rotor para um motor de rotor externo de fase única, motor de rotor externo de fase única, e, aparelho elétrico

摘要

a single-phase outer-rotor motor includes a stator and a rotor surrounding the stator. the stator includes a stator core and windings wound around the stator core. the stator core includes a yoke and a plurality of teeth. each of the teeth forms a tooth tip at a distal end thereof. a slot opening is formed between each two adjacent tooth tips. the rotor includes a housing and a permanent magnet affixed to an inside of the housing. the permanent magnet forms a closed ring in a circumferential direction. the permanent magnet forms a plurality of magnetic poles along the circumferential direction. an outer surface of the stator and an inner surface of the permanent magnet define there between a symmetrical uneven gap. a width of the slot opening in the circumferential direction is less than or equal to five times of a minimum width of the gap.