Teaching instrument for alternating-current variable-frequency multi-unit air conditioner integrated control system
An integrated control system and AC frequency conversion technology, applied in the field of teaching instruments, can solve problems such as teaching, working principles, complex troubleshooting and maintenance skills, and difficulty in mastering large-scale and complex systems, so as to be beneficial to practical training and failure Detect and troubleshoot, improve teaching effectiveness
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[0022] The present invention will be further described below in conjunction with drawings and embodiments.
[0023] The refrigeration working process of the AC variable frequency multi-connected air conditioner of the present invention is as follows: in the refrigeration cycle, the fixed frequency compressor and the variable frequency compressor respectively inhale the low-temperature and low-pressure refrigerant vapor generated in the evaporator, and maintain the low-pressure state of the evaporator, thereby Created the condition that the refrigerant liquid in the evaporator continuously boils at low temperature. After the refrigerant passes through the compressor, its temperature and pressure rise, creating conditions for the refrigerant to be liquefied at room temperature. The high-temperature and high-pressure steam is centrally discharged to the oil separator to meet, and is discharged into the condenser through the main four-way valve and the auxiliary four-way valve. Wh...
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