Air cooling refrigerator defrosting method

Abstract

The invention discloses an air cooling refrigerator defrosting method. The air cooling refrigerator defrosting method includes the following steps that: first step, after accumulative operating time of a compressor achieves a set value, the method enters a second step; second step, defrosting preparation is performed; third step, after the temperature of a freezing chamber drops TLD degrees, an electric control device of the refrigerator judges whether THS is smaller than TDFTE-3 degrees in a refrigeration process of the freezing chamber, when THS<=TDFTE-3 degrees, the second step is terminated, and the method enters a fourth step; and fourth step, defrosting is performed, the defrosting specifically includes the following steps that: the electric control device controls the compressor and makes the same stop working, and then, starts up a freezing defrosting heating tube to heat an evaporator, and turns off the freezing defrosting heater when a freezing defrosting electric heating condition quitting condition is satisfied, and the electric control device control makes the compressor stop for 6 minutes, and then, the air cooling refrigerator defrosting method is terminated, a normal startup-shutdown control program is initiated. According to the air cooling refrigerator defrosting method of the invention, an optimized control method is utilized to perform fine adjustment on a defrosting process, and therefore, energy consumption increase caused by frequent defrosting of the refrigerator can be avoided, and condensed frost can be melt completely.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a method for defrosting an air-cooled refrigerator. Background technique [0002] The defrosting technology of the air-cooled refrigerator is to use the fan and air duct system inside the air-cooled refrigerator to blow cold air from the air outlet to the inside of the box to freeze and refrigerate food. As the air circulates, hot air and water vapor are sucked into the return air duct, and when passing through the evaporator, they freeze on the surface of the evaporator to form a frost layer, so that the frost inside the box can be removed. However, the frost layer condensed on the evaporator will affect the cooling performance and even block the air circulation. On the contrary, it will cause the temperature of the box to rise, affect the cooling effect, and increase energy consumption. Therefore, it is necessary to defrost the evaporator. [0003] The existing defrostin...

AI Technical Summary

Problems solved by technology

[0004] Furthermore, the current defrosting devices use electric heating tubes, generally with a power of 100W-280W, so the frequency and time of defrosting are factors that affect energy consumption