A refrigerator frost catcher and its defrosting reminder system and control method

Abstract

Provided are a refrigerator frost collection plate and a defrosting prompt system and a control method of the refrigerator frost collection plate. The frost collection plate comprises a frost collection plate body and a clear frost plate fixed to the frost collection plate body in a spliced mode. The refrigerator frost collection plate body is tightly fixed to the upper surface of a top evaporator, the clear frost plate is located on the front side of the top evaporator, and the frost collection plate body is located on the rear side of the top evaporator. The system comprises the refrigerator frost collection plate, an evaporator temperature sensor, a freezing chamber compartment temperature sensor, a defrosting indicator light and a controller, wherein the evaporator temperature sensor is fixed to the bottom of the top evaporator, the freezing chamber compartment temperature sensor is arranged in the middle of a freezing chamber, the defrosting indicator light is fixed to the front of a refrigerator, the controller is connected with the evaporator temperature sensor, the freezing chamber compartment temperature sensor and the defrosting indicator light, and the controller is also connected with a compressor. Water vapor of the freezing chamber is guided by the frost collection plate to gather and frost at a specific position, and the surface of the evaporator is slightly frosted or is frostless; when defrosting conditions are reached, the defrosting indicator light sends out a defrosting prompt to remind people of defrosting; defrosting is convenient and fast, a power failure does not occur during defrosting, and time and labor are saved.

Description

technical field [0001] The invention belongs to the technical field of refrigeration appliances and refrigerators, and in particular relates to a frost-catching plate of a refrigerator, a defrosting prompt system and a control method thereof. Background technique [0002] At present, household direct-cooling refrigerators have frost refrigerators, and the evaporators in the freezer mostly use wire tube / plate tube heat exchangers. Generally, there are three to four layers of refrigeration pipelines in the freezer. Excessive frosting in the refrigerator will affect the performance of the refrigerator. Cooling effect, after using for a period of time, a thick layer of frost will form on the evaporator of the freezer. Especially the frost on the outside of the evaporator on the top layer of the freezer, and with the prolongation of the use time, the frost will become more serious, and finally the upper layer of the freezer of the refrigerator will be frozen by the frost layer an...

AI Technical Summary

Problems solved by technology

Mechanical defrosting such as ice shovel / cork removal is laborious, may damage the inner tank or refrigeration pipeline, and is not easy to remove; warm water takes a long time to defrost and requires an additional towel or rag to dry the interior of the freezer, wipe off the purification Frost water, the process is more cumbersome

And the above manual defrosting methods need to be carried out in the case of power failure

[0004] Compared with the automatic defrosting of air-cooled refrigerators, direct-cooled refrigerators cannot automatically defrost. Therefore, the defrosting method of direct-cooled refrigerators is manual defrosting. When to defrost is very subjective and not accurate. Defrost judging conditions, if the defrosting is too late, it is easy to cause the refrigerator to frost too thick, the frost layer is difficult to remove and the defrosting time is too long; if the defrosting is too early, it will cause too frequent defrosting, and it will also cause Utilize lower

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