JP2007307269A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To remove soot and odor exhausted from a cooker to outside. <P>SOLUTION: Two kinds of catalyst bodies composed of catalyst layers formed on the surface of a structure body having a plurality of holes are placed above heating means, so that the catalyst bodies never hinder the heating of a material to be cooked. Thus, the cooker can cook effectively, and the soot and odor exhausted from a cooking chamber is not sensed at the outside. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooking device via a means for removing oily smoke, odor, etc. generated by cooking such as seafood with a catalyst or the like.

  Conventionally, this type of heating cooker is configured to remove oily smoke and odor discharged from a cooked product with a deodorizing catalyst attached to the upper portion of the cooker (see, for example, Patent Document 1).

FIG. 7 shows a conventional cooking device described in Patent Document 1. As shown in FIG. As shown in FIG. 7, the conventional cooking device includes an upper heater 72 provided on the upper side in the cooking chamber 71, a lower heater 73 provided on the lower side in the cooking chamber 71, an upper heater 72 and a lower heater. 73, a container supporting portion 75 of the cooking container 74 provided between 73, and a heating and cooking container 74 made of transparent heat-resistant glass that contains the food 76 to be cooked and placed on the container supporting portion 75. The food 76 in the cooking container 74 is cooked by radiant heat from above and below by energizing the upper heater 72 and the lower heater 73. The heating and cooking container 74 includes a container body and a lid, and an opening 77 is formed in the lid, and a deodorizing catalyst 78 is provided in the opening 77.
Japanese Patent Laid-Open No. 2003-210334

  However, in the conventional configuration, the deodorizing catalyst is only provided on the lid, and the portion near the food where the deodorizing catalyst works most efficiently is far from the heater, and the deodorizing catalyst is sufficient. Not heated. For this reason, there has been a problem that odors generated from foods cannot be effectively deodorized. Moreover, the deodorizing catalyst is arranged between the food and the heater for heating the food, and the radiant heat from the upper heater is difficult to be transmitted to the food, so that the cooking performance of the food cannot be sufficiently obtained. He also had problems.

  The present invention solves the above-mentioned conventional problems, and it is possible to remove oily smoke and odor generated from a cooking chamber by a catalyst body provided at an upper exhaust port of the cooking chamber. Since the two types of catalyst bodies composed of the catalyst layer formed on the surface of the structure having a plurality of holes are placed on the upper surface heating means, cooking can be effectively performed without disturbing the heating of the food, The purpose is to provide a cooking device in which the oily smoke and odor from the outside are not felt outside.

  In order to solve the above-described conventional problems, a heating cooker according to the present invention includes a cooking chamber for storing a food placed on a grill, an upper surface heating means for heating the upper surface of the food, and the cooking food. A lower surface heating means for heating the lower surface from under the grill; an exhaust port provided in a part of the upper portion of the cooking chamber; and an exhaust passage extending from the exhaust port to above the cooking chamber. A cooking device comprising a catalyst body provided on an inlet side and a catalyst body provided on an outlet side of the exhaust port, wherein the catalyst body has a space between the two types of catalyst bodies. Is composed of a catalyst layer formed on the surface of a structure having a plurality of holes.

  Thus, the catalyst body provided on the inlet side of the exhaust port is sufficiently heated because it is installed adjacent to the upper surface heating means for heating the upper surface of the food. Further, the catalyst body provided on the outlet side of the exhaust port is also sufficiently heated because it is installed near the upper surface heating means for heating the upper surface of the food. Oil smoke and odor generated from the cooked product are decomposed and removed when passing through the two types of catalyst bodies provided at the exhaust port, and then discharged to the outside through the exhaust passage passing above the cooking chamber. It becomes a cooking device where odor is not felt outside.

