JP2023103545A - Fire-fighting installation and method of fire fighting - Google Patents

Abstract

To provide an installation that suppresses increase in installation scale and cost, improves fire-fighting performance and can substitute a carbon dioxide fire-fighting installation.SOLUTION: A fire-fighting installation for extinguishing a fire in a partitioned protection section 10, when a smoke sensor 16 or a heat sensor 18 detects a fire in the partitioned protection section 10, discharges a nitrogen gas from a nitrogen head 12 toward the whole area in the partitioned protection section 10 and discharges charged water particles from a charged mist spray head 14 toward a fire source side while controlling respective discharge of the gas and the particles, thereby extinguishing a fire while exerting high extinguishment effect.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a fire extinguishing system and a fire extinguishing method for extinguishing a fire that breaks out in a partitioned protective compartment by releasing nitrogen gas and charged water particles.

Conventionally, halon 1301 was the representative fire extinguishing equipment when it came to gas-based fire extinguishing equipment. Its use as a drug is restricted.

For this reason, carbon dioxide fire extinguishing equipment has become mainstream as an alternative to halon 1301 fire extinguishing equipment. Nitrogen fire extinguishing equipment, which is friendly to the environment and the human body, is becoming mainstream in Japan.

However, carbon dioxide fire extinguishing equipment, which once became mainstream, has a long track record as a fire extinguishing equipment, has a lot of knowledge about its performance, etc., and is already installed in various places. In addition, although the amount of carbon dioxide required for extinguishing is not as high as that of Halon 1301, it is less than that of inert new gas that replaces carbon dioxide, especially when compared to nitrogen, which is an inert new gas. It takes about 2. In addition, as the new inert gas, there are fire-extinguishing gases such as IG-541 and IG-55.

The effect of the advantage that the amount of carbon dioxide filled in this container is small is very large. Nitrogen-filled containers cannot be stored in storage facilities for such containers, and a large amount of nitrogen is required to extinguish a fire. It is difficult to replace nitrogen fire extinguishing equipment with carbon dioxide fire extinguishing equipment because it is necessary to install a pressure relief port to prevent the internal pressure from rising. In addition, when installing a new nitrogen fire extinguishing system, it is necessary to make the container storage facility larger than the conventional halon 1301 fire extinguishing system and carbon dioxide fire extinguishing system, and to install an additional pressure relief port. A problem of cost increase also arises.

On the other hand, the realization of new inert gas fire extinguishing equipment such as nitrogen that retains the advantages of carbon dioxide fire extinguishing equipment is expected from the social trend of aiming for zero carbon due to concerns about global warming.

By the way, halon-based gases and halocarbon-based new gases extinguish fire by stopping the chain reaction of combustion through a chemical reaction with fire flames. Although some claim it, it is known that poisonous gases (such as hydrogen fluoride) that affect the human body are generated when the chain reaction of combustion is stopped by reacting with flames. The amount of poison gas generated has a positive correlation with the size of the flame and the reaction time between the flame and the fire extinguishing gas. Since the reaction time between the flame and the extinguishing gas is also lengthened, there is a problem that the amount of poison gas generated increases in proportion to the size of the flame.

For this reason, it is important to complete the extinguishing at the initial stage of a fire with a small flame as much as possible in order to reduce the damage after the extinguishing. In such a new halocarbon gas fire extinguishing system, the idea is to extinguish 90% of the fire extinguishing gas filled in the container within about 10 seconds after the fire is declared.

On the other hand, the fire extinguishing principle of the nitrogen fire extinguishing system is fire extinguishing by the suffocating effect caused by lowering the oxygen concentration in the protected compartment by discharging nitrogen gas into the protected compartment. Therefore, it is important to suppress the amount of combustion gas generated and to prevent fire extinguishing failures due to the inability to maintain the fire extinguishing environment due to nitrogen gas leakage from the protected compartment and the accompanying increase in oxygen concentration. It is required to quickly extinguish the fire by making the oxygen concentration reach the extinguishing concentration at which the flame cannot be maintained. In other words, there is no change in the idea of starting the discharge of the fire extinguishing gas early from the occurrence of the fire and shortening the discharge time. In addition, the fire extinguishing principle of other new inert gas fire extinguishing equipment is the same as that of the nitrogen fire extinguishing equipment. seconds).

In addition, in these gas-based fire extinguishing equipment, the injection head that discharges the fire extinguishing gas should be placed near the ceiling or the corner of the wall in order to make the density of the fire extinguishing gas discharged into the protected compartment as uniform as possible throughout the protected compartment. , so that a constant concentration of extinguishing gas spreads throughout the protected compartment no matter where a fire breaks out in the protected compartment.

Furthermore, as in Patent Document 1, a gas-liquid mixed fire extinguishing equipment that emits nitrogen gas and fine water spray (water particles) has been proposed, and after stopping the release of nitrogen gas, a fine water spray mixed with nitrogen gas is released. By doing so, it is said that the amount of nitrogen gas emitted can be reduced by several tens of percent compared to extinguishing with only nitrogen gas. In addition, since the gas-liquid mixing equipment emits fine water spray mixed with nitrogen gas, the fine water spray rides on the mixed high-pressure nitrogen gas and is widely released in the protected area, resulting in water particles and nitrogen gas. It is said that the fire extinguishing effect is exhibited by covering the closed space in a homogeneously mixed state, and the nitrogen effect of nitrogen gas, the cooling effect of water, and the effect of lowering the combustion oxygen concentration due to the elimination of oxygen by steam generation are synergistic. .

In addition, the fire extinguishing performance of fine water spray depends on the amount of water spray reaching the fire source, which means that water-based fire extinguishing equipment must have the water spray density necessary for extinguishing fire. It is also a matter of course.

In addition, as a fire extinguishing equipment that emits fine water spray, a fire prevention equipment (fire extinguishing equipment) that extinguishes a fire by spraying (ejecting) electrified extinguishing agent injection particles (charged water particles) from an electrified spray head is known. (Patent Document 2). According to the fire prevention equipment, the sprayed particles of the extinguishing agent discharged from the charged spray head are efficiently adsorbed to the target of the fire source by electrostatic force due to the electrification of the water particles. is known to improve.

JP 2011-072704 A JP 2009-106405 A

However, in the conventional gas-liquid mixed fire extinguishing equipment that uses nitrogen gas and fine spray water, after discharging only nitrogen gas, water mixed with nitrogen gas is finely sprayed, and the energy of the mixed high-pressure nitrogen gas is used. Nitrogen gas and fine spray of water are widely and evenly distributed in the protected compartment, but how to increase the amount of water sprinkled on the fire source has not been studied. In addition, it is avoided to release fine water sprays mixed with nitrogen gas and nitrogen gas at the same time because the fine water sprays are affected by the momentum of nitrogen gas release, and the timing at which fine water sprays can be released is limited. It is

In addition, even if an attempt is made to use conventional fire extinguishing equipment that emits charged water particles, the combination of this equipment with the discharge of nitrogen gas has not been sufficiently studied, and the discharge of charged water particles has not been protected. It is assumed that the amount of water sprinkled on the fire source may not be sufficient if the area within the protection area, which is the target area for fire extinguishing, is large because the distribution is limited to a local area within the area. Furthermore, pumping equipment is required to pressurize the water in order to discharge the charged water particles into the protected compartment, making it more difficult to solve the problem of increased costs compared to carbon dioxide fire extinguishing equipment.

The present invention suppresses the increase in equipment scale and cost, improves fire extinguishing performance, and can replace carbon dioxide fire extinguishing equipment. The purpose is to provide a fire extinguishing equipment and a fire extinguishing method that extinguishes a fire by

(Fire extinguishing equipment)
The present invention is a fire extinguishing equipment for extinguishing a fire in a partitioned protection compartment,
When a fire in the protection compartment is detected, nitrogen gas is released to the entire protection compartment and charged water particles are released toward the fire source side.

(First extinguishing control: Simultaneous release of nitrogen gas and charged water particles)
A combination of nitrogen gas and charged water particles is released into the protected compartment when a fire in the protected compartment is detected.

(Second fire extinguishing control: stop releasing nitrogen gas after simultaneous release of nitrogen gas and charged water particles)
releasing a combination of nitrogen gas and charged water particles into the protected compartment in the event of a detected fire in the protected compartment;
When a predetermined time has passed since the release of the nitrogen gas and the charged water particles, the release of the charged water particles into the protection compartment is continued and the release of the nitrogen gas into the protection compartment is stopped.

(Third fire extinguishing control: stop releasing charged water particles after simultaneous release of nitrogen gas and charged water particles)
releasing a combination of nitrogen gas and charged water particles into the protected compartment in the event of a detected fire in the protected compartment;
When a predetermined time has passed since the release of the nitrogen gas and the charged water particles, the release of the nitrogen gas into the protection compartment is continued and the release of the charged water particles into the protection compartment is stopped.

(Fourth fire extinguishing control: release of nitrogen gas and charged water particles after release of charged water particles)
releasing charged water particles into the protected compartment in the event of a detected fire in the protected compartment;
When a predetermined time has passed since the charged water particles were released, the charged water particles are continued to be released into the protection compartment and nitrogen gas is released into the protection compartment.

(Fifth fire extinguishing control: releasing nitrogen gas and charged water particles after releasing nitrogen gas)
releasing nitrogen gas into the guarded compartment in the event of a detected fire in the guarded compartment;
When a predetermined time has passed since the release of the nitrogen gas, the release of the nitrogen gas into the protected compartment is continued and the charged water particles are released into the protected compartment.

(Sixth fire extinguishing control: release of charged water particles after release of nitrogen gas)
releasing nitrogen gas into the guarded compartment in the event of a detected fire in the guarded compartment;
When a predetermined time has passed since the release of the nitrogen gas, the release of the nitrogen gas into the protection compartment is stopped and the charged water particles are released into the protection compartment.

(Seventh fire extinguishing control: release of nitrogen gas after release of charged water particles)
releasing charged water particles into the protected compartment in the event of a detected fire in the protected compartment;
When a predetermined period of time has elapsed since the charged water particles were discharged, the discharge of the charged water particles into the protective compartment is stopped and nitrogen gas is discharged into the protective compartment.

(First fire extinguishing equipment configuration)
It consists of nitrogen fire extinguishing equipment that emits nitrogen gas, charged spray fire extinguishing equipment that emits charged water particles, and a control unit,
Nitrogen fire extinguishing equipment
a nitrogen head installed in the guarded compartment for releasing nitrogen gas into the guarded compartment;
a nitrogen-filled container filled with nitrogen gas;
a nitrogen piping path having one end connected to a nitrogen head and the other end connected to a nitrogen-filled container for supplying nitrogen gas from the nitrogen-filled container to the nitrogen head;
a nitrogen on-off valve arranged in the nitrogen piping route for opening and closing a nitrogen gas supply route through the nitrogen piping route;
with
Electrified spray fire extinguishing equipment
a charged spray head installed within the guarded compartment and emitting charged water particles within the guarded compartment;
a high-voltage power supply that applies a predetermined high voltage to the charging spray head;
a water-filled container filled with water;
One end side is arranged in the water-filled container and the other end side is branched and connected to the nitrogen head side from the nitrogen on-off valve of the nitrogen piping route, and when the nitrogen on-off valve is opened, the nitrogen gas flows from the nitrogen-filled container to the water-filled container. A pressurized piping route for introducing the
a water pipe path having one end connected to the electrification spray head and the other end disposed in a water filling container for supplying water from the water filling container to the electrification spray head;
a water on-off valve arranged in the water piping route for opening and closing a water supply route through the water piping route;
with
The control unit
When releasing nitrogen gas from the nitrogen head, open the nitrogen on-off valve,
When the charged water particles are emitted from the charged spray head, the high-voltage power supply is operated and the nitrogen on-off valve and the water on-off valve are opened.

