JPH10267281A - Catalytic combustion heating cooking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform high-efficient heating cooking even when the size of a cooking apparatus is different, in a catalytic combustion heating cooking apparatus utilizing heat generated by effecting catalytic combustion of liquefied fuel gas. SOLUTION: Catalysts 4a and 4b to effect combustion of fuel air mixture air of fuel gas, stored in a fuel tank 1, and air through oxidation reaction are divided into a plurality of sections and arranged at a catalytic combustion part 3. A shield body 9 to control the feed of fuel gas to the catalysts 4a and 4b is provided. Cooking containers 8a and 8b to be heated are placed on heating plates 6 and 6a heated by heat from the catalytic combustion part 3. The shield body 9 is operated according to the sizes of the cooking containers 8a and 8b to select the combustion ranges of the catalysts 4a and 4b to effect combustion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalytic combustion heating cooker for cooking on a heating plate by utilizing heat obtained by catalytically burning a liquefied fuel gas.

[0002]

2. Description of the Related Art Conventional heating cookers generally include an electric heating cooker having a heater using a commercial power supply and a flame-burning stove using a gas cylinder as fuel.

[0003]

In the case of such a conventional heating cooker, in the case of an electric heating type, since a commercial power supply voltage is applied to the heater, it is necessary to provide a power cord and connect the power supply to the commercial power supply. However, there is a problem that it cannot be used for outdoor use without power supply such as camping.

[0004] Further, although a stove using a gas cylinder can be used outdoors, the range in which flames are generated is limited, so that when cooking in a cooking container having a large bottom area, the entire bottom surface is made uniform. It is difficult to heat to a large extent, the temperature difference is large and cooking takes time, and the heat transfer efficiency to the cooking vessel is poor because it is easily affected by wind and the like.
There has been a problem that fuel gas is wasted and the usability is poor, for example, the flame goes out during use.

[0005] The catalytic combustion heating cooker of the present invention can be used outdoors without a power supply, and can efficiently cook even when the size of the cooking container is different.

[0006]

According to the present invention, a catalyst for oxidizing and burning a fuel gas is divided into a plurality of catalysts, and the catalyst is installed in a catalyst combustion section. A shield for controlling the supply of the catalyst is provided, and the shield is operated in accordance with the size of the cooking vessel to be heated to select a combustion range of the catalyst and burn.

[0007] This makes it possible to be used outdoors without a power source, and to vary the combustion range of the catalytic combustion section according to the size of the cooking vessel heated by the catalytic combustion section, so that cooking can be performed efficiently. can do.

[0008]

DETAILED DESCRIPTION OF THE INVENTION According to the first aspect of the present invention, a fuel tank for storing a fuel gas, a vaporizing section for vaporizing the fuel gas and mixing it with air, and a gas supplied from the vaporizing section are provided. A catalyst for oxidizing and burning the mixed gas, a catalyst combustion section in which the catalyst is divided into a plurality of sections, a heating plate heated by the catalyst combustion section, and a supply of fuel gas to the catalyst. A shield and an operation unit for operating the shield are provided, and the burning range of the catalyst can be selected by the shield. The heater can be used outdoors without a power supply and is heated. The combustion portion of the catalytic combustion section can be adjusted according to the size of the bottom area of the cooking vessel, and the bottom surface of the cooking vessel can be efficiently and uniformly heated.

According to a second aspect of the present invention, there is provided a fuel tank for storing a fuel gas, a vaporizing section for vaporizing the fuel gas and mixing it with air, and oxidizing a mixed gas supplied from the vaporizing section. A catalyst to be reacted and burned; a catalyst burning section provided by dividing the catalyst into a plurality of parts; a heating plate heated by the catalyst burning section; and a shield for opening and closing a fuel gas supply path to the catalyst. Wherein the shield controls the supply of fuel gas to the catalyst in conjunction with the placement of the cooking vessel on the heating plate so that the combustion range of the catalyst can be selected. The operation of placing the cooking vessel on the heating plate, the shield works in accordance with the size of the bottom area, and the combustion part of the catalytic combustion part can be adjusted, so that the user has to manually operate it. Can be omitted to improve usability.

