公开(公告)号：EP4086530A1

公开(公告)日：2022-11-09

申请号：EP20910288.8

申请日：2020-11-13

申请人： Qingdao Haier Air-Conditioning Electronic Co., Ltd ,  Haier Smart Home Co., Ltd.

发明人： SONG, Dayue ,  WANG, Haisheng ,  ZHANG, Ming ,  SUN, Mengmeng

IPC分类号： F24F11/77 ,  F24F11/64

摘要： The present disclosure relates to the technical field of air conditioning; in particular, the present disclosure relates to a method for controlling a rotational speed of an external fan of an air conditioner. The present disclosure aims to solve the problem of low adjustment accuracy of external fans of existing air conditioners. To this end, the method for controlling the rotational speed includes: obtaining a coil temperature of the outdoor heat exchanger after the external fan starts; comparing the coil temperature with a preset temperature threshold; and selectively controlling the rotational speed of the external fan to increase or decrease by a rotational speed adjustment amount based on a comparison result; in which the preset temperature threshold is determined based on an outdoor ambient temperature. By selectively controlling the rotational speed of the external fan to increase or decrease by the rotational speed adjustment amount based on the coil temperature of the outdoor heat exchanger and the preset temperature threshold, the control method of the present application can realize a stepless speed adjustment of the external fan, so that the rotational speed of the external fan can match the coil temperature of the outdoor unit, the influence of the rotational speed of the external fan on the air conditioning system can be reduced, and a stable operation of the air conditioning system can be ensured.