JPH0515472B2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an automatic fire extinguisher.

(Prior art) Conventional automatic fire extinguishers have a cylindrical container for storing extinguishing agent, or a cylindrical container for storing extinguishing agent, or
Some fire extinguishing apparatuses, such as the one described in the above publication, have an inner circumferential wall that is annular as a whole.

(Problems to be solved by the invention) Conventional automatic fire extinguishers, at the time of initial extinguishing,
The pressure inside the fire extinguisher does not decrease and the extinguishing agent is injected very well, but from the middle to the second half, some of the compressed gas is released from the nozzle together with the extinguishing agent, and the pressure inside the extinguisher decreases. There was a defect in which the extinguishing agent was not completely extinguished because the extinguishing agent was not completely extinguished by tapering the jet of extinguishing agent.

This is because the fire extinguisher is cylindrical and has a flat bottom. When the extinguishing agent inside the fire extinguisher gradually decreases, pressure concentrates at the nozzle provided at the bottom, and compressed gas also leaks out. This is because you end up doing it.

Therefore, the present invention, unlike conventional automatic fire extinguishers,
The shape of the container containing the extinguishing agent is changed to a hollow sphere instead of a cylinder, and the purpose is to be able to spray without leaving any extinguishing agent during the entire injection process, from the beginning to the middle and from the middle to the end. This is what I did.

(Means for Solving the Problems) The present invention provides an automatic fire extinguisher having a container containing a fire extinguisher, an automatic fire extinguisher operating mechanism filled with a nonflammable fluid, and a fire extinguisher injection nozzle, the container comprising: is formed into a hollow sphere, a mounting plate is attached to the top of the sphere perpendicular to the center line, and a sealing injection nozzle is attached to the bottom opposite to the mounting plate via a membrane gasket communicating with the sphere. A fire extinguishing agent squirting cylinder is provided with a through hole on the outside of the sphere, and a bottomed seal sac that is ruptured by high pressure nonflammable fluid filled in the through hole is filled with high pressure nonflammable fluid. and the head of the cylinder is fitted and fixed to the cylinder through a set screw at the tip of the sleeve. A nonflammable fluid ejection passage is formed in the lower part of the cylinder, and the upper end of the seal sac is held between a cap that is integrally provided with the sphere and an end plate into which the sleeve is screwed, and a lock nut screwed into the cap is used. A plate receiving pin is hung over a frame plate fixed to the base together with the end plate, one end of the firing pin operating plate is locked to the pin, the other end is passed through the end plate, and a spring receiver is brought into contact with the lower part of the plate. , a compression coil spring is interposed between the spring receiver and the end plate, a fuse is inserted into the fuse receiver facing the plate receiver pin with one end of the plate in between, and the fuse is inserted into the frame plate through an adjustment screw. Press it through the supporting presser block, make the connecting rod protrude from the upper surface of the protective cover which is above the frame plate and is fixed integrally with the fuse receiver, and support the adjustment screw at the lower part of the connecting rod. A screw receiver is attached, one end of the finger hook is loosely fitted into the connecting rod, and the other end is removably engaged with the hook attached to the upper surface of the protective cover. This is a spherical automatic fire extinguisher characterized by having an automatic fire extinguisher operating mechanism inserted therein, with the head of the mechanism protruding and fitting onto the outer surface of the sphere.

