Patent ID: 6712889
Filing Date: 2004-03-30
Classification: B01D,F24F

Abstract:
An air filtration device for intake of atmospheric air, removal of contaminants from the atmospheric air, expulsion of filtered air, and configured for operational association with a generally vertically oriented surface, said air filtration device comprising:a housing defining an air flow path therethrough and having a front surface and a rear surface; at least one air inlet formed in said front surface; at least one air outlet formed in said housing intermediate said front surface and said rear surface for cooperation of said air outlet with a generally vertical surface to which said air filtration device is associated for enhanced dispersion of filtered air expelled through said air outlet; a filter supported in said air flow path; an impeller supported by said housing for moving air through said air flow path, said impeller including a central inside area; and a baffle plate supported by said housing for directing air flowing from said air inlet toward said central inside area, said baffle plate including a generally planar outer support surface located between a peripheral filter locating rib and a center point of the baffle plate, said outer support surface in facing engagement with a periphery of a rear surface of said filter in an operational position.