JP2003310784A - Automatic fire-extinguishing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic fire-extinguishing system which is suitable for the installation in a small-scale building by simplifying the structure. <P>SOLUTION: A fire-extinguishing liquid tank unit is connected to respective closed type ejectors which are arranged at respective areas of a building. The tank unit comprises a fire-extinguishing liquid storage tank, a guide pipe which is run along the external surface of the fire-extinguishing liquid storage tank, a gas cylinder which is attached to the lower end of the guide pipe, a gas introducing pipe which press-feeds a pressurized gas jetted out from the inside of the gas cylinder into the fire-extinguishing liquid storage tank, a starting weight which can roll-drop in the guide pipe and an actuating device. In this case, the actuating device is airtightly attached to the upper end of the fire- extinguishing liquid storage tank, has a float which floats on the fire- extinguishing liquid surface in the fire-extinguishing liquid storage tank, on the lower end, and projects a weight-locking rod which can advance/retract to/from the upper part of the guide pipe and can lock the starting weight only when the float rises, on the upper end. <P>COPYRIGHT: (C)2004,JPO

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 system suitable for being installed in a relatively small building such as a multi-tenant building or a general house. You can expect efficient automatic fire extinguishing,
Moreover, it is possible to secure sufficient safety while having a low cost and a simple structure.

[0002]

2. Description of the Related Art As the most advanced conventional automatic fire extinguishing equipment, the one disclosed in Japanese Patent Laid-Open No. 2001-109966 is generally known. This is a plurality of individual automatic fire extinguishers equipped with at least a fire sensor and a transfer circuit, in addition to the extinguishant radiating means, and the individual automatic fire extinguishers each connected to the transfer circuit of each individual automatic fire extinguisher. It has a judgment circuit that judges the situation by receiving the information from the fire sensor, and based on the judgment result according to the information content, the status of alarm transmission, the emission status of fire extinguishing agents, the status after extinguishing, etc. The fire extinguishing system is configured by a receiver that displays the presence or absence of an alarm in consideration of the occurrence of a fire, or a place where a fire occurred and its status.

[0003]

In the above-described fire extinguishing system, it is possible to quickly and properly carry out automatic fire extinguishing activities only at the location causing the fire, and further improve the initial fire extinguishing performance. However, it is not suitable for multi-tenant buildings and other relatively small-scale buildings because it has a large advantage, but the equipment cost is high and the equipment is large-scale.

In general, when installing an automatic fire extinguishing system using a sprinkler in a relatively large building, a pump room is installed, a water source is secured, and a power source for securing a large power is required. Therefore, it can be said that it is difficult to apply it to a small building. In addition to that, there is also a problem that the fire extinguishing system cannot be started when the electric circuit is cut off due to a fire or an accident.

[0005]

Therefore, the present invention solves the above-mentioned problems and is particularly suitable for being installed in a relatively small building such as a multi-tenant building or a general house, and is quick even when a power failure occurs. In addition, it developed an efficient automatic fire extinguishing system.

[0006] Specifically, it comprises a closed radiator disposed in each part of the building through a pipe, and a fire extinguishing liquid tank unit connected to the pipe. A fire extinguishing liquid storage tank filled with the fire extinguishing liquid, a guide pipe vertically installed along the outer surface of the fire extinguishing liquid storage tank, and a starting device facing the inside of the guide pipe at the lower end of the guide pipe. When the attached gas cylinder for pressurization and the activation device for the gas cylinder for pressurization are activated, a gas introduction pipe for pressurizing the pressurized gas ejected from inside the pressurized gas cylinder into the fire extinguishing liquid storage tank, and the inside of the guide pipe A starting weight capable of rolling and dropping, and a float that is airtightly attached to the upper end of the fire extinguishing liquid storage tank, floats floating on the extinguishing liquid surface in the extinguishing liquid storage tank at the lower end, and the above at the upper end. Idopaipu a possible forward and backward in the upper part, to an automatic fire extinguishing equipment comprising a said starting weight actuator which is projected a lockable Tsumugakari Tome杆 only when rising of the float.

