Impeller structure and power generation device

Abstract

The invention relates to the technical field of wind power generation, and discloses an impeller structure and a power generation device. The blade is fixedly connected with the rotating shaft and is arc-shaped, a channel is formed in the blade and extends in the arc direction of the blade, and an air inlet and an air outlet are formed in the two ends of the channel respectively; the side wall of the side, facing the windward side, of the air inlet is partially through to form a receding part, and the side wall of the side, away from the windward side, of the air inlet is provided with a wind receiving part. The number of the blades is multiple, and the air outlet of one blade corresponds to the air inlet of another blade adjacent to the blade. According to the impeller structure provided by the invention, the channels are formed in the blades, and the air outlet of one blade corresponds to the air inlet of another adjacent blade, so that breeze can enter the next blade after entering the channel of one blade, and continuous utilization of wind energy on the impeller structure is realized; and the wind energy capturing efficiency under the breeze condition is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to an impeller structure and a power generation device. Background Art

[0002] Driven by the continuous growth of global energy demand and the increasing awareness of environmental protection, more and more attention is paid to the development and utilization of renewable energy. Wind energy is a clean, renewable natural energy source. However, the development and utilization of wind energy is not easy, especially in light wind conditions, it is difficult to efficiently capture wind energy. Traditional wind power generation devices, such as multi-blade wind rotors, can better capture wind energy and convert it into electrical energy under certain wind speed conditions, but in light wind conditions, their wind energy capture efficiency is low, which limits their power generation performance. Summary of the invention

[0003] In view of this, the present invention provides an impeller structure and a power generation device to solve the problem of low wind energy capture efficiency of traditional wind power generation devices in a breeze environment.

[0004] In a first aspect, the present invention provides an impeller structure, comprising:

[0005] A rotating shaft, adapted to rotate about its own axis;

[0006] The blade is fixedly connected to the rotating shaft, the blade is arc-shaped, and has a channel inside, the channel extends along the arc direction of the blade, and the two ends of the channel along the extension direction form an air inlet and an air outlet respectively;

[0007] The blade partially penetrates the side wall of the air inlet facing the windward surface to form a yielding portion, and the blade forms a wind receiving portion on the side wall of the air inlet facing away from the windward surface;

[0008] A plurality of blades are provided, and an air outlet of one blade is provided corresponding to an air inlet of another adjacent blade.

[0009] Beneficial effect: By opening a channel on the blade, and the air outlet of one blade and the air inlet of another adjacent blade are arranged correspondingly, so that the breeze can enter the next blade after entering the channel of one blade, thereby realizing the continuous utilization of wind energy in the impeller structure and improving the wind energy capture efficiency in breeze conditions.

[0010] In an optional embodiment, the inner diameter of the channel gradually decreases along the direction from the air inlet toward the air outlet.

[0011] Beneficial effect: By constructing the channel on the blade into a structure with a gradually decreasing inner diameter along the airflow direction, the breeze can flow smoothly out of the previous blade and flow to the next blade, thereby achieving continuous utilization and maximum capture of wind energy inside the impeller structure.

[0012] In an optional embodiment, the impeller structure further includes a guide plate, which is connected between the rotating shaft and the blades, and the guide plate is fixedly connected to the end surface of the yielding portion so as to be suitable for guiding the airflow into the air inlet.

[0013] Beneficial effect: The guide plate is fixedly connected to the end surface of the yielding portion to facilitate guiding the airflow and ensure that the airflow can smoothly transition to the inside of the channel of the blade.

[0014] In an optional embodiment, a connecting rod is provided between the guide plate and the rotating shaft, one end of the connecting rod is connected to the rotating shaft, and the other end of the connecting rod is connected to the guide plate.

[0015] Beneficial effect: By arranging a connecting rod between the guide plate and the rotating shaft, the rotational torque of the guide plate and the blades can be increased.

[0016] In an optional embodiment, the connecting rod includes a telescopic rod.

[0017] Beneficial effect: The guide plate and the rotating shaft are connected by a telescopic rod, so that the interval between the guide plate and the rotating shaft can be adjusted according to actual needs.

[0018] In an optional embodiment, a connecting piece is provided between the rotating shaft and the connecting rod, and the connecting piece is suitable for fixedly connecting the rotating shaft and the connecting rod.