(Second fire extinguishing equipment configuration)
It consists of nitrogen fire extinguishing equipment that emits nitrogen gas, charged spray fire extinguishing equipment that emits charged water particles, and a control unit,
Nitrogen fire extinguishing equipment
a nitrogen head installed in the guarded compartment for releasing nitrogen gas into the guarded compartment;
a nitrogen-filled container filled with nitrogen gas;
a nitrogen piping path having one end connected to a nitrogen head and the other end connected to a nitrogen-filled container for supplying nitrogen gas from the nitrogen-filled container to the nitrogen head;
a first nitrogen on-off valve that is arranged in the nitrogen piping route and opens and closes a nitrogen gas supply route through the nitrogen piping route;
a second nitrogen on-off valve arranged closer to the nitrogen head than the first nitrogen on-off valve in the nitrogen piping route and opening and closing the supply route of the nitrogen gas through the nitrogen piping route;
with
Electrified spray fire extinguishing equipment
a charged spray head installed within the guarded compartment and emitting charged water particles within the guarded compartment;
a high-voltage power supply that applies a predetermined high voltage to the charging spray head;
a water-filled container filled with water;
One end side is arranged in the water filling container and the other end side is branched and connected to the nitrogen piping route between the first nitrogen on-off valve and the second nitrogen on-off valve, and nitrogen is filled when the first nitrogen on-off valve is opened. A pressurized piping route for introducing nitrogen gas from the container to the water-filled container;
a water pipe path having one end connected to the electrification spray head and the other end disposed in a water filling container for supplying water from the water filling container to the electrification spray head;
a water on-off valve arranged in the water piping route for opening and closing a water supply route through the water piping route;
with
The control unit
When releasing nitrogen gas from the nitrogen head, open the first nitrogen on-off valve and the second nitrogen on-off valve,
When discharging charged water particles from the charged spray head, the high-voltage power supply is operated and the first nitrogen on-off valve and the water on-off valve are opened.

(Fire extinguishing method)
The present invention is a fire extinguishing method for extinguishing a fire in a partitioned protective compartment, comprising:
When a fire in the protection compartment is detected, nitrogen gas is released throughout the protection compartment and charged water particles are released toward the fire source to extinguish the fire. .

(basic effect)
In the fire extinguishing equipment of the present invention, since nitrogen gas and charged water particles are released into the partitioned protection compartment, the suffocation fire extinguishing effect of reducing the oxygen concentration in the protection compartment due to the release of nitrogen gas and the evaporation It is possible to further improve fire extinguishing performance by combining the so-called cooling suffocation extinguishing effect, which lowers the temperature of the fire source by absorbing the heat of vaporization and reduces the oxygen concentration by eliminating oxygen by generating steam. do. In addition, the amount of water particles adhering to the fire source increases due to the electrostatic force of the charged water particles, so the cooling suffocation fire extinguishing effect of the water particles is greater than that of conventional fire extinguishing equipment.

In addition, the charged water particles emitted toward the fire source side (localized emission) use the release of nitrogen gas toward the entire protected area, so that the protected area to be extinguished is wide, A sufficient amount of charged water particles can be delivered to the fire source even when the location from which the charged water particles are emitted is far from the fire source. In addition, if the protected area to be extinguished is narrow, it is possible to control the discharge of nitrogen gas so that the charged water particles can reach the fire source without fail. Even in such a case, the electrostatic force of the charged water particles makes it easier for the water particles to adhere to the fire source, so the influence of the release of nitrogen gas can be reduced.

In addition, since the fire extinguishing performance is improved by the cooling suffocation fire extinguishing effect by emitting charged water particles, the amount of nitrogen gas emitted can be reduced accordingly, reducing the number and capacity of containers for filling nitrogen. As a result, storage facilities such as buildings for storing containers can be made smaller, and the possibility of installation as a substitute for existing carbon dioxide fire extinguishing equipment can be increased.

In addition, by reducing the amount of nitrogen gas released, it is possible to suppress the pressure rise in the protection compartment, which eliminates the need to provide a pressure relief port in the protection compartment, contributing to cost reduction when installing new equipment. In addition, it can easily replace the existing carbon dioxide fire extinguishing equipment without a pressure relief port.

In addition, by reducing the amount of nitrogen gas released, it is possible to suppress an increase in the nitrogen concentration in the protected compartment, and it is possible to essentially prevent accidents such as death due to suffocation.

In addition, as for the discharge of charged water particles, the suffocating effect of nitrogen gas improves the fire extinguishing performance, so it is possible to extinguish a fire with a small amount of charged water particles compared to fire extinguishing equipment that only uses charged water particles. It is possible to suppress and reduce the damage caused by loss.

(Effect of first fire extinguishing control)
In addition, when a fire is detected in the protection compartment, by releasing nitrogen gas and charged water particles together in the protection compartment, the suffocation extinguishing effect due to the release of nitrogen gas and the cooling suffocation effect due to the release of charged water particles The synergistic effect of combining the fire extinguishing effects enhances the fire extinguishing performance and makes it possible to extinguish the fire efficiently and quickly.

(Effect of Second Extinguishing Control)
In addition, when a fire is detected in the protection compartment, nitrogen gas and charged water particles are released together in the protection compartment, and when a predetermined time has passed since the release of nitrogen gas and charged water particles, protection By continuing the release of charged water particles into the compartment and stopping the release of nitrogen gas into the protected compartment, immediately after the start of fire extinguishing, the suffocation extinguishing effect due to the release of nitrogen gas and the cooling due to the release of charged water particles are achieved. The synergistic effect combined with the suffocation fire extinguishing effect enhances the fire extinguishing performance, efficiently and early reduces the scale of the fire, suppresses the combustion reaction, and after a predetermined time has passed from the start of extinguishing, discharges charged water particles. It is possible to extinguish the fire with the cooling suffocation fire extinguishing effect.

In addition, in the second fire extinguishing control, a sufficient amount of charged water particles is ensured by lengthening the discharge time of charged water particles. It can reduce the number and volume of containers for filling nitrogen, eliminate the need to provide pressure relief ports in the protected compartment, and suppress the increase in nitrogen concentration in the protected compartment. .

In addition, by making the amount of nitrogen filled in the container almost constant as the sum of the amount released into the protected compartment and the amount used to release charged water particles, the number of containers for filling nitrogen and It is possible to prevent the capacity from increasing. The same effect applies to the following third to seventh fire extinguishing controls.

(Effect of the third fire extinguishing control)
In addition, when a fire is detected in the protection compartment, nitrogen gas and charged water particles are released together in the protection compartment, and when a predetermined time has passed since the release of nitrogen gas and charged water particles, protection By continuing to release nitrogen gas into the compartment and stopping the release of charged water particles into the protected compartment, immediately after the start of fire extinguishing, the suffocating fire extinguishing effect due to the release of nitrogen gas and the cooling due to the release of charged water particles are achieved. The synergistic effect combined with the suffocation extinguishing effect enhances the extinguishing performance, efficiently and early reduces the scale of the fire and suppresses the combustion reaction, and after a predetermined time has passed since the extinguishing started, suffocation occurs due to the release of nitrogen gas. It is possible to extinguish the fire with the fire extinguishing effect.

In addition, in the third fire extinguishing control, a sufficient amount of nitrogen gas is ensured by lengthening the nitrogen gas release time. can be reduced, and there is a remarkable effect in suppressing and reducing damage caused by water damage.

(Effect of fourth fire extinguishing control)
In addition, when a fire in the protection compartment is detected, charged water particles are released into the protection compartment, and when a predetermined time has passed since the release of charged water particles, the release of charged water particles into the protection compartment is stopped. By continuing to release nitrogen gas into the protected compartment, immediately after the start of extinguishing, the charged water particles are delivered to the fire source without being affected by the release of nitrogen gas. This reduces the scale of the fire efficiently and early, and after a predetermined time has passed since the start of extinguishing, the synergistic effect of combining the suffocating extinguishing effect by releasing nitrogen gas and the cooling suffocating extinguishing effect by releasing charged water particles. To extinguish a fire by enhancing fire extinguishing performance.

In addition, in the fourth fire extinguishing control, a sufficient amount of charged water particles is ensured by lengthening the discharge time of charged water particles. It can reduce the number and volume of containers for filling nitrogen, eliminate the need to provide pressure relief ports in the protected compartment, and suppress the increase in nitrogen concentration in the protected compartment. .

(Effect of Fifth Extinguishing Control)
In addition, when a fire is detected in the protection compartment, nitrogen gas is released into the protection compartment, and when a predetermined time has passed since the release of nitrogen gas, nitrogen gas is continued to be released into the protection compartment. By releasing charged water particles into the protected compartment, immediately after the start of fire extinguishing, the suffocating fire extinguishing effect of nitrogen gas suppresses the combustion reaction efficiently and early. The synergistic effect of combining the suffocating fire extinguishing effect by releasing gas and the cooling suffocating fire extinguishing effect by releasing charged water particles enhances the fire extinguishing performance and makes it possible to extinguish the fire.

In addition, in the fifth fire extinguishing control, a sufficient amount of nitrogen gas is ensured by lengthening the nitrogen gas release time. can be reduced, and there is a remarkable effect in suppressing and reducing damage caused by water damage.

(Effect of sixth fire extinguishing control)
In addition, when a fire is detected in the protection compartment, nitrogen gas is released into the protection compartment, and when a predetermined time has passed since the release of nitrogen gas, the release of nitrogen gas into the protection compartment is stopped. By releasing charged water particles into the protected compartment, immediately after the start of fire extinguishing, the suffocating fire extinguishing effect of nitrogen gas suppresses the combustion reaction efficiently and early. The charged water particles are delivered to the fire source without being affected by the release of gas, and the fire can be extinguished by the cooling suffocation extinguishing effect due to the release of the charged water particles.

(Effect of seventh fire extinguishing control)
In addition, when a fire in the protection compartment is detected, charged water particles are released into the protection compartment, and when a predetermined time has passed since the release of charged water particles, the release of charged water particles into the protection compartment is stopped. By releasing nitrogen gas into the protected area when the fire is stopped, immediately after the start of extinguishing the fire, the scale of the fire can be efficiently and quickly controlled by the cooling suffocation effect of the charged water particles without being affected by the release of nitrogen gas. After a predetermined time has passed from the start of fire extinguishing, the fire can be extinguished by the suffocating fire extinguishing effect due to the release of nitrogen gas.

(Effect of first fire extinguishing equipment configuration)
By adopting the first fire extinguishing equipment configuration, it is possible to realize the first fire extinguishing control and the third fire extinguishing control. In addition, in the conventional electrostatic spray fire extinguishing equipment, it was necessary to continuously operate the pump to pressurize the water filled in the water filled container, but in the present invention, the nitrogen filled container is Since the water filled in the water filling container can be pressurized by using the filled nitrogen gas, there is no need for a pump or a power supply system for operating the pump, and the required capacity of the emergency power supply can be greatly reduced. It is possible to reduce the scale and cost of fire extinguishing equipment.

