EMBEDDED PERMANENT MAGNET-TYPE ELECTRIC MOTOR, COMPRESSOR, AND REFRIGERATION/AIR-CONDITIONING DEVICE

Title:

EMBEDDED PERMANENT MAGNET-TYPE ELECTRIC MOTOR, COMPRESSOR, AND REFRIGERATION/AIR-CONDITIONING DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/162690

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). A plurality of slits (31) are provided in sections of the rotor iron core which are located outside the magnet insertion holes in the radial direction. At least two of the slits are provided such that an iron-core section sandwiched between the two slits has a section which broadens as said section extends radially outwards.

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Inventors:

NIGO MASAHIRO (JP)
TSUCHIDA KAZUCHIKA (JP)

Application Number:

PCT/JP2014/061286

Publication Date:

October 29, 2015

Filing Date:

April 22, 2014

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02K21/16

Domestic Patent References:

WO2012026032A1

2012-03-01

Foreign References:

EP2602912A2	2013-06-12
JP2001037186A	2001-02-09
JP2013126291A	2013-06-24

Other References: