V-Shaped Galley Insert Filter Monitoring With Optical Clog Detection
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Solution Overview
Problem
Conventional air filter replacement schedules in galley inserts are inaccurate due to varying operating conditions, leading to premature filter discarding and increased maintenance costs.
Innovation Solution
An air filter health monitoring system with an illuminator and illumination sensor spaced apart from the filter, capable of determining the filter's health status by illuminating and sensing the filter's condition, and a controller to analyze the data for accurate health assessment and predictive maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time-based filter replacement schedules are used, then maintenance is simplified and guaranteed, but filters are discarded prematurely and maintenance costs increase
Solution Approach 1:
The patent replaces the mechanical/time-based replacement system with an optical sensing system. Illuminators and sensors detect the actual physical condition of the filter by measuring light transmission properties, substituting chronological scheduling with real-time condition monitoring to determine when filters need replacement
Solution Approach 2:
The system implements continuous feedback by monitoring filter condition through optical sensors and providing real-time status information. The controller receives sensor data, processes it to assess filter health, and can trigger alerts or warnings to operators, creating a closed-loop system that adapts to actual filter condition rather than following a fixed schedule
2Ease of operation
If assumed filter life is used, then replacement scheduling is simple, but measurement precision of actual filter condition deteriorates
Solution Approach 1:
The patent replaces simple time-based scheduling with optical measurement systems that precisely assess filter condition. Multiple illuminators and sensors arrayed across the filter surface provide detailed spatial information about clogging patterns, transforming subjective time estimates into objective physical measurements
Solution Approach 2:
The system divides the filter into multiple monitoring zones using arrays of illuminators and sensors. Each sensing pair monitors a specific region, allowing the system to detect local variations in filter condition and provide spatially-resolved health assessment rather than a single average measurement
3Measurement precision
If multiple sensing pairs are arrayed to detect area effects, then measurement precision improves, but device complexity increases
Solution Approach 1:
The filter is divided into multiple monitoring zones with sensing pairs distributed across the surface. Each sensing pair independently monitors its local region, enabling the system to map clogging patterns spatially and assess different areas of the filter with high precision
Solution Approach 2:
Multiple sensing pairs are integrated into a unified monitoring system with a single controller that processes data from all sensors. The controller aggregates information from numerous sensing pairs to create a comprehensive view of overall filter health, merging complex local measurements into a simple overall assessment
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
Enables precise monitoring of filter health, allowing scheduled maintenance based on actual filter condition rather than time-based intervals, reducing unnecessary replacements and improving system performance and reliability.
Implementation Method 1
An illuminator is positioned on a first side of the filter and directed to illuminate the filter. An illumination sensor is positioned on a second side of the filter. The illuminator and illumination sensor can each be spaced apart from the filter.
Implementation Method 2
detect illumination from the illuminator passing through the filter with the illumination sensor on the second side of the illuminator
Data Source
AI summary
An air filter health monitoring system includes a filter spanning an air passage for filtering solids and/or liquids out of an air flow passing through the air passage. An illuminator is positioned on a first side of the filter and directed to illuminate the filter. An illumination sensor is positioned on a second side of the filter. The illuminator and illumination sensor can each be spaced apart from the filter. The filter can be installed in a galley insert and can include a reticulated filter medium folded in a v-shape over a v-shaped grid work.