Refrigerator

Abstract

The invention provides a refrigerator which comprises a refrigerator box, wherein a cooling chamber and a return air duct are arranged in the refrigerator box; a cooler is equipped in the cooling chamber; the cooling chamber is provided with a first return air inlet and a second return air inlet; the first return air inlet communicates to the upstream of the cooler in the flow direction of gas in the cooling chamber; the second return air inlet communicates to the downstream of the cooler in the flow direction of gas in the cooling chamber; the return air duct communicates to the first return air inlet and the second return air inlet; and the cooling chamber and the return air duct are arranged in the following manner: at least part of gas in the return air duct is allowed to enter the cooling chamber to flow through the cooler from the first return air inlet, is allowed to enter the cooling chamber to bypass the cooler from the second return air inlet, and is mixed with gas flowing through the cooler at the downstream of the cooler. As the special structure of the cooling chamber, part of gas for circulation is enabled not to be cooled by the cooler, at least part of moisture in a refrigeration chamber is prevented from frosting on the cooler while refrigeration is carried out, and frost quantity on the cooler is reduced.

Description

technical field [0001] The invention relates to the technical field of freezing and refrigeration, in particular to a refrigerator. Background technique [0002] The ultimate purpose of using a refrigerator is to keep food fresh, prolong food storage time, and improve food safety. Therefore, the freshness preservation performance of the refrigerator is the standard function of the refrigerator. But for fresh vegetables and other ingredients, humidity is the key factor that directly affects freshness preservation performance after temperature. Existing air-cooled refrigerators generally include a freezer compartment located below, a refrigerator compartment located above, and a circulating air duct. The circulating air flow used in the refrigerating room generally leads from the air outlet of the refrigerating room to the bottom of the evaporator, and the return air of the refrigerating room passes through the fins of the evaporator to be cooled by the evaporator, and then b...

AI Technical Summary

Problems solved by technology

More and more frost has seriously affected the heat transfer of the evaporator and reduced the operating efficiency of the refrigerator. Therefore, the current air-cooled refrigerator has to be shut down to defrost after running for a period of time. The frequent shutdown of the refrigerator greatly increases the energy consumption.

[0003] In addition, when the air refrigerated and frozen by the evaporator is blown into the refrigerator again, the air is already relatively dry due to being cooled and dehumidified by the evaporator. When it is sent into the refrigerator, the humidity in the refrigerator will be very low, which will affect the preservation Dehydrated and air-dried food is very detrimental to food preservation

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