[0019] In an optional embodiment, the impeller structure further includes a flow guide, which is connected to the rotating shaft and located on the windward side of the blade, and is suitable for guiding the airflow toward the blade.

[0020] Beneficial effect: By arranging the guide piece on the windward side of the blade, the wind can be effectively guided to flow toward the blade.

[0021] In an optional embodiment, the flow guide member includes a hemispherical flow guide cover, and a convex surface of the hemispherical flow guide cover faces a side away from the blades.

[0022] In a second aspect, the present invention further provides a power generation device, comprising:

[0023] dynamo;

[0024] In the above impeller structure, the rotating shaft is connected to the rotor of the generator.

[0025] Because the power generation device includes an impeller structure and has the same effects as the impeller structure, its beneficial effects are not repeated here.

[0026] In an optional embodiment, the power generation device also includes a supporting structure and a fixed wind tail wing, the generator is rotatably connected to the supporting structure, and the fixed wind tail wing is fixedly connected to a side of the generator away from the impeller structure, so as to be suitable for driving the generator and the impeller structure to rotate relative to the supporting structure when the wind direction changes.

[0027] Beneficial effect: The wind direction change is sensed by the fixed wind tail wing, so as to drive the impeller structure to rotate when the wind direction changes, so that it always remains facing the incoming wind side, thereby improving the efficiency of wind energy capture. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A front view of an impeller structure and a power generation device according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1 The side view of the impeller structure and the power generation device shown;

[0031] Figure 3 for Figure 1 A is a partial enlarged schematic diagram of the middle part.

[0032] Description of reference numerals:

[0033] 11. guide member; 12. guide plate; 13. blade; 131. yielding portion; 132. air inlet; 133. air outlet; 134. wind receiving portion; 14. connecting rod; 15. connecting member; 21. fixed wind tail wing; 22. bearing; 23. protective shell; 24. supporting structure; 31. rotating shaft; 32. coupling; 33. generator; 41. mounting hole. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0035] Combine the following Figures 1 to 3 , describing an embodiment of the present invention.

[0036] According to an embodiment of the present invention, on the one hand, an impeller structure is provided, comprising:

[0037] The rotating shaft 31 is adapted to rotate around its own axis;

[0038] The blade 13 is fixedly connected to the rotating shaft 31. The blade 13 is arc-shaped and has a channel inside. The channel extends along the arc direction of the blade 13, and an air inlet 132 and an air outlet 133 are formed at both ends of the channel along the extension direction.

[0039] The side wall of the blade 13 at the air inlet 132 facing the windward side is partially penetrated to form a yielding portion 131, and the side wall of the blade 13 at the air inlet 132 facing away from the windward side is formed with a wind receiving portion 134;

[0040] A plurality of blades 13 are provided, and the air outlet 133 of one blade 13 is correspondingly provided with the air inlet 132 of another adjacent blade 13 .

[0041] The impeller structure provided in this embodiment has a channel opened on the blade 13, and the air outlet 133 of one blade 13 and the air inlet 132 of another adjacent blade 13 are arranged correspondingly, so that after the breeze enters the channel of one blade 13, it can enter the next blade 13, thereby realizing the continuous utilization of wind energy on the impeller structure and improving the wind energy capture efficiency in the breeze condition.

[0042] Specifically, a channel extending along the arc direction is formed inside the blade 13, the channel passes through the blade 13, and an air inlet 132 and an air outlet 133 are formed on the surface of the blade 13. Figure 1 and Figure 2 As shown, the side wall of the blade 13 on the side facing the windward surface at the air inlet 132 is partially penetrated to form a yielding portion 131, and a wind receiving portion 134 is formed on the side wall away from the windward surface, wherein the yielding portion 131 is used to form a gap on the channel side wall of the blade 13 so that the wind blowing from the windward side can directly blow on the wind receiving portion 134 through the aforementioned gap, and the wind receiving portion 134 is used to receive the blowing wind and guide the wind into the inside of the channel of the blade 13.

