) formed at one end of the fan case 37.

  The blower 30 in this embodiment uses a centrifugal multi-blade blower (typically, there is a sirocco fan) (see FIGS. 4 and 5), and the rotating shaft 32 of the driving motor 300. What fixed the wing | blade part 30F to the front-end | tip of is used. The blower 30 is installed in each of the right cooling chamber 8R and the left cooling chamber 8L, and cools the circuit boards for the left and right IH heating coils 6LC and 6RC and the coils themselves. explain.

  The fan case 37 is formed as an integral structure by combining two plastic cases 37D and 37E and connecting them with a fixing tool such as a screw. In this coupled state, it is inserted into the cooling chambers 8R and 8L from above and fixed so as not to move by an appropriate fixing means.

  The component case 34 is connected in close contact with the fan case 37 so that cooling air discharged from an air outlet 37C for discharging air from the fan case 37 is introduced, and has a horizontally long rectangular shape as a whole. The other parts except for the introduction port (not shown) communicating with the exhaust port 37C and the first exhaust port 34A and the second exhaust port 34B described later are hermetically sealed. Has been.

  On the upper surface portion of the component case 34, two first exhaust ports 34 </ b> A and two second exhaust ports 34 </ b> B are formed apart along the direction in which the cooling air from the blower 30 flows. The second exhaust port 34B is located at the most downstream side of the flow of the cooling air in the component case 34, and has an opening area several times larger than that of the first exhaust port 34A. 5, Y1 to Y5 indicate the flow of the air sucked and discharged by the blower 30, and the cooling air flows in sequence Y1, Y2,... Y5.

  The cooling duct 42 is entirely molded of plastic, and an upper case 42A that is an integrally molded product of plastic and a flat lid (hereinafter referred to as “lower case”) 42B that is also an integrally molded product of plastic are stacked. By fixing with screws, three ventilation spaces 42F, 42G, and 42H, which will be described later, are formed between the two (see FIG. 8).

The ejection holes 42C are ejection holes formed so as to penetrate the wall surface over the entire upper surface of the upper case 42A. The ejection holes 42C are formed to eject cooling air from the blower 30, and the diameters of the ejection holes 42C are the same. It is.
The partition wall 42D is a rib (projection) -shaped partition wall integrally formed in the upper case 42A and formed into a straight line or a curved line. As a result, a ventilation space 42F having one end communicating with the exhaust port 34A of the component case 34 is formed. A compartment is formed.

  Similarly, the partition wall 42E is a partition wall having a U-shaped planar shape integrally formed in the upper case 42A, and thereby defines a ventilation space 42H having one end communicating with the exhaust port 34A of the component case 34. It is formed. This ventilation space 42H communicates with the widest ventilation space 42G via a communication port (hole) 42J (see FIG. 5) formed in one side of the partition wall 42E (the side close to the component case 34 in FIG. 4). .

  Further, the cooling duct 42 is installed so that one side of the ventilation space 42H (the side close to the component case 34 in FIG. 4) is directly above the second exhaust port 34B of the component case 34. Thereby, the cooling air discharged from the component case 34 enters the ventilation space 42H of the cooling duct 42, expands from here to the ventilation space 42G, and is ejected from each ejection hole 42C. Reference numeral 42K denotes a rectangular ventilation opening formed corresponding to the ventilation space 42H of the upper case 42A, which emits air for cooling liquid crystal display screens 45R and 45L described later.

  The radiating fins 43A and 43B are power control semiconductors such as an IGBT 225 in the circuit board 41 on which the inverter circuits (described in detail in FIG. 7) 210R and 210L for the right IH heating source 6R and the left IH heating source 6L are mounted. It is an aluminum radiating fin with a switching element and other heat generating parts attached, and a large number of thin fins are regularly arranged throughout. As shown in FIG. 5, the heat dissipating fins are installed on the side close to the ceiling in the component case 34, and a sufficient space is secured in the lower part so that the cooling air Y4 flows in the space. In other words, due to the characteristics of the blower 30, the discharge capacity (discharge capacity) is not uniform over the entire area of the discharge port (exhaust port 37C), and the highest part of the discharge capacity is below the vertical center point of the exhaust port 37C. The positions of the radiation fins 43A and 43B are set upward so as not to be positioned on the extended line of the position. Further, the cooling air is not blown toward various small electronic components and printed wiring pattern portions mounted on the surface of the circuit board 41.

  The grill heating chamber 9 is built below the IH heating sources 6L and 6R of the main body A, and a predetermined space SX (see FIG. 6) is formed between the inner rear wall surface of the main body A. In other words, the grill heating chamber 9 is provided with a space SX of 10 cm or more between the body case 2 and the body rear wall 2U in order to install an exhaust duct 14 to be described later and to form the rear exhaust chamber 12.

  When the two independent cooling units CU are inserted and fixed in the cooling chambers 8R and 8L from above, a part of the fan case 37 having a large lateral width partially protrudes into the space SX, and the circuit board 41 is The accommodated component case 34 is formed with a predetermined gap from the left and right side wall surfaces of the grill heating chamber 9. In addition, the space | gap here means the space | gap between the left and right outer wall surfaces of the grill heating chamber 9, and the right-and-left partition plates 24R and 24L and the outer surface of the component case 34 referred to in this embodiment. It does not mean the facing gap between them.

  Thus, the fan case 37 portion of the cooling unit CU is disposed in the space SX even when the grill heating chamber 9 is present, and when viewed from the front, the portion of the fan case 37 of the cooling unit CU is the grill. By partially overlapping the heating chamber 9, it is possible to prevent an increase in the width dimension of the main body A.

(Grill heating chamber 9)
As shown in FIGS. 1 and 6, the front opening 9 </ b> A of the grill heating chamber 9 is covered by a door 13 so as to be opened and closed, and the door 13 can be moved in the front-rear direction by a user operation. Are supported by a support mechanism (not shown) such as a rail or a roller. Further, a window plate made of heat-resistant glass is installed in the central opening 13A of the door 13 so that the inside of the grill heating chamber 9 can be visually recognized from the outside. A handle 13 </ b> B protrudes forward to open and close the door 13. The grill heating chamber 9 is formed with a predetermined space SX (see FIG. 6) between the inner rear wall surface of the main body, an exhaust duct 14 to be described later is installed using this space, and the rear exhaust chamber 12 Is formed.

  The front end of a metal tray 108 (see FIG. 6) is connected to the door 13, and when cooking with a lot of oil, a metal grill 109 is usually placed on the tray 108 for use. Is done. As a result, when the door is pulled out to the front in the horizontal direction, the tray 108 (the grill net when the grill 109 is placed) is also pulled out to the front of the grill heating chamber 9 together with the drawer operation. Note that the tray 108 is detachably supported on the left and right ends on a pair of left and right metal rails (not shown) normally connected to the door 13, so that the tray 108 is detached from the rail alone. Be able to.

The grill heating chamber 9 is provided with a pair of upper and lower radiant electric heating sources 22 and 23 (details will be described later) such as a sheathed heater.
The shape of the grill 109 and the position, shape, and the like of the tray 108 are devised so that they do not interfere with the extraction when the tray 108 is pulled forward by hitting the lower radiant electric heating source 23. In this manner, in the grill heating chamber 9, if meat, fish, or other food is placed on the grill 109 and the heaters 22 and 23 are energized (simultaneously or in time division or the like), the food is heated from both the upper and lower surfaces. It has a “double-sided baking function”. In addition, the grill heating chamber 9 is provided with a temperature sensor 242 (see FIG. 7) for detecting the indoor temperature, and cooking can be performed while maintaining the internal temperature at a desired temperature. .

  As shown in FIG. 6, the grill heating chamber 9 has a cylindrical metal inner frame 9 </ b> C having an opening 9 </ b> B on the entire rear (back) side and a front opening 9 </ b> A on the front side, An outer frame 9D covers the entire outside with a predetermined (lower) gap 113, an (upper) gap 114, and left and right side gaps (115, not shown). A gap 307 is formed between the outer frame 9D of the grill heating chamber 9 and the bottom wall surface of the main body case 2.

  The outer frame 9D has five surfaces, that is, left and right side wall surfaces, an upper surface, a bottom surface, and a rear surface, and is entirely formed of a steel plate or the like. The inner surfaces of the inner frame 9C and the outer frame 9D form a coating with good cleanability such as enamel, a heat-resistant coating film, or an infrared radiation film. When an infrared radiation film is formed, the amount of infrared radiation with respect to an object to be heated such as food is increased, heating efficiency is improved, and uneven burning is also improved. 9E is an exhaust port formed in the upper part of the back wall surface of the outer frame 9D.

  The exhaust duct 14 is a metal exhaust duct installed so as to continue to the outside of the exhaust port 9E. As shown in FIG. 6, the exhaust duct 14 has a square or rectangular cross section, and is inclined obliquely upward as it goes from the middle to the downstream side, then bends in the vertical direction, and finally the upper end opening 14A is upward. It communicates to the vicinity of the central vent 20C formed in the frame 20.

  The deodorizing catalyst 121 is a deodorizing catalyst installed in the exhaust duct 14 at a position downstream of the exhaust port 9E. The deodorizing catalyst 121 is activated by being heated by a catalyst heater (not shown) and passes through the exhaust duct 14. It functions to remove odorous components from the hot exhaust gas in the grill heating chamber 9.

(Exhaust structure / intake structure)
As described above, the rear portion of the upper frame 20 is formed with a right ventilation port (becomes an intake port) 20B, a central ventilation port (becomes an exhaust port) 20C, and a left ventilation port 20D that are long and wide. On these three rear vents, a metal plate-like cover 130 (see FIG. 1) in which countless small communication holes are formed so as to cover the entire upper part is detachably mounted. The cover may be a metal mesh or a fine lattice shape in addition to a metal plate formed with small holes for communication holes by press working (also called punching metal). In any case, it is only necessary that the user's finger or a foreign object does not enter the ventilation openings 20B, 20C, 20D from above.

  The suction port 37B at the top of the suction cylinder 37A of the fan case 37 faces directly below the right end of the cover 130, and external indoor air such as a kitchen is passed through the cover communication hole in the left and right sides of the main body A. The cooling chambers 8R and 8L can be introduced.

  In the rear exhaust chamber 12, as shown in FIG. 2, the upper end of the exhaust duct 14 is located. In other words, rear exhaust chambers 12 communicating with the gaps 116 formed around the grill heating chamber 9 are secured on the left and right sides of the exhaust duct 14. The grill heating chamber 9 is installed with a predetermined gap 116 between the grill heating chamber 9 and the horizontal partition plate 25, and this gap finally communicates with the rear exhaust chamber 12. As described above, the interior of the upper component chamber 10 communicates with the rear exhaust chamber 12 through the pair of exhaust ports 28A formed in the rear partition plate 28, so that the cooling air flowing in the upper component chamber 10 (the arrow in FIG. 5). Y5) is discharged to the outside of the main body 1 as indicated by an arrow Y9 in FIG. 2. At this time, the air inside the gap 116 is also discharged together with the attraction.

  The circuit board (circuit board on which an inverter circuit or the like is formed) 41 (see FIGS. 4 and 8) includes a rectifier bridge circuit 221 connected to a commercial power supply of 100V or 200V, and a DC side output of the rectifier bridge circuit 221. A coil 222 connected to the terminal, a smoothing capacitor 223, a resonance capacitor 224 connected to the coil 222 and the smoothing capacitor 223, an IGBT 225 serving as a semiconductor switching means connected to these components, and other necessary induction heating drives Main electrical / electronic circuit components are installed. The IGBT 225 generates heat because a large amount of electric power flows in accordance with the induction heating driving operation. Therefore, the IGBT 225 is attached by heat transfer to the heat radiation fins 43A and 43B (see FIG. 5) to cool the air from the blower 30. Cool with wind.

(Auxiliary cooling structure)
4 and 5, various electric / electronic components 56 of the upper surface operation unit 61, light emitting elements (LEDs) for displaying the heating power during induction heating cooking, etc. are fixed on the mounting substrate 58. The housed front part case is composed of a transparent plastic lower duct 46A whose upper surface is open and a transparent plastic upper duct 46B which serves as a lid for sealing the upper surface opening of the lower duct. . Ventilation holes 46R and 46L are opened at the right end and the left end of the lower duct 46A, respectively, and a notch 46C that allows ventilation is formed at the center rear.

  On the ceiling surface of the upper duct 46B, the integrated display means 100 is installed in the center, and the liquid crystal display screens 45R and 45L are installed on the left and right, respectively. The cooling air of the blower 30 enters the ventilation space 42H of the cooling duct 42 from the second exhaust port 34B of the component case 34, and from there through the ventilation port 42K formed corresponding to the ventilation space 42H, a liquid crystal display screen (liquid crystal The display part) enters the front part case 46 from below the 45R and 45L, and is discharged to the upper part chamber 10 from the notch 46C. Thereby, both the liquid crystal display unit and the integrated display unit 100 are always cooled by the cooling air from the blower 30. In particular, since the cooling air from the second exhaust port 34B of the component case 34 is not the air that has cooled the left and right IH heating coils 6LC and 6RC that become high during induction heating operation, the temperature is low, and the liquid crystal display screens 45R and 45L In addition, both the integrated display unit 100 can effectively suppress the temperature rise while the amount of cooling air is small. In particular, since the rear positions of the left and right IH heating coils 6LC and 6RC that are located downstream in the flow of cooling air (arrow Y5 in FIG. 5) are difficult to cool, in this embodiment, the first exhaust port 34A is connected to the ventilation space 42F. The low temperature wind is directly supplied to cool the part.

