Wind gathering device and equipment driving the wind gathering device

Abstract

Disclosed are a wind concentrator and a device driven by the wind concentrator. The device comprises a plurality of blades and a rotating shaft. The blades are arranged along a spatial spiral trajectory around the rotating shaft, with the number of spiral turns formed by the blades being at least 1.5. Within one effective spiral turn, at least three blades are distributed. The windward surface of each blade is inclined toward the rotating shaft, with the blade's root being the portion closest to the rotating shaft. The inner normal of the windward surface of each blade at the center of the root forms an acute angle with the axis of rotation away from the spatial spiral trajectory. The wind concentrator, guided by the blades, can form a cyclone within the device that rotates in the same direction as the device, improving wind energy utilization and allowing it to be output as power for various devices.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power engineering, and in particular to a wind gathering device and equipment driving the wind gathering device. Background Art

[0002] Wind energy is a clean, pollution-free, renewable energy source. my country boasts abundant wind energy resources, with approximately 1 billion kW of exploitable wind energy reserves. Of this, approximately 253 million kW are onshore (based on data at a height of 10 meters above the ground), and approximately 750 million kW are offshore, totaling 1 billion kW. Wind power is driven by converting wind kinetic energy into mechanical energy, which is then applied to other applications such as power generation.

[0003] Existing wind concentrators can generally be divided into horizontal-axis wind drives and vertical-axis wind drives. Horizontal-axis wind concentrators have blades with a horizontal rotation axis, essentially parallel to the ground or wind direction. Because the blades are fixed in orientation and are affected by wind direction, they cannot fully utilize wind energy from all directions. This requires specialized wind direction measurement devices and yaw devices for wind direction correction, significantly impacting wind energy utilization. Furthermore, airflow interference occurs between the rotor and the blades. According to wind tunnel tests conducted by the China Aerodynamics Research and Development Center, the wind energy utilization rate of small horizontal-axis wind turbines is measured to be between 23% and 29%. Vertical-axis wind concentrators have a vertical rotor axis, meaning their rotation is independent of wind direction. Horizontal-axis wind drives cannot always face the wind, resulting in "wind loss." Vertical-axis wind drives, on the other hand, do not have this problem. From this perspective, vertical-axis wind drives have a higher wind energy utilization rate than horizontal-axis wind drives. However, the more complex flow around vertical-axis rotors and poor starting performance have long hindered the development of vertical-axis wind turbines.

[0004] There are some existing vertical axis wind focusing devices, which can improve the wind energy utilization efficiency to a certain extent by further increasing the rotational torque caused by the lift / drag generated by each blade. However, the improvement efficiency is limited, and there are high requirements for the blade tail vortex and the shape of the blade, the production cost is high, and the small vortices generated on the blades are uncontrollable, the internal airflow is chaotic, and other factors may cause the blades to collide with the internal cyclone and the blades due to problems such as the rotation speed during the rotation process, thereby generating a reaction force on the rotation of the blades, resulting in affected wind energy utilization. In addition, regardless of lift or drag type vertical axis wind drive, the wind dissipates after acting on the blades and cannot be further utilized, resulting in the inability to further improve the wind energy utilization rate. Summary of the Invention

[0005] In order to solve the technical problems of low wind energy utilization rate and large loss in the driving process of wind gathering devices commonly found in the prior art, the present invention proposes a wind gathering device and equipment driving the wind gathering device to solve the above problems.

[0006] According to a first aspect of the present invention, a wind concentrating device is proposed, comprising a plurality of blades and a rotating shaft. The plurality of blades are arranged to be distributed along a spatial spiral trajectory around the rotating shaft, and the number of spiral turns formed by the plurality of blades is at least greater than 1.5 turns. At least three blades are distributed within one effective number of spiral turns. The windward surface of each blade is inclined toward the rotating shaft, with the portion of the blade near the rotating shaft being the root. The inner normal of the windward surface of each blade at the center of the root forms an acute angle with the axis of rotation away from the spatial spiral trajectory. The wind concentrating device can rotate under the influence of wind and, guided by the orientation and angle of the blades, directs airflow into the interior of the spatial spiral trajectory, forming a cyclone in the same direction as the device's rotation. Under the influence of the cyclone, a certain pressure difference is formed, directing the external airflow into the internal cyclone, thereby increasing the device's utilization of wind energy.

