초록 ▼

A fluidic oscillator is disclosed for providing oscillating flow to outlet ports (172, 173). The fluid oscillator (100) in one embodiment has no fluid communication between a pair of diverging diffuser legs (163, 164) downstream of the upstream edge (169) of a splitter (165) and no fluid communicati

A fluidic oscillator is disclosed for providing oscillating flow to outlet ports (172, 173). The fluid oscillator (100) in one embodiment has no fluid communication between a pair of diverging diffuser legs (163, 164) downstream of the upstream edge (169) of a splitter (165) and no fluid communication between a chamber (162) and either of the diverging diffuser legs downstream of the splitter edge. In other embodiments, a turbulent flows generator is formed by use of bump step (202), pins (220, 230), surface discontinuities (250) or a combination thereof.

대표청구항 ▼

[ I claim:] [1.] A method of generating pulsating fluid pressures that are applied to an environment, comprising the steps of:providing a fluidic oscillator, comprising a body forming an inlet passage, a jet nozzle, a chamber adjacent said jet nozzle, a splitter having an upstream edge with a latera

[ I claim:] [1.] A method of generating pulsating fluid pressures that are applied to an environment, comprising the steps of:providing a fluidic oscillator, comprising a body forming an inlet passage, a jet nozzle, a chamber adjacent said jet nozzle, a splitter having an upstream edge with a lateral width, said upstream edge disposed substantially perpendicular to the direction of flow through said nozzle and defining a portion of a downstream wall of said chamber opposite said nozzle, first and second diffuser legs, said diffuser legs diverging laterally from one another, each said diffuser leg including an upper end and an outlet passage, each said upper end being disposed laterally adjacent said upstream edge of said splitter, said upper ends being disposed on opposite sides of said splitter from one another, each said diffuser leg running continuously between its respective upper end and its respective outlet passage and having no other fluid connection;flowing fluid through said nozzel at a substantially continuous rate to generate vortices which are carried into one of said diffuser legs by a fluid stream which is attached to a lateral wall of said chamber causing the flow to be primarily through said one of said diffuser legs until friction pressure in said one of said diffuser legs caused by said vortices causes the main flow to shift until the flow is primarily through the other of said diffuser legs;whereby said primary flow will continue to switch between said one of said diffuser legs and said other of said diffuser legs in an oscillating manner.