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Title:
HERMETIC REFRIGERANT COMPRESSOR AND FREEZING/REFRIGERATING APPARATUS IN WHICH SAME IS USED
Document Type and Number:
WIPO Patent Application WO/2021/106903
Kind Code:
A1
Abstract:
According to the present invention, a lubricating oil has a kinematic viscosity at 40°C ranging from 1 mm2/S to 7 mm2/S and an average mass molecular weight ranging from 150 to 400, the lubricating oil containing 0.5 mass% or more of a high-molecular-weight component, and the high-molecular-weight component having a mass molecular weight of 500 or more. In a crankshaft, which is a shaft part of a compression element, the ratio L/D of a single sliding length L and the outside diameter D of a main shaft is 2.0 or less, where the single sliding length L is the axial length of a sliding surface of the main shaft when the sliding surface is a single surface, or the single sliding length L is the axial length of the sliding surface having the shortest axial length when the sliding surface is divided into a plurality of surfaces.

Inventors:
KAWABATA HIROTAKA
HAYASHI HIROTO
GONDO MASANOBU
Application Number:
PCT/JP2020/043743
Publication Date:
June 03, 2021
Filing Date:
November 25, 2020
Export Citation:
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Assignee:
PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE (SG)
PANASONIC IP MAN CO LTD (JP)
International Classes:
F04B39/00; C10M101/02; C10M105/06; C10M105/32; C10M129/68; C10M137/00; C10M171/02; C10M171/04; F16C3/08; C10N20/02; C10N30/00; C10N30/02; C10N40/02; C10N40/30
Domestic Patent References:
WO2018101246A12018-06-07
Foreign References:
JP2018083920A2018-05-31
JP2000129250A2000-05-09
JP2006161712A2006-06-22
JP2018048649A2018-03-29
JP2009264134A2009-11-12
JP2012111956A2012-06-14
JP2008297447A2008-12-11
JP2017508020A2017-03-23
JPH11293273A1999-10-26
JP2009121316A2009-06-04
JP5222244B22013-06-26
JP2017014992A2017-01-19
JP2006097096A2006-04-13
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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