Single-system air-cooled refrigerator

Abstract

The invention discloses a single-system air-cooled refrigerator. The single-system air-cooled refrigerator comprises at least one refrigeration compartment, an evaporator, an air supply duct, an air return duct, at least one heat exchange piece set and an air return heat exchange piece set, wherein the heat exchange piece set comprises two independently-arranged air supply heat exchange pieces and an air supply heat pipe connected with the two air supply heat exchange pieces, and the air supply heat pipe is used for achieving heat transfer between the two air supply heat exchange pieces; one of the air supply heat exchange piece is arranged in the air supply duct; the other air supply heat exchange piece is arranged in the refrigeration compartment or close to the evaporator; the air return heat exchange piece set comprises two independently-arranged air return heat exchange pieces and an air return heat pipe connected with the two air return heat exchange pieces, and the air return heat pipe is used for achieving heat transfer between the two air return heat exchange pieces; one of the air return heat exchange piece is arranged in the air return duct; and the other air return heat exchange piece is arranged in the refrigeration compartment or close to the evaporator. The single-system air-cooled refrigerator is low in cost and ensures that the refrigeration compartment has the better refrigerating effect.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a single-system air-cooled refrigerator. 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 independent freezers and refrigerators for separate storage according to different storage temperatures. 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] Compared with direct-cooling refrigerators, air-cooled refrigerators hav...

AI Technical Summary

Problems solved by technology

For single-system air-cooled refrigerators, the refrigerating room and the freezing room share an evaporator. , under normal circumstances, the distribution ratio of the air volume blowing to the refrigerated compartment and the freezer compartment is not easy to control, and it is more difficult to achieve the ideal situation due to the change of the ambient temperature and the gear position

[0004] If the single-system air-cooled refrigerator wants to achieve a small temperature difference between the compartments, it needs a certain amount of air volume. When the refrigerator compartment and the freezer compartment are both turned on for cooling, the temperature of the refrigerator compartment is much higher than that of the freezer compartment. When the air temperature in the storage room is low, the temperature of the refrigerating room drops rapidly, while the temperature of the freezing room not only does not drop, but rises instead, resulting in large fluctuations in the temperature of the freezing room.

[0005] For single-system air-cooled refrigerators, in order to reduce the temperature difference between the refrigerated compartment and the frozen compartment in the prior art, the currently adopted scheme is mainly the micro-air duct method, that is, an air duct is divided into multiple layers, and a temperature sensor is installed on each layer to It is used to monitor the temperature change of each layer, and then control the cooling capacity of the source. However, in this way, the cost of the refrigeration air duct will be significantly increased. The temperature fluctuation problem of

[0006] The second prior art adopts frequency conversion fan, and by using frequency conversion compressor and its control system, the temperature fluctuation of the refrigerating room can be reduced, but the temperature fluctuation is not in the ideal range, and the cost of frequency conversion compressor and frequency conversion control system is very high

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