JP2003190318A - Two-fluid sprayer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light weight and small, two-fluid sprayer which carries out fire extinguishing work quickly and accurately by facilitating operations. <P>SOLUTION: The two-fluid sprayer 1 is provided with a gas-liquid mixing part 2 having a gas introduction tube 9 and a liquid introduction tube 10, an injection part 3 connected to the tip part of the gas/liquid mixing part to inject air (gases) and water (liquid) mixed by the gas/liquid mixing part 2 as misty water, gas piping 4 and liquid piping 5 both rigid respectively connected to the gas introduction tube 9 and the liquid introduction tube 10 of the gas/liquid mixing part 2 and bent downward in the course thereof and open/close valves 6 and 7 which are installed on the respective piping 4 and 5 and operated simultaneously with an operation lever 11 to open or close ducts of the piping 4 and 5. The respective piping 4 and 5 are connected to the gas hose and the liquid hose from the gas supply source and the liquid supply source through pipe joints 11 and 12 and the open/close valves 6 and 7 are opened simultaneously by operating the operation lever 11 to inject the misty water to flames from the injection part 3 thereby extinguishing fires. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-fluid spraying device for use in a two-fluid fire extinguisher, which mixes liquid and gas pumped from a liquid supply source and a gas supply source and jets them as mist-like water. It is a thing.

[0002]

2. Description of the Related Art As a two-fluid fire extinguishing apparatus for extinguishing a fire by spraying a liquid and a gas simultaneously to a two-fluid nozzle to spray a mist-like liquid and spraying this mist-like liquid to a fire source at a fire site. The applicant of the present application has already proposed what is shown in Japanese Patent Application No. 10-270829. This two-fluid fire extinguisher 100 is
Compressor 101, pump 102, two-fluid nozzle 103, hoses 104 and 105, double hose 10
6 and the air is compressed by the compressor 101, and the two fluid nozzle 1 is passed through the hose 104 and the double hose 106.
Hose 10 by pumping water stored in a water storage tank 107 such as a fire extinguishing water tank with a pump 102.
5. Pressure is sent to the two-fluid nozzle 103 through the double hose 106, the pressurized water and the compressed air are mixed by the two-fluid nozzle 103, and atomized water 109 is sprayed from the spray port 108 to the flame of the fire source to extinguish the fire. It is like this. According to the two-fluid fire extinguishing apparatus 100, compared to an apparatus that extinguishes fire using only water, mist-like water is jetted out vigorously from the two-fluid nozzle to reach a remote fire source and a small amount of water is used. Since the temperature drop of the flame and the blowout action by the air injection from the two-fluid nozzle 103 are effectively performed, it is possible to save water, reduce water loss as much as possible, and quickly extinguish the fire.

[0003]

However, the two-fluid nozzle 103 of the two-fluid fire extinguisher 100 has basic components for mixing two fluids and injecting a mist-like liquid to a fire source. When extinguishing a fire, it is easy for firefighters to operate, and it does not have a specific configuration for performing the fire extinguishing work quickly and accurately.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a two-fluid spraying device which is lightweight, small in size, can be easily operated, and can perform fire extinguishing work quickly and accurately. To aim.

[0005]

The present invention is characterized by the following points in order to solve the above problems. That is,
The two-fluid spraying device according to claim 1 has a gas-liquid mixing part that has a gas introduction pipe and a liquid introduction pipe, and mixes a gas and a liquid introduced from these introduction pipes, and a tip part of the gas-liquid mixing part. In a two-fluid spraying device including a connected gas and a jetting part for jetting a liquid mixed as a mist in the gas-liquid mixing part,
Rigid pipes are connected to the gas introduction pipe and the liquid introduction pipe, respectively, and each of the pipes is provided with an on-off valve that is simultaneously operated by an operation lever to open and close the pipeline of each pipe. It has a feature.

A two-fluid spraying device according to a second aspect of the present invention is the device according to the first aspect, wherein each of the pipes is bent downward at an obtuse angle, and the tip pipe on the downstream side and the upstream side of the bent portion. It is characterized by consisting of a proximal tube.

