Large freezing ability energy-saving refrigerating system and control method thereof

Abstract

Provided is a large refrigerating capacity energy-saving refrigerating system and a control method of the large refrigerating capacity energy-saving refrigerating system. The large refrigerating capacity energy-saving refrigerating system comprises a first refrigerating return circuit, namely a refrigerating module, and a second refrigerating return circuit, namely a quick-freezing module, wherein switchover of a three-way reversing valve is controlled by the first refrigerating return circuit through a logical controller, the first refrigerating return circuit, namely the refrigerating module, provides relatively low evaporating temperature and small cooling capacity so that temperature of a box body is kept in low energy consumption, and the second refrigerating return circuit provides relatively high evaporating temperature and large cooling capacity so that refrigerating capacity of the refrigerating system is improved. By controlling the switchover of the two return circuits through the logical controller, the control method of the large refrigerating capacity energy-saving refrigerating system can achieve intelligent switchover from the quick-freezing module to the refrigerating module, really achieve intelligent energy saving, and solve the problems that large refrigerating capacity and low electricity consumption can not be simultaneously achieved in a conventional single refrigerating system.

Description

technical field [0001] The invention relates to a refrigerator, in particular to an energy-saving refrigeration system with a large refrigeration capacity and a control method thereof. Background technique [0002] At present, traditional freezers mostly use a single refrigeration circuit with a fixed-speed compressor, that is, the system flow is: compressor-condenser-dry filter-capillary tube-evaporator-return pipe-compressor. The temperature in the freezer is kept below -18°C, and the evaporation temperature is around -30°C. In the case of a given system, in order to improve the freezing capacity of the freezer, a high-power compressor is required to provide a large cooling capacity; but when measuring power consumption, the freezer box does not need such a large cooling capacity, and the established single refrigeration system has no The ability to adjust the cooling capacity will cause frequent start and stop of the compressor, which will increase the power consumption ...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an energy-saving refrigeration system with large refrigeration capacity and its control method, which can solve the problem that the conventional single refrigeration system cannot simultaneously achieve large refrigeration capacity and low power consumption

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