Throwing fire extinguishers

Abstract

To provide a throwable fire extinguishing device that enables extinguishing metal fires from a greater distance. [Solution] The throwable fire extinguishing device 1 is equipped with a shape-retaining part 3 made of resin film, and a fire extinguishing agent 2 containing a solid metal fire extinguishing agent, such as dry sand, is sealed in the shape-retaining part 3, and the fire extinguishing agent 2 is shaped into a plate or disc. It is also possible to further provide reinforcing parts 4 on the upper and / or lower surfaces of the shape-retaining part 3, and it is also possible to vent the inside of the shape-retaining part 3.

Description

Technical Field

[0001] The present invention relates to a throwable fire extinguishing device.

Background Art

[0002] For metal fires caused by metals such as magnesium, the method of spraying fire extinguishing water is inappropriate because when the fire extinguishing water contacts the high-temperature metal surface, steam explosions and the generation of flammable hydrogen may occur, and the damage may expand. Therefore, conventionally, for metal fires, a bucket with dry sand and a scoop are used to approach the combustibles, and the dry sand is applied to the combustibles with the scoop to extinguish the fire (see, for example, Non-Patent Document 1).

Prior Art Documents

Non-Patent Documents

[0003]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in extinguishing fires by the conventional method of applying dry sand to the combustibles with a scoop, it is necessary to approach at least 1 m to 1.5 m from the combustibles. However, when the scale of the fire is large, it becomes difficult to approach the combustibles due to the radiant heat. Therefore, in extinguishing fires by the conventional method of applying dry sand to the combustibles with a scoop, it may be difficult to extinguish the fire.

[0005] Therefore, the present invention aims to provide a throwable fire extinguishing device that enables extinguishing metal fires from a greater distance. [Means for solving the problem]

[0006] The present invention relates to a throwable fire extinguishing device comprising a fire extinguishing agent containing a solid metal fire extinguishing agent, which is shaped into a plate or disc.

[0007] Furthermore, the present invention may include a shape-retaining section made of resin film, and the fire extinguishing agent may be sealed within the shape-retaining section. The present invention may also include a reinforcing section, which may be provided at least on the upper and / or lower surfaces of the shape-retaining section. Furthermore, the present invention may be configured such that the inside of the shape-retaining section is degassed. Additionally, the present invention may use dry sand as the fire extinguishing agent for metal fires. [Effects of the Invention]

[0008] This invention provides a throwable fire extinguishing device that allows for fire extinguishing from a greater distance, by maintaining the shape of the fire extinguishing agent, which contains a solid metal fire extinguishing agent, into a plate or disc shape. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of the first embodiment of the present invention. [Figure 2] This is a perspective view of a second embodiment of the present invention. [Modes for carrying out the invention]

[0010] A first embodiment of the present invention will be described with reference to Figure 1. The throwable fire extinguishing device 1 contains a solid metal fire extinguishing agent 2 (hereinafter abbreviated as fire extinguishing agent 2), and the fire extinguishing agent 2 is formed in a plate shape. In this embodiment, the fire extinguishing agent 2 is formed in a disc shape.

[0011] Fire extinguishing agent 2 is a solid fire extinguishing agent applicable to fires caused by hazardous materials of Class II as defined by the Fire Service Act, such as iron powder, metal powder, magnesium, or materials containing any of these. In this embodiment, it is dry sand.

[0012] In this embodiment, the throwable fire extinguishing device 1 is equipped with a shape-retaining section 3, and the fire extinguishing agent 2 is sealed within the shape-retaining section 3 to maintain its shape. The material forming the shape-retaining section 3 can be appropriately selected, but for example, it can be made of resin, and in particular, it is preferable that it be made of resin film. Furthermore, since it is preferable that the fire extinguishing agent 2 be kept in a dry state, it is preferable that the inside of the shape-retaining section 3 is degassed.

[0013] From the viewpoint of ease of throwing, the throwable fire extinguishing device 1 preferably has a diameter of 20 cm or more and 50 cm or less, and a thickness of 1 cm or more and 3 cm or less. In this embodiment, the shape-retaining portion 3 has a diameter of 20 cm to 50 cm and a thickness of 1 cm to 3 cm.

[0014] When a metal fire, such as a magnesium fire, occurs, if the fire is small and it is possible to approach the burning material to within approximately 1 m to 1.5 m, the throwable fire extinguishing device 1 is placed on the burning material so as to cover it. If the fire is large and it is difficult to approach the burning material, the throwable fire extinguishing device 1 is thrown from a distance towards the burning material so as to cover it.

