CN212079514U - Fan - Google Patents

Abstract

The utility model provides a fan, this fan includes: the movable shaft is provided with a through hole from one end to the other opposite end along the movable shaft; the fan blades are arranged at equal intervals along the rotating direction of the movable shaft, and one ends of the fan blades are fixedly connected with the outer surface of the movable shaft; the rotating shaft is arranged in the through hole and is coaxial with the through hole; the unidirectional shifting assembly comprises a first shifting piece fixed on the inner surface of the movable shaft and a second shifting piece fixed on the outer surface of the rotating shaft, wherein the first shifting piece can rotate along a first direction to drive the second shifting piece to rotate and can rotate along a second direction opposite to the first direction to be separated from the second shifting piece; and the generator is connected with the end part of the rotating shaft. The unidirectional shifting assembly is arranged between the movable shaft and the rotating shaft of the fan, so that wind energy is converted into mechanical energy, and then the mechanical energy is converted into electric energy.

Description

Fan

Technical Field

The utility model belongs to the technical field of the subway construction, more specifically relates to a fan.

Background

The train running at high speed in the subway tunnel can drive the air in the tunnel to generate high-speed flow, and the generated high-speed flowing air flow is called as subway piston air because the phenomenon that the air is compressed by a piston in a cylinder is similar. In the current subway design and construction, a ventilation device is usually adopted to directly exhaust piston wind out of a station, for example, a device such as a grid, a louver or an anti-falling net is adopted, a subway grid is taken as an example, the structure of the subway grid is formed by interweaving transverse and longitudinal frameworks into a grid shape, the grid is usually arranged on a ceiling in the subway station, and the piston wind can pass through the grid of the grid to achieve the purpose of exhausting wind in the station, so that the ventilation performance in the station is ensured. Because the energy contained in the wind energy of the piston wind is huge, the piston wind is directly discharged out of the station, and the wind energy of the piston wind is greatly wasted.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a fan to solve the technical problem of how to reasonably utilize the piston wind and avoid the wind energy waste of the piston wind.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the embodiment of the utility model provides a fan.

A fan, comprising: the movable shaft is provided with a through hole from one end to the other opposite end along the movable shaft; the fan blades are arranged at equal intervals along the rotating direction of the movable shaft, and one ends of the fan blades are fixedly connected with the outer surface of the movable shaft; the rotating shaft is arranged in the through hole and is coaxial with the through hole; the unidirectional shifting assembly comprises a first shifting piece fixed on the inner surface of the movable shaft and a second shifting piece fixed on the outer surface of the rotating shaft, wherein the first shifting piece can rotate along a first direction to drive the second shifting piece to rotate and can rotate along a second direction opposite to the first direction to be separated from the second shifting piece; a generator connected to an end of the rotating shaft.

Further, the first toggle piece comprises: one end of the fixed shifting piece is fixedly connected with the inner surface of the movable shaft; one end of the movable shifting piece is rotatably connected with the other end of the fixed shifting piece, and the other end of the movable shifting piece can be contacted with or separated from the second shifting piece.

Furthermore, the unidirectional shifting assembly further comprises a hinge for connecting the fixed shifting piece and the movable shifting piece, and the hinge is arranged on the leeward side close to the fan blades.

Furthermore, one end, close to the movable shifting piece, of the fixed shifting piece is provided with a first magnet, one end, close to the fixed shifting piece, of the movable shifting piece is provided with a second magnet, and the first magnet and the second magnet can attract each other.

Further, the axis of rotation includes first axis of rotation and the second axis of rotation that the interval set up, the loose axle is including setting up the first loose axle outside first axis of rotation and setting up the second loose axle outside the second axis of rotation, the rotation direction of first loose axle with the rotation direction of second loose axle is opposite.

Further, the length of the fan blade is smaller than half of the distance between the first rotating shaft and the second rotating shaft.

Further, a fixing rod is arranged between the first rotating shaft and the second rotating shaft, and the distance between the fixing rod and the first rotating shaft is equal to the distance between the fixing rod and the second rotating shaft.

Further, the length of the rotating shaft is greater than that of the movable shaft.

Furthermore, the fan also comprises a fixed shaft arranged outside the rotating shaft, and the fixed shaft and the rotating shaft are coaxial.

Further, the fan also comprises a lighting device connected with the generator.

