Gd Midea Heating & Ventilating Equipment Co., Ltd.

Hefei Midea Heating & Ventilating Equipment Co., Ltd.

Guobin Peng

Haohao Wang

Mingsheng Zhong

A method and for controlling a draught fan including: obtaining an actual rotating speed, an actual power, and a target air volume of the draught fan, obtaining a target power corresponding to the target air volume according to the actual rotating speed and the target air volume, obtaining, in response to a power difference value between the actual power and the target power being not within an initial difference value range, a control duration and a rotating speed step size corresponding to the power difference value, and adjusting the actual rotating speed according to the rotating speed step size after the control duration. A dynamic adjustment of the air volume of the draught fan is achieved, and a constant air volume control of the draught fan with low cost, high control accuracy, fast adjustment speed and good stability is achieved.

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Hefei, China

Guobin Peng