(Auxiliary exhaust structure)
As shown in FIG. 6, a cylindrical bottom portion 14 </ b> B having a shape recessed downward by one step is formed downstream of the deodorizing catalyst 120 in the exhaust duct 14. 14C is a vent hole formed in the bottom portion 14B. The blower 106 is an axial-flow blower for auxiliary exhaust facing the vent hole, 106A is a rotor blade, 106B is a driving motor for rotating the rotor blade 106A, and is supported by the exhaust duct 14. Yes. While cooking in the grill heating chamber 9, the grill heating chamber 9 becomes hot, so the internal atmospheric pressure naturally rises, and accordingly, the high temperature atmosphere is discharged and the exhaust duct 14 rises. When the air inside the main body A is taken into the exhaust duct 14 as shown by an arrow Y7, the hot air in the grill heating chamber 9 is attracted to the fresh air, and the upper end of the exhaust duct 14 is lowered while the temperature is lowered. The air is exhausted from the opening 14A as indicated by an arrow Y8.

  The axial-flow type blower 106 for auxiliary exhaust is not always operated during the operation of the cooker, but is operated when cooking is performed in the grill heating chamber 9. This is because hot air is discharged from the grill heating chamber 9 to the exhaust duct 14 in this case. Further, the air flows Y7 and Y8 in FIG. 6 and the air flows Y1 to Y5 in FIG. 5 are not related at all and are not continuous flows.

  On the top surface of the top plate 21, as shown in FIGS. 1 and 3, circular guide marks 6RM indicating the approximate positions of the right IH heating source 6R, the left IH heating source 6L, and the radiant central electric heating source 7, which will be described later, 6LM and 7M are displayed by a method such as printing.

(Heating means D)
In the first embodiment of the present invention, as the heating means D, the right IH heating source 6R at the upper right position of the main body A, the left IH heating source 6L on the left, and the rear side on the left and right center line of the main body A. A certain radiation type central electric heating source 7 and a grill heating chamber 9 are provided with a pair of upper and lower radiation type electric heating sources 22 and 23 for a roaster. These heating sources are configured such that energization is controlled independently from each other by the control means F. Details of the control will be described later with reference to FIG.

(Right IH heating source)
The right IH heating source 6 </ b> R is installed inside the upper part chamber 10 that is partitioned and formed inside the main body case 2. A right IH heating coil 6RC is disposed on the lower surface side of the right position of the top plate 21. The upper end portion of this coil is close to the lower surface of the top plate 21 with a minute gap and serves as an IH (induction) heating source. In this embodiment, for example, a device having a maximum power consumption (maximum thermal power) of 3 kW is used. The right IH heating coil 6RC is formed by winding a bundle of about 30 thin wires of about 0.1 mm in a spiral shape, and winding this bundle (hereinafter referred to as a collective wire) while twisting one or more wires so that the outer shape becomes circular. Thus, it is finally formed into a disk shape. The diameter (maximum outer diameter dimension) of the right IH heating coil 6RC is about 180 mm.

  On the lower surfaces (rear surfaces) of the left and right IH heating coils 6LC and 6RC, as a magnetic flux leakage prevention material from the coils, a highly permeable material, for example, a plate or a rod made of ferrite is arranged. The illustration is omitted. The magnetic flux leakage prevention material does not need to cover the entire lower surfaces of the left and right IH heating coils 6LC and 6RC, and the magnetic flux leakage prevention material formed in a rod shape with a cross section of, for example, a square or a rectangle is predetermined so as to intersect the right IH heating coil 6RC. A plurality may be provided at intervals. A plurality of radials may be provided from the center of each coil.

  The position of the guide mark 6RM which is a circle (solid line in FIGS. 1 and 3) displayed on the top plate 21 does not completely coincide with the outermost peripheral position of the right IH heating coil 6RC of the right IH heating source 6R. Absent. The guide mark 6RM indicates a proper induction heating area. A broken-line circle in FIG. 3 indicates a rough outermost peripheral position of the right IH heating coil 6RC.

  The right IH heating coil 6RC may be divided into a plurality of parts so as to be energized independently. For example, an IH coil is wound in a spiral shape on the inside, and an IH coil wound in another large-diameter spiral shape is placed on a concentric circle and substantially on the same plane on the outer peripheral side of the IH coil. The object to be heated may be heated by three energization patterns of energizing the outer IH coil and energizing both the inner and outer IH coils. As described above, by heating at least one of the output level, duty ratio, output time interval of the high frequency power flowing through the two IH coils, or a combination thereof, it is possible to efficiently heat from a small pan to a large (large diameter) pan. (Japanese Patent No. 2978069 is known as a typical technical document using such a plurality of coils that can be independently energized).

  The infrared sensor 31R is an infrared temperature detection element installed inside a space provided at the center of the right IH heating coil 6RC, and the infrared light receiving part at the upper end part is directed to the lower surface of the top plate 21 (FIG. 2).

  The infrared sensor 31R is configured by a photodiode or the like that can measure the temperature by detecting the amount of infrared rays emitted from the heated object N such as a pan.

  For example, Japanese Patent Application Laid-Open No. 2004-95144 (Japanese Patent No. 3975865) and Japanese Patent Application Laid-Open No. 2006-310115 detect infrared rays emitted from an object to be heated according to the temperature thereof from below the top plate 21 using an infrared sensor. And Japanese Patent Application Laid-Open No. 2007-18787.

  The infrared sensor 31R is superior in that it collects infrared rays radiated from an object to be heated, and receives it in real time with little time difference and can detect the temperature from the amount of infrared rays (rather than the thermistor type). This infrared sensor 31R can be used regardless of whether the temperature of the top plate 21 made of heat-resistant glass or ceramics in front of the object to be heated and the temperature of the object to be heated are the same or regardless of the temperature of the top plate 21. The temperature of the heated object can be detected. That is, the infrared rays radiated from the object to be heated are devised so that they are not absorbed or blocked by the top plate 21. For example, the top plate 21 is selected from a material that transmits infrared rays having a wavelength range of 4.0 μm or 2.5 μm or less, while the infrared sensor 31R detects infrared rays having a wavelength range of 4.0 μm or 2.5 μm or less. The one is selected.

  As the temperature detection element, a heat transfer type detection element such as a thermistor type temperature sensor can be used instead of the infrared sensor 31R as described above. When a heat transfer type element such as a thermistor is used as the temperature detection element, it is inferior in capturing a rapid temperature change in real time as compared with the infrared temperature sensor described above, but from the top plate 21 or the object to be heated. Receiving radiant heat, it is possible to reliably detect the temperature of the bottom of the object to be heated and the temperature of the top plate 21 immediately below it. Further, the temperature of the top plate 21 can be detected even when there is no object to be heated. When the temperature detecting element is a heat transfer type such as a thermistor, the temperature sensing part is brought into direct contact with the lower surface of the top plate 21 or a member such as a heat transfer resin is interposed to cause the top plate 21 itself. You may make it grasp | ascertain the temperature of as accurately as possible. This is because if there is an air gap between the temperature sensing unit and the lower surface of the top plate 21, a temperature transmission is delayed.

(Left IH heating source)
The left IH heating source 6L is installed at a position contrasting with the right IH heating source 6R across the left and right center line of the main body A, and has the same configuration as the right IH heating source 6R. In this embodiment, for example, a device having a maximum power consumption (maximum thermal power) of 3 kW or 2.5 kW is used. The diameter (maximum outer diameter) of the left IH heating coil 6LC is about 180 mm when the maximum heating power is 3 kW, and about 170 mm when the maximum heating power is 2.5 kW.
It should be noted that the position of the guide mark 6LM which is a circle (solid line in FIGS. 1 and 3) displayed on the top plate 21 does not completely coincide with the outermost peripheral position of the left IH heating coil 6LC. The guide mark indicates a proper induction heating area. A broken-line circle in FIG. 3 indicates a rough outermost peripheral position of the left IH heating coil 6LC. Similarly to the right IH heating coil 6RC, an infrared type infrared sensor 31L is installed inside the center space (see FIG. 2).

  In the following description, the description of “left, right” in the name and “L, R” in the reference may be omitted for the contents shared for the members arranged in common on the left and right.

(Radiation type central electric heating source)
A radiant central electric heating source 7 (hereinafter referred to as “central heating source 7”) (see FIGS. 2 and 3) is inside the main body A, on the left and right center line of the top plate 21, and at the top. It is arranged at a position near the rear part of the plate 21. The central heating source 7 uses an electric heater (for example, a nichrome wire, a halogen heater, or a radiant heater) that is heated by radiation, and heats an object to be heated such as a pan through the top plate 21 from below. And, for example, the one having the capacity of maximum power consumption (maximum heating power) 1.2 kW is used.

  The central heating source 7 has a circular container shape whose entire upper surface is open, and the container-like cover 50 made of heat insulating material constituting the outermost peripheral portion has a maximum outer diameter of about 180 mm and a height (thickness). ) Is 15 mm.

  The position of the guide mark 7M, which is a circle (solid line in FIGS. 1 and 3) displayed on the top plate 21, does not completely coincide with the outermost peripheral position of the central heating source 7. The guide mark indicates an appropriate heating area. A broken circle in FIG. 3 indicates a rough outermost peripheral position of the central heating source 7.

(Radiation type electric heating source)
The grill heating chamber 9 formed in the shape of a rectangular box has wall surfaces on the left, right, top, bottom, and back sides formed of metal plates such as stainless steel and steel plates, and a pair of upper and lower radiation types such as a sheathed heater near the top ceiling and bottom. Electric heating sources 22 and 23 (see FIG. 6) are installed so as to spread substantially horizontally. Here, “spread” refers to a state in which the sheath heater is bent several times in the horizontal plane so as to meander in a wide range as much as possible, and the plane shape is W-shaped. Example.

  These two heaters 22 and 23 are energized simultaneously or individually to prepare roast cooking (for example, grilled fish), grill cooking (for example, pizza or gratin) or oven cooking (for example, by setting the ambient temperature in the grill heating chamber 9 (for example, Cakes and baked vegetables). For example, the radiant electric heating source 22 near the upper ceiling of the grill heating chamber 9 has a maximum power consumption (maximum heating power) of 1200 W, and the radiant electric heating source 23 near the bottom of the grill heating chamber 9 has a maximum power consumption of 800 W.

[Operating means E]
The operation means E of the cooking device in this embodiment includes a front operation unit 60 and an upper operation unit 61 (see FIGS. 1 to 4).

(Front operation unit)
Plastic front operation frames 62R and 62L are attached to the left and right front surfaces of the main body case 2, and the front surface of the operation frame is a front operation unit 60. The front operation unit 60 is configured to turn on / off all the power sources of the left IH heating source 6L, the right IH heating source 6R, the central heating source 7 and the radiant electric heating sources 22 and 23 of the grill heating chamber 9 all at once. An operation button 63A of the power switch 63 (see FIG. 2), a right operation dial 64R for opening and closing an electrical contact of a right power switch (not shown) for controlling energization of the right IH heating source 6R and the energization amount (thermal power) thereof, Similarly, a left operation dial 64L of a left control switch (not shown) for controlling the energization of the left IH heating source 6L and the energization amount (thermal power) thereof is provided. Power is supplied to all the electric circuit components shown in FIG. 7 via the main power switch 63.

  The front operation unit 60 is energized to the left IH heating source 6R by the left operation dial 64R and the left indicator lamp 66L that is lit only when the left IH heating source 6L is energized by the left operation dial 64L. And a right indicator lamp 66R that is lit only when it is in the closed state.

  When the left operation dial 64L and the right operation dial 64R are not used, they are pushed inward so as not to protrude from the front surface of the front operation unit 60 as shown in FIG. When the user presses the finger once and then releases it, it protrudes by the force of a spring (not shown) built in the front operation frame 62 (see FIG. 2), and the user can grab and turn around. Is. And if it turns to the left or right by one stage at this stage, the left IH heating source 6L and the right IH heating source 6R are energized for the first time (with the minimum set heating power of 120 W).

  Therefore, if either the protruding left operation dial 64L or right operation dial 64R is further rotated in the same direction, a predetermined electrical pulse generated from a built-in rotary encoder (not shown) according to the amount of rotation. Is read by the control means F, the energization amount of the heating source is determined, and the heating power can be set. Note that the left operation dial 64L and the right operation dial 64R are both in the initial state or are turned to the left or right in the middle, and the user presses once with a finger from the front surface of the front operation unit 60. When pushed into a predetermined position that does not protrude, both the left IH heating source 6L and the right IH heating source 6R can be de-energized (for example, even during cooking, if the right operation dial 64R is pushed in, the right IH heating is performed. The power source 6R is immediately turned off).

  If the operation button 63A of the main power switch 63 (see FIG. 1) is opened (OFF), then the operations of the right operation dial 64R and the left operation dial 64L are all invalidated. Similarly, the energization of the central heating source 7 and the radiant electric heating sources 22 and 23 in the grill heating chamber 9 are all cut off.

