JPH0325203A - Liquid fuel combustion device - Google Patents

Abstract

PURPOSE:To improve tarring resistance by a method wherein a filter having an inlet and an outlet filter formed integrally with each other is mounted throughout the whole area of the lower inner part of a gasifying pipe to gasify liquid fuel, an air layer is formed to the upper part of the filter, and a communicating pipe through which an oil feed port and a nozzle are intercommunicated is opened in the air layer. CONSTITUTION:A filter 28 located throughout the whole area of the lower inner part of a gasifying pipe 4 is formed of a porous foamed metallic material of Ni-Cr. An oil feed port 5 and a communicating pipe 11 are opened to an air layer 29 formed throughout the whole area of the upper part of the filter 28. By arranging the filter 28 in a manner described above throughout the whole area of the lower inner part of a gasifying pipe to gasify liquid fuel, a gasifying condition is improved, for example, a gasifying area is increased, and the generation of a tar content is difficult to make. Even when a tar content is generated, tar is prevented to the utmost from flowing in the communicating pipe 11 by means of the filter 28, and adhesion of tar to a nozzle 7 can be difficult to make. This constitution enables improvement of tarring resistance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a liquid fuel combustion device for vaporizing and burning liquid fuel, and particularly to the structure of the vaporizing section.

[Conventional technology]

FIG. 4 is a cross-sectional view showing a liquid fuel combustion device previously proposed by the applicant in Japanese Patent Application No. 63-218471.

In the figure, reference numeral 1 denotes a fuel tank, and an electromagnetic pump 2 is installed on the top surface of the fuel tank, and one end of a fuel supply pipe 3 is connected to the electromagnetic pump 2. The other end of the fuel supply pipe 3 is connected to a fuel supply port 5 that projects into the space layer 2B inside the annular vaporization pipe 4.

7 is a circular ring. The nozzle is located at the lower center of a shaped vaporizing pipe 15, and has a nozzle hole 8 at one end of its upper end, and one end of a return pipe 10 is connected to the other end.

The other end of the return pipe 10 is connected to an electromagnetic solenoid 9,
The other end of the electromagnetic solenoid 9 opens into the fuel tank 1.

11 is a communication pipe that communicates the nozzle 7 with the inside of the vaporization tube 4; 12 is a preheating heater disposed outside the vaporization tube 4;
Reference numeral 13 denotes a throat portion located coaxially above the nozzle hole 8 .

In addition, the vaporizer pipe 4, the fuel filler port S, the nozzle 7, the communication pipe 11
, preheater 12; is integrally molded from aluminum die-casting having a throat portion 13 and a heat recovery wall 14, and forms a vaporizer 15.

Heat recovery'! ! A burner head 18 having a flame hole 16 on the inner peripheral side of the flame hole 14 and a metal mesh 17 beam-welded to the outer periphery of the flame hole 1B is disposed.

The burner head 18 is covered with a burner head cap 19, and the burner head cap 19 is tightened with bolts 20 and nuts 21 cast into aluminum die-casting.

22 is a thermistor screwed into the carburetor 15 near the nozzle 7, 23 is located inside the return pipe 10, and ws1! is controlled by the electromagnetic solenoid 9 to open and close the nozzle hole 8. 21 dollars, 25 is located around the fuel filler port 5 in the vaporizing pipe 4, so that it has a space layer 2B in the upper part with the fuel filler port S as the center.
An inlet filter 27 is formed of a metal material such as a stainless steel mesh and is provided at the lower part of a predetermined part extending half the circumference in the circumferential direction, and 27 is a vaporizer centered on the communication pipe 11 on the opposite side of the fuel filler port S in the vaporizer 14. This is an outlet filter formed of a metal material such as a copper mesh provided over the entire half circumference of the tube 4 in the circumferential direction.

Figures 5 and 6 are sectional views taken along line A-A and B-B in Figure 4, respectively.
2a is a sectional view.

Next, the operation will be explained. When the preheater 12 is energized, the vaporizer W15 is heated, and the vaporizer tube 4 is heated to 200 to 30
When the temperature reaches 0°C, this humidity is detected by the thermistor 22, the electromagnetic pump 2 starts operating, and the liquid t! in the fuel tank 1 passes through the fuel supply pipe 3. The fuel is supplied from the fuel supply port 5 into the vaporizing pipe 4, falls onto the upper surface of the inlet filter 25, and is heated and vaporized.

Along with this, the electromagnetic solenoid 9 causes 21 dollars 23
But WIAII! I, and the nozzle hole 8 is opened.

As a result, the vaporized fuel passes through the outlet filter 27 and is ejected from the nozzle hole 8 toward the inlet of the throat portion 13 .

The kinetic energy of this jet causes slow movement in Part 7, Part 1.
Air is simultaneously sucked in from around the inlet m8 of No. 3, and this sucked air passes through the throat portion 13 with the vaporized sq and is guided to the burner head 18 where they are mixed to form an air-fuel mixture. Thus formed t. : Air-fuel mixture from the burner head 18 hole 1B through the metal mesh i? If it is ejected through Jt and ignited by an appropriate means, it will form a flame 24 and burn.

From then on, combustion is maintained by the continuously supplied air-fuel mixture. In addition, when the fire is extinguished, the magnetic pump 2 stops and the nozzle hole 8 is consumed by the electromagnetic solenoid Bσ].
is closed by the 21 dollar 23, the injection of vaporized fuel is stopped, and the flame 24 outside the flame hole 16 is extinguished. Or [
The vaporized fuel in the vaporization pipe 4 passes through the return pipe 1ro.
The fuel is returned to the fuel tank 1.

