Refrigerating and ice-making air conditioning unit and control method thereof

Abstract

The invention provides a refrigerating and ice-making air conditioning unit and a control method thereof. The refrigerating and ice-making air conditioning unit comprises a compressor, a condenser, afirst evaporator and a second evaporator. The compressor comprises a first impeller and a second impeller. An air port in one side of the first impeller is communicated with the condenser through a first pipeline, an air port in the other side of the first impeller is communicated with the first evaporator through a second pipeline, the air port in one side of the second impeller is communicated with the condenser through a third pipeline, and the air port in the other side of the second impeller is communicated with the second evaporator through a fourth pipeline; the first impeller is an icestorage mode working impeller, and the second impeller is a refrigeration mode working impeller. According to the refrigerating and ice-making air conditioning unit, two different refrigerant circulation structures of refrigeration and ice making are effectively integrated through one compressor and one condenser; working condition switching between the conventional refrigeration working condition and the ice storage working condition which can be achieved through two independent units originally is achieved, the overall installation size is greatly reduced, and cost is saved.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to a refrigeration and ice-making air-conditioning unit and a control method. Background technique [0002] Cold storage air-conditioning technology is an important technical measure to transfer peak power, develop low-peak power, optimize resource allocation, and protect the ecological environment. The ice storage air-conditioning system uses an electric refrigerator to store cold energy in the form of ice during the low power consumption period at night when the power load is very low, and releases the stored cold energy during the day when the power load is high. An air-conditioning system that meets the needs of building air-conditioning loads is an effective means of power load regulation. The main advantages of the ice storage system are: (1) shifting the power consumption time of the refrigeration unit, which plays a role in transferring the power load duri...

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of high design cost and high site requirements caused by the need to use different units for different working conditions in the refrigeration and ice-storage air-conditioning units in the prior art, so as to provide a refrigeration and ice-making air-conditioning Unit and control method

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