비대칭 랩 스크롤 압축기의 바이패스 밸브 설계에 관한 연구
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The scroll compressor used for heat pump has a wide range of operation condition. To cover both heating and cooling modes, the operating pressure ratio ranges from 1.5 to 6.8. Since the scroll compressor, however, is a type of compressor whose pressure ratio is fixed, some loss in the compression work should be caused by the operation at the pressure ratio different from the built-in pressure ratio. A way of avoiding this problem is to introduce by-pass holes in compression chambers, so that the compressed gas of pressure higher than the discharge pressure, yet not reached to the discharge port can be released earlier through the by-pass holes. In this paper, an optimum positioning of the by-pass hole and the effect of the by-pass valve stiffness on the compressor performance are studied.
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