JPH10118209A - Fire extinguishing device of mid-air scattering type - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure a safe fire extinguishing work and a high effect even if a helicopter can not access the vicinity of fire by providing a container filled with a fire extinguishing agent which is hung by a helicopter or the like and dropped thereby. SOLUTION: At a center of a bottom board 3 of a sealed container 1 mountable on a helicopter or the like 12 and filled with a fire extinguishing agent 2 therein, discharge ports 4 are formed. An openable and closable valve element 5 is installed in the container 1 so that it may be urged to close the ports 4 normally, and is connected to one end of a wire 8 lockable to the helicopter 12, and the other end thereof penetrating an upper surface of the container 1. The valve 5 is opened by controlling the tension applied to the wire 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which a container filled with a fire extinguishing agent is carried by a helicopter or the like to a space above a fire site, and is dropped from the sky to spray the fire extinguishing agent and extinguish the fire. The present invention relates to an aerial spraying type fire extinguishing device.

[0002]

2. Description of the Related Art Conventionally, in order to extinguish a forest fire, a forest fire, and the like, and a fire such as a house or a building, extinguishing a large fire by not only discharging water or extinguishing agent from the ground, but also using a large helicopter or an airplane. Spraying water and fire extinguisher from the air has been performed.

[0003] That is, when it is difficult to secure a water source near the fire source or when the fire is so strong that it is difficult to approach the fire source, use a helicopter or the like to remove water or fire extinguisher from the sky. Spraying to make up for the lack of fire extinguishing ability on the ground.

[0004]

However, when a fire is intense and flames and smoke rise to a high altitude, it is difficult to fly the helicopter at a low altitude near the fire and spray the helicopter. Therefore, water and fire extinguisher must be sprayed from far above, and the water and fire extinguisher scatter before reaching the ground, and the fire extinguishing effect is diminished.

[0005] When pumping water from a river or the sea, it is necessary to prepare a large number of large-scale helicopters dedicated to fire extinguishing having facilities such as a pump and a large water tank, which increases the cost.

An object of the present invention is to enable a fire extinguishing operation to be performed safely by dropping a container filled with a fire extinguishing agent by a helicopter or the like, and to provide a high fire extinguishing even when the helicopter or the like does not approach a fire source. An object of the present invention is to provide an aerial spray type fire extinguisher that can exhibit the effect of (1).

[0007]

According to the present invention, the above-mentioned problem is solved as follows. (1) A discharge port for the fire extinguishing agent is provided at the center of the bottom plate of a closed container filled with a fire extinguishing agent, and the opening can be opened and closed from the inside of the container. , The outlet is always urged in the closing direction, and one end penetrates the upper surface of the container, the valve body is connected to the other end of the wire that can be locked to the flying object, The valve body is opened by the tension acting on the wire.

(2) A valve that can be mounted on a flying object and has a discharge port for the fire extinguishing agent provided at the center of the bottom plate of a closed container filled with a fire extinguishing agent, and that can be opened and closed from inside the container. The body is always urged in a direction to close the discharge port, and the valve body is connected to one end of a wire passing through the center of the upper surface of the container, and the other end of the wire is connected for a predetermined time after dropping the container. Join the parachute that opens after the passage of time.

(3) A valve which can be mounted on a flying object and has a discharge port for the fire extinguishing agent provided at the center of the bottom plate of the closed container filled with the fire extinguishing agent, and which can be opened and closed from the inside of the container. The body is always urged in a direction to close the discharge port, and the valve body is connected to one end of a wire passing through the center of the upper surface of the container, and the other end of the wire is connected for a predetermined time after dropping the container. After a lapse of time, it is connected to a floating body which is inflated by the operation of the gas generator.

(4) A part of a container which can be mounted on a flying object and is filled with a fire extinguishing agent is sealed by a closure which can be dropped or broken by a certain or more tensile load,
The other side of the closure in the container is connected to one end of a wire, and the other end of the wire is connected to a flying object, a parachute,
Binds to any of the floating bodies.

