FIELD: machine building.
SUBSTANCE: annular combustion chamber of the turbomachine includes two circular coaxial walls located one inside another and restricting the chamber. Each of those walls includes at least one annular groove located around longitudinal axis of the chamber and opening to the inner side of the chamber. The groove is fed with cooling air through the holes formed in the wall and opening with one of their sides to the groove, and with the other one to the external part of the chamber. The groove has U- or V-shaped section that extends towards the outlet and includes two annular side surfaces, the front ends of which in the flow direction are connected through the groove base, at the level of which the above holes are taken out. Side surfaces are inclined in relation to the wall zone, at the level of which a groove is located so that cooling air can go deeper into the chamber.
EFFECT: improving the cooling efficiency of the combustion chamber.
12 cl, 5 dwg
