JPH0443696Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a liquid fuel combustion device that vaporizes and burns liquid fuel such as petroleum.

<Prior Art> A combustion section of a liquid fuel combustion apparatus has been conventionally provided as a burner head, for example, in Japanese Utility Model Application Laid-Open No. 60-6929. All of these conventional devices have structures shown in FIGS. 3 and 4. In other words, FIG. 3 is a plan view showing the configuration of the conventional device.
FIG. 4 is a sectional view of a conventional device.

A flame hole cup 2 is fitted and fixed in an opening at the top of the vaporizer 1. A flame hole 3 is provided in the ceiling of the flame hole cup 2, and the fuel vaporized in the vaporizer 1 is combusted through this flame hole 3. A wire mesh 4 for flame holding is spot welded to the upper surface of the ceiling of the flame hole cup 2 5a, 5.
b and is fixed.

<Problems to be solved by the invention> However, in the conventional device described above, the side periphery of the flame hole cup 2 is in complete contact with the inner wall of the vaporizer 1, and for this reason, the wire mesh 4 for flame stabilization is attached to the flame hole. Cup 2
It is placed on top of it, and its periphery is fixed by spot welding 5a. Therefore, in the conventional apparatus, the position of the flame hole 3 is inevitably moved inward due to the spot welding 5a and the like. That is, there was a drawback that the radius of combustion became small, and there was a problem that the burner could not be made smaller. In addition, since the periphery of the flame hole cup 2 is in close contact with the inner wall of the vaporizer 1, flame holding at the periphery is insufficient, resulting in flame lift, and the flame holding wire mesh around the periphery becomes red hot, causing backfire. There was a drawback that it was easy to cause this.

<Purpose> Therefore, the present invention eliminates the drawbacks of the above-mentioned conventional technology,
To provide a liquid fuel combustion device in which a combustion part can be made compact by bringing the position of a flame hole closer to the outer periphery, and stable combustion can be obtained without combustion lift or backfire.

<Means for solving the problem> The present invention mixes liquid fuel such as petroleum with air in a vaporizer and vaporizes it, and then heats the mixture by inserting it into the opening at the top of the vaporizer and fixing it in the ceiling of the flame hole cup. This is a liquid fuel combustion device in which combustion is carried out through the flame hole of the vaporizer 1, and the flame hole cup 20, which is fitted and fixed in the opening at the upper part of the vaporizer 1, has an upper half of its side peripheral wall 21 connected to the vaporizer 1.
A small hole 23 for flame stabilization is provided in the upper half of the side peripheral wall 21 of the flame hole cup 20, and a wire mesh 9 for flame stabilization is provided between the flame hole cup 20 and the inner wall surface of the flame hole cup 20. The cup 20 is attached so as to extend from the upper surface of the cup 20 to the upper half of the side peripheral wall 21 so as to cover the small hole 23 , and the wire mesh 9 is attached to a position inside the flame hole 3 on the upper surface of the flame hole cup 20 and a position inside the flame hole cup 20 . It is characterized in that it is fixed by welding to the outer surface of the upper half of the side peripheral wall 21.

<Function> The upper half of the side peripheral wall 21 of the flame hole cup 20 is arranged with a gap S from the inner wall surface of the carburetor 1, and a part of the vaporized fuel is allowed to flow through the small hole 23 provided in the side peripheral wall 21 of the flame hole cup 20. portion passes through the gap S to the flame hole cup 20.
Since the structure is configured such that the flame is supplied from the periphery of the ceiling of the flame hole cup 20 and combusted, a small flame is formed on the periphery of the ceiling of the flame hole cup 20, and the flame holding effect for combustion is improved in the flame hole 3, and flame lift occurs. suppress. Furthermore, since the small hole 23 is covered with the wire mesh 9, the flame holding effect in the small hole 23 portion is further ensured. In addition, the small holes and gaps improve the cooling effect, eliminating overheating in the vicinity of them.
The occurrence of backfire is suppressed. In addition, the flame in the gap facilitates self-heating of the vaporizer,
Therefore, the carburetor can be made more compact and the ignition waiting time can be shortened. In particular, a flame-holding wire mesh is attached extending from the top surface of the flame hole cup to the upper half of the side wall, and spot welded between the inside of the flame hole on the top surface of the flame hole cup and the upper half of the side wall. Since it is fixed, there is no need to weld and fix the wire mesh around the upper surface of the flame hole cup, and thus the flame hole can be placed closer to the periphery and the combustion radius can be increased. That is, by reducing the diameter of the flame hole cup, the combustion radius can be increased, and the apparatus can be made more compact.

