JP2011069535A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker which secures the purifying and decomposing performance of an exhaust from a heating chamber without using an exclusive heating source for a catalyst body, and has superior energy saving performance. <P>SOLUTION: As an electromagnetic wave absorption heating element 30 absorbing microwave 33 and generating heat is included inside the catalyst body 25, food is heated by the microwave 33, and simultaneously part of the microwave 33 at that time is absorbed by the electromagnetic wave absorption heating element 30, thus the heat is conducted to the entire catalyst body 25 from the electromagnetic wave absorption heating element 30, and a temperature of the catalyst body 25 is increased to an activation temperature. Thus, not only the exclusive heat source for preheating the catalyst body 25 becomes unnecessary, but also an odor component generated in cooking only by microwave 33 can be decomposed, which is previously difficult. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cooking device for cooking food to be heated such as food.

  In the field of such cooking devices, equipment such as grills, roasters, and microwave ovens that can cook foods and other heated objects by generating infrared rays, hot air, etc. by using electric energy or combustion energy as a heating source is widespread. is doing. (For example, refer to Patent Document 1).

  In the heating cooker described in Patent Document 1, as shown in FIG. 6, a heater 5 is arranged in each meandering portion 4 of the meandering passage 3 connected to the air passage 2 inside the air heating chamber 1, At least one of the air heating chamber 1 and the air passage 2 is provided with a catalyst 6 heated by a heater 5, and suction air 8 including oil smoke from the cooking chamber 7 is brought into contact with the catalyst 6. It was.

  The purpose was to improve the purification and decomposition performance of the suction air 8 by heating the catalyst 6 efficiently.

JP 2000-168186 A

  However, in the configuration of the conventional heating cooker shown in FIG. 7, a dedicated heater 5 is required to raise and maintain the catalyst 6 at the activation temperature. In some cases, the power of the heat source necessary for cooking in the cooking chamber 6 is insufficient, and the cooking time of the food in the cooking chamber 7 may be long, or a good cooking result may not be obtained.

  In addition, in order to ensure cooking performance above a certain level, a large amount of power consumption is required, and as a result, energy savings and the like may be affected.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and provides a cooking device with high energy savings by ensuring the purification and decomposition performance of exhaust from the heating chamber without using a dedicated heating source for the catalyst body. The purpose is to do.

  In order to solve the above-described conventional problems, a heating cooker according to the present invention includes a food heating chamber, an exhaust chamber communicating with outside air, a magnetron provided outside the heating chamber, and a guide communicating with the magnetron and the heating chamber. A wave tube and a catalyst body that is provided in an exhaust chamber and contains an electromagnetic wave absorption heating element that absorbs electromagnetic waves such as microwaves and generates heat.

  In this cooking device, an electromagnetic wave absorption heating element that absorbs electromagnetic waves such as microwaves and generates heat is contained in the catalyst body, so that the food is heated by the microwaves and at the same time, the microwave at that time is heated. The portion is absorbed by the electromagnetic wave absorption heating element, and is thermally conducted from the electromagnetic wave absorption heating element to the entire catalyst body, whereby the temperature of the catalyst body itself can be raised to the activation temperature.

  Therefore, not only a dedicated heat source for preheating the catalyst body becomes unnecessary, but also it becomes possible to decompose odor components generated during cooking of microwaves, which has been difficult in the past.

  Further, when the cooking by microwaves is finished, the temperature of the electromagnetic wave absorption heating element in the catalyst body gradually decreases, but since the temperature of the catalyst body is maintained to some extent, the residual odor in the heating chamber is Is broken down into

  Furthermore, in a heating cooker having both a heat source for firing and heating (for example, a heater) and a microwave heating function (magnetron), since the heater and the magnetron are normally used alternately, hot air from the heater is transmitted to the catalyst body. At the same time, when the magnetron is operated, microwaves are absorbed by the electromagnetic wave absorption heating element, and the catalyst body itself self-heats, so that the time for the catalyst body to reach the activation temperature can be shortened.

  Therefore, decomposition of the odor component is started at an early stage from the start of cooking, and the decomposition rate of the odor component can be increased.

  In this way, it is possible to effectively decompose odor components during cooking without requiring a dedicated heat source to reach the activation temperature of the catalyst body. It is possible to provide a heating cooker that can keep the atmosphere of the cooking space comfortable.

