US 12,453,977 B2
Variable characteristics fluidic oscillator and fluidic oscillator with three dimensional output jet and associated methods
Mehmet Tomac, Ankara (TR); and James Gregory, Columbus, OH (US)
Assigned to Ohio State Innovation Foundation, Columbus, OH (US)
Filed by Ohio State Innovation Foundation, Columbus, OH (US)
Filed on Mar. 5, 2024, as Appl. No. 18/595,857.
Application 18/595,857 is a continuation of application No. 16/767,847, granted, now 11,958,064, previously published as PCT/US2018/062812, filed on Nov. 28, 2018.
Claims priority of provisional application 62/591,476, filed on Nov. 28, 2017.
Prior Publication US 2024/0207870 A1, Jun. 27, 2024
Int. Cl. B04B 1/08 (2006.01); B05B 1/08 (2006.01); F15C 1/22 (2006.01)
CPC B05B 1/08 (2013.01) [F15C 1/22 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A feedback-type fluidic oscillator, the fluidic oscillator comprising:
a first portion, a second portion, and a middle portion coupled between the first portion and the second portion, the middle portion comprising:
an interaction chamber having a first attachment wall and a second attachment wall opposite and spaced apart from the first attachment wall,
a fluid supply inlet for introducing a fluid stream into the interaction chamber,
a single outlet nozzle downstream of the fluid supply inlet, wherein the fluid stream exits the interaction chamber through the single outlet nozzle,
a first feedback channel coupled to the first attachment wall and a second feedback channel coupled to the second attachment wall, the first feedback channel and the second feedback channel being in fluid communication with the interaction chamber, each of the first feedback channel and the second feedback channel having a first end, a second end opposite and spaced apart from the first end, and an intermediate portion disposed between the first end and the second end, wherein the first end is adjacent the single outlet nozzle and the second end is adjacent the fluid supply inlet, wherein the first attachment wall and the second attachment wall of the interaction chamber are shaped to allow fluid from the fluid stream to flow into the first ends of the first feedback channel and the second feedback channel, respectively, causing the fluid stream to oscillate between the first attachment wall and the second attachment wall of the interaction chamber; and
at least one control port defined by a recessed channel within a wall of the middle portion of the fluidic oscillator, the at least one control port having a flow direction, the at least one control port for introducing a control fluid into the fluidic oscillator in the flow direction of the at least one control port or suctioning the fluid stream from the fluidic oscillator in the flow direction of the at least one control port, wherein, when the introduction of the control fluid, or the suction of the fluid stream, in the flow direction of the at least one control port is varied, an oscillation frequency and a sweeping angle of the fluid stream exiting the single outlet nozzle is varied for a given flow rate,
wherein the fluidic oscillator has a central axis extending from the fluid supply inlet to the single outlet nozzle.