Multiple flavor post-mix beverage dispensing head

In an open chamber multiple flavor post-mix head for concurrent dispensing and mixing of a selected any one of a plurality of different flavored beverage concentrates and diluent, said head having a nozzle, a diluent outlet in the nozzle, a plurality of discrete concentrate outlets in the nozzle with there being one outlet for each concentrate, a spout under the nozzle for mixing together flows of diluent and a selected concentrate from a respective one of the concentrate outlets, and a downward extending opening out of the bottom of the spout for discharge of mixed beverage from the head;

• the improvement for reducing drippage and intermixing or carry-over between different concentrates, while providing for foamless mixing of diluent and concentrate within the spout, comprising in combination:
• (a) a plurality of surfaces within the spout and below the nozzle outlets, said surfaces being adjoined at intersections and all of such intersections being smoothly radiused,
• (b) a downward facing generally convex bottom surface on the nozzle, said outlets being through the convex surface,
• (c) a continually sharp edged opening between the diluent outlet and the convex surface,
• (d) a continually sharp edged opening between each of the concentrate outlets and the convex surface, and
• (e) a downward facing sharp edge spaced within all of the outlet openings and at the lowest level of the bottom surface of the nozzle.

In an open chambered multiple flavor post-mix head for concurrent dispensing and mixing of a selected any one of a plurality of different flavored beverage concentrates and diluent, said head having a nozzle, a diluent outlet in the nozzle, a plurality of discrete concentrate outlets in the nozzle with there being one outlet for each concentrate, a spout under the nozzle for mixing together flows of diluent and a selected concentrate from a respective one of the concentrate outlets, and a downward extending opening out of the bottom of the spout for discharge of mixed beverage from the head;

• the improvement for dispensing a foamless flow of evenly mixed beverage at variable flow rates, comprising in combination:
• (a) a downward facing generally convex lower surface on the nozzle,
• (b) an upward facing generally concave inner surface within the spout and facing towards and spaced below the lower surface of the nozzle,
• (c) an included angle between the convex lower nozzle surface and the concave inner spout surface which is divergent towards a common centerline of the nozzle and the spout,
• (d) a substantially constant diameter bore downward from the center of the concave inner spout surface, said bore forming the discharge opening from the spout, and in which
• (e) a constant length radius swung from the intersection of the bore surface and the concave inner spout surface is generally tangent to both of the centerline of the bore and the convex lower surface of the nozzle.

In an open chambered multiple flavor post-mix head for concurrent dispensing and mixing of a selected any one of a plurality of different flavored beverage concentrates and diluent, said head having a nozzle, a diluent outlet in the nozzle, a plurality of discrete concentrate outlets in the nozzle with there being one outlet for each concentrate, a spout under the nozzle for mixing together flows of diluent and a selected concentrate from a respective one of the concentrate outlets, and a downward extending opening out of the bottom of the spout for discharge of mixed beverage from the head;

• the improvement for dispensing an evenly mixed beverage at various rates of flow, comprising:
• (a) a downward facing generally convex lower surface on the nozzle,
• (b) an upward facing generally concave inner surface within the spout and facing towards and spaced below the lower surface of the nozzle,
• (c) an included angle between the convex lower nozzle surface and the concave inner spout surface which is divergent towards a common centerline of the nozzle and spout and which is convergent in general proximity to an outer diametric edge of the nozzle lower surface, and
• (d) a toroidal flooding chamber between the nozzle and the spout, said chamber being formed by an upper concavity around and adjacently above said concave inner spout surface and being smooth surfaced and devoid of internal obstructions, said upper concavity being of greater diameter than the concave inner spout surface with the diluent outlet being aimed directly into the flooding chamber and against the upper concavity, and with the concentrate outlets being directed against the concave inner spout surface at a level below the level of the flooding chamber.