  According to the cooking device of the present invention, an electromagnetic wave absorption heating element that absorbs electromagnetic waves such as microwaves and generates heat is contained in the catalyst body, so that the food is heated by the microwaves and at the same time the microwaves are heated. A part is absorbed by the electromagnetic wave absorption heating element, and the catalyst body itself can be heated to the activation temperature by conducting heat from the electromagnetic wave absorption heating element to the entire catalyst body.

  Therefore, not only a dedicated heat source for preheating the catalyst body becomes unnecessary, but also it becomes possible to decompose odor components generated during cooking of microwaves, which has been difficult in the past.

  In addition, it is possible to provide a heating cooker that is rich in energy saving and can keep the atmosphere of a cooking space such as a kitchen comfortable.

Side surface sectional drawing of the heating cooker in Embodiment 1 of this invention. Top view of passage direction of catalyst body of heating cooker in same embodiment The conceptual diagram which shows the support condition of the catalyst substance of the catalyst body of the heating cooker in the embodiment The conceptual diagram which shows the loading condition of the catalyst substance of another catalyst body example of the heating cooker in the embodiment Side surface sectional drawing of the heating cooker in Embodiment 2 of this invention. Side sectional view of a conventional cooking device

  The first invention is a food heating chamber, an exhaust chamber communicating with the outside air, a magnetron provided outside the heating chamber, a waveguide communicating with the magnetron and the heating chamber, a microwave provided in the exhaust chamber, etc. And a catalyst body containing an electromagnetic wave absorption heating element that generates heat by absorbing the electromagnetic wave.

  As a result, an electromagnetic wave heating element that absorbs electromagnetic waves such as microwaves and generates heat is contained in the catalyst body, so that the food is heated by the microwaves, and at the same time, part of the microwaves at that time absorbs the electromagnetic waves. The catalyst body itself can be heated to the activation temperature by being absorbed by the heating element and conducting heat from the electromagnetic wave absorbing heating element to the entire catalyst body.

  Therefore, not only a dedicated heat source for preheating the catalyst body becomes unnecessary, but also it becomes possible to decompose odor components generated during cooking of microwaves, which has been difficult in the past.

  Further, when the cooking by microwaves is finished, the temperature of the electromagnetic wave absorption heating element in the catalyst body gradually decreases, but since the temperature of the catalyst body is maintained to some extent, the residual odor in the heating chamber is Is broken down into

  Furthermore, in a heating cooker having both a heat source for firing and heating (for example, a heater) and a microwave heating function (magnetron), since the heater and the magnetron are normally used alternately, hot air from the heater is transmitted to the catalyst body. At the same time, when the magnetron is operated, microwaves are absorbed by the electromagnetic wave absorption heating element, and the catalyst body itself self-heats, so that the time for the catalyst body to reach the activation temperature can be shortened.

  Therefore, decomposition of the odor component is started at an early stage from the start of cooking, and the decomposition rate of the odor component can be increased.

  In this way, it is possible to effectively decompose odor components during cooking without requiring a dedicated heat source to reach the activation temperature of the catalyst body. It is possible to provide a heating cooker that can keep the atmosphere of the cooking space comfortable.

  In a second aspect of the invention, particularly in the first aspect, the catalyst body is installed in the vicinity of the exhaust opening of the heating chamber communicated with the exhaust chamber, and constitutes a microwave leakage prevention body downstream of the catalyst body, A part of the microwave irradiated in the heating chamber is absorbed by the electromagnetic wave absorption heating element in the catalyst body, and the catalyst body is heated to the activation temperature.

  As a result, a part of the microwave irradiated into the heating chamber is absorbed by the electromagnetic wave absorption heating element in the catalyst body, and the catalyst body reaches the activation temperature, but the microwave provided on the downstream side of the catalyst body The leakage preventing body prevents the microwave from leaking outside the microwave leakage preventing body.

  Therefore, the microwave irradiated into the heating chamber is used only for heating the food and the catalyst body, and can suppress unnecessary power consumption.

  In a third aspect of the invention, in particular, in the first or second aspect of the invention, the catalyst body includes a porous ceramic molded body and a catalyst substance that oxidatively decomposes hydrocarbon components, and the electromagnetic wave absorption heating element is made porous. A carrier is constituted by being dispersed and fixed in a ceramic molded body, and a catalyst substance is dispersed and fixed on at least the surface portion of the carrier.

