Gravity-free suspension fan blade rotating mechanism and vertical axis micro-wind generator

Abstract

The utility model discloses a kind of gravityless suspension fan blade rotating mechanism and vertical axis breeze generator, including fan blade middle shaft, fan blade connecting framework, fan blade, first magnet and second magnet.Fan blade connecting framework is fixedly connected on fan blade middle shaft, and fan blade is fixed on the outside of fan blade connecting framework;The magnetism of first magnet and second magnet is repulsive, and both are oppositely arranged along the axial direction of fan blade middle shaft;First magnet is in abutment on fan blade connecting framework, and second magnet is fixed below first magnet, by the magnetism repulsion between two magnets, first magnet exerts vertical upward force on fan blade connecting framework.Fan blade connecting framework, fan blade and other connecting components are subjected to a lifting force from bottom to up, offset the gravity load on fan blade middle shaft, so that fan wheel group achieves gravityless effect, can be gravityless started in breeze state, so that the starting wind speed of wind generator is lower, energy loss in rotating process is smaller, and power generation efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation, specifically to a gravity-free suspended wind turbine rotation mechanism. Background Technology

[0002] Wind turbines can be mainly divided into two categories: horizontal axis wind turbines and vertical axis wind turbines. Vertical axis wind turbines are those whose rotor axis is perpendicular to the ground or the mounting plane. Vertical axis wind turbines are characterized by their compact structure, flexibility in adapting to wind direction changes, and low starting wind speed.

[0003] The general working principle of a vertical axis wind turbine is as follows: Under the influence of airflow, the blades on the generator rotate, causing the blade shaft connected to the blades to rotate as well. The blade shaft serves as the power input shaft of the generator, inputting rotational power into the generator, thus creating the conditions for power generation. Inside the generator, the relative motion between the rotor and stator cuts magnetic field lines, thereby generating an electromotive force; the blade shaft is connected to the rotor, driving the rotor to rotate at high speed.

[0004] More specifically, an intermediate connecting frame is also provided between the fan blades and the fan blade shaft to transmit rotational motion. This intermediate connecting frame can be a circular wheel structure, or a rectangular or other shaped frame structure; multiple fan blades are evenly installed on its side. When the fan blades are acted upon by airflow and rotate in a circumferential direction, they drive the intermediate connecting frame to rotate, which in turn drives the fan blade shaft to rotate inside the generator.

[0005] In vertical axis wind turbines, it's understandable that the blades inevitably carry a certain rotational load during rotation. This is because the central axis of the blades houses the aforementioned connecting frame, as well as components such as bearings, fasteners, and seals. The weight of these components contributes to the rotation of the central axis, which has always been a significant factor affecting the high-speed startup of micro-wind turbines in light wind conditions. The traditional approach is to reduce the weight of the blades by changing their materials, thereby lowering the starting wind speed. However, there is a lower limit to the weight of the blades, and this method doesn't address the load problem at its source. No matter how light the blades are, the rotational load still exists and will always affect the generator's startup in light winds. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, one objective of this utility model is to provide a zero-gravity wind turbine blade suspension and rotation mechanism, and the other objective is to provide a vertical axis micro wind turbine including such a zero-gravity suspension and rotation mechanism, which can solve the problem that the blades of existing vertical axis wind turbines have rotational loads and cannot start well in light wind conditions.

[0007] This utility model is achieved through the following technical solution: A weightless levitating fan blade rotation mechanism includes: a fan blade central shaft rotatably mounted and fixed relative to the rotor of a generator; a fan blade connecting frame fixedly connected to the fan blade central shaft; a plurality of fan blades circumferentially fixed to the outer side of the fan blade connecting frame, so that the fan blades drive the fan blade central shaft to rotate; a first magnet and a second magnet that magnetically repel each other, the first magnet and the second magnet being arranged opposite each other along the axial direction of the fan blade central shaft; the top surface of the first magnet abutting against the bottom of the fan blade connecting frame, and the second magnet being fixedly mounted below the first magnet, so that the first magnet is subjected to magnetic repulsion and exerts a vertically upward force on the fan blade connecting frame.

[0008] Furthermore, the zero-gravity levitation fan blade rotation mechanism further includes: a magnetic levitation upper sleeve; the cavity of the magnetic levitation upper sleeve has a partition, the first magnet is placed inside the magnetic levitation upper sleeve, the top surface of the first magnet abuts against the bottom surface of the partition, and the top surface of the partition abuts against the fan blade connecting frame.

