Defrosting energy consumption control method and system for double-system refrigerator as well as refrigerator

Abstract

The invention relates to a defrosting energy consumption control method and system for a double-system refrigerator as well as the refrigerator. The method comprises the following steps: starting a compressor by delaying t1 time after a defrosting process is ended; firstly running in a freezing mode for t2 time after starting while closing a variable-temperature air door; running in a refrigerating mode for t3 time; switching on a freezing evaporator through switching of an electronic three-way valve, and opening the variable-temperature air door until the temperature of a variable-temperature chamber reaches a preset variable temperature; closing the variable-temperature air door until the temperature of a freezing chamber is cooled to a preset freezing temperature; switching on a refrigerating evaporator through switching of the electronic three-way valve until a refrigerating temperature is reduced to a preset refrigerating temperature; and ending defrosting and recovering control. According to the defrosting energy consumption control method, refrigerating capacity is reasonably distributed between the refrigerating evaporator and the freezing evaporator in a manner of controlling a solenoid valve to switch and controlling the variable-temperature air door to open and close by integrating time with the temperature at a defrosting recovery stage, so that great temperature rise of a refrigerating chamber temperature, a freezing chamber temperature and a viable-temperature chamber temperature is prevented, time for enabling refrigerating and freezing to recover balance is reduced, and power consumption during a recovery period is reduced.

Description

technical field [0001] The invention relates to the technical field of refrigerators, in particular to a method, a system and a refrigerator for controlling energy consumption of defrosting of a dual-system refrigerator. Background technique [0002] figure 1 It is the structural diagram of the current dual-system refrigerator, figure 2 It is a schematic diagram of the current dual-system refrigerator refrigeration system. The refrigerating evaporator only provides cooling for the refrigerating room, and the freezing evaporator supplies cooling for the freezing and variable room. Among them, when the compressor is running, the electronic three-way valve is switched to connect the refrigerating or freezing evaporator to complete the system to provide cooling for the refrigerating or freezing room. Whether the variable room is refrigerated is controlled by the variable temperature damper switch. Refrigeration and freezing evaporators are not switched on. [0003] During th...

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Problems solved by technology

[0004] After defrosting, with the inflow of a large amount of hot air, the temperature of the three compartments will obviously deviate from the normal temperature level (the temperature of the refrigerator compartment is generally in the range of 0-10°C during the stable operation of the refrigerator, and the temperature of the variable room is generally -15-5°C between, and the freezer is lower than the -18°C interval, the heat load of the three is quite different), the cooling in the recovery period after defrosting is obviously out of sync, the recovery period takes a long time, and the energy consumption increases

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