KR200452292Y1 - Fire extinguisher of explosive powder type - Google Patents

Abstract

The present invention relates to an explosive powder fire extinguisher, which includes a closed body; Digestive powder contained in the sealed body; And a gas generator contained in the sealed body and decomposed at a predetermined temperature to generate a gas. The fire extinguisher is simple in structure, economical and can automatically detect, extinguish and extinguish a fire early.

Explosive powder fire extinguisher

Description

Fire extinguisher of explosive powder type

The present invention relates to a fire extinguisher, and more particularly to an explosive powder fire extinguisher.

 In the case of a fire, a fire caused by electricity accounts for a large part of the fire gun, and a fire occurs frequently due to a short circuit in an electrical outlet, a switch box, a light fixture, or an electronic product. In addition, if a fire occurs in an unattended or uninhabited area, the fire will progress to some extent after the upper time has elapsed since the fire has occurred and the temperature should rise and the smoke and flame should be activated so that a fire detector occurs and the fire extinguishing facility operates. Since it was mature, there were many difficulties in suppression. In particular, most of the fire-extinguishing facilities are installed on the ceiling has a significant distance from the electrical equipment that is the ignition point of the fire, there was a problem that does not detect the fire early or the fire suppression is not properly made. Therefore, various researches have been made on the automatic fire extinguishing apparatus so as to recognize the fire at an early stage to block the spread of the fire and extinguish the fire. However, most of the automatic fire extinguishing systems are complicated and the economical price of the fire detection signal is high.

Accordingly, the problem to be solved of the present invention is to provide an explosive powder fire extinguisher that is simple in structure and high in economical efficiency and can automatically detect and extinguish a fire early.

In order to achieve the object to be solved, the explosive powder fire extinguisher according to the present invention is a sealed body; Digestive powder contained in the sealed body; And a gas generator contained in the sealed body and decomposed at a predetermined temperature to generate a gas.

The cross section of the body may be any one of streamlined, circular, cylindrical or elliptical. An incision may be formed in the body.

The gas generating agent preferably occupies 1/11 to 1/3 of the total internal volume of the body. The gas generating agent may be located at an intermediate or distal portion of the body. The explosive powder extinguisher is preferably mounted at an angle of 0 to 60 degrees with respect to the horizontal. The body may be made of at least one selected from the group consisting of glass, plastic, or metal.

The explosive powder fire extinguisher may further include a polymer layer covering the surface of the body. The polymer layer is, for example, polyethylene (PE), polypropylene (polypropylene, PP), polystyrene (PS), polyvinyl chloride (polyvinyl chloride, PVC), and polyethylene terephthalate (polyethyleneterephthalate, PET). It may be at least one selected from the group including).

The digestive powder may be at least one of Pirant A (TU 301-11-10-90) and PSB-3 (TU 6-18-139-83). The gas generating agents include azodicarbonamide, zinc oxide, N, N'-dinitroso pentamethylene tetramine, and ε-ureidocapronic acid (ε- ureidocapron acid) may be at least one selected from the group containing. The gas generating agent may be in powder form, for example.

Therefore, the explosive powder type fire extinguisher according to the present invention, when the fire occurs, the internal temperature of the fire extinguisher is increased by the heat of the fire, the gas generating agent starts to decompose at a predetermined temperature or more, nitrogen, carbon dioxide, carbon monoxide, C ₂ H ₂ N ₄ O _2, gas is generated in the internal pressure of the extinguisher is increased, whereby the fire extinguisher is explosion (destruction), the fire extinguishing powder was within the extinguisher is ejected out can be digested and the fire . As a result, the explosive powder fire extinguisher of the present invention automatically detects and extinguishes a fire early.

The explosive powder type fire extinguisher according to the present invention has a simple structure because the extinguishing powder and the gas generating agent are accommodated in a layered body. In addition, since the gas generating agent decomposes and extinguishes a fire by using a property of generating gas by decomposing at a predetermined temperature or more, it is very economical because it does not require an expensive fire detection signal device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed contents may be thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art.

1-3 illustrate cross-sectional views of spherical, cylindrical and elliptical powder fire extinguishers, respectively, in accordance with embodiments of the present invention.

