Abstract: During the cooling operation of traditional air conditioners, there are problems such as uneven heating and cooling at near and far, and insufficient circulation at local locations, which leads to poor user experience during cooling of the air conditioner. Based on the air supply range and wind perception problems of a single fan type, the coupled fan is designed with the principle of aviation double ducts. Combined with the inherent characteristics of the two fans, through the wind of two air streams to control the wind, and carry out the conversion of multiple airflow forms, so as to realize the comfortable wind feeling of breezeless and uniform wind field formation in the whole room.

Key words: Double bypass, Coupled draught fan, Whole room, Comfort