  The cooking device of the present invention is configured to remove oily smoke and odor generated from the cooking chamber during cooking by two kinds of catalyst bodies provided at the exhaust port, and the two kinds of catalyst bodies cover the upper surface of the cooked food. The heating means for heating is configured to be heated up to a temperature at which the effect of the catalyst appears. Oil smoke and odor components generated from the cooking chamber are decomposed and removed by the action of the catalyst when passing through the catalyst body heated to a sufficiently high temperature. After that, it is discharged to the outside from the exhaust passage passing above the cooking chamber, and the oil smoke and odor from the cooking chamber are not felt outside. In addition, since the two types of catalyst bodies are installed in the upper exhaust port of the cooking chamber, and the oil smoke and odor that have become hot due to cooking flow to the top, the oil smoke and odor can be effectively flowed to the catalyst body. . Moreover, since it is possible to shift the several hole of a catalyst body between two types of catalyst bodies, the probability that the air containing the smoke and odor which arose in the cooking chamber contacts a catalyst body becomes high. Therefore, it can be set as the heating cooker which has high decomposition capability of oil smoke and odor, and does not emit an odor outside.

  1st invention consists of the cooking chamber which accommodates the cooking put on the grill, the upper surface heating means which heats the upper surface of the cooking, and the lower surface heating which heats the lower surface of the cooking from the bottom of the grill Means, an exhaust port provided in a part of the upper portion of the cooking chamber, an exhaust passage passing from the exhaust port to above the cooking chamber, and a catalyst body provided on the inlet side of the exhaust port, and the exhaust port A cooking device comprising a catalyst body provided on the outlet side of the gas generator, wherein a space is provided between the two types of catalyst bodies, and the catalyst bodies are formed on the surface of a structure having a plurality of holes. By using the heating cooker configured of the catalyst layer thus formed, the two types of catalyst bodies are heated to a temperature at which the effect of the catalyst appears by the heating means for heating the upper surface of the cooked product. The air containing oily smoke and odor generated in the cooking chamber is hot and flows to the exhaust port installed at the top of the cooking chamber, and partly decomposes by passing through the catalyst provided on the inlet side of the exhaust port. After being removed and passing through the space formed between the two types of catalyst bodies, it can be decomposed and removed by passing through the catalyst body provided on the outlet side of the exhaust port. At that time, since the plurality of holes of the catalyst body can be shifted between the two types of catalyst bodies, the probability that the air containing oil smoke and odor generated in the cooking chamber contacts the catalyst body is increased. Therefore, it can be set as the heating cooker which has high decomposition ability of oil smoke and odor, and does not emit an odor outside.

  The second aspect of the invention is particularly a heating cooker in which the structure of the catalyst body provided on the inlet side of the exhaust port of the first aspect of the invention is configured to gradually decrease as the plurality of holes go from the inlet port to the outlet port. As a result, air containing oily smoke or odor generated in the cooking chamber is gradually reduced in the plurality of holes of the structure forming the catalyst layer when entering the catalyst body from the inlet of the exhaust port. Since the possibility of coming into contact with the wall surface of the hole in the structure is increased, the air passing through without contacting the catalyst layer is reduced. Therefore, most of the air containing oil smoke and odor generated in the cooking chamber comes into contact with the catalyst layer. Moreover, since it is possible to shift the some hole of a catalyst body between two types of catalyst bodies, the probability that the air containing the smoke and odor which arose in the cooking chamber contacts a catalyst body becomes high. Therefore, it can be set as the heating cooker which has higher decomposition ability of oily smoke and odor, and does not emit odor outside.

  In particular, the third aspect of the present invention is a cooking device in which the structure of the first aspect of the invention is configured so that the plurality of holes gradually become smaller from the entrance to the exit of the exhaust port. When the air containing odor or odor enters the catalyst body from the inlet of the exhaust port, the pores of the structure forming the catalyst layer are gradually becoming smaller, so it can come into contact with the wall surface of the hole in the structure Therefore, the amount of air passing through without contacting the catalyst layer is reduced. Therefore, most of the air containing oil smoke and odor generated in the cooking chamber comes into contact with the catalyst layer. Moreover, since it is possible to shift the some hole of a catalyst body between two types of catalyst bodies, the probability that the air containing the smoke and odor which arose in the cooking chamber contacts a catalyst body becomes high. Therefore, it can be set as the heating cooker which has higher decomposition ability of oily smoke and odor, and does not emit odor outside.

