JPS62142912A - Burner - Google Patents

Abstract

PURPOSE:To achieve full mixing of air and petroleum in a carburetor to improve the combustion characteristics by providing on the upper face of a carburetor a mixture flow straightening plate which has many specified holes with a specified size of outer diameter in the vertical direction. CONSTITUTION:On the upper face of a carburetor cylinder a mixture flow straightening plate 28 and a cylindrical air hole plate 29 provided with many small holes, and an air hole plate cap 30 are provided. With this constitution the mixture flow straightening plate has hole diameter which is sufficiently smaller in comparison with the plate thickness of the mixture flow straightening plate and which is also smaller than the other sections so that the resistance to the passing blast near the side face of the carburetor cylinder opposite to an air insertion hole will become larger. The mixture air which mixes petroleum and air is revolved to be mixed fully in a carburetor chamber 34 by partition of the mixture flow straightening plate with many holes, and discharged from flow straightening holes 32 to a pre-mixture room 33.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a combustor for burning fuel such as petroleum.

BACKGROUND TECHNOLOGY A conventional example used in an oil combustor will be described with reference to FIG.

The oil supplied from the fuel supply pipe 1 is delivered to the bottom surface 3 of the carburetor cylinder 2.
Alternatively, it is dripped onto the side surface 4. Then, the air is vaporized on the bottom or side surface of the vaporization cylinder, which has been heated to a high temperature by the heating wire 5, and is mixed in the vaporization chamber 7 with the air blown through the air insertion tube 6, and is then passed through the mixing plate 8 and the constriction part 9. Premixing chamber 1
sent to 0. The mixed air in the premixing chamber is
1, it is ignited and burned. 1
2 is a pore plate camp, 13 is a flame, and 14/fi is a pore plate.

Problems to be Solved by the Invention In a combustor with such a configuration, since the diameter of the constricted part of the mixing plate is large, most of the air inserted through the air insertion hole is directly absorbed without swirling in the vaporization chamber. It flows into the premixing chamber from the constriction part.

As a result, the mixed air that has flowed in is released from the pores on the side of the pore plate facing the air insertion hole, and the amount of mixed air in that area increases, making it impossible to obtain a uniform flame distribution in the circumferential direction of the combustor. . In addition, there was little swirling in the vaporization chamber, making it difficult to mix the air and vaporized oil, making it difficult to control the amount of combustion and resulting in poor exhaust gas characteristics.

The present invention solves such conventional problems by constructing the partition between the vaporization chamber and the premixing chamber with a perforated plate, and reducing the diameter of the hole near the side surface facing the air insertion hole of the vaporization chamber. By configuring the structure so that the air ventilation resistance is higher than other parts, mixing in the vaporization chamber is improved, and
The purpose is to make the discharge distribution of mixed air from the pores of the porous plate uniform in the circumferential direction, to accurately control the amount of combustion, and to improve exhaust gas characteristics.

Means for Solving the Problems The present invention, which solves the above-mentioned problems, comprises: a concave vaporizing cylinder with a heating wire built into its side surface; an air insertion hole in the side surface of the vaporizing cylinder; and a connection to the air insertion hole. a pipe-shaped air insertion tube for controlling the mixture, and a fuel supply tube on the central axis of the air insertion tube; The rectifier plate has a hole diameter near the side of the vaporization cylinder facing the air insertion hole that is sufficiently smaller than the thickness of the mixing rectifier plate, and the hole diameter in other parts is larger than the thickness of the mixing rectifier plate. The structure includes a cylindrical porous plate having a large number of small holes on the side of the upper KI'i, and a porous plate cap covering the upper part of the porous plate.

Function The present invention uses the above-described configuration to sufficiently mix air and oil in the vaporization chamber, improve combustion characteristics, improve exhaust gas characteristics, and facilitate accurate control of combustion amount. .

Further, due to the ventilation resistance distribution of the mixing straightening plate, the discharge distribution of the mixed air in the circumferential direction of the porous plate can be made uniform, and a uniform flame can be obtained in the circumferential direction.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in FIG. 1, a concave vaporizing cylinder 21 has a heating wire 23 built into its side surface 22, an air insertion hole 24 for supplying air and fuel at the bottom of the side surface, and an air insertion tube 25 and a fuel supply tube. Connect tube 26. The fuel supply pipe 26 is connected to the air insertion pipe 2
5, the oil is dripped onto the bottom surface 27 of the vaporizer cylinder by the wind pressure of the blown air. moreover,
The upper surface of the vaporization cylinder was provided with a mixing rectifier plate 28, a cylindrical porous plate 29 having a large number of small holes, and a porous plate cap 30 for closing the upper part of the porous plate. Here, the mixing straightening plate is made so that the hole diameter is sufficiently smaller than the thickness of the mixing straightening plate so as to increase the ventilation resistance near the side of the vaporizer cylinder facing the air insertion hole. I configured it. FIG. 2 is a plan cross-sectional view taken at the mixing rectifier plate section, and illustrates the distribution of the rectifying holes 32 of the mixing rectifier plate.

In such a configuration, the mixed air containing petroleum and air is passed through the vaporization chamber 3 by the partition of the mixing baffle plate with small holes.
4 , the mixture is thoroughly mixed, and then sent out from the rectifying hole 32 to the premixing chamber 33 . At this time, the rectifying hole near the side surface of the vaporizer cylinder facing the air insertion hole 24 has a smaller hole diameter than other parts, and the diameter is sufficiently smaller than the thickness of the mixing rectifying plate. . Therefore, the sufficiently mixed mixed air is flowed through the straightening holes 32, and is also distributed in the pores 3 of the porous plate depending on the distribution of the hole diameters of the mixing straightening plate.
It is possible to make the amount of mixed air released from 1 uniform in the circumferential direction.

Effects of the Invention As described above, according to the present invention, the above-described configuration allows sufficient mixing of air and oil in the vaporization chamber, improving combustion characteristics, improving exhaust gas characteristics, and accurately controlling the amount of combustion. It makes it possible to do so. Further, due to the ventilation resistance distribution of the mixing straightening plate, the mixed air distribution in the circumferential direction of the porous plate can be made uniform, and a uniform flame can be obtained in the circumferential direction.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a combustor according to an embodiment of the present invention, and FIG.
The figure is a plan sectional view of the same combustor, and FIG. 3 is a side sectional view of the conventional combustor. 21... vaporizer cylinder, 23... heating wire, 2
4... Air insertion hole, 25... Air intrusion pipe, 26... Fuel insertion pipe, 28... Mixing rectifier plate, 29...・Stomata plate, 30...
Pore plate cap, 31... Pore portion. Name of agent: Patent attorney Toshio Nakao and 1 other person27
--- ”
24--1 Air pusher J25-11 Air pusher pipe Figure 2

Claims (1)

[Claims] A concave vaporizer tube with a built-in heating wire on the side surface, an air insertion hole in the side surface of the vaporization tube, a pipe-shaped air insertion tube connected to the air insertion hole, and a fuel supply on the central axis of the air insertion tube. A porous mixing rectifying plate having vertical holes on the upper surface is provided on the upper surface of the vaporizing cylinder, and the mixing rectifying plate has a hole diameter near the side surface of the vaporizing cylinder opposite to the air insertion hole. The pore diameter in other parts is sufficiently small compared to the thickness of the current plate, and the pore diameter in other parts is larger than that. A combustor with a vent plate cap that covers the top of the plate.