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US 5,548,973 AGranted
Sealed type compressor and refrigerating cycle
AssigneeKabushiki Kaisha Toshiba
InventorsKenji Komine, Hiroyuki Isegawa
Life of this patent
Estimating the term…
Abstract
A sealed-type compressor used with HFC refrigerant. The sealed-type compressor houses a motor and compression machinery in a sealed case. The compression machinery includes at least a pair of sliding members wherein one sliding member having aluminum as its main body and having its surface alumite treated and the other sliding member having a metal material. The compressor includes an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members.
Claims48
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including first and second sliding members, the first sliding member comprising aluminum and having its surface alumite treated and the second sliding member being made of a metal material;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including a shaft made of globular graphite cast iron having a ferrite ratio of not more than 40%, and a bearing rotatablly supporting the shaft and made of a graphite cast iron bearing material;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the shaft and the bearing.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery, also housed within the sealed casing, the compression machinery including a shaft made of flaky graphite cast iron having a ferrite ratio of not more than 15%, and a bearing rotatablly supporting the shaft and made of graphite cast iron bearing material;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the shaft and the bearing.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including at least first and second sliding members at least one of which has a material density ratio of at least 95%;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including at least first and second sliding members wherein at least one of the sliding members is made of a material having a density ratio of less than 95%, in which air holes are sealed by a self-lubricating material;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including at least first and second sliding members one of the sliding members being made of a material having a surface hardness of at least Hv 1000 after the sliding surface has been nitride treated, and the other sliding material being made of cast iron containing Mo--Ni--Cr;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including at least first and second sliding members, one sliding member being made of one of a Periodic Table Group IV nitride, Group IV carbide, Group IV oxide and a mixture of these, and the other sliding member being made of a ferrous alloy material;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including at least first and second sliding members one of the sliding members being made of a mixture material of a Periodic Table Group IV oxide and a Group III oxide, and the other sliding member being made of a ferrous material;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including at least first and second sliding members one of the sliding members being made of one of a Periodic Table Group IV carbide, Group IV nitride, Group IV oxide, Group V carbide, Group V nitride, Group V oxide, Group VI carbide, Group VI nitride and Group VI oxide as the parent material and surface treating that parent material surface by a thin film of one of nitride, carbide and oxide of the same Group of the parent material, and the other sliding member being made of a ferrous material;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including a cylinder, a roller housed in the cylinder, a blade dividing the inner space between the cylinder and the roller to suction space and discharge space;
- a blade groove slidablly housing the blade therein;
- the surface accuracy of the blade groove inner surface of at least the suction side out of the cylinder blade grooves which compose the sliding members of the said compressor being formed to not more than 1.6 s;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the compression machinery.
4 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including at least first and second sliding members;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor in which the at least quadrivalent alcohol which forms the at least quadrivalent ester oil being a hindered alcohol.
2 more elements
A compressor for use with an HFC refrigerant, comprising:
- a sealed casing;
- a motor housed within the sealed casing;
- compression machinery also housed within the sealed casing, the compression machinery including at least first and second sliding members;
- and
- an at least quadrivalent ester oil, which is includes pentaerythritol or its multimers in its raw materials, for lubricating the sliding members of the compressor.
2 more elements
A refrigerating cycle comprising:
- a sealed-type compressor including a sealed housing which houses a motor and compression machinery, the compression machinery including at least first and second sliding members, one sliding member having aluminum as its main body and having its surface alumite treated and the other sliding member being made of a metal;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor including a sealed housing which houses a motor and compression machinery, the compression machinery includes a shaft included in the compression machinery has globular graphite cast iron with a ferrite ratio of not more than 40% and a bearing rotatablly supporting the shaft is made of graphite cast iron bearing material;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the shaft and the bearing.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor including a sealed housing which houses a motor and compression machinery, the compression machinery includes a shaft included in the compression machinery has flaky graphite cast iron with a ferrite ratio of not more than 15% and a bearing rotatablly supporting the shaft is made of graphite cast iron bearing material
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the shaft and the bearing.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor including a sealed housing which houses a motor and compression machinery, the compression machinery includes at least a pair of sliding members in which at least one of the sliding member having a material with a density ratio of at least 95%;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor includes a sealed housing which houses a motor and compression machinery, the compression machinery includes at least a pair of sliding members in which at least one of the sliding member having a material with a density ratio of less than 95%, and air holes are sealed by a self-lubricating material at least one of the sliding member having a material with a density ratio of at least 95%;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor includes a sealed housing which houses a motor and compression machinery, the compression machinery includes at least a pair of sliding members in which one of the sliding member is made of a material of surface hardness at least Hv1000 after the sliding surface has been nitride treated, and the other sliding material is made of cast iron containing Mo--Ni--Cr;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor including a sealed housing which houses a motor and compression machinery, the compression machinery includes at least a pair of sliding members is included in the compression machinery, wherein one of sliding member is made of one of a Periodic Table Group IV nitride, Group IV carbide, Group IV oxide and a mixture of these, and the other sliding member is made of a ferrous alloy material;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor including a sealed housing which houses a motor and compression machinery, the compression machinery includes at least a pair of sliding members is included in the compression machinery, wherein one of sliding member is made of a mixture material of a Periodic Table Group IV oxide and a Group III oxide, and the other sliding member is made of a ferrous material;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor including a sealed housing which houses a motor and compression machinery, the compression machinery includes at least a pair of sliding members wherein one of sliding member is made of one of a Periodic Table Group IV carbide, Group IV nitride, Group IV oxide, Group V carbide, Group V nitride, Group V oxide, Group VI carbide, Group VI nitride and Group VI oxide as the parent material and surface treating that parent material surface by a thin film of one of nitride, carbide and oxide of the same Group of the parent material, and the other sliding member is made of a ferrous material;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor includes a sealed housing which houses a motor and rotary compression machinery, the rotary compression machinery includes a cylinder included in the rotary compression machinery, a roller housed in the cylinder and included in the rotary compression machinery, a blade dividing the inner space between the cylinder and the roller to suction space and discharge space and a blade groove slidablly housing the blade therein;
- and the surface accuracy of the blade groove inner surface of at least the suction side out of the cylinder blade grooves which compose the sliding members of the said compressor being formed to not more than 1.6 s;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the compression machinery.
5 more elements
A refrigerating cycle comprising:
- a sealed-type compressor includes a sealed housing which houses a motor and rotary compression machinery, the compression machinery includes at least a pair of sliding members:
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil for the refrigerating machine oil which lubricates the sliding members of the compressor in which the at least quadrivalent alcohol which forms the at least quadrivalent ester oil being a hindered alcohol.
4 more elements
A refrigerating cycle comprising:
- a sealed-type compressor includes a sealed housing which houses a motor and compression machinery, the compression machinery includes at least a pair of sliding members;
- an evaporator;
- a condenser;
- an expansion device;
- an HFC refrigerant which is compressed by the compression machinery;
- and
- an at least quadrivalent ester oil, which is includes pentaerythritol or its multimers in its raw materials, for lubricating the sliding members of the compressor.
4 more elements
Dependencies are inferred from the claim text.