| 摘要 |
PURPOSE:To enhance the performance of a compressor by circulating the lubricating oil through an exchanger outside the enclosed vessel back to it with heat radiation during passage of the outside, sinking the temp. of the whole compressor, suppressing the preheating of suction gas, and by enhancing the lubricating performance. CONSTITUTION:The gas discharged from a compression chamber 11 is fed into the lubricating oil supply end 17a of an oil supply pipe 17 from the foremost discharge end 16a of the discharge pipe 16. Here the lubricating oil 19 stagnating at the bottom of the enclosed vessel 1 is sucked into the oil supply pipe 17 from a gap A formed at the overlapping part of these two, to be sent out of the discharge pipe 16 together with injection gas to a heat exchanger 18 located outside the enclosed vessel 1, and then fed again into this vessel 1. Thus the oil 19 at the bottom of vessel 1 circulates while radiating its heat given from compression element 3 etc. through thermal conduction, so that the temp. of the whole compressor sinks to assure suppression of the preheating of suction gas. Thus the sealing, lubricating and compressing performances are enhanced. |
