JPH11211017A - Combustion apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable safe and better combustion for a long time by restricting or removing tar stuck on a nozzle hole and a needle valve as caused during the combustion using a defective fuel concerning air conditioning equipment which is designed to burn a liquid fuel by vaporizing it. SOLUTION: A control section is actuated instantaneously at the combustion and activates an electromagnetic solenoid 15 that causes a needle valve 16 to perform an operation of closing and opening a nozzle hole 13A instantaneously so that tar stuck on the nozzle hole 13A and the needle valve 16 is removed. Components from which the tar stuck on the nozzle hole 13 and the needle valve is removed are jetted out together with a vaporized gas from the nozzle hole 13A to be burned at a combustion part of a burner part 17 without adhering to other parts. The tar stuck on the nozzle hole 13A and the needle valve 16 can be accurately removed before accumulated substantially and this prevents changes in the level of combustion and the blocking of the flow of the vaporized gas as caused by the tar stuck on the nozzle hole 13A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus for vaporizing a liquid fuel and ejecting the vaporized gas from a nozzle for combustion.

[0002]

2. Description of the Related Art Conventionally, this type of hot air heater is shown in FIGS.
As shown in (2), the fuel in the tank 33 is supplied by a pump 34 to a vaporizing section 35 maintained at a predetermined temperature or higher during combustion. The supplied fuel is supplied to the vaporizing chamber 3 in the vaporizing section 35.
The gas is vaporized by a vaporizing element 37 provided in 6, becomes a vaporized gas, has a high pressure in a vaporizing chamber 36, is ejected from a nozzle hole 37, is supplied to a burner 39, and is burned there.
Further, in the vicinity of the burner section 39, a flame rod type combustion sensor is used which applies a voltage to the flame electrode 40 and the burner section 39 put in the combustion flame, measures the amount of flowing current and detects the combustion state. is there. The generated combustion gas is guided upward by a combustion cylinder 41 disposed so as to cover the periphery of the burner section 39, mixed with a room air flow from a blower 43 by a duct 42 covering the combustion cylinder 41, and heated. It is discharged as wind and used for heating.

A nozzle hole 38 for ejecting fuel vaporized gas from a vaporization chamber 36 is opened and closed by a needle valve 45 provided in a movable portion of an electromagnetic solenoid 44. When combustion is stopped, the electromagnetic solenoid 45 is energized for a predetermined time. The combustion is stopped so that the fuel gas is not ejected from the nozzle hole 38.

Further, the control unit 46 applies an output corresponding to the combustion state to the frame electrode 40 and the burner unit 39, obtains an output of a combustion sensor obtained by measuring the amount of current flowing, and obtains an output of the combustion sensor. Control the burner section 3
If the combustion of No. 9 causes an abnormality for some reason, for example, when the amount of combustion air becomes extremely small, the current value of the combustion sensor decreases, and an attempt is made to stop the combustion as abnormal. Then, in order to prevent premature disconnection in the normal state, the control unit 46 determines that the current value is lower than the predetermined value and holds the current value for a predetermined period of time, which is abnormal, and the control unit 46 operates the pump 34 and the blower 43 in advance. The combustion is stopped by controlling in a predetermined sequence.

[0005]

However, the hot-air heater having such a configuration has a higher boiling point than a defective kerosene or kerosene mixed with a different component such as a deteriorated oil which has been stored and oxidized for a long time or a different oil. When the contained fuel is vaporized, tar is generated in the vaporizing element 37. When the tar reaches the vicinity of the nozzle hole 38 or the sliding portion of the needle valve 45 that opens and closes the nozzle hole 38, the needle valve 45 is fixed. There is a problem in that the nozzle hole 38 cannot be opened and closed even when the electromagnetic solenoid 44 is energized.

Further, when the tar adheres to the nozzle hole 38 or the needle valve 45, the tar is soft at high temperatures, but sticks when cooled. The tar adhering to the nozzle hole 38 cannot be removed by the needle valve 45 and fluctuates the amount of combustion, or the removed tar adheres to the outside of the nozzle hole 38,
There is a possibility that the flow of the vaporized gas ejected from the nozzle hole 38 is obstructed.

Further, the tar adhering to the needle valve 45 flows downward due to its gravitational force, and the adhering portion concentrates on the lower sliding portion having a low temperature, so that the needle valve 45 is stuck and does not move. For example, if the nozzle hole 38 is left open, the fuel accumulated in the vaporizing element 37 or the vaporizing chamber 34 is discharged from the nozzle hole 38 at the time of fire extinguishing even if ignition occurs, and unburned vaporized gas, generation of odor or There were problems such as a longer fire extinguishing time.

