Piezoelectric Yarn Structure for Restoring Filter Charge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electret filters experience a rapid decrease in dust collection efficiency due to the loss of electrical potential over time, which is not restored, leading to diminished dust collection power.
Innovation Solution
A yarn comprising an electric field-forming filament that generates a controlled surface electrical potential by applying and maintaining or releasing an external force, allowing for the generation, maintenance, or inversion of surface electrical potential as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electret filters use fibrous materials with chargeability, then dust collection efficiency is initially achieved, but the electrical potential disappears or decreases with time leading to loss of dust collection power
Solution Approach 1:
The invention transforms the static electrical potential system into a dynamic one by introducing piezoelectric fibers that can actively generate and restore electrical potential through mechanical stress application. The system transitions from passive charge retention to active potential regeneration, allowing the filter to maintain dust collection efficiency over extended periods through periodic mechanical stimulation.
Solution Approach 2:
The invention changes the physical state and properties of the filter material by incorporating piezoelectric fibers that convert mechanical stress into electrical potential. This parameter transformation allows the filter to regenerate its electrical properties on-demand, fundamentally altering how the filter maintains its operational characteristics over time.
2Power
If external force is applied to generate surface electrical potential, then dust collection power is enhanced, but the system complexity increases due to need for force application and control mechanisms
Solution Approach 1:
The piezoelectric fibers within the filter structure serve themselves by generating the necessary electrical potential through their own piezoelectric properties when subjected to mechanical stress. The filter material itself becomes the power generation mechanism, eliminating the need for separate power supplies or complex control systems while maintaining enhanced dust collection capability.
Solution Approach 2:
The piezoelectric fibers perform multiple functions simultaneously: they serve as structural components of the filter, charge generation elements, and potential restoration mechanisms. This multi-functionality reduces overall system complexity by combining what would traditionally require separate components into a single integrated material system.
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 yarn maintains or restores the electrical potential for an arbitrary period, enhancing dust collection efficiency by generating a controlled surface electrical potential.
Implementation Method 1
a yarn containing an electric field-forming filament, wherein a positive or negative surface electrical potential is generated by applying an external force to the yarn in an axial direction of the yarn
Data Source
AI summary
A yarn containing a potential-generating filament. The yarn is constructed such that a positive or negative surface electrical potential is generated by applying an external force to the yarn in an axial direction of the yarn, and constructed such that a controlled surface electrical potential is generated by a maintenance or release of the external force.