Vertical axis fan device

Abstract

The invention provides a vertical axis fan device. The vertical axis fan device comprises a base; the rotating structure extends in the vertical direction, and the rotating structure is rotatably arranged on the base around the axis of the rotating structure; the moving part is movably arranged on the rotating structure in the axis direction of the rotating structure; the driving part is arranged between the moving part and the rotating structure and can drive the moving part to move; the multiple rotating blades are arranged at intervals in the circumferential direction of the rotating structure, the first end of each rotating blade is hinged to the rotating structure, and the second end of each rotating blade is a free end; the multiple connecting pieces and the multiple rotating blades are arranged in a one-to-one correspondence mode, the first ends of the connecting pieces are hinged to the rotating blades, and the second ends of the connecting pieces are hinged to the moving pieces; when the driving part drives the moving part to move, the rotating blade can be driven to swing around the first end of the rotating blade. According to the technical scheme, the problem that in the related technology, the rotating speed of a vertical axis fan cannot be controlled at the high wind speed, and consequently the vertical axis fan is prone to being damaged is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a vertical axis fan device. Background Art

[0002] In recent years, with the increasingly severe energy crisis and the gradual enhancement of environmental awareness, the development and application of wind energy-based vertical axis wind turbine devices are gradually emerging in the fields of new energy power generation such as wind energy, solar energy, and ocean energy.

[0003] Typically, a vertical axis fan device includes a fan base, a fan housing, a plurality of vertically arranged rotating blades, a fan rotating mechanism, etc. The fan rotating mechanism can drive the rotating blades to perform a rotating motion around an axis perpendicular to the rotating axis of the fan base.

[0004] The fan rotation mechanism may include a drive motor, a transmission belt and a transmission roller, or a gear box mechanism. The gear box mechanism may include a plurality of gears, a plurality of planetary gears, a plurality of sun gears, and a sun gear box. The drive motor drives the sun gear box to rotate, the sun gear box drives the planetary gears to rotate, the planetary gears drive the sun gear to rotate, and the sun gear drives the rotating blades to rotate.

[0005] The control method of the vertical axis fan device may include the following two methods:

[0006] In the first mode, the driving motor drives the sun gear box to rotate, the sun gear box drives the planetary gears to rotate, the planetary gears drive the sun gear to rotate, and the sun gear drives the rotating blades to rotate. When the vertical axis wind turbine device is in a normal wind power generation state, the driving motor drives the sun gear box to rotate, the sun gear box drives the planetary gears to rotate, the planetary gears drive the sun gear to rotate, and the sun gear drives the rotating blades to rotate.

[0007] When the vertical axis wind turbine device has no wind or the wind force is low and no power is generated, the drive motor stops driving the sun gear box to rotate, the sun gear box stops driving the planetary gears to rotate, the planetary gears stop driving the sun gear to rotate, and the sun gear stops driving the rotating blades to rotate.

[0008] In the second mode, the driving motor drives the sun gear box to rotate, the sun gear box drives the planetary gears to rotate, the planetary gears drive the sun gear to rotate, and the sun gear drives the rotating blades to rotate. When the vertical axis wind turbine device is windless or the wind force is small and no power is generated, the driving motor stops driving the sun gear box to rotate, the sun gear box stops driving the planetary gears to rotate, the planetary gears stop driving the sun gear to rotate, and the sun gear stops driving the rotating blades to rotate, and the vertical axis wind turbine device is in a windless and non-rotating state.

[0009] In the relevant technology, the vertical axis fan device cannot control the rotation speed and reduce the load under high wind speed. When facing extreme wind conditions, the vertical axis fan can only resist the extreme load by strengthening the structural strength, which increases the structural cost. At the same time, the excessively fast rotation speed also causes serious wear of components, reducing the reliability and economy of the fan. Summary of the invention

[0010] The main purpose of the present invention is to provide a vertical axis fan device to solve the problem in the related art that the vertical axis fan cannot control the rotation speed at high wind speed, which easily leads to damage thereof.

