Title:
DYNAMO-ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2016/002867
Kind Code:
A1
Abstract:
A dynamo-electric machine (1) is provided with a stator (31) and a rotor (40) having a rotor core disposed facing a stator core (32), the rotor (40) being supported so as to be capable of rotating relatively with respect to the stator (31). The rotor core has a permanent magnet (42) as well as a first cooling path (134), a second cooling path (135), and a third cooling path (136) that pass through in the axial direction of the rotor (40) and are arranged in a line, in the stated order, in the axial direction of the rotor (40). The cross sectional area Sb of the second cooling path (135) is smaller than the cross sectional area Sa of the first cooling path (134) and the cross sectional area Sc of the third cooling path (136). Sa and Sc are the same. The axial length Lb of the second cooling path (135) is 0.2-2 times the combined length of the axial length La of the first cooling path (134) and the axial length Lc of the third cooling path (136). Where κ = (Sa‒Sb)/(Sa), κ is such that 0.02 ≤ κ ≤ 0.09.
Inventors:
AZUMA MICHITOSHI (JP)
MORI TAKESHI (JP)
HAZEYAMA MORIYUKI (JP)
DAIKOKU AKIHIRO (JP)
TACHIBANA TOMOYA (JP)
ARITA HIDEAKI (JP)
MORI TAKESHI (JP)
HAZEYAMA MORIYUKI (JP)
DAIKOKU AKIHIRO (JP)
TACHIBANA TOMOYA (JP)
ARITA HIDEAKI (JP)
Application Number:
PCT/JP2015/069087
Publication Date:
January 07, 2016
Filing Date:
July 02, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K1/32; H02K1/22; H02K9/19
Foreign References:
| JP2010183800A | 2010-08-19 | |||
| JPS60114556U | 1985-08-02 | |||
| JP2012165600A | 2012-08-30 | |||
| JP2005184957A | 2005-07-07 | |||
| JPH0648355U | 1994-06-28 | |||
| JP2011254577A | 2011-12-15 | |||
| JP2013223291A | 2013-10-28 | |||
| US20110163640A1 | 2011-07-07 |
Attorney, Agent or Firm:
INABA, Tadahiko et al. (JP)
Tadahiko Inaba (JP)
Tadahiko Inaba (JP)
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