Electrostatic Air Filtration Assembly for Broad Pollutant Removal
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Solution Overview
Problem
Existing air filtering systems are ineffective in removing a wide range of pollutants, including particulates of varying sizes, micro-organisms, and toxic gases, while also failing to rebalance negative ions, often requiring complex and costly infrastructure that is impractical for widespread use.
Innovation Solution
A filtering assembly and method that uses a conductive grille and filament at a negative electric potential to emit electrons that pair with pollutants, an accumulation plate for collection, and an ion emission source to restore electric charge, effectively removing pollutants of different sizes and types, including toxic gases, while rebalancing negative ions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If selective action filters are used for specific categories of pollutants, then filtering effectiveness for those specific pollutants is improved, but filtering effectiveness against other types of pollutants deteriorates
Solution Approach 1:
The patent employs multiple filtering mechanisms within a single assembly: mechanical filtration for particles, electrostatic precipitation for charged particles, and carbon filters for gases. This multi-functional approach allows the system to handle diverse pollutant types (particulates of various sizes, micro-organisms, toxic gases) simultaneously, resolving the contradiction between specialized effectiveness and broad coverage
2Reliability
If complex filtering infrastructures are implemented to remove all pollutant types, then comprehensive filtering effectiveness is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent integrates multiple filtering functions into a single compact assembly: a pre-filter for large particles, an electrostatic precipitation chamber with charged wires for fine particles and micro-organisms, and carbon filters for toxic gases. This merging of functions into one unit maintains comprehensive filtering effectiveness while significantly reducing installation complexity compared to separate systems
Solution Approach 2:
The filtering assembly uses a nested structure where the electrostatic precipitation chamber is positioned within the duct, with charged wires nested within the chamber and accumulation plates arranged concentrically. This nested arrangement maximizes filtering capacity within a compact space, reducing overall system complexity
3Reliability
If conventional filters are used for particulate removal, then particle filtration is improved, but effectiveness against ultra-fine particles and micro-organisms deteriorates
Solution Approach 1:
The patent replaces purely mechanical filtration with an electrostatic precipitation mechanism for fine particles and micro-organisms. Charged wires generate an electric field that attracts and captures charged particles, providing effective filtration for ultra-fine particles (10-50 μm) and micro-organisms that are too small for conventional mechanical filters to capture efficiently
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 a high efficacy in removing pollutants, with over 90% bacterial load reduction and significant reduction of toxic gases and ultra-fine particulates, ensuring clean air and maintaining negative ion balance without complex infrastructure or frequent maintenance.
Implementation Method 1
at least one conductive grille, having at least one hole that faces and that is proximate to at least one conductive filament, said at least one grille and said at least one filament being kept at a negative electrical potential, for the emission of electrons
Implementation Method 2
downstream of said grille there being at least one accumulation plate, which is kept at a positive electric potential, for the stable collection of pollutants paired with the electrons
Implementation Method 3
at least one source of emission of ions, for the restoration of the electric charge of the gaseous fluid, flowing over said source
Data Source
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AI summary
This invention relates to a filtering assembly for air and gaseous fluids in general, which comprises a duct (2), which can be crossed by a gaseous fluid carrying pollutants of various types. The filtering assembly comprises: at least one filtering station to remove pollutants of the type of toxic gases and solid particles of dimensions preferably greater than 50 µm; at least one conductive grille (4), having at least one hole (5) which faces and is proximate to at least one conductive filament (6), this grille (4) and this filament (6) being kept at a negative electric potential for the emission of electrons, which can be paired with pollutants of the solid particles and micro-organisms type of dimensions preferably comprised between 10 nm and 50 µm, in addition, downstream of the grille (4) is placed at least one accumulation plate (7), being kept at a positive electrical potential for the stable collection of pollutants paired with the electrons at least one emission source of ions (A), for the restoration of the electric charge of the gaseous fluid, flowing over the source.