HERMETIC REFRIGERANT COMPRESSOR AND FREEZING/REFRIGERATING APPARATUS USING THE SAME - PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE

Title:

HERMETIC REFRIGERANT COMPRESSOR AND FREEZING/REFRIGERATING APPARATUS USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2020/004382

Kind Code:

A1

Abstract:

A hermetic refrigerant compressor (100) stores, in a hermetic container (101), a lubricating oil (103) that has a kinematic viscosity at 40°C of 1-9 mm2/S and includes sulfur or a sulfur-containing compound as a slidability modifier. A compression element (107) includes a crankshaft (108) as a shaft. Where the sliding surface of a main shaft (109) is a single surface and the axial length of the sliding surface is taken as a single sliding length L, or where the sliding surface is divided into a plurality of surfaces and the minimum axial length of the sliding surface is taken as the single sliding length L, the ratio L/D between the single sliding length L and the outer diameter D of the main shaft (109) is 0.51 or less. Furthermore, where the sum total of axial lengths of the plurality of sliding surfaces is taken as the total sliding length Lt, the ratio Lt/D between the total sliding length Lt and the outer diameter D may be 1.26 or less.

Inventors:

HAYASHI HIROTO
KAWABATA HIROTAKA
IDE TERUMASA
AKASHI HIRONARI
GONDO MASANOBU
YAGI AKIO

Application Number:

PCT/JP2019/025141

Publication Date:

January 02, 2020

Filing Date:

June 25, 2019

Export Citation:

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Assignee:

PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE (SG)
PANASONIC IP MAN CO LTD (JP)

International Classes:

F04B39/02; F04B39/00; F25B1/02

Domestic Patent References:

WO2018101246A1

2018-06-07

Foreign References:

JP2006509899A	2006-03-23
JP2006161712A	2006-06-22
JP2000129250A	2000-05-09
JP2008297447A	2008-12-11
JP2011021530A	2011-02-03
JP2006117720A	2006-05-11
JP5671695B2	2015-02-18

Other References: