JP2003102861A - Automatic fire extinguisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve quick and effective fire extinguishment by sufficient diffusion of fire extinguishing agents while speeding up response during the fires. SOLUTION: The automatic fire extinguisher 10 is provided with a breaking means 14 for applying impacts to tear up a fire extinguishing agent container 12 housing the fire extinguishing agent 13. The breaking means 14 is provided with a fixed plate 19 fixed at the central part on the side of the fire extinguishing agent container 12 on the bottom wall 11a of a holder 11, a guide member 22 suspended on the side of the fire extinguishing agent container 12 of the fixed plate 19, a movable plate 21 arranged on the outer circumferential surface on the side 22a of the base end part of the guide member 22, an elastic body 20 interposed between the fixed plate 19 and the movable plate 21 and the breaking member 23 fastened on the outer circumferential surface of the tip part of the guide member 22 with a heat sensitive material 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic fire extinguishing apparatus which ejects a fire extinguishing agent in response to a rise in temperature when a fire occurs.

[0002]

2. Description of the Related Art In recent years, an automatic fire extinguishing device that automatically ejects a fire extinguishing agent solution in response to an increase in the ambient temperature in a room at the time of a fire is attached to a ceiling or a wall surface of a house,
The damage is prevented from spreading.

Such an automatic fire extinguisher 1 is usually shown in FIG.
As shown in, a glass ampoule 2 and a fire extinguishing agent 3 such as an ammonium carbonate solution or a sodium carbonate solution enclosed in the glass ampoule 2 are provided, and the fire extinguishing agent 3 heats the inner pressure of the glass ampoule 2 by heating. It is possible to rise.

When the fire extinguishing agent 3 is heated due to the rise in the ambient temperature at the time of a fire, the internal pressure of the glass ampoule 2 rises, whereby the outer wall of the glass ampoule 2 is destroyed and the fire extinguishing agent 3 is ejected. It is designed to extinguish a fire.

[0005]

However, in order to destroy the outer wall of the glass ampoule 2 by increasing the internal pressure, the entire extinguishing agent 3 must be uniformly overheated, so that there is a slight time interval between the occurrence of the fire and the extinction. Occurs. Therefore, the responsiveness to the fire becomes insufficient, which may increase the damage in the fire.

Therefore, as shown in FIG. 7, a leaf spring 5 for urging the glass ampoule 2 is attached to a U-shaped holder 4 for holding both ends of the glass ampoule 2 in which the fire extinguishing agent 3 is enclosed.
One end of the leaf spring 5 is fixed to the inner surface of the holder 4 via a support member 6 having a triangular cross section, while the other end is surrounded by the fusible metal material 7 to the inner circumference of the holder 4. An automatic fire extinguishing device 8 locked on the surface has been proposed.

This automatic fire extinguisher 8 is disclosed in Japanese Patent Application No. 2000-2.
No. 83598, the fusible metal 7 is melted by the temperature rise at the time of a fire, the other end of the leaf spring 5 is released, and the other end of the leaf spring 5 is collided with the outer wall of the glass ampoule 2 and destroyed. However, since the leaf spring 5 collides with one end as a fulcrum, the other end does not collide vertically, and the impact at the time of collision is biased toward the one end of the glass ampoule 2. . Therefore, the outer wall on the other end side of the glass ampoule 2 remains cracked, and as a result, the fire extinguishing agent 3 is not sufficiently diffused,
Extinguishing may be insufficient.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been devised in view of the above-mentioned conventional circumstances. The invention according to claim 1 is a fire extinguishing agent container having a fire extinguishing agent enclosed therein, and the extinguishing agent container. In the automatic fire extinguisher equipped with a destroying means for destroying the outer wall of the fire extinguisher, the destroying means is a temperature sensitive material which reacts when an ambient temperature around the fire extinguishing agent container rises to a predetermined temperature or higher, and the temperature sensitive material. And a guide member for guiding the destruction member in a direction perpendicular to the outer wall of the fire extinguishing agent container when the fire extinguishing agent container collides with the outer wall of the fire extinguishing agent container to destroy.

Therefore, when the ambient temperature around the temperature-sensing body rises to a predetermined temperature when a fire occurs, the destruction member is guided by the guide member and vertically collides with the outer wall of the fire-extinguishing chemical container to extinguish the fire. The outer wall of the drug container is broken evenly.

