JPH0354242B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an oil combustor with an upper and lower wick.

Conventionally, as shown in FIG. 4, in a wick type oil combustor, a suction means 2 consisting of a turbo fan or the like is provided in communication with the inside of an oil tank 1. Some devices are designed to be activated to greatly reduce the amount of exhalation during extinguishing a fire. That is, by operating the suction means 2, petroleum vapor that is about to flow out into the combustion cylinder 4 by the draft is sucked into the oil tank 1, and released into the atmosphere without being thermally decomposed, etc., thereby producing an irritating effect. Products designed to significantly reduce fire extinguishing odors have begun to be seen.

Problems to be Solved by the Invention However, the suction means 2 includes a motor 5, a fan 6, a fan case 7, and a control circuit (not shown).
etc., which increases the cost considerably. Therefore, reducing the odor during fire extinguishing alone will result in poor cost performance.

The present invention was made in view of these points.
The purpose of the present invention is to reduce odor during extinguishing and at the same time reduce standing flames caused by pressure increase in the oil tank due to wick drop, thereby achieving high cost performance.

Means for Solving the Problems In order to achieve the above object, the present invention provides a suction fan in a passage that communicates the inside of the oil tank with the atmosphere, and bypasses this fan to connect the inside of the oil tank and the outlet of the passage. A communicating bypass passage is provided, and a valve is provided at the outlet of the passageway, which opens when the pressure in the oil tank increases during fan operation and when the core falls.

Effect: With the above-described configuration of the present invention, petroleum vapor generated during fire extinguishing is sucked to suppress fire extinguishing odor, and the rise in pressure inside the oil tank due to wick drop is released to the atmosphere, thereby preventing the occurrence of standing flames. I come to do it.
Therefore, the cost performance of the suction means is also high.

Embodiment An example of the embodiment will be described below with reference to FIGS. 1 to 3. Reference numeral 11 indicates an oil tank, 12 indicates a core guide tube installed upright in the oil tank 1, and 13 indicates a core fixed on the oil tank 11. An outer cylinder, 14 is a core gap formed by the core guide cylinder 12 and the core outer cylinder 13, and 15 is this core gap 1.
The tip of the wick is exposed to an appropriate extent above the inner and outer cooking pans 12' and 13' of the core guide tube 12 and the outer core tube 13, respectively. Reference numeral 16 denotes a lead up/down mechanism, which is configured to allow emergency (rapid) lowering of the lead 15. Reference numeral 17 denotes a combustion cylinder, which is placed on the inner fire pan 12' and the outer fire pan 13', and is configured to perform mixing and combustion therein. 1
8 is a suction means fixed on the oil tank 11, which sucks and discharges the air in the oil tank 11 from the suction port 19 of the oil tank 11.The structure will be explained below. The oil tank 11 and the atmosphere 21 are
A passage 22 is formed to communicate with each other. A fan 23 is provided in the middle of the passage 22 and is driven by a motor 24 attached to the fan case 20. Reference numeral 25 denotes a bypass passage that bypasses the fan 23 and connects the inside of the oil tank 11 and the outlet 22a of the passage 22, and in this embodiment, it is formed by making a hole in the wall of the oil tank 11 that covers the fan case 20. It has been done. 26 is the outlet 22a of the passage
This valve is normally closed and is configured to be pushed open by the pressure inside the oil tank 11 when the fan 23 rotates or the core drops and the pressure inside the oil tank 11 increases. Figure 3 shows the motor 2
4, a switch 27 is connected to the power supply circuit to the motor 24, and is provided near the lead up/down mechanism 16 so as to be switched when the lead 15 is lowered. In other words, the above switch 2
7 switches to the normally open terminal 27a side when the core 15 falls, turns on the transistor 28, and supplies electricity from the dry battery 30 to the motor 24 while the charging voltage of the capacitor 29 turns on the transistor 28. In other words, the fan 23 is operated.

