The invention discloses a guide pipe type efficient propeller. The propeller comprises a propeller hub, a plurality of blades uniformly fixed on the circumferential side of the propeller hub, and a guide pipe arranged outside the blades in a sleeving manner, wherein each paddle is defined by a paddle root, a guide edge, a paddle tip and a following edge which are connected in sequence, the guide edge is a curve extending in the direction away from water flow at the end away from the paddle root, and each paddle is an arc-shaped curved surface which is matched with the guide edge and is bent inthe direction towards the water flow at the end away from the paddle root. According to the efficient propeller adopting the structure, the curve guide edge is adopted, the water chopping resistanceis smaller during forward rotation, the curve guide edge is matched with the curved-surface blades, so that drainage along with the edge is enabled to be smoother, the guide pipe achieves the bundlingeffect on a reverse thrust water body, the reverse thrust is more concentrated, the normal reverse thrust is larger, and thus the propelling efficiency is improved.
本发明公开了一种导管式高效螺旋桨,包括桨毂、均匀固定于所述桨毂周圆侧的多个桨叶和套设于所述桨叶外的导管,所述桨叶由依次相连的桨根、导边、桨梢和随边围成,所述导边为远离所述桨根的一端背离水流的方向延伸的曲线,所述桨叶为与所述导边相适应且远离所述桨根的一端朝向水流的方向弯曲的弧形曲面。本发明采用上述结构的高效螺旋桨,通过采用曲线导边,正向转动时斩水阻力更小,配合曲面桨叶,使得随边泄流更为顺滑,导管实现了对反推水体的束集作用,使得反推力更为集中进而使得法向反推力更大,从而提高了推进效率。
Guide pipe type efficient propeller
导管式高效螺旋桨
2020-10-20
Patent
Electronic Resource
Chinese
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
Inner and outer guide pipe type air propeller for light hovercraft
European Patent Office | 2020
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