F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
98/1, 98/34
F24F 9/00 (2006.01) F24F 13/06 (2006.01) F24F 13/068 (2006.01)
Patent
CA 1074612
APPARATUS FOR FORMING AND CONTROLLING CURRENTS OF AIR Abstract of Disclosure Apparatus for forming and controlling high-velocity air curtains in a room such as an auto-body painting booth, which room is also provided with ventilating air flowing inward- ly through perforations in a ceiling in response to pressure developed by a fan in a chamber above the ceiling. Rather than using a permanent custom-designed arrangement of nozzles ¦ separately supplied with pressurized air through special ducts to form the air curtains, the curtains are formed and controlled by air guiding means located on the room side of the ceiling and open to the ceiling perforations, so configured that the flow through the perforations is converted to one or more air curtains of desired velocity and direction. Quick-disconnect fastening means insertable into the perforations through a flange on the air guiding means enables installation, removal or shifting of the air guiding means, as desired for different purposes. The air guiding means may be a duct of generally rec- tangular cross section open on one side to the ceiling perfor- ations, with restricted openings on another side serving as nozzles, and adjustable plates may be provided in the duct to permit adjustment of air-current flow.
272610
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