Chambered airfoil cooling
First Claim
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1. An airfoil assembly comprising:
- an airfoil defining at least one internal cavity in communication with a source of cooling air;
a baffle disposed within the at least one internal cavity including a plurality of openings for directing cooling air; and
a plurality of dividers extending between the baffle and walls of the at least one internal cavity to define a plurality of chambers, wherein each of the plurality of chambers include a first open end opening to a leading edge chamber and a second open end opening to a trailing edge chamber and the plurality of openings include at least some openings into each of the plurality of chambers between the leading edge chamber and the trailing edge chamber.
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Abstract
An airfoil assembly includes an airfoil with at least one cavity that is in communication with a source of cooling air. A baffle is disposed within that cavity and includes a plurality of openings for directing cooling air against the hot wall. A plurality of dividers extends between the baffle walls and the internal cavity to direct cooling air toward one of a leading edge chamber and a trailing edge chamber.
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Citations
18 Claims
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1. An airfoil assembly comprising:
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an airfoil defining at least one internal cavity in communication with a source of cooling air; a baffle disposed within the at least one internal cavity including a plurality of openings for directing cooling air; and a plurality of dividers extending between the baffle and walls of the at least one internal cavity to define a plurality of chambers, wherein each of the plurality of chambers include a first open end opening to a leading edge chamber and a second open end opening to a trailing edge chamber and the plurality of openings include at least some openings into each of the plurality of chambers between the leading edge chamber and the trailing edge chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of cooling a turbine airfoil assembly comprising the steps of:
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a) communicating a cool air flow into an inlet opening of a baffle disposed within an internal cavity of an airfoil; b) directing air out of a plurality of openings of the baffle to impinge upon a hot wall of the airfoil, wherein the plurality of openings includes at least some openings for directing air to impinge on a portion of the hot wall of the airfoil between a leading edge and a trailing edge of the airfoil; c) directing cooling air after impingement on the hot wall of the airfoil, transversely with a plurality of dividers defining a corresponding plurality of chambers between the baffle and the hot walls of the airfoil, wherein each of the plurality of chambers include a first open end opening to a leading edge chamber and a second open end opening to a trailing edge chamber; and d) warming the dividers with the transverse flow of air to reduce a difference in temperature between the plurality of dividers and the hot wall. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An airfoil assembly comprising:
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an airfoil defining at least one internal cavity in communication with a source of cooling air; a baffle disposed within the at least one internal cavity including a plurality of openings for directing cooling air; and a plurality of dividers extending between the baffle and walls of the at least one internal cavity to define a plurality of chambers transverse to the flow of cooling air into the baffle, each of the chambers including a first opening open to a leading edge chamber and a second opening open to a trailing edge chamber, wherein the plurality of openings include at least some openings into each of the plurality of chambers transverse to the flow of cooling air into the baffle and each of the plurality of dividers are compliant to accommodate relative thermal expansion between the baffle and the airfoil. - View Dependent Claims (17, 18)
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Specification