[0009] Furthermore, the zero-gravity levitation fan blade rotation mechanism also includes: a magnetic levitation lower sleeve; the magnetic levitation lower sleeve has a magnet receiving groove, and the second magnet is placed in the magnet receiving groove; the magnetic levitation lower sleeve is fixedly installed.

[0010] Furthermore, the fan blade connecting frame is a central circular flywheel; the central circular flywheel has a circular structure, and multiple fan blades are circumferentially fixed on the outer side of the central circular flywheel; the fan blade central shaft is fixedly connected inside the central circular flywheel.

[0011] Furthermore, the central circular flywheel includes a circular wheel mounting shaft located at the axial center; the lower end of the circular wheel mounting shaft is housed within the magnetic levitation upper sleeve, and the top of the partition plate of the magnetic levitation upper sleeve abuts against the circular wheel mounting shaft.

[0012] Furthermore, the gravity-free levitating fan blade rotation mechanism further includes: a connecting pin; the wheel mounting shaft has a wheel pin hole in the radial direction, the fan blade central shaft has a fan blade pin hole in the radial direction, and the connecting pin is laterally inserted into the wheel mounting shaft and the fan blade central shaft.

[0013] Furthermore, the upper end of the lower magnetic levitation sleeve is fitted into the cavity of the upper magnetic levitation sleeve, so that the first magnet and the second magnet are arranged facing each other.

[0014] Furthermore, there are two central circular flywheels, which are distributed along the axial direction of the central axis of the fan blade.

[0015] A vertical axis micro wind generator includes the aforementioned gravity-free levitated blade rotation mechanism.

[0016] Furthermore, the vertical axis micro wind generator also includes a generator disk, which is located below the blade connecting frame; the second magnet is fixed to the generator disk for a fixed arrangement; the generator disk has a built-in rotor and stator; the central shaft of the blade is fixed relative to the rotor to drive the rotor to rotate.

[0017] Compared with existing technologies, the beneficial effects that this utility model can achieve are as follows: When the wind turbine blades are subjected to airflow, they rotate, causing the connecting frame and the central shaft to rotate as well. This rotation of the central shaft powers the generator. Because the central shaft is vertically arranged, its rotation is subject to a load due to the weight of the connecting frame and the blades themselves.

[0018] In this invention, by placing a first magnet and a second magnet with magnetic repulsion below the wind turbine connecting frame, and since the second magnet is fixedly installed, the magnetic repulsion force drives the first magnet to move upward or has a tendency to move upward, applying a vertically upward force to the wind turbine connecting frame. Thus, the wind turbine connecting frame and the wind turbine are subjected to a levitation force lifting them from the bottom up, counteracting the gravitational load on the wind turbine's central axis. Depending on the magnitude of the gravitational load, a suitable magnet is selected to achieve an appropriate levitation force, thereby enabling the wind turbine assembly to achieve a weightless effect. In light wind conditions, the rotating parts, such as the wind turbine, can start without gravity, resulting in a lower starting wind speed, less energy loss during rotation, and higher power generation efficiency for the wind turbine. Attached Figure Description

[0019] Figure 1 The image shown is a perspective view of this utility model; Figure 2 The figure shown is a cross-sectional view along the AA direction of this utility model; Figure 3 The image shown is a front view of this utility model; Figure 4 The figure shown is a cross-sectional view of the present invention along the BB direction; Figure 5 The diagram shown is an exploded view of the magnetic levitation structure. Figure 6 The diagram shown is a schematic of the magnetic levitation upper sleeve structure; Figure 7 The diagram shows the structure of the magnetic levitation upper sleeve.

[0020] In the diagram: 10, fan blade central shaft; 20, fan blade connecting frame; 21, wheel mounting shaft; 30, fan blade; 40, first magnet; 50, second magnet; 60, upper magnetic levitation sleeve; 61, partition plate; 70, lower magnetic levitation sleeve; 71, magnet receiving groove; 80, connecting pin. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] This utility model discloses a gravity-free suspended wind blade 30 rotation mechanism, which is applied to a vertical axis wind turbine.

[0026] This utility model includes a central shaft 10 for the wind turbine, a connecting frame 20 for the wind turbine, wind turbine blades 30, a first magnet 40, and a second magnet 50. The central shaft 10 is rotatably mounted, with its lower end connected to the rotor inside the generator. The connecting frame 20 is fixedly connected to the central shaft 10 and can be a wheel-shaped, rectangular, or other shape. Multiple wind turbine blades 30 are evenly and uniformly fixedly mounted on the outer side of the connecting frame 20 at certain intervals. When the wind turbine blades 30 are subjected to airflow, they rotate circumferentially, causing the connecting frame 20 and the central shaft 10 to rotate around their axis. The first magnet 40 and the second magnet 50 are magnetically repulsive and are arranged opposite each other along the axial direction of the central shaft 10. The top surface of the first magnet 40 abuts against the bottom of the connecting frame 20, and the second magnet 50 is fixedly positioned below the first magnet 40. Through the magnetic repulsion between the two magnets, the first magnet 40 exerts a vertically upward force on the connecting frame 20.

