Flapping wing type energy harvesting device with rotary cylinder as front edge
A cylinder and leading edge technology, applied in the field of flapping wing energy harvesting devices, can solve the problems of poor performance under variable working conditions, narrow range of applicable working conditions, and limited lift-increasing effect
Active Publication Date: 2019-06-04
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
[0005] Among the methods currently used to increase the lift of the flapping wing, passive methods such as slots / slits, concave cavities, and forced transition devices have a narrow range of applicable working conditions and poor performance in variable working conditions, so the effect of increasing lift is limited
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Embodiment Construction
[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0019] Such as figure 2 , Shown in 3, the leading edge of the present invention is a flapping wing type energy harvesting device with a rotating cylinder, including a flapping wing airfoil 1, a rotating cylinder 2, a coupling 3, and an electric motor 4. Transform the front edge of the flapping airfoil 1 into a rotating cylinder 2, and the diameter of the rotating cylinder 2 It is 6% to 10% of the chord length c of the flapping wing airfoil 1, the center of the circle is at 6% to 10% of the chord length c of the airfoil, and the gap between the rotating cylinder 2 and the wing body of the flapping wing airfoil 1 is the radius of the rotating cylinder 2 1 / 10~1 / 20 of that. One end of the rotating cylinder 2 is connected with a miniature motor 4 that can rotate positively and negatively through a coupling 3. The motor 4 drives the rotating cylinder 2 to...
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The invention relates to a flapping wing type energy harvesting device with a rotary cylinder as the front edge. The flapping wing type energy harvesting device comprises a flapping wing shape, a rotating cylinder, a coupler and a motor; the rotating cylinder is arranged at the front edge of the flapping wing shape, one end of the rotating cylinder is connected with a micro motor capable of rotating forwards and backwards through the coupler, the rotating cylinder is driven by the motor to rotate, and the rotating speed of the rotating cylinder is controlled by adjusting the rotating speed ofthe motor. According to the invention, the rotating cylinder flow control technology is applied to the flapping wing type energy harvester, the lifting force of the flapping wing can be remarkably increased, the acting performance of the flapping wing shape is enhanced, and therefore the energy harvesting efficiency is further improved.
Description
technical field [0001] The invention relates to a flapping wing type energy harvesting device, in particular to a flapping wing type energy harvesting device with a rotatable cylinder driven by a motor. Background technique [0002] Inspired by the high-efficiency flight of birds' flapping wings, humans proposed the idea of airfoils flapping in the wind or water to obtain energy from the fluid. The flapping motion can be regarded as the combined motion of the heave translation of the airfoil in the plane and the pitching motion around a point in the translation plane. The work done by the wing can achieve energy capture under certain conditions, and the lift force has a great influence on the energy capture efficiency. Increasing the lift force can improve the energy capture efficiency. [0003] Different from the traditional rotating impeller wind turbine, the airfoil in the flapping wing energy harvesting device can perform superimposed motions of heave and pitch (the h...
Claims
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IPC IPC(8): B64C33/02
Inventor 孙晓晶
Owner UNIV OF SHANGHAI FOR SCI & TECH