KR20230000052U - Fire extinguishing device using piezoelectric element - Google Patents

Abstract

The present invention includes a fire extinguishing agent loading box and a parachute provided on top of the fire extinguishing agent loading box, the fire extinguishing agent loading box has an explosion device part and a fire extinguishing agent loading part therein, and the explosion device part has a piezoelectric element connected to the parachute, The piezoelectric element is operated by the amount of impact generated when the parachute is opened to generate electricity, and the explosion device explodes by the generated electricity to provide a fire extinguishing device that ejects the loaded fire extinguishing agent.

Description

Fire extinguishing device using piezoelectric element}

The present invention relates to a fire extinguishing device using a piezoelectric element.

In general, a fire extinguisher refers to a transportable mechanism that extinguishes a fire by using an effect such as cooling or air blocking of an extinguishing agent in an early stage of a fire. There are several types of fire extinguishers depending on the agent used or the mechanism thereof, but currently used fire extinguishers include foam fire extinguishers, powder fire extinguishers, halon fire extinguishers, carbon dioxide fire extinguishers, and the like.

The fire extinguisher includes a container in the form of a pressure-resistant container into which an extinguishing agent is filled, a valve installed at an upper inlet of the container, and a pipe-shaped nozzle connected to the valve. A pressure gauge and handle are installed on the valve. The nozzle part usually includes a flexible hose so that the spray can be directed precisely towards the fire.

On the other hand, in the case of a forest fire or a large building fire, it is difficult for firefighters or firefighting vehicles to access, and a large amount of extinguishing agent is required, so a fire extinguishing device in the form of dropping the extinguishing agent using a helicopter is used. Since the fire extinguishing device is difficult to suppress a wide range of flames when the fire extinguishing agent is applied by dropping it directly on the flame, it is manufactured in a form of ejecting the fire extinguishing agent in the air above the flame.

A detonator is usually used in the above fire extinguishing device, and in order to adjust the explosion height of the fire extinguishing device, the detonation height or detonation point is adjusted by linking the detonator with a timer, report control, temperature measurement sensor, distance measurement sensor, etc. .

However, the conventional fire extinguishing device has a complex structure and is expensive, and lacks reliability in operation and safety when in use. For example, the conventional fire extinguishing device does not explode in the air and has a high defect rate falling to the ground, and when an explosion occurs, only a part of the fire extinguishing device is destroyed, causing damage to life or property due to debris, and fire extinguishing agents are not sufficiently ejected. are doing

Therefore, a solution to the above problems is urgently required.

Korean Registered Patent No. 10-1606921

The present invention, as devised to solve the above problems of the prior art,

Since it has a simple structure, it is manufactured at low cost, has a low defect rate, has excellent operation reliability and safety reliability, and has excellent fire extinguishing effect because most of the loaded fire extinguishing agent is stably ejected. intended to provide

In order to achieve the above object, the present invention

Including a fire extinguishing agent loading box and a parachute provided on top of the fire extinguishing agent loading box,

The fire extinguishing agent loading box has an explosion device unit and an extinguishing agent loading unit therein,

The explosive device has a piezoelectric element connected to the parachute,

The piezoelectric element is operated by the amount of impact generated when the parachute is opened to generate electricity, and the explosion device unit explodes by the generated electricity to provide a fire extinguishing device that ejects the loaded fire extinguishing agent.

In one embodiment of the present invention, the explosion device unit is located in the center of the fire extinguishing agent loading box, and the fire extinguishing agent loading unit may be formed around the explosion device unit.

In one embodiment of the present invention, the fire extinguishing agent loading box may be formed of a ceramic material, and the ceramic material may be at least one selected from the group consisting of gypsum, ceramics, geopolymer, and mortar.

In one embodiment of the present invention, uniformly formed cutting grooves may be formed on at least one of an inner surface and an outer surface of the fire extinguishing agent container made of the ceramic material so as to be dispersed into uniform pieces during an explosion.

In one embodiment of the present invention, the upper part of the fire extinguishing agent loading box equipped with the parachute may be formed as a convex hemisphere-like curved surface portion so that air can climb.

In one embodiment of the present invention, the fire extinguishing agent loading box further includes one or more airbags therein, and the airbag is inflated by combustion gas generated when the explosion device explodes to explode the fire extinguishing agent loading box to eject the fire extinguishing agent. .

In one embodiment of the present invention, the explosive device unit may include a point explosive (detonation charge) triggered by electricity generated from a piezoelectric element.

