WO2004080541A1

WO2004080541A1 - Automatic fire extinguisher

Info

Publication number: WO2004080541A1
Application number: PCT/JP2004/002697
Authority: WO
Inventors: Kazuo Aoki
Original assignee: Kazuo Aoki
Priority date: 2003-03-11
Filing date: 2004-03-03
Publication date: 2004-09-23

Abstract

An automatic fire extinguisher, characterized in that a fire extinguishing fluid storage container (3) in which fire extinguishing fluid is stored, a high-pressure gas container (5) filled with high-pressure gas in a sealed state, a heating means (7) heating the high-pressure gas container (5) to discharge the high-pressure gas in the high-pressure gas container (5) into the fire extinguishing fluid storage container (3) so as to increase a pressure in the fire extinguishing fluid storage container (3), a temperature sensing part (9) for heating the heating means (7) when the temperature sensed by sensing the specified temperature of the surroundings becomes a predetermined set temperature, and a fire extinguishing fluid jetting part (11) jetting the fire extinguishing fluid from the fire extinguishing fluid storage container (3) to the outside are formed integrally with each other.

Description

Description Automatic erasing equipment Technical field

The present invention relates to an automatic fire extinguisher and, more particularly, to an automatic fire extinguisher equipped with a temperature sensing operation system for operating the automatic fire extinguisher when the ambient temperature is a predetermined temperature.

Background art

As a conventional automatic fire extinguishing device, a ceiling-mounted, pressurized downward discharge type automatic fire extinguishing device is known (Japanese Patent Laid-Open No. 5-170). The conventional automatic fire extinguishing system measures the ambient temperature and conducts heat to the temperature sensing unit, a tank that stores the fire extinguishing liquid, and conducts carbon dioxide gas into the container by opening the sealing plate. A liquefied carbon dioxide gas container is provided. An opening pin is provided on the sealing plate of the liquefied carbon dioxide container so as to face the opening pin with a slight gap. A hammer is provided at the tail of the opening pin via a spring maintained in a state compressed by a compression plate. The compression plate is housed in a container, and is pressed against the engagement portion via solder that functions as a sensor sealed with another metal leaving a slight gap. When the hang is melted, the compression plate is disengaged, the opening pin opens the liquefied carbon dioxide container by the elastic force of the spring, and the fire-extinguishing liquid is injected. The automatic fire extinguisher is used at the early stage of fire.

The temperature sensing actuator of the conventional automatic fire extinguisher described above can withstand the complexities of the mechanism and the elastic force of the compressed spring for many years. There was a problem that the equipment was expensive because of the need for a rugged configuration, and that installation was required because the equipment itself was large and heavy.

Furthermore, since the spring is maintained in a compressed state, there is a restriction that the service life of the spring is determined by the restoring force of the spring.

The present invention has been made to solve the above-mentioned problem, and the temperature sensing operation part of the automatic fire extinguishing device is composed of a liquefied carbon dioxide gas container, a heating means and a temperature sensor, and has a small number of parts. The objective is to provide an inexpensive automatic fire extinguishing system that is simple, lightweight, compact and easy to install. Disclosure of the invention

In order to achieve the above object, an automatic fire extinguisher according to the present invention comprises a fire extinguishing solution storage container for storing a fire extinguishing solution, a high pressure gas container filled and sealed with a high pressure gas, and a high pressure gas Heating means for discharging the high-pressure gas in the container into the fire-extinguishing solution container to increase the pressure in the fire-extinguishing solution container, and detecting the temperature around the automatic fire-extinguishing device, and when the detected temperature reaches the set temperature, A temperature sensing unit for heating the heating means, and a fire extinguishing solution jetting unit for jetting the fire extinguishing liquid outward from the fire extinguishing solution container by increasing the internal pressure in the fire extinguishing solution container. Make a summary. Simple drawing of the drawing

FIG. 1 is a front cross-sectional view of the automatic fire extinguisher according to the first embodiment of the present invention. FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a diagram showing the relationship between the operating temperature and the pressure of the sealing plate of the high-pressure gas container.

FIG. 4 is a front sectional view of the automatic fire extinguisher according to the second embodiment of the present invention.

FIG. 5 is a front cross-sectional view of the automatic fire extinguisher according to the third embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First embodiment

Referring to FIGS. 1 and 2, the automatic fire extinguisher 1 A includes a fire extinguishing solution storage container 3 containing a fire extinguishing solution, a high-pressure gas container 5 filled with high-pressure gas, and then sealed. Heating means 7 that heats the gas container 5 to release the high-pressure gas in the high-pressure gas container 5 into the fire-extinguishing solution container 3 and raises the pressure in the fire-extinguishing solution container 3, and detects the temperature around the automatic fire extinguisher. When the detected temperature reaches a preset set temperature, the temperature sensor 9 for heating the heating means 7 and the internal pressure in the fire-extinguishing liquid container 3 increase the internal pressure of the fire-extinguishing liquid from the fire-extinguishing liquid container 3. And a fire-extinguishing liquid injection unit 11 for injecting the extinguishing liquid. The automatic fire extinguisher 1 A is attached to a ceiling wall in a room, the inside of a range hood, or the like to extinguish an initial fire.

