JP3533854B2 - Heating pot with heating function - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-retaining pot, and more particularly to a heat-retaining pot with a heating function, which is excellent in portability and can keep contents at a high temperature for a long time even outdoors.

[0002]

2. Description of the Related Art Conventionally, as a heat-insulating pot, one in which the container body is heat-insulated with glass wool or the like, or one in which the container body is constituted by a vacuum heat insulation double container is adopted. However, even with these heat-insulating containers, it is unavoidable that the temperature of the contents decreases with the passage of time. In particular, the temperature drop of the contents is remarkable in a heat insulation pot in which the container body is heat-insulated with glass wool. For this reason, a heat-retaining pot in which an electric heater is attached to the bottom of the container body to improve heat-retaining properties has been put into practical use. A heat-retaining pot in which an electric heater is attached to the bottom of the container body is satisfactory in heat retention, but it is difficult to secure a power source outdoors.

Therefore, a device as shown in FIG. 7 has been conventionally considered. That is, the gas cylinder 3 is attached to the fuel portion at the bottom of the case body 1 in which the container 2 for storing water is installed, the gas cylinder 3 is connected to the gas projecting nozzle 4 via a valve, and external air is introduced into the gas projecting nozzle 4. The mixing catalyst 5 is connected, the upper end of the mixing pipe 5 is guided to the combustion part provided above the fuel part, and the air-permeable oxidation catalyst 6 is arranged so as to surround the jet part of the upper end of the mixing pipe. Then, the ignition heater 7 is installed in the jet path of the mixed gas, the heat exchange plate 8 is installed on the outer periphery of the oxidation catalyst 6, and the upper surfaces of the heat exchange plate 8 and the oxidation catalyst 6 are placed on the bottom of the container 2. The heating unit is in contact with the heating unit, and the burning unit and the fuel unit are separated by a reflector 9 to form a pot.

Next, the operation will be described. Fuel gas is jetted and supplied to the oxidation catalyst 6 through the gas projecting nozzle 4 and the mixing pipe 5, and catalytic combustion is started by the action of the oxidation catalyst 6 based on the initial ignition. Due to the combustion heat, the oxidation catalyst 6 and heat exchange are performed. The heat is efficiently exchanged with the water in the container 2 through the plate 8 to heat or keep warm.

[0005]

However, in this pot, since the bottom of the pot is directly heated by the combustion heat, the combustion portion becomes large, and the entire pot becomes large. Further, the burning part and the pot are not separated from each other, and it is inconvenient to put or wash water in the pot.

Therefore, an object of the present invention is to provide a heat-retaining pot with a heating function which is constructed so that the heating device can be separated from the container.

[0007]

In order to solve the above problems, the present invention provides a heating device at the bottom of a container,
Gas ejection nozzle connected to the gas tank via an on-off valve
Consists of an air suction ejector, including combustion catalyst and ignition device
The combustion gas catalyst in the mixed gas outlet of the air suction ejector.
It penetrates and is located above the catalyst for combustion, and the mixed gas is placed on the catalyst.
Insulated pot with a heating function that flows from the
Yes, the mixed gas outlet of the air suction ejector is used as a combustion catalyst.
Lower the overall height of the heating device by positioning it above the
The heating device can be made compact and easy to carry.
Has the action of

[0008]

DETAILED DESCRIPTION OF THE INVENTION The invention of claim 1, wherein the present invention,
It is equipped with a heating device at the bottom of the container, and is composed of an air suction ejector including a gas ejection nozzle connected to a gas tank via an on-off valve, a combustion catalyst, and an ignition device. It is a heat-insulating pot with a heating function that penetrates the combustion catalyst and is located above the combustion catalyst to let the mixed gas flow in from above the catalyst.The mixed gas outlet of the air suction ejector is located above the combustion catalyst. By positioning the heating device, the height of the entire heating device can be reduced, and the heating device can be downsized and can be easily carried.

