GAS-GENERATING DEVICE Russian patent published in 2018 - IPC A62C13/12 

FIELD: fire safety.

SUBSTANCE: invention relates to gas-generating devices using channel porous gas-permeable gas-generating charges, namely, gas generators operating on these charges, providing ignition and combustion of low-calorie compositions that create, during combustion, the working pressure of low-temperature working gas for systems of displacing liquid and powder substances, and for products in which it is necessary to create a pressure of a certain level. The gas-generating device comprises an outer metal cylindrical body sealed by a rolling up with a lid, a solid chemical charge placed in the body made of bezazido gas generating composition with a central blind cylindrical channel formed from the side of the end facing the lid and an igniter. Between the lid and the end of the charge a flat elastic element is placed. According to the invention, the outer metal body is provided with an internal perforated body affixed to the lid by a rolling method and arranged such that an annular slit gas duct is formed between the outer body and the internal perforated body, the charge of the solid chemical agent of the bezazido gas generating composition with the central blind cylindrical channel is porous and gas permeable of substances and in the composition selected depending on the field of use, an igniter is placed in its channel, and it is made granular. The channel porous gas-permeable gas-generating charge is installed without a gap inside the perforated body with one end facing the lid with a flat elastic element and the other end in a hollow-bottomed tin of the internal perforated body, the outer metal casing is closed with a notched splitter damper, a tightly sealed docking device is placed outside on the lid.

EFFECT: gas generating device provides minimum operating time not more than 3 s, the pressure difference of the combustion arch does not exceed 1,5 MPa and the gas temperature is not higher than 373 K, meets the ecological requirements, is compact, economical and convenient to use.

6 cl, 3 dwg