JP6822654B2 - Fire extinguishing control device for pot-type oil combustor - Google Patents

Description

The present invention relates to a fire extinguishing device for enhancing the safety of a pot-type oil combustor in the event of a fall.

In the pot-type oil combustor, the fuel supplied into the pot by the fuel pump is vaporized at the bottom of the pot where the temperature is high due to the heat of combustion, and part of the vaporized gas is burned by the air supplied from the air holes on the side wall of the pot. However, the generated combustion gas and the remaining vaporized gas are completely burned in the combustion chamber at the top of the pot. In addition, when the fuel pump is stopped by the fire extinguishing operation, the fuel remaining in the pot burns immediately and the fire is extinguished immediately, but when the fuel remaining in the fuel pipe drops into the pot after the fire is extinguished, this fuel ignites. Combustion may start and continue for a while, causing odors and large variations in the time from fire extinguishing operation to complete fire extinguishing.

Therefore, we proposed a structure that operates the fuel suction system in conjunction with the fire extinguishing operation to suck fuel from the fuel pipe connected to the pot so that the fuel does not drip into the pot after the fire is extinguished. I try to prevent reignition.

That is, an air pipe to which the blower pressure of the blower is applied is connected to the fuel pipe, a high place is provided in the middle of the fuel pipe from the connection portion between the fuel pipe and the air pipe to the pot, and the fuel crosses the high place during combustion. Is supplied, and the oil level of the air pipe is balanced with the blow pressure of the blower to form an oil level lower than the height of the fuel pipe.

When the fuel pump and blower are stopped by fire extinguishing operation, the air pressure drops and the oil level of the air pipe rises, and the fuel in the fuel pipe is sucked into the air pipe over high places by the siphon effect. After extinguishing the fire, fuel does not drip into the pot and stable fire extinguishing performance can be obtained. Also, in the event of a fall, the height of the fuel pipe turns sideways and is no longer a high place, and the fuel pushed out by the blower pressure of the blower drops to a place away from the vaporized part on the bottom of the pot, so the combustion balance is broken. It is not possible to continue burning, and the fire can be extinguished in a short time even when it falls. (See Patent Document 1).

In addition, as a fuel suction system linked to this fire extinguishing operation, there is also a fuel pump itself having a fuel suction function by attaching a push-up pin between the discharge valve of the fuel pump and the plunger. After stopping the fuel pump by fire extinguishing operation, when the fuel suction function is activated and the push-up pin opens the discharge valve, the fuel in the fuel pipe flows to the fuel pump side due to the height difference between the fuel pump and the oil supply nozzle. The fuel in the pipe can be sucked into the fuel pump. (See Patent Document 2).

JP-A-2002-213471 Japanese Unexamined Patent Publication No. 6-294377

In the configuration of Patent Document 1, since it is necessary to provide a high place on the fuel pipe to connect the air pipe, the number of parts is large and the shape is complicated, and the mounting position of the fuel pump is limited. There were many restrictions, which hindered cost reduction. If a fuel pump having a fuel suction function as in Patent Document 2 is used, an air pipe connected to the fuel pipe becomes unnecessary, and the number of parts and processing cost can be expected to be reduced.

However, when the oil burner falls, the fuel pump may be higher than the oil feed nozzle depending on the direction of the fall, and the fuel in the fuel pipe does not flow to the fuel pump side and remains in the fuel pipe. It may end up. A vaporization type burner that separates the fuel vaporization part and the combustion part that burns the vaporized combustion gas has the problem that there is no risk of ignition even if fuel remains in the fuel pipe at the time of a fall, and the fire extinguishing time becomes long. It didn't happen.

On the other hand, the pot-type oil combustor has a structure in which the nozzle is located in the pot that integrates the fuel vaporization part and the combustion part and supplies the fuel directly to the pot, so the fuel remains in the fuel pipe. If this is the case, the remaining fuel may be ignited and a small flame may be attached to the tip of the nozzle, resulting in a phenomenon in which the flame is not extinguished forever. Therefore, in order to equip the pot-type oil combustor with a fuel pump having a fuel suction function, it is necessary to take new measures in case of a fall. The present invention proposes a fire extinguishing device capable of achieving stable fire extinguishing regardless of the direction of tipping with a simple structure.

