Optical Sensor Detection for Refrigeration System Refrigerant Levels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing refrigeration systems lack efficient methods for optically detecting abnormalities such as refrigerant levels and lubricant conditions, which can lead to system inefficiencies and potential failures.
Innovation Solution
The implementation of an optical sensor system with a control module that uses light reflectivity signals to generate frequency distributions, probabilities, and weight ratios, allowing for accurate determination of refrigerant and lubricant levels, and detection of compressor flooding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional sight glass observation methods are used, then system simplicity is maintained, but measurement precision and detection accuracy deteriorate
Solution Approach 1:
The patent replaces manual visual observation of the sight glass with an automated optical sensor system. The optical sensor detects light reflectivity changes caused by refrigerant flow patterns, converting optical signals into electrical signals for automated analysis. This substitution of mechanical/visual inspection with optical-electrical detection significantly improves measurement precision while the signal processing algorithms manage the added system complexity.
Solution Approach 2:
The patent introduces an intermediary optical sensor system between the refrigerant and the detection mechanism. Instead of direct visual observation, the optical sensor acts as an intermediary that detects light reflectivity changes and converts them into analyzable electrical signals. This intermediary enables precise, automated detection of refrigerant levels and flow conditions that cannot be reliably assessed through simple visual inspection.
2Productivity
If manual observation methods are used, then device complexity is low, but productivity and real-time monitoring capability deteriorate
Solution Approach 1:
The optical sensor control module automatically processes signals without requiring manual intervention. The system self-services by continuously monitoring light reflectivity, performing Fast Fourier Transforms to analyze flow patterns, and generating diagnostic information about refrigerant levels and compressor conditions. This automated self-service capability enables real-time monitoring and improves productivity while the modular design manages complexity.
Solution Approach 2:
The system implements continuous feedback through the optical sensor that monitors refrigerant flow patterns and provides real-time information about system conditions. The control module processes this feedback continuously, updating the analysis of refrigerant levels and compressor health in real-time. This feedback mechanism enables proactive detection of abnormalities and improves system productivity through continuous monitoring.
3Reliability
If simple visual inspection is used, then ease of operation is maintained, but reliability and abnormality detection capability deteriorate
Solution Approach 1:
The patent replaces subjective visual inspection with objective optical-electrical detection. The optical sensor provides consistent, repeatable measurements of light reflectivity that are not subject to human error or variability. This substitution improves reliability by providing accurate, objective data about refrigerant levels and flow patterns, while the automated nature of the system maintains ease of operation through minimal intervention requirements.
Solution Approach 2:
The system creates an electrical copy of the visual information from the sight glass. Instead of directly observing the refrigerant flow, the optical sensor captures optical information and converts it into electrical signals that represent the same information in a form suitable for automated analysis. This copying process enables reliable detection of abnormalities while maintaining ease of operation through automated signal processing.
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
This solution enables real-time monitoring and alerting of refrigerant and lubricant conditions, preventing inefficiencies and failures by ensuring optimal system operation.
Implementation Method 1
an optical sensor configured to generate signals based on a light reflectivity associated with a liquid of the refrigeration system
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
Systems and methods are provided and include an optical sensor configured to be disposed on a sight glass. The optical sensor is configured to generate signals based on a light reflectivity associated with a liquid of the refrigeration system. An optical sensor control module that includes a processor that is configured to execute instructions stored in a nontransitory memory, and the instructions include (i) generating a set of data based on the signals, and (ii) determining an amount of liquid of the refrigeration system based on the set of data.