  Further, three independent timer dials (not shown) are provided at the lower front portion of the front operation frame 62. These timer dials energize the left IH heating source 6L, the right IH heating source 6R, and the central heating source 7 for a desired time (timer set time) from the start of energization, and automatically turn on the power after the set time elapses. This is for operating a timer switch (also called a timer counter, not shown).

(Top operation section)
As shown in FIG. 1, the upper surface operation unit 61 includes a right heating power setting operation unit 70, a left heating power setting operation unit 71, and a central operation unit 72. That is, the right heating power setting operation unit 70 of the right IH heating source 6R is located on the right side of the front upper surface of the top plate 21 across the center line of the main body A, and the central heating source 7 and grill heating are located on the center side. A central operation unit 72 of the radiant electric heating sources 22 and 23 installed in the chamber 9 is arranged, and a left heating power setting operation unit 71 of the left IH heating source 6L is arranged on the left side.

Further, the upper surface operation unit 61 is provided with a cooking container dedicated key that is operated when various cooking is performed using a cooking container 80 described later. In the first embodiment, a bread dedicated key 250 is provided as a cooking container dedicated key.
Note that as the cooking container dedicated key, one or more common keys for cooking using the cooking container 80 are provided instead of providing one or more dedicated keys for specific cooking (for example, bread), and each time the key is pressed. Further, an operable key (such as input keys 141 to 145 described later) on which a desired cooking name (for example, bread) is displayed is displayed in the integrated display means 100 described later, and the user points to the area of the key. The desired cooking start command may be input by touching with.

  Further, the upper surface operation unit 61 uses the cooking container 80 described later as the IH heating source 6 and the radiant electric heating sources 22 and 23 for cooking (hereinafter referred to as “combined cooking” or “combined cooking”). ) Is provided. In the first embodiment, combined cooking with the right IH heating source 6R and the radiant electric heating sources 22 and 23 of the grill heating chamber 9 can be performed, and the combined cooking key 251 has a right heating power to be described later. It is provided near the setting operation unit 70 (see FIG. 1).

  The composite cooking key 251 is not a fixed key, button, knob, or the like, but displays a desired key on a display screen (liquid crystal screen or the like) of the integrated display means 100 described later and uses the area of the key. The form which enables the input of compound cooking by a person touching with a finger may be sufficient. In other words, a key shape that can be input in a timely manner by software is displayed on the display screen of the integrated display unit 100, and an input operation may be performed by touching the key shape.

(Right heating power setting operation section)
In FIG. 9, the right heating power setting operation unit 70 is provided with a one-touch setting key unit 90 for each heating power that can easily set the heating power of the right IH heating source 6 </ b> R with a single press by the user. Yes. Specifically, it has three one-touch keys, a low thermal power key 91, a medium thermal power key 92, and a strong thermal power key 93. The low thermal power key 91 sets the thermal power of the right IH heating source 6R to 300 W, and the medium thermal power key. 92 is set to 750 W, and the strong heat key 93 is set to 2.5 kW. Further, a strong heating power key 94 is provided at the right end portion of the right one-touch key portion, and when the heating power of the right IH heating source 6R is desired to be 3 kW, this is pressed.

(Left thermal power setting operation section)
Similarly, the left heating power setting operation unit 71 for setting the heating power of the left IH heating source 6L is also provided with a one-touch key group similar to the right heating power setting operation unit 70, but is not shown in FIG. .

(Central control unit)
In FIG. 9, the central operation unit 72 includes an operation button 95 of an operation switch (not shown) for starting energization of the radiant electric heating sources 22 and 23 of the grill heating chamber 9, and an operation switch ( Operation buttons 96 (not shown) are provided side by side.

  The central operation unit 72 has a temperature at which the control temperature in the grill cooking by the radiant electric heating sources 22 and 23 and the electromagnetic cooking by the left IH heating source 6L and the right IH heating source 6R is set once or incrementally. Operation buttons 97A and 97B of adjustment switches (not shown) are provided in a horizontal row. In addition, setting switches 99A and 99B for setting the power on / off switch button 98 of the central heating source 7 and the heating power one by one in an additive or subtractive manner are also provided here.

  Further, a convenient menu key 130 is provided in the central operation unit 72. Fried food cooking (left IH heating source 6L, right IH heating source 6R is used), fried food preheating (left IH heating source 6L, right IH heating source 6R is used to heat oil to a predetermined preheating temperature), timer cooking (left When setting the IH heating source 6L, the right IH heating source 6R, the central heating source 7, and the heaters 22 and 23 provided in the grill heating chamber 9 by energizing them for the time set by the timer switch) When the convenient menu key 130 is pressed, a desired input screen or status display screen can be easily read and displayed on the integrated display means 100 described later.

  A right IH convenient menu button 131R including a hard button is provided on the right side of the pan dedicated key 250, and is a setting button for performing various settings for the right IH heating source 6R. Similar setting buttons are provided for the left IH heating source 6L (not shown).

  When a timer dial (not shown) for operating / starting the above-described timer counter (not shown) is operated, the elapsed time from the start time is measured and displayed on the liquid crystal display screens 45R and 45L. The display light of the liquid crystal display screens 45R and 45L is transmitted through the top plate 21, and the elapsed time is clearly displayed to the user in units of “minutes” and “seconds”.

[Control means F]
(Control circuit)
The circuit board 41 is a printed wiring board on which an inverter circuit that supplies predetermined high-frequency power to the right IH heating source 6R and the left IH heating source 6L is mounted, and is arranged in the component case 34 (FIG. 8). reference). The circuit board 41 has an outer dimension substantially comparable to the internal space shape of the component case 34, and the main body case constituting the outer portion of the main body portion A on the side far from the grill heating chamber 9 in the component case 34. 2, it is installed on the side approaching close to a few millimeters or less.

  FIG. 7 is a block diagram showing the main configuration of the control circuit of this cooking device. The energization control of the heating cooker is performed by an energization control circuit 200 configured to include one or a plurality of microcomputers. The energization control circuit 200 includes an input unit 201, an output unit 202, a storage unit 203, and an arithmetic control unit 204 (CPU), and is supplied with DC power via a constant voltage circuit (not shown). It serves as a central control means for controlling the heating means D and the display means G.

In FIG. 7, an inverter circuit 210 </ b> R for the right IH heating source 6 </ b> R is connected to a commercial power supply with a voltage of 100 V or 200 V via a rectifier circuit (also referred to as a rectifier bridge circuit) 221.
Similarly, an inverter circuit 210L of the left IH heating source is similarly connected to the commercial power supply via the rectifier bridge circuit 221 in parallel with the inverter circuit 210R of the right IH heating source.

  The inverter circuits 210R and 210L referred to here are the rectifier bridge circuit 221 whose input side is connected to the bus of the commercial power source shown in FIG. 7, and the coil 222 and the smoothing capacitor connected to the DC side output terminal. 223 includes a DC circuit composed of 223, a resonant capacitor 224, a power control semiconductor IGBT 225 serving as a switching means, a drive circuit 228, and a flywheel diode 226. The IH coils 6RC and 6LC are not included. Not in.

  The inverter circuit 210R of the right IH heating source 6R includes a right IH heating coil 6RC shown in FIG. 7, a rectifier bridge circuit 221 whose input side is connected to a bus of a commercial power source, and a coil 222 connected to this DC side output terminal. And a DC circuit comprising the smoothing capacitor 223, a resonance circuit comprising a parallel circuit of the right IH heating coil 6RC and the resonance capacitor 224, one end of which is connected to a connection point between the coil 222 and the smoothing capacitor 223, An IGBT 225 serving as switching means having a collector side connected to the other end is provided.

  The emitter of the IGBT 225 is connected to a common connection point between the smoothing capacitor 223 and the rectifying bridge circuit 221. The flywheel diode 226 is connected between the emitter and collector of the IGBT 225 so that the anode is on the emitter side. N indicates a metal pan to be heated.

Reference numeral 227 denotes a current detection sensor that detects a current flowing through a resonance circuit including a parallel circuit of the right IH heating coil 6RC and the resonance capacitor 224R. The detection output of the current detection sensor 227 is supplied to the input part of the energization control circuit 200, and when a pot that is inappropriate for induction heating is used, or because of some accident or the like, it exceeds a predetermined current value by a predetermined value or more. When a difference undercurrent or overcurrent is detected, the energization control circuit 200 controls the IGBT 225 via the drive circuit 228, and the energization of the right IH heating coil 6RC is instantaneously stopped.
Similarly, the inverter circuit 210L of the left IH heat source 6L has the same circuit configuration as that of the inverter circuit 210R of the right IH heat source, and thus description thereof is omitted, but 6LC is a left IH heating coil and 224L is a resonance capacitor.

  Although not shown, the current detection sensor 227 is similarly provided in the inverter circuit 210L of the left IH heating source 6L. The current detection sensor 227 includes a shunt that measures current using a resistor and a method that uses a current transformer.

  In a heating cooker that heats an object N to be heated by an induction heating method, a power control circuit for flowing high-frequency power to the IH heating coils 6RC and 6LC is called a so-called resonance inverter. A switching circuit element (IGBT 225 in FIG. 7) is about 20 to 40 KHz to the circuit in which the inductance of the IH heating coils 6RC and 6LC including the object to be heated N (metal) and the resonance capacitor (224 in FIG. 7) are connected. The on / off control is performed at the drive frequency. Further, the resonance type inverter includes a current resonance type which is said to be suitable for a 200 V power supply and a voltage resonance type which is said to be suitable for a 100 V power supply. Such a resonant inverter circuit has a configuration called a so-called half-bridge circuit and a full-bridge circuit depending on how the connection destination of the IH heating coils 6RC, 6LC and the resonant capacitor 224 is switched by a relay circuit. Divided. The inverter circuits 210R and 210L of the present invention may be configured as a half bridge circuit or a full bridge circuit.

  As described above, when the object to be heated N (metal) is induction-heated by energizing the IH heating coils 6RC and 6LC, in the case of the object to be heated N of a magnetic material such as iron, a resonance capacitor (224 in FIG. 7) is used. A switching circuit element (IGBT 225 in FIG. 7) is controlled to be turned on / off at a driving frequency of about 20 to 40 KHz, and a current of about 20 to 40 KHz is supplied to the connected circuit.

  On the other hand, when the object to be heated N is made of a material having a high electric conductivity such as aluminum or copper, a large current is passed through the IH heating coils 6RC and 6LC in order to obtain a desired heating output. It is necessary to induce a large current on the bottom surface of N. For this reason, in the case of an object to be heated N made of a material having a high electrical conductivity, on / off control is performed at a driving frequency of 60 to 70 KHz.

  211 is a heater drive circuit for the central heating source 7, 212 is a heater drive circuit for driving the radiant electric heating source 22 of the grill heating chamber 9, and 213 is a heater drive for driving the radiant electric heating source 23 of the grill heating chamber 9. Reference numeral 214 denotes a heater driving circuit that drives the heater of the deodorizing catalyst 121 provided in the middle of the exhaust duct 14, and 215 denotes a driving circuit that drives the liquid crystal screen of the integrated display means 100.

  Reference numeral 33 denotes a drive circuit for the motor 300 for driving the blower 30 to keep the internal space of the main body A in a certain temperature range, and reference numeral 231 denotes a drive circuit for the motor 106B of the blower 106 installed in the exhaust duct 14. is there.

(Temperature detection circuit)
In FIG. 7, reference numeral 240 denotes a temperature detection circuit, to which temperature detection information from the following temperature detection elements is input.
(1) An infrared sensor 31R provided at the center of the right IH heating coil 6RC.
(2) An infrared sensor 31L provided at the center of the left IH heating coil 6LC.
(3) A temperature detection element 241 provided in the vicinity of the electric heater of the central heating source 7.
(4) A temperature sensor 242 for detecting the internal temperature of the grill heating chamber 9.
(5) A temperature detection element 243 installed in the vicinity of the integrated display means 100.
(6) Temperature detecting elements 244 and 245, which are attached in close contact with the two radiation fins 43A and 43B inside the component case 34 and individually detect the temperatures of the two radiation fins.

  Two or more temperature detection elements may be provided for the temperature detection object. For example, the infrared sensor 31R of the right IH heating source 6R may be provided in the central portion and the outer peripheral portion of the right IH heating coil 6RC to achieve more accurate temperature control. Further, the temperature detection element may be configured by using a different principle. For example, the temperature detection element at the center of the right IH heating coil 6RC may be an infrared type, and the one provided at the outer peripheral part may be a thermistor type.

  The drive circuit 33 of the motor 300 of the blower 30 always operates the blower 30 and cools it with wind according to the temperature measurement status from the temperature detection circuit 240 so that each temperature measurement portion does not become higher than a predetermined temperature.

[Display means G]
(Integrated display means)
The integrated display means 100 is provided on the front side in the front-rear direction at the center of the top plate 21 in the left-right direction. The integrated display means 100 is mainly composed of a liquid crystal panel, and is provided in the vicinity of the lower surface of the top plate 21 so that display light is emitted from the lower surface thereof through the top plate 21 (transmitted).

