Gas separation: processes – Deflecting – Centrifugal force
Patent
1998-07-30
2000-08-15
Simmons, David A.
Gas separation: processes
Deflecting
Centrifugal force
95277, 95285, 55400, 55467, 55471, 55473, 55498, 55486, 55524, 55DIG39, B01D 3300, B01D 4514
Patent
active
061029882
ABSTRACT:
There is provided an air delivery device and method of moving and filtering air. The air delivery device comprises a housing having an air inlet and an air outlet. Between the air inlet and the air outlet is located an air delivery fan having at least two rotating air moving elements, the rotating air moving elements intersects the flow of air between the air inlet and the air outlet and establishes a higher pressure zone at the air outlet relative to the air inlet. The air delivery fan further comprises at lest one filter element, having at least one upstream filter face and at least one downstream filter face, defining at least one primary flow channel, and rotating along the same axis of rotation as the air moving elements and preferably forming the air moving elements at least in part. The upstream filter face moves into a portion of the airflow through the air delivery fan such that the upstream filter face impacts a portion of the moving airflow in a flow channel, permitting the air to flow through the filter element into the airflow of an further flow channel. The filter elements further define air flow passages or inlets allowing substantially unimpeded airflow to the primary flow channels and out to the air outlet. The air filter elements comprise an electret charged filter media.
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American National Standard Method for Measuring Performance of Portable Household Electric Cord-Connected Room Air Cleaners, ANSI/AHAM AC-1-1988, Association of Home Appliance Manufacturers, 24 pages.
Harms Michael
Lira Ricardo
Tang Yuan-Ming
3M Innovative Properties Company
Bond William J.
Griswold Gary L.
Hopkins Robert A.
Simmons David A.
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