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

A multi-connected air conditioner and control method technology, which is applied in the direction of refrigerators, refrigeration components, mechanical equipment, etc., and can solve the problem of uneven distribution of refrigerants

Active Publication Date: 2019-11-22
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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no. 1 example

[0062] Further, see image 3 , based on the first embodiment of the control method of the multi-connected air conditioner of the present invention, in the second embodiment of the control method of the multi-connected air conditioner of the present invention, the above step S40 includes:

[0063] Step S41a, judging whether the opening degree of the electronic expansion valve of the outdoor unit with the higher average exhaust temperature among the two outdoor units is smaller than the maximum opening degree;

[0064] Step S41b, when the opening degree of the electronic expansion valve is smaller than the maximum opening degree, control the electronic expansion valve to increase the opening degree based on the current opening degree.

[0065] In this implementation, there are only two outdoor units of the multi-connected air conditioner, and in the case of only two outdoor units, the opening degree of the electronic expansion valve can be adjusted by directly comparing the aver...

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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; Whether the average exhaust temperature of each outdoor unit is equal to the average exhaust temperature of the outdoor unit system; if not, then compare the average exhaust temperature of each outdoor unit with the average exhaust temperature of the outdoor unit system; according to each The result of the average discharge temperature of each outdoor unit and the average discharge temperature of the outdoor system controls the action of the electronic expansion valve so that the average discharge temperature of each outdoor unit is close to the average discharge temperature of the outdoor system. The invention solves the problem of uneven refrigerant distribution in the multi-connected air-conditioning system by controlling the opening degree of the 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02F25B41/06F25B41/31
CPCF25B49/02F25B2600/2513F25B2700/21152F25B2400/06F25B41/31Y02B30/70
Inventor 许永锋李宏伟熊美兵蒋运鹏
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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