JPH10201632A - Catalytic combustion heat retaining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a lunch container at an optimum temperature for a long time by greatly improving the heat retaining performance of the lunch container. SOLUTION: This device includes a stand 7, which is provided above and separate from a catalytic combustion part 4 and on which a rice container 5 for heat retention and a container 6 for dishes and soup or the like are placed, and an outer frame 1 covering them. An intake port 8 through which oxygen is supplied to the catalytic combustion part 4 is formed in the lower part of the side or bottom face of the outer frame 1, and passages through which the exhaust gas of combustion flows are formed between the stand 7 and the catalytic combustion part 4 and between the outer frame 1, the rice container 5, and the container 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalytic combustion warming apparatus using catalytic combustion heat as a heat source.

[0002]

2. Description of the Related Art Heretofore, there has been a lunch jar which is used while keeping a heat, in which a lunch box is put in a container filled with a heat insulating material. Styrofoam and vacuum containers are used for this heat insulating material.

[0003]

However, it is difficult to keep the initial heat retention state by the above-mentioned conventional method because of the heat insulation efficiency. Therefore, in many cases, it was not possible to keep the original taste when the food was cooled down. In addition, meal times may be delayed due to various circumstances, and the situation may become even worse. Such a type is often carried and cannot be easily provided with an electric heater or the like, and thus needs to be cordless.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a catalytic combustion warming apparatus according to the present invention comprises a fuel tank for storing fuel gas, and an oxidative combustion reaction between vaporized fuel gas and air. A catalytic combustion section, an ignition device for flying sparks to the catalytic combustion section, a table for mounting a container provided on the upper part of the catalytic combustion section, and an outer frame body covering these, An intake port for supplying oxygen to the catalytic combustion section is provided at a lower side surface or a bottom surface of the outer frame body, and a passage through which combustion exhaust gas flows is provided at least between the table and the catalytic combustion section and between the outer frame body and the container. It is made.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a fuel tank for storing a fuel gas, a catalytic combustion section for causing an oxidative combustion reaction between vaporized fuel gas and air, and a spark in the catalytic combustion section. An igniter for blowing off the catalyst, a mounting table for mounting a container provided on the upper part of the catalytic combustion section, and an outer frame body covering these, and the catalytic combustion is provided on a lower side surface or a bottom surface of the outer frame body. By providing an intake port for supplying oxygen to the section and forming a passage through which exhaust gas for combustion flows at least between the table and the catalytic combustion section and between the outer frame and the container, heat of the combustion section is reduced to rice. Since the exhaust gas is exhausted while licking the bottom and side walls of the container without directly heating the container or containers such as side dishes and soup, the temperature can be kept uniform.

According to the second aspect of the present invention, since the placing table has a gap through which the exhaust gas passes, heat of the exhaust gas passes through the gap and the container can be uniformly heated.

According to the third aspect of the present invention, since the water container is provided in the vicinity of the combustion section, it is possible to provide appropriate moisture so as not to cause excessive drying during heat retention.

The invention according to claim 4 has a temperature sensor at a contact portion between the table and the container, and has a mechanism for controlling catalytic combustion by a signal of the sensor. The temperature can be maintained and the best taste can be ensured at any time.

According to the fifth aspect of the present invention, the passage through which the exhaust gas flows is divided so that the flow rate of exhaust gas to the container such as side dishes or soup can be controlled, so that it is possible to easily cope with side dishes not particularly desired to be heated. You can do it. That is, a different heat retention temperature can be easily set for each container.

In the invention according to claim 6, since the distance between the placing table and the combustion section can be arbitrarily adjusted, the temperature can be adjusted without a complicated structure for controlling combustion.