(Example of Implementation) A is an automatic fire extinguisher and has the following configuration. 1 is a hollow sphere made of a metal plate constituting the automatic fire extinguisher a. The sphere 1 is usually formed by processing a stainless steel plate. 2 is a center line passing through the center point of the sphere 1; 3 is a flat mounting plate attached to a predetermined location on the outer surface 4 of the sphere 1, usually perpendicular to the center line 2; For installation, a cylindrical mounting auxiliary part 5 having a short width may be directly mounted at right angles to the center line 2, and the mounting plate 3 may be fixed via the mounting auxiliary part 5. Reference numeral 6 designates a fire extinguishing agent injection nozzle that is removably fitted into a through hole 7 formed in the outer surface 4 opposite to the outer surface 4 to which the mounting plate 3 is attached. The nozzle 6 has the following configuration. 8 is a threaded part of the nozzle 6 in which a mounting screw 9 is carved into a through hole 7 formed in the sphere 1;
is a holder constituting the nozzle 6, and the holder has a circular shape as a whole, and the entire surface has a small circular portion 12 in the center parallel to the flange portion 11, and an injection hole 13 is formed in the center. Then, the injection holes 13 and the flange 11 emit the injection holes 13 in an intersecting manner from the outer surface of the small circular portion 12 toward the flange 11 with respect to the small circular portion 12.
Four small circular portions 12' having the same shape are respectively formed between the two, and an injection hole 13' having the same shape is bored at the center of each small circular portion 12'. The small circular portion 12,
A swool plate 14 having a small hole 15 in the center and a plurality of vortex generating blades 16 is attached to the back surface of the spool plate 12', which are integrally fixed in different directions. 1
Reference numeral 7 denotes a membrane gasket, and 18 a fixing portion having a through hole 19 in the center, which is fitted onto the holder 10, and the membrane gasket 17 covers the through hole 19. The above is the configuration of the nozzle 6. Reference numeral 20 denotes a through hole 21 bored in the outer surface of the sphere 1 between the mounting plate 3 and the nozzle 6.
This is an automatic fire extinguisher operating mechanism that fits into the The fitting location of the actuating mechanism 20 is not limited as shown in the drawings. Next, the configuration of the operating mechanism 20 will be described. A fire extinguishing agent jetting cylinder 22 whose lower part is filled with a high-pressure nonflammable fluid is attached to a cylinder 24 that is fitted and fixed to the tip of a sleeve 23 via a set screw 25. stick. Cylinder 2 in cylinder 24
A plunger 27 equipped with a firing pin 26 that can pierce the sealing plate 2 (not shown) is slidably fitted to face the sealing plate 2 (not shown). A sexual fluid ejection passage 28 is formed. The cylinder 22 and the sleeve 23 are covered with a seal sac 29 that chemically protects against extinguishing agents, and the base end of this seal sac 29 connects to a cap 30 that is integrally provided on the sphere 1. The sleeve 23 is held between an end plate 31 and a screwed end plate 31. Base 3
The end plate 3 is secured by a lock nut 32 screwed into the end plate 3.
A plate receiving pin 34 is spanned over a frame plate 33 which is fixed to the base 30 together with the firing pin actuating plate 35, which has one end locked to the plate receiving pin 34 and extends through the end plate 31. The other end side is guided into the sleeve 23. A spring receiver 36 is in contact with the firing pin operating plate 35, and the expansion and contraction force of a compression coil spring 37 interposed between the spring receiver 36 and the end plate 31 causes the firing pin operating plate 35 to always move toward the plunger 27 side. It is in a pressed state. A fuse 39 with a low melting point (for example, around 70° C.) is inserted into the fuse receiver 38, which faces the plate receiver pin 34 with one end of the firing pin operating plate 35 in between.
is prevented from falling off from the fuse receiver 38 by a presser block 41 supported by the frame plate 33 via an adjustment screw 40. That is, the compression coil spring 3
7 and the action of the plate receiving pin 34, one end of the firing pin operating plate 35 is pressed against the fuse receiver 38 side, and the plate receiving pin 34 is pressed against the fuse receiver 38 side.
However, one end of the firing pin operating plate 35 is held pressed against the plate receiving pin 34 by the fuse 39, presser block 41, etc. However, when the outside temperature rises and the fuse 39 melts and begins to flow out from between the presser block 41 and the fuse receiver 38, the elastic force of the compression coil spring 37 overcomes and one end of the firing pin actuating plate 35 moves to the plate receiver pin. Out of 34.
The firing pin actuating plate 35 is connected to the plunger 27.
The firing pin 26 breaks through the sealing plate of the extinguishing agent jetting cylinder 22, and the nonflammable fluid overflows from the nonflammable fluid jetting passage 28, causing the seal sac 29 to rupture due to the pressure, and the inside of the sphere 1 to explode. of the fire extinguishing agent. 42 is fuse receiver 3
This is a protective cover that also serves as a heat exchanger plate integrated with 8. 4
3 is a screw receiver for supporting the adjustment screw 40, and 44 is a connecting rod that is connected to the screw receiver 43 and protrudes from the upper surface of the protective cover 42. A finger hook 45 is located on the upper surface of the protective cover 42, and has one end loosely fitted into the connecting rod 44 and the other end removably fitted into the hook 46 attached to the upper surface of the protective cover 42. Department. The shape of the hook portion 45 is not limited to that shown in the drawings. When the hook part 45 is manually hooked with a finger and pulled, the connecting rod 44 connected to the hook part 45 is pulled at the same time, the screw receiver 43 also pulls the adjustment screw 40, and the screw 40 is also pulled.
Presser block 41 and fuse 39 located at the tip of
is also removed from the fuse receiver 38. In this manner, at the same time as the fuse 39 is removed, the expansion and contraction force of the compression coil spring 37 is overcome, and one end of the firing pin operating plate 35 is removed from the plate receiver 35. Then, since the firing pin actuating plate 35 hits the plagiar 27, the firing pin 26 breaks through the sealing plate of the extinguishing agent jetting cylinder 22, and the nonflammable fluid overflows from the nonflammable fluid jetting passage 28, and the pressure causes the seal sac to close. 29 bursts, and the extinguishing agent inside the sphere 1 is blown out.

