Title:
COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2021/199464
Kind Code:
A1
Abstract:
This compressor (1) comprises a shaft (3) positioned along a rotation axis (31), a compression unit (5) that is driven in concert with the rotation of the shaft (3), a rotor core (611) that is fixed to the shaft (3), a plurality of permanent magnets (655) embedded in the interior of the rotor core (611), and a stator (62) that causes the rotor core (611) to rotate about the rotation axis (31). On the rotor core (611) are formed a plurality of eccentric holes (644) that adjust the balance when the shaft (3) rotates. The plurality of eccentric holes (644) are formed within a polygonal region (653) whose vertices are the centerpoints (649) of rotation-axis (31)-side edges (648) among the edges on which the side surfaces of the plurality of permanent magnets (655) are formed in a cross-section orthogonal to the rotation axis (31).
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Inventors:
TANAKA HIROAKI (JP)
Application Number:
PCT/JP2020/037227
Publication Date:
October 07, 2021
Filing Date:
September 30, 2020
Export Citation:
Assignee:
FUJITSU GENERAL LTD (JP)
International Classes:
H02K1/22; F04C29/00; H02K1/27; H02K7/14
Domestic Patent References:
| WO2015125254A1 | 2015-08-27 |
Foreign References:
| JP2015192592A | 2015-11-02 | |||
| JP2000197292A | 2000-07-14 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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