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Patent Searching and Data


Title:
PERMANENT MAGNET-EMBEDDED ELECTRICAL MOTOR, COMPRESSOR, AND REFRIGERATING AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/093598
Kind Code:
A1
Abstract:
 ThiS permanent magnet-embedded electrical motor (1) is provided with a stator (3), and a rotor (5) arranged rotatably facing the stator (3). The rotor (5) has a rotor core (11) in which are formed a plurality of magnet insertion holes (21) for insertion of respectively corresponding permanent magnets (19). The plurality of permanent magnets (19) and the plurality of magnet insertion holes (21) are formed to arcuate shape oriented so as to be convex towards the center of the rotor (5), and where the shortest distance between neighboring magnet insertion holes (21) is denoted as the shortest interpolar distance (L), the ratio of the shortest interpolar distance (L) with respect of the outside diameter (D) of the rotor (5) is 0.035 ≦ L/D ≦ 0.045.

Inventors:
ISHIKAWA ATSUSHI (JP)
BABA KAZUHIKO (JP)
NIGO MASAHIRO (JP)
TSUCHIDA KAZUCHIKA (JP)
Application Number:
PCT/JP2014/083720
Publication Date:
June 25, 2015
Filing Date:
December 19, 2014
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K1/22; H02K1/27
Foreign References:
JP2001218404A2001-08-10
JP2000333391A2000-11-30
JP2013212035A2013-10-10
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)
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