Multi-stage impeller usable with a compressor and compressor with multi-stage impeller

Abstract

A compressor includes a rotatable impeller configured to increase a pressure of one or more fluids from a compressor inlet to a compressor outlet. The compressor includes a primary and a secondary impeller section respectively having a first and a second set of impeller blades and respectively configured to pressurize a first and a second fluid source. In another aspect, a refrigeration system includes a condenser, an evaporator, an expansion apparatus, an economizer or intercooler, and a compressor. The compressor includes a rotatable impeller with a primary impeller section having a first set of impeller blades and configured to pressurize a refrigerant received from the evaporator, and a secondary impeller section with a second set of impeller blades configured to pressurize refrigerant received from the economizer or intercooler.

Dependencies are inferred from the claim text.