Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2006-04-18
2008-12-16
Kershteyn, Igor (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C415S115000
Reexamination Certificate
active
07465154
ABSTRACT:
A gas turbine engine component has a cooling scheme that utilizes an impingement tube to cool the suction wall and the pressure wall of a mid portion of an airfoil. The impingement tube is formed to not have impingement holes on an end of the impingement tube spaced toward the trailing edge along the suction wall. Impingement holes are formed in the same portion on a side of the impingement tube facing the pressure wall. Pedestals extend from an inner face of the suction wall toward the impingement tube in this area. The use of the pedestals over this area provides greater cooling to a focused area on the suction wall of the airfoil that might otherwise receive inadequate film cooling.
REFERENCES:
patent: 4297077 (1981-10-01), Durgin et al.
patent: 5711650 (1998-01-01), Tibbott et al.
patent: 6652220 (2003-11-01), Powis et al.
patent: 6932568 (2005-08-01), Powis et al.
Devore Matthew
Paauwe Corneil
Carlson & Gaskey & Olds
Kershteyn Igor
United Technologies Corporation
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