In the above structure, when a fire occurs, the closed radiator is opened by the flame or hot air, and the extinguishing liquid stored in the extinguishing liquid storage tank of the extinguishing liquid tank unit is transferred through the pipe to the above-mentioned structure. It is emitted from the radiator.
When the amount of the extinguishing liquid in the extinguishing liquid storage tank decreases, the liquid level of the extinguishing liquid also descends, and the float floating on the liquid surface also descends accordingly, so it entered the guide pipe and locked the weight. As a result that the weight locking rod of the device also descends, the starting weight falls along the guide pipe and hits the starting device to open the pressure gas cylinder. When the pressurized cylinder is opened, pressurized gas is pumped into the fire-extinguishing liquid storage tank through the gas introduction pipe, pressurizes the fire-extinguishing liquid storage tank and causes the fire-extinguishing liquid in the storage tank to ignite through a pipe. It is pressure-fed to the radiator of and the automatic injection is performed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the following, concrete contents of the present invention will be described with reference to the embodiments of FIGS. 1 to 3, 1 is a building, 2 is main piping, 3 is a radiator, and 5 is a fire extinguishing liquid. A tank unit is shown. In this case, the building 1 is exemplified by a four-story small-scale structure from the first floor portion 1a to the fourth floor portion 1d. The main pipe 2 is arranged from the fire extinguishing liquid tank unit 5 to each floor 1a to 1d, and a valve 4 for testing and drainage is attached to the tip (lower end).

Branch pipes 2a are arranged in the main pipe 2 at the portions leading to the floors 1a to 1d, and radiators 3 are attached to the branch pipes 1a to 1d. In this case, as the radiator 3, in this case, a closed type such as a closed type sprinkler having a heat-sensitive opening mechanism that is opened when the temperature rises to a certain temperature or higher due to flame or heat and can radiate the extinguishing liquid. What is used.

Further, as shown in detail in FIG. 2, the fire extinguishing liquid tank unit 5 has a fire extinguishing liquid storage tank 6 connected to the above-mentioned main pipe 2 and a vertical direction along the outer surface of the fire extinguishing liquid storage tank 6. And a pressurizing gas cylinder 8 attached to the lower end of the guide pipe 7 with the striking means 9 of the starter 10 facing the inside of the guide pipe 7.
When the starting device 10 for the pressurizing gas cylinder 8 is started, the gas introducing pipe 11 for sending the pressurized gas ejected from the pressurizing gas cylinder 8 into the fire extinguishing liquid storage tank 6 and the inside of the guide pipe 7 are The starting weight 12 capable of rolling and dropping, and when the extinguishing liquid in the fire extinguishing liquid storage tank 6 is reduced, the starting weight 12 is dropped to open the pressurizing gas cylinder 8, and the inside of the pressurizing gas cylinder 8 is opened. And an actuating device 15 for supplying a pressurized gas into the fire extinguishing liquid tank unit 5.

The starting device 10 and the actuating device 15 for the pressurizing gas cylinder 8 will be described in more detail. The starting device 10 for the pressurizing gas cylinder 8 has a lower end for applying a pressurizing force to the lower end portion, as shown in an enlarged view in FIG. A spring 10 is provided between a mounting portion 10a having a hollow inside for mounting the gas cylinder 8 and a holder 10d in the mounting portion 10a.
A gas for connecting the hollow needle body 10c with a sharply pointed lower end and the gas introduction pipe 11 to communicate with the hollow chamber of the mounting portion 10a, which is planted so as to always be urged upward through b. It is composed of an introduction pipe connecting portion 10e and a striking means 9 penetrating the gas introduction pipe connecting portion 10e and having an upper end facing the inside of the guide pipe 7.

