Patent ID: 7416384
Filing Date: 2008-08-26
Classification: A47L,F04D,F05D

Abstract:
1. An electric blower comprising: an electric motor including a stator and a rotor; an impeller being rotated by the electric motor; an air guide having a plurality of guide blades around the impeller; and a casing enclosing the impeller and the air guide, wherein the casing is provided with a number of exhaust openings through which a part of an air stream suctioned by the impeller is discharged, and a circumferential length of each of the exhaust openings is substantially identical to a circumferential distance between outer peripheral ends of adjacent guide blades, and wherein bottom surfaces of outer peripheral end portions of volute chambers are located between lower edges and upper edges of the exhaust openings, each of the volute chambers being an air passageway formed by two neighboring guide blades, and the air stream released from the impeller passes through the volute chambers to be exhausted from an outer periphery of the air guide.