(5) A part of a closed container which can be mounted on a flying object and is filled with a fire extinguisher is provided with a blasting device which operates after a predetermined time has elapsed after the container is dropped and breaks the container.

(6) A fire-extinguishing agent is filled in a sealed container that can be mounted on a flying object and has a partly weakened part, and is activated after a predetermined time has elapsed since the container was dropped. A gas generator for generating gas is housed.

(7) A plurality of wires are wrapped around at least a bottom outer peripheral surface of a soft container that can be mounted on a flying object and is filled with a fire extinguishing agent, and the wires are placed on a flying object, a parachute, or a floating object. Binds to one of the bodies.

(8) In any one of the above items (1) to (7), the container is foldable.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an airborne fire extinguisher according to the present invention will be described with reference to FIG. In addition, for convenience of explanation, the container is shown too large as compared with the helicopter.

In FIG. 1, (1) is a sealed container made of metal or hard plastic, and the inside thereof is filled with a liquid fire extinguishing agent (2) described later. The container (1) has substantially the same shape and volume as a drum, for example, and
It can be filled with 00 liters of liquid fire extinguisher (2).

In the center of the bottom plate (3) of the container (1), there is provided a discharge port (4) for the liquid fire extinguishing agent (2) which expands downward, and the discharge port (4) is provided in the container (1). ) Is always closed by the valve body (5) housed in the inside. That is, the valve body (5) is lowered by the compression coil spring (7) compressed between the stay (6) fixed to the upper surface of the bottom plate (3) of the container (1) and the valve body (5). And the outlet (4) is closed.

The lower end of the wire (8) is connected to the center of the upper surface of the valve body (5). Wire (8) is the top lid of container (1)
It extends through the through hole (10) provided in the center of (9) to the outside of the container (1) by a required length.
(14) is fixed.

A packing (11) for preventing leakage of the liquid fire extinguishing agent (2) inside is inserted into the through hole (10) in a detachable manner, and the wire (8) penetrates tightly through the packing (11). doing.

Immediately below the packing (11), a wire (8)
, A pressing piece (8a) is fixed. This pressing piece (8a)
When the wire (8) is pulled upward, the gasket (11) is pressed upward, comes off the upper lid (9), introduces outside air into the container (1), and extinguishes the fire extinguisher (2). For facilitating the release of water.

The container (1) constituted as described above constitutes an aerial spray type fire extinguishing system by itself, and a large number of containers (1) are stored in a state filled with a liquid extinguishing agent (2) in preparation for a fire. Keep it.

In the event of a fire, a large number of containers (1) are loaded on a large transport helicopter (12) and carried over the fire. At a fire site, leave the helicopter (12) hovering at a safe altitude as close to
The locking ring (14) at the upper end of (8) is locked to the hook (15) provided at the lower part of the helicopter (12), and the hatch (13)
Is opened and the container (1) is dropped.

After the dropped container (1) drops by the length of the wire (8), the bottom plate (3) and the discharge port (4) as shown in FIG. Is in a vertical position facing downward, and the upward tension of the wire (8) causes
(5) is opened against the compression coil spring (7). Thereby, the liquid fire extinguishing agent (2) in the container (1) is discharged to the discharge port (4).
Is released to the outside through the fire and spread widely on fire sources.

At this time, the pressing piece (8a) fixed to the wire (8)
As a result, the packing (11) is removed, and outside air is introduced into the container (1) through the through hole (10), so that the liquid fire extinguishing agent (2) flows out smoothly.

After the liquid fire extinguishing agent (2) in the container (1) has been discharged, the locking ring (14) at the upper end of the wire (8) is hooked (1).
5) Remove, empty container (1) is thrown away on the ground, and preparation for dropping the next container is started.

As described above, in the first embodiment, since the fire extinguishing agent is dropped together with the container and sprayed in the air from a predetermined height, the fire is strong and the helicopter (12) descends close to the fire source. Even if it cannot come, fire extinguishing work can be performed effectively.

