| 摘要 |
Embodiments of a turbomachine (10), such as a gas turbine engine, are provided. In one embodiment, the turbomachine includes an impeller (24), a main intake plenum (20) in fluid communication with the inlet of the impeller, and an impeller shroud recirculation system (12). The impeller shroud recirculation system includes an impeller shroud (42) extending around at least a portion of the impeller and having a shroud port (44) therein. A shroud port cover (46) circumscribes at least a portion of the shroud port and cooperates therewith to at least partially define an impeller recirculation flow path (50, 56). The impeller recirculation flow path has an outlet (66) positioned to discharge airflow into the main intake plenum at a location radially outboard of the shroud port when pressurized air flows from the impeller, through the shroud port, and into the impeller recirculation flow path during operation of the turbomachine. |