Since the fire extinguishing device of the present invention has a simple structure, it can be manufactured at a low cost, and provides a low defect rate, excellent operational reliability and safety.

In addition, since most of the loaded fire extinguishing agent is stably ejected, it provides an excellent effect in suppressing the fire.

1 is a cross-sectional view schematically showing an embodiment (parachute folded state) of a fire extinguishing device of the present invention.
Figure 2 is a cross-sectional view schematically showing one embodiment (parachute deployed state) of the fire extinguishing device of the present invention.
3 is a cross-sectional view schematically showing the operation process of the fire extinguishing device of the present invention.
4 is a cross-sectional view schematically showing an embodiment of the fire extinguishing agent loading box of the fire extinguishing device of the present invention.
5 and 6 are diagrams schematically showing the airdrop process of the fire extinguishing device of the present invention.
7 is a cross-sectional view schematically showing the front part of the transfer and discharge container of the fire extinguishing device of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Like reference numerals have been assigned to like parts throughout the specification.

The fire extinguishing device of the present invention will be described with reference to the drawings of FIGS. 1 to 7.

The fire extinguishing device of the present invention includes a fire extinguishing agent loading box 10 and a parachute 20 provided on the top of the fire extinguishing agent loading box, and the fire extinguishing agent loading box 10 has an explosion device 30 and a fire extinguishing agent loading part 40 therein The explosive device unit 30 includes a piezoelectric element 32 connected to the parachute 20, and the piezoelectric element 32 is operated by an amount of impact generated when the parachute is opened to generate electricity, , It is characterized in that the explosion device part is exploded by the generated electricity to eject the loaded fire extinguishing agent.

When a fire such as a forest fire occurs, a firefighter responds by directly spraying water or extinguishing fluid onto the flame, throwing a fire extinguisher at a short distance, or administering water or extinguishing agent using a helicopter. The method using a helicopter, which is the most advanced method among the above countermeasures, is very effective, but a fire extinguishing device optimized for helicopter administration has not yet been developed.

In other words, firearms using the principle of a time bomb, firearms using a distance measurement sensor, firearms using a temperature sensor, etc. have been introduced, but they lack reliability for efficient operation when used and lack reliability for safety. situation. For example, the conventional fire extinguishing device does not explode in the air and has a high defect rate falling to the ground, and when an explosion occurs, only a part of the fire extinguishing device is destroyed, causing damage to life or property due to debris, and the fire extinguishing agent is not sufficiently ejected. are doing

The fire extinguishing device of the present invention has features of high reliability for efficient operation and safety by using a parachute and a piezoelectric element operated by it. In addition, the fire extinguishing agent loading box has a feature of being configured to be destroyed in small units.

In one embodiment of the present invention, the shape of the parachute 20 is not particularly limited, and a known type of parachute may be used. For example, in addition to a normal single parachute, a two-stage parachute in which a pilot shot and a main shot are connected in series, a parachute in which a plurality of parachutes are arranged in parallel, a parasail, and the like can be used.

As shown in FIGS. 1 and 2, the parachute 20 is provided in a folded state on the top of the fire extinguishing agent loading box 10 before use, and when a fire extinguishing device is dropped to extinguish a fire, it is unfolded by air resistance .

In one embodiment of the present invention, the piezoelectric element means an element that generates electricity when an external force is applied. As the piezoelectric element, a piezoelectric element known in the art may be used without limitation. That is, any type of piezoelectric element can be used as long as it can generate electricity by an external force (impact amount) applied to the piezoelectric element when the parachute is opened.

In the fire extinguishing device of the present invention, the piezoelectric element 32 is connected to the parachute 20 in a folded state by a connection line. When an explosive device is dropped from a helicopter or the like, the parachute is opened due to air resistance, and at this time, a large external force (impact amount) is instantaneously generated in the piezoelectric element 32 by the connection line of the parachute 20. This external force presses the piezoelectric element to generate electricity.

In the above, the parachute and the piezoelectric element may be connected through various types of connection lines, and may be connected through, for example, ropes, wires, and the like. The connection line is connected in a form capable of applying pressure to the pressing part of the piezoelectric element, and, if necessary, may be connected to the piezoelectric element through a common device capable of effectively pressurizing the pressing part of the piezoelectric element.

In one embodiment of the present invention, the explosion device unit 30 may be located in the center of the fire extinguishing agent loading box 10, as shown in FIGS. 1 to 3, in this case the fire extinguishing agent loading unit 40 May be formed around the explosive device. However, the explosion device unit 30 and the fire extinguishing agent loading unit 40 may be provided inside the fire extinguishing agent loading box 10 in various forms, and are not limited to the above structures. For example, the explosive device unit 30 is located at the bottom or top of the fire extinguishing agent loading box 10, and the fire extinguishing agent loading unit 30 may be located on the opposite side of the explosive device unit.

