Refrigerator

Abstract

The invention provides a refrigerator. The refrigerator comprises storage rooms and an evaporator used for providing a cooling capacity for the storage rooms. The refrigerator further comprises a liquid storage device, a defrosting box, a liquid inlet pipeline, a heating device and a liquid returning pipeline. Defrosting liquid is contained in the liquid storage device. An inner cavity with an upward opening is defined by the defrosting box, and the evaporator is arranged in the inner cavity of the defrosting box. The liquid inlet pipeline is arranged to guide the defrosting liquid in the liquid storage device to the portion above the evaporator so as to spray the evaporator. The heating device is arranged on the liquid inlet pipeline and arranged to heat the defrosting liquid flowing through the liquid inlet pipeline. The liquid returning pipeline communicates with the inner cavity of the defrosting box and is arranged to convey the defrosting liquid in the defrosting box back to the liquid storage device. Compared with the prior art that a heating device is utilized for heating surrounding air to conduct baking type defrosting on an evaporator through hot air, the defrosting liquid and the evaporator can be subjected to sufficient heat exchange through the defrosting manner, a better heat exchange effect is achieved, accordingly, the defrosting efficiency is improved, and the energy consumption can be reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator. Background technique [0002] After a period of use of the direct cooling refrigerator, there will be frosting in the compartment inside the refrigerator. The intercooling refrigerator solves the problem of frosting in the refrigerator very well, but the surface of the evaporator will frost after the intercooling refrigerator (that is, the air-cooled refrigerator) is used for a period of time. As the amount of frost on the evaporator increases, the refrigeration efficiency of the refrigerator will decrease, which will affect the stability of the temperature in the refrigerator compartment. It is necessary to stop the compressor regularly to defrost the evaporator. At present, the refrigerator usually adopts a defrosting heater to periodically melt the frost on the evaporator by means of electric heating. The main disadvantage of this defrosting m...

AI Technical Summary

Problems solved by technology

The main disadvantage of this defrosting method is that during the defrosting process, the heat generated by the defrosting heater will increase the temperature inside the freezer compartment; when the evaporator is defrosted, the compressor will work again to cool down the freezer compartment , its workload becomes larger

And because the heat generated by the defrosting heater is not efficiently used, it leads to high power consumption for defrosting, low heating and defrosting efficiency, long defrosting time, and fire hazards.

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