| 摘要 |
Rotor for fans comprising a disc (5) and vanes (6) situated so as to form a closed assembly and provided with a central section (8), a first extremity (10) from which originates a first vane (12) and a second extremity (14) from which emerges a second vane (16); the vanes (6) are joined to the disc (5) by means of the first vanes (12), and each second vane (16) has a first segment (18) next to the central section (8) as well as a second segment (20). Between said two sections a step (22) is provided so that le second section (20) of each vane (6) covers, at least partially, the first section (18) of an immediate vane (6); the second section (20) of a vane (6) and a first section (18) of the immediate vane (6) are welded together. |