  As a result, electromagnetic waves such as microwaves are absorbed by the electromagnetic wave absorption heating element inside the carrier, so that the temperature rise of the electromagnetic wave absorption heating element uniformly reaches inside the carrier and, as a result, the entire catalyst body reaches the activation temperature. be able to.

  Therefore, temperature unevenness in the contact region between the catalyst body and the hydrocarbon component can be suppressed, and stable decomposition performance of the hydrocarbon component can be maintained.

  In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the carrier is a porous ceramic molded body obtained by laminating a porous ceramic fiber formed into a sheet into a corrugated shape, A certain amount of an electromagnetic wave absorption heating element is mixed in the space between the porous ceramic fibers.

  As a result, when 30 or the exhaust gas having such a component passes while contacting the catalyst body, it is decomposed into carbon dioxide and water vapor at an early stage.

  According to a fifth invention, in particular, in any one of the first to fourth inventions, the electromagnetic wave absorption heating element uses any one of Fe2O3, Fe3O4, or SiC.

  As a result, these electromagnetic wave absorption heating elements have the action of absorbing electromagnetic waves and generating heat, and at the same time have a certain catalytic action such as oxidative decomposition of hydrocarbon components, etc. As a result, the activation temperature reaches itself as a catalyst.

  Therefore, when these electromagnetic wave absorption heating elements are exposed on the surface of the catalyst body, the oxidative decomposition action of hydrocarbon components and the like is exhibited in the same manner as the original catalyst substance, so that the decomposition performance of the entire catalyst body is improved. Can do.

  Furthermore, by taking into account the catalytic action of these electromagnetic wave absorption heating elements, it is possible to reduce the amount of the original catalyst substance supported, and as a result, it is possible to contribute to the cost reduction of the catalyst body.

  According to a sixth invention, in particular, in the third invention, the catalyst substance is composed of one or more oxides of Mn, Cu, Co, Ni, or Ce.

  As a result, the catalyst material based on these oxide components has a constant oxidative decomposition action even near room temperature if the hydrocarbon component in the exhaust gas is about several tens of ppm, and therefore has a high concentration of about 500 ppm. Even at 150 to 250 ° C., the oxidative decomposition action can be easily exerted.

  Furthermore, since these catalyst substances can be directly supported on a carrier in the form of a slurry, the supporting operation and processing as a catalyst body can be simplified.

  In a seventh aspect of the invention, in particular, in any one of the first to third aspects of the invention, the catalyst body is a porous ceramic molded body formed by laminating a porous ceramic fiber molded into a corrugated shape. A ceramic porous coating layer containing an electromagnetic wave absorption heating element is formed on the surface portion of the carrier, and a catalyst material is supported on the surface including the porous portion of the porous coating layer.

  Thereby, since the electromagnetic wave absorption heating element is contained only in the ceramic porous coating layer, the heat from the electromagnetic wave absorption heating element that has absorbed the electromagnetic wave can be rapidly diffused throughout the porous coating layer.

  In addition, since the carrier constitutes a corrugated porous ceramic molded body made of porous ceramic fibers, the air layer inside the carrier exhibits a heat insulating action, and the porous coating layer can be maintained at the activation temperature. it can.

Furthermore, the ceramic porous coating layer increases the mechanical strength of the carrier made of ceramic fibers, and the catalyst material having the oxidative decomposition action of the hydrocarbon component is uniformly dispersed and supported on the surface portion including the porous portion. Can do.

  According to an eighth invention, in particular, in the seventh invention, the catalyst material uses one or more of Pt, Pd, Rh, and Ru noble metals.

  As a result, by using these noble metal components as a catalyst substance, it can be uniformly and firmly fixed on the surface portion including the porous portion of the porous coating layer formed on the support, and it is relatively sulfur in the exhaust gas. Even if many components are contained, a stable oxidative decomposition action can be maintained and a long-life catalyst body can be constituted.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
1 is a side cross-sectional view of a cooking device according to Embodiment 1 of the present invention, FIG. 2 is a top view in the passage direction of a catalyst body of the cooking device according to the embodiment, and FIG. 3 is cooking by heating according to the embodiment. FIG. 4 is an enlarged conceptual view of a partial cross section of another catalyst body example of the heating cooker according to the embodiment.

