METHOD OF FIRE EXTINGUISHING IN CLOSED SPACE AND DEVICE FOR ITS EMBODIMENT Russian patent published in 1999 - IPC

FIELD: fire-fighting equipment used in extinguishing of fire in rooms, holds, tanks, etc. SUBSTANCE: method includes supply to protected space of fire-extinguishing aerosol and gaseous fire-extinguishing substance (deterrent). Prior to supply of mixture, free hollows of generator of fire-extinguishing aerosol are blown with deterrent whose volume equal at least five volumes of generator of fire-extinguishing aerosol. Mixture is produced in the course of blowing at velocity of outflow higher than critical of gas phase of aerosol at temperature at outlet of mixing chamber of aerosol generator ejector determined by formula given in the invention description. Besides, mixture is supplied by circular motions beginning from ceiling with increase of angle of inclination of trajectory of mixture jet from horizontal to vertical. Method is realized with the help of device provided with gas perforated tube located on body bottom under aerosol-forming charge and cylinder with gas-deterrent, and connected with pipeline and hinge for attachment of generator. Outlet and ejecting nozzles may be made in the form of a few nozzles and ejectors with total area of minimal sections of ejecting nozzles determined by relation given in the invention description. Specified characteristics provide for concentration of explosive gas found in ejected air, mixed in outlet nozzle of generator with fire-extinguishing aerosol and gas-deterrent which is far below explosible one. EFFECT: higher efficiency. 4 cl, 6 dwg