According to a second aspect of the present invention, the heating device comprises an air suction ejector including a gas injection nozzle connected to a gas tank via an on-off valve, a combustion catalyst, and an ignition device, and an opening of the heating device. Is equipped with a protective plate, the mixed gas outflow portion of the air suction ejector penetrates the combustion catalyst and is located above the combustion catalyst, and the mixed gas is introduced from above the catalyst. It is intended to be heated function insulation pot according to claim 1 wherein as the protective plate and the bottom of the vessel is in close contact, has an effect of enhancing the protection of critical parts and the durability of the heating device.

According to a third aspect of the present invention, the heating device comprises an air suction ejector including a gas ejection nozzle connected to a gas tank via an on-off valve, a combustion catalyst, and an ignition device. The mixed gas outlet is located above the combustion catalyst by penetrating the combustion catalyst, the mixed gas is introduced from the upper part of the catalyst, the exhaust gas is discharged from the lower part of the combustion catalyst, and the exhaust gas is blocked between the combustion catalyst and the gas tank. A heat plate is provided, and air is taken in through a space between the heat shield plate and the gas tank.
The heat-insulating pot with a heating function described in 2 has an effect of blocking heat from the heating device, suppressing an increase in temperature of the gas tank, and improving safety.

[0011]

EXAMPLES ( Reference Example ) A reference example of the present invention will be described below with reference to FIGS. FIG. 1 shows an overall configuration of a heat retaining pot with a heating function and a cross section of a heating device. FIG. 2 is a perspective view showing a method of connecting the container and the heating device.

Reference numeral 11 is a container for containing a liquid. A heating device 12 is provided below the bottom portion 13 of the container 11. The heating device 12 includes a gas tank 14, an opening / closing valve 15, a gas ejection nozzle 16, an air suction ejector 17, a combustion catalyst 18, and an ignition device 19. A connecting portion 20 is provided on the lower side surface of the container 11, and a connecting piece 21 is provided on the upper side surface of the heating device. Reference numeral 22 is a high voltage generator using a piezoelectric element. Reference numeral 23 is an on-off valve operation piece. Reference numeral 24 is an operation button for operating the high voltage generator 22.

Next, the operation will be described. When the heating device 12 is rotated with the connecting portion 20 aligned with the connecting piece 21, the container 1
1 and the heating device 12 are fixed. Heating device 1 for container 11
After fixing 2, the on-off valve 15 is opened by sliding the on-off valve operation piece 23 laterally, and the fuel gas is ejected from the gas ejection nozzle 16. The jetted fuel gas sucks in air by the air suction ejector 17, becomes a mixed gas, and flows to the upper portion of the combustion catalyst 18.

At this time, the bottom portion 13 of the container 11 is formed in a hemispherical shape, and the outlet of the air suction ejector 17 and the bottom portion 13 are formed.
An appropriate space is formed between them, and the pressure loss is reduced, so that air can be sufficiently sucked. Further, since the space becomes narrower toward the outer circumference, the mixed gas smoothly flows through the combustion catalyst 18 to the exhaust port 25. When the operation button 24 is pressed at the same time, the high voltage generator 22
At that time, a high voltage is generated and transmitted to an ignition device 19 provided downstream of the combustion catalyst 18, and a spark is generated there to ignite the mixed gas. Eventually, when the temperature of the combustion catalyst 18 rises to the temperature at which the catalyst can be burned due to the heat of the flame, the combustion shifts to catalytic combustion. The heat generated by the catalytic combustion is the bottom 13 of the container 11.
The temperature of the whole contents rises by heating. When extinguishing a fire,
When the on-off valve operation piece 23 is returned to the original position, the on-off valve 15 is closed. As described above, in this reference example , the container and the heating device can be separated.

Further, as shown in FIG. 3, a heat insulating material 26 is provided on the side of the container, and a heat insulating lid 27 is detachably attached to the bottom when the heating device 12 is separated. The heating device 12 is separated and the heat insulating cover 27
By attaching to the bottom portion 13 of the container 11, the contents can be kept at a high temperature for a long time.

