TWM657997U - Vertical axis wind power generation device - Google Patents

Abstract

The present invention includes: a base, a generator mounted on the base, a main shaft mounted on the generator, and a pneumatic unit mounted on the main shaft. The pneumatic unit is characterized in that a plurality of radial rods are mounted on the main shaft, and the radial rods are mounted with an intermediate element, the intermediate element defines a flow guide space for pivoting a blade, and the intermediate element is further provided with a limiting member below the pivot shaft that can stop the bottom edge of the back of the blade, so that the front of the blade can withstand a positive wind force to rotate the main shaft, but when the back of the blade withstands a reverse wind force, the blade can be pushed to swing upward away from the limiting member to release the reverse wind force. Accordingly, the present invention has the advantages of long service life and effective improvement of power generation efficiency.

Description

Vertical axis wind turbine

This new type relates to a vertical shaft wind power generation device, especially to a technical field that can extend the service life and improve the power generation efficiency.

The previous technology is as shown in the previous case of Taiwan's new patent No. M 637028 "Vertical axis wind turbine generator", but the previous case has the following shortcomings in application:

1. Short service life: The blade surface of the previous case needs to be vertical to the ground at all times, so the blade axis pivoted on the branch rod must be located at the top edge of the blade surface, and the stopper is installed on the branch rod, so the stopper is located near the blade axis. When these structures are arranged on the blade surface to withstand the wind force with a large area and rotate the vertical axis, the resistance arm distance formed by the stopper and the blade axis is quite short, which causes the stopper and the blade axis to withstand extremely large stress, resulting in the stopper or blade axis being easily damaged; in addition, the area of the stopper abutting the blade is quite limited, and both will have the disadvantage of stress concentration, which further shortens the service life of the stopper or blade.

2. The power generation efficiency needs to be improved: When the blade surface of the previous case bears the wind force with a large area and rotates the vertical axis, the blade surface is dynamically swinging around the vertical axis, so the time for the wind force to push the blade surface vertically is not long, and the time for the wind force to disperse along the inclined blade surface is longer. This will reduce the torque that pushes the vertical axis, so there is a problem of low power generation efficiency.

In view of the above shortcomings of the previous proposal, the creator of this invention has carefully studied and improved it, and finally developed this new model.

The main content of this new vertical axis wind turbine generator is: an intermediate element is added to the radial rod, and the top edge of the blade is pivoted to the intermediate element through a pivot. In this way, the intermediate element can be provided with a limiter under the pivot to stop the bottom edge of the back of the blade, so that the front of the blade can withstand a positive wind force and rotate a main axis, so that the resistance arm formed by the limiter from the pivot can be relatively extended compared to the previous case, so the stress borne by the limiter can be relatively reduced, so the limiter is less likely to be damaged. In addition, the structural design can easily increase the area of the limiter abutting the blade, so as to further extend the service life of the limiter and the blade.

Another feature of this new vertical shaft wind turbine is that the aforementioned intermediate element further defines a flow guiding space for connecting the blades therein. The structural design enables the blades to bear the positive wind force and drive the main shaft to rotate. The flow guiding space can reduce the dispersion of the positive wind force, thereby more efficiently applying the torque of the rotating main shaft, thereby effectively improving the power generation efficiency.

10: Base

20: Generator

30: Main axis

A: Pneumatic unit

40: Radial

41: Ring

42: Bolts

50:Intermediary Components

500: diversion space

51: Upper frame

52: Left frame

53:Right frame

54: Lower frame

55: Folding

60: pivot

70:Leaves

71: Front

72: Back

73: Axle seat

80: Restricted items

W: Counterweight

Figure 1 is a top view of the new model after assembly.

Figure 2 is a front view of the new model after assembly.

Figure 3 is a schematic diagram of the new type of radial rod, intermediate element, pivot and blades.

Figure 4 is a combined schematic diagram of Figure 3.

Figure 5 is a schematic diagram of the implementation of the new intermediate element and blades bearing positive wind force.