  In the fourth invention, in particular, the structure of the catalyst body provided on the inlet side of the exhaust port according to the first invention is configured so that the plurality of holes gradually become smaller from the inlet port toward the outlet port. The structure of the catalyst body provided on the outlet side is a heating cooker configured such that a plurality of holes gradually increase from the inlet of the exhaust port toward the outlet, so that air containing smoke or odor generated in the cooking chamber is obtained. When entering the catalyst body from the inlet of the exhaust port, since the plurality of holes of the structure forming the catalyst layer are gradually reduced, the possibility of contacting the wall surface of the hole of the structure increases. , Less air passes through without contacting the catalyst layer. Therefore, most of the air containing oily smoke and odor generated in the cooking chamber passes through the space formed between the two types of catalyst bodies after coming into contact with the catalyst layer, and reaches the catalyst body provided on the outlet side of the exhaust port. enter. In the catalyst provided on the outlet side of the exhaust port, the plurality of holes of the structure forming the catalyst layer are gradually enlarged, so that the air flow rate becomes slow and the possibility of coming into contact with the wall surface of the hole of the structure increases. . Moreover, since it is possible to shift the some hole of a catalyst body between two types of catalyst bodies, the probability that the air containing the smoke and odor which arose in the cooking chamber contacts a catalyst body becomes high. Therefore, it can be set as the heating cooker which has higher decomposition ability of oily smoke and odor, and does not emit odor outside.

  In the fifth aspect of the invention, in particular, a structure that forms a catalyst layer by using a heating cooker in which the structure of any one of the first to fourth aspects of the invention is a structure made of ceramic, fibrous ceramic, or metal. If ceramic or fibrous ceramic is used for the catalyst, the specific surface area is large, so that the adhesion of the catalyst layer becomes strong and the deodorizing ability of the catalyst body can be improved. Further, when a metal is used for the structure forming the catalyst layer, the catalyst body is easily heated because of its excellent heat conduction, so that the deodorizing ability of the catalyst body can be improved. Therefore, it can be set as the heating cooker which has higher decomposition ability of oily smoke and odor, and does not emit odor outside.

  In a sixth aspect of the invention, in particular, the catalyst layer of any one of the first to fifth aspects comprises a carrier layer mainly composed of at least barium, cerium and aluminum, and platinum, palladium supported on the surface of the carrier layer, By using a heating cooker composed of at least one of ruthenium and rhodium, the catalyst layer is a highly active noble metal as a means for decomposing and removing oil smoke and odor generated from the cooking chamber, so that the removal capability can be increased. . In addition, the catalyst layer has a carrier layer having strong adhesion between the structure and the noble metal. Therefore, it can be set as the heating cooker which is excellent in endurance capability, has much higher decomposition ability of oily smoke and odor, and does not emit odor outside.

  In the seventh aspect of the invention, in particular, the catalyst body according to any one of the first to sixth aspects is used as a heating cooker having a temperature of 200 ° C. or higher and 1000 ° C. or lower. When the catalyst passes through the surface of the catalyst body, the catalyst temperature is sufficiently increased, so that the treatment capacity of the catalyst can be increased. Further, since the catalyst temperature does not rise excessively, the catalyst is not aggregated, so that the catalyst is not deteriorated. Therefore, it is excellent in durability, and it can be set as the heating cooker which has the decomposition ability of oil smoke and odor high, and does not emit an odor outside.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a configuration diagram of a heating cooker according to the first embodiment of the present invention.

  FIG. 2 shows a sectional view of the catalyst body in the first embodiment of the present invention.

  In FIG. 1, the heating cooker 11 of the present invention includes an upper surface heating means 4 that heats the upper surface of the food 3 in the cooking chamber 1 that houses the food 3 placed on the grill 2 provided with the saucer 10. The lower surface heating means 5 for heating the lower surface, the inlet 12 of the exhaust port 6 provided in the upper portion of the cooking chamber 1, and the exhaust passage 7 passing from the outlet 13 of the exhaust port 6 to above the cooking chamber 1, The catalyst body 8 provided on the inlet 12 side of the port 6 and the catalyst body 9 provided on the outlet 13 side of the exhaust port 6 are respectively attached.

