TW202500860A - Variable fan blade vertical wind turbine - Google Patents

Abstract

The present invention provides a variable fan blade vertical wind turbine, it contains: A rotating shaft with a pivot bar in the radial direction; At least one fan blade, the pivot is provided at one of the ends of said pivot bar relative to the shaft; And at least one of the pivot bars is provided with a counterweight element at a lower end position away from the pivot, and the center of gravity of the counterweight element is positioned lower than said pivot bar; In this way, the counterweight element is optionally equipped with a counterweight block, so that in the case of low wind speed, the pivot rod will be slightly horizontal by the weight of the counterweight element, so as to drive the fan blade far away from the spindle and in an open position, in order to enhance the overall wind area of the creation, and to increase the transmission torque to the spindle; The centrifugal force of the counterweight element will lift the pivot rod and the fan blade to pivot and close in the direction of the spindle, which can reduce the wind area of the fan blade and reduce the torque on the spindle; By means of this, the invention can mechanically adjust the wind area and torque according to the wind speed to enhance the efficiency of wind power generation without the need to install related active devices or brakes and other related speed reduction and backstop components. And the overall structure of the present invention is simple, the volume is small, and the durability is good, so it can greatly reduce its manufacturing and installation costs, so that it can help to carry out a wide range of construction in a wide range, so as to help improve the performance of wind power generation. Layout, and then can achieve the effect and goal of energy saving and environmental protection.

Description

Variable blade vertical wind turbine

The present invention provides a variable blade vertical wind turbine, particularly a type of vertical wind turbine that is provided with a counterweight element, so that when the wind force is relatively low, the pivot rod and the blades can be extended by the weight of the counterweight element to increase the wind receiving area and torque, and when the wind speed is relatively high, the centrifugal force generated by the counterweight element is beneficial to drive the pivot rod and the blades to lift, pivot and retract, thereby reducing the wind receiving area and torque, and the wind receiving area and torque can be automatically adjusted in response to the wind force by mechanical means.

In recent years, global warming has become increasingly serious. Countries around the world have proposed energy conservation, carbon reduction and environmental protection strategies, and have further developed the application of alternative energy and renewable energy. Currently, wind power generation is the first choice for large-scale renewable energy generation equipment. However, since wind speed is an uncontrollable variable, excessive or insufficient wind speeds will not allow wind turbines to generate electricity normally. In addition, the speed and power generation efficiency of wind turbines are not the same at different wind speeds. Therefore, how to effectively use wind energy to generate electricity is the main research topic for wind power generation today.

Since the pitch angle, length and guide area of the wind turbine blades all affect the rotation speed of the blades, at the same wind speed, the greater the pitch angle of the blades, the greater the torque and air resistance will be. Conversely, the smaller the pitch angle of the blades, the smaller the torque and air resistance will be. Vertical wind turbines rarely have a configuration that can adjust the blade inclination according to wind speed. Those that have such designs usually have more complicated structures, are difficult to assemble, and are more expensive. In addition, there are many limitations in actual application, making it difficult to apply them effectively.

In view of this, we, the inventors, have devoted ourselves to further research on vertical wind turbines that can control the speed according to the wind speed, and have started to carry out research and development and improvement in order to solve the above problems with a better invention. After continuous testing and modification, the present invention was born.

Therefore, the purpose of the present invention is to solve the above problems. To achieve the above purpose, we, the inventors, provide a variable blade vertical wind turbine, which comprises: a rotating shaft, which is radially pivoted with at least one pivot rod, so that the pivot rod can pivot along the axial direction corresponding to the rotating shaft; and at least one blade, which is correspondingly pivoted at one end of the pivot rod relative to the rotating shaft; and at least one of the pivot rods is disposed at a lower end position away from the rotating shaft. There is a counterweight element, and the center of gravity of the counterweight element is lower than the pivot rod, so that the pivot rod is subjected to the weight of the counterweight element and rotates relative to the shaft, so that the corresponding fan blade is in an extended position; and when the fan blade is subjected to force and drives the shaft and the pivot rod to rotate, the counterweight element generates a centrifugal force to lift up, thereby driving the pivot rod and the fan blade to pivot in the direction of the shaft and assume a retracted position.

According to the above-mentioned variable blade vertical wind turbine, the rotating shaft is further provided with at least one connecting seat, each of which is provided with a plurality of connecting components, and the pivot rod is correspondingly pivoted to one of the connecting components.