Referring to FIG. 2, the fire-extinguishing liquid storage container 3 has a hollow outer central case 13 extending in the longitudinal direction, and an arc-shaped cross section detachably fitted to the left and right sides of the outer central case 13. Left and right case 15 and 17 From Inside the outer central case 13 and the outer left and right cases 15 and 17, there is provided an internal film 19 which functions as an inner case for containing a fire extinguishing liquid. Therefore, the fire extinguishing liquid container 3 has a double structure.

The present embodiment is applicable to a case where the fire extinguishing liquid storage container is single.

A heater 21 functioning as a heating means 7 is provided on a lower part 17 D in the outer right case 17. The heater 21 of the present embodiment has a hollow cylindrical shape with an open upper part. Further, a high-pressure gas container 5 is mounted inside the heater 21. The high-pressure gas container 5 is filled with a high-pressure gas such as a carbon dioxide gas and sealed. At the tip (upper end) of the high-pressure gas container 5, a sealing plate 23 is provided. An external thread 25 is formed on the outer periphery of the tip of the high-pressure gas container 5. The male screw 25 is, for example, integrated with a female screw 29 integrally formed at one end of a pipe 27 as a gas passage. At the other end of the pipe 27, for example, a female screw 31 integrally formed is screwed with a male screw 33 provided on the internal film 19. Therefore, the internal film 19 and the tip of the high-pressure gas container 5 are communicated by the pipe 27.

A support member 35 extends downward at a lower portion of the outer central case 13, for example, at a central portion. At the lower end of the support member 35, a temperature sensing portion 9 made of, for example, bimetal is provided.

On the lower side of the outer central case 13, for example, on the left side of the center, a fire extinguishing liquid jetting section 11 is provided. The fire-extinguishing liquid injection unit 11 includes a porous nozzle plate 37 and an umbrella member 39. At least one orifice (not shown) is formed in the nozzle plate 37, and pressurized fire extinguishing liquid is injected from the nozzle plate 37. An umbrella member 39 is located below the nozzle plate 37. It is attached integrally.

The temperature sensor 9 and the heater 21 are connected by a connection line 41. Further, one end of another connection line 43 is connected to the temperature sensing unit 9, and one end of another connection line 45 is connected to the first connection 21. The other ends of the connection wires 43 and 45 are connected to a not-shown outlet and a DC power supply.

In addition, as a power source (heat source) of the present invention, there is a method of using a battery or a heat collecting plate such as a copper plate having a good heat absorption coefficient (see the third embodiment).

When the high-pressure gas filled in the high-pressure gas container 5 is, for example, carbon dioxide gas, as shown in FIG. 3, the operating temperature of the sealing plate 23 and the pressure range may be in a proportional relationship. Already known. As can be seen from FIG. 3, the internal pressure rises when the pressure is between 35.3 Mpa and 49.O Mpa, and the sealing plate 23 ruptures. That is, since the temperature at this time is from 80 ° C. to 140 ° C., it is understood that when the temperature reaches, for example, 180 ° C., the sealing plate portion 23 bursts.

When the ambient temperature rises due to the initial fire, the temperature sensing unit 9 senses the ambient temperature, and when the sensed temperature reaches a preset set temperature, for example, 95 ° C, via the connection line 41. Heater 21 is energized.

The set temperature can be set by selecting an appropriate temperature in the range of 60 ° (: up to 150 ° C) in addition to 95 ° C. When the temperature reaches 180 ° C., the sealing plate 23 is ruptured.The above set temperature range has a certain width so as not to cause malfunction at the installation location of the present invention and the installation location. Is determined.

When the sealing plate 23 ruptures, the high-pressure gas container 5 is opened. When the high-pressure gas container 5 is opened, high-pressure gas, for example, carbon dioxide gas, which is sealed in the high-pressure gas container 5 is sent to the pipe 27. Pipe 2 7 Is sent out into the upper space S inside the internal film 19.

As a result, the pressure in the inner film 19 increases. As the internal pressure of the inner film 19 increases, a part of the inner film 19 bursts and fire extinguishing liquid is jetted from the fire extinguishing liquid jetting unit 11. The jetted fire-extinguishing liquid is jetted from the jet holes formed in the nozzle plate 37-and is jetted toward the fire source as fine mist-like particles. At this time, the fire-extinguishing liquid is guided by the umbrella member 39 which forms a part of the fire-extinguishing liquid jetting section 11, and is jetted over a wide area to the outside initial fire place. Therefore, the fire extinguishing liquid can be sprayed on the target fire source to extinguish the fire.