1 to 3, the explosive powder type fire extinguisher according to the present invention, the fire extinguishing powder 10 and the gas generating agent 20 is contained in the sealed body (100, 200, 300). The cross section of the body (100, 200, 300) may be implemented in any one form of circular, cylindrical or elliptical. The body 100, 200, 300 may be made of at least one selected from the group consisting of glass, plastic, or metal. Incisions 102, 202, 302 are formed in the bodies 100, 200, 300, and later, when the bodies 100, 200, 300 are destroyed, by the incisions 102, 202, 302. This is to make it easy. Preferably, the incisions 102, 202, 302 are evenly distributed throughout the body 100, 200, 300 so that the body 100, 200, 300 may be evenly destroyed afterwards. The surface of the body 100, 200, 300 may be coated with a polymer layer 110 so that sharp debris is not formed by the incisions 102, 202, 302. The polymer layer 110 is, for example, polyethylene (PE), polypropylene (polypropylene, PP), polystyrene (PS), polyvinyl chloride (PVC), and polyethylene terephthalate (polyethyleneterephthalate, PET) may be at least one selected from the group containing.

The extinguishing powder 10 and the gas generating agent 20 may be distributed in the body (100, 200, 300) to form two to three layers vertically or horizontally. In the present exemplary embodiment, the extinguishing powder 10 and the gas generating agent 20 are 2 to 3 vertically or horizontally, but it will be apparent to those skilled in the art that more layers may be formed.

The digestive powder 10 may be at least one of Pirant A (TU 301-11-10-90) and PSB-3 (TU 6-18-139-83). Pirant A is a kind of non-aggregated digested powder having a particle size of 20 μm or less. The gas generator 20 may be located at the middle or the distal portion of the body (100, 200, 300). The gas generator 20 preferably occupies 1/11 to 1/3 of the total internal volume of the body 100, 200, 300. The gas generating agent 20 is, for example, in the form of a powder, azodicarbonamide, zinc oxide, N, N'-dinitroso pentamethylene tetramine (N, N'-dinitroso pentamethylene tetramine) And ε-ureidocapron acid (ε-ureidocapron acid) may be at least one selected from the group containing. Specifically, the gas generator 20 may be azodicarbonamide. The azodicarbonamide is decomposed at about 200 ° C. to produce gases such as nitrogen, carbon monoxide, carbon dioxide, and C ₂ H ₄ N ₄ O ₂ . The gas generator 20 may be a mixture including about 80% by weight of azodicarbonamide, about 10% by weight of zinc oxide and the others, which may be decomposed at about 150 ° C., such as nitrogen, carbon dioxide, or the like. Generate gas. Or the gas generating agent 20 is 30% by weight of azodicarbonamide, 10% by weight of zinc oxide, 30% by weight of N, N'-dinitroso pentamethylene tetramine (N, N ' It may be a mixture containing -dinitroso pentamethylene tetramine and 30% by weight of ε-ureidocapron acid, which is decomposed at about 95 ℃ to produce a gas such as nitrogen, carbon dioxide.

The explosive powder extinguisher may be fixed horizontally or vertically or inclined with respect to the surface on which the gas generating agent 20 is placed. Preferably mounted at an angle of 0 to 60 degrees with respect to the horizontal.

The explosive powder extinguisher works as follows. When the fire extinguisher is located in the location where the fire extinguisher is located, the body (100, 200, 300) is heated, when the predetermined temperature (for example, 95 ℃, 150 ℃, or 200 ℃) reaches the gas generating agent (20) ) Is decomposed into gas in an irreversible state, and the pressure inside the bodies 100, 200, and 300 is increased, and the bodies 100, 200, and 300 are exploded along the cut lines 102, 202, and 302. Destroyed) and the extinguishing powder 10 is ejected to the ignition source to extinguish and extinguish the fire.

Experimental Example

First, a round dish having an area of 0.4 m ² was placed on the bottom of a metal booth having a volume of 1.6 m, 1.6 m, and 2.0 m in height of 5.12 m ³ , and a sawdust layer was formed on the dish with a height of 4 cm. And 2 liters of gasoline was poured into the sawdust layer and fired. The fire extinguisher was suspended from the dish under the booth ceiling 1.8 m high. The fire extinguishers were fire extinguishers having a cross section of any one of spherical, cylindrical, and elliptical shapes, respectively, shown in FIGS. 1 to 3, wherein the gas generator occupies a volume fraction occupied within the body and the slope of the extinguisher horizontally. According to the change whether the fire can be extinguished, and the time it takes for the extinguisher to explode from the point of ignition, that is, the reaction time was investigated and listed in Tables 1 to 3 below.

