Compressor exhibiting an iron sulfide wear surface

Details Compressor exhibiting an iron sulfide wear surface Compressor exhibiting an iron sulfide wear surface

1992-08-05

1993-12-28

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Intermixed incoming working and non-working fluids

418178, 418179, 92223, 417DIG1, F04C 2902, F04B 3902, F16J 101

Patent

active

052734102

ABSTRACT:
A refrigerant compressor for using HFC 134a as a refrigerant and a refrigerator oil such as polyether type oil, polyester type oil, or the like which is compatible thereto is disclosed. The refrigerant compressor has a iron type substrate with a compound layer mainly made of iron sulfide on sliding portions such as sliding parts and shaft in the compression mechanism. The sliding parts in the compression mechanism are a cylinder and a rotor and a piston which are moving parts. In a rotary type compressor, the sliding parts are a blade and so forth. The hardness of the compound layer mainly made of the aforementioned iron sulfide is large and thereby effectively preventing metals from being contacted and preventing adhesive abrasion which is the primary cause of the abrasion of the sliding portions. In addition, since the compound is stable in a moist situation, even if it is used along with polyether type oil, polyester type oil, or the like and HFC 134a, corrosion and abrasion due to dissolving of compound layer can be prevented.

REFERENCES:
patent: 3259307 (1966-07-01), Ayling
patent: 4074956 (1978-02-01), Maruyama et al.
patent: 4568252 (1986-02-01), Hattori et al.
patent: 4944663 (1990-07-01), Tizuka

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