Optical Duct Leak Detection Using Internal Light Reflection
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Solution Overview
Problem
Detecting leaks in HVAC/R duct 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, which can be secured to the duct system using magnets or gaskets, and includes a cone-shaped reflector to direct light inside the duct, allowing for the identification of leaks through escaped light.
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 disassembly and access to suspected leak areas
Solution Approach 1:
The patent replaces mechanical/disassembly-based leak detection methods with an optical system. A light source and reflector are used to illuminate the interior of ducts, allowing visual inspection of leaks without physical disassembly. The optical system enables technicians to see through the duct walls or openings without dismantling the HVAC system.
Solution Approach 2:
The patent introduces an optical intermediary (light and reflector system) to bridge the gap between the technician and the interior of the duct. The reflector acts as a mediator that redirects light to illuminate hard-to-reach areas inside the duct, making the interior visible without requiring direct physical access or disassembly.
2Measurement precision
If sensors detecting compound concentration changes are used, then leak detection capability is improved, but equipment cost and installation complexity increase significantly
Solution Approach 1:
The patent employs inexpensive, simple optical components (light source and reflector) instead of expensive sensor systems. These components can be easily replaced or moved between different inspection locations, eliminating the need for permanent, costly sensor installations throughout the duct system.
Solution Approach 2:
The patent extracts the essential function of leak detection from complex sensor systems and reduces it to a simple optical inspection method. By taking out only the necessary components (light source and reflector) and removing unnecessary complexity, the system achieves effective leak detection without expensive equipment or complicated installation.
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, inexpensive method to detect leaks in HVAC/R systems and other closed loop systems, enabling efficient identification and location of leaks without requiring significant disassembly or expensive equipment.
Implementation Method 1
a light source that may be configured to reflect light at a desired angle
Implementation Method 2
a magnet for securing to a metal duct system
Data Source
AI summary
Systems and methodologies are disclosed to detect a leak in a duct system or other closed loop systems. 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.