Automatic dust removing control method for variable frequency and multi-connected outdoor unit

Abstract

The invention relates to an automatic dust removing control method for a variable frequency multi-connected outdoor unit. The automatic dust removing control method comprises the following steps that(1) when an outdoor fan operates, changes of the rotating speed Fr and current Fi and cumulative running time Ft of the fan are detected; (2) when any one of the following three conditions is met, thestep (4) is executed, and the outdoor fan starts to be put into dust removing operation: (a) the fan current Fi is greater than a first set current value I1 of the fan current, and the cumulative running time Ft of the fan is greater than X hours; (b) the fan current Fi is greater than a second set current value I2, smaller than I1, of the fan current, and the cumulative running time Ft of the fan is greater than Y hours, wherein Y is greater than X; (c) the fan current Fi is greater than a third set current value I3, smaller than I2, of the fan current, and the cumulative running time Ft ofthe fan is greater than Z hours, wherein Z is greater than Y; (3) if the conditions of the step (2) are not satisfied, the dust removing operation is not performed and the step (2) is execute again; and (4) dust removing operation is performed, and is exited after 3 minutes. According to the automatic dust removing control method for the variable frequency multi-connected outdoor unit, the automatic dust removing is realized through the detection of parameters such as the running current of the outdoor fan, and the stable operation of the outdoor machine system is ensured.

Description

technical field [0001] The invention relates to an air conditioner control technology, in particular to a method suitable for dust removal of a frequency conversion multi-connection outdoor unit, specifically an automatic dust removal control method for a frequency conversion multi-connection outdoor unit. Background technique [0002] Multi-connected outdoor units are generally installed on the roof or on a large-area platform, and are used for a long time. The condenser area of ​​the outdoor unit is large, and the condenser is seriously dusted after long-term operation, which inevitably results in poor performance and poor user experience. The operation efficiency is low, which affects the comfort and economy of users. [0003] At present, the cleaning of the outdoor unit is performed manually and regularly, but automatic cleaning cannot be done. There are problems such as untimely cleaning and high labor costs, which urgently need improvement. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] Multi-connected outdoor units are generally installed on the roof or on a large-area platform, and are used for a long time. The condenser area of ​​the outdoor unit is large, and the condenser is seriously dusted after long-term operation, which inevitably results in poor performance and poor user experience. The operation efficiency is low, which affects the user's comfort and economy

[0003] At present, the cleaning of the outdoor unit is performed manually and regularly, but automatic cleaning cannot be done. There are problems such as untimely cleaning and high labor costs, which urgently need to be improved.

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