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Multi-stage compression type rotary compressor and a setting method of displacement volume ratio for the same

  • US 20040071576A1
  • Filed: 08/22/2003
  • Published: 04/15/2004
  • Est. Priority Date: 08/27/2002
  • Status: Active Grant
First Claim
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1. A multi-stage compression type rotary compressor comprising:

  • a sealed vessel;

    an electrical-power element having a rotary shaft; and

    a first rotary compression element and a second rotary compression element driven by the rotary shaft of the electrical-power element, wherein the electrical-power element and the first and second rotary compression elements are arranged in the sealed vessel, wherein a refrigerant compressed by the first rotary compression element is compressed by the second rotary compression element, and wherein the refrigerant comprises a combustible refrigerant, and the refrigerant compressed by the first rotary compression element is discharged into the sealed vessel, and the discharged refrigerant is under a medium pressure and is further compressed by the second rotary compression element.

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