WO2021149287A1

WO2021149287A1 - Thermal cooker

Info

Publication number: WO2021149287A1
Application number: PCT/JP2020/030974
Authority: WO
Inventors: 成一平岩; 淳公平; 裕希菅野; 智美高嶋; 紀之大都; 恵安島; 悠介齊藤; 高田　秀樹
Original assignee: 日立グローバルライフソリューションズ株式会社
Priority date: 2020-01-24
Filing date: 2020-08-17
Publication date: 2021-07-29
Also published as: JP2021116954A

Abstract

The purpose of the present invention is to make it possible, by reducing the number of accessories of a thermal cooker, to save storage space for the accessories and to increase heating efficiency. To accomplish the foregoing, the present invention is provided with: a heating chamber 7; a table 70 formed from a ceramic material so that an item to be heated can be placed thereon; a magnetron 20 that is linked to the heating chamber 7 via a waveguide 50; a grill heater 10 that heats the item to be heated; a lower heater 11 disposed below the grill heater 10; and a retaining shelf 74 disposed on a side surface section of the heating chamber 7. Due to this configuration: when the item to be heated is microwave-heated by the magnetron 20, the table 70 is retained at a prescribed position; and when the item to be heated is heated by the grill heater 10, the table 70 can be moved above the prescribed position and retained by the retaining shelf 74.

Description

Cooker

The present invention relates to a cooking device, and more particularly to a cooking device in which a table on which food is placed during cooking is preferably configured.

In the microwave oven, food is placed on the table in the heating chamber and cooked. Some of the tables rotate in a circular shape and some are fixed to the bottom. From the viewpoint of usability, the latter turntable The less type is the mainstream.

In this latter turntableless type, there is a type in which food information for automatically adjusting the microwave heating amount is performed by an infrared sensor provided on the outside of the upper wall surface of the heating chamber (Patent Document 1), and the former In the case where the table rotates in a circular shape, there are those in which food information is performed by both a weight sensor and an infrared sensor (Patent Document 2) (Patent Document 3).

JP-A-2002-372244 Japanese Unexamined Patent Publication No. 2002-81653 Japanese Unexamined Patent Publication No. 2006-2988

In general, cooking methods for microwave ovens include grill heating and oven heating, which are heated by a heater provided on the wall surface of the heating chamber, in addition to microwave heating, and a cooking dish with high heat resistance such as hollow or ceramic is used for heating the heater. It is provided separately and is used properly according to the cooking method.

Further, in the turntableless type heating cooker shown in Patent Document 1, since the table on the bottom of the heating chamber cannot be attached and detached, it cannot be soaked and washed in the kitchen sink, and it is difficult to remove dirt, and cleaning is possible. Bad sex.

Further, in the heating cooker shown in Patent Document 2 and Patent Document 3, since a hollow or ceramic square cooking dish is separately provided as an accessory for oven heating, this square cooking dish is not used for cooking. Sometimes there is no place to put it, storage space is required in the kitchen, and it is not easy to use.

Further, when not only the upper heater but also the lower heater is provided in the heating chamber to heat the object to be heated from both the upper and lower sides, the efficiency of transferring the heat from the lower heater to the object to be heated is particularly low. ..

The present invention has been made to solve the above problems.

In order to solve the above problems, in the present invention, a heating chamber, a table made of a ceramic material on which an object to be heated is placed, a magnetron connected to the heating chamber via a waveguide, and the above-mentioned It has an upper heater for heating the object to be heated, a lower heater provided below the upper heater, and a holding shelf arranged on the side surface of the heating chamber, and the magnetron heats the object to be heated by microwave. At that time, the table was held at a predetermined position, and when the object to be heated was heated by the heater, the table was moved above the predetermined position and held on the holding shelf.

According to the present invention, the number of accessories of the cooking cooker can be reduced to save the storage space for the accessories, and the heating efficiency can be improved.

It is a side sectional view at the time of microwave heating of one Example of the heating cooker of this invention. It is a front sectional view at the time of microwave heating of the same Example. It is a side sectional view at the time of oven heating of the same Example. It is a side sectional view at the time of oven heating of another Example of the heating cooker of this invention. It is a front surface, a back surface and a front view of a table.

1 and 2 show an embodiment of the heating cooker of the present invention, and are a side sectional view and a front sectional view of a configuration in which food is cooked by microwave heating in a heating chamber.