If the nozzle hole 38 remains closed, combustion cannot be started and the flame electrode 40 and the burner 3
Even if a voltage is applied to 9, the amount of current to be detected is small, so that it is determined that the combustion is abnormal and the combustion is stopped.

When the nozzle hole 38 is stopped halfway, the flow of the vaporized gas ejected from the nozzle hole 38 is disturbed or the amount of the vaporized gas is reduced, so that a voltage is applied to the frame electrode 40 and the burner 39. However, the amount of current to be detected decreases, and a combustion abnormality is detected, and the combustion is stopped.

[0010]

To solve the above-mentioned problems, a combustion apparatus according to the present invention comprises a tank for storing fuel, a pump for sucking and discharging fuel from the tank, and a vaporizer for vaporizing fuel supplied by the pump. Unit, a heater for heating the vaporizing unit, a temperature detecting means for detecting the temperature of the vaporizing unit, a nozzle hole for ejecting the fuel vaporized gas of the vaporizing unit, and a nozzle valve provided in the movable unit for opening and closing the nozzle hole. By controlling operating conditions such as an electromagnetic solenoid, a burner section for burning fuel vaporized gas from the vaporizing section, a combustion cylinder covering the burner section and guiding combustion exhaust gas generated in the burner section upward, and a pump and an electromagnetic solenoid. A control unit for controlling the combustion of the burner unit, and this control unit operates the electromagnetic solenoid instantaneously, periodically or irregularly, during combustion, and instantaneously closes the nozzle hole with the needle valve. It is configured to perform an operation to open Chi.

The electromagnetic solenoid is operated so as to perform an operation of instantly closing or opening the nozzle hole with the needle valve instantaneously during the combustion, periodically or irregularly, thereby removing tar adhering to the nozzle hole and the needle valve. So that the vaporized gas ejected from the nozzle stops instantaneously, but in the process of reaching the burner part, the mixture with the vaporized gas before and after is relaxed, and combustion is reduced for a moment, but continues while the nozzle hole and needle The amount from which the tar attached to the valve has been removed is ejected from the nozzle hole together with the vaporized gas,
The burner burns without adhering to other parts in the combustion part. Therefore, the tar adhering to the nozzle hole or the needle valve can be reliably removed without being accumulated so much, and it is possible to prevent the fluctuation of the combustion amount and the obstruction of the flow of the vaporized gas caused by the tar adhering to the nozzle hole, By preventing sticking of the needle valve caused by tar adhering to the needle valve, generation of unburned vaporized gas and odor at the time of fire extinguishing can be prevented, and the fire extinguishing time can be shortened.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 comprises a tank for storing fuel, a pump for sucking and discharging fuel from the tank,
A vaporization unit for vaporizing fuel supplied by the pump;
A heater for heating the vaporizing section, temperature detecting means for detecting the temperature of the vaporizing section, a nozzle hole for ejecting fuel vaporized gas from the vaporizing section, and an electromagnetic solenoid for opening and closing the nozzle hole with a needle valve provided in the movable section. A burner section for burning fuel vaporized gas from the vaporizing section, a combustion cylinder covering the burner section and guiding combustion exhaust gas generated in the burner section upward, and operating conditions such as a pump and an electromagnetic solenoid to control operating conditions of the burner section. A control unit for controlling combustion, wherein the control unit is configured to operate the electromagnetic solenoid instantaneously, periodically or irregularly, during combustion, to perform an operation of instantly closing the nozzle hole with the needle valve and then opening the nozzle hole. .

[0013] Then, at the time of combustion, an electromagnetic solenoid is operated so as to perform an operation of instantly closing the nozzle hole with a needle valve and then opening the nozzle hole periodically and irregularly, and to remove tar adhering to the nozzle hole and the needle valve. Because it is removed, the vaporized gas ejected from the nozzle stops instantaneously, but in the process of reaching the burner part, the mixture with the vaporized gas before and after is relaxed and combustion is reduced for a moment, but continues while the nozzle hole and The amount of the tar removed from the needle valve is ejected together with the vaporized gas from the nozzle hole, and is burned in the burning portion of the burner without adhering to other portions. Therefore, the tar adhering to the nozzle hole and the needle valve can be reliably removed without being accumulated so much, and the amount of combustion generated by the tar adhering to the nozzle hole can be prevented from fluctuating and obstructing the flow of the vaporized gas,
In addition, preventing sticking of the needle valve caused by tar adhering to the needle valve, fuel accumulated in the vaporization chamber at the time of fire extinguishing is discharged from the nozzle hole, and a large amount of white smoke and intense odor is generated and does not disappear. Risk can be prevented.