The integrated display means 100 inputs the energization state (thermal power, time, etc.) of the left IH heating source 6L, the right IH heating source 6R, the central heating source 7, the radiant electric heating sources 22 and 23 of the grill heating chamber 9, etc. , Something that can be confirmed. That is, in correspondence with the following three scenes, heating conditions such as operating conditions and thermal power are clearly displayed by characters, illustrations, graphs, and the like.
(1) Functions of left and right IH heating sources 6L and 6R (whether cooking operation is in progress, etc.)
(2) Function of central heating source 7 (whether cooking is in progress, etc.)
(3) In the case of cooking in the grill heating chamber 9, the operating procedure and function for performing the cooking (for example, whether the roaster, grill, or oven is currently being cooked)

  The liquid crystal screen used in the integrated display means 100 is a known dot matrix type liquid crystal screen. In addition, a high-definition screen (QVGA with a resolution of 320 × 240 pixels or 640 × 480 dots, equivalent to VGA capable of displaying 16 colors) can be realized, and a large number of characters can be displayed even when characters are displayed. Can do. The liquid crystal screen is not limited to a single layer, but may be one that displays in two or more layers in order to increase display information. The size of the display area of the liquid crystal screen is a rectangle having a length (front-rear direction) of about 4 cm and a width of about 10 cm.

Further, the screen area for displaying information is divided into a plurality of heating sources (see FIG. 9). For example, the screen is assigned to a total of 10 areas and is defined as follows.
(1) Corresponding area 100L of the left IH heating source 6L (a total of two display areas 100L1 for thermal power and 100L2 for time)
(2) Corresponding area 100M of the central heating source 7 (a total of two display areas 100M1 for thermal power and 100M2 for time)
(3) Corresponding area 100R of right IH heating source 6R (a total of two display areas 100R1 for thermal power and 100R2 for time)
(4) Cooking display area 100G of the grill heating chamber 9
(5) A guide area (100 GD) that is used in common for all heating sources and displays reference information for various types of cooking as needed or by user operation, and notifies the user when abnormal operation is detected or improper operation is used. 1)
(6) Key display area 100F displaying six independent input keys 141, 142, 143, 144, 145, and 146 having a function of directly inputting various cooking conditions and the like.
(7) Optional display area 100N used in common for all heating sources
If the arbitrary display area 100N is pressed, detailed information useful for cooking can be displayed in the guide area 100GD of the integrated display means 100 in characters.
In addition, the background color of the display area is usually displayed in a unified color (for example, white), but the display area 100R and the display area 100G are in the case of “combined cooking” as described above. The color is changed to a color (for example, yellow, blue, etc.) that is the same color and different from the display areas 100L and 100M of the other heating sources. Such a color change can be achieved by switching the operation of the backlight when the display screen is a liquid crystal display, but detailed description thereof is omitted.

  Each of the above 10 areas (display areas) is realized on the liquid crystal screen of the integrated display means 100, but is not physically formed or partitioned on the screen itself. Absent. In other words, since it is established by screen display software (microcomputer program), the area, shape, and position can be changed each time by that software. The heating source 6L, the central heating source 7, the right IH heating source 6R and the like are always arranged in the same order in accordance with the left and right order of the respective heating sources. That is, on the screen, information about the left IH heating source 6L on the left side, the center heating source 7 in the middle, and the right IH heating source 6R on the right side are displayed. The cooking display area 100G of the grill heating chamber 9 is always displayed in front of the corresponding area 100L of the left IH heating source 6L, the corresponding area 100M of the central heating source 7, and the corresponding area 100R of the right IH heating source 6R. The Further, the key display area 100F of the input key is always displayed in the forefront in any scene.

  Further, the input keys 141 to 146 employ contact type keys whose capacitance changes when the user touches a finger or the like, and the upper surface of the integrated display means 100 at a position corresponding to the key surface of the user. An effective input signal to the energization control circuit 200 is generated by lightly touching the upper surface of the glass plate covering the cover.

  On the glass plate constituting the parts (areas) of the input keys 141 to 146, characters, figures, and symbols (including the arrows of the keys 143 and 145 in FIG. 9) indicating the key input function are printed or stamped. However, on the liquid crystal screen below these keys, characters, figures and symbols indicating the key input function are displayed for each operation scene of the input keys. That is, the display and function of the input keys 141 to 146 change depending on the scene.

  Not all input keys 141 to 146 are always displayed at the same time. For keys that are invalid even if operated (input keys that do not need to be operated), the input function characters and figures are not displayed on the liquid crystal screen as in the input keys 144 in FIG. Yes. If the input keys 141 to 146 in the active state are operated, a valid operation command signal is transmitted to the control program that determines the operation of the energization control circuit 200.

  The input key 146 is a key that is operated when it is desired to determine cooking conditions and to start cooking. When the cooking operation is started once this is operated, the input key is changed to “stop”. The input commands of the other input keys 141 to 145 may change each time, and effective input functions can be easily identified by characters, figures, symbols, etc. displayed each time.

(Thermal power indicator lamp)
On the right front side of the top plate 21, a right heating power display lamp 101R for displaying the magnitude of the heating power of the right IH heating source 6R is provided at a position between the right IH heating source 6R and the right heating power setting operation unit 70. Yes. The right thermal power display lamp 101R is provided in the vicinity of the lower surface of the top plate 21 so that display light is emitted from the lower surface thereof through the top plate 21 (transmitted).
Similarly, a left heating power display lamp 101L that displays the magnitude of the heating power of the left IH heating source 6L is located at a position between the left IH heating source 6L and the left heating power setting operation unit 71 on the left front side of the top plate 21. It is provided in the vicinity of the lower surface of the top plate 21 so that display light is emitted from the lower surface thereof through the top plate 21 (transmitted). These thermal power display lamps 101R and 101L are not shown in the circuit configuration diagram of FIG.

[Cooking container]
In FIG. 10, a cooking container 80 is a cooking container formed by press molding or the like from a thin sheet metal having a thickness of about 1 to 2 mm having magnetism such as iron or stainless steel. The cooking vessel 80 is inserted into the grill heating chamber 9 from the front opening 9A and can be used by being placed on the grill 109, and induction heating by the left IH heating source 6L or the right IH heating source 6R. It is possible.

  The cooking container 80 includes an upper container 81 having a circular planar shape and a lower container 82 having a circular planar shape. The upper container 81 and the lower container 82 have the same planar outer shape, and both the upper container 81 and the lower container 82 have a diameter of W1, and the depth of the lower container 82 with respect to the depth H1 of the upper container 81. The length H2 has a dimensional relationship about 1.4 times that. For example, H1 = 25 mm and H2 = 35 mm.

  Metal flanges 84 and 86 that are used as a handle when the user carries are formed on the peripheral edge of the opening of the upper container 81 and the lower container 82, respectively, and are formed by being integrally bent or provided by fixing means such as welding. is there. Here, the plate | board thickness of the collar parts 84 and 86 is 2 mm, respectively.

  The collar portion 84 of the upper container 81 is located at a position away from the ceiling surface 83 by a distance H3, while the collar portion 86 of the lower container 82 is located away from the bottom surface 85 by a distance H4. Here, H3 is 25 mm, for example, and H4 is 35 mm. The sticking width of the collars 84 and 86 is at least 30 mm so that the user can firmly hold the upper and lower surfaces with hands wearing mittens. In this embodiment, the sticking width is 60 mm. ing.

  You may make it the structure which aligns both so that the opening periphery of the upper container 81 and the lower container 82 may face each other (the state where both centerlines corresponded and it overlapped up and down completely). For example, by providing through holes in two or more locations on one flange 84 and providing a plurality of protrusions that fit into the through holes on the other flange 86, the through holes and the protrusions are fitted. The mutual positions may be fixed by (not necessarily close fitting).

  The ceiling surface 83 of the upper container 81 and the bottom surface 85 of the lower container 82 are preferably as flat as possible as a whole. Although the detailed reason is mentioned later, it is because the usage method of induction heating by the left IH heating source 6L or the right IH heating source 6R is assumed.

  The positions of the flanges 84 and 86 are out of the outermost peripheral end 6E of the right IH heating coil 6RC and the left IH heating coil 6LC. Due to this positional relationship and the idea of providing the above-mentioned facing distances H3 and H4, the upper container 81 and the lower container 82 are placed in the state where either the ceiling surface 83 or the bottom surface 85 faces the top surface of the top plate 21. Even when heated by the IH heating coil 6RC or the left IH heating coil 6LC, the collar portions 84 and 86 themselves are prevented from being directly heated by induction heating. In other words, since the strength of the magnetic field that is induction-heated is inversely proportional to the cube of the distance away from the IH heating coils 6RC and 6LC, the flanges 84 and 86 that are sufficiently spaced apart are the bottom surface 85 and the peripheral wall surface of the cooking vessel 80. Like this, it is not directly heated by induction heating.

  GA is a minute gap formed between the flanges 84 and 86 in a state where the openings of the upper container 81 and the lower container 82 face each other. Although this micro gap is ideally zero, it is actually formed with a small size due to manufacturing restrictions. However, since the width of the flanges 84 and 86 is 30 mm or more as described above, During cooking, a closed space 87 that is substantially isolated from the outside is formed inside the cooking vessel 80.

  The maximum width dimension W2 of the cooking container 80 is close to the maximum width (effective width dimension) of the inner space of the grill heating chamber 9. For example, the grill heating chamber 9 in this embodiment has an effective inner width of 360 mm, a depth of 290 mm, and a height of about 120 mm, so that W2 is 350 mm.

  H5 is the maximum height dimension of the cooking container 8, and is a dimension from the upper surface of the grill 109 shown in FIG. 6 to the lower surface of the radiant electric heating source 22 that is a radiant electric heating source lying on the upper side ( It is set smaller than H6) shown in FIG. 6, and when the cooking container 8 is moved in the front-rear direction as the door 13 is opened and closed, it moves forward without colliding with the radiant electric heating source 22 on the upper side. Finally, the grill heating chamber 9 can be pulled forward from the front opening 9A. In this embodiment, H5 is, for example, 59 mm (= H3 + H4 + plate thickness 2 mm of flange 84 + plate thickness 2 mm of flange 86). H6 is 65 mm.

  Since the heating cooker of this embodiment is called a built-in type or a built-in type, the height of the main body A is limited by about 23 cm due to the standard of the sink or the like on which the cooker is installed. However, the maximum height of the inner space of the grill heating chamber 9 is also limited, but there is no limitation on the effective internal height of the grill heating chamber 9 in the case of a type of cooker called a stationary type. For this reason, as a result, the thickness (H5) dimension of the cooking container 80 can be made larger. This is because the facing distance (H6) from the upper surface of the grill 109 shown in FIG. 6 to the lower surface of the radiant electric heating source 22 can be secured widely.

[Operation of cooking device]
Next, the outline | summary of operation | movement of the heating cooker which has said structure is demonstrated.
When the power is turned on, a basic operation program from the turning on to the start of cooking preparation is stored in the storage unit 203 inside the energization control circuit 200.

(Abnormality monitoring before cooking)
First, the power plug is connected to a 200V commercial power source, and the operation button 63A (see FIG. 2) of the main power switch 63 is pressed to turn on the power.
Then, a predetermined low power supply voltage is supplied to the energization control circuit 200 via a constant voltage circuit (not shown), and the energization control circuit 200 is activated. The motor drive circuit 161 for driving the drive motor 31 of the blower 30 is preliminarily driven when self-diagnosis is performed by the control program of the energization control circuit 200 itself and there is no abnormality. Further, the left IH heating source 6L, the right IH heating source 6R, and the driving circuit 215 of the liquid crystal display unit of the integrated display unit 100 are also preliminarily activated.

The temperature detection circuit 240 reads temperature data from each of the sensors 31R, 31L, 241, 242, 244, and 245, which are temperature sensors, and sends the data to the energization control circuit 200.
As described above, the energization control circuit 200 collects data such as circuit currents, voltages, temperatures, and the like of main components, and therefore abnormal heating determination is performed as abnormality monitoring control before cooking. For example, when the temperature around the liquid crystal substrate of the integrated display means 100 is higher than the heat-resistant temperature of the liquid crystal display substrate (for example, 70 ° C.), it is determined that the temperature is abnormally high.

  The current detection sensor 227 detects a current flowing through a resonance circuit composed of a parallel circuit of the right IH heating coil 6RC and the resonance capacitor 224, and this detection output is supplied to the input unit 201 of the energization control circuit 200 and stored in the storage unit 203. When an undercurrent or an overcurrent is detected as compared with the regular current value of the stored determination reference data, the energization control circuit 200 determines that there is some kind of accident or continuity failure, and determines that it is abnormal.

  When there is no abnormality determination by the above self-diagnosis steps, “cooking start preparation is completed”. However, when an abnormality determination is made, a predetermined abnormality process is performed and cooking cannot be started.

(Process to detect the suitability of the object to be heated)
Next, a case where the right IH heating source 6R is used will be described as an example of the case where the cooking mode is shifted to after the pre-cooking abnormality monitoring process is completed.
First, the right operation dial 64R of the front operation unit 60 is turned right or left (the heating power is set according to the amount of rotation).

  An operation signal from the front operation unit 60 is input to the energization control circuit 200, and operation signals of various input keys from the upper surface operation unit 61 are input to the energization control circuit 200, and cooking conditions such as a heating power level and a heating time are set. Is done.

