JPS594602B2 - liquid fuel combustion equipment - Google Patents

Description

Detailed Description of the Invention The present invention sends a part of liquid fuel centrifugally atomized by an atomizer and primary air to a vaporizer, burns the generated vaporized fuel mixture, and uses a damper to This relates to a liquid fuel combustion device that simultaneously changes the delivery amount of atomized fuel and primary air, and its purpose is to stabilize combustion and prevent deterioration of fuel oil.

In other words, the above-mentioned combustion device sends a part of the atomized fuel generated by the atomization device to the vaporization device and returns the rest to the fuel sub-tank, so it is possible to obtain a small amount of combustion, and the atomized fuel and air Since the damper changes the delivery amount of the fuel and the fuel at the same time, the air-fuel ratio can always be kept constant and a wide range of combustion amount adjustment can be obtained.

However, the vaporization device has an electric heater for fuel vaporization, and it becomes high temperature due to the influence of the combustion flame, causing heat to enter the atomization device that is connected to the vaporization device. Although it is inserted, a slight rise in temperature is unavoidable.

When the temperature of the atomizer increases, fuel oil vaporization becomes active within the atomizer, disturbing the air-fuel ratio sent to the atomizer, and fuel being returned from the atomizer to the fuel subtank. The temperature of the oil increases and the oil is recycled repeatedly, causing its quality to change.

Therefore, there were safety problems such as stability during continuous combustion and the occurrence of backfire.

The present invention aims to improve the above-mentioned drawbacks. Next, embodiments of the present invention will be described with reference to the drawings.

In FIGS. 1 to 5, reference numeral 10 denotes an atomization container with a cylindrical inner surface, a rotary plate 22 is disposed approximately in the middle of the container, and one side of the cylindrical surface is opened to form an atomized fuel outlet. 11 is formed.

12 is a cylindrical damper that is inscribed in the atomization container 10 and is rotatable; a damper shaft 14 is provided at the top; 17 is an adjustment lever connected to this; and a gasket 15 that is in contact with the top surface.
seals the upper part of the atomization container 10 together with the lid 16.

Reference numeral 1 denotes a carburetor cylinder whose lower side is opened to protrude an atomized fuel filling section 4, which is communicated with the atomized fuel outlet section 11 with a heat insulating material 9 in between.

2 is an electric heater, above which a partition plate 5 and a burner cap 6 are arranged to form a lower flame.

A fan case 18 having a fan impeller 23 is provided below the atomization container 10, and a lower cylinder '19 partitioned by a support plate 26 on which a motor 20 is mounted is provided below the fan case 18.

Further, a pump case 28 having a pump impeller 24 is connected below the sub-tank 27 suspended on the support plate 26. Reference numeral 21 is a rotation shaft of the motor 20, and the rotation plate 22 is connected to the rotation plate 27.
A fan impeller 23 and a pump impeller 24 are driven.

Reference numeral 29 denotes an oil supply pipe that communicates the pump case 28, the discharge side, and the atomization container 10, and is opened toward the upper surface of the rotary plate 22.

Reference numeral 30 indicates a drain pipe that communicates between the atomization container 10 and the sub-tank 27, and reference numeral 31 indicates an oil supply pipe 25 that communicates between the sub-tank 27 and the leveler 32, which is an air suction port formed in the lower cylinder 19.

13 is an opening obtained by cutting out the cylindrical surface of the damper 12.

The heat insulating material 9 has an L-shaped cross section and comes into contact with the vaporizer cylinder 1,
abutting the atomization container 10 and forming an annular cavity 37;
A plurality of ventilation holes 38 are formed on the inner surface and are inclined toward the vaporization cylinder side.
has.

The air discharged from the fan case 18 is divided into two systems, one of which is supplied to the annular cavity 37 through a wind conduit 34, and the other is supplied to the atomization container through a cavity 35.

36 is an air damper arranged in the wind pipe.

