Defrosting control system and control method of refrigerator

Abstract

The invention relates to a defrosting control system and a defrosting control method of a refrigerator. The system comprises a controller, a circulating fan, and a defrosting temperature sensor, a refrigerating chamber temperature sensor, a freezing chamber temperature sensor and an environmental temperature sensor connected with the controller, wherein the circulating fan is arranged beside a refrigerator evaporator; an air flue where the circulating fan is positioned is provided with a freezing chamber air inlet and a refrigerating chamber air inlet, and the air inlets are provided with a freezing chamber air inlet electric air door and a refrigerating chamber air inlet electric air door respectively; the air flue where the other side of the refrigerator evaporator corresponding to the circulating fan is positioned is provided with a freezing chamber return air port and a refrigerating chamber return air port; and the freezing chamber return air port is provided with a freezing chamber return air port electric air door. Refrigeration and defrosting are controlled by controlling the electric air doors of each air port and the circulating fan so as to save electrical energy, avoid generating continuous high temperature to affect the temperature of the refrigerator and reduce the energy consumption; and the refrigerator evaporator is defrosted through relative hot air of the refrigerating chamber by using the temperature difference between the refrigerating chamber and the refrigerator evaporator, so the energy utilization rate is high and the energy consumption is saved.

Description

technical field [0001] The invention relates to the technical field of refrigerators in electrical equipment, in particular to a refrigerator defrosting control system and a control method thereof. Background technique [0002] Usually, a layer of frost will form on the surface of the evaporator after the refrigerator has been in operation for a period of time, which will affect the heat exchange between the evaporator and the air in the frost and reduce the cooling efficiency, so the refrigerator must be defrosted after a period of operation. The defrosting device of a general refrigerator includes an evaporator, a defrosting heating pipe, a water tray heating pipe, a defrosting temperature sensor, a high temperature fuse, and a refrigerator controller. The defrosting process of a general refrigerator is that after the refrigerator has been working for a certain period of time, the refrigerator controller is connected to the defrosting heating pipe, and the defrosting heati...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a refrigerator defrosting control system and its control method that use temperature difference and heat exchange to defrost the evaporator and cool the refrigerator compartment, so as to solve the energy consumption of the refrigerator during the defrosting process. The problem of consumption and cooling waste

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