Air-cooled refrigerator

Abstract

The invention relates to an air-cooled refrigerator. The air-cooled refrigerator comprises a refrigerator body, an evaporator, an air return duct assembly and a cooling air duct assembly, wherein an evaporator chamber and a refrigerating chamber are defined in the refrigerator body; the evaporator is arranged in the evaporator chamber and is configured to cool air flow flowing through the evaporator so as to form cooling air flow; the air return duct assembly is configured to guide the air flow in the refrigerating chamber to the evaporator; and the cooling air duct assembly is configured to cool the air return duct assembly through heat exchange by means of the cooling air flow flowing through the cooling air duct assembly. By arranging the cooling air duct assembly, the cooling air flow discharged by the evaporator flows through the cooling air duct assembly so as to cool the air return duct assembly through heat exchange, so that return air is cooled, the internal temperature of an air return duct is below the dew point temperature, air with high humidity recovered from the refrigerating chamber is condensed in the air return duct, the humidity of the air in the air return duct is reduced, the frosting rate of water vapor on the evaporator is reduced, the defrosting cycle time is prolonged, the defrosting frequency is reduced, the energy consumption of the refrigerator is reduced, and the use cost of a user is reduced.

Description

technical field [0001] The present disclosure relates to an air-cooled refrigerator. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Current refrigerators are generally divided into air-cooled refrigerators and direct-cooled refrigerators according to different cooling methods. Compared with direct-cooling refrigerators, air-cooling refrigerators have obvious advantages, such as small temperature fluctuations, higher temperature uniformity, and no need for manual defrosting. Therefore, the market share of air-cooling refrigerators is increasing. But in its refrigeration process, the air in the compartment passes through the low-temperature evaporator, and the water vapor in the air condenses into frost on the evaporator. [0004] At present, the air-cooled refrigerator has an automatic defrosting function, mainly through the heating tube or hea...

AI Technical Summary

Problems solved by technology

And through the sensor and the control board, the heater is automatically turned on to realize automatic defrosting after a fixed defrosting cycle or when the temperature of the compartment is detected to reach a certain level, and this kind of heating through the heating tube through the strong current increases the energy consumption of the refrigerator, At present, more energy-saving methods are mainly to control the start and stop of the heater through more accurate calculation of the defrosting cycle algorithm or induction method to reduce unnecessary defrosting process, but it will still generate additional energy consumption.

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