JP2003194303A - Burning method for extending combustion life of solid alcohol fuel and its device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a burning method of a solid alcohol fuel for extending the combustion life of the solid alcohol fuel and also to provide its device. <P>SOLUTION: This burning method is used for extending the combustion life of the solid alcohol fuel by burning the solid alcohol fuel 1 in a cylinder part 3 made of a heat-insulating ceramics. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid alcohol fuel combustion method and apparatus for extending the combustion of solid alcohol fuel.

[0002]

2. Description of the Related Art In general, solid alcohol fuel is easy to carry and does not emit visible smoke when burned, and does not emit a smell when burned. It is used for keeping heat or heating. As shown in the perspective view of FIG. 7, this solid alcohol fuel is usually marketed in a state of being filled in an aluminum container 2 made by deep-drawing an aluminum foil, and if necessary, cellophane. Wrapped in and transported. Then, during use, the solid alcohol fuel 1 filled in the aluminum container 2 is ignited to keep heat or heat. This aluminum container 2
The solid alcohol fuel 1 filled in the box has a lower fire power than a portable gas cylinder and a gas stove, and its size is small, so the burning time is short, but no special device is required, and it can be used at any place. It has the convenience of being usable even in a narrow space.

[0003]

As described above, the gas burner and the gas stove have the convenience of being able to freely change the state of the flame by adjustment, but the temperature of the burner flame can be adjusted by adjusting the firing of the silver clay compact. It is difficult to adjust the temperature to the optimum temperature for sintering, and free adjustment of the burner flame is often performed at a temperature outside the optimum temperature for sintering the silver clay compact, and the desired porosity is not achieved. It was difficult to obtain a silver ornament that had.

[0004]

Therefore, the present inventors have
While conducting research to develop a method for more easily and easily sintering silver clay, (a) the flame of the above-mentioned commercially available solid alcohol fuel was directly used as a heat source for sintering the silver clay molded body to directly produce the silver clay molded body. The temperature of the flame of the solid alcohol fuel is optimum for sintering the silver clay compact, and the flame of the solid alcohol fuel is directly applied to the silver clay compact to easily sinter the silver clay compact. The solid alcohol fuel (b) that can be used is the solid alcohol fuel filled in the aluminum container 2 prepared by deep-drawing the aluminum foil shown in the conventional perspective view of FIG. As shown in the perspective view of FIG. 2, the solid alcohol fuel 1 is charged in the heat insulating ceramics tubular portion 3 shown in the figure.
Is burned in a state surrounded by the heat insulating ceramics tubular portion 3, the solid alcohol fuel 1 filled in the aluminum container 2 made by deep drawing the aluminum foil in FIG. 7 is burned as it is. It was found that the burning time would be longer than that.

The present invention has been made on the basis of such findings, and (1) a combustion method for prolonging the combustion life of a solid alcohol fuel in which a solid alcohol fuel is burned in a tubular portion made of adiabatic ceramics; ) A combustion method for prolonging the combustion life of a solid alcohol fuel in which a solid alcohol fuel filled in an aluminum container is burned in a tubular portion made of adiabatic ceramics, (3) By the combustion method according to (1) or (2) above. A method of sintering a silver clay compact. It is characterized by

The apparatus used in the combustion method for prolonging the combustion life of the solid alcohol fuel of the present invention is sufficient if the heat insulating ceramics cylinder portion 3 shown in the perspective view of FIG. 1 is sufficient, but the sectional view of FIG. As shown in Fig. 3, a heat insulating ceramics cylinder portion 3 and a heat insulating ceramics bottom portion 5
Alternatively, the solid alcohol fuel 1 filled in the deep-drawn aluminum container 2 may be charged into the insulating ceramic container to burn the solid alcohol fuel 1. Further, as shown in the perspective view of FIG. 4, a state in which the heat insulating ceramics cylinder portion 3 and the heat insulating ceramics base portion 4 are prepared and the heat insulating ceramics cylinder portion 3 is placed on the heat insulating ceramics base portion 4. Then, the solid alcohol fuel 1 may be charged into the heat insulating ceramic cylinder portion 3 and the solid alcohol fuel 1 may be burned. In the case of a device having a heat-insulating ceramic base part 4, the solid alcohol fuel 1 should be directly inserted into the heat-insulating ceramic tube part 3 without being wrapped in aluminum foil or filled in a deep-drawn aluminum container. You can

Therefore, according to the present invention, (3) a combustion device for prolonging the combustion life of a solid alcohol fuel having a heat insulating ceramics cylinder portion, (4) a container having a heat insulating ceramics cylinder portion and a heat insulating ceramics bottom portion is provided. Combustion device for prolonging the combustion life of solid alcohol fuel, and (5) Combustion device for prolonging the combustion life of solid alcohol fuel by placing a heat insulating ceramics cylinder on a heat insulating ceramics base. It has characteristics.