(Function) To explain the function of the present invention, the sphere of the present invention is constructed by filling the sphere 1 with a fire extinguishant, and fitting the injection nozzle 6 and the automatic fire extinguisher operating mechanism 20 into the sphere 1. A type automatic fire extinguisher is fixed to the ceiling wall surface of the room via a mounting plate 3 with a peg or the like.

In the unlikely event that a fire occurs due to the installation as described above,
When the air at the installation location reaches the melting point of the fuse 39, the fuse 39 flows out, and the components constituting the automatic fire extinguisher operating mechanism 20 described above operate to convert the nonflammable fluid filling into the cylinder 22 into a nonflammable fluid. The extinguishing agent overflows from the ejection passage 28, ruptures the seal sac 29 due to its pressure, and blows out into the extinguishing agent inside the sphere 1, causing each injection hole 1 forming the nozzle 6 to explode.
Fire extinguishing agent is injected from 3 and 13'.

Unlike conventional fire extinguishers, the present invention uses a hollow sphere 1 instead of a cylindrical body, so that the extinguishing agent flows smoothly along the inner surface of the sphere, and the injection hole of the nozzle 6 is Even if the pressure of the nonflammable fluid is intensively applied to 13, 13', the nonflammable fluid will not leak out until the extinguishing agent is exhausted. Therefore, there is no residual extinguishing agent at all. Note that the injection pressure relationship when the nonflammable fluid in the cylinder 22 is injected to pressurize the liquid level of the extinguishing agent and is injected from the injection holes 13, 13 of the nozzle 6 is expressed as follows.

Injection pressure = Sphere projected area / Nozzle injection projected area x Gas cylinder pressure (effect) The present invention is as described above, and in particular, unlike conventional fire extinguishers, the part corresponding to the cylinder is made into a hollow sphere. Then, the pressure of the nonflammable fluid injected from the cylinder is applied to the liquid level (projected area) of the extinguishing agent, and the pressurizing force of the liquid level passing through the center reaches its maximum value, and even as it gradually descends from the center toward the nozzle. , the liquid level of the extinguishing agent does not decrease rapidly, but gradually decreases, so that no extreme depressurization phenomenon occurs; It flows smoothly, and the injection pressure does not concentrate on the injection hole of the nozzle, causing a dispersion phenomenon, which prevents the pressure of the nonflammable fluid from unilaterally escaping while the extinguishing agent remains. Therefore, while the extinguishing agent remains, the pressure of the above-mentioned fluid constantly pressurizes the liquid level, so the injection force of the extinguishing agent is uniform from the beginning to the final injection, and the extinguishing agent is extinguished. It also has the advantage of being able to completely extinguish a fire by spraying the extinguishing agent without leaving any of the extinguishing agent in it, with almost no change in force.

