５
．１
５
．２
5.
10
Working principle diagram
Cooling system diagram for cooling only type
Cooling system diagram for cooling/heating type
When the power is on, indoor and outdoor units will start to run. The compressor sucks low-pressure refrigerant gas from the evaporator of indoor unit and
then discharges high-temperature, high-pressure refrigerant gas into outdoor condenser. Then air exchanges the heat with outdoor air and becomes refrigerant
liquid. The liquid is throttled by the capillary and changes into low-temperature and low-pressure liquid and then flows into indoor evaporator. Then liquid exchanges
the heat with the required air and changes into low-temperature and low-pressure refrigerant gas. the cycle introduced above goes on and on, and the demanded low
temperature environment is maintained.
When the power is on, indoor and outdoor units will start to run. When the system operates in cool mode, the compressor sucks low-temperature, low-
pressure refrigerant gas from indoor evaporator and then discharges high-temperature, high-pressure refrigerant gas into outdoor heat exchanger. With the
help of axial flow fan, the gas transfers its latent heat into outdoor air and becomes high-pressure refrigerant liquid. The liquid is throttled by the capillary
and changes into low-temperature and low-pressure liquid and then flows into indoor heat exchanger. With the help of centrifugal fan, the liquid evaporates
into low-temperature refrigerant gas and indoor air is cooled down. The refrigerant gas is sucked into the compressor and the cycle introduced above goes
on and on, and the demanded low temperature environment is maintained.
When the system operates in heat mode, 4-way valve changes its way and the refrigerant flows in the reversible cycle as the cool mode. The refrigerant
discharges its latent heat in the indoor heat exchanger, and sucks heat from outdoor heat exchanger and forms the heat pump cycle. This cycle goes on and
on, and the demanded high temperature environment is maintained.
Heating
Cooling
Compressor
Gas-liquid separator
Condenser
electromagnetic
4-way valve
Axial flow fan
Auxillary capillary
Main capillary Filter
One-way valve
Cross flow fan
Evaporator
Evaporator
Cross flow fan
Capillary
Filter
Axial flow fan
Condenser
Compressor
Gas-liquid separator
