JP6829655B2 - Foam generator, compressed gas foam fire extinguisher and compressed gas foam fire extinguishing system - Google Patents

Description

The present invention relates to a foam generator, a compressed gas foam extinguisher (Compressed Gas Foam Extinguisher) and a compressed gas foam fire extinguishing system (Compressed Gas Foam System), and more particularly, water, a foam stock solution, and a pressurized gas. The present invention relates to a foam generator, a compressed gas foam fire extinguisher, and a compressed gas foam fire extinguishing system capable of producing a dense and uniform foam by mixing with.

Generally, a fire extinguisher is used to prevent or control a fire. Such a fire extinguisher extinguishes a fire by using the cooling or air blocking effect of the fire extinguishing agent in the initial stage of the fire.

At this time, the fire extinguisher is a liquid fire extinguisher such as a water fire extinguisher, an acid-alkali fire extinguisher, a strengthening liquid fire extinguisher, a foam fire extinguisher, etc. It is classified into a gas-based fire extinguisher such as a clean fire extinguisher chemical fire extinguisher and a solid-based fire extinguisher such as a powder fire extinguisher.

In particular, powder fire extinguishers are classified into pressurized fire extinguishers and accumulator type fire extinguishers. A pressurized fire extinguisher is a fire extinguisher in which compressed gas, which is the radiation source of the fire extinguishing agent, is enclosed in a special container (pressure cylinder) separate from the main body container containing the fire extinguishing agent, and the seal plate of the pressure cylinder is destroyed. It is a fire extinguisher that radiates through the operation of.

The pressure-accumulation type fire extinguisher is a fire extinguisher in which a gas that is a radiation source of a fire extinguishing agent is sealed in a main body container together with the fire extinguishing agent in an accumulated pressure state. The pressure-accumulation type fire extinguisher is based on the principle that when the grip is gripped after removing the safety plug, the gas in the pressure-accumulation state radiates the chemical to the outside. The pressure-accumulation type fire extinguisher has an advantage that it is easy to operate because the fire extinguishing agent is radiated only when the grip part is held.

Further, the fire extinguisher is subdivided into the above-mentioned types of foam fire extinguisher, powder fire extinguisher, halide fire extinguisher, carbon dioxide fire extinguisher and the like, and is used according to each situation.

Here, foam fire extinguishers are further classified into chemical foam fire extinguishers and mechanical foam fire extinguishers. The chemical foam fire extinguisher is configured to foam by the reaction of sodium hydrogen carbonate (agent A) and aluminum sulfate (agent B). On the other hand, the mechanical foam fire extinguisher is configured to foam an aqueous foam solution in which water and a stock solution of foam are mixed at a constant ratio. Currently, mechanical foam fire extinguishers are mainly used. A mechanical foam fire extinguisher emits foam generated by the inhaled gas. The inhalation of gas in a mechanical foam fire extinguisher is due to the Venturi effect. That is, the mechanical foam fire extinguisher sucks in an external gas by the flow velocity (pressure drop) when radiating the aqueous foam solution, and mixes this gas with the aqueous foam solution to foam. Air or an inert gas is used as the gas to be mixed with the foam aqueous solution. In such a mechanical foam fire extinguisher, the inhaled gas forms an aggregate of fine bubbles in which water and an aqueous foam solution are mixed at a constant ratio. The aggregate of such fine bubbles covers the surface of the combustible material to block the air, thereby exerting a suffocation fire extinguishing effect, and the water contained in the bubbles exerts a partial cooling fire extinguishing effect.

A technique related to such a foam fire extinguisher is proposed in the Korean Registered Utility Model No. 0401639.

Hereinafter, as a prior art, the nonflammable foam fire extinguisher disclosed in the Korean Registered Utility Model No. 0401639 will be briefly described.

FIG. 1 is a schematic combined cross-sectional view showing a nonflammable foam fire extinguisher disclosed in Korea Registered Utility Model No. 0401639 (hereinafter referred to as “conventional technology”). In FIG. 1, the conventional non-combustible foam fire extinguisher mainly has a configuration in which both non-combustible foam and its foam launcher are stored in a foam storage cylinder.

