HVAC system air filter
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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, and they are often discarded prematurely, contributing to environmental waste.
Innovation Solution
A reusable HVAC system air filter with a supportive frame and a filter medium comprising cotton gauze treated with a filter oil composition and an electrostatic portion that attracts and agglomerates contaminants, using positively charged fibers and antimicrobial molecules to capture particles as small as 0.001 microns, while allowing fragrance release downstream to avoid aromatic molecule destruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional air filters are used to remove particle contaminants, then filtration is achieved, but airflow is restricted and energy consumption increases
Solution Approach 1:
The filter is divided into multiple functional layers: a reusable frame structure, a washable filter medium for particle capture, and an electrostatic portion for molecular contaminant removal. Each layer performs a specific function, allowing the system to maintain filtration effectiveness while reducing overall airflow resistance compared to conventional single-layer filters.
Solution Approach 2:
The patent changes the physical and chemical parameters of the filter medium by treating cotton gauze with filter oil composition, which modifies surface properties to enhance particle capture efficiency. The electrostatic portion uses charged fibers to attract airborne molecular contaminants, changing the filtration mechanism from purely mechanical to electrostatic-physical combination, thereby improving contaminant removal without proportionally increasing airflow resistance.
2Object-affected harmful factors
If highly effective air filters are used to remove airborne molecular contaminants and VOCs, then filtration effectiveness improves, but airflow restriction increases
Solution Approach 1:
The filter combines cotton gauze material with filter oil composition treatment and electrostatically charged fibers to create a composite filtering system. The cotton gauze provides structural support and mechanical filtration, while the electrostatic portion with charged molecules captures airborne molecular contaminants and VOCs. This composite approach achieves molecular-level filtration without the extreme airflow restriction of conventional high-efficiency filters.
3Productivity
If conventional air filters are discarded when dirty or clogged, then airflow is restored, but environmental waste increases
Solution Approach 1:
The filter medium and electrostatic portion are designed to be removable and washable, allowing contaminants to be recovered through cleaning rather than discarding the entire filter. The frame structure is permanently reusable, and the filter components can be restored to functional condition multiple times, dramatically reducing material waste compared to conventional disposable filters.
Solution Approach 2:
The filter enables users to perform maintenance themselves through simple washing procedures. The design allows easy removal of the filter medium from the frame, cleaning with water or appropriate solutions, and reinstallation, making the filter self-maintainable without requiring professional service or replacement.
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 enables effective filtration of airborne molecular contaminants and VOCs without obstructing airflow, allowing for periodic cleaning and reuse of the filter, thereby reducing energy consumption and environmental impact by minimizing filter replacement.
Implementation Method 1
The electrostatic portion is configured to electrostatically attract and agglomerate airborne molecular contaminants and volatile organic compounds (VOCs) within air flowing through the building ventilation system
Implementation Method 2
a positively charged central screen and one or more layers of polarizable fibers entrap particle contaminants within the layers of polarizable fibers
Implementation Method 3
at least some fibers that are treated with a coating of positively charged molecules configured to electrostatically capture and destroy negatively charged microbes and volatile organic compounds as small as 0.001 microns in diameter
Data Source
AI summary
An apparatus and a method are provided for a heating, ventilation, and air conditioning (HVAC) system air filter for a building ventilation system. The HVAC system air filter comprises a supportive frame configured to orient the HVAC system air filter within the building ventilation system. A composite filter medium retained within the supportive frame comprises a cotton gauze portion and an electrostatic portion. The cotton gauze portion is configured for treatment with a filter oil composition to enhance airflow and filtration of air flowing through the composite filter medium. The electrostatic portion is configured to electrostatically attract and agglomerate airborne molecular contaminants and volatile organic compounds (VOCs) as small as 0.001 microns in diameter. In some embodiments, the composite filter medium comprises substances configured to release a fragrance into air passing through the composite filter medium.