Fluidic Oscillator for Yarn Texturing
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Solution Overview
Problem
Existing thread treatment devices for texturing or swirling yarns suffer from high energy consumption and complex maintenance requirements, leading to inefficient production with irregular knot formation.
Innovation Solution
A device comprising a nozzle with a yarn channel and a fluid oscillator featuring two oscillating loops that generate a controlled oscillating fluid flow, reducing energy consumption and maintenance needs by using pulse-controlled or volume-controlled oscillation without moving parts, ensuring consistent knot regularity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical rotor is used to oscillate the fluid flow, then the oscillation can be controlled, but the device is more susceptible to wear and tear requiring maintenance
Solution Approach 1:
The patent replaces the mechanical rotor-based oscillation system with a fluidic oscillator that uses fluid dynamics principles. The oscillation is achieved through feedback loops and geometric shaping of fluid channels rather than mechanical moving parts, eliminating wear and maintenance requirements while maintaining controlled oscillation capability
Solution Approach 2:
The invention uses pneumatic principles by employing feedback loops where fluid pressure oscillations are generated and amplified through carefully designed channel geometries. The fluid pressure itself becomes the control mechanism, replacing mechanical actuators and enabling maintenance-free operation
2Power
If multiple fluid streams are used to treat the thread, then the treatment effect is enhanced, but the energy consumption increases
Solution Approach 1:
The patent combines multiple fluid stream functions into a single integrated feedback loop system. Instead of using separate nozzles for different fluid streams, the invention merges them into one oscillating fluid stream that achieves the same treatment effect through controlled oscillation, thereby reducing energy consumption
Solution Approach 2:
The invention employs periodic oscillation of a single fluid stream to achieve the treatment effect that previously required multiple continuous streams. The oscillating motion creates alternating high-velocity jets that interlace and texturize the thread effectively while consuming less energy than multiple simultaneous streams
3Manufacturing precision
If a complex nozzle system is used to achieve regular knot formation, then the knot regularity is high, but the device complexity and maintenance requirements increase
Solution Approach 1:
The patent achieves knot regularity by precisely controlling fluid dynamic parameters such as oscillation frequency, amplitude, and pressure within a simplified nozzle design. By optimizing these parameters rather than complicating the nozzle structure, the invention maintains high knot regularity with reduced device complexity
Solution Approach 2:
The invention incorporates feedback loops where the fluid pressure oscillations are sensed and fed back into the system to maintain consistent oscillation patterns. This feedback mechanism ensures regular knot formation by automatically adjusting the fluid flow to maintain optimal oscillation conditions without requiring complex mechanical control systems
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
The solution achieves lower energy consumption and reduced maintenance while maintaining high knot regularity and yarn quality, even at low pressures, by utilizing a fluid oscillator with two oscillating loops that control the fluid flow between outputs connected to the nozzle, ensuring efficient thread treatment.
Implementation Method 1
The oscillation of the fluid flow can be achieved by means of feedback or via time-controlled externally controlled components. In the case of the externally controlled variant, the oscillating loops are omitted. In the case of oscillation by feedback, the fluid flow is oscillated with the help of the oscillating loops.
Implementation Method 2
The oscillation of the fluid flow can be controlled, among other things, by the geometric shape of the oscillator
Implementation Method 3
The fluid oscillator generates an oscillating fluid flow that oscillates between the outlets. Ideally, the fluid flow oscillates completely between the outlets.
Data Source
Figure 1~3
Figure 4~7d
Figure 8a~8c
AI summary
The present invention relates to a device (1) for treating yarns, in particular for tangling yarns, comprising at least one nozzle (40), a fluidic oscillator (2) and a fluid supply unit (10). The fluid supply unit (10) produces a fluid flow (Fs) which oscillates from the fluidic oscillator (2) and is introduced into the nozzles (40, 40') as the main fluid flow (HFs). Said main fluid flow (HFs) tangles a yarn in the nozzles (40, 40').