Back to results
US 9,790,810 B2Granted
Stator casing cooling system
AssigneeGE Avio S.r.l.
InventorsDaniele Coutandin, Stefano Zecchi
Life of this patent
Estimating the term…
Abstract
In a gas turbine for aeronautic engines, a stator body delimited by an outer lateral surface is cooled by an air cooling device having a plurality of circumferential tubes for distributing air on the outer lateral surface; each circumferential tube having a plurality of outlets for guiding respective cooling airflows towards the outer lateral surface and into a respective circumferential channel obtained between two groups of circumferential channels adjacent to each other and lapped by the flow of air leaving the circumferential channel.
Claims21
A gas turbine for aeronautic engines comprising a stator comprising:
- an outer casing delimited by an outer lateral surface thereof having a longitudinal generatrix and air cooling means for said outer casing, said cooling means comprising a plurality of circumferential tubes for distributing cooling air on said outer lateral surface and arranged externally to the outer lateral surface itself;
- each circumferential tube being provided with a plurality of outlets of respective cooling airflows incident on corresponding portions of said outer lateral surface, each said surface portion being concave with the concavity facing the respective said outlet and partially delimiting a respective circumferential channel inside which said airflows impact;
- all said circumferential tubes being arranged completely outside of said outer lateral surface, and all said outlets are placed outside to the respective circumferential channels.
Dependencies are inferred from the claim text.