Fluid reaction surfaces (i.e. – impellers) – With fluid passage in working member communicating with... – Discharge solely at periphery normal to rotation axis
Reexamination Certificate
2006-08-25
2009-02-24
Nguyen, Ninh H (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With fluid passage in working member communicating with...
Discharge solely at periphery normal to rotation axis
C416S09700R
Reexamination Certificate
active
07494319
ABSTRACT:
A turbine blade with a squealer tip, the squealer tip being formed by a tip rail extending along the suction side wall of the blade from a point just passed the leading edge of the tip to the trailing edge of the blade, and the tip floor being slanted from the tip rail downward to the pressure side wall of the blade. A first cooling hole opens onto the tip floor at a location adjacent to the pressure side wall of the tip rail, the wall being concave in shape to redirect the flow along the curvature toward the pressure side. A second cooling hole located on the pressure side wall and slanted upward injects cooling air to push the hot gas flow up and over the tip floor. In a second embodiment, the tip floor includes a deflector upstream from and adjacent to the first cooling hole to push the flow upward from the first cooling hole.
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patent: 6991430 (2006-01-01), Stec et al.
patent: 6994514 (2006-02-01), Soechting et al.
patent: 7351035 (2008-04-01), Deschamps et al.
Florida Turbine Technologies, Inc.
Nguyen Ninh H
Ryznic John
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