A two-fluid spraying device according to a third aspect of the present invention is the device according to the second aspect, wherein the on-off valve is provided at a position close to the bent portion of the tip end pipe of each pipe.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A two-fluid spraying device according to an embodiment of the present invention will be described below with reference to FIGS. 1 and 2 show a two-fluid spraying device 1 according to an embodiment of the present invention. The two-fluid spraying device 1 includes a gas-liquid mixing unit 2 that mixes air (gas) and water (liquid), and an ejection unit that ejects the air and water mixed in the gas-liquid mixing unit 2 as atomized water. Three
And a gas pipe 4 and a liquid pipe 5 having rigidity for supplying gas and liquid to the gas-liquid mixing section 2, and open / close valves 6 and 7 for opening and closing the pipe lines of these pipes 4 and 5, respectively. .

The gas-liquid mixing section 2 has a cylindrical mixing section body 8 having a tapered portion 8a on the tip side (downstream side),
A closed end portion 8b on the base end side (upstream side) of the mixing portion main body 8 is disposed inside the mixing portion main body 8 coaxially with the mixing portion main body 8.
And a liquid introducing pipe 10 fixed to the lower portion of the mixing portion main body 8 and opened inside the mixing portion main body 8. The jet part 3 is formed of a cylindrical member having a taper part 3a having a tapered tip end, and a base end part thereof is connected to a tip part of the taper part 8a of the gas-liquid mixing part 2 by a screw or the like.

Further, the gas introducing pipe 9 is made of a cylindrical member having a tapered tapered cylinder portion 9a at the tip end thereof opened near the tapered portion 8a of the mixing portion main body 8, and the closed end portion of the mixing portion main body 8 is formed. The tip end (downstream end) of the gas pipe 4 is connected to the base end protruding outward from 8b. The liquid introducing pipe 10 is made of a cylindrical member bent in an L shape, and the tip side is fixed to the outer peripheral portion of the mixing portion main body 8 so that the opening 1 at the tip is formed.
0a is communicated with the inside of the mixing portion main body 8, and the tip end (downstream end) of the liquid pipe 5 is connected to the base end.

As shown in FIG. 1, the gas pipe 4 and the liquid pipe 5 are substantially parallel to each other with the gas pipe 4 on the top and the liquid pipe 5 on the bottom. Then, the base end side (upstream side) of each of the bent portions 4a and 5a is made into an inclined pipe portion (base end pipe) 4b and 5b, and each of the bent portions 4 is formed.
a, 5a from the tip side (downstream side) connected to the gas-liquid mixing section 2
Are horizontal tube portions (tip tubes) 4c and 5c. Then, the base end portions (upstream end portions) of the inclined tube portions 4b and 5b.
In addition, the pipe joints 11 and 12 which can be attached / detached to / from the gas hose and the liquid hose connected to the gas supply source and the liquid supply source with one touch.
Are attached to the respective horizontal pipe portions 4c, 5c at positions close to the bent portions 4a, 5a.
7 are provided respectively. It should be noted that the bent portions 4a and 5a are provided with inclined pipe portions 4b and
The angle formed by 5b and the horizontal pipe portions 4c, 4c is 90 ° or more,
It is preferably around 135 °, and the convex side has an obtuse angle.

The on-off valves 6 and 7 are ball valves, butterfly valves, etc., and valve shafts 6b and 7b protruding outward from the valve boxes 6a and 7a so as to face each other.
Operation fittings 13a and 13b are attached to the operation fittings, and one operation lever 13 is fixedly provided on the operation fittings 13a and 13b. The operation lever 13 is manually operated between the closed position a and the open position b by an arrow. When it is rotated in the horizontal direction indicated by B (see FIG. 2), the pipelines of the gas pipe 4 and the liquid pipe 5 are simultaneously opened and closed. A stopper (not shown) for stopping the operation lever 13 at the closed position a and the open position b is provided between the operation lever 13 and one of the on-off valve 6 and the on-off valve 7, and the operation lever 13 is provided. A biasing means (not shown) such as a spring for constantly biasing 13 toward the closed position a with a weak force is provided.

