| 摘要 |
An axial-flow fan has a plurality of main fins ( 702 ), and auxiliary fins ( 703 ) provided between the main fins ( 702 ), where the position of a front end of the auxiliary fin ( 703 ) relative to X axis and the position of a front end of the main fin ( 702 ) adjoining the auxiliary fin in reverse-rotary direction are aligned, the height of the auxiliary fin ( 703 ) is approximately three fourths of the height of the main fin ( 702 ), and the cross sections of the main fin ( 702 ) and the auxiliary fin ( 703 ) taken along the axial direction of the main shaft are streamlined. |
