Patent ID: 8291709

Claim:
An annular combustion chamber of a turbomachine, comprising: inner and outer coaxial walls of revolution extending one inside the other and delimiting therebetween the chamber, each coaxial wall comprising at least one annular groove extending around a longitudinal axis of the chamber and opening out inside the chamber, the groove being supplied with cooling air through orifices formed in said coaxial wall and opening out at a first end of said orifices in the groove and at a second end of said orifices outside the chamber, wherein the groove has in cross section a substantially V shape and comprises inner and outer lateral annular surfaces which diverge one from the other towards a downstream end, wherein the inner lateral annular surface of the outer coaxial wall groove is connected to an inner annular surface of said outer coaxial wall and extends upstream to downstream towards an inside of the chamber and is inclined with respect to said inner annular surface of said outer coaxial wall, and/or the outer lateral annular surface of the inner coaxial wall groove is connected to an outer annular surface of said inner coaxial wall and extends upstream to downstream towards the inside of the chamber and is inclined with respect to said outer annular surface of said inner coaxial wall.