The actuating device 15 also includes a fire extinguishing liquid storage tank 6
It is attached to the upper end opening of the operating rod 14 and has a cylindrical shape with the lower end opened, and the operating rod 14 is penetrated vertically in the inside, and the lower end opening is located at the lower end of the operating rod 14. The float 13 floating in the fire-extinguishing liquid in the fire-extinguishing liquid storage tank 6 can be received. Further, above the operating rod 14, the weight locking rod 14a is projected upward so as to be vertically movable while maintaining airtightness, and the weight locking rod 14a is guided only when the float 13 is raised. Is configured to enter the upper part of the and to lock the starting weight 12.

In the figure, reference numeral 16 denotes a check valve coaxially fitted in the weight locking rod 14, and is a gas cylinder 8 for pressurization.
When pressurized gas is pumped into the fire extinguishing liquid storage tank 6 from the extinguishing liquid, the extinguishing liquid is pressed against the inner peripheral surface of the upper through hole of the actuating rod 14 penetrating the inside of the actuating device 15 to maintain airtightness. The extinguishing liquid 17 in the storage tank 6 can be pressurized and pumped toward each radiator 3 in the building 1 through the main pipe 2 and the branch pipe 2a.

Therefore, the float 13 is the extinguishing liquid 1
7, the float 13 rises when the filling amount of the extinguishing liquid 17 is sufficient and the position of the liquid surface is near the actuating device 15, and the actuating rod 14 rises accordingly. Then
The weight locking rod 14 at the upper end enters the guide pipe 7 to prevent the starting weight 12 from falling. In the figure, V represents a valve for supplying / stopping the extinguishing liquid.

On the other hand, the extinguishing liquid 17 filled in the extinguishing liquid storage tank 6 may be only water, and more preferably a general-purpose liquid extinguishing agent or a foaming extinguishing agent is used.
In this case, mixing an alkaline salt in the fire extinguishing liquid can suppress the generation of toxic gas such as carbon monoxide and facilitate the evacuation.

In the above structure, when a fire occurs, the closed type radiator 3 installed corresponding to the location of the fire is opened by the flame or hot air, and the fire extinguishing liquid storage unit 5 stores the fire extinguishing liquid. The fire extinguishing liquid 17 stored in the tank 6 is radiated from the radiator 3 at the above-mentioned target location toward the fire occurrence location via the main piping 2 and the branch piping 2a.

When the amount of the extinguishing liquid 17 in the extinguishing liquid storage tank 6 decreases, the liquid level of the extinguishing liquid also descends, and the float 13 floating on the liquid surface also descends accordingly, so that it enters the guide pipe 7 and is activated. As a result that the weight locking rod 14a of the actuating device 15 which has locked the working weight 12 also descends, the starting weight 12 falls along the guide pipe 7 and taps the striking means 9. Further, the striking means 9 descends to lower the puncture body 10c, and the sharp tip portion opens the opening of the gas cylinder 8 for pressurization.

Further, when the pressurizing cylinder 8 is opened, the pressurized gas is pressure-fed into the fire extinguishing liquid storage tank 6 through the gas introduction pipe 11, and the pressure of the fire extinguishing liquid storage tank 6 is compressed so that the fire extinguishing liquid 1
7 is pressure-fed toward the radiator 3 at the fire occurrence location through the main pipe 2 and the branch pipe 2a, and is automatically jetted.

In the above embodiment, the case where the fire extinguishing liquid tank unit 5 is installed on the roof of the building 1 has been described, but the invention is not limited to the roof.
It can be installed in any place inside or outside the building 1 on a floor below this.

[0020]

As described above, the present invention comprises a radiator arranged in each part of a building through a pipe, and a fire extinguishing liquid tank unit connected to the pipe. , A fire extinguishing liquid storage tank filled with the extinguishing liquid, a guide pipe vertically installed along an outer surface of the extinguishing liquid storage tank, a lower end of the guide pipe, and a starter in the guide pipe. A gas cylinder for pressurizing that is installed so as to face, and a gas introduction pipe that pressurizes the pressurized gas ejected from the pressurized gas cylinder into the fire extinguishing liquid storage tank when the activation device of the gas cylinder for pressurizing is activated.
A starter weight capable of rolling and falling in the guide pipe, a float floating on the fire extinguishing liquid surface in the fire extinguishing liquid storage tank at the lower end, which is airtightly attached to the upper end of the fire extinguishing liquid storage tank, and an upper end. And an actuating device which is capable of advancing and retracting into the upper portion of the guide pipe, and in which a weight locking rod capable of locking the starting weight is projected only when the float rises.