In this embodiment, as an example of a heating cooker, a turntableless microwave oven in which a table having a size close to the bottom surface of the heating chamber and having substantially the same shape is arranged will be described.

In the figure, inside the cabinet 51, a heating chamber 7 for storing food through a heat insulating material 54 and performing cooking is provided, and on the front surface of the heating chamber 7, an openable door portion 52 capable of taking in and out food is provided. It is rotatably provided.

Further, an antenna 57 and an antenna motor 22 for rotating the antenna 57 are provided below the bottom surface of the heating chamber 7 and below the substantially center of the table 70, and a weight sensor 6 is located below the outer periphery of the table 70. Multiple are arranged.

The table 70 is made of mullite cozy light-based ceramic that has excellent heat resistance and transmits high frequencies, and has a substantially quadrangular shape so as to substantially coincide with the bottom surface of the heating chamber 7.

Here, as long as it is a ceramic that transmits high frequencies, it can be applied to other than mullite cordierite type.

The table 70 is black, and by not using carbon for coloring, the microwave loss can be suppressed as much as possible and the heating efficiency can be made the same as the current one.

Further, the antenna 57 is housed in a recess provided near the bottom surface of the heating chamber 7 and a protective plate 78 provided so as to close the recess, and the antenna 57 is in a state where the table 70 is not arranged on the bottom surface. It is not visible.

Here, if the protective plate 78 is a material having high magnetic permeability to microwaves such as a mica plate, the electromagnetic wave distribution that changes depending on the shape and rotation speed of the antenna 57 is transmitted to the heating chamber 7 with a minute attenuation. be able to.

The weight sensor 6 is provided on the outer peripheral side of the table 70 in order to accurately detect the weight of the table 70 and the food placed on the table 70 regardless of the placement position on the table 70.

The weight sensor 6 may detect the capacitance that changes with the deformation of the metal spring, or may detect the amount of strain.

Further, the number of weight sensors 6 may be three in order to stably hold the substantially quadrangular table 70, and all three weight sensors 6 are always in contact with the table 70 and placed on the table 70. Accurately detect the weight of the food to be served.

Further, an operation panel (not shown) for setting cooking is provided on the side surface of the door portion 52, and the object to be heated is placed in the machine room 2 arranged on the right side of the heating chamber 7 behind the operation panel. Parts necessary for microwave heating, for example, a magnetron 20, a power supply coil 21, a control board 27, a cooling fan 24, and the like are provided.

The control board 27 is equipped with a microcomputer 28 that controls a magnetron 20 and the like.

The magnetron 20 is connected to a protective plate 78 located in the center of the bottom surface of the heating chamber 7 via a waveguide 50, and microwave energy radiated from the magnetron 20 is radiated from the protective plate 78 into the heating chamber 7. NS.

On the left and right sides of the inner wall of the heating chamber 7, holding shelves 74 projecting inward substantially in parallel with the bottom surface are provided in the upper and lower two

stages

74a and 74b. It is configured so that it can be arranged according to.

The holding shelf 74a and the holding shelf 74b are formed so as to project from the side surface of the heating chamber 7. Further, the protruding portion is continuously formed from the front side to the rear side.

The distance from the protective plate 78 to the holding shelf 74a is slightly longer than the distance of two-thirds of the distance from the protective plate 78 to the top surface of the heating chamber 7.

The distance from the protective plate 78 to the holding shelf 74b is slightly shorter than the distance of one-third of the distance from the protective plate 78 to the top surface of the heating chamber 7.

In FIG. 5, as shown in FIG. 5A, the table 70 has edge portions 70f formed on the right side and the left side. The portion of the edge portion 70f shown in FIG. 5C up to the step portion 70g is configured to engage with the holding shelf 74a and the holding shelf 74b.

Here, the holding shelves 74 may be arranged in three or more stages on the side surface of the heating chamber 7, and the holding shelves 74 to be used may be adjusted according to the cooking menu.

In this embodiment, a flat grill heater 10 is provided on substantially the entire upper surface of the heating chamber 7, and a lower heater 11 is provided on the lower side of the heating chamber 7. Can be cooked in the oven.

FIG. 3 shows a side sectional view of an example of cooking configuration by heating with a heater.

In FIG. 3, the table 70 arranged on the bottom surface of the heating chamber 7 at the time of microwave heating in FIG. 1 is arranged on the holding shelf 74b, and the oven is heated from both the upper and lower sides of the table 70 by the radiant heat from the grill heater 10 and the lower heater 11. Can be done.

