Dual-compressor air-conditioning system and method and device for controlling refrigerant circulation volume thereof

Abstract

The invention discloses a dual-compressor air-conditioning system and a control method and a control device for the refrigerant circulation amount thereof. The control method for the refrigerant circulation amount of the refrigeration system includes the steps of: acquiring the operating parameters of the refrigeration system; comparing the operation parameters and target parameters; if the operation parameter is smaller than the target parameter, increase the refrigerant circulation volume of the refrigeration system; if the operation parameter is greater than the target parameter, then reduce the refrigerant circulation volume of the refrigeration system. According to the comparison result of the operation parameter obtained in real time and the target parameter, the refrigerant circulation volume of the two refrigeration systems is adjusted. When the operating parameters of the two refrigeration systems are equal to the target parameters, the heat transfer ratio between the two refrigeration systems is 1 or a preset value. In this way, the heat exchange of the two refrigeration systems can be ensured to be more balanced, and the capacity of the heat exchanger can be fully utilized, thereby effectively utilizing the heat exchange area, optimizing the system, and reducing costs.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, and more specifically, to a dual-compressor air-conditioning system and a control method and control device for refrigerant circulation amount thereof. Background technique [0002] In the prior art, the air-conditioning system generally only has one compressor, so due to the complexity of the air-conditioning conditions, such as hot summer and cold winter, the cooling and heating effects during use are often unsatisfactory, and it is very easy to break down. Once a fault occurs, it will affect the normal operation of the entire air conditioning system. [0003] To sum up, how to effectively solve the problem that the cooling or heating effect of the air-conditioning system cannot meet the demand is an urgent problem for those skilled in the art. Contents of the invention [0004] In view of this, the first object of the present invention is to provide a dual-compressor air-con...

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Problems solved by technology

[0004] In view of this, the first object of the present invention is to provide a dual-compressor air-conditioning system. The structural design of the dual-compressor air-conditioning system can effectively solve the problem that the cooling or heating effect of the air-conditioning system cannot meet the demand. The second purpose is to provide a control method and control device for the amount of refrigerant circulation in a dual-compressor air-conditioning system, which can solve the problem of unbalanced heat exchange in a dual-compressor system

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