To provide a refrigerating device of which the refrigerating effects is increased.

This refrigerating device has two compressors 15, 16, a condenser 22, an evaporator 35 and a heat-exchanger which can be freely heated by an electric heater 31. The internal chamber 28a of the heat-exchanger, a core part 28a is made to go through. These constituent elements are connected with a piping on which a plurality of solenoid valves are provided. By the opening/closing of the solenoid valves, one part of a liquefied refrigerant, which is compression-discharged from the compressors 15, 16, and passes through the condenser 22, is jetted in the core part 28a of the heat-exchanger 28 from a first expansion valve 27, and the core part 28a is refrigerated. The remained part of the liquefied refrigerant passes through the internal chamber 28b of the heat-exchanger, and after being refrigerated at the core part 28a, is jetted and expanded into the evaporator 35 from a second expansion valve 34. The refrigerant having passed through the evaporator 35, is drawn by the second compressor 16. The refrigerant which comes out from the heat-exchanger is drawn by the first compressor 15. A refrigeration is performed by this circulation.