The explosive device unit 30 may be fixed to the fire extinguishing agent loading box 10 by a conventional fixing member or by an adhesive material.

In one embodiment of the present invention, the explosive device unit 30 may include a detonator 32 that is detonated by electricity generated from the piezoelectric element 32.

As the detonator 32, any detonator known in the art may be used without limitation as long as it is an electrically operated detonator. In addition, a device capable of amplifying electricity in addition to electricity generated by the piezoelectric element 32 or supplying additional power may be provided. In addition, an explosion delay material for delaying the explosion time may be further included.

The detonator 32 may further include a point explosive (or detonator) that primarily performs detonation. However, point explosives may not be included in the case of direct ignition of the combustible material 36, which causes a major explosion or rapidly generates a large amount of gas.

In addition, the fire extinguishing device of the present invention may not include a separate detonator because the piezoelectric element serves as a detonator when it is possible to directly ignite the combustion material 36 by the piezoelectric element 32. there is.

The combustion material may include a generally used gunpowder or a gas generating material that rapidly generates a large amount of gas. The gas generating material may be selected when the airbag principle is employed in the fire extinguishing device of the present invention.

As the gas generating material, materials known in this field may be used without limitation, and for example, inorganic azide, for example, an azide-based gas generating agent by sodium azide (sodium azide), inorganic azide A non-azide-based gas generating agent or the like can be used. Examples of the non-azide-based gas generating agent include, for example, compositions containing nitrogen-containing organic compounds such as tetrazole, triazole, or metal salts thereof, and oxygen-containing oxidizing agents such as alkali metal nitrates as main components; Various materials known in this field may be used, such as compositions using triaminoguanidine nitrate, carbohydroazide, nitroguanidine, etc. as fuel and nitrogen sources, and nitrates, chlorates, perchlorates, etc. of alkali metals or alkaline earth metals as oxidizing agents. can

In one embodiment of the present invention, the fire extinguishing agent loading part 40 is located in a place where the fire extinguishing agent can be easily ejected by an explosion. Various types of fire extinguishing agents used in this field may be loaded in the fire extinguishing agent loading unit 10, and the type of the fire extinguishing agent is not particularly limited. Examples of the extinguishing agent include a water-based extinguishing agent, a gas-based extinguishing agent, a powder extinguishing agent, and a foam extinguishing agent.

The fire extinguishing agent itself may be located in the fire extinguishing agent loading unit 40 or may be located in the fire extinguishing agent loading unit in a form accommodated in another container.

In one embodiment of the present invention, the fire extinguishing agent loading box 10 may be made of various materials known in the art. In particular, the fire extinguishing agent loading box may be formed of a ceramic material, and the fire extinguishing agent loading box made of the ceramic material stably protects the fire extinguishing agent loading portion and the explosive device during storage, and is easily decomposed into small pieces by explosion during use. This is preferable because most of the fire extinguishing agent can be easily ejected. In addition, the small size of the wreckage also provides excellent safety.

As the ceramic material, gypsum, ceramics, geopolymer, mortar, and the like may be preferably used. The ceramic materials are preferable because they have the strength to protect the fire extinguishing device from being destroyed in normal times, but are easily destroyed when an explosion occurs inside. In addition, the materials can provide desirable effects in terms of cost.

In one embodiment of the present invention, as the fire extinguishing agent loading box 10, as shown in FIG. 4, it is formed uniformly on any one or more of the inner surface and the outer surface so that it can be dispersed into uniform pieces when exploded. The one formed with the cutting groove 78 may be preferably used. That is, when the fire extinguishing device explodes, when the fire extinguishing agent loading box 10 is not entirely chopped and dispersed, but only partially destroyed, the fire extinguishing agent loading box wreckage may cause human life or property damage, and such debris prevents the release of fire extinguishing agent by explosion. Therefore, in the present invention, the fire extinguishing agent loading box 10 is provided with uniformly formed cutting grooves 78 to increase safety and ejection efficiency of the fire extinguishing agent. The shape of the cutting groove 78 is not particularly limited, and can be formed in any shape as long as it weakens the strength of the portion where the cutting groove is formed.

