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US 8,573,938 B1Granted
Turbine vane with endwall film cooling
AssigneeFlorida Turbine Technologies, Inc.
InventorGeorge Liang
Life of this patent
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Abstract
A turbine stator vane with endwall cooling that includes a row of submerged cooling air channels or slots that include a metering hole at an inlet end, a diffusion chamber downstream from the metering hole, and an open slot that channels and discharges the cooling air from the slots as film cooling air for the endwalls. Each submerged cooling air slot can be customized for pressure and flow to control metal temperature and cooling capability.
Claims5
A turbine stator vane comprising:
- an airfoil extending between an inner endwall and an outer endwall;
- the inner endwall and the outer endwall each having a leading edge section;
- a submerged cooling air slot formed within the leading edge section of the two endwalls and extending toward a trailing edge side of the endwalls;
- the submerged cooling air slot having a metering hole on an inlet end, a diffusion chamber downstream from the metering hole, and an exit opening onto the endwall surface downstream from the diffusion chamber;
- the diffusion chamber is formed in an outward curving section of the endwall;
- and,
- the metering hole is directed to discharge cooling air to impinge against a hot side of the diffusion chamber.
4 more elements
Dependencies are inferred from the claim text.