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    PROPELLER FAN
    4.
    发明公开
    PROPELLER FAN 审中-公开

    公开(公告)号：EP3406912A1

    公开(公告)日：2018-11-28

    申请号：EP18160576.7

    申请日：2018-03-07

    申请人： Fujitsu General Limited

    发明人： SAWADA, Hirotaka ,  FUNADA, Kazuya

    IPC分类号： F04D29/32 ,  F04D29/38 ,  F04D29/66 ,  B64C11/16

    CPC分类号： F04D29/325 ,  F04D29/38 ,  F04D29/384 ,  F04D29/388 ,  F04D29/661 ,  F05B2240/30

    摘要： A propeller fan includes: a hub having a side surface about a center axis; and a plurality of blades provided on the side surface of the hub. Each blade includes an inner peripheral portion positioned closer to a base portion of the each blade connected to the hub, and an outer peripheral portion positioned closer to an outer edge of the each blade. A ratio r/R between a radius r as a distance from the center axis to a boundary between the inner peripheral portion and the outer peripheral portion and a radius R as a distance from the center axis to the outer edge of each blade is equal to or lower than 0.4. A relational expression of V1

    THIN AIRFOIL CEILING FAN BLADE
    7.
    发明公开
    THIN AIRFOIL CEILING FAN BLADE 有权
    吊扇叶片对于薄翼

    公开(公告)号：EP2805061A1

    公开(公告)日：2014-11-26

    申请号：EP13737994.7

    申请日：2013-01-17

    申请人： Delta T Corporation

    发明人： NOBLE, Ernest, John

    IPC分类号： F04D29/38 ,  F04D29/34 ,  B64C11/16

    CPC分类号： F01D5/02 ,  F04D25/088 ,  F04D29/34 ,  F04D29/384

    摘要： A fan blade comprising a root end, a blade region, and a transition region. Wherein each of the root end and blade region comprise a unique profile, and wherein the transition region comprises a profile which transitions the root end profile to the blade region profile. The root end profile comprises a substantially convex top surface, a substantially concave domed sector, and reliefs to allow for the root end to be coupled with a similarly shaped fan hub extrusion. The blade region profile comprises a substantially convex top surface and bottom surface which terminate at a leading edge and trailing edge. The blade region slopes upward along a length of the blade region and terminates at a curved tip.

    Aero- or hydrodynamic construction
    10.
    发明公开
    Aero- or hydrodynamic construction 审中-公开
    航空流体动力学

    公开(公告)号：EP2270312A1

    公开(公告)日：2011-01-05

    申请号：EP09164277.7

    申请日：2009-07-01

    申请人： PEM-Energy Oy

    发明人： Pylkkänen, Juhani ,  Seppälä, Mikael ,  Rönkkö, Väinö

    IPC分类号： F01D5/14 ,  F02K1/46 ,  F03D1/06 ,  B64C11/16

    CPC分类号： F01D5/145 ,  B64C23/06 ,  F02K1/46 ,  F03D1/0608 ,  F05B2250/184 ,  F05B2250/314 ,  F05B2250/70 ,  F05D2250/184 ,  F05D2250/314 ,  F05D2250/70 ,  Y02E10/721 ,  Y02T50/162 ,  Y02T50/673

    摘要： The invention relates to an aero- or hydrodynamic construction, which is arranged to be in relative motion with respect to a medium, the construction comprising a front end (2) where the medium is encountered and a rear end (3) where the medium exits the construction, the construction comprising an aerofoil (10) with an end (14) for encountering the medium and an end (15) for leaving the medium. In order to keep undesired energy losses caused by the construction when it moves with respect to the medium very small, in which case it would operate with high efficiency and have a low noise level, the construction is characterized in that the aerofoil comprises a ridge part (4) and a valley part (5), which constitute a flow channel which is set at an angle (α) to the direction of motion of the construction in order to remove the medium in the form of tubular turbulent flow, a micro-vortex, from the rear end of the construction, the turbulent flow being substantially opposite to the direction of motion of the construction.

    摘要翻译： 本发明涉及一种被设置为相对于介质相对运动的气动或液体动力结构，该结构包括其中遇到介质的前端（2）和介质离开的后端（3） 该结构包括具有用于遇到介质的端部（14）和用于离开介质的端部（15）的机翼（10）。 为了在结构相对于介质移动非常小的情况下保持由结构引起的不期望的能量损失，在这种情况下，其将以高效率运行并具有低噪声水平，其特征在于，机翼包括脊部 （4）和谷部（5），其构成与该结构的运动方向成一定角度（±）的流动通道，以便以管状湍流的形式除去介质， 涡流，从结构的后端，湍流基本上与构造的运动方向相反。