Patent ID: 11953015
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A centrifugal compressor for a chiller comprising:
a first stage impeller arranged to receive refrigerant from an inlet;
a first stage diffuser;
a second stage impeller;
a second stage diffuser;
a second stage volute forming member defining a second stage volute, the second stage volute being disposed downstream of the second stage diffuser to receive the refrigerant after the refrigerant has been compressed, the second stage volute having a reverse overhung configuration;
a compressor housing enclosing the first stage impeller and the second stage impeller; and
an insert disposed around an outer periphery of the second stage impeller and interposed between the second stage volute forming member and the compressor housing,
the insert including a diffuser defining wall surface that opposes an inner surface of the second stage volute forming member, and
the second stage diffuser being defined between the second stage volute forming member and the diffuser defining wall surface of the insert.