The utility model provides a pair of fan, including flabellum, loose axle, axis of rotation, generator and one-way subassembly of stirring, wherein one-way subassembly of stirring includes that first stirring and second stir the piece to first stirring can be followed the first direction and rotated and just can follow the second direction opposite with the first direction and rotate in order to stir the separation with the second in order to stir the piece with the second. The unidirectional shifting assembly is arranged between the movable shaft and the rotating shaft of the fan, so that wind energy is converted into mechanical energy, and then the mechanical energy is converted into electric energy.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of a wind power plant;

FIG. 2 is a schematic cross-sectional view of a fan in the direction A-A according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a fan in the direction B-B according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a fan according to an embodiment of the present invention in a C-C direction when the fan is rotated in a first direction;

FIG. 5 is a schematic cross-sectional view of the fan of an embodiment of the present invention in the C-C direction when the fan is rotating in a second direction;

FIG. 6 is a schematic diagram of a fan generator;

FIG. 7 is an enlarged view of a portion of FIG. 4 at A;

FIG. 8 is a schematic structural view illustrating a state in which a first toggle member and a second toggle member of the fan are separated from each other;

FIG. 9 is an enlarged partial view of FIG. 3 at B;

FIG. 10 is a schematic diagram of the analysis of the leeward side of the fan when the left side of the fan is coming;

FIG. 11 is an analysis diagram of the leeward side of the fan when the right side is coming;

FIG. 12 is an enlarged partial view at C of FIG. 10;

FIG. 13 is a schematic top view of the fan;

FIG. 14 is a schematic cross-sectional view of a fan in the direction D-D;

FIG. 15 is an enlarged partial schematic view taken at D in FIG. 13;

fig. 16 is a layout diagram of the lighting device of the fan.

Description of the reference numerals

1-fan blade, 12-gear box, 13-inverter, 2-movable shaft, 21-movable shaft end cover, 22-through hole, 23-first movable shaft, 24-second movable shaft, 3-rotating shaft, 31-first rotating shaft, 32-second rotating shaft, 4-toggle assembly, 41-first toggle piece, 42-second toggle piece, 411-fixed toggle piece, 4111-first toggle pieceA magnet, 412-movable paddle, 4121-second magnet, 413-rotating piece, 414-hinge, 4141-rotating shaft, 4142-sheet metal, 4143-bolt, 5-grid, 51-fixed bar, 6-fixed shaft, 7-lighting device, 8-ceiling, W-wind, P-generator, U-electricity, ω -rotation direction, ω -electricity₁A first direction, ω₂First direction, theta-angle

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various combinations of the specific features of the present invention are not described separately.

In the following description, references to the terms "first", "second", and the like are simply to distinguish between different objects and do not denote the same or a relationship between the two. It should be understood that the references to "above" and "below" are to be interpreted as referring to the orientation during normal use.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiment of the utility model provides a fan can be multiple fan that has from the power generation function, can be subway grid fan, underground station tripe fan, tunnel track district fan for example. It should be noted that the application scene type in the present invention is not limited to the present invention.

The operation principle of the wind power generation fan is exemplified in connection with fig. 1, and the fan may include a fan blade 1, a hub 11, a gear box 12 and a generator P. When wind W blows over the fan blades 1, pressure difference can be generated on the front side and the back side of the fan blades 1, the pressure difference enables the wind W to form power on the fan blades 1 and pushes the fan blades 1 to move, usually, the fan blades 1 are fixedly connected to a hub 11, under the action of continuous wind, the fan blades 1 drive the hub 11 to rotate together and cross air flow continuously, wind energy is converted into mechanical energy, one end of the hub 11 is connected with a gear box 12, a transmission system is arranged in the gear box 12 and receives the power generated by the fan blades 1 and the hub 11 under the action of the wind, one end of the gear box 12 is connected with a generator P, the gear box 12 transmits the obtained power to the generator P and enables the generator P to obtain corresponding rotating speed, the generator P makes cutting magnetic force line movement, the generator outputs induced electromotive force by utilizing the principle of electromagnetic induction, the generator generates current through a. The generated current may be converted to ac power by inverter 13 for use by the electrical device U. Wind energy is widely used as a clean renewable energy source in nature, and is converted into mechanical energy by utilizing the wind energy, then the mechanical energy is converted into electric energy, and finally wind power generation is realized through an energy conversion process.

The utility model discloses use the fan of being applied to in the subway grid to explain as the example.

