JPS60155808A - Liquid fuel burner - Google Patents

Abstract

PURPOSE:To provide the titled burner in which complete combustion is substantially maintained and which has a high thermal efficiency even if the spray pattern undergoes any change and the spray pressure for the liquid fuel is lowered, by providing the titled device in front of a liquid fuel spray nozzle and providing mesh-like plate at the front end opening of a cylinder opening at the rear end thereof with an air suction port. CONSTITUTION:To the forward end opening of a cylinder 8 opening at the rear end of a trumpet-shaped air suction port 8a is fitted and secured a mesh type plate 9 made up of a mesh plate 9a and a flame holding plate 9b fitted and secured to the central cut-out portion of the mesh plate 9a. The liquid fuel burner B thus constituted is disposed in front of a mixed gas injection-igniter C. As the combustion progresses, the cylinder 8 and the mesh type plate 9 is red- heated, and ambient sucked air A1 is heated to high temperatures. The flame becomes a blue combustion flame BF and a complete combustion is performed. A part of the flame is held by the flame holding plate 9b of the plate 9, and becomes an ignition source when the flame lifts. Even when the spray pattern changes, the complete combustion is substantially maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a liquid fuel combustion device that improves combustibility by being disposed in front of a liquid fuel spray nozzle.

[Background technology]

FIG. 1 shows a conventional example of a mixture injection/igniter (gun type burner) C. In the figure, 1 is a via to which liquid fuel F is pumped by an electromagnetic bomb 7 (not shown), 2 is a spray nozzle connected to the end of a pipe, 3 is an ignition electrode,
4 is a lead wire from a high-voltage power source (not shown), 5 is a wind cylinder that has a nozzle/L/2 and an electrode rod 3 inside and introduces air A from a fan (not shown), and 6 is a wind cylinder. 7 is a stabilizer (flame tube stabilizer) provided in the wind barrel 5 at the base of the throttle tube 6, and WF is an internal combustion flame.

In conventional gun-type burners of this kind, internal flame combustion is common, and the spray pattern may become distorted due to dirt or scratches in the spray nozzle IV2, or the discharge pressure of the electromagnetic pump may decrease. There were problems in that the sprayed fuel did not diffuse sufficiently into the air A, the mixing ratio decreased, resulting in incomplete combustion, and the generation of soot and the like increased.

In addition, in internal flame combustion, the combustion temperature does not become very high, so there is a problem that the thermal efficiency of devices that utilize the combustion rate, such as oil-fired water heaters, is not high.

[Purpose of the invention]

An object of the present invention is to provide a liquid fuel combustion device that maintains almost complete combustion even when the spray pattern fluctuates or the spray pressure of the liquid fuel decreases, and has high thermal efficiency.

[Disclosure of the invention]

The liquid fuel combustion device of the present invention is arranged in front of a liquid fuel spray nozzle, and includes a cylindrical body with an air suction port opened at the rear end, and a mesoche-like plate provided at the front end opening of the cylindrical body. It is equipped with the following.

The effects of this configuration are as follows. (2) The combustion flame is discharged from the mesh plate while heating the cylinder and the mesh plate.

At this time, the interior of the cylinder becomes negative pressure due to the high-speed spray flow from the nozzle, and the externally heated air surrounding the cylinder 8 is sucked into the cylinder from the air suction port at the rear end of the cylinder. (2) Since the cylindrical body and the meso-shaped plate are red-hot by the combustion flame, fuel with a large particle size in the combustion gas produced by the decrease in fuel discharge pressure is instantaneously vaporized when it comes into contact with the cylindrical body and the meso-shaped plate.

■ Due to the synergistic effect of (2) and (2) above, blue flame combustion occurs and the combustion temperature becomes sufficiently high. Further, even if the spray pattern varies or the combustion discharge pressure decreases, almost complete combustion is maintained, and soot generation is also prevented. As a result of the above, the thermal efficiency is sufficiently high as a whole.

An embodiment of this invention will be described with reference to FIG. Reference numeral 8 denotes a cylinder (throat pipe) having a trumpet-shaped air suction port 8a opening at its rear end.
A mesh board 9a and a mesh board 9a with only the central part removed.
A frame consisting of a flame holding plate 9b fitted and fixed in the central notch of the
A shunt-like plate 9 is fitted and fixed. The liquid fuel combustion device B configured in this way is used by being placed in front of the air-fuel mixture injection/igniter C similar to that shown in FIG. BF is a blue combustion flame, and 80 is high-temperature air sucked into the air suction port 8a from around the cylinder body 8 and in front of and around the mesh-like plate 9.

At the start of combustion, the liquid fuel sprayed from the nozzle 2 diffuses into the air blown from the fan fiA, and the ignition electrode 3
It is ignited by the discharge spark, creating a combustion flame. The surrounding air is sucked into the cylinder 8 through the air suction port 8a, increasing the mixing ratio of liquid fuel and air.

As the combustion progresses, the cylindrical body 8 and the mesh plate 9 become red hot, the temperature of the suction air A becomes high, the flame becomes a blue combustion flame, and complete combustion occurs. A part of the flame is held by the flame holding plate 9b of the plate 9, and serves as an ignition source when there is a lift of the flame. Complete combustion is almost maintained even if there are variations in the spray pattern.

Jin's liquid fuel combustion device B can eliminate the need for air preheating, which is required with a vaporization burner, and is also effective in saving energy. In addition, although it has excellent effects as described above,
The structure is simple and can be manufactured at low cost.

In the above embodiments, (a) the main body of the cylinder 8 is formed into a straight tube shape, (5) the entire cylinder body 8 is formed into a straight tube shape (including the BL air suction port 8a), (el storage Flame plate 9b,
(d) A mesh plate 9 that is attached to the front or rear surface of the central part of a mesh plate 9a without a cutout, (d) A mesh plate 9 that uses a mesh plate 9 that has no cutout, except for the flame holding plate 9b, etc. is also an embodiment of this invention.

〔Effect of the invention〕

According to this invention, based on blue flame combustion and suction of high-temperature air, complete combustion can be performed regardless of spray pattern fluctuations, etc., and the thermal efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional air-fuel mixture injection/igniter, and Fig. 2 is a cross-sectional view of a conventional air-fuel mixture injection/igniter.
It is a sectional view of a state in which it is combined with an igniter. 2... Spray nozzle, 8... Cylindrical body, 8a... Air suction port, 9... Mesh plate, 9g... Mesh plate, 9b... Flame holding plate

Claims (1)

[Claims] (1) A liquid fuel spray nozzle that is disposed in front of the liquid fuel spray nozzle and includes a cylindrical body with an air suction port opened at the rear end, and a nine-mesh-shaped plate installed at the front end opening of the cylindrical body. A fuel combustion device (21) A liquid fuel combustion device according to claim 11, wherein the air suction port is formed in a trumpet shape that widens backward. A liquid fuel combustion device according to claim (1), which has the following.