As described above, the automatic fire extinguisher 1A includes the fire-extinguishing liquid container 3, the high-pressure gas container 5, the heater 21 as the heating means 7, the temperature sensing unit 9, and the fire-extinguishing liquid injection unit 11 as one unit. It is smaller than conventional automatic fire extinguishers because it is formed in a specific manner. Furthermore, the automatic fire extinguisher 1A according to this embodiment does not require any special installation work, is lightweight, easy to install, is safe and inexpensive. In addition, it is possible to operate efficiently by detecting the initial fire. Further, high durability and long life can be realized.

Since the heating means 7 is connected to the outer periphery of the high-pressure gas container 5, the temperature at which the heater 21 is heated is efficiently transmitted to the high-pressure gas container. Although the heater 21 does not contact the outer periphery of the high-pressure gas container 5 and is provided in a non-contact manner, the efficiency is slightly reduced, but it is feasible.

Since the heating means 7 (21) has a hollow cylindrical shape with an open top, the high-pressure gas container 5 can be easily mounted in the hollow cylindrical shape, and the heating means 7 is further heated. The temperature can be transmitted to the high-pressure gas container 5 efficiently. Since the sealing plate 23 of the high-pressure gas container 5 is communicated with the fire-extinguishing solution container 3 through the pipe 27, the high-pressure gas container 5 can be easily connected to the fire-extinguishing solution container 3. Can be attached. The fire-extinguishing liquid container 3 has a hollow outer central case 13 extending in the left-right direction, and an outer left and right case 15 with an arcuate cross-section detachably fitted to the left and right sides of the outer central case 13. Inside the outer central case 13 and the outer left and right cases 15 and 17 are provided an inner film 19 containing fire extinguishing fluid, which has a double structure. It is safer than before, and only the inner film 19 needs to be replaced. Further, since the high-pressure gas container 5 and the heating means 7 are also housed in the fire-extinguishing liquid storage container 5, the automatic fire extinguisher 1 has a good appearance and is safer.

Second embodiment

Referring to FIG. 4, in the automatic fire extinguisher 1B, the same components as those in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted. A support member 47 is provided on the lower part 17 D of the outer right case 17. The high-pressure gas container 5 is supported on the support member 47 in a state of being laid sideways. A male screw 25 is formed at the tip of the high-pressure gas container 5, and a female screw 49 is formed at a part on the upper right side of the internal film 19.

When the high-pressure gas container 5 and the internal film 19 are attached, the male screw 25 and the female screw 49 are screwed together.

In the present embodiment, when the ambient temperature rises due to the initial fire, the temperature sensing unit 9 senses the ambient temperature, and when the sensed temperature reaches a preset set temperature, for example, 95 ° C., Power is supplied to the heater 21 via the connection line 41. The set temperature can be set by selecting an appropriate temperature in the range of 60 ° C to 150 ° C other than 95 ° C. When the temperature of the heater 21 reaches, for example, 180 ° C., the sealing plate 23 ruptures. When the sealing plate 23 ruptures, the subsequent operations and effects exhibit the same operations and effects as in the first embodiment. Similarly to the above, also in the present embodiment, the range of the set temperature is determined with a certain width so as not to cause a malfunction at the installation location of the present invention and at the installation location.

Accordingly, since the sealing plate 23 of the high-pressure gas container 5 is directly contained in the internal film 19 of the fire-extinguishing liquid storage container 3, the high-pressure gas in the high-pressure gas container 5 is directly transferred to the internal film of the fire-extinguishing liquid storage container 3. It can be easily incorporated into 19.

Third embodiment

The automatic fire extinguisher 1C according to the third embodiment has a different heat source than the automatic fire extinguisher 1A according to the first embodiment. In the following, the same components as those of the automatic fire extinguisher 1A according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 5, in the present embodiment, a heat collecting plate H composed of a copper plate or the like is used as a heat source. The heat collecting plate H is roughly composed of a heat collecting portion H 2 having a Y-shaped cross section arranged outside the container 3 and a heat transfer portion H 1 for transmitting the heat collected by the heat collecting portion H 2 to 5. .

When the heat collecting plate H is used, neither the heating means (heater) nor the bimetal (temperature sensor) described in the first embodiment is required, so that the automatic fire extinguisher according to the first embodiment is not required. In comparison, it can be made at a low cost with fewer parts. In addition, automatic fire extinguisher The predetermined temperature at which the device 1C is operated can have desired characteristics by appropriately changing the material of the heat collecting plate H or the like. Further, the shape of the heat collecting plate H is not limited to that shown in FIG.

