Title:
COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2018/142564
Kind Code:
A1
Abstract:
This compressor is provided with a sealed container, a compression mechanism which is housed in the sealed container and which compresses a refrigerant flowing into the sealed container. The compression mechanism comprises a rotation shaft, a main bearing and an auxiliary bearing. The coaxiality R [μm], which is the distance between the central axis E of the main bearing and the central axis F of the auxiliary bearing, satisfies expressions 2 and 6, on the basis of the clearance XA [μm] representing the difference between the inner diameter DA of the main bearing and the diameter dA of the main shaft part of the rotation shaft located in the main bearing, the clearance XB [μm] representing the difference between the inner diameter DB of the auxiliary bearing and the diameter dB of the auxiliary shaft part of the rotation shaft located in the auxiliary bearing, the shaft deflectionCA [μm] representing the shaft deflection of the main shaft part, the shaft deflection CB [μm] representing the shaft deflection of the auxiliary shaft part, and, when the distance between the lower end of the auxiliary bearing and the upper end of the main bearing is defined as 1 (reference), the ratio α of the distance between the lower end and the upper end of the main bearing and the ratio β of the distance between the lower end and the upper end of the auxiliary bearing.
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Inventors:
HAMADA RYO (JP)
SUGIURA KANICHIRO (JP)
KIMOTO TAKAYA (JP)
SUGIURA KANICHIRO (JP)
KIMOTO TAKAYA (JP)
Application Number:
PCT/JP2017/003915
Publication Date:
August 09, 2018
Filing Date:
February 03, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C18/356; F04C29/00
Domestic Patent References:
| WO2011102413A1 | 2011-08-25 |
Foreign References:
| JPH07217574A | 1995-08-15 | |||
| JPS62284983A | 1987-12-10 | |||
| JP2002235664A | 2002-08-23 | |||
| JP2016098256A | 2016-05-30 | |||
| JP2016114049A | 2016-06-23 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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