(Effect of Second Fire Extinguishing Equipment Configuration)
By adopting the second fire extinguishing equipment configuration, it is possible to implement all of the first to seventh fire extinguishing controls. Also in this case, since the water filled in the water-filled container can be pressurized by using the nitrogen gas filled in the nitrogen-filled container, a pump and a power supply system for operating the pump are not required. Since the required capacity of the emergency power supply can be greatly reduced, it is possible to reduce the scale and cost of the fire extinguishing equipment.

(Effect of extinguishing method)
Since the effect of the fire extinguishing method according to the present invention is the same as the effect of the fire extinguishing equipment described above, the description thereof will be omitted.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which showed 1st Embodiment of the fire extinguishing equipment. It is an explanatory view showing an embodiment of an electrification spray head. It is explanatory drawing which showed embodiment of the high voltage power supply part with the charging spray head. It is the flow figure which showed the 1st fire extinguishing control by 1st Embodiment of the fire extinguishing equipment. It is explanatory drawing which showed 2nd Embodiment of the fire extinguishing equipment. 4 is a time chart showing discharge of nitrogen gas and charged water particles by first to seventh fire extinguishing controls; It is the flow figure which showed the 2nd fire-extinguishing control by 2nd Embodiment of the fire-extinguishing equipment. It is the flow figure which showed the 3rd fire-extinguishing control by 2nd Embodiment of the fire-extinguishing equipment. It is the flow figure which showed the 4th fire-extinguishing control by 2nd Embodiment of the fire-extinguishing equipment. It is the flow figure which showed the 5th fire extinguishing control by 2nd Embodiment of the fire extinguishing equipment. It is a flow figure showing the 6th fire-extinguishing control by a 2nd embodiment of fire-extinguishing equipment. It is the flow figure which showed the 7th fire extinguishing control by 2nd Embodiment of the fire extinguishing equipment.

EMBODIMENT OF THE INVENTION Below, embodiment of the fire-extinguishing equipment which concerns on this invention, and a fire-extinguishing method is described in detail based on drawing. In addition, this invention is not limited by the following embodiments.

[Basic concept of the embodiment]
First, the basic concept of the embodiment will be explained. Embodiments relate to fire fighting equipment for extinguishing fires in generally partitioned guard compartments.

Here, "divided protection compartment" means a space partitioned by the floor, walls, ceiling, roof, etc. of a building, and is not limited to the one where the inside of the protection compartment is completely sealed. It is a concept that includes partitions to the extent that the released nitrogen gas and charged water particles can be retained within the protective compartment and the fire extinguishing effect can be exhibited by the release of the nitrogen gas and charged water particles.

In addition, the "fire extinguishing equipment" of this embodiment, when a fire is detected in the protection compartment, releases nitrogen gas toward the entire protection compartment and discharges charged water particles toward the fire source side. It is a controlled release.

Here, "release of charged water particles toward the fire source side" refers to the release of charged water particles toward a position or object that is assumed to become a fire source in the event of a fire. This includes the release of charged water particles towards the floor or other potential fire sources in protected compartments.

In addition, in the present embodiment, as fire extinguishing control performed by releasing nitrogen gas and charged water particles, there are first to seventh extinguishing controls.

A first fire extinguishing control is to release a combination of nitrogen gas and charged water particles into the guarded compartment when a fire in the guarded compartment is detected. Here, the term “release together” is not limited to the fact that the time when the nitrogen gas starts to be released and the time when the charged water particles start to be released are completely coincident. It is sufficient that the release time of the nitrogen gas and the release time of the charged water particles overlap so that a synergistic effect combining the effects can be exhibited. This is the same for the second fire extinguishing control and the third fire extinguishing control.

The second fire extinguishing control releases nitrogen gas and charged water particles together into the protected compartment when a fire in the protected compartment is detected, and a predetermined time elapses after the release of the nitrogen gas and charged water particles. When this occurs, the discharge of charged water particles into the protected compartment is continued and the discharge of nitrogen gas into the protected compartment is stopped. In other words, immediately after the start of extinguishing, the synergistic effect of combining the suffocating extinguishing effect of nitrogen gas release and the cooling suffocating extinguishing effect of releasing charged water particles efficiently and early reduces the scale of the fire and suppresses the combustion reaction. However, after a certain amount of time has passed since the start of the fire extinguishing, it is possible to extinguish the fire with the cooling suffocation effect of the discharge of charged water particles. As a result, it is possible to reduce the amount of nitrogen gas released by shortening the release time of nitrogen gas. , it is remarkably effective in suppressing an increase in the nitrogen concentration in the protected compartment.

A third fire extinguishing control releases a combination of nitrogen gas and charged water particles into the guarded compartment when a fire in the guarded compartment is detected, and releases nitrogen gas and charged water particles into the guarded compartment. When a predetermined period of time has elapsed since then, the release of nitrogen gas into the protective compartment is continued and the release of charged water particles is stopped. In other words, immediately after the start of extinguishing, the synergistic effect of combining the suffocating extinguishing effect of nitrogen gas release and the cooling suffocating extinguishing effect of releasing charged water particles efficiently and early reduces the scale of the fire and suppresses the combustion reaction. However, after a predetermined time has passed since the start of fire extinguishing, the fire can be extinguished by the suffocation extinguishing effect of nitrogen gas release, and by extending the nitrogen gas release time, a sufficient amount of nitrogen gas can be released, and charged water can be extinguished. Since the release time of particles can be shortened and the amount of charged water particles released can be reduced, there is a remarkable effect in suppressing and reducing damage caused by water damage.

The fourth fire extinguishing control discharges charged water particles into the protection compartment when a fire in the protection compartment is detected, and charges the inside of the protection compartment when a predetermined time elapses from the release of the charged water particles. It continues to release water particles and releases nitrogen gas into the protected compartment. In other words, immediately after the start of extinguishing, the charged water particles are delivered to the fire source without being affected by the release of nitrogen gas. , After a predetermined time has passed since the start of fire extinguishing, the synergistic effect of combining the suffocating extinguishing effect by releasing nitrogen gas and the cooling suffocating extinguishing effect by releasing charged water particles makes it possible to extinguish the fire, and the discharge time of charged water particles is lengthened. As a result, it is possible to secure a sufficient amount of charged water particles released, shorten the nitrogen gas release time, and reduce the amount of nitrogen gas released. Remarkable effects are produced in terms of reduction, the necessity of providing a pressure relief port in the protection compartment, and suppression of the increase in the nitrogen concentration in the protection compartment.

The fifth fire extinguishing control releases nitrogen gas into the protection compartment when a fire is detected in the protection compartment, and releases nitrogen gas into the protection compartment when a predetermined time has passed since the nitrogen gas was released. It continues the release and releases charged water particles into the protected compartment. In other words, immediately after the start of fire extinguishing, the suffocating fire extinguishing effect due to the release of nitrogen gas efficiently and early suppresses the combustion reaction, and after a predetermined time has passed from the start of extinguishing, the suffocating fire extinguishing effect due to the release of nitrogen gas and electrification Fire extinguishing is made possible by the synergistic effect of combining the cooling suffocation extinguishing effect by releasing water particles, and by extending the nitrogen gas release time, a sufficient amount of nitrogen gas is secured and the charged water particle release time is shortened. In addition, since the amount of discharged charged water particles can be reduced, there is a remarkable effect in suppressing and reducing damage caused by water damage.

The sixth fire extinguishing control releases nitrogen gas into the protection compartment when a fire is detected in the protection compartment, and releases nitrogen gas into the protection compartment when a predetermined time has passed since the nitrogen gas was released. It stops the release and releases charged water particles into the protected compartment. In other words, immediately after the start of extinguishing, the suffocation extinguishing effect of nitrogen gas efficiently and early suppresses the combustion reaction, and after a predetermined time has passed since the start of extinguishing, the fire source is not affected by the release of nitrogen gas. The charged water particles are delivered to the area, and the fire can be extinguished by the cooling suffocation fire extinguishing effect due to the release of the charged water particles.

The seventh fire extinguishing control discharges charged water particles into the protection compartment when a fire in the protection compartment is detected, and charges the inside of the protection compartment when a predetermined time elapses from the release of the charged water particles. It stops the release of water particles and releases nitrogen gas into the protected compartment. In other words, immediately after the start of extinguishing, the charged water particles are delivered to the fire source without being affected by the release of nitrogen gas. After a predetermined time has passed since the start, the fire can be extinguished by the suffocation fire extinguishing effect due to the release of nitrogen gas.

In addition, for all fire extinguishing control, the release time of nitrogen gas and the release time of charged water particles are arbitrary, and when only charged water particles are released while considering the size of the protection compartment and the space where fire extinguishing equipment can be installed, etc. The amount of nitrogen gas released that can reduce the amount of charged water particles released than the amount of charged water particles required for fire extinguishing, and the amount of nitrogen gas required for fire extinguishing when only nitrogen gas is released The amount of charged water particles that can reduce the amount of nitrogen gas emitted is determined to be releasable.

Moreover, there exist a 1st fire-extinguishing-equipment structure and a 2nd fire-extinguishing-equipment structure as a structure of fire-extinguishing equipment. The "first fire extinguishing equipment configuration" is a configuration for realizing the first fire extinguishing control and the third fire extinguishing control, and the "second fire extinguishing equipment configuration" is the first fire extinguishing control to the seventh fire extinguishing control. It is a configuration for realizing control, and both fire extinguishing equipment configurations are composed of nitrogen fire extinguishing equipment, electrified spray fire extinguishing equipment, and a control unit.

First of all, the "nitrogen fire extinguishing equipment" discharges nitrogen gas into the protected compartment to extinguish the fire, and performs suffocation fire extinguishing by reducing the oxygen concentration in the protected compartment by releasing nitrogen gas. In addition, the first fire extinguishing equipment configuration includes a nitrogen head, a nitrogen filling container, a nitrogen piping route and a nitrogen release valve, and the second fire extinguishing equipment configuration includes a nitrogen head, a nitrogen filling container , a nitrogen piping route, a first nitrogen release valve and a second nitrogen release valve.

Here, the "nitrogen head" is installed in the protective compartment and emits nitrogen gas, and the number and type of installed heads are arbitrary, and includes, for example, "nitrogen nozzles".

In addition, "nitrogen-filled container" is a container filled with nitrogen gas, and the number, capacity, type, etc. of the container are arbitrary. It is determined as appropriate.

In addition, the “nitrogen piping route” is a route having one end connected to a nitrogen head and the other end connected to a nitrogen-filled container for supplying nitrogen gas from the nitrogen-filled container to the nitrogen head. The structure, type, etc. of the piping are arbitrary as long as the nitrogen can be supplied from the nitrogen-filled container to the nitrogen head.

In addition, the "nitrogen release valve" is placed in the nitrogen pipe route and opens and closes the nitrogen gas supply route through the nitrogen pipe route.If it can open and close the nitrogen gas supply route, its structure and type is arbitrary, but includes, for example, a remotely controllable solenoid valve or the like. In addition, in the second fire extinguishing equipment configuration, by providing the "first nitrogen release valve" and the "second nitrogen release valve", all fire extinguishing from the first fire extinguishing control to the seventh fire extinguishing control It allows control.

