JP2587248B2 - Kerosene gasification burner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a burner for vaporizing and burning kerosene.

[Conventional technology]

Japanese Patent Application No. Sho 60
No. -22,619 is known. In this known technique, the inner cylinder and the burner cylinder are fastened to each other with a fixed gap. The gap serves as a flow path for combustion air.

[Problems to be solved by the invention]

<Part I> In the kerosene gasification burner according to the above-described known technology, the screw is provided through a gap that is a combustion air flow path. For this reason, there is a possibility that the combustion air is insufficient in the vicinity of the screw and a red flame is generated downstream of the combustion air. This red flame represents incomplete combustion, and there is a large amount of soot attached near the red flame.

<Part II> If the combustion air is insufficient due to the above-mentioned screw or if the combustion air is insufficient for some other reason, soot combustion is caused and soot adheres to the vicinity of the tip of the vaporization cylinder.

When soot adheres to the tip of the vaporization cylinder, the vaporization cylinder becomes difficult to be heated by the flame, hinders vaporization of the fuel, and the adhesion of the soot proceeds at an accelerated rate.

This further promotes incomplete combustion. In addition, there is a risk that the heat exchanger (not shown) of the petroleum gasification and combustion apparatus will be clogged with soot.

The present invention has been made in order to solve the above problems I and II at once, there is no possibility of generating a red flame in the wake of the screw fastening portion, and moreover, a large amount of soot is present at the tip of the vaporization cylinder. It is an object of the present invention to provide a kerosene gasification burner that automatically stops the operation of the burner when it adheres and can prevent soot clogging of the heat exchanger.

[Means for solving the problem]

In order to achieve the above object, a petroleum gasification burner of the present invention includes a burner cylinder, an inner cylinder concentrically arranged in the burner cylinder, a front end of the burner cylinder, and a front end of the inner cylinder. A screw that is fastened across the gap through which the secondary air flows, a primary air hole / noise hole provided at the center of the bottom of the inner cylinder, and a nozzle hole that faces and covers the nozzle hole. In a petroleum gasification burner provided with a hemispherical shell-shaped vaporization cylinder and a cylindrical leg for supporting the air cylinder against the bottom of the inner cylinder, near the screw fastening portion at the front end of the cylinder of the burner And a projection protruding toward the inside of the burner cylinder is provided, and a frame rod is provided so as to be opposed to and separated from the vaporization cylinder.

[Action]

According to the above configuration, the protrusion provided near the screw disturbs the flow of the gas flow (causes a slight overflow) and improves the mixing of the fuel gas and the air. There is no risk of occurrence.

Also, if incomplete combustion occurs for some reason and as a result, soot adheres to the tip of the vaporizing cylinder, the frame rod facing away from the vaporizing cylinder is grounded via soot. An apparatus (not shown) is operated to stop the operation of the kerosene gasification burner.

As a result, the operation and monitoring personnel can detect that soot has adhered to the vaporizer, so that soot removal cleaning and other appropriate measures can be taken at an early stage, and the occurrence of serious damage can be prevented before and completely. it can.

〔Example〕

FIG. 1 is a sectional view showing one embodiment of a kerosene gasification burner according to the present invention.

An inner cylinder 2 is disposed in the burner cylinder 1, and the vicinity of the distal ends (near the left end in the figure) of both members is fastened to each other by screws 12 and forms a gap g for air circulation.

A number of small holes 3 are provided on the side wall of the inner cylinder 2 on the downstream side.
However, a large number of small holes 4 are arranged on the downstream side. These small holes 3, 4 act as supply ports for secondary air.

A nozzle hole 5 is provided at the center of the bottom surface of the inner cylinder 2, and a bowl-shaped partition plate 8 is attached so as to cover the nozzle hole from the rear (right side in the figure).

Holes 8 are arranged in a side wall of the partition plate 8, and a nozzle 10 is attached to a center portion of the partition plate. 11 is an ignition electrode.

The vaporizing cylinder 6 is formed in a hemispherical shell shape, and has a cylindrical leg 7.
Thereby, it is fixedly supported on the bottom surface of the inner cylinder 2, and an example of the concave surface is opposed to and separated from the nozzle hole 5. Illustrated
16 and 17 are flames, respectively.

