Method for detecting blockage of air conditioning system
An air-conditioning system and detection method technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve the problems of inability to identify system blockage, complex control methods, sensor failures, etc., to facilitate fault diagnosis and The effect of after-sales maintenance service efficiency, improving intelligence, and avoiding reliability problems
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[0013] The invention proposes a detection method for air conditioning system blockage, which does not rely on the temperature of the evaporator or condenser coil, calculates the winding temperature of the compressor in real time and obtains the frequency of the current compressor, and at the same time, according to the change of the opening degree of the expansion valve and the ambient temperature In this case, by calculating the change rate of the compressor winding temperature, it is judged whether the change rate is within the preset threshold range. If it is, the system is blocked and a fault is reported. If not, the system is normal, so that the air conditioning system blockage can be effectively controlled. timely judgment.
[0014] Concrete implementation of the present invention is as follows:
[0015] First, collect and store the ambient temperature Tori outside the outdoor unit, the opening degree Vi of the electronic expansion valve, the frequency Fi of the compress...
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