  In FIG. 2, the catalyst body 8 provided on the inlet side of the exhaust port and the catalyst body 9 provided on the outlet side of the exhaust port include a catalyst layer 23 formed on the surface of a structure 22 having a plurality of holes 21. It is configured.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the food 3 placed on the grill 2 is cooked by heating from the upper surface heating means 4 and the lower surface heating means 5. High-temperature oily smoke and odor components are generated from the heated food 3, move to the upper part of the cooking chamber 1, enter the inlet 12 of the exhaust port 6 provided in a part of the upper part of the cooking chamber 1, and enter the exhaust port 6. Passes through the catalyst body 8 provided on the inlet 12 side and passes through the catalyst body 9 provided on the outlet 13 side of the exhaust port 6. On the other hand, the catalyst body 8 provided on the inlet side of the exhaust port and the catalyst body 9 provided on the outlet side of the exhaust port are heated to a high temperature by the upper surface heating means 4, and the passing smoke and odor components are heated to a high temperature. The catalyst is decomposed by the effect of the catalyst and is discharged from the outlet 12 of the exhaust port 6 through the exhaust passage 7 without emitting oily smoke or odor to the outside.

(Experiment 1)
The heating cooker of FIG. 1 was used as the heating cooker of the present invention. The heating cooker 1A of the present invention is used as a catalyst body of a deodorizing apparatus on the surface of a honeycomb structure of 300 cells per inch made of fibrous ceramic, on an oxide carrier layer mainly composed of aluminum, and on the surface of the carrier layer. A catalyst body composed of a catalyst layer composed of supported platinum was used, and a sheathed heater was used as the upper surface heating means and the lower surface heating means. As a comparison with the conventional example, the heating cooker of FIG. 7 was used. The same catalyst body as 1A was used as the catalyst of the conventional cooking device 1B.

  The heating cookers 1A and 1B were evaluated using the following means. Four sword fish were placed in the cooking chamber of the heating cooker, and the hydrocarbon concentration was measured as the total amount of odor components discharged from the exhaust port from the start of cooking until the end of cooking at every elapsed time. The results are shown in FIG.

  As can be seen from FIG. 3, the cooking device 1A of the present invention has a lower concentration of discharged hydrocarbons than the conventional cooking device 1B. In particular, the heating cooker 1A of the present invention has a low hydrocarbon concentration even when the most oily smoke or odor is generated at the end of cooking, and the difference from the conventional heating cooker 1B is clear. Thereby, it turns out that the performance of the cooking device of the present invention is higher than that of the conventional cooking device even when the generation amount of oily smoke and odor is large, and can process many oily smoke and odor components.

(Experiment 2)
The heating cooker of FIG. 1 was used as the heating cooker of the present invention. The heating cooker 2A has an oxide carrier layer mainly composed of aluminum and a catalyst layer made of platinum supported on the surface of the carrier layer on the surface of a honeycomb structure of 300 cells per inch as a catalyst body of the deodorization apparatus. The formed catalyst body was used, and a sheathed heater was used as the upper surface heating means and the lower surface heating means.

  About the heating cooker 2A, the structure was changed to ceramic, fibrous ceramic, and metal, and evaluation was performed using the following means. Put 4 sword fish into the cooking chamber of the heating cooker, measure the hydrocarbon concentration as the total amount of odorous components discharged from the exhaust port from the start of cooking 9 minutes to the end of cooking (19 minutes from the start), and calculate the average value for 10 minutes Asked. The results are shown in Table 1.

  As can be seen from Table 1, when the cooking device 2A of the present invention is used, the use of fibrous ceramics as the structure increases the surface area of the catalyst, so that the catalytic treatment capacity is high, and the hydrocarbons that are exhausted odor components. It can be seen that the concentration is low. In addition, it can be seen that if a metal is used as the structure, since the heat conduction is high and the temperature rises quickly, the catalyst treatment capacity is high and the concentration of hydrocarbons that are exhausted odor components is low. Thereby, it turns out that the heating cooker of this invention can process many oily smoke and an odor component by using a ceramic, a fibrous ceramic, and a metal as a structure.

(Experiment 3)
The heating cooker of FIG. 1 was used as the heating cooker of the present invention. The heating cooker 3A is supported on the surface of a honeycomb structure of 300 cells per inch made of fibrous ceramic as a catalyst body, an oxide carrier layer mainly composed of barium, cerium and aluminum, and the surface of the carrier layer. The catalyst body made of the noble metal was used, and a sheathed heater was used as the upper surface heating means and the lower surface heating means.

