Patent ID: 9746184
Date: 2017-08-29
CPC Classifications: F23R

Claim:
1. A heat shield for a combustor of a gas turbine engine, comprising a heat shield body adapted to be mounted to a combustor shell with a back face of the heat shield body in spaced-apart facing relationship with the combustor shell to define an air gap between the heat shield body and the combustor shell, at least one nozzle opening defined in the heat shield body, a nozzle opening boss bordering the at least one fuel nozzle opening and configured for extending from the back face of the heat shield body across the air gap for sealing engagement with an adjacent combustor part, an annular array of effusion holes adjacent the nozzle opening boss, the effusion holes extending through the heat shield body and configured to pass cooling air from the back face to a front face of the heat shield body, and fins interspersed between the effusion holes on the back side of the heat shield, wherein said effusion holes and said fins are located in a non-impingement cooled region of the heat shield, wherein the annular array of effusion holes comprises an inner and an outer annular row of effusion holes, and wherein the fins comprise an inner and outer annular row of fins, the fins of the inner annular row of fins extending in between pairs of adjacent effusion holes of the inner annular row of effusion holes, the fins of the outer annular row of fins extending in between pairs adjacent effusion holes of the outer annular row of effusion holes.