JPS636569Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a liquid fuel vaporization burner that vaporizes and burns liquid fuel such as kerosene, and aims to improve assembly and workability and stabilize combustion. It is.

The present invention will be described below based on illustrated embodiments. FIG. 1 is a simplified sectional view showing an example of a liquid combustion device using the liquid fuel vaporization burner of the present invention.
1 is a combustion blower, 2 is an air supply pipe whose one end is connected to the air outlet of this blower, 3 is an air injection nozzle connected to the other end of this air supply pipe, and 4 is provided in the middle of the air supply pipe 2. Air flow control valve, 5 is an oil tank, 6 is an oil pan, 7 is a constant oil level device that always maintains a constant oil level with a float 8, 9 is a fuel supply pipe, one end of which is connected to the bottom of the oil level device 7. The middle part penetrates into the air supply pipe 2 near the air injection nozzle 3, and the other end becomes a thin tube 10 and the tip fuel supply port 11
is arranged facing the throat of the air injection nozzle 3. 12 is a bypass pipe that guides the air static pressure in the air supply pipe 2 to the upper space in the oil level regulator 7; 13 is a combustor; A cylindrical burner case 15 made of metal and having an open upper surface is housed therein.

The burner housing 15 includes a container-shaped carburetor 16 and a throttle plate 17 fixed to the upper surface of the carburetor with a screw fitting a.
It consists of a burner head 18 placed and fixed on the upper surface of this diaphragm plate, and a vaporization heater 19 is embedded in the wall of the vaporizer 16. burner head 18
As shown in FIG. 2, it is composed of a plurality of laminated plates 18a, 18b, 18c, .

21 is a flame-holding wall, which is the flame opening 20 of the burner head 18.
A cylindrical wall 21a formed to cover the outer periphery and a disc wall 21b placed on the collar 22 of the carburetor 16.
It consists of

The shear heat case 13 has a cylindrical shape with an open top, surrounds the outer periphery of the carburetor 16 while maintaining an appropriate space 23, and has an ignition plug 2 on the top.
4. Flange surface 2 to which a flame detection rod (not shown) etc. can be fixed
5 is provided. 26 is a fixing plate for the ignition plug 24, 27 is a through hole for guiding the outlet 19b of the vaporizing heater 19 to the outside of the shear heating case 14, 28 is a partition plate that closes the through hole, and 29 is an air supply pipe at one end. 2. The other end is an air pipe connected to the side surface of the shear heating case 14, which blows the air from the blower 1 into the space 23 provided on the outer periphery of the vaporizer 16 and the inner periphery of the shear heating case 14. It functions to cool the outer peripheral surface of the vaporizer 16.

Next, the operation of the combustion device having the above configuration will be explained.

The air from the combustion blower 1, which has been preheated by the vaporization heater 19, and the oil from the oil level regulator 7, which has been pressure-fed by the static pressure in the air supply pipe 2, are mixed into a gas-liquid mixture. Coming in. Then, it instantly becomes gaseous inside the vaporizer 16, passes through the diaphragm plate 17 and reaches the flame port 20 of the burner head 18, where it is ignited by the ignition plug 24.
A flame is formed between the outer periphery of the burner head 18 and the inside of the flame-holding wall 21. After combustion, the vaporization heater 19
The heat required to vaporize the kerosene is transmitted to the wall surface of the vaporizer 16 because the flame stabilizer wall 21 or burner head 18 is heated by the flame, and the heat recovered from the flame vaporizes the kerosene. At this time, the amount of heat recovered from the flame is very large, and it is necessary to cool the outer circumferential surface of the vaporizer 16 for safety reasons, so air is flowed into the outer circumference of the vaporizer 16 and the space 23 inside the shear heating case 14. to cool the vaporizer 16 and control the temperature. At this time, the air flowing into the space 23 flows through the through hole 27 of the outlet 19b of the vaporization heater 19.
If more water flows out, the cooling effect of the vaporizer 16 will be reduced, so the through hole 27 of the shear heating case 14 is closed with a partition plate 28 to prevent leakage.

In the above, the laminated burner head 18 is
As shown in the figure, the laminated plates 18a, 18c, 18d,
A protrusion 30 is provided on the outer periphery of the laminates 18b and 18g without the protrusion 30.
They are stacked together with e in a predetermined order, piled up and crimped together to form one burner head assembly, and the crevice 20 is formed by the gap formed between the protrusions 30.