The variable blade vertical wind turbine described above further comprises at least one fixed blade, which is provided with at least one assembly element correspondingly fixed to at least one of the connecting components, and the fixed blade is fixed in the radial direction of the rotating shaft by the assembly element.

According to the above-mentioned variable blade vertical wind turbine, the counterweight element is arranged in a long strip shape.

According to the above-mentioned variable blade vertical wind turbine, the counterweight element and the pivot rod are arranged in a roughly T-shape.

According to the above-mentioned variable blade vertical wind turbine, the rotating shaft is arranged in a vertical position.

According to the above-mentioned variable blade vertical wind turbine, one end of the rotating shaft is correspondingly connected to a power generation device.

According to the above-mentioned variable blade vertical wind turbine, when the blade is in the unfolded position, the pivot rod and the shaft are slightly vertically arranged.

From the above description and configuration, it is apparent that the present invention mainly has the following advantages and effects, which are described in detail as follows:

1. The present invention arranges the pivot rod and the counterweight element so that in the initial state or when the wind speed is relatively low, the pivot rod will be supported by the weight of the counterweight element and can pivot to a horizontal position, so that the fan blades are far away from the rotating shaft and are in an unfolded position, thereby increasing the wind receiving area and increasing the torque for the transmission of the rotating shaft; and when the wind speed is relatively high, the counterweight element generates centrifugal force in response to the rotation of the rotating shaft and the fan blades, and the centrifugal force of the counterweight element will lift the counterweight element in the direction away from the rotating shaft, thereby driving the pivot rod and the fan blades to lift and pivot in the direction of the rotating shaft and close, so as to reduce the wind receiving area of the fan blades. It can also reduce the torque on the shaft, so that when the wind speed is too high, the speed of the shaft can be reduced to prevent the generator from being damaged due to the excessive speed. Therefore, the present invention does not need to set up related active devices, or brakes and other related deceleration and backstop components, and can mechanically adjust the wind receiving area and torque according to the wind speed to improve the efficiency of wind power generation. In addition, the overall structure of the present invention is simple, the volume is relatively small, and the durability is good, so its manufacturing and installation costs can be greatly reduced, so that it can be helpful for large-scale construction, so as to help improve the layout of wind power generation, and thus achieve the effect and goal of energy saving and environmental protection.

Regarding the technical means of our inventors, several preferred embodiments are described in detail below with reference to the drawings so that you can have a deeper understanding and recognize the present invention.

Please refer to Figures 1 to 3. The present invention is a variable blade vertical wind turbine, which includes:

A rotating shaft 1 is mainly used for vertical wind power generation, so the rotating shaft 1 is arranged vertically, and the rotating shaft 1 is radially pivoted with at least one pivot rod 2, so that the pivot rod 2 can pivot along the axial direction corresponding to the rotating shaft 1; and the rotating shaft 1 is configured to be connected to a power generation device 3 at one end thereof, so as to directly or indirectly transmit power to the power generation device 3 through the rotation of the rotating shaft 1, so as to generate power; and the method of transmitting power to the power generation device 3 and the mechanism of power generation are known technologies, so they are not described here in detail; and

At least one fan blade 4 is correspondingly pivoted at one end of the pivot rod 2 relative to the rotating shaft 1; and at least one of the pivot rods 2 is provided with a weight element 21 at the lower end position away from the rotating shaft 1, and the center of gravity of the weight element 21 is lower than the pivot rod 2, so that the pivot rod 2 is subjected to the weight of the weight element 21 and the pivot rod 2 is rotated relative to the rotating shaft 1, so that the corresponding fan blade 4 is in an extended position; and when the fan blade 4 is subjected to force and drives the rotating shaft 1 and the pivot rod 2 to rotate, the weight element 21 generates a centrifugal force F and is lifted, thereby driving the pivot rod 2 and the fan blade 4 to pivot in the direction of the rotating shaft 1 and to be in a retracted position.