As shown in FIG. 1, the conventional nonflammable foam fire extinguisher is characterized in that it is composed of a lower fire extinguishing agent storage cylinder 2 and an upper foam storage cylinder 1. The fire extinguishing agent 27 is stored inside the body of the fire extinguishing agent storage cylinder 2, and the fire extinguishing agent ejection pipe 4 is connected. On the outside of the body of the fire extinguishing agent storage cylinder 2, a fire extinguishing agent operating grip portion and lever 7 for controlling the ejection or radiation of the fire extinguishing agent 27 is provided. On the other hand, a nonflammable foam 30 and a launching device thereof are internally provided inside the body of the upper foam storage cylinder 1, and a fire extinguishing agent ejection pipe 4 of the fire extinguishing agent storage cylinder 2 is formed. On the outside of the body of the upper foam storage cylinder 1, a foam operating grip portion and lever 5 for controlling the operation of the launching device sealed by the lids 18 and 19 is provided.

Korea Registered Utility Model No. 0401639

In the nonflammable foam fire extinguisher according to the above-mentioned prior art, the fire extinguishing agent can be radiated to the fire point to temporarily suppress the fire. However, since the outside air was continuously supplied to the fire point, even if the fire seemed to be extinguished, it reignited, and it often became extremely difficult to suppress the initial fire.

Therefore, in order to quickly suppress the ignition point at the time of the initial fire, it is necessary to radiate the fire extinguishing agent toward the ignition point, and the fire spreads by effectively blocking the vicinity of the ignition point from the outside air. We need a device that can prevent it.

The present invention has been devised to solve the above-mentioned problems, and adds CAFS (Compressed Air Foam System), which is a relatively large facility or device. It can be embodied in pressure-type and pressure-accumulation type fire extinguishers, and water, gas (preferably inert gas) and foam stock solution are mixed to induce a decrease in the surface tension of water and move to the combustible side. The purpose is to provide a high-performance and integrated compressed gas foam fire extinguisher that can induce faster and easier fire extinguishing through the promotion of permeation, secure a large surface area of water, and effectively utilize the heat of vaporization for cooling. And.

Although CAFS (compressed air foam fire extinguisher), which is a relatively large facility or device, existed before the priority date of the present application, the compressed gas foam fire extinguisher provided with the foam generating unit of the present invention (compressed gas foam fire extinguisher). Compressed Gas Foam Extinguisher and Compressed Gas Foam System did not exist. Therefore, the terms "compressed gas foam fire extinguisher", "CGFE" and "CGaFE" are coined words devised by the applicant. The terms "compressed gas foam fire extinguishing system", "CGFS" and "CGaFS" are also coined words devised by the applicant.

(1) In order to achieve the above object, the foam generating unit of the present invention is a part or structure provided in a siphon tube of a pressurized or accumulating foam fire extinguisher in which a container is filled with an aqueous foam solution. , An orifice portion formed through in the longitudinal direction so that the foam aqueous solution flowing into the siphon tube passes through, and a high-pressure gas inflow inlet formed through through the inlet opening in the container to communicate with the orifice portion. The foam aqueous solution is configured to form bubbles by bringing the gas flowing in from the high-pressure gas inflow port into contact with the foam aqueous solution passing through the orifice portion.

(2) Preferably, in the bubble generation portion of the above (1), the high-pressure gas inflow port may be formed to penetrate so as to incline upward from the lower inlet.

(3) Preferably, in the bubble generation portion of (2) above, the inclination angle of the high-pressure gas inflow port is 90 ° or more and 170 ° or less with respect to the central axis in the longitudinal direction of the orifice portion. Good.

(4) Preferably, in the foam generating portion according to any one of (1) to (3) above, the diameter d1 of the orifice portion is 3 to 4.5 mm, and the diameter d2 of the high pressure gas inflow port. May be configured to be 1.5 to 3.0 mm.

(5) Preferably, the foam generating portion according to any one of (1) to (4) above may be a component that is detachably provided on the siphon tube.

(6) In order to achieve the above object, in the compressed gas foam fire extinguisher of the present invention, the foam aqueous solution, the siphon tube, and a cartridge in which gas is stored in a compressed state are contained in the container. The siphon tube is accommodated, and the siphon tube is provided with the foam generating portion according to any one of (1) to (5) above.

