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22 条记录 (耗时 0.02 秒)

    Turbo machines
    6.
    发明授权
    Turbo machines 有权

    公开(公告)号：US06435819B1

    公开(公告)日：2002-08-20

    申请号：US09925539

    申请日：2001-08-10

    申请人： Kouichi Irie ,  Tomoyoshi Okamura ,  Akira Manabe ,  Junichi Kurokawa

    发明人： Kouichi Irie ,  Tomoyoshi Okamura ,  Akira Manabe ,  Junichi Kurokawa

    IPC分类号： F01D2504

    摘要： For improving characteristic uprising at the right-hand side of head-flow rate characteristic of a turbo machine, as well as for suppressing increase of vibration and/or noises thereof, a plurality of first grooves 24 in direction of gradient in pressure of fluid are formed on an inner flow surface of a casing, for connecting an inlet side of blades of an impeller and an area on the inner flow surface of the casing where the impeller blades reside in, over an inner circumference of the casing. Also, second grooves 25 in a circumferential direction are formed in an area on the inner flow surface of the casing where the impeller blades reside in, for communicating the first grooves in the circumferential direction of the casing.

    Fluid machine
    10.
    发明授权
    Fluid machine 有权
    流体机

    公开(公告)号：US08469654B2

    公开(公告)日：2013-06-25

    申请号：US12735600

    申请日：2009-01-14

    申请人： Junichi Kurokawa ,  Shuusaku Kagawa

    发明人： Junichi Kurokawa ,  Shuusaku Kagawa

    IPC分类号： F04D29/24

    CPC分类号： F04D5/002 ,  F04D1/00 ,  F04D5/001 ,  F04D29/2255 ,  F04D29/24

    摘要： A rotary-type fluid machine which enables practical and effective operation in an extremely low specific speed range. The rotary-type fluid machine (1, 1′) has an impeller (10, 10′) integrally connected to a rotating drive shaft (2). The impeller is accommodated in a casing (3). Fluid (a) of a suction fluid passage (4) to be pumped flows into a center part (11) of the impeller. The fluid (b) is discharged from a peripheral portion (12) of the impeller by the effect of the centrifugal force of the rotating impeller, so that the fluid is delivered through a delivery fluid passage (5) outside of the casing. Many grooves (15) extending toward a peripheral edge of the impeller from the center part of the impeller are formed on the impeller. The groove opens on an outer circumferential surface (18) of the impeller, and causes strong recirculation vortices (R) to be formed in the vicinity of the peripheral edge of the impeller when the impeller rotates.

    摘要翻译： 一种旋转式流体机械，能够在极低的特定速度范围内实现有效的操作。 旋转式流体机械（1,1'）具有与旋转驱动轴（2）一体连接的叶轮（10,10'）。 叶轮容纳在壳体（3）中。 要泵送的抽吸流体通道（4）的流体（a）流入叶轮的中心部分（11）。 流体（b）通过旋转叶轮的离心力从叶轮的周边部分（12）排出，使得流体通过壳体外部的输送流体通道（5）输送。 在叶轮上形成有许多从叶轮的中心部向叶轮周缘延伸的槽（15）。 该槽在叶轮的外周面（18）上开口，并且当叶轮转动时，在叶轮的周缘附近形成强的再循环旋涡（R）。