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1. (WO2018142444) ELECTRIC MOTOR, COMPRESSOR, FAN, AND AIR CONDITIONER

Pub. No.:    WO/2018/142444    International Application No.:    PCT/JP2017/003303
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Wed Feb 01 00:59:59 CET 2017
IPC: H02K 1/27
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: YABE Koji
矢部 浩二
FUJISUE Yoshikazu
藤末 義和
KUMAGAI Kazuya
熊谷 一弥
TSUTSUMI Takahiro
堤 貴弘
Title: ELECTRIC MOTOR, COMPRESSOR, FAN, AND AIR CONDITIONER
Abstract:
An electric motor (1) has: a stator (3); and a rotor (2) having a permanent magnet (220) and an electromagnetic steel sheet (210). The electromagnetic steel sheet (210) has: a magnet insertion hole (211); a first outer circumference surface (210a) including an interpolar part of the rotor (2); a second outer circumference surface (210b) including a magnetic pole center part of the rotor (2); a first slit (212) that is long in the circumference direction of the rotor (2); and a first portion (215) formed between the first slit (212) and the magnet insertion hole (211). A distance (L1) from the first outer circumference surface (210a) to the stator (3) is greater than a distance (L2) from the second outer circumference surface (210b) to the stator (3). When the first angle formed by a first straight line (La) and a second straight line (Lc) is θa, and a second angle formed by a third straight line (Lb) and the second straight line (Lc) is θb, the electric motor (1) satisfies θa < θb.