Title:
A permanent magnet electric motor and a compressor
Document Type and Number:
Japanese Patent JP6133350
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for manufacturing a permanent magnet motor, using a neodymium magnet containing terbium, inexpensively while improving the efficiency.SOLUTION: A motor 100 is constituted of a stator 110 and a rotor 120. Permanent magnets 122 are inserted into the magnet insertion holes 121 formed in respective poles of the rotor 120. A neodymium magnet containing neodymium, iron and terbium is used as the permanent magnet 122. The content of terbium is in a range of 0.5-2 wt% when the number of main poles is 4, in a range of 0.4-2 wt% when the number of main poles is 6, in a range of 0.3-2 wt% when the number of main poles is 8, and in a range of 0.2-2 wt% when the number of main poles is 10.SELECTED DRAWING: Figure 1
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Inventors:
Mitsuhiko Sato
Application Number:
JP2015074141A
Publication Date:
May 24, 2017
Filing Date:
March 31, 2015
Export Citation:
Assignee:
Aichi Elec Co., Ltd.
International Classes:
H02K1/27; F04B39/00; H02K1/22
Domestic Patent References:
| JP2014147151A | ||||
| JP2015052324A | ||||
| JP2005210898A | ||||
| JP2005086955A | ||||
| JP2014146627A |
Foreign References:
| CN104052221A | ||||
| CN102761221A |
Attorney, Agent or Firm:
Toshiyuki Ikeda
Tetsuyuki Iwata
Tetsuyuki Iwata
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