In the embodiment of the present invention, as shown in fig. 2, the fan includes a movable shaft 2 and fan blades 1, a through hole 22 is formed along one end of the movable shaft 2 to the opposite end, a plurality of fan blades 1 are arranged along the rotation direction ω of the movable shaft 2 at equal intervals, and one end of the fan blades 1 is fixedly connected to the outer surface of the movable shaft 2. Specifically, the loose axle 2 is the hollow shaft, the through-hole 22 link up completely along the length direction of loose axle 2, the surface of loose axle 2 sets up a plurality of flabellum 1 of quantity along circumference, flabellum 1 is roughly sheet structure, the shape can be arbitrary, the surface of flabellum 1 is streamlined design, make flabellum 1 when relative air current motion, reduce its air resistance that receives, the equidistant setting of flabellum 1 is when taking the loose axle 2 to rotate for flabellum 1, make the moment that loose axle 2 received along whole circumference the same, produce the eccentricity and lead to the motion unstability when avoiding the loose axle 2 to rotate.

As shown in fig. 2 and 3, the fan further includes a rotation shaft 3, and the rotation shaft 3 is disposed in the through hole 22 and is coaxial with the through hole 22. The rotating shaft 3 is arranged in the movable shaft 2 through the through hole 22 and coaxial with the movable shaft 2, so that the movable shaft 2 and the rotating shaft 3 can be prevented from generating mutual interference when moving due to eccentric arrangement.

As shown in fig. 3-5, the fan further includes a one-way toggle assembly 4, which includes a first toggle member 41 fixed on the inner surface of the movable shaft 2 and a second toggle member 42 fixed on the outer surface of the rotating shaft 3, wherein the first toggle member 41 can be arranged along a first direction ω₁The second toggle member 42 is driven to rotate by the rotation and can rotate along the first direction omega₁Second and opposite direction omega₂Rotates to be separated from the second toggle member 42. Be provided with bearing 5 between loose axle 2 and axis of rotation 3, be located the both sides of stirring subassembly 4 to connect loose axle 2 and axis of rotation 3, the both ends of loose axle 2 are provided with loose axle end cover 21, stir parts such as subassembly 4 and bearing 5 with the protection. In order to make the end of the first toggle member 41 and the end of the second toggle member 42 contact with each other to achieve a better contact effect, and to simplify the manufacturing process, the first toggle member 41 and the second toggle member 42 may be substantially rectangular members. The distance between the end surface of the first toggle piece 41 and the inner surface of the movable shaft is greater than the distance between the end surface of the second toggle piece 42 and the inner surface of the movable shaft, so that the end of the first toggle piece 41 can contact the end of the second toggle piece 42. When the movable shaft 2 is in the first direction omega as shown in fig. 4₁During rotation, one end of the first toggle piece 41 is always in contact with one end of the second toggle piece 42 to push the second toggle piece 42 to move, the power of the movable shaft 2 is transmitted to the second toggle piece 42 through the first toggle piece 41, and then the second toggle piece 42 drives the rotating shaft 3 to rotate, so that the rotating shaft 3 obtains the same rotating speed as the movable shaft 2; when the movable shaft 2 is in the first direction omega as shown in fig. 5₁Second and opposite direction omega₂Rotation ofWhen the first toggle member 41 and the second toggle member 42 are separated from each other, the second toggle member 42 stops rotating gradually due to the pushing force applied to the end thereof, so that the rotating shaft 3 can only rotate in the first direction ω when the operating state is performed₁Rotate without following the first direction omega₁Second and opposite direction omega₂The rotation realizes the unidirectional rotation of the rotating shaft 3, and avoids the fan from breaking down caused by the reverse rotation of the rotating shaft 3. Meanwhile, the toggle assembly 4 is used as a transmission system of the fan, the structure and the connection mode are simple, and the production and manufacturing processes and the installation process can be simplified.

As shown in fig. 6, the fan further includes a generator P connected to an end of the rotating shaft 3. The end of the rotating shaft 3 is connected with a rotor in the generator P, after the rotor of the generator P obtains a corresponding rotating speed, a coil in the generator P cuts magnetic lines of force to move, the generator P outputs induced electromotive force by utilizing the electromagnetic induction principle, and current is generated through a closed load loop.

The embodiment of the utility model provides a through set up flabellum 1 on loose axle 2 surface, set up axis of rotation 3 in loose axle 2, axis of rotation 3 is connected generator P, and set up one-way stirring subassembly 4 between loose axle 2 and axis of rotation 3, on the one hand through converting wind energy into mechanical energy, convert mechanical energy into electric energy again, this energy conversion process has realized the rational utilization of resource; on the other hand, the structure and the connection mode of the toggle assembly 4 serving as a transmission system are simple, and unidirectional transmission can be realized.