The present invention solves the above-mentioned problems. A bottomed tubular pot 3 having a large number of air holes 3a provided on a side wall is mounted in a wind cylinder 2 to which combustion air is sent by a blower 1, and the pot 3 is provided with a bottomed tubular pot 3. A fuel pipe 4 is arranged in the fuel pump 5 for supplying fuel, and an oil feeding nozzle 4a formed by the tip of the fuel pipe 4 is positioned in the pot 3 and supplied from the oil feeding nozzle 4a by the fuel pump 5. The fuel is vaporized in the pot 3 and burned in the combustion chamber 6 following the pot 3, and the fire extinguishing operation means 7 and the automatic fire extinguishing means 9 operated by the signal of the seismic detector 8 are provided. In an oil burner provided with a fire extinguishing system for vibration and a fire extinguishing system for falling, the automatic fire extinguishing means 9 is a determining means for determining whether the fuel is vibrating or falling based on the opening / closing signal of the seismic detector 8. The fuel pump 5 is provided with a fuel suction means 12 for sucking the fuel in the fuel pipe 4, and the automatic fire extinguishing means 9 is provided with an open / close signal of the seismic detector 8 when the signal is detected. When the energization of the fuel pump 5 is stopped and closed, the rotation speed of the blower 1 is changed to a predetermined rotation speed, and the determination means 10 determines that the fuel is vibrating and starts the fire extinguishing system at the time of vibration. the fuel suction means 12 is operated to control so as to suck the fuel in the fuel pipe 4 to the fuel pump 5 side, when said judging means 10 starts a fire extinguishing system of a fall is determined that a fall is The brake means 11 for decelerating the blower 1 is operated for a predetermined time without operating the fuel suction means 12, and the energization of the blower 1 is stopped after the predetermined time has elapsed.

Further, by setting the predetermined rotation speed of the blower 1 when the opening / closing signal of the seismic detector 8 is detected to a maximum rotation speed higher than the rotation speed at the time of maximum combustion, a large amount of the blower 1 is contained in the pot 3. The air can be supplied to promote combustion, and the flame remaining in the pot 3 can be extinguished in a short time.

Further, the automatic fire extinguishing unit 9, when starting the fire extinguishing system of normal operating at a signal of the extinguishing operation means 7, the fuel pipe to the fuel pump 5 is operated with the fuel suction unit 12 after stopping the fuel in the 4 be controlled to be sucked into the fuel pump 5 side, in the normal fire fighting and vibration extinguishing so as not to leave the fuel in the fuel pipe 4 to prevent odors from the fuel pump 5 during tipping extinguishing It is possible to prevent the outflow of the fuel and to extinguish the fire reliably in a short time even if the fuel remains in the fuel pipe 4.

Further, the fuel pump 5 includes a plunger 51 that moves up and down in the fuel pump 5, a discharge valve 56 that is opened and closed by the plunger 51, and a push-up pin 58 formed from the plunger 51 toward the discharge valve 56. When the fuel suction means 12 activates the fire extinguishing system during normal operation and the fire extinguishing system during vibration, the fuel pump 5 is stopped, and then the plunger 51 is driven by a drive current having a predetermined frequency, and the push-up pin is used. When the 58 opens the discharge valve 56 to suck the fuel from the fuel pipe 4 and activates the fire extinguishing system at the time of the fall, the drive current is not supplied to the plunger 51 after the fuel pump 5 is stopped. By holding the discharge valve 56 in a closed state, the fuel pump 5 itself can be provided with the function of the fuel suction means 12, and the distance between the fuel pump 5 and the pot 3 is shortened to shorten the dimension of the fuel pipe 4. it can.

In the present invention, when the oil combustor falls and the open / close signal of the seismic detector 8 is detected, the energization of the fuel pump 5 is stopped and the supply of fuel into the pot 3 is stopped. If the fuel remaining inside burns, the fire will be extinguished. After that, when the determination means 10 determines that the pot has fallen and activates the fire extinguishing system at the time of the fall, the brake means 11 rapidly lowers the rotation speed of the blower 1 and stops, so that the supply of air into the pot 3 is stopped. The inside of the pot 3 becomes insufficient in air.