[0011] In order to achieve the above-mentioned purpose, the present invention provides a vertical axis fan device, comprising: a base; a rotating structure extending in a vertical direction, the rotating structure being rotatably arranged on the base around its axis; a movable member, being movably arranged on the rotating structure along the axial direction of the rotating structure; a driving member, being arranged between the movable member and the rotating structure, and being capable of driving the movable member to move; a plurality of rotating blades, the plurality of rotating blades being arranged at intervals along the circumference of the rotating structure, the first end of each rotating blade being hingedly connected to the rotating structure, and the second end of each rotating blade being a free end; a plurality of connecting members, being arranged one-to-one corresponding to the plurality of rotating blades, the first end of the connecting member being hingedly connected to the rotating blade, and the second end of the connecting member being hingedly connected to the moving member; wherein, when the driving member drives the moving member to move, it can drive the rotating blade to swing around the first end of the rotating blade.

[0012] Furthermore, the vertical axis fan device also includes a transmission structure, and the driving member drives the moving member to move relative to the rotating structure through the transmission structure.

[0013] Furthermore, the moving member includes a connecting cylinder, the rotating structure includes a rotating column, the connecting cylinder is sleeved on the rotating column, and the driving member and the transmission structure are both arranged between the connecting cylinder and the rotating column.

[0014] Furthermore, the interior of the rotating column has a accommodating cavity, and the top of the rotating column has a connecting hole connected to the accommodating cavity. The transmission structure includes a transmission gear and a transmission worm that are meshed together. The first end of the transmission worm is connected to the top wall of the connecting cylinder, and the second end of the transmission worm extends into the accommodating cavity through the connecting hole.

[0015] Furthermore, the vertical axis fan device also includes a first limit member, which is arranged on the top of the rotating column and can be abutted and matched with the top wall of the connecting tube.

[0016] Furthermore, the vertical axis fan device also includes a second limit member, which is arranged on the transmission worm and can be abutted and matched with the top wall of the accommodating cavity.

[0017] Furthermore, the vertical axis fan device also includes a plurality of friction reducing structures, which are arranged between the rotating column and the side wall of the connecting cylinder at intervals along the circumference of the rotating column.

[0018] Furthermore, the friction reduction structure includes rolling balls, and a plurality of accommodating recesses are provided on the side wall of the rotating column. The plurality of accommodating recesses are provided one-to-one correspondingly to the plurality of rolling balls. Each rolling ball is rotatably provided in the corresponding accommodating recess, and the rolling ball is abutted against the side wall of the connecting tube.

[0019] Furthermore, a plurality of strip grooves are arranged on the inner wall of the connecting tube, and the plurality of strip grooves are arranged in one-to-one correspondence with the plurality of rolling balls, the rolling balls are located in the strip grooves, and the bottom of the strip grooves is arc-shaped.

[0020] Further, the connecting member includes auxiliary blades.

[0021] According to the technical solution of the present invention, the rotating structure is rotatably arranged on the base, and the rotating structure extends in a vertical manner and can rotate around its axis. The moving member is movably arranged on the rotating structure, and the driving member is arranged between the moving member and the rotating structure and can drive the moving member to move. A plurality of rotating blades are arranged at intervals along the circumference of the rotating structure, and the first end of each rotating blade is hingedly connected to the rotating structure, and a plurality of connecting members are arranged one-to-one with the plurality of rotating blades, and the two ends of the connecting member are respectively hingedly connected to the rotating blades and the moving member. Through the above-mentioned arrangement, when the driving member drives the moving member to move, the rotating blades can be driven to swing under the action of the connecting member, so that the angle between the rotating blades and the horizontal plane can be changed, that is, when the wind speed is too large, the plurality of rotating blades are contracted, so as to avoid the rotating speed of the rotating structure being too fast, so as to effectively protect the vertical axis fan device. Therefore, the technical solution of the present application effectively solves the problem that the vertical axis fan in the related art cannot control the rotation speed at high wind speed and is easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a vertical axis fan device according to the present invention is shown;

[0024] Figure 2 Shows Figure 1 Schematic diagram of the exploded structure of the vertical axis fan device;

[0025] Figure 3 Shows Figure 2 A partial structural schematic diagram of a vertical axis fan device;

[0026] Figure 4 Shows Figure 1 A schematic side view of a vertical axis fan device;

[0027] Figure 5 Shows Figure 4 A schematic cross-sectional view of a vertical axis fan device in the direction of AA;

[0028] Figure 6 Shows Figure 4 BB section diagram of a vertical axis fan device.