In some embodiments, as shown in fig. 7 and 8, the first toggle part 41 includes a fixed toggle piece 411, one end of which is fixedly connected with the inner surface of the movable shaft 2; one end of the movable poking sheet 412 is rotatably connected with the other end of the fixed poking sheet 411, and the other end can be contacted with or separated from the second poking piece 42. Specifically, the fixed shifting piece 411 and the movable shifting piece 412 are connected through a rotating piece 413, the rotating piece 413 is located on one side of an engagement surface between an end surface of the fixed shifting piece 411 and an end surface of the movable shifting piece 412, a rotation axis of the rotating piece 413 is perpendicular to a rotation direction of the movable shaft 2, and the movable shifting piece 412 can rotate around the rotation axis of the rotating piece 413 by a certain angle θ, where the angle θ is an included angle formed by a lower end surface of the fixed shifting piece 411 and an upper end surface of the movable shifting piece 412. When the movable shifting piece 412 contacts with the second shifting piece 42, the angle θ is 0 °, that is, the movable shifting piece 412 and the fixed shifting piece 411 are kept vertical, the second shifting piece 42 abuts against one side of the movable shifting piece 412 close to the rotating piece 413, an acting force is applied to the movable shifting piece 412, simultaneously, due to the action of wind, the fan blade 1 drives the movable shaft 2 to move, the movable shaft 2 transmits the acting force to the fixed shifting piece 411, the upper end face of the movable shifting piece 412 abuts against the lower end face of the fixed shifting piece 411, the movable shifting piece 412 receives the acting force transmitted by the fixed shifting piece 411 and applies the acting force to the second shifting piece 42 contacting with the movable shifting piece 412, and when the acting force applied to the second shifting piece 42 by the movable shifting piece 412 is greater than the counter acting force of the second shifting piece 42, the movable shifting piece 412 can push the second shifting piece 42 to move. When the acting force provided by the wind force is not enough to push the second toggle piece 42 to move, the movable toggle piece 412 is separated from the second toggle piece 42, the movable toggle piece 412 loses the reaction force provided by the second toggle piece 42 at one side thereof, and simultaneously, under the action of the self gravity of the movable toggle piece 412, the end surface of the movable toggle piece 412 is separated from the end surface of the fixed toggle piece 411 and forms an angle θ.

In other embodiments, as shown in fig. 9, the one-way toggle assembly 4 further comprises a hinge 414 connecting the fixed toggle piece 411 and the movable toggle piece 412, wherein the hinge 414 is disposed near the leeward side of the fan blades 1. Preferably, the fixed shifting piece 411 and the movable shifting piece 412 are connected by a hinge 414, two metal plates 4142 connected with a rotating shaft 4141 on the hinge 414 are respectively and fixedly connected with the fixed shifting piece 411 and the movable shifting piece 412 by bolts 4143, the hinge 414 can be a prefabricated part, and the transmission system in the embodiment of the present invention can be formed by simply assembling the first shifting piece 41.

The meaning of the leeward side will be clarified according to the specific schematic diagram, as shown in fig. 10, when the fan receives the incoming wind W from the left side, the left side surface of the fan blade 1 close to the incoming wind directly receives the force of the wind, and then the right side surface opposite to the left side surface of the fan blade 1 is the leeward side. As shown in fig. 11, when the fan receives the right incoming wind W, the right side surface of fan blade 1 close to the incoming wind directly receives the force of the wind, and the left side surface opposite to the right side surface of fan blade 1 is the leeward side.

