Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2008-10-20
2011-11-22
Chaudhari, Chandra (Department: 2891)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
Reexamination Certificate
active
08061989
ABSTRACT:
A turbine blade with a pressure side wall having a plurality of radial extending near wall cooling channels to provide near wall cooling, where each radial channel includes a converging channel with an opening that discharges cooling air out from the blade tip in a direction offset toward an on-coming hot gas flow to reduce leakage. A plurality of radial cooling channels extends along the pressure side wall and a concave shaped depression formed in the pressure side wall adjacent to the radial channels provides a deflecting surface for the flow on the pressure side wall surface. If the blade tip forms a squealer pocket, then the suction side tip rail can also include radial extending channels with converging channels formed within the tip rail to discharge cooling air toward the leakage at the suction side tip rail.
REFERENCES:
patent: 5702232 (1997-12-01), Moore
patent: 7674093 (2010-03-01), Lee et al.
patent: 7766616 (2010-08-01), Baldauf et al.
Chaudhari Chandra
Florida Turbine Technologies, Inc.
Ryznic John
LandOfFree
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