According to a second aspect of the present invention, the fire extinguishing agent container is held by a U-shaped holder, while the temperature sensitive material is composed of a fusible metal material, and the guide member is provided. , Vertically extending to the central portion of the bottom wall of the holder on the side of the fire-extinguishing agent container, the destruction member is fixed to the guide member by the fusible metal material, and when the fusible metal material is melted, the destruction is performed. It is characterized in that the member is ejected vertically toward the outer wall of the fire extinguishing agent container while being guided by the guide member.

The fusible alloy of the present invention (easily fusible alloy) is a low melting point ternary eutectic alloy, preferably having a melting point of about 75 degrees, and when the fusible alloy starts to melt in the event of a fire, a destructible member. Since the adhered state is released, the destruction member is vertically ejected toward the outer wall of the fire extinguishing agent container while being guided by the guide member. Therefore, the destruction member vertically collides with the central portion of the outer wall of the fire extinguishing agent container, and the outer wall of the fire extinguishing agent container is destroyed by this impact.

According to a third aspect of the present invention, a U-shaped plate is movably provided on the holder side of the guide member so that both side pieces face the fire extinguishing agent container side, while the guide is provided. The destruction member is fixed to the outer wall side of the fire extinguishing agent container of the member by the fusible metal material, and an elastic body is interposed between the bottom wall of the holder and the bottom wall of the plate. By the reaction force, the tip ends of both side pieces of the destruction member and the plate are ejected vertically toward the outer wall direction of the fire extinguishing agent container.

According to the present invention, the destruction member vertically collides with the central portion of the outer wall of the fire extinguishing agent container, and at the same time, the tips of both side plates of the plate vertically collide with both end portions of the outer wall of the extinguishing agent container. Therefore, both ends of the outer wall of the fire extinguishing agent container are destroyed even by the latter collision impact.

The invention according to claim 4 is characterized in that the end portions of both side pieces of the plate are formed in a tooth shape.

According to the present invention, since the front end portions of the both side walls of the plate are formed in a tooth shape, the destructive force against the outer wall of the fire extinguishing agent container is improved.

According to a fifth aspect of the present invention, the guide member and the breaking member are made of a material having a higher thermal conductivity than at least the plate, and a predetermined gap is provided between the breaking member and the plate. It is characterized by the provision of.

According to the present invention, since the guide member and the breaking member are made of a material having a higher thermal conductivity than the plate, heat exchange between the guide member and the breaking member and the plate is suppressed. In particular, since the predetermined distance is provided between the destruction member and the plate, heat exchange between the destruction member and the plate is further suppressed, whereby the fusible metal easily reaches its melting point early in the event of a fire.

According to a sixth aspect of the present invention, the fire extinguishing agent container has locking portions having inner diameters smaller than those of the central portion on both end sides, while the locking portions are provided on both side walls of the holder. It is characterized in that an engaging hole portion for engaging and holding is provided.

According to this invention, since the engaging portion of the fire extinguishing agent container is engaged and held in the engaging hole portion of the holder, the assembling strength of the fire extinguishing agent container to the holder is improved.

[0020]

1 to 5 show an automatic fire extinguisher according to an embodiment of the present invention. This automatic fire extinguisher 1
0 is attached to, for example, the top plate or wall surface of a house, and automatically reacts to an increase in ambient temperature at the time of a fire to prevent the damage from spreading.

As shown in FIG. 1, the automatic fire extinguishing apparatus 10 includes a holder 11 fixed to a top plate or a wall surface, a fire extinguishing agent container 12 held by the holder 11, and a fire extinguishing agent container 12 inside the fire extinguishing agent container 12. It is mainly composed of an enclosed fire extinguishing agent 13 and a destruction means 14 for colliding and destroying the fire extinguishing agent container 12 due to an increase in ambient temperature around the fire extinguishing agent container 12 at the time of a fire.

The holder 11 is, as shown in FIG.
The fire extinguisher container of the bottom wall 11a is provided with a bottom wall 11a formed in a U shape and detachably fixed to a ceiling or a wall surface, and side walls 11b provided upright at both ends of the bottom wall 11a. The destruction means 14 is fixed on the 12 side, while the engagement holes 15 for holding the fire extinguishing agent container 12 are formed on the both side walls 11b. This engagement hole 1
5 has a small diameter portion 15a on the tip side and a large diameter portion 15b on the side of the bottom wall 11a, and both 15a and 15b communicate vertically.

