公开(公告)号：US09949413B2

公开(公告)日：2018-04-17

申请号：US15025778

申请日：2014-09-29

申请人： Yingqiang Wang ,  Haiyuan Yu

发明人： Yingqiang Wang ,  Haiyuan Yu

IPC分类号： H05K7/20

CPC分类号： H05K7/20909 ,  H05K7/20209 ,  H05K7/20918 ,  H05K7/20945

摘要： A heat-dissipating structure for a variable speed drive (VSD), a VSD device having the heat-dissipating structure, and a method for controlling the heat-dissipating structure. The heat-dissipating structure comprises: an electronic element array, having a first end and an opposite second end, electronic elements in the array producing heat during operation; a heat-dissipating fan, disposed at the first end of the array and used to conduct cooling air to flow between the first end and the second end to cool the electronic elements in the array; and a control apparatus, for controlling operation of the fan, the control apparatus controlling the fan so that the fan rotates at a first rotation direction within a first time period to conduct the cooling air to flow from the second end to the first end, and rotates at a second rotation direction contrary to the first rotation direction within a second time period to conduct the cooling air to flow from the first end to the second end.