Constant-temperature refrigerator and control method thereof

Abstract

The invention discloses a constant-temperature refrigerator. The constant-temperature refrigerator comprises a refrigerator body, an evaporator, a second air flue and a fan, wherein at least one refrigeration chamber is limited in the refrigerator body; a first air flue in fluid communication with the at least one refrigeration chamber is arranged on one side of the at least one refrigeration chamber; the evaporator is arranged in an evaporator cavity of the refrigerator body; the evaporator cavity is positioned at the back part of the at least one refrigeration chamber; the second air flue is arranged at the back part of the first air flue, and is communicated with the evaporator cavity; the fan can lead air from the evaporator into the first air flue so as to refrigerate the at least one refrigeration chamber, and also can enable the air to circulate between the second air flue and the evaporator cavity; and a fan shielding device is arranged between the first air flue and the fan, and is opened or closed to allow or limit air currents from the fan to enter the first air flue. The invention further relates to a control method of the constant-temperature refrigerator. The constant-temperature refrigerator is high in defrosting efficiency and low in temperature fluctuation of the refrigeration chamber.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a constant temperature refrigerator and a control method thereof. Background technique [0002] In the prior art, refrigerators generally refer to single-door, double-door, double-temperature, three-door, three-temperature, and cabinet-type multi-door refrigerators, which generally have an independent freezer and outer door of the freezer, so that they can be separated according to different storage temperatures. store. The refrigeration principle of this refrigerator-freezer is divided into direct cooling and air cooling. Direct-cooling refrigeration systems often use solenoid valves to control the flow of refrigerant, and supply refrigerant to the evaporators of each refrigerating (freezing) room to cool each space to the required temperature. Air-cooled refrigerators and freezers need to set up corresponding air ducts to supply air to each space. [0003] The constant te...

AI Technical Summary

Problems solved by technology

[0004] At present, the refrigerator is heated by the heating wire when defrosting, and the temperature in the evaporator cavity rises, resulting in large temperature fluctuations in the refrigeration compartment.

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