<Example> FIG. 1 is a plan view of an implementation device of the present invention, and FIG. 2 is a sectional view.

The flame hole cup 20 is fitted into the upper opening of the carburetor 1, and the lower part of the side peripheral wall 21 of the flame hole cup 20 is seated and fixed on the inner step 1a of the carburetor 1 using a cylindrical support bolt 6 and a nut 7. has been done. A flame hole 3 is provided in the ceiling portion 22 of the flame hole cup 20, and a small hole 8 is provided near the flame hole 3. The flame hole cup 20 is configured such that the upper half of its side peripheral wall 21 forms a gap S between it and the inner wall surface of the vaporizer 1, and a small hole 23 is provided in the upper half. .

On the other hand, flame holding wire meshes 9 and 10 are fixed to the flame hole cup 20 by spot welding on the upper and lower surfaces of the ceiling portion 22 of the flame hole cup 20, respectively. The wire mesh 9 on the upper surface side is attached to the upper half of the side peripheral wall 21 of the flame hole cup 20 so as to cover the small hole 23,
It is fixed by spot welding 11 at an appropriate position in the upper half and inside the flame hole 3 on the upper surface of the ceiling part 22.

The fuel vaporized in the vaporizer 1 is transferred to the flame hole cup 20.
is mainly combusted through the flame hole 3 to form the main flame. Further, the fuel passing through the small holes 8 in the ceiling portion 21 forms a small flame, preventing the main flame from lifting and maintaining flame stability. A part of the vaporized fuel rises through the small hole 23 in the upper half of the side peripheral wall 21 of the flame hole cup 20 along the wire mesh 9 through the gap S, and reaches the periphery of the ceiling portion 22 of the flame hole cup 20 and the wire mesh 9 on the side periphery. It forms a small flame and burns.

The flame hole cup 20 is fixed on the outside of the wire mesh 9 for flame holding.
Since this is done in the side peripheral wall 21 of the flame hole cup 20, the flame hole 3 can be arranged closer to the outer peripheral edge of the ceiling portion 22 of the flame hole cup 20. As a result, the burner can be made smaller.

<Effects> The present invention has the above configuration, and the flame hole cup 20
A gap S is provided between the carburetor 1 and the periphery of the flame hole cup 20, and a portion of the vaporized fuel is supplied through the wire mesh 9 from the small hole 23 provided in the side peripheral wall 21 of the flame hole cup 20 for combustion. The effect of the small holes 23 and the wire mesh 9 can significantly improve the flame-holding effect, and the wire mesh 9 for flame-holding is installed extending from the upper surface of the flame hole cup 20 to the upper half of the side peripheral wall. Since the position inside the flame hole 3 on the upper surface of the flame hole cup 20 and the outer surface of the upper half of the side peripheral wall 21 of the flame hole cup 20 are welded and fixed, the small hole 23 for flame stabilization in the side peripheral wall 21 is fixed. In addition to improving flame retention in
The flame hole 3 provided on the upper surface of the flame hole cup 20 can be arranged closer to the periphery, and the combustion radius can be increased accordingly. Therefore, it is possible to provide a device that is compact and has a large combustion range.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an apparatus for implementing the present invention, and FIG. 2 is a sectional view. 3 and 4 are a plan view and a sectional view of a conventional device. 1... vaporizer, 3... flame hole, 8... small hole, 9,
10...wire mesh, 11...spot welding, 20...
Flame hole cup, 21...Side peripheral wall of flame hole cup, 22
...Ceiling of flame hole cup, 23...Small hole, S...
gap.

Claims (1)

[Scope of utility model registration request] A liquid fuel combustion device that mixes liquid fuel such as petroleum with air in a vaporizer, vaporizes it, and burns it through a flame hole in the ceiling of a flame hole cup that is inserted and fixed into the opening at the top of the vaporizer. Atsushi, vaporizer 1
The flame hole cup 20 that is fitted and fixed in the upper opening has a gap S between the upper half of its side circumferential wall 21 and the inner wall surface of the vaporizer 1, and the side circumferential wall of the flame hole cup 20 There is a small hole 23 in the upper half of 21 for flame retention.
At the same time, a wire mesh 9 for flame holding is installed in the flame hole cup 2.
The side peripheral wall 21 covers the small hole 23 from the upper surface of the
The wire mesh 9 is attached by extending to the upper half, and the wire mesh 9 is welded and fixed at a position inside the flame hole 3 on the upper surface of the flame hole cup 20 and the outer surface of the upper half of the side peripheral wall 21 of the flame hole cup 20. Characteristics of liquid fuel combustion equipment.