The invention relates to a nozzle for spraying a fluid comprising a vortex chamber (1) with symmetry of revolution about an axis (Z) of origin (O), into which at least two delivery channels ( 2, 3) of said fluid. The chamber (1) is provided with an ejection duct (4) whose axis (Delta) is inclined relative to the axis of symmetry (Z) at an angle (alpha). According to the invention, the duct (4) is made in such a way that its axis (Delta) has an origin (O ') whose position is shifted by a distance (d) with respect to the origin (O) of the axis of symmetry (Z) which depends on the value of the inclination angle (alpha) of the duct, in a direction which depends on the position and the section of said ducts, and on a direction which is opposite at the orientation of said duct (4).
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