In one embodiment of the present invention, the upper part of the fire extinguishing agent loading box 10 equipped with a parachute may be formed as a convex hemisphere-like curved surface portion so that air can ride, as shown in FIGS. 1 to 3 . In addition, furthermore, the fire extinguishing agent loading box 10 of the present invention may be manufactured in a spherical shape. However, it is not limited thereto, and may be manufactured in a polygonal column-like shape or the like.

In one embodiment of the present invention, the fire extinguishing agent loading box 10 may further include one or more airbags therein, and the airbags are inflated by combustion gas generated when the explosion device explodes to destroy the fire extinguishing agent loading box, It performs the function of pushing and ejecting the fire extinguishing agent. The above description may be applied to a combustion material for inflating the airbag, and a configuration for inflating the airbag may borrow a configuration of an airbag implemented in a conventional vehicle. The airbag may be functionally advantageous to be formed in a donut shape, and in this case, the explosion device unit may be located in an empty space in the center of the donut.

As shown in FIGS. 5 and 6, the fire extinguishing device of the present invention can be used in a form that is dropped using a helicopter. However, it is not limited to such a throwing form, and may be used in a form thrown by various throwing forms, including a form launched into the air by a projectile.

In the case of dropping using a helicopter, it may be effective to simultaneously drop several fire extinguishing devices of the present invention.

For this simultaneous drop, the present invention provides a fire extinguishing device transfer and drop container 70 as shown in FIGS. 5 and 7 . The shape of the container may be manufactured in a polygonal column shape of various shapes, but is not limited thereto.

The container 70 may accommodate two or more fire extinguishing devices by arranging them in various forms, for example, by stacking them in two or more rows. As shown in FIG. 5 , the container may further include a container open door 72 at a lower portion. The container open door as described above makes it possible to easily drop several fire extinguishing devices at once. If the fire extinguishing device of the present invention is dropped into the air, the parachute is easily deployed, so it can be operated reliably even when using such a container. Also, due to these characteristics, it can be usefully used for large-scale agents such as forest fires.

Also, as shown in FIG. 6 , the container 70 may have an open door 72 at the front of the container. In this configuration, it is easier to drop the fire extinguishing device if the fire extinguishing device is of a spherical-like shape.

In addition, the container 70 may further include a band 74 provided to fix the fire extinguishing device. The band may be formed in one or more directions selected from horizontal and vertical directions. In addition, the container 70 may further include a band fixation release device (FIG. 7, 76) capable of automatically releasing the fixation of the band.

Preferred embodiments have been presented above to aid understanding of the present invention, but this is only an illustration of the present invention, and it is obvious to those skilled in the art that various changes and modifications are possible within the scope and spirit of the present invention, and these changes And it goes without saying that modifications fall within the scope of the appended claims.

10: extinguishing agent loading box 20: parachute
30: explosive device 32: piezoelectric element
34: detonator 36: combustion ash
40: fire extinguishing agent loading unit 70: transfer and drop container
72: container open door 74: band
76: band lock release device

Claims (6)

Including a fire extinguishing agent loading box and a parachute provided on top of the fire extinguishing agent loading box,
The fire extinguishing agent loading box has an explosion device unit and an extinguishing agent loading unit therein,
The explosive device has a piezoelectric element connected to the parachute,
The piezoelectric element is operated by the amount of impact generated when the parachute is opened to generate electricity, and the explosive device unit explodes by the generated electricity to eject the loaded fire extinguishing agent,
The explosive device includes a detonator that is detonated by electricity generated from a piezoelectric element,
The extinguishing agent loading box is formed of a ceramic material,
The extinguishing agent loading box is a fire extinguishing device in which a uniformly formed cutting groove is formed on at least one of the inner surface and the outer surface so that it can be dispersed into uniform pieces during an explosion. According to claim 2,
The explosive device is located in the center of the fire extinguishing agent loading box, and the fire extinguishing device, characterized in that the fire extinguishing agent loading portion is formed around the explosion device. According to claim 1,
The ceramic material is a fire extinguishing device, characterized in that at least one selected from the group consisting of gypsum, ceramics, geopolymer and mortar. According to claim 1,
The fire extinguishing device, characterized in that the upper part of the fire extinguishing agent loading box equipped with the parachute is formed as a convex hemisphere-like curved surface so that air can ride. According to claim 1,
The extinguishing agent loading box further includes one or more airbags therein, and the airbags are inflated by combustion gas generated when the explosion device explodes to explode the extinguishing agent loading box to eject the extinguishing agent. According to claim 1,
The detonator is a fire extinguishing device, characterized in that it comprises a point explosive that is ignited by electricity.

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