Patent ID: 6834501
Filing Date: 2004-12-28
Classification: F01D,F02B,F02C,F04D,Y02T

Abstract:
A combined interstage duct and second-stage volute for a two-stage radial compressor having first-stage and second-stage impellers arranged back-to-back wherein pressurized fluid from the first-stage impeller flows radially outwardly into the interstage duct and flows from the interstage duct radially inwardly into the second-stage impeller and pressurized fluid from the second-stage impeller flows radially outwardly into the second-stage volute, comprisinga structure defining an outer wall and an inner wall spaced radially inward of the outer wall so as to define the interstage duct between a radially inner surface of the outer wall and a radially outer surface of the inner wall, the inner wall being generally scroll-shaped so as to define the second-stage volute, and a vane integrally formed with at least one of the inner and outer walls and extending between the inner and outer walls in the interstage duct, the vane defining an inner passage therein for passage of a discharge duct from the second-stage volute.