  Next, the energization control circuit 200 drives the drive circuit 228 to drive the inverter circuit 210R of the right IH heating source. Since the integrated display means 100 is driven by the drive circuit 215, cooking conditions such as heating power and cooking time are displayed in the display area. Since the drive circuit 228 applies a drive voltage to the gate of the IGBT 225, a high frequency current flows through the right IH heating coil 6RC. However, the suitability of the heated object N such as a pan is detected as follows without heating with high thermal power from the beginning.

  The current detection sensor 227 detects a current flowing in a resonance circuit including a parallel circuit of the right IH heating coil 6RC and the resonance capacitor 224, and a detection output is supplied to an input unit of the energization control circuit 200. When an undercurrent or an overcurrent is detected as compared with the normal current value due to some accident or poor conduction, the energization control circuit 200 determines that there is an abnormality. The energization control circuit 200 has a function of determining whether or not the size of the pan (cooking utensil) to be used is appropriate, in addition to the above type of abnormality determination function.

  Specifically, a predetermined power (for example, 1 kW) is supplied to the resonance circuit including the parallel circuit of the right IH heating coil 6RC and the resonance capacitor 224 instead of the heating power (electric power) set by the user for the first few seconds. Current input sensor value is detected by the current detection sensor 227.

That is, when the energization control circuit 200 drives the IGBT 225 serving as the switching means by outputting a drive signal with the same conduction ratio with a predetermined power, a pot having a diameter smaller than the area of the right IH heating coil 6RC is placed on the top plate 21. The current flowing through the current detection sensor 227 when the current detection sensor 227 is placed is equal to that of the current detection sensor 227 when a pan having a diameter larger than the area of the right IH heating coil 6RC is placed on the top plate 21. It is already known that it becomes smaller than the current flowing through the part. Therefore, the value of the current flowing through the portion of the current detection sensor 227 when an excessively small pan is placed in advance from the experimental results or the like is prepared as determination reference data.
Then, when a current that is too small is detected by the current detection sensor 227, it can be estimated on the energization control circuit 200 side that the battery is in an abnormal usage state, and the process shifts to an abnormal processing route.

  In addition, when the energization control circuit 200 changes the energization rate for the switching means 225 by itself and, for example, the heating power set by the user can maintain and ensure a normal heating state by reducing the conduction ratio to an allowable range, it is automatically The power adaptive control process is executed, and when a small current value is detected, it is not all unconditionally going to the abnormal process.

  In the state in which the determination of the pan is performed as described above, the characters “Now determining whether the pan is suitable” are first displayed in the display area 100R2 of the right IH heating source 6R as shown in FIG. Then, after a few seconds, according to the determination result of the abnormal current detection monitoring process, in the case of a pan that is too small, the display area 100R2 displays “The pan to be used is too small” as shown in FIG. ) "Is displayed. In the present invention, the minimum diameter dimension of a suitable pan is not limited to the above “10 cm or more”, but is appropriately set to a numerical value depending on the diameter dimension of the heating coil.

  When this pan suitability determination result is issued, the display areas 100R1 and 100R2 of the right IH heating source 6R are enlarged several times from the state of FIG. 9, and it is displayed that the pan is not appropriate in the display area. Is done. When both the left IH heating source 6L and the central heating source 7 are not used, the display areas 100R1 and 100R2 of the right IH heating source 6R are the display areas 100L1 and 100L2 of the left IH heating source 6L and the central heating source 7, respectively. , 100M1, and 100M2.

After that, when the user does not take measures such as changing the pan, the energization control circuit 200 is not stopped, and after a certain time from the point when the pan is displayed in the display area E, the right IH heating source once. The heating operation is automatically stopped.
If the user changes the pan to a larger one and performs an operation to start cooking again, cooking can be resumed again.

  When the pan detection operation as described above is performed and it is determined that the pot is a suitable pan (object to be heated N), the energization control circuit 200 automatically adjusts so that the right IH heating source 6R exhibits the original set thermal power. The energization control process which adapts automatically is executed. As a result, the pan of the object to be heated N becomes hot due to the high frequency magnetic flux from the right IH heating coil 6RC, and the electromagnetic induction heating cooking operation (cooking mode) is started.

(Thermal power adjustment processing, cooling processing)
The direct current obtained by the rectifier bridge circuit 221 and the smoothing capacitor 223 is input to the collector of the IGBT 225 that is a switching element. When the drive signal from the drive circuit 228 is input to the base of the IGBT 225, the on / off control of the IGBT 225 is performed. By combining the on / off control of the IGBT 225 and the resonance capacitor 224, a high frequency current is generated in the right IH heating coil 6RC, and the high frequency current is placed on the top plate 21 above the right IH heating coil 6RC by an electromagnetic induction effect caused by the high frequency current. Eddy currents are generated in the heated object N such as a pan. Thus, the eddy current generated in the object to be heated N becomes Joule heat, the object to be heated generates heat, and can be used for cooking.

  The drive circuit 228 has an oscillation circuit, and a drive signal generated by the oscillation circuit is supplied to the base of the IGBT 225 to control the IGBT 225 on / off. By adjusting the oscillation frequency and oscillation timing of the oscillation circuit of the drive circuit 228, the conduction ratio, conduction timing, current frequency, etc. of the right IH heating coil 6RC are adjusted, and the heating power of the right IH heating coil 6RC can be adjusted. .

  In addition, when the energization stop command of the right IH heating source 6R is issued, the energization of the right IH heating source 6R is stopped, but the blower 30 continues to operate for 2 minutes to 5 minutes even after the energization stop. Thereby, the hot air stays in the vicinity of the right IH heating coil 6RC of the right IH heating source 6R immediately after the stop of the blowing from the blower 30, and the overshoot problem that the temperature rapidly increases can be prevented. Further, it is possible to prevent the adverse effect that the temperature of the integrated display unit 100 becomes high. This operation continuation time is determined from a formula or numerical table that is determined in advance by the energization control circuit 200 in accordance with conditions such as the temperature rise until the energization is stopped, the room temperature, and the operating heat power level of the heating source.

  However, when it is found that the cooling fan itself is out of order, such as when an abnormal current from the blower 30 is detected (for example, when only the temperature of the heat radiation fins 43A and 43B is increased), the blower 30 At the same time, the energization of is stopped.

The liquid crystal display substrate of the integrated display means 100 is heated by reflected heat from the bottom of the article to be heated N heated during cooking by the left and right IH heating sources 6R and 6L or by radiant heat from the top plate 21.
Further, when the used hot tempura pan is placed on the central portion of the top plate 21 as it is, it receives heat from the hot pan (near 200 ° C.).
Therefore, in the first embodiment, air is cooled from both the left and right sides by the blower 30 in order to suppress the temperature rise of the integrated display means 100.

  Thus, when the blower 30 is driven under a normal operating environment, air outside the main body 1 is sucked into the fan case 37 from the suction port 37B of the suction cylinder 37A of the fan case 37. The sucked air is discharged forward in the horizontal direction from the exhaust port (exit) 37C by the blade portion 30F rotating at high speed inside the fan case 37.

There is a component case 34 connected in close contact with the fan case 37 at the front position of the exhaust port 37C, and the air introduction port communicates with the exhaust port 37C in close contact with the exhaust case 37C. Inside, air is sent from the blower 30 so as to increase its internal pressure (static pressure). A part of the sent cooling air is discharged from the first exhaust port 34 </ b> A on the side near the exhaust port 37 </ b> C on the upper surface of the component case 34.
The temperature of the released air is almost the same as the temperature immediately after exiting from the exhaust port 37C because it does not cool a high-temperature heating element or a heat-generating electrical component on the way, and remains fresh air. .

  Then, the cooling air sent from the first exhaust port 34A to the ventilation space 42F of the cooling duct is ejected upward from the ejection hole 42C as indicated by an arrow Y3 in FIGS. It collides with the lower surface of the heating coil 6RC and effectively cools the coil. If the shape of the right IH heating coil 6RC has a gap through which the air cooling air partially penetrates, the cooling air from the first exhaust port 34A passes through the gap. To cool down.

  On the other hand, the cooling air sent into the component case 34 with pressure from the blower 30 is not directed to the surface of the circuit board 41 and does not flow near the surface. Since the cooling air passes between a large number of heat exchange fin elements centering on the portion of the radiation fins 43A and 43B that are structured to protrude from the surface (one side surface) of the circuit board 41, the radiation fins 43A and 43B are mainly used. To be cooled.

  Further, in the cooling air pushed from the exhaust port 37C (arrow Y2 in FIG. 8), the main flow, which is the fastest part, flows straight from the exhaust port 37C forward as indicated by the arrow Y4 in FIG. The component case 34 is ejected from the second exhaust port 34B located at the most downstream position in the flow of the cooling air. Since the second exhaust port 34B has an opening area several times larger than the first exhaust port 34A, most of the cooling air pushed into the component case 34 from the exhaust port 37C is the second exhaust gas. It is ejected from the mouth 34B.

  The blown cooling air is guided into the ventilation spaces 42G and 42H of the cooling duct, and most of the cooling air is shown by arrows Y4 and Y5 in FIG. 8 from the discharge holes 42C formed in the upper surface of the upper case 42A. And collides with the lower surface of the right IH heating coil 6RC just above it to cool the coil effectively.

  A part of the cooling air guided into the ventilation space 42H of the cooling duct is composed of the right thermal power display lamp 101R and the left thermal power display lamp 101L that display various electric / electronic components 56 and the thermal power during induction heating cooking with light. Each light-emitting element (LED) or the like is guided into a front part case 46 in which it is housed. Specifically, the cooling air of the blower 30 enters the ventilation space 42H of the cooling duct 42 from the second exhaust port 34B of the component case 34, and from here the cooling duct 42 formed corresponding to the ventilation space 42H. The air passes through the air vent 42K and enters the air vents 46R and 46L of the lower duct 46A positioned so as to be in close contact with the air vent 42K.

  As a result, the liquid crystal display screens (liquid crystal display portions) 45R and 45L are first cooled from below by the cooling air that has entered the front part case 46, and then flow through the front part case 46 and finally the upper part from the notch 46C. The built-in components and the like are sequentially cooled in the process of being discharged into the component chamber 10. As a result, the liquid crystal display screens 45R and 45L, the integrated display means 100, the various electric / electronic components 56, the right thermal power display lamp 101R that displays the thermal power during induction heating cooking with light, the light emitting elements for the left thermal power display lamp 101L, and the like in sequence. Cooled with cooling air. In particular, the cooling air guided into the front part case 46 is not a wind that cools the left and right IH heating coils 6LC and 6RC that become high during the induction heating operation, so the temperature is low, and the liquid crystal display screens 45R and 45L. The integrated display means 100 and the like continue to be cooled so that the temperature rise is effectively suppressed while the amount of cooling air is small.

  As shown in FIGS. 2, 3, 5, and 8, the cooling air jetted from the numerous jet holes 42C of the cooling duct 42 flows backward in the upper part chamber 10 as indicated by arrows Y5 and Y6. . The cooling air discharged from the notch 46C to the upper part chamber 10 is joined to the flow of the cooling air, and finally flows into the rear exhaust chamber 12 opened to the outside by the main body portion A, so that the rear exhaust chamber 12 is finally obtained. Discharged from.

(Operation when heater is heated during IH heating)
Next, a case where the radiation type electric heating sources 22 and 23 in the grill heating chamber 9 are energized during heating by the right heating source 6R will be described.
Various types of cooking can be performed inside the grill heating chamber 9 by energizing the radiant electric heating sources 22 and 23 simultaneously or individually, but hot air is generated inside the grill heating chamber 9 as a result of this cooking.
For this reason, the internal pressure of the grill heating chamber 9 naturally increases, and naturally rises in the exhaust duct 14 from the rear exhaust port 9E. In that process, the heater of the deodorization catalyst 121 is energized by the drive heater drive circuit 214, and the odor component in the exhaust gas is decomposed by the deodorization catalyst 121 which is at a high temperature.

  On the other hand, since an axial-flow type blower 106 for auxiliary exhaust is provided in the middle of the exhaust duct 14, the blower 106 is operated with respect to hot air rising up the exhaust duct 14 as indicated by an arrow Y7. By taking the air inside the main body A into the exhaust duct 14, the hot air in the grill heating chamber 9 is attracted to the fresh air, and the temperature decreases, as indicated by the arrow Y8 from the upper end opening 14A of the exhaust duct 14. Exhausted.

  As described above, the exhaust flow from the upper end opening 14A of the exhaust duct 14 attracts the air in the rear exhaust chamber 12 adjacent to the upper end opening 14A to be discharged to the outside. That is, the air in the gap 26 between the grill heating chamber 9 inside the main body and the horizontal partition plate 25 and the air inside the upper part chamber 10 are also discharged through the rear exhaust chamber 12.

(Cooking using cooking container 80)
Next, the operation in the case of performing heat cooking using the cooking container 80 will be described. The cooking container 80 can perform various types of heat cooking including bread, paella, and fruit tart, but will explain the operation when making bread, and then explain the operation when performing other heat cooking. . It is assumed that cooking by other heat sources such as the right IH heating source 6R is not performed at the same time.

