发明名称 |
HIGH PRESSURE RATIO MULTI-STAGE CENTRIFUGAL COMPRESSOR |
摘要 |
A heat pump system includes a refrigerant circuit. First and second heat exchangers are arranged in the refrigerant circuit. A flow reversing device selectively changes a direction of flow in the refrigerant circuit between the first and second heat exchangers. A centrifugal compressor is arranged in the fluid circuit and has first and second impellers arranged in series relative to one another to provide a desired compressor pressure ratio. In one example, the centrifugal compressor mounts the first and second impellers on opposing ends of a shaft. The first and second impellers respectively include first and second stage inlets and outlets. One example desired compressor pressure ratio of at least 10:1 corresponds to a second stage outlet pressure to a first stage inlet pressure. A first diffuser is arranged at the first stage outlet, and the first diffuser is a variable geometry diffuser. |
申请公布号 |
WO2013133832(A2) |
申请公布日期 |
2013.09.12 |
申请号 |
WO2012US28221 |
申请日期 |
2012.03.08 |
申请人 |
DANFOSS TURBOCOR COMPRESSORS B.V.;SUN, LIN;BRASZ, JOOST |
发明人 |
SUN, LIN;BRASZ, JOOST |
分类号 |
F25B30/02 |
主分类号 |
F25B30/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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