| 摘要 |
FIELD: machine building. ^ SUBSTANCE: propeller of reversible axial fan consists of hub, of bearing disks, of ferrule and of leaf blades. Also, the leaf blades are arranged in pairs on the ferrule at alternate step; they are set off one relative to another and interconnected with bridges. In a case of the propeller there is installed webbing connecting the hub, the bearing disks and the ferrule. Thickness hb of blade, hf of ferrule, hd of the bearing disks and hh of a hub wall is chosen from condition hb<hf<hd<hh. ^ EFFECT: raised reliability, reduced cost of axial fans controlled and reversible on the run by changing direction and rotation frequency of propeller. ^ 4 dwg |