Since the air required for fuel combustion is not supplied to the pot 3 after the fire is extinguished, there is no risk of reignition even if fuel remains in the oil supply nozzle 4a or the fuel pipe 4, and the tip of the oil supply nozzle 4a The problem of small flames sticking to the pipe no longer occurs. Furthermore, since it is not necessary to push out or suck the fuel in the fuel pipe 4, the fire can be extinguished reliably regardless of the direction of the fall of the oil combustor, and stable fire extinguishing performance can be realized even when the fall fire is extinguished. is there.

Further, when the open / close signal of the seismic detector 8 is detected, the rotation speed of the blower 1 is set to a maximum rotation speed higher than the maximum rotation speed at the time of combustion, so that a large amount of air is supplied into the pot 3. Combustion is promoted, the fuel in the pot 3 is consumed in a short time, and the flame remaining in the pot 3 can be forcibly blown out. Therefore, when the determination means 10 determines that the fire has fallen and the automatic fire extinguishing means 9 activates the fire extinguishing system at the time of the fall, no flame remains in the pot 3, so that the braking means 11 forcibly forces the rotation speed of the blower 1. Even when the temperature is lowered to a high level and the inside of the pot 3 becomes insufficient in air, the fire can be extinguished without causing a standing flame or smoking.

Further, a fuel suction means 12 for sucking the fuel in the fuel pipe 4 into the fuel pump 5 is provided, and the fuel suction means 12 is operated during normal fire extinguishing and vibration fire extinguishing to bring the fuel in the fuel pipe 4 into the fuel pump 5. By sucking, odor prevention and stable fire extinguishing time can be obtained. On the other hand, at the time of overturning fire extinguishing, the number of rotations of the blower 1 is forcibly reduced by the braking means 11 to make the pot 3 in a state of insufficient air, so that reignition may occur even if fuel remains in the fuel pipe 4. Is gone. Therefore, by not operating the fuel suction means 12 and keeping the fuel pump 5 closed, fuel does not flow out from the fuel pump 5, and the fire is surely extinguished regardless of the direction in which the oil combustor falls. Can now be done.

Further, the fuel pump 5 itself is provided with the fuel suction means 12, a push-up pin 58 is provided between the plunger 51 and the discharge valve 56 of the fuel pump 5, and the fuel pump 5 is stopped during normal fire extinguishing and vibration fire extinguishing. When the push-up pin 58 later opens the discharge valve 56, the fuel in the fuel pipe 4 flows to the fuel pump 5 side, and the fuel does not remain in the fuel pipe 4, so that odor prevention and stable fire extinguishing can be realized. On the other hand, at the time of overturning fire extinguishing, even if fuel remains in the fuel pipe 4, the fire can be surely extinguished. Therefore, by holding the discharge valve 56 of the fuel pump 5 closed, the fuel can flow out regardless of the direction of overturning. Therefore, the degree of freedom in the shape of the fuel pipe 4 and the mounting position of the fuel pump 5 is increased, and the mounting position of the fuel pump 5 is made as close as possible to the pot 3 so that the size of the fuel pipe 4 is short and has a simple shape. The number of parts is small, material costs and processing costs can be reduced, and manufacturing costs can be reduced.

It is a block diagram which shows the structure of the oil combustor which shows the Example of this invention. It is a vertical sectional view of the petroleum combustor which shows the Example of this invention. It is sectional drawing of the main part of the fuel pump which shows the Example of this invention.

Explaining the present invention by the embodiment shown in the figure, 2 is a wind cylinder to which combustion air is supplied, 3 is a bottomed tubular pot arranged in the wind cylinder 2, and 1 is to supply combustion air to the pot 2. The blower 3a is a large number of air holes provided on the side wall of the pot 3 so that the combustion air sent to the wind cylinder 2 can be supplied.