In the above configuration, if the wick up and down mechanism 16 is operated to expose the wick 15 to an appropriate length on the inner fire pan 12' and the outer fire pan 13' and ignite it, it will burn in the combustion tube 17 and heat can be taken. When the wick up/down mechanism 16 is operated, the wick 15 rapidly descends and sinks into the wick gap 14 to a predetermined depth, extinguishing the fire. At this time, the switch 27 is switched to the normally open terminal 27a side, and the charging voltage of the capacitor 29 turns on the transistor 28 to supply electricity to the motor 24 of the suction means 18. This causes the fan 23 to operate and suck and discharge the air within the oil tank 11. As a result, the inside of the oil tank 11 becomes negative pressure, and air flows in (is sucked in) from the core gap 14.
Petroleum vapor from the wick 15 is sucked into the oil tank 11, pushes open a valve 26 provided at the outlet 22a of the passage 22, and is released to the outside. This operation is performed by capacitor 2
The charging voltage of 9 continues to turn on the transistor 28, for example, for one minute.

On the other hand, when the core 15 rapidly descends, the fan 2
Before oil tank 3 starts to rotate, oil tank 1
The pressure inside the core 15 increases by the volume of the core 15 that has decreased. Conventionally, this pressure was discharged from the core gap 14 and caused a large standing flame. That is, the above pressure is applied to either the core gap 14 or the passage 22,
Or try to emit it into the atmosphere from both,
On the passage 22 side, there is a large low-pressure element called the fan 23, and the flow path resistance is greater than on the core gap 14 side, so this pressure is inevitably discharged from the core gap 14 side to the atmosphere, causing a momentary large rise. It was causing a flame.

However, in this oil combustor, a bypass path 25 is provided in the passage 22 of the suction means 18 that bypasses the fan 23 and has even less resistance than the core gap 14, so the pressure inside the oil tank 11 when the core drops is reduced. It is discharged through this bypass passage 25 to the passage outlet 22a of the suction means 18, and the passage outlet 22a is discharged through the bypass passage 25.
valve 26 is pushed open and released into the atmosphere. Therefore, there is no possibility of instantaneous flame formation when extinguishing a fire.

FIG. 2 shows another embodiment, in which the valve 26 provided at the passage outlet 22a of the suction means is arranged substantially vertically. According to this embodiment, since the closing force (valve weight) of the valve 26 that closes the passage outlet 22a is reduced, the flow path resistance is reduced accordingly, and pressure relief can be performed effectively and reliably. There are some advantages.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, the suction means can not only prevent the generation of an irritating odor when extinguishing a fire, but also prevent the instantaneous standing of a flame. It is possible to achieve high cost performance.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an oil combustor according to an embodiment of the present invention, Fig. 2 is a sectional view of main parts showing another embodiment of the present invention, Fig. 3 is a control circuit diagram of the suction means, and Fig. 4 is a conventional oil combustor. FIG. 3 is an example cross-sectional view. 11... Oil tank, 12... Core guide tube, 13...
...Core outer cylinder, 14... Core gap, 15... Core, 16...
... Core vertical mechanism, 18 ... Suction means, 22 ... Passage, 22a ... Passage outlet, 23 ... Fan, 25
...bypass path, 26...valve.

Claims (1)

[Scope of Claims] 1. An oil tank having a core gap formed by a core guide cylinder and a core outer cylinder, a core disposed vertically movably within the core gap of this oil tank, and a core that is vertically movable. It is equipped with a wick up-and-down mechanism that moves the wick up and down, and a suction means that sucks air in the oil tank when the wick is lowered. a bypass passage that bypasses the fan and connects the inside of the oil tank and the outlet of the passage, and a valve that is provided at the outlet of the passage and opens when the pressure in the oil tank increases when the fan is operated or when the core is lowered. An oil burner consisting of. 2. The oil combustor according to claim 1, wherein the valve provided at the outlet of the passage is arranged in a substantially vertical direction.