Patent ID: 8387395
Filing Date: 2013-03-05
Classification: F23R,Y02T

Abstract:
1. An annular combustion chamber for a turbomachine, the chamber comprising: an inner wall with an axially extending upstream fastener rim integrally made therewith and an outer wall with an axially extending upstream fastener rim integrally made therewith, downstream ends of the inner wall and the outer wall defining an outlet of the combustion chamber; and a chamber end wall disposed between said inner and outer walls in an upstream region of said chamber, the chamber end wall presenting a central portion provided with a plurality of orifices, an axially extending outer fastener rim, and an axially extending inner fastener rim, the outer and inner fastener rims being integrally made with the central portion of the chamber end wall, and the chamber end wall and the inner wall being fastened together via the inner fastener rim of the chamber end wall and the upstream fastener rim of the inner wall, the chamber end wall and the outer wall being fastened together via the outer fastener rim of the chamber end wall and the upstream fastener rim of the outer wall, with the inner fastener rim of the chamber end wall and the upstream fastener rim of the inner wall being in direct contact with each other and the outer fastener rim of the chamber end wall and the upstream fastener rim of the outer wall being in direct contact with each other, wherein cooling channels extend between the inner fastener rim of the chamber end wall and the upstream fastener rim of the inner wall, and between the outer fastener rim of the chamber end wall and the upstream fastener rim of the outer wall, from outside to inside of the combustion chamber, a first set of cooling channels being defined by an outer circumferential surface of the upstream fastener rim of the inner wall and an inner circumferential surface of the inner fastener rim of the chamber end wall, and a second set of cooling channels being defined by an inner circumferential surface of the upstream fastener rim of the outer wall and an outer circumferential surface of the outer fastener rim of the chamber end wall.