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    • 7. 发明授权
    • Impeller for circumferential current pump
    • 圆周电流泵叶轮
    • US06454522B2
    • 2002-09-24
    • US09819730
    • 2001-03-29
    • Yasuyuki SakamotoNaotaka Tatsuzawa
    • Yasuyuki SakamotoNaotaka Tatsuzawa
    • F04D500
    • F04D29/188
    • An impeller for a circumferential current pump is provided with a plurality of vanes, and each of the vanes has an upstream side surface and a downstream side surface in a rotating direction thereof and a center line between both these surfaces extends along a radial direction of a disc-shape member, the upstream side surface has a radially inside portion and a radially outside portion which are formed to be continuous so that the radially inside portion is in parallel to the center line and the radially outside portion is inclined forward in the rotating direction of the disc-shape member, and the downstream side surface is formed entirely to be parallel to the center line.
    • 周向电流泵叶轮设有多个叶片,叶片的旋转方向上具有上游侧表面和下游侧表面,两个表面之间的中心线沿着 上游侧表面具有形成为连续的径向内侧部分和径向外侧部分,使得径向内侧部分与中心线平行,并且径向外侧部分沿旋转方向向前倾斜 并且下游侧表面整体形成为平行于中心线。
    • 10. 发明授权
    • Impeller for circumferential current pump and method of forming the same
    • 圆周电流泵叶轮及其形成方法
    • US06443692B1
    • 2002-09-03
    • US09697935
    • 2000-10-27
    • Yasuyuki SakamotoNaotaka TatsuzawaYoichi Takeuchi
    • Yasuyuki SakamotoNaotaka TatsuzawaYoichi Takeuchi
    • F04D500
    • F04D5/002F04D29/188
    • An impeller for a circumferential current pump is injection molded and can be used as it is without being polished. The impeller (7) is provided with a plurality of vane grooves (12) on an outer periphery of a synthetic resin disc-like member (8) rotated by a motor, and is rotatably received with a substantially disc-like space (6) formed between a pump casing (4) and a pump cover (5). A disc-like recess portion (14) is formed in both side surfaces (10, 11) of the disc-like member (8). A formation is performed so that a ratio (L/2t) between the sum (t1+t2=2t) of a gap (t1) between one side surface (10) and the pump casing (4) and a gap (t2) between another side surface (11) and the pump cover (5), and a size (L=R0−H−R1) obtained by subtracting a radical groove length (H) of the vane groove (12) and a radial size (R1) of the recess portion (14) from a radial size (R0) of the disc-like member (8) satisfies a relation 66≦(L/2t).
    • 用于圆周电流泵的叶轮是注射成型的,并且可以原样使用,而不被抛光。 叶轮(7)在由电动机旋转的合成树脂盘状构件(8)的外周设置有多个叶片槽(12),并且可旋转地容纳有大致盘状空间(6) 形成在泵壳体(4)和泵盖(5)之间。 在圆盘状构件(8)的两个侧表面(10,11)中形成有盘形凹部(14)。 进行形成,使得一个侧面(10)与泵壳(4)之间的间隙(t1)的和(t1 + t2 = 2t)与泵壳体(4)之间的间隙(t2)之间的比(L / 2t) 另一个侧表面(11)和泵罩(5),以及通过减去叶片槽(12)的自由基槽长度(H)和径向尺寸(R1)获得的尺寸(L = R0-H-R1) 从凹部(14)的圆盘状部件(8)的径向尺寸(R0)满足关系66 <=(L / 2t)。