CN204082443U - Wind blade device - Google Patents

Abstract

A wind blade device can be driven to rotate in a running direction, and includes: a rotating shaft and several blade modules. Each blade module includes a grid-type blade connected to the rotating shaft, and a plurality of swing blades hanging from the grid-type blade that can swing back and forth. The grid blade includes several blade spaces. The swing blades respectively correspond to the blade spaces, and have a connecting end and a swing end arranged up and down. Each oscillating blade can move between a closed position covering the blade space and the oscillating end abutting the lattice blade, and an open position moving the oscillating end away from the lattice blade. Through the cooperation of grille blades and swing blades, reverse wind resistance can be reduced, increasing rotational torque and improving wind power utilization efficiency.

Description

wind blade device

technical field

The utility model relates to a blade device, in particular to a wind blade device which can be driven and rotated by wind force and can be applied to wind power generation equipment.

Background technique

Wind power generation is a device that uses natural wind to drive mechanical components to rotate and convert rotational kinetic energy into electrical energy. This power generation method is more environmentally friendly and less polluting than petroleum, coal, thermal power and other power generation methods. Therefore, countries have invested funds and resources to research and develop wind power generation equipment. One of the factors affecting the efficiency of wind power generation is the design of the blade structure, such as blade shape, extension shape, number of blades, etc., will affect its smooth operation, and the blades of an existing vertical wind power generation equipment are The long plate-shaped and non-porous structure with a complete surface, although the blade can be driven by the wind in one direction to rotate, but when it runs to the return journey, it will be subjected to the wind resistance generated by the reverse wind flow in the other direction, which will cause When it encounters reverse wind resistance, it cannot effectively reduce the resistance, which will affect the rotational torque of the blades.

Referring to Fig. 1, in addition, generally generally adopted horizontal fan, its structure mainly comprises an upright fixed pillar 31, a power generation device 32 installed on the top of this fixed pillar 31, and three blades installed on this power generation device 32 33. The blades 33 are arranged at equal angular intervals around a horizontal axis not shown in the figure, and when the blades 33 are driven by wind force, they will rotate around the horizontal axis. This kind of fan is mainly driven by the wind force in the direction indicated by the arrow X in the figure, and the wind force acting on the blades 33 will form a "wind shear" phenomenon in the direction indicated by the arrow Y, and the noise will be relatively large. In order to reduce the resistance and noise caused by the wind shearing phenomenon, the structure of the blade 33 is designed to be thinner towards the end, thus presenting a slender structure at the end, but the long extension of the blade 33 is originally for Improve the running torque performance, but the slender end design makes the running performance unable to be effectively improved. Therefore, the blade structure of the existing fan needs to be improved.

Contents of the invention

The purpose of the utility model is to provide a wind blade device which can reduce the resistance of the wind flow field when the blade rotates in the opposite direction to the downwind direction, and increase the torsion force.

The wind blade device of the utility model can be driven to rotate in one running direction, and comprises: a rotating shaft, and several blade modules connected to the rotating shaft and angularly spaced from each other. Each blade module includes a grid-type blade connected to the shaft, and several swing blades that can swing back and forth and hang on the grid-type blade. The grid-type blade includes several blade spaces arranged up and down, left and right, The swing blades are set up, down, left, and right and correspond to the blade spaces respectively, and each has a connection end at the top and connected to the grille blade, and a swing end at the bottom, each swing blade can cover the The vane space moves between a closed position in which the swing end abuts against the grille vane, and an open position in which the swing end moves away from the grille vane.

In the wind blade device of the present invention, each blade module further includes several counterweights respectively arranged at the swing ends of the swing blades.

According to the wind blade device of the present invention, each grid-type blade includes an inner side connected to the rotating shaft, and an outer side opposite to the inner side and far away from the rotating shaft, and each blade module also includes an inner side connected to the rotating shaft. A windshield vane that extends outside the blade and oppositely along the running direction.

According to the wind blade device of the present invention, each grid-type blade includes several first grid rods arranged at intervals along the radial direction of the rotating shaft and extending along the axial direction of the rotating shaft, and several first grid rods extending along the axial direction of the rotating shaft, and several The second grid rods are arranged at intervals in the direction and all extend along the radial direction, and the second grid rods and the first grid rods jointly define the blade space.