  In the cooking container 80 according to the first embodiment, bread fermentation and baking can be performed. FIG. 12 shows an example in which bread dough is fermented and then a baking operation is continuously performed.

  When performing bread dough fermentation for bread making first, the cooking container 80 is used. The bread dough is placed in the cooking container 80 by putting the bread dough in the lower container 82 and covering the upper container 81. Then, the door 13 of the heating cooker 2 is pulled forward and pulled out to place the cooking container 80 on the grill 109, and the door 13 is pushed in again and closed.

  The subsequent operation is as shown in FIG. In FIG. 12, when the main power switch 63 is turned on in the power OFF state (S1), the power supply is activated (S2). Subsequently, when the dedicated bread key 250 provided on the upper surface operation unit 61 is pressed once, the bread / fermentation mode ( S3). Here, the time setting for bread fermentation is performed. The time setting is appropriately determined by the user depending on the amount of bread to be cooked, the temperature, the ingredients, etc., but the time based on these parameters such as the quantity, the temperature, the type of ingredients, etc. is displayed in the integrated display means 100 and other parts. You may display.

  Then, when a start key (not shown) provided on the upper surface operation unit 61 is pressed, heating is started at a predetermined temperature, and the bread / fermentation operation is being performed (S4). After the fermentation operation is completed (the fermentation time is counted from the time when the start key is pressed by the control program of the energization control circuit 200), the fact that the time has passed is displayed on the integrated display means 100. Or, it is notified by a synthesized voice by a buzzer or a voice guide mechanism.

  Then, when the bread dedicated key 250 is pressed once, the pan / baking mode (S5) is entered, and the cooking container 80 is heated from above and below by the heaters 22 and 23 in the grill heating chamber 9 at a predetermined temperature. It is started and is in a baking / baking operation (S6).

  There are two baking operation times: a case where it is automatically determined by the control program of the energization control circuit 200 and a case where the user arbitrarily sets it. The setting of the baking time automatically is determined by the user automatically selecting the amount of bread dough and the amount of baking, which is automatically calculated by the control program of the energization control circuit 200, or stored in a pre-stored time table. It is selected from the numeric values.

  When the baking operation (S6) is finished after a predetermined baking time has elapsed, the completion is displayed on the integrated display means 100 by the control program of the energization control circuit 200, or is notified by a synthesized sound by a buzzer or a voice guide mechanism. . Therefore, when the user does not continue baking, when the user presses the stop key provided in the upper surface operation unit 61, the power supply activation state (S2) is restored.

(Bread fermentation cooking using cooking vessel 80)
Next, the case of performing only the fermentation of bread dough will be described with reference to FIG.
In a state where the cooking container 80 containing the dough is placed in the grill heating chamber 9, the power supply is activated as described above, and the bread dedicated key 250 provided on the upper surface operation unit 61 is pressed once to make the bread / fermentation mode. (S1) is started. When the bread fermentation operation is started (S11), the energization control circuit 200 first (when the previous cooking was cooked using ingredients that generate a strong odor when heated, such as grilled fish, for example, grilled blue fish such as sword fish) ) A self-clean process is executed (S12). In this self-cleaning process, the heater driving circuit 214 operates to turn on a heater (not shown) for heating the catalyst 121 for a predetermined time and heat the catalyst until it reaches a high temperature.

  Further, the radiant electric heating sources 22 and 23 in the grill heating chamber 9 are also energized with a predetermined power by the operation of the heater driving circuits 212 and 213. By these heating operations, cooking residue attached to the inner wall surface of the grill heating chamber 9 and the catalyst 121 generated during the previous cooking is burned out, and the generated smoke is purified and discharged by the purification action of the catalyst 121 which is a smoke removal filter. To do. For this reason, it is possible to prevent the odor remaining from the cooking time of fish or meat that hinders the fragrance of bread during the previous cooking from attaching to the bread dough. In the self-cleaning process, only the heater (not shown) for heating the catalyst 121 may be energized. In addition, when such a purification process by heating is performed manually or automatically at the end of cooking, the self-cleaning process can be dispensed with when making bread.

  When the self-cleaning process is completed, the energization control circuit 200 performs temperature control for fermenting the bread (S13). As the temperature for fermenting bread, a predetermined value suitable for fermentation is set in advance. In the temperature control for fermentation (S13), the energization control circuit 200 acquires temperature measurement data in the grill heating chamber 9 sent from the temperature sensor 242 via the temperature detection circuit 240. In the first embodiment, the bread is accommodated in the cooking container 80, and the temperature in the cooking container 80 is different from the temperature in the grill heating chamber 9. Therefore, it is necessary to control the temperature in the cooking vessel 80 to a temperature suitable for fermentation. Therefore, the energization control circuit 200 estimates the temperature in the cooking vessel 80 based on the detected temperature in the grill heating chamber 9 by a predetermined process, and the temperature inside the closed space 87 of the cooking vessel 80 is a temperature suitable for fermentation. The upper heater 22 and the lower radiation type electric heating source 23 are controlled to be heated. By doing in this way, even when bread dough is put into the cooking vessel 80 and fermented, it can be fermented at an appropriate fermentation temperature.

  And when the predetermined time which the user preset as fermentation time passes (S4), fermentation operation will be complete | finished (S5). By the fermentation, the bread dough swells, but since the bread dough is accommodated in the lower container 82 and the upper container 81 serving as a lid is covered, the bread dough does not contact the upper heater 22. Further, since the upper container 81 has a certain weight that does not easily move even when the bread dough bulges, the upper container 81 is not displaced by fermentation of the bread dough, so that the bread dough does not protrude from the cooking container 80. In addition, if the lower container 82 and the upper container 81 are aligned by the ridges 84 and 86 so as not to be shifted laterally by protrusions or the like as described above, the fermentation can be completed more reliably while the bread dough is accommodated. .

  When the energization control circuit 200 estimates the temperature in the cooking vessel 80 based on the temperature information detected by the temperature sensor 242, and controls the heating temperature of the upper and lower heaters 22 and 23, the operating condition of the heater is The energization amount, energization pattern (continuous energization, intermittent energization, etc.), etc. may be combined appropriately.

(Cooking other than baking using cooking container 80)
Next, the example in the case of using the cooking container 80 which concerns on this Embodiment 1 for heat cooking other than bread making is demonstrated.
Heat cooking can be performed by putting ingredients other than bread in the lower container 82 of the cooking container 80. In this case, the energization control circuit 200 estimates the temperature in the cooking container 80 based on the temperature output from the temperature sensor 242, and the upper heater 22 and the lower radiation so that the cooking container 80 has a temperature suitable for cooking. The operating conditions of the electric heating source 23 are controlled.

  The lower container 82 can be used alone with the upper container 81 normally functioning as a lid removed. For example, when heating a food material with a small thickness, such as pizza or toast, the food material can be put in the lower container 82 and accommodated in the grill heating chamber 9 for cooking.

  In addition, the upper container 81 can be used as a shallow baking dish by being turned over (inverted upside down) and placed on the grill 109 with the opening facing upward. For example, when the capacity of the cooked product such as gratin or paella is large, the lower container 82 is used as a deep dish as it is, and when the capacity is small, the upper container 81 is turned over to be used appropriately. Cooking can be done. Since both the upper container 81 and the lower container 82 are provided with handles 84 and 86 that can be securely grasped by the user, handling is easy.

  As described above, according to the first embodiment, since the cooking container 80 having the lower container 82 and the upper container 81 is provided, even when the food is inflated by cooking such as bread making, the swelling of the food 81, and the food material does not contact the upper heater 22. In addition, since the upper container 81 is formed with a predetermined weight that does not move even when the bread bulges, the upper container 81 does not easily shift upward or laterally even if the bread swells. It does not protrude from the cooking container 80. Thereby, even if it is a foodstuff which swells by heat cooking, it can cook appropriately.

  Further, the lower container 82 is configured to have a height dimension (depth) larger than that of the upper container 81, and either one of the lower container 82 and the upper container 81 is changed depending on the amount of food to be cooked. It can also be used below. Thereby, the breadth of cooking can be expanded. In addition, since the upper container 81 and the lower container 82 are provided with the collar portions 84 and 86 that function as handles that can be carried individually, they are easy to grip when used and transported, and are convenient to handle. Can be improved.

(Operation example 1 of combined cooking)
Next, the operation in the case of performing “composite heating cooking” using the cooking container 80 will be described. Although it has been described that the cooking container 80 can perform various types of cooking including bread, paella, and fruit tart, an operation when hamburger steak is performed as an example of combined cooking will be described.

Before the explanation, a procedure for making a hamburger steak using a frying pan in a conventional induction heating cooker will be described. The process until making the hamburger dough is omitted.
(1) Heat butter and salad oil in a frying pan and heat them by induction (heating power is medium heat).
(2) If the hamburger is firmly burnt, turn it over, lower the heater power to a medium heat, cover and bake for 7-8 minutes.
(3) Take out the hamburger, put it on the tableware, drain the frying pan used, lightly boil red wine, demiglace sauce and bouillon, season with butter, salt and pepper.
(4) Attached to the hamburger on the tableware with fried potatoes and watercress etc.

  Temporarily, the process up to the “burning” step (2) described above is performed by induction heating, and then the hamburger is transferred to the grill heating chamber 9 so that the grill heating chamber 9 passes the fire to the center of the hamburger. This is possible with the induction heating cooker, but the user controls each heating source, and the two heating sources cannot have any mechanical, physical relationship or linkage. Because it was not, it was not satisfactory as combined cooking.

In contrast, in the first embodiment of the present invention, the following combined cooking can be performed.
That is, a hamburger is put in the lower container 82 in the cooking container 80, and this lower container is placed on the top plate 21 which is the heating area of the right IH heating source 6R.

  Here, before the heating by the right IH heating source 6R is started, the combined cooking key 251 is selected by pressing the combined cooking key 251 as shown in FIG. 14 (S21).

  Then, the energization control circuit 200 explains to the user the basic operation when performing “combined heating cooking”. Specifically, an explanatory note is displayed in the guide area 100GD of the integrated display means 100. In combination with this display, the same content may be notified by voice by the voice guide function (S22).

  Further, since the right IH heating source 6R is set in advance in the control program of the energization control circuit 200 and the heat source in the case of combined heating cooking, the heating power and time are displayed as default values in the display areas 100R1 and 100R2. Note that the user can change the heating power and time displayed as default values.

  Moreover, since the cooking menus other than the hamburger are also displayed in the guide area 100G of the integrated display means 100, the target cooking menu is selected and heating cooking is started (S23).

  Note that the cooking container 80 (the lower container 82 and the upper container 81) is not a pot that is not suitable for the right IH heating source 6R. However, if the bottom surface of the cooking container 80 is not deformed and flattened, there is a possibility that correct temperature detection and control operation cannot be performed, so the pan detection step is executed as a precaution (see FIG. 14). Not shown).

Simultaneously with the start of the IH heating, the energization control circuit 200 commands an operation of “reserved heating” for performing the subsequent electric radiant heat heating in “combined cooking” (S24). Specifically, energization of the radiant electric heating sources 22 and 23 inside the grill heating chamber 9 is started and a preheating operation is started. That is, when the set temperature is higher than the predetermined value, it takes time to raise the ambient temperature from the start of energization to the target set temperature, so energization is started in advance.
In the first embodiment, the radiant electric heating source 22 near the top ceiling of the grill heating chamber 9 has a maximum power consumption (maximum heating power) of 1200 W, and the radiant electric heating source 23 near the bottom of the grill heating chamber 9 has a maximum power consumption of 800 W. Therefore, the total heating of 2 kW may be performed from the start of preheating, but the energization control circuit 200 knows in advance that it takes several minutes or more for the process of initially scoring the surface of the hamburger by induction heating. If the temperature is higher than a predetermined temperature (for example, the internal detection temperature of the grill heating chamber 9 is 250 ° C.) within the time when the power is applied, the maximum power is not supplied. In addition, since there is a limit on the power used simultaneously with induction heating cooking (the energization control circuit 200 performs so-called demand control on the power of the entire cooking device), the grill heating chamber 9 is actually a total of the radiant electric heating sources 22 and 23. The heating is started with a heating power of about 1.5 kW.

  When the user determines that a desired burn can be applied to the surface of the hamburger by IH heating, the user puts the lower container 82 containing the hamburger into the grill heating chamber 9 as it is. In this case, it is desirable to cover with the upper container 81.

  When the user puts the cooking container 80 into the grill heating chamber 9 and presses the operation button 95 for the radiation electric heating sources 22 and 23 to instruct the start of heating, the heating cooker starts grill heating cooking (S25). ).

  The energization control circuit 200 receives information from the temperature sensor 242 and the temperature detection circuit 240, and radiates electric power so that the internal atmosphere temperature of the grill heating chamber 9 becomes a target temperature set in advance by the energization control circuit 200. The energization of the heating sources 22 and 23 is controlled, and when a predetermined time has elapsed from the start of cooking, this is notified (display by the integrated display means 100 or notification by the voice guide mechanism), and cooking is terminated (S27).