Thus, since the center of gravity of the weight element 21 is lower than the pivot rod 2, in the initial state or when the wind speed is low, the pivot rod 2 equipped with the weight element 21 will be pivoted in the direction of gravity by the weight of the weight element 21, which will cause the fan blade 4 to be pivoted away from the rotating shaft 1 by the pivot of the pivot rod 2 and present the unfolded position as shown in Figures 1 and 3. At this time, since the fan blade 4 is far away from the rotating shaft 1, it has a larger wind receiving area and a longer lever arm length, so it can generate a larger torque on the rotating shaft 1. Therefore, when the wind is strong, the fan blade 4 will be more stable. Under the condition of lower speed, the wind force can more easily push the fan blades 4 to rotate the rotating shaft 1 and make the power generation device 3 generate electricity; and in order to maximize the distance between the fan blades 4 and the rotating shaft 1 when the fan blades 4 are in the unfolded position, the hinge mode between the pivot rod 2 and the rotating shaft 1 is configured so that when in the unfolded position, the pivot rod 2 and the rotating shaft 1 are slightly vertically arranged. Therefore, it can be known that the rotating shaft 1 and the pivot rod 2 can be configured through a limiting element (not shown) so that the pivot rod 2 can be parallel to the horizontal plane in the unfolded position. The configuration belongs to the known technology and will not be described in detail here.

On the contrary, as shown in FIG. 4 and FIG. 5, when the wind speed is high, the wind force acting on the fan blade 4 is larger, so the fan blade 4 will increase the speed of the rotating shaft 1 through the pivot 2, which will also increase the speed of the counterweight element 21 disposed on the pivot 2 rotating around the rotating shaft 1, thereby causing the counterweight element 21 to generate a centrifugal force F relative to the rotating shaft 1, and due to the original counterweight element 21 is located at the lower end of the pivot rod 2, and its center of gravity is lower than the pivot rod 2. Therefore, when the centrifugal force F is generated, the weight element 21 will gradually rise and move away from the rotation axis 1 in response to the increase in wind speed, which will also drive the pivot rod 2 and the fan blade 4 to gradually rise and move in a pivotal direction close to the rotation axis 1, so that the vertical distance between the fan blade 4 and the rotation axis 1 is reduced, thereby reducing the possible The torque generated and the overall wind-receiving area of the present invention can prevent the rotation speed of the shaft 1 from being too high, thereby preventing the generator 3 from being damaged. It can be known that the magnitude of the centrifugal force F generated by the counterweight element 21 is determined by the rotation speed of the shaft 1 driven by the wind. Therefore, the lifting angle of the counterweight element 21 and the corresponding distance between the fan blade 4 and the shaft 1 will vary according to the magnitude of the wind. When the rotation speed of the rotating shaft 1 is within a certain range, the counterweight element 21 can generate a corresponding centrifugal force F in response to the size of the wind speed, and can be lifted accordingly to control the distance between the fan blade 4 and the rotating shaft 1. This allows the present invention to fine-tune the lifting angle in response to the wind speed within a certain wind speed range, thereby improving the adaptability of the present invention to wind speed and achieving better power generation efficiency.

Among them, as for the pivot connection configuration between the rotating shaft 1 and the pivot rod 2, in one embodiment, the rotating shaft 1 is configured with at least one connecting seat 11 through its own extension or sleeve connection, and the connecting seat 11 is respectively provided with a plurality of connecting components 111, and the pivot rod 2 is correspondingly pivoted to one of the connecting components 111, and in order to facilitate the pivot rod 2 to stably transmit and fix the fan blade 4, it is preferred that, as shown in this embodiment, the rotating shaft 1 is provided with two connecting seats 11, and the connecting components 111 at the corresponding positions of different connecting seats 11 are respectively provided with A pivot rod 2 corresponding to each other, and the corresponding pivot rods 2 are respectively connected to the same fan blade 4, and one of the pivot rods 2 is provided with a counterweight element 21, and preferably, the counterweight element 21 is configured at the pivot rod 2 at a lower position to make the overall center of gravity of the present invention lower to improve its stability during operation; and in order to improve the stability of the present invention during rotation, in this embodiment, a total of three sets of fan blades 4 are provided, and the fan blades 4 are arranged at intervals of 120 degrees on the rotation plane of the shaft 1, but it is only an example for explanation and is not intended to be limiting.

As for the hinge method between the connecting component 111 and the hinge rod 2, in one embodiment, at least one corresponding hinge piece can be extended and provided respectively, and a hinge hole can be penetrated respectively, so that the connecting component 111 and the hinge rod 2 can be matched with each other through the hinge holes of their respective hinge pieces, and then a pin (not shown) can be passed through and fixed in the hinge hole to complete the hinge; and the hinge rod 2 and the fan blade 4 can also be hinged by means of the same hinge piece, hinge hole and pin, but they are only examples for explanation and are not limited to this.

