Air filtration device

Details Air filtration device Air filtration device

B - Operations, Transporting

01

D

B01D 46/00 (2006.01) B01D 46/42 (2006.01)

Patent

CA 2720226

Air filtering devices are disclosed that contain a first filter cartridge having a cartridge inlet and a cartridge outlet and a curved filter bed having a concave surface disposed such that air to be filtered passes through the inlet, the curved filter bed, and the outlet. The air filtering devices also contain a blower assembly having a blower inlet in fluid communication with the car-tridge outlet and a blower outlet, the blower assembly includes a motor proximate to the concave surface of the curved filter bed. The motor has a rotational axis such that the rotational axis is adjacent to the center of curvature of the curved filter bed. The air filtering device may be used in powered air purifying respirators.

L'invention concerne des dispositifs de filtration dair contenant une première cartouche filtrante dotée dune entrée de cartouche, dune sortie de cartouche et dun lit filtrant incurvé présentant une surface concave disposée de telle sorte que lair à filtrer traverse lentrée, le lit filtrant incurvé et la sortie. Les dispositifs de filtration dair contiennent également un ensemble soufflante doté dune entrée de soufflante en communication fluidique avec la sortie de cartouche et dune sortie de soufflante, lensemble soufflante comprenant un moteur situé à proximité de la surface concave du lit filtrant incurvé. Laxe de rotation du moteur est adjacent au centre de courbure du lit filtrant incurvé. Les dispositifs de filtration dair peuvent être utilisés dans les respirateurs assistés à purification dair.

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