Air Filter for Construction Projects
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Solution Overview
Problem
Construction activities produce extensive dust and debris that can damage HVAC systems if not filtered out, and existing air filters are not designed to handle construction dust effectively, especially for irregularly shaped return air duct boots.
Innovation Solution
A flexible air filtration system with a woven or pressed fiber fabric and affixed magnetic strips that can contour to irregularly shaped return air duct boots, allowing for easy installation and reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard air filters are used during construction, then they can filter some dust, but they cannot effectively trap construction dust and are not suitable for irregularly shaped return air duct boots
Solution Approach 1:
The patent uses a flexible magnetic frame with magnet strips that can conform to irregularly shaped return air duct boots. The flexible material allows the filter to adapt to various duct geometries while maintaining effective dust filtration, resolving the contradiction between filtration reliability and adaptability to different shapes.
Solution Approach 2:
The patent employs magnets and magnetic strips to create a flexible, adaptable filtering system. By changing the physical parameters of the frame (making it flexible rather than rigid), the system can effectively filter construction dust across various duct configurations, simultaneously improving both filtration reliability and shape adaptability.
2Reliability
If multiple standard air filters are used during construction, then dust filtration coverage increases, but the cost and complexity of filter replacement increases
Solution Approach 1:
The flexible magnetic filter design can be universally applied to various return air duct boot sizes and shapes using a single filter type. This eliminates the need for multiple different filter sizes and configurations, reducing device complexity while maintaining comprehensive HVAC system protection during construction.
3Productivity
If standard air filters are used, then initial filtration is provided, but they cannot be effectively cleaned and reused
Solution Approach 1:
The patent enables filter recovery and reuse by designing a filter system that can be effectively cleaned after use. The flexible magnetic construction allows for easy removal and cleaning of accumulated construction dust, transforming the filter from a disposable component to a reusable asset that maintains continuous filtration capability.
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
Effectively filters out construction dust and debris from entering HVAC systems, protecting the system's efficiency and longevity, and can be easily cleaned and reused, reducing costs and environmental impact.
Implementation Method 1
The flexible perimeter may commonly be comprised of affixed flexible magnets to take advantage of air ducts boots being made typically of a metal to which magnets adhere.
Data Source
AI summary
An air filter suitable for temporary or interim use is configured to be removeably affixed over or inside the return air duct boot of a building under construction. In one embodiment, the air filter comprises a piece of air filtration material having a resilient, shaped, stretchable perimeter and further comprising integral magnetic strips suitable to adhere the invention to a metal return air duct boot. In a preferred embodiment, one or more layers of air filtration material are affixed to a shaped frame and may further comprise a plurality of magnets and billowable fabric to retain the invention sealably in position in the return air duct boot.