According to a second aspect of the present invention, the control unit has an extension control unit for stopping combustion after a predetermined time has elapsed, and the operation unit cancels the combustion stop after the predetermined time has elapsed, and from that time the predetermined time is maintained. An extension button for starting time counting is provided, and when this extension button is pressed during combustion or non-combustion, the electromagnetic solenoid is instantaneously activated, the nozzle valve is instantly closed with the needle valve, and then the opening operation is performed. .

When the extension button is depressed during combustion or non-combustion, the electromagnetic solenoid is actuated instantaneously, and the nozzle valve is momentarily closed and then opened with the needle valve. Sometimes, tar attached to nozzle holes and needle valves can be removed,
The tar adhering to the nozzle hole and the needle valve can be reliably removed without much accumulation. Furthermore, when the user consciously presses the extension button, the tar adhering to the nozzle hole and the needle valve can be removed, and the user's consciousness can be improved and more effective.

According to a third aspect of the present invention, the control unit has an extension control unit for stopping the combustion after a predetermined time has elapsed, and the operation unit cancels the combustion stop after the predetermined time has elapsed, and from that time, the predetermined time is maintained. Equipped with an extension button to start time counting, and a confirmation sound generating means such as a buzzer that confirms that the extension button was pressed when the extension button was pressed during combustion, and confirmed when the extension button was pressed during combustion At the same time when the sound generating means is operated, the electromagnetic solenoid is operated instantaneously, and the operation of closing the nozzle hole with the needle valve and then opening the nozzle hole is performed.

When the extension button is pressed during combustion, the confirmation sound generating means is activated, and at the same time, the electromagnetic solenoid is actuated instantaneously, and the nozzle valve is momentarily closed and then opened by the needle valve. In addition to this, the operation sound of the electromagnetic solenoid is cut off by the confirmation sound generation means when the extension button is pressed, and the user's consciousness is improved and the operation can be made more effective.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) Embodiment 1 of the present invention will be described with reference to FIGS. 1 is a control block diagram of the hot air heater, FIG. 2 is a cross-sectional view of the same hot air heater, FIG.
FIG. 4 shows a flowchart at the time of combustion.

1 and 2, reference numeral 1 denotes a main body case.
A tank 2 holding the liquid fuel is provided on a lower side thereof, and a detachable cartridge tank 3 is provided above the tank 2.

Reference numeral 4 denotes a pump mounted on the upper surface of the tank 2.
From the upper end, fuel is supplied to the vaporizing section 6 via the oil supply pipe 5.

FIG. 3 is a cross-sectional view of a main part of a hot air heater using the first embodiment of the present invention. In FIG. 3, the vaporizing section 6 is provided with a vaporizing element 8 for accelerating the vaporization of the fuel in a vaporizing chamber 7 for vaporizing the supplied fuel. The doughnut is formed so as to surround the mixing tube 9, and the heater 1
0 and vaporizer temperature detecting means 11 are provided.

Reference numeral 12 denotes a communication passage provided to the nozzle 13 on the side opposite to the mixing pipe 9 with respect to the inlet of the oil supply pipe 5 of the vaporizing section 6.

A return pipe 14 connected to the tank 2 and an electromagnetic solenoid 15 are connected to the nozzle 13.
The electromagnetic solenoid 15 is provided with a needle valve 16 for opening and closing the nozzle hole 13A of the nozzle 13.

Reference numeral 17 denotes a burner mounted on the upper portion of the vaporizer 6 so as to cover the outlet of the mixing pipe 9, and burns the vaporized gas ejected from a flame hole 18 formed in the peripheral wall of the burner 17 in the vicinity. There is provided an ignition means 19 for starting high pressure discharge or the like.

Reference numeral 20 denotes a combustion tube for guiding the combustion gas from the burner section 17 upward, and a blower 21 for taking in and sending out the indoor air flow is disposed at the back of the combustion tube. Reference numeral 22 denotes a duct that mixes the combustion gas from the combustion tube 20 with the indoor air flow to generate hot air.

