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DUAL MODE COMPRESSOR WITH AUTOMATIC COMPRESSION RATIO ADJUSTMENT FOR ADAPTING TO MULTIPLE OPERATING CONDITIONS
DUAL MODE COMPRESSOR WITH AUTOMATIC COMPRESSION RATIO ADJUSTMENT FOR ADAPTING TO MULTIPLE OPERATING CONDITIONS
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机译:具有自动压缩比调整功能的双模压缩机,可适应多种运行条件
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摘要
An apparatus and method for compressing gas refrigerant using two different compressors operated alternatively in a series or parallel mode for obtaining two different compression ratios and thereby provide efficient operation for both a relatively lower suction pressure and a relatively higher suction pressure. This system avoids an unbalanced mass flow rate when the compressors are operated in series by unloading a downstream one of the compressors. When operated in the series mode, refrigerant is bypassed back to a suction inlet of the downstream compressor during a portion of a compression stroke of the downstream compressor for equalizing the mass flow rate through the two compressors.
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