JPH06103095B2 - Catalytic combustion device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a catalytic combustion device, and more particularly to ignition confirmation.

2. Description of the Related Art Conventionally, this type of catalytic combustion device has a structure as shown in FIG. That is, FIG. 3 is a cross-sectional view of a hair curler using a catalytic combustion device, where 1 is a catalyst, 2 is a temperature controller, 3 is a curler body that forms a combustion chamber, and 4 is the outer periphery of the curler body 3. The brushes 5 attached as above are exhaust holes for discharging the burned gas to the outside. Reference numeral 6 denotes a temperature-sensitive display portion, which changes color when reaching a certain temperature, such as a temperature indicating tape. The temperature sensitive display portion 6 is attached in contact with the outer surface of the brush 4, and when the inside of the combustion chamber is heated by catalytic combustion, it receives heat via the curler body 3 which is the wall of the combustion chamber and reaches a certain temperature. Then I try to change the color.

Problems to be Solved by the Invention In such a conventional configuration, the heat-sensitive display section receives heat via the combustion chamber wall, while the combustion chamber wall has a heat capacity, and therefore, after starting catalytic combustion, It took time for the thermosensitive display to change color. Therefore, after the ignition operation by the switch, it really ignites and starts burning,
I didn't immediately know if the curler part was warming up, so it was awkward to use.

Usually, a metal such as aluminum, which has heat resistance, is used for the wall material of the combustion chamber, but the metal has a large heat capacity and it takes time to raise the temperature. In reality, the sensitivity of the heat-sensitive display is poor, and it takes time to raise the temperature of the heat-sensitive display.

The present invention solves such a problem, and an object of the present invention is to make the thermosensitive display unit reach a certain temperature in a short time after the start of catalytic combustion.

Means for Solving the Problems To solve this problem, the present invention provides a tank for storing liquefied fuel gas, a nozzle for vaporizing the liquefied fuel gas in the tank, and a gas discharged from the nozzle. A catalyst that burns when a mixture of air is supplied and burns, and a temperature controller that is disposed on the gas discharge side of the nozzle and that senses combustion heat of the catalyst and controls the amount of gas discharged from the nozzle. A heating section having a combustion chamber heated by combustion of the catalyst; an exhaust hole provided in the heating section; and an exhaust hole provided outside the heating section facing the exhaust hole. A temperature-sensitive display unit that communicates with the hole to form an exhaust passage is provided, and a temperature-sensitive display body is provided on the outer surface side of the temperature-sensitive display unit facing the exhaust hole.

Action The action of this configuration is as follows.

That is, in the combustion state after ignition, high heat quantity combustion is performed until the desired set temperature is reached, and when the set temperature is reached, the temperature regulator works to adjust the gas flow rate and maintain the low heat quantity combustion. Move on to. Therefore, the exhaust gas of high calorific value combustion after ignition until reaching the set temperature is intensively applied to the thermosensitive display section located opposite to the exhaust hole to reach the constant temperature in the thermosensitive display section in a short time. It can be done.

Embodiment FIG. 1 and FIG. 2 are sectional views showing the application of a catalytic combustion apparatus to a hair curler as an embodiment of the present invention. 1st and 2nd
In the figure, 7 is a tank filled with liquefied gas, and a nozzle 8 is connected to the outlet of this tank. On the gas discharge side of this nozzle, an inner pipe 9a of a low expansion coefficient metal material and a high expansion coefficient metal material are provided. There is a temperature controller 10 made of a bimetal consisting of the outer pipe 9b, and the outer pipe 9a is fixed to the nozzle 8. A plurality of holes 11 for allowing gas to pass through are formed on the outer peripheral surfaces of the inner pipe 9a and the outer pipe 9b. Outer pipe 9b
A catalyst 12 is provided at a constant distance on the outer periphery of the inner pipe 9a, the outer pipe 9b and the catalyst 12 are provided in a combustion chamber 14 formed in a curler body 13 which is a heating unit. . A brush 16 is attached to the outside of the curler body 13 with a trowel 15 interposed therebetween. If the brush 16 is removed, the lever knob 17 can be operated to move the trowel 15. An exhaust hole 18 is provided on the root side of the curler body 13, that is, on the tank 7 side, and the iron 15 and the brush 16 arranged outside the curler body 13 are provided with exhaust gas generated in the combustion chamber 14. To exhaust to the outside from the exhaust hole 18,
An exhaust passage 18a is formed so as to face the exhaust hole 18. 1
Reference numeral 9 denotes a temperature sensitive display portion formed on the brush 16 and facing the exhaust hole 18, and the temperature sensitive display portion 19 has an exhaust hole 18
A temperature sensitive display body 20 is provided on the outer surface side of the temperature sensitive display body 20. The temperature sensitive display body 20 is made of a material such as a temperature indicating tape that changes color when the temperature exceeds a certain temperature and returns to the original color when cooled.

