Constant-temperature dehumidification device

The utility model discloses a constant temperature dehumidification device which comprises a machine frame, an evaporator, an air cooling heat exchanger, a cryogenic energy saver, a compressor and a liquid storage tank, the cryogenic energy saver comprises a first heat exchange pipe and a second heat exchange pipe, and the evaporator, the first heat exchange pipe and the liquid storage tank are connected in series to form a refrigeration circulation loop. The air cooling heat exchanger, the second heat exchange pipe and the compressor are connected in series to form a heating circulation loop, and the outer side wall of the first heat exchange pipe abuts against the outer side wall of the second heat exchange pipe, so that high-temperature gas passing through the first heat exchange pipe exchanges heat with low-temperature liquid passing through the second heat exchange pipe. When the device works, the evaporator and the air-cooled heat exchanger operate at the same time, and constant-temperature adjustment i