Three-door multi-temperature zone refrigeration system with quick-freezing function, refrigerator and control method thereof

Abstract

Disclosed are a three-door multi-temperature-zone refrigeration system with the rapid-freezing function and a refrigerator with the same and a control method thereof. The three-door multi-temperature-zone refrigeration system comprises a compressor, a condenser and a drier and filter; the condenser and the drier and filter are connected with an outlet of the compressor in turn; an outlet of the drier and filer is divided into two branches, wherein one branch is connected with a cut-off electromagnetic valve, a refrigeration capillary tube and a refrigeration evaporator in turn and the other branch is connected with an inlet of a bi-stable electromagnetic valve; one outlet of the bi-stable electromagnetic valve is connected with a rapid-freezing capillary tube and a rapid-freezing evaporator in turn and the other outlet of the bi-stable electromagnetic valve is connected with a wide temperate zone capillary tube and a wide temperate zone evaporator in turn; the rapid-freezing evaporator and the wide temperate zone evaporator are connected with a freezing evaporator after being in parallel connection with each other; the refrigeration evaporator and the freezing evaporator are connected with the compressor after being in parallel connection with each other. The invention also discloses the refrigerator with the three-door multi-temperature-zone refrigeration system and the control method thereof. The refrigerator is a multi-temperature-zone refrigerator with the rapid-freezing function and accordingly the relative independence of chambers is implemented, the requirements of the different chambers for the refrigerating capacity can be met, and the problems that the irreversible loss of the refrigeration chamber is large and the start-stop of the compressor is frequent, and the like are solved.

Description

technical field [0001] The invention relates to the technical field of refrigerators, in particular to a three-door multi-temperature zone refrigeration system with quick-freezing function, a refrigerator and a control method thereof. Background technique [0002] Different foods have different optimal storage temperatures. Only by storing at the optimal temperature can the nutrition of the food be preserved to the maximum extent. Therefore, with the improvement of people's living standards, refrigerators with two temperature zones or even three temperature zones cannot meet people's needs, but refrigerators with more temperature zones. These temperature zones include the quick-freezing functional zone (below -24°C) that allows food to quickly pass through the ice crystal zone and reduce nutrient loss, the freezing zone (below -18°C) that is suitable for long-term storage of pork and beef, and the freezing zone that is suitable for cold drinks (-10℃~-12℃), the soft freezing...

AI Technical Summary

Problems solved by technology

[0003] The refrigeration system of the existing multi-temperature zone refrigerator is mainly a three-way capillary refrigeration circuit. By using two bistable solenoid valves to control the opening and closing of the three-way capillary, each room of the refrigerator is refrigerated, thereby obtaining a three-temperature cooling system. zone or four-temperature zone, and does not have quick-freezing function, which cannot meet consumers' needs for multi-temperature zone and refrigerators with quick-freezing function

[0004] The various compartments of the refrigeration system of the existing multi-temperature zone refrigerator are independent of each other, resulting in frequent start and stop of the compressor, high power consumption of the refrigeration system, shortened life of the compressor, and frequent migration of refrigerants leading to a decline in the performance of the refrigeration system

[0005] The evaporation temperature of the existing multi-temperature refrigerator refrigerator is about -30°C. On the one hand, it is limited by the series connection of the refrigerator and the freezer in the refrigeration system. On the other hand, if the evaporation temperature of the refrigerator is high, the length of the capillary is short, The large flow rate of refrigerant can easily cause condensation in the return air pipe and liquid shock of the compressor. Therefore, in practical applications, the evaporation temperature of the refrigerator's cold room is very low, resulting in a large irreversible loss of cooling capacity.

Images