Compressor

#The present invention relates to a compressor that separates, inside thereof, an oil from a working fluid and that is used for air-conditioners, heat pump water heaters, heat pump heaters, refrigerators, automotive air-conditioners, etc.

#Conventionally, there has been known a compressor having a configuration in which a compression mechanism and a motor are disposed in a closed casing, and a working fluid (a refrigerant, for example) discharged from the compression mechanism to an internal space of the closed casing is expelled from the compressor through a discharge pipe. In such a compressor, an oil separating member for separating, by utilizing a centrifugal force, an oil from the working fluid being guided to the discharge pipe is used to suppress exit of the oil through the discharge pipe together with the working fluid. For example, Patent Literature 1 discloses a compressor 500 as shown in FIG. 9.

#The compressor 500 includes a compression mechanism 503 that is disposed at a lower position in a closed casing 501 and discharges a working fluid to an internal space of the closed casing 501 through an outside pipe 502, and a motor 520 disposed above the compression mechanism 503. A discharge pipe 530 is provided at an upper center of the closed casing 501 so as to penetrate the closed casing 501. An oil separating member 510 is fixed to an upper part of a rotor 521 of the motor 520.

#FIG. 1 is a vertical cross-sectional view of a compressor according to Embodiment 1 of the present invention.

#FIG. 2 is a cross-sectional view of FIG. 1 taken along the line II-II.

#FIG. 3 is an exploded cross-sectional view illustrating a portion where an oil separating member is fixed to an end face of a shaft.

#Hereinafter, embodiments of the present invention are described with reference to the drawings.

#FIG. 1 is a vertical cross-sectional view of a compressor 100 according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of FIG. 1 taken along the line II-II. FIG. 3 is an enlarged exploded view of a part of FIG. 1. FIG. 6 is a chart indicating an effect of reducing the amount of oil discharge achieved by an oil separation member 17A employed in the compressor 100. Hereinafter, an example in which a refrigerant is used as the working fluid is described.

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