In addition, since the liquid fire extinguishing agent (2) can be sprayed to the intended fire source without diffusing it, the effect of the initial fire extinguishing can be enhanced.

Further, a helicopter (12) for fire extinguishing work
Need not be special equipment for loading a fire extinguishing agent.

FIG. 2 shows a second embodiment of the aerial spray type fire extinguisher according to the present invention. Since the container (1) is almost the same as that of the first embodiment, the same members are denoted by the same reference numerals, and detailed description thereof will be omitted.

The second embodiment differs from the first embodiment in that the upper end of the wire (8) is not connected to the body of the helicopter (12), but after the container (1) is dropped. It is connected to the parachute (20) that opens after a predetermined time has elapsed.

In FIG. 2, (21) is a storage bag for storing a folded main parachute (20) and an auxiliary parachute (not shown). The storage bag (21) is connected to the upper surface of the upper lid (9) of the container (1) by hanging wires (22) and (22).

A well-known timer type injection device (23) is attached to the lower part of the storage bag (21). The injection device (23)
After the container (1) is dropped, a small auxiliary parachute is automatically ejected after a certain time has elapsed by the operation of a timer. As is well known, the auxiliary parachute is opened shortly after the operation of the injection device, and below it a large main parachute (20) connected by a rope (24).
Is opened from the storage bag (21).

The upper end of the wire (8) is connected to the main parachute (20). The lower end of the wire (8) is
1) It is connected to the center of the upper surface of the valve element (5) in the container (1) through the packing (11) of the upper lid (9). Wire (8)
It is considerably shorter than that in the first embodiment. The dimensions of the main parachute (20) are such that the container (1) is lowered slowly to the ground.

When the container (1) is loaded on a helicopter and dropped from above the fire source, after a lapse of a predetermined time, the auxiliary parachute and the main parachute (20) are opened, and the wire is thereby moved.
The valve element (5) is opened by the tension of (8), as in the first embodiment. Thereby, the container (1) is slowly lowered by the main parachute (20), and the liquid fire extinguishing agent (2) is discharged from the discharge port (4).

According to the second embodiment, the same functions and effects as those of the first embodiment can be obtained, and further, the following effects can be obtained. In the first embodiment, the impact from the wire (8) acts on the helicopter.
(8) Although the length is limited, in the second embodiment, after the container (1) is dropped, the main parachute (20) is opened to discharge the liquid fire extinguishing agent (2). Since the time until the start of the operation can be set arbitrarily by a timer, the operation of dropping the container (1) can be performed at a higher altitude away from the source of the helicopter, which is safe.

Further, since the containers (1) can be continuously dropped one after another, the fire extinguishing operation becomes more efficient and the fire extinguishing ability is enhanced.

Further, if the container (1) is continuously dropped while the helicopter is horizontally or orbitally flying, it is effective for extinguishing a wide range of fire such as a forest fire or a forest fire.

FIG. 3 shows a third embodiment of the aerial spray type fire extinguisher according to the present invention. The third embodiment is different from the second embodiment in that the upper end of the wire (8) is replaced with a parachute, and after the container (1) is dropped, a floating body (30) which expands after a predetermined time has elapsed. It is connected to.

In FIG. 3, (30) is a balloon-shaped floating body which is filled with a gas lighter than air and expands. (31)
Is a gas generator attached to the lower part of the floating body (30), and includes a high-pressure gas cylinder and a timer (both are not shown).

Before dropping the container (1), the folded floating body (30) and the gas generator (31) are held on the upper surface of the upper lid (9) of the container (1).

When the container (1) is dropped from the helicopter and a predetermined time has elapsed, a timer is operated to emit a light gas such as hydrogen or helium from the high-pressure gas cylinder into the floating body (30). Swell.

The upper end of the wire (8) is connected to the gas generator (31) integrated with the floating body (30).
Pierces the packing (11) of the top lid (9),
It is connected to the center of the upper surface of the valve element (5) in (1).