Taking the right side wind W in fig. 11 as an example, the hinge 414 needs to be disposed at the left side of the first toggle member 41, the wind force is applied on the right side surface of the fan blade 1, the movable shaft 2 and the first toggle member 41 are ready to start to perform counterclockwise rotation movement under the action of the wind W, the fixed toggle piece 411 and the movable toggle piece 412 whose end surfaces are originally in the separated state contact the upper end portion of the second toggle member 42 during the counterclockwise rotation advancing process, the lower end portion of the movable toggle piece 412 is subject to the reaction force of the upper end portion of the second toggle member 42, the reaction force gradually merges the fixed toggle piece 411 and the movable toggle piece 412 whose end surfaces are in the separated state into a vertical state, that is, the fixed toggle piece 411 and the movable toggle piece 412 are in the locked state, when the action force of the wind is greater than the reaction force of the second toggle member 42, the movable toggle piece 412 continues to push the second toggle member 42 to rotate counterclockwise together, when the wind stops or the acting force provided by the wind force is not enough to push the second toggle piece 42 to move, the movable toggle piece 412 is separated from the second toggle piece 42, the movable toggle piece 412 loses the reaction force provided by the second toggle piece 42 at one side thereof, and at the same time, the movable toggle piece 412 is under the action of its own gravity, the end surface of the movable toggle piece 412 is out of contact with the end surface of the fixed toggle piece 411, that is, the fixed toggle piece 411 and the movable toggle piece 412 are in a non-locking state, under the structure shown in fig. 11, even if an external force forces force the fan blade 1 and the movable shaft 2 to rotate clockwise, because the movable toggle piece 412 is in a free state, when the movable toggle piece 412 contacts the second toggle piece 42, the reaction force applied by the second toggle piece 42 to the movable toggle piece 412 can make the movable toggle piece 412 rotate clockwise around the rotating shaft of the hinge 414 to form an opening angle, so that the movable toggle piece 412 slides over the upper end portion of the second toggle piece, therefore, the movable pulling piece 412 in the free state cannot drive the rotating shaft 3 to rotate together by pushing the second pulling member 42. The purpose of the hinge 414 on the leeward side is to achieve unidirectional transmission, so that the rotating shaft 3 can only rotate in one direction, and the generator P or the fan is prevented from being out of order due to reverse rotation.

In other embodiments, as shown in fig. 12, a first magnet 4111 is disposed at an end of the fixed paddle 411 close to the movable paddle 412, a second magnet 4121 is disposed at an end of the movable paddle 412 close to the fixed paddle 411, and the first magnet 4111 and the second magnet 4121 can attract each other. Specifically, the magnetic pole of terminal surface is opposite with the magnetic pole of second magnet 4121 up end under first magnet 4111, because the embodiment of the utility model provides an in mentioned wind W is the wind in nature, its wind-force size does not receive artificial control, the wind-force size that the fan received when operating condition has certain degree undulant, in order to avoid this undulant contact surface that leads to fixed plectrum 411 and activity plectrum 412 the unstable condition that opens and shuts appears, utilize first magnet 4111 and the second magnet 4121 inter attraction of terminal surface, can strengthen being connected of fixed plectrum 411 and activity plectrum 412 contact surface when the operating condition of fan.

In some embodiments, as shown in fig. 13, the rotating shaft 3 includes a first rotating shaft 31 and a second rotating shaft 32 which are arranged at intervals, the movable shaft 3 includes a first movable shaft 23 arranged outside the first rotating shaft 31 and a second movable shaft 24 arranged outside the second rotating shaft 32, and the rotating direction of the first movable shaft 23 is opposite to that of the second movable shaft 24. Specifically, the fan may be applied to the apparatus for a subway grid 5, the first and second rotating shafts 31 and 32 may replace the lateral frame in the conventional structure of the grid 5, and the number of the first and second rotating shafts 31 and 32 may be plural depending on the specific area of the grid 5. The first movable shafts 23 are arranged on the first rotating shaft 31 at intervals, the second movable shafts 24 are arranged on the second rotating shaft 32 at intervals, and the number of the first movable shafts 23 and the number of the second movable shafts 24 are a plurality, which is also determined according to the specific area of the grille 5. The structure of the movable shaft 2 and the fan blades 1 can replace the vertical framework in the traditional grating 5 structure.

As shown in fig. 14, the arrangement direction of the fan blades 1 on the adjacent first movable shafts 23 needs to be opposite to the arrangement direction of the fan blades 1 on the second movable shafts 24, as shown in fig. 14, the leeward side of the fan blades 1 on the first movable shafts 23 is the right side, and the first movable shafts 23 are along the first direction ω₁The leeward side of the fan blade 1 on the second movable shaft 24 is the left side, and the second movable shaft 24 is along the first direction omega₁Second and opposite direction omega₂Rotate, so as to prevent the adjacent fan blades 1 on the first rotating shaft 31 and the adjacent fan blades 1 on the second rotating shaft 32 from runningThe air flow interference is generated in the process, and the power generation efficiency of the fan is influenced. Because vertical skeleton in 5 structures of traditional grid is replaced by loose axle 2 and flabellum 1 structure, and loose axle 2 and flabellum 1 structure can be rotary motion under the effect of wind, consequently, compare in traditional grid, the embodiment of the utility model provides an in 5 windage that receive of grid is littleer, ventilation performance is better.