(7) In order to achieve the above object, in the compressed gas foam fire extinguisher of the present invention, the foam aqueous solution, the siphon tube, and the inert gas as the gas are housed in the container. The inert gas is compressed at a predetermined filling pressure, and the siphon tube is provided with the foam generating portion according to any one of (1) to (5) above, with the foam generating portion as a reference. The upper side is filled with the inert gas, and the lower side is filled with the foam aqueous solution.

(8) In order to achieve the above object, the compressed gas foam fire extinguisher of the present invention stores a cartridge in which gas is stored in a compressed state and a foam stock solution in a container filled with water. The foam stock solution storage unit and the siphon tube into which the foam aqueous solution in which the water and the foam stock solution are mixed flow are accommodated so that the gas flows from the cartridge into the foam stock solution storage unit. It is configured so that the bottom of the foam stock solution storage portion can be removed by receiving pressure from the inside thereof.

(9) Preferably, in the compressed gas foam fire extinguisher according to any one of (6) to (8) above, a guide having at least a conical inner surface is provided at the lower end of the siphon tube. May be good.

(10) In order to achieve the above object, the compressed gas foam fire extinguisher of the present invention includes the compressed gas foam fire extinguisher according to any one of (6) to (9) above and the compressed gas foam fire extinguisher. A valve provided in the vessel, a pipe connected to the outlet of the valve, a nozzle connected to the pipe, a fire detector for detecting the occurrence of a fire, and a signal based on the detection result of the fire detector. The configuration includes a control unit for transmitting the gas and an activation device for opening the valve based on a signal from the control unit.

According to the present invention, water, an inert gas and bubbles are mixed to induce a decrease in the surface tension of water, and a faster and easier fire extinguishing is induced by promoting permeation to the combustible side to reduce the surface area of water. By securing a large amount and making effective use of the heat of vaporization for cooling, that is, by compressing spherical bubbles into flat flat polyhedrons through the realization of compressed gas bubbles, the bubbles are made into the ceiling. Since it is easily adhered to the vertical surface, it has the effect of improving the adhesiveness of the compressed gas bubbles and maximizing the fire extinguishing efficiency by increasing the expansion ratio and the radiation distance.

Further, the present invention has an effect that it can be applied to a conventional fire extinguisher because the foam generating portion is detachably provided on the siphon tube.

Further, the present invention has an effect that it can be applied to both a pressure type and a pressure accumulation type fire extinguisher.

It is a schematic connection sectional view which shows the nonflammable foam fire extinguisher which concerns on prior art. It is sectional drawing which shows the compressed gas bubble fire extinguisher which concerns on 1st Embodiment of this invention. It is an exploded view which shows the structure which the foam generation part is fixed in the middle of the siphon tube in the compressed gas foam fire extinguisher which concerns on 1st Embodiment. It is sectional drawing which shows the foam generation part of the compressed gas foam fire extinguisher which concerns on 1st Embodiment. In the compressed gas foam fire extinguisher according to the first embodiment, it is a photograph showing the relationship between the diameter of the high pressure gas inlet and the foam density, FIG. 1 (a) is a diameter of 1.5 mm, and FIG. 2 (b) is 2. 0 mm and FIG. 3C show the case of a diameter of 3.0 mm, respectively. It is a graph which shows the relationship between the diameter of a high pressure gas inlet and an expansion ratio in the compressed gas foam fire extinguisher which concerns on 1st Embodiment. It is a graph which shows the relationship between the diameter of a high pressure gas inlet, and the radiation distance in the compressed gas foam fire extinguisher which concerns on 1st Embodiment. It is sectional drawing which shows the compressed gas bubble fire extinguisher which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the compressed gas bubble fire extinguisher which concerns on 3rd Embodiment of this invention. It is the schematic which shows the compressed gas bubble fire extinguishing system which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those having ordinary knowledge in the technical field to which the present invention belongs can easily carry out the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. The same drawing reference numerals are given to similar parts throughout the specification.

<First Embodiment of Compressed Gas Foam Fire Extinguisher>
First, the configuration of the compressed gas foam fire extinguisher according to the first embodiment of the present invention will be described with reference to FIGS. 2 to 7 attached.

