Title:
EMBEDDED PERMANENT MAGNET-TYPE ELECTRIC MOTOR, COMPRESSOR, AND REFRIGERATION/AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/162713
Kind Code:
A1
Abstract:
This embedded permanent magnet-type electric motor (1) is provided with: a rotor (5) provided with a plurality of permanent magnets (19); and a stator (3). The rotor is provided with a rotor iron core (11). The rotor iron core is provided with: a plurality of magnet insertion holes (21); and a plurality of slits (31a). The plurality of slits are disposed in sections of the rotor iron core which are located outside each of the magnet insertion holes in the radial direction. Each of the magnet insertion holes is curved in an arc shape. The protrusion side of the arc shape of each of the magnet insertion holes is disposed at the side of the centre of the rotor. The hole outer line (55) of each of the magnet insertion holes includes: an arc surface; and a pair of recesses (61) which are positioned at both sides of the arc surface.
Inventors:
NIGO MASAHIRO (JP)
BABA KAZUHIKO (JP)
TSUCHIDA KAZUCHIKA (JP)
BABA KAZUHIKO (JP)
TSUCHIDA KAZUCHIKA (JP)
Application Number:
PCT/JP2014/061370
Publication Date:
October 29, 2015
Filing Date:
April 23, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K21/14
Foreign References:
| JP2001037186A | 2001-02-09 | |||
| JP2013126291A | 2013-06-24 | |||
| JP2013118788A | 2013-06-13 | |||
| JP2010068605A | 2010-03-25 | |||
| JPH1198721A | 1999-04-09 |
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)
Michiharu Soga (JP)
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