Patent ID: 7281908
Filing Date: 2007-10-16
Classification: A47L,F04D,H02K

Abstract:
1. An electrically powered blower, comprising: a stator and a rotor which can rotate relative to the stator, each being provided inside a motor casing, a fan mounted on one end of an output shaft rotatably supporting the rotor and extending outward of the motor casing, a fan case fixed to an outer periphery of the motor casing so as to cover the fan, the fan case including an opening corresponding to a suction port of the fan, an air passage which discharges air through a discharge port of the fan through an inner side of the motor casing, power elements of a drive circuit which control electric supply to the motor section comprising the stator and the rotor, the power elements being mounted on an outer peripheral surface of the motor casing and thermally connected, the motor casing having an air opening which directs a portion of air flow to come into contact with the power elements, and a wind direction guide formed in the motor casing, the guide extending from the air opening toward the power elements.