The inclined pipe portion 5b of the liquid pipe 5 is bent so as to come into contact with the inclined pipe portion 4b of the gas pipe 4 and is provided with a recess 5d so that the two-fluid spraying device 1 can be appropriately grasped with one hand. Is being done. In addition, the two-fluid spraying device 1 is made of synthetic resin or rubber that surrounds the gas-liquid mixing section 2, the gas pipe 4, and the liquid pipe 5 so as not to hinder the operation of the operation lever 13 as necessary. A cover C such as the above can be provided.

When a fire is extinguished by using the two-fluid spraying device 1 having the above-mentioned configuration in a two-fluid fire extinguisher, for example, as shown in FIG. 3, a backpack type air cylinder (gas supply source) is used.
The liquid hose 1 provided along the gas hose 14a while the tip of the gas hose 14a connected to the gas pipe 14 is connected to the inclined pipe portion 4b of the gas pipe 4 via the pipe joint 11.
The tip of 5a is connected to the inclined pipe portion 5b of the liquid pipe 5 by a pipe joint 1
2, and the base end of the liquid hose 15a is further connected to a water supply source (liquid supply source) 15 such as a connecting water pipe, an indoor fire hydrant, and a water pipe of a fire engine and extended to the air cylinder 14. To the extended liquid hose 15b.

Air and water are supplied to the two-fluid spraying device 1 from the air cylinder 14 and the water supply source 15, and the horizontal pipe portions 4c, 5 of the gas pipe 4 and the liquid pipe 5 are set.
After holding c with one hand and holding the inclined pipe portions 4b and 5b of the pipes 4 and 5 with the other hand and directing the jet part 3 to the fire origin, operate the on-off valves 6 and 7 with one hand. The lever 13 is rotated from the closed position a to the open position b. As a result, the pipelines of the gas pipe 4 and the liquid pipe 5 are simultaneously opened, and the air and water are mixed in the gas-liquid mixing section 2 to instantly become mist-like water, which is vigorously injected into the fire source to cause a fire. Is extinguished.

According to the two-fluid spraying device 1 according to the above-mentioned embodiment, the on-off valves 6 and 7 provided in the middle of the gas pipe 4 and the liquid pipe 5 are simultaneously opened so that the gas-liquid mixing section 2 mixes them. It is possible to instantly form mist-like water, which is effective for extinguishing a fire, by jetting the air and water by the jetting unit 3 and jetting them vigorously.

Further, since the gas pipe 4 and the liquid pipe 5 which are connected to the gas-liquid mixing section 2 and which are provided to extend upstream from the gas pipe 4 and the liquid pipe 5 are parallel and bent downward, these pipes 4 and 4 are connected. 5 has an appropriate thickness that can be easily grasped with one hand like a water spray gun, so that the two-fluid spraying device 1 can be reliably supported and is easy to operate, and the middle of each pipe 4, 5 is bent downward. As a result, even if the gas hose and the liquid hose connected to the pipes 4 and 5 hang down, the sloping pipe portions 4b and 5b of the pipes 4 and 5 naturally allow the hang down (the hose 14a). , 15a, the inclination of the inclined pipe portion 4b can be made substantially equal to the tangential direction of the tip end portion thereof, so that the two-fluid fire extinguisher 1 can be easily supported by hand and freely operated according to a fire situation. .

In the two-fluid spraying device 1,
Horizontal pipe part 4 near the bent parts 4a, 5a of each pipe 4, 5
Since the open / close valves 6.7 are provided on the c and 5c respectively, the open / close valves 6 and 7 are supported by one hand supporting the horizontal pipe portions 4c and 5c.
Is preferable because the operation lever 13 can be easily operated, but the positions where the on-off valves 6 and 7 are provided are not limited to the above, and the pipes 4 and
The inclined pipe portions 4c and 5c of 5 may be provided near the pipe joints 11 and 12.