[0029] The above drawings include the following reference numerals:

[0030] 10. Base; 20. Rotating structure; 21. Rotating column; 211. Accommodating chamber; 212. Accommodating recess; 30. Moving member; 31. Connecting cylinder; 311. Strip groove; 40. Driving member; 50. Rotating blade; 60. Connecting member; 70. Transmission structure; 71. Transmission gear; 72. Transmission worm; 81. First limit member; 82. Second limit member; 90. Friction reduction structure; 91. Rolling ball. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0034] like Figure 1 , Figure 2 as well as Figure 4 As shown, in this embodiment, the vertical axis fan device includes: a base 10, a rotating structure 20, a moving member 30, a driving member 40, a plurality of rotating blades 50 and a plurality of connecting members 60. The rotating structure 20 extends in the vertical direction, and the rotating structure 20 is rotatably arranged on the base 10 around its axis. The moving member 30 is movably arranged on the rotating structure 20 along the axial direction of the rotating structure 20. The driving member 40 is arranged between the moving member 30 and the rotating structure 20, and can drive the moving member 30 to move. A plurality of rotating blades 50 are arranged at intervals along the circumference of the rotating structure 20, and the first end of each rotating blade 50 is hingedly connected to the rotating structure 20, and the second end of each rotating blade 50 is a free end. A plurality of connecting members 60 are arranged one by one with a plurality of rotating blades 50, and the first end of the connecting member 60 is hingedly connected to the rotating blade 50, and the second end of the connecting member 60 is hingedly connected to the moving member 30. Wherein, when the driving member 40 drives the moving member 30 to move, it can drive the rotating blade 50 to swing around the first end of the rotating blade 50.

[0035] The technical scheme of the present embodiment is applied, and the rotating structure 20 is rotatably arranged on the base 10, and the rotating structure 20 extends in a vertical manner and can rotate around its axis. The moving member 30 is movably arranged on the rotating structure 20, and the driving member 40 is arranged between the moving member 30 and the rotating structure 20 and can drive the moving member 30 to move. A plurality of rotating blades 50 are arranged at intervals along the circumference of the rotating structure 20, and the first end of each rotating blade 50 is hingedly connected with the rotating structure 20, and a plurality of connecting members 60 are arranged one by one with a plurality of rotating blades 50, and the two ends of the connecting member 60 are respectively hingedly connected with the rotating blade 50 and the moving member 30. Through the above-mentioned arrangement, when the driving member 40 drives the moving member 30 to move, the rotating blade 50 can be driven to swing under the effect of the connecting member 60, so that the angle between the rotating blade 50 and the horizontal plane can be changed, that is, when the wind speed is too large, a plurality of rotating blades 50 are contracted, so as to avoid the rotating speed of the rotating structure 20 being too fast, so as to effectively protect the vertical axis fan device. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that the vertical axis fan cannot control the rotation speed at high wind speed, which easily leads to its damage.

[0036] Specifically, this design enables the vertical axis wind turbine device to automatically adjust the angle between the rotating blades 50 and the rotating column 21 according to the change of wind speed, so as to maintain a high wind energy conversion efficiency under different wind speed conditions, and is suitable for wind power generation, ventilation and other scenarios. Through this adaptive adjustment mechanism, the vertical axis wind turbine device can adjust the angle of the rotating blades 50 to capture more wind energy when the wind speed is low, and reduce the angle between the rotating blades 50 and the rotating column 21 when the wind speed is high to avoid excessive load. This dynamic adjustment capability significantly improves the operating efficiency and stability of the vertical axis wind turbine device, especially in areas with abundant wind resources, such as coastal areas, mountains and open areas, and can achieve continuous and efficient wind energy conversion.

[0037] like Figures 2 to 5 As shown, in this embodiment, the vertical axis fan device further includes a transmission structure 70, and the driving member 40 drives the moving member 30 to move relative to the rotating structure 20 through the transmission structure 70. The addition of the transmission structure 70 not only improves the driving efficiency, but also makes the layout of the driving member 40 more flexible, so as to facilitate accurate angle adjustment of the rotating blades 50 in a limited space.

[0038] Specifically, the flexibility and precision of the transmission structure 70 enable the vertical axis wind turbine device to fully utilize limited wind energy resources when installed on a roof or balcony.

