JPH0344990Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a liquid fuel combustion device using a catalyst.

Recently, electronic devices, cameras, and the like are often used outdoors, but especially in cold regions, their performance often suffers, and there is a strong need to keep them warm.

In conventional liquid fuel combustion devices, the catalyst layer and the liquid fuel-impregnated layer are placed close to each other, but are carefully separated so that they do not come into contact with each other, since it is necessary to promote the vaporization of the liquid fuel by generating heat in the catalyst layer. was. This is because when the catalyst layer becomes wet with liquid fuel due to capillary action, the catalytic action is lost and the heat generating function is stopped. Therefore, it is not easy to continuously promote the vaporization of liquid fuel in cold regions, and fuels often run out.

This idea is an improvement to the above-mentioned conventional liquid fuel combustion device using a catalyst to solve its drawbacks.The purpose is to continuously vaporize liquid fuel even in cold regions. can encourage
An object of the present invention is to provide a liquid fuel combustion device that does not cause burnout.

In other words, despite the aforementioned theory of wetting the catalyst layer and stopping the catalytic action, if the amount of liquid fuel is sufficiently small compared to the amount consumed in the oxidation reaction in the catalyst layer, it is possible to supply it as a liquid. It was confirmed that there was no problem with the catalytic action.

Hereinafter, the configuration of this invention will be explained with reference to the drawings showing one embodiment.

Reference numeral 1 designates a liquid fuel tank, which has a spout 2 provided at the center of its upper surface, and contains cotton 3 that forms a layer impregnated with volatile liquid fuel (eg, benzine). Reference numeral 4 denotes a lid body provided with a plurality of ventilation holes 5, and is placed over the liquid fuel tank 1 with a space 6 formed therein.

A vaporization hole 7 is provided inside the mouth frame 2 of the liquid fuel tank 1.
A lead holding fitting 9 having a lead holding body 8 is fitted therein, and the lead holding member 8 holds a lead 10 in contact with the cotton 3. Furthermore, a washer 1 having a vaporization hole 11 is provided on the outside of the mouth frame 2 of the liquid fuel tank 1.
Crater frame 14 holding catalyst layer 13 placed on 2
is fitted, and the tip of the core 10 held by the core holder 8 is brought into contact with a portion of the catalyst layer 13 with a sufficiently small contact area to the catalyst layer 13, so that the liquid fuel flows into the catalyst layer. A sufficiently smaller amount of liquid fuel is supplied to the catalyst layer 13 than the amount consumed by the oxidation reaction in step 13.

The core 10 is made of a fiber made of metal, glass, etc., which has heat resistance and causes a capillary phenomenon, or is made of a porous pipe-like material, and the catalyst layer 13 is made of a porous material supporting a catalyst such as a platinum group element. It is my body.

Next, the effects of the liquid fuel combustion apparatus of this invention constructed as described above will be described.

The freezing point of the liquid fuel (e.g., benzine) used in this invention is much lower than the vaporization point (approximately -50°C in the case of benzine). By utilizing capillary action, the liquid fuel can be supplied to the catalyst layer even at low temperatures. It is. Incidentally, the consumption amount of liquid fuel that undergoes an oxidation reaction in the catalyst layer is closely related to the amount of air supplied to the catalyst layer, etc., but it differs greatly depending on how the liquid fuel combustion device is used. In other words, it is difficult to make a general decision because of the complicated factors of eliminating water vapor and carbon dioxide generated by oxidation reactions and replacing oxygen in the air. Therefore, the amount of liquid fuel consumed in the catalyst layer is not the amount consumed by the entire catalyst, but the amount consumed by a part of the catalyst layer.If heat is partially sustained, the liquid fuel impregnated layer It has the effect of promoting vaporization from the liquid and preventing it from disappearing.

That is, in this invention, by covering the liquid fuel tank 1 with the lid body 4 having a plurality of vent holes 5 and having the space 6 surrounding the mouth frame 2 of the liquid fuel tank 1, The supply of air to the catalyst layer 13 is maintained, and the tip of the wick 10 is
The area of contact with the catalyst layer 13 is made sufficiently small so that a portion of the catalyst layer 13 is brought into contact with the catalyst layer 13 so that a sufficiently smaller amount of liquid fuel is applied to the catalyst layer 13 than the amount of liquid fuel that is consumed through an oxidation reaction in the catalyst layer 13. By supplying the liquid fuel to the impregnated layer, the liquid fuel is consumed not in the entire catalyst layer 13 but in a part thereof, and the heat generation of the catalyst layer 13 is maintained, so that vaporization of the liquid fuel from the impregnated layer is promoted and it is possible to prevent the liquid fuel from disappearing. I can do it.

As mentioned above, the liquid fuel combustion device of this invention can continuously promote the vaporization of liquid fuel even in cold regions, and does not cause the liquid fuel to run out, and has excellent practical effects. There is.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of the liquid fuel combustion device according to this invention, Fig. 2 is a partially cutaway plan view of the liquid fuel combustion device, and Fig. 3 is the lid and wick of the liquid fuel combustion device removed. It is an exploded perspective view of a state. 1...liquid fuel tank, 2...mouth frame, 3...
Cotton, 4...Lid body, 5...Vent hole, 6...Space part,
7... Vaporization hole, 8... Core holder, 9... Core holding fitting, 10... Core, 11... Vaporization hole, 12... Washer, 13... Catalyst layer, 14... Crater frame.

Claims (1)

[Scope of utility model registration request] A space 6 in which a lid body 4 having a plurality of vent holes 5 surrounds a mouth frame 2 of a liquid fuel tank 1.
At the same time, a core holding metal fitting 9 having a vaporization hole 7 and a core holding body 8 is fitted inside the mouth frame 2 of the liquid fuel tank 1, and the lead holding fitting 9 is fitted onto the liquid fuel impregnated layer. The wick 10 brought into contact with the wick 10 is held on the wick holder 8, and a catalyst layer 1 is placed on a washer 12 having vaporization holes 11 on the outside of the mouth frame 2 of the liquid fuel tank 1.
The tip of the wick 10 held by the wick holder 8 is brought into contact with a part of the catalyst layer 13 with a sufficiently small contact area to the catalyst layer 13, and the tip of the wick 10 held by the wick holder 8 is brought into contact with part of the catalyst layer 13. A liquid fuel combustion device characterized in that a sufficiently smaller amount of liquid fuel is supplied to the catalyst layer 13 compared to the amount of fuel that is consumed through an oxidation reaction in the catalyst layer 13.