Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2006-02-15
2008-08-19
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C416S09700R
Reexamination Certificate
active
07413406
ABSTRACT:
A turbine blade is cooled by cooling air that flows through a radial cooling channel. The turbine blade includes a root and an airfoil. The flow of cooling air into the cooling channel is limited by a pre-meter orifice to provide a reduced pressure within the cooling channel. The pressure drop results from the cross-sectional area of the pre-meter orifice being less than the cross-sectional area of the adjacent cooling channel. After flowing through the cooling channel, the cooling air exits the cooling channel through a film hole to form a film layer over the airfoil to cool and insulate the turbine blade.
REFERENCES:
patent: 4626169 (1986-12-01), Hsing et al.
patent: 6997679 (2006-02-01), Beddar
patent: 2002/0028140 (2002-03-01), Jacala
patent: 2006/0062671 (2006-03-01), Lee et al.
Chin Kar D.
Pietraszkiewicz Edward F.
Sharma Om P.
Kinney & Lange , P.A.
Look Edward K.
United Technologies Corporation
White Dwayne J
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