Airfoil component having internal cooling and method of cooling
AssigneeGeneral Electric Company
InventorsAlan L. Webb, Anne M. Isburgh
Life of this patent
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Abstract
The flow of cooling fluid through a core tie hole formed between a pair of internal cooling passageways of an airfoil component is reduced by providing a restriction that meters coolant flow through the inlet passage of one of the passageways so that the pressures in the two passageways are equalized, thereby minimizing the flow of cooling fluid through the hole. The restriction can be a metering plate disposed at the entrance of the inlet passage or a restriction integrally formed in the inlet passage.
Claims12
An airfoil component comprising:
- a first internal cooling passageway having an inlet passage;
- a second internal cooling passageway;
- a rib separating said first and second passageways, said rib having at least one hole formed therein;
- and
- means for metering flow through said inlet passage so that the pressure in said first passageway is substantially equal to the pressure in said second passageway.
An airfoil component comprising:
- a first cooling passageway having an inlet passage;
- an internal serpentine cooling circuit having a plurality of series connected passageways concluding in a final passageway, said final passageway having a smaller pressure than the other ones of said plurality of passageways;
- a rib separating said first passageway and said final passageway, said rib having at least one hole formed therein;
- and
- means for metering flow through said inlet passage so that the pressure in said first passageway is substantially equal to the pressure in said final passageway.
A method of cooling an airfoil component having at least two internal cooling passageways separated by a rib having at least one hole formed therein, said method comprising metering flow into one of said passageways so that the pressures in said two passageways are substantially equal.
Dependencies are inferred from the claim text.