Air-cooled refrigerator and control method thereof

Abstract

The invention discloses an air-cooled refrigerator and a control method thereof. The air-cooled refrigerator comprises a refrigerating chamber; a low humidity area, a high humidity area and a middle humidity area which are independent of one another are arranged inside the refrigerating chamber; a cold storage refrigeration circulation system comprises a refrigeration evaporator, a refrigeration draught fan, a middle humidity area air supply duct, a low humidity area air supply duct, a high humidity area air supply duct and an air return duct; under the action of the refrigeration draught fan, cold air in an evaporator cavity passes the middle humidity area, the low humidity area and the high humidity area corresponding to the middle humidity area air supply duct, the low humidity area air supply duct and the high humidity area air supply duct in a one-to-one mode; a low humidity area ventilation door and a high humidity area ventilation door are arranged inside the low humidity area air supply duct and the high humidity area air supply duct correspondingly; an air return inlet is formed in the back portion of the high humidity area; and a control board is arranged on the refrigerator. The air-cooled refrigerator and the control method thereof have the advantages that three humidity gradients are achieved for the refrigerating chamber, three areas meet the storage requirements of all food and are independent of one another, and food are not mutually affected.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to an air-cooled refrigerator and a control method thereof. Background technique [0002] At present, the air-cooled refrigerators on the market have the function of dry and wet partitions. The main principle is to use the dehumidification effect of the air circulation of the air-cooled refrigerator itself. Through simple control, an area is divided into dry areas. The relative humidity is generally below 45%. It is used to store dried fruits and dry goods, etc.; the other area is used to store fruits, vegetables, etc., so that the relative humidity of this area can be kept above 95% through the combination of a sealed cover and a moisture-permeable membrane. [0003] This technology has several disadvantages. First, the wet area is regulated by a moisturizing film, and the residual heat of respiration after fruits and vegetables are put in will easily cause severe c...

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Problems solved by technology

[0003] This technology has several disadvantages. First, the wet area is regulated by a moisturizing film, and the residual heat of respiration after fruits and vegetables are put in will easily cause serious condensation in the wet area.

2. If the wet area is left unattended for a long time, harmful gases such as ripening gas will easily accumulate. 3. Dual-system air-cooled refrigerators generally do not have a defrosting heater in the refrigerator. In order to increase the reliability of system defrosting, rely on each refrigeration unit. The natural defrosting when the cooling cycle is stopped will defrost the evaporator, and the natural defrosting will keep the internal humidity of the refrigerator at about 65%, and contribute to energy consumption, which makes it difficult to achieve a low-humidity area in a dual-system refrigerator

In order to achieve low humidity, some products cancel the natural defrosting, which increases energy consumption, reduces the reliability of defrosting, and the humidity of the entire refrigerator room is also very low (about 30%), which is not conducive to the performance of the whole machine and other ingredients preservation of

4. Too many sensors increase the cost of the refrigerator. The characteristics of the humidity sensor determine that its package cannot be 100% sealed. When the user uses the refrigerator, if too much water enters the sensor, it will affect its accuracy.

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