  The configuration, operation, and action of the heating cooker according to Embodiment 1 of the present invention will be described using the above drawings.

  In FIG. 1, a heating chamber 11 having a front opening is configured in a housing 10, and an opening / closing door 12 includes a front surface of the housing 10 with a lower portion serving as a fulcrum on an opening side in front of the heating chamber 11. It is installed in the front opening direction.

  A container 14 containing food is provided on the bottom surface 13 of the heating chamber 11. The bottom surface portion 13 is made of heat-resistant crystallized glass or the like and transmits electromagnetic waves such as microwaves. Below the bottom surface portion 13, there is a microwave stirring chamber 15 formed of a metal recess, and a stirring motor 16. An agitation antenna 17 directly connected to is provided.

  Further, an opening 20 is provided on the rear side of the bottom of the microwave stirring chamber 15 through a waveguide 19 directly connected to the magnetron 18.

  In this example, the magnetron 18, the waveguide 19, and the micro are provided with the stirring chamber 15 and the stirring motor 16 on the bottom side of the heating chamber 11. It can be provided on the side.

  On the other hand, an exhaust chamber 23 communicating with the exhaust port 21 of the housing 10 and the exhaust opening 22 of the heating chamber 11 is formed in the upper rear part of the heating chamber 11, and in the exhaust chamber 23 near the exhaust opening 22. The catalyst body 25 for decomposing the exhaust gas 24 mainly composed of hydrocarbon components generated by microwave cooking in the heating chamber 11 is provided. Further, on the downstream side of the catalyst body 25, φ3 to 3.8 mm is provided. A metal microwave leakage prevention body 26 having a large number of such holes is provided.

On the other hand, as shown in FIG. 2 and FIG. 3, the catalyst body 25 is formed by laminating a porous ceramic fiber 28 into a sheet so as to form a passage 27 in a fixed direction, A porous ceramic molded body 29 that is light and has a high heating rate, and is configured by mixing a certain amount (for example, 10 to 20%) of an electromagnetic wave absorption heating element 30 made of Fe3O4 in the gaps between the porous ceramic fibers 28. The carrier 31 carries a catalyst material 32 having an action of oxidatively decomposing hydrocarbon components including oily smoke.

  In this example, Fe3O4 is used as the electromagnetic wave absorber 30, but in addition, Fe2O3, SiC, etc. can be similarly applied as the electromagnetic wave absorber 30 by adjusting the appropriate content according to them. Can do.

  The catalyst material 31 is composed of one or more kinds of oxides such as Mn, Cu, Co, Ni, or Ce. Specifically, in this example, Mn is the main component, and a small amount of Cu, These catalyst materials 31 are uniformly impregnated not only on the surface of the support 30 but also between the porous ceramic fibers 27 with fine particles of complex oxide containing Ce.

  Since the catalyst material 31 in the complex oxide state can be directly supported on the carrier 30 in the form of a slurry, there is an advantage that the supporting operation and processing can be simplified.

  Further, the oxidative decomposability of these catalyst substances 32 is as high as about 500 ppm because the hydrocarbon component in the exhaust gas 24 has a constant oxidative decomposition action even near room temperature if it is about several tens of ppm. However, as an ability, it can be easily decomposed at 150 to 250 ° C.

  Therefore, the catalyst body 25 is light and has good temperature rise characteristics, and can maintain sufficient oxidative decomposition performance even at a relatively low temperature.

  Furthermore, although the electromagnetic wave absorber 30 generates heat rapidly due to absorption of electromagnetic waves such as microwaves, the carrier 31 is extremely light and has a low heat capacity, so that the heat from the electromagnetic wave absorption heat generator 30 is caused by convection and heat conduction. It is rapidly transmitted to the entire support 31 so that the entire catalyst body 25 can rapidly reach the activation temperature.

  On the other hand, as another example of the catalyst body 40, as shown in FIG. 4, a ceramic porous coating layer 42 containing an electromagnetic wave absorber 41 is formed on the surface of the carrier 31 used in FIG. The surface of the coating layer 42 including the porous portion is loaded with a catalyst substance 43 having an oxidative decomposition action of a hydrocarbon component.