Next, “charged spray fire extinguishing equipment” is a system that extinguishes fires by discharging charged water particles into a protected compartment. The temperature is lowered by absorbing the heat of vaporization, and the concentration of oxygen is reduced by removing oxygen due to the generation of water vapor. Both the first fire extinguishing equipment configuration and the second fire extinguishing equipment configuration are provided with an electrostatic spray head, a high-voltage power supply, a water-filled container, a pressurized piping route, a water piping route, and a water release valve.

Here, the “charged spray head” is installed in the protection compartment and emits charged water particles, and the number and type of installed are arbitrary, and includes “charged spray nozzles”.

In addition, the term “charged water particles” refers to charged water particles emitted from the charging spray head. For example, the water particles are charged by applying a predetermined voltage between two electrodes of the charging spray head. More specifically, water particles charged by an induction charging method are passed through a high electric field generated by a predetermined high voltage applied from a high-voltage power supply to the charging spray head. In addition, "charged water particles" is a concept including "charged spray", "charged fine spray", "charged water fine spray" and the like.

Further, the "high voltage power supply section" applies a predetermined high voltage to the charging spray head, and the "predetermined high voltage" includes a voltage capable of charging water particles. If so, the voltage range and type are arbitrary, and include, for example, DC voltage, AC voltage, pulse voltage, and the like.

In addition, "water-filled container" is a container that is filled with water, and the number, capacity, type, etc. of the container are arbitrary. It is determined. In addition, the water to be filled is not limited to water only, as long as it contains water components. For example, in order to improve the fire extinguishing effect, water containing fire extinguishing agent. can be

In addition, the "pressure piping route" is a route for introducing nitrogen gas from the nitrogen-filled container to the water-filled container, and if nitrogen gas can be introduced from the nitrogen-filled container to the water-filled container, The structure, type, etc. of the piping are arbitrary.

In addition, the "water piping route" is a route having one end connected to the electrification spray head and the other end arranged in a water-filled container for supplying water from the water-filled container to the electrification spray head. can be supplied from the water-filled container to the charging spray head, the structure, type, etc. of the piping are arbitrary.

A "water release valve" is a valve that is placed in a water piping route and opens and closes the water supply route through the water piping route. However, it also includes, for example, a remotely controllable solenoid valve or the like.

In addition, the “control unit” controls the nitrogen fire extinguishing equipment to release nitrogen gas from the nitrogen head when a fire is detected in the protected compartment, and controls the electrostatic spray fire extinguishing equipment to emit nitrogen gas from the electrostatic spray head. It performs control to release charged water particles, thereby performing the first to seventh fire extinguishing controls.

Specific embodiments will be described below. In the specific embodiments shown below, the “divided protection compartment” is the “protection compartment of the building”, the “first fire extinguishing equipment configuration” is the “first embodiment of the fire extinguishing equipment”, and the “second The fire extinguishing equipment configuration of "2" is referred to as the "second embodiment of the fire extinguishing equipment".

[Specific contents of the embodiment]
Specific contents of the embodiment will be described separately as follows.
a. First Embodiment of Fire Extinguishing Equipment a1. Nitrogen fire extinguishing equipment a2. Electric spray fire extinguishing equipment a3. Charge spray head a4. High-voltage power supply a5. control board b. first fire extinguishing control c. Second embodiment of fire extinguishing equipment d. Second extinguishing control e. Third extinguishing control f. fourth extinguishing control g. fifth extinguishing control h. Sixth Extinguishing Control i. Seventh extinguishing control j. Modification of the present invention

[a. First Embodiment of Fire Extinguishing Equipment]
A first embodiment of the fire extinguishing equipment will be described in more detail. In the description, reference is made to FIG. 1 showing a first embodiment of a fire extinguishing system.

As shown in FIG. 1, in a protection section 10 of a building, for example, two nitrogen heads 12 of the nitrogen fire extinguishing system and two electrified spray heads 14 of the electrified spray fire extinguishing system are installed.

(a1. Nitrogen fire extinguishing equipment)
Nitrogen fire extinguishing equipment will be described in more detail. The nitrogen fire extinguishing equipment provided in this embodiment comprises a nitrogen head 12 , a nitrogen filling container 20 , a nitrogen supply pipe 24 and a nitrogen on-off valve 30 .

The nitrogen head 12 discharges nitrogen gas into the protection compartment 10 in the event of a fire. is released throughout the protected compartment 10 to evenly distribute the released nitrogen gas throughout the protected compartment 10 .

The nitrogen-filled container 20 is filled with nitrogen gas in a pressurized state of, for example, 30 MPa, and is filled with the necessary amount of nitrogen gas to reduce the oxygen concentration in the protective compartment 10 to the fire-fighting concentration or less. In the embodiment, since fire extinguishing by discharging charged water particles from the charged spray fire extinguishing equipment is combined with fire extinguishing by discharging nitrogen gas, the amount of nitrogen gas filled in the nitrogen filled container 20 is only nitrogen gas The amount of charge is less than that required to extinguish the fire by releasing, for example, half that amount.

A nitrogen supply line 24 forms a nitrogen line path, one end of which is connected to the nitrogen head 12 located within the guarded compartment 10 and the other end of which is connected to a nitrogen fill located at a storage facility outside the guarded compartment 10. It is connected to the container 20 and supplies nitrogen gas from the nitrogen filling container 20 to the nitrogen head 12 .

The nitrogen on-off valve 30 is arranged on the nitrogen supply pipe 24 on the side of the nitrogen-filled container 20, and is a valve that opens and closes the supply path of nitrogen gas from the nitrogen-filled container 20 to the nitrogen head 12, and its structure and type are arbitrary. However, for example, a remotely controllable solenoid valve or the like is used. In this embodiment, the nitrogen on-off valve 30 is opened or closed in response to a control signal from the control panel 34, and the nitrogen on-off valve 30 is normally closed.

(a2. Electrostatic spray fire extinguishing equipment)
The electrostatic spray fire extinguishing equipment will be described in more detail. The electrified spray fire extinguishing equipment provided in this embodiment is composed of the electrified spray head 14, the water filling container 22, the water supply pipe 26, the pressure pipe 28, the water on-off valve 32, the high voltage power supply unit 38, and the high voltage cable 40. .

The charged spray head 14 emits charged water particles into the protective compartment 10 when a fire occurs. Utilizing the nitrogen gas emitted throughout the guarded compartment 10 from the nitrogen head 12 allows the water particles to be uniformly distributed throughout the guarded compartment 10 .

The water filling container 22 is filled with water to be supplied to the charging spray head 14, and the amount of water filled is arbitrary. Sufficient to release water particles. In addition, in this embodiment, fire extinguishing by discharging nitrogen gas from the nitrogen fire extinguishing equipment is performed in combination with extinguishing by discharging charged water particles. This is less than the charge required to extinguish a fire by releasing particles only.

The water supply line 26 forms a water line path, one end of which is connected to the charged spray head 14 located in the guarded compartment 10 and the other end of which is a filling container located in a storage facility outside the guarded compartment 10. 22 , and water is supplied from the water-filled container 22 to the charging spray head 14 .

The pressurization pipe 28 forms a pressurization pipe route, one end of which is drawn into the water-filled container 22, and is arranged so as to be positioned in the space above the water filling the water-filled container 22, The other end is branched and connected to the nitrogen head 12 side from the nitrogen on-off valve 30 of the nitrogen supply pipe 24 . Therefore, when the nitrogen on-off valve 30 opens, nitrogen gas is introduced from the nitrogen-filled container 20 through the pressurizing pipe 28 into the upper space of the water-filled container 22 and filled in the water-filled container 22. Since the introduction of nitrogen gas from the nitrogen-filled container 20 to the water-filled container 22 functions in the same way as pressurization by a pump, the pump equipment of conventional electrostatic spray fire extinguishing equipment is unnecessary. .

The water opening/closing valve 32 is arranged on the water filling container 22 side of the water supply pipe 26, and is a valve that opens and closes the water supply path from the water filling container 22 to the charging spray head 14, and its structure and type are arbitrary. However, for example, a remotely controllable solenoid valve or the like is used. In this embodiment, the water on-off valve 32 is opened or closed by a control signal from the control panel 34, and is normally closed.

(a3. Electrostatic spray head)
The charging spray head of the charging spray fire extinguishing equipment will be described in more detail. The description refers to FIG. 2 showing the electrified spray head taken out. In addition, FIG. 2(A) shows the perspective view which looked at the charge spray head from the discharge side, and FIG. 2(B) shows sectional drawing which looked at it from the side.

As shown in FIG. 2, the charged spray head 14 emits charged water particles, and its configuration and structure are arbitrary. It is composed of a portion 60 , a water side electrode portion 62 and a water supply connection portion 64 . The body 54, the spray nozzle portion 56, the electrode holding portion 58 and the water supply connection portion 64 are made of an insulating material.

A through hole is formed inside the body 54 in the direction of the spray axis 55 , and a conductive water-side electrode portion 62 is fitted from the lower side (discharge side) of the body 54 . The water supply connection portion 64 is fitted, and the ground cable of the high-voltage cable is connected from the outside to the electrode connection portion 62a of the water side electrode portion 62 . Also, pressurized water is supplied to the water supply connection portion 64 . A spray nozzle portion 56 is provided below the water-side electrode portion 62, and emits water particles having an average particle diameter of about 100 to 300 μm, for example.

A ring-shaped induction electrode portion 60 is arranged by an electrode holding portion 58 in an open space below the spray nozzle portion 56 . Although the configuration and structure of the induction electrode portion 60 are arbitrary, for example, the induction electrode portion 60 is formed by insulating and covering a conductive electrode core material. A voltage application cable of a high-voltage cable is connected from the outside to the cable connection portion 60a of the induction electrode portion 60 .

Between the induction electrode portion 60 and the water-side electrode portion 62, a predetermined adjustment range (for example, 0.5 kV to A predetermined voltage (for example, a DC voltage of 10 kV) regulated within 20 kV is applied. Due to this applied voltage, a predetermined external electric field is formed around the ring portion of the induction electrode portion 60, and water particles emitted from the spray nozzle portion 56 by induction charging pass through the ring portion of the induction electrode portion 60. charged.

Here, the predetermined adjustment range may include a voltage range in which the water particles cannot be charged, and it is sufficient if the voltage can be adjusted to a predetermined voltage in which the water particles can be charged. Also, the polarity (plus/minus) of the applied voltage is switched by the high-voltage power supply section 38 .

The water particles are charged by the charging spray head 14, for example, when the water side electrode portion 62 is set at a reference potential (ground potential, 0 V) and a predetermined DC voltage is applied so that the potential of the induction electrode portion 60 is positive. Water particles emitted from 56 are negatively charged. When a predetermined DC voltage is applied so that the potential of the induction electrode portion 60 becomes negative with the water side electrode portion 62 as a reference potential (earth potential, 0 V), the water particles discharged from the spray nozzle portion 56 become positive. charged. Further, when the absolute value of the voltage applied between the induction electrode portion 60 and the water side electrode portion 62 is set within a range of, for example, 0.5 kV to 20 kV, the occurrence of spark discharge is prevented, and charging is performed while ensuring safety. A spray stream of water particles is generated.

The configuration and structure of the charging spray head 14 are arbitrary, and are not limited to those shown in FIG. includes.

(a4. High voltage power supply unit)
The high voltage power supply section 38 will be described in more detail. In the description, reference is made to FIG. 3, which shows an embodiment of the high voltage power supply together with the charged spray head.