[0015] In this case, because the throwable fire extinguisher 1 is plate-shaped, it can be thrown towards the burning material from a distance of approximately 3 to 5 meters. As in this embodiment, if the throwable fire extinguisher 1 is disc-shaped, it can be thrown more easily. In either case, the burning material is covered by the throwable fire extinguisher 1. Furthermore, if the burning material is in a container such as a drum, it is also possible to place the throwable fire extinguisher 1 on top of the container so as a lid.

[0016] Then, the throwable fire extinguishing device 1, which is covered over the burning material, has its shape-retaining section 3 melt or burn due to the heat of the fire, etc., and the extinguishing agent inside is released onto the burning material. The extinguishing agent then prevents contact between the burning material and oxygen, thereby suffocating and extinguishing the fire.

[0017] In this case, it is preferable that the shape-retaining part 3 is made of a resin film, as in this embodiment. A resin shape-retaining part 3 is excellent in terms of ease of shape retention, but since it is flammable, it is preferable to use as little resin as possible, and by making it a resin film, it is possible to reduce the amount of resin used.

[0018] Furthermore, as a secondary effect resulting from the plate-like shape of the throwable fire extinguisher 1, in order to extinguish metal fires more efficiently, it is ideal to form a layer of extinguishing agent 2 on the burning material. By making it plate-like, for example, compared to a spherical shape, it is easier to place the throwable fire extinguisher 1 on the burning material, thus making it easier to form a layer of extinguishing agent 2 and enabling faster extinguishing. For this reason, it is more preferable for the throwable fire extinguisher 1 to be flat in shape in order to make it easier to place the throwable fire extinguisher 1 on the burning material.

[0019] A second embodiment of the present invention will be described with reference to Figure 2. The difference between this embodiment and the first embodiment is the addition of a reinforcing portion 4. Components that have the same reference numerals as in the first embodiment are the same as in that embodiment, so their description will be omitted.

[0020] In this embodiment, the throwable fire extinguishing tool 1 is further equipped with a reinforcing section 4. The reinforcing section 4 is provided to further ensure the strength of the throwable fire extinguishing tool 1, particularly the shape-retaining section 3, and can be provided, for example, on the upper and / or lower surfaces of the shape-retaining section 3. The shape of the reinforcing section 4 can be selected as appropriate, but for example, it can be cross-shaped or star-shaped (*). In this embodiment, a star shape is adopted.

[0021] As an effect caused by providing the reinforcing portion 4, even if the thickness of the shape-retaining portion 3 is made thinner, it is possible to retain the fire extinguishing agent in a plate shape, and it is possible to further reduce the amount of resin used for the shape-retaining portion 3. Also, by reducing the thickness of the shape-retaining portion 3, the mass of the throwable fire extinguishing tool 1 can be reduced, making it easier to throw.

[0022] Although the present invention has been described based on the above-described embodiment, the present invention is not limited to the above-described embodiment and can be appropriately modified without changing the gist of the invention.

[0023] (1) As the fire extinguishing agent for solid metal fires, it can be appropriately selected. In addition to dry sand, expanded vermiculite, expanded perlite, sodium chloride, sodium silicate, and other fire extinguishing agents can be used, or these fire extinguishing agents can be mixed and used.

[0024] (2) The shape of the throwable fire extinguishing tool 1 is not limited to a disc shape, and can be a square plate shape, for example, a polygonal plate shape such as a square plate shape or a pentagonal plate shape. Also, a disc shape, for example, a disc shape like a frisbee, can be adopted, and it does not matter whether it is vertically symmetric.

[0025] (3) In addition to the fire extinguishing agent for solid metal fires, a powder fire extinguishing agent used for extinguishing general fires, for example, ammonium phosphate, etc., may be contained. When the combustibles in a metal fire include swarf generated during metal cutting, etc., since combustibles such as cutting oil used during cutting are attached to the swarf, it is assumed that the combustibles are also burning together with the metal. By mixing the powder fire extinguishing agent, it becomes possible to quickly extinguish the combustion of the combustibles.

Explanation of Reference Numerals

[0026] 1 Throwable fire extinguishing tool 2 Fire extinguishing agent 3 Shape-retaining portion 4 Reinforcing portion

Claims

1. A throwable fire extinguishing device comprising a fire extinguishing agent containing a solid metal fire extinguishing agent, which is shaped into a plate or disc.

2. Equipped with a shape-retaining section made of resin film, The throwable fire extinguishing device according to claim 1, characterized in that the fire extinguishing agent is sealed within the shape-retaining portion.

3. Further reinforced sections are provided. The throwable fire extinguishing device according to claim 2, characterized in that the reinforcing portion is provided at least on the upper and / or lower surface of the shape-retaining portion.

4. The throwable fire extinguishing device according to claim 2 or 3, characterized in that the inside of the shape-retaining portion is degassed.

5. The throwable fire extinguishing device according to any one of claims 1 to 3, characterized in that the fire extinguishing agent for metal fires is dry sand.

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