The operation of this embodiment configured as described above will be explained below. The fuel oil is supplied to the atomization container 10 and also to the vaporization cylinder 1 through the annular cavity 37 and the vent hole 38, and at the same time, the pump impeller 240 rotates to cause the fuel oil to continuously flow down onto the rotary plate 22 in a quantitative manner.

The fuel is sent in the form of atomized particles from the entire periphery of the rotating plate 22 due to centrifugal force, but most of the fuel is blocked by the damper 12 and flows downward, returning to the sub-tank 27.

Further, some of the atomized particles pass through the opening 13 of the damper 12 and hit the heating wall of the vaporizer cylinder 1, where they are immediately vaporized.

At the same time, the air supplied to the atomization container 10 also passes through the opening 13, and when passing through the communication connection, it is combined with the air flowing in through the vent hole 38 and sent to the vaporization cylinder 1.

The vaporized fuel mixture that has thus passed through the partition plate 5 is ejected from the lower flame, and is ignited and combusted.

If the excess or deficiency of primary air is adjusted by the air damper 36, a complete combustion flame can be obtained.

To adjust the combustion amount, operate the adjustment lever 17 and move the damper 12.
If the opening degree of the vent hole 38 is changed, the amount of fuel and air sent out from the atomization container 10 will change at the same time, so if the amount of air flowing in from the vent hole 38 is small, the air-fuel ratio will be almost constant and stable combustion will occur. get.

When the amount of air flowing in from the vent hole 38 is set relatively large, the air-fuel ratio can be stabilized by interlocking the opening adjustment of the damper 12 and the air damper 36 (by a method not shown).

Next, considering the temperature rise in the atomization container 10, the high temperature region of the vaporization cylinder 1 moves toward the communication connection part due to continuous combustion, but is largely insulated by the heat insulating material 9 and formed on the atomization container side of the heat insulating material 9. Since the air flowing through the annular cavity 37 and the ventilation hole 38 cools the atomizing container 1.0, the amount of heat entering the atomizing container 1.0 is reduced.

Further, since the atomizing container 10 is cooled by the air supplied thereto, its inner wall is maintained at room temperature.

As described above, the present invention has an excellent adiabatic cooling effect of the atomization device, and maintains the temperature of the atomization device at room temperature even during continuous combustion. It prevents deterioration in quality, provides stable combustion, and does not cause backfire.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of a liquid fuel combustion device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of an atomization container and a vaporization tube of the same liquid fuel combustion device, and FIG. 3 is a cross-sectional view of the same liquid fuel combustion device. FIG. 4 is a perspective view of the atomization tube of the liquid fuel combustion device, and FIG. 5 is a perspective view of the atomization tube of the liquid fuel combustion device. 1... vaporizer cylinder, 2... electric heater,
4... Atomized fuel inlet, 5... Partition plate, 6... Burner cap, 7... Burner port, 9... Insulation material, 10...Atomization container,
11... Atomized fuel outlet, 12... Damper, 13... Opening, 14... Damper shaft, 15... Packing , 16...
・Lid body, 17...Adjustment lever, 18...
・Fan case, 19...Lower cylinder, 20...
... Motor, 21 ... Rotating shaft, 22 ... Rotating plate, 23 ... Fan impeller, 24 ...
...Pump impeller, 25...Air suction port, 2
6...Support plate, 27...Sub tank,
28... Pump case, 29... Oil supply pipe, 30... Drain pipe, 31... Oil feed pipe, 32... Leveler, 34... Curved conduit, 35... air gap, 36... air damper, 37 curved/annular cavity, 38... ventilation hole.

Claims (1)

[Claims] 1. An atomizer that atomizes liquid fuel using a rotating body, a fan that supplies air into the atomizer, a vaporizer connected to the atomizer, and a mist between the vaporizer and the atomizer. a damper provided in the particle atomization path, and a part of the air supplied from the fan to the atomization device is branched and discharged into a connection portion between the atomization device and the vaporization device. Combustion device.