JPS59150215A - Kerosene burner - Google Patents

Abstract

PURPOSE:To exactly iliminate the emission of odors at the time of fire extinguishing as well as shorten the time of oil sending until ignition by providing an expandible film to a part of the wall of an oil supply tube and a solenoid to expand or contract the expandible film. CONSTITUTION:At the time of fire extinguishing, the supply of electricity to a pump 1 and a solenoid 13 is interrupted. Since a plunger 14 is pulled by a spring 15 when electrification to the solenoid 13 is interrupted, the expandible film 11 of a spuit 12 becomes elongated. In this case, since fuel filled up to the outlet of the oil supply tube 2 is sucked by the expandible film 11 of the spuit 12, fuel is lost from the outlet of the tip of the oil supply tube 2, and therefore, the return of fuel in the oil supply tube to a vaporizing chamber 8 is avoided. The emission of odors at the time of fire extinguishing can thus be eliminated. At the time of ignition, fuel sucked by the spuit 12 is instantaneously returned into the oil supply tube by the action of the solenoid 13. The time when fuel reaches the burner can thus be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an oil combustor that supplies fuel into a vaporization chamber and vaporizes and burns the fuel. As shown in Figure 1, the type of burner used simply stopped the oil pump when combustion stopped. In this case, even after the oil supply has stopped, fuel remains in the oil supply pipe B, and after the combustion has stopped, the oil supply pipe B located inside the burner C is heated by the heat of the burner C, so the inside of the pipe is The fuel expands and drips into the burner even after the fire is extinguished, producing raw gas, which increases the odor after the fire is extinguished. As a means to solve this problem, as shown in Fig. 2, a three-way valve Di is installed in the middle of oil pipe B, and during combustion, pump A and oil pipe B
A method is known in which the oil in the oil pipe is returned to the tank 5 by natural head when the fire is extinguished by connecting the oil pipe B and the drain pipe F that looks into the fuel tank E when the fire is extinguished. It is being In this case, all the oil in the oil pipe beyond the three-way valve is returned to the fuel tank, which causes the problem that it takes a long time for the fuel to reach the burner the next time it is ignited. be. In addition, there was a drawback that a drain pipe F was required in addition to the three-way valve, making the configuration complicated.

OBJECT OF THE INVENTION The present invention solves such conventional problems, and
] The purpose is to reduce the extinguishing odor and shorten the oil supply time at ignition 1 with a simple configuration.

Structure of the Invention In order to achieve the above-mentioned object, the present invention provides a telescopic membrane and a solenoid that expands and contracts the membrane on a part of the oil pipe wall, and when extinguishing a fire, the telescopic film is expanded to drain the fuel at the tip of the oil pipe. This is to prevent fuel from dripping into the burner after the oil supply is stopped.

DESCRIPTION OF LENGTH EXAMPLE An example will be described below based on the drawings. In FIG. 3, 1 is an oil pump, and 2 is an oil pipe, one end of which is connected to the oil pump 1 located in the fuel tank S, and the other end is used to vaporize a burner 3 having a plurality of vaporizers 7. It is the first day of the month. 9 is a heater that preheats the vaporization chamber 8; 1o is a combustion blower that sends combustion air to the vaporization chamber 8; the amount of combustion air can be switched between high and low depending on the oil supply level of the oil pump 1; As shown in FIG. 4, a dropper 12 is connected to the middle of the oil pipe 2 and has a stretchable film 11 made of a thin, hard rubber with strong oil resistance. It is fixed at 14.

15 is a plunger tension spring of the solenoid 13. Further, as shown in FIG. 4, the oil pump 1 is an electromagnetic pump having a plunger 16 and a check valve 17f. 18
19 indicates the main fuel tank, and 19 indicates the flame formed in the flame hole 7 of the burner.

Next, its operation will be explained together with the circuit shown in FIG. First, when the operation switch 2o is turned on and the heater 9 is energized, the vaporization chamber 8 and the burner 3 are preheated. When this preheating is completed, the control circuit 21 detects this and operates the combustion blower 1o, and energizes the oil pump 1 and the solenoid 13. Since the plunger 14 of the solenoid 13 is provided with a tension spring 16, when the current is not energized, the elastic membrane 11 connected to the plunger 14 is pulled by the spring 15 and is stretched as shown in FIG. However, when the solenoid 13 is energized, the plunger 14 overcomes the tensile force of the spring 15 and is maintained in a state where the elastic membrane 11 of the dropper 12 is contracted!
Set it to the state shown in the figure.

