There are many reasons that affect the frosting of  air cooled ice cube maker, such as evaporator structure, atmospheric environment (temperature, humidity) and air velocity. The order of influence on frost formation and air cooler performance is as follows:

1. Temperature difference between inlet air and cold air in cold storage;

2. Humidity of inhaled air;

3, fin spacing;

There is also a balance between manual defrosting and operating costs. Because each  air cooled ice cube maker has different kinds of goods, different packing conditions and different frosting speed of exhaust pipes, the time interval of artificial defrosting can only be determined according to their specific conditions. The scientific approach is to make a comprehensive analysis and comparison of the increase in operating electricity and defrosting labor costs of the system caused by the thickness of the frost layer, so as to determine a reasonable and economical defrosting cycle. .The specific analysis idea is that the frost layer thermal resistance is caused in a reasonable defrosting cycle.