[0043] The number of blades 13 is multiple, and the multiple blades 13 are arranged at intervals and arranged in an array along the circumferential direction of the rotating shaft 31. The air outlet 133 of one blade 13 and the air inlet 132 of another blade 13 are arranged close to each other, so that the wind in the channel of the previous blade 13 can flow into the channel of the next blade 13 after flowing out, thereby realizing the continuous use of wind energy on the impeller structure. Compared with the impeller structure in the related art, which can only capture wind energy well under a certain wind speed and has poor wind energy capture efficiency under breeze conditions, the impeller structure provided in this embodiment can capture wind energy well under breeze conditions, thereby improving the wind energy capture efficiency under breeze conditions. The impeller structure provided in this embodiment can also operate in a breeze environment, and has low manufacturing and operating costs, and can be installed and used in multiple places in life.

[0044] In one embodiment, in combination Figures 1 to 3As shown, along the direction from the air inlet 132 to the air outlet 133, the inner diameter of the channel gradually decreases.

[0045] The impeller structure provided in this embodiment realizes continuous utilization and maximum capture of wind energy inside the impeller structure by constructing the channel on the blade 13 into a structure with a gradually decreasing inner diameter along the airflow direction so that the breeze can smoothly flow out of the previous blade 13 and flow to the next blade 13.

[0046] Specifically, the airflow enters the channel from the air inlet 132 and flows out from the air outlet 133. As the inner diameter of the channel gradually decreases, the velocity of the airflow gradually increases, which is conducive to the breeze flowing smoothly from the channel of the previous blade 13 to the next blade 13, and is conducive to the reuse of breeze on the impeller structure and the maximum capture of wind energy.

[0047] In one embodiment, in combination Figures 1 to 3 As shown, the impeller structure further includes a guide plate 12 , which is connected between the rotating shaft 31 and the blades 13 , and is fixedly connected to the end surface of the yielding portion 131 to guide the airflow into the air inlet 132 .

[0048] The impeller structure provided in this embodiment is fixedly connected to the end surface of the yielding portion 131 through the guide plate 12 to guide the airflow and ensure that the airflow can smoothly transition to the inside of the channel of the blade 13.

[0049] Specifically, the guide plate 12 is a plate-shaped structure with a flat surface, and the blade 13 has a chamfered design, and the chamfered portion is configured as a clearance portion 131. The guide plate 12 is fixedly connected to the chamfered end surface of the clearance portion 131 to further guide the wind and ensure that the wind can smoothly transition to the inside of the channel of the blade 13. The wind blown from the channel of the previous blade 13 can flow to the guide plate 12 connected to the next blade 13 and enter the channel of the blade 13 under its guidance, or directly enter the channel of the next blade 13.

[0050] In one embodiment, in combination Figures 1 to 3 As shown, a connecting rod 14 is provided between the guide plate 12 and the rotating shaft 31 , one end of the connecting rod 14 is connected to the rotating shaft 31 , and the other end is connected to the guide plate 12 .

[0051] The impeller structure provided in this embodiment increases the rotational torque of the guide plate 12 and the blades 13 on the rotating shaft 31 by disposing a connecting rod 14 between the guide plate 12 and the rotating shaft 31 .

[0052] Specifically, the guide plate 12 is connected to the rotating shaft 31 via the connecting rod 14 to increase the force arm of the force of the guide plate 12 and the blade 13 driving the rotating shaft 31 to rotate, thereby reducing the force required to drive the rotating shaft 31 to rotate, which is conducive to the impeller structure working in a light wind. The material of the connecting rod 14 includes carbon fiber, aluminum alloy or plastic, etc. As a preferred embodiment, the connecting rod 14 is made of carbon fiber to reduce its weight.

[0053] In one embodiment, in combination Figures 1 to 3 As shown, the connecting rod 14 comprises a telescopic rod.

[0054] In the impeller structure provided in this embodiment, the guide plate 12 and the rotating shaft 31 are connected by a telescopic rod, so that the interval between the guide plate 12 and the rotating shaft 31 can be adjusted according to actual needs.

[0055] Specifically, the connecting rod 14 includes a telescopic rod or a fixed rod. Preferably, the connecting rod 14 is a telescopic rod to facilitate adjustment of the spacing between the guide plate 12 and the rotating shaft 31. Further, the telescopic rod is in the shape of a straight rod or a bent rod as a feasible implementation form. Figure 3 As shown, the telescopic rod includes a plurality of standard sections 141, each of which has a plurality of rows of mounting holes 41 spaced apart along its length direction, and each row of mounting holes 41 has a plurality of mounting holes 41. The mounting holes 41 on one standard section 141 are connected to mounting holes 41 in different rows on another adjacent standard section 141, so as to change the overall length of the telescopic rod, and to change the angle between two adjacent standard sections 141 by connecting to mounting holes 41 in different rows, so as to adjust the angle of the blade 13 according to actual conditions.

