HIGH PRESSURE RATIO MULTI-STAGE CENTRIFUGAL COMPRESSOR
    1.
    发明申请
    HIGH PRESSURE RATIO MULTI-STAGE CENTRIFUGAL COMPRESSOR 审中-公开
    高压比多级离心式压缩机

    公开(公告)号:WO2013133832A3

    公开(公告)日:2014-04-03

    申请号:PCT/US2012028221

    申请日:2012-03-08

    Inventor: SUN LIN BRASZ JOOST

    Abstract: 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.

    Abstract translation: 热泵系统包括制冷剂回路。 第一和第二热交换器布置在制冷剂回路中。 流动反向装置选择性地改变第一和第二热交换器之间的制冷剂回路中的流动方向。 离心压缩机布置在流体回路中,并且具有相对于彼此串联布置的第一和第二叶轮以提供期望的压缩机压力比。 在一个示例中,离心式压缩机将第一和第二叶轮安装在轴的相对端上。 第一和第二叶轮分别包括第一和第二阶段入口和出口。 至少10:1的所需压缩机压力比的一个示例对应于第二级出口压力到第一级入口压力。 第一扩散器布置在第一级出口处,并且第一扩散器是可变几何扩散器。

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