The high-voltage power supply unit 38 supplies a high voltage through a high-voltage cable 40 for generating charged water particles in the charging spray head 14, and its configuration and functions are arbitrary. , a high voltage variable circuit 42 functioning as a voltage adjusting section, and a polarity reversing circuit 44 functioning as a polarity switching section. Also, in FIG. 3, the high voltage cable 40 has a voltage application cable 40a connected to the induction electrode portion 60 side, and a ground cable 40b connected to the water side electrode portion 62 side.

A voltage application cable 40a from the high-voltage power supply unit 38 branches for each electrification spray head 14, is connected to the induction electrode unit 60 of each electrification spray head 14 via a current limiting resistor 46, and is connected to the water side electrode of each electrification spray head 14. The portion 62 side is connected in common, and the earth cable 40b from the high-voltage power supply portion 38 is connected to it, so that when a high voltage is applied between the induction electrode portion 60 and the water side electrode portion 62, the charging spray head 14 charges the water particles emitted from the Here, the voltage application cable 40a and the ground cable 40b use withstand voltage cables with high insulation. When only DC voltage is applied, the cable on the positive electrode side is used as a withstand voltage cable, and the cable on the negative electrode side is a normal low voltage cable. It can also be used as a cable.

The high voltage variable circuit 42 adjusts the voltage applied between the induction electrode section 60 and the water side electrode section 62 in response to a control signal from the control panel 34 . It can emit charged water particles with a charge amount suitable for extinguishing fires. In addition, by using charged water particles with a reduced amount of charge by lowering the absolute value of the applied voltage, discharge accidents that may occur due to an increase in the amount of charge due to the charged water particles for extinguishing objects that are easily charged can be prevented. It makes it possible to prevent it from happening.

The polarity reversing circuit 44 switches the polarity of the voltage applied between the induction electrode section 60 and the water side electrode section 62 in accordance with a control signal from the control panel 34 , thereby discharging from the charging spray head 14 . It is possible to switch the charged polarity of the charged water particles to the positive polarity or the negative polarity, and release the charged water particles with the charged polarity suitable for extinguishing the fire. For example, a higher fire-extinguishing effect can be expected by emitting a charged water particle airflow containing charged water particles having a polarity opposite to that of an object to be extinguished.

(a5. Control panel)
The control board 34 will be explained in more detail. When a fire breaks out in the protection section 10, the control panel 34 controls the nitrogen fire extinguishing equipment to release nitrogen gas from the nitrogen head 12, and controls the charged spray fire extinguishing equipment to discharge charged water from the charged spray head 14. It extinguishes fires by emitting particles. Also, the control panel 34 is set to an automatic mode or a manual mode.

As shown in FIG. 1, an operation box 36 is installed outside the protection section 10, and the operation box 36 is connected to the control panel 34 by a signal line. The operation box 36 is provided with a start switch (not shown) and a door (not shown) for protecting the start switch.

When the start switch of the operation box 36 is operated, the control panel 34 activates a discharge indicator light (not shown) installed near the entrance outside the protection compartment 10, causing nitrogen gas and nitrogen gas to enter the protection compartment 10. It indicates that charged water particles are being emitted, and informs people not to enter the protected compartment 10.例文帳に追加In addition, the control panel 34 causes a speaker (not shown) installed in the protection compartment 10 to output a gas emission alarm sound including a caution alarm and an evacuation alarm indicating that nitrogen gas and charged water particles are being emitted. , prompting immediate evacuation if a person is present in the protected area 10;

A fire sensor is installed in the protection compartment 10 to monitor fires. Although the number, functions and types of fire sensors are arbitrary, for example, a smoke sensor 16 and a heat sensor 18 are arranged and connected to sensor lines from the control panel 34 respectively.

When the automatic mode is set, the control panel 34 detects a fire by both the smoke sensor 16 and the heat sensor 18 and issues an alarm. 16 and heat sensor 18, it is determined that a fire has occurred and the fire extinguishing start condition has been met, and a countdown of a predetermined time is started, and nitrogen is emitted from the speaker. A caution alarm and a gas emission alarm sound for an evacuation alarm are output to indicate that gas and charged water particles are being emitted. The alarm signal from the smoke sensor 16 is transferred to a separately provided receiver of fire alarm equipment, and the receiver outputs a fire alarm.

When the control panel 34 finishes the countdown, the nitrogen fire extinguishing equipment is controlled to emit nitrogen gas from the nitrogen head 12, and the charged spray fire extinguishing equipment is controlled to emit charged water particles from the charged spray head 14. Fire extinguishing control. is done.

The control panel 34 and the operation box 36 are provided with, for example, a two-digit 7-segment display. When the countdown starts, the remaining seconds are displayed sequentially, and when the countdown ends, zero seconds is displayed.

Also, when the control panel 34 is set to the manual mode, the observer detects a fire in the protection section 10 visually or from the fire alarm triggered by the smoke detector 16, and installs it outside the protection section 10. A start signal is transmitted to the control panel 34 by pushing the start switch of the operation box 36 which is provided.

Upon receiving the activation signal from the operation box 36, the control panel 34 determines that there is a fire and determines that the fire extinguishing activation conditions have been met. A caution alarm and evacuation alarm indicating the release of nitrogen gas and charged water particles are output, and when the countdown ends, the nitrogen fire extinguishing equipment is controlled to release nitrogen gas from the nitrogen head 12, Fire extinguishing control is performed by controlling the charging spray equipment and discharging charged water particles from the charging spray head 14 .

[b. First fire extinguishing control]
The first fire extinguishing control performed by the control panel 34 provided in the first embodiment of the fire extinguishing equipment shown in FIG. 1 will be described in more detail. In the description, FIG. 4 showing an example of the flow of the first fire extinguishing control by the fire extinguishing equipment of FIG. 1 will be referred to.

The first fire extinguishing control by the control panel 34 is to release a combination of nitrogen gas and charged water particles into the protected compartment when a fire in the protected compartment is detected. Details are as follows. Become.

As shown in FIG. 4, when a fire breaks out in the protected section 10 of FIG. 1 (S1) and the smoke sensor 16 detects smoke from the fire, the smoke sensor 16 issues a fire alarm (S2). When the heat sensor 18 receives a hot airflow caused by a fire, the heat sensor 18 issues a fire alarm (S3), and the person in charge discovers the fire from the fire alarm associated with the fire alarm of the smoke sensor 16. Activation operation of the operation box 36 is performed (S4). Then, the control panel 34 receives a fire alarm signal from the smoke sensor 16 that has detected smoke due to a fire, a fire alarm signal from the heat sensor 18 that has received hot air flow due to a fire, and a fire alarm signal from the operation box 36 that has been activated. start signals are received (S5).

When the control panel 34 is set to the automatic mode, for example, when a fire alarm signal is received from two lines of the smoke sensor 16 and the heat sensor 18, it is determined that there is a fire, and it is determined that the extinguishing start condition is met. It judges (S6). Further, when the control panel 34 is set to the manual mode, it determines that there is a fire when a start signal is received from the operation box 36, and determines that the extinguishing start conditions are satisfied (S6).

When the control panel 34 concludes that there is a fire and judges that the fire extinguishing start condition is satisfied, it opens the nitrogen on-off valve 30 (S7). When the nitrogen on-off valve 30 is opened, nitrogen gas is supplied from the nitrogen filling container 20 through the nitrogen supply pipe 24 to the nitrogen head 12 and discharged into the protection compartment 10 . Further, when the nitrogen on-off valve 30 is opened, nitrogen gas is introduced from the nitrogen-filled container 20 into the water-filled container 22 through the pressure pipe 28, and the water filled in the water-filled container 22 is added. pressure.

Subsequently, the control panel 34 operates the high-voltage power supply unit 38 to apply a predetermined high voltage to the electrified spray head 14 (S8), and opens the water valve 32 (S9), thereby closing the pressurized pipe 28. Water pressurized by the introduction of nitrogen gas is supplied from the water-filled container 22 to the charging spray head 14 via the water supply pipe 26, and the charging spray head 14 charges the water particles, and the water particles are charged into the protective compartment 10. emit charged water particles.

As a result, since the charging spray head 14 starts discharging the charged water particles without leaving a gap from the start of the nitrogen gas discharge from the nitrogen head 12, the nitrogen gas and the charged water particles are discharged together. (S10). The discharge of nitrogen gas from the nitrogen head 12 ends after a predetermined time, for example, 1 to 2 minutes.

For this reason, the suffocation fire extinguishing effect of reducing the oxygen concentration due to the release of nitrogen gas, and the cooling suffocation extinguishing effect due to the reduction in oxygen concentration due to the reduction in temperature due to the absorption of evaporation heat due to the release of charged water particles and the elimination of oxygen due to the generation of water vapor. It is possible to obtain a high fire extinguishing effect by the synergistic effect of combining

In addition, since the water particles released are charged, even if there are obstacles around the fire source, the charged water particles will be attracted to the fire source by electrostatic force, so the fire source will not be hindered by obstacles. The arrival amount of charged water particles can be increased. In addition, since the charged water particles are released in accordance with the release of nitrogen gas released throughout the protective compartment 10, even if the position of the fire source is far from the charged spray head 14, the charged water particles can reach the fire source. can be reached. In addition, even if the discharge of the charged water particles from the charged spray head 14 reaches a sufficient distance to the fire source, the electrostatic force of the charged water particles attracts the water particles to the fire source. It is less susceptible to the nitrogen gas released into the fire source, and allows the charged water particles to reach the fire source.

In addition, since a high fire extinguishing effect is obtained by combining the suffocating fire extinguishing effect by releasing nitrogen gas and the cooling suffocating fire extinguishing effect by releasing charged water particles, a high fire extinguishing effect is obtained. can be suppressed. In addition, by realizing the function of the pump equipment for pressurizing the water filled in the water filling container 22 by introducing the nitrogen gas from the nitrogen filling container 20, the pump equipment and the power supply system required for the pump equipment are unnecessary. Equipment scale can be reduced. As a result, the necessary equipment scale and equipment cost can be reduced as compared with the conventional nitrogen fire extinguishing equipment, and the possibility of installing the nitrogen fire extinguishing equipment as an alternative to the carbon dioxide fire extinguishing equipment can be increased.

In addition, since the amount of nitrogen gas released can be reduced compared to the conventional fire extinguishing equipment using nitrogen gas, the pressurization of the protective section 10 due to the release of nitrogen gas is reduced, and a pressure relief port is installed in the protective section 10. Since it is not necessary to do so, the equipment cost can be reduced compared to the conventional fire extinguishing equipment using nitrogen gas, and the possibility of installing nitrogen fire extinguishing equipment as an alternative to carbon dioxide fire extinguishing equipment can be further increased.

[c. Second Embodiment of Fire Extinguishing Equipment]
A second embodiment of the fire extinguishing equipment will be described in more detail. In the description, reference is made to FIG. 5 showing a second embodiment of the fire extinguishing equipment.

As shown in FIG. 5, two nitrogen heads 12 of the nitrogen fire extinguishing system and two electrified spray heads 14 of the electrified spray fire extinguishing system are installed in the protection section 10 of the building.

The nitrogen fire extinguishing equipment of this embodiment is composed of a nitrogen head 12, a nitrogen filling container 20, a nitrogen supply pipe 24, a first nitrogen on-off valve 30 (30-1) and a second nitrogen on-off valve 30 (30-2). . Since the nitrogen head 12, the nitrogen-filled container 20, and the nitrogen supply pipe 24 are the same as those of the first embodiment shown in FIG. 1, the description thereof will be omitted.

