A cold drink machine is a refrigerating appliance for making cold drinks. Adopts the motor compression refrigeration principle refrigeration. The compressor does work on the refrigerant freon which is charged into the system. The freon changes phase during the flow process, and the liquid refrigerant evaporates in the evaporator, absorbing the heat of the beverage. In the condenser, the gaseous refrigerant is cooled by the outside air (or water) to liquefy, giving off heat. This cycle keeps cooling the drink.