JPH0126448B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a fuel vaporization device for a burner.

[Prior Art and Problems to be Solved by the Invention] In the case of a so-called gasification burner that vaporizes liquid fuel and burns it while ejecting it from the nozzle of the combustion disk, the liquid fuel is completely vaporized. However, if there is a portion of the oil that is not vaporized and is supplied in the form of oil droplets, incomplete combustion is likely to occur, resulting in red-flame combustion. This invention is particularly intended to eliminate the problem of liquid fuel becoming oil droplets.

[Means for Solving the Problems] In order to solve these technical problems, the present invention provides a structure of a fuel vaporization device for a burner that has the following requirements.

a. Guide ventilation for vaporizing the fuel, and
At the outer circumference of the ventilation tube 1 arranged along the horizontal direction, there is provided a vaporization tube 2 in which the base end of the ventilation tube 1 on the lower side of the ventilation tube 1 is closed and the tip side of the ventilation tube 1 on the upper side of the ventilation tube 1 is open. It is rotatably provided so that fuel can flow from the base end side to the distal end side of the inner circumferential surface of the vaporization cylinder 2 by rotation. b A fuel vaporization fin 8 is provided on the lower outer circumferential surface portion 6 of this ventilation tube 1 and projects into a vaporization passage 7 formed between the outer circumference surface of this ventilation tube 1 and the inner circumference surface of the outer vaporization tube 2. Was it.

c Fuel vaporization fins 8 on the outer peripheral surface of the ventilation tube 1
A communication hole 9 that communicates the inside and outside of the ventilation tube 1 is configured near the end of the ventilation tube 1 on the downstream side.

[Operations and Effects of the Invention] The wind inside the ventilation tube 1 promotes the vaporization of the fuel that diffuses and flows along the inner peripheral surface of the rotating vaporization tube 2. However, at this time, if liquid fuel that is not sufficiently vaporized is scattered in the vaporization path 7 between the inner circumferential surface of the vaporizing tube 2 and the outer circumferential surface of the ventilation tube 1, this liquid fuel will It collides with and adheres to the fins 8 attached to the lower outer peripheral surface. Then, due to wind pressure, the fuel vaporizing fin 8 is moved to the lower end of the air blowing side,
At the terminal end of the fuel vaporizing fin 8, this liquid fuel is transferred to the terminal edge of the fuel vaporizing fin 8 by the jet blowing through the ventilation hole 9, which is short-circuited from the inside of the ventilation tube 1 toward the vaporization path 7 on the outside. The part flows toward the outer circumference,
It is blown onto the inner circumferential surface of the outer vaporizing cylinder 2. Then, while flowing along the inner circumferential surface of the rotating vaporization tube 2, vaporization is promoted.

Therefore, oil droplets of liquid fuel adhering to the lower outer circumferential surface 6 of the ventilation pipe 1 are less likely to flow directly to the terminal end side and sent to the combustion section as oil droplets, thereby reducing incomplete combustion. It is possible.

[Example] The embodiments shown in the drawings will be described below.

First, the configuration of the embodiment will be explained.

1 is a ventilation tube whose longitudinal direction runs along the horizontal direction,
This ventilation pipe 1 guides wind for vaporizing fuel. A rotating diffuser 3 that rotates around a horizontal shaft 16 is disposed on the inner peripheral side of the tip of the ventilation tube 1 . This rotating diffuser 3 has the function of guiding the wind from the ventilation tube 1 and guiding it to the vaporizing tube 2 on the outer peripheral side while receiving and diffusing the supplied fuel. teeth,
The diameter is small on the upper side in the air blowing direction, and the diameter becomes larger toward the lower side of the air blowing direction. Reference numeral 4 denotes a nozzle for supplying fuel, and the longitudinal direction of this nozzle 4 is provided approximately along the flow direction of the ventilation. It opens toward the surface.

2 is located on the outer peripheral side of the ventilation tube 1, and is connected to the shaft 1.
6 is a vaporizing cylinder that rotates integrally with the rotating diffuser 3,
A predetermined interval is provided between the inner circumferential surface of the vaporizing tube 2 and the outer circumferential surface of the ventilation tube 1 to form a vaporizing passage 7.
In addition, a fuel vaporization fin 8 is provided on the lower outer circumferential portion 6 of the ventilation tube 1, and a fuel vaporization fin 8 that protrudes toward the vaporization path 7 on the outer circumference side is provided. A ventilation hole 9 is provided that communicates the inner circumferential side and the outer circumferential side of the housing.

Reference numeral 11 denotes a combustion tube. This combustion tube 11 is formed into a dish shape with a peripheral wall and a bottom wall. A vent hole 12 is provided on the outer circumferential side of this bottom wall. A portion of the ventilation hole 12 in the bottom wall portion is located within a ventilation path that flows from the rear side to the front side on the outer peripheral side of the combustion cylinder 11. Further, a combustion plate 14 is arranged in front of the bottom wall of the combustion tube 11 with a predetermined space,
This combustion disk 14 and the bottom wall portion of the combustion tube 11 constitute a fume chamber 15. 13, 13, . . . are ejection holes provided in the combustion disk 14.

