Compressor return air dryness measurement method, apparatus, device, and storage medium
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Solution Overview
Problem
Existing technologies face challenges in accurately measuring the return gas dryness of a compressor, which can lead to compressor refrigerant oil dilution and abnormal wear if not properly managed.
Innovation Solution
A method and apparatus for detecting compressor return gas dryness by obtaining and analyzing exhaust gas pressure, return gas pressure, working frequency, and exhaust gas temperature to calculate the return gas dryness using saturation temperature differences and enthalpy values, enabling accurate detection and adjustment strategies to maintain optimal dryness levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional methods (temperature, humidity sensors or dew point calculators) are used to measure return air dryness, then the measurement process is simple, but the measurement precision is insufficient and cannot meet the requirements of precise control in cold chain logistics
Solution Approach 1:
The patent introduces a dew point sensor as an intermediary measurement device that indirectly measures return air dryness by detecting the dew point temperature. This intermediary approach enables precise dryness measurement without requiring direct complex measurements of multiple parameters, thus resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The patent changes the measurement parameter from direct dryness measurement to dew point temperature measurement. By measuring the dew point temperature and using it to determine dryness level, the system achieves high precision measurement while keeping the device relatively simple, as dew point sensors are well-established technology
2Reliability
If precise return air dryness measurement is implemented using the patent method, then the control precision of the refrigeration system is improved, but the device complexity increases due to additional sensors and control logic
Solution Approach 1:
The patent implements a feedback control mechanism where the dew point sensor continuously monitors return air dryness and sends signals to the controller, which adjusts the refrigeration system accordingly. This feedback loop improves control reliability by ensuring the system responds to actual dryness conditions, while the automated feedback process minimizes the need for complex manual control logic
Solution Approach 2:
The control system automatically adjusts refrigeration parameters based on dew point sensor readings without requiring complex external intervention. The system serves itself by using the measured dew point information to autonomously optimize refrigeration operation, improving reliability while keeping the control architecture relatively simple
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
Accurate calculation of return gas dryness improves compressor reliability by preventing refrigerant oil dilution and abnormal wear, ensuring efficient operation.
Implementation Method 1
step S1: The dew point sensor measures the dew point temperature of the return air
Data Source
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AI summary
In the technical field of air conditioning, a compressor return air dryness detection method, apparatus, and device, and a storage medium are provided. The method includes: obtaining an exhaust air pressure, a return air pressure, a working frequency, an exhaust air temperature, and a return air temperature of a compressor; determining a return air saturation temperature corresponding to the return air pressure; calculating a temperature difference value based on the return air temperature and the return air saturation temperature; and calculating, in response to the temperature difference value being smaller than a predetermined threshold value, a return air dryness of the compressor based on the exhaust air pressure, the return air pressure, the working frequency, and the exhaust air temperature.