In the combustion method for prolonging the combustion life of the solid alcohol fuel of the present invention, the solid alcohol fuel 1
As shown in FIG. 2 or FIG. 5, it is necessary to insert the top surface of the so that it does not project from the heat insulating ceramic tubular portion 3, and the solid alcohol fuel 1 as shown in the perspective view of FIG. If the uppermost surface and the tubular portion 3 made of adiabatic ceramics are made to be at the same height, the combustion life of the solid alcohol fuel 1 is slightly shortened.

This solid alcohol fuel is usually formed into a disk-shaped body or a columnar body having upper and lower planes having a relatively large area, and since the relatively large upper plane is ignited to generate a flame. A relatively large soft flame can be generated, and the silver clay compact can be wrapped while being sintered by the relatively large soft flame. Further, when solid alcohol fuel is charged into the heat insulating ceramics cylinder portion and the solid alcohol fuel 1 is burned in a state surrounded by the heat insulating ceramics cylinder portion 3, the temperature of the flame generated by the combustion of the solid alcohol fuel is reduced. Since it can be kept at 800 ° C. or higher for a long time, it is particularly effective for sintering a silver clay molded body. Therefore, when the silver clay molded body is sintered by the device in which the solid alcohol fuel is charged in the heat insulating ceramic cylinder portion, the silver clay molded body can be sintered more efficiently.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Example 1 A porous alumina refractory ring 1 having an inner diameter of 39 mm, an outer diameter of 53 mm and a height of 27 mm shown in FIG. 1 was prepared. This ring is placed on a porous alumina refractory pedestal base 4 as shown in FIG. 4, and a cylindrical solid alcohol fuel 1 having a diameter of 39 mm and a height of 22 mm is charged into this ring. Then, it was burned, and the holding time at which the part exposed to the flame was kept at 800 ° C. was measured and found to be 315 seconds.

Conventional Example A cylindrical solid alcohol fuel 1 having a diameter of 39 mm and a height of 22 mm filled in a deep-drawn aluminum container 2 shown in FIG. 7 is burned as it is, and a flame hit portion is 800. As a result of measuring the holding time kept at ℃,
It was 280 seconds.

[0012]

EFFECTS OF THE INVENTION An embodiment in which a cylindrical solid alcohol fuel having a diameter of 39 mm and a height of 22 mm is burned in a state surrounded by a ring made of a porous alumina refractory, and a diameter is 39 mm and a height is: Comparing with a conventional example in which a cylindrical solid alcohol fuel having a size of 22 mm is burned in a deep-drawn aluminum container, the cylindrical solid alcohol fuel is maintained at 800 ° C. or higher due to the combustion of the cylindrical solid alcohol fuel having the same size. It can be seen that the working time is longer in the embodiment.

[Brief description of drawings]

FIG. 1 is a perspective view of a heat insulating ceramic ring used in the sintering method of the present invention.

2 is a perspective view showing a state in which a solid alcohol fuel filled in the deep-drawing aluminum container of FIG. 7 is charged in a heat insulating ceramic ring.

3 is a cross-sectional view showing a state in which a solid alcohol fuel filled in the deep-drawing aluminum container of FIG. 7 is charged in a heat insulating ceramics container.

FIG. 4 is a perspective view showing a state where solid alcohol fuel is charged into a heat insulating ceramic ring.

FIG. 5 is a perspective view showing a state where solid alcohol fuel is charged in a ring made of a heat insulating ceramics.

FIG. 6 is a perspective view showing a state in which solid alcohol fuel is charged in a heat insulating ceramic ring.

FIG. 7 is a perspective view showing a solid alcohol fuel filled in a deep-drawn aluminum container.

[Explanation of symbols]

1 solid alcohol fuel 2 Aluminum container 3 Insulating ceramic ring 4 Heat-insulating ceramics base 5 Heat insulating ceramic bottom

Claims (7)

[Claims] 1. A combustion method for prolonging the combustion life of a solid alcohol fuel, which comprises burning the solid alcohol fuel in a tubular portion made of adiabatic ceramics. 2. A combustion method for prolonging the combustion life of a solid alcohol fuel, characterized in that the solid alcohol fuel filled in an aluminum container is combusted in a heat insulating ceramics cylinder portion. 3. A method of sintering a silver clay molded body by a combustion method for prolonging the combustion life of the solid alcohol fuel according to claim 1 or 2. 4. A combustion apparatus for prolonging the combustion life of a solid alcohol fuel, characterized by having a tubular portion made of heat insulating ceramics. 5. A combustion apparatus for prolonging the combustion life of a solid alcohol fuel, comprising a heat insulating ceramics container having a heat insulating ceramics cylindrical portion and a heat insulating ceramics bottom portion. 6. A combustion apparatus for prolonging the combustion life of a solid alcohol fuel, characterized in that a heat insulating ceramics cylinder portion is placed on a heat insulating ceramics base portion. 7. A silver clay compact sintering device, characterized by incorporating a combustion device for prolonging the combustion life of the solid alcohol fuel according to claim 4, 5 or 6.