Air conditioner control method, air conditioner control system and air conditioner

Abstract

The invention provides a control method of an air conditioner, a control system of the air conditioner and the air conditioner. The control method of the air conditioner includes the steps that the exhausting temperatures of all compressors are detected; the average value of the exhausting temperatures of all the compressors is calculated and is written as an exhausting temperature average value;and according to the exhausting temperatures and the exhausting temperature average value of all the compressors, air dampers of various draught fans are adjusted. According to the control method of the air conditioner, according to the exhausting temperatures and the exhausting temperature average value of all the compressors, the air dampers of the draught fans are adjusted, in this way, when the air dampers of the draught fans are adjusted, the exhausting temperatures and the loads of other compressors can be used for reference, it is guaranteed that the loads among the compressors are morebalanced, the problems that the air damper difference of various outdoor units is large, and consequently heat exchanging of outdoor unit heat exchangers is not uniform and refrigerant distribution is not uniform are solved, and the reliability of a refrigerating system is improved.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to an air conditioner control method, an air conditioner control system and the air conditioner. Background technique [0002] When multiple outdoor units are connected in parallel in a multi-line system, the fan of each outdoor unit is generally controlled according to its own pressure and other parameters. When the pressure fluctuates, the fan is adjusted accordingly. For example, when the pressure is higher than a certain value, the fan is adjusted every Raise the windshield by one gear at a certain time. But for parallel machines, when multiple external machines are connected in parallel, the pressure is higher than a certain value, and the pressure value detected by the pressure sensor of each external machine may have a little deviation. Raise the windshield when the pressure value is higher, and the pressure will generally decrease at this time, so that the ...

AI Technical Summary

Problems solved by technology

But for parallel machines, when multiple external machines are connected in parallel, the pressure is higher than a certain value, and the pressure value detected by the pressure sensor of each external machine may have a little deviation. Raise the windshield when the pressure value is higher, and the pressure will generally decrease at this time, so that the other parallel external units do not meet the conditions for raising the windshield, so the windshield will not be raised again, and the same situation will also occur when the windshield is lowered. If the deviation is large enough or the pressure detection accuracy is not sensitive, the windshield of each outdoor unit will be very different, resulting in different degrees of heat exchange and uneven distribution of refrigerant. The exhaust temperature of the external unit is 40 to 50 degrees, especially when the low-temperature refrigeration is running with a small load, which affects the reliability of the system

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