[0007] Further preferably, the spatial spiral track is a spatial logarithmic spiral track that gradually expands from top to bottom around the rotation axis. This structure can guide the airflow from the outside to the inside of the spatial spiral track and from the top to the bottom to form a cyclone.

[0008] Preferably, the device further comprises a spiral guide structure, which is arranged in a spatial spiral structure around the rotating shaft, with multiple blades spaced apart on the spiral guide structure, and the head and / or tail of the spiral guide structure is fixedly connected to the rotating shaft. This structure can form a certain spatial structure between the spiral guide structure and the rotating shaft to facilitate the formation of an internal cyclone.

[0009] Preferably, the spiral guide structure includes a spatial spiral structure that gradually contracts or expands from top to bottom. The spatial spiral structure of the spiral guide structure can form a corresponding spatial spiral cyclone.

[0010] More preferably, the outline of the spatial spiral structure is obtained by splicing one or more segments of a logarithmic spiral line. With this arrangement, the airflow can be guided to rotate along the logarithmic spiral trajectory to form a logarithmic spiral cyclone.

[0011] Preferably, a line segment extending from the root of the blade toward the direction away from the root serves as the guide line of the windward surface of the blade, and a line segment along the width of the blade serves as the generatrix of the windward surface. The segments of the guide line and the generatrix are taken from a section of a logarithmic spiral. This structure of the blade can provide more guided airflow for the cyclone during rotation.

[0012] Preferably, the device further comprises a fixed shaft, wherein the rotating shaft is a hollow structure and is rotatably sleeved on the fixed shaft. This structure can improve the stability of the rotating shaft.

[0013] More preferably, the device further includes a wind deflector that blocks the leeward surface that blocks the rotation direction of the blades and always guides the airflow toward the windward surface that drives the blades to rotate. The wind deflector can guide the wind toward the windward surface to ensure efficient rotation of the device.

[0014] Further preferably, the deflector is rotatably mounted on the fixed shaft via a connecting rod. This structure allows for adjustability of the deflector, allowing the relative position of the deflector and the device to be adjusted according to wind direction, so that the deflector always directs airflow toward the windward surface that drives the blades to rotate, maximizing the rotation efficiency of the device.

[0015] According to a second aspect of the present invention, a device driven by a wind concentrator is provided, comprising the wind concentrator, wherein the input shaft of the device is connected to the rotation shaft. The rotation of the wind concentrator is used as the input of the device, thereby providing a continuous power source.

[0016] The wind gathering device of the present invention forms a spatial spiral structure through blades around the rotating axis. The wind acts on the windward surface of the blades to drive the device to rotate. The direction of the blades and the angle with the axial direction of the rotating axis are used to make part of the wind flow into the interior of the spatial spiral structure under the guidance of the blades, and finally converge inside the spatial spiral structure to form a cyclone with the same rotation direction of the device. On the one hand, the cyclone can assist the rotation of the blades from the inside, and on the other hand, it can form a certain negative pressure inside the cyclone. Through the pressure difference of the external environment of the device, the airflow outside the device is guided into the interior of the spatial spiral structure. The airflow in this direction can also act on the windward surface of the blades, thereby improving the utilization rate of wind energy, and further by setting a wind guide plate, the wind is guided to the side of the windward surface that drives the blades to rotate, thereby ensuring the efficient rotation of the wind gathering device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many of the expected advantages of the embodiments will be readily apparent as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with respect to each other. Like reference numerals designate corresponding similar parts.

[0018] Figure 1 is a structural schematic diagram of a wind gathering device according to an embodiment of the present invention;

[0019] Figure 2is a structural schematic diagram of a blade according to a specific embodiment of the present invention;

[0020] Figure 3a -f is a schematic diagram of the angle of the blade according to a specific embodiment of the present invention;

[0021] Figure 4 is a structural schematic diagram of a wind gathering device according to another specific embodiment of the present invention;

[0022] Figure 5 is a structural schematic diagram of a spiral guide structure according to a specific embodiment of the present invention;

