Thermally balanced near wall cooling for a turbine blade

Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...

Reexamination Certificate

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Reexamination Certificate

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07967566

ABSTRACT:
A turbine blade including an airfoil having an airfoil outer wall extending radially outwardly from a blade root to a blade tip. The airfoil outer wall includes a pressure sidewall and a suction sidewall, and the pressure and suction sidewalls are joined together at chordally spaced leading and trailing edges of the airfoil. A pressure side serpentine cooling path extends adjacent the pressure sidewall and a suction side serpentine cooling path extends adjacent the suction sidewall. The pressure side cooling path conducts cooling fluid in a first chordal direction between the leading and trailing edges, and the suction side cooling path conducts cooling fluid in a second chordal direction, opposite the first chordal direction, between the leading and trailing edges. A central partition extends chordally through the airfoil, and a transverse passage extends through the central partition and connects the pressure side cooling path to the suction side cooling path.

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U.S. Appl. No. 11/527,307, filed Sep. 2006, Liang George.

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