JPH0129377Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vaporizing burner that vaporizes and burns liquid fuel, mainly kerosene.

Conventionally, this type of burner has a cylinder between the combustion surfaces of a burner 3, in which a pair of gas chambers 3a whose opposing surfaces are combustion surfaces with a large number of flame ports are communicated on one side through a communication passage 3b. A type of carburetor 1 is faced, one side of the carburetor 1 is connected to the communication passage 3b of the burner 3 via the communication pipe 4, and the other side is connected to the duct 8.
The preheater 7 is placed on the lower surface of the vaporizer 1, and the supply port 9a of the fuel supply pipe 9 faces into the vaporizer 1, so that the liquid from the fuel supply pipe 9 is A vaporizing burner that vaporizes fuel in a vaporizer 1, mixes the vaporized gas with air from a blower 2, and supplies the mixture to a burner 3 is disclosed in, for example, Japanese Patent Application Laid-Open No. 1983-1999.
-Known from Publication No. 149522.

However, with this type of fuel, the fuel comes into contact with only a limited portion of the carburetor and vaporizes, so as the amount of fuel supplied increases, it is not sufficiently vaporized and is supplied to the burner by the wind from the blower, causing combustion. When the temperature of the vaporizer is high, the fuel becomes spherical and rolls around inside the vaporizer, making it difficult to evaporate smoothly. However, as mentioned above, there is also the disadvantage of red fire.

The object of the present invention is to obtain a vaporizing burner free from such inconveniences, and the object is to provide a pair of gas chambers 3a whose opposing surfaces are combustion surfaces with a large number of flame ports 3c, and a communicating passage 3b on one side of the gas chambers 3a. A cylindrical carburetor 1 is placed between the combustion surfaces of the burner 3 which are communicated with each other through a connecting pipe 4, and one side of the carburetor 1 is communicated with the communicating path 3b of the burner 3 through a connecting pipe 4. The side is connected to the blower 2 through the duct 8, and the vaporizer 1
The preheater 7 is located on the lower surface of the fuel supply pipe 9, and the supply port 9a of the fuel supply pipe 9 is faced into the vaporizer 1, and the liquid fuel from the fuel supply pipe 9 is vaporized in the vaporizer 1.
In the vaporizing burner in which the vaporized gas is mixed with air from the blower 2 and supplied to the burner 3, the connecting pipe 4 is thrust into the vaporizer 1, and the upper surface of the connecting pipe 4 is A liquid fuel diffusion plate 5 having a descending surface whose side portion gradually descends is provided with a fuel passage space between its both side edges 5a and the inner wall surface 1a of the carburetor 1. The supply port 9a of the fuel supply pipe 9 faces the top.

The illustrated burner 3 includes gas chambers 3a parallel to each other,
3a and a communication passage 3b that communicates these on one side.
A large number of flame ports 3c are provided on the opposite wall surface of the gas chambers 3a, and both gas chambers 3a, 3a are connected from the center of the communication path 3b.
A cylindrical connecting tube 4 is projected between the two gas chambers 3a, 3a, and a cylindrical carburetor 1 is provided to surround the outer periphery of the tip of the connecting tube 4.
It was installed at a position where it would be heated by the flame from the flame port 3c.

The diffuser plate 5 provided in the vaporizer 1 has a substantially arcuate cross section, has edge pieces 6 folded up at both ends, and is fixed and supported by one edge piece 6 to one end wall 1a of the vaporizer 1. I let it happen.

Reference numeral 8a indicates a branch duct branched from the duct 8, and air is supplied to the air chamber 7a of the port burner serving as the preheater 7 through the branch duct 8a.

10 is an opening provided on the lower surface of the continuous pipe 4, and 11 is a flame detection electrode.

