Cooling an igniter body of a combustor wall
An assembly is provided for a turbine engine. This turbine engine assembly includes a combustor wall. The combustor wall includes a shell, a heat shield and an annular body. The body extends laterally between an inner surface and an outer surface. The inner surface defines an igniter aperture in the combustor wall. The outer surface is vertically between the heat shield and the shell. The shell defines a first cooling aperture through which air is directed to impinge against the outer surface.
1. An assembly for a turbine engine, the assembly comprising:
an igniter;
a combustor wall including a shell, a heat shield attached to the shell, and an annular body extending vertically between the shell and the heat shield, the annular body defining an igniter aperture in the combustor wall that receives the igniter; and
a mount mounting the igniter to the combustor wall;
wherein a funnel shaped portion of the shell extends circumferentially around the annular body and defines a cooling aperture that is fluidly coupled with a cooling cavity vertically between the shell and the heat shield;
wherein the annular body has a distal end surface, the annular body extends vertically from the heat shield to the distal end surface, and the distal end surface contacts and forms a seal with an interior surface of the shell that faces the heat shield.
2. The assembly of claim 1 , where the funnel shaped portion of the shell is adapted to direct a jet of cooling air through the cooling aperture and into the cooling cavity to impinge against the annular body.