Multi-stage fluidic oscillator with variable frequency assembly and method
AssigneeAbc Technologies Inc.
InventorSamuel Bernstein
Life of this patent
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Abstract
A multi-stage fluidic oscillating circuit and system can produce an output spray of selectively varying frequency, even though the fluid supplied to the circuit/system is maintained at a substantially constant pressure. The circuit is characterized by two successive stages, each having a power nozzle aligned around a central axis. Upstream and downstream inertance loops are included in each of the stages, with fluid from one of these loops being selectively released to affect the frequency change in the output spray. The circuit is also characterized by a splitter and optional dog ear style protrusions formed in the outlet of the circuit.
Claims18
A multi-stage fluidic oscillator circuit comprising:
- a first stage consisting of an inlet feeding a fluid directly to a first power nozzle, a first interaction chamber, and an upstream inertance loop defined by tubing or a channel that connects a first pair of ports, with the first pair of ports interposed between the first power nozzle and the first interaction chamber;
- a second stage consisting of a second power nozzle receiving fluid directly from the first interaction chamber, a second interaction chamber feeding fluid into an outlet region immediately downstream from the second interaction chamber, and a downstream inertance loop defined by tubing or a channel that connects a second pair of ports, with the second pair of ports interposed between the second power nozzle and the second interaction chamber;
- wherein the outlet region includes at least one frequency accommodating structure positioned on or between opposing sidewalls defining the outlet;
- wherein the opposing sidewalls defining the outlet extend into the first and second stages so that the first pair of ports are positioned on opposing sidewalls and the second pair of ports are positioned on opposing sidewalls;
- and
- wherein at least one of the upstream or the downstream inertance loop includes a gate to selectively allow ambient fluid communication so as to change a frequency of oscillation in the fluid passing through the outlet.
Dependencies are inferred from the claim text.