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    Centrifugal fluid machine
    3.
    发明授权
    Centrifugal fluid machine 失效
    离心流体机

    公开(公告)号：US06290460B1

    公开(公告)日：2001-09-18

    申请号：US09636739

    申请日：2000-08-11

    申请人： Yoshihiro Nagaoka ,  Sadashi Tanaka ,  Yukiji Iwase ,  Michiaki Ida ,  Hirotoshi Ishimaru ,  Saburo Iwasaki ,  Yoshiharu Ueyama ,  Tetuya Yoshida

    发明人： Yoshihiro Nagaoka ,  Sadashi Tanaka ,  Yukiji Iwase ,  Michiaki Ida ,  Hirotoshi Ishimaru ,  Saburo Iwasaki ,  Yoshiharu Ueyama ,  Tetuya Yoshida

    IPC分类号： F01D102

    CPC分类号： F04D29/669 ,  F04D1/06 ,  F04D29/2216 ,  F04D29/422 ,  F04D29/428 ,  F04D29/444 ,  F04D29/448 ,  F04D29/661 ,  F04D29/663 ,  F05B2260/96 ,  F05D2240/121 ,  F05D2240/304 ,  F05D2250/52

    摘要： At a vaned diffuser or a volute casing of a centrifugal fluid machine, pressure pulsation and vibrating forces acting upon the diffuser or the volute casing are mitigated or cancelled so as to abate the noise from the centrifugal fluid machine. The fluid machine having an impeller 3 rotating about a rotating. shaft 2 within a casing 1 and having a vaned diffuser 4 or volute 12 fixed to the casing 1 is constructed such that radius of the vane trailing edge of the impeller 3 and radius of the vane leading edge of the diffuser 4 or radius of the volute tongue is varied in the direction of axis of rotation and inclinations, on a meridional plane, of the vane trailing edge of the impeller 3 and the vane leading edge of the diffuser 4 or the volute tongue are set in the same orientation, thereby reduction in head and efficiency or occurrence of an axial thrust may be restrained to the extent possible to optimally abate the noise and pressure pulsation of the centrifugal fluid machine.

    摘要翻译： 在离心式流体机械的叶片式扩散器或蜗壳上，作用在扩散器或蜗壳上的压力脉动和振动力被减轻或消除，从而减轻离心流体机器的噪音。 流体机器具有围绕旋转的旋转的叶轮3。 壳体1内的轴2和具有固定到壳体1上的叶片扩散器4或蜗壳12的轴2被构造成使得叶轮3的叶片后缘的半径和扩散器4的叶片前缘的半径或蜗壳的半径 舌部在旋转轴线的方向上变化，并且在经向平面上，叶轮3的叶片后缘和扩散器4的叶片前缘或蜗形舌片的倾斜被设置在相同的取向上，从而减少 头部和效率或轴向推力的发生可以在可能的程度上被限制，以最佳地减轻离心式流体机械的噪声和压力脉动。

    Centrifugal fluid machine
    6.
    发明授权
    Centrifugal fluid machine 有权

    公开(公告)号：US06371724B1

    公开(公告)日：2002-04-16

    申请号：US09862313

    申请日：2001-05-23

    申请人： Yoshihiro Nagaoka ,  Sadashi Tanaka ,  Yukiji Iwase ,  Michiaki Ida ,  Hirotoshi Ishimaru ,  Saburo Iwasaki ,  Yoshiharu Ueyama ,  Tetuya Yoshida

    发明人： Yoshihiro Nagaoka ,  Sadashi Tanaka ,  Yukiji Iwase ,  Michiaki Ida ,  Hirotoshi Ishimaru ,  Saburo Iwasaki ,  Yoshiharu Ueyama ,  Tetuya Yoshida

    IPC分类号： F04D2944

    摘要： At a vaned diffuser or a volute casing of a centrifugal fluid machine, pressure pulsation and vibrating forces acting upon the diffuser or the volute casing are mitigated or cancelled so as to abate the noise from the centrifugal fluid machine. The fluid machine having an impeller 3 rotating about a rotating shaft 2 within a casing 1 and having a vaned diffuser 4 or volute 12 fixed to the casing 1 is constructed such that radius of the vane trailing edge of the impeller 3 and radius of the vane leading edge of the diffuser 4 or radius of the volute tongue is varied in the direction of axis of rotation and inclinations, on a meridional plane, of the vane trailing edge of the impeller 3 and the vane leading edge of the diffuser 4 or the volute tongue are set in the same orientation, thereby reduction in head and efficiency or occurrence of an axial thrust may be restrained to the extent possible to optimally abate the noise and pressure pulsation of the centrifugal fluid machine.

    Centrifugal fluid machine
    7.
    发明授权
    Centrifugal fluid machine 失效
    离心流体机

    公开(公告)号：US06364607B2

    公开(公告)日：2002-04-02

    申请号：US09853569

    申请日：2001-05-14

    申请人： Yoshihiro Nagaoka ,  Sadashi Tanaka ,  Yukiji Iwase ,  Michiaki Ida ,  Hirotoshi Ishimaru ,  Saburo Iwasaki ,  Yoshiharu Ueyama ,  Tetuya Yoshida

    发明人： Yoshihiro Nagaoka ,  Sadashi Tanaka ,  Yukiji Iwase ,  Michiaki Ida ,  Hirotoshi Ishimaru ,  Saburo Iwasaki ,  Yoshiharu Ueyama ,  Tetuya Yoshida

    IPC分类号： F01D102

    CPC分类号： F04D29/669 ,  F04D1/06 ,  F04D29/2216 ,  F04D29/422 ,  F04D29/428 ,  F04D29/444 ,  F04D29/448 ,  F04D29/661 ,  F04D29/663 ,  F05B2260/96 ,  F05D2240/121 ,  F05D2240/304 ,  F05D2250/52

    摘要： At a vaned diffuser or a volute casing of a centrifugal fluid machine, pressure pulsation and vibrating forces acting upon the diffuser or the volute casing are mitigated or cancelled so as to abate the noise from the centrifugal fluid machine. The fluid machine having an impeller 3 rotating about a rotating shaft 2 within a casing 1 and having a vaned diffuser 4 or volute 12 fixed to the casing 1 is constructed such that radius of the vane trailing edge of the impeller 3 and radius of the vane leading edge of the diffuser 4 or radius of the volute tongue is varied in the direction of axis of rotation and inclinations, on a meridional plane, of the vane trailing edge of the impeller 3 and the vane leading edge of the diffuser 4 or the volute tongue are set in the same orientation, thereby reduction in head and efficiency or occurrence of an axial thrust may be restrained to the extent possible to optimally abate the noise and pressure pulsation of the centrifugal fluid machine.

    摘要翻译： 在离心式流体机械的叶片式扩散器或蜗壳上，作用在扩散器或蜗壳上的压力脉动和振动力被减轻或消除，从而减轻离心流体机器的噪音。 具有围绕壳体1内的旋转轴2旋转并且具有固定到壳体1的带叶片扩散器4或蜗壳12的叶轮3的流体机构被构造成使得叶轮3的叶片后缘的半径和叶片的半径 扩散器4的前缘或蜗壳舌的半径在叶轮3的叶片后缘和扩散器4的叶片前缘或蜗壳的经向平面上的旋转轴线和倾斜方向上变化 舌头被设置在相同的方向上，从而可以在可能的程度上限制头部和效率的降低或轴向推力的发生，以最佳地消除离心式流体机械的噪声和压力脉动。