[0011]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG. In the figure, reference numeral 1 denotes an outer frame body for accommodating various components therein, 2 denotes a fuel tank, and 3 denotes a catalytic combustion section for burning a vaporized fuel gas by a catalytic reaction. Reference numeral 4 denotes an ignition device for blowing sparks to the catalytic combustion unit, and a table for placing a rice container 5 for keeping heat and a container 6 for side dishes, which are provided separately from the catalytic combustion unit 4 above the catalytic combustion unit 4. 7 and an outer frame 1 that covers them. An intake port 8 for supplying oxygen to the catalytic combustion unit 4 is provided on the lower side or bottom surface of the outer frame 1, and between the table 7 and the catalytic combustion unit 4. A passage 9 through which combustion exhaust gas flows is formed between the outer frame 1, the rice container 5, and the container 6. Reference numeral 10 denotes a lid of the outer frame 1, and an exhaust port 11 is provided in a peripheral portion thereof.

Next, the operation of this embodiment will be described. First, in order to keep a lunch lunch meal warm, rice cooked and cooked side dishes are put into the rice container 5 and the side dish container 6. After filling the fuel tank 2 with the vaporized fuel gas,
When the catalyst is burned by the spark generated by the ignition device 4 to keep the temperature in a warm state, the containers are set. By the time the exhaust gas passes through the passage and is discharged from the exhaust port from the catalytic combustion unit 3, the thermal energy of the exhaust gas supplies heat to the container and maintains the temperature. At this time, the air required for combustion is sucked from the intake port 8 and is sufficiently mixed with the vaporized fuel gas before being supplied to the catalyst in the catalytic combustion section 8.

With this configuration, the heat source uses catalytic combustion heat that does not form a flame, so that it does not blow out.
Since the intake port 8 and the exhaust port 10 are separated, it is possible to prevent exhaust gas from being re-inhaled and causing incomplete combustion.

The heat retention temperature can be arbitrarily adjusted by adjusting the power of catalytic combustion, and ON / OFF control can be performed by a control device such as a bimetal.

[0015] It is also possible to increase the power before meals to get hot. (Embodiment 2) Next, a second embodiment of the present invention will be described.

In FIG. 2, since the placing table 7 forms the gap 12 through which the exhaust gas passes, the exhaust gas can easily flow uniformly without being dispersed, and uneven heat retention can be prevented. When there is no gap 12, the exhaust flow is
Was passing between.

(Embodiment 3) Next, a third embodiment of the present invention will be described.

In FIG. 3, the water container 1 is located near the combustion section 3.
3 which is vaporized by the heat of the catalytic combustion unit 3. As a result, it is possible to provide the containers 5 and 6 with a suitable moisture level, and it is possible to prevent the moisture from flowing out due to the heat retention and excessive drying that significantly reduces the taste. The containers 5 and 6 are provided with gaps or small holes through which gas passes, and moist air containing moisture easily flows into the inside. When a container is not used, it can be used as an insulated steamer for meat buns and the like.

(Embodiment 4) Next, a fourth embodiment of the present invention will be described.

In FIG. 3, a temperature sensor 14 is provided at a contact portion 16 between the table 7 and the container 6, and a mechanism for controlling catalytic combustion in accordance with a signal from the sensor 14 has a mechanism for keeping heat in accordance with the contents of the meal. The temperature can be accurately maintained. The contact portion 16 is closest to the temperature inside the container.

(Embodiment 5) Next, a fifth embodiment of the present invention will be described.

In FIG. 4, the passage 9 through which the exhaust gas flows is divided by a dividing wall 15 so that the amount of exhaust gas such as side dishes and soup to the container 6 can be controlled.
And the temperature of the container 6 can be individually set, and the taste can be maintained even in the case of a side dish that does not require the heat retention. The dividing wall 16 in the figure is narrowed inward, and the exhaust gas flowing into the rice container 5 is largely cut and guided to the side dish container, so that the temperature difference of the container can be easily obtained.

(Embodiment 6) Next, a sixth embodiment of the present invention will be described.

In FIG. 5, since the distance between the placing table 7 and the combustion section 3 can be adjusted arbitrarily, the temperature keeping temperature can be set with a very simple structure without taking any structure such as temperature control. . Reference numeral 17 denotes an adjusting table on which the placing table 7 is placed. Reference numeral 18 denotes an adjustment knob, and the adjustment table 17 can be moved up and down by this knob so that the heat retaining temperature can be adjusted.