That is, the table 70 arranged on the bottom surface of the heating chamber 7 is taken out through the door portion 52, then moved, and engaged with the holding shelf 74b (holding shelf 74a) via the door portion 52. Fit in like.

In this way, by using the table 70 in combination regardless of the cooking method, it is not necessary to prepare different cooking dishes for each cooking, and the usability is improved.

Also, by reducing the number of accessories in the cooker, it is not necessary to prepare a storage space for accessories in the kitchen, and the kitchen environment can be used widely and comfortably.

The table 70 has a configuration in which an edge portion 70f is provided on the outer periphery so that the table 70 is easily arranged on the holding shelf 74 and does not fall off.

Further, when the table 70 is attached / detached in FIG. 1, the edge portion 70f is easily caught by the finger, and the lower side 77 of the food input port is configured to have substantially the same height as the bottom surface of the edge portion 70f of the table 70, so that the appearance is aesthetically pleasing. It will be a flat interior with small irregularities.

Further, since the table 70 can be removed, in the oven heating, the heat from the lower heater 11 installed on the bottom surface of the heating chamber 7 is directly transferred to the heating chamber 7, so that the temperature rise speed of the heating chamber 7 is accelerated and the temperature rise speed of the heating chamber 7 is accelerated. It is possible to perform highly energy-saving cooking with little heat leakage to the outside.

Here, the table 70 is made of cozy light-based ceramic, that is, it has an extremely low coefficient of thermal expansion, excellent thermal shock resistance, and strong mechanical strength.

Further, even when the grill is heated, the grill heater 10 is turned on / off and the electric power is controlled according to the instruction of the microcomputer 28, so that the table 70 is arranged on the holding shelf 74a so as to be closer to the grill heater 10, and the food on the table 70 is placed. The grill can be heated.

Here, the grill heater 10 and the lower heater 11 may be, for example, a flat mica heater, or may be configured by using a quartz tube heater or a sheathed heater.

Regarding the operation during heating and cooking of this embodiment, microwave heating will be described with reference to FIGS. 1 and 2, and oven heating will be described with reference to the case where the food in the heating chamber 7 is cooked according to FIG. explain.

For example, when cooking food by microwave, the food is placed on a table 70 arranged from the door portion 52 to the bottom surface of the heating chamber 7, the door portion 52 is closed, and the microwave is used in the states of FIGS. 1 and 2. Cooking is started.

Cooking is started by pressing the start button (not shown) after setting the heating time, heating power, etc. by the operation panel (not shown) provided in front of the machine room 2.

Here, when the food is placed on the table 70 and started without setting the operation panel, the heating time and the heating power are automatically set from the weight of the food detected by the weight sensor 6 and cooked. There is also.

When heating is started, microwave energy is radiated from the magnetron 20 and the microwave energy is supplied to the heating chamber 7 via the waveguide 50.

With the oscillation of the magnetron 20, the antenna motor 22 starts to rotate, and the antenna 57 below the protective plate 78 rotates.

The rotation of the antenna 57 diffuses the microwaves in the heating chamber 7 to uniformly heat the food.

Here, the rotation of the antenna 57 may be intermittently rotated or speed controlled according to the position of the food on the table 70.

Further, the cooling fan 24 in the machine room 2 is driven in order to suppress the temperature rise of the magnetron 20 due to the heat generated during oscillation.

On the other hand, in the case of oven cooking, for example, the table 70 on which the food 60 such as bread is placed is the heating chamber 7 while sliding the holding shelves 74 arranged on the left and right sides of the heating chamber 7 from the front door portion 52. After being pushed into the inside of the oven, the door portion 52 is closed and oven cooking is started in the state of FIG.

The oven cooking is started by pressing the buttons on the operation panel in front of the machine room 2 after the setting of the heating time and the heating temperature of the food 60 is completed.

When cooking is started, the grill heater 10 above the heating chamber 7 and the lower heater 11 below the heating chamber 7 are energized, and heat is applied from the upper and lower wall surfaces of the heating chamber 7.

Further, since the wall surface of the heating chamber 7 becomes hot in oven cooking, the cooling fan 24 is driven in order to suppress the temperature rise of the machine room 2 due to heat leakage.

The cooling fan 24 may be driven constantly or intermittently with the cooking time, for example, by detecting the temperature of the control board 27.