Reference numeral 13 is a fuel tank for storing fuel to be supplied to the pot 3, 4 is a fuel pipe for supplying fuel from the fuel tank 13 to the pot 3, and 4a is an oil feeding nozzle composed of the tip of the fuel pipe 4 located in the pot 3. Is a fuel pump composed of an electromagnetic pump attached in the middle of the fuel pipe 4, 14 is a heater arranged at a distance from the side wall of the pot 3 to the bottom surface of the pot 3, and 6 is continuously arranged on the upper part of the pot 3. It is a combustion chamber.

Reference numeral 15 denotes an ignition operating means for igniting an oil combustor composed of an operation switch, 1a is a blower controlling means for changing the rotation speed of the blower 1, and 5a is a pump for changing the fuel flow rate of the fuel pump 5. It is a control means, and when the ignition operation means 15 is operated to start the operation of the oil combustor, the pot 3 is heated by the heating heater 14, and when the bottom surface of the pot 3 reaches a temperature suitable for combustion, the pump control means 5a and the blower control Means 1a drives the fuel pump 5 and the blower 1 to supply fuel and combustion air to the pot 3, the fuel vaporizes at the bottom surface of the hot pot 3, and is ignited by the heat of the heater 14 to start combustion. ..

When combustion is started, the bottom surface of the pot 3 is heated by the heat of combustion and becomes hot, and the fuel dripping from the oil feeding nozzle 4a vaporizes at the bottom surface of the pot 3, so that the energization of the heating heater 14 is stopped. Even so, combustion can be continued. The fuel vaporized at the bottom surface of the pot 3 is mixed with the combustion air supplied from the air hole 3a on the side wall of the pot 3, and a part of the vaporized gas is burned, and the generated combustion gas and the remaining vaporized gas are the pot 3 Completely burns in the combustion chamber 6 above.

7 is a fire extinguishing operation means for extinguishing an oil combustor composed of operation switches, 8 is a seismic detector attached to a stand of the oil combustor, and 9 is an operation signal of the fire extinguishing operation means 7 or a seismic detector. It is an automatic fire extinguishing means that operates by the output signal of No. 8 to extinguish the burning pot 3. The automatic fire extinguishing means 9 includes a normal fire extinguishing fire extinguishing system operated by the signal of the fire extinguishing operation means 7 and an emergency fire extinguishing fire extinguishing system operated by the signal of the seismic detector 8.

When the fire extinguishing operation means 7 is operated and a fire extinguishing signal is sent to the automatic fire extinguishing means 9, the automatic fire extinguishing means 9 operates a fire extinguishing system for normal fire extinguishing, and the pump control means 5a receives the signal of the automatic fire extinguishing means 9 to pump the fuel. While stopping the operation of 5, the blower control means 1a changes the blower 1 to a preset number of revolutions. Since the fuel supply to the pot 3 is cut off, the fuel remaining in the pot 3 is burned out and the fire is extinguished spontaneously. Reference numeral 16 denotes a flame detecting means for detecting the flame in the pot 3. The blower 1 continues to be driven while the flame detecting means 16 outputs the flame detecting signal, and when the flame detecting signal disappears, the blower controlling means 1a is a blower. 1 is lowered to a preset rotation speed and driven for a set time to cool the inside of the pot 3 and then stop.

Reference numeral 12 denotes a fuel suction means for sucking the fuel in the fuel pipe 4 into the fuel pump 5 during the fire extinguishing operation of the oil combustor. After the fuel supply is stopped due to the stop of the fuel pump 5 during the fire extinguishing operation, the fuel suction means 12 By operating the fuel pump 5 to suck the fuel remaining in the fuel pipe 4, the fuel does not drip into the pot 3 from the oil feeding nozzle 4a, and the odor is prevented and the fire extinguishing time is stabilized.

In the present invention, the fuel pump 5 itself provided with the fuel suction means 12 is selected, FIG. 3 is a sectional view of the fuel pump 5, and 50 forms a fuel flow path in the fuel pump 5. The pipe and 51 are plungers slidably provided in the pipe 50, 51a and 51b are upper and lower springs for holding the plunger 51 in the initial position, and 52 is a solenoid arranged around the pipe 50. The solenoid 52 has a solenoid 52 in advance. When a drive current of a predetermined frequency is supplied, the plunger 51 moves so as to compress the upper spring 51a, stops at the drive position, and returns to the initial position by the force of the upper / lower springs 51a / 51b, so that the plunger 51 It reciprocates in synchronization with the drive frequency.

