Scroll compressor
AssigneeMitsubishi Electric Corporation
InventorsFumihiko Ishizono, Hideaki Maeyama, Takeshi Fushiki, Taro Kato
Life of this patent
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Abstract
A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.
Claims16
A scroll compressor, in which there are provided a refrigerant, an electric motor portion, a compression mechanism portion compressing the refrigerant, the compression mechanism portion including a sliding portion and being connected to said electric motor portion, and an oil sump for lubricating oil in a sealed container, wherein
- said refrigerant is a mixture of “HFO-1234yf” and “R32” or is a mixture of “HFO-1234yf” and “R41”,
- a sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in said sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed to the refrigerant, and
- the sliding surface of at least one of two components that constitute said sliding portion is subjected to coating treatment or coating film formation treatment with material that does not include iron and aluminum, and that suppresses decomposition or polymerization of said refrigerant, so that an iron metal or an aluminum metal is not directly exposed to the refrigerant.
A scroll compressor, in which there are provided a refrigerant, an electric motor portion, a compression mechanism portion compressing the refrigerant, the compression mechanism portion including a sliding portion and being connected to said electric motor portion, and an oil sump for lubricating oil in a sealed container, wherein
- said refrigerant is a mixture of “HFO-1234yf” and “R32” or is a mixture of “HFO-1234yf” and “R41”,
- a sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in said sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed to the refrigerant, and
- the sliding surface of at least one of two components that constitute said sliding portion is formed with a ceramic material or resin, so that an iron metal or an aluminum metal is not directly exposed to the refrigerant.
Dependencies are inferred from the claim text.