Nebulizer

Claim 1

In a nebulizer having a spray orifice means for directing an aerosol upwardly therefrom to an otulet pipe, and a target between said spray orifice means and said outlet pipe against which said aerosol is directed, the improvement comprising: said target having a convex surface forming an impingement surface facing said spray orifice means and a hood having an annular skirt with a bottom edge forming a single circular portion, the hood being otherwise enclosed, the center of said convex surface being substantially coaxial with said spray orifice means and centered relative to said circular port wherein said spray orifice means is circular and said convex surface has a diameter greater than the diameter of said orifice, and the diameter of said circular port is greater than the diameter of said target, said spray orifice means comprising a spray nozzle orifice and a second spray orifice, said spray nozzle orifice being spaced further from said target than said second spray orifice, the distance between said spray nozzle orifice and the center of said target surface being at least as great as the diameter of said spray nozzle orifice, wherein the diameter of said second spray orifice is greater than the diameter of said spray nozzle orifice and adapted to limit the size of an aerosol cone sprayed from said spray nozzle orifice and wherein an outer limit of a cone created by extending a straight line from the edge of said spray nozzle orifice and the edge of said second spray orifice must intersect said target impingement surface whereby all of said aerosol cone impinges said target surface.