  The catalyst material 43 uses one or more of noble metals such as Pt, Pd, Rh, and Ru, and in this example, Pt and Pd are supported at a ratio of about 2 to 1.

  In this case, since the electromagnetic wave absorption heating element 41 is contained only in the ceramic porous coating layer 42, the heat from the electromagnetic wave absorption heating element 41 that has absorbed the electromagnetic wave can be rapidly diffused throughout the porous coating layer 42. .

  Further, since the carrier 31 constitutes a corrugated porous ceramic molded body 29 made of the porous ceramic fibers 28, the air layer inside the carrier 31 exhibits a heat insulating action, and the porous coating layer 42 is activated at the activation temperature. Can be maintained.

  Furthermore, the ceramic porous coating layer 42 can increase the mechanical strength of the carrier 31, and at the same time, maintains a stable oxidative decomposition action even if the exhaust gas 24 contains a relatively large amount of sulfur components. Thus, the long-life catalyst body 40 can be obtained.

  Thus, when the content of the cooked product is known in advance, the catalyst body 25 and the catalyst body 40 can be selectively used depending on the amount of sulfur components.

  Next, the effect | action in the heating cooker comprised in this way is demonstrated.

  When the opening / closing door 12 is opened, a container 14 containing food is placed on the bottom surface portion 13 of the heating chamber 11, the opening / closing door 12 is closed, and the magnetron 18 is activated by an energization operation, the generated microwave 33 (meandering-shaped An arrow) passes through the waveguide 19 to reach the opening 20, and at the same time, the agitation antenna 17 directly connected to the agitation motor 16 that starts rotating rotates in the microwave agitation chamber 15 with a constant operation.

  As a result, the microwave 33 transmitted through the bottom surface portion 13 is used for uniform heating of the food in the container 14. However, not all the microwaves 33 are absorbed by the food, and some of the microwaves 33 are scattered in the heating chamber 11.

  At this time, a part of these scattered microwaves 33 is absorbed by the electromagnetic wave absorption heating element 30 in the catalyst body 25, and the entire catalyst body 25 is heated to the activation temperature by self-heating of the electromagnetic wave absorption heating element 30. To do.

  Further, the microwave 33 that is not absorbed by the electromagnetic wave absorption heating element 30 is prevented from leaking into the outside air by the microwave leakage prevention body 26 provided on the downstream side of the catalyst body 25. It is absorbed and contributes to the maintenance of the activation temperature of the catalyst body 25.

  In this state, the food in the container 14 absorbs the microwave 33 and is heated, and accordingly, exhaust (a straight arrow) composed of a hydrocarbon component is discharged into the heating chamber 11.

  Thereafter, the exhaust 24 comes into contact with the catalyst body 25 maintained at the activation temperature by the above-described action from the exhaust opening 22, and most of the exhaust 24 is discharged into the outside air as carbon dioxide and water vapor.

  In addition, a trace amount of hydrocarbon component exists as a residual odor in the heating chamber 11 after the cooking by the microwave is completed and the container 14 is taken out, but the temperature of the catalyst body 25 itself does not rapidly decrease. Since the temperature near the activation temperature is maintained, these hydrocarbon components are almost completely decomposed, and when the door 12 is opened for reuse after a lapse of time, the residual odor is extremely reduced. be able to.

  As described above, since the catalyst body 25 can be heated to the activation temperature only by the microwave 32, a dedicated heat source for preheating the catalyst body 25 is not necessary, and it has been difficult in the past. It becomes possible to decompose odor components generated during cooking using only a microwave, and it can be easily developed into a so-called single-function microwave oven.

  Therefore, it is possible to provide a heating cooker that is rich in energy savings and that can keep the atmosphere of a cooking space such as a kitchen comfortable.

(Embodiment 2)
FIG. 5 is a side sectional view of the heating cooker according to the second embodiment of the present invention.

  The configuration, operation, and action of the heating cooker according to the second embodiment of the present invention will be described using the above drawings.

  In FIG. 5, the difference from the first embodiment is that a heater 51 for baking cooking is provided above the heating chamber 50, and a slatted net 52 for placing food is provided in the vicinity of the center of the heating chamber 11. is there.

  In addition, the thing of the same code | symbol as 1st Embodiment has the same structure, and abbreviate | omits description.

