Patent ID: 9303514
Filing Date: 2016-04-05
CPC Classification: F01D,Y10T

Claim Text:
1. A fluid working apparatus, comprising: a housing structure with a housing inlet and a housing outlet, the housing structure including an outer housing member defining a circumferential tubular portion with an inner surface, and an inner housing member positioned within the outer housing member and having an outer surface spaced from the inner surface such that a working flow chamber is defined between the radially inner most portions of outer surface and the inner surface; a working assembly having an inlet side and an outlet side with at least one rotor having a plurality of blades directly coupled to a hub so as to be positioned between the inlet and outlet sides, the working assembly positioned in the housing structure such that the rotor is rotatably supported therein with the rotor blades extending into the working flow chamber; and at least one single return chamber positioned within the tubular portion and configured to return fluid flow from the outlet side of the working assembly to the inlet side of the working assembly, whereby all of a working fluid flows through