A difference from the first embodiment shown in FIG. This is the point. The first nitrogen on-off valve 30 (30-1) and the second nitrogen on-off valve 30 (30-2) may have any structure or type, but for example, remote controllable solenoid valves may be used.

The electrified spray fire extinguishing equipment of this embodiment comprises an electrified spray head 14 , a water filled container 22 , a water supply pipe 26 , a pressure pipe 28 , a water on-off valve 32 , a high voltage power supply 38 and a high voltage cable 40 . The charging spray head 14, the water filling container 22, the water supply pipe 26, the water on-off valve 32, the high-voltage power supply 38, and the high-voltage cable 40 are the same as those in the first embodiment shown in FIG.

The difference from the first embodiment of FIG. 1 is that the pressure pipe 28 branches to the nitrogen supply pipe 24 between the first nitrogen on-off valve 30 (30-1) and the second nitrogen on-off valve 30 (30-2). The points are connected.

The control panel 34 of this embodiment performs, for example, the second to seventh fire extinguishing controls shown in the time charts of FIGS. 6(B) to 6(G). FIG. 6A shows a first fire extinguishing control for discharging nitrogen gas and charged water particles together, which is detailed in the flow diagram of FIG. 4 by the control panel 34 of the first embodiment of the fire extinguishing equipment. This is shown for comparison with the 2nd to 7th fire extinguishing controls.

In the second fire extinguishing control of FIG. 6B, when the fire is determined at time t1, nitrogen gas is released from the nitrogen head 12 and charged water particles are released from the charged spray head 14, and time t2, for example, time This control is to stop the discharge of nitrogen gas when 30 seconds to 1 minute have passed since t1, and to stop the discharge of charged water particles when 30 seconds to 1 minute have passed from time t3, for example, time t2. In the third fire extinguishing control of FIG. 6C, when the fire is determined at time t1, nitrogen gas is discharged from the nitrogen head 12, charged water particles are discharged from the charged spray head 14, and charged water particles are released at time t2. This control is to stop the release of particles and stop the release of nitrogen gas at time t3.

In the fourth fire extinguishing control of FIG. 6(D), when a fire is determined at time t1, charged water particles are first emitted from the charged water particle head 14, and then nitrogen gas is released from the nitrogen head 12 at time t2. This control is to release the nitrogen gas and stop the release of the charged water particles at time t3. In the fifth fire extinguishing control of FIG. 6(E), when the fire is determined at time t1, nitrogen gas is first released from the nitrogen head 12, and then at time t2, charged water particles are released from the charged water particle head 14. This control is to release the nitrogen gas and stop the release of the charged water particles at time t3.

In the sixth fire extinguishing control of FIG. 6(F), when the fire is determined at time t1, nitrogen gas is first released from the nitrogen head 12, and then at time t2, the release of nitrogen gas from the nitrogen head 12 is stopped. In this control, the charged water particles are released from the charged water particle head 14, and the release of the charged water particles is stopped at time t3. In the seventh fire extinguishing control of FIG. 6(G), when a fire is determined at time t1, charged water particles are first emitted from the charged water particle head 14, and then at time t2, charged water particles are discharged from the charged water particle head 14. This control is to stop the release of water particles, release nitrogen gas from the nitrogen head 12, and stop the release of nitrogen gas at time t3.

The details of the second to seventh fire extinguishing controls will be described below, with time t2 being one minute after time t1 and time t3 being one minute after time t2.

[d. Second fire extinguishing control]
The second fire extinguishing control by the control panel 34 provided in the second embodiment of the fire extinguishing equipment shown in FIG. 5 will be described in more detail. In the description, FIG. 7 showing an example of the flow of the second fire extinguishing control by the fire extinguishing equipment of FIG. 5 will be referred to.

The second fire extinguishing control by the control panel 34 releases nitrogen gas and charged water particles together in the protection compartment when a fire in the protection compartment is detected, and when one minute has passed since the fire was determined, It is a control that continues the release of charged water particles into the protection compartment and stops the release of nitrogen gas into the protection compartment, the details of which are as follows.

As shown in FIG. 7, the control (S11 to S16) from when a fire breaks out in the protection section 10 to when the control panel 34 determines that the fire has occurred and determines that the fire extinguishing start condition has been established (S11 to S16) is the first step in FIG. Since it is the same as the fire extinguishing control (S1 to S6), the explanation thereof is omitted.

When the control panel 34 concludes that there is a fire and determines that the fire extinguishing start condition is satisfied (S16), it opens the first nitrogen on-off valve 30 (30-1) (S17), and the pressure pipe 28 from the nitrogen filling container 20 Nitrogen gas is introduced into the water-filled container 22 via and pressurizes the water filled in the water-filled container 22 . Subsequently, the control panel 34 opens the second nitrogen on-off valve 30 (30-2) (S18), supplies nitrogen gas from the nitrogen filling container 20 through the nitrogen supply pipe 24 to the nitrogen head 12, and protects the nitrogen head 12. Nitrogen gas is released into the compartment 10 (S19).

Subsequently, the control panel 34 operates the high-voltage power supply unit 38 to apply a predetermined high voltage to the charging spray head 14 (S20), and opens the water on-off valve 32 (S21), thereby closing the pressurized pipe 28. Water pressurized by the introduction of nitrogen gas is supplied from the water-filled container 22 to the charging spray head 14 via the water supply pipe 26, and the charging spray head 14 charges the water particles, and the water particles are charged into the protective compartment 10. to emit charged water particles (S22). This results in a combined release of nitrogen gas and charged water particles when a fire is declared. When it is determined that a fire has occurred and the fire extinguishing start condition is satisfied, the charged water particles may be released first, and then the nitrogen gas may be released.

Subsequently, when the control panel 34 determines that one minute has passed since the conclusion of the fire (time t2 in FIG. 6B) (S23), it closes the second nitrogen on-off valve 30 (30-2). (S24), the release of nitrogen gas is stopped (S25), and the release of charged water particles is continued.

In order to reduce water damage, the discharge of charged water particles is stopped when two minutes have passed since the conclusion of the fire (time t3 in FIG. 6(B)). In this case, the discharge of charged water particles is stopped by closing the first nitrogen on-off valve 30 (30-1) and the water on-off valve 32 and stopping the operation of the high-voltage power supply unit 38 . Alternatively, the discharge of charged water particles may be stopped when the water filled in the water-filled container 22 is emptied, and the discharge of charged water particles should be stopped after the observer confirms that the fire in the protective compartment 10 has been extinguished. can be

For this reason, in the second fire extinguishing control, nitrogen gas and charged water particles are released together for one minute after the fire is declared, and the oxygen concentration is reduced by releasing nitrogen gas, similar to the first fire extinguishing control. High fire extinguishing effect due to synergistic effect of suffocating fire extinguishing effect and cooling suffocating extinguishing effect due to temperature drop due to absorption of vaporization heat by discharging charged water particles and reduction of oxygen concentration due to elimination of oxygen due to steam generation. make it possible to obtain

In addition, when one minute has passed after the fire has been reduced by releasing nitrogen gas and charged water particles and the combustion reaction has been suppressed, the release of nitrogen gas is stopped and only charged water particles are released. It is possible to extinguish the fire by cooling suffocation extinguishing effect by discharging charged water particles, and since a sufficient amount of discharged charged water particles is secured, it is possible to reduce the amount of nitrogen gas discharged by shortening the nitrogen gas discharge time. can. Therefore, since the capacity and number of nitrogen-filled containers can be further reduced than in the first fire extinguishing control, the scale of equipment and equipment cost can be further reduced than in conventional nitrogen fire extinguishing equipment, and as an alternative to carbon dioxide fire extinguishing equipment Increases the likelihood of installing a nitrogen fire extinguishing system.

[e. Third Fire Extinguishing Control]
The third fire extinguishing control by the control panel 34 provided in the second embodiment of the fire extinguishing equipment shown in FIG. 5 will be described in more detail. In the description, FIG. 8 showing an example of the flow of the third fire extinguishing control by the fire extinguishing equipment of FIG. 5 will be referred to.

The third fire extinguishing control by the control panel 34 releases nitrogen gas and charged water particles together in the protection compartment when a fire in the protection compartment is detected, and when one minute has passed since the fire was determined , control to continue the release of nitrogen gas into the protected compartment and stop the release of charged water particles into the protected compartment, the details of which are as follows.

As shown in FIG. 8, the control (S31 to S36) from when a fire breaks out in the protection section 10 to when the control panel 34 determines that the fire has occurred and determines that the fire extinguishing start condition has been established (S31 to S36) is the first step in FIG. Since it is the same as the fire extinguishing control (S1 to S6), the explanation thereof is omitted.

When the control panel 34 concludes that there is a fire and determines that the fire extinguishing start condition is satisfied (S36), it opens the first nitrogen on-off valve 30 (30-1) (S37), and the pressure pipe 28 from the nitrogen filling container 20 Nitrogen gas is introduced into the water-filled container 22 via and pressurizes the water filled in the water-filled container 22 . Subsequently, the control panel 34 opens the second nitrogen on-off valve 30 (30-2) (S38), supplies nitrogen gas from the nitrogen filling container 20 through the nitrogen supply pipe 24 to the nitrogen head 12, and protects the nitrogen head 12. Nitrogen gas is released into the compartment 10 (S39).

Subsequently, the control panel 34 operates the high-voltage power supply unit 38 to apply a predetermined high voltage to the electrification spray head 14 (S40), and opens the water on-off valve 32 (S41), thereby closing the pressurized pipe 28. Water pressurized by the introduction of nitrogen gas is supplied from the water-filled container 22 to the charging spray head 14 via the water supply pipe 26, and the charging spray head 14 charges the water particles, and the water particles are charged into the protective compartment 10. to emit charged water particles (S42). The control (S37 to S42) up to this point is the same as the second fire extinguishing control (S17 to S22) shown in FIG.

Subsequently, when the control panel 34 determines that one minute has passed since the conclusion of the fire (time t2 in FIG. 6(C)) (S43), it stops the operation of the high-voltage power supply unit 38 (S44), and the water opening/closing valve 32 is closed (S45), the discharge of charged water particles is stopped (S46), and the discharge of nitrogen gas is continued.

The release of nitrogen gas is stopped when two minutes have passed since the conclusion of the fire (time t3 in FIG. 6(C)). In this case, the release of nitrogen gas is stopped by closing the second nitrogen on-off valve 30 (30-2). In addition, it may be stopped when the nitrogen gas filled in the nitrogen-filled container 20 is emptied, and the release of nitrogen gas is stopped after an observer confirms that the fire in the protective compartment 10 has been extinguished. can be

For this reason, in the third fire extinguishing control, nitrogen gas and charged water particles are released together for one minute from the conclusion of the fire. It is possible to obtain a high fire extinguishing effect by the synergistic effect combined with the cooling suffocation extinguishing effect by discharging charged water particles.

In addition, when one minute has passed after the fire has been reduced by releasing nitrogen gas and charged water particles and the combustion reaction has been suppressed, the release of charged water particles is stopped and only nitrogen gas is released. It is possible to extinguish a fire by suffocating fire extinguishing effect by releasing nitrogen gas, and since a sufficient amount of nitrogen gas is secured, the release time of charged water particles can be shortened and the amount of charged water particles released can be reduced. . Therefore, it is possible to reduce damage due to water damage more than the first fire extinguishing control.