[0025]

As described above, according to the first aspect of the present invention, since the heat source utilizes catalytic combustion heat that does not form a flame, there is no blow-out, and the intake port and the exhaust port are separated. Therefore, it is possible to prevent the exhaust gas from being re-inhaled and to cause incomplete combustion, and it is possible to efficiently supply the heat of the exhaust gas to the container. Further, the heat retention temperature can be arbitrarily adjusted by adjusting the power of catalytic combustion.

In addition, it is possible to increase the power before meals by heating it up, and to use the heat of catalytic combustion during commuting, commuting to school, or when traveling by car, so that heat can be kept safely. It is.

According to the second aspect of the present invention, since the placing table forms a gap through which the exhaust gas passes, the exhaust gas is made uniform by the gap. In other words, the exhaust gas is easy to flow uniformly without being unevenly dispersed, and the heat retention of the container is not uneven.

According to the third aspect of the present invention, since the water container is provided in the vicinity of the combustion section, the water is vaporized by the heat of the catalytic combustion section. As a result, appropriate humidity can be given to the container, and it is possible to prevent excessive drying, which causes moisture to stop due to heat retention and significantly reduces the taste.

According to the fourth aspect of the present invention, since a temperature sensor is provided at a contact portion between the table and the container and a mechanism for controlling catalytic combustion by a signal of the sensor is provided, the contents of the meal are provided. It is possible to accurately maintain the heat retention temperature in accordance with the above. For example, in the case of sushi, etc., the temperature may be slightly warm. For curry, beef bowl, etc., a relatively high heat retention temperature is suitable.

According to the fifth aspect of the present invention, the dividing wall is provided in the passage through which the exhaust gas flows. Because it is configured to control the exhaust flow rate of containers such as side dishes and soups, it is possible to set the heat retention temperature of the container and the container individually, for example, in the case of side dishes that do not require much heat insulation such as vegetables Without sacrificing the taste. In addition, you can easily set the hot rice and the side meals to the warm and desired temperature.

According to the sixth aspect of the present invention, since the distance between the placing table and the combustion section can be arbitrarily adjusted, the temperature keeping temperature is very simple without a complicated structure such as temperature control. Can be set.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a catalytic combustion warming device showing a first embodiment of the present invention.

FIG. 2 is a plan view of a table of the catalytic combustion warming apparatus.

FIG. 3 is a sectional view of a main part of a catalytic combustion warming device showing a third embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a catalytic combustion warming device showing a fourth embodiment of the present invention.

FIG. 5 is a sectional view of a main part of a catalytic combustion warming apparatus showing a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer frame 2 Fuel tank 3 Catalytic combustion part 7 Placement stand 8 Inlet 9 Passage 10 Lid 11 Exhaust pan 12 Gap 13 Water container 14 Temperature sensor 15 Dividing wall 16 Contact part 18 Adjustment knob

Claims (6)

[Claims] 1. A fuel tank for storing fuel gas, a catalytic combustion unit for causing an oxidative combustion reaction between vaporized fuel gas and air, an ignition device for blowing a spark to the catalytic combustion unit, and the catalyst A pedestal for mounting a container provided on the upper part of the combustion part, and an outer frame body that covers them are provided, and an intake port for supplying oxygen to the catalytic combustion part is provided at a lower side surface or a bottom surface of the outer frame body. And a catalyst combustion warming device comprising a passage formed at least between the holder and the catalytic combustion portion and between the outer frame and the container. 2. The catalytic combustion warming device according to claim 1, wherein the placing table has a gap through which the exhaust gas passes. 3. The catalytic combustion warming apparatus according to claim 1, further comprising a water container near the combustion section. 4. The catalytic combustion warming device according to claim 1, further comprising a temperature sensor, wherein the catalytic combustion is controlled by an output of the temperature sensor. 5. The catalytic combustion warming device according to claim 1, further comprising a partition wall for exhaust gas for controlling the flow rate of exhaust gas to the container. 6. The catalytic combustion warming device according to claim 1, wherein the size of the passage of the exhaust gas between the placing table and the combustion section can be adjusted.