Centrifugal compressor with reverse overhanging volute

A centrifugal compressor for a chiller includes a first stage impeller, a first stage diffuser, a second stage impeller, a second stage diffuser, and a second stage volute. The first stage impeller is disposed to receive refrigerant from the inlet. A second stage volute is disposed downstream of the second stage diffuser to receive the refrigerant after the refrigerant has been compressed. The second stage volute has a reverse overhang configuration. 一种用于冷却器的离心压缩机，该离心压缩机包括第一级叶轮、第一级扩散器、第二级叶轮、第二级扩散器和第二级蜗壳。第一级叶轮被设置为从入口接收制冷剂。第二级蜗壳被设置在第二级扩散器的下游，以在制冷剂已被压缩之后接收制冷剂。第二级蜗壳具有反向悬垂构造。