According to a third aspect of the present invention, in the second aspect of the present invention, the shield is urged by a spring so that its upper end projects from the upper surface of the heating plate. The cooking vessel is placed on the enclosed heating plate to heat it.When the cooking vessel is small, the cooking vessel is placed inside so as to be surrounded by the shield, The body can partially burn only the lower part of the cooking container without descending, preventing unnecessary consumption of fuel gas and efficiently cooking, and surrounding the cooking container with a shield. Therefore, the heating efficiency of the container can be increased.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIGS. 1 and 2, a fuel tank 1 stores a fuel gas such as a liquefied petroleum gas, and the fuel gas in the fuel tank 1 is vaporized by a vaporizing section 2. A mixed gas with air is supplied to the catalytic combustion unit 3. The catalytic combustion section 3 is provided with a catalyst 4 for oxidizing and burning a mixed gas of fuel gas and air.

The catalyst 4 is formed by depositing a noble metal such as platinum on a metal plate, and has a first catalyst 4 disposed at the center.
a and a second outside of the first catalyst 4a so as to surround the first catalyst 4a.
The catalyst 4b is disposed, and a gap 5 is provided between the two catalysts 4a and 4b so as to be divided into a plurality of catalysts 4b.

A heating plate 6 having a flat upper surface disposed above the catalytic combustion section 3 is formed separately from and opposed to the catalysts 4a and 4b so as to be heated by the heat from the catalytic combustion section 3. A gap 7 is provided between a heating plate 6a having a flat upper surface, which is located at the center and faces the catalyst 4a, and a heating plate 6 which is larger than the heating plate 6a and faces the catalyst 4b.

The cooking vessel 8a is placed on the heating plate 6 to perform heating cooking. In this case, a cooking container 8a having a flat bottom is suitable, and a cooking container 8b having a different size can be arbitrarily used depending on the application, and the cooking container 8b is a heating plate 6a.
Place on top.

The shield 9 is provided in a gap 5 formed between the first catalyst 4a and the second catalyst 4b so as to be movable up and down.
It is urged upward by 0 and has an operation unit 11 for operating the shield 9. Then, the shield 9 can be held at each position where the shield 9 has been moved up and down by the operation unit 11, and the supply of the fuel gas to the catalyst 4 is controlled.
The catalyst 4a or the catalysts 4a and 4b can be selectively burned.

The operation of the above configuration will be described. The fuel gas in the fuel tank 1 is vaporized by opening an opening / closing device (not shown) provided in the vaporizing section 2, and a mixed gas with air is supplied to the catalytic combustion section 3. Supply. The fuel gas and the air are oxidized and reacted in the catalytic combustion section 3 to burn the catalyst 4, and the heat of the catalytic combustion heats the heating plate 6.

Therefore, since the heat source is the fuel gas in the fuel tank 1, it is possible to heat the food in the cooking containers 8a and 8b without connecting to a commercial power source. Cooking can be done. When the heating and cooking are completed, the supply of the fuel gas to the catalytic combustion unit 3 can be stopped by closing an opening / closing device (not shown).

When cooking is performed using a cooking container 8a large enough to cover substantially the entire upper surface of the heating plate 6, the operating portion 11 is lowered downward against the urging force of the spring 10, and The shield 9 located at 5 is held in a lowered state. The fuel gas supplied to the catalytic combustion unit 3 is
The catalyst is supplied to the entire area of the heating plates 6 and 6b to perform catalytic combustion, and the entire area of the heating plates 6 and 6a is heated to cook the food in the cooking vessel 8a.

When a relatively small cooking container 8b is used, the shield 9 located in the gap 5 is raised by the operation unit 11 to shut off the first catalyst 4a and the second catalyst 4b. Therefore, the fuel gas sent from the vaporizing section 2 into the catalytic combustion section 3 is supplied to the first catalyst 4a through the gas passage 12 formed by the shield 9 to perform catalytic combustion, and the cooking vessel 8b is mounted. Only the placed heating unit 6a can be heated. Since the gap 7 is provided between the heating unit 6a and the heating unit 6, it is possible to prevent the heat of the heating unit 6a from being taken away by the heating unit 6 and to heat the heating unit 6a efficiently. Consumption can be reduced.

(Embodiment 2) As shown in FIG.
Numeral 3 is urged upward by a spring 10 so that a part thereof protrudes above the heating plate 6, and the cooking container 8 b placed on the heating plate 6 a fits inside the protruding portion of the shield 13. In this case, the shield 13 is at the raised position, the fuel gas is supplied only to the catalyst 4a at the center, and only the heating plate 6a on which the cooking vessel 8b is placed is efficiently heated.

When the large cooking container 8a is placed, the shield 13 is pushed down against the urging force of the spring 10, and the inside of the catalytic combustion section 3 communicates with the catalyst 4a, 4a provided inside.
4b is supplied with the fuel gas so that the maximum combustion capacity can be obtained. Other configurations are the same as those in the first embodiment.

