Title:
ROTARY ELECTRIC MACHINE AND PUMP
Document Type and Number:
WIPO Patent Application WO/2017/141477
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a rotary electric machine that can be rotated at a high speed and has reduced size and cost while maintaining corrosion resistance; and a pump using the rotary electric machine. A rotary electric machine 11 according to the present invention is provided with: a rotor 211; and a stator 100 that generates a magnetic field for rotating the rotor 211. The rotor 211 has: a shaft 221; a rotor core 231 that is made of a nonmagnetic material and is fitted to the shaft 221; a permanent magnet 251 that is disposed on the outer periphery 231a of the rotor core 231; and a holding ring 261 that is arranged so as to cover at least a part of the outer periphery of the permanent magnet 251 and that integrally holds the permanent magnet 251 and the rotor core 231. A magnetic member 241 is buried in the rotor core 231, and this magnetic member 241 is not exposed to the outer periphery 231a of the rotor core 231.
Inventors:
ITO MAKOTO (JP)
SUGIMOTO SHINJI (JP)
KORI DAISUKE (JP)
SUGIMOTO SHINJI (JP)
KORI DAISUKE (JP)
Application Number:
PCT/JP2016/077498
Publication Date:
August 24, 2017
Filing Date:
September 16, 2016
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02K1/27; F04B39/00; H02K1/02; H02K1/22; H02K7/14; H02K21/16
Foreign References:
| JPH10248186A | 1998-09-14 |
Attorney, Agent or Firm:
WILLFORT INTERNATIONAL PATENT FIRM (JP)
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