Air ventilation and filtration apparatus

F - Mech Eng,Light,Heat,Weapons – 24 – H

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F24H 3/02 (2006.01) F24F 3/16 (2006.01) F24F 7/08 (2006.01) F24F 12/00 (2006.01)

Patent

CA 1248808

ABSTRACT OF THE DISCLOSURE Apparatus for exchanging air within an enclosure with outside air while subjecting air within the enclosure to gas filtration and/or electronic air cleaning. The apparatus includes a two-position valve to provide an intake cycle and an exhaust cycle; during both cycles the air treatment means is operative on air within the enclosure.

496062

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