Refrigerator and defrosting control method thereof

Abstract

The invention further provides a refrigerator and a defrosting control method thereof. The method comprises the step of adjusting the power of a corresponding defrosting module according to the surface temperature change of an evaporator and the position of each defrosting module. The method is characterized in that the power of the corresponding defrosting module is adjusted according to the surface temperature change of the evaporator and the position of each defrosting module; and when the surface temperature of the evaporator exceeds the preset temperature, the power of each defrosting module is properly reduced, so that the temperature of the evaporator is prevented from rising too fast, and subsequent refrigerator refrigeration is prevented from being affected. According to the defrosting control method of the refrigerator, the power of the plurality of defrosting modules is correspondingly reduced according to different positions of the plurality of defrosting modules; and specifically, the frosting characteristic of the surface of the evaporator serves as the base, namely, the frosting degree of the part on the top of the evaporator part is lower, and the frosting degree ofthe part at the bottom of the evaporator is low, and the power value of the defrosting module at the top is mainly reduced, so that integral defrosting of the evaporator is more uniform.

Description

technical field [0001] The invention relates to a refrigerating and freezing device, in particular to a refrigerator and a defrosting control method thereof. Background technique [0002] After the air-cooled refrigerator has been in operation for a period of time, the evaporator will experience frost, which will affect its operating efficiency. Therefore, the refrigerator needs to defrost the evaporator after a period of cooling. [0003] A defrosting heating wire is provided near the evaporator inside the existing refrigerator, and after the heating wire is energized, the evaporator is heated by heat radiation to achieve the purpose of defrosting. However, in traditional electric heating defrosting, the temperature of the evaporator near the heating wire is higher and the defrosting speed is faster, while the defrosting speed is slower at the position farther from the heating wire, so it is easy to cause uneven defrosting of the evaporator as a whole. In addition, electri...

AI Technical Summary

Problems solved by technology

However, this method of setting the defrosting start point and end point based on experience has poor defrosting effect because the frosting / defrosting situation cannot be clearly defined.

Especially when it is determined that the defrosting is terminated, if the frosting on the evaporator is not completely eliminated and the defrosting is stopped, it will lead to insufficient defrosting, which will affect the subsequent cooling effect of the evaporator; if the frosting on the evaporator It has been completely eliminated, but the heating wire has not stopped heating, which will cause energy waste and affect the service life of the defrosting device

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