Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2008-09-26
2011-12-13
Ghyka, Alexander (Department: 2812)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C416S092000
Reexamination Certificate
active
08075268
ABSTRACT:
A turbine blade with a single tip rail extending along the mid-chord section of the blade tip from the trailing edge and around the leading edge region offset from the leading edge wall and ending just before the pressure side wall of the airfoil. The tip rail includes a forward side with a concave shaped cross section to form a vortex flow of cooling air on the side of the tip rail. A row of cooling holes discharge cooling air into the vortex flow formed along the concave forward side of the tip rail the tip rail also includes an aft side that is slanted downward to also form a vortex flow. The pressure side wall of the airfoil includes a concave shaped slot extending along the pressure side wall just below the tip corner, and a row of cooling holes to discharge film cooling air upward toward the tip corner.
REFERENCES:
patent: 7473073 (2009-01-01), Liang
patent: 8043058 (2011-10-01), Liang
patent: 2005/0111979 (2005-05-01), Liang
patent: 2009/0068021 (2009-03-01), Liang
Florida Turbine Technologies, Inc.
Ghyka Alexander
Ryznic John
LandOfFree
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