[0023] Figure 6 is a structural schematic diagram of a wind gathering device with a wind guide plate according to a specific embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of the air guide operation of the air guide plate according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0025] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and are illustrated by illustrative specific embodiments in which the present invention may be practiced. To this end, directional terms, such as "top," "bottom," "left," "right," "up," "down," etc., are used with reference to the orientation of the figures being described. Because the components of the embodiments may be positioned in several different orientations, directional terms are used for illustrative purposes and are in no way limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. Therefore, the following detailed description should not be adopted in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0026] Figure 1 FIG. 1 shows a schematic structural diagram of a wind gathering device according to an embodiment of the present invention. Figure 1As shown, the wind concentrating device includes a fixed shaft 1, a rotating shaft 2, blades 3, a spiral guide structure 4, and a base 5. The fixed shaft 1 is vertically mounted on the base 5 and reinforced at the connection between the base 5 and the fixed shaft 1 by multiple support rods to enhance the stability of the device. The rotating shaft 2 is a hollow structure that fits over the fixed shaft 1. Bearings at the upper and lower ends of the rotating shaft 2 cooperate with the fixed shaft 1, enabling the rotating shaft 2 to rotate relative to the fixed shaft 1. The spiral guide structure 4 is spatially spiral-shaped and fixedly connected to the rotating shaft 2 at both ends, allowing it to rotate synchronously with the rotating shaft 1. Multiple blades 3 are spaced apart along the spatial spiral trajectory of the spiral guide structure 4. The spiral guide structure 4 is a spatial spiral structure comprising at least 1.5 effective spiral turns, with at least three blades 3 arranged within each effective spiral turn. Preferably, the blades 3 are arranged along the spiral trajectory at intervals of a certain arc length. As the number of spiral turns increases, the number of blades 3 within each effective turn increases, ensuring effective force application to the device and improving rotation efficiency.

[0027] According to the definition of generatrix in Science Popularization China, a curved surface figure can be regarded as the trajectory of a moving line when it moves. The moving line that forms the curved surface is called a generatrix. In this application, the windward surface of the blade 3 can also be regarded as the surface formed by the movement of the generatrix along the guide line. Figure 2 As can be seen from the structural diagram of the middle blade, the blade 3 has a windward surface and a leeward surface. The windward surface of the blade 3 is formed by the movement of the generatrix 32 controlled by the guide line 31, wherein the length direction away from the root of the blade 3 is the guide line 31, and the width direction perpendicular to the length direction is the generatrix 32. When the blade 3 is set on the wind concentrating device, the thickness end surface of the blade 3 close to and facing the rotating shaft 2 is defined as the root 36 of the blade. Figure 2 In the figure, the root 36 of the blade is represented by a curve that is the same as the generatrix of the blade 3 at the thickness end surface. The center of the windward surface of the root 36 of the blade is defined as the root center 37. The spatial angle relationship between the blade 3 and the rotating shaft 2 is specifically described below in conjunction with an embodiment of a specific angle setting of the blade 3:

[0028] like Figure 3aAs shown in the schematic diagram of the blade angle, each blade 3 has a windward surface that faces the rotation axis 2 and is inclined toward the rotation axis 2. The spatial spiral trajectory is a spatial logarithmic spiral trajectory that expands clockwise from top to bottom. The windward surfaces of the blades face counterclockwise, so when driven by wind, the wind concentrating device will rotate clockwise. The arrangement of blades 3 on the spatial spiral trajectory in this manner creates a spatial angular relationship between blades 3 and the spiral trajectory (the direction of the blades toward the root is oriented in the direction of rotation of the spiral trajectory). Wind guided by blades 3 is directed and converged inward of the spatial spiral trajectory, rather than being directed to diffuse outside the device. The angle β between the inner normal of the root center of each blade 3 on its windward surface (i.e., the normal vector of the tangent plane between the root center and the windward surface at the root center in this embodiment) and the axis of the rotation axis 2 in the rotation direction away from the spatial spiral trajectory (in this embodiment, the spatial spiral trajectory rotates downward, away from the installation direction, i.e., upward) is an acute angle. The setting of this angle can make the windward surface of the blade 3 have a tendency to face upward and toward the rotation axis under the premise that the windward surfaces of the blades are facing the rotation axis 2 and inclined toward the rotation axis 2, so as to guide the airflow toward the inside of the spatial spiral trajectory, and finally converge inside the spatial spiral trajectory to form a cyclone with the same rotation direction as the spatial spiral trajectory (i.e., clockwise and downward in this embodiment). The cyclone can generate a certain negative pressure inside the spatial spiral trajectory, so that the air above is attracted into the wind gathering device, and at the same time, the negative pressure generated by the cyclone can be converted into the airflow sucked into the spiral trajectory from above into a driving force acting on the windward surface, further driving the wind gathering device to rotate, and the wind energy utilization rate and the rotation efficiency of the wind gathering device are further improved.