Conventional laminated burner heads are, for example,
As shown in Publication No. 80425, the head was assembled at the same time as being attached to the burner casing, and was assembled integrally by inserting each piece into a threaded rod and tightening with nuts. Therefore, it is necessary to stack the sheets one by one by aligning the threaded rod insertion holes provided in each laminate, which reduces assembly efficiency.
The workability is poor, and the threaded rod is located near the flame opening and becomes an obstacle that disturbs the flow of vaporized gas.
This was one of the factors that made combustion unstable.

In order to solve these problems, the present invention is designed to integrally connect a plurality of laminated plates assembled into a burner head by caulking them in the same mold.

An embodiment of the present invention will be described in detail below with reference to FIGS. 3 to 5. The one shown in FIG. 3 is a laminated plate 18a with a plurality of caulking pieces 31 formed on the inner circumference.
4 shows the main parts of each laminate, a is an enlarged view of section B in FIG. 3, b is an enlarged view of the notch 32 formed in another laminate 18g, and c is an enlarged view of a notch 33 formed in yet another laminate 18b. Here, a claw portion 31a is formed at the tip of the caulking piece 31, and the gap between the width l ₁ of the claw portion 31a and the widths l ₂ and l ₃ of the cutout portions 32 and 33 is l ₂ <l _{1 .}
The relationship is <l ₃ .

The caulking piece 31 is the laminated plate 18c, 18.
Similarly, the notches 32 are formed in the laminated plates 18a, 18c, 1 after the caulking piece 31 is bent.
8e, the notch 33 is further formed by the laminated plates 18d, 18.
f are formed in the same way.

Each of the laminated plates 18a, 18b, 18 on which either of the caulking pieces 31 or the notches 32, 33 is formed.
c... in the same mold in order, and caulking piece 31
By bending it inward with a mold and crimping it, the claw portion 31a of the crimping piece 31 is formed as shown in FIG.
is engaged with the notch 32 and each laminated plate 18a, 18
b, 18c... are integrally coupled. By configuring the burner head in this way, when assembling the burner head, it is possible to assemble the burner head into the burner casing after being integrally connected in advance, which eliminates the work of aligning the threaded rod insertion holes one by one as in the conventional method. This is no longer necessary, improving ease of assembly and workability. In addition, since the plurality of laminated plates 18a to 18g are connected to each other at the inner periphery, the connecting portion is located at the part farthest from the flame mouth, and the flow of vaporized gas by the connecting portion to the flame mouth. The effects of this can be minimized and combustion can be stabilized.

As described above, in the present invention, the burner head is constructed of a plurality of donut-shaped laminated plates, and these laminated plates are laminated in a predetermined order by forming an appropriate number of caulking pieces or notches. Since each laminate is integrally connected by bending the caulking piece and engaging the notch, it is possible to separate the connecting portion that connects each laminate far from the flame opening. In addition to stabilizing combustion, the burner head can be integrally connected in advance before being assembled into the burner casing, which significantly improves assembly and workability and reduces cost.

[Brief explanation of the drawing]

FIG. 1 is a simplified cross-sectional view of a combustion apparatus using a liquid fuel vaporizing burner of this invention, and FIG. 2 shows a burner head, where a is a plan view and b is a partial side view. 3 is a plan view of the laminate, FIG. 4 is an enlarged view of the main part of the laminate, a is an enlarged view of section B in FIG. 3, and b and c are enlarged views of the notch. FIG. 5 is an enlarged sectional view taken along the line A--A in FIG. 2a. 18 is burner head, 18a, 18b, 18c
... is a laminated plate, 20 is a flame port, 30 is a protrusion, 31 is a caulking piece, and 32, 33 are notches.

Claims (1)

[Scope of utility model registration request] The burner head is equipped with a burner head having a large number of flame ports at the opening of a cylindrical burner case with an open top, and the liquid fuel is vaporized in the burner case and then combusted at the burner ports, and the burner head is donut-shaped. These laminates are made of a plurality of laminated plates with an appropriate number of caulking pieces or notches formed on the inner circumference and laminated in a predetermined order, and each laminated plate is made by bending the caulking pieces. A liquid fuel vaporizing burner characterized in that the burner is integrally connected by engaging with the notch.