As for the arrangement of the counterweight element 21, in one embodiment, it can be arranged in a long strip shape to lower its center of gravity as much as possible, so that it can be more easily lifted by rotation; and the counterweight element 21 and the pivot rod 2 are formed as an integral unit in one embodiment, and the overall arrangement is slightly T-shaped, so as to facilitate its molding and modular configuration; and preferably, the counterweight element 21 can also be further arranged with at least one counterweight block (not shown) at its bottom end, so that the counterweight element 21 can be more easily lifted by the larger centrifugal force F generated during rotation, and drive the pivot rod 2 and the fan blades 4 to be lifted and pivoted in a direction close to the rotation axis 1.

In a preferred embodiment, in order to further enhance the stability of the present invention during rotational power generation, it may further include at least one fixed blade 5, preferably a number corresponding to the number of the fan blades 4, and the fan blades 4 are arranged in a ring-shaped manner with intervals therebetween, so as to maintain their balance in the horizontal direction; and the fixed blades 5 are provided with at least one assembly element correspondingly fixed to at least one of the connecting parts 111, and the fixed blades 5 are fixed to the radial direction of the shaft 1 by the assembly element, so that regardless of the wind speed, the distance between the fixed blades 5 and the shaft 1 is equal and does not change with the wind speed, so as to help maintain stability during rotation.

In summary, the technical means disclosed in this invention can effectively solve the problems of knowledge and achieve the expected purpose and effect. Moreover, it has not been seen in publications and has not been publicly used before the application, and it has long-term progress. It is indeed an invention as referred to in the Patent Law. Therefore, I have filed an application in accordance with the law and sincerely pray that the Supreme Court will give a detailed review and grant the invention patent. I will be very grateful.

However, the above are only several preferred embodiments of the present invention, and should not be used to limit the scope of implementation of the present invention. In other words, all equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the invention specification should still fall within the scope of the present invention patent.

1: Rotating shaft 11: Connecting seat 111: Connecting parts 2: Pivot rod 21: Counterweight element 3: Generator 4: Fan blade 5: Fixed blade

Figure 1 is a three-dimensional schematic diagram of the present invention. Figure 2 is a three-dimensional exploded schematic diagram of the present invention. Figure 3 is a side view schematic diagram of the present invention in the unfolded position at the fan blade position. Figure 4 is a side view schematic diagram of the present invention in the folded position at the fan blade position. Figure 5 is a three-dimensional schematic diagram of the present invention in the folded position.

1: Rotation axis

11: Connector

111: Connecting parts

2: Pivot

21: Counterweight element

3: Power generation device

4: Fan blades

5: Fixed blades

Claims (8)

A variable blade vertical wind turbine comprises: a rotating shaft, which is radially pivoted with at least one pivot rod for pivoting the pivot rod in an axial direction corresponding to the rotating shaft; and At least one fan blade is correspondingly pivoted at one end of the pivot rod relative to the rotating shaft; and at least one of the pivot rods is provided with a counterweight element at the lower end position far from the rotating shaft, and the center of gravity of the counterweight element is lower than the pivot rod, so that the pivot rod is subjected to the weight of the counterweight element and rotates relative to the rotating shaft, so that the corresponding fan blade is in an extended position; and when the fan blade is subjected to force and drives the rotating shaft and the pivot rod to rotate, the counterweight element generates a centrifugal force and is lifted, thereby driving the pivot rod and the fan blade to pivot in the direction of the rotating shaft and be in a retracted position. As described in claim 1, the variable blade vertical wind turbine, wherein the rotating shaft is further provided with at least one connecting seat, each of the connecting seats is provided with a plurality of connecting components, and the pivot rod is correspondingly pivoted to one of the connecting components. The variable blade vertical wind turbine as described in claim 2 further includes at least one fixed blade, which is provided with at least one assembly element correspondingly fixed to at least one of the connecting parts, and the fixed blade is fixed in the radial direction of the rotating shaft by the assembly element. A variable blade vertical wind turbine as described in any one of claim 1 to claim 3, wherein the counterweight element is arranged in a long strip shape. A variable blade vertical wind turbine as described in claim 4, wherein the counterweight element and the pivot rod are arranged in a roughly T-shape. A variable blade vertical wind turbine as described in any one of claim 1 to claim 3, wherein the shaft is arranged upright. A variable blade vertical wind turbine as described in claim 6, wherein one end of the rotating shaft is correspondingly connected to a power generating device. A variable blade vertical wind turbine as described in any one of claim 1 to claim 3, wherein when the blade is in the unfolded position, the pivot rod and the shaft are arranged slightly vertically.

Images