JPS6024364B2 - liquid fuel combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drip evaporation combustion device for liquid fuel.

Additionally, the method of dropping liquid fuel to evaporate and burn it has a vaporizer that uses an electric heater, etc., and waits for a long time until the fuel evaporates, then ignites the vaporized gas. was.

Therefore, a waiting time was required before ignition. Furthermore, it is relatively difficult to ignite evaporated fuel, and various measures are required to prevent explosive ignition, and it is difficult to set up an inexpensive sequence, such as using a flame rod to detect flame even after ignition. was difficult. Therefore, the present invention solves the above-mentioned problems, and provides a liquid fuel combustion device that has a relatively quick ignition time, eliminates concerns about ignition, etc., and is capable of transitioning to a steady combustion state. The purpose is to provide the following. In the present invention, the heater for vaporization and the heater for ignition are used together, and the evaporator section for pilot combustion and the evaporator section for main combustion are divided into two parts to increase the reliability of ignition and reduce the evaporation area for combustion. By dividing the fuel into two parts and making effective use of them, we can prevent uneven combustion during steady state and improve fire extinguishing performance.

The mechanism and operation of the present invention will be explained below with reference to the illustrated embodiments.

In FIGS. 1 and 2, reference numeral 1 denotes a combustion cylinder, which is made of a metal tube and has a cylindrical shape, and a combustion chamber 2 is formed in the center of the cylinder.

On one side of the interior of the combustion chamber 2, there is a cylinder made concentrically with the combustion cylinder,
An evaporation ring 3 with a reduced diameter is provided concentrically. A bottom plate 4 is attached to the evaporation ring 3, and an impregnated material 5 such as asbestos is wrapped around the upper half of the circumference. A fuel supply pipe 6 is installed in the upper part of the combustion chamber 2,
It is designed to send fuel oil.

The refueling pipe 6 has a pipe end branched into two pipes, and these branch pipes 7 and 8 are introduced into the combustion chamber 2 by passing through the upper wall of the combustion cylinder 1, and drip into the upper part of the evaporation ring 3. It is set as. The oil supply pipe 6 is provided with an on-off valve 9, which allows oil to be supplied or stopped as required. Further, one of the branch pipes 8 separated from the above-mentioned branch part is provided with a thermally responsive valve 10 that responds to the temperature of the combustion tube 1, and when the combustion tube rises to a predetermined temperature after the supplied fuel is ignited, Thermal response valve 1
0 is open, allowing fuel to drip from the branch pipe. The front part of the combustion chamber 2 is an air supply chamber 11, into which air for combustion is sent by a blower (not shown).

The air supply chamber 11 and the combustion chamber 2 are separated by a partition wall 12, and a swirler 13 is attached to this partition wall.
The air that has been turned into a whirlwind by the swirler 13 is blown into the combustion chamber 2 as a whirlwind. The rear part of the combustion chamber is a heat exchange chamber 14 through which the remainder of the combustion flame and the exhaust gas pass. An ignition heater 5 is provided opposite the evaporation ring 3. This ignition heater 15 is provided so as to be in contact with the end of an impregnated material 5 such as asbestos wrapped around the upper half of the evaporation ring 3, and is ignited by energizing it, igniting the fuel that has soaked into the impregnated material. It has the effect of The thermally responsive valve 1 is constructed as shown in FIGS. 3 and 4.

That is, it has a valve chamber 16 communicated with the branch pipe 8, and a valve body 17 is provided in this valve chamber, and this valve body 17 is connected to a spring 1.
8 applies such force that the valve body 17 always closes the fuel passage. A diaphragm 19 is attached to the lower end of the valve body 17, and a disc bimetal 20 is provided at the lower end of the diaphragm 19 to receive heat by contacting the combustion cylinder. Therefore, when the combustion device is extinguished, the disk bimetal 20 is in a straight line, so the osaisen 19 is lowered, and the valve body 17 is connected to the partition plate 21.
The hole 22 is closed. Therefore, fuel does not pass through the branch pipe 8. Next, when the combustion tube 1 is heated, it operates as shown in FIG. That is, when the bimetal 20 bends upward, the valve body 17 is lifted upward by the pushing force 19 against the pressing force of the spring 18, and the partition plate 21
Open the hole 22. The branch pipe 8 is therefore opened to supply fuel to the combustion chamber. Next, the operation of the combustion apparatus of the present invention will be explained as follows.

Fuel is sent from the fuel supply pipe 6 by opening the on-off valve 9 and dripped onto the upper part of the evaporation ring 3 from the branch pipe 7.

Since the evaporation ring is wrapped with an impregnated material such as asbestos, there is no need to worry about it immediately falling downward due to gravity or being blown away by air currents. The impregnated fuel is ignited by an ignition heater 15 placed opposite to form a flame. This ignition method is the same as traditional wick combustion or pot combustion. When the flame becomes larger and the temperature of the combustion cylinder wall surface 1 rises, the thermally-responsive valve 10 operates and fuel is dripped from the branch pipe 8 onto the ignition heater and the surface of the evaporation ring 3 on the reflection side. Even if the underlay heater 5 is turned off, the evaporation ring 3 is heated by the combustion heat and evaporation combustion continues. Combustion air is turned into a swirling air flow by the swirler 13 and integrated into the combustion chamber through the gap 23. As described above, the combustion device of the present invention uses a method of impregnating an impregnated object with liquid combustion material and igniting it, so ignition is safe and reliable.Moreover, the ignition heater is provided opposite the evaporation ring. Since the impregnated material also serves as a vaporization heater, ignition is performed smoothly. Furthermore, since the combustion coupling is divided into two parts, the evaporation surface of the evaporation IJ can be used effectively, and the transition from ignition to main combustion can be smoothly performed.

Therefore, there is no need to use complex sequences. Further, according to this method, there is no need to ignite a large combustion engine, and there is no need to change the capacity of the vaporization heater or ignition heater.
In addition, since the evaporation ring is heated, the evaporation ring burns in a short time, so the extinguishing time is short just by closing the on-off valve, and frequent on-off combustion is possible. It is something.

[Brief explanation of the drawing]

The drawings show one embodiment of the liquid fuel combustion device of the present invention, in which FIG. 1 is a cross-sectional view of the combustion device, FIG. 2 is a vertical side view,
FIG. 3 is a vertical side view of the thermally responsive valve section showing the closed state, and FIG. 4 is a vertical side view of the thermally responsive valve section showing the open state. 1... Combustion tube, 3... Evaporation ring, 5
...impregnated material, 8...branch pipe, 10...
...・Heat adjustment valve, 15... Heater for ignition. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. In a combustor that is equipped with an evaporation ring wrapped around an impregnated object installed approximately concentrically with the combustion tube inside the combustion tube, and an ignition heater installed opposite to the evaporation ring, the evaporation ring 1. A liquid fuel combustion device characterized in that fuel is dripped into two parts from above, and one of the combustion material supply pipes is configured to supply fuel by a heat-responsive valve.