53 is a fuel flow path formed so as to penetrate the center of the plunger 51, 54 is a suction valve provided in the flow path 53 in the plunger 51, 54a is a suction valve spring for urging the suction valve 54 in the closing direction, and 54b is a suction valve spring. It is a valve seat of the suction valve 54, and the suction valve 54, the suction valve spring 54a, and the valve seat 54b are integrally reciprocating with the plunger 51.

55 is a discharge port provided at the connection portion with the fuel pipe 4, 56 is a discharge valve arranged between the discharge port 55 and the plunger 51, 56a is a discharge valve spring that urges the discharge valve 56 in the closing direction, and 56b is a discharge valve spring. It is a valve seat of the discharge valve 56.

Reference numeral 57 denotes a suction port extending below the pipe 50, and the suction port 57 reaches the fuel in the fuel tank 13 and is provided at a position lower than the oil supply nozzle 4a at the tip of the fuel pipe 4.

Reference numeral 58 denotes a push-up pin formed from the upper portion of the plunger 51 toward the discharge valve 56 side. When the plunger 51 is in the initial position, the push-up pin 58 is separated from the discharge valve 56.

When a drive current of a predetermined frequency is supplied to the solenoid 52 and the plunger 51 moves to the drive position while compressing the upper spring 51a, the discharge port 55 is opened by the pressure in the pipe 50 to open the fuel in the fuel pump 5. Is sent to the fuel pipe 4. The push-up pin 58 does not come into contact with the discharge valve 56 even when the plunger 51 moves to the drive position. When the plunger 51 returns to the initial position, the pressure inside the pipe 50 becomes negative, the suction valve 54 opens while compressing the suction valve spring 54a, and the fuel in the fuel tank 13 is sucked into the pipe 50 from the suction port 57. ..

Further, when the fire extinguishing operation means 7 is operated and a fire extinguishing signal is sent to the automatic fire extinguishing means 9, the supply of the drive current to the solenoid 52 is stopped, the plunger 51 returns to the initial position, and the fuel pump 5 sends the fuel pipe. The supply of fuel to 4 is stopped. After that, a drive current having a frequency different from that during operation is supplied to slowly move the plunger 51, and the push-up pin 58 comes into contact with the discharge valve 56 to gradually push up the discharge valve 56, thereby causing the fuel pump 5 to the fuel pipe 4 side. The discharge valve 56 opens without fuel being sent to. When the discharge valve 56 is opened, the fuel in the fuel pipe 4 flows to the fuel pump 5 side due to the drop pressure, and the fuel in the fuel pipe 4 can be sucked. When the supply of the drive current is stopped, the plunger 51 is rapidly moved to the initial position by the upper / lower springs 51a / 51b, so that the pressure inside the pipe 50 becomes negative, and the fuel in the fuel pipe 4 is also in the fuel pump 5 at this time. It is sucked into.

Reference numeral 10 denotes a determination means for determining whether the output signal of the seismic detector 8 is due to vibration such as an earthquake or a fall of the oil combustor, and the seismic detector 8 is pressed by the weight and the weight. It is composed of a switch, and the ON-OFF of the contact of the switch is switched by the movement of the weight. Since the weight keeps shaking during vibration such as an earthquake, the switch repeats ON-OFF, and when it falls, the weight separates from the switch, so it remains ON or OFF after repeating ON-OFF for a while. The determination means 10 detects the number of ON-OFF times of the seismic detector 8 to determine vibration and fall. Two types of fire extinguishing signals are output from the determination means 10 to the automatic fire extinguishing means 9, and the automatic fire extinguishing means 9 operates by selecting a fire extinguishing system at the time of vibration and a fire extinguishing system at the time of falling.

When the ON-OFF signal of the seismic detector 8 is output, the automatic fire extinguishing means 9 operates the fire extinguishing system in an emergency, the pump control means 5a stops the operation of the fuel pump 5, and the blower control means 1a is a blower. The rotation speed of 1 is changed to the maximum rotation speed higher than the maximum combustion speed. The determination means 10 detects the number of ON-OFF times from the start of operation of the seismic detector 8 to the elapse of a predetermined time (for example, 2 seconds later), and when the number of ON-OFF times is greater than the predetermined number of times, the oil combustor It is judged that the vibration is like an earthquake in which the shaking continues for a long time, and if it is less than the predetermined number of times, it is judged as a fall.

