Rotary expansible chamber devices – With wear surface treatment or integrally plated wear layer
Patent
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.
Kitaichi Shoichiro
Sato Shinobu
Bertsch Richard A.
Freay Charles G.
Kabushiki Kaisha Toshiba
LandOfFree
Refrigerant compressor using refrigerant HFC134A or HFC152A does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Refrigerant compressor using refrigerant HFC134A or HFC152A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refrigerant compressor using refrigerant HFC134A or HFC152A will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1843744