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Air Dryer
6 References
6-5 Compressed Air and Refrigerant Circuit/Operation Principles
6 - 4
IDFA Series
IDX-OM-I076
6-5 Compressed Air and Refrigerant Circuit/Operation Principles
Compressed Air Circuit
Humid hot air entering air dryer is cooled in the cooler. At this time, the condensate is separated from the air by the
drain separator and automatically discharged. The dry air is heated by the re-heater until it gets about the same
temperature as that of ambient air. It is then discharged from air dryer outlet.
Refrigerant Circuit
The freon gas charged in the refrigerant circuit is compressed by the compressor and cooled by the condenser to
become liquid. Then, going through the capillary tube, the refrigerant pressure and temperature (evaporating
temperature) decreased rapidly.
Passing through the cooler part, it draws heat from the hot compressed air and
intensely boils. Finally, it is sucked into the compressor again. The hot gas bypass valve opens to prevent
compressor from freezing when compressed air is too cold.
CAPACITY
REGULATING
VALVE
EVAPORATION
THERMOMETER
AIR INLET
CAPILLALY
HIGH PRESSURE SWITCH
(IDFA55E,75E)
PRESS. SWITCH
FAN MOTOR
CONDENSOR
COMPRESSOR
ACCUMULATOR
(IDFA22E,37E,55E)
AIR OUTLET
REHEATER
BALL VALVE
AUTO DRAIN
DRAIN OUTLET