-
公开(公告)号：US10018204B2
公开(公告)日：2018-07-10
申请号：US14956566
申请日：2015-12-02
发明人： Tao Hong , Derek Mudge
IPC分类号： F04D29/38
CPC分类号： F04D29/384
摘要： The invention relates to a fan and a fan module, wherein the fan comprises: a fan hub which comprises a fan rotation axis to rotate in a predetermined direction, a plurality of fan blades comprising a lower end and an upper end, wherein each fan blade is attached with its lower end to the fan hub and extends radially outwardly from the fan hub, wherein each fan blade comprises a lower back sweep portion and an upper forward sweep portion, wherein a maximum ratio r/R of the lower back sweep portion is at least 0.90, wherein r is the local radius of a point of the fan blade edge, and R is the radius of the upper end of the fan blade.
-
公开(公告)号：US20170159543A1
公开(公告)日：2017-06-08
申请号：US14956566
申请日：2015-12-02
发明人： Tao Hong , Derek Mudge
CPC分类号： F04D29/384
摘要： The invention relates to a fan and a fan module, wherein the fan comprises: a fan hub which comprises a fan rotation axis to rotate in a predetermined direction, a plurality of fan blades comprising a lower end and an upper end, wherein each fan blade is attached with its lower end to the fan hub and extends radially outwardly from the fan hub, wherein each fan blade comprises a lower back sweep portion and an upper forward sweep portion, wherein a maximum ratio r/R of the lower back sweep portion is at least 0.90, wherein r is the local radius of a point of the fan blade edge, and R is the radius of the upper end of the fan blade.
-
搜索结果
2 条记录 (耗时 0.012 秒)