FIG. 2 shows a partially enlarged view of the burner cylinder 1 of the present example as viewed from the left side in FIG. At the front end of the burner cylinder, near the screw 12, there is provided a projection 14 protruding toward the inside of the burner cylinder.

In the kerosene gasification burner having the above configuration, the combustion air enters through the hole 9 of the partition plate 8 as the primary air and is supplied into the vaporization cylinder 6 from the nozzle hole 5, and the secondary air is supplied to the inner cylinder 2 as the secondary air. The gas is supplied into the inner cylinder 2 from the holes 3 and 4 and the gap g. The combustion is sprayed from a combustion injection nozzle 10, passes through a nozzle hole 5, strikes a vaporization cylinder 6, and is gasified. The vaporized gas is
It is mixed with the secondary air supplied from the small holes 3 and 4 of the inner cylinder 2 and the gap g to form a flame 16 and a flame 17. The vaporization cylinder 6 is heated by the radiant heat of the flame 16 to promote gasification of the fuel, and the bottom of the inner cylinder 2 is heated by the flame 17 to prevent the spray fuel from accumulating in this portion. Note that the ignition electrode 11 ignites the fuel sprayed from the fuel injection nozzle 10. The secondary air from the gap g is
The flame in this part will be a red flame due to lack of air, but because the flow is disturbed by the projection 14,
In the wake of this part, the mixing of the air and the fuel gas is promoted, and the generation of a red flame is prevented.

FIG. 3 shows an embodiment different from the above. Instead of the protrusion 14 in the embodiment of FIG. 2, in the embodiment of FIG. 3, a washer 15 having a diameter larger than the width of the front end of the burner cylinder 1 is screwed to the screw 12.
The projection is formed so as to project toward the inside of the burner cylinder 1 by being fitted to the outside.

According to this embodiment, the same operation and effect as those of the embodiment of FIG. 2 can be obtained.

In the present embodiment, a frame rod 18 is further installed facing and away from the vaporizing cylinder 6. Reference numeral 19 denotes an insulator which supports the frame rod 18 with respect to the burner cylinder 1.

The kerosene gasification burner of this example detects the flame 16 by the flame rod 18 and continues burning.

If the combustion air is insufficient for some reason, the flame 16 may not be formed, and therefore, the vaporization becomes insufficient, the flame 16 becomes soot-burning, and soot is deposited at the tip of the vaporization cylinder. When the soot accumulates on the tip of the vaporizing cylinder, the flame rod is armed by the soot, and the combustion is stopped by the action of a control device (not shown).

〔The invention's effect〕

As described above in detail, according to the kerosene gasification burner of the present invention, there is no possibility of generating a red flame in the wake of the screw fastening portion,
In addition, when a large amount of soot adheres to the tip of the vaporizing cylinder, the operation of the burner is automatically stopped, and there is an excellent practical effect that the soot clogging of the heat exchanger can be prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of a kerosene gasification burner according to the present invention. FIG. 2 is a partially enlarged end view of the vicinity of the screw tightening portion in the above embodiment, and FIG. 3 is a partially enlarged end view of the vicinity of the screw tightening portion in an embodiment different from the above. 1 ... burner cylinder, 2 ... inner cylinder, 3,4 ... small hole, 5 ... nozzle hole, 6 ... vaporization cylinder, 10 ... nozzle, 12 ... screw, 14
... Projection, 18 ... Frame rod.

Claims (1)

(57) [Claims] 1. A burner cylinder (1), an inner cylinder (2) concentrically disposed in the burner cylinder (1), a front end of the burner cylinder (1) and a front end of the inner cylinder (2). Screw (12) that fastens between the gap (g) through which the secondary air flows formed therebetween
A primary air hole / noise hole (5) provided at the center of the bottom of the inner cylinder (2); and a hemispherical shell-shaped vaporization cylinder disposed so as to face and cover the nozzle hole (5). (6) and vaporization cylinder (6)
(7), which supports the bottom of the inner cylinder (2)
In a petroleum gasification burner equipped with a burner cylinder (1)
Protrusions (14, 15) protruding toward the inside of the burner cylinder (1) are provided near the screw fastening part at the front end of the cylinder, and the frame rod (18) is installed facing and separated from the vaporization cylinder (6). An oil gasification burner characterized by the following.