Fluid sprinkling – spraying – and diffusing – Including supplemental gas shaping or shielding jet – Plural sets of gas jet orifices
Patent
1993-04-22
1994-09-06
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Including supplemental gas shaping or shielding jet
Plural sets of gas jet orifices
239290, B05B 128
Patent
active
053440781
ABSTRACT:
An improved nozzle assembly for an HVLP paint spray gun. The nozzle assembly includes at least an air cap and a fluid tip, and preferably also includes a baffle for uniformly distributing air flow through the nozzle assembly. The fluid tip has a conical front end which terminates at a fluid discharge orifice adjacent a vertex. The fluid tip is positioned to extend to and to be in axial alignment with an opening in the air cap. The fluid discharge orifice is located at substantially the front face of the opening. The fluid tip and the air cap form an annular air discharge opening. The conical front end of the fluid tip has a vertex angle of from 60.degree. to 90.degree., and preferably about 60.degree.. The air cap has a thin wall surface surrounding the opening and has an annular interior surface surrounding the opening in the shape of a frustum of a right circular cone having a vertex angle of from 100.degree. to 150.degree. and preferably of from about 124.degree. to about 128.degree.. The design of the air cap interior and of the fluid tip maximize the energy in the low velocity air prior to interaction with fluid discharged from the nozzle to optimize atomization efficiency.
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Cedoz Roger T.
Fritz Alan H.
Miller Mark D.
Kashnikow Andres
Ransburg Corporation
Trainor Christopher G.
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