Air Port Closing Device for Cooking Fume Exhauster being Unitary with Range

摘要

A closing unit for air port of integrated machine of cooking fume exhauster and range includes a lifting ring (4) which can cover the suction ports (8) in the wall of a range hole cylinder (2). The lifting ring (4) is connected to a driving mechanism and slides on the outer surface of the wall of the range hole cylinder (2).