(Embodiment 1 ) FIG. 4 shows an overall structure of a heat retaining pot with a heating function and a cross section of a heat source portion. 11 is a container. 12 is the bottom 1 of the container 11
3 is a heating device. The heating device 12 includes a gas tank 14, an opening / closing valve 15, a gas ejection nozzle 16, an air suction ejector 17, a combustion catalyst 18, and an ignition device 19. The mixed gas outflow portion 28 is the combustion catalyst 18
Is located above the combustion catalyst 18.

A connecting portion 20 is provided on the lower side surface of the container 11, and a connecting piece 21 is provided on the upper side surface of the heating device. Reference numeral 22 is a high voltage generator using a piezoelectric element. Reference numeral 23 is an on-off valve operation piece. Reference numeral 24 is an operation button for operating the high voltage generator 22. When the heating device 12 is rotated with the connecting portion 20 aligned with the connecting piece 21, the container 11
And the heating device 12 is fixed. Heating device 12 in container 11
After fixing, the opening / closing valve 15 is opened by sliding the opening / closing valve operating piece 23 in the lateral direction, and the fuel gas is ejected from the gas ejection nozzle 16. The jetted fuel gas sucks in air by the air suction ejector 17 to become a mixed gas, and the combustion catalyst 1
Flows to the top of 8.

At this time, the bottom portion 13 of the container 11 is formed in a hemispherical shape, and the outlet of the air suction ejector 17 and the bottom portion 13 are formed.
An appropriate space is formed between them, and the pressure loss is reduced, so that air can be sufficiently sucked. Further, since the space becomes narrower toward the outer circumference, the mixed gas smoothly flows through the combustion catalyst 18 to the exhaust port 25.

At the same time, when the operation button 24 is pressed, a high voltage is generated by the high voltage generator 22 and transmitted to the ignition device 19 provided downstream of the combustion catalyst 18, where a spark is generated and mixed gas is generated. Is ignited. Eventually, when the temperature of the combustion catalyst 18 rises to the temperature at which the catalyst can be burned due to the heat of the flame, the combustion shifts to catalytic combustion. The heat generated by the catalytic combustion heats the bottom portion 13 of the container 11 and the temperature of the entire contents rises. When extinguishing the fire, the on-off valve 15 is closed by returning the on-off valve operation piece 23 to its original position.

Further, in order to suck the air with the jetting force of the fuel gas, it is necessary to lengthen the ejector. Therefore, in the system in which the mixed gas is introduced from below the combustion catalyst 18, the height of the combustion section is increased. And the combustion section becomes large.
However, if the mixed gas is introduced from the upper portion of the combustion catalyst 18, the combustion portion can be made lower by the thickness of the combustion catalyst 18. As described above, in this embodiment, the mixed gas outflow portion 2
Since 8 is positioned above the combustion catalyst 18 by penetrating the combustion catalyst 18, the combustion section can be made low.

(Embodiment 2 ) FIG. 5 shows an overall structure of a heat retaining pot with a heating function and a cross section of a heat source portion. 11 is a container. Reference numeral 12 is a heating device provided on the bottom portion 13 of the container 11. The heating device 12 includes a gas tank 14, an opening / closing valve 15, a gas ejection nozzle 16, an air suction ejector 17, a combustion catalyst 18, and an ignition device 19. A connecting portion 20 is provided on the lower side surface of the container 11, and a connecting piece 21 is provided on the upper side surface of the heating device. Reference numeral 22 is a high voltage generator using a piezoelectric element. Reference numeral 23 is an on-off valve operation piece. Reference numeral 24 is an operation button for operating the high voltage generator 22. Reference numeral 29 is a protective plate that covers the upper portion of the combustion catalyst 18. When the heating device 12 is rotated with the connecting portion 20 aligned with the connecting piece 21, the container 11
And the heating device 12 is fixed.