Next, the operation of this embodiment will be described. Liquefied gas (eg, butane gas) in the tank 7 is ejected from the tip of the nozzle 8 toward the inner pipe 9a by operating a switch. At this time, the surrounding air is sucked in through the hole formed in the inner pipe 9a. Then, the mixed gas of liquefied gas and air is brought into contact with the surface of the catalyst 12 through the inner pipe 9a and the outer pipe 9b. Operate the switch to eject gas and at the same time operate the piezoelectric element 20,
Sparks are emitted between the outer pipe 9b and the electrode 21 to ignite the mixed gas. As a result, catalytic combustion is started on the surface of the catalyst 12. The exhaust gas burned on the surface of the catalyst 12 is released to the outside through the exhaust hole 18. At this time, as shown in FIG. 1, the high temperature exhaust gas generated in the combustion chamber 14 is exhausted from the exhaust hole 18 to the exhaust passage 18a.
Is discharged to the outside through. At this time, at a position facing the exhaust hole 18 of the temperature-sensitive display unit 19, the exhaust gas hits the temperature-sensitive display unit 19 in a short time, and the temperature-sensitive display body 20 provided on the outer surface side thereof is provided. Discolor rapidly.

Therefore, since the color changes after the switch is operated, it is possible to know whether or not the ignition and the combustion are surely performed. Immediately after ignition, the control of the nozzle valve by the temperature controller 10 is not working,
The nozzle valve is completely open. Therefore,
Since a large amount of liquefied gas is burning, the heat quantity of exhaust gas is high and the rate of temperature rise of the heat-sensitive display unit 19 is high, which causes the temperature-sensitive display body 20 to change color in a short time. Then, when the temperature of the curler main body 13 which is the heating portion approaches the set temperature, the valve of the nozzle 8 is throttled by the operation of the temperature controller 10, and the curler main body 13 operates so as to be maintained at a predetermined temperature. As described above, after the curler main body 13 is shifted to the stable combustion state in which the temperature is controlled to a predetermined temperature, the combustion amount of the liquefied gas also decreases and the amount of the exhaust gas generated also decreases. The amount of heat for heating is reduced. Further, since the temperature sensitive display portion 19 is also separated from the curler body 13 which is the heating portion by the exhaust passage 18a, it can be kept at a temperature lower than that of the curler body 13 portion, which improves thermal durability. is there. That is, the characteristics of the exhaust gas due to the action of the temperature controller 10 are effectively utilized, and the temperature sensitive display unit 19 is heated in a short time at the time of ignition, and the temperature sensitive display body 20 is rapidly eclipsed to accurately ignite. Confirmation is possible, and moreover, after the transition to stable combustion, the temperature-sensitive display 19
The temperature of the temperature sensitive display 20 can be maintained at a low temperature and the durability of the temperature sensitive display body 20 that repeats the color changing operation can be enhanced.

EFFECTS OF THE INVENTION As described above, according to the present invention, since the heat-sensitive display portion is attached to the position facing the exhaust hole, the high-heat amount exhaust gas intensively heats the heat-sensitive display portion immediately after ignition. Therefore,
When a heat-sensitive display material such as a temperature indicating tape is used, the color changes in a short time, so that it is possible to immediately know after the switch is operated whether ignition or combustion has been performed reliably. Moreover, the heating of the heat-sensitive display part by the exhaust gas is strong only when the temperature rises until the combustion chamber wall reaches the set temperature after ignition, and is weak after the set temperature is reached, so the heat-resistant life of the heat-sensitive display material is extended. There is also.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a main part of the catalytic combustion type hair curler of the present invention, FIG. 2 is a sectional view of the same tactile combustion type hair curler, and FIG. 3 is a sectional view of a conventional catalytic combustion type hair curler. . 10 …… Temperature controller, 12 …… Catalyst, 14 …… Combustion chamber, 18 ……
Exhaust hole, 19: Thermal display.

 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-58-112507 (JP, A) JP-A-57-134609 (JP, A) JP-A-52-27913 (JP, A) JP-B-59- 34929 (JP, B2)

Claims (1)

[Claims] 1. A tank for storing a liquefied fuel gas, a nozzle for vaporizing the liquefied fuel gas in the tank, a catalyst which burns when a mixed gas of gas and air discharged from the nozzle is supplied, Heating having a temperature controller which is arranged on the gas discharge side of the nozzle and controls the amount of gas discharged from the nozzle by sensing the combustion heat of the catalyst, and a combustion chamber which is heated by the combustion of the catalyst. A portion, an exhaust hole provided in the heating portion, and a temperature-sensitive display portion that is disposed outside the heating portion so as to face the exhaust hole and that communicates with the exhaust hole to form an exhaust passage. A catalytic combustion device, comprising: a temperature-sensitive display unit provided on the outer surface side of the temperature-sensitive display unit facing the exhaust hole.