  In FIG. 5, when the food 53 is placed on the slatted net 52, an energization operation suitable for each type of food is selected.

  For example, (1) the microwave 54 first generated from the magnetron 18 is absorbed in the food 53, and then the heater 51 is energized and baked and heated (2). In the case of (3), (3) irradiation of the microwave 54 and heating of the heater 51 may be performed alternately.

  In the case of (1), the heat generated by the heater 51 is transmitted into the exhaust 55, whereby the catalyst body reaches the activation temperature, and the activation temperature of the catalyst body 25 can be maintained by the subsequent microwave heating. it can.

  In the case of (2), the catalyst body 25 self-heats by microwave heating, and the activation temperature of the catalyst body 25 can be maintained by the exhaust heat generated by the firing heating by the heater 51 thereafter.

  In the case of (3), heating by the exhaust heat by the heater 51 and self-heating of the catalyst body 25 by the microwave 54 occur almost simultaneously, and the catalyst body 25 can reach and maintain the activation temperature at an early stage.

  As described above, in the cooking device having both the heat source for baking and heating (for example, the heater 51) and the microwave heating function (magnetron 18) by the heater 51, the decomposition of the odor component is started at an early stage from the start of cooking. The decomposition rate of the components can be increased.

  As described above, the heating cooker of the present invention does not require a dedicated heat source for heating the catalyst body, even in the case of cooking with microwaves alone or in combination with cooking with a heater or microwave, The oxidation and decomposition performance of the catalyst body can be maintained with a relatively simple structure, and it is energy-saving. At the same time, it is possible to maintain a comfortable cooking space atmosphere such as a kitchen. It can be applied to various heating applications as well as cooking appliances.

DESCRIPTION OF SYMBOLS 11, 50 Heating chamber 18 Magnetron 19 Waveguide 22 Exhaust opening 23 Exhaust chamber 25, 40 Catalyst body 26 Microwave leakage prevention body 28 Porous ceramic fiber 29 Porous ceramic molded body 30, 41 Electromagnetic wave absorption heating element 31 Carrier 32, 43 Catalytic substance 33 Microwave 42 Porous coating layer

Claims (8)

A heating chamber for food, an exhaust chamber communicating with the outside air, a magnetron provided outside the heating chamber, a waveguide communicating with the magnetron and the heating chamber, and an electromagnetic wave such as microwaves provided in the exhaust chamber. A cooking device provided with a catalyst body containing an electromagnetic wave absorbing heating element that generates heat. The catalyst body is installed in the vicinity of the exhaust opening of the heating chamber that is in communication with the exhaust chamber, and constitutes a microwave leakage prevention body downstream of the catalyst body, and a part of the microwave irradiated into the heating chamber is catalyzed. The cooking device according to claim 1, wherein the catalyst body is heated to an activation temperature by being absorbed by an electromagnetic wave absorption heating element in the body. The catalyst body includes a porous ceramic molded body and a catalytic material that oxidatively decomposes hydrocarbon components, and an electromagnetic wave absorption heating element is dispersed and fixed in the porous ceramic molded body to constitute a carrier, and at least the carrier The cooking device according to claim 1 or 2, wherein a catalyst substance is dispersed and fixed on the surface portion. The carrier was formed by forming a porous ceramic fiber into a sheet and laminating it in a corrugated shape to form a porous ceramic molded body, and a certain amount of electromagnetic wave absorbing heating element was mixed in the space between each porous ceramic fiber. The cooking device according to any one of claims 1 to 3. The heating cooker according to any one of claims 1 to 4, wherein the electromagnetic wave absorption heating element uses any one of Fe2O3, Fe3O4, or SiC. The cooking device according to claim 3, wherein the catalyst material is composed of one or more oxides of Mn, Cu, Co, Ni, or Ce. The catalyst body is made of a porous ceramic fiber formed into a sheet body, laminated in a corrugated shape to form a porous ceramic molded body as a carrier, and a porous ceramic body containing an electromagnetic wave absorption heating element on the surface of the carrier. The cooking device according to any one of claims 1 to 3, wherein a porous coating layer is formed and a catalyst material is supported on a surface including a porous portion of the porous coating layer. The heating cooker according to claim 7, wherein the catalyst material uses one or more of Pt, Pd, Rh, or Ru noble metals.