The internal temperature of the heating chamber 7 is sensed by, for example, a temperature sensor (not shown) such as a thermocouple or a thermistor provided on the side surface of the heating chamber 7, and when the temperature of the heating chamber 7 is higher than the set value, the grill heater 10 The power supply to the lower heater 11 or the lower heater 11 is stopped, or the power is reduced to maintain the temperature near the set temperature.

That is, the temperature of the heating chamber is controlled by ON / OFF of the grill heater 10 and the lower heater 11 and electric power.

Here, if the temperature sensor (not shown) is a non-contact infrared temperature sensor, it is possible to directly measure the wall temperature of the heating chamber or the temperature of the object to be heated.

Further, in the configuration of FIG. 3, unlike FIG. 1 in which the table 70 is arranged on the bottom surface of the heating chamber 7 in which the lower heater 11 is installed, the heat of the lower heater 11 is easily transferred directly to the inside of the heating chamber 7. Therefore, the temperature rises in the refrigerator at a high speed, and highly energy-saving cooking can be performed.

Further, as compared with the configuration of FIG. 1, the height (capacity) of the heating chamber 7 is increased by the thickness of the table 70, the temperature of the heating chamber 7 is uniformly stabilized, and oven cooking with less uneven baking is performed. It can be carried out.

On the other hand, it goes without saying that when the table 70 is arranged on the holding shelf 74a and the grill is heated only by the grill heater 10, the food can be cooked by the same heater control as the oven.

As described above, in the heating cooker of the present embodiment, the table 70 is arranged on the bottom surface of the heating chamber 7 for microwave heating, or the table 70 is arranged on the holding shelf 74b for oven heating. Further, even in the case of grill heating in which the table 70 is arranged on the holding shelf 74a, each cooking method can be performed on one table by changing the arrangement height of the table 70.

Therefore, in the cooking using the table 70 of this embodiment, by using the table 70 in combination, it is not necessary to pack the accessories that are rarely used together with the cooking cooker, and the storage space of the kitchen is not impaired. It is possible to provide a cooking cooker that can be used comfortably.

As shown in FIG. 5B, ribs 70c are erected on the table (back surface) 70b in the direction perpendicular to the direction in which the table 70 is taken in and out to prevent the object to be heated from slipping out when the table 70 is taken in and out. By providing the table 70 with an edge height of 70d, it is possible to receive oil and juice from the object to be heated when the table (front surface) 70a is used, and the table (back surface) 70b faces up on the holding shelf 74. When arranged, it is possible to easily add a brown color by heating the grill.

In FIG. 5B, recesses are formed on the table (back surface) 70b near both ends on the front side and near the center on the rear side, and these recesses engage with the weight sensor 6, respectively. Not only three weight sensors 6 are provided corresponding to the recesses, but also the weight sensors 6 are provided only near the center of the rear side, and the remaining vicinity of both ends on the front side is replaced with simple columns instead of the weight sensors 6. May be provided. In this case, one weight sensor 6 can measure the weight of food.

Next, FIG. 4 is a side sectional view of another embodiment of the heating cooker of the present invention, in which a hot air unit for circulating hot air is arranged in the heating chamber 7 behind the back surface of the heating chamber 7.

In this embodiment, the configuration and usage of the table 70 inside the heating chamber 7 are the same as those in FIGS. 1 to 3, and the description thereof will be omitted.

Here, in the present embodiment, the machine room 2 on which the parts such as the magnetron 20 are mounted is arranged below the heating chamber 7, but is arranged on the side surface of the heating chamber 7 as shown in FIGS. 1 to 3. Alternatively, the machine chamber 2 may be arranged on the bottom surface of the heating chamber 7 as in the present embodiment in FIGS. 1 to 3.

In this embodiment, by mounting the hot air unit 9, it is possible to perform oven cooking when the table 70 and the square cooking plate 71 are arranged in two upper and lower stages in the heating chamber 7.

Here, the positional relationship between the table 70 and the cooking plate 71 does not matter.

Further, when the grill heater 10 is used to heat the grill, it goes without saying that if the cooking plate 71 is used, the grill cooking can be used in the same manner as the conventional heating cooker without removing the table 70.

Therefore, when the table 70 and the cooking plate 71 are arranged in two upper and lower stages in the heating chamber 7, the heating chamber 7 has a space 7a between the ceiling surface of the heating chamber and the cooking plate 71 (top cooking plate) and the cooking plate 71. It is divided into three spaces, a space 7b between the table 70 and the table 70, and a space 7c between the table 70 and the bottom surface of the heating chamber 7.

