(EN) The present invention pertains to an inducer having multiple blades of the same shape, wherein the shape of the inducer enables optimal stabilization of cavitation behavior. This inducer has multiple blades of the same shape, with the tip-side blade load being greater at the front half of the blade than at the rear half. When the blade angle from the circumferential direction of the inducer is betab(degrees) and the meridian plane distance is m (millimeters), the blade angle increase rate dbetab/dm is 0.2 or greater from the blade front edge to the dimensionless meridian plane position 0.15 on the tip side, and is 0.25 or greater from the blade front edge to the dimensionless meridian plane position 0.15 at the mid-span.
(ZH) 本发明涉及在具有多个同一形状的叶片的诱导轮中，能够使气穴的动作稳定性最佳化的诱导轮形状。诱导轮具有同一形状的多个叶片，其中，叶尖侧的叶片负荷在叶片的前半部比叶片的后半部大，在设诱导轮的从周向的叶片角度为βb(度)，设子午面距离为m’(毫米)时，叶片角度增加率dβb/dm’在叶尖侧从叶片前缘到无量纲子午面位置0.15为0.2以上，并且在中间跨度中从叶片前缘到无量纲子午面位置0.15为0.25以上。