[0029] In an embodiment opposite to the above embodiment, if Figure 3f As shown, the windward surface of the blade 3 faces clockwise, thereby driving the wind gathering device to rotate counterclockwise, so that the rotation direction of the spatial spiral trajectory is counterclockwise upward. At this time, the angle β between the inner normal of the root center of each blade 3 on its windward surface and the axis of the rotation axis 2 in the rotation direction away from the spatial spiral trajectory (i.e., downward direction) is an acute angle, so that the windward surface of the blade has a downward tendency, and through the limitation of the windward surface being inclined toward the rotation axis, the guide line of the blade 3 is biased toward the counterclockwise upward near the root, and multiple airflows enter the interior of the spatial spiral trajectory along the guide line of the blade, and finally converge inside the spatial spiral trajectory to form a cyclone with an upward rotation direction, thereby generating a negative pressure that draws airflow downward. Since the windward surface of the blade 3 has a downward tendency, the airflow sucked into the interior of the spiral trajectory below will be converted into a driving force acting on the windward surface, thereby improving the utilization rate of wind energy.

[0030] In one preferred embodiment, Figure 3bAs shown in the angle diagram of the middle blade, at least part of the guide line 31 of the blade 3 at the root of the blade can extend to the windward surface of another blade in the rotation direction of the spiral trajectory of the blade space and have an intersection. There are multiple guide lines 31 on the trajectory of the generatrix 32, but at least part of the guide line 31 at the root of the blade tangent 34 can extend to the windward surface of another blade. Preferably, the larger the portion, the better the secondary impact effect of the guided airflow on the other blade. In this embodiment, the guide line 31 passing through the midpoint of the generatrix 32 is used as an example for explanation. It is assumed that the intersection point of the tangent 34 with the windward surface of the other blade is A, and the tangent 34 at the root of the blade extends to the windward surface of the other blade in the rotation direction. The direction in which the tangent 34 of the guide line at the root of the blade extends toward the intersection A is the direction of the airflow when the airflow leaves the root of the blade. The wind acting on the blade 3 can be guided to the other blade, forming a secondary impact on the other blade, thereby improving energy utilization and preventing the wind from being directly discharged from the device and dissipated into the air after acting on the blade 3.

[0031] Continue to refer Figure 3c The blade angle diagram in FIG. 1 intercepts the horizontal plane projection of the blade guide line within an effective number of turns. A tangent line 34' is drawn through the intersection A toward the blade root on the windward surface of the blade at the intersection A. The angle α between the projection lines of the tangent line 34 and the tangent line 34' on the horizontal plane toward the rotation axis 2 is an obtuse angle. It should be recognized that Figure 3a The obtuse angle is the angle in space. In order to express it more intuitively, Figure 3b The projection angle in the figure is used as an explanation. The technical effects that can be achieved by both are actually to prevent the airflow from diffusing to the outside of the device, while continuing to guide the airflow of the secondary impact inward. It should be noted that the obtuse angle cannot be too close to 90 degrees. The closer it is to 90 degrees, the less conducive it is for the blades to guide the airflow inward. In a further preferred embodiment, the obtuse angle is set to be greater than 135 degrees. Through this angle setting, the airflow acting on blade 3 can continue to impact other blades, and the airflow is guided from the outside to the inside, following the direction of rotation of the spiral trajectory and converging on the inside of the spiral guide structure 4. Multiple airflows eventually form cyclones inside the spiral guide structure 4. The negative pressure formed by the cyclones inside the spiral guide structure 4 can attract external airflow into the device, further improving the utilization rate of wind energy.

[0032] In a specific embodiment, a mounting portion 33 is provided at the root of the blade. Mounting portion 33 may be a threaded post for mounting and securing to the spiral guide structure. Guide lines 31 and generatrix 32 may be straight lines, curves, or a combination thereof, and the resulting windward surface of the blade may be a plane, a curved surface, or a combination thereof. Preferably, guide lines 31 and generatrix 32 are both derived from logarithmic spirals. The windward surface of the blade formed by the guide lines and generatrix of the logarithmic spiral can coordinate with the spatial logarithmic spiral trajectory to better guide the airflow into the interior of the spatial logarithmic spiral trajectory, forming a cyclone with a similar logarithmic spiral trajectory.

