GAS GENERATOR FOR POWDER-TYPE FIRE EXTINGUISHER Russian patent published in 1996 - IPC

FIELD: fire-fighting equipment. SUBSTANCE: gas generator for powder-type fire extinguisher has combustion chamber with holes for gas discharge and gas generating charge located inside the chamber in a spaced relation to walls. Gas- generating charge has digressive combustion surface and made of composition capable of gas generation at normal pressure, and total area of holes for gas discharge is equal to (-.0013-0.05) of the charge total area. Gas- generating charge may be made in form of a set of tablet having no channels, and holes for air discharge are closed with material decomposing under the effect of temperature of burning of gas-generating composition or at pressure which does not exceed the supercritical pressure differential for generated gas. EFFECT: higher efficiency. 2 cl, 1 dwg