JP2696318B2 - Oil fire extinguisher - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fire extinguisher that extinguishes a fire in a short time by a core lowering operation. [Prior art] The applicant has proposed Japanese Patent Publication No. 61-25962 as a fire extinguishing device that can extinguish a fire in a short time only by lowering the core with the vertical axis of the core.
An oil combustor equipped with this device is commercially available.
Although the configuration and operation of this fire extinguishing device are described in detail in the above-mentioned publication, the main part will be described. The gap 2 of the core housing cylinder 1 of the oil combustor is made larger than the thickness of the core 3 to enable air circulation, An air chamber 4 is provided adjacent to the wick housing cylinder 1 and a structure is provided for supplying air during normal combustion from the air chamber 4 and the wick housing cylinder 1 to the combustion section. For this reason, the air chamber 4 is always filled with fresh air during the burning of the oil combustor. When the outside air introduction hole of the air chamber 4 was closed during the fire extinguishing operation and the wick 3 was lowered below the opening 5 communicating the air chamber 4 and the gap of the wick housing cylinder 1, the wick 3 was drawn into the gap 2 with the descent of the wick 3. The flame consumes oxygen in the closed air chamber 4 from the opening 5 to make the air chamber 4 a non-combustible gas chamber, and the oil gas vaporized from the wick 3 diffuses into the air chamber 4 and the oil gas in the wick accommodating cylinder gap 2 is removed. It is diluted to a state where combustion can not be continued,
Extinguish a fire. And since this fire extinguishing system does not extinguish the fire by blowing off the oil gas around the core at the time of fire extinguishing or cooling or thinning by introducing air from the outside, there is little odor at the time of fire extinguishing . [Problems to be Solved by the Invention] By the way, in the above fire extinguisher, since the on-off valve of the air chamber is always open during normal combustion, when the wind blowing on the oil combustor goes directly to the on-off valve, the combustion section is drafted. An abnormally large amount of air is supplied to the air chamber with respect to the set inflow air amount, and the combustion state deteriorates. Generally, when gasoline of this type is accidentally burned with highly volatile gasoline, gasoline vapor leaks from the opening of the oil tank, for example, from the tray of the cartridge oil tank, and this gasoline vapor is burned. The flame of the part ignites the opening of the pan and the like other than the combustion part, causing a fire, and no safety measures have been taken for this purpose. [Means for Solving the Problems] The present invention focuses on the fact that a fire extinguisher of an oil combustor draws air from a normally open / close valve portion, and has no effect of wind blown on the oil combustor. An on-off valve is mounted inward to prevent the effect of wind, and an air flow path is formed in the oil tank from, for example, an opening in a receiving tray to the on-off valve via the oil tank. For this reason, if gasoline with high volatility is used by mistake, the gasoline vapor in the oil tank flows from the on-off valve to the combustion section through the air chamber and burns. Steam is difficult to leak. That is to say, with reference to the drawings, which are examples, reference numeral 1 denotes a wick housing cylinder, 2 denotes a gap between the wick housing cylinders 1, and 3 denotes a combustion wick housed in the gap 2 of the wick housing cylinder 1. The core accommodating cylinder gap 2 accommodating the core 3 is made larger than the core thickness, and allows air circulation to such an extent that the combustion state is not affected. 4 is a core storage cylinder 1
The air chamber 5, which is provided adjacent to the opening 5, is an opening communicating the air chamber 4 and the core accommodating cylinder gap 2, and the opening 5 is provided at a position higher than the upper end of the combustion wick 3 when the core is lowered. 6 is an air chamber 4
The on-off valve 6 is open in the upper space of the oil tank 7. Reference numeral 8 denotes a core vertical axis, 9 denotes a core vertical mechanism, and a pinion gear 10 at the tip of the core vertical axis 8 rotates a core vertical cylinder 12 via a rack gear 11. The core 3 is moved up and down via the drive pins 14. The open / close valve 6 is operated by a drive cam 15 attached to the core vertical cylinder 12, and is closed when the core is lowered and opened when the core is raised. Reference numeral 16 denotes a receiving tray of the oil tank 7, and 17 denotes a cartridge tank. The oil tank 7 communicates with the outside air through openings such as small holes 18 of the receiving tray 16. [Explanation of Operation] Since the oil level of the oil tank 7 of this type of oil combustor decreases with the progress of combustion, an opening for taking in outside air is required in the oil tank. It communicates with the outside air through holes and slits in the packing part for attaching the core adjuster cover and small holes in the tray of the cartridge tank. The on-off valve 6 attached to the air chamber 4 of the present invention is open in the oil tank 7. When the on-off valve 6 is opened during normal use, outside air flows from the upper space of the oil tank 7 through the on-off valve 6 through the air chamber 7. 4 and a flow path is formed from the opening 5 of the wick housing cylinder 1 to the combustion chamber through the wick housing cylinder gap 2. Even when the oil combustor is used, the temperature of the oil tank 7 is low and the vaporization of the oil gas is very slight. Therefore, the air in the air chamber 4 is almost the same as the outside air. By the operation of 5, the oil combustor can be extinguished in a very short time. Even if wind is blown to the oil combustor, the combustion state is not deteriorated without affecting the air in the oil tank 7. Also, when gasoline is used by mistake, gasoline in the oil tank continues to vaporize even at room temperature. The gasified gasoline is supplied from the on-off valve 6 to the air chamber 4 instead of the outside air.
Into the combustion section from the wick housing cylinder gap 2 to burn to the outside. It is possible to prevent gasoline vapor from leaking outside through openings such as the small holes 18 in the tray 16 into which the outside air of the oil tank 7 flows. Can prevent fires and other troubles. When using gasoline, the air chamber 4 is filled with gasoline vapor,
Short-term fire extinguishing cannot be expected. [Explanation of Effect] As described above, in the present invention, the on-off valve 6 attached to the air chamber 4 is opened in the oil tank 7 so that the air flowing into the air chamber 4 flows through the upper space of the oil tank 7. , The upper space of the large oil tank 7 becomes an air buffer chamber,
The effect of the wind blowing on the oil combustor was completely prevented. When gasoline was accidentally used in this kind of oil combustor, almost all fires occurred, but in the structure of the present invention, most of the evaporated gasoline flows to the combustion section through the air chamber 4 and burns. As a result, the leakage of gasoline vapor from the oil tank 7 to the outside has disappeared. For this reason, the number of fires caused by the use of gasoline has been extremely reduced, and the safety of oil combustors has been improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of the present invention, FIG. 2 is a sectional view of a main part, and FIG. 3 is a transverse sectional view. DESCRIPTION OF SYMBOLS 1 ... Core storage cylinder, 2 ... Gap, 3 ... Core, 4 ... Air chamber, 5 ... Opening, 6 ... Open / close valve, 7 ... Oil tank

Claims (1)

(57) [Claims] The gap 2 of the core housing cylinder 1 is made larger than the thickness of the core 3 so that air can flow therethrough, and an air chamber 4 is provided adjacent to the core housing cylinder 1 so that the core at a position higher than the upper end of the core 3 when the core is lowered An opening 5 formed in the housing cylinder 1 communicates the gap 2 with the air chamber 4, and the air chamber 4 is provided with an opening / closing valve 6 linked to the up and down of the core. A fire extinguisher for an oil combustor, which is sometimes closed, wherein the on-off valve (6) opens into an oil tank (7) communicating with the outside air.