Figure 6 is a schematic diagram of the implementation of the new intermediate element and blades to withstand reverse wind force.

Please refer to Figures 1 to 6. The present invention at least comprises: a base 10 that can be vertically mounted on the ground to support the generator 20, the main shaft 30 and the pneumatic unit A to a desired height; a generator 20 mounted on the base 10; a main shaft 30 mounted on the generator 20, which is protrudingly mounted above the base 10 and perpendicular to the ground; and a pneumatic unit A mounted on the main shaft 30, which is composed of a radial rod 40, an intermediate element 50, a pivot 60, a blade 70 and a limiting member 80; specifically, the The main shaft 30 is coaxially mounted with a removable collar 41 through a bolt 42. The collar 41 is fixed with a plurality of radiating rods 40 at equal angles so that the radiating rods 40 radiate horizontally outward with the main shaft 30 as the center. The bottom surface of the radiating rod 40 is mounted with an intermediate element 50. The intermediate element 50 is composed of an upper frame 51 and a lower frame 54 opposite to each other, and a left frame 52 and a right frame 53 opposite to each other, so as to define a flow guide space 500 that passes through from front to back as shown in FIG. 3. The upper parts of the left frame 52 and the right frame 53 are connected with a horizontal bridge. The pivot 60 is configured to pivotally connect a blade 70 that can swing up and down inside the diversion space 500. The blade 70 has a front face 71 and a back face 72 that are opposite to each other. A shaft seat 73 that can pivotally connect the pivot 60 is installed on the top edge of the front face 71, so that the front face 71 and the back face 72 of the blade 70 have the tendency to close the diversion space 500 at any time. The intermediate element 50 extends upward from the lower frame 54 to form a limiting member 80, so that the limiting member 80 blocks the bottom edge of the back face 72 of the blade 70, so as to ensure that the blade 70 can unidirectionally close the diversion space. The space 500 is used to allow the front of the blade 70 to withstand a positive wind force as shown in FIG. 5, and the guide space 500 limits the dispersion of the positive wind force, thereby more efficiently applying the torque of the rotating main shaft 30. However, when the back 72 of the blade 70 withstands a reverse wind force opposite to the positive wind force as shown in FIG. 6, the blade 70 can be pushed away from the limiting member 80, and then swing upward with the pivot 60 as the fulcrum, so as to release the reverse wind force and reduce wind resistance, thereby further improving the efficiency of rotating the main shaft 30.

Please refer to Figures 1 and 2, which reveal that the present invention can be equipped with two sets of pneumatic units A spaced apart above and below the main shaft 30, and further control the two sets of pneumatic units A to be arranged at equal angles of 60 degrees with the main shaft 30 as the center, so that when subjected to positive wind force as shown in Figure 5, a matching blade 70 and the intermediate element 50 can apply the torque required to rotate the main shaft 30, and the blade 70 separated by 180 degrees can swing upward to reduce wind resistance. Therefore, the present invention preferably has an even number of the radial rod 40, the intermediate element 50, the pivot 60, and the blade 70.

Please refer to Figure 5. To improve the efficiency of the pneumatic unit A in rotating the main shaft 30, the intermediate element 50 may be provided with a fold 55 extending downward from the upper frame 51 without interfering with the swing of the blade 70, so that it is far away from the limiting member 80 to compensate for the gap formed between the blade 70 and the upper frame 51, so that the front face 71 of the blade 70 and the intermediate element 50 have a larger area to withstand the positive wind force. For the same reason, the fold 55 can also be equivalently set on the left frame 52 and the right frame 53.

Please refer to Figures 3 and 6. In order to enable the back side 72 of the blade 70 to quickly close the diversion space 500 after being subjected to the reverse wind force, a counterweight W is installed on the back side 72 of the blade 70 relative to the upper side of the pivot 60.

