Bowles Fluidics Corporation

Dlhbowles, Inc.

Shridar Gopalan

Gregory Adam Russell

Russell Hester

Eric Koehler

Srinivasaiah Sridhara

Kerrie Allen

Chris South

A long throw Pop-Up Irrigation Nozzle assembly has no oscillating or rotating parts and includes a cylindrical body having a fluid inlet and a sidewall defining at least one fluidic circuit configured to generate a selected spray pattern when irrigation fluid flows through the body. In order to throw long distance, droplet velocity, droplet size and droplet initial aim angle determine the throw to provide a low precipitation rate ('PR') for fluidic sprays. The nozzle assembly and method of the present invention achieve a PR of 1 in/hr or less and good spray distribution with a scheduling coefficient ('SC') of about 1.5 without utilizing any moving components to provide a significantly more cost effective nozzle assembly, as compared to prior art rotator nozzles.

Irrigation nozzle assembly and method

A fluid spraying or nozzle system adapted for use with cold fluids, viscous fluids or fluids under light pressure includes a fluidic oscillator having a power nozzle and an oscillation chamber coupled to the power nozzle for issuing a jet of fluid into the oscillation chamber and an outlet aperture spraying a jet of fluid into ambient space. The oscillator's walls define an oscillation inducing interaction region causing the jet of fluid to rhythmically sweep back and forth between the sidewalls in the oscillation chamber. The oscillation inducing interaction region defines an outlet throat width which is adapted to work with the power nozzle's width and an a bell-shaped feed that spreads the fluid jet as it leaves the power nozzle, so that the interaction region and feedback channels are quickly filled with fluid at a low pressure and the fluidic oscillator is activated to generate a desired fan pattern of fluid spray.

Nozzle and fluidic circuit adapted for use with cold fluids, viscous fluids or fluids under light pressure

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Westminster, MD, United States of America

Shridar Gopalan