F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
98/1
F24F 9/00 (2006.01)
Patent
CA 1054427
DEVICE FOR PREVENTING THE FLOW OF AIR THROUGH AN OPENING BETWEEN TWO ROOMS OR SPACES Abstract of the Disclosure A device for preventing flow of air through an opening between two spaces or rooms or between a room and the outdoor environment. Members are provided to generate by air exhaust at least two air curtains in each space or room, which curtains originate from the whole length of two opposite boundary edges of the opening or from the vicinity of said edges, and are directed obliquely towards each other to form a plough-shaped air curtain arrangement directed into each of the spaces or rooms, said arrangement defining a closed air volume, which fills the whole opening and extends therethrough a certain length into each of the spaces or rooms, said members for generating the air curtains in one of the spaces or rooms being adapted to take in air for exhaust from the same space for direct exhaust therein, whereas the members for generating the air curtains in the other space or room are arranged to take in air from said other space or room for direct exhaust therein, and in that sensing members are provided in or adjacent the opening for sensing the air flow therethrough and the direction of the flow and in response to said sensing, individually in each space or room, regulate the strength of the air exhaust and/or the direction of the air curtains so that the air flow is stopped.
264954
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