When the floating body (30) expands, a tension acts on the wire (8) due to its air resistance, and the valve body (5) is opened. Thereby, the container (1) discharges the liquid fire extinguishing agent (2) while descending slowly. In the third embodiment, the same operation and effect as in the second embodiment can be obtained.

FIGS. 4 and 5 show a fourth embodiment. 4 and 5, the inside of the container (40) is filled with the liquid fire extinguishing agent (2). A bottom lid (41) is provided at the lower end opening of the body (42) of the container (40), and in a sealed state so that the liquid fire extinguishing agent (2) in the container (40) does not leak,
The plurality of chains (43) are connected to the body (42).

FIG. 5 is an enlarged view of a fixing portion of the chain (43) to the body (42). Bolts (4) are inserted into through holes (45), which penetrate up and down, provided on stays (44) fixed to the outer peripheral surface of the trunk (42).
6) and tightened by a nut (47) to pull the chain (43) held through the lower end of the bolt (46). The chain (43) has a weak part (48) that is weak in strength by cutting a part of the ring that constitutes it, and a certain or more tensile load is applied to the chain (43). The vulnerable part (4
8) is extended, the chain (43) is cut, and the bottom lid (41) is
2) It has a structure that drops off. The fragile portion (48) may be a small cross-sectional area.

The top plate (49) of the container (40) is integral with the body (42). On the top surface, a storage bag (21) connected to a pair of wires (51) and a timer An injection device (23) of the type is held.

After the container (40) has been dropped, the injection device (23) is started after a predetermined time has elapsed by the operation of the timer (23),
First, a small auxiliary parachute (52) is ejected from the storage bag (21), and then the main parachute (20) is pulled out and opened by the auxiliary parachute (52). The main parachute (20) suspends the container (40) with a wire (51).

When the main parachute (20) is opened, the container (40) is suspended with the bottom lid (41) facing downward, and at that moment, the container (40) is accelerated and falls. When the buoyancy of the main parachute (20) is applied via the wire (51), the falling speed of the container (40) is rapidly reduced. that time,
The inertial weight of the liquid fire extinguishing agent (2), which is about to fall, acts on the bottom lid (41) with many times acceleration, and its force is:
Since the chain (43) is also acting on a plurality of chains (43) fixing the bottom cover (41), the chain (43) breaks from the fragile portion (48) and the bottom cover (4
When 1) falls off, the internal liquid fire extinguishing agent (2) is released.

Also in the fourth embodiment, the second,
The same functions and effects as those of the third embodiment can be obtained.

As shown in FIG. 6, in the case of a container such as a drum without a bottom cover, a V-groove is formed on the outer peripheral surface on the bottom side of the body (42) or the lower outer peripheral surface of the bottom plate (50). Thin section (53)
May be formed, and this portion may be used as a weak portion so that the bottom of the container (40) falls off.

In the fourth embodiment, the above-mentioned parachute (20) is used to apply a sudden brake to the fall of the container (40), but instead, a wire as in the first embodiment is used. The helicopter may be a body of the helicopter or a floating body shown in the third embodiment.

A weight may be provided on the bottom cover (41) so that, after the container (41) is dropped, the bottom cover (41) side immediately faces downward. In this case, the inertia of the liquid fire extinguishing agent (2) when the main parachute (20) is opened effectively acts on the bottom cover (41), so that the bottom cover (41) falls off easily.

FIGS. 7 and 8 show a fifth embodiment. A timer-type blasting device (62) is mounted on the upper surface of the central part of the top plate (61) of the container (60) filled with the liquid fire extinguishing agent (2), and the blasting device (62) is mounted on the upper surface of the top plate (61). A plurality of grooves extending radially from the base of the mounting part to provide a thin fragile part (63)
After a certain period of time from the release of the container (60), the blasting device
By exploding (62), the container (60) can be
And the liquid fire extinguisher (2) is sprayed.

