Engine component for a gas turbine engine
AssigneeGeneral Electric Company
InventorsRobert Francis Manning, Ronald Scott Bunker, Robert Frederick Bergholz, Robert David Briggs
Life of this patent
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Abstract
An engine component for a gas turbine engine includes a film-cooled recess comprising a contoured portion defining a step. A hot surface facing hot combustion gas and a cooling surface facing a cooling fluid flow are fluidly coupled by a passage through the engine component. The passage further comprises an inlet in the cooling surface and an outlet in the step. The inlet, passage and outlet are oriented such that the cooling fluid flowing through the passage and exiting the outlet diffuses within the contoured portion prevents premature mixing out with the hot fluid flow.
Claims14
An engine component for a gas turbine engine, the gas turbine engine generating a hot combustion gas flow, comprising:
- a wall separating the hot combustion gas flow from a cooling fluid flow and having a hot surface having a primary plane facing the hot combustion gas flow and a cooling surface facing the cooling fluid flow;
- a recess formed in the hot surface below the primary plane and at least partially defined by a step, a bottom wall extending from the step, and a ramp extending downstream from the bottom wall and upwardly toward the primary plane;
- and
- at least one film hole having an inlet provided on the cooling surface, an outlet provided on a junction where the step and the bottom wall meet, such that the outlet is at least partially contained on both the step and the bottom wall, and a passage connecting the inlet and the outlet.
A method of cooling an engine component for a gas turbine engine, the gas turbine engine generating a hot combustion gas flow, comprising:
- a wall separating the hot combustion gas flow from a cooling fluid flow and having a hot surface having a primary plane facing the hot combustion gas flow and a cooling surface facing the cooling fluid flow;
- a recess formed in the hot surface below the primary plane and at least partially defined by a step, a bottom wall extending from the step, and a ramp extending downstream from the bottom wall and upwardly toward the primary plane;
- and at least one film hole having an inlet provided on the cooling surface, an outlet provided on a junction where the step and the bottom wall meet, such that the outlet is at least partially contained on both the step and the bottom wall, and a passage connection the inlet and the outlet;
- the method comprising:
- generating a flow of the cooling fluid into the recess.
Dependencies are inferred from the claim text.