Air suction device for heating or air-conditioning plant for road vehicle

摘要

An outer housing (16) incorporating the fresh air inlet is fixed on the face wall (12) and in it is provided an inner housing (19) provided with an opening (20). The inner housing has a sealing flange (21) enclosing the opening and locates on the face wall in the area of the cut-out section (21). Wall areas of the outer and inner housings have a feed channel (26) issuing into a circulating air aperture (25) in the face wall for circulating air suckable from the vehicle interior (10) via the circulating air aperture. The feed channel has a circulating air flap (27) for closing or feeding the circulating air aperture.