The two-fluid spray device 1 can be used not only in the two-fluid fire extinguisher F shown in FIG. 3 but also in other two-fluid fire extinguishers. For example, as shown in FIG. 4, in the two-fluid fire extinguisher F1 having an air cylinder 14A (gas supply source) mounted on a movable carriage 16 and an extension liquid hose 15b connectable to the water supply source 15, Two-fluid spraying device 1 via gas hose 14a and liquid hose 15a
May be used by connecting, and as shown in FIG.
A two-fluid fire extinguisher F2 of a type in which a movable carriage 16 is provided with an air cylinder 14A and a water tank (liquid supply source) 17 and the water in the water tank 17 is pushed out by the air in the air cylinder 14A.
In addition, the two-fluid spraying device 1 may be used by connecting it via the gas hose 14a and the liquid hose 15a.

Further, as shown in FIG. 6, the portable frame body 18
In the two-fluid fire extinguisher F3, which is equipped with a water tank 19, a compressor 20, a pump 21 and the like, and has an extension gas hose 14b and an extension liquid hose 15b connected to the compressor 20 and the pump 21, the gas hose 14a and the liquid The two-fluid spraying device 1 may be connected and used via the hose 15a, and as shown in FIG. 7, an indoor fire hydrant (liquid supply source) 23 incorporating an air cylinder (gas supply source) 22.
And extended gas hose 14b and extended liquid hose 15b
A two-fluid fire extinguisher F4 including
The two-fluid spraying device 1 may be connected and used via a and the liquid hose 15a.

Further, as shown in FIG. 8, a package type indoor fire hydrant incorporating a water tank (liquid supply source) 24, an air cylinder (gas supply source) 25, and a pressurizing gas cylinder 26 for pushing out the water in the water tank 24. And a two-fluid fire extinguisher F5 having an extension gas hose 14b and an extension liquid hose 15b which are connected to the water tank 24 and the air tank 25 via an opening / closing valve 27, and the gas hose 14a and the liquid hose 15a The two-fluid spraying device 1 may be connected and used. In any case, as in the case of using the two-fluid fire extinguisher F to extinguish a fire, mist-like water is accurately jetted from the spraying part 3a of the two-fluid spraying device 1 to quickly extinguish the flame at the origin of the fire. can do.

The case where the two-fluid spraying device 1 according to the above-described embodiment is used in a two-fluid fire extinguisher which uses compressed air as gas and water as liquid, has been described, but the present invention is not limited to these. Depending on the fire extinguishing target and the situation at the fire site, carbon dioxide gas, nitrogen gas, or other noncombustible gas is used as the gas, or a wetting agent as the liquid, or an aqueous solution mixed with a chemical liquid such as a strengthening liquid to enhance the fire extinguishing effect is used. It can be used in a two-fluid fire extinguisher.

[0023]

As described above, the present invention has the following excellent effects. According to the two-fluid spraying device of claim 1, a gas-liquid mixing section which has a gas introducing pipe and a liquid introducing pipe and mixes a gas and a liquid introduced from these introducing pipes, and a tip of the gas-liquid mixing unit. In a two-fluid spraying device, which is connected to a portion and has a jetting portion that jets the gas mixed with the gas-liquid mixing portion and the liquid as a mist-like liquid, the gas introducing pipe and the liquid introducing pipe each have rigid pipes. Since the connected pipes are each provided with an on-off valve that is simultaneously operated by the operation lever to open and close the pipe line of each pipe, the two-fluid spraying device can be reliably supported by hand and operated. Fire extinguishing work can be performed quickly and accurately.

According to the two-fluid spraying device of the second aspect,
Since each pipe is bent downward at an obtuse angle and consists of a tip pipe on the downstream side and a base pipe on the upstream side of this bent portion, a gas hose and a liquid hose connected to the two-fluid spraying device. Even if the pendant hangs down, the hang down can be reasonably allowed by the inclination of the base end pipe of each of the pipes, and the two-fluid fire extinguisher can be easily supported by hand and freely operated according to the fire situation. .

