Control method, system and computer-readable storage medium of multi-connected air conditioner

Abstract

The invention discloses a multi-connected air conditioner control method, a multi-connected air conditioner system and a computer-readable storage medium. The method includes: detecting whether the superheat degree of each outdoor unit meets the target requirement; The first judgment is whether the average exhaust temperature of the outdoor unit system is equal to the average exhaust temperature of the outdoor unit system; if not, the second judgment is whether the superheat degree of the passage where the electronic expansion valve of each outdoor unit is located is greater than the first preset value. Judgment; if yes, perform a third judgment on whether the average exhaust temperature of each outdoor unit is greater than the average exhaust temperature of the outdoor unit system; when the third judgment result is "Yes", then increase the temperature of the electronic expansion valve Opening degree; when the third judgment result is "No", then reduce the opening degree of the electronic expansion valve. The invention solves the problem of uneven refrigerant distribution by controlling the opening degree of the injection electronic expansion valve, and effectively controls the exhaust temperature of the system.

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...

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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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