Electrostatic Precipitator With Warp-Knitted Spacer Reducing Pressure Loss
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Solution Overview
Problem
Existing air and aerosol purifiers face challenges with high manufacturing and operating costs, significant pressure loss, frequent filter replacement, and environmental impact due to fibrous filter media, while electrostatic precipitators have limitations in manufacturing cost, assembly complexity, and ozone creation.
Innovation Solution
An electrostatic precipitator design featuring electrically conductive strips with a warp-knitted three-dimensional spacer fabric maintains constant thickness, reducing pressure loss and electrical consumption, and allows for easy assembly and cleaning, combined with an ionizer using carbon fibers for efficient particle charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fibrous filter media are used for filtration, then filtration function is achieved, but pressure drop increases and filter replacement is required
Solution Approach 1:
The patent replaces the mechanical fibrous filter media with an electrostatic field-based collection system. Conductive strips arranged in parallel generate an electrostatic field that charges particles and directs them to collection electrodes, eliminating the need for physical filter media and associated pressure drops.
Solution Approach 2:
The patent introduces an intermediary electrostatic field between the inlet and collection electrodes. This field acts as a mediator that transfers momentum from the airflow to the particles through electrostatic forces, enabling particle collection without direct mechanical contact with filter media.
2Reliability
If fibrous filter media are used, then particles are captured, but manufacturing cost and replacement cost increase
Solution Approach 1:
The patent replaces expensive fibrous filter media with simple conductive strips that can be easily manufactured and replaced. The electrostatic collection system uses basic electrical components and conductive materials, significantly reducing both initial manufacturing costs and ongoing replacement expenses.
Solution Approach 2:
The conductive strips and collection electrodes are designed as inexpensive, easily replaceable components. Rather than requiring expensive permanent filter media, the system uses affordable electrical components that can be quickly swapped out if needed, reducing long-term operational costs.
3Reliability
If electrostatic precipitator with complex assembly is used, then particle collection is achieved, but assembly complexity increases
Solution Approach 1:
The patent divides the electrostatic collection system into discrete, modular components: parallel conductive strips as collection electrodes, separate ionization elements, and independent spacing structures. This segmentation allows each component to be manufactured and assembled independently, simplifying the overall assembly process while maintaining collection efficiency.
Solution Approach 2:
The conductive strips serve multiple functions simultaneously: they act as collection electrodes for charged particles, provide structural support for spacing, and can be integrated with ionization elements. This multi-functionality reduces the number of separate components needed, thereby simplifying assembly complexity.
4Reliability
If traditional electrostatic precipitator is used, then particle charging is achieved, but ozone creation occurs
Solution Approach 1:
The patent applies different functional qualities to different regions of the device. The conductive strips are designed with specific electrical properties and geometries that optimize particle collection while minimizing ozone generation. The ionization elements are separately positioned and controlled to charge particles without creating harmful byproducts in the collection zone.
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 high filtration efficiency with low energy consumption and reduced environmental impact, addressing the drawbacks of fibrous filter media and electrostatic precipitator complexities, while offering a cost-effective and efficient air purification system.
Implementation Method 1
The operating principle of electrostatic collection is based on the prior implementation of an electric field, in particular an intense electric field to create a corona discharge effect which will participate in the charging of the particles prior to their collection.
Implementation Method 2
The charged particles thus created then migrate towards the counter-electrode, on which they can be collected.
Data Source
Figure 1A~1E
Figure 2~3
Figure 4~5
AI summary
The invention consists of an electrostatic precipitator/collector (3) for an air purifier (1) or an aerosol purifier, comprising: - at least two electrically conductive strips (30, 31) which form collecting electrodes; and - an electrically insulating spacer element (5) that is positioned between the two collecting electrodes, said spacer element comprising a three-dimensional warp-knitted fabric.