Table 1. Spherical explosive powder fire extinguisher

Experiment
number Gas generator volume fraction Product tilt Reaction time
(second) digestion
result 1/2 1/3 1/7 1/11 1/13   0 ° 30 ° 60 °  90 ° One O O 50 Indigestion 2 O O 52 Digested 3 O O 54 Digested 4 O O 48 Digested 5 O O 45 Indigestion 6 O O 43 Digested 7 O O 40 Digested 8 O O 35 Indigestion

Table 2. Cylindrical explosive powder fire extinguisher

Experiment
number Gas generator volume fraction Product tilt Reaction time
(second) digestion
result 1/2 1/3 1/7 1/11 1/13   0 °  30 °  60 °  90 ° One O O 40 Indigestion 2 O O 45 Digested 3 O O 38 Digested 4 O O 47 Digested 5 O O 115 Indigestion 6 O O 44 Digested 7 O O 48 Digested 8 O O 240 Indigestion

Table 3. Oval Explosive Powder Fire Extinguisher

Experiment
number Gas generator volume fraction Product tilt Reaction time
(second) digestion
result 1/2 1/3 1/7 1/11 1/13 0 ° 30 ° 60 ° 90 ° One O O 48 Indigestion 2 O O 44 Digested 3 O O 50 Digested 4 O O 38 Digested 5 O O 120 Indigestion 6 O O 45 Digested 7 O O 50 Digested 8 O O 200 Indigestion

Looking at Tables 1 to 3, it can be seen that when the volume fraction of the gas generating agent exceeds 1/3, the volume of the extinguishing powder in the body of the extinguisher decreases, so that the amount of the extinguishing powder is insufficient and the fire is not extinguished. . On the other hand, when the gas generating agent volume fraction is 1/13, it can be seen that the reaction time is relatively long. When the fire extinguisher was inclined more than 60 °, the reaction time was long. Thus, through Tables 1-3, preferred conditions are that gas generators are accommodated to occupy 1/11 to 1/3 of the total internal volume of the fire extinguisher body, and explosive powder extinguishers are preferably 0 to horizontal. It can be seen that it should be mounted at an angle of 60 °.

1 is a cross-sectional view of an explosive powder fire extinguisher according to an embodiment of the present invention.

2 is a cross-sectional view of an explosive powder fire extinguisher according to another embodiment of the present invention.

3 is a cross-sectional view of an explosive powder fire extinguisher according to another embodiment of the present invention.

Claims (11)

Closed body; Digestive powder contained in the sealed body; And It is contained in the hermetic body and includes a gas generating agent that decomposes at a predetermined temperature to produce a gas, wherein the gas generating agent occupies 1/11 to 1/3 of the total internal volume of the body Powdered Fire Extinguisher. The method of claim 1, Cross section of the body is explosive powder fire extinguisher, characterized in that any one of streamline, circular, cylindrical or oval. The method of claim 1, An explosive powder fire extinguisher, characterized in that the incision is formed in the body. delete The method of claim 1, The gas generating agent is explosive powder fire extinguisher, characterized in that located in the middle or end portion of the body. The method of claim 1, The explosive powder fire extinguisher, characterized in that the explosive powder fire extinguisher is mounted at an angle of 0 ~ 60 ° with respect to the horizontal. The method of claim 1, The body is explosive powder fire extinguisher, characterized in that at least one selected from the group consisting of glass, plastic, or metal. The method of claim 1, Explosive powder type fire extinguisher further comprising a polymer layer covering the surface of the body. The method of claim 8, The polymer layer may be selected from the group consisting of polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), and polyethylene terephthalate (PET). Explosive powder fire extinguisher, characterized in that at least one selected. The method of claim 1, The extinguishing powder is at least one of Pirant A (TU 301-11-10-90) and PSB-3 (TU 6-18-139-83) explosive powder type fire extinguisher. The method of claim 1, The gas generating agents include azodicarbonamide, zinc oxide, N, N'-dinitroso pentamethylene tetramine, and ε-ureidocapronic acid (ε- ureidocapron acid) explosive powder fire extinguisher, characterized in that at least one selected from the group containing.

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