Double-compressor air conditioning system and method and device for controlling refrigerant circulation quantity of double-compressor air conditioning system

Abstract

The invention discloses a double-compressor air conditioning system and a method and device for controlling the refrigerant circulation volume of the double-compressor air conditioning system. The method for controlling the refrigerant circulation volumes of refrigeration systems comprises the following steps of acquiring operating parameters of the refrigeration systems, comparing the operating parameters and a target parameter, increasing the refrigerant circulation volumes of the refrigeration systems if the operating parameters are less than the target parameter, and decreasing the refrigerant circulation volumes of the refrigeration systems if the operating parameters are greater than the target parameter. According to a result of comparison between the operating parameters and the target parameter, which is obtained in real time, the refrigerant circulation volumes of the two refrigeration systems is adjusted. When the operating parameters of the two refrigeration systems are equal to the target parameter, the heat exchange 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 capability of the heat exchanger is fully exerted, so that the heat exchange area is effectively utilized, system optimization is realized, and the cost is reduced.

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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