JPH0414242B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a gun-type burner for vaporizing combustion that vaporizes oil such as kerosene and burns it with green flame.

Prior art and its problems This type of gun-type burner sprays oil from a nozzle to atomize it, and ignites and burns the atomized oil.As a device for complete combustion, a combustion tube is used. The oil is ejected from the nozzle towards the rotating scattering plate installed inside, and the oil is ignited and first heats the rotating scattering plate, and then the ejected oil is heated, becomes a fine mist, vaporizes, and burns with blue flame. However, in this case, in order to simplify the rotation mechanism, the rotating scattering plate and the air blower for supplying combustion air are mounted on the same axis, so the air blower is necessarily an axial flow fan with a large fan diameter. As a result, the entire device is complicated and large, and the manufacturing cost is high.

Purpose of the Invention In view of the above-mentioned drawbacks, the present invention simplifies the device structure, completely eliminates the drawbacks of the conventional device which is complicated and large in size, and also enables green flame combustion in response to changes in oil amount. The purpose of the present invention is to provide a high-performance gun-type burner for vaporization combustion that reliably performs combustion and improves combustion efficiency.

Structure of the Invention The gun-type burner for vaporizing combustion of the present invention is provided with a combustion tube made of a cup-shaped cylinder inside a combustion gas discharge tube through a gas air passage, and a combustion tube made of a hollow cylinder is provided inside the combustion tube. A refueling cylinder connected to a blower is provided on one side of the exhaust pipe, and a ventilation cylinder is connected to a discharge port of the cylinder, and a refueling cylinder is connected to a discharge port of the cylinder. is fitted into the hollow cylindrical body of the collision body so as to be movable back and forth, and a moving device is connected to the exhaust pipe to move the hollow cylindrical body of the collision body back and forth. The present invention is characterized in that an injection nozzle device is provided in the combustion cylinder to inject vaporized oil into the combustion cylinder through the combustion cylinder.

DESCRIPTION OF EMBODIMENTS The configuration of the present invention will be explained based on the drawings.
Reference numeral 1 denotes a combustion gas exhaust pipe having an exhaust port 2 on one side, and a combustion pipe 4 made of a cup-shaped cylinder is fixed inside the exhaust pipe 1 via a gas air passage 3.
A vaporizing collision body 5 made of a hollow cylinder is fitted into the inside of the exhaust pipe 1 and fixed loosely therein, and a refueling cylinder 7 connected to a blower device 6 is provided on one side of the exhaust pipe 1.
A refueling cylinder 9 is connected to the discharge port 8 of the machine cylinder 7,
The sending cylinder 9 is fitted into the hollow cylinder of the collision body 5 so as to be movable back and forth, and the exhaust cylinder 1 is equipped with a moving device 1 comprising a transverse feeding mechanism 10 and an electric motor 11 for forward and reverse rotation.
2 are connected to move the hollow cylinder of the collision body 5 back and forth, and the injection nozzle 13 is installed inside the cylinder 7.
and an ignition electrode 14.
is provided to eject vaporized oil into the combustion tube 4 through the hollow cylinder of the collision body 5,
Reference numeral 16 indicates an oil volume control valve for liquid fuel such as kerosene supplied to the injection nozzle 13, 17 indicates an air volume control valve for regulating the amount of fuel air sent to the aircraft cylinder 7, 18 indicates a skirt portion of the combustion tube 4, and 19 indicates the skirt. The combustion part 20 is formed between the part 18 and the vaporizing collision body 5, and the combustion tube 4
The fixing rod 21 is a support rod that fixes the vaporizing collision body 5.

The operation of the above configuration will be explained below. When the air volume control valve 17 is opened to send an appropriate amount of fuel air into the machine cylinder 7 in which the injection nozzle device 15 is built, and the oil volume control valve 16 is then operated to open the injection nozzle 13, the injection nozzle 13 The oil is ejected at a constant ejection angle, passes through the feed cylinder 9, and collides with the inner peripheral surface of the hollow cylinder of the vaporizing collision body 5, and a part of it collides with the inner bottom surface of the combustion cylinder 4. The area is filled with atomized oil. When ignited by the ignition electrode 14, the atomized oil burns and heats the hollow cylinder of the collision body 5 and a part of the combustion tube 4 surface to a high temperature in a short time, and is then injected. The oil is vaporized by receiving the latent heat of the vaporizing collision body 5, etc., and
The vaporized oil flows out along the inner surface of the combustion tube 4 through the outer circumferential surface of the hollow cylinder of the collision body 5 in the direction of the solid line arrow in the diagram, and during this time, combustion begins due to heat radiation from the outer circumferential surface of the cylinder. At the same time, in the combustion section 19 of the combustion tube skirt section 18, green flame is combusted by the combustion air that has also flowed in from the combustion tube 7, and the combustion gas flows out into the gas air passage 3, and the combustion gas flows into the combustion gas exhaust tube 1. and is discharged outside the machine from the exhaust port 2.

