One-arm multi-leaf vertical axis wind mill

A technology of vertical axis and wind turbines, applied in the field of one-arm multi-blade vertical axis wind turbines, which can solve the problems of reduced wind turbine efficiency, large size, and large inertia of wind blades, and achieves convenient transportation and maintenance, improved efficiency, and reduced The effect of inertia

Inactive Publication Date: 2008-07-30
霍家文 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is: when the wind blade runs to the upwind direction, although the wind turbine can reduce the windward area by swinging the angle of the wind blade to reduce the headwind resistance, but because it adopts a one-way single-blade structure, and usually because To increase the power of the wind turbine, the size of the single fan blade should be made as large as possible, resulting in a large inertia of the blade swing. Therefore, it will be difficult to swing the blade to a suitable angle due to the large inertia , so that the blades still have to overcome the headwind resistance and consume a certain amount of energy, resulting in a reduction in the efficiency of the wind turbine

Method used

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  • One-arm multi-leaf vertical axis wind mill
  • One-arm multi-leaf vertical axis wind mill
  • One-arm multi-leaf vertical axis wind mill

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The one-arm multi-blade vertical axis wind turbine shown in Figures 1 to 3 is one of the embodiments of the present invention, and it includes a fan blade 1, a fan blade shaft 6, a fan shaft 7 for outputting power, and a fan shaft installed on the fan shaft. 7 and can rotate synchronously with the fan shaft 7, the fan blade frame is composed of five pairs of radial blade arms 3, 3' and two ring frames 4, 4', which are equally arranged with the fan shaft 7 as the center of the circle It has a three-dimensional annular bracket, one end of the leaf arm 3, 3' is installed on the fan shaft 7, and the other end is radially cantilevered with the fan shaft as the center and connected with the ring frame 4, 4', the leaf arm 3, 3' The bent arm structure is adopted, and each leaf arm has two bent parts 3a, 3b, and the bent angle between the two bent parts 3a, 3b, that is, the bent angle α of the leaf arm, is 170°.

[0031] The fan blade 1 is a rectangular blade structure whose ver...

Embodiment 2

[0034]The second embodiment of the one-arm multi-blade vertical axis wind turbine of the present invention is shown in Figures 4 to 6, and the difference from the first embodiment is that the blade frame in this embodiment is five pairs of radial blade arms 3, 3' and three annular frames 4, 4', 4", each leaf arm has two angles α1, α2 and three bending parts 31, 32, 33, wherein the angles α1, α2 are respectively 165 and 160°, each bending part 31, 32, 33 of the leaf arm 3 is equipped with a fan blade 1 correspondingly, that is, three fan blades are installed between a pair of blade arms arranged in pairs, correspondingly located in a pair of There are also three blade rotating shafts 6 between the blade arms, and they are fixed vertically on the blade arms to form an integral structure with the blade frame, and the blades are hinged on the blade rotating shaft. The wind turbine of this embodiment includes There are 15 blades and 15 blade shafts, and every three blades 1 on each...

Embodiment 3

[0036] The third embodiment of the one-arm multi-blade vertical axis wind turbine of the present invention is shown in Figures 7 to 8, and the difference from the first embodiment is that the blade frame in this embodiment is a bracket structure composed of two blade frames. The two blade holders are arranged on the fan shaft 7 from top to bottom, the upper blade holder is the upper blade holder, and the lower blade holder is the lower blade holder, the projection of the upper blade holder and the lower blade holder on the horizontal plane coincide, the projection planes of the blades installed on the blade arm of the upwind blade frame and the blades installed on the blade arm of the downwind blade frame also coincide.

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Abstract

The invention discloses a vertical-shaft windmill with one arm and a plurality of vanes, and the windmill comprises wind vanes, a wind vane rotary shaft, a windmill rotary shaft, a vane arm and a wind vane swing spacing mechanism, wherein, the wind vane swing spacing mechanism is composed of a chock block and a swing angle spacing block; one end of the vane arm is connected to the windmill rotary shaft, and the other end extends outwards by suspending the arm radially with the windmill rotary shaft as the center of a circle; each vane arm is provided with two or more wind vanes; each wind vane is hinged on the vane arm by the wind vane rotary shaft vertically connected to the vane arm, and the swing angel of each wind vane is limited by the wind vane swing spacing mechanism. The windmill of the invention uses a plurality of small-sized wind vanes to substitute a large-size wind vane with one arm and single vane, can utilize wind energy better, and can improve the efficiency of the windmill.

Description

technical field [0001] The invention relates to a vertical axis wind turbine, in particular to a multi-blade vertical axis wind turbine with multiple blades on one arm instead of a large blade with a single blade in one arm, which makes better use of wind energy and improves efficiency. machine. Background technique [0002] A wind turbine is a device that converts wind energy into kinetic energy by rotating a wind wheel driven by wind power. It is often used in large, medium and small wind power generation systems. Vertical axis wind turbine is one of the common types of existing wind turbines. Chinese invention patent application 200710029767.7 discloses a vertical axis wind turbine with swingable blades, which includes blades, blade shafts, fan shafts for power output and The fan blade frame installed on the fan shaft and can rotate synchronously with the fan shaft, wherein the fan blade frame is composed of at least three pairs of blade arms arranged in pairs on the upp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D3/06
CPCY02E10/74
Inventor 霍家文汤复兴
Owner 霍家文
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