Fire extinguisher

Abstract

The invention relates to a fire extinguisher. The fire extinguisher comprises a fire extinguisher body, a heat exchanging device, a transmission device and a high-pressure gas conveying pipe, wherein the fire extinguisher body comprises a first circular pipe and a second circular pipe, the first circular pipe sleeves the second circular pipe, an outer cavity is formed between the first circular pipe and the second circular pipe, an inner cavity is formed in the second circular pipe, the heat exchanging device is mounted in the outer cavity, the transmission device is mounted in the inner cavity, one end of the high-pressure gas conveying pipe is connected with one end of the fire extinguisher body, and the other end of the high-pressure gas conveying pipe penetrates the heat exchanging device and detachably fixedly connected with the transmission device. The fire extinguisher has the advantages that high-pressure gas is used as the transmission source and the cooling source, low-temperature low-oxygen fire source waste gas is used as the fire extinguishing medium and directly acts on the center of a fire source through cooling, the fire source temperature can be lowered while the oxygen around the fire source can be isolated, and fast fire extinguishing is achieved; the fire extinguisher is low in air density, large in flow and free of liquid pollution during fire extinguishing, so that the fire extinguisher can efficiently and continuously extinguish fire and does not cause secondary damage to property.

Description

technical field [0001] The invention belongs to the technical field of fire fighting equipment, and in particular relates to a fire extinguisher. Background technique [0002] Existing fire extinguishing equipment cannot extinguish various fires quickly, safely and effectively, and often a large fire needs several hours or even several days to be extinguished, thus causing huge losses to people's lives and properties. Fire extinguishing equipment has been far from being able to adapt to the needs of fire safety in modernized cities and factories. To extinguish fire, soldiers should be extremely quick. It takes a very short time to extinguish the fire. According to the principle of fire, the air pressure at the center of the fire is low and the air pressure around it is high, so that a large amount of air around moves to the fire source. Under the combustion-supporting effect of the air, the fire burns bigger and bigger, which increases the difficulty of fire extinguishing. ...

AI Technical Summary

Problems solved by technology

According to the principle of fire, the air pressure at the center of the fire is low and the air pressure around it is high, so that a large amount of air around moves to the fire source. Under the combustion-supporting effect of the air, the fire burns bigger and bigger, which increases the difficulty of fire extinguishing. Water can cool down and extinguish the fire. Foam or carbon dioxide can isolate the fire, but the effect is not satisfactory, and if the fire is too large during the fire extinguishing process, the fire extinguisher will be easily heated, causing the fire extinguisher to explode, resulting in personal injury

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