JPH0341972A - Fire extinguishing device - Google Patents

Abstract

PURPOSE:To acquire enough fire extinguishing ability by providing a water and alkali salt housing box, which is arranged in a tower connected to a nozzle arranged on the both side part wall faces of the tower, charging water and alkali salt to be discharged with prescribed pressure toward the object of protection according to a command. CONSTITUTION:When a control panel operation box 7 is operated based on the command of a sensor 6, an acoustic warning is generated from a loudspeaker 10 and further, when activating operation is executed, the water and alkali salt as fire extinguisher in a water and alkali salt housing box 9 is simultaneously discharged from a nozzle 8 toward a car loaded on a cage 3 with the prescribed pressure. The water and alkali salt housing box 9 is formed with small dimensions and can be activated by a direct current voltage. Then the water and alkali salt normally is used for extinguishing the fire of a kitchen range, etc. Then, since anti-freezing ability is large (-25 deg.C) and water soluble ability is provided, accordingly, a cooling effect is high, a negative catalyser effect is high and the water and alkali salt can be atomized as well. Since spraying time can be continued for 30-55 seconds, the various kinds of fire extinguishment are executed to oil fire, etc.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to, for example, a fire extinguishing device that detects the occurrence of a fire and extinguishes the fire by discharging a fire extinguishing agent into a protected area in which a protected object is housed; In particular, it relates to extinguishing vehicle fires housed in multi-story parking lots using reinforced liquid.

[Background Art] In cities where land prices have skyrocketed, multi-story parking lots are used as parking lots that can accommodate a large number of vehicles in a small site area. According to the Fire Service Act Enforcement Ordinance, parking lots where many vehicles (10 or more) are accommodated must not be equipped with water spray, foam, carbon dioxide, fumes, etc.
It is mandatory to install fire extinguishing equipment that uses chloride, powder, etc. as a fire extinguishing agent.

Figure 3 is a system diagram showing, for example, a conventional fire extinguishing system, and Figure 4 is an example of cage arrangement in a vertical circulation system, where 1 is a tower in which a vehicle is housed, 3 is a cage in which a vehicle is mounted, and 4 is a cage. 3 is a chain that circulates, 5 is a shutter that blocks the entrance to tower 1, 6 is a sensor that detects the occurrence of a fire, 7 is a control panel operation box that controls the activation of the fire extinguishing system, and 8 is a system that releases extinguishing agent. a nozzle; 10 is a speaker that notifies the inside of the tower 1 of the occurrence of a fire; 12 is an indicator light that indicates the operation of the fire extinguishing system; 13 is a storage container filled with extinguishing agent; 14 is a storage container room that accommodates the storage container 13. be.

In the conventional fire extinguishing system as described above, one unit in a multi-story parking lot is used as a protected area, and when a fire occurs, the sensor 6 detects the fire and notifies the management room or the like of the occurrence of the fire. The manager immediately operates the control panel operation box 7, but since there is a risk of suffocation depending on the extinguishing agent, an evacuation announcement is issued as an acoustic warning from the speaker 10 to ensure that no one is inside the multi-storey parking lot. Check and start the fire extinguishing system. The fire extinguishing system opens the storage container 13 housed in the storage container room 14 with a slight delay after the start-up operation, and the fire extinguishing agent is discharged from the nozzle 8 arranged at key points in the tower 1 through piping from the storage container room 14. It will be released over the entire area. At this time, an indicator light 12 placed near the shutter 5 at the entrance/exit of the tower 1 lights up.

When the multi-storey parking lot is unoccupied at night, when the sensor 6 detects a fire, the fire extinguishing system may be automatically activated and a fire extinguishing agent may be similarly released into the inner area of the tower 1.

The extinguishing agent is sealed in a storage container 13 as stipulated by the High Pressure Gas Control Law and stored in a storage container chamber 14 provided near the multi-level parking lot, and the two are connected by high pressure gas piping or the like. The number of storage containers 13 is determined substantially depending on the number of vehicles accommodated, that is, the volume of the protected compartment.

[Problem to be solved by the invention] With the conventional fire extinguishing system as described above, a multi-story parking lot usually has one fire extinguisher.
A system for releasing the entire area within the tower 1 is adopted as the two protected sections, and the required amount of extinguishing agent and the number of storage containers 13 are determined according to the number of vehicles accommodated, that is, the volume of the tower 1. Typically, six to eight storage containers 13 are used in a multi-story parking lot that accommodates about 30 vehicles, and a storage container room 14 for accommodating these containers is provided near the tower 1. Therefore, high pressure gas piping is required from the storage container room 14 to each nozzle 8 in the tower 1, and in cities where land prices are high, securing a site for the storage container room 14 requires expense. Furthermore, halon used as a fire extinguisher is expensive, and in the case of carbon dioxide, there is a risk of death by suffocation.

This invention was made to solve this problem, and uses a fire extinguishing agent that does not pose a risk of suffocation, is inexpensive, and is effective even at low temperatures. The purpose of this invention is to provide a fire extinguishing system that has sufficient fire extinguishing ability to replace halon and carbon dioxide, which simplifies the piping with the nozzle 8 and does not require a site outside the tower 1.

