Refrigerator

Abstract

The invention discloses a refrigerator which comprises a refrigerator body, an evaporator, a middle air channel, a heat source and a cold air self evaporator. A refrigerating chamber and a freezing chamber are defined in the refrigerator body. One side of the refrigerating chamber is provided with a refrigerating air input channel communicated with fluid of the refrigerating chamber, and one side of the freezing chamber is provided with a freezing air input channel communicated with fluid of the freezing chamber. The evaporator is arranged in an evaporator cavity in the rear portion of the freezing chamber. The freezing air input channel is communicated with fluid of the evaporator cavity. The middle air channel is formed between the refrigerating air input channel and the freezing air input channel and selectively communicated with the fluid of the refrigerating air input channel and the fluid of the freezing air input channel. The middle air channel comprises a first air path and a second air path which are arranged side by side. The heat source is arranged in the second air path. The cold air self evaporator can selectively enter the first air path and / or the second air path through the freezing air input channel and then enter the refrigerating air input channel. The refrigerator can achieve multiple air supply modes of the refrigerating chamber and meet the different requirements of users.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a 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 an independent freezer and outer door of the freezer, so that they can be separated according to different storage temperatures. store. 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] With the improvement of people's living standards, people put for...

AI Technical Summary

Problems solved by technology

[0003] With the improvement of people's living standards, people put forward higher requirements for refrigerators, such as: to make refrigerators more suitable for cold storage of various foods, because the preservation of food (such as vegetables, fruits, etc.) is quite sensitive to temperature fluctuations , especially for food preservation in the refrigerated temperature zone, temperature fluctuations will drive humidity changes, and the water evaporated from the food will continue to be lost in the form of refrigerated condensation water, which will greatly shorten the food preservation cycle

Therefore, it is necessary for the refrigerator to have constant temperature and constant humidity (high humidity) functions. However, no matter it is a direct-cooled or air-cooled refrigerator, the relative humidity of the refrigerator is relatively low, and the temperature fluctuates greatly. The control system can reduce the temperature fluctuation of the refrigerator, but the temperature fluctuation is not in the ideal range, and the cost of the inverter compressor and the inverter control system is very high

[0004] In addition, the food refrigerated in the refrigerator is different, and the user cannot choose the air supply temperature of the refrigerator, and the temperature difference between the air supply temperature of the refrigerator and the refrigeration temperature of the refrigerator is large, which may frostbite the fruits and vegetables in the refrigerator

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