Refrigerator and air duct system

Abstract

The invention provides a refrigerator and an air duct system. A storage chamber is arranged in the refrigerator, wherein the air duct system is arranged on an air duct foam plate of the refrigerator, and comprises a main air duct, a secondary air duct, a control air door and an air-tight door body; the main air duct is communicated with an air supply outlet of a refrigerating fan of the refrigerator; the secondary air duct is communicated with the main air duct; an air outlet is formed in the secondary air duct, and is communicated with the storage chamber; the control air door is arranged in the secondary air duct, and is used for adjusting the air outlet area of the air outlet; the air-tight door body is arranged in the secondary air duct and is capable of blocking off communication between the main air duct and the secondary air duct. According to the air duct system provided by the invention, when a user does not need to preserve food by virtue of the storage chamber, the air-tight door body can block off the communication between the main air duct and the secondary air duct, so that cold air is prevented from entering the storage chamber through the secondary air duct; the used energy consumption of a product is reduced; and meanwhile, the cold air can be prevented from contacting the control air door. Therefore, the frozen condition of the control air door is avoided; and the use reliability of the control air door is ensured.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a refrigerator and an air duct system thereof. Background technique [0002] At present, the variable temperature air duct and the refrigerating air duct of the existing refrigerator are respectively provided with a variable temperature damper and a refrigerating damper, and the temperature of the variable temperature chamber and the refrigerating chamber can be adjusted by separately controlling the opening of the variable temperature damper and the refrigerating damper. However, the existing temperature variable damper Although the air door and the refrigeration air door have the performance of adjustable opening, they cannot completely block the air circulation between the variable temperature air duct and the variable room or between the refrigerated air duct and the cold room. Taking the variable temperature room as an example, when the ambient temperature is lower than or...

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Problems solved by technology

[0002] At present, the variable temperature air duct and the refrigerating air duct of the existing refrigerator are respectively provided with a variable temperature damper and a refrigerating damper, and the temperature of the variable temperature chamber and the refrigerating chamber can be adjusted by separately controlling the opening of the variable temperature damper and the refrigerating damper. However, the existing temperature variable damper Although the air door and the refrigeration air door have the performance of adjustable opening, they cannot completely block the air circulation between the variable temperature air duct and the variable room or between the refrigerated air duct and the cold room. Taking the variable temperature room as an example, when the ambient temperature is lower than or It is equal to the temperature inside the temperature-changing room, and the user does not need to use the temperature-changing room to preserve food. Although the temperature-changing damper can be completely closed to reduce the energy consumption of the product, the test shows that the temperature-changing room is still below zero. On the one hand, it is not conducive to the realization of energy-saving and emission reduction goals of the product. On the other hand, the temperature-variable damper is exposed to direct cold wind for a long time, which may easily cause the temperature-variable damper to freeze, thereby reducing the reliability of the temperature-variable damper in terms of adjustment functions, and at the same time, it is easy to reduce The use intensity of variable temperature damper reduces the quality of the product

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