Patent ID: 7347005
Filing Date: 2008-03-25
Classification: A47L,F03G

Abstract:
1. A ventilation system for household appliances comprising a device having an impeller with an axis of rotation, a housing chamber for said impeller, a suction duct, through which a first gaseous fluid is sucked into said chamber by means of said impeller, an ejection duct, through which the first fluid sucked into said chamber is expelled by means of said impeller, first movable shutter means, and actuating means, for producing the motion of said first shutter means, wherein said first shutter means has an axis coaxial with said axis of rotation of said impeller, one of said ducts has an axis coaxial with said axis of said first shutter means, said first shutter means is disposed between said impeller and said one of said ducts, and said first shutter means is reciprocally translatable between said impeller and said one of said ducts along said axes of rotation of said impeller and of said one of said ducts for opening and closing said one of said ducts.