Oil balancing and returning air conditioning unit and control method thereof
An air-conditioning unit, oil return control technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of uneven oil distribution, achieve uniform oil distribution, solve oil distribution, and solve oil level imbalance Effect
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[0095] 1. Compressor rotation control
[0096] 1) The opening capacity of the internal unit is small, and the unit always operates with a single compressor;
[0097] After the unit starts normally, the first compressor 101 starts first. When the running time of the unit is equal to t1, the frequency of the first compressor 101 is reduced, and the second compressor 102 is started. When the continuous running time of the unit reaches t1+t2, the first The compressor 101 stops, and the second compressor 102 continues to run, which is recorded as the first period, and the time t is reset to zero. When the running time of the unit reaches t1 again, the frequency of the second compressor 102 is reduced, and the first compressor 101 is started. When the continuous running time of the unit reaches t1+t2, the No. 2 compressor stops and the No. 1 compressor continues to run; for the second cycle. And so on and on.
[0098] 2) The opening capacity of the internal unit is relatively lar...
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