Airfoil having multi-passage baffle
AssigneeGeneral Electric Company
InventorsRobert A. Frederick, Mark S. Honkomp
Life of this patent
Estimating the term…
Abstract
A hollow impingement baffle includes a septum extending between its bottom and top and spaced between its forward and aft edges to define a forward manifold and an aft manifold. The baffle includes an inlet having a forward portion for channeling a first portion of compressed air to the forward manifold, and an aft portion for channeling a second portion of the compressed air into the aft manifold with a predetermined pressure drop for obtaining a lower pressure in the aft manifold relative to a higher pressure in the forward manifold. The baffle includes impingement holes for discharging the compressed air against the inner surface of a surrounding airfoil for the impingement cooling thereof.
Claims9
An apparatus comprising:
- a hollow baffle having first and second sides joined together at a forward edge and at an aft edge, a top, and a bottom;
- a septum extending between said baffle bottom and top and spaced between said forward and aft edges to define a forward manifold extending from said septum to said forward edge, and an aft manifold extending from said septum to said aft edge;
- an inlet disposed at said top for channeling compressed air into said baffle, said inlet including a forward portion disposed in flow communication with said forward manifold for channeling a first portion of said compressed air directly into said forward manifold, and an aft portion disposed in flow communication with said aft manifold for channeling a second portion of said compressed air directly into said aft manifold, said inlet aft portion being sized for providing a predetermined pressure drop in said compressed air second portion so that said compressed air second portion inside said aft manifold is at a pressure less than that of said compressed air first portion inside said forward manifold;
- and
- said baffle first and second sides include impingement holes for discharging said compressed air from said forward and aft manifolds.
Dependencies are inferred from the claim text.