When the determination means 10 outputs a signal during vibration, the automatic fire extinguishing means 9 operates the fire extinguishing system during vibration, and the blower control means 1a uses the blower 1 when there is no flame detection signal from the flame detecting means 16. It stops, and when there is a flame detection signal from the flame detecting means 16, the blower 1 is held at the maximum rotation speed, and when a predetermined time elapses or the flame detecting signal from the flame detecting means 16 disappears, the blower 1 is stopped. ..

Further, the pump control means 5a operates the fuel suction means 12 of the fuel pump 5, supplies the solenoid 52 with a drive current having a frequency different from that during operation, slowly moves the plunger 51, and the push-up pin 58 presses the discharge valve 56. Since it is gradually pushed up and opened, the fuel in the fuel pipe 4 flows to the fuel pump 5 side. When a predetermined time elapses, the supply of the drive current to the solenoid 52 is stopped and the discharge valve 56 is closed.

When the oil combustor receives vibration, the amount of air supplied to the pot 3 is increased to promote combustion, and the fuel in the pot 3 is burned in the shortest possible time to shorten the fire extinguishing time. Further, by operating the fuel suction means 12 to suck the fuel in the fuel pipe 4, the fuel does not drip into the pot 3 or reignite after the fire is extinguished, and the fire can be extinguished reliably. ..

Reference numeral 11 denotes a braking means that supplies a half-wave direct current to the blower 1 for a minute time. When the determination means 10 outputs a signal at the time of a fall, the automatic fire extinguishing means 9 activates the fire extinguishing system at the time of a fall to control the blower. After the means 1a operates the braking means 11 to perform a braking operation for supplying a half-wave direct current to the blower 1 for a short time, the energization of the blower 1 is stopped.

Further, the pump control means 5a does not operate the fuel suction means 12 of the fuel pump 5 and holds the discharge valve 56 in a closed state, and the fuel in the fuel pipe 4 is not sucked. Fuel remains in the pipe 4.

Since the blower 1 rotates by inertia even when the energization is stopped, air is sent into the pot 3 until the rotation of the blower 1 is completely stopped, and fuel remains in the fuel pipe 4 and the oil blowing nozzle 4a. If there is, there is a risk of reignition due to this air.

In the present invention, the number of rotations of the blower 1 is rapidly reduced by the braking means 11 to stop the supply of combustion air into the pot 3 in a very short time. For this reason, the air required for combustion is not supplied to the pot 3, and the pot 3 is in a state of insufficient air. Therefore, even if fuel remains in the fuel pipe 4 or the oil supply nozzle 4a, there is a risk of ignition. The fire can be extinguished without fail, and it is no longer necessary to suck the fuel in the fuel pipe 4.

Further, when the oil burner falls, the position of the fuel pump 5 may be higher than that of the oil feeding nozzle 4a depending on the direction of the fall. In this case, even if the discharge valve 56 of the fuel pump 5 is opened, the fuel is fueled. There is a risk that the fuel in the pipe 4 will not flow to the fuel pump 5 side and the fuel will flow out from the fuel pump 5 to the fuel pipe 4 side. However, when the fire is extinguished, the fuel suction means 12 of the fuel pipe 4 does not operate and the fuel Since the discharge valve 56 of the pump 5 is held in the closed state, fuel does not flow out from the fuel pump 5 to the fuel pipe 4 side, and reliable fire extinguishing is possible regardless of the direction in which the oil burner falls. It is a fuel.