This type of gun-type burner is often used in the hot air generator of grain driers, and in grain driers, the amount of grain loaded in the grain tank (the height of the grain layer) is Fuel (kerosene) at a fixed temperature
Adjust the supply amount accordingly. In addition, when increasing the drying temperature by increasing the amount of fuel supplied, it is necessary to adjust the collision area of the vaporizing collision body 5 appropriately according to the change in oil amount. 30m/m, tube length 100m/m, tube thickness 2.0m/m)
In the configuration of the vaporizing impactor and the ventilation cylinder (tube length 70m/m), the travel distance (L) of the impactor is 0m/m when the oil amount is 1.2/H, and the travel distance of the impactor is 0m/m when the oil amount is 4.6/H. (L) 50m/m, respectively, and the temperature of the combustion tube 4 at that time is in the range of 800℃ to 850℃, so under the above specific conditions, blue flame combustion is caused by the amount of oil and the impact of the colliding body. This can be ensured by a relative adjustment to the travel distance.

Next, the control device 2 for the moving distance of the vaporization colliding body 5
2 will be explained with reference to FIG. The measurement signal of the potentiometer 23 provided on the oil amount control valve 16 for supplying oil to the injection nozzle 13 is input to the increase/decrease determination circuit 24 to determine increase/decrease in the fuel flow rate, and the determination signal is sent to the motor forward/reverse drive circuit 25. Enter electric motor 11
is rotated forward or reverse, and the hollow cylinder of the collision body 5 is moved forward or backward together with the exhaust pipe 1 via the transverse feed mechanism 10, gradually changing the moving distance L of the collision body 5, and the signal is The signal is input to the motor control circuit 26. On the other hand, the measurement signal of the temperature sensor 27 provided in the combustion tube 4 is inputted to the comparison circuit 29 via the temperature detection circuit 28, and the comparison circuit 29 receives the setting signal from the temperature setting device 30 (for example, the above-mentioned green flame combustion temperature 825° C.), and based on the matching signal, a control signal is generated from the motor control circuit 26 to stop the electric motor 11.

Claim 2 provides that the electric motor 11 for forward and reverse rotation of the moving device 12 rotates forward and reverse depending on the change in the amount of oil supplied to the injection nozzle device 15, and the temperature sensor provided in the combustion tube 4 Since the engine is stopped in response to the measurement signal No. 27, the control action exemplified by the control device 22 is carried out, and there is an effect that automatic control of green flame combustion based on changes in the amount of oil can be achieved.

It should be noted that the structure of the combustion tube, vaporization colliding body, etc. of the present invention is not limited to the drawings, and can of course be modified as appropriate. In some cases, a plurality of openings are provided on the circumferential surface, and flame is ejected from each opening to the side of the combustion cylinder to perform blue flame combustion.

Effects of the Invention As explained above, according to the present invention, a vaporizing collision body made of a hollow cylinder is fitted inside a combustion cylinder made of a cup-shaped cylinder, and Since the vaporized oil is injected into the combustion tube and combusted, the device structure is simple and compact, completely eliminating the drawbacks of the conventional devices that are complicated and large. It vaporizes and burns due to heat radiation outside the cylinder, and the collision distance of the vaporizing collision body can be adjusted.
Green flame combustion is reliably carried out in accordance with the amount of oil, improving combustion efficiency, and also has the effect of maintaining a good working environment without generating soot or combustion noise.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the device, and FIG. 2 is a block diagram of its control device. 1... Combustion gas exhaust stack, 2... Exhaust port, 3... Gas air path, 4... Combustion pipe, 5... Collider for vaporization, 6... Air blower, 7... Refueling cylinder, 8... Discharge port, 9... Refueling Feed cylinder, 10... Transverse feed mechanism, 11... Electric motor for forward and reverse rotation, 12... Movement device, 13... Injection nozzle, 14...
Ignition electrode, 15... Injection nozzle device, 16... Oil amount adjustment valve, 17... Air volume adjustment valve, 18... Skirt part,
19... Burning part, 20... Fixed rod, 21... Support rod, 22
...control device, 23...potentiometer, 24...increase/decrease discrimination circuit, 25...motor forward/reverse drive circuit, 26...
Motor control circuit, 27...Temperature sensor, 28...Temperature detection circuit, 29...Comparison circuit, 30...Temperature setter, L...Movement distance.

Claims (1)

[Scope of Claims] 1. A combustion tube made of a cup-shaped cylinder is fixedly installed inside the combustion gas exhaust stack via a gas air passage, and a vaporizing collision body made of a hollow cylinder is fitted inside the combustion tube. A refueling cylinder connected to an air blower is provided on one side of the exhaust pipe, and a blower cylinder is connected to the discharge port of the cylinder, and the blower cylinder is connected to the collision body. The hollow cylindrical body is fitted into the hollow cylindrical body so as to be movable back and forth, and a moving device is connected to the exhaust pipe to move the hollow cylindrical body of the collision body back and forth. 1. A gun-type burner for vaporization combustion, characterized in that an injection nozzle device for ejecting vaporized oil into the cylinder is provided in the cylinder. 2. Scope of Claims in which the electric motor for forward and reverse rotation of the moving device rotates forward and reverse depending on the change in the amount of oil supplied to the injection nozzle device, and is stopped in response to a measurement signal from a temperature sensor provided in the combustion cylinder. The gun-type burner for vaporization combustion according to item 1.