According to the two-fluid spraying device of the third aspect,
Since the on-off valve is provided at a position close to the bent portion of the tip tube of each pipe, the operation lever is operated via one hand supporting the tip tube while the two-fluid spraying device is supported by one hand. As a result, the on-off valve can be easily opened and closed, and the operability is good.

[Brief description of drawings]

FIG. 1 is a cross-sectional side view showing a part of an embodiment of a two-fluid spraying device according to the present invention.

FIG. 2 is a plan view showing an embodiment of a two-fluid spraying device according to the present invention.

FIG. 3 is a perspective view showing a first example of a two-fluid fire extinguisher using the two-fluid spraying device according to the present invention.

FIG. 4 is a perspective view showing a second example of the same.

FIG. 5 is a perspective view showing a third example of the same.

FIG. 6 is a perspective view showing a fourth example of the same.

FIG. 7 is a front view showing a fifth example of the same.

FIG. 8 is a front view showing a sixth example of the same.

FIG. 9 is a system diagram showing a two-fluid fire extinguisher using a conventional two-fluid spraying device.

[Explanation of symbols]

1 Two-fluid atomizer 2 Gas-liquid mixing section 3 spout 4 Gas piping (piping) 4a, 5a Bent section 4b, 5b Inclined pipe part (base end pipe) 4c, 5c Horizontal pipe part (tip pipe) 5 Liquid piping (piping) 6,7 open / close valve 8 Mixing unit body 9 Gas introduction tube 10 Liquid introduction tube 11,12 Pipe fitting 13 Operation lever

   ─────────────────────────────────────────────────── ─── Continued front page    (71) Applicant 502001569             Honsho Masayasu             4-5-7- Sagamiono, Sagamihara City, Kanagawa Prefecture             308 (72) Inventor Masashi Miyasaka             12 Nishiki-cho, Naka-ku, Yokohama-shi, Kanagawa Mitsubishi Heavy Industries             Yokohama Co., Ltd. (72) Inventor Seiji Okubo             1-8 Koura, Kanazawa-ku, Yokohama-shi, Kanagawa               Mitsubishi Heavy Industries Yokohama Research Center (72) Inventor Shintaro Noguchi             1-8 Koura, Kanazawa-ku, Yokohama-shi, Kanagawa               Mitsubishi Heavy Industries Yokohama Research Center (72) Inventor Yukio Ando             492-1 Soyado-cho, Kohoku-ku, Yokohama-shi, Kanagawa             Kikuna Sky Mansion A607 (72) Inventor Masayuki Hoshikawa             5-29-12 Kobuchi, Sagamihara City, Kanagawa Prefecture (72) Inventor Honjo Masayasu             4-5-7- Sagamiono, Sagamihara City, Kanagawa Prefecture             308 F-term (reference) 2E189 BA04 BB08 KB04                 4F033 QA10 QB02Y QB03X QB12Y                       QB15X QD04 QD15 QE19                       QE21

Claims (3)

[Claims] 1. A gas-liquid mixing section which has a gas introduction tube and a liquid introduction tube and mixes a gas and a liquid introduced from these introduction tubes, and a gas-liquid mixing section connected to the tip of the gas-liquid mixing section. In a two-fluid spraying device including a jetting unit that jets the mixed gas and liquid as a mist-like liquid, pipes having rigidity are connected to the gas introduction pipe and the liquid introduction pipe, respectively. The two-fluid spraying device is provided with an on-off valve which is operated by the operation lever at the same time to open and close the pipeline of each pipe. 2. The pipe is bent downward at an obtuse angle in the middle, and is composed of a tip pipe on the downstream side and a base pipe on the upstream side of the bent portion. A two-fluid spraying device as described. 3. The two-fluid spraying device according to claim 2, wherein the on-off valve is provided at a position close to the bent portion of the tip pipe of each of the pipes.