公开(公告)号：EP4107402A1

公开(公告)日：2022-12-28

申请号：EP20919773.0

申请日：2020-02-20

Applicant: Danfoss A/S

Inventor： GONZALEZ, Delvis Anibal ,  SUN, Lin Xiang

IPC: F16C32/04 ,  B23P15/00 ,  F01D3/00 ,  F25B31/00 ,  F25B31/02

公开(公告)号：WO2021183170A1

公开(公告)日：2021-09-16

申请号：PCT/US2020/040225

申请日：2020-06-30

Applicant: DANFOSS A/S

Inventor： LI, Tianlei ,  GONZALEZ, Delvis Anibal

IPC: H02K1/27

Abstract: An electric machine according to an exemplary aspect of the present disclosure includes, among other things, an electric machine including a rotor having a sleeve radially outside a permanent magnet. Further, the sleeve includes at least one magnetic arc segment and at least one non-magnetic arc segment.

公开(公告)号：WO2021167613A1

公开(公告)日：2021-08-26

申请号：PCT/US2020/019043

申请日：2020-02-20

Applicant: DANFOSS A/S

Inventor： GONZALEZ, Delvis Anibal ,  SUN, Lin Xiang

IPC: F16C32/04 ,  B23P15/00 ,  F01D3/00 ,  F25B31/00 ,  F25B31/02

Abstract: This disclosure relates to an axial magnetic bearing for a centrifugal refrigerant compressor, and a corresponding system and method. A centrifugal refrigerant compressor system according to an exemplary aspect of the present disclosure includes, among other things, an impeller connected to a shaft, and a magnetic bearing system supporting the shaft. The magnetic bearing system includes an axial magnetic bearing, which itself includes a first permanent magnet configured to generate a first bias flux, a second permanent magnet axially spaced-apart from the first permanent magnet and configured to generate a second bias flux, and an electromagnet. The electromagnet includes a coil arranged radially outward of the first and second permanent magnets, and the electromagnet is configured to selectively generate either a first control flux or a second control flux to apply a force to the shaft in a first axial direction or second axial direction opposite the first axial direction, respectively.