[Brief explanation of the drawing]

Fig. 1 is a half-cut longitudinal sectional view of the spherical automatic fire extinguisher of the present invention, Fig. 2 is a bottom view of the fire extinguisher, Fig. 3 is a front view of the nozzle fitted to the fire extinguisher, and Fig. 4 is the same. A longitudinal cross-sectional view of the nozzle, Fig. 5 is a plan view of the swool plate installed in the nozzle, Fig. 6 is a longitudinal cross-sectional view of the same plate, and Fig. 7 shows the injection of extinguishing agent from the injection hole of the nozzle. FIG. 8 is a diagram showing the injection range of the extinguishing agent injected from the injection hole in FIG. 7, FIG. 9 is a longitudinal sectional view of the automatic fire extinguisher operating mechanism attached to the same fire extinguisher, and FIG. 10 is a diagram showing the angle. is a partially cutaway enlarged slope view of the same main part. a... Automatic fire extinguisher, 1... Sphere, 2... Center line, 3...
Mounting plate, 4... Outer surface, 5... Mounting auxiliary part, 6...
Injection nozzle, 7... Through hole, 8... Threaded part, 9... Screw, 10... Holder, 11... Flange part, 12, 12'...
Small circular part, 13, 13'... Injection hole, 14... Swool plate, 15... Small hole, 16... Whirlpool generation wing part, 17
...Membrane packing, 18...Fixing part, 19...Through hole, 2
0...Automatic fire extinguisher operating mechanism, 21...Through hole, 22
...Cylinder, 23...Sleeve, 24...Cylinder,
25... Set screw, 26... Firing pin, 27... Plunger, 28... Injection passage, 29... Seal sac, 30
...Base, 31...End plate, 32...Rockite, 33
... Frame plate, 34... Plate receiving pin, 35... Firing pin operating plate, 36... Spring receiver, 37... Compression coil spring, 38... Fuse receiver, 39... Fuse, 4
0...adjustment screw, 41...presser block, 42...protective cover, 43...screw receiver, 44...connection rod, 45...
Finger hook.

Claims (1)

[Scope of Claims] 1. An automatic fire extinguisher having a container containing a fire extinguisher, an automatic fire extinguisher operating mechanism filled with a nonflammable fluid, and a fire extinguisher injection nozzle, wherein the container is formed into a hollow sphere. A mounting plate is attached to the top of the sphere perpendicular to the center line, and a seal injection nozzle is screwed to the bottom opposite to the attachment plate via a membrane gasket that communicates with the sphere. A through hole is provided on the outside of the sphere, and a fire extinguishing agent injection cylinder filled with high pressure nonflammable fluid is inserted into the through hole, and a bottomed seal sac that ruptures with high pressure nonflammable fluid is inserted into the through hole. The head is fixed to the cylinder which is fitted and fixed to the tip of the sleeve via a set screw, and a plunger equipped with a firing pin that faces the sealing plate of the cylinder and penetrates through the sealing plate is fitted into the cylinder. A nonflammable fluid ejection passage is formed in the lower part, and the upper end of the seal sac is clamped between a cap integrally provided on the sphere and an end plate into which a sleeve is screwed, and is fixed to the cap together with the end plate by a lock nut screwed into the cap. A plate receiving pin is hung over the frame plate, one end of the firing pin operating plate is locked to the pin, the other end is passed through the end plate, a spring receiver is brought into contact with the lower part of the plate, and the spring receiver and the end plate are connected. A compression coil spring is interposed between them, and a fuse is inserted into a fuse receiver facing the plate receiving pin with one end of the plate interposed therebetween. A connecting rod is pushed out onto the upper surface of the protective cover which is pressed in place above the frame plate and is fixed integrally with the fuse receiver, and a screw receiver for supporting the adjustment screw is attached to the lower part of the connecting rod. An automatic fire extinguisher operating mechanism is provided, in which one end of the finger hook is loosely fitted into the connecting rod, and the other end is removably engaged with a hook attached to the upper surface of the protective cover. Insert
A spherical automatic fire extinguisher characterized in that the head of the mechanism protrudes from and fits into the outer surface of the sphere.