Refrigerant compressor and cooling apparatus comprising the same

Details Refrigerant compressor and cooling apparatus comprising the same Refrigerant compressor and cooling apparatus comprising the same

1997-09-29

1999-09-28

Bennett, Henry

Refrigeration

Processes

Employing diverse materials or particular material in...

F25B 4100

Patent

active

059569590

ABSTRACT:
A refrigerant compressor is configured such that a compressor unit is installed in a hermetically sealed container, an HFC type refrigerant or a mixture thereof and a refrigerator oil having compatibility with the refrigerant are charged into the hermetically sealed container, and the refrigerator oil essentially comprises a polyvinyl ether type compound having structural units represented by the following general formula (1): ##STR1## wherein n is an integral number in the range of 1 or more, R1 to R3 are each a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms and may be the same or different, R4 is an alkyl group having 1 to 4 carbon atoms, and units in which R4 is an alkyl group having 1 to 2 carbon atoms are 40 to 100% and units in which R4 is an alkyl group having 3 to 4 carbon atoms are 0 to 60%. As a result, the generation of a carboxylic acid caused by thermal cracking or hydrolysis due to frictional heat generated by sliding members is prevented and the generation of sludge is thereby suppressed.

REFERENCES:
patent: 5454963 (1995-10-01), Kaneko
Database WPI, Section Ch, Week 9431, Derwent Publications Ltd., London, GB; Class A97, An 94-253117 XP002055222 & JP 06 184 575 A (Tonen Corp), Jul. 5, 1994.

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