DC BRUSHLESS MOTOR, COMPRESSOR, REFRIGERATION CYCLE DEVICE, AND BUILT-IN MAGNETIZING METHOD FOR DC BRUSHLESS MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a DC brushless motor capable of built-in magnetization where built-in magnetization is possible with a low magnetization current and productivity is high, and to provide a built-in magnetization method for the DC brushless motor.;SOLUTION: In this DC brushless motor has a rotor, where a permanent magnet is arranged on the peripheral side of the rotor core and a stator which is counterposed to this rotor via an air gap, the end of a permanent magnet embedding hole where the permanent magnet is inserted, or the end of a flux barrier is arranged across a thin wall from the periphery of the rotor; and when the center in circumferential direction of the permanent magnet is positioned in the vicinity of the center of the teeth which form the border of the magnetic flux made by the stator, the center between adjacent permanent magnets which form different magnetic poles is positioned in the slot opening of the stator.;COPYRIGHT: (C)2004,JPO