[Am that the invention attempts to solve]

Conventional liquid fuel combustion equipment is constructed as described above, so it uses a single impure lamp that has been exposed to sunlight for a long time and has contained bad kerosene that has undergone polymerization reactions, water, triethane, etc. In this case, there was a problem that too much tar was adsorbed to the saw outlet filter 27, which was provided to prevent tar from flowing into the nozzle a, and the outlet filter 27 was clogged.

This invention was made to solve the above-mentioned problems, and in addition to adsorbing tar with a filter,
We have created a liquid fuel combustion system with improved tar resistance that prevents the fuel system from becoming clogged with tar even if tar adheres to the filter, and eliminates the need to replace the equipment even if bad or impure kerosene is used. The purpose is to obtain.

[! l! Means to solve the problem]

The liquid fuel combustion device according to the present invention is provided with a filter that integrates an inlet filter and an outlet filter in the entire lower part of a vaporization pipe that vaporizes liquid fuel, forms a space layer above the filter, and communicates with a fuel filler port and a nozzle. A communicating pipe is opened into the space layer.

[Effect]

In this invention, by providing a filter throughout the lower part of the vaporization pipe that vaporizes liquid fuel, it is possible to improve vaporization conditions such as increasing the area during vaporization in the inlet filter part around the fuel filler port, and generating tar. In addition, in the outlet filter area around the communication pipe that communicates with the nozzle, by preventing the amount of water from flowing into the communication pipe, tar will adhere to the nozzle and become red.
Furthermore, since a space layer is provided above the filter, even if the filter becomes clogged, the fuel line becomes less likely to become clogged.

〔Example〕

FIG. 1 is a sectional view of a liquid fuel combustion device showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-AI in FIG. 1, and FIG. 3 is a sectional view taken along the line B-BpUr in FIG.

In the figures, the same structure as the conventional example or the same reference numeral as the conventional example is used, and the explanation of the overlapping structure is omitted.

A filter 28 is provided over the entire lower part of the vaporizing tube 4, and is made of a porous Ni-Cr foam metal box.

29 is a spatial layer formed over the entire upper part of the filter 28. The refueling port 5 and the communication pipe 11 should be connected to this space layer.

Next, the operation of the above embodiment will be explained.

The combustion operation is the same as the conventional example, but the liquid fuel supplied into the vaporization pipe 4 from the fuel filler port 5 flows down and is efficiently vaporized by the filter 28.
The temperature at which the fuel supplied in 4 is vaporized is approximately 180~2
Although the temperature is 50° C., even ordinary kerosene contains components with high boiling points or components that are difficult to vaporize, which accumulate on the filter as residue.

In addition, in the case of defective kerosene that has been exposed to sunlight for a long time and has deteriorated, polymerization progresses and there is a large amount of residue due to the high boiling point content. However, when the filter 28 is provided, the contact area with the fuel increases, the vaporization rate increases, and the amount of residue decreases. In other words, it becomes difficult to generate tar portions.

Further, even if tar is generated, it can be dammed up by the filter 28 to prevent it from flowing into the communication pipe 11 side. Furthermore, even if the filter 28 is clogged with tar, the M feed line becomes clogged because the opening of the communication pipe 11 is located in the space M2B in the upper part of the vaporizing tube 4.

In the above embodiment, the filter 28 has N i - ar
Although a foamed metal material is shown, other metallic materials such as foamed metal, sintered metal, metal mesh, or wool-like metal materials may be used. In addition, the oil supply port 5 of the filter 28
The material, porosity, etc. of the peripheral part and the vicinity of the continuous vibrator 11 may be changed.

In addition, although we have shown a method that sucks in primary air using the energy of fuel gas, even if the method uses a method that forcibly blows primary air, the above implementation can be implemented if the fuel vaporization section has a similar configuration. The same effects as in the example can be obtained.

〔Effect of the invention〕

As explained above, this FjJl is equipped with a filter throughout the lower part of the vaporization pipe that vaporizes liquid fuel, which improves vaporization conditions such as increasing the vaporization area and makes it difficult to generate tar components. Even if tar is generated,
The filter prevents tar from flowing into the communication vibrator as much as possible, making it difficult for tar to adhere to the nozzle.

Furthermore, even if the filter or gas section becomes clogged with tar, the communicating vibe is opened in the upper space layer, so the fuel system path will not be clogged, further improving tar resistance. .

[Brief explanation of drawings]

Fig. 1 is a 'ffr side view of a liquid fuel twisting and burning device showing one embodiment of the present invention, Fig. 2 is a sectional view taken along the line A--A in Fig. 1, and Fig.
The figure is a sectional view taken along the line B-B in Fig. 1, Fig. 4 is a sectional view showing a conventional liquid fuel combustion device, and Fig. 5 is a sectional view taken along the line B-B in Fig. 4.
The cross-sectional view, FIG. 6, is a cross-sectional view of the B-B camphor tree in FIG. In the diagram, 4 carburetor tubes, 5 fuel filler port, 7 nozzle, 1
1 is a communication pipe, 28 is a filter 2, and 2nd is a spatial spring. The same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] A vaporizer pipe that vaporizes the liquid fuel supplied from the fuel tank through the filler port, a communication pipe that leads the fuel gas vaporized in the vaporizer pipe out of the vaporizer pipe, and an injection of the fuel gas that is supplied through the communication pipe. In the liquid fuel combustion device, the inlet filter and the outlet filter are integrated. What is claimed is: 1. A liquid fuel combustion device, characterized in that the fuel filler port and the communication pipe are opened in the space layer, and the fuel filler port and the communication pipe are opened in the space layer.