The wind blade device of the present utility model, the rotating shaft extends left and right, the connecting end of the swinging blade of each blade module is pivotally connected to one of the first grid rods, and the swinging end is pivotally connected to the connecting end One side of the first grid bar below the first grid bar.

The wind blade device of the present utility model, the rotating shaft extends up and down, the connecting end of the swinging blade of each blade module is pivotally connected to one of the second grid rods, and the swinging end is pivotally connected to the connecting end One side of the second grid bar below the second grid bar.

The beneficial effect of the utility model is that: the grid-type blade has the blade space, and the swing blade can be arranged on the grid-type blade so that it can swing back and forth, so that the blade module can be subjected to The wind pressure difference generated by the wind force and the reverse wind force drives the operation. The above-mentioned design of the utility model can be ventilated by the reverse wind, which helps to reduce the reverse wind resistance and achieve the effect of increasing the rotational torque.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of an existing horizontal fan;

Fig. 2 is a perspective view of a first preferred embodiment of the wind blade device of the present invention, simultaneously showing that when the first preferred embodiment is not rotating, several swinging blades are in a closed position;

Fig. 3 is a three-dimensional schematic view of the first preferred embodiment in operation, showing that several swing vanes are in an open position;

Fig. 4 is a partially enlarged view of Fig. 3;

Fig. 5 is a perspective view of a second preferred embodiment of the wind blade device of the present invention, showing that several swing blades are in a closed position;

FIG. 6 is a three-dimensional schematic view of the second preferred embodiment in operation, showing several swing vanes in an open position.

detailed description

The utility model will be described in detail below with reference to the drawings and embodiments. It should be noted that in the following description, similar components are denoted by the same numbers.

2, 3, 4, a first preferred embodiment of the wind blade device of the present invention can be driven by the wind to rotate in a running direction T, and includes: a rotating shaft 1, and several blade modules 2.

The rotating shaft 1 in this embodiment is a long hollow rod extending axially left and right, and can be raised by an erecting device not shown in the figure. Since the rotating shaft 1 extends horizontally, the wind blade device in this embodiment is a horizontal device.

The blade modules 2 are connected to the rotating shaft 1 and are angularly spaced from each other. Each blade module 2 generally extends toward a radial direction of the rotating shaft 1, and includes a grid-type blade 21 connected to the rotating shaft 1, several sets The swing blade 22 on the grid-type blade 21 , several counterweights 23 respectively arranged at the bottom of the swing blade 22 , and a windshield 24 arranged on one side of the grid-type blade 21 .

The number of blade modules 2 in this embodiment is three, and the grid-type blades 21 of the blade modules 2 are spaced at an angle of 120 degrees. Each grid blade 21 includes several first grid rods 211 arranged at intervals along the radial direction of the rotating shaft 1 and extending along an axial direction A of the rotating shaft 1, and several first grid rods 211 spaced apart along the axial direction A The second grid bars 212 are arranged and all extend along the radial direction. The second grid bar 212 and the first grid bar 211 jointly define a plurality of blade spaces 210 arranged up, down, left, and right. In this embodiment, the first grid rods 211 are all parallel to the rotating shaft 1 and extend left and right. In addition, looking at the grille blade 21 as a whole, the grille blade 21 includes an inner side 213 connected to the rotating shaft 1 and extending along the axial direction A, and an outer side opposite to the inner side 213 and away from the rotating shaft 1 214, and opposite a windward side 215 and a windward side 216.

The swing blades 22 of each blade module 2 hang from the windward side 215 of the grid blade 21 so as to swing back and forth. The swing blades 22 are arranged up, down, left, and right respectively corresponding to the blade spaces 210 , and each has a connecting end 221 at the top and connected to the grid-type blade 21 , and a swing end 222 at the bottom. The connecting end 221 of each swing blade 22 is pivotally connected to one of the first grid bars 211, and the swing end 222 is located at the first grid bar below the first grid bar 211 pivotally connected to the connecting end 221. 211 on the windward side 215 . The swing vane 22 can be pivotally connected to the first grid bar 211 through two lugs (not shown) protruding from the first grid bar 211 and a pivot (not shown); of course, other components can also be used It is hinged with the structure, which will not be described here.

