| 主权项 |
1. A fluid working apparatus comprising:
a housing structure with a housing inlet and a housing outlet; a working assembly having an inlet side and an opposite outlet side with at least one rotor having a plurality of blades positioned between the inlet and outlet sides, the working assembly positioned in the housing such that the rotor is rotatably supported therein; a circumferential inlet area defined between the housing structure and the inlet side of the working assembly; a circumferential outlet area defined between the housing structure and the outlet side of the working assembly; and at least one return assembly configured to return fluid flow from the outlet side of the working assembly to the inlet side of the working assembly, whereby a working fluid passes through the housing inlet, through a first circumferential portion of the circumferential inlet area, from the inlet side of the working assembly to the outlet side thereof while workingly engaging a first subset of the rotor blades, through a first circumferential portion of the circumferential outlet area and then through the at least one return assembly to a second circumferential portion of the circumferential inlet area, from the inlet side of the working assembly to the outlet side thereof while workingly engaging a second subset of the rotor blades, through a second circumferential portion of the circumferential outlet area and thereafter out of the housing outlet. |
