The invention relates to a novel marine spiral paddle jet propulsion device which comprises a spiral plate and a bottom support, the spiral plate is of a continuous spiral plate structure with the front portion smaller than the rear portion gradually and evenly enlarged, and the outer edge of the spiral plate adopts an overhanging eave to conduct tail flow guiding; the spiral plate is arranged around a central axis, a fairing is arranged outside the spiral plate, and a propeller pushes water flow in the fairing, so that the water flow in the fairing is pressed to be sprayed out of a nozzle, and a counter-acting force is generated to push a ship to move forwards. One or more groups of spiral plates are uniformly arranged, the appearance of each spiral plate is in continuous arc transition,and the spiral plates can be lengthened as required. Compared with an existing propeller, the device has the advantages that the stress surface is lengthened, the power output area is increased, the slip ratio is reduced, the appearance is in continuous arc transition, and the outer edge of the spiral plate is provided with the overhanging eave, so that turbulence and cavitation bubbles generatedby discontinuous movement of the existing propeller of an independent blade structure are avoided, and the power output efficiency is improved.

    本发明涉及一种新式船用螺旋式桨喷推进装置,包括螺旋板及底部支架,螺旋板为前部较小、后部逐渐均匀变大的连续螺旋板结构,螺旋板的外沿采用飞檐进行尾部导流;螺旋板围绕一根中心轴线布置,螺旋板的外部装设有整流罩,螺旋桨在整流罩内推挤水流,使得在整流罩内的水流受压而从喷嘴喷出,从而产生反作用力推动船只前行。螺旋板为一组或多组均匀布置,螺旋板外形为连续的圆弧过渡,螺旋板可根据需要进行加长。本发明的优点是,相比目前的螺旋桨,受力面加长,增加了动力输出面积,降低了滑脱比,并且外形为连续的圆弧过渡,螺旋板的外沿设计了飞檐,从而避免了目前独立叶片结构的螺旋桨非连续运动产生的紊流和空泡,使得输出动力的效率得以提高。


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    Title :

    Novel marine spiral paddle jet propulsion device


    Additional title:

    一种新式船用螺旋式桨喷推进装置


    Contributors:
    SUN MING (author)

    Publication date :

    2021-03-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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