The swinging blade 22 in this embodiment can be a hard sheet or a soft sheet, and the hard sheet is made of hard materials such as metal, glass fiber, hard plastic or other hard polymer materials. The soft sheet is made of soft materials such as cloth, rubber, soft plastic or other soft polymer materials. In fact, the material of the swing blades 22 does not need to be limited, as long as it can be lifted by the wind.

The counterweight 23 of each blade module 2 is respectively disposed on the swing end 222 of the swing blade 22 . The counterweight 23 can be used to increase the weight of the swing vane 22, so that the swing vane 22 can be placed vertically and has enough weight to swing.

The windshield 24 of each blade module 2 is in the shape of an arc-shaped long plate, and is connected to the outer side 214 of the grid blade 21 , and extends oppositely along the running direction T. As shown in FIG.

When the utility model was in use, each swinging blade 22 could move between a closed position as shown in Figure 2 and an open position as shown in Figures 3 and 4 (the swinging blades 22 shown in Figures 3 and 4 are partly opened). When in the closed position, the swing end 222 of each swing vane 22 abuts against the grid-type vane 21 , and the swing vane 22 covers the corresponding vane space 210 . When in the open position, the swing end 222 of each swing vane 22 is away from the grid-type vane 21, and at this time the swing vane 22 no longer covers the corresponding vane space 210, so that the reverse wind flow field can pass through the vane Space 210 while blowing.

Specifically, the rotating shaft 1 of the present invention can be installed at a height of about several meters, and is driven to run by the wind pressure difference passing through the overall axis of the present invention. With an axis passing through the rotating shaft 1 as a boundary, the blade module 2 above the rotating shaft 1 is on the forward wind pressure side receiving the wind pressure on the windward side. At the same time, the two blade modules below the center of the rotating shaft 1 Group 2 is located on the reverse wind pressure side of the leeward side. When the upper blade module 2 is blown by a windward force F1, since the swing blade 22 of the blade module 2 is located on the windward side 215 of the grid-type blade 21, it will be blown and attached to the grid on the grid-type blade 21, and is located at the closed position and covers the blade space 210, and the swing blade 22 further cooperates with the grid-type blade 21 to form a complete windward surface on the windward side 215, which can generate a relatively large torque Rotation, so that the utility model can be driven by the wind to rotate towards the running direction T together with the rotating shaft 1 .

At this time, the two-blade module 2 below the rotating shaft 1 is subjected to the resistance of an upwind wind force F2 generated by the reverse wind flow field because it is rotated to the leeward side, and the swing blades 22 of the two-blade module 2 below are further moved. This upwind wind force F2 blows and presents an open ventilation state. At this time, the swing blades 22 are in the open position, and at least a part of each blade space 210 is not covered by the swing blades 22 and can be ventilated, so that the reverse wind can pass through the blades. The space 210 flows into the windward side 215 , so that the headwind resistance and the reverse torque can be reduced, and the lower two-blade module 2 has a relatively small torque. In this way, the torsional force received by the three blade modules 2 of the utility model as a whole can be subjected to the forward wind pressure on the windward side and the reverse wind pressure on the upwind side. The wind force used to push the utility model to rotate toward the running direction T, so that the utility model can continuously rotate toward the running direction T.

To sum up, when any blade module 2 of the present invention runs to the windward side, its swinging blade 22 is blown by the windward wind and closes, generating a relatively large forward torsion force, and when it runs to the leeward side, its swing The blades 22 can be blown up and opened by the reverse wind to generate a small reverse torsion force. Therefore, after deducting the reverse wind pressure from the forward wind pressure, the overall rotational torsion of the utility model is larger and the utilization efficiency of wind force can be improved.

It is worth mentioning that the windshield 24 of each blade module 2 can be used to limit the flow direction of the wind flow field on the windward side, and can be used to limit the wind flow field to retain the wind force on the windward side 215, so that the blade module Group 2 is pushed by the windward force F1 to increase the rotational torque during operation.

It should be added that, generally, in the radial direction of the rotating shaft 1 , the farther away from the rotating shaft 1 , the greater the torsion force and wind force received. Therefore, in terms of design, the swing blades 22 farther away from the rotating shaft 1 can be designed as smaller pieces, and the swing blades 22 nearer to the rotating shaft 1 can be designed as larger pieces. In addition, the utility model can also add additional deflectors according to requirements to help collect and guide wind force.

