The invention relates to a
heat pipe steam compression composite type
refrigeration system for air conditioners and provided with an ejector. The outlet of a variable frequency compressor is divided into two paths, one path passes through a flow regulating valve and then is connected with the inlet of a
nozzle of the ejector, the outlet of the ejector is connected with the inlet of an
evaporator; the other path passes through a
solenoid valve and then is connected with the inlet of a condenser, the outlet of the condenser is connected with the inlet of a
liquid storage device, the outlet of the
liquid storage device is divided into two paths, one path passes through an
electronic expansion valve and then is connected with the inlet of the
evaporator, the other path is connected with the ejection inlet of the ejector; the outlet of the
evaporator is divided into two paths, one path is connected with the inlet of the variable frequency compressor, the other path passes through the flow regulating valve and then is connected with the inlet of the condenser; the
system comprises two working
modes including a compression
refrigeration mode and a
heat pipe cooling mode. Addition of
mechanical devices is not needed, the
refrigerant forced circulation of the
heat pipe loop in the heat
pipe cooling mode is achieved, the reliability of cooling of an outdoor natural cold source is ensured, and the development of the
data center / communication
base station (or
machine room) air conditioner energy-saving technology is actively promoted.