Working Principles of the Unit
Fig.11 Schematic Diagram of MULTI-S Inverter Air Conditioner Unit's System
Heat Exchanger
S
c
E
Four-Way Valve
D
Compressor
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 refrigerant cycle goes round and round to achieve the desired
cooling purpose. During the heating operation, the four-way valve is involved to make the
refrigerant cycle 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.
Capillary
Motor
Gas/Liquid Separator
Electronic Expansion Valve
59
Heat Exchanger
Filter
1#
2#
3#
4#