Frostless refrigerator with circulation wind defrosting function and control method thereof

Abstract

The invention relates to the technical field of refrigerators in the electrical appliances, in particular to a frostless refrigerator with a circulation wind defrosting function and a control method thereof. The frostless refrigerator with the circulation wind defrosting function comprises a cold chamber, a cold chamber temperature sensor arranged on the side wall of the cold chamber, a fan motor arranged at the back of the cold chamber, an evaporator arranged at the bottom of the fan motor, a defrosting temperature sensor arranged on an air inlet tube at the top of the evaporator, and a cold chamber return air inlet at the bottom of the evaporator, wherein a defrosting heater is arranged between the bottom of the evaporator and the cold chamber return air inlet; a cold air supply inlet is formed in the back of the cold chamber; a display used for adjusting temperature is arranged on a refrigerator door body. Through utilizing the temperature difference between the evaporator and the cold chamber when the refrigerator stops working, the residue cold of the evaporator can be utilized to refrigerate the cold chamber; high-temperature air in the cold chamber can be utilized to defrost the evaporator.

Description

technical field [0001] The invention relates to the technical field of refrigerators in electrical equipment, and more particularly, to a frost-free refrigerator with circulating weathering frost and a control method thereof. Background technique [0002] For a frost-free refrigerator with circulating weathering, it generally means that the fan motor of the refrigerator will force the cold air generated by the evaporator to cool down the functional compartments such as refrigeration and freezing when the refrigerator compressor is cooling. It is also because the fan motor of the refrigerator uses the high-temperature gas in the refrigerator to scrub the frost layer on the evaporator when the compressor is shut down. Therefore, the frost-free electric frost with circulating weathering frost has multiple functions: First, because the temperature of the refrigerator is generally [2°C~8°C], and the temperature of the evaporator of the refrigerator is generally below 0°C when the...

AI Technical Summary

Problems solved by technology

If the refrigerated temperature is 2°C, the temperature requirement of the refrigerating room is lower than that of the evaporator, and the circulating defrosting cannot effectively use the residual cold of the evaporator to cool the compartment, and the temperature of the refrigerating room may be difficult. achieve

Limits the adjustment range of the refrigerator temperature

[0004] 2. If there is no boundary balance point between the fan power consumption and the evaporator residual cooling for cooling during the cycle defrosting process, the power consumed by the fan operation may be greater than the cooling effect brought by the evaporator residual cooling, resulting in power consumption The amount increases, it is difficult to achieve the expected effect

[0005] 3. If it is an air-cooled refrigerator, for the convenience of control, one or more dampers may be used, resulting in complicated control of the refrigerator, increased cost, and reduced product competitiveness.

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