The carburetor tube 2 has a proximal end projecting forward of the combustion tube 11 attached to the rotary shaft 16 so as to be freely rotatable, and the diameter increases from the proximal end to the rear tip side. The conical disk 1 is arranged so that a small gap 17 is formed at the edge with an inclusion such as a wire mesh.
8 is located. A gap 19 is provided between the outer circumferential surface of the conical disk 18 and the inclined surface on the inner circumferential side of the combustion disk 14.

The rear base end of the ventilation tube 1 is fixed to the bottom wall of the combustion tube 11, and the inner peripheral opening of the combustion tube 11 is configured to substantially follow the inner peripheral surface of the vaporization tube 2.
A blower (not shown) is connected to the inside of the ventilation tube 1 so as to blow air from the rear side. Nozzle 4
is the direction of air blowing and the axis 16 inside this blower tube 1.
The ejection holes 5 at the tip end face the nozzle 4, close to the rotating diffuser 3, and are open. 21 is an ignition plug. 22 is a flame sensor.

When the burner is configured with the shaft 16 in a horizontal position, the fuel vaporization fin 8 is located on the lower outer circumferential surface 6 of the ventilation tube 1, within a corresponding range with the outer circumference of the vaporization tube 2, and is located on the lower side of the ventilation tube 1. The front side of the side is made low and the rear side of the lower side for ventilation is made higher. The fuel vaporizing fins 8 may be provided in a direction parallel to the shaft 16, or may be provided in a helical shape.

In this case, as shown in the figure, a resistance plate 10 is provided protruding from the part of the ventilation hole 9 on the inlet side of the ventilation hole 9, that is, on the inner peripheral surface of the ventilation tube 1, to reduce the wind inside the ventilation tube 1. It will be more effective if it can easily pass through the ventilation hole 9.

Next, the operation of the embodiment will be explained.

The rotation of the shaft 16 causes the rotating diffuser 3 and the vaporization tube 2 to rotate. Ventilation is conducted into the ventilation tube 1 from the rear side to the front side, passes through the outer circumferential side of the rotating diffuser 3, passes through the outer circumference side of the ventilation tube 1 and the vaporization passage 7, and reaches the fumarole chamber 15. Spout hole 13,1
3, ... is ejected toward the front of the combustion disk 14.

The fuel is ejected from the ejection hole 5 of the nozzle 4 onto the rotating outer circumferential surface of the rotating diffuser 3, flows toward the inner circumferential surface of the vaporizing tube 2 while being diffused around the rotating diffuser 3, and further flows toward the inner circumferential surface of the vaporizing tube 2. It is vaporized while flowing along the inner circumferential surface of the vaporization tube 2 toward the tip side edge. This vaporized fuel passes through the vaporization passage 7 into the fume chamber 15.
Here, it is ejected from the gap 17, the space 19, the injection holes 13, 13, . It is sent forward by the air from the blower tube. This flame heats the vaporization tube 2 from the outside, promoting the vaporization of the fuel in the vaporization path 7.

[Brief explanation of drawings]

The drawings show embodiments of the invention.
The figure is a partial side sectional view, and Figure 2 is a front view thereof.
Figure 3 is an enlarged side sectional view of a part of it, and Figure 4 is:
FIG. [Explanation of symbols], 1... Ventilation tube, 2... Evaporation tube,
3...Rotating diffuser, 4...Nozzle, 5...Ejection hole, 6...Lower outer peripheral surface portion, 7...Vaporization path, 8...
Fuel vaporization fin, 9... Ventilation hole, 10... Resistance plate, 11... Combustion tube, 12... Ventilation hole, 13...
Nozzle hole, 14... Combustion disk, 15... Fumarole chamber, 16
...shaft, 17 ... gap, 18 ... conical disc, 19
...Space part, 21...Ignition plug, 22...Flame sensor.

Claims (1)

[Claims] 1. A fuel vaporization device for a burner that has the following requirements. a. Guide ventilation for vaporizing the fuel, and
At the outer periphery of the ventilation tube 1 arranged along the lateral direction, there is provided a vaporization tube 2 in which the base end of the ventilation tube 1 on the lower side of the ventilation tube 1 is closed and the tip side of the ventilation tube 1 on the upper side of the ventilation tube 1 is open. It is rotatably provided so that fuel can flow from the proximal end to the distal end of the inner circumferential surface of the vaporizing cylinder 2 by rotation. b A fuel vaporization fin 8 is provided on the lower outer circumferential surface portion 6 of this ventilation tube 1 and projects into a vaporization passage 7 formed between the outer circumference surface of this ventilation tube 1 and the inner circumference surface of the outer vaporization tube 2. Was it. c Fuel vaporization fins 8 on the outer peripheral surface of the ventilation tube 1
A communication hole 9 that communicates the inside and outside of the ventilation tube 1 is configured near the end of the ventilation tube 1 on the downstream side.