Circulating defrosting system, refrigerator and defrosting method

Abstract

The invention discloses a circulating defrosting system which comprises a compressor, an evaporator, a condenser, a heat accumulator and a defrosting circulating pipeline. An inlet of the compressor is connected with an outlet of the evaporator. An inlet of the evaporator is connected with an outlet of the condenser through a capillary pipe. An inlet of the condenser is connected with a heat accumulating outlet of the heat accumulator. A heat accumulating inlet of the heat accumulator is connected with an outlet of the compressor. A heat releasing inlet of the heat accumulator is connected with an outlet of the defrosting circulating pipeline. A heat releasing outlet of the heat accumulator is connected with an inlet of the defrosting circulating pipeline. A water pump is arranged on a pipeline connecting the defrosting circulating pipeline and the heat releasing outlet. A normally-closed valve is arranged on a pipeline connecting the defrosting circulating pipeline and the heat releasing inlet. The defrosting circulating pipeline is attached to the outer side of a pipeline of the evaporator. The invention further provides a refrigerator and a defrosting method. By means of the circulating defrosting system, the refrigerator and the defrosting method, defrosting energy consumption can be lowered, defrosting time is short, and the influence on the temperature fluctuation of refrigerator chambers during defrosting is small.

Description

technical field [0001] The invention relates to the field of defrosting refrigerators, in particular to a cycle defrosting system, a refrigerator and a defrosting method. Background technique [0002] It is understood that most of the water vapor comes from the air. When people store food and open the refrigerator, the indoor air and the gas in the refrigerator exchange freely, and the humid air in the room quietly enters the refrigerator. Another part of the water vapor comes from the food stored in the refrigerator, such as cleaned vegetables and fruits in fresh-keeping boxes. The water in vegetables and other food evaporates and condenses into frost when it is cold. [0003] Such as figure 1 As shown, the existing electric heating defrost device 9 is heated outside the evaporator 5, and the frost layer is melted by radiation and natural convection, the efficiency is low, the power consumption is too large, and the frost layer does not fall off often, and the defrost laye...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 As shown, the existing electric heating defrost device 9 is heated outside the evaporator 5, and the frost layer is melted by radiation and natural convection, the efficiency is low, the power consumption is too large, and the frost layer does not fall off often, and the defrost layer is melted. The frosting time is long, and the defrosting period has a great influence on the temperature fluctuation in the compartment

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