Refrigerator defrosting control method and device and refrigerator

Abstract

The embodiment of the invention provides a refrigerator defrosting control method and device and a refrigerator, and relates to the technical field of refrigeration. By adopting the simple refrigerator defrosting control mode, the defrosting effect is guaranteed, and meanwhile, the refrigerator has an obvious energy-saving effect. The method comprises the steps of starting timing after defrosting operation is started once in the refrigerator in the refrigeration operation process of the refrigerator; judging the accumulated number of times of starting defrosting operation of a second mode after the refrigerator starts the defrosting operation of a first mode after the time is counted to a preset duration, wherein according to the defrosting operation of the first mode, defrosting is carried out at fixed power until the temperature of an evaporator reaches a preset temperature, and according to the defrosting operation of the second mode, defrosting is carried out at fixed power within a preset defrosting operation duration; and when the accumulated number of times of starting the defrosting operation of the second mode is greater than or equal to M, starting the defrosting operation of the first mode, and when the temperature of the evaporator of the refrigerator reaches the preset temperature, exiting the defrosting operation of the first mode. The defrosting control method and device are used for defrosting of the refrigerator.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of refrigeration, in particular to a method and device for controlling defrosting of a refrigerator, and a refrigerator. Background technique [0002] Under the requirement of energy-saving technology, the energy consumption requirements of refrigerators are getting higher and higher. Among them, the defrosting of frost-free refrigerators accounts for a relatively high proportion of the total energy consumption, so how to reduce the energy consumption of defrosting has always been the direction of joint research by various companies. In the prior art, the defrosting is mostly accomplished by means of an external heat source, thereby additionally increasing the heat load. [0003] At present, the defrosting of refrigerators is mainly based on the length of each defrosting operation time and the interval time between two defrosting operations. The length of defrosting running time refer...

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Problems solved by technology

[0005] In the above three schemes, the mode of detecting the temperature of the evaporator is used to control the exit of defrosting operation. In schemes 1 and 2, since the temperature control is required to exit the defrosting operation, and each defrosting operation will completely defrost, However, when the amount of frosting is small, it does not affect the normal operation of the refrigerator, so the energy consumption is relatively large; although in the third scheme, the temperature of exiting the defrosting operation can be controlled below zero for incomplete defrosting to save energy consumption, but This control mechanism needs to repeatedly calculate the exit temperature of defrosting operation, which is more complicated

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