The present invention is not limited to the above-described embodiment, but can be embodied in other forms by making appropriate changes. In the embodiment of the invention described above, the heater 21 is used as the heating means, but other heating elements such as a nichrome wire may be used. Further, the temperature sensor 9 has been described as a bimetal, but may be another temperature sensor.

Also, in the present invention, since a spring is not used as in the conventional technology, the temperature sensing operation system does not normally have any stress, and a durable and long-life automatic fire extinguishing device is usually provided. Can be provided. Industrial applicability

As can be understood from the above, according to the automatic fire extinguisher of the present invention, a fire extinguishing liquid storage container containing a fire extinguishing liquid, a high pressure gas container filled with a high pressure gas in a sealed state, and a high pressure gas container Heating means for discharging the high-pressure gas in the high-pressure gas container into the fire-extinguishing solution storage container to increase the pressure in the fire-extinguishing solution storage container; and detecting a predetermined ambient temperature and detecting the detected temperature. A temperature sensor for heating the heating means when the temperature reaches a preset temperature, and a fire extinguishing solution jetting the fire extinguishing liquid outward from the fire extinguishing liquid storage container by increasing the internal pressure in the fire extinguishing liquid storage container. Since the parts are formed physically, they are compact and compact, so there is no need for construction and the equipment is lightweight, easy to install, safe and inexpensive. Moreover, it can efficiently detect early fires Can operate. In addition, it is durable and has a long service life

Further, according to the present invention, since the heating means is provided in contact with the outer periphery of the high-pressure gas container, the temperature at which the heating means is heated can be efficiently transmitted to the high-pressure gas container.

Further, according to the present invention, since the heating means has a hollow cylindrical shape with an open top, a high-pressure gas container can be easily mounted in the hollow cylindrical shape, and the heating means is further heated. The temperature can be efficiently transmitted to the high-pressure gas container.

Further, according to the present invention, since the sealing plate of the high-pressure gas container is directly contained in the fire-extinguishing liquid storage container, the high-pressure gas in the high-pressure gas container can be easily taken directly into the fire-extinguishing liquid storage container. .

Further, according to the present invention, since the sealing plate portion of the high-pressure gas container is communicated with the fire-extinguishing liquid storage container via the gas passage, the high-pressure gas container can be easily attached to the fire-extinguishing liquid storage container. .

Claims

The scope of the claims

1. Automatic fire extinguisher,

A fire-extinguishing liquid storage container for storing a fire-extinguishing liquid,

A high-pressure gas container filled and sealed with high-pressure gas,

Heating means for heating the high-pressure gas container to discharge high-pressure gas in the high-pressure gas container into the fire-extinguishing liquid storage container to increase the pressure in the fire-extinguishing liquid storage container;

A temperature sensing unit for detecting a temperature around the automatic fire extinguishing device and heating the heating means when the detected temperature reaches a set temperature;

A fire-extinguishing liquid injection unit that injects a fire-extinguishing liquid outward from the fire-extinguishing liquid storage container by increasing the internal pressure in the fire-extinguishing liquid storage container;

Characterized by comprising:

2. The automatic fire extinguisher according to claim 1, wherein the heating means is provided in contact with the outer periphery of the high-pressure gas container.

3. The automatic fire extinguisher according to claim 1 or 2, wherein the heating means has a hollow cylindrical shape with an open upper part.

4. The automatic fire extinguisher according to claim 1, 2 or 3, characterized in that a sealing plate of the high-pressure gas container is contained in the fire extinguishing liquid container.

5. The automatic fire extinguisher according to claim 1, 2 or 3, wherein the high pressure A seal plate portion of a gas container is connected to the fire extinguishing liquid container via a gas passage.

6. Automatic fire extinguisher,

A high-pressure gas container filled and sealed with high-pressure gas,

A heat collecting plate including a heating unit surrounding the outer peripheral portion of the high-pressure gas container, and a heat collecting unit provided integrally with the heating unit and provided outside the automatic fire extinguishing device;

A fire-extinguishing liquid injection unit that injects the fire-extinguishing liquid from the fire-extinguishing liquid storage container to the outside,

The heat conducted from the heat collecting unit is transmitted to the high-pressure gas container via the heating unit, and when the amount of conducted heat reaches a predetermined amount of heat, the internal pressure in the fire extinguishing liquid container rises. The fire extinguishing liquid is ejected from the fire extinguishing liquid jetting part.

7. The automatic fire extinguisher according to claim 6, wherein an opening of the high-pressure gas container is closed with a sealing plate, and when the internal pressure of the high-pressure gas container rises, the sealing plate is broken to extinguish the fire. The high-pressure gas in the high-pressure gas container is injected into the liquid collection container.