[0039] like Figures 2 to 5As shown, in this embodiment, the moving member 30 includes a connecting cylinder 31, the rotating structure 20 includes a rotating column 21, the connecting cylinder 31 is sleeved on the rotating column 21, and the driving member 40 and the transmission structure 70 are both arranged between the connecting cylinder 31 and the rotating column 21. The above structural design greatly simplifies the assembly process of the vertical axis wind turbine device. At the same time, the sleeve structure between the connecting cylinder 31 and the rotating column 21 ensures the stability of the moving member 30 during axial movement, and is suitable for large-scale production and installation of wind farms.

[0040] It should be noted that this structural design not only reduces the assembly and maintenance costs of the vertical axis wind turbine device, but also improves its reliability in large-scale wind farm applications. The tight fit between the connecting tube 31 and the rotating column 21 ensures that the moving member 30 can move smoothly along the axial direction when driven by the driving member 40, reducing the shaking and wear during axial movement, and is particularly suitable for wind power projects that require large-scale wind turbine installation and long-term operation, such as large-scale offshore wind farms or onshore wind power parks.

[0041] like Figures 2 to 5 As shown, in this embodiment, the interior of the rotating column 21 has a housing chamber 211, the top of the rotating column 21 has a connecting hole communicating with the housing chamber 211, the transmission structure 70 includes a transmission gear 71 and a transmission worm 72 that are meshed, the first end of the transmission worm 72 is connected to the top wall of the connecting cylinder 31, and the second end of the transmission worm 72 extends into the housing chamber 211 through the connecting hole. This internal transmission design not only protects the transmission structure 70 from the influence of the external environment, but also makes the appearance of the vertical axis wind turbine device neater, reduces maintenance costs, and is suitable for wind energy utilization in harsh environments such as oceans and deserts.

[0042] like Figures 2 to 5 As shown, in this embodiment, the internal transmission design not only improves the durability of the transmission structure 70, but also reduces the impact of the external environment on the transmission efficiency. In environments with harsh natural conditions such as oceans and deserts, the internal transmission structure can effectively resist challenges such as salt spray corrosion and sand and dust wear, maintain a long-term stable operating state, reduce maintenance frequency and cost, and provide a solid technical foundation for wind energy development in these extreme environments.

[0043] like Figures 2 to 5 As shown, in this embodiment, the vertical axis fan device further includes a first stopper 81, which is disposed at the top of the rotating column 21, and can abut against the top wall of the connecting tube 31. The provision of the first stopper 81 effectively prevents the connecting tube 31 from exceeding a predetermined range when moving axially, thereby ensuring the safe operation of the vertical axis fan device.

[0044] like Figures 2 to 5As shown, in this embodiment, the vertical axis wind turbine device further includes a second stopper 82, which is disposed on the transmission worm 72, and the second stopper 82 can abut against the top wall of the accommodating cavity 211. The addition of the second stopper 82 further improves the stability of the transmission structure 70, ensures the precise control of the driving member 40 during the driving process, and is suitable for wind power stations with high requirements for wind energy conversion efficiency. The use of the second stopper 82 in conjunction with the transmission worm 72 not only improves the accuracy during the transmission process, but also enhances the rigidity of the transmission structure 70.

[0045] like Figures 2 to 6 As shown, in this embodiment, the vertical axis wind turbine device further includes a plurality of friction reduction structures 90, which are arranged between the rotating column 21 and the side wall of the connecting cylinder 31 at intervals along the circumference of the rotating column 21. The arrangement of the friction reduction structure 90 significantly reduces the friction loss during the operation of the vertical axis wind turbine device, improves the overall operation efficiency, and is suitable for wind power generation projects that require long-term continuous operation.

[0046] like Figures 2 to 6 As shown, in this embodiment, the introduction of the friction reduction structure 90 greatly improves the operating efficiency and stability of the vertical axis wind turbine device, especially in wind power generation projects that require long-term continuous operation, reduces friction loss, reduces operating costs, and also extends the service life of the wind turbine, providing a more economical and environmentally friendly solution for wind power generation, which is particularly suitable for those wind power projects that pursue sustainable development.

