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Title:
MOTOR, AND REFRIGERANT COMPRESSOR WITH THE SAME
Document Type and Number:
Japanese Patent JP2009136101
Kind Code:
A
Abstract:

To provide a motor that prevents deterioration in motor efficiency due to iron loss in a core by specifying the shape of a divided core to eliminate the stress concentrated at the bottom of slots to prevent the imbalance of the stress, in a concentrated winding stator core constituted of a plurality of divided cores connected annularly, and to provide a refrigerant compressor with the motor.

The concentrated winding stator core 21 is constituted of a plurality of divided cores 22 connected annularly, wherein teeth parts 24 are formed on the inner circumferential part of the divided cores 22 and the stress concentrated parts 37 for concentrating the stress applied to the divided cores 22 are formed on the outer circumferential part of the divided cores. The length (L1) of the connecting part 23 of adjacent divided cores 22 is made shorter than the length (L2) from the corner part 26 formed of the radial direction side surface of the teeth parts 24 and the inner circumferential surface 25 of a core back 30 in the divided cores 22 having the teeth parts 24 to the stress concentrated part 37.


Inventors:
KANZAKI JUNYA
ISHIGAKI TAKASHI
MASUMOTO KOJI
Application Number:
JP2007310012A
Publication Date:
June 18, 2009
Filing Date:
November 30, 2007
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02K1/18; F04C29/00; H02K1/12; H02K1/14; H02K1/20
Domestic Patent References:
JP2005051941A2005-02-24
JPH09275669A1997-10-21
JP2000350390A2000-12-15
JP2005110464A2005-04-21
JP2002136013A2002-05-10
JP2001238376A2001-08-31
JP2005143269A2005-06-02
JP2004364444A2004-12-24
Attorney, Agent or Firm:
小林 久夫
安島 清
佐々木 宗治
大村 昇
高梨 範夫