Title:
ELECTRIC COMPRESSOR, AND REFRIGERATION AND AIR CONDITIONING DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/050020
Kind Code:
A1
Abstract:
The purpose of the present invention is to suppress the corrosion or electrolytic corrosion of bearings for an electric compressor when using trifluoroiodomethane (CF3I) as a refrigerant. This electric compressor 3 is provided with: a compression mechanism part 33 for compressing a refrigerant; an electric motor 24 that drives the compression mechanism part 33 via a crankshaft 23; and a main bearing 31 and a sub-bearing 32 that pivotally support the crankshaft 23. Trifluoroiodomethane (CF3I) by itself, or a refrigerant mixture of trifluoroiodomethane (CF3I) and another refrigerant is used as the refrigerant. The main bearing 31 and the sub-bearing 32 are respectively provided with: outer rings 41, 61 constituting an outer peripheral part; inner rings 42, 62 constituting an inner peripheral part; a plurality of rolling bodies 43, 63 disposed between the outer rings 41, 61 and the inner rings 42, 62; and retainers 44, 64 that maintain the mutually adjacent rolling bodies 43, 63 at a constant interval, wherein at least a portion or the entirety of the components are formed of non-metallic materials.
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Inventors:
UEDA HIDEYUKI (JP)
JUSAKON TAKANORI (JP)
UEDA TOMOYA (JP)
JUSAKON TAKANORI (JP)
UEDA TOMOYA (JP)
Application Number:
PCT/JP2019/032566
Publication Date:
March 12, 2020
Filing Date:
August 21, 2019
Export Citation:
Assignee:
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)
International Classes:
F04B39/00; F04C29/00; F16C33/44; F16C33/56
Domestic Patent References:
| WO2017082205A1 | 2017-05-18 |
Foreign References:
| JP2009235111A | 2009-10-15 | |||
| JP2018071512A | 2018-05-10 | |||
| JP2013092245A | 2013-05-16 | |||
| JP2004239443A | 2004-08-26 | |||
| JP2017150593A | 2017-08-31 | |||
| US20150147012A1 | 2015-05-28 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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