In some embodiments, as shown in fig. 13, the length of fan blade 1 is less than half of the distance between first rotating shaft 31 and second rotating shaft 32. The purpose is that the adjacent fan blades 1 on the first rotating shaft 31 and the adjacent fan blades 1 on the second rotating shaft 32 interfere with each other during operation.

In some embodiments, as shown in fig. 13, a fixing rod 51 is provided between the first rotating shaft 31 and the second rotating shaft 32, and the fixing rod 51 is spaced apart from the first rotating shaft 31 by the same distance as the second rotating shaft 32. Specifically, the fixing rod 51 is disposed between the fan blade 1 on the first rotating shaft 31 and the fan blade 1 on the second rotating shaft 32, and both ends of the fixing rod are fixedly connected to the grille 5. The function of the horizontal fixing frame is the same as that of the horizontal fixing frame in the structure of the conventional grating 5, and the first rotating shaft 31 and the second rotating shaft 32 of the encryption grating 5 are used in the embodiment of the present invention.

In some embodiments, as shown in fig. 13, the length of the rotating shaft 3 is greater than the length of the movable shaft 2.

In some embodiments, as shown in fig. 15, the fan further includes a fixed shaft 6 disposed outside the rotating shaft 3, the fixed shaft 6 being coaxial with the rotating shaft 3. Specifically, the parts of the rotating shafts 3 exposed outside are provided with the fixing shafts 6, so that the rotating shafts 3 are prevented from being rusted and aged, and the service life is prolonged.

In some embodiments, as shown in fig. 16, the fan further comprises a lighting device 7 connected to the generator P, in particular, the grille 5 may be mounted on a ceiling 8, a plurality of lighting devices 7 may be arranged around the grille 5 in order to provide illumination to the indoor environment, terminals of the lighting devices 7 are connected to output terminals of the generator P, and the generator P supplies current to the lighting devices 7 through the output terminals. The embodiment of the utility model provides an in the grid fan both can realize that the grid is traditional to be prevented weighing down thing and air permeability, can also utilize the subway in the produced piston wind of train travel to carry out wind power generation simultaneously, the electric energy of production finally can supply the illumination to use in the subway station.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. A fan, comprising:

the movable shaft is provided with a through hole from one end to the other opposite end along the movable shaft;

the fan blades are arranged at equal intervals along the rotating direction of the movable shaft, and one ends of the fan blades are fixedly connected with the outer surface of the movable shaft;

the rotating shaft is arranged in the through hole and is coaxial with the through hole;

the unidirectional shifting assembly comprises a first shifting piece fixed on the inner surface of the movable shaft and a second shifting piece fixed on the outer surface of the rotating shaft, wherein the first shifting piece can rotate along a first direction to drive the second shifting piece to rotate and can rotate along a second direction opposite to the first direction to be separated from the second shifting piece;

a generator connected to an end of the rotating shaft.

2. The fan of claim 1, wherein the first toggle member comprises:

one end of the fixed shifting piece is fixedly connected with the inner surface of the movable shaft;

one end of the movable shifting piece is rotatably connected with the other end of the fixed shifting piece, and the other end of the movable shifting piece can be contacted with or separated from the second shifting piece.

3. The fan of claim 2 wherein said one-way clutch assembly further comprises a hinge connecting said fixed clutch and said movable clutch, said hinge being disposed adjacent a leeward side of said fan blades.

4. The fan as claimed in claim 2, wherein a first magnet is disposed at an end of the fixed blade adjacent to the movable blade, and a second magnet is disposed at an end of the movable blade adjacent to the fixed blade, and the first magnet and the second magnet are attracted to each other.

5. The fan as claimed in claim 1, wherein the rotation shafts include a first rotation shaft and a second rotation shaft which are spaced apart from each other, and the movable shafts include a first movable shaft which is disposed outside the first rotation shaft and a second movable shaft which is disposed outside the second rotation shaft, and a rotation direction of the first movable shaft is opposite to a rotation direction of the second movable shaft.

6. The fan of claim 5 wherein the length of the fan blades is less than half the distance between the first and second rotational axes.

7. The fan as claimed in claim 5, wherein a fixing bar is provided between the first rotating shaft and the second rotating shaft, and the fixing bar is spaced apart from the first rotating shaft by the same distance as the second rotating shaft.

8. The fan as claimed in claim 1, wherein the rotation shaft has a length greater than that of the movable shaft.

9. The fan as claimed in claim 1, further comprising a fixing shaft disposed outside the rotating shaft, the fixing shaft being coaxial with the rotating shaft.

10. The fan of claim 1, further comprising a lighting device coupled to the generator.

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