HVAC Vent Air Quality Sampler with Sticky Substrate
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Solution Overview
Problem
Existing air quality testing devices for HVAC systems are inadequate in capturing airborne pollutants as they either test air entering the system, settle-out pollutants, or require complex setups, lacking ease of use and accuracy for homeowners.
Innovation Solution
An air quality test unit with substrate panels having a sticky surface, attachable to HVAC vents via clips, captures airborne substances by positioning at an optimal angle to maximize particulate collection, and securely closes to protect samples during transport to a laboratory for analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flat sampler patch is attached to the air filter of the HVAC duct system, then the air entering the HVAC unit can be tested, but the air exiting the HVAC unit cannot be specifically tested
Solution Approach 1:
The device is divided into separate components: substrate panels with sticky surfaces for particle capture, clips for attachment, and a removable cover. This segmentation allows the same device to be attached to different vent locations (supply or return) to achieve both testing locations while maintaining measurement accuracy through the standardized sticky surface collection method
2Quantity of substance
If swabbing a surface is used to test for mold and fungal elements, then settled-out pollutants can be detected, but airborne substances cannot be captured
Solution Approach 1:
A sticky surface acts as an intermediary between the airborne substances and the collection mechanism. This sticky surface intercepts and captures airborne particles as they pass through the vent, enabling direct collection of airborne pollutants rather than relying on settled-out particles, thus improving airborne pollutant detection accuracy while still allowing for comprehensive pollutant detection
3Measurement precision
If a fan is used to draw particles onto a collection surface, then airborne particulate can be captured, but the device complexity increases
Solution Approach 1:
The HVAC system's existing air flow serves the dual purpose of its normal function and as the driving force for particle collection. The natural air flow through the vent draws particles onto the sticky surface without requiring an external fan, thereby maintaining particulate collection efficiency while minimizing device complexity by eliminating the need for additional power sources or moving parts
4Reliability
If pins are used to attach the sampler patch to the vent, then the device can be secured, but the ease of installation and removal is reduced
Solution Approach 1:
The attachment mechanism transitions from a static pinned connection to a dynamic clip-based system that can be quickly opened and closed. The clips engage with the vent structure to provide secure attachment during testing, while allowing rapid installation and removal by simply opening the clips, thus improving ease of operation while maintaining attachment security through the clip engagement design
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 provides a simple, accurate, and reliable method for capturing and analyzing airborne pollutants from HVAC systems, ensuring representative samples are obtained and maintained for laboratory testing, addressing the limitations of existing technologies.
Implementation Method 1
at least one of the substrate panels has a side covered with a sticky substance, thereby forming a sticky surface... the sticky surface captures airborne substances in air flow passing over the sticky surface
Data Source
AI summary
An air quality test unit for attachment to a vent of a HVAC system with air flow there through. The air quality test unit is a closeable collection container is used with only one substrate panel. The substrate panel with the collection container has one or more ball and socket pivot hinges coupling the substrate panel to the clip. The air quality test unit is attachable to the vent by the clip. The collection container of the substrate panels capture airborne substances and contaminants emanating from the air flow of the HVAC system vent and is then closed with a detachable cover. A culture growth medium may be disposed in the collection container. The air quality test unit kit provides a user with an air quality test unit and process for shipping the unit to the laboratory for analysis.