Refrigerant compressor using refrigerant HFC134A or HFC152A

Details Refrigerant compressor using refrigerant HFC134A or HFC152A Refrigerant compressor using refrigerant HFC134A or HFC152A

1992-06-05

1993-11-23

Bertsch, Richard A.

Rotary expansible chamber devices

With wear surface treatment or integrally plated wear layer

418179, 418 97, F01C 2100, F03C 200

Patent

active

052638340

ABSTRACT:
A hermetic type refrigerant compressor operates using a refrigerant and a refrigerator oil in which the refrigerant is soluble. The refrigerant compressor includes slidable members adapted to slidably move and a compressing mechanism for compressing the refrigerant with the aid of the slidable members in a hermetic casing. The refrigerant, the refrigerator oil and the slidable members are selected and constructed in the following manner. The refrigerant is a 1,1,1,2-tetrafluoroethane or a 1,1-difluoroethane, the refrigerator oil is at least one kind of refrigerator oil selected from a polyalkylene glycol based oil and a polyester based oil, and at least one of the slidable members has a slidable surface which is prepared such that a surface hardened layer having a Vickers hardness of 400 or more and a thickness of 2 microns or more is formed on a substrate of ferrous metallic material, and subsequently, an iron oxide layer composed of Fe.sub.3 O.sub.4 as a main component and having a thickness of 0.01 micron or more is formed on the surface hardened layer. Each slidable member has surfaces each of which exhibits especially improved abrasion resistance.

REFERENCES:
patent: 3239135 (1966-03-01), Fritz
patent: 4944663 (1990-07-01), Iizuka et al.
patent: 5090882 (1992-02-01), Serizawa et al.
S. C. Kang and K. C. Ludema; The Breaking-In of Lubricated Surfaces, Wear, 108 (1986) pp. 375-384.

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