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IDX-OM-V024
Chapter
7
Documents
IDFB60/70/80/90 Series
7.5
Air/ Refrigerant Circuit
7-5
7.5 Air/ Refrigerant Circuit
Air circuit
The humid hot air that enters the air dryer first goes into the reheater, and exchanges its heat with
dehumidified cold air to pre-cool it. Then, the air enters the evaporator, where it releases its heat
to a cold HFC, and is dehumidified and cooled further to let moisture separate. Finally, the air
exchanges heat with the hot air coming to the air dryer and its temperature increases higher, and
it leaved the air dryer as warm, dry air.
Refrigerant circuit
The fluorocarbon gas (HFC) in the refrigerant circuit is compressed by the compressor and cooled
by the condenser to become liquid. When passing through the capillary tube, the HFC gas is
regulated and its temperature decreases. While passing through the cooler part, it evaporates
rapidly, taking the heat from the compressed air, and is sucked in by the compressor. The volume
control valve opens when the compressed air has been cooled sufficiently, and prevents
condensed water from being frozen by excessive cooling.
Pressure switch
air outlet
Compressored
Ball valve
Cooler re-heater
(Heat exchanger)
Auto drain
Capillary tube
High pressure switch
Drain outlet
air inlet
Evaporation
thermometer
Fan motor
Condenser
control valve
Volume
Accumulator
Compressor for
Compressored
refrigeration
Summary of Contents for IDFB60-23-C
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