In FIG. 2, reference numeral 23 denotes a pump 4 based on a signal of an operating condition such as a control temperature input from an operation unit 24 or a signal of a sensor such as a vaporization unit temperature detecting means 11 provided in the apparatus. The control unit controls the operation of a device that starts and stops combustion by controlling the heater 10, the electromagnetic solenoid 15, the blower 21, and the like in a predetermined sequence.

The control unit 23 has an extension control unit 25 for stopping combustion after a predetermined time has elapsed. The operation unit 24 releases the combustion stop after the predetermined time has elapsed, and counts the predetermined time from that time. And a notice to stop combustion after a predetermined time has elapsed at the time of combustion, and release the combustion stop after the predetermined time has elapsed when the extension button 26 is pressed during this notice. The counting of the predetermined time is started, the electromagnetic solenoid 15 is operated instantaneously, and the needle valve 16 instantaneously closes and opens the nozzle hole.

In the above configuration, the vaporizing section 6 includes the heater 10
As a result, the oil is heated to the first predetermined temperature, and the oil entering from the inlet of the oil feed pipe 5 is vaporized by the vaporizing element 8 of the vaporizing chamber 7. The vaporized gas is supplied to the communication passage 1 below the vaporizing section 6.
2 flows downward through nozzle 2 and reaches nozzle 13, which activates electromagnetic solenoid 15 to open needle valve 16 and
When the vaporized gas is blown out from 3, the vaporized gas is supplied into the burner section 17 through the mixing pipe 9 while sucking and mixing the surrounding air, and is blown out from the flame hole 18 portion.

Here, when the ignition means 19 is provided, uniform flame is formed in the large number of flame holes 18 to start combustion, and even when the ignition means 19 is stopped, the pump 4 supplies fuel to the vaporizing section 6 as it is. If it continues, the combustion will continue.

The generated combustion gas is guided upward by a combustion tube 20 disposed so as to cover the periphery of the burner section 17, and mixed with a room air flow from a blower 21 by a duct 22 covering the combustion tube 20. It is discharged as warm air and used for heating. The control unit 23 controls the operation unit 2
When the fuel supply amount is adjusted by changing the drive frequency and applied voltage of the pump 4 based on the operating condition signal and the like input from the engine 4, the primary air amount increases and decreases accordingly, and the fuel-air ratio is kept constant. The amount of combustion can be changed as it is.

FIG. 4 is a flowchart showing a sequence at the time of combustion of the warm air heater using the first embodiment of the present invention.

First, when a first predetermined time has elapsed from the start of combustion, a lamp is blinked for a second predetermined time to notify that the combustion is to be stopped, and at step 27, the electromagnetic solenoid 15 is operated instantaneously (for example, 100 msec) and the needle valve 1 is turned on.
At 6, the nozzle hole 13 </ b> A of the nozzle 13 is closed, and the fuel in the vaporizing section 6 is returned to the tank 2 via the return pipe 12 and immediately returns to the normal combustion state. If the extension button 26 is not pressed within the second predetermined time, the combustion is stopped. When the extension button 26 is pressed, the stop of combustion after the lapse of the first predetermined time is released, and the count of the first predetermined time is started from that time.

At the time of combustion, after the first predetermined time elapses, the electromagnetic solenoid 15 is operated so as to perform an operation of instantly closing and opening the nozzle hole 13A with the needle valve 16 to remove tar adhering to the nozzle hole 13A and the needle valve 16. Since it is removed, the vaporized gas ejected from the nozzle 13 stops instantaneously, but is mixed and relaxed with the vaporized gas before and after in the process of reaching the flame hole 18 in the burning portion of the burner part 17, and the combustion is momentarily reduced, but continues. At the same time, the tar removed from the nozzle hole 13A and the needle valve 16 is removed together with the vaporized gas from the nozzle hole 13A, and is burned in the combustion portion of the burner 17 without adhering to other portions. Will be done. Therefore, the nozzle hole 13A and the needle valve 16
The amount of tar adhering to the nozzle hole 13A can be surely removed before it accumulates, so that the amount of combustion generated by the tar adhering to the nozzle hole 13A can be prevented from fluctuating and the flow of the vaporized gas can be prevented from being hindered. The needle valve 16 is prevented from sticking due to tar, and the fuel accumulated in the vaporization chamber 7 at the time of fire extinguishing is discharged from the nozzle hole 13A.
White smoke and odor can be prevented, and fire can be reliably extinguished.