[0033] In a specific embodiment, continue to refer to Figure 3d The blade angle is shown in the schematic projection diagram of the horizontal plane at the center of the blade root. The tangent direction of the guide line 31 at the blade root installation point is set toward the inner side of the spiral trajectory. That is, the guide line 31 has an intersection B with the spiral trajectory line 42 (assuming it is the root center). At this intersection B, the tangent 34 of the guide line 31 and the tangent 43 of the spiral trajectory at the intersection B form an angle γ. Preferably, this angle γ is an acute angle. Setting this angle can facilitate the installation of the blade on the spiral trajectory and can also guide its flow to converge in a direction close to the tangent direction of the spiral trajectory. In addition, it can increase the swept area of ​​the blade to a certain extent, improving the rotation efficiency of the device. In other embodiments, a normal line 35 pointing to the axis of the rotation shaft is drawn through the intersection B, and the first tangent 34 is located in the area of ​​the angle θ formed by the second tangent 43 and the normal line 35. When the first tangent 34 is close to the normal line 35, the angle γ may also be an obtuse angle. At this angle, the effect of guiding the airflow toward the inside of the spiral trajectory is relatively general. Part of the airflow will be guided to the outer edge of the blade and then diffused to the outside of the wind gathering device. If the angle γ is greater than the angle θ, the windward surface of the blade will turn away from the rotation axis. At this time, after the wind acts on the windward surface of the blade, most of it will be guided to the outside of the wind gathering device, and the airflow cannot be guided to the inside of the spiral trajectory.

[0034] Continue to refer Figure 3e The blade angle diagram in the figure shows a schematic diagram of the blades in the top view direction. The spatial spiral trajectory 42 rotates clockwise, and multiple blades 3 are arranged at intervals on the spatial spiral trajectory 42. The windward surfaces of the blades 3 are all inclined toward the rotation axis. Under the action of wind, a cyclone is formed in the spatial spiral trajectory in the same direction as the rotation of the spatial spiral trajectory 42. The cyclone forms an air pressure difference in the spatial spiral trajectory, attracting the air above into the device. At this time, the airflow entering the device can also act on the windward surface of the blade from the vertical direction, pushing the blade to rotate again, and relying on the arrangement between the blades, each blade has a partial windward surface exposed in the top view direction, so that each blade of the device can obtain the force of the airflow attracted inward due to the air pressure difference, thereby improving the rotation efficiency of the wind gathering device.

[0035] In summary, the blades 3 are arranged along a spatial spiral trajectory around the rotating shaft 2. Combined with the fact that each blade has a windward surface facing the rotating shaft 2 and tilted toward the rotating shaft 2, the direction of the guide line pointing to the root of the blade can be biased toward the rotation direction of the spatial spiral trajectory. This arrangement can guide the airflow to the inside of the spatial spiral trajectory and flow along the rotation direction of the spatial spiral trajectory to eventually converge to form a cyclone. If the direction of the guide line pointing to the root of the blade 3 is opposite to the rotation direction of the spatial spiral trajectory, the windward surface of the blade will be in a direction away from the rotating shaft. In this state, the blade cannot guide the airflow to the inside of the spatial spiral trajectory, but instead guides it to the outside of the wind gathering device. In the above embodiment, the windward surface of the blade is concave, that is, the concave surface of the windward surface faces the rotating shaft 2 and is tilted at an angle so that the blade 3 has a direction toward the axis of the rotating shaft 2, which can be specifically defined according to the rotation direction of the spatial spiral trajectory. The inclination angle can be defined as the angle formed by the inner normal of the windward surface of each blade at the center of the root and the axis of the rotation direction away from the spatial spiral trajectory. The angle is an acute angle. With the combined effect of the arrangement of the spatial spiral trajectory, the inclination of the windward surface of the blade toward the rotation axis, and the acute angle formed by the inner normal of the windward surface of the blade at the center of the root and the axis of the rotation direction away from the spatial spiral trajectory, a cyclone is formed inside the spatial spiral trajectory. The pressure difference between the inside and outside of the device guides the external airflow into the inside of the device. At this time, the orientation and angle of the blade enable its windward surface to face the part of the airflow guided into the inside of the device, driving the wind gathering device to rotate more efficiently.