  In this way, combined heating cooking by IH heating and electric radiation heating can be carried out in the present invention. However, as described above, when IH heating is performed in the former stage and radiation electric heating is performed in the latter stage, radiation electric cooking in the subsequent stage is performed. In parallel with the step of first scorching the surface of the hamburger by IH heating, a preheating operation of the grill heating chamber 9 is also started by the energization control circuit 200 so that the start-up of the grill heating chamber 9 can be performed quickly. At the stage where the cooking container 80 is carried into the grill heating chamber 9, the atmospheric temperature in the grill heating chamber 9 has already risen, so that the temperature rise of the grill heating chamber 9 that takes time to increase in temperature is accelerated as compared with IH heating. Electric radiation heating cooking can be started. For this reason, the cooking time of the whole cooking can be shortened.

  In particular, the fact that the merit of “speedy cooking”, which is the greatest feature of IH heating, can contribute to improvement of convenience in combination with widening the range of cooking.

  It is also possible to make a hamburger sauce with the left and right IH heating sources 6R and 6L using a normal frying pan while the hamburger is slowly heated by the grill heating chamber 9, as in the conventional case. There is no need to remove the hamburger fat from the frying pan by sucking it with kitchen paper.

  In the above description, the operation of “reserved heating” is commanded (S24) in preparation for performing the subsequent electric radiant heat heating (S24) simultaneously with the step of starting induction heating (S23). It is also possible to start the reserved heating operation to the radiant electric heating sources 22 and 23 inside the grill heating chamber 9 within a predetermined time from the start of. For example, when the induction heating operation at the front stage requires a predetermined time (for example, 5 minutes), while the preheating at the rear stage may be shorter than the heating time at the front stage (for example, 3 minutes), the energization control circuit 200 The preheating start time is delayed as long as preheating can be completed at the end of heating in the previous stage. In this example, the preheating operation is started within a maximum of 2 minutes from the start of induction heating. By doing in this way, since preheating is completed at the end of induction heating, it is possible to shift to radiant electric heating in the grill heating chamber 9 immediately after the induction heating is completed. Moreover, since a useless preheating operation is not performed, it contributes to energy saving.

(Operation example 2 of combined cooking)
Next, the operation when the grill heating chamber 9 is first used in “composite cooking” using the cooking container 80 will be described.
First, before starting heating by the grill heating chamber 9, the user presses the composite cooking key 251 to instruct the cooking device to execute the composite heating.

  Then, the energization control circuit 200 explains to the user the basic operation when performing “combined heating cooking”. Specifically, an explanatory note is displayed in the guide area 100GD of the integrated display means 100. In combination with this display, the same content may be notified by voice by the voice guide function (S22).

  In the cooking display area 100G by the radiant electric heating sources 22 and 23 of the grill heating chamber 9, the heating power and time are displayed as default values. Note that the user can change the heating power and time displayed as default values.

  The user sets the cooking container 80 (the lower container 82 or the upper container 81) inside the grill heating chamber 9, and selects the desired cooking menu from the cooking menus that can be cooked in the grill heating chamber 9 displayed in the guide area 100GD. select.

Then, the heating cooker starts electric radiation heating with the heating power determined in the selected cooking menu.
Simultaneously with the start of the electric radiation heating, the energization control circuit 200 commands the preparation for performing the subsequent IH heating in the “combined cooking”. Specifically, various control parameters (heating power, energization time, etc.) for IH heating are permitted to be set in a reserved state in advance.
For this reason, the user operates various input keys 141 to 145 of the integrated display means 100 and various other thermal power keys 91 to 94 to set the operating conditions of the IH heating sources 6R and 6L for performing IH heating. Can do.

  When the electric radiation heating is completed, the user carries out the lower container 82 containing the ingredients from the grill heating chamber 9 and puts it on the top plate 21 as it is. At this time, since the position where the lower container 82 is placed is preferably within a predetermined heating area of the right IH heating source 6R, the lower container 82 may be placed using the guide mark 6RM as a guide. When heating with the right IH heating source 6R, the upper container 81 may be left covered, but after the heating in the grill heating chamber 9 is finished, the cooking container 80 is at a high temperature. Thus, the upper container 81 may be removed in order to confirm the change of the food material in real time.

Then, after placing the cooking container 80 above the right IH heating source 6R, IH heating cooking is started.
Note that the cooking container 80 (the lower container 82 and the upper container 81) is dedicated to the heating cooker and is not a pot of material, size, etc. that is not suitable for the right IH heating source 6R. The “appropriateness detection” operation can be omitted, and the process can be quickly shifted to IH heating. Of course, it is good also as starting IH heating after performing the pan suitability detection operation just in case.

  In this way, when electric radiation heating is performed in the previous stage and then cooking is continuously performed using an IH heating source, the energization control circuit 200 accepts a reservation operation for IH heating during the electric radiation heating in the previous stage. For this reason, the IH heating cooking in the latter stage can be quickly started up, and the entire cooking time can be shortened. In particular, the fact that the merit of “speedy cooking”, which is the greatest feature of IH heating, can contribute to improvement of convenience in combination with widening the range of cooking.

  Even when the upper container 81 is turned upside down and used as a container instead of a lid and heated by IH or electric radiation, cooking can be performed basically in the same manner as the above-described cooking. Further, in the combined cooking, in the previous stage, the upper container 81 can be used as a container with the lower side down, and the upper container 81 can be placed downside down and used as a container for cooking.

In addition, although the content of the cooking preparation operation | movement performed at any timing before the heating cooking in the front | former stage and during a heating cooking changes with cooking contents performed by combined heating cooking, there exist the following, for example.
(1) Acceptance of input of setting conditions for cooking at the later stage (reservation function)
This enables the heating power and energization time of the heating source used in the subsequent stage to be set at any timing before the start of cooking in the preceding stage and during cooking. By making it possible to reserve the heating conditions in the subsequent stage, the heating in the subsequent stage can be started immediately after the heating in the previous stage is completed, and therefore the time from the start to the end of the combined cooking can be shortened.
(2) Preheating of the heating source used in the latter stage This is for example to cause the radiant electric heating source used in the latter stage to start the preheating operation at any timing before starting cooking in the former stage or during cooking. It is. Although it may take time until the ambient temperature in the grill heating chamber using the radiant electric heating source rises, heating in the subsequent stage can be started immediately after the heating in the previous stage is completed by performing a preheating operation. . For this reason, the time from the start to the end of the combined cooking can be shortened.
(3) Self-cleaning in the grill heating chamber 9 This is for deodorizing and desmokinging in the grill heating chamber 9 used in the subsequent stage at any timing before the start of heating cooking in the previous stage and during cooking. is there. For example, if the fish was previously baked in the grill heating chamber 9, the next time the bread is baked in the grill heating chamber 9, the generation of odors and smoke is a concern. For this reason, as a cooking preparation operation, the radiant electric heating sources 22 and 23 in the grill heating chamber 9 are energized for a predetermined time to burn out the cooking residue in the grill heating chamber 9 and the heating for the catalyst 121 which is a smoke removal filter. The power source (not shown) is energized to smoke and deodorize. By doing in this way, it can suppress that the odor and smoke which remained by the last cooking adhere to a new to-be-cooked thing.

[Display of integrated display means during combined cooking]
(Screen structure of integrated display means)
Next, the transition of the display screen of the integrated display means 100 when performing “combined cooking” will be described. The liquid crystal screen used in the integrated display means 100 is a known dot matrix type liquid crystal screen. Further, high-definition display can be realized, and a large number of characters can be displayed even when characters are displayed. As described above, the screen area for displaying information is divided into a plurality for each heating source, and the screen is assigned to each of the following areas.

Specifically, the liquid crystal screen of the integrated display means 100 is divided and used as follows.
(1) The corresponding area 100L of the left IH heating source 6L.
(2) Corresponding area 100M of the central heating source 7.
(3) Corresponding area 100R of right IH heating source 6R.
(4) The cooking display area 100G of the grill heating chamber 9.
(5) A guide area 100GD that informs the user when abnormal driving is detected or improper operation is used.
(6) A key display area 100F for displaying six independent input keys 141, 142, 143, 144, 145, and 146 having a function of directly inputting various cooking conditions and the like.
(7) Optional display area 100N (not shown in FIGS. 15 to 18).

(Display example 1 of integrated display means)
Next, the operation when “IH heating cooking” is first performed in “composite heating cooking” using the cooking container 80 and then the grill heating chamber 9 is used will be described. In addition, it demonstrates on the assumption that only the right IH heating source 6R can be used as IH cooking.

First, the user instructs to perform combined heating by pressing the combined cooking key 251.
Then, the energization control circuit 200 explains to the user the basic operation when performing “combined cooking”.
FIG. 15 shows a display screen for setting the combined cooking in the integrated display means 100. As shown in FIG. 15, an explanatory note such as “Please select the heat source to be used first” is displayed in the guide area 100GD of the display screen of the integrated display means 100. In addition to the display of the explanatory note, the user may be notified by voice using the attached voice guide function.

  Further, the area of the display area 100R (100R1, 100R2) of the right IH heating source 6R is greatly enlarged as shown in FIG. 15 from the area in the default state (see FIG. 9). That is, in the default state, the area is equivalent to the display area 100M of the central heating source 7 and the display area 100L of the left IH heating source 6L, but it is enlarged twice or more. Thus, by enlarging the display area, more information can be displayed in an easy-to-see manner.

As shown in FIG. 15, the characters “Right IH combined heating” are displayed in the display area 100 </ b> R, and below it, “Use first”, “Use after grill”, and “Select from menu” are displayed in the horizontal direction. Three options are displayed.
At the same time, characters “grill combined heating” are displayed in the cooking display area 100 </ b> G of the grill heating chamber 9.

  “First use” means that the right heating source 6R is used as the first heat source for cooking. “Use after grilling” means that the radiant electric heating sources 22 and 23 of the grill heating chamber 9 are used as the first heat source for cooking, and the right heating source 6R is used thereafter. “Select from menu” means that a specific cooking name (cooking menu), for example, fine choices such as bread making, hamburger, grilled fish, boiled food, etc. are displayed. This is a function for setting the heating source to be used. Such a menu display is automatically performed by the control program of the energization control circuit 200.

  In order to select a desired one from the three options “first use”, “use after grill”, and “select with menu” displayed in the display area 100R, the display is displayed on the frontmost side of the display screen. Of the input keys 141, 142, 143, 144, 145, and 146, the input key 142 with a rightward “→” display or the input key 143 with a leftward “←” display may be pressed. When touching directly above the input keys 141, 142, 143, 144, 145, and 146 displayed in the key display area 100F, an electrostatic capacitance switch installed inside corresponding to the input key portion works, and a predetermined Is input to the energization control circuit 200.

In FIG. 15, each time the input keys 142 and 143 are operated, the “use first”, “use after grill”, and “select by menu” portions are selected and displayed one by one. The selection display can be performed, for example, by increasing the brightness of any display part of “selected first”, “used after grill”, and “selected by menu” in the selected state. In this selection display, the portion in the selected state is moved in order by depressing the input keys 142 and 143 and circulates.
Therefore, for example, when the “first use” portion is in a bright state, the selection can be made by touching the portion of the input key 146 on which “OK” is displayed.

  When “use after grill” displayed in the display area 100R is selected, the characters “used first” are simultaneously displayed in the cooking display area 100G of the grill heating chamber 9.

  When any of “use first”, “use after grill”, and “select with menu” is selected for the right heating source 6R, the display area 100R of the right heating source 6R has input fields such as heating operation time and heating power. Is displayed. For example, as shown in FIG. 16 to be described later, a plus mark is displayed on the input key 144 and a minus mark is displayed on the input key 145. By pressing this key, the set temperature is added or subtracted by 10 degrees or set time. The numerical value can be increased or decreased, for example, by adding or subtracting one by one. When the user inputs various conditions (for example, the set temperature is set to 300 ° C.) and finally presses an input key 146 with a display of determination, the input conditions are input to the energization control circuit 200. It should be noted that the “decision” function is not necessarily performed by the input key 146, and the decision function is given to another input key depending on the scene.

  After setting the heating conditions for the right heating source 6R, the heating setting temperature, the heating (continuous operation) time, etc. are input to the cooking display area 100G of the grill heating chamber 9 so that the conditions for electric radiation heating can be set. An input field is displayed. In addition, when a predetermined food is first selected by the “menu selection”, a preset temperature or heating time that is preset according to the selected food may be displayed.

  In addition, as shown in FIG. 16 to be described later, the cooking display area 100G displaying the cooking conditions of the radiant electric heating sources 22 and 23 that will start the heating operation at the later stage has the name “grill”. A star mark and the word “reservation” are displayed in the vicinity of. Such a mark RM is called a reserved mark, which indicates that some operation is reserved for this heating source.

  As shown in FIG. 15, only the background colors of the heating source display areas 100R1, 100R2, and 100G related to the combined cooking in the display area of the integrated display unit 100 are displayed on the other heating sources. The area (usually white) is different from the colors of 100L and 100M. That is, the display area related to “combined cooking” is displayed in a unified color (for example, yellow or blue) different from the display areas of other heating sources, and the display area related to combined cooking is clarified. In this way, the user is not confused when confirming the cooking conditions for cooking and the progress of cooking. The display of the guide area 100GD may also be a color tone that has a sense of unity with the background colors of the display areas 100R1, 100R2, and 100G of the heating source.