(Embodiment 2) FIG. 5 is a flowchart showing a sequence at the time of combustion of a hot air heater according to Embodiment 2 of the present invention.
FIG. 6 shows a sequence at the time of stopping the combustion of the hot air heater using the second embodiment of the present invention.

First, as shown in the flow chart of FIG. 5, during the combustion, when a first predetermined time has elapsed from the start of combustion, a lamp is blinked for a second predetermined time to give an advance notice of stopping the combustion, and for a second predetermined time. Extension button 26 inside
Is pressed, the combustion stop after the first predetermined time has elapsed is released, and the counting of the first predetermined time is started from that time. At the same time, when the extension button 26 is pressed, the electromagnetic The solenoid 15 is operated instantaneously, and the needle valve 16 is
3A is closed, and the fuel in the vaporization section 6 is returned to the tank 2 via the return pipe 12 and immediately returns to the commercial combustion state.

Next, as shown in the flow chart of FIG. 6, when combustion is stopped, when the extension button 26 is pressed, the electromagnetic solenoid 15 is instantly activated in step 29 and the nozzle hole 13A is instantaneously closed by the needle valve 16 and thereafter. It is configured to perform an opening operation.

In addition to the effect of the first embodiment, when the extension button 26 is depressed during combustion or non-combustion, the electromagnetic solenoid 15 is instantaneously activated, and the nozzle valve 13A is instantaneously closed by the needle valve 16 (for example, 100 msec). Since the opening operation is performed, the tar adhering to the nozzle hole 13A and the needle valve 16 can be removed even during non-combustion, and the tar adhering to the nozzle hole 13A and the needle valve 16 can be surely removed without much accumulation. Become like
Furthermore, when the user consciously presses the extension button 26, tar adhering to the nozzle hole 13A and the needle valve 16 can be removed, and the user's consciousness can be improved and more effective.

(Embodiment 3) FIG. 7 is a control block diagram of a hot air heater according to Embodiment 3 of the present invention. The control unit 23 has an extension control unit 25 for stopping combustion after a first predetermined time has elapsed. At the same time, the operation unit 23 has an extension button 26 for canceling the combustion stop after the lapse of the predetermined time and starting the counting of the predetermined time from that time.
And a confirmation sound generating means 30 such as a buzzer for confirming that the extension button 26 has been pressed when the user presses the button.

FIG. 8 is a flowchart showing a sequence at the time of combustion. First, when a first predetermined time elapses from the start of combustion, a lamp is flashed for a second predetermined time to notify that combustion will be stopped, and the extension button 26 will be activated within the second predetermined time.
Is pressed, in step 31, the notifying means 30 such as a buzzer for confirming that the extension button 26 has been pressed is activated, and the combustion stop after the lapse of the first predetermined time is released and the first predetermined time is counted from that time. The electromagnetic solenoid 15 is instantaneously actuated for a predetermined time at the same time when the extension button 26 is pressed in step 32, and the needle valve 16 closes the nozzle hole 13 </ b> A of the nozzle 13. After the fuel is returned into the tank 2 via the return pipe 12, it immediately returns to the normal combustion state. Further, when the extension button 26 is pressed during non-combustion, the electromagnetic solenoid 15 is instantaneously actuated, and the needle valve 16 instantaneously closes and opens the nozzle hole 13A.

When the extension button 26 is depressed during combustion, the notifying means 30 is activated, and at the same time, the electromagnetic solenoid 15 is instantaneously activated, and the nozzle valve 1 is opened by the needle valve 16.
Since the 3A is closed (for example, 100 msec) and then opened, the operation sound of the electromagnetic solenoid is cut off by the notification means when the extension button 26 is pressed, and the user's consciousness is improved. , Can be more effective.

In the above embodiment, the electromagnetic solenoid 15 is instantaneously operated in synchronization with the sequence for stopping the combustion after the first predetermined time has elapsed. However, this is regardless of the sequence for stopping the combustion at the first predetermined time. The electromagnetic solenoid 15 may be instantaneously operated irregularly, and the configuration of each component may be any configuration as long as the object of the present invention is achieved.

