US 9,810,148 B2
Self-cooled orifice structure
Tracy A. Propheter-Hinckley, Manchester, CT (US); Dominic J. Mongillo, Jr., West Hartford, CT (US); and Mark F. Zelesky, Bolton, CT (US)
Assigned to United Technologies Corporation, Farmington, CT (US)
Filed by United Technologies Corporation, Hartford, CT (US)
Filed on Jul. 23, 2015, as Appl. No. 14/807,602.
Claims priority of provisional application 62/028,598, filed on Jul. 24, 2014.
Prior Publication US 2016/0025006 A1, Jan. 28, 2016
Int. Cl. F28F 5/06 (2006.01); F02C 7/08 (2006.01); F02C 7/18 (2006.01); F02C 7/264 (2006.01); F23R 3/00 (2006.01); F23R 3/06 (2006.01)
CPC F02C 7/08 (2013.01) [F02C 7/18 (2013.01); F02C 7/264 (2013.01); F23R 3/002 (2013.01); F23R 3/06 (2013.01); F23R 2900/03045 (2013.01); Y02T 50/675 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A self-cooled orifice structure comprising:
a hot side panel;
a cold side panel spaced from the hot side panel;
a continuous first wall extending axially between the hot and cold side panels and spaced radially outward from a centerline;
a continuous second wall having an outward face and an opposite inward face, wherein the inward face defines an orifice that is a dilution hole of a combustor; and
a first plurality of helical vanes projecting laterally, radially, inward from the first wall;
the outward face extending axially between the hot and cold side panels and spaced radially inward from the first wall;
wherein a plurality of helical channels are defined radially between the outward face and the first wall and defined laterally between respective adjacent vanes of the first plurality of helical vanes, and communicate through the hot and cold side panels.