As shown in FIG. 2, the fire extinguishing agent container 12 is a glass tube formed in a cylindrical shape. The fire extinguishing agent 13 is enclosed inside and the outer wall 12a has a uniform thickness. The engaging portions 17 are formed at both ends and have an inner diameter smaller than that of the central portion. This locking part 1
In the case of No. 7, a lid 18 made of aluminum is caulked and joined to the openings at both ends, and as shown in FIG.
It is held and fixed to both side walls 11b of the holder 11 by using a fixing member 11c in a state of being engaged and held by the small diameter portion 15a via b.

The fire extinguishing agent 13 is for producing a large amount of ammonia and carbon dioxide gas against the flame to block oxygen, and at the same time, extinguishes the fire by the heat removal action of water in the solution. For example, ammonium carbonate solution, Examples thereof include sodium carbonate solution.

As shown in FIGS. 2 and 3, the destruction means 14 is a stainless steel fixing plate 19 fixed to the central portion of the bottom wall 11a of the holder 11 on the side of the fire extinguishing agent container 12, and the fixing. A guide member 22 vertically provided at a central portion of the plate 19 on the side of the extinguishing agent container 12;
A movable plate 21 made of stainless steel that is movably provided on the outer peripheral surface of the guide member 22 on the base end 22a side, and an elastic body 20 interposed between the fixed plate 19 and the movable plate 21. The tip portion 22 of the guide member 22
The destruction member 23 is attached to the outer peripheral surface on the b side by a temperature sensitive material 29 in a fitted shape.

As shown in FIGS. 1 and 2, the fixing plate 19 has bolts 3 attached to the bottom wall 11a of the holder 11.
It is fixed using 0, and as shown in FIG.
A pair of guide rods 24 on which the elastic body 20 is mounted are vertically provided. Both guide lots 24 are inserted into the holes at predetermined positions of the movable plate 21, and
A stopper portion 25 is formed at the tip portion.

The guide member 22 is made of a metal material having a higher thermal conductivity than the movable plate 21, such as zinc or brass, and is formed in a cylindrical shape as shown in FIGS. 3 and 4. As shown in FIG. 1, an outer wall 12 a of the fire extinguishing agent container 12 and a bottom wall 11 of the holder 11
It is arranged perpendicular to a. Further, as shown in FIGS. 1 and 2, the guide member 22 has a height set to be substantially equal to that of the guide rod 24, and a tip portion 22b thereof largely projects from the movable plate 21.

As shown in FIG. 3, the movable plate 21 is formed in a U shape and has a bottom wall 28 and both side pieces 27 bent at both ends of the bottom wall 28. A position fixing rib 26 of the destruction member 23 is formed on the wall 28, and the destruction member 2 is interposed via the position fixing rib 26.
3 is elastically held by the elastic body 20. Further, as shown in FIG. 1, both side pieces 27 of the movable plate are vertically bent toward the fire extinguishing agent container 12 side, and
The tip is formed in a tooth shape.

As shown in FIGS. 3 and 4, the elastic body 20 is composed of a pair of coil springs, is mounted on the lower side of the guide rods 24, and is fixed on the fixed plate 19 and the movable plate. It is interposed between the base wall 21 and the bottom wall 28 in a state of being elastically deformed in the axial direction.

The destruction member 23 is also the guide member 22.
Similarly to the above, it is made of a metal material having high thermal conductivity such as zinc and brass, and is formed in a rocket shape as shown in FIG. That is, the destruction member 23 has a tip portion 23.
While a is formed in a cylindrical shape, a base end portion 23b is formed in an annular shape, and the guide member 22 is formed in the through hole in the axial direction.
Is inserted in a fitted shape. The base end 23b of the breaking member 23 is placed on the position fixing rib 26, whereby a predetermined space is provided between the base end 23b of the breaking member 23 and the bottom wall 28 of the movable plate 21. A space (about 5 mm) is provided.