  When the setting of the energization conditions of the radiant electric heating sources 22 and 23 in the grill heating chamber 9, that is, the setting of “reserved heating” is finished, the start button is one of the input keys 141, 142, 143, 144, 145, 146. Since it is displayed at that place, when the portion is pressed, right IH heating is performed first as shown in FIG. In the scene shown in FIG. 16, it can be seen that 3 minutes have already passed in the cooking time of 4 minutes, and the right IH heating is completed in 1 minute. In this example, the induction heating thermal power during cooking is 1 kW.

Next, a screen example of the integrated display unit 100 when complex cooking is started and heating is performed by the right IH heating source 6R in the previous stage will be described. FIG. 16 is a screen example of the integrated display means 100 when the right IH heating source 6R is heated in the previous stage.
In FIG. 16, AM is a heating operation display mark indicating that a heating operation is being performed, and is displayed as if, for example, a red block is lit. CM is a composite cooking mark displayed across the display areas 100R1 and 100R2, has an arrow shape, and the direction of the arrow matches the operation order of the heating source. That is, since the right IH heating source 6R is used in the preceding stage in the example of FIG. 16, the arrow of the composite cooking mark CM is shown downward from the display area 100R of the right IH heating source 6R.

  When heating with the right IH heating source 6R is completed, the composite cooking mark CM repeatedly flashes and prompts the user to set the cooking container 80 (the lower container 82 or the upper container 81) inside the grill heating chamber 9. . At this time, in addition to the flashing of the composite cooking mark CM, display with a voice guide is also performed.

  The user sets the cooking container 80 inside the grill heating chamber 9, closes the door 13, and enters the input keys 141, 142, 143, 144, 145, “start” displayed in the key display area 100 </ b> F, When any one of 146 is touched, the heating cooker starts electric radiation heating.

Next, an example of a screen of the integrated display unit 100 when performing heating by a radiant electric heating source in the subsequent stage in the combined cooking will be described. FIG. 17 is an example of a screen when the integrated display means 100 is heated by a radiant electric heating source at a later stage.
In FIG. 17, the reservation mark RM shown in FIG. 16 is not displayed, and the heating operation display mark AM is displayed in the cooking display area 100 </ b> G of the grill heating chamber 9.
In the cooking display area 100G, the set temperature of the radiant electric heating source and the remaining heating time are displayed.

Next, in the combined cooking, when the radiation type electric heating source using the grill heating chamber 9 is performed in the previous stage and the heating by the right IH heating source 6R is performed in the subsequent stage, a screen example of the integrated display means 100 in the previous stage. explain. FIG. 18 is a screen example when the radiation type electric heating source is used in the previous stage of the integrated display means 100.
As shown in FIG. 18, the energization control circuit 200 displays “first heating” in the cooking display area 100 </ b> G of the grill heating chamber 9 of the integrated display unit 100. The composite cooking mark CM is displayed as an upward arrow in the display area 100R of the right IH heating source 6R, and indicates that heating in the grill heating chamber 9 is performed in the preceding stage.

  During heating in the grill heating chamber 9, a heating operation display mark AM is displayed in the cooking display area 100G of the grill heating chamber 9. At this time, since the grill heating chamber 9 is used in combined cooking, the guide area 100GD is alerted to the user by displaying “Grill heating is not allowed”. .

Thus, the integrated display means 100 displays the setting input screen regarding the heating in the former stage and the latter stage before the start of the combined cooking. For this reason, the user can set an appropriate heating condition according to the cooking content in consideration of heating in the former stage and heating in the latter stage.
Further, a screen relating to the cooking is displayed during the cooking in the former stage, and a screen relating to the cooking is displayed during the cooking in the latter stage. For this reason, the user can grasp | ascertain easily the progress of the cooking in composite heat cooking.

  In the first embodiment, the composite cooking key 251 is provided on the upper surface operation unit 61. However, the composite cooking key 251 is used as a software key on the display screen of the integrated display unit 100, such as the input keys 141 to 146, for example. It may be provided, and the same effect can be obtained.

  In the first embodiment described above, it is assumed that only the blower 30 in the left cooling chamber 8L is operated and the blower 30 in the right cooling chamber 8R is not operated when the left IH heating coil 6LC is in induction heating. However, the use state of the heating cooker (for example, when the left and right IH heating coils 6LC and 6RC are simultaneously driven to perform another cooking until immediately before, or the central heating source 7 and the grill heating chamber 9 are used) Depending on the environment such as the temperature of the upper part chamber 10, the blowers 30 in the left and right cooling chambers 8L and 8R may be operated at the same time. It is not always the same, and one or both may be changed as appropriate according to the state of use of the cooking device.

  The outer dimensions of the left and right cooling units CU do not necessarily have to be the same, and the dimensions of each part of the blower 30, the rotating blade 30F, the motor 300, the fan case 37, and the component case 34 are also cooled (induction heating). Can be changed as appropriate according to the amount of heat generated and the size of the coil, etc., but if the left and right IH heating sources 6R and 6L have the same maximum heating power, the dimensions and specifications of the components of the two cooling units CU are possible. It is desirable to make it as common as possible to reduce production costs and improve assembly.

  Furthermore, the upper and lower partition plates 24R and 24L and the horizontal partition plate 25 are not necessarily required for carrying out the present invention. For example, in addition to covering the outer wall surface of the grill heating chamber 9 with a heat insulating material, a sufficient gap can be secured between the outer wall surface of the grill heating chamber 9 or the temperature of the gap can be kept low (for example, In order to cause natural convection or forced convection of air), the partition plates 24 and 25 and the heat insulating material may be omitted. Further, a heat shield panel may be attached to the side facing the outer wall surface of the grill heating chamber 9 among the outer wall surfaces of the cooling unit CU itself, or a heat insulating film may be formed. If this is done, the facing distance to the outer wall surface of the grill heating chamber 9 can be finalized, and if the horizontal width of the main body A is the same, the horizontal width dimension of the grill heating chamber 9 can be increased accordingly.

  In the first embodiment, the integrated display means 100 includes the left IH heating coil 6LC, the right IH heating coil 6RC, the radiant central electric heating source (heater) 7, and the radiating electric heating sources (heaters) 22 and 23. The operating conditions of the four heat sources can be displayed individually or simultaneously, and the input / output key 141 to the input key 146 can be touch-operated to start / stop the heating operation and input the energization condition setting. . However, the integrated display unit 100 may not have an input function, and the integrated display unit 100 may realize the input function by the operation unit E so that only the display is performed.

  A body part, B top plate part, C casing part, D heating means, E operation means, F control means, G display means, AM heating operation display mark, CU cooling unit, CM composite cooking mark, KT kitchen furniture, K1 Installation port, KTK opening, N heated object, RM reservation mark, 2 body case, 2A body, 2B flange plate, 2S inclined part, 2U body rear wall, 3B rear flange, 3L left flange, 3R right flange, 6E IH heating coil outermost end, 6L left IH heating source, 6LC left IH heating coil, 6LM guide mark, 6R right IH heating source, 6RC right IH heating coil, 6RM guide mark, 6S internal space, 7 radiation center Electric heating source (heater), 7M guide mark, 8L left cooling chamber, 8R right cooling chamber, 9 grill heating chamber, 9A front opening, 9B rear Opening, 9C inner frame, 9D outer frame, 9E exhaust port, 10 upper parts chamber, 12 rear exhaust chamber, 13 door, 13A central opening, 13B handle, 14 exhaust duct, 14A upper end opening, 14B bottom, 20 upper frame (Frame), 20B Right vent, 20C Central vent, 20D Left vent, 21 Top plate, 22 Radiation type electric heating source (heater), 23 Radiation type electric heating source (heater), 24A Notch, 24L Left upper / lower partition plate, 24R Right upper / lower partition plate, 25 Horizontal partition plate, 26 Air gap, 28 Rear partition plate, 28A Exhaust port, 30 Blower, 30F Wing, 31R Infrared sensor, 31L Infrared sensor, 32 Rotating shaft, 33 Control circuit section, 34 parts case, 34A first exhaust port, 34B second exhaust port, 37 fan case, 37A suction Tube, 37B Suction port, 37C Exhaust port (exit), 37D case, 37E case, 39 Blower chamber, 41 Circuit board, 42 Cooling duct, 42A Upper case, 42B Lower case, 42C Blowout hole, 42D Partition wall, 42E Partition Wall, 42F Ventilation space, 42G Ventilation space, 42H Ventilation space, 42J Communication port (hole), 42K Ventilation port, 43A Heat radiation fin, 43B Heat radiation fin, 45R Liquid crystal display screen, 45L Liquid crystal display screen, 46 Component case, 50 Container shape Cover, 60 Front operation section, 61 Top operation section, 63 Main power switch, 63A Operation button, 64R Right operation dial, 64L Left operation dial, 66R Right display lamp, 66L Left display lamp, 70 Right heating power setting operation section, 71 Left heating power setting operation unit, 72 central operation unit, 80 cooking container, 81 Upper container, 82 Lower container, 83 Upper container ceiling surface, 84 collar, 85 Bottom of bottom container, 86 collar, 87 Closed space, 90 One-touch setting key, 91 Low thermal power key, 92 Medium thermal power key, 93 High heat key, 94 High heat key, 95 Operation button for heaters 22 and 23, 96 Stop operation switch operation button, 97A Temperature control switch operation button, 97B Temperature control switch operation button, 98 Power on / off Switch button, 99A setting switch, 99B setting switch, 100 integrated display means, 100L right IH heating source corresponding area, 100L1 thermal power display area, 100L2 time display area, 100M central heating source 7 corresponding area, 100M1 thermal power display Area, 100M2 time display area, 100R1 right IH heating source 6R Corresponding area, corresponding area of 100R2 right IH heating source, cooking area of 100G grill heating chamber 9, 100GD guide area, 100F key display area, 100N optional display area, 101R right heating power display lamp, 101L left heating power display lamp, 106 blower , 106A Rotor blade, 106B Motor for driving fan, 108 Sauce pan, 109 Burning net, 116 Air gap, 121 Deodorizing catalyst, 130 Convenient menu key, 131R Right IH convenient menu button, 141 input key, 142 input key, 143 input key 144 input key, 145 input key, 146 input key, 200 energization control circuit, 201 input unit, 202 output unit, 203 storage unit, 204 arithmetic control unit, 210R inverter circuit of right IH heating source, 210L of left IH heating source Invar Circuit, 211 heater driving circuit for central heating source, 212 heater driving circuit for driving heater for heating in grill heating chamber, 213 heater driving circuit for driving radiant electric heating source 23 in grill heating chamber, 214 of deodorizing catalyst 121 Driving heater driving circuit, 215 Liquid crystal screen driving circuit of integrated display means 100, 221 rectifier bridge circuit, 222 coil, 223 smoothing capacitor, 224 resonance capacitor, 225 switching means (IGBT), 226 flywheel diode, 227 Current detection Sensor, 228 Drive circuit, 231 Drive circuit, 240 Temperature detection circuit, 241 Temperature detection element (temperature sensor), 242 Temperature detection element (temperature sensor), 243 Temperature detection element (temperature sensor), 244 Temperature detection element (temperature sensor) 245 temperature Detecting element (temperature sensor), 250 Pan dedicated keys, 251 The cooking key 300 driving motor.

Claims (3)

A first heating source and a second heating source capable of independently setting energization conditions;
An input unit for setting energization conditions of the first heating source and the second heating source;
Energization control means for controlling energization of the first heating source and the second heating source in accordance with an input from the input unit;
Display means for displaying operating states of the first heating source and the second heating source,
The first heating source is an electromagnetic induction heating source, and is installed below the top plate that constitutes the top surface of the main body of the heating cooker, and a container that accommodates the food to be placed on the top surface of the top plate. Is to heat
The second heating source is a radiant electric heating source, and heats the container accommodated in a heating chamber defined in the body.
When the input unit is configured to perform combined cooking that performs cooking by the second heating source subsequent to cooking by the first heating source, the energization control unit performs cooking by the first heating source. After the start , cooking of the second heating source is delayed from the start of cooking by the first heating source so that the cooking preparation operation of the second heating source is completed by the end of heating by the first heating source. A cooking device characterized by starting a preparation operation. A first heating source and a second heating source capable of independently setting energization conditions;
An input unit for setting energization conditions of the first heating source and the second heating source;
Energization control means for controlling energization of the first heating source and the second heating source in accordance with an input from the input unit;
Display means for displaying operating states of the first heating source and the second heating source,
The first heating source is a radiant electric heating source, and heats a container that accommodates an object to be heated that is accommodated in a heating chamber that is partitioned in the main body of the heating cooker.
The second heating source is an electromagnetic induction heating source, is installed below the top plate constituting the top surface of the main body, and heats the container placed on the top surface of the top plate,
When the input unit is configured to perform combined cooking that performs cooking by the second heating source subsequent to cooking by the first heating source, the energization control unit performs cooking by the first heating source. After the start , cooking of the second heating source is delayed from the start of cooking by the first heating source so that the cooking preparation operation of the second heating source is completed by the end of heating by the first heating source. A cooking device characterized by starting a preparation operation. Display means for displaying operating conditions of the first heating source and the second heating source;
In the cooking preparation operation,
The energization control means determines an operating condition of the second heating source,
The cooking device according to claim 1 or 2 , wherein the display means displays an operating condition of the second heating source determined by the energization control means.

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