JPS643952Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a heat generating device that burns vaporized gas of liquid fuel or gaseous fuel.

In general, the method of burning liquid fuel is to suck it up using a "core" made of bundles or woven fabrics of cellulose such as cotton or glass wool asbestos, and then bring a separate ignition source close to the tip of the core material. A method in which a portion of the fuel is vaporized and burned, and the resulting heat is used to vaporize the fuel one after another to continue combustion, or a method in which the fuel is ejected in the form of a spray and a separate ignition source is provided. There is a combustion method in which a combustion flame with a large calorific value is obtained by igniting the combustion flame. On the other hand, gaseous fuels are guided through pipes or ducts, and once ignited by an ignition source at an optimal mixing ratio with air, a combustion method is used in which a continuous combustion flame is obtained.

However, the above combustion method is suitable for large-scale devices such as combustion devices that generate a relatively large amount of heat, and requires an ignition source, and because it involves the generation of flames, there is a risk of starting a flame. It has many drawbacks, such as being large, making it unsuitable for heat generating devices that continuously obtain minute amounts of heat over a long period of time through complete combustion, and making it difficult to produce cheap and safe products. There was nothing that could burn it efficiently.

In view of the above, the present inventor has already proposed a heat generating device that is small and lightweight and can safely and efficiently generate a small amount of heat over a long period of time.

The present invention aims to achieve the above-mentioned objectives and to provide a heat generating device that is small in size and allows safe and complete combustion operation.

Hereinafter, embodiments of the present invention will be specifically described in detail with reference to the drawings.

Fig. 1 is a vertical cross-sectional view of the proposed device, and Fig. 2 is a three-dimensional perspective view showing its main components. 1 is a tank for storing fuel 2; Gaseous fuels such as methane, ethane, and butane are used. Reference numeral 3 denotes a fuel guide body whose lower part is immersed in the fuel 2 and is arranged so as to guide the fuel upward. Reference numeral 4 denotes a shielding plate made of metal or ceramic, in which a through hole 4a into which a shaft protrusion 1a provided at the center of the tank 1 is rotatably inserted coincides with the upper end 3a of the fuel outlet body 3. Through hole 4 for delivering fuel when
b is provided. 5 is a porous plate made of porous ceramic, asbestos, glass wool, etc., which has 500 to 500 pores per square inch.
This porous plate 5 is composed of carbon fibers etc. assembled and molded with a small amount of adhesive.
The upper surface has a recess 5a formed in a cross shape, radial shape, uneven shape, etc. for air circulation.
is provided. 6 is a ceramic porous body, which has a honeycomb structure with a large number of triangular, square, hexagonal, circular, etc. holes arranged in one direction, or a three-dimensional network with a large number of irregularly shaped communicating holes, etc. It only needs to be relatively small, and such a ceramic porous body 6 contains platinum group metals such as platinum (Pt), palladium (Pd), and rhodium (Rh), which are components that have an oxidation catalytic effect, at a rate of 0.5 per volume. ~
It is loaded with about 5g. The components constituting the main parts are assembled as shown in FIG. 1, and are housed in a lower case _C1 and an upper case _C2 , which form a pedestal.

The operation of the heat generating device configured as above will be explained next.

The tank 1 stores liquid or gel alcohol fuel such as methanol, or liquefied fuel such as ethane or butane.
It is in a state where it has been guided to. However, as shown in FIG. 1, when the through hole 4b formed in the shielding plate 4 and the upper end 3a of the fuel deriving body 3 are aligned,
The fuel guided by the upper end 3a passes through the through hole 4b, is absorbed by the porous plate 5, is vaporized by the porous plate 5, and is then supplied to the ceramic porous body 6. Since the ceramic porous body 6 supports a platinum group metal having an oxidation catalytic effect, the vaporized fuel is oxidized and burned. Therefore, this combustion heats the heating plate disposed above the ceramic porous body 6, and the heating plate 7 contains a heated plate 8 containing chemicals, fragrances, etc. that volatilize as the temperature rises. It can be used for various heating purposes.

In the heat generating device according to the present invention that operates in this manner, the fuel that passes through the through hole 4b from the upper end 3a of the fuel outlet body 3 is absorbed by the porous body plate 5, and then vaporized and sent to the ceramic porous body 6. However, in this case, as the fuel vaporizes, air is supplied to the porous plate 5 through the recess 5a provided in the porous plate 5, and is sent to the ceramic porous body 6 together with the vaporized fuel. In the porous body 6, a complete oxidation combustion reaction is carried out under sufficient oxygen supply, and an exothermic operation is carried out by complete combustion with high efficiency.

Moreover, the proposed device has a lower case _C1 that forms a pedestal.
The exterior is formed by an upper case C 2 and an upper case C ₂ , and both cases C ₁ and C ₂ rotate relative to each other around a shaft protrusion 1 a provided at the center of the tank 1 . That is, the hole 4 made in the center of the blocking plate 4
Since the shaft projection 1a is rotatably inserted through the shaft a, the shielding plate 4 rotates on the upper surface of the tank 1. In addition, a porous plate 5 fixed to the blocking plate 4,
The ceramic porous body 6 is further fixed to the upper case _C2 , while the tank 1 is fixed to the lower case C2.
C ₁ is fixed to the upper and lower cases
By mutually rotating C ₂ and C ₁ , the shielding plate 4 is rotated, and the through hole 4b formed in the shielding plate 4 is connected to the upper end 3 of the fuel outlet body 3, as shown by the dotted line in the figure.
It is in a state where it is deviated from the position of a, and the upper end portion 3a
The supply of fuel from the porous body plate 5 to the porous body plate 5 is cut off, and therefore, the oxidative combustion action of the fuel in the ceramic porous body 6 can be stopped.

If you want to restart the heat generating operation, rotate the upper and lower cases C ₂ and C ₁ and insert the through hole 4b in the cutoff plate 4 into the upper end 3a of the fuel deriving body 3.
After the fuel is vaporized in the porous plate 5, it is oxidized and burned again in the porous ceramic body 6, and the heat generated in the porous ceramic body 6 causes the fuel to be placed on the upper part of the heating plate 7. It is possible to heat an object to be heated.

As described above, according to the present invention, a porous plate for air circulation is arranged to vaporize the fuel from the fuel derivation body and send the fuel to the ceramic porous body that performs an oxidation combustion reaction in a uniform state. Since it has a concave part and allows sufficient air (oxygen) to be supplied through the concave part for combustion, it has a simple structure, achieves complete combustion, and is highly efficient, compact, and safe. equipment can be provided.

[Brief explanation of the drawing]

FIG. 1 is a central vertical sectional view of a heat generating device according to an embodiment of the present invention. FIG. 2 is an exploded view showing the main components of the heat generating device according to the embodiment of the present invention shown in FIG. DESCRIPTION OF SYMBOLS 1...tank, 2...fuel, 3...fuel derivation body, 4...blocking plate, 5...porous body plate, 6...porous ceramic body, 7...heating plate, 8...object to be heated.

Claims (1)

[Scope of utility model registration request] A tank for storing fuel such as methanol or butane, and a fuel derivation body for guiding the fuel in the tank.
In a heat generating device comprising a ceramic porous body supporting a platinum group metal through a porous plate,
A heat generating device characterized in that a concave portion for air circulation is formed in the porous plate.