Control method and control device for dual-system refrigerator and refrigerator

Abstract

The invention embodiment provides a control method and a control device for a dual-system refrigerator and a refrigerator, and relates to the technical field of refrigeration. The precision of temperature control of the refrigerator can be improved, so that the energy consumption is reduced and the compartment temperature stability is promoted. The control method for the dual-system refrigerator comprises the steps that the current compartment temperature of each compartment of the refrigerator is detected in the stopped state of a compressor; when the situation that the current compartment temperature of each compartment is greater than or equal to the corresponding pre-starting temperature is determined, the compressor is controlled to be started, and the corresponding compartment is refrigerated by a first evaporator on a current default communicated refrigerating circuit; and the pre-starting temperature of the compartment is lower than a starting temperature of the compartment.

Description

technical field [0001] The invention relates to the refrigeration field of refrigerators, in particular to a control method and a control device for a dual-system refrigerator and the refrigerator. Background technique [0002] At present, a dual-system refrigerator usually includes a compressor, and the compressor is connected to the refrigerating circuit and the freezing circuit through the condenser. Of course, evaporators are respectively installed on the refrigerating circuit and the refrigerating circuit. For air-cooled refrigerators, the evaporator needs a corresponding fan Provide cold energy to the corresponding compartment through the air duct. Among them, in the refrigerating and cooling mode, the compressor is switched to communicate with the refrigerating circuit, and the refrigerating room is refrigerated by the evaporator corresponding to the refrigerating room on the refrigerating circuit; To communicate with the freezing circuit, and to cool the freezing co...

AI Technical Summary

Problems solved by technology

[0003] However, affected by the external temperature or defrosting, there may be a situation where the freezer compartment and the refrigerated compartment have cooling demands at the same time, or the time interval between the freezer compartment and the refrigerated compartment starting to have freezing demands is relatively short, that is: the refrigerated compartment And the measured temperature of the freezer compartment meets the respective start-up temperature at the same time, or the measured temperature of the freezer compartment also meets the start-up temperature within a short time interval after the measured temperature of the refrigerated compartment meets the start-up temperature of the refrigerated compartment, and This very short time interval is not enough to cool the refrigerated compartment to meet the shutdown temperature of the refrigerated compartment, or the measured temperature of the refrigerated compartment meets the start-up temperature of the refrigerated compartment within a short period of time after the measured temperature of the refrigerated compartment meets the start-up temperature , and this very short time interval is not enough to cool the freezer compartment to meet the shutdown temperature of the freezer compartment; the design of the prior art has not considered this situation, if the refrigerator is continued to be controlled according to the prior art, then in When the first room is cooling, the measured temperature of the second room that has reached the start-up temperature will continue to rise due to failure to cool in time. When the second room is cooling, the compressor needs to be ramped up to generate enough cooling so that the second room will reach shutdown temperature quickly

Since the cooling time of the second chamber is short enough, the first chamber will heat up during the period but may not reach the starting temperature, thus temporarily causing the compressor to stop

Afterwards, the temperature of the two compartments rises at the same time to meet the cooling demand. In such a cycle, the frequency of the compressor will increase and decrease frequently, and one of the two compartments will not be able to cool in time when it reaches its starting temperature, thereby reducing the Temperature control accuracy increases energy consumption and is not conducive to room temperature stability

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