[f. Fourth Fire Extinguishing Control]
The fourth fire extinguishing control by the control panel 34 provided in the second embodiment of the fire extinguishing equipment shown in FIG. 5 will be described in more detail. In the description, FIG. 9 showing an example of the flow of the fourth fire extinguishing control by the fire extinguishing equipment of FIG. 5 will be referred to.

A fourth fire extinguishing control by the control panel 34 releases charged water particles into the protected compartment when a fire in the protected compartment is detected, and releases charged water particles into the protected compartment one minute after the fire is declared. It is a control that continues to release charged water particles and releases nitrogen gas into the protected compartment, the details of which are as follows.

As shown in FIG. 9, the control (S51 to S56) from when a fire breaks out in the protection section 10 to when the control panel 34 determines that the fire has occurred and determines that the fire extinguishing start condition has been established (S51 to S56) is the first step in FIG. Since it is the same as the fire extinguishing control (S1 to S6), the explanation thereof is omitted.

When the control panel 34 concludes that there is a fire and determines that the fire extinguishing start condition is satisfied (S56), it operates the high-voltage power supply unit 38 to apply a predetermined high voltage to the charging spray head 14 (S57), and opens and closes the first nitrogen. By opening the valve 30 (30-1) (S58) and opening the water on/off valve 32 (S59), nitrogen gas flows from the nitrogen-filled container 20 to the water-filled container 22 via the pressure pipe 28. Introduced, nitrogen gas pressurizes the water filled in the water-filled container 22 , and the water is supplied from the water-filled container 22 through the water supply pipe 26 to the electrification spray head 14 , and the electrification spray head 14 presses the water. The particles are charged to release charged water particles into the protective compartment 10 (S60).

Subsequently, when the control panel 34 determines that one minute has passed since the conclusion of the fire (time t2 in FIG. 6(D)) (S61), it opens the second nitrogen on-off valve 30 (30-2) ( S62), nitrogen gas is supplied from the nitrogen-filled container 20 to the nitrogen head 12 through the nitrogen supply pipe 24, and the nitrogen gas is discharged into the protective compartment 10 (S63).

The discharge of charged water particles is stopped when 2 minutes have passed since the fire was determined (time t3 in FIG. 6 (D)), and the release of nitrogen gas is stopped when 1 minute has passed since the fire was determined (Fig. 6 (D ) is stopped at time t3). In this case, the discharge of charged water particles is stopped by closing the water on-off valve 32 and by stopping the operation of the high-voltage power supply unit 38, and the discharge of nitrogen gas is stopped by the second nitrogen on-off valve 30 (30-2 ) is closed. It may also be stopped when the water filled in the water-filled container 22 and the nitrogen gas filled in the nitrogen-filled container 20 are emptied, and the release of charged water particles and nitrogen gas is protected by an observer. Extinguishing of the fire in the section 10 may be confirmed and stopped.

Therefore, in the fourth fire extinguishing control, only charged water particles are released for one minute after the fire is determined, and the fire is reduced in scale due to the cooling suffocation extinguishing effect due to the release of charged water particles. Then, one minute after the conclusion of the fire, nitrogen gas is released while continuing to release charged water particles. The combined synergistic effect makes it possible to extinguish a fire with a high fire extinguishing effect.

In addition, by setting the release time of charged water particles to 2 minutes and ensuring a sufficient amount of charged water particles to be released, and starting to release nitrogen gas after 1 minute has passed since the release of charged water particles, nitrogen gas is released. By shortening the time, the amount of nitrogen gas released can be reduced. Therefore, since the capacity and number of nitrogen-filled containers can be further reduced than in the first fire extinguishing control, the scale of equipment and equipment cost can be further reduced than in conventional nitrogen fire extinguishing equipment, and as an alternative to carbon dioxide fire extinguishing equipment Increases the likelihood of installing a nitrogen fire extinguishing system.

[g. Fifth Fire Extinguishing Control]
The fifth fire extinguishing control by the control panel 34 provided in the second embodiment of the fire extinguishing equipment shown in FIG. 5 will be described in more detail. In the description, FIG. 10 showing an example of the flow of the fifth fire extinguishing control by the fire extinguishing equipment of FIG. 5 will be referred to.

The fifth fire extinguishing control by the control panel 34 releases nitrogen gas into the protection compartment when a fire is detected in the protection compartment, and releases nitrogen gas into the protection compartment when one minute has passed since the fire was declared. It is a control that continues to release gas and releases charged water particles into the protected compartment, the details of which are as follows.

As shown in FIG. 10, the control (S71 to 76) from when a fire breaks out in the protection section 10 to when the control panel 34 determines that there is a fire and determines that the fire extinguishing start condition is satisfied (S71 to 76) Since it is the same as the fire extinguishing control (S1 to S6), the explanation thereof is omitted.

When the control panel 34 concludes that there is a fire and determines that the fire extinguishing start condition is satisfied (S76), it opens the first nitrogen on-off valve 30 (30-1) (S77), and the second nitrogen on-off valve 30 (30- 2) By opening operation (S78), nitrogen gas is introduced into the water-filled container 22 from the nitrogen-filled container 20 via the pressurization pipe 28, and the water filled in the water-filled container 22 is pressurized. , nitrogen gas is supplied from the nitrogen-filled container 20 to the nitrogen head 12 via the nitrogen supply pipe 24, and the nitrogen gas is discharged into the protective compartment 10 (S79).

Subsequently, when the control panel 34 determines that one minute has passed since the determination of the fire (time t2 in FIG. 6(E)) (S80), the high voltage power supply unit 38 is operated to apply a predetermined high voltage to the charging spray head 14. is applied (S81) and the water opening/closing valve 32 is opened (S82), water is supplied from the water filling container 22 to the charging spray head 14 via the water supply pipe 26, and the charging spray head 14 The particles are charged to release charged water particles into the protective compartment 10 (S83).

The release of nitrogen gas is stopped when 2 minutes have passed since the fire was determined (time t3 in FIG. 6(E)), and the release of charged water particles is stopped when 1 minute has passed since the start of release of charged water particles. (Time t3 in FIG. 6(E)). In this case, the discharge of charged water particles is stopped by closing the water on-off valve 32 and by stopping the operation of the high-voltage power supply unit 38, and the discharge of nitrogen gas is stopped by the second nitrogen on-off valve 30 (30-2 ) is closed. It may also be stopped when the water filled in the water-filled container 22 and the nitrogen gas filled in the nitrogen-filled container 20 are emptied. Extinguishing of the fire in the section 10 may be confirmed and stopped.

Therefore, in the fifth fire extinguishing control, only nitrogen gas is released for one minute from the conclusion of the fire, and the combustion reaction is suppressed by the suffocation extinguishing effect of the nitrogen gas release. Then, one minute after the conclusion of the fire, the charged water particles are released while the nitrogen gas is continuously released, and the suffocation fire extinguishing effect by the nitrogen gas release and the cooling suffocation fire extinguishing effect by the release of the charged water particles are achieved. The combined synergistic effect makes it possible to extinguish a fire with a high fire extinguishing effect.

In addition, by setting the nitrogen gas release time to 2 minutes to ensure a sufficient amount of nitrogen gas release, and starting to release the charged water particles after 1 minute has elapsed from the release of the nitrogen gas, the charged water particle release time is reduced. can be shortened to reduce the amount of charged water particles emitted. Therefore, it is possible to reduce damage due to water damage more than the first fire extinguishing control.

[h. Sixth Fire Extinguishing Control]
The sixth fire extinguishing control by the control panel 34 provided in the second embodiment of the fire extinguishing equipment shown in FIG. 5 will be described in more detail. In the description, FIG. 11 showing an example of the flow of the sixth fire extinguishing control by the fire extinguishing equipment of FIG. 5 will be referred to.

The sixth fire extinguishing control by the control panel 34 discharges nitrogen gas into the protection compartment when a fire is detected in the protection compartment, and when one minute has passed since the fire was determined, extinguishes the fire into the protection compartment. It is a control that stops the release of nitrogen gas and releases charged water particles into the protected compartment, the details of which are as follows.

As shown in FIG. 11, the control (S91 to S96) from when a fire breaks out in the protection section 10 to when the control panel 34 determines the fire is the first fire extinguishing control (S1 to S6) in FIG. Since it is the same as , the description thereof is omitted.

When the control panel 34 concludes that there is a fire and determines that the extinguishing start condition is satisfied (S96), it opens the first nitrogen on-off valve 30 (30-1) (S97), and the second nitrogen on-off valve 30 (30- 2) By opening (S98), nitrogen gas is introduced into the water-filled container 22 from the nitrogen-filled container 20 via the pressurization pipe 28, and the water filled in the water-filled container 22 is pressurized. At the same time, nitrogen gas is supplied to the nitrogen head 12 from the nitrogen-filled container 20 via the nitrogen supply pipe 24, and the nitrogen gas is discharged into the protective compartment 10 (S99).

Subsequently, when the control panel 34 determines that one minute has passed since the conclusion of the fire (time t2 in FIG. 6(F)) (S100), it closes the second nitrogen on-off valve 30 (30-2) (S101 ), and the release of nitrogen gas is stopped (S102).

Subsequently, the control panel 34 operates the high-voltage power supply unit 38 to apply a predetermined high voltage to the charging spray head 14 (S103), and opens the water opening/closing valve 32 (S104). The water is supplied from the container 22 through the water supply pipe 26 to the charged spray head 14, and the charged spray head 14 charges the water particles to release the charged water particles into the protective compartment 10 (S105).

In order to reduce water damage, the discharge of charged water particles is stopped when one minute has passed since the start of discharge of charged water particles (time t3 in FIG. 6(F)). In this case, the discharge of charged water particles is stopped by closing the first nitrogen on-off valve 30 (30-1) and the water on-off valve 32 and stopping the operation of the high-voltage power supply unit 38 . Alternatively, the discharge of charged water particles may be stopped when the water filled in the water-filled container 22 and the nitrogen gas filled in the nitrogen-filled container 20 are emptied. It is also possible to confirm that the fire has been extinguished and then stop the fire.

Therefore, in the sixth fire extinguishing control, only nitrogen gas is released for one minute from the conclusion of the fire, and the combustion reaction is suppressed by the suffocation extinguishing effect due to the release of nitrogen gas. Then, when one minute has passed since the conclusion of the fire, it is possible to switch to the discharge of charged water particles and extinguish the fire by the cooling suffocation extinguishing effect due to the discharge of charged water particles.

[i. Seventh fire extinguishing control]
The seventh fire extinguishing control by the control panel 34 provided in the second embodiment of the fire extinguishing equipment shown in FIG. 5 will be described in more detail. In the description, FIG. 12 showing an example of the flow of the seventh fire extinguishing control by the fire extinguishing equipment of FIG. 5 will be referred to.

A seventh fire extinguishing control by the control panel 34 releases charged water particles into the protection compartment when a fire is detected in the protection compartment, and releases water into the protection compartment when one minute has passed since the fire was declared. It is a control to stop the discharge of charged water particles and to discharge nitrogen gas into the protective compartment, the details of which are as follows.

As shown in FIG. 12, the control (S111 to S116) from when a fire breaks out in the protection section 10 to when the control panel 34 determines that a fire has occurred is the first fire extinguishing control (S1 to S6) in FIG. Since it is the same as , the description thereof is omitted.