[0043]

As described above, the hot-air heater of the present invention is operated periodically or irregularly at the time of combustion to instantaneously operate the nozzle hole with the needle valve (for example, 100 msec).
An electromagnetic solenoid is operated to close and then open to remove tar adhering to the nozzle hole and needle valve, so the vaporized gas ejected from the nozzle stops instantaneously, but until the burner burns. During the process, the mixture with the vaporized gas before and after is relaxed and combustion is reduced for a moment. The fuel is burned without adhering to other parts in the combustion part of the part. Therefore, the tar adhering to the nozzle hole and the needle valve can be reliably removed without being accumulated so much, and the amount of combustion generated by the tar adhering to the nozzle hole can be prevented from fluctuating and obstructing the flow of the vaporized gas. Prevents sticking of the needle valve caused by tar adhering to the needle valve, and fuel accumulated in the vaporization chamber at the time of fire extinguishing is discharged from the nozzle hole, preventing generation of unburned vaporized gas and odor, and shortening the fire extinguishing time. be able to.

When the extension button is depressed during combustion or non-combustion, the electromagnetic solenoid is instantly activated, and the nozzle valve is instantly closed and then opened with the needle valve. In addition, the tar adhering to the nozzle hole and the needle valve can be removed, and the tar adhering to the nozzle hole and the needle valve can be surely removed without much accumulation. Furthermore, when the user consciously presses the extension button, the tar adhering to the nozzle hole and the needle valve can be removed, and the user's consciousness is improved and can be made more effective.

When the extension button is pressed during combustion, the notifying means is activated, and at the same time, the electromagnetic solenoid is activated instantaneously, and the nozzle hole is instantaneously (eg, 10
(0 msec) Since the operation of opening after closing is performed, in addition to the above-mentioned effects, the operation sound of the electromagnetic solenoid is cut off by the notification means when the extension button is pressed, and the user's consciousness is improved and can be made more effective.

[Brief description of the drawings]

FIG. 1 is a control block diagram of a hot air heater according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the hot air heater.

FIG. 3 is a sectional view of a main part of the hot air heater.

FIG. 4 is a flowchart at the time of combustion of the hot air heater.

FIG. 5 is a flowchart at the time of combustion of a warm air heater according to Embodiment 2 of the present invention.

FIG. 6 is a flowchart at the time of stopping combustion of a hot air heater according to Embodiment 2 of the present invention.

FIG. 7 is a control block diagram of a hot air heater according to a third embodiment of the present invention.

FIG. 8 is a flowchart at the time of combustion of the hot air heater.

FIG. 9 is a sectional view of a conventional hot air heater.

FIG. 10 is a sectional view of a main part of a conventional hot air heater.

[Explanation of symbols]

 2 Tank 4 Pump 6 Vaporizing section 10 Heater 11 Vaporizing section temperature detecting means 13 Nozzle 13A Nozzle hole 15 Electromagnetic solenoid 16 Needle valve 17 Burner section 20 Combustion cylinder 23 Control section 24 Operation section 25 Extension control section 26 Extension button 30 Notification means

Claims (3)

[Claims] A pump for sucking and discharging fuel from a tank;
A vaporization unit for vaporizing fuel supplied by the pump;
An electromagnetic solenoid provided with a heater for heating the vaporizing section, temperature detecting means for detecting the temperature of the vaporizing section, a nozzle hole for ejecting fuel vaporized gas from the vaporizing section, and a needle valve for opening and closing the nozzle hole; And a control unit that controls the operating conditions of the pump and the electromagnetic solenoid to control the combustion of the burner unit.This control unit instantaneously operates the electromagnetic solenoid during combustion. Combustion device that opens and closes the nozzle hole with a needle valve instantly. The control unit has an extension control unit for stopping combustion after a predetermined time has elapsed, and the operation unit cancels the combustion stop after the predetermined time has elapsed, and from that time, an extension for starting the counting of the predetermined time. 2. The combustion apparatus according to claim 1, further comprising a button, wherein when the extension button is pressed, the electromagnetic solenoid is instantaneously actuated to instantaneously close and open the nozzle hole with the needle valve. 3. The control section has an extension control section for stopping combustion after a predetermined time has elapsed, and the operation section has an extension for canceling the combustion stop after the predetermined time has elapsed and starting counting of the predetermined time from that time. A button and a notification means such as a buzzer that confirms that the extension button has been pressed when the extension button is pressed during combustion, activates the notification means when the extension button is pressed, and instantaneously activates the electromagnetic solenoid. 2. The combustion device according to claim 1, wherein the operation of closing and opening the nozzle hole with the needle valve is performed.