Refrigerant stagnation detection method and device, electronic device, and storage medium
By obtaining the difference between the suction pressure state and the temperature equalization time constant in the air conditioning system for diagnosis, the problem of poor accuracy in refrigerant retention detection is solved, achieving highly accurate and forward-looking refrigerant retention state detection and reducing the false judgment rate.
Patent Information
- Application Number
- CN202610584603.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for detecting refrigerant retention have poor accuracy, especially in heat pump systems where mode switching or extreme operating conditions are difficult to diagnose accurately, leading to decreased system performance and compressor damage.
By acquiring the suction pressure status value and temperature equalization time constant after the air conditioning system compressor starts, the difference is calculated to determine the refrigerant retention state. The suction pressure rise slope and temperature equalization time constant are combined for dual-parameter fusion diagnosis to reduce the impact of environmental interference and single sensor error.
It achieves highly accurate and forward-looking detection of refrigerant retention status, provides early warning of risks, and improves the accuracy of detection and preventive control capabilities.
Smart Images
Figure CN122408175A_ABST