The invention discloses a blade tip winglet type propeller (fan). The blade tip winglet type propeller (fan) comprises a propeller (fan) blade hub and propeller (fan) blades, wherein one winglet perpendicular to a blade tip is connected between the apex of the long edge of the blade tip of each propeller (fan) blade and the apex of the short edge of the blade tip of each propeller (fan) blade; thewinglets are not limited in shape and are generally arc-shaped triangles, and the height of the winglets is generally greater than the distance between the apexes of the long edges to the apexes of the short edges of the propeller (fan) blades perpendicular to the plane of a propeller (fan) axis; the distance from the heads of the winglets to an axle center is not equal to the distance from the tails of the winglets to the axle center, and included angles are formed between the edges, connected with the blade tips, of the winglets and arcs drawn by the apexes of the long edges of the propeller (fan) blades with the axle center of the propeller (fan) as the circle center to ensure that along the external slopes of the propeller (fan) blades and under the action of centrifugal force enhancement, part of air (water) flow splashed towards the periphery of the axle center of the propeller (fan) is guided to move forwards or backwards in order to do work, wasted acting force is changed intoeffective acting force, and meanwhile, the vortex ring (vertex) phenomenon of the blade tips is eliminated.

    本发明公开了一种叶梢小翼式螺旋桨(风扇),包括桨(扇)叶轮毂、桨(扇)叶,并在每个桨(扇)叶叶梢长缘顶点到短缘顶点之间,连接一个垂直于叶梢的小翼,小翼形状不限,一般为弧形三角形;小翼的高一般大于桨(扇)叶长缘顶点到短缘顶点垂直于螺旋桨(风扇)轴的面之间的距离;小翼的头到轴心的距离不等于小翼的尾到轴心的距离,小翼和叶梢连接的边,与桨(扇)叶长缘的顶点以螺旋桨(风扇)轴心为圆心画出的圆弧形成夹角,以确保顺着桨(扇)叶的外斜面,并在离心力强化作用下,将朝螺旋桨(风扇)轴心外四周飞溅的部分气(水)流导引向前或者向后有序运动做功,把浪费掉了的作用力变为有效的作用力。同时,又消除了叶梢涡环(旋)现象。


    Access

    Download


    Export, share and cite



    Title :

    Blade tip winglet type propeller (fan)


    Additional title:

    一种叶梢小翼式螺旋桨(风扇)


    Contributors:
    CAO ZHENGWU (author)

    Publication date :

    2020-09-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F03D Windkraftmaschinen , WIND MOTORS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B64C AEROPLANES , Flugzeuge / F03B MACHINES OR ENGINES FOR LIQUIDS , Kraft- und Arbeitsmaschinen oder Kraftmaschinen für Flüssigkeiten



    Winglet

    MOORE SAMUEL / ROBERTS SCOTT | European Patent Office | 2020

    Free access

    WINGLET AND WINGLET COVER ASSEMBLY

    BARNETT THOMAS / SCAIFE ANDREW / PROUDLER LEE | European Patent Office | 2022

    Free access

    WINGLET AND WINGLET COVER ASSEMBLY

    BARNETT THOMAS / SCAIFE ANDREW / PROUDLER LEE et al. | European Patent Office | 2023

    Free access

    PROPELLER AND PROPELLER BLADE

    CÍRUS RÓBERT / NYÍRI ATTILA / CÍRUS NORBERT | European Patent Office | 2024

    Free access

    Winglet

    FONG TONY / AXFORD TIMOTHY / CHAUSSEE JULIEN | European Patent Office | 2018

    Free access