Chamber between an inlet nozzle and an obturator, for a turbomachine injector

An inlet body for a fluid injector for a turbomachine, comprising:

• an external shell comprising an inner surface, wherein the external shell partially delimits the injector outwardly,
• a sealing valve configured to open when the fuel pressure exceeds a first threshold, wherein the valve is housed inside the shell and wherein the valve comprises:
• an obturator movable with respect to the shell between an open position and a closed position, wherein the obturator comprises an inner duct and at least one intake duct opening into the inner duct, and
• a seat for the obturator, wherein the seat is fixed with respect to the shell, wherein the seat defines a fluid passage aperture to the inner duct, wherein the intake duct is configured to fluidly connect the inner duct to the aperture when the obturator is in the open position,
• wherein the obturator is configured to cooperate with the seat so as to block fluid passage between the aperture and the inner duct when the obturator is in the closed position,
• wherein the inner surface includes a recess which at least partially delimits a chamber, wherein the chamber communicates with the aperture and with the at least one intake duct in the open position of the obturator.

A fluid injector comprising an inlet body comprising:

• an external shell comprising an inner surface, wherein the external shell partially delimits the injector outwardly,
• a sealing valve configured to open when the fuel pressure exceeds a first threshold, wherein the valve is housed inside the shell and wherein the valve comprises:
• an obturator movable with respect to the shell between an open position and a closed position, wherein the obturator comprises an inner duct and at least one intake duct opening into the inner duct, and
• a seat for the obturator, wherein the obturator is fixed with respect to the shell, wherein the seat defines a fluid passage aperture to the inner duct, wherein the intake duct is configured to fluidly connect the inner duct to the aperture when the obturator is in the open position,
• wherein the obturator is configured to cooperate with the seat so as to block fluid passage between the aperture and the inner duct when the obturator is in the closed position,
• wherein the inner surface includes a recess which at least partially delimits a chamber, wherein the chamber communicates with the aperture and with the at least one intake duct in the open position of the obturator.