Patent ID: 11951343
Assignee: BEIJING INSTITUTE OF TECHNOLOGY
Field: Environmental technology (Chemistry)
Classification: CPC A  Y | IPC A

Claim 0:
1. A temperature-sensitive automatic rapid gas generation fire extinguishing device, comprising a box body, wherein a plurality of ventilation holes are formed on opposite side walls of the box body, and a first baffle and a second baffle are vertically and slidably connected to opposite outer side walls of the box body respectively; a plurality of heat absorption fire extinguishing units are placed on an inner side wall of the box body, and a first trigger unit is arranged between one of the heat absorption fire extinguishing units close to the first baffle and the inner side wall of the box body; the one of the heat absorption fire extinguishing units triggers the first baffle to move down through the first trigger unit, and a relatively closed space is formed in the box body; a plurality of gas generation fire extinguishing units are placed on the inner side wall of the box body, and a second trigger unit is arranged between one of the gas generation fire extinguishing units close to the second baffle and the inner side wall of the box body; the one of the gas generation fire extinguishing units triggers the second baffle to move down through the second trigger unit, and a relatively open space is formed in the box body; the second trigger unit comprises a timing part, and the one of the gas generation fire extinguishing units ensures a fire extinguishing state in the box body through the timing part;
the one of the heat absorption fire extinguishing units comprises a spherical container, one side of the spherical container is provided with a plurality of through holes, and the plurality of through holes are respectively sealed by aluminum foil; a lower part of an inner side of the spherical container is filled with a perfluorohexanone fire extinguishing agent, and a plurality of blocky fire extinguishing agents are placed on an upper part of the inner side of the spherical container;
the first trigger unit comprises a fixed ring fixedly connected to the inner side wall of the box body, and a threaded sleeve is sleeved on an inner thread of the fixed ring; an end cover is snap-fit with one end, away from the fixed ring, of the threaded sleeve, and a relatively closed space is formed in the threaded sleeve; and the spherical container is placed in the threaded sleeve; the plurality of through holes are correspondingly arranged on an inner side of the end cover, a first chute is formed on one of the side walls of the box body, and the first chute is correspondingly arranged with the first baffle; one side, close to the box body, of the first baffle is fixedly connected with a first connecting rod, and the first connecting rod is adapted to a top of an inner side of the first chute; and a metal ball is fixedly connected above one end, extending into the box body, of the first connecting rod, and a first limiting clamping part is arranged between an upper part of the metal ball and a bottom side of the end cover;
when a fire breaks out in the box body, a lot of heat is generated, a temperature in the box body rises rapidly, a large amount of fire extinguishing gas is generated in the spherical container, a pressure in the spherical container rises, and the end cover is immediately impacted after the aluminum foil is broken through; after the end cover is separated from the threaded sleeve, the first limiting clamping part is released, and the first baffle moves down, first air holes on the first baffle are no longer communicated with the ventilation holes on the box body, and the relatively closed space is formed in the box body;
the second trigger unit comprises a third connecting rod perpendicularly and fixedly connected to a side, close to the box body, of the second baffle; a second chute is formed on the side wall of the box body and correspondingly arranged with the second baffle; the third connecting rod is located at a top of an inner side of the second chute, and a second metal ball is fixedly connected above one end, extending into the box body, of the third connecting rod; a mesh bearing box is connected to the inner side wall of the box body, and fire extinguishing agents are placed in the mesh bearing box, and a second limiting clamping part is arranged between the mesh bearing box and the second metal ball;
when the fire breaks out in the box body, a lot of heat is generated, and the temperature in the box body rises rapidly, and the fire extinguishing agents begin to spontaneously ignite and release a large amount of fire extinguishing gas; as the fire extinguishing agents continue to burn, an overall weight of the mesh bearing box gradually decreases until the second limiting clamping part is triggered, and then a relatively open state is formed in the box body, facilitating a release of used fire extinguishing gas.