FIG. 2 is a cross-sectional view showing a compressed gas foam fire extinguisher according to the first embodiment of the present invention. In FIG. 2, the compressed gas foam fire extinguisher 100 according to the first embodiment of the present invention is an improvement over a pressurized fire extinguisher including a container 110, a cap 120, a lever 130, and a cartridge 140, and is a novel foam generating unit 150. Generates "bubbles" that are emitted on the surface of the fire. As used herein, the term "foam" may be described as "foam" or "compressed gas foam". Here, the lever 130 is an activation device that radiates bubbles when grasped by hand.

The container 110 is formed of aluminum, an aluminum alloy, or the like, and is filled with an aqueous foam solution in which water, which is a fire extinguishing agent, and a foam stock solution are mixed. Further, the material of the container 110 may be appropriately selected from iron, stainless steel, resin, glass fiber reinforced resin, and the like.

On the other hand, although not shown in the drawing, the container 110 is provided with a safety valve provided to prevent an excessive increase in internal pressure, a level gauge provided to confirm the amount of the aqueous foam solution used, and the aqueous foam solution. It may include a filling valve or the like provided for filling and draining.

The cap 120 seals the upper end inlet of the container 110 by screwing. The cap 120 is provided with a discharge port 122, a mounting bracket 124, a discharge hose 126, and a nozzle 126a.

The discharge port 122 is a passage through which the aqueous foam solution stored inside the container 110 and the pressurized gas of the cartridge 140 described later are mixed and discharged to the outside.

The mounting bracket 124 is provided at the lower end of the discharge port 122, and is provided so as to be fastened to the upper end of the cartridge 140, which will be described later, with a screw.

The discharge hose 126 is connected to the end of the discharge port 122, and can radiate bubbles in a direction-movable manner where a fire has occurred.

The nozzle 126a is connected to the end of the discharge hose 126 so that the bubbles generated by the bubble generation unit 150, which will be described later, are radiated without collapsing.

The siphon pipe (inflow pipe) 128 is connected to a line branched from the discharge port 122, and the foam aqueous solution inside the container 110 is discharged from the discharge port 122 when the lever 130 is gripped.

FIG. 3 is an exploded view showing a configuration in which a bubble generation unit 150, which will be described later, is fixed in the middle of the siphon tube 128. As shown in FIG. 3, the siphon tube 128 is divided into two, and the upper and lower surfaces of the bubble generating portion 150, which will be described later, are connected between the two divided siphon tubes 128. The foam generating unit 150 may be detachably connected to the siphon tube 128.

Further, the siphon tube 128 is provided with a conical guide 128a at the inlet opposite to the discharge port 122 shown in FIG. 2 for facilitating the supply of a fire extinguishing agent in which a foam aqueous solution and a high-pressure gas are mixed. ing. The inner and outer surfaces of the guide 128a shown in FIG. 2 have a conical shape, but at least the inner surface may have a conical shape.

In FIG. 2, the lever 130 is provided on the upper surface of the cap 120 so that when grasped by hand, the discharge hose 126 leading to the siphon tube 128 is opened, and when released, the discharge hose 126 is closed.

The cartridge 140 is connected to the mounting bracket 124 of the cap 120, and a gas such as air, nitrogen, or an inert gas such as carbon dioxide is stored inside in a compressed state. When the lever 130 is gripped, the cartridge 140 ejects a high-pressure gas into the container 110 (see the white arrow in FIG. 2) to increase the pressure inside the container 110. Due to the pressure at this time, the foam aqueous solution filled in the container 110 flows into the siphon tube 128 from the guide 128, passes through the orifice portion 152 of the foam generation portion 150, and is pushed out to the discharge port 122. Here, due to the pressure drop when the aqueous foam solution passes through the orifice portion 152 at high speed, the high-pressure gas ejected into the container 110 is sent to the high-pressure gas inflow port 154 (see FIG. 4) of the foam generating portion 150 described later. Inflow.

FIG. 4 is a cross-sectional view showing the bubble generation unit 150. In FIG. 4, the foam generator 150 is attached upright between the two siphon tubes 128. The foam generation unit 150 mixes the aqueous foam solution filled inside the container 110 with the pressurized gas of the cartridge 140 to form a uniform foam. The foam generating section 150 includes an orifice section 152 and a high pressure gas inflow port 154. The longitudinal direction of the foam generating portion 150 is preferably coaxial with the siphon tube 128.