The timer-type blasting device (62) includes a top plate (61)
The explosive (65) is filled into a small-diameter cylindrical part (64) with a bottom connected to the upper surface of the central part of the timer, and a timer-type detonator (68) is provided inside the small-diameter cylindrical part (64). The case (67) that accommodates is screwed, and the upper surface thereof is sealed with a cap (66). (65a) is a fuse, and (69) is a fire extinguishing agent inlet provided on the top plate (61).

In the present embodiment, only the container (60) may be dropped by a helicopter or the like, or it may be dropped together with a parachute.

When using a parachute, it is preferable to suspend the bottom plate of the container (60). In the fifth embodiment, the same operation and effect as described above can be obtained.

FIG. 9 shows a sixth embodiment of the present invention. A small-diameter cylindrical portion (72) with a lid and a bottom is provided on the center upper surface of the top plate (71) of the container (70) filled with the liquid fire extinguishing agent (2), and a timer (73) is accommodated therein. The fuze (7) connected to the timer (73) is provided on the back of the central portion of the top plate (71) in the container (70).
The gas generator (74) operated by 4a) is fixed. On the upper surface of the top plate (71), similarly to the above, a fragile portion (75) is formed by a plurality of grooves directed in the radiation direction.

The gas generating device (74) comprises an igniting agent and a gas generating agent (both not shown). After the container (70) is dropped from a helicopter or the like and the timer (73) is operated, the gas generating device (74) is activated. Burns and releases an inert gas such as nitrogen. As a result, the internal pressure of the container (70) rapidly rises, the container (70) is broken from the fragile portion (75), and the liquid fire extinguisher (2) is sprayed. Also in the present embodiment, the container (70) may be dropped alone or may be dropped using a parachute.

In the fifth and sixth embodiments, instead of omitting the timer (13), an explosion or ignition device which is activated by an impact is provided, and the explosive (65) is discharged by an impact upon a collision with the ground. The container may be destroyed by exploding or generating gas inside the container, and the liquid fire extinguishing agent (2) may be scattered around.

This is effective for extinguishing a fire on a flat ground such as a grassland and preventing the spread of fire. The ignition means of the explosive (65) or the gas generator (74) may be an ignition means using an air pressure sensor, an altitude (distance) sensor, or the like instead of the timer.

In each of the above-described embodiments, the container has substantially the same shape and volume as the drum can. However, the shape of the container may be a prism, a sphere, or the like, and the size may be loaded on a helicopter or the like, or the work in the machine may be performed. The selection can be made in consideration of optimum combinations such as properties, handleability, fire extinguishing efficiency, and cost.

FIG. 10 shows a seventh embodiment of the present invention. The container (80) in this embodiment is made of a soft plastic and is formed into a collapsible substantially spherical shape, and after filling with the liquid fire extinguisher, a plurality of wires (81) such as a piano wire are provided on the outer peripheral surface of the container (80). Is run around and suspended from a flying object such as a helicopter. In addition, the suspension wire (82) may be directly hooked on the flying object, or may be connected to the parachute (20) or the floating body (30) similar to the above.

In this embodiment, when the container (80) falls and abrupt braking is applied to the container (80), the inertial weight of the container (80) acts on the wire (81), so that the soft plastic container (80) ) Is broken by the plurality of wires (81), and the liquid fire extinguishing agent inside is released.

Reference numeral (83) denotes a fitting for detachably locking a hook (84) fixed to the end of each wire (81), and reference numeral (85) denotes a cap for sealing a fire extinguishing agent injection port. . According to this embodiment, the container (80) is inexpensive, the container (80) can be transported in a small folded state, so that the transportation efficiency is good, and a fire extinguisher storage tank is installed in a large transport machine or the like. Therefore, there is an advantage that it can be dropped while sequentially filling the container (80).

