COMBUSTOR HEAT SHIELD

摘要

A heat shield for a combustor of a gas turbine engine has a heat shield adapted to be mounted to a combustor wall with a back face of the heat shield in spaced-apart facing relationship with an inner surface of the combustor wall to define an air space. Concentric rails extend from the back face of the heat shield across the air space surrounding a nozzle opening in the heat shield. Effusion holes are provided between the concentric rails and extend between the back and front faces. Fins may be placed between the effusion holes.

主权项

1. A heat shield for a combustor of a gas turbine engine, comprising a heat shield body adapted to be mounted to a combustor wall with a back side of the heat shield body in spaced-apart facing relationship with an inner surface of the combustor wall to define an air space between the heat shield body and the combustor wall, at least one nozzle opening defined in the heat shield body; rails extending from the back side of the heat shield body across the air gap, the rails including a pair of concentric, spaced apart rings defining a toroidal region, and effusion holes located in the toroidal region and through the heat shield body and configured to pass cooling air from the back side to a front side of the heat shield.