JP2537868Y2 - Water injection device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water injection device installed in a room in preparation for a fire.

[0002]

2. Description of the Related Art Conventionally, a water spraying device installed in a room in preparation for a fire includes a large number of water curtains formed in the room at the same time as a fire occurs in the room. Some rooms partition the room into a plurality of sections. According to this device, the spread of fire is prevented by the curtain of water, and the propagation of smoke generated by the fire is suppressed, so that people can safely evacuate to evacuation routes such as emergency stairs without being wrapped in smoke. .

[0003]

However, in the above-described water injection device, since a water curtain is formed at a place other than the place where a fire occurs, it is possible to efficiently extinguish only the fire place locally. Can not. In addition, even if a fire occurs anywhere in the room, a large amount of water is required at once because a large number of water curtains are formed in the room at the same time. It can not be said that it is used, and after the fire is extinguished, water and other damage to buildings and other places are severe except at the place where the fire occurred. The present invention has been made in order to solve the above-mentioned problems, and it is possible to extinguish a fire locally and to extinguish the fire efficiently by using water. It is an object of the present invention to provide a water injection device with less damage to buildings and the like.

[0004]

The water injection device according to the present invention comprises:
On the ceiling of the room, there are a nozzle grid body formed by arranging a plurality of nozzles vertically and horizontally to form a plurality of nozzle grids, and a smoke sensor for detecting smoke from a fire generated in an area corresponding to the nozzle grids. And when the smoke sensor detects smoke,
Control means for receiving the sensing signal and injecting water from the nozzles constituting the corresponding nozzle grid is provided.

[0005]

In the water jetting device of the present invention, when the smoke sensor corresponding to the nozzle grid detects smoke caused by a fire and the control means receives this detection signal, the smoke sensor corresponding to the smoke sensor in the nozzle grid body is detected. Only the nozzle grid is activated, and only a four-sided water curtain is formed in the room surrounding the fire location, that is, the smoke location.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the water injection device according to the present invention will be described below with reference to the drawings. 1A and 1B are diagrams illustrating an example of a water injection device according to the present invention. FIG. 1A is a schematic diagram illustrating an example of nozzle arrangement in a relatively large room such as an office, and FIG.
FIG. 3 is a view in the direction of the arrow B in FIG. As shown in the example, in this embodiment, a plurality of nozzles 21 are arranged vertically and horizontally on a ceiling 20a of a large room 20 to form a plurality of nozzle grids 27. The nozzle grid body 26 is formed by such a nozzle grid 27. It is configured.

The nozzles 21 constituting each nozzle grid 27
Is integrated into one end on the side opposite to the tip opening for each side of the nozzle grid 27, and each of the collected portions is a valve 2 serving as control means in the present invention.
2 are provided. Each valve 22 is connected, for example, via a water pipe 23 to ordinary water or a water storage tank (not shown) storing a liquid containing a fire extinguishing agent for preventing fire spread which causes little harm to the human body. Have been.

A smoke sensor (not shown) corresponding to each nozzle grid 27 is provided on the ceiling 20a of the room 20, for example. The smoke sensor senses smoke from a fire generated from an area corresponding to the nozzle grid 27 and outputs the detection signal to the valve 22 that operates the corresponding nozzle grid 27.
Is transmitted. Here, the region corresponding to the nozzle grid 27 refers to a space where the nozzle grid 27 is projected.

In such a water jet device installed in the room 20, a fire occurs, and when the smoke sensor for detecting smoke in the fire occurrence place 25, that is, the area including the place where smoke is generated, detects this smoke. , The sensing signal is the corresponding nozzle grid 2
7 (portions indicated by ● in FIG. 1A) are sent to four valves 22. Then, only the four valves 22 that have received the sensing signal open.

That is, of the plurality of nozzle grids 27, the nozzle grid 27 surrounding the fire occurrence location 25 as a center
Only operate independently. As a result, the water supplied from the water storage tank to the water pipe 23 is jetted from each nozzle 21 of the nozzle grid 27 indicated by ●, and only the water curtain 24 composed of four surfaces surrounding the fire occurrence place 25 is formed. It is formed.

In the above-described water injection device, when a fire occurs, only the nozzle grid 27 surrounding the fire occurrence location 25 is operated by the smoke sensor and the valve 22, so that the fire occurrence location 25 is surrounded. As a result, the water curtain 24 is formed, so that the fire occurrence location 25 can be efficiently extinguished locally and fire spread can be prevented. In addition, the water curtain 24 causes the fire place 2
Since 5 is isolated from the rest of the room 20, smoke transmission is minimized.

Further, since only the water curtain 24 surrounding the fire occurrence location 25 is formed, water is used efficiently, and since the water curtain 24 is not formed in a place other than the fire occurrence location 25, fire extinguishing is performed. After that, there is almost no damage to the building or the like due to water except for the fire place 25.
Therefore, according to the water injection device of the present embodiment, fire can be extinguished using water efficiently, damage to the building due to fire and fire extinguishing activities can be reduced, and people can be evacuated safely. .

The formation of the water curtain 24 by spraying water from the nozzle 21 can be performed for a time that can be sufficiently evacuated by setting the amount of water in the water storage tank in advance. Further, in this embodiment, the case where the fire 25 occurs at one place is described. However, when the fire occurs at a plurality of places in the room 20, the water curtain 24 is surrounded so as to surround each fire occurrence place 25. Of course, it can be formed.

Further, in this embodiment, the case where the water injection device is installed alone is described. However, by using a conventional sprinkler or the like together, the fire extinguishing efficiency in local fire extinguishing can be further enhanced. When the wall of the room 20 is one side of the grid formed by the nozzle grid 27, the nozzle 21 is arranged on the ceiling 20 a along the wall of the room 20, and if water is blown out or flows down from the nozzle 21, flammable substances It is possible to further prevent the spread of fire near the wall where the building is likely to be placed, and to protect the structural part of the building from the heat of fire.

[0015]

As described above, according to the present invention, when the smoke sensor detects smoke caused by a fire, the nozzle grid corresponding to the smoke sensor of the plurality of nozzle grids operates independently, and Since only a water curtain consisting of four surfaces surrounding the fire place is formed inside the fire, the fire place can be efficiently extinguished locally, preventing fire spread and using water efficiently Is done. Further, since water curtains are not formed in places other than the fire place, there is almost no damage to buildings and the like due to water in places other than the fire place after the fire is extinguished, and damage to the buildings due to fire and fire extinguishing activities can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a water injection device of the present invention.

[Explanation of symbols]

 Reference Signs List 20 Room 20a Ceiling 21 Nozzle 22 Valve (control means) 24 Water curtain 25 Fire place (smoke place) 26 Nozzle grid 27 Nozzle grid

Claims (1)

(57) [Scope of request for utility model registration] 1. A nozzle grid formed by arranging a plurality of nozzles vertically and horizontally on a ceiling of a room to form a plurality of nozzle grids, and detecting smoke from a fire generated in an area corresponding to the nozzle grids. And a control means for receiving the detection signal and spraying water from the nozzles constituting the corresponding nozzle grid when the smoke sensor detects smoke. Injection device.