FIG. 11 shows an eighth embodiment of the present invention. The container (90) in this embodiment is formed of hard plastic into a foldable bellows shape, and has an upper plate (9).
The locking piece (91) provided in 0a) can be hung by a wire (92).

The suspension wire (93) connected to the upper end of the wire (92) is connected to any of a flying object, a parachute, and a floating body as described above. On the lower surface of the bottom plate (90b) of the container (90), a circular V-shaped fragile portion (90c) is formed,
When the brake is applied to the container (90) when it is dropped, the center of the bottom plate (90b) falls out due to the inertial weight of the liquid extinguishing medium (2) inside, and the extinguishing agent (2) is released. ing.

Between the lower surface of the upper plate (90a) and the upper surface of the bottom plate (90b), a plurality of holding rods (94) close to the outer peripheral surface of the container (90) are provided.
However, by fitting the outwardly bent portions (94a) at both ends into locking holes (95) connected to the upper plate (90a) and the bottom plate (90b), they can be detachably inserted. Have been. This holding rod (94)
Prevents the container (90) from expanding and contracting vertically and expanding outward when the folded container (90) is stretched into a container as shown and filled with fire extinguisher (2) It is for doing.

Reference numeral 96 denotes a cap for sealing the injection port formed in the upper plate 90a. This embodiment is also similar to the seventh embodiment.
In the same manner as in the embodiment, since the container (90) can be folded and transported, there is an advantage that the transportation efficiency is high, and the fire extinguishing agent can be dropped while being sequentially filled from a storage tank installed in a transport machine or the like.

In the eighth embodiment, the fragile portion
(90c) instead of blasting equipment (62)
The container (90) may be destroyed by attaching a gas generator (74) or the like.

Next, the composition and operation of the liquid fire extinguishing agent used in each of the above embodiments will be described. The preferred composition of the liquid fire extinguishing agent is as follows. Ammonium carbonate ((NH ₄ ) ₂ CO ₃ ) from 25% by weight to almost saturated amount, ammonium chloride (NH ₄ Cl) 15% by weight to 3%
5% by weight, potassium carbonate (K ₂ CO ₃ ) 10 to 25% by weight, dibasic ammonium phosphate ((NH ₄ ) ₂ HPO ₄ ) 4 to
Dissolving a drug mixture consisting of 7% by weight and 2-4% by weight of sodium bicarbonate (NaHCO ₃ ) with a required amount of water;
Further, this is diluted with water 2,8-3,0 times so as to have a specific gravity of 1,1-1,3.

The function is as follows. The sprayed liquid fire extinguishing agent causes a chemical reaction by the heat of the combustion material or the flame, deprives the heat and oxygen, and shuts off the air by generating steam to extinguish the flame. The function of each component of the liquid fire extinguishing agent is as follows.

(1) An aqueous solution of ammonium carbonate is decomposed at about 70 ° C. and reacts as follows. (NH ₄ ) CO ₃ → 2NH ₃ + CO ₂ + H ₂ O When the above NH ₃ reacts with oxygen, it decomposes as follows. 4NH ₃ + 3O ₂ → 2N ₂ + 6H ₂ O By these CO ₂ , N ₂ , NH ₃ and H ₂ O, oxygen is eliminated and combustion is suppressed.

(2) Ammonium chloride and potassium carbonate react slightly as described below even at room temperature, and emit a weak ammonia smell. 2NH ₄ Cl + K ₂ CO ₃ → 2NH ₃ + CO ₂ + 2KCl +
Since the reaction proceeds rapidly with an increase in the temperature of H ₂ O, when a fire extinguisher is sprayed in a fire, the reaction occurs violently, and the generated NH ₃ reacts with oxygen and decomposes as follows. 4NH ₃ + 3O ₂ → 2N ₂ + 6H ₂ O Therefore, as in the above item (1), CO ₂ , N ₂ , NH ₃ , H ₂ O
Rapidly eliminates oxygen, so that combustion is greatly suppressed by a synergistic effect with ammonium carbonate.