According to the above configuration, the shield 13 operates in conjunction with the size of the cooking containers 8a and 8b placed on the heating plate 6, and supplies the fuel gas to the catalysts 4a and 4b. To automatically change the combustion range of the catalysts 4a and 4b, and can omit the manual switching operation by the user, and ensure that the optimum combustion capacity for the cooking vessels 8a and 8b is not mistaken. Can be obtained.

When the cooking vessel 8b is placed and heated, the surroundings of the cooking vessel 8b can be covered with the projecting shield 13, and the shield 13 is located in the gap 7, so that The heat transfer from the heating plate 6a to the heating plate 6 can be reduced to improve the heating efficiency.

[0025]

As described above, according to the first aspect of the present invention, a fuel tank for storing a fuel gas, a vaporizing section for vaporizing the fuel gas and mixing it with air, A catalyst that oxidizes and reacts the mixed gas supplied from the catalyst, a catalyst combustion section in which the catalyst is divided and installed, a heating plate heated by the catalyst combustion section, A shield for controlling the supply and an operation unit for operating the shield are provided, and the combustion range of the catalyst can be selected by the shield, thereby enabling cooking and heating outdoors without a commercial power supply. At the same time, the catalytic combustion range can be varied according to the difference in the size of the bottom of the cooking vessel, and the cooking vessel can be uniformly and efficiently heated.

According to the second aspect of the present invention, a fuel tank for storing fuel gas, a vaporizer for vaporizing the fuel gas and mixing it with air, and a mixed gas supplied from the vaporizer are provided. A catalyst that is oxidized and burned, a catalyst combustion section in which the catalyst is divided and installed, a heating plate heated by the catalyst combustion section, and a shield that opens and closes a fuel gas supply path to the catalyst The shielding body controls the supply of the fuel gas to the catalyst in conjunction with the placement of the cooking vessel on the heating plate, so that the combustion range of the catalyst can be selected. By placing the on the heating plate, it is possible to change the catalytic combustion range by interlocking the shield according to the size of the bottom area, eliminating the need for manual operation by the user and improving usability. can do.

According to the third aspect of the present invention, the shield is urged by a spring so that the upper end thereof protrudes from the upper surface of the heating plate, and the cooking vessel is placed on the heating plate surrounded by the shield. When the cooking vessel placed on the heating plate is small, the cooking vessel is placed inside so as to be surrounded by the shielding body, so that the shielding body moves down It is possible to partially burn only the lower part of the cooking vessel without cooking, avoid unnecessary fuel gas consumption and cook efficiently, and heat the vessel because the cooking vessel is surrounded by a shield. Efficiency can be increased.

[Brief description of the drawings]

FIG. 1 is a side view showing a cross section of a main part of a catalytic combustion heating cooker according to a first embodiment of the present invention.

FIG. 2 is a top view showing a cross section of a main part of the catalytic combustion heating cooker.

FIG. 3 is a side view showing a cross section of a main part of a catalytic combustion heating cooker according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Vaporization part 3 Catalytic combustion part 4 Catalyst 6 Heating plate 9 Shield 11 Operation part

Claims (3)

[Claims] 1. A fuel tank for storing fuel gas, a vaporizer for vaporizing the fuel gas and mixing it with air, a catalyst for oxidizing a mixed gas supplied from the vaporizer and burning the mixture, and a catalyst for the catalyst Is divided into a plurality of sections, a catalytic combustion section, a heating plate heated by the catalytic combustion section, a shield for controlling supply of fuel gas to the catalyst, and an operation section for operating the shield. A catalytic combustion heating cooker provided with the shield so that the range of combustion of the catalyst can be selected by the shield. 2. A fuel tank for storing a fuel gas, a vaporizer for vaporizing the fuel gas and mixing it with air, a catalyst for oxidizing a mixed gas supplied from the vaporizer and burning the mixture, and a catalyst for the catalyst A catalytic combustion unit installed divided into a plurality, a heating plate heated by the catalytic combustion unit, and a shield for opening and closing a fuel gas supply path to the catalyst,
The above-mentioned shield controls the supply of fuel gas to the above-mentioned catalyst in conjunction with the placement of the cooking vessel on the heating plate, so that the range of combustion of the catalyst can be selected. 3. The shielding body is urged by a spring so that an upper end thereof protrudes from an upper surface of the heating plate, and the cooking container is placed on the heating plate surrounded by the shielding body to be heated. Item 3. A catalytic combustion heating cooker according to Item 2.