The orifice portion 152 is formed through the inside of the foam generating portion 150 in the longitudinal direction, and the aqueous foam solution passing therethrough is ejected at high speed.

The high-pressure gas inflow port 154 is opened in the container 110 and is formed to penetrate the orifice portion 152 so as to be inclined at both opposite ends. The high-pressure gas inflow port 154 causes the high-pressure gas ejected from the cartridge 140 into the container 110 to flow into the orifice portion 152. As a result, uniform bubbles are formed in the aqueous foam solution passing through the orifice portion 152.

That is, the aqueous foam solution passes through the orifice portion 152 at high speed and reduces the pressure in the orifice portion 152. As a result, the high-pressure gas ejected from the cartridge 140 into the container 110 flows into the orifice portion 152 from the high-pressure gas inflow port 154. When the high-pressure gas flowing into the orifice portion 152 comes into contact with the aqueous foam solution, uniform bubbles are generated in the aqueous foam solution.

Here, the diameter d1 of the orifice portion 152 shown in FIG. 4 is preferably 3 to 4.5 mm, and the diameter d2 of the high-pressure gas inflow port 154 is preferably 1.5 to 3.0 mm.

On the other hand, FIGS. 5A to 5C are photographs showing the relationship between the diameter d2 of the high-pressure gas inflow port 154 and the foam density in the compressed gas foam fire extinguisher according to the first embodiment. When the diameter d1 of the orifice portion 152 is 4.0 mm, FIG. 5A shows a case where the diameter d2 of the high-pressure gas inflow port 154 is 1.5 mm. FIG. 5B shows a case where the diameter d2 of the high-pressure gas inflow port 154 is 2.0 mm. FIG. 5C shows a case where the diameter d2 of the high-pressure gas inflow port 154 is 3.0 mm. The relationship between each diameter d2 of the high-pressure gas inflow port 154 and the bubble density is as follows.

First, in FIGS. 5A to 5C, the larger the diameter d2 of the high-pressure gas inlet 154, the better the bubbles are generated, but there is no big difference under the condition of 3.0 mm or more, and the adhesive force is also 3.0 mm. It turns out that it is better under the condition of.

FIG. 6 is a graph showing the relationship between the diameter d2 (Hole size (mm)) of the high-pressure gas inflow port 154 and the expansion ratio (Expansion ratio) in the compressed gas foam fire extinguisher according to the first embodiment. .. As shown in FIG. 6, when the diameter d1 of the orifice portion 152 is 4.0 mm, the relationship between the diameter d2 of the high pressure gas inlet 154 and the expansion ratio is that the diameter d2 of the high pressure gas inlet 154 is 2.0 mm. The expansion ratio shows the maximum value in some cases and in the case of 3.0 mm.

Further, FIG. 7 shows the relationship between the diameter d2 (Hole size (mm)) of the high-pressure gas inlet and the radiation distance (Distance (m)) in the compressed gas foam fire extinguisher according to the first embodiment of the present invention. It is a graph which shows. As shown in FIG. 7, when the diameter d1 of the orifice portion 152 is 4.0 mm, the relationship between the diameter d2 of the high-pressure gas inlet 154 and the radiation distance is that the diameter d2 of the high-pressure gas inlet 154 is 1.5 mm. It can be seen that the radiation distance in one case exceeds 7 m, which is slightly longer than the radiation distance in the case of 2.0 mm and the case of 3.0 mm.

In the compressed gas foam fire extinguisher 100 according to the first embodiment of the present invention, when the user holds the lever 130 by hand when suppressing a fire, a high-pressure gas is ejected from the cartridge 140 into the container 110. As a result, the pressure inside the container 110 becomes high, and the aqueous foam solution filled in the container 110 flows from the guide 128 into the siphon tube 128 and passes through the orifice portion 152 of the foam generating portion 150 at high speed. As a result, the high-pressure gas ejected into the container 110 flows into the orifice portion 152 from the high-pressure gas inflow port 154. When a high-pressure gas, that is, air, an inert gas such as nitrogen or carbon dioxide, or the like comes into contact with the aqueous foam solution, a uniform foam is formed in the aqueous foam solution. After that, the uniform foam formed by the foam generation unit 150 is finally radiated from the nozzle 126a to the fire point via the discharge port 122 and the discharge hose 126.