(3) Ammonium diphosphate is known as a fire extinguisher and has been used in fire extinguishers for a long time. However, due to the synergistic action with ammonium carbonate, ammonium chloride, and potassium carbonate, it is further increased. Strongly contributes to fire fighting.

(4) Sodium bicarbonate suppresses the reactions of the above items (1) and (2) at room temperature and has a stabilizing effect. However, at a high temperature, it decomposes to generate CO ₂ and has a fire-extinguishing effect. It plays a part.

In addition to the above effects, chlorides, phosphates, etc. remaining in the fire extinguishing liquid sprayed in the fire without being diffused as a gas cover the object and prevent the spread of fire. It has the effect of preventing re-ignition. It goes without saying that the fire extinguishing action based on the large latent heat of vaporization (endothermic) of the water itself in which the above-mentioned various chemicals are dissolved and the elimination of oxygen by the generated water vapor.

Instead of the liquid fire extinguishing agent having the above composition,
An aqueous solution in which only ammonium carbonate ((NH ₄ ) ₂ CO ₃ ) is dissolved in about 2 to 3 times the amount of water or a liquid fire extinguisher in which the ammonium chloride and potassium carbonate are omitted from the above composition may be used.

Even when such a liquid fire extinguisher is used, the excellent combustion suppressing action of ammonium carbonate, which is the main component,
Has sufficient fire extinguishing ability.

By using the above-mentioned liquid fire extinguishing agent filled in the container of the fire extinguisher according to each of the above-described embodiments, excellent fire extinguishing ability can be obtained. However, depending on the scale of the fire and the object to be extinguished, etc. In some cases, the container may be simply filled with water or powdered fire extinguisher.

When the present invention is applied to an oil fire in a petroleum complex or an oil field, the fire extinguisher having the above-described composition contains a foam extinguisher having a high air-blocking effect, for example, sodium alkylbenzenesulfonate. It is effective to add a surfactant-based material.

[0081]

According to the present invention, the following effects can be obtained. (A) Since the fire extinguishing agent can be sprayed directly toward the base of fire by dropping the container from a certain level with a helicopter or the like, the fire extinguishing work can be performed particularly effectively at the initial fire extinguishing time and safely.

(B) According to the second to sixth aspects of the present invention,
In addition to the effect of (a), since the container can be dropped from a higher altitude, it is highly safe, and can be continuously and widely dropped. Excellent and effective in preventing fire spread.

(C) According to the invention of claim 7, since the container is inexpensive and a complicated and expensive device for discharging the fire extinguisher is not required, the cost of the entire device can be reduced.

(D) According to the eighth aspect of the present invention, the efficiency of transporting the container is improved, and the fire extinguisher stored in the flying object can be sequentially filled into the container and dropped.

[Brief description of the drawings]

FIG. 1 is a central vertical sectional front view showing a first embodiment of an aerial spray type fire extinguisher according to the present invention.

FIG. 2 is a central vertical sectional front view showing the second embodiment.

FIG. 3 is a central longitudinal sectional front view showing a third embodiment.

FIG. 4 is an external view showing a fourth embodiment.

FIG. 5 is an enlarged vertical sectional view of a portion A in FIG. 4;

FIG. 6 is a longitudinal sectional view of a main part showing a weakened part of a container in a fourth embodiment.

FIG. 7 is an enlarged vertical cross-sectional view of a blasting device mounting portion in a fifth embodiment of the aerial spraying type fire extinguishing device.

FIG. 8 is a plan view of FIG. 7;

FIG. 9 is an enlarged vertical cross-sectional view of a gas generator mounting portion in a sixth embodiment of the aerial spraying type fire extinguisher.

FIG. 10 is a front view showing a seventh embodiment of the aerial spraying type fire extinguisher.

FIG. 11 is a front view of a central vertical section showing an eighth embodiment.

