Modular Electrostatic Air Filtration with Pre-Filter Segmentation
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Solution Overview
Problem
Conventional air filtration systems face challenges in capturing small particles and live organisms without increasing energy use or ozone emission, and they often require complex replacement procedures and more powerful pumps, leading to higher operational costs and health risks.
Innovation Solution
The electrically enhanced filtration system uses a high energy field to aggregate and capture ultrafine particles, combined with pre-filters and a modular design that allows for easy replacement and reduced pressure drop, utilizing a controlled high energy field and pre-filters to maintain high air cleaning performance while minimizing energy use and ozone emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the hole size of a filter decreases to improve particle capture capability, then the filtering capability is improved, but the resistance to airflow increases requiring more powerful pumps
Solution Approach 1:
The filter is divided into multiple layers with different pore sizes and functions. The front layer has larger pores for pre-filtration, while subsequent layers have progressively smaller pores for capturing finer particles. This segmentation allows each layer to perform its specific function efficiently without creating excessive resistance throughout the entire filter.
Solution Approach 2:
The patent transitions from a single-layer filtration approach to a multi-layered filtration system, adding the dimension of depth and layering. This allows particles to be captured at different stages of their trajectory through the filter, improving overall capture efficiency without requiring uniformly small pores throughout.
2Manufacturing precision
If conventional filters are used to capture small particles, then particle capture is achieved, but ionizing air purifiers generate ozone that causes health effects
Solution Approach 1:
The patent converts the harmful ozone generation mechanism into a beneficial non-ozone-producing filtration system. By using electrostatic charging plates that create an electric field to attract and capture particles, the system achieves effective particle removal without generating harmful ozone byproducts.
Solution Approach 2:
The patent replaces the mechanical/chemical ionization process that generates ozone with an electrostatic field-based particle capture mechanism. This substitution maintains particle capture effectiveness while eliminating the harmful ozone emission side effect.
3Manufacturing precision
If conventional air filters are designed with dense filtration media, then filtering capability is improved, but pumps require larger electrical power to maintain airflow rate
Solution Approach 1:
The filter media is segmented into multiple layers with progressively finer pore sizes. The front layers handle larger particles with larger pores, reducing resistance, while deeper layers capture smaller particles. This segmentation distributes the filtration workload across layers, maintaining high capture capability without requiring uniformly dense media that would increase resistance and pump power requirements.
4Strength
If filters are made difficult to replace using conventional mounting methods, then structural integrity is maintained, but tools are required for replacement leading to potential loss of parts
Solution Approach 1:
The filter assembly is segmented into modular components that can be independently accessed and replaced. The filter element is designed as a separate, self-contained module that can be removed and replaced without disassembling the housing or using tools, while maintaining structural integrity through designed connection interfaces.
Solution Approach 2:
Instead of requiring tools to secure the filter firmly, the design inverts the approach by using simple snap-fit or friction-based connections that are inherently secure during operation but easily released by pulling. This inversion makes the filter both structurally sound during use and trivially replaceable without tools.
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
This system achieves ultraclean filtration with 99.99% efficiency at 0.007-micron filtration, reduces maintenance and energy costs, and allows for continuous operation without requiring tool-based filter replacements, effectively capturing small particles and preventing organism growth while minimizing pressure drop and energy consumption.
Implementation Method 1
The electrically enhanced filtration system uses a high energy field to aggregate and capture ultrafine particles
Implementation Method 2
The air passes through the pre-filter and to the first filtering sub-assembly
Data Source
AI summary
The present invention is disinfecting air filtration apparatus that allows multiple disinfecting air filtration modules to function in parallel. The apparatus may provide energy to respective parts of a filtration apparatus, such as a V-Bank filter apparatus. The apparatus may also include a front-mounted pre-filter frame that can be secured to other parts of the apparatus without tools. The securing of the pre-filter frame grounds the air filtration module and creates an airtight interface between the air filtration module and the array. Methods consistent with the present disclosure allow for filter apparatus to be connected to or coupled to virtually any size air ducts of an air distribution or a high voltage alternating current air conditioning (HVAC) system.