Permanent magnet embedded electric motor, compressor and refrigeration air conditioner |
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| 申请号 | US15511781 | 申请日 | 2014-10-07 | 公开(公告)号 | US10116176B2 | 公开(公告)日 | 2018-10-30 |
| 申请人 | Mitsubishi Electric Corporation; | 发明人 | Kazuhiko Baba; Masahiro Nigo; Atsushi Ishikawa; | ||||
| 摘要 | In a permanent magnet embedded electric motor, a rotor iron core of a rotor disposed on an inner diameter side of a stator includes: a plurality of first slits that are formed on a radial direction outer side of a magnet insertion hole, and communicate with the magnet insertion hole; a plurality of second slits formed at positions opposed to and spaced apart from the first slits; inter-slit iron core portions formed between the first slits and the second slits; outer side iron core portions formed between the second slits and an outer circumferential surface of the rotor iron core; space portions communicating with rotating direction end portions of the magnet insertion hole; and thin iron core portions that are formed between the space portions and the outer circumferential surface of the rotor iron core, and extend in a rotating direction. | ||||||
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| 说明书全文 | |||||||
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