Therefore, since it does not require large-scale and expensive equipment such as installation of a pump room such as a conventional automatic fire extinguisher and securing of water source, it is suitable for a multi-tenant building and other relatively small-scale buildings. There is. In addition, since a pressurized gas cylinder is used as a starting source, there is no problem even if the electric circuit is cut off due to a fire or accident, and within a fixed value for a long period of time compared to the case where the fire extinguishing liquid storage tank is of the pressure accumulating type. It can maintain pressure and has excellent durability.

Further, as an extinguishing solution, if alkaline salts are mixed in the extinguishing solution, generation of toxic gas such as carbon monoxide can be suppressed, and evacuation can be further facilitated.

[Brief description of drawings]

FIG. 1 is a system diagram when a fire extinguishing facility is installed in a small building, which is an embodiment of the present invention.

FIG. 2 is a side view showing a part of the extinguishant agent tank unit in detail, showing a detail thereof.

FIG. 3 is a partially enlarged vertical sectional view of a starting device in a gas cylinder for pressurization.

[Explanation of symbols]

1 building 2 Main piping 2a Branch pipe 3 radiator 4 valves 5 Fire extinguishing liquid tank unit 6 Fire extinguishing liquid storage tank 7 Guide pipe 8 Gas cylinder for pressurization 9 striking means 10 Starter 10a mounting part 11 Gas introduction pipe 12 Starting weight 13 floats 14 Working rod 14a Weight locking rod 15 Actuator 16 Check valve 17 Fire extinguishing liquid V valve

Continued front page    (72) Inventor Takayuki Tsuda             1-1 1-1 Shimomachiya, Chigasaki City, Kanagawa Prefecture             Miyata Industry Co., Ltd. (72) Inventor Yoshinori Abe             1-1 1-1 Shimomachiya, Chigasaki City, Kanagawa Prefecture             Miyata Industry Co., Ltd. F-term (reference) 2E189 BA03 BB08 BC09 CC02                 2E191 AA01 AB41

Claims (4)

[Claims] Claims: 1. A closed radiator provided in each part of a building through a pipe, and a fire extinguishing liquid tank unit connected to the pipe. Further, the fire extinguishing liquid tank unit is internally provided with the fire extinguishing liquid. A fire extinguishing liquid storage tank, a guide pipe vertically installed along the outer surface of the fire extinguishing liquid storage tank, and a starter attached to the lower end of the guide pipe so as to face the inside of the guide pipe. When the pressurizing gas cylinder and the starting device for the pressurizing gas cylinder are activated, the pressurized gas ejected from the pressurized gas cylinder is pumped into the fire extinguishing liquid storage tank, and the guide pipe is rolled. A weight that can be dropped, a float that is airtightly attached to the upper end of the fire extinguisher liquid storage tank, floats on the fire extinguishing liquid surface in the fire extinguishing liquid storage tank at the lower end, and the guide pipe at the upper end. Of a retractable into the upper portion, an automatic fire extinguishing equipment comprising a said starting weight actuator which is projected a lockable Tsumugakari Tome杆 only when rising of the float. 2. The automatic fire-extinguishing equipment according to claim 1, wherein the closed radiator is provided with a heat-sensitive opening mechanism. 3. The automatic fire-extinguishing equipment according to claim 1, wherein the fire-extinguishing liquid in the fire-extinguishing liquid storage tank is mixed with alkali salts. 4. The automatic fire extinguishing system according to claim 1, wherein the operating device is provided with a check valve above the float.