The refrigerating system of a clothes dryer consists of a refrigeration compressor, a condenser, an evaporator and a heat coil. Its role is to cool the gas containing four vinyl chloride in the process of drying air by the evaporator, the four vinyl chloride by gas into a liquid, then the pipeline to the water separator, separated by solvent cleaning solvent into the cylinder, to achieve the purpose of recycling solvent; heating coil is flowing by high-temperature high-pressure freon refrigeration compressor. The heat flows through the heating of the air (the heating mode for this kind of type, so the main heater) can improve the efficiency of the refrigeration system and the clever use of heat, to achieve the purpose of saving energy