  About the heating cooker 3A, the catalyst was changed into platinum, palladium, ruthenium, and rhodium, and evaluation was performed using the following means. Put 4 sword fish into the cooking chamber of the heating cooker, measure the hydrocarbon concentration as the total amount of odorous components discharged from the exhaust port from the start of cooking 9 minutes to the end of cooking (19 minutes from the start), and calculate the average value for 10 minutes Asked. The results are shown in Table 2.

  As is apparent from Table 2, it can be seen that if the heating cooker 3A of the present invention is used, the concentration of hydrocarbons, which are odorous components discharged if noble metal is used as the catalyst, is low. In particular, when platinum or palladium is used, its activity is high and the concentration of hydrocarbons is low. Thereby, it turns out that the heating cooker of this invention can process many oily smoke and an odor component by using the noble metal of platinum, palladium, ruthenium, and rhodium as a catalyst.

(Experiment 4)
The heating cooker of FIG. 1 was used as the heating cooker of the present invention. The heating cooker 4A has a catalytic structure made of an oxide carrier layer mainly composed of aluminum and platinum supported on the surface of the carrier layer on the surface of a honeycomb structure of 300 cells per inch made of fibrous ceramic as an odor removing means. Using a medium, a sheathed heater was used as the upper surface heating means and the lower surface heating means.

  For the heating cooker 4A, the temperature of the catalyst body was changed to 150, 200, 400, 600, 800, and 1000 ° C., and evaluation was performed using the following means. Put 4 sword fish into the cooking chamber of the heating cooker, measure the hydrocarbon concentration as the total amount of odorous components discharged from the exhaust port from the start of cooking 9 minutes to the end of cooking (19 minutes from the start), and calculate the average value for 10 minutes I asked. The results are shown in Table 3.

  As is apparent from Table 3, when the cooking device 4A of the present invention is used, it can be seen that the higher the temperature of the catalyst body, the lower the concentration of hydrocarbons, which are odorous components discharged. In addition, when the temperature of the catalyst body is 1000 ° C. or higher, the noble metal catalyst is agglomerated, which is not suitable in terms of performance. Thereby, it turns out that the heating cooker of this invention can process many oily smoke and odor components by making the temperature of a catalyst body into 200-1000 degreeC, desirably 400-600 degreeC.

(Embodiment 2)
4 and 5 are cross-sectional views of the catalyst body in the second embodiment of the present invention.

  In FIG. 4, the catalyst body 46 provided on the inlet side of the exhaust port is formed on the surface of the structure 44 that gradually decreases as the plurality of holes 41 move from the inlet side 42 of the exhaust port toward the outlet side 43 of the exhaust port. The catalyst layer 45 is formed.

  In FIG. 5, the catalyst body 56 provided on the inlet side of the exhaust port and the catalyst body 57 provided on the outlet side of the exhaust port have a plurality of holes 51 from the inlet side 52 of the exhaust port toward the outlet side 53 of the exhaust port. Accordingly, the catalyst layer 55 is formed on the surface of the structure 54 that gradually decreases.

  The heating cooker 5A in the present embodiment uses the catalyst body 46 of FIG. 4 instead of the catalyst body 8 provided on the inlet side of the exhaust port in FIG. 5 was used instead of the catalyst body 8 provided on the inlet side of the exhaust port in FIG. 1, and the catalyst body 57 of FIG. 5 was used instead of the catalyst body 9 provided on the outlet side of the exhaust port in FIG. The other configurations, operations, and actions are the same as those of the cooking device 11 in the first embodiment.

  The heating cookers 5A and 6A of the present invention are made of a catalyst layer of a deodorizing device, and a support layer of an oxide mainly composed of aluminum on a surface of a structure made of fibrous ceramic, and platinum supported on the surface of the support layer. A catalyst body composed of the configured catalyst layer was used, and a sheathed heater was used as the upper surface heating means and the lower surface heating means.

  The heating cookers 5A and 6A were evaluated using the following means. Put 4 sword fish into the cooking chamber of the heating cooker, measure the hydrocarbon concentration as the total amount of odorous components discharged from the exhaust port from the start of cooking 9 minutes to the end of cooking (19 minutes from the start), and calculate the average value for 10 minutes Asked. The results are shown in Table 4.

