Patent ID: 8702020

Claim:
A nozzle system adapted for use with cold fluids, viscous fluids or fluids under light pressure comprising: a source of fluid under pressure, a fluidic oscillator having an inlet in fluid communication with said source and including a power nozzle, said oscillator further including an oscillation chamber having an upstream end with an inlet coupled to said power nozzle for issuing a jet of fluid into said oscillation chamber and a downstream end having an outlet aperture for issuing a jet of fluid into ambient space; said oscillator further including and opposing first and second side walls which intersect opposing top and bottom walls to define an oscillation inducing interaction region in said oscillation chamber for causing said jet of fluid to rhythmically sweep back and forth between said sidewalls in said oscillation chamber; wherein said oscillation inducing interaction region defines a throat width and a power nozzle width; wherein said upstream end comprises a bell-shaped feed that promotes the spreading of the jet as it leaves the power nozzle; wherein the interaction region and feedback channels are quickly filled with fluid from said source at a low pressure and the fluidic oscillator is activated; wherein said oscillation chamber's bottom wall terminates at a leading edge and includes a taper beginning from said leading edge, proximate said inlet; wherein the ratio of interaction region is configured such that said throat width is less than said power nozzle width; wherein a plurality of short posts project inwardly in the feed area to enhance the jet expansion from the power nozzle and to provide a filtering element; and wherein said plurality of short posts comprises a first short post, a second short post and a third short post.