JPH05302716A - Combustion device for kerosine - Google Patents

Abstract

PURPOSE:To eliminate the possibility of backfire at the time of extinguishment of fire and improve the safety relating to a combustion device for kerosine designed to extinguish the fire when the cartridge tank is taken out during combustion. CONSTITUTION:A combustion device for kerosine is equipped with a suction device 23 for reducing the odor accompanying extinguishment designed to suck in air in an oil tank 11 at the time of extinguishment of fire, with a controller 28 for controlling the performance of the suction device, and with a switch 22 which opens when a cartridge tank 18 supplying oil to the oil tank is taken out or with a temperature switch 33 which opens if the temperature in the oil tank 11 rises, and designed to make the suction device 23 inoperative when the switch 22 or the temperature switch is opened. When the fire is extinguished after taking out the cartridge tank 18, the suction device 23 does not work. With no possibility of backfire into the oil tank 11, the combustion device is an improvement with regard to safety.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper and lower core type oil combustor.

[0002]

2. Description of the Related Art Generally, an oil combustor of an upper and lower wick type is equipped with a wick 2 for sucking and vaporizing oil in an oil tank 1 as shown in FIG. 4, and the wick 2 is moved up and down to burn and extinguish a fire. It is like this. Further, the oil tank 1 has an oil tank 1
The suction means 3 is provided so as to communicate with the inside, and the suction means 3 is operated at the time of extinguishing the fire to reduce the odor generated at the time of extinguishing the fire. In order to ensure the safety of this oil combustor, when the cartridge tank 4 for replenishing the oil in the oil tank 1 is taken out during combustion, the wick 2 is suddenly lowered to forcibly extinguish the fire.

[0003]

However, when such a petroleum combustor is used and the user pulls out the cartridge tank 4 for replenishing oil during combustion, the fire is forcibly extinguished as described above. In that case, there was a rare case that flashback occurred due to the suction force of the suction means 3. This is likely to occur when the oil tank 1 has a high temperature and is in a condition where it is easy to catch fire.

The present invention solves such a problem, and an object of the present invention is to improve safety by eliminating the risk of flashback even if the cartridge tank is taken out during combustion.

[0005]

In order to achieve the above object, the present invention provides an oil tank having a core gap formed by a core guide cylinder and a core outer cylinder, and is vertically movable in the core gap of the oil tank. , A suction means for reducing the extinguishing odor that sucks the air in the oil tank when the core is lowered, a control section for controlling the operation of this suction means, and a detachable arrangement at the oil supply port of the oil tank. It is provided with a cartridge tank provided and a fire extinguishing mechanism for extinguishing the wick by lowering the core by taking out the cartridge tank, and incorporating a switch in the motor power supply circuit of the suction means which is closed when the cartridge tank is mounted and opened when the cartridge tank is mounted, or the suction means In the motor power supply circuit, a temperature switch that opens when the temperature inside the oil tank rises above a certain temperature, and this temperature switch is connected in parallel, and when a fire is extinguished by manual operation It is constituted by incorporating a and Tsune Jiru open switch.

[0006]

According to the present invention, even if the cartridge tank is taken out during combustion, the suction means does not operate and the backfire into the oil tank does not occur.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS. 1 and 2, 11 is an oil tank, 12 is a lead guide tube standing on the oil tank 11, and 13 is an outer core fixed on the oil tank 11. Cylinder,
Reference numeral 14 is a core gap formed by the core guide tube 12 and the core outer cylinder 13, and 15 is a core provided in the core gap 14. Batter 1
The tip of the 3'is properly exposed above the 3 '. Reference numeral 17 denotes a combustion cylinder, which is placed on the inner fire tray 12 'and the outer fire tray 13', and is configured to perform mixing and combustion inside thereof. Reference numeral 18 denotes a cartridge tank which is detachably attached to the oil supply port 19 of the oil tank 11 and supplies oil so as to maintain a constant oil level in the oil tank 11. Reference numeral 20 denotes a fire extinguishing mechanism for forcibly extinguishing by operating the core up-and-down mechanism 21 when the cartridge tank is taken out.
It is configured as disclosed in JP-A-3-318408. Reference numeral 22 denotes a switch arranged near the oil supply port 19 of the oil tank 11, which is closed when the cartridge tank 18 is mounted and opened when the cartridge tank 18 is taken out.

Reference numeral 23 is a suction means fixed on the oil tank 11 for sucking and discharging the air in the oil tank 11 from the suction port 11a of the oil tank 11. The structure of the suction tank 23 will be described below. The fan case covered on the suction port 11a forms a passage 25 for communicating the inside of the oil tank 11 with the atmosphere. A fan 26 is provided in the middle of the passage 25, and is driven by a motor 27 attached to the fan case 24. A control unit 28 controls the operation of the suction means 23 and is configured as shown in FIG.

The structure of the control unit 28 will be described below with reference to FIG. 2. Reference numeral 29 denotes a switch connected to a power supply circuit to the motor 27, which is provided near the core lifting mechanism 21 and lowers the core 15. At times, the contact is switched to the normally open contact 29a side. Reference numeral 22 is the above-mentioned switch, which is connected in series to the motor 27 of the suction means 23 and makes the motor 27 inoperative when the cartridge tank 18 is taken out.

That is, first, the switch 279 is the core 1
When 5 drops, it is switched to the normally open terminal 29a side, the transistor 30 is turned on, and while the charging voltage of the capacitor 31 is turning on the transistor 30, electricity is supplied from the dry battery 32 to the motor 27 via the switch 22. Sushi motor 2
7, that is, the fan 26 is operated.

