AMMONIA REFRIGERATING UNIT, WORKING FLUID COMPOSITION TO BE USED IN SAID UNIT, AND LUBRICATION OF AMMONIA COMPRESSOR

Title:

AMMONIA REFRIGERATING UNIT, WORKING FLUID COMPOSITION TO BE USED IN SAID UNIT, AND LUBRICATION OF AMMONIA COMPRESSOR

Document Type and Number:

WIPO Patent Application WO/1994/012594

Kind Code:

A1

Abstract:

A refrigerator working fluid composition comprising an ammonia refrigerant and a lubricating oil which has a remarkably good compatibility therewith, and a method of lubricating a refrigerating unit suitable when the above composition is used. The composition comprises a mixture of ammonia with one or more polyether compounds represented by the general formula (I): R1-[-O-(PO)m-(EO)n-R2]x wherein R1 represents C1-C6 hydrocarbon group; R2 represents C1-C6 alkyl; PO represents oxypropylene; EO represents oxyethylene; x represents an integer of 1 to 40; m represents a positive integer; and n represents 0 or a positive integer. The refrigerating unit comprises circulating the above composition in a circulatory cycle and constituting a refrigeration or heat pump cycle. The method of lubricating an ammonia refrigerant compressor comprises the use of a lubricating oil comprising one or more ether compounds of general formula (I).

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Inventors:

KASAHARA KEISUKE (JP)
KAWAMURA KUNIAKI (JP)
KAIWAI TAKASHI (JP)
YANO HISASHI (JP)

Application Number:

PCT/JP1992/001551

Publication Date:

June 09, 1994

Filing Date:

November 27, 1992

Export Citation:

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Assignee:

KYOSEKI SEIHIN GIJUTSU KENK (JP)
MAEKAWA SEISAKUSHO KK (JP)
KASAHARA KEISUKE (JP)
KAWAMURA KUNIAKI (JP)
KAIWAI TAKASHI (JP)
YANO HISASHI (JP)

International Classes:

C10M107/34; C10M171/00; F25B31/00; F25B1/10; F25B9/00; F25B39/02; F25B40/00; (IPC1-7): C10M107/34

Foreign References:

JPS58106370A	1983-06-24
JPH03109492A	1991-05-09
JPH02276894A	1990-11-13
JPS60179498A	1985-09-13
JPH04369355A	1992-12-22

Other References:

HIDEO UCHIDA: "Refrigerator Engineering Handbook", 1st edit., January 30, 1965 (30. 01. 65), Asakura Shoten K.K. (Tokyo), p. 148-156, 215-220.
See also references of EP 0626443A4

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