[0056] In one embodiment, in combination Figures 1 to 3 As shown, a connecting member 15 is provided between the rotating shaft 31 and the connecting rod 14 , and the connecting member 15 is suitable for fixedly connecting the rotating shaft 31 and the connecting rod 14 .

[0057] Specifically, the connecting member 15 is constructed as a tubular structure and is sleeved on the rotating shaft 31 . The connecting member 15 is fixedly connected to the rotating shaft 31 and is fixedly connected to one end of the connecting rod 14 close to the rotating shaft 31 .

[0058] In some embodiments not shown, the connecting member 15 can also be constructed as a block structure or a plate structure, etc. The connecting member 15 is fixedly connected to the rotating shaft 31 and fixedly connected to one end of the connecting rod 14 close to the rotating shaft 31. Alternatively, the connecting member 15 is constructed as a threaded rod, one end of which is threadedly connected to the rotating shaft 31, and the other end is threadedly connected to the connecting rod 14.

[0059] In one embodiment, in combination Figures 1 to 3As shown, the impeller structure further includes a flow guide 11 , which is connected to the rotating shaft 31 and is located on the windward side of the blade 13 . The flow guide 11 is suitable for guiding the airflow toward the blade 13 .

[0060] The impeller structure provided in this embodiment provides a flow guide 11 on the windward side of the blade 13 so as to effectively guide the wind to flow toward the blade 13 .

[0061] Specifically, the guide member 11 is rotatably connected to the rotating shaft 31 via a bearing so that the guide member 11 does not rotate with the rotation of the rotating shaft 31 , which is beneficial to maintaining stable guidance of the airflow, improving the stability and continuity of wind energy, and can effectively guide the wind to the guide plate 12 .

[0062] In one embodiment, in combination Figures 1 to 3 As shown, the flow guide 11 includes a hemispherical flow guide cover, and the convex surface of the hemispherical flow guide cover faces the side away from the blades 13.

[0063] Specifically, the guide member 11 is configured as a rotating structure, such as a hemisphere, a cone, a hemispherical cover, an arc-shaped cover or a conical cover. The rotation center line of the guide member 11 coincides with the axis of the rotating shaft 31, and the convex surface of the guide member 11 faces the windward side to facilitate guiding the airflow to the guide plate 12 and the blades 13.

[0064] According to an embodiment of the present invention, on the other hand, there is also provided a power generation device, comprising:

[0065] Generator 33;

[0066] In the above impeller structure, the rotating shaft 31 is connected to the rotor of the generator 33 .

[0067] Specifically, the generator 33 includes a transmission shaft fixedly connected to its rotor, a portion of the transmission shaft extends out of the housing of the generator 33, and is coaxially fixedly connected to the rotating shaft 31 through the coupling 32. The blades 13 drive the rotating shaft 31 to rotate under the action of wind, and the rotating shaft 31 drives the rotor of the generator 33 to rotate through the coupling 32, so that the generator 33 generates electricity. The power generation device provided in this embodiment can also operate in a breeze environment, can be installed and used in multiple places in life, has low manufacturing and operating costs, and is also suitable for installation and use in grassroots areas.

[0068] In one embodiment, in combination Figures 1 to 3 As shown, the power generation device also includes a supporting structure 24 and a fixed wind tail wing 21, the generator 33 is rotatably connected to the supporting structure 24, and the fixed wind tail wing 21 is fixedly connected to the side of the generator 33 away from the impeller structure, so as to be suitable for driving the generator 33 and the impeller structure to rotate relative to the supporting structure 24 when the wind direction changes.

[0069] The power generation device provided in this embodiment senses the change of wind direction through the wind-fixing tail wing 21, so as to drive the impeller structure to rotate when the wind direction changes, so that the impeller structure always remains facing the wind side, thereby improving the wind energy capture efficiency.