At this time, the bottom portion 13 of the container is brought into close contact with the protective plate 29. After fixing the heating device 12 to the container 11, the opening / closing valve 15 is opened by sliding the opening / closing valve operating piece 23 in the lateral direction, and the fuel gas is ejected from the gas ejection nozzle 16. The jetted fuel gas sucks in air by the air suction ejector 17, becomes a mixed gas, and flows to the upper portion of the combustion catalyst 18. At this time, the protective plate 29 is formed in a hemispherical shape, an appropriate space is formed between the outlet of the air suction ejector 17 and the protective plate 29, and the pressure loss is reduced to allow sufficient suction of air. Further, since the space becomes narrower toward the outer circumference, the mixed gas smoothly flows through the combustion catalyst 18 to the exhaust port 25.

When the operation button 24 is pressed at the same time, a high voltage is generated by the high voltage generator 22 and transmitted to the ignition device 19 provided downstream of the combustion catalyst 18, where a spark is generated and a mixed gas is produced. Is ignited. Eventually, when the temperature of the combustion catalyst 18 rises to the temperature at which the catalyst can be burned due to the heat of the flame, the combustion shifts to catalytic combustion. The heat generated by the catalytic combustion heats the protective plate 29, and the bottom portion 13 of the container 11 adhered to the protective plate 29 is heated.
Is also heated and the temperature of the entire contents rises. When extinguishing the fire, the on-off valve 15 is closed by returning the on-off valve operation piece 23 to its original position. As described above, in this embodiment, when the container and the heating device are separated from each other, important parts such as the combustion catalyst do not go out and have a high durability.

(Embodiment 3 ) FIG. 6 shows a cross section of a heat source portion of a heat retaining pot having a heating function.
12 is a heating device. The heating device 12 is the gas tank 1
4, an on-off valve 15, a gas ejection nozzle 16, an air suction ejector 17, a combustion catalyst 18, and an ignition device 19. A connecting piece 21 is provided on the upper side surface of the heating device. Reference numeral 22 is a high voltage generator using a piezoelectric element.
Reference numeral 23 is an on-off valve operation piece. 24 is a high voltage generator 22
Is an operation button for activating. 29 is a combustion catalyst 18
Is a protective plate that covers the upper part of the. A heat shield plate 30 is provided between the lower portion of the combustion catalyst 18 and the upper portion of the gas tank 14.

When the opening / closing valve operating piece 23 is slid laterally, the opening / closing valve 15 is opened, and the fuel gas is jetted from the gas jet nozzle 16. The jetted fuel gas sucks in air by the air suction ejector 17 to become a mixed gas, and the combustion catalyst 18
Flowing to the top of the. At this time, the protective plate 29 is formed in a hemispherical shape, an appropriate space is formed between the outlet of the air suction ejector 17 and the protective plate 29, and the pressure loss is reduced to allow sufficient suction of air. The suctioned air flows from the air intake port 31 into the air suction ejector 17 through the upper portion of the gas tank 14. On the other hand, the mixed gas flows through the combustion catalyst 18 to the exhaust port 25.

At the same time, when the operation button 24 is pressed, a high voltage is generated by the high voltage generator 22 and is transmitted to the ignition device 19 provided downstream of the combustion catalyst 18, where a spark is generated and a mixed gas is produced. Is ignited. Eventually, when the temperature of the combustion catalyst 18 rises to the temperature at which the catalyst can be burned due to the heat of the flame, the combustion shifts to catalytic combustion. The heat generated by the catalytic combustion heats the protective plate 29, and the bottom portion 13 of the container 11 adhered to the protective plate 29 is heated.
Is also heated and the temperature of the entire contents rises. During heating, the temperature of the gas tank 14 rises due to combustion heat, but since the suctioned air passes while cooling the upper part of the gas tank 14, it does not rise to a dangerous temperature. As described above, the present embodiment has a configuration in which the heat from the heating device is shut off, the temperature rise of the gas tank is suppressed, and the safety is improved.