[0027] When the fan blade 30 is subjected to airflow, it rotates, causing the fan blade connecting frame 20 and the fan blade central shaft 10 to rotate as well. The rotation of the fan blade central shaft 10 provides power to the generator. Since the fan blade central shaft 10 is vertically arranged, the weight of the fan blade connecting frame 20, the fan blade 30, and other connecting components on the fan blade central shaft 10 will impose a load on the fan blade central shaft 10 when it rotates.

[0028] In this invention, by setting a first magnet 40 and a second magnet 50 with magnetic repulsion below the wind turbine connecting frame 20, and since the second magnet 50 is fixedly installed, the magnetic repulsion force will drive the first magnet 40 to move upward or have a tendency to move upward, thus applying a vertically upward force to the wind turbine connecting frame 20. In this way, the wind turbine connecting frame 20, the wind turbine 30, and other connecting components on the wind turbine central shaft 10 are essentially subjected to a levitation force lifting them from the bottom up, offsetting the gravitational load borne by the wind turbine central shaft 10. Based on the magnitude of the gravitational load, magnets of appropriate specifications are selected to achieve a magnetic repulsion force of suitable size, thereby enabling the wind turbine assembly to achieve a weightless effect. In a light breeze, the rotating parts such as the wind turbine 30 can start without gravity, resulting in a lower starting wind speed, less energy loss during rotation, and higher power generation efficiency for the wind turbine.

[0029] Preferably, the present invention further includes a magnetic levitation upper sleeve 60 for mounting the first magnet 40. The magnetic levitation upper sleeve 60 has a cavity containing a partition 61. The first magnet 40 is housed within the cavity of the magnetic levitation lower sleeve 70, with the top surface of the first magnet 40 abutting against the bottom surface of the partition 61, and the top surface of the partition 61 abutting against the fan blade connecting frame 20. When the first magnet 40 is subjected to magnetic repulsion, it pushes the magnetic levitation upper sleeve 60 upwards, which in turn pushes the fan blade connecting frame 20 upwards, thereby applying a levitation force to the load portion.

[0030] Preferably, the present invention further includes a magnetically levitated lower sleeve 70 for mounting the second magnet 50. The lower sleeve has a magnet receiving groove 71 inside, and the second magnet 50 is placed inside the magnet receiving groove 71. The magnetically levitated lower sleeve 70 is fixedly installed, ensuring that the position of the second magnet 50 remains constant.

[0031] Preferably, the fan blade connecting frame 20 adopts a central circular flywheel in the shape of a wheel, and multiple fan blades 30 are circumferentially fixed on the outer side of the central circular flywheel, while the fan blade central shaft 10 is fixedly connected inside the central circular flywheel.

[0032] More preferably, the central flywheel includes a wheel mounting shaft 21 located at the axial center. The lower end of the wheel mounting shaft 21 is housed inside the magnetic levitation upper sleeve 60. The top of the partition 61 of the magnetic levitation upper sleeve 60 abuts against the wheel mounting shaft 21, thereby facilitating the guiding installation of the magnetic levitation upper sleeve 60.

[0033] Preferably, the fan blade connecting frame 20 and the fan blade central shaft 10 are fixed together by a radial connecting pin 80. The wheel mounting shaft 21 has a wheel pin hole in the radial direction, and the fan blade central shaft 10 has a fan blade 30 pin hole in the radial direction. The connecting pin 80 is laterally inserted into the wheel mounting shaft 21 and the fan blade central shaft 10. The load of the fan blade connecting frame 20, the fan blade 30, and other rotating parts is pressed onto the fan blade central shaft 10 by the connecting pin 80. Through the action of levitation force, the fan blade connecting frame 20 pushes the connecting pin 80 upward, thereby effectively counteracting the load pressing down on the fan blade central shaft 10.

[0034] Preferably, the upper end of the lower magnetic levitation sleeve 70 is fitted into the cavity of the upper magnetic levitation sleeve 60, so that the first magnet 40 and the second magnet 50 are arranged facing each other; this embodiment facilitates the rapid guidance and installation between the upper magnetic levitation sleeve 60 and the lower magnetic levitation sleeve 70.