<Second Embodiment of Compressed Gas Foam Fire Extinguisher>
Next, the configuration of the compressed gas foam fire extinguisher according to the second embodiment of the present invention will be described with reference to the attached FIG. FIG. 8 is a cross-sectional view showing a compressed gas foam fire extinguisher according to a second embodiment of the present invention.

In FIG. 8, the compressed gas foam fire extinguisher 200 according to the second embodiment of the present invention is an improvement over a pressurized fire extinguisher including a container 210, a cap 220, a lever 230, and a cartridge 240, and is a novel foam stock solution storage unit 250. There is a feature in. Since the container 210, the cap 220, the lever 230, and the cartridge 240 have the same structure and function as those of the first embodiment described above, detailed description thereof will be omitted. Similar to the first embodiment, the lever 230 is an activation device that radiates bubbles when grasped by hand.

The foam stock solution storage unit 250 is connected to the discharge port 222 of the cap 220 by the storage unit connecting pipe 254. The foam stock solution is stored inside the foam stock solution storage unit 250. Further, the bottom portion 252 of the foam stock solution storage portion 250 is configured to be detached by receiving pressure from the inside. On the other hand, water for mixing with the foam stock solution is stored inside the container 210.

In FIG. 8, reference numeral 224 is a mounting bracket, 226 is a discharge hose, 226a is a nozzle, and 228a is a conical guide for smoothly supplying water. The inner and outer surfaces of the guide 228a shown in FIG. 8 have a conical shape, but at least the inner surface may have a conical shape.

In the compressed gas foam fire extinguisher 200 according to the second embodiment of the present invention, when the user holds the lever 230 by hand when suppressing the fire, high pressure air, nitrogen or high pressure air, nitrogen or high pressure air, nitrogen or high pressure air, nitrogen or high pressure air, nitrogen or An inert gas such as carbon dioxide flows into the foam stock solution storage unit 250. Due to the pressure of this high-pressure gas, the bottom 252 of the foam stock solution storage portion 250 is released, and a foam aqueous solution in which the foam stock solution and water are mixed is formed in the container 210. When this aqueous foam solution comes into contact with the high-pressure gas that has flowed into the container 210 from the inside of the storage unit connecting pipe 254, a uniform foam is formed in the aqueous foam solution. The foam aqueous solution in which uniform bubbles are formed flows into the siphon tube 228 from the guide 228a due to the high pressure in the container 210, passes through the discharge port 222 and the discharge hose 226, and is finally radiated from the nozzle 226a to the fire point. ..

As described above, according to the compressed gas foam fire extinguisher 200 according to the second embodiment described above, a uniform foam is formed by providing the foam stock solution storage portion 250 opened by the pressure of a high-pressure gas in the container 210. This makes it possible to simplify the internal shape of the fire extinguisher.

<Third Embodiment of compressed gas foam fire extinguisher>
Next, the configuration of the compressed gas foam fire extinguisher according to the third embodiment of the present invention will be described with reference to the attached FIG. FIG. 9 is a cross-sectional view showing a compressed gas foam fire extinguisher according to a third embodiment of the present invention.

In FIG. 9, the compressed gas foam fire extinguisher 300 according to the third embodiment of the present invention is an improvement over the pressure-accumulation type fire extinguisher including the container 310, the cap 320, and the lever 330, and the cartridge and the foam stock solution storage portion are omitted. In that respect, it differs from the first and second embodiments described above. The compressed gas foam fire extinguisher 300 according to the third embodiment is filled with an inert gas (CO ₂ or N ₂ ) on the upper side and a mixture of water and a foam stock solution on the lower side with reference to the foam generation unit 350. It is configured to be filled with the foam aqueous solution. The foam generation unit 350 is provided with a high-pressure gas inlet and an orifice portion similar to those in the first embodiment (see FIG. 4). Here, as in the first and second embodiments, the lever 330 is an activation device that radiates bubbles when grasped by hand.

The filling pressure of the container 310 is preferably 7 to 9.8 bar (0.7 to 0.98 MPa) for compressing the inert gas. In FIG. 9, reference numeral 324 is a mounting bracket, and reference numeral 328a is a conical guide for smoothly supplying the fire extinguishing agent. The mounting bracket 324 is for mounting a cartridge. In this embodiment, since the cartridge is omitted, the mounting bracket 324 is not used.

