ELECTRIC FAN AND ELECTRIC VACUUM CLEANER

摘要

Provided is an electric fan, comprising a stator provided with a stator core and a field winding and a rotor disposed on the inner side of the stator, wherein: the stator core is divided into two C-shaped sections (9A, 9B) at two core division positions (25a, 25b) offset from a magnetic pole axis in the reverse of the direction of rotation; the C-shaped sections (9A, 9B) are shaped so that a core portion in a position in a direction perpendicular to the magnetic pole axis (35) is shaped so as to bulge outward in a straight U shape at three straight sections; a region for winding the field winding is created using spaces formed between the outwardly bulging U shape and the outer periphery of the rotor, and spaces formed in positions that are symmetrical to the former spaces and sandwich arm sections (9Ac, 9Bc) of the straight sections in the center; and the radial widths of the portions that face the rotor become smaller as they draw closer to the core division positions (25a, 25b).