Pleated Air Filter Coil Integration for Higher Particle Separation
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Solution Overview
Problem
Existing air filtration systems with pleated filter media face challenges in maintaining high filtration capacity and particle separation over time, particularly in vehicle cabins, where the filtration capacity and separation efficiency decline.
Innovation Solution
Integration of a coil arrangement within the filter element, allowing for inductive energy transfer and increased electrostatic charging, which enhances particle separation by inducing a voltage on the filter surface, either on the bellows or edge strips, using conductive materials or geometries like concentric lines, lattice-like, or serpentine shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a coil arrangement is integrated into the filter element, then the degree of particle separation is increased by electromagnetic induction, but the device complexity increases
Solution Approach 1:
The coil arrangement is integrated directly into the filter element structure, merging the filtration function with the electromagnetic induction function in a single component. This reduces the number of separate parts and simplifies the overall device while maintaining the particle separation enhancement through electromagnetic induction.
Solution Approach 2:
The filter element serves multiple functions: it performs traditional particle filtration through the pleated filter medium while simultaneously acting as an electromagnetic induction device through the integrated coil arrangement. This multi-functionality increases particle separation capability without requiring a completely separate system.
2Ease of manufacture
If the coil arrangement is integrated into the filter element, then manufacturing is simplified, but the filter element structure becomes more complex
Solution Approach 1:
The coil arrangement is manufactured as an integrated part of the filter element structure, combining what would traditionally be separate manufacturing steps into a unified process. This integration simplifies the overall manufacturing workflow while the internal structure of the filter element incorporates the coil geometry.
3Device complexity
If traditional filter media are used, then the structure is simple, but the filtration capacity and degree of separation decrease over time
Solution Approach 1:
The patent changes the physical state of the filter medium by applying electromagnetic induction through the integrated coil arrangement. This generates electrostatic charges on the filter surface, fundamentally altering the interaction between the filter media and particles, thereby maintaining high separation efficiency over time without changing the basic filter structure.
Solution Approach 2:
The patent replaces purely mechanical filtration with a combination of mechanical filtration and electromagnetic induction. The coil arrangement generates electromagnetic fields that create electrostatic forces, substituting some of the mechanical filtration function with electromagnetic action to maintain performance over time.
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 significantly increases the degree of particle separation by at least 20% to 30% compared to traditional systems, ensuring cleaner air is maintained in vehicle cabins for a longer period without complex coil attachment.
Implementation Method 1
a coil arrangement is integrated into the filter element... allowing for inductive energy transfer and increased electrostatic charging, which enhances particle separation by inducing a voltage on the filter surface
Data Source
AI summary
A filter for filtering an air flow, including a filter element with a bellows made of a pleated filter medium, wherein a coil arrangement is integrated into the filter element. A surface of the filter element is provided with the coil arrangement for inducing an electrical voltage. The surface having the coil arrangement is a surface of the bellows on an untreated gas side.