  As is apparent from Table 4, when the heating cooker 5A of the present invention is used, the structure of the catalyst body provided on the inlet side of the exhaust port becomes gradually smaller as the plurality of holes go from the inlet to the outlet. Since it is set as the structure, when air containing oily smoke or odor generated in the cooking chamber enters the catalyst body, the possibility of coming into contact with the wall surface of the hole of the structure body is increased. Therefore, the air passing through without contact with the catalyst layer is reduced, and most of the air containing smoke and odor generated in the cooking chamber comes into contact with the catalyst layer. It can be seen that the concentration is low. Further, if the heating cooker 6A of the present invention is used, a plurality of holes are formed in the catalyst body structure provided on the inlet side of the exhaust port and the catalyst body structure provided on the outlet side of the exhaust port. Since it becomes the structure which becomes small gradually as it goes to an exit from, when the air containing the oil smoke and odor which arose in the cooking chamber entered the catalyst body, possibility that it will contact the wall surface of the hole of a structure becomes high. Therefore, the air passing through without contact with the catalyst layer is reduced, and most of the air containing smoke and odor generated in the cooking chamber comes into contact with the catalyst layer. It can be seen that the concentration is low. Thus, the heating cooker of the present invention has a structure in which the plurality of holes gradually become smaller toward the outlet with respect to the inlet of the exhaust port as the structure of the catalyst body provided on the inlet side of the exhaust port, or The structure of the catalyst body provided on the inlet side and the structure of the catalyst body provided on the outlet side of the exhaust port are configured so that a plurality of holes gradually become smaller from the inlet of the exhaust port toward the outlet. It turns out that many oily smoke and odor components can be processed.

(Embodiment 3)
FIG. 6 shows a cross-sectional view of the catalyst body in the third embodiment of the present invention.

  In FIG. 6, the catalyst body 66 provided on the inlet side of the exhaust port is formed on the surface of the structure 64A that gradually decreases as the plurality of holes 61A move from the inlet side 62 of the exhaust port toward the outlet side 63 of the exhaust port. The catalyst layer 65A is configured. Further, the catalyst body 67 provided on the outlet side of the exhaust port is formed on the surface of the structure 64B that gradually increases as the plurality of holes 61B move from the inlet side 62 of the exhaust port toward the outlet side 63 of the exhaust port. The catalyst layer 65B is used.

  The heating cooker 7A in the present embodiment uses the catalyst body 66 of FIG. 6 in place of the catalyst body 8 provided on the inlet side of the exhaust port in FIG. 1, and the outlet side of the exhaust port in FIG. The catalyst body 67 of FIG. 6 is used instead of the catalyst body 9 provided in FIG. 6, and the other configuration, operation, and action are the same as those of the heating cooker 11 in the first embodiment.

  The heating cooker 7A of the present invention is composed of an oxide carrier layer mainly composed of aluminum and platinum supported on the surface of the carrier layer on the surface of the structure made of fibrous ceramic as a catalyst body of the deodorization apparatus. A catalyst body composed of the catalyst layer was used, and a sheathed heater was used as the upper surface heating means and the lower surface heating means.

  The heating cooker 7A was evaluated using the following means. Put 4 sword fish into the cooking chamber of the heating cooker, measure the hydrocarbon concentration as the total amount of odorous components discharged from the exhaust port from the start of cooking 9 minutes to the end of cooking (19 minutes from the start), and calculate the average value for 10 minutes Asked. The results are shown in Table 5.

