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

A technology of a multi-connected air conditioner and a control method, which is applied in the directions of heating and ventilation control systems, refrigerators, heating and ventilation safety systems, etc., can solve problems such as uneven distribution of refrigerants

Active Publication Date: 2018-02-02
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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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

Method used

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

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no. 1 example

[0061] 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:

[0062] 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;

[0063] 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.

[0064] 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 control method for a multi-connected air conditioner, a multi-connected air conditioner system and a computer readable storage medium. The method includes the steps of detecting whether the degree of superheat of each outdoor unit meets target requirements or not; if yes, judging whether the difference between the average exhaust temperature of each outdoor unit and the average exhaust temperature of an outdoor unit system reaches a preset value or not; if yes, comparing the value of the average exhaust temperature of each outdoor unit with the value of the average exhaust temperature of the outdoor unit system; and controlling an electronic expansion valve to act according to the results of the value of the average exhaust temperature of each outdoor unit and thevalue of the average exhaust temperature of the outdoor unit system so as to make the average exhaust temperature of each outdoor unit approximate the average exhaust temperature of the outdoor unitsystem. By controlling the opening degrees of the electronic expansion valves, the problem that refrigerant distribution in the multi-connected air conditioner system is not uniform is solved, and thesystem exhaust temperature is effectively controlled.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, 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 through th...

Claims

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Application Information

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IPC IPC(8): F24F11/64F24F11/80F25B41/06F25B49/02F25B41/31
CPCF25B49/02F25B2400/06F25B2700/21152F25B2600/2513F25B41/31Y02B30/70
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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