Heat transferring cooling features for an airfoil
First Claim
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1. A method of forming cooling passages for an airfoil assembly comprising the steps of:
- (a) forming a first core including impingement structures for forming impingement openings and separation structures for forming channels isolating each of the impingement openings from any other impingement openings;
(b) casting the airfoil assembly with the first core of step (a) disposed within a mold; and
(c) removing the first core from the cast airfoil assembly, wherein the cooling passages include channels isolating adjacent airflow communicated through adjacent impingement openings.
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Abstract
A turbine blade airfoil assembly includes a cooling air passage. The cooling air passage includes a plurality of impingement openings that are isolated from at least one adjacent impingement opening. The cooling air passage is formed and cast within a turbine blade assembly through the use of a single core. The single core forms the features required to fabricate the various separate and isolated impingement openings. The isolation and combination of impingement openings provide for the augmentation of convection and film cooling and provide the flexibility to tailor airflow on an airfoil to optimize thermal performance of an airfoil.
21 Citations
10 Claims
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1. A method of forming cooling passages for an airfoil assembly comprising the steps of:
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(a) forming a first core including impingement structures for forming impingement openings and separation structures for forming channels isolating each of the impingement openings from any other impingement openings; (b) casting the airfoil assembly with the first core of step (a) disposed within a mold; and (c) removing the first core from the cast airfoil assembly, wherein the cooling passages include channels isolating adjacent airflow communicated through adjacent impingement openings. - View Dependent Claims (2, 3, 4, 5)
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6. A method of forming an airfoil assembly comprising:
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forming a first core including structures for forming impingement openings for communicating air from a main cavity against an interior surface of an outer wall of the airfoil assembly, and at least one structure for forming a divider that isolates adjacent impingement openings; supporting the first core within a mold; casting the airfoil assembly with the first core to form a first cavity including impingement openings in communication with a main cavity and the divider isolating adjacent impingement openings; and removing the first core from the cast airfoil assembly. - View Dependent Claims (7, 8, 9, 10)
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Specification