Inner plenum dual wall liner
AssigneeUnited Technologies Corporation
InventorJorge Farah
Life of this patent
Estimating the term…
Abstract
An exhaust nozzle assembly includes an inner liner exposed to hot combustion gases and an outer liner spaced a radial distance from the inner liner to form an annular chamber. The inner liner includes a hot side that is directly exposed to the hot combustion gas flow and a cold side is exposed to cooling air within the chamber. The outer liner includes an outer surface exposed to cooling air flow up to a restriction preventing communication of cooling air flow. A plenum is attached to the outer liner to define a plenum chamber that extends into an end portion. The plenum chamber receives cooling air flow from a supply opening and communicates that air to an end portion through a plurality of impingement openings that provide impingement flow of cooling air outboard of the restriction.
Claims17
An exhaust liner assembly comprising:
- an inner liner;
- an outer liner spaced apart from said inner liner, said outer liner including a plurality of openings for cooling air;
- and
- a plenum between said inner liner and said outer liner including a plurality of impingement openings.
An exhaust liner assembly comprising:
- an inner liner;
- an outer liner spaced apart from said inner liner, said outer liner receiving cooling air on an outer surface and directing said cooling air against an outer surface of said inner liner;
- an end segment including a closeout between said inner liner and said outer liner, said end segment isolated from receiving cooling air;
- and
- a plenum chamber within said end segment including a plurality of impingement openings for communicating cooling air against said outer surface of said inner liner.
Dependencies are inferred from the claim text.