Compressor with steel and cast iron sliding materials
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMasao Nakano, Noboru Iida, Tsuyoshi Karino
Life of this patent
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Abstract
A compressor, characterized in that a steel is used as the base material for the other sliding material vane 10 and nitrided, a CrN or DLC film is formed on the surface by PVD treatment, and a Ni—Cr—Mo cast iron is used for the other corresponding sliding material piston 9. It is possible in such a configuration to suppress the temperature rise by sliding friction of the sliding materials, such as the vane tip region 10a and the peripheral region of piston 9 that are vigorously slid, relax decomposition of the refrigerant, and suppress corrosion by hydrogen fluoride generated in reaction with water and oxygen, and thus to provide a compressor higher in reliability.
Claims14
A compressor, comprising:
- a compressing mechanism unit including:
- first and second sliding materials in sliding contact,
- the first sliding material including a nitrided steel as a base material;
- and a CrN or DLC film formed on a surface of the base material by PVD treatment;
- and
- the second sliding material including a Ni—Cr—Mo cast iron;
- wherein the compressor uses a refrigerant containing a hydrofluoroolefin having a carbon-carbon double bond as a base component as its operating refrigerant, and a refrigeration oil miscible with the refrigerant.
A compressor, comprising:
- a compressing mechanism unit comprising:
- a piston and a vane in a cylinder,
- the vane including a nitrided steel as a base material;
- and
- a CrN or DLC film formed on a surface of the base material by PVD treatment;
- and
- the piston material including a Ni—Cr—Mo cast iron;
- wherein the compressor uses a refrigerant containing a hydrofluoroolefin having a carbon-carbon double bond as a base component as its operating refrigerant, and a refrigeration oil miscible with the refrigerant.
A compressor, comprising:
- a compressing mechanism unit having a motor in a tightly sealed container and a shaft driven by the motor installed therein;
- the compressing mechanism unit having bearings at both terminal faces of a cylinder, a piston eccentrically rotated by the shaft in the cylinder, and
- a vane dividing the cylinder to suction and compression chambers, a tip region of which is in contact with a peripheral surface of the piston under pressure, the vane including a nitrided steel as a base material and a CrN or DLC film formed on a surface of the base material by PVD treatment, and
- the piston material including a Ni—Cr—Mo cast iron;
- wherein the compressor uses a refrigerant containing a hydrofluoroolefin having a carbon-carbon double bond as a base component as its operating refrigerant, and a refrigeration oil miscible with the refrigerant.
Dependencies are inferred from the claim text.