[0036] In other embodiments, Figure 4 FIG. 1 shows a schematic structural diagram of a wind gathering device according to another embodiment of the present invention. Figure 4 As shown, the blade 3 is set as a bending structure. The bending structure can be understood as a generatrix consisting of two line segments connected end to end and forming a certain angle. The guide line is the blade crease line. The blade is also arranged along the spatial spiral trajectory of the spiral guide structure 4. The spatial spiral trajectory can be selected from the Archimedean spiral. Figure 1 The blade angle setting in Figure 3 also enables blade 3 to guide wind to act on another blade in the direction of rotation of the spiral trajectory, forming a secondary impact, and guide the airflow toward the interior of the spiral guide 4. Multiple airflows ultimately converge inside the spiral guide structure 4 to form a cyclone, improving the overall wind energy utilization rate. Alternatively, the spatial spiral trajectory can also adopt other spatial spiral lines, such as cylindrical spirals, equiangular spirals, etc. In addition, the windward surface formed by the movement of blade 3 along the guide line 31 to control the generatrix 32 can also gradually increase in the direction away from the blade root to obtain a larger windward area.

[0037] In a specific embodiment, Figure 5 FIG. 1 shows a schematic structural diagram of a spiral guide structure according to a specific embodiment of the present invention. Figure 5 As shown, the spiral guide structure 4 is in the shape of a spatial spiral, specifically a three-dimensional spiral or cylindrical spiral structure, and the spatial spiral structure forms at least more than 1.5 spiral turns, and at least 3 blades are distributed within an effective spiral turn. By being fixedly connected to the rotating shaft 2 at both ends, a certain degree of cavity structure can be formed between it and the rotating shaft 2, so as to facilitate the formation of a cyclone in the same direction as the rotation direction of the device. In other embodiments, depending on the overall structure, size and stability, only the upper end or the lower end of the spiral guide structure 4 can be fixed to the rotating shaft 2. In addition, in addition to arranging multiple blades 3 on the rotating shaft 2 by means of the spiral guide structure 4, the mounting holes 41 of the blades 3 can be pre-set on the spiral guide structure 4, without the need to adjust the angle of each blade individually, which facilitates large-scale production, assembly and maintenance. However, it should be recognized that other blade fixing methods can also be used, such as using a connecting rod to fix the blade 3 to the surface of the rotating shaft 2, and arranging the blade 3 to form a spatial spiral structure with at least 1.5 spiral turns. The blade 3 also presents an angle in space relative to the rotating shaft 2 that is the same or close to the blade angle shown in Figure 3, ensuring that there is also space between the blade 3 and the rotating shaft 2 where a cyclone can be formed, and the above-mentioned technical effect of the present application can also be obtained during rotation.

[0038] Continue to refer Figure 6 , Figure 6 FIG. 1 shows a schematic structural diagram of a wind gathering device with a wind guide plate according to a specific embodiment of the present invention. Figure 6 As shown, a wind guide plate 6 can also be provided on the wind gathering device. The wind guide plate 6 can be a flat surface or a curved surface. The wind guide plate 6 is fixed therebetween by using an upper fixed plate 61 and a lower fixed plate 62. The upper fixed plate 61 and the lower fixed plate 62 are rotatably provided on the fixed shaft 1 through bearings respectively, so as to facilitate adjustment of the angle of the wind guide plate according to the wind direction. The wind guide plate 6 can be rotated around the fixed shaft as the axis according to the wind direction to adjust the angle. The rotation angle of the wind guide plate 6 is controlled by the yaw system and the braking positioning is combined to make the wind entering the wind gathering device always toward the side of the windward surface of the blade, blocking the leeward surface of the blade on the device in this wind direction, overcoming the resistance of the leeward surface to the wind, and improving the rotation efficiency of the wind gathering device.

[0039] Figure 7 FIG. 1 shows a schematic diagram of the air guide plate according to a specific embodiment of the present invention. Figure 7As shown, when the wind acts on the wind concentrating device, it will act on the windward surface of the blades on one side of the wind concentrating device and the leeward surface of the blades on the other side at the same time, resulting in low rotation efficiency of the wind concentrating device. By utilizing the setting of the wind guide plate 6, the blades on the leeward surface side are blocked, and this part of the wind is guided by the wind guide plate 6 and applied to the blades on the side of the windward surface, thereby reducing the force on the leeward surface and allowing the wind concentrating device to rotate more efficiently.

