FORCED VENTILATION FACILITY Russian patent published in 2002 - IPC

FIELD: ventilation of residential and public buildings. SUBSTANCE: forced ventilation facility includes heat insulated body, adjustable ventilation register, protective front screen, porous warmth-keeping jacket, thrust strips, wind-break valve in the form of plate hinged in upper part of body or equal-flange elbows hinged to side walls of body for displacement relative to attachment axis or nonequal-flange elbows hinged to side walls of body for displacement relative to attachment axis. EFFECT: increased functional reliability, provision for uniform flow of air. 3 cl, 3 dwg