Free Match D.C.inverter Muti-variable Air Conditioner Outdoor Unit
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3 Working Principles of the Unit
Schematic Diagram of Free Match Series Inverter Heat Pump Multi VRF System
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Fig. 11 Schematic Diagram of Free Match Series Inverter Heat Pump Multi VRF System
The outdoor and indoor units start to work once the power is switched on. During the cooling
operation, the low temperature, low pressure refrigerant gas from the heat exchanger of each
indoor unit gets together and then is taken into the compressor to be compressed into high
temperature, high pressure gas, which will soon go to the heat exchanger of the outdoor unit to
exchange heat with the outdoor air and then is turned into refrigerant liquid. After passing through
the throttling device, the temperature and pressure of the refrigerant liquid will further decrease and
then go the main valve. After that, it will be divided and go to the heat exchanger of each indoor
unit to exchange heat with the air which needs to be conditioned. Consequently, the refrigerant
liquid become low temperature, low pressure refrigerant gas again. Such a refrigeration cycle goes
round and round to achieve the desired cooling purpose. During the heating operation, the four-way
valve is involved to make the refrigeration cycle run reversely. The refrigerant radiates heat in the
heat exchanger of the indoor unit (so do the electric heating devices) and absorb heat in the heat
exchanger of the outdoor unit for a heat pump heating cycle so as to achieve the desired heating
purpose.
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