In the compressed gas foam fire extinguisher 300 according to the third embodiment of the present invention, when the user holds the lever 330 by hand when suppressing the fire, the release valve provided between the siphon pipe 328 and the discharge hose 326 opens. Will be done. As a result, the aqueous foam solution below the foam generating portion 350 flows into the siphon tube 328 from the guide 328a and passes through the orifice portion of the foam generating portion 350 at high speed. As a result, the high-pressure inert gas above the foam generation unit 350 flows into the high-pressure gas inflow port of the foam generation unit 350. When the high-pressure inert gas comes into contact with the aqueous foam solution, uniform foam is formed in the aqueous foam solution. After that, the foam aqueous solution in which uniform bubbles are formed is finally radiated from the nozzle 326a to the fire point via the discharge port 322 and the discharge hose 326.

<Implementation of compressed gas foam fire extinguishing system>
Next, the configuration of the compressed gas foam fire extinguishing system according to the embodiment of the present invention will be described with reference to the attached FIG. FIG. 10 is a schematic view showing an embodiment of a compressed gas foam fire extinguisher system including the compressed gas foam fire extinguisher of the present invention. The compressed gas foam fire extinguishing system 400 of the present embodiment has a configuration that monitors kitchen equipment and automatically emits a foam aqueous solution in which uniform bubbles are formed in the event of a fire.

The compressed gas foam fire extinguishing system 400 is installed on the wall surface and ceiling of the kitchen shown in FIG. The compressed gas foam fire extinguisher system 400 includes the first and second fire detectors 411 and 412, the control unit 420, the starting device 430, and the compressed gas foam fire extinguisher 100 to 300 of the first to third embodiments described above. One of them, a pipe 450, a nozzle 460, and a manual start button 470 are included. The control unit 420 and the compressed gas foam fire extinguisher 100 to 300 are housed in a storage box installed on the wall surface of the kitchen. The compressed gas foam fire extinguisher 100 to 300 is provided with a valve 440 that is opened by the starter 430.

The first and second fire detectors 411 and 412 are installed above the gas table 500, which is a kitchen facility. The gas table 500 includes, for example, first and second stoves 501 and 502. The first fire detector 411 monitors the temperature around the first stove 501 and detects the occurrence of a fire. The second fire detector 412 monitors the temperature around the second stove 502 and detects the occurrence of a fire.

The control unit 420 is communicably connected to the first and second fire detectors 411 and 412, the activation device 430, and the manual activation button 470 by wire or wirelessly. The dotted line in FIG. 10 indicates the communication path of the signal transmitted and received by the control unit 420. The starting device 430 opens the valve 440 based on the signal from the control unit 420. One end of the pipe 450 is mechanically connected to the outlet of the valve 440. On the other hand, the other end of the pipe 450 is connected to the nozzle 460. The nozzle 460 is arranged above the gas table 500. Nozzle 460 has a radiation range that includes both the first and second stoves 501, 502.

Next, the operation of the compressed gas bubble fire extinguishing system 400 of the present embodiment will be described. When an abnormality that causes a fire occurs in either the first or second stove 501 or 502, the ambient temperature of the first or second stove 501 or 502 rises abnormally. Abnormal temperature rise is detected by at least one of the first and second fire detectors 411 and 412. The first or second fire detectors 411 and 412 transmit a signal to the control unit 420. When the control unit 420 receives the signal from the first or second fire detectors 411 and 412, the control unit 420 transmits the signal to the activation device 430. The activation device 430 operates by receiving a signal from the control unit 420 to open the valve 440 of the compressed gas foam fire extinguisher 100 to 300. As a result, the compressed gas foam fire extinguisher 100 to 300 brings the high-pressure gas into contact with the aqueous foam solution to form a uniform foam. The uniform foam formed by the compressed gas foam fire extinguisher 100-300 was then radiated from the valve 440 through the pipe 450 and finally from the nozzle 460, causing a fire on the first or second stove 501, 502. It is suppressed.

