Variable frequency energy-saving control method for refrigeration system
A refrigeration system, energy-saving control technology, applied in heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve the problems of high energy consumption, difficult system operation, instability, etc., to reduce heat exchange temperature difference, reduce irreversible losses , the effect of good energy saving effect
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[0022] 1. Composition of refrigeration system
[0023] In the present invention, the control principle of a typical refrigeration system is as follows: figure 1 As shown, including outdoor unit and indoor unit.
[0024] Wherein, the outdoor unit is mainly composed of variable capacity compressor 101, four-way valve 105, outdoor heat exchanger 106, electronic expansion valve 108, connecting pipelines and other parts.
[0025] In the cooling condition, the flow sequence of the refrigerant is as follows, and a closed-loop refrigeration circuit is formed:
[0026] Variable capacity compressor 101→oil separator 102→one-way valve 103→four-way valve 105→outdoor heat exchanger 106→electronic expansion valve 108→indoor heat exchanger 115→four-way valve 105→variable capacity compressor 101 .
[0027] In the heating condition, the flow sequence of the refrigerant is as follows, and a closed-loop heating circuit is formed:
[0028] Variable capacity compressor 101→oil separator 102→on...
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