The temperature sensitive material 29 is a fusible alloy (easy fusion gold).
And, for example, Newton alloy (50% Bi 31%
Pb 19% Sn, melting point 95 degrees, onion alloy (50
% Bi 30% Pb 20% Sn melting point about 95 degrees), wood metal (50% Bi 24% Pb 14% Sn 1
2% Cd, melting point approx. 70 degrees, Lipowitz metal (50
Examples include low melting point ternary eutectic alloys such as% Bi 27% Pb 13% Sn 10% Cd melting point about 70 degrees). However, in practice, the proportion of each composition is adjusted to obtain a melting point of about 75 degrees. It is preferable to use an appropriate selection.

The fire extinguisher 10 according to the present embodiment as described above.
According to this, when the temperature of the atmosphere around the fire extinguishing agent container 12 rises when a fire occurs, the guide member 28 and the destruction member 2
Since the temperature of 3 also rises, the temperature sensitive material 29 reaches the melting point and its melting starts, whereby the fixed state of the breaking member 23 is released. Therefore, by the reaction force of the elastic body 20,
The movable plate 21 and the destruction member 23 are ejected toward the outer wall 12a of the fire extinguishing agent container 12 as shown by the arrow P in FIG.

At this time, the destruction member 23 is the guide member 22.
Since it is fitted onto the outer peripheral surface of the fire extinguishing agent container, it is ejected vertically toward the central portion of the outer wall 12a of the fire extinguishing agent container 12 while being guided by the guide member 28, whereby the destruction member 23 is, as shown in FIG. , Vertically collides with the central portion of the outer wall 12a of the fire extinguishing agent container 12. Since the outer wall 12a of the fire extinguishing agent container 12 is destroyed by the impact at the time of the collision of the breaking member 23, it is not necessary to increase the internal pressure of the fire extinguishing agent container 12 to break the outer wall 12a as in the conventional case. Responsiveness to fire is improved and the time required from the occurrence of fire to extinguishing is shortened (extinction starts within about 2 minutes).

In particular, the destruction member 23 is the extinguishing agent container 12
Since it collides vertically with the central portion of the outer wall 12a of the
Like the fire extinguisher 8 described in 00-283598,
The impact at the time of collision will not be biased. Therefore, the outer wall 12a of the fire-extinguishing agent container 12 is evenly destroyed, whereby the fire-extinguishing agent 13 is sufficiently ejected and diffused when a fire occurs, and in this respect, quick and effective fire extinguishing is performed.

At the same time, the movable plate 21 is also ejected in the direction of the fire extinguishing agent container 12, so that the tips of both side pieces 27 of the movable plate 21 are guided by the guide rod 24.
While being guided to the outer wall 12a of the fire extinguishing agent container 12, it collides vertically with both end portions of the outer wall 12a of the extinguishing agent container 12, and this impact also destroys both end portions of the outer wall 12a of the extinguishing agent container 12.

Therefore, the outer wall 12 of the fire extinguishing agent container 12
It is possible to effectively prevent the remaining cracks on both end sides of a, and this further promotes the spray diffusion of the fire extinguishing agent 13. Further, since the tip end portions of the both side pieces 27 of the movable plate 21 are formed in a tooth shape, they have an excellent breaking force, and in this respect as well, the outer wall 12a of the fire extinguishing agent container 12 can be easily broken.

Further, the guide member 22 and the destruction member 23
Is made of a metal material having a higher thermal conductivity than that of the movable plate 21, so that the former 22 and 23 and the latter 21 are
The heat exchange between and is suppressed. Further, between the base end portion 23b of the breaking member 23 and the bottom wall 28 of the movable plate 21,
Since the predetermined interval is provided, the two and 21,23 do not come into contact with each other, whereby heat exchange between the two and 21,23 is further suppressed, and the fusible metal easily reaches the melting point early in a fire.

Then, both locking portions 17 of the fire extinguishing agent container 12
, While being engaged and held by the small diameter portion 15a, the fixing member 1
Since the fire extinguishing agent container 12 is fixed to the holding portion 11b of the holder 11 by using 1c, the assembling property of the extinguishing agent container 12 is improved, and thereby the extinguishing agent container 12 is prevented from dropping during vibration.

[0039]

As is apparent from the above description, claim 1
According to the invention described in (2), when a fire occurs, the outer wall of the fire extinguisher container collides with the outer wall of the fire extinguisher container, and the outer wall of the fire extinguisher container is destroyed by the impact at the time of the collision. It is not necessary to raise the internal pressure of the container to destroy its outer wall, which improves the responsiveness to the fire and shortens the time from the occurrence of the fire to the extinction.

