Refrigerator and its control method

Abstract

A refrigerator features that it has a cold storatge chamber and a freezing chamber, which work individually. The first and the second evaporators are arranged respectively for said both chambers and can be selectively communicated with refrigerant loop under the control of three-way electromagnetic valve. The temp of each chamber can be controlled to be -36- +10 deg.C. Its control method may be temp-based switching or time-based switching according to preferably principle. Its advantages are use of a single compression-circulating refrigerating system, and saving energy.

Description

Technical field [0001] The present invention relates to refrigerator technology, and more specifically, to a refrigerator having two cold compartments of refrigeration and freezing and independently working independently and a control method thereof. Background technique [0002] The traditional double-door refrigerator has two cold rooms, namely, the refrigerating room and the freezing room. The two cold rooms are cooled by the same refrigeration cycle. The compressor in the refrigeration cycle system is controlled by a temperature sensor installed in the refrigerating room. Closed, when the temperature of the refrigerating compartment is higher than a certain set value, the compressor starts, the refrigerating evaporator and the freezing evaporator work at the same time, and refrigerating at the same time; when the temperature is lower than a certain set value, the compressor closes and the refrigerating evaporator And the freezing evaporator stops working at the same time. It ...

AI Technical Summary

Problems solved by technology

Although refrigerators that can separately control refrigeration and freezing have also appeared on the market, these refrigerators use two sets of separate refrigeration systems, that is, two compressors, two evaporators, two condensers and two sets of economizers. The flow device is used to cool the refrigerator and freezer separately. The production cost of such a refrigerator is too high. Compared with two refrigerators, they only share one shell and there is no difference.

Chinese utility model patent 91220687.X proposes "a refrigerator with interchangeable freezer and freezer compartments", and proposes a technical solution of adding a group of evaporators in the freezer compartment and setting a temperature controller to control the solenoid valve in each cold compartment , because the collection and storage of refrigerant under different working conditions are not solved, and the distribution control of the specific flow direction and flow of refrigerant is not solved, so that the compressor may have liquid shock phenomenon or cannot be interchanged

This type of prior art does not consider the refrigerant switching control strategy under different working conditions, making it difficult for this kind of refrigerator to have commercial application prospects

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