Claims
- 1. A hermetic compressor comprising a hermetic case in which a motor and a compression machine are accommodated, and hydrocarbon refrigerant being used as refrigerant to be compressed by said compression machine, wherein freezer oil for lubricating sliding portions of said hermetic compressor is mineral oil or synthetic oil, and said sliding portions of said hermetic compressor comprise a sliding portion made of aluminum material and a sliding portion made of iron material.
- 2. A hermetic compressor according to claim 1, wherein said sliding portion made of aluminum material has a sliding surface which is subjected to phosphoric acid manganese treatment or molybdenum disulfide treatment, or which is subjected to phosphoric acid manganese treatment and then formed with surface treatment layer of molybdenum disulfide.
- 3. A hermetic compressor according to claim 1, wherein said sliding portion made of iron material is subjected nitriding or sulfurizing nitriding, and a white layer and nitrogen-dispersed hardened layer are formed on a sliding surface of said sliding portion.
- 4. A hermetic compressor according to claim 1, wherein said sliding portion made of iron material has a sliding surface on which a hardening treatment layer is formed.
- 5. A hermetic compressor according to any one of claims 1 to 4, wherein said hermetic compressor is a reciprocating compressor, a connecting rod belongs to said sliding portion made of aluminum material, a crankshaft belongs to said sliding portion made of iron material.
- 6. A hermetic compressor according to any one of claims 1 to 4, wherein said hermetic compressor is a scroll compressor, a movable lap belongs to said sliding portion made of aluminum material, a crankshaft, an Oldham ring or a stationary lap belongs to said sliding portion made of iron material.
- 7. A hermetic compressor according to claim 1, wherein the hydrocarbon refrigerant is selected from the group consisting of methane, ethane, propane, butane and isobutane.
- 8. An open compressor comprising a case in which a compression machine is accommodated, and hydrocarbon refrigerant being used as refrigerant to be compressed by said compression machine, wherein mineral oil or synthetic oil being used as refrigerant for lubricating sliding portions of said open compressor, and said sliding portions of said hermetic compressor comprise a sliding portion made of aluminum material and a sliding portion made of iron material.
- 9. An open compressor according to claim 8, wherein said sliding portion made of aluminum material has a sliding surface which is subjected to phosphoric acid manganese treatment or molybdenum disulfide treatment, or which is subjected to phosphoric acid manganese treatment and then formed with surface treatment layer of molybdenum disulfide.
- 10. An open compressor according to claim 8, wherein said sliding portion made of iron material is subjected nitriding or sulfurizing nitriding, and a white layer and nitrogen-dispersed hardened layer are formed on a sliding surface of said sliding portion.
- 11. A hermetic compressor according to claim 8, wherein said sliding portion made of iron material has a sliding surface on which a hardening treatment layer is formed.
- 12. An open compressor according to any one of claims 8 to 11, wherein said open compressor is a scroll compressor, a movable lap belongs to said sliding portion made of aluminum material, a crankshaft or an Oldham ring belongs to said sliding portion made of iron material.
- 13. An open compressor according to any one of claims 8 to 11, wherein said open compressor is a scroll compressor, a vane belongs to said sliding portion made of aluminum material, a rotor or a cylinder belongs to said sliding portion made of iron material.
- 14. A hermetic compressor according to claim 8, wherein the hydrocarbon refrigerant is selected from the group consisting of methane, ethane, propane, butane and isobutane.
Priority Claims (1)
Number |
Date |
Country |
Kind |
10-299150 |
Oct 1998 |
JP |
|
Parent Case Info
This application is a division of prior application Ser. No. 09/941,644, filed Aug. 30, 2001, which is a division of prior application Ser. No. 09/411,646, filed Oct. 4, 1999 now U.S. Pat. No 6,302,665.
US Referenced Citations (12)
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