Smoke control flap for clearing smoke in building in event of fire, has blade whose main surface is limited in blocked position of blade, and intumescent joint arranged at side surfaces of blade when joint is in blocked position of opening

摘要

The flap (110) has a blade (114) comprising a main surface (114p) rectangularly directed towards a frame (112) and rotatably mounted on the frame. A rotation axis of the blade is located at a side of the blade for selectively blocking an opening (113). The main surface of the blade is limited in a blocked position of the blade. An extension of a projection (112p) of the frame is provided perpendicular to a base plane (112b). An intumescent joint (116) is arranged at side surfaces (1141) of the blade when the joint is in the blocked position of the opening.