| 摘要 |
PURPOSE:To reduce the load on starting a compressor by permitting communication between the suction port bottom part of the compressor and an oil separator part through a check valve which permits the flow to an oil separator only and recovering the oil left in the compressor in stop state into an oil separator. CONSTITUTION:The bottom part of a suction port 8 of a compressor body communicates to the inside of an oil separator 11 through a check valve 21 which permits the flow to the oil separator 11 side only. Further, the oil separator 11 is constituted so as to be positioned under the compressor body. Since, with such constitution, the check valve 21 is closed during the operation, the ordinary operation is carried out, and if the operation is brought into stop, the high pressure discharge gas in the oil separator 11 reversely flows into the compressor body, passing through a discharge pipe 10, and the pressure in the suction port 8 rises. When the pressure in the suction port 8 increases, the check valve 21 is opened by the pressure difference from the pressure of the oil separator 11, and the oil left in the compressor body is recovered into the oil separator 11 by the pressure difference and the dead weight.
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