[0027]

According to the first aspect of the present invention, there is provided a heating device including a container for containing a liquid, an air suction ejector including a gas ejection nozzle connected to a gas tank via an opening / closing valve, a combustion catalyst, and an ignition device. The heating device is provided below the container, and the mixed gas outflow portion of the air suction ejector penetrates through the combustion catalyst and is located above the combustion catalyst to allow the mixed gas to flow in from above the catalyst. The temperature of the heating device can be reduced by positioning the mixed gas outflow part of the air suction ejector above the combustion catalyst, thereby reducing the size of the heating device. The advantageous effect that it becomes easy to carry is obtained.

According to a second aspect of the present invention, a protective plate is provided at the opening of the heating device, the mixed gas outflow portion of the air suction ejector penetrates the combustion catalyst and is located above the combustion catalyst, and the mixed gas is catalyzed. It is configured so that it flows in from the top, and when attached to the container, the bottom of the container and the protective plate are in close contact with each other, which has the advantageous effect of protecting important parts of the heating device and improving durability. To be

According to a third aspect of the present invention, exhaust gas is discharged from the lower portion of the combustion catalyst, a heat shield plate is provided between the combustion catalyst and the gas tank, and air is taken in through the heat shield plate and the gas tank. Insulated pot with heating function,
The advantageous effect of cutting off the heat from the heating device, suppressing the temperature rise of the gas tank, and improving the safety is obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the configuration of a heat retaining pot with a heating function according to a reference example of the present invention.

FIG. 2 is a perspective view of a heat retaining pot with a heating function according to a reference example of the present invention.

One ginseng container heating function insulation pot of the present invention; FIG
Sectional view showing the configuration of the example

FIG. 4 is a cross-sectional view showing the configuration of a heat retaining pot with a heating function according to the first embodiment of the present invention.

FIG. 5 is a sectional view showing the structure of a heat retaining pot with a heating function according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view of a main part of a heat retaining pot with a heating function according to the present invention.

FIG. 7 is a partially cutaway side view of a conventional heat retaining pot with a heating function.

[Explanation of symbols]

11 containers 12 Heating device 13 Bottom of container 14 gas tank 15 on-off valve 16 Gas ejection nozzle 17 Air suction ejector 18 Combustion catalyst 19 Ignition device 20 Connection 21 connecting piece 26 Insulation 27 Insulation lid 28 Mixed gas outlet 29 Protective plate 30 heat shield

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-7-246162 (JP, A) JP-A-2-103307 (JP, A) JP-A-57-70308 (JP, A) Actual development Sho-59- 105425 (JP, U) Actual development Sho 62-39631 (JP, U) Actual development Sho 56-40718 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47J 27/21 A47J 36 / 24 A47J 41/00

Claims (3)

(57) [Claims] 1. A heating device comprising a container for containing a liquid, an air suction ejector including a gas ejection nozzle connected to a gas tank via an opening / closing valve, a combustion catalyst, and an ignition device. A heat retaining pot with a heating function, which is provided below the container, has a mixed gas outflow portion of the air suction ejector penetrating the combustion catalyst, is located above the combustion catalyst, and allows the mixed gas to flow in from the upper portion of the catalyst. 2. A protective plate is provided at the opening of the heating device, the mixed gas outflow portion of the air suction ejector penetrates the combustion catalyst and is located above the combustion catalyst so that the mixed gas flows in from the upper portion of the catalyst. configured, when mounted on a container, the container bottom and the heating function insulation pot according to claim 1 wherein as protection plate are in close contact. Wherein the exhaust gas was discharged from the bottom of the combustion catalyst, the heat shield plate provided between the combustion catalyst and the gas tank, according to claim 2 obtained by the intake throughout the hot plate and the gas tank shield the air
Insulated pot with the described heating function.