(19)
(11) EP 4 299 931 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
14.02.2024 Bulletin 2024/07

(43) Date of publication:
03.01.2024 Bulletin 2024/01

(21) Application number: 22775331.6

(22) Date of filing: 16.03.2022
(51) International Patent Classification (IPC): 
F16C 32/04(2006.01)
H02K 7/14(2006.01)
 H02K 7/09(2006.01)
F04D 29/058(2006.01)
(52) Cooperative Patent Classification (CPC):
F04D 29/058; F16C 32/04; H02K 7/14; H02K 7/09; H02K 2205/03; H02K 3/28
(86) International application number:
PCT/JP2022/011929
(87) International publication number:
WO 2022/202543 (29.09.2022 Gazette 2022/39)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 22.03.2021 JP 2021047476

(71) Applicant: Daikin Industries, Ltd.
Osaka-shi, Osaka 530-0001 (JP)

(72) Inventors:
  • IRINO, Yusuke
    Osaka-shi, Osaka 530-0001 (JP)
  • FU, Yuu
    Osaka-shi, Osaka 530-0001 (JP)
  • NAKAZAWA, Yuji
    Osaka-shi, Osaka 530-0001 (JP)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) ELECTRIC MOTOR SYSTEM, TURBO COMPRESSOR, AND REFRIGERATION DEVICE


(57) An electric motor system (101) includes a drive shaft (130) configured to rotationally drive a load (120); and a bearingless motor (170) and a radial magnetic bearing (180) arranged side by side in an axial direction of the drive shaft (130). A radial load on the drive shaft (130) is supported in a non-contact manner by the bearingless motor (170) and the radial magnetic bearing (180). A thrust magnetic bearing (150) is disposed between the bearingless motor (170) and the radial magnetic bearing (180).