From the above description, it can be seen that the new model has at least the following improvements:

1. Long service life: The structural design of the new type uses the limiting member 80 to block the bottom edge of the back side 72 of the blade 70, so as to rotate the main shaft 30 in response to the blade 70 bearing the positive wind force, so that the resistance arm formed by the limiting member 80 from the pivot 60 can be relatively extended compared with the previous case, so the stress borne by the limiting member 80 can be relatively reduced, so the limiting member 80 is less likely to be damaged. In addition, the structural design can easily increase the area of the limiting member 80 abutting the blade 70, so as to further extend the service life of the limiting member 80 and the blade 70.

2. Effectively improve power generation efficiency: The present invention defines a guide space 500 through an intermediate element 50 for the blade 70 to be pivoted therein. The structural design enables the blade 70 to bear the positive wind force and drive the main shaft 30 to rotate. The guide space 500 can reduce the positive wind force from spreading along the front face 71 of the blade 70, thereby more efficiently applying the torque of the rotating main shaft 30, thereby effectively improving the power generation efficiency.

In summary, this new type is unprecedented in the existing structure. It has the advantages of long service life and effective improvement of power generation efficiency. There is no similar public disclosure in similar products. Therefore, it meets the requirements of new patents and is applied for in accordance with the law. However, the above is only a better implementation example of this new type, and it cannot be used to limit the scope of implementation of this new type. That is, all equal changes and modifications made according to the scope of patent application of this new type are within the scope of this new type.

40: Radial

50:Intermediary Components

500: diversion space

51: Upper frame

52: Left frame

53:Right frame

54: Lower frame

60: pivot

70:Leaves

71: Front

72: Back

73: Axle seat

80: Restricted items

W: Counterweight

Claims (7)

A vertical axis wind power generation device comprises at least: a base; a generator mounted on the base; a main shaft mounted on the generator, which is vertical to the ground; and a wind driven unit mounted on the main shaft, wherein a plurality of radiating rods radiating outward are mounted on the main shaft; an intermediate element is mounted on the radiating rod, and the intermediate element is provided with a horizontally arranged pivot axis for pivotally connecting a blade that can swing up and down. It has a front and back facing each other, and the intermediate element is provided with a limiting part below the pivot that can stop the bottom edge of the back of the blade, so that the front of the blade can withstand a positive wind force to rotate the main shaft, but when the back of the blade withstands a reverse wind force opposite to the positive wind force, the blade can be pushed away from the limiting part, and then swing upward with the pivot as the fulcrum to release the reverse wind force. As described in claim 1, the intermediate element defines a guide space that runs through the front and back, and the pivot is bridged on the upper part of the guide space to pivot the blade inside the guide space. The front edge of the blade is equipped with a shaft seat that can support the pivot, so that the front and back of the blade have the tendency to close the guide space at any time, and the limiting member can ensure that the blade closes the guide space in one direction, so that when the front of the blade is subjected to the positive wind force, the guide space limits the dispersion of the positive wind force, thereby more efficiently applying the torque of the rotating main shaft. As described in claim 2, the intermediate element is an upper frame and a lower frame that are opposite to each other vertically, and a left frame and a right frame that are opposite to each other horizontally, which are used to define the diversion space; the upper parts of the left frame and the right frame are bridged with the pivot. In the vertical axis wind turbine generator described in claim 3, the lower frame is provided with the limiting member. In the vertical axis wind turbine described in claim 1, 2, 3 or 4, a counterweight is installed on the back of the blade above the pivot. For the vertical axis wind turbine described in claim 1, 2, 3 or 4, the main axis is coaxially mounted with a detachable sleeve through a bolt, and the sleeve is fixed with the radiating rods at equal angles so that the radiating rods radiate outward horizontally with the main axis as the center. For the vertical axis wind turbine generator described in claim 1, 2, 3 or 4, two sets of wind-driven units are installed at intervals above and below the main axis, and the two sets of wind-driven units' radial rods, intermediate elements and blades are further controlled to be arranged at equal angles of 60 degrees with the main axis as the center.

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