When the control panel 34 concludes that there is a fire and determines that the extinguishing start condition is met (S116), it operates the high-voltage power supply unit 38 to apply a predetermined high voltage to the charging spray head 14 (S117), and opens and closes the first nitrogen. By opening the valve 30 (30-1) (S118) and opening the water on-off valve 32 (S119), the nitrogen gas flows from the nitrogen-filled container 20 to the water-filled container 22 via the pressure pipe 28. The water filled in the water-filled container 22 is pressurized, the water is supplied from the water-filled container 22 through the water supply pipe 26 to the charging spray head 14, and the charging spray head 14 charges the water particles. to release charged water particles into the protection compartment 10 (S120).

Subsequently, when the control panel 34 determines that one minute has passed since the conclusion of the fire (time t2 in FIG. 6(G)) (S121), it stops the operation of the high-voltage power supply unit 38 (S122). The on-off valve 32 is closed (S123), and the release of charged water particles is stopped (S124).

Subsequently, the control panel 34 opens the second nitrogen on-off valve 30 (30-2) (S125), and nitrogen gas is supplied from the nitrogen filling container 20 through the nitrogen supply pipe 24 to the nitrogen head 12, Nitrogen gas is released into the protection compartment 10 (S126).

The release of nitrogen gas is stopped when one minute has passed since the start of release of nitrogen gas (time t3 in FIG. 6(G)). In this case, the release of nitrogen gas is stopped by closing the second nitrogen on-off valve 30 (30-2). Also, it may be stopped when the water filled in the water-filled container 22 and the nitrogen gas filled in the nitrogen-filled container 20 are emptied. It is also possible to stop the fire after confirming that the fire has been extinguished.

Therefore, in the seventh fire extinguishing control, only charged water particles are released for one minute after the fire is determined, and the fire is reduced in scale by the cooling suffocation extinguishing effect due to the release of charged water particles. Then, when one minute has passed since the conclusion of the fire, it is possible to switch to the discharge of nitrogen gas and extinguish the fire by the suffocation extinguishing effect of the discharge of nitrogen gas.

[j. Modification of the present invention]
A modification of the fire extinguishing equipment according to the present invention will be described. The fire extinguishing equipment of the present invention includes the following modifications in addition to the above embodiments.

(First extinguishing control)
In the above embodiment, the first fire extinguishing control for discharging nitrogen gas and charged water particles together is performed in the first embodiment of the fire extinguishing equipment shown in FIG. You may make it perform by 2 embodiment. The first fire extinguishing control according to the second embodiment of FIG. The control may be such that the nitrogen on-off valve 30 (30-2) and the water on-off valve 32 are opened and the high-voltage power source 38 is operated.

(Third fire extinguishing control)
In the above embodiment, the nitrogen gas and the charged water particles are released together, and when a predetermined time has passed since the release of the nitrogen gas and the charged water particles, the release of the nitrogen gas is continued and the charged water particles are discharged. Although the third fire extinguishing control for stopping the release of particles is performed in the second embodiment of the fire extinguishing equipment of FIG. 5, it may be performed in the first embodiment of the fire extinguishing equipment of FIG. In the third fire extinguishing control according to the first embodiment of FIG. 1, when the control panel 34 determines that there is a fire and the fire extinguishing start condition is satisfied, the nitrogen on-off valve 30 and the water on-off valve 32 are opened and operated. The high-voltage power supply unit 38 is activated, and when a predetermined period of time, for example, one minute, has elapsed after the fire has been determined, the water on-off valve 32 is closed to stop the discharge of charged water particles.

(high voltage power supply)
In the above embodiment, a DC voltage is applied between the induction electrode portion 60 and the water-side electrode portion 62 of the charging fine spray head 14 from the high-voltage power supply portion 38. In addition to the DC voltage, a pulse voltage , pulsating current voltage, AC voltage, or the like may be applied. Also, when a voltage is applied from the high-voltage power supply unit 18 between the induction electrode unit 60 and the water-side electrode unit 62, voltage adjustment and voltage polarity switching are possible. may

(others)
Moreover, the present invention is not limited to the above-described embodiments, includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above-described embodiments.

10: Protective compartment 12: Nitrogen head 14: Electrostatic spray head 16: Smoke detector 18: Heat detector 20: Nitrogen-filled container 22: Water-filled container 24: Nitrogen supply line 26: Water supply line 28: Pressurized line 30: Nitrogen on-off valve 30 (30-1): First nitrogen on-off valve 30 (30-2): Second nitrogen on-off valve 32: Water on-off valve 34: Control panel 36: Operation box 38: High voltage power supply unit 40: High voltage cable 40a : Voltage application cable 40b: Earth cable 42: High voltage variable circuit 44: Polarity reversing circuit 46: Current limiting resistor 54: Body 56: Spray nozzle portion 58: Electrode holding portion 60: Induction electrode portion 62: Water side electrode portion 64: water connection

Claims (11)

A fire extinguishing equipment for extinguishing a fire in a partitioned guarded compartment,
A fire extinguishing characterized in that, when a fire is detected in the protection compartment, nitrogen gas is discharged to the entire protection compartment and charged water particles are discharged toward the fire source side, respectively. Facility.
The fire extinguishing equipment according to claim 1,
A fire extinguishing system characterized by discharging said nitrogen gas and said charged water particles together into said protection compartment when a fire in said protection compartment is detected.
The fire extinguishing equipment according to claim 1,
releasing a combination of said nitrogen gas and said charged water particles into said guarded compartment when a fire in said guarded compartment is detected;
When a predetermined time has passed since the release of the nitrogen gas and the charged water particles, continuing the release of the charged water particles into the protection compartment and stopping the release of the nitrogen gas into the protection compartment. Fire extinguishing equipment characterized by
The fire extinguishing equipment according to claim 1,
releasing a combination of said nitrogen gas and said charged water particles into said guarded compartment when a fire in said guarded compartment is detected;
When a predetermined time has passed since the release of the nitrogen gas and the charged water particles, continuing the release of the nitrogen gas into the protection compartment and stopping the release of the charged water particles into the protection compartment. Fire extinguishing equipment characterized by
The fire extinguishing equipment according to claim 1,
releasing said charged water particles into said guarded compartment when a fire in said guarded compartment is detected;
A fire extinguishing equipment characterized by continuing to release said charged water particles into said protection compartment and releasing said nitrogen gas into said protection compartment when a predetermined time has elapsed since said release of said charged water particles.
The fire extinguishing equipment according to claim 1,
releasing the nitrogen gas into the guarded compartment when a fire in the guarded compartment is detected;
A fire extinguishing equipment characterized by continuing to release the nitrogen gas into the protection compartment and releasing the charged water particles into the protection compartment when a predetermined time has elapsed since the nitrogen gas was released.
The fire extinguishing equipment according to claim 1,
releasing the nitrogen gas into the guarded compartment when a fire in the guarded compartment is detected;
A fire extinguishing system characterized by stopping the discharge of the nitrogen gas into the protective compartment and discharging the charged water particles into the protective compartment when a predetermined time has elapsed since the nitrogen gas was discharged.
In the fire extinguishing equipment according to claim 1,
releasing said charged water particles into said guarded compartment when a fire in said guarded compartment is detected;
A fire extinguishing system characterized by stopping the discharge of the charged water particles into the protection compartment and discharging the nitrogen gas into the protection compartment when a predetermined time has elapsed since the discharge of the charged water particles.
The fire extinguishing equipment according to claim 1, 2 or 4,
It consists of a nitrogen fire extinguishing equipment that releases the nitrogen gas, a charged spray fire extinguishing equipment that releases the charged water particles, and a control unit,
The nitrogen fire extinguishing equipment is
a nitrogen head located within the guarded compartment for releasing the nitrogen gas into the guarded compartment;
a nitrogen-filled container filled with the nitrogen gas;
a nitrogen piping path having one end connected to the nitrogen head and the other end connected to the nitrogen filling container for supplying the nitrogen gas from the nitrogen filling container to the nitrogen head;
a nitrogen on-off valve that is arranged in the nitrogen piping route and opens and closes a supply route of the nitrogen gas through the nitrogen piping route;
with
The electrified spray fire extinguishing equipment is
a charged spray head installed in the protected compartment for emitting the charged water particles in the protected compartment;
a high-voltage power supply section that applies a predetermined high voltage to the charging spray head;
a water-filled container filled with water;
One end side is arranged in the water-filled container and the other end side is branched and connected to the nitrogen head side from the nitrogen on-off valve of the nitrogen piping route, and when the nitrogen on-off valve is opened, the water is discharged from the nitrogen-filled container. A pressurized piping route for introducing the nitrogen gas into the filling container;
a water piping path having one end connected to the electrification spray head and the other end disposed in the water filling container for supplying the water from the water filling container to the electrification spray head;
a water on-off valve arranged in the water piping route for opening and closing the water supply route through the water piping route;
with
The control unit
When releasing the nitrogen gas from the nitrogen head, opening the nitrogen on-off valve,
A fire extinguishing equipment, wherein the high-voltage power supply unit is operated and the nitrogen on-off valve and the water on-off valve are opened when the charged water particles are emitted from the charged spray head.
The fire extinguishing equipment according to any one of claims 1 to 8,
It consists of a nitrogen fire extinguishing equipment that releases the nitrogen gas, a charged spray fire extinguishing equipment that releases the charged water particles, and a control unit,
The nitrogen fire extinguishing equipment is
a nitrogen head located within the guarded compartment for releasing the nitrogen gas into the guarded compartment;
a nitrogen-filled container filled with the nitrogen gas;
a nitrogen piping path having one end connected to the nitrogen head and the other end connected to the nitrogen filling container for supplying the nitrogen gas from the nitrogen filling container to the nitrogen head;
a first nitrogen on-off valve that is arranged in the nitrogen piping route and opens and closes a supply route of the nitrogen gas through the nitrogen piping route;
a second nitrogen on-off valve disposed closer to the nitrogen head than the first nitrogen on-off valve in the nitrogen piping route and opening and closing a supply route of the nitrogen gas through the nitrogen piping route;
with
The electrified spray fire extinguishing equipment is
a charged spray head installed in the protected compartment for emitting the charged water particles in the protected compartment;
a high-voltage power supply section that applies a predetermined high voltage to the charging spray head;
a water-filled container filled with water;
One end side is arranged in the water-filled container and the other end side is branched and connected to the nitrogen pipe path between the first nitrogen on-off valve and the second nitrogen on-off valve, and the first nitrogen on-off valve is opened. a pressurized piping route for introducing the nitrogen gas from the nitrogen-filled container to the water-filled container when the
a water piping path having one end connected to the electrification spray head and the other end disposed in the water filling container for supplying the water from the water filling container to the electrification spray head;
a water on-off valve arranged in the water piping route for opening and closing the nitriding water supply route through the water piping route;
with
The control unit
When releasing the nitrogen gas from the nitrogen head, opening the first nitrogen on-off valve and the second nitrogen on-off valve,
A fire extinguishing equipment, wherein when the charged water particles are emitted from the charged spray head, the high-voltage power supply unit is operated and the first nitrogen on-off valve and the water on-off valve are opened.
A fire extinguishing method for extinguishing a fire in a partitioned guarded compartment, comprising:
When a fire in the protection compartment is detected, according to a predetermined control, nitrogen gas is released toward the entire protection compartment and charged water particles are released toward the fire source side to extinguish the fire. extinguishing method.

Images