[Explanation of symbols]

 (1) Container (2) Liquid fire extinguisher (3) Bottom plate (4) Discharge port (5) Valve (6) Stay (7) Compression coil spring (8) Wire (9) Top lid (10) Through hole (11) Packing (12) Helicopter (13) Hatch (14) Lock ring (15) Hook (20) Main parachute (21) Storage bag (22) Hanging wire (23) Injection device (24) Rope (30) Floating body ( 31) Gas generator (40) Container (41) Bottom lid (42) Trunk (43) Chain (44) Stay (45) Through hole (46) Bolt (47) Nut (48) Fragile part (49) Top plate ( 50) Fire extinguishing agent inlet (51) Wire (52) Auxiliary parachute (53) Thin section (60) Container (61) Top plate (62) Timer-type blasting device (63) Fragile section (64) Small diameter cylinder section (65) Gunpowder (66) Cap (67) Case (68) Timer type detonator (69) Fire extinguisher inlet (70) Container (71) Top plate (72) Small diameter cylinder (73) Timer (74) Gas generator (75) Vulnerable part (80) Container (81) Wire (82) Hanging wire (83) Locking bracket (84) Hook (85) Cap (90) Container (90a) Top plate (90b) Bottom plate (90c) Vulnerable part (91 ) Locking piece (92) Wire (93) Hanging wire (94) Holding rod (94a) Bend (95) Locking hole (96) Cap

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B65D 90/00 B65D 83/00 H

Claims (8)

[Claims] 1. A valve which can be mounted on a flying object and has a discharge port for the fire extinguishing agent provided in the center of a bottom plate of a closed container filled with a fire extinguishing agent and which can be opened and closed from inside the container. The valve body is always urged in a direction to close the discharge port, and one end is connected to the other end of a wire that penetrates the upper surface of the container and can be locked to the flying object. An aerial spray type fire extinguisher characterized in that the valve element is opened by tension acting on the wire. 2. A valve body which can be mounted on a flying object and has a discharge port for the fire extinguishing agent provided at the center of a bottom plate of a closed container filled with a fire extinguishing agent, and which can be opened and closed from the inside of the container. Is always provided in a direction to close the discharge port, and the valve body is connected to one end of a wire penetrating the center of the upper surface of the container, and the other end of the wire passes for a predetermined time after the container is dropped. An airborne fire extinguisher characterized by being connected to a parachute that opens later. 3. A valve body which can be mounted on a flying object and has a discharge port for the fire extinguishing agent provided at the center of a bottom plate of a closed container filled with a fire extinguishing agent and which can be opened and closed from the inside of the container. Is always provided in a direction to close the discharge port, and the valve body is connected to one end of a wire penetrating the center of the upper surface of the container, and the other end of the wire passes for a predetermined time after the container is dropped. An aerial spray-type fire extinguisher characterized by being connected to a floating body which is later expanded by the operation of a gas generator. 4. A part of a container which can be mounted on a flying object and is filled with a fire extinguisher is sealed by a closure which can be dropped or broken by a tensile load of a certain value or more. An aerial spray type fire extinguisher characterized in that the opposite side is connected to one end of a wire, and the other end of the wire is connected to any of a flying object, a parachute, and a floating body. 5. A blasting device which is mounted on a flying object and is provided with a blasting device which operates after a lapse of a predetermined time from the release of the container and destroys the container is provided in a part of the closed container filled with a fire extinguisher. Aerial spray type fire extinguisher. 6. An airtight container that can be mounted on a flying object and has a partially weakened part is filled with a fire extinguishing agent, and is activated after a predetermined time has elapsed after the container is dropped. An aerial spray type fire extinguisher characterized by containing a gas generator for generating air. 7. A plurality of wires are wound around at least the outer peripheral surface on the bottom side of a flexible container which can be mounted on a flying object and is filled with a fire extinguisher, and the wires are attached to the flying object,
An aerial spray type fire extinguisher characterized by being connected to a parachute or a floating body. 8. The container according to claim 1, wherein the container is foldable.
An aerial spray type fire extinguisher according to any one of the above.