A power-adjustable non-magnetic shaftless ducted fan motor

Abstract

The invention provides a power-adjustable non-magnetic shaftless ducted fan engine, which mainly includes two parts: a power output adjustment module and a non-magnetic shaftless ducted fan module, and is characterized in that it adopts non-magnetic shaftless fan blades , can avoid the use of the central shaft, reduce the installation of the central shaft and its accessories, release the installation space, increase the axial projection area, improve power, and reduce noise; the fan blade angle of attack adjustable mechanism with mechanical and hydraulic hybrid control is adopted, It can realize the forward and reverse automatic adjustment of the fan blade when it rotates at high speed, and has a self-locking effect to meet the use requirements of different situations.

Description

technical field [0001] The invention provides a power-adjustable non-magnetic shaftless ducted fan motor, which belongs to the design field of shaftless ducted fan motors. Background technique [0002] The ducted fan engine has a wide range of applications, including small ducted UAVs, high-speed aircraft and ship models, and other fields that require aerodynamic propulsion. It has the characteristics of high speed, strong power, and relatively simple structure. It can use motors or The fuel engine is the power source, but it also has the disadvantages of complicated manufacturing and high requirements for dynamic balance. [0003] In the existing ducted fan engines, almost all are ducted fans with a central shaft. Generally, the impeller is required to be manufactured as a whole if the central shaft is used, and the drive to the central shaft must be equipped with a complex speed change mechanism or a direct connection in the central area. The mechanism will occupy the eff...

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Problems solved by technology

[0002] The ducted fan engine has a wide range of applications, including small ducted UAVs, high-speed aircraft and ship models, and other fields that require aerodynamic propulsion. It has the characteristics of high speed, strong power, and relatively simple structure. It can use motors or The fuel engine is the power source, but it also has the disadvantages of complex manufacturing and high dynamic balance requirements

[0003] In the existing ducted fan engines, almost all are ducted fans with a central shaft. Generally, the impeller is required to be manufactured as a whole if the central shaft is used, and the drive to the central shaft must be equipped with a complex speed change mechanism or a direct connection in the central area. The mechanism will occupy the effective projected area of ​​the blade, which will limit the power, especially if the blade is controlled by changing the angle of attack, it will occupy the central area and effective projected area; so now it is necessary to design a shaftless ducted fan to start, Set all the adjustment and driving parts on the outside of the duct to maximize the effective projected area of ​​the blades

[0004] At present, most of the shaftless ducted fans use the magnetic field stator and rotor mode, which requires high-frequency current and the creation of a magnetic field. The conversion of electricity into magnetism will inevitably generate a lot of heat, which will reduce the energy utilization rate. It is also difficult to wind the coil inside the blade. On the one hand, it is difficult to wind enough coils in the limited blade space, and at the same time, it is difficult to ensure the dynamic balance after winding. Therefore, it seems that the magnetic field drive mode still has great potential. technical difficulties

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