Patent ID: 7823392

Claim:
An arrangement for a turbomachine combustion chamber, comprising: a chamber end wall pierced by at least one substantially circular opening; a deflector mounted from a downstream side of the chamber end wall in the opening; an annulus which mounts the deflector in the opening in the chamber end wall; an injector system associated with the opening and including an annular bowl that is flared downstream which passes through said opening; and a pinch ring mounted on an upstream side of the chamber end wall which is fastened to the annulus, wherein the pinch ring cooperates with the annulus to define an inwardly-open annular groove which allows the injector system to shift off-center relative to the chamber end wall, wherein the deflector includes an annular collar extending radially inwards, and wherein the bowl of the injector system includes at its downstream end an outwardly-open annular groove which is radially aligned with the collar of the deflector such that the collar of the deflector retracts into said outwardly-open annular groove of the bowl when the injector system shifts off-center relative to the chamber end wall.