JPWO2021077077A5 - - Google Patents

Claims (18)

A fluid oscillator circuit for a nozzle assembly, the circuit comprising:
a circuit member defining first and second opposing planes;
at least one inlet through the circuit member to enable fluid communication through the circuit member ;
i) formed in said first plane and ii) defined by an upstream perimeter wall located opposite two downstream perimeter wall portions ;
i) defined by opposing ends of each of said two downstream peripheral wall portions, ii) disposed along said downstream end in said first plane, and iii) oscillating in a plane coincident with said first plane. an outlet configured to dispense fan spray;
one or two power nozzles;
Each power nozzle is i) formed in said first plane, ii) fluidly connected to said at least one inlet, and iii) defined by a respective end of said upstream peripheral wall and one of said downstream peripheral wall portions. is,
The fluid oscillator circuit , wherein the upstream peripheral wall has a dome or mushroom shape with an apex projection extending towards the outlet , and a middle portion of the upstream peripheral wall is disposed on each side of the apex projection. The fluidic oscillator circuit of claim 1 , wherein the apex protrusion has a V-shape and each of the intermediate portions has a C-shape . 2. The fluidic oscillator circuit of claim 1, wherein the apex protrusion and the outlet are each located at a central axis extending along the length of the first plane . The fluidic oscillator circuit of claim 1 , wherein each of the downstream peripheral wall portions has a C-shape . 5. The fluidic oscillator circuit of claim 4 , wherein each of the downstream peripheral wall portions includes an inner end portion defining opposite sides of the outlet . 6. The fluidic oscillator circuit of claim 5 , wherein each of the inner end portions includes a straight wall portion aligned perpendicular to the central axis . 4. The fluidic oscillator circuit of claim 3 , wherein the two downstream peripheral wall portions form mirror images about the central axis . 4. The fluidic oscillator circuit of claim 3 , wherein first and second power nozzles are provided on opposite sides of the central axis . first and second inlets are provided on opposite sides of the central axis, the first inlet feeding only the first power nozzle and the second inlet feeding only the second power nozzle. 9. The fluidic oscillator circuit of claim 8 . at least one end of the upstream peripheral wall defines a finger, the finger of the upstream peripheral wall being configured to extend one power nozzle into a central portion of the interaction region; A fluidic oscillator circuit according to claim 1. A distal end of the downstream peripheral wall portion defining the one power nozzle has a finger, the finger of the downstream peripheral wall portion directing the one power nozzle into a central portion of the interaction area. 11. The fluidic oscillator circuit of claim 10 , wherein the fluidic oscillator circuit is configured to elongate . 12. A second power nozzle is configured to have the same fingers on each of the distal ends of the upstream peripheral wall and the downstream peripheral wall portion compared to the one power nozzle . fluid oscillator circuit. The fluidic oscillator circuit of claim 1 , wherein the oscillating fan spray has an angle that is at least 35 degrees wide in a plane . 2. The fluidic oscillator circuit of claim 1 , wherein the oscillating fan spray has an angle in a plane up to a width of at least 60 degrees . The fluidic oscillator circuit of claim 1 , wherein the outlet has an asymmetric configuration or is positioned at a yaw angle with respect to the downstream end . 2. The fluid oscillator circuit of claim 1 , wherein two power nozzles are provided, the power nozzles not being fed from a common plenum. 2. The fluidic oscillator circuit of claim 1 , wherein the apex protrusions are equidistantly disposed from each end of the upstream peripheral wall . The one or two power nozzles generate corresponding fluid jets within the interaction region, and the apex protrusion is configured to direct or stabilize a vortex of the corresponding fluid jet within the interaction region. 2. The fluidic oscillator circuit of claim 1 , wherein the fluidic oscillator circuit is configured on the upstream peripheral wall between the distal ends at a location selected to be .