[0035] Preferably, two central circular flywheels are provided, distributed along the axial direction of the central axis 10 of the fan blades. This allows for a stable installation connection of the fan blades 30. Of course, other numbers of central circular flywheels can also be provided, depending on the specific size requirements of the fan blades 30 or the equipment.

[0036] This utility model also discloses a vertical axis micro wind generator, including the aforementioned zero-gravity suspended wind blade 30 rotation mechanism. Any vertical axis micro wind generator that employs the same or substantially the same zero-gravity suspended wind blade 30 rotation mechanism should be within the protection scope of this utility model.

[0037] Preferably, the vertical axis micro wind turbine also includes a generator disk, which serves as the power generation part of the device and is located below the blade connecting frame 20. A second magnet 50 is fixedly installed relative to the generator disk, thus achieving a fixed arrangement of the second magnet 50 and applying a vertically upward magnetic repulsive force to the first magnet 40. The blade central shaft 10 is fixed relative to the rotor, thereby driving the rotor to rotate, causing relative movement between the rotor and stator, cutting magnetic field lines and generating a corresponding induced electromotive force.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A zero-gravity suspended fan blade rotation mechanism, characterized in that, include: The rotating fan blade shaft is fixed relative to the generator rotor; The fan blade connecting frame is fixedly connected to the fan blade central shaft; Multiple fan blades are circumferentially fixed to the outer side of the fan blade connecting frame, so that the fan blades drive the fan blade central axis to rotate; A first magnet and a second magnet that are magnetically repulsive are arranged opposite each other along the axial direction of the central axis of the wind turbine blade; the top surface of the first magnet abuts against the bottom of the wind turbine blade connecting frame, and the second magnet is fixedly disposed below the first magnet, so that the first magnet is subjected to magnetic repulsive force and exerts a vertically upward force on the wind turbine blade connecting frame.

2. The zero-gravity suspended fan blade rotation mechanism as described in claim 1, characterized in that, The zero-gravity levitation fan blade rotation mechanism further includes: a magnetic levitation upper sleeve; the cavity of the magnetic levitation upper sleeve has a partition, the first magnet is placed inside the magnetic levitation upper sleeve, the top surface of the first magnet abuts against the bottom surface of the partition, and the top surface of the partition abuts against the fan blade connecting frame.

3. The zero-gravity suspended fan blade rotation mechanism as described in claim 2, characterized in that, The zero-gravity levitation fan blade rotation mechanism further includes: a magnetic levitation lower sleeve; the magnetic levitation lower sleeve has a magnet receiving groove, and the second magnet is placed in the magnet receiving groove; the magnetic levitation lower sleeve is fixedly installed.

4. The zero-gravity suspended fan blade rotation mechanism as described in claim 2, characterized in that, The fan blade connecting frame is a central circular flywheel; the central circular flywheel has a circular structure, and multiple fan blades are circumferentially fixed on the outer side of the central circular flywheel; the fan blade central shaft is fixedly connected inside the central circular flywheel.

5. The zero-gravity suspended fan blade rotation mechanism as described in claim 4, characterized in that, The central circular flywheel includes a circular wheel mounting shaft located at the center of the axis; the lower end of the circular wheel mounting shaft is housed within the magnetic levitation upper sleeve, and the top of the partition plate of the magnetic levitation upper sleeve abuts against the circular wheel mounting shaft.

6. The zero-gravity suspended fan blade rotation mechanism as described in claim 5, characterized in that, The weightless levitating fan blade rotation mechanism further includes: a connecting pin; the wheel mounting shaft has a wheel pin hole in the radial direction, the fan blade central shaft has a fan blade pin hole in the radial direction, and the connecting pin is laterally inserted into the wheel mounting shaft and the fan blade central shaft.

7. The zero-gravity suspended fan blade rotation mechanism as described in claim 3, characterized in that, The upper end of the lower magnetic levitation sleeve is fitted into the cavity of the upper magnetic levitation sleeve, so that the first magnet and the second magnet are arranged facing each other.

8. The zero-gravity levitation fan blade rotation mechanism as described in claim 4, characterized in that, The number of central circular flywheels is two, and they are distributed along the axial direction of the central axis of the fan blades.

9. A vertical axis micro wind generator, characterized in that, Including the zero-gravity levitation fan blade rotation mechanism as described in any one of claims 1 to 8.

10. The vertical axis micro wind generator as described in claim 9, characterized in that, The vertical axis micro wind generator also includes a generator disk located below the blade connecting frame; the second magnet is fixed to the generator disk for a fixed arrangement; the generator disk contains a rotor and a stator; the central shaft of the blade is fixed relative to the rotor to drive the rotor to rotate.

Images