Title:
TURBO COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2021/065363
Kind Code:
A1
Abstract:
In order to cool a coil of an electric motor (20) of a turbo compressor (10) using a simple configuration, in this turbo compressor, which is provided in a refrigerant circuit (70) that performs a refrigeration cycle, and which compresses a refrigerant: a refrigerant passage (56) through which the refrigerant flows, and a plurality of ejection openings (57) which eject the refrigerant from the refrigerant passage (56) toward coil ends (24, 25) of the electric motor (20) are formed in bearing holders (51, 52) which employ bearings (40) to support a drive shaft (26) linking an impeller (30) and the electric motor (20); and the ejection openings (57) are formed distributed around the bearing holders (51, 52) in the circumferential direction.
Inventors:
FUJIWARA HIDEKI (JP)
OKADA KUUMA (JP)
OKADA KUUMA (JP)
Application Number:
PCT/JP2020/033815
Publication Date:
April 08, 2021
Filing Date:
September 07, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F04D29/58; F04D17/10; F04D29/056; F04D29/058; H02K7/09; H02K9/19
Domestic Patent References:
| WO2017183644A1 | 2017-10-26 |
Foreign References:
| JP2005312272A | 2005-11-04 | |||
| JP4529129B2 | 2010-08-25 | |||
| JP2010051130A | 2010-03-04 |
Other References:
See also references of EP 4015838A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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