Refrigerant circulation control device and method for multi-connected air conditioner
A technology of multi-connected air conditioners and control devices, which is applied in heating and ventilation control systems, applications, refrigerators, etc., can solve the problems of inability to guarantee the circulation of refrigerant, inappropriate circulation of refrigerant, and no adjustment effect, so as to ensure the operation performance. and the effect of the user using the effect
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[0040] As shown in Figure 1, the outdoor unit of the multi-unit air conditioner includes a compressor, a condenser 8 and an evaporator 9. The compressor exhaust pipe 11' and the suction pipe 12' are connected to the condenser 8 and the evaporator 9 through a four-way valve. Are connected, wherein the refrigerant circulation amount control device includes:
[0041] A refrigerant quantity adjusting device 1, which is connected to the condenser 8 and the evaporator 9 through the collecting pipe 7;
[0042] An electronic expansion valve 4, which is connected between the refrigerant quantity adjusting device 1 and the evaporator 9,
[0043] The pipeline 10 has two branch pipes 101 and 102 respectively connected from the chamber 11 of the refrigerant quantity adjusting device to the exhaust pipe 11' and the suction pipe 12' of the compressor, and the two branch pipes 101 and 102 are respectively connected in series with solenoid valves 2 , Solenoid valve 3;
[0044] A suction temperatur...
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