  As apparent from Table 5, when the heating cooker 7A of the present invention is used, the structure of the catalyst body provided on the inlet side of the exhaust port becomes gradually smaller as the plurality of holes move from the inlet to the outlet. Since it is set as the structure, when air containing oily smoke or odor generated in the cooking chamber enters the catalyst body, the possibility of coming into contact with the wall surface of the hole of the structure body is increased. In addition, since the structure of the catalyst body provided on the outlet side of the exhaust port is configured to gradually increase as the plurality of holes move from the inlet port to the outlet port, air containing oily smoke or odor has entered the catalyst body. Occasionally, the air flow rate is reduced where the hole is large, and the possibility of contact with the wall surface of the hole in the structure increases. Therefore, the air passing through without contact with the catalyst layer is reduced, and most of the air containing smoke and odor generated in the cooking chamber comes into contact with the catalyst layer. It can be seen that the concentration is low. Thus, the heating cooker according to the present invention is configured such that the structure of the catalyst body provided on the inlet side of the exhaust port becomes gradually smaller as the plurality of holes move from the outlet port to the outlet, and further the outlet of the exhaust port. It can be seen that a larger number of oil smoke and odor components can be treated by configuring the structure of the catalyst body provided on the side to gradually increase as the plurality of holes move from the inlet to the outlet.

  As described above, the heating cooker according to the present invention includes a cooking chamber for storing the food placed on the grill, upper surface heating means for heating the upper surface of the food, and the lower surface of the food under the grill. The cooking material is heated by the lower surface heating means for heating from the top, and the catalyst body is provided on the inlet side and the outlet side of the exhaust port provided in a part of the upper part of the cooking chamber. The two catalyst bodies are configured by a catalyst layer formed on the surface of a structure having a plurality of holes. If it is such a structure, it can apply irrespective of the system of a cooking device especially, and can also be applied to a large sized cooking device.

The block diagram which shows the structure of the heating cooker in Embodiment 1 of this invention. Sectional drawing of the catalyst body in Embodiment 1 of this invention The graph which shows the hydrocarbon concentration of the heating cooker in Embodiment 1 of this invention Sectional drawing (1) of the catalyst body in Embodiment 2 of this invention Sectional drawing (2) of the catalyst body in Embodiment 2 of this invention Sectional drawing of the catalyst body in Embodiment 3 of this invention Configuration diagram showing the configuration of a conventional cooking device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cooking chamber 2 Grilling net 3 Cooked food 4 Upper surface heating means 5 Lower surface heating means 6 Exhaust port 7 Exhaust passage 8, 46, 56, 66 Catalyst body provided on the inlet side of the exhaust port 9, 57, 67 Outlet side of the exhaust port Catalyst body 10 receiving tray 11 heating cooker 12 exhaust port inlet 13 exhaust port outlet 21, 41, 51, 61A, 61B hole 22, 44, 54, 64A, 64B structure 23, 45, 55, 65A, 65B Catalyst layer 42, 52, 62 Inlet side of exhaust port 43, 53, 63 Outlet side of exhaust port

Claims (7)

A cooking chamber for storing the food placed on the grill, an upper surface heating means for heating the upper surface of the food, a lower surface heating means for heating the lower surface of the food from below the grill, and the cooking chamber An exhaust port provided in a part of the upper portion of the gas chamber, an exhaust passage passing from the exhaust port to above the cooking chamber, a catalyst body provided on the inlet side of the exhaust port, and provided on the outlet side of the exhaust port A cooking device comprising a catalyst body, wherein there is a space between the two types of catalyst bodies, and the catalyst body comprises a catalyst layer formed on the surface of a structure having a plurality of holes. A cooker with a configuration. The cooking device according to claim 1, wherein the structure of the catalyst body provided on the inlet side of the exhaust port is configured such that the plurality of holes gradually become smaller from the inlet to the outlet of the exhaust port. The cooking device according to claim 1, wherein the structure is configured such that the plurality of holes gradually become smaller from the inlet to the outlet of the exhaust port. The structure of the catalyst body provided on the inlet side of the exhaust port is configured so that the plurality of holes gradually become smaller from the inlet of the exhaust port toward the outlet, and the structure of the catalyst body provided on the outlet side of the exhaust port has a plurality of structures. The cooking device according to claim 1, wherein the holes gradually increase from the inlet to the outlet of the exhaust port. The cooking device according to any one of claims 1 to 4, wherein the structure is made of at least one of ceramic, fibrous ceramic, or metal. The catalyst layer is composed of at least one of a support layer mainly composed of barium, cerium, and aluminum and at least one of platinum, palladium, ruthenium, and rhodium supported on the surface of the support layer. The heating cooker described in 1. The cooking device according to any one of claims 1 to 6, wherein the catalyst body has a temperature of 200 ° C or higher and 1000 ° C or lower.