Fuzzy diagnosis method for air conditioner refigerator failure
A fault diagnosis, air conditioning and refrigeration technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as unreported air conditioning and refrigeration systems, and achieve the effect of reducing false alarm rate, sensitivity and false alarm rate.
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[0018] The technical scheme of the present invention will be further described below in conjunction with a specific embodiment
[0019] For the refrigerating machine system for air conditioners with a cooling capacity of 650kW, the fuzzy fault diagnosis is roughly as follows:
[0020] 1. Arrange six sensors for condensing temperature, evaporating temperature, compressor inlet temperature, compressor outlet temperature, air-conditioning room temperature, and cooling water temperature on the refrigerator, and send the collected 6 signal changes to the PC through the data acquisition system. It is assumed that there are seven types of failures in the refrigeration system. The 7 causes of failure are: too little refrigerant; blockage of refrigeration system pipes; fan stop in evaporation chamber; leakage of compressor inlet and exhaust valves; too small cooling water flow of condenser; expansion valve not opened or blocked; system oil return bad.
[0021] 2. The system first con...
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