Cylindrical ice is generally made by spraying, which has a low freezing point and can reach below -20 ℃. The contact surface between cylindrical surfaces is small and not easy to stick together, making it convenient to use ice. Cylindrical ice cubes have high hardness, low temperature, and are crystal clear. They are suitable for cooling foreign wine. The slower melting speed will not dilute the wine, but will affect its taste. The disadvantage of cylindrical ice makers is that their ice production efficiency is relatively low, and they are generally used for producing small desktop ice makers.

The chilled water from the ice maker's storage tank is continuously circulated through a plate or grid evaporator using a water pump; After the compressor runs, it undergoes suction compression exhaust condensation (liquefaction) throttling and then vaporizes at a low temperature of -10 to -18 degrees Celsius in the evaporator. Frozen water continuously condenses into an ice layer on the surface of the evaporator at a lower temperature of 0 degrees Celsius. When the ice layer condenses to a certain thickness, and the evaporation temperature of the refrigerant reaches the set temperature of the temperature control, the defrosting solenoid valve is connected, and the heat pump is often used to defrost, and then the next cycle is achieved.