JPH049506A - Liquid fuel vaporizer - Google Patents

Abstract

PURPOSE:To diffuse liquid fuel over the whole inside bottom face of a vaporization vessel, raise the efficiency of vaporization of the liquid fuel, and suppress the attachment to and accumulation in the vaporization vessel of tar by placing rolling elements in the vaporization vessel. CONSTITUTION:One or a plurality of rolling elements 40 are put in a vaporization vessel 10 and the rolling elements make circular motion as they move freely on the inner bottom face 15 of the vaporization vessel 10 by the air that is blown into the vaporization vessel 10, and they also roll to the area on the inner bottom face 15 of the vaporization vessel 10 where the kerosene stays to attach the kerosene to the structures of the rolling elements 40, and they roll to other areas and the kerosene which tries to stay at a section of the inner bottom face 15 of the vaporization vessel is spread on the whole inner bottom face 15 by the rolling elements 40 and the kerosene diffused all over is efficiently vaporized, suppressing the attachment and accumulation of tar, etc. Rolling elements 40 with high heat conductivity promote the vaporization of the kerosene more effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a liquid fuel vaporization device for vaporizing liquid fuel, mainly kerosene, and providing it for combustion.

<Prior art and its problems> Generally, as shown in FIG. 1, in a gas-type liquid fuel vaporization apparatus, a lower space 11 in a vaporization container 10 is used as the vaporization space, and a flame hole is provided in the upper part of the vaporization container 10. 12 are provided. Then, the fuel vaporized in the vaporization space 11 rises and is burned on the flame hole set 12. The vaporization space 11
For the fuel injection nozzle 20 from the side wall of the vaporization container 10
and an air introduction pipe 30, which feed liquid fuel and air. Then, the liquid fuel and air sent in are vaporized in the vaporization space 11 heated by the heater 13.

FIG. 4 is a horizontal sectional view of the lower part of the vaporization container 10 in the conventional device, and corresponds to the AA section in FIG. 1.

As is clear from this figure, most of the liquid fuel ejected from the fuel ejection nozzle 20 hits the inner wall surface 14 of the vaporization container 10 facing the nozzle 20, falls directly below, and then vaporizes. In the area on the inner bottom surface 15 where this liquid fuel falls and accumulates, the liquid fuel tends to accumulate, so the temperature tends to decrease, and as a result, the vaporization ability decreases.
It had the disadvantage of easily generating tar. That is, the conventional apparatus had a drawback in that tar was likely to accumulate in the area.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid fuel vaporization device that eliminates the drawbacks of the conventional devices described above, performs vaporization well, and does not cause tar or the like to adhere to or accumulate on the bottom of the vaporization container.

Means for Solving the Problems> In order to achieve the above object, the liquid fuel vaporization device of the present invention provides a vaporization container in which liquid fuel is introduced together with air and vaporized, and the introduced air causes the liquid fuel to be vaporized on the bottom surface of the container. It is characterized by the inclusion of rolling elements that are moved.

<Operation> According to the feature of the present invention described above, the rolling elements are moved on the inner bottom surface of the vaporization container by the air entering the vaporization container.

Therefore, the liquid fuel that tends to accumulate on a part of the inner bottom surface of the vaporization container is attached to the surface by the rolling elements and is spread over the entire inner bottom surface of the vaporization container. Therefore, there is no region in the vaporization container where the temperature decreases and the vaporization ability is reduced, and the liquid fuel is efficiently vaporized throughout the entire region inside the vaporization container. That is, generation and adhesion of tar are reliably suppressed.

<Example> FIG. 1 is a longitudinal cross-sectional view of an apparatus for implementing the present invention, and FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1.

A fuel injection nozzle 20 for ejecting kerosene and an air introduction pipe 30 are provided facing the vaporization space 11 in the lower part of the vaporization container 10 in the circumferential direction of the vaporization space 11. rises while swirling within the vaporization space 11, and is vaporized during this time.

In the present invention, one or more rolling elements 40 are connected to the vaporization container 10.
I put it inside. This rolling element 40 is moved by the air blown into the vaporization container 10 into the inner bottom surface 15 of the vaporization container 10.
It will perform a circular motion while moving freely above. Therefore, the rolling elements 40 are located in a part of the inner bottom surface 15 of the vaporization container 10 (the fourth
The kerosene that tends to accumulate in area D) in the figure also rolls into that area, attaches the kerosene to the surface of the rolling element 40, and further rolls to other areas. Therefore, the kerosene that tends to accumulate on a part of the inner wall 15 of the vaporizer container IO is spread over the entire inner wall 15 by the rolling elements 40. That is, the vaporizing container 10 efficiently vaporizes the kerosene diffused over the entire surface without lowering the temperature of a part of the vaporizing container 10. Therefore, adhesion and accumulation of tar etc. is also sufficiently suppressed.

It is of course necessary that the rolling elements 40 be moved by blown air, but in addition, they are preferably made of a material with good thermal conductivity, such as aluminum. By using the rolling elements 40 with good thermal conductivity, vaporization of kerosene can be promoted more effectively.

The flame hole set 12 includes a rectifying cylinder 12a and a rectifying cuff 12.
b, a flame hole cup 12c, gold 5I412d, etc., and vaporized gas is guided according to the arrow and burned on the flame hole 12e. Note that the cylindrical body 50 passes through the center of the carburetor (the cylinder body 50 is connected to the rectifying cup 12).
b and the flame hole cup 12c, and guides secondary air onto the flame hole cup 12c through the inner hole.

The presence or absence of combustion on the flame hole 12e is determined by the flame rod 60.
It is detected by a flame detector called . As shown in the cross-sectional view of FIG. 3, the frame Rondro 0 has a double structure in which the sheath 61 is made of a hollow heat-resistant steel made of titanium alloy, and the core 62 is made of a material with good thermal conductivity, such as a copper alloy. There is. Conventionally, the frame rod 60 was constructed only from heat-resistant steel, which had poor thermal conductivity and the temperature tended to rise only in the part that came in contact with the flame.As a result, despite its excellent heat resistance, it had shortcomings in thermal durability. there were. By having a double structure in the frame rod 60 shown in FIG. 3, it is possible to suppress the rise in temperature of the portion that comes into contact with the flame, thereby increasing thermal durability.

In this embodiment, the frame rod 60 has a double structure, but the ignition rod may also have a double structure, for example.

<Effects> The present invention has the above configuration and operation, and according to the liquid fuel vaporizer according to claim 1, by placing the rolling elements in the vaporization container, the liquid fuel is not accumulated in a part of the vaporization container. It can be diffused throughout the inner bottom surface without any problem. Therefore, it is possible to vaporize the liquid fuel efficiently and reliably, and it is also possible to sufficiently suppress tar from adhering and accumulating in the vaporizing container.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of the device implementing the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, FIG. 3 is a cross-sectional view of the frame rod, and FIG.
The figure is a sectional view illustrating a conventional device. 10: Vaporization container 11: 14: 15: 20: 30: 40: 60: Vaporization space Inner wall surface of vaporization container Inner bottom surface of vaporization container Fuel injection nozzle Air introduction pipe Rolling element frame rod

Claims (1)

[Claims] (1) A liquid fuel vaporization device characterized in that a vaporization container into which liquid fuel is introduced together with air and vaporized includes rolling elements that are moved on the bottom surface of the container by the introduced air.