[0040] In some other embodiments, the fixed shaft 1 may not be provided separately, and the rotating shaft 2 may be used directly as the output shaft to transmit the rotational motion. Figure 1-5 The spatial spiral trajectory of the spiral guide structure 4 shown in the figure is a spatial spiral structure that gradually expands from top to bottom, but it should be recognized that the spatial spiral trajectory of the spiral guide structure 4 can also be a spatial spiral structure that gradually shrinks from top to bottom, or a cylindrical spiral structure, or a combination of gradually shrinking and gradually expanding spatial spiral structures. The size of the blades can also be adjusted incrementally or incrementally according to the above spatial spiral structure to form a gradually shrinking, gradually expanding or a combination of these spatial spiral structures or a cylindrical spiral structure on the outer extension of the blades. This configuration can form a variety of combinations of blades and spiral trajectories, which can be determined according to actual design requirements.

[0041] The present invention also proposes a device driven by a wind gathering device, which utilizes the rotating shaft of the above-mentioned wind gathering device to be connected to the input shaft of the device as the power source of the device. The device can be a series of devices such as generators and air compressors, and the continuous output of the rotating shaft of the wind gathering device is utilized to provide continuous output for the device. The transmission therebetween can be transmitted through various transmission methods such as couplings and gears. At the same time, devices such as reducers can be configured according to torque requirements to meet the power requirements of various types of equipment.

[0042] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and changes are within the scope of the claims of the present invention and their equivalents, the present invention is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be considered as limiting the scope.

Claims

1. A wind gathering device comprising a plurality of blades and a rotating shaft, characterized in that: The multiple blades are arranged to be distributed along a spatial spiral trajectory around the rotation axis, and the number of spiral turns formed by the multiple blades is at least greater than 1.5 turns, wherein at least 3 blades are distributed within an effective number of spiral turns, and the windward surface of each blade is inclined toward the rotation axis, with the part of the blade close to the rotation axis as the root, and the angle formed by the inner normal of the windward surface of each blade at the center of the root and the axis away from the rotation direction of the spatial spiral trajectory is an acute angle, and the spatial spiral trajectory is a spatial logarithmic spiral trajectory that gradually expands from top to bottom, and also includes a spiral guide structure, which is arranged in a spatial spiral structure around the rotation axis, and the multiple blades are arranged at intervals on the spiral guide structure, and the head and / or tail of the spiral guide structure is fixedly connected to the rotation axis, and the airflow is guided into the interior of the spatial spiral trajectory by the guidance of the orientation and angle setting of the blades to form a cyclone with the same rotation direction as the wind gathering device, and a certain pressure difference can be formed under the action of the cyclone to guide the external airflow to the internal cyclone.

2. The wind gathering device according to claim 1, characterized in that: The spiral guide structure includes a spatial spiral structure that gradually contracts or expands from top to bottom.

3. The wind gathering device according to claim 2, characterized in that: The outline of the spatial spiral structure is obtained by splicing one or more segments of the logarithmic spiral.

4. The wind gathering device according to claim 1, characterized in that: A line segment in the length direction extending from the root of the blade toward away from the root is used as the guide line of the windward surface of the blade, and a line segment in the width direction of the blade is used as the busbar of the windward surface. The line segments of the guide line and the busbar are taken from a section of a logarithmic spiral.

5. The wind gathering device according to claim 1, characterized in that: It also includes a fixed shaft, the rotating shaft is a hollow structure, and the rotating shaft is rotatably sleeved on the fixed shaft.

6. The wind gathering device according to claim 5, characterized in that: The invention further comprises a wind deflector which blocks the leeward surface which blocks the rotation direction of the blade and always guides the airflow toward the side of the windward surface which drives the blade to rotate.

7. The wind gathering device according to claim 6, characterized in that: The air guide plate is rotatably arranged on the fixed shaft through a connecting rod.

8. An apparatus driven by a wind gathering device, characterized in that: The wind concentrating device comprises the wind concentrating device according to any one of claims 1 to 7, wherein the input shaft of the device is connected to the rotating shaft.

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