Spa nozzle with variable cross-section inertance loops assembly and method
AssigneeDlhbowles, Inc.
InventorsSamuel Bernstein, Alex Dotzler
Life of this patent
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Abstract
A fluidic geometry, chip, and nozzle assembly capable of providing multiple oscillation frequencies without the need for moving parts is contemplated. A fluidic circuit having feedback loops with differing cross-sectional areas will allow for output of oscillating sprays having different frequencies based upon fluid pressure.
Claims16
A nozzle assembly capable of producing a oscillating spray jet with variable oscillation frequencies depending upon fluid pressure, the assembly comprising:
- a fluidic geometry having an inlet admitting pressurized fluid, at least one power nozzle, at least one interaction chamber, and a pair of inertance ports communicating with the fluidic geometry;
- a housing containing the fluidic geometry;
- and
- an inertance loop comprising a tube fluidically connecting the pair of inertance ports, said tube having a variable diameter so that a midpoint along an internal section of the tube is positioned between the pair of inertance ports, said midpoint having a smaller cross-sectional diameter in comparison to the diameter at each of the pair of inertance ports.
A method of controlling the frequency of oscillation in a fluidic circuit, the method comprising:
- providing a fluid having a preselected pressure to the inlet of a fluidic circuit, said fluidic circuit including ports to two separate inertance loops;
- configuring each of the two separate inertance loops a different total cross-sectional area along a length of each of said two separate inertance loops;
- and
- adjusting the preselected pressure of the fluid so as change a frequency of oscillation of fluid dispensed from an outlet of the fluidic circuit.
A fluidic circuit producing an oscillating spray, said oscillating spray having a frequency that changes in response to fluid pressure provided to the circuit, the circuit comprising:
- an inlet feeding fluid to a circuit;
- a power nozzle disposed in the circuit downstream of the inlet;
- a first inertance loop disposed in the circuit having a first pair of communication ports positioned on opposing sidewalls, wherein the first inertance loop is downstream of the inlet and includes a first tube connecting the first pair of communication port so that the first tube has a variable diameter;
- a first interaction chamber positioned adjacent to the first pair of communication ports;
- and
- an outlet positioned downstream of the first interaction chamber, said outlet dispensing an oscillating spray of the fluid at a frequency that changes in response to fluid pressure provided to the inlet.
Dependencies are inferred from the claim text.