Patent ID: 6669106
Filing Date: 2003-12-30
Classification: C23C,H05H,Y10S

Abstract:
A feedstock injector for axial injection of feedstock into the stream of gas of a spray torch, the injector having a longitudinal axis and comprising:(a) an inlet end for receiving the stream of gas at an upstream end of the injector; (b) an outlet end to discharge the stream of gas at a downstream end of the injector; (c) a converging channel co-axial with the longitudinal axis having a frustroconically shaped wall extending between the inlet and outlet ends and converging downstream of the outlet end toward a point of convergence on the longitudinal axis; (d) a splitting arm extending from a first region of the wall of the converging channel to a second region opposite to the first region, the arm comprising a pair of opposed surfaces, arranged symmetrically with respect to a splitting arm plane which includes the longitudinal axis, and extending in a direction between the inlet and outlet ends; and (e) a feedstock passage passing through the splitting arm, the passage having an outlet end directed toward the point of convergence for directing feedstock axially in a downstream direction from the outlet end.