Light-Based Duct Leak Detection Without Disassembly or Sensors
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Solution Overview
Problem
Detecting leaks in HVAC/R systems and other closed loop systems is challenging due to the difficulty in locating leaks without disassembling the system and the need for expensive and complex equipment.
Innovation Solution
A leak detection system comprising a handle, a securing means, a light source, and a reflector that can be secured to the duct system using magnets or gaskets, allowing the light to shine inside the duct and reflect outward to indicate leaks, which can be used with various light sources and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual methods (smoke or vaporized dye) are used to detect leaks, then leak location can be identified, but the system requires significant pressure differential and technician access to suspected areas
Solution Approach 1:
The patent introduces light as an intermediary substance to detect leaks. Instead of using smoke or dye that require pressure differentials, the system uses photons that can penetrate through duct walls. The light source is positioned outside the duct and leaks are detected by observing light transmission through suspected leak areas, eliminating the need for technician access to interior duct surfaces.
2Measurement precision
If sensors detecting compound concentration changes are used, then leak detection can be achieved, but expensive equipment and complicated installation are required
Solution Approach 1:
The patent replaces expensive sensor equipment with inexpensive light sources and detectors. Instead of using costly compound concentration sensors, the system uses affordable LED or laser light sources combined with simple photodetectors or even visual observation methods. This dramatically reduces equipment cost and installation complexity while maintaining effective leak detection capability.
3Measurement precision
If the duct system is disassembled to locate leaks, then accurate leak identification is possible, but time and system disruption increase
Solution Approach 1:
The patent enables preliminary leak detection by positioning light sources outside the duct system and observing light transmission through duct walls. This allows technicians to identify leak locations before any disassembly occurs. The light can penetrate through thin-walled duct sections to reveal gaps or holes, enabling accurate leak mapping while the system remains intact and operational.
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
Provides a simple, cost-effective method to detect leaks in HVAC/R systems and other closed loop systems, allowing for efficient identification and location of leaks without the need for extensive disassembly or expensive equipment.
Implementation Method 1
a light source configured to reflect light at a desired angle
Data Source
AI summary
Systems and methodologies are disclosed to detect a leak in a duct system or other closed loop system. The system and methodologies use a light source to detect a leak in a duct system, e.g., the ductwork of a HVAC/R system.