[0047] like Figures 2 to 6 As shown, in this embodiment, the friction reduction structure 90 includes a rolling ball 91, and a plurality of accommodating recesses 212 are provided on the side wall of the rotating column 21. The plurality of accommodating recesses 212 are provided one-to-one with the plurality of rolling balls 91, and each rolling ball 91 is rotatably provided in the corresponding accommodating recess 212, and the rolling ball 91 is abutted against the side wall of the connecting cylinder 31. The use of the rolling ball 91 converts the sliding friction into rolling friction, further reduces the friction force, improves the response speed and adjustment accuracy of the vertical axis fan device, and is suitable for a wind power generation system that needs to respond quickly to wind speed changes. The use of the rolling ball 91 not only reduces the friction force, but also improves the response speed and adjustment accuracy of the fan device to wind speed changes. Under rapidly changing wind speed conditions, such as gusts or sudden changes in wind direction, this rapid response capability is crucial to maintaining the stability and efficiency of the fan device, and helps to continuously capture and convert wind energy in a rapidly changing wind environment, providing a more stable and efficient operation guarantee for the wind power generation system.

[0048] like Figures 2 to 6As shown, in this embodiment, a plurality of strip grooves 311 are provided on the inner wall of the connecting tube 31, and the plurality of strip grooves 311 are provided in one-to-one correspondence with the plurality of rolling balls 91, and the rolling balls 91 are located in the strip grooves 311, and the bottom of the strip grooves 311 is arc-shaped. The arc-shaped design of the strip grooves 311 enables the rolling balls 91 to move more smoothly during the movement, reduces the friction resistance, and prolongs the service life of the vertical axis fan device, which is suitable for wind power generation application scenarios that pursue high reliability and low maintenance costs. The cooperation between the strip grooves 311 and the rolling balls 91 not only improves the running smoothness of the moving part 30, but also prolongs the service life of the vertical axis fan device.

[0049] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, in this embodiment, the connecting member 60 includes auxiliary blades. The addition of auxiliary blades not only enhances the stability of the wind turbine device, but also improves the wind energy capture efficiency, and is suitable for areas with low wind speeds and need to enhance wind energy utilization efficiency, such as urban high-rise buildings, mountains, etc.

[0050] Specifically, the setting of auxiliary blades enhances the performance of the vertical axis fan device under low wind speed conditions, especially in low wind speed environments such as urban high-rise buildings and mountains. It can improve the wind energy capture efficiency by increasing the wind capture area. The stabilizing effect of the auxiliary blades also ensures the balance of the fan during operation, reduces vibration and noise, and provides a quieter and more efficient technical solution for wind energy utilization in urban environments. Especially in modern cities that pursue low-carbon lifestyles, the application of this technology can provide new impetus for building energy conservation and green energy.

[0051] The vertical axis fan device of this embodiment adjusts the angle of the rotating blade 50 by moving the moving member 30, realizes the adaptive adjustment of the vertical axis fan device under different wind speed conditions, and improves the wind energy utilization rate of the vertical axis fan device. At the same time, through the setting of the transmission structure 70, the driving force of the driving member 40 can be effectively transmitted to the moving member 30, ensuring the stable adjustment of the rotating blade 50. In addition, the setting of the friction reduction structure 90 reduces the friction between the connecting cylinder 31 and the rotating column 21, and improves the operating efficiency and service life of the vertical axis fan device.

[0052] Specifically, the overall design structure is compact, easy to operate, and has significant practical effect improvement and application benefits. The vertical axis fan device can not only effectively utilize wind energy, but also has good environmental adaptability, can stably operate under various natural conditions, and provides strong technical support for the extensive use of wind energy. In particular, its adaptive adjustment ability enables it to maintain a high wind energy conversion efficiency in areas where wind speed changes frequently, such as coastal areas, valleys, etc., and provides a new solution for the energy supply in these areas. At the same time, its compact design and simple operation also make it have broad application prospects in the utilization of wind energy in densely populated areas such as cities and villages. Through the precise adjustment of the moving part 30, the vertical axis fan device of this embodiment can adjust the blade angle according to the real-time wind speed to achieve optimal wind energy capture, which not only improves the efficiency of wind energy conversion, but also enhances the environmental adaptability of the vertical axis fan device, so that it can operate stably under various natural conditions, reduces dependence on traditional energy, and makes important contributions to promoting the development of green energy. Especially in areas with large wind speed changes, such as typhoon paths along the coast or valley wind effects in mountainous areas, this adaptive adjustment capability can ensure that the wind turbine is always in the best operating state, providing a continuous and stable source of wind energy for energy supply. In addition, the compact design and simple operation make it easy to install and maintain in urban environments with limited space, making it possible to utilize wind energy in small areas such as urban roofs and balconies, promoting the application of wind energy technology in the urbanization process, and providing technical support for building low-carbon, environmentally friendly modern cities.

