Do you know what an ice maker is?


Do you know what an ice maker is?

   Ice maker (English name: ice maker or ice machine) is a kind of refrigeration mechanical equipment that produces ice after passing water through the evaporator and cooled by the refrigeration system refrigerant. Ice is produced behind the equipment. According to the principle of the evaporator and the different production methods, the shape of the ice cubes produced is also different; people generally divide ice machines into pellet ice machines, flake ice machines, plate ice machines, tube ice machines, shell ice machines, etc. Wait.

working principle

Through the supplementary water valve, the water automatically enters a water storage tank, and then the water is pumped through the flow control valve to the diverter head, where the water is evenly sprayed on the surface of the ice maker and flows through the ice maker like a water curtain On the wall surface, the water is cooled to the freezing point, and the water that has not been evaporated and frozen will flow into the water storage tank through the porous tank, and the cycle will restart.
When the ice reaches the required thickness (the thickness can be arbitrarily selected by the operator/user), the hot air discharged from the compressor is re-introduced into the wall of the ice maker to replace the low-temperature liquid refrigerant. In this way, a thin film of water is formed between the ice and the wall of the evaporation tube. This water film will play a role of lubrication when the ice falls freely into the groove below by gravity. The water produced during the ice-picking cycle will return to the water storage tank through the porous tank, which also prevents the wet ice from being discharged by the machine.
1. The chilled water pump in the water storage tank continuously circulates through the plate or compartment evaporator ;
2. After the compressor is running, it undergoes suction-compression-exhaust-condensation (liquefaction)-throttling-and then evaporates at a low temperature of -10 to -18 degrees in the evaporator to absorb heat and vaporize. Chilled water continuously condenses into an ice layer on the surface of the lower evaporator at a water temperature of 0 degrees. When the ice layer has condensed to a certain thickness, when the evaporation temperature of the refrigerant reaches the temperature-controlled setting temperature, the defrost solenoid valve is turned on, and the deicing is usually performed in the form of a heat pump, and then the next cycle is realized.
Ice making process
Through the water inlet valve, the water automatically enters a water storage tank, and then is pumped by the water pump to the shunt pipe. The shunt pipe evenly flows the water to the evaporator cooled by the low-temperature liquid refrigerant. The water is cooled to the freezing point, and these are cooled to the freezing point The water will freeze and become ice, and the water that has not been frozen by the evaporator will flow into the water storage tank and restart the circulation through the water pump.
When the ice cube reaches the required thickness, it enters the deicing state, and the high-pressure hot air discharged from the compressor is led to the evaporator through the reversing valve to replace the low-temperature liquid refrigerant. In this way, a water film is formed between the ice cubes and the evaporator. This water film causes the ice cubes to leave the evaporator. When the ice cubes fall freely into the ice storage tank below by the action of gravity.

Main classification


Ice makers can be divided into commercial ice makers , household ice makers, and industrial ice makers.
The ice maker is divided into ice shapes: granular ice (cylindrical, cube, moon), snowflake, flake ice, slab ice, tube ice, and the newly developed spherical ice.
According to the ice making method, granular ice is divided into spray type, flowing water type and immersion type.
Cylindrical ice is generally made by spraying ice. This method of ice making has a low freezing point and can reach below minus 20°C. The contact surface between the cylindrical surfaces is small, it is not easy to stick into a mass, and it is convenient to use ice. Cylindrical ice cubes have high hardness, low temperature, and crystal clear ice cubes. They are suitable for cooling foreign wines. The slower melting speed will not dilute the foreign wines, but will affect the taste of the foreign wines. The disadvantage of the cylindrical ice maker is that the efficiency of ice production is relatively low. , Generally used in the production of bar table small ice machines.
The temperature of flake ice is -6℃~ -12℃, which is most suitable for cooling in industrial processing and transportation of perishable items. It is often used for seafood display on supermarket fresh food stands. Large scale ice can also be used in cement plants, chemical plants, meat plants, marine fisheries, etc.
Refrigeration methods can be divided into: water-cooled ice maker and air-cooled ice maker.