In particular, the destructive member collides vertically with the outer wall of the fire extinguishing agent container while being guided by the guide member. Therefore, as in the fire extinguisher disclosed in Japanese Patent Application No. 2000-283598, the impact at the time of collision is generated. There is no bias. Therefore, the outer wall of the fire-extinguishing agent container is evenly broken, whereby the fire-extinguishing agent is sufficiently ejected and diffused when a fire occurs, and in this respect, quick and effective fire extinguishing is performed.

According to the third aspect of the present invention, both ends of the outer wall of the fire extinguishing agent container are destroyed even by the impact shock of the tips of the both side pieces of the plate, so that the cracks can be effectively prevented from remaining. This further promotes the diffusion of the extinguishing agent.

According to the fourth aspect of the present invention, since the tip portions of the both side walls of the plate are formed in a tooth shape, it has an excellent destructive force. Also in this respect, the outer wall of the fire extinguishing agent container is easily destroyed. be able to.

According to the fifth aspect of the present invention, since heat exchange is suppressed, the fusible metal easily reaches the melting point early in a fire, and in this respect as well, the time from the occurrence of the fire to the extinction is shortened.

According to the invention as set forth in claim 6, since the assembling strength of the extinguishing agent container to the holder is improved, the extinguishing agent container can be prevented from dropping during vibration.

[Brief description of drawings]

FIG. 1 is a perspective view of an automatic fire extinguisher device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a vertical sectional view of the destruction means.

FIG. 4 is a side view of the same.

FIG. 5 is a perspective view showing the same operating state.

FIG. 6 is a front view of a conventional example.

FIG. 7 is a front view showing another example of the conventional example.

[Explanation of symbols]

10 ... Automatic fire extinguisher 11 ... Holder 11a ... bottom wall of holder 11b ... Side wall of holder 12 ... Fire extinguisher container 12a ... Outer wall 13 ... Extinguishing agents 14 ... Means of destruction 15, 16 ... Engagement hole 17 ... Locking part 20 ... Elastic body 21 ... Movable plate 22 ... Guide member 23 ... Destruction member 25 ... Bottom wall of movable plate 27 ... Both ends of the movable plate 29 ... Temperature sensitive material

Claims (6)

[Claims] 1. An automatic fire extinguisher equipped with a fire extinguisher container having a fire extinguisher enclosed therein and a destroying device for destroying an outer wall of the fire extinguisher container, wherein the destroying device has an atmosphere around the fire extinguisher container. A temperature sensitive material that reacts when the temperature rises above a predetermined temperature, a destruction member that collides with the outer wall of the fire extinguishing agent container to destroy when the temperature sensing material reacts, and the destruction member is the fire extinguishing agent container. Automatic fire extinguisher, comprising a guide member that guides the outer wall of the vehicle in a vertical direction. 2. The extinguishant container is held in a U-shaped holder, while the temperature-sensitive material is composed of a fusible metal material, and the guide member includes a bottom wall of the holder. Of the fire extinguishing agent container at the center, and the destructible member is fixed to the guide member by the fusible metal material, and when the fusible metal material is melted, the destructive member is the guide member. The automatic fire-extinguishing device according to claim 1, wherein the fire-extinguishing agent container is ejected vertically toward the outer wall of the fire-extinguishing agent container while being guided. 3. A plate formed in a U shape is movably provided on the proximal end side of the guide member with both side pieces facing the extinguishant container side, while the distal end side of the guide member is provided. In addition, the destructible member is fixed by the fusible metal material, an elastic body is interposed between the bottom wall of the holder and the bottom wall of the plate, and the destructive member and the destructive member are provided by a reaction force of the elastic body. The automatic fire-extinguishing device according to claim 2, wherein tip ends of both side pieces of the plate are ejected vertically toward an outer wall of the fire-extinguishing agent container. 4. The automatic fire extinguisher according to claim 3, wherein the tip ends of both side plates of the plate are formed in a tooth shape. 5. The guide member and the breaking member are made of a material having a higher thermal conductivity than at least the plate, and a predetermined gap is provided between the breaking member and the plate. The automatic fire extinguisher according to claim 3. 6. The fire extinguishing agent container has locking parts having inner diameters smaller than those of the central part on both end sides, and engagements for holding the locking parts on both side walls of the holder. The automatic fire extinguisher according to claim 2, wherein a hole is provided.