Further, when the ON-OFF signal of the seismic detector 8 is output, the amount of air supplied into the pot 3 is increased by setting the blower 1 to the maximum rotation speed higher than the maximum combustion speed. Combustion can be promoted, the fuel remaining in the pot 3 can be consumed in a short time, and the flame remaining in the pot 3 can be forcibly extinguished. Therefore, in the pot 3 between the time when the ON-OFF signal of the seismic detector 8 is output and the automatic fire extinguishing means 9 operates the emergency fire extinguishing system and the time when the judging means 10 judges vibration and falling. When the blower control means 5a operates the braking means 11 to stop the blower 1 and stop the supply of air into the pot 3 to create a state of air shortage when the fire is extinguished due to the lack of fuel. The fire can be extinguished without causing a standing flame or smoking.

Further, by closing the discharge valve 56 of the fuel pipe 4 at the time of overturning fire, there is no risk of fuel flowing out from the fuel pump 5 to the fuel pipe 4 side at the time of overturning. Therefore, the mounting position of the fuel pump 5 and the fuel pipe 4 There are no restrictions on the shape. Therefore, by installing the fuel pump 5 as close to the pot 3 as possible and shortening the distance from the fuel pump 5 to the pot 3, the fuel pipe 4 can have a short size and a simple shape, and the material cost can be reduced. It is effective in reducing costs because it can reduce processing costs.

1 Blower 2 Wind cylinder 3 Pot 3a Air hole 4 Fuel pipe 4a Oil supply nozzle 5 Fuel pump 6 Combustion chamber 7 Fire extinguishing operation means 8 Seismic detector 9 Automatic fire extinguishing means 10 Judgment means 11 Brake means 12 Fuel suction means 51 Plunger 56 Discharge Valve 58 push-up pin

Claims (4)

A bottomed tubular pot with a large number of air holes on the side wall is installed in the air cylinder to which the combustion air is sent by the blower.
A fuel pipe is placed in the fuel pump that supplies fuel to the pot.
An oil feeding nozzle formed by the tip of the fuel pipe is positioned in the pot, and the fuel supplied from the oil feeding nozzle by the fuel pump is vaporized in the pot and burned in the combustion chamber following the pot. With
Equipped with fire extinguishing means and automatic fire extinguishing means that operates with the signal of the seismic detector
The automatic fire extinguishing means is an oil combustor equipped with a fire extinguishing system for vibration and a fire extinguishing system for falling.
A determination means for determining whether to vibrate or fall based on the opening / closing signal of the seismic detector is provided.
The fuel pump is provided with a fuel suction means for sucking fuel in the fuel pipe.
When the open / close signal of the seismic detector is detected , the automatic fire extinguishing means stops the energization of the fuel pump and closes it, and changes the rotation speed of the blower to a predetermined rotation speed.
When the determination means determines that the vibration is vibrating and activates the fire extinguishing system at the time of vibration, the fuel suction means is operated to control the fuel in the fuel pipe to be sucked to the fuel pump side.
When said judging means starts the extinguishing system of a fall is determined that a fall, without activating the fuel suction means, the braking means for decelerating the blower was operated for a predetermined time, the blower after the lapse of a predetermined time A fire extinguishing control device for a pot-type oil combustor, which is characterized by stopping the energization of the oil. The pot according to claim 1, wherein a predetermined rotation speed of the blower when an open / close signal of the seismic detector is detected is set to a maximum rotation speed higher than the rotation speed at the time of maximum combustion. Fire extinguishing control device for a type oil combustor. The automatic fire extinguishing unit, the time to start the fire extinguishing system of normal operating at signals extinguishing operation means, fuel the fuel of the fuel pump inside by operating the fuel suction means after the stop the fuel pipe The fire extinguishing control device for a pot-type oil burner according to claim 1 or 2, wherein the fuel is controlled to be sucked to the pump side. The fuel pump includes a plunger that moves up and down in the fuel pump, a discharge valve that is opened and closed by the plunger, and a push-up pin formed from the plunger toward the discharge valve.
When the fuel suction means activates the fire extinguishing system during normal operation and the fire extinguishing system during vibration, the plunger is driven by a driving current having a predetermined frequency after the fuel pump is stopped, and the push-up pin is the discharge valve. To suck the fuel from the fuel pipe,
The pot according to claim 3, wherein when the fire extinguishing system at the time of a fall is started, the driving current is not supplied to the plunger after the fuel pump is stopped, and the discharge valve is held in a closed state. Fire extinguishing control device for a type oil combustor.

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