Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2008-12-16
2011-11-15
Zarneke, David (Department: 2891)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C416S09600A
Reexamination Certificate
active
08057183
ABSTRACT:
A turbine rotor blade formed from a main support spar and having a thin thermal skin bonded or formed to the support spar to form the outer airfoil surface of the blade. The main support spar is formed from a plurality of ribs arranged to form a cooling air supply cavity near the leading edge region, a plurality of impingement chambers and a plurality of spent air collector chambers arranged along the pressure side and suction side of the airfoil to form a series of impingement chambers and collector chambers to provide near wall cooling for the thermal skin. A row of exit cooling holes located along the trailing edge discharges the cooling air from the last collector chamber. In another embodiment, some of the collector chambers are connected to rows of film cooling air to discharge film cooling onto the outer airfoil surface. The thermal skin includes micro pin fins on the inner wall to enhance the cooling effect of the impinging cooling air. The entire blade comprises a spar support structure, a thin thermal skin, external coating formed using a metal molecular depositing process to build up the blade as a single piece but with multiple material.
REFERENCES:
patent: 5484257 (1996-01-01), Osborn
patent: 5690472 (1997-11-01), Lee
patent: 5720431 (1998-02-01), Sellers et al.
patent: 5813835 (1998-09-01), Corsmeier et al.
Florida Turbine Technologies, Inc.
Ryznic John
Zarneke David
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