To sum up, the blade space 210 is formed by the grid structure of the grid-type blade 21, and the swing blade 22 is arranged on the grid-type blade 21 so as to swing back and forth, so that the blade can be The module 2 can be operated by the wind pressure difference generated by the forward wind and the reverse wind. The above-mentioned structural design of the utility model can be ventilated by the reverse wind, which helps to reduce the reverse wind resistance and achieve the effect of improving the running torque. . Moreover, the above-mentioned structural design of the utility model can be operated when erected several meters above the ground. The material and cost of erecting the length of the strut are saved, and the length and width of the blade do not need to be too long, so that the rotation speed at the top of the blade is greatly reduced, thereby reducing the rotation noise.

Referring to Fig. 5 and 6, a second preferred embodiment of the wind blade device of the present utility model is roughly the same in structure as the first preferred embodiment, the difference being that this embodiment is an upright device, and the rotating shaft 1 To extend vertically, the first grid bar 211 also extends vertically, and the second grid bar 212 extends horizontally left and right. In this embodiment, the connecting end 221 of each swing blade 22 is pivotally connected to one of the second grid rods 212, and the swinging end 222 is located at the bottom of the second grid rod 212 pivotally connected to the connecting end 221. One side of the second grid bar 212 (the side facing the windward F1). This embodiment can also be raised above the sky by an erection system not shown in the figure, so that it can be driven by wind to operate.

When the present embodiment is in operation, when any blade module 2 moves to the windward side, its swing blades 22 are also blown and closed by the windward force, and when running to the leeward side, its swing blades 22 can be blown by the reverse wind. Lift it up. This embodiment is the same as the first preferred embodiment, and can also achieve the effect of increasing the running torque.

It can be seen from this embodiment and the first embodiment that no matter it is a horizontal device or a vertical device, the connecting end 221 of the swing blade 22 is always located at the top, the swing end 222 is always located at the bottom, and the counterweight 23 is arranged on the The swing end 222 is located at the bottom of the swing blade 22 .

Claims (6)

1. a wind blade device, can be driven and be rotated towards a rotation direction, and comprise: a rotating shaft, and this rotating shaft of several connection and the blade module of angle intervals each other, it is characterized in that: each blade module comprises the spacing grid type blade that connects this rotating shaft, and several oscillating vane that can hang on to swing on this spacing grid type blade, this spacing grid type blade comprises several blade space arranged up and down, described oscillating vane is in arranging up and down and the corresponding described blade space of difference, and all there is one and be positioned at top and the connecting end connecting this spacing grid type blade, and one be positioned at bottom swinging end, each oscillating vane can cover this blade space at one and this swinging end is reclined the closed position of this spacing grid type blade, and one makes to move between the enable possition of this swinging end away from this spacing grid type blade.

2. wind blade device as claimed in claim 1, is characterized in that: each blade module also comprises several counterweight member being arranged at the swinging end of described oscillating vane respectively.

3. wind blade device as claimed in claim 1, it is characterized in that: each spacing grid type blade comprises the inner side that connects this rotating shaft, and inside one in contrast to this and away from the outside of this rotating shaft, each blade module also comprises the outside and the blinker oppositely extended along this rotation direction that are connected to this spacing grid type blade.

4. the wind blade device as described in claim arbitrary in claims 1 to 3, it is characterized in that: each spacing grid type blade comprises several radial direction along this rotating shaft and is spaced and the first grid bar extended along the axial direction of this rotating shaft, and to be severally spaced and all along the second gate bar that this radial direction extends, described second gate bar and described first grid bar define described blade space jointly along this axial direction.

5. wind blade device as claimed in claim 4, it is characterized in that: this rotating shaft is that left and right extends, one of them pivot joint in the connecting end of the oscillating vane of each blade module and described first grid bar, this swinging end be positioned at this first grid bar of this connecting end pivot joint below the side of this first grid bar.

6. wind blade device as claimed in claim 4, it is characterized in that: this rotating shaft is upper downward-extension, one of them pivot joint in the connecting end of the oscillating vane of each blade module and described second gate bar, this swinging end be positioned at this second gate bar of this connecting end pivot joint below the side of this second gate bar.