A ventilation port 72 formed of a large number of punching holes is provided on the back wall of the heating chamber 7 facing the door portion 52, and the ventilation port 72b for sucking air into the hot air unit 9 and the air heated by the hot air heater 12 are provided. It is composed of ventilation ports 72a and 72c that blow out air.

Here, in this structure, the hot air is blown out only from the space 7a and the space 7c of the heating chamber 7, but a ventilation port for blowing out the hot air may be provided in the space 7b.

Behind these ventilation ports 72, a hot air unit 9 composed of a radial fan 30, a fan motor 32 connected to the radial fan 30, and a hot air heater 12 arranged on the outer periphery of the fan motor 32 is arranged. The structure is such that hot air circulates between the heating chamber 7 and the hot air unit 9 via the ventilation port 72.

Here, the hot air heater 12 may be composed of, for example, a rod-shaped quartz tube, a sheathed heater, or the like, and may be provided with a large number of heat radiation fins (not shown) on the surface thereof.

Further, the hot air heater 12 may be, for example, U-shaped or planar as long as it can be arranged inside the hot air unit 9, and the number of the hot air heaters 12 may be one, two, or a plurality. It may be configured.

Further, the fan motor 32 is provided behind the radial fan 30, but when the temperature of the fan motor 32 is high, if a small propeller fan (not shown) is installed on the rotating shaft of the fan motor 32, the air flow of the fan Therefore, the temperature rise is suppressed.

In the hot air unit 9, the air blown out through the radial fan 30 is heated by the hot air heater 12 arranged downstream of the radial fan 30, and heated with the space 7a and the table 70 between the upper surface of the heating chamber 7 and the cooking plate 71. Hot air 43a, 43c is blown into the heating chamber 7 from the ventilation ports 72a, 72c arranged in the space 7c between the bottom surfaces of the chamber 7.

The hot air 43a blown out from the ventilation port 72a of the space 7a flows toward the door portion 52 while heating the surface of the food 61 of the cooking plate 71, passes between the door portion 52 and the cooking plate 71, and flows toward the space 7b. Become.

Here, since the food 61 can be heated by using the grill heater 10 even if the heating is insufficient with hot air, even if the amount of heat of the hot air 43a is small, it can be heated in the oven without uneven baking.

Further, the hot air 43c blown out from the ventilation port 72c of the space 7c flows toward the door portion 52 while heating the back surface of the table 70 and the bottom surface of the heating chamber 7, and flows upward through the gap between the door portion 52 and the table 70. , The flow is toward the space 7b.

Here, if the heating of the food 60 is insufficient only with hot air, the lower heater 11 can be used to cook with less uneven baking.

The hot air entering the space 7b from the space 7a and the space 7c flows from the door portion 52 toward the hot air unit 9 while heating the food 60, and repeats a circulating flow entering the radial fan 30 from the ventilation port 72b.

The internal temperature of the heating chamber 7 is detected by, for example, a temperature sensor (not shown) such as a thermocouple or a thermistor provided on the side surface of the heating chamber 7, and when the temperature of the heating chamber 7 is higher than the set value, The power supply to the grill heater 10 and the hot air heater 12 is stopped or the power is reduced, and only the radial fan 30 is rotationally driven.

That is, the temperature of the heating chamber 7 is controlled by ON / OFF and electric power of the grill heater 10, the lower heater 11, and the hot air heater 12.

Here, these controls may be controlled by combining any of the three heaters 10, 11 and 12, or the required heater may be selected according to the menu.

As described above, in the heating cooker of the present embodiment, even in the configuration in which the foods 60 and 61 are arranged in the upper and lower two stages in the heating chamber 7, any of the upper and lower foods 60 and 61 is placed on the table 70. By packing only one cooking plate 71, which is infrequently used, in the cooking cooker, it is possible to provide a cooking cooker in a more comfortable kitchen environment.

As described above, in the present embodiment, the heating chamber, the weight sensor provided below the bottom surface of the heating chamber, the table held by the weight sensor on which the food is placed, and the waveguide in the heating chamber are provided. It is provided with a magnetron connected via a magnetron, a grill heater provided at least above the heating chamber, and a holding shelf arranged on the side surface of the heating chamber, and is held by a weight sensor when the food is microwave-heated by the magnetron. The feature is that the table can be placed on the holding shelf and can also be used for radiant heating of food with a grill heater.

