The refrigeration principle is not qualitatively different from other refrigeration systems, but the temperature control is more accurate and the temperature is lower:
The refrigeration system consists of refrigerants such as a compressor, condenser, expansion valve, evaporator, and four components. The function of a compressor is to compress low-pressure steam into high-pressure steam, reducing steam volume and increasing pressure. The compressor sucks in low-pressure steam from the evaporator, causing pressure to enter the condenser and condense into high-pressure liquid. After being throttled by the throttle valve, it becomes low-pressure liquid and enters the evaporator. The evaporator absorbs heat and evaporates, entering the inlet of the compressor, completing the refrigeration cycle.
Water enters the water distributor from the inlet of the evaporator of the sheet ice machine, and is evenly sprinkled onto the inner wall of the evaporator through the sprinkler pipe, forming a water film; The water film exchanges heat with the refrigerant in the evaporator channel, causing a rapid decrease in temperature and the formation of thin ice on the inner wall of the evaporator. Under the pressure of the ice knife, it broke into pieces of ice and fell into the ice storage through the ice drop. Some water that has not formed ice flows back from the return port to the cold water tank through a water receiving tray and is pumped through a cold water circulation pump.
When the ice reaches the required thickness (normally, the thickness of the ice is 1.5-2.2MM), the hot air discharged by the compressor is directed back to the ice making clamp wall to replace the low-temperature liquid refrigerant. In this way, a water film is formed between the ice and the wall of the evaporation tube, which acts as a lubricant when the ice freely falls into the trough through gravity. The water generated during the ice harvesting cycle will be returned to the storage tank through multiple holes to prevent wet ice from being discharged by the machine.