[Means for Solving the Problems 1] The fire extinguishing system according to the present invention is disposed on the walls on both sides of the tower so that it can be located within the effective range of extinguishing agent discharged toward a plurality of protected objects housed within the tower. This system is equipped with a reinforced liquid storage box that is connected to each nozzle and is placed inside the tower and is filled with a reinforced liquid for the water system that is discharged at a predetermined pressure toward the protected object upon command. .

[Operations] In this invention, a water-based strengthening liquid is used instead of halon or carbon dioxide, and a discharge method is adopted in which the discharge is directed toward the object to be protected.

Therefore, since halon and carbon dioxide are not used, the risk of death by suffocation can be avoided.

Since no site is required other than a parking lot, installation in cities can be done economically.

The piping to the nozzle can be shortened, simplifying the equipment, and since the nozzle and extinguishing agent are placed close to each other, it is easy to adapt to changes in the number of vehicles accommodated in the parking lot, that is, the dimensions of the tower.

[Embodiment 1] An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a top sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view of main parts of FIG.
4,5.6.7.8゜10 are the same as the conventional device,
9 shows a reinforced liquid storage box in which a container is filled with a water system reinforced liquid extinguishing agent that has antifreeze properties and a large cooling effect. In the fire extinguishing system configured as described above, a cage 3 on which a vehicle is mounted is mounted on a chain 4 which is rotationally driven at a predetermined circulation speed by a drive wj mount 2 mounted in a tower 1 of a multi-story parking lot. It is placed and the lifting and lowering operations are performed. vehicle cage 3
When loading the tower 1, the door of the shutter 5, which is the entrance to the tower 1, is opened and closed. A multi-story parking lot usually accommodates 10 to 40 vehicles, and for example, depending on the installation interval of the cages 3 arranged on the chain 4, there are nozzles 8 on the walls of both surveying parts of the tower 1 and a strengthening liquid connected to the nozzles 8. Storage boxes 9 are arranged in columns.

When the control panel operation box 7 is operated based on the command from the sensor 6, an acoustic alarm is generated from the speaker 10, and when the activation operation is further performed, the reinforced liquid as a fire extinguisher in the reinforced liquid storage box 9 flows from the nozzle 8 to the cage 3. It is released all at once at a predetermined pressure in the direction of the vehicle mounted on the vehicle.

The reinforcing liquid storage box 9 has a small size and can be started with DC voltage.The reinforcing liquid is usually used for extinguishing kitchen stoves, etc., and has strong antifreeze properties (-25°C) and is water-soluble. It has a high cooling effect, has a negative catalytic effect, and can be made into a mist. The radiation time can last for about 30 to 55 seconds, so it can extinguish various types of fires, including oil fires.

The nozzles 8 are arranged so that the vehicle to be protected is located within the effective firing range of the extinguishing agent discharged from one of the nozzles 8 according to the arrangement interval of the cages 3, and the extinguishing agent is discharged at a predetermined pressure for a radiation time. Since the liquid can adhere to the surface of the vehicle and cover the entire planar structure of the vehicle, any fire that occurs can be reliably extinguished.

The nozzle 8 and the strengthening liquid storage box 9 are arranged close to each other, and the dimensions of the piping connecting them can be significantly shortened.
It can also be easily attached to the side wall. Therefore, the storage container room 14 is not provided, and the site becomes unnecessary, and it can be easily used for various multi-story parking garages, and construction of the multi-story parking garage becomes economical.

Extinguishing agents using reinforced liquid are non-hazardous and harmless to humans and animals.
Can be widely used as an alternative to other extinguishing agents, also at night,
When the tower 1 of the multi-story parking garage is unoccupied, a start command is immediately given to the control panel operation box 7 upon detection of a fire from the sensor 6, so that the nozzle 8 can automatically discharge the reinforcing liquid toward the vehicle.

[Effects of the Invention] As explained above, this invention can be used as a substitute for halon and carbon dioxide by using a reinforced liquid as a fire extinguishing agent and having a simple structure in which it is placed in the tower close to the nozzle that discharges it. The extinguishing agent is discharged into the vehicle at a predetermined pressure through a water system, but since the extinguishing agent is arranged in fractions, the size of each whistle can be made smaller.

The piping dimensions to the nozzle can be significantly shortened, and a site for a storage container room is no longer required, so construction of multi-story parking lots in cities can be done economically, and it is also easy to change the volume of multi-story parking lots. It has the effect of being applicable.

[Brief explanation of drawings]

Fig. 1 is a top sectional view showing an embodiment of the present invention, Fig. 2 is a sectional view of the main part of Fig. 1, Fig. 3 is a system diagram showing a conventional fire extinguishing system, and Fig. 4 is a vertical circulation system. This is an example of cage arrangement. In the figure, 1 is a tower, 2 is a drive device, 3 is a cage,
4 is chain, 5 is shutter, 6 is sensor, 7 is control 1
1 is an operation box, 8 is a nozzle, 9 is a reinforcing liquid storage box, and 10 is a speaker. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] A fire extinguishing system that detects a fire occurring in a tower of a multi-level parking lot in which vehicles to be protected are housed, and extinguishes the fire based on these commands, comprising: The nozzles are installed on the walls on both sides of the tower so that the extinguishing agent can be located within the effective range of the extinguishing agent discharged toward the protected object, and the nozzle is connected to each of the above nozzles and is installed inside the tower to protect the protected object according to the above directive. A fire extinguishing device characterized by comprising: a water system strengthening liquid storage box filled with a water system strengthening liquid to be discharged at a predetermined pressure toward the target.