Note that both side edges 5a of the diffusion plate 5 and the inner wall surface 1 of the vaporizer 1
The fuel passage gap 〓 formed between the side edges 5 and
Although a small space may be provided between the inner surface 1a and the side edges 5a as shown in FIG.
are formed into a sawtooth shape and a passage gap is formed between the teeth, or a passage gap is formed by interposing a wire mesh 5c between the both side edges 5a and the inner wall surface 1a as shown in FIG. This is advantageous in that it is possible to easily form a desired distance.

This burner first operates the preheater 7 and then the vaporizer 1.
Preheat. Once the carburetor 1 is heated, fuel is supplied from the fuel supply pipe 9 to the top of the diffusion plate 5.

Then, the fuel flows down on the diffusion plate 5 while being diffused, and flows down along the wall surface of the carburetor 1 over a wide range from both side edges thereof, and is vaporized in the process.

That is, the fuel is spread into a thin film by the diffusion plate 5 and flows down along the wall surface of the vaporizer 1 from both sides of the fuel, so that it vaporizes immediately when it comes into contact with the wall surface. It is mixed with the wind and supplied to the burner 3. The diffusion plate 5 is provided with a groove or depression 5d along its top, and after receiving the fuel supplied from the fuel supply pipe 9,
If the fuel is allowed to flow down along the inclined surface of the diffusion plate 5, it is possible to spread the fuel more uniformly over a wider area.

In this way, according to the present invention, the connecting pipe 4 communicating with the burner 3 is inserted into the carburetor 1, and
A liquid fuel diffusion plate 5 having a descending surface whose side portion gradually descends is placed on the upper surface of the connecting pipe 4 along its both side edges 5a.
A fuel passage gap is provided between the inner wall surface 1a of the carburetor 1 and the supply port 9a of the fuel supply pipe 9 is exposed to the top of the diffusion plate 5, so that vaporization is quick and complete. Since the fuel is vaporized into the burner, unlike the conventional example, the fuel is not supplied to the burner in an unvaporized state. Moreover, the diffuser plate 5 is simply installed by being housed on the top surface of the connecting pipe 4 of the carburetor 1, so that it does not require a large space. The structure is simple and does not require any removal, and the effect is that it can be formed compactly to increase vaporization efficiency.

[Brief explanation of the drawing]

In the drawings, Figure 1 is a perspective view of one example of the embodiment of the present invention;
Fig. 2 is a cross-sectional side view of the same, Fig. 3 is a slope view of the main part, Fig. 4 is a cross-sectional view taken along the line - - of Fig. 2, and Figs. 5 and 6 show modified examples of the side edge of the diffuser plate. show. 1... Carburizer, 2... Blower, 3... Burner,
4... Continuous pipe, 5... Diffusion plate, 5a... Both side edges.

Claims (1)

[Scope of utility model registration request] A pair of gas chambers 3a whose opposing surfaces are combustion surfaces with a large number of flame ports 3c are connected to a communication passage 3b on one side.
A cylindrical carburetor 1 is placed between the combustion surfaces of the burner 3 which are communicated with each other through a connecting pipe 4, and one side of the carburetor 1 is communicated with the communicating path 3b of the burner 3 through a connecting pipe 4. The side is connected to the blower 2 through the duct 8, the preheater 7 is located on the lower surface of the carburetor 1, and the supply port 9 of the fuel supply pipe 9 is connected in the carburetor 1.
In the vaporizing burner, the liquid fuel from the fuel supply pipe 9 is vaporized by the vaporizer 1, and the vaporized gas is mixed with air from the blower 2 and supplied to the burner 3. The connecting pipe 4 is connected to the vaporizer 1.
At the same time, on the upper surface of the connecting pipe 4, a liquid fuel diffusion plate 5 having a descending surface whose side part gradually descends is installed between its side edges 5a and the inner wall surface 1a of the carburetor 1.
A fuel passage gap is provided between the diffusion plate 5 and the diffusion plate 5.
A vaporizing burner with a supply port 9a of a fuel supply pipe 9 facing the top.