Multi-split air conditioner control method and system and computer readable storage medium

Abstract

The invention discloses a multi-split air conditioner control method, a multi-split air conditioner system and a computer readable storage medium. The method comprises the steps that whether the overheat degree of each outdoor unit meets the target requirement or not is detected; if the overheat degree of each outdoor unit meets the target requirement, the first judgment about whether the difference value between the average exhaust temperature of all the outdoor units and the average exhaust temperature of an outdoor unit system reaches the set value or not is conducted; if the difference value between the average exhaust temperature of all the outdoor units and the average exhaust temperature of the outdoor unit system reaches the set value, the second judgment about whether the overheat degree of a passageway where an electronic expansion valve of each outdoor unit is larger than the first preset value or not is conducted; the third judgment about whether the average exhaust temperature of all the outdoor units is larger than the average exhaust temperature of the outdoor unit system or not is conducted; and if the third judgment result is yes, the aperture of the electronic expansion valves is increased; and if the third judgment result is no, the aperture of the electronic expansion valves is reduced. The multi-split air conditioner control method, the multi-split air conditioner system and the computer readable storage medium solve the problem that refrigerant distribution is not uniform, and the system exhaust temperature is effectively controlled through control over the aperture of the jetting electronic expansion valves.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a control method of a multi-connected air conditioner, a multi-connected air conditioner system and a computer-readable storage medium. Background technique [0002] Multi-connected air-conditioning units, especially parallel multi-connected units, are affected by the installation location, installation pipeline, distance between outdoor units and height difference during actual use, and it is prone to uneven distribution of refrigerant between outdoor units, resulting in outdoor If the outdoor unit runs abnormally, the outdoor unit with more refrigerant may experience liquid return, and the outdoor unit with less refrigerant may have a high exhaust temperature, and may suffer from oil shortage and wear, which may cause damage to the outdoor unit and compressor in severe cases. [0003] Outdoor units with different capacities can distribute the refrigerant throug...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a control method of a multi-connected air conditioner, a multi-connected air-conditioning system and a computer-readable storage medium, aiming at solving the problem of uneven distribution of refrigerant between outdoor units in a multi-connected air-conditioning system

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