Control method of refrigerator

Abstract

The invention provides a control method of a refrigerator. Comprising the steps that when a first evaporation part works and a second evaporation part does not work, a second control valve is in a state of disconnecting a box body side air return pipeline, and a first control valve is in a state of disconnecting a pipeline between a condensing device and the second evaporation part; whether a refrigerant used when the first evaporation part works is in shortage or not is judged; and if the refrigerant used when the first evaporation part works is insufficient, the second control valve is opened for a first preset time. Frequent migration of refrigerants is prevented, and the ice making efficiency and the overall energy efficiency of the refrigerator are improved.

Description

technical field [0001] The invention relates to the technical field of freezing and refrigerating storage, in particular to a method for controlling a refrigerator. Background technique [0002] At present, the market demand for realizing the ice-making function on the door body is relatively strong. The inventor found that to realize cooling in the refrigerator door space, the common way is to send cold air from the refrigerator box into the door body, but the defect of this method is that the space in the door body and the space in the box body have odors, which brings a lot of inconvenience to the user. to great trouble. There is also a way to send cold air from the refrigerator box to the ice space of the door body. In addition to causing the ice produced by the door body to have the taste of the ingredients in the refrigerator, it is often necessary to send cold air from the freezer evaporator through a long air duct into the door body. (especially the refrigerator do...

AI Technical Summary

Problems solved by technology

There is also a way to send cold air from the refrigerator box to the ice space of the door body. In addition to causing the ice produced by the door body to have the taste of the ingredients in the refrigerator, it is often necessary to send cold air from the freezer evaporator through a long air duct into the door body. (especially the refrigerated door body), the air supply resistance and the loss of cooling capacity are large (the air duct is often buried in the insulation layer of the box body), resulting in low cooling efficiency

For example, when making ice or refrigerating water on the door body of the refrigerator, or when setting up an independent cooling compartment on the door body, the existing technology (such as LG) usually provides the door with an air duct that communicates with an evaporator in the cabinet. The body provides cooling capacity, but the air ducts are long, and the installation in the insulation layer of the box affects the insulation effect of the box. At the same time, the resistance of the air duct is large, resulting in low cooling efficiency.

There is another technology (such as South Korea's Daewoo), which leads the low-temperature refrigerant of the evaporator in the box directly to the door body through a hose, but the corresponding pipeline needs to be kept warm before it is drawn out from the box body and enters the door body, resulting in a very long pipeline. It is thick and takes up space, and the aesthetics are greatly reduced. At the same time, it is difficult to ensure the consistency of the pipeline insulation effect of different refrigerators

There is another technology (such as Midea), which uses a flexible capillary to guide the refrigerant from the box to the door, but on the refrigerator, in order to play the throttling effect of the capillary, the inner diameter of the capillary should be ≤0.8mm, and the flexible inner diameter of this kind Capillary, the diameter of the capillary is easily deformed when opening and closing the door, and a slight change in the inner diameter of the capillary will lead to deviations in refrigeration performance and poor consistency; in addition, the tolerance of the inner and outer diameters of the flexible tube within 5mm (outer diameter) is usually ±0.1mm, while the capillary It plays a throttling role on the refrigerator and is an important part of the four major parts of the refrigeration system. Its flow accuracy is extremely high, and the error of the inner diameter of ±0.1mm can cause great differences in flow or performance. It is difficult to achieve mass production and poor control consistency.

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