Multi-Layer HVAC Air Filter for VOC Removal with Low Pressure Drop
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Solution Overview
Problem
Conventional HVAC system air filters are ineffective in removing airborne molecular contaminants and volatile organic compounds (VOCs) without restricting airflow, leading to increased energy consumption and unnecessary replacement, resulting in significant waste.
Innovation Solution
A reusable HVAC air filter with a supportive frame and a filter medium comprising multiple layers of unique filtration properties, including electrostatic and antimicrobial components, is designed to remove airborne molecular contaminants and VOCs while maintaining low air pressure drop and high filtration efficiency, allowing for periodic cleaning and reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional air filters use highly effective filtration materials to remove very small contaminants, then filtration efficiency is improved, but airflow restriction increases and energy consumption increases
Solution Approach 1:
The air filter is divided into multiple functional layers including a pre-filter layer for larger particles, an electrostatic collection layer for fine particles, and a post-filter layer for additional filtration. This segmentation allows each layer to perform specific filtration functions with optimized airflow characteristics, achieving high filtration efficiency without excessive airflow restriction that would increase energy consumption
Solution Approach 2:
The patent replaces purely mechanical filtration with an electrostatic collection mechanism. The electrostatic layer uses electrical charges to attract and capture charged particles, providing high filtration efficiency for very small contaminants without the dense material structure that would restrict airflow and increase energy consumption in conventional mechanical filters
2Reliability
If conventional air filters are designed for high filtration efficiency, then contaminant removal is improved, but airflow restriction increases making HVAC system work harder
Solution Approach 1:
The filter is segmented into multiple layers with progressively finer filtration capabilities. The pre-filter layer captures larger particles with minimal airflow resistance, the electrostatic layer captures fine particles through electrical attraction rather than mechanical blocking, and the post-filter provides additional filtration. This segmentation maintains high airflow productivity while achieving high filtration efficiency
Solution Approach 2:
The patent employs porous materials with optimized pore structures that allow high airflow through the filter medium. The electrostatic collection layer uses a porous substrate that provides large surface area for charge deposition while maintaining open pore structure for efficient airflow, preventing the dense structure that would restrict airflow and reduce productivity
3Productivity
If conventional air filters are frequently replaced to maintain airflow, then HVAC system performance is maintained, but waste generation increases
Solution Approach 1:
The patent designs the air filter to be reusable rather than disposable. The frame structure is durable and the filter media can be removed, cleaned, and reinstalled multiple times. This recovering approach eliminates the need to discard functional filter components, significantly reducing waste generation while maintaining airflow productivity through periodic cleaning and maintenance
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 effectively removes airborne molecular contaminants and VOCs with high efficiency and low air pressure drop, reducing energy consumption and waste by allowing the filter to be periodically cleaned and reused, thus extending its service life and minimizing landfill contributions.
Implementation Method 1
A filter medium is retained within the supportive frame and is configured to remove the airborne molecular contaminants and VOCs from air flowing through the residential HVAC system
Implementation Method 2
a filter medium comprising multiple layers of unique filtration properties, including electrostatic and antimicrobial components
Implementation Method 3
including electrostatic and antimicrobial components
Implementation Method 4
including electrostatic and antimicrobial components
Data Source
AI summary
An apparatus and a method are provided for a heating, ventilation, and air conditioning (HVAC) home air filter to remove airborne molecular contaminants and volatile organic compounds (VOCs) from air within residential spaces. The HVAC home air filter includes a supportive frame having a shape and size suitable to orient the HVAC home air filter within a residential HVAC system. A filter medium is retained within the supportive frame to remove the airborne molecular contaminants and VOCs from air flowing through the residential HVAC system. The filter medium includes a combination of media layers configured to exhibit a relatively high filtration efficiency and a low air pressure drop across the filter medium. The supportive frame includes a plurality of elongate sections and corner sections disposed along perimeter edges of the filter medium to support the filter medium within the residential HVAC system so as direct air through the filter medium.