On the other hand, the switch 22 is opened when the cartridge tank 18 is taken out to open the power supply circuit to the motor 27, and the motor 27, that is, the fan 26 is operated even if the lead 15 is dropped and the fire is extinguished when the cartridge tank 18 is taken out. do not do.

In the above construction, if the wick 15 is operated and the wick 15 is appropriately exposed on the inner and outer igniters 12 'and 13' and ignited, the wick 15 is burned in the combustion cylinder 17 to collect heat. Becomes When the lead up / down mechanism 21 is operated, the lead 15 rapidly descends and retracts to a predetermined depth within the lead gap 14 to extinguish the fire. At this time, the switch 29 is switched to the normally open terminal 29a, and the transistor 30 is turned on by the charging voltage of the capacitor 31.
Then, electricity is supplied to the motor 27 of the suction means 23. As a result, the fan 26 operates to suck and discharge the air in the oil tank 11. As a result, the inside of the oil tank 11 becomes a negative pressure, and the air flows (is sucked) from the core gap 14, and the petroleum vapor is sucked from the core 15 into the oil tank 11 and discharged from the passage 25 to the outside to reduce the odor. . This operation is continued for one minute, for example, while the transistor 30 continues to be turned on by the charging voltage of the capacitor 31.

On the other hand, if the user takes out the cartridge tank 18 for refueling while continuing the combustion, the switch 22 is opened and the motor 27 is made inoperative as described above. Therefore, even if the wick 15 is lowered and the fire is extinguished by taking out the cartridge tank 18, the suction means 23 does not operate, so that even if the temperature inside the oil tank 11 is high, a backfire is not caused.

FIG. 3 shows another embodiment. This embodiment is made by paying attention to the fact that the temperature inside the oil tank 11 is high when a flashback is likely to occur. That is, in FIG. 3, reference numeral 33 denotes a normally closed temperature switch provided at a proper position in the oil tank 11, which opens when the inside of the oil tank 11 reaches a constant temperature, that is, a temperature at which flashback easily occurs. It is connected in series to 27 feeding circuits. 34 is a normally open switch connected in parallel with the temperature switch 31,
Although not shown, it is configured to interlock with a fire extinguishing button for operating the wick up-down mechanism for extinguishing the fire, that is, to close when manually extinguishing the fire. The temperature switch 33 and the normally open switch 34 form a switch mechanism 35.

According to this structure, if the temperature inside the oil tank 11 becomes high due to continuous combustion, the temperature switch 33 opens,
The power supply circuit of the motor 27 is opened. Therefore, even if the cartridge tank 18 is taken out during the combustion, the motor 27 does not operate, and the flashback can be prevented as in the above embodiment. Further, even if the temperature switch 33 is opened, when the fire is extinguished manually, the normally open switch 34 connected in parallel with the temperature switch 33 is closed, so that the motor 27 is supplied with power through the normally open switch 34, and the suction means 23 becomes Operates without any problems.

[0016]

As is apparent from the above description of the embodiments of the present invention, according to the present invention, it is possible to prevent the generation of an irritating odor during extinguishing by the suction means, and even if the cartridge tank is taken out during the extinguishing of the fire. There will be no flashback in the oil tank, improving safety.

[Brief description of drawings]

FIG. 1 is a sectional view of an oil combustor according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of a control circuit that controls the suction means of the petroleum combustor.

FIG. 3 is a circuit diagram of another control circuit for controlling the suction means of the oil combustor.

FIG. 4 is a sectional view of a conventional oil combustor.

[Explanation of symbols]

 11 Oil Tank 12 Lead Guide Tube 13 Lead Outer Tube 14 Lead Gap 15 Lead 18 Cartridge Tank 19 Filling Port 20 Fire Extinguishing Mechanism 22 Switch 23 Suction Means 27 Motor 28 Controller 33 Temperature Switch 34 Normally Open Switch 35 Switch Mechanism

Claims (2)

[Claims] 1. An oil tank having a core gap formed by a core guide cylinder and a core outer cylinder, a core vertically movably arranged in the core gap of the oil tank, and an oil tank in the oil tank when the core descends. Suction means for sucking air to reduce fire extinguishing odor, a control section for controlling the operation of this suction means, a cartridge tank detachably arranged at the oil supply port of the oil tank, and a lead down by taking out the cartridge tank. A petroleum combustor equipped with a fire extinguishing mechanism for extinguishing it by fire and a switch which is closed when the cartridge tank is mounted and opened when the cartridge tank is taken out, and the switch is incorporated in the motor power supply circuit of the suction means to prevent the suction means from operating when the cartridge tank is taken out. .. 2. An oil tank having a core gap formed by a core guide cylinder and a core outer cylinder, a core vertically movable in the core gap of the oil tank, and an oil tank inside the oil tank when the core descends. Suction means for sucking air to reduce fire extinguishing odor, a control section for controlling the operation of this suction means, a cartridge tank detachably arranged at the oil supply port of the oil tank, and a lead down by taking out the cartridge tank. A fire extinguishing mechanism for extinguishing the fire and a switch mechanism incorporated in the motor power supply circuit of the suction means are provided, and the switch mechanism is connected in parallel with the temperature switch that opens when the temperature inside the oil tank exceeds a certain temperature. , An oil combustor configured with a normally open switch that closes when the fire is extinguished manually.