The compressed gas foam fire extinguishing system 400 of the present embodiment can also be manually activated by a person. When a person detects an abnormality in the first or second stove 501 or 502, the manual start button 470 may be pressed. The manual activation button 470 is installed at a height on the wall surface of the kitchen that is easy for humans to operate, and when pressed, a signal is transmitted to the control unit 420. As a result, the control unit 420 operates the activation device 430, and the uniform foam formed by the compressed gas foam fire extinguisher 100 to 300 is radiated from the nozzle 460 in the same manner as described above.

<Other corrections and changes>
As described above, the present invention has been described by the limited embodiments and drawings, but the present invention is not limited to the above embodiments and drawings, but is not limited to the above-described embodiments and drawings. Anyone who has such a description can make various modifications and modifications. For example, the configuration of the compressed gas foam fire extinguisher of the present invention can be applied to any container with a small capacity to a large capacity of 1 to 100 liters, and therefore the compressed gas foam fire extinguisher system is small to large scale. It can be realized in any of the above embodiments.

Therefore, the scope of the present invention should not be defined only in the described embodiments, but should be defined not only by the claims but also by the equivalent of the claims.

100, 200, 300 Compressed gas foam fire extinguisher 110, 210, 310 Containers 120, 220, 320 Caps 130, 230, 330 Lever 140, 240 Cartridges 150, 350 Foam generator 152 Orchid 154 High pressure gas inlet 250 Foam stock solution storage Part 400 Compressed gas foam fire extinguishing system 411, 412 1st and 2nd fire detector 420 Control part 430 Starter 440 Valve 450 Piping 460 Nozzle 470 Manual start button 500 Gas table 501, 502 1st and 2nd stove

Claims (10)

A component or structure provided in the siphon tube of a pressurized or accumulating foam fire extinguisher filled with an aqueous foam solution in a container.
An orifice portion formed through the foam aqueous solution flowing into the siphon tube in the longitudinal direction, and a high-pressure gas inflow port formed through the inlet opened in the container to communicate with the orifice portion. , Including
A foam generating unit that forms bubbles in the foam aqueous solution by bringing the gas flowing in from the high-pressure gas inlet into contact with the foam aqueous solution passing through the orifice portion. The foam generating portion according to claim 1, wherein the high-pressure gas inflow port is formed through so as to incline upward from the lower inlet. The foam generating portion according to claim 2, wherein the inclination angle of the high-pressure gas inflow port is 90 ° or more and 170 ° or less with respect to the central axis in the longitudinal direction of the orifice portion. The foam generating portion according to any one of claims 1 to 3, wherein the diameter d1 of the orifice portion is 3 to 4.5 mm, and the diameter d2 of the high pressure gas inlet is 1.5 to 3.0 mm. .. The foam generating unit according to any one of claims 1 to 4, which is a part detachably provided on the siphon tube. The container according to any one of claims 1 to 5, wherein the foam aqueous solution, the siphon tube, and a cartridge in which gas is stored in a compressed state are housed in the siphon tube. A compressed gas foam fire extinguisher provided with the foam generating unit. The foam aqueous solution, the siphon tube, and the inert gas as the gas are contained in the container, and the inert gas is compressed at a predetermined filling pressure, and the siphon tube is provided with claim 1. The foam generating unit according to any one of the items to 5 is provided.
A compressed gas foam fire extinguisher in which the inert gas is filled on the upper side and the foam aqueous solution is filled on the lower side with the foam generating portion as a reference. In a container filled with water,
A cartridge in which gas is stored in a compressed state,
The foam stock solution storage unit where the foam stock solution is stored and
A siphon tube into which a foam aqueous solution in which the water and the foam stock solution are mixed flows is accommodated.
A compressed gas foam fire extinguisher configured so that the gas flows into the inside of the foam stock solution storage unit from the cartridge, and the bottom portion of the foam stock solution storage unit is configured to be released by receiving pressure from the inside. .. The compressed gas foam fire extinguisher according to any one of claims 6 to 8, wherein a guide having at least a conical inner surface is provided at the lower end of the siphon tube. The compressed gas foam fire extinguisher according to any one of claims 6 to 9.
A valve provided in the compressed gas foam fire extinguisher and
The piping connected to the outlet of the valve and
With the nozzle connected to the pipe
A fire detector that detects the occurrence of a fire and
A control unit that transmits a signal based on the detection result of the fire detector,
An activation device that opens the valve based on a signal from the control unit, and
Including compressed gas foam fire extinguishing system.