[0053] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertical axis fan device, characterized in that: include: Base (10); A rotating structure (20) extending in a vertical direction, wherein the rotating structure (20) is rotatably arranged on the base (10) around its axis; A moving member (30) is movably arranged on the rotating structure (20) along the axial direction of the rotating structure (20); A driving member (40) is disposed between the moving member (30) and the rotating structure (20) and is capable of driving the moving member (30) to move; A plurality of rotating blades (50), wherein the plurality of rotating blades (50) are arranged at intervals along the circumference of the rotating structure (20), a first end of each rotating blade (50) is hingedly connected to the rotating structure (20), and a second end of each rotating blade (50) is a free end; A plurality of connecting members (60) are arranged in one-to-one correspondence with the plurality of rotating blades (50), a first end of the connecting member (60) is hingedly connected to the rotating blade (50), and a second end of the connecting member (60) is hingedly connected to the moving member (30); When the driving member (40) drives the moving member (30) to move, it can drive the rotating blade (50) to swing around the first end of the rotating blade (50).

2. The vertical axis fan device according to claim 1, characterized in that: The vertical axis fan device also includes a transmission structure (70), and the driving member (40) drives the moving member (30) to move relative to the rotating structure (20) through the transmission structure (70).

3. The vertical axis fan device according to claim 2, characterized in that: The moving member (30) comprises a connecting cylinder (31), the rotating structure (20) comprises a rotating column (21), the connecting cylinder (31) is sleeved on the rotating column (21), and the driving member (40) and the transmission structure (70) are both arranged between the connecting cylinder (31) and the rotating column (21).

4. The vertical axis fan device according to claim 3, characterized in that: The rotating column (21) has an accommodating cavity (211) inside, and the top of the rotating column (21) has a connecting hole connected to the accommodating cavity (211). The transmission structure (70) includes a transmission gear (71) and a transmission worm (72) that are meshed together, and the first end of the transmission worm (72) is connected to the top wall of the connecting cylinder (31), and the second end of the transmission worm (72) extends into the accommodating cavity (211) through the connecting hole.

5. The vertical axis fan device according to claim 3, characterized in that: The vertical axis fan device further comprises a first stopper (81), wherein the first stopper (81) is arranged on the top of the rotating column (21), and the first stopper (81) can abut against and cooperate with the top wall of the connecting cylinder (31).

6. The vertical axis fan device according to claim 4, characterized in that: The vertical axis fan device further comprises a second limiting member (82), wherein the second limiting member (82) is arranged on the transmission worm (72), and the second limiting member (82) can abut against and cooperate with the top wall of the accommodating cavity (211).

7. The vertical axis fan device according to claim 3, characterized in that: The vertical axis fan device further comprises a plurality of friction reducing structures (90), wherein the plurality of friction reducing structures (90) are arranged between the side wall of the rotating column (21) and the connecting cylinder (31) at intervals along the circumferential direction of the rotating column (21).

8. The vertical axis fan device according to claim 7, characterized in that: The friction reduction structure (90) includes a rolling ball (91), and a plurality of accommodating recesses (212) are provided on the side wall of the rotating column (21). The plurality of accommodating recesses (212) are arranged one-to-one correspondingly to the plurality of rolling balls (91), and each of the rolling balls (91) is rotatably arranged in the corresponding accommodating recess (212), and the rolling balls (91) are abutted and fitted with the side wall of the connecting tube (31).

9. The vertical axis fan device according to claim 8, characterized in that: A plurality of strip grooves (311) are arranged on the inner wall of the connecting tube (31), and the plurality of strip grooves (311) are arranged in one-to-one correspondence with the plurality of rolling balls (91). The rolling balls (91) are located in the strip grooves (311), and the bottom of the strip grooves (311) is arc-shaped.

10. The vertical axis fan device according to any one of claims 1 to 9, characterized in that: The connecting member (60) comprises an auxiliary blade.

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