As the oil pump 1 operates, the fuel in the fuel tank 5 is sent to the vaporization chamber 8 through the oil pipe 2, becomes vaporized gas, is mixed with combustion air, and is ejected from the flame hole 7 of the burner 3. The control circuit 21 switches the capacities of the pump 1 and the combustion blower 10 between "strong" and "weak" at the same time, and switches the combustion amount to "strong" and "weak".

Next, when extinguishing the fire, turn off the operation switch 2o and pump 1.
, the power supply to the solenoid 13 is cut off. When the power supply to the solenoid 13G is cut off, the plunger 14 is pulled by the spring 15, so that the elastic membrane 11 of the dropper 12 is in an extended state as shown in FIG. At this time, the fuel that was filled up to one outlet at the tip of the oil pipe 2 is sucked by the elastic membrane 11 of the dropper 12, so there is no more fuel at the outlet at the tip of the oil pipe 2, and after the fire is extinguished, the fuel inside the pipe is The fuel does not drip into the vaporizing chamber 8, and there is no extinguishing odor. After the fuel is stopped, the combustion blower 10 is stopped with a slight delay due to the action of the burner thermometer 22, and a fire extinguishing operation is performed.

It should be noted that when extinguishing a fire, if the power to the solenoid 13 is cut off and the stretchable membrane 11 at the spot 12 is stretched, the fuel in the fuel tank 5 may be sucked into the dropper part from the pump 1 side, but the pump 1 is a plunger. 16, check valve 17, etc., the flow path resistance is much greater on the pump side than on the discharge port side of the oil pipe, and most of the fuel is sucked from the oil pipe discharge port side.

If the flow path resistance on the pump side is small, pump 1
, an electromagnetic valve may be interposed between the syringe 12 and the syringe 12, and the elastic membrane of the syringe 12 may be expanded at the same time as the electromagnetic valve is closed.

The next time the fuel is ignited, the fuel sucked into the dropper 12 is instantly pushed back into the oil pipe by the operation of the solenoid 13, so it takes less time for the fuel to reach the burner.

DETAILED DESCRIPTION OF THE INVENTION As described above, according to the present invention, when a fire is extinguished, the fuel on the discharge port side of the oil pipe is sucked by the suction means, so there is no after-flushing of the φ fuel after the fire is extinguished, and there is no fire extinguishing odor. In addition, when extinguishing a fire, a large amount of fuel in the oil supply pipe is not returned to the tank, and the fuel sucked into the elastic membrane is sent out together with the fuel supply, reducing the time it takes for fuel to reach the burner when igniting. Effects such as being able to do this can be achieved with a simple configuration. Also,
Since there is no fuel at the tip of the oil pipe during preheating, the oil pipe is not heated during preheating and the fuel in the oil pipe is not pushed out into the vaporization chamber, which is also effective in reducing odor during ignition.

[Brief explanation of the drawing]

Figures 1 and 2 are cross-sectional views of conventional oil combustors;
The figure is a sectional view of an oil combustor according to an embodiment of the present invention, and FIG. 4 is an enlarged sectional view showing the main parts thereof. Figure 6 is a cross-sectional view during suction action.
“It is a schematic circuit diagram of unit C. 1...Fuel supply means (oil pump), 2...
...Oil pipe, 3...Burner, 8...
Vaporization chamber, 11...Stretch membrane, 13...Renoid. Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 0 66-

Claims (2)

[Claims] (1) A burner, an oil feed pipe facing into the vaporization chamber of the burner, and a fuel supply means for supplying fuel to the vaporization chamber of the burner via the oil feed pipe, the oil feed pipe having an oil feed pipe wall. A telescopic membrane constituting a part of the pipe and a solenoid for expanding and contracting the telescopic film are provided, and the solenoid is configured to extend the telescopic film and suck the fuel in the oil pipe when the fuel supply means is stopped. Oil burner. (2) The oil combustor according to claim 1, wherein the solenoid is connected in parallel with the fuel supply means and is configured to perform a suction action when the energization is stopped.