Fluidic Oscillator Control Ports for Variable Frequency and 3D Jets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Fluidic oscillators are limited by fixed frequency and sweeping angle, which cannot be adjusted for different applications, and they produce only two-dimensional output jets, restricting their use in scenarios requiring variable frequencies and three-dimensional jets.
Innovation Solution
The design incorporates control ports that introduce or suction fluid streams to vary the frequency and sweeping angle, allowing for adjustable output in a three-dimensional space without moving parts, enhancing frequency range and reducing maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional fluidic oscillator is used, then the device has a simple maintenance-free design without moving parts, but the frequency and sweeping angle are fixed for a given flow rate
Solution Approach 1:
The patent applies dynamics by making the oscillator structure adjustable through movable components. The oscillating element can change its position and the oscillation amplitude can be varied, transforming a static fixed-frequency oscillator into a dynamic variable-frequency device while maintaining the maintenance-free advantage of having no traditional moving parts
Solution Approach 2:
The patent changes physical parameters of the oscillator, specifically the geometry and position of the oscillating element, to vary the frequency and sweeping angle. By adjusting parameters such as the gap size, element position, and flow distribution, the oscillator can operate across a wide frequency range (up to 5 times more frequency variation) without changing the basic device structure
2Adaptability or versatility
If a conventional fluidic oscillator is used, then the device operates solely by fluid dynamic principles, but the output jet is two-dimensional which constricts applications requiring three-dimensional jets
Solution Approach 1:
The patent transitions from two-dimensional to three-dimensional jet output by introducing a new spatial dimension to the oscillation. The oscillating element creates flow variations that extend in multiple directions, and the chamber geometry is designed to facilitate three-dimensional flow patterns, enabling applications that require 3D jet coverage
3Adaptability or versatility
If the oscillator geometry is fixed, then the manufacturing is simple, but the sweeping angle cannot be adjusted for different applications
Solution Approach 1:
The patent segments the oscillator into distinct functional components: a fixed chamber, a movable oscillating element, and adjustable geometry parts. This segmentation allows the manufacturing of simple standardized components while enabling adjustment of the sweeping angle through reconfiguration of the movable segments, balancing manufacturing ease with adaptability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enables fluidic oscillators to produce a wider range of frequencies and adjustable sweeping angles, achieving up to five times more frequency variation while maintaining low maintenance and cost, and can create three-dimensional output jets, expanding their application possibilities.
Implementation Method 1
The first attachment wall and 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 second feedback channel, respectively, causing the fluid stream to oscillate between the first attachment wall and second attachment wall of the interaction chamber
Implementation Method 2
The first feedback channel is coupled to the first attachment wall, and the second feedback channel is coupled to the second attachment wall. The first feedback channel and second feedback channel are in fluid communication with the interaction chamber
Implementation Method 3
The first attachment wall and 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 second feedback channel, respectively, causing the fluid stream to oscillate between the first attachment wall and second attachment wall
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
Various implementations include a fluidic oscillator having at least one control port. The at least one control port is for introducing a control fluid into the fluidic oscillator or suctioning the fluid stream from the fluidic oscillator. The introduction of a control fluid into the fluidic oscillator or suction of the fluid stream from the fluidic oscillator alters the frequency and sweeping angle of the oscillating fluid stream as it exits the fluidic oscillator. Various other implementations include a fluidic oscillator having a first control port defined by the first portion of the outlet nozzle and a second control port defined by the second portion of the outlet nozzle. The introduction of a control fluid into the fluidic oscillator or suction of the fluid stream from the fluidic oscillator through the control ports alters the exit angle of the oscillating fluid stream as it exits the fluidic oscillator.