In addition, the table is made of mullite cozy light type ceramic that has excellent heat resistance and transmits high frequencies.

In addition, a lower heater is provided below the heating chamber so that food placed on the table can be cooked in the oven in the heating chamber kept at a high temperature.

Furthermore, a hot air unit consisting of a hot air heater and a fan is provided on the wall surface of the heating chamber, and a table and other square cooking plates are placed on the upper and lower holding shelves to enable hot air cooking.

Further, an edge is provided on the outer periphery of the table, and the bottom surface of the edge is substantially aligned with the bottom surface of the food inlet of the heating chamber.

Furthermore, the weight sensor holds three places on the table.

Also, by making the table black, it has the effect of emitting far infrared rays, and at the same time, because it is made of ceramic, it has higher heat storage than the square cooking plate made of sheet metal.

Also, by not using carbon to color the black color of the table, microwave loss was suppressed to the same level as before.

Also, when using the table on a holding shelf, by placing the back side up, the edge of the outer circumference of the table has a certain height, so it is closer to the grill heater than when the front side is up. It can be used for efficient baking.

With this configuration, the height of the table arrangement can be adjusted by microwave heating and heater heating, and cooking can be performed on the same table regardless of the cooking method, so the number of accessories for the cooking cooker is reduced. It is possible to save the storage space for accessories in the kitchen, and to provide highly energy-saving cooking by configuring the state of the heating chamber to increase the heating efficiency according to the heating method.

In addition, since the table has excellent heat resistance and transmits high frequencies, microwave heating and heater heating can be performed more comfortably, improving usability.

In addition, heat can be easily transferred from the lower heater to the heating chamber, and the temperature of the heating chamber can be quickly increased to enable oven heating with high thermal efficiency.

Furthermore, the heating chamber can be raised during oven heating compared to microwave heating to hold high-temperature air in a large volume, enabling oven heating with less uneven baking.

In addition, it is easy to install it on the holding shelf of the heating chamber, and it is easy to attach and detach the table arranged on the bottom of the heating chamber, which makes it easy to use.

Furthermore, the weight sensor stably holds the table placed on the bottom of the heating chamber, and it is possible to accurately detect the weight of food and perform stable microwave heating.

In addition, making it black has the effect of emitting far infrared rays, and at the same time, because it is made of ceramic, it has a higher heat storage property than a square cooking dish made of sheet metal, so it is possible to provide food that has been heated with heat.

Also, by not using carbon for coloring, microwave loss can be suppressed as much as possible and heating efficiency can be made equal to the current level.

In addition, by providing a high edge on the outer circumference of the table, if the table is placed on the holding shelf with the table turned upside down, it will be closer to the grill heater than with the surface facing up, making it easier to color the object to be heated. be able to.

Furthermore, there is no concern that the rubber seal filled on the outer circumference of the table to fix the table will change over time in a high temperature environment or a high humidity environment.

2 ... Machine room, 7 ... Heating room, 9 ... Hot air unit, 10 ... Grill heater, 11 ... Lower heater, 20 ... Magnetron, 70 ... Table, 71 ... Cooking plate

Claims

A heating chamber, a table made of a ceramic material on which the object to be heated is placed, a magnetron connected to the heating chamber via a waveguide, a grill heater for heating the object to be heated, and the grill. It has a lower heater provided below the heater and a holding shelf arranged on the side surface of the heating chamber, and the table is held in a predetermined position when the object to be heated is microwave-heated by the magnetron. A heating cooker characterized in that when the object to be heated is heated by a grill heater, the table can be moved above the predetermined position and held on the holding shelf.
The heating cooker according to claim 1, wherein the table is made of a mullite cozy light-based ceramic that transmits high frequencies.
Claim 1 is characterized in that a hot air unit composed of a hot air heater for supplying hot air to the heating chamber and a fan is provided, and the table and other square cooking dishes are arranged on upper and lower holding shelves to perform hot air cooking. Or the cooking device according to any one of 2.
The heating cooker according to any one of claims 1 to 3, wherein the table is made of ceramic, which has a black effect of emitting far infrared rays and has a higher heat storage property than sheet metal.
The heating cooker according to claim 4, wherein the table is colored black without using carbon so as to suppress microwave loss to the same level as before.
The edge of the outer periphery of the table is configured to have a height, and when the table is placed on the holding shelf and used, the back surface is turned up so that the table is closer to the grill heater than when the front surface is turned up. The cooker according to any one of claims 1 to 5, which is configured as described above.