HVAC Vent Air Quality Sampler with V-Shape Sticky Panels
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Solution Overview
Problem
Current air quality testing methods for HVAC systems are inadequate as they either fail to capture airborne pollutants effectively or require complex setups, and there is a need for a user-friendly, accurate, and reliable method to assess indoor air quality by capturing representative samples of airborne substances emanating from HVAC systems.
Innovation Solution
An air quality test unit comprising two substrate panels with a sticky surface, attachable to HVAC vents using clips and a hinge, which captures airborne substances by positioning the panels at an acute angle to maximize particulate collection, and can be closed to protect the 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 two separate sampler patches (first and second patches) that can be attached to different locations - one for testing air entering the HVAC unit and another for testing air exiting the unit. This segmentation allows versatile testing at multiple locations while maintaining measurement precision at each specific location.
Solution Approach 2:
The invention transitions from a single-point sampling approach to a multi-location sampling approach by adding spatial dimensionality. The sampler assembly can be positioned at different HVAC locations (intake and exhaust), enabling comprehensive air quality assessment across the entire HVAC system rather than at a single fixed point.
2Measurement precision
If a fan is used to draw particles onto a collection surface, then airborne particles can be captured, but the device complexity increases
Solution Approach 1:
The invention extracts and removes the fan component from the sampling system, replacing active mechanical particle collection with passive adhesive collection. The sampler patches use sticky surfaces to capture particles directly from the air flow without requiring a fan to draw particles onto the collection surface, thereby simplifying the device while maintaining capture effectiveness.
Solution Approach 2:
The sampler patches perform self-service by using their adhesive surfaces to automatically capture airborne particles as air naturally flows over them through the HVAC system. This eliminates the need for external power sources, motors, or fans, allowing the device to function passively and simplifying the overall system complexity.
3Productivity
If the substrate panels are positioned normal to the vent air flow, then the air flow is interrupted, but the particulate collection efficiency decreases
Solution Approach 1:
The sampler patches are positioned asymmetrically at an acute angle relative to the air flow direction rather than perpendicular to it. This asymmetric positioning allows the patches to intercept and capture particles effectively as air flows diagonally across them, maintaining both air flow interruption and high particulate collection efficiency simultaneously.
Solution Approach 2:
The invention employs a V-shaped configuration where the two substrate panels are angled toward each other, creating a curved or angled surface arrangement that optimizes particle interception. This angular geometry allows air flow to be redirected along the panels, increasing the effective collection area and improving particulate capture efficiency compared to flat perpendicular positioning.
4Measurement precision
If the sticky surface is exposed during use, then airborne substances can be captured, but the sample is vulnerable during transport to the laboratory
Solution Approach 1:
The device is segmented into multiple components including removable sampler patches that can be detached from the main housing. This allows the patches to be exposed to air flow for particle capture during use, then safely removed and protected during transport to the laboratory, separating the sampling function from the protection function.
Solution Approach 2:
The sampler patches utilize thin flexible adhesive surfaces that can conform to the HVAC vent surfaces and are easily removable. These thin film structures allow the sticky surface to be exposed during sampling while being compact and protectable during transport, providing both capture effectiveness and sample security.
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 captures and retains airborne pollutants, providing a representative sample for laboratory analysis, ensuring accurate air quality assessment and easy use by homeowners, while protecting the samples during shipment.
Implementation Method 1
A hinge couples the substrate panels about which the substrate panels rotate
Implementation Method 2
at least one substrate panel having a corresponding side with a 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 contains at least two substrate panels arranged in a v-shape form wherein at least one panel includes a sticky surface or a collection container. The air quality test unit is attachable to the vent by one or more clips. The sticky surfaces or collection container of the substrate panels capture airborne substances and contaminants emanating from the air flow of the HVAC system vent. A culture growth medium may be disposed in the collection container or on the sticky surface. 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.