A method for controlling the defrosting of an air-cooled refrigerator

Abstract

The invention provides a defrosting control method of an air cooling refrigerator. The method comprises the steps of (S1) judging whether defrosting conditions are met or not, if the defrosting conditions are met, stopping the operation of a compressor for defrosting, and opening an air door of a refrigeration chamber to start a fan 1; and starting other chamber fans except for the refrigeration chamber; (S2) operating the fan 1 until the temperature of an evaporator sensor reaches a set temperature te, stopping the fan 1, and starting a defrosting heater; (S3) judging whether a set temperature for ending defrosting is satisfied or not, if the set temperature is satisfied, cutting off the defrosting heater to start the water dripping time; and (S4) judging whether the water dripping time is up or not, if the water dripping time is up, detecting the temperature of each chamber sensor; starting the compressor when any chamber reaches a machine starting point, opening the air door, starting the fan 1, and starting refrigeration of the refrigeration chamber; and then, judging whether the temperature te of the evaporator sensor reaches a set value td or not, if the temperature te of the evaporator sensor reaches a set value td, starting a fan 2 and a fan 3, and starting refrigeration through a freezing chamber. The method can reduce the defrosting energy consumption of the air cooling refrigerator to reduce the total energy consumption.

Description

technical field [0001] The invention relates to the technical field of refrigerators, in particular to a method for controlling defrosting of an air-cooled refrigerator. Background technique [0002] The air-cooled refrigerator is also called a frost-free refrigerator. Its working principle is: the high-temperature air from the outside flows through the evaporator installed inside the refrigerator for heat exchange, so that the temperature of the air after the heat exchange is lowered, and the temperature has been lowered after the heat exchange. The cold air is blown into the refrigerator compartment through the air duct, so as to achieve the purpose of cooling. During the above working process, the moisture in the high-temperature air will condense and frost on the surface of the cold evaporator when it encounters the cold evaporator. As it is used for a long time, it will easily lead to poor cooling effect and shorten the service life of the refrigerator. [0003] In the...

AI Technical Summary

Problems solved by technology

During the above working process, the moisture in the high-temperature air will condense and frost on the surface of the cold evaporator when it encounters the cold evaporator. As it is used for a long time, it will easily lead to poor cooling effect and shorten the service life of the refrigerator.

[0003] In the prior art, the frost on the evaporator of the air-cooled refrigerator is generally installed at the lower part of the evaporator by installing a steel pipe heater to melt the frost on the evaporator through heat radiation and heat conduction, but a large amount of hot gas after defrosting will remain in the evaporator chamber And in the air duct connected with the evaporator, the heat carried by the hot air needs to be cooled again by the evaporator to reduce the temperature in the evaporator room and the box. Increased frost energy consumption

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