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    • 1. 发明申请
    • ラジアルタービン用羽根車
    • VANE轮用于径向涡轮机
    • WO2003058038A1
    • 2003-07-17
    • PCT/JP2003/000009
    • 2003-01-06
    • 三菱重工業株式会社大迫 雄志白石 隆
    • 大迫 雄志白石 隆
    • F01D5/14
    • F02B39/00F01D5/048F01D5/143F05D2250/141F05D2250/16
    • A vane wheel for a radial turbine comprises a plurality of vanes and a circular main plate on which scallops are formed by cutting out the portion between a negative pressure surface of each of the vanes and a pressure surface of the vane adjacent to vane. A minimum radius portion where the distance from the center of the circular main plate to an edge portion of the scallop is minimum is positioned closer to the pressure surface side from the mid point of the circumferential distance between the negative pressure surface of one vane and the pressure surface of the adjacent vane, so that the cutout portion is asymmetrical between the negative pressure surface of the vane and the pressure surface of the adjacent vane. Collision of fluid with the edge portions of the vanes can prevent the turbine efficiency from lowering. An edge portion of the circular main plate, which edge portion is located between the negative pressure surface-side tip portion of the vane and the minimum radius portion of the circular main plate, is formed with at least one linear portion, circular arc or parabola or a combination of them.
    • 用于径向涡轮机的叶轮包括多个叶片和圆形主板,通过切割每个叶片的负压表面和与叶片相邻的叶片的压力表面之间的部分,形成有扇形扇形。 从圆形主板的中心到扇贝的边缘部分的距离最小的最小半径部分距离一个叶片的负压表面与第一叶片的负压表面之间的周向距离的中点更靠近压力表面侧 相邻叶片的压力表面,使得切口部分在叶片的负压表面和相邻叶片的压力表面之间是不对称的。 流体与叶片的边缘部分的碰撞可以防止涡轮机的效率降低。 圆形主板的边缘部分位于叶片的负压表面侧末端部分和圆形主板的最小半径部分之间的边缘部分形成有至少一个直线部分,圆弧或抛物线 或它们的组合。