[0070] Specifically, the wind-fixing tail wing 21 is plate-shaped, and its main plane is parallel to the direction of gravity. The generator 33 is rotatably connected to the support structure 24, and the rotation plane is parallel to the horizontal direction. When the wind direction changes, the wind-fixing tail wing 21 drives the generator 33 to rotate relative to the support structure 24, so that the impeller structure is always facing the wind side, so as to maximize the wind energy capture efficiency. The support structure 24 can be a support rod, a frame or a tower.

[0071] Furthermore, a protective shell 23 is provided outside the generator 33 to protect the generator from the external environment. The fixed-wind tail 21 can be directly fixedly connected to the protective shell 23; or directly fixedly connected to the generator 33 body. In this case, the protective shell 23 is provided with a first clearance hole corresponding to the fixed-wind tail 21, so that the fixed-wind tail 21 passes through the first clearance hole and is fixedly connected to the generator 33 body.

[0072] As a feasible implementation form, a protective shell 23 is fixedly connected to the outside of the generator 33, and the protective shell 23 is rotatably connected to the support structure 24 through a bearing 22; as an additional implementation form, the generator 33 body is rotatably connected to the support structure 24 through a bearing 22, and the protective shell 23 is provided with a second clearance hole corresponding to the bearing 22 and / or the support structure 24, so that the bearing 22 and / or the support structure 24 can pass through the second clearance hole to form a rotational connection with the generator 33 body.

[0073] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. An impeller structure, characterized in that: include: A rotating shaft (31), adapted to rotate around its own axis; A blade (13) is fixedly connected to the rotating shaft (31); the blade (13) is arc-shaped and has a channel inside; the channel extends along the arc direction of the blade (13), and an air inlet (132) and an air outlet (133) are respectively formed at two ends of the channel along the extension direction; The blade (13) partially penetrates the side wall of the air inlet (132) facing the windward side to form a yielding portion (131), and the blade (13) forms a wind receiving portion (134) on the side wall of the air inlet (132) facing away from the windward side; The blades (13) are provided in plurality, and the air outlet (133) of one blade (13) and the air inlet (132) of another adjacent blade (13) are provided correspondingly.

2. The impeller structure according to claim 1, characterized in that: Along the direction from the air inlet (132) to the air outlet (133), the inner diameter of the channel gradually decreases.

3. The impeller structure according to claim 1, characterized in that: The impeller structure further comprises a guide plate (12), wherein the guide plate (12) is connected between the rotating shaft (31) and the blade (13), and the guide plate (12) is fixedly connected to the end surface of the yielding portion (131) so as to be suitable for guiding the airflow to enter the air inlet (132).

4. The impeller structure according to claim 3, characterized in that: A connecting rod (14) is provided between the guide plate (12) and the rotating shaft (31); one end of the connecting rod (14) is connected to the rotating shaft (31), and the other end is connected to the guide plate (12).

5. The impeller structure according to claim 4, characterized in that: The connecting rod (14) comprises a telescopic rod.

6. The impeller structure according to claim 4, characterized in that: A connecting piece (15) is provided between the rotating shaft (31) and the connecting rod (14), and the connecting piece (15) is suitable for fixedly connecting the rotating shaft (31) and the connecting rod (14).

7. The impeller structure according to claim 6, characterized in that: The impeller structure further comprises a flow guide (11), wherein the flow guide (11) is connected to the rotating shaft (31) and is located on the windward side of the blade (13), and the flow guide (11) is suitable for guiding the airflow toward the blade (13).

8. The impeller structure according to claim 7, characterized in that: The flow guide (11) comprises a hemispherical flow guide cover, wherein the convex surface of the hemispherical flow guide cover faces the side away from the blade (13).

9. A power generation device, characterized in that: include: Generator (33); The impeller structure according to any one of claims 1 to 8, wherein the rotating shaft (31) is connected to the rotor of the generator (33).

10. The power generation device according to claim 9, characterized in that: The power generation device also includes a support structure (24) and a fixed wind tail wing (21), the generator (33) is rotatably connected to the support structure (24), and the fixed wind tail wing (21) is fixedly connected to a side of the generator (33) away from the impeller structure, so as to be suitable for driving the generator (33) and the impeller structure to rotate relative to the support structure (24) when the wind direction changes.

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