APPARATUS AND METHOD FOR THE FILTRATION OF AIR FOR VEHICLE CABINS

摘要

A filter assembly for providing filtered air to a vehicle cabin, the filter assembly being disposed in the flow of forced air exiting in the vehicle, the assembly comprising: a filtration media (55) for filtering airborne impurities from the air flow, with flow through the filtration media defining a first flow path; a diverting opening (60) disposed adjacent the filtration media, with flow through the diverting opening defining a second flow path; and a closure (70) for the diverting opening, the closure being movable between a closed position, wherein flow through the diverting opening is prevented, and an open position, wherein flow through the diverting opening is allowed in response to a predetermined decrease in the flow rate in the first flow path.