Patent ID: 8841812
Filing Date: 2014-09-23
Classification: H02K

Abstract:
1. A squirrel-cage induction motor comprising: a stator including laminated thin sheets, and including stator windings wound in a plurality of stator slots arranged at intervals in the vicinity of the inner periphery of a stator core; and a rotor including laminated thin sheets, and including rotor conductors embedded in a plurality of rotor slots arranged at intervals in the vicinity of the outer periphery of a rotor core and end rings are provided at both ends of the rotor core; wherein the quantity of laminated thin sheets in the stator core is equal to the quantity of laminated thin sheets in the rotor core; wherein an interval between laminated thin sheets in the rotor core is made larger than an interval between laminated thin sheets in the stator core; wherein a laminated thickness of the rotor core is larger than a laminated thickness of the stator core; wherein when viewed in a direction perpendicular to both a laminated thickness direction and a width of a short-circuit ring, a right end and a left end of the stator core are disposed within the width of the thickness of the rotor core as defined by the distance between the right end and the left end of the rotor core, and the distance in the shaft direction between the right end of the stator core and the right end of the rotor core differs from the distance in the shaft direction between the left end of the stator core and the left end of the rotor core.