Cold storage room circulation heat utilization defrosting refrigeration system and control method thereof

Abstract

The invention relates to the field of defrosting and refrigeration control technology of a refrigerator and discloses a refrigerator defrosting and refrigeration system which utilizes circulating heat of a refrigerating chamber. The system comprises a refrigerating chamber (1), a freezing chamber (2), a chamber body (3) of an evaporator, a first air channel (4) for connecting the freezing chamber (2) and the chamber body (3) of the evaporator and a second air channel (5) for connecting the refrigerating chamber (1) and the chamber body (3) of the evaporator; a first fan (M1) is arranged on the first air channel (4); a second fan (M2) is arranged on the second air channel (5); a connecting port between the first air channel (4) and the chamber body (3) of the evaporator is provided with a first electric air door (K1); and an air return port (8) of the refrigerating chamber and an air return port (9) of the freezing chamber are provided with a second electric air door (K2). In addition, the invention also provides a method for controlling the refrigerator defrosting and refrigeration system which utilizes the circulating heat of the refrigerating chamber. The system and the method can effectively reduce energy consumption of the refrigerator.

Description

technical field [0001] The invention relates to the technical field of refrigerator defrosting and refrigeration control, in particular to a refrigerator defrosting and refrigeration control system by utilizing the circulating heat of a refrigerator, and also includes a defrosting and refrigeration control method of the control system. Background technique [0002] Frost-free refrigerators, also known as intercooled refrigerators, use fans to force the cold air to circulate and indirectly refrigerate and freeze food. The water evaporated from the food in the refrigerator is taken away by the cold air. As the water in the box is continuously taken away, the food becomes drier. , Compared with direct-cooling refrigerators, the fresh-keeping ability is getting worse and worse. [0003] In addition, the water taken away by the air-cooled refrigerator freezes on the surface of the evaporator to form a frost layer when passing through the evaporator. The existence of the frost la...

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Problems solved by technology

[0004] All the above-mentioned defrosting methods have additional power consumption of defrosting electric heating wires, and this power consumption accounts for 5% of the total power consumption of refrigerators. According to the current power consumption level and production capacity estimates, China will produce During the expected service life of refrigerators, 601 billion kilowatt-hours of electricity will be consumed, and 5,700 megawatts of power generation capacity will need to be added. Based on this calculation, the power consumed by defrosting will exceed 285 megawatts. For a population of 1.3 billion, energy is becoming increasingly tense For a large country in China, this is indeed not a small number

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