| 摘要 |
<p>The wheel has a disk (114) whose external periphery comprises parallel grooves for assembling bases of vanes (110, 112). The vanes comprise prongs (124) supported by flanges (134, 136). The flanges have longitudinal edges (140, 144) formed with cut-outs (142) and projections (138) respectively, for being stacked in the flanges of the prongs of adjacent vanes. The longitudinal edges of the flanges and an axis (116) of the wheel forms a positive angle for automatic re-insertion of the vane axially staggered on the disk with respect to other vanes.</p> |
