| 摘要 |
PURPOSE:To enhance the reliance upon the oil supplying performance by furnishing a pressure equalizing pipe for passage of refrigerant gas and an oil equalizing pipe for passage of refrigerator machine oil, and installing partition plates over the refrigerator oil levels in compressor units in their positions close to the oil surfaces. CONSTITUTION:The pressure of a refrigerator machine oil 6 on the side of a sealed vessel 2a heightens in association with rotation of an oil supply pipe 5a interlocking with a motor-driven element 4a of one compressor element 1a in operation, but this pressure is checked because partition plates 14a, 14b are installed over the refrigerator oil 6 levels in the two compressor units 1a, 1b in positions close to the oil surfaces. Thus the refrigerator oil 6 is prevented from flowing into the compressor unit 1b at a standstill otherwise likely to occur via an oil equalizing pipe 8, so that it is possible to equalize the refrigerator oil 6 in the two units 1a, 1b. Part of the refrigerator gas discharged from a discharge hole 10a in the unit la in operation is led via a pressure equalizing pipe 7 into the unit 1b at a standstill, and it is possible to keep constant refrigerator oil 6.
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