TRUNK FOR SMOKE REMOVAL FROM BUILDING Russian patent published in 1995 - IPC

FIELD: fire-prevention technology. SUBSTANCE: wind unblowing in trunk for smoke removing, mounted on building cover 1 is made as skeleton and fixed on it roof 3, butt walls 4, wind-proof side panels 5 with rounded upper part 6, longitudinal walls 7, that limit trunk 8. Longitudinal walls have openings 9, that are closed by shutters 10 with turning on shaft 12 openers 11. Lower part of wind-proof panel 5 forms slot 13 with building cover 1. Shutters 10 have opening system 14 with easy melted fuse. Operation of similar trunk is as following: in case of fire temperature in smoke removing trunk increases, easy melted fuse 15 operates and shutter 10 under action of openers 11 weight is turning on shaft 12, making opening 9 opened, through which smoke is removed in atmosphere. Wind-prof panels 5 protect opening 9 from been wind blown in. Atmospheric precipitation, that gets in smoke removal trunk, is drown away through slot 13. After ventilation shutters 10, using manual drive 15 or electric drive, are taking initial position. EFFECT: wind-proof operation, self-opening, protection against moisture keeping and shutters icing-over. 2 dwg