Control method of air-cooled refrigerator

Abstract

The invention discloses a control method of an air-cooled refrigerator. The control method comprises the following steps that the operation time T of a refrigerating mode and operation parameters of the air-cooled refrigerator are detected after refrigeration of the refrigerator is completed, specifically, the operation parameters comprise air door opening time; when the operation time T is smaller than the preset time delta T and the operation parameters do not meet set conditions, the refrigerator keeps refrigerating; and when the operation time T is larger than or equal to the preset time delta T or the operation parameters meet the set conditions, a defrosting mode of the refrigerator is started. According to the control method of the embodiment of the invention, frost quantity can be estimated reversely through the operation parameters such as the air door opening time according to the influence rule of the frost quantity on the surface of an evaporator on the air door opening time, and meanwhile the influences of multiple factors such as the opening time of a refrigerator door, the internal load capacity of the refrigerator, the environment temperature and the heat exchange efficiency of the evaporator on the frost quantity can be reflected indirectly through the air door opening time; and the defrosting cut-in time is judged accurately, and the situation that defrosting is conducted too early or too late is avoided.

Description

technical field [0001] The invention relates to the field of refrigerator control, in particular to a control method of an air-cooled refrigerator. Background technique [0002] At present, air-cooled frost-free refrigerators have gradually become the mainstream products in the refrigerator industry. Air-cooled frost-free refrigerators are not frost-free in the true sense, but only through the flow of air to condense the moisture in the air on the surface of the finned evaporator, that is, the surface of the evaporator. frost layer. When the frost layer on the surface of the evaporator is less, it can promote the heat exchange of the evaporator, but as the amount of frost on the surface of the evaporator increases, the heat transfer resistance of the evaporator increases, and the pressure drop loss of the return air flowing through the surface of the evaporator increases. The air supply volume of the system is significantly reduced, which eventually leads to a significant r...

AI Technical Summary

Problems solved by technology

However, due to the strong dynamics in the actual use of the refrigerator, such as the user storing various foods during actual use, the correlation between the cumulative running time of the compressor and the growth process of the frost layer on the surface of the evaporator is poor, making the former unable to respond well The amount of frost on the surface of the evaporator, the phenomenon that the defrosting process starts earlier or later, seriously affects the performance of the refrigerator

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