An adaptive defrosting control method and device thereof

Abstract

The invention discloses an adaptive defrosting control method and a device thereof, and relates to the technical field of refrigerator defrosting. The present invention includes a timing unit, a detection unit, a recording unit, a calculation unit and a control unit; wherein, the interval time Hi of defrosting, the humidity RHj of the return air outlet, and the cumulative working time Ti of the press are monitored; the humidity value RHj of the return air outlet is accumulated to obtain Average value; establish the frosting thickness prediction value Di, predict the heat exchange capacity of the evaporator and the degree of frosting, start the defrosting, and monitor the time ti from the beginning to the end of the defrosting, and update the next defrosting interval cycle. The present invention monitors the humidity at the return air outlet of the controlled compartment and the weighted cumulative value of the accumulative running time of the compressor as the judgment basis, can more accurately predict the heat transfer capacity of the evaporator and the degree of frosting, and then update the next defrosting interval period, thereby The frequency of defrosting is adapted to the actual use of the refrigerator to achieve the purpose of saving energy and reducing consumption.

Description

technical field [0001] The invention belongs to the technical field of refrigerator defrosting, in particular to an adaptive defrosting control method and a device thereof. Background technique [0002] Frost on the evaporator will seriously affect the heat exchange capacity of the evaporator. Conventional defrosting control generally controls the defrosting of the heater according to the method of setting a specific time, for example, according to the accumulated running time of the compressor or the door opening time reaching the preset value, Start the heater to defrost. This kind of defrosting control does not defrost according to the actual frosting situation. According to the different usage environments of the refrigerator, when the accumulative running time of the compressor or the door opening time is the same, the degree of frosting on the evaporator will be different. Do not start defrosting when defrosting should not be used to waste electricity. [0003] In o...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an adaptive defrosting control method, by monitoring the humidity at the return air outlet of the controlled room and the weighted cumulative value of the cumulative running time of the compressor as the basis for judgment, the heat transfer capacity and performance of the evaporator can be more accurately predicted. Then adjust the duration of the next defrost interval cycle according to the defrost duration of the previous defrost cycle, which solves the existing problems of not being able to defrost in time and wasting electric energy

Images