The utility model discloses a multi-parallel aluminum plate cold dryer, and relates to the technical field of
compressed air drying. The
plate heat exchanger comprises a plurality of sets of
parallel plate heat exchangers made of all-aluminum materials, modular rapid connection is achieved through a gas collecting
pipe and a groove type hoop connector, the plate heat exchangers are integrated with a precooler, an
evaporator and a gas-water separator, a vacuum
brazing aluminum plate fin structure is adopted, and an air and
refrigerant alternate flowing channel is formed. In the refrigerating
system, a compressor suction and
exhaust pipe is provided with a high-low pressure protection device, an energy regulating valve balances
system pressure, and the temperature of an
evaporator is stabilized at about 3 DEG C to avoid ice blockage; the water-cooling type condenser is provided with a flow regulating valve, and the air-cooling type condenser is provided with a
pressure switch of a fan. And the precooler and the
evaporator are connected in series to recover cold energy and reduce
energy consumption. The all-aluminum gas collecting pipeline is integrated with a pressure / temperature sampling port, and is convenient to install and resistant to
corrosion. The device has the advantages of
high heat exchange efficiency, compact structure,
pollution resistance, easiness in expansion and the like, and is suitable for industrial-grade
compressed air efficient clean
drying scenes.