JPS62138614A - Burning device - Google Patents

Abstract

PURPOSE:To reduce the generation of foul odor and white smoke caused by ignition delay at the ignition time by covering flame holes at the lower part of a burner head with wire gauzes installed at the periphery of the burner head and also making an ignition electrode facing flame holes which is placed at the upper part and not covered with this wire gauzes. CONSTITUTION:Fuel and burning air are injected into a vaporizing cylinder 1 heated by a sheathed heater from a discharge hole 2 placed in the cylinder 1 and vaporized to become premixed gas. This premixed gas passing through an opening part 4a placed at the bottom of a burner head 4 and small holes of an equalizing pressure plate 5 is injected from flame holes9a, 9b in a burner plate 4 and ignited by a ignition electrode 12 to form fire flames at the surfaces of an inner wire gauze 7, an outer wire gauze 8, and flame holes 9a. Further, as the upper flame holes 9a facing the electrode 12 is not covered by wire gauzes, burning gas with high concentration is discharged without delay and the generation of foul odor and white smoke caused by ignition delay at the ignition time is prevented.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a combustor.

Conventional technology A conventional combustor is constructed as shown in FIG.

That is, in FIG. 2, reference numeral 1 denotes a carburetor cylinder, which is provided with a discharge port 2 for fuel and combustion air.

A sheathed heater 3 is embedded in the outer periphery of the vaporizing cylinder 1, and a burner head 4 with an opening 4al in the center is placed on top of the sheathed heater 3, and is fixed to the vaporizing cylinder 1 with screws. The burner head 40 also includes a pressure equalizing plate 5 having a plurality of small holes in the cylinder, and a burner cap 6 having a bottomed cylindrical shape on the top thereof.
are attached by holes (1/1/) provided on the burner head 4, respectively. An inner wire mesh 7 and an outer wire mesh 8 are stretched around the inner and outer peripheries of the burner head 4, and a plurality of flame holes 9a and 9b divided into upper and lower sections are provided on the side surface. The outer periphery of the vaporizing tube 1 is covered with a burner case 10 having an open top, and a cylindrical combustion tube 11 is placed on the top of the burner case 10.

The operation of the conventional example configured as described above will be described below. Fuel and combustion air are ejected through a discharge port 2 provided in the vaporization cylinder 1 into the vaporization cylinder 1 heated by a sheathed heater 3, and are vaporized into a premixed gas. This premixed gas passes through the bottom opening 4a of the burner head 4 and the small holes of the pressure equalizing plate 5, and then passes through the flame holes 9a and 9b of the burner plate 4.
A flame is formed on the surface of the outer wire mesh 8.

Problems to be Solved by the Invention However, in the above configuration, since the upper and lower 2F flame holes 9a and 9b provided in the burner head 4 are completely covered with the public metal mesh 8, flame stability is not achieved in 1 strong and weak combustion. However, during weak combustion, the ejection speed of the combustion gas becomes extremely slow, so a flame is formed in close contact with the surface of the public wire mesh 8, and the public wire mesh 8
There were problems with the heat resistance of the wire mesh, such as abnormally high temperatures. In particular, the upper part of the wire mesh was susceptible to high temperatures.

In addition, since the flow rate of combustion gas is suppressed by the public wire mesh 8, when a 1M fire occurs, there is an ignition odor due to the ignition delay.

Ignition may produce white smoke. Furthermore, public wire net 8
Due to the resistance, the pressure inside the burner head 4 is not high.
The problem was that the combustion noise was high.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a wire mesh around the outer periphery of the burner head so as to cover the lower part of the flame hole provided in the burner head, and a wire mesh surrounding the burner head. The structure is such that the ignition electrode faces the flame hole at the top, which is not open.

Function The present invention, with the above configuration, can lower the temperature of the wire mesh during weak combustion, and can solve the problem in the heat resistance of the wire mesh. Additionally, the pressure inside the burner head is reduced and combustion noise is also reduced.

Furthermore, since there is no wire mesh in the flame hole facing the ignition electrode, high concentration combustion gas can be discharged without delay, and generation of ignition odor and odor white smoke due to ignition delay can be prevented.

Example Embodiments of the present invention will be described below with reference to FIG.

In FIG. 1, the differences in configuration from the conventional example described above are as follows:
The public wire mesh 8' stretched around the outer periphery of the burner head 4 is connected to the lower flame hole 9.
The other points are the same as the conventional example except that the ignition electrode 12 is provided only in the upper flame hole 9a and the ignition electrode 12 is provided opposite the upper flame hole 9a.

In the above configuration, fuel and combustion air are ejected through the discharge port 2 provided in the vaporization cylinder 1 into the vaporization cylinder 1 heated by the sheathed heater 3, and are vaporized to become a premixed gas.

This premixed gas flows through the bottom opening 4a of the burner head 4.
, through the small hole of the pressure equalizing plate 5, and the flame hole 9 of the burner plate 4.
a, 9b, and is ignited by the ignition electrode 12, causing the inner wire mesh 7. A flame is formed on the surface of the outer wire mesh 8 and the flame hole 9a.

Since the upper flame hole 9a provided in the burner head 4 is not provided with a wire mesh, the jetting speed of combustion gas becomes faster during weak combustion, and the flame on the surface of the public wire mesh 8' is caused by the wire mesh covering the entire outer peripheral surface. Compared to a certain conventional example, the flame is no longer in close contact with the wire mesh. Therefore, the temperature of the wire mesh is low, and the problem with the heat resistance of the wire mesh can be solved.

In addition, during strong combustion, the pressure inside the burner head increases due to the resistance created by the public metal mesh 8 on the entire outer peripheral surface of the burner head 4, and the ejection speed of the premixed gas increases, causing combustion noise due to flame mutual interference. Although it had the disadvantage of being expensive, the one-piece structure lowers the pressure inside the burner head, slows down the jetting speed of the premixed gas, and reduces combustion noise due to flame mutual interference.

Furthermore, since the upper flame hole 9a facing the ignition electrode 12 is not covered with a wire mesh, highly concentrated combustion gas can be discharged without delay, and the generation of ignition odor and ignition white smoke due to ignition delay is prevented. be able to.

In the above embodiment, the flame hole is divided into upper and lower parts, but the flame hole may be vertically elongated.
In that case, a wire mesh should be installed to cover only the lower part of the flame hole.

Effects of the Invention As is clear from the description of the embodiments, the combustion equipment of the present invention can prevent the temperature of the wire mesh from increasing due to close contact flames, solve the problem in the heat resistance of the wire mesh, and also prevent flames from mutually increasing. Combustion noise due to interference can be greatly reduced, and ignition odor and ignition white smoke noise due to ignition delay can also be reduced.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a combustor in an embodiment of the present invention;
The figure is a cross-sectional view of a conventional combustor. 4... Burner head, 8'... Public wire net,
9a, 9b... flame hole, 12... ignition electrode. Name of agent: Patent attorney Toshio Nakao and 1 other person, 1

Claims (1)

[Claims] The burner head has a plurality of flame holes on its outer circumferential surface, a wire mesh attached to the outer periphery of the burner head, and an ignition electrode facing the flame holes of the burner head, and the wire mesh has a bottom portion other than the upper part of the flame hole. The combustor is attached only to the combustor and the ignition electrode is placed opposite the top of the flame hole.