Wind wheel structure with flow guide cone

Abstract

The wind wheel structure comprises a cylinder, the flow guide cone, a main blade and a stabilizing ring, the flow guide cone is a thin-shell rotary body with the equal wall thickness, and the thin-shell rotary body is formed by rotating an outer contour line around the axis of the cylinder by a circle, and the outer contour line is formed by sequentially and smoothly connecting a first arc section, a second arc section, a straight line section and a third arc section; the outer contour line is gradually away from the axis of the cylinder from the starting end of the first arc section to the end point of the third arc section; the starting end of the first arc section intersects with the inner wall of the thin-shell rotary body forming the flow guide cone and the surface of the column body; a plurality of main blades are uniformly distributed on the circumference of the large end of the flow guide cone and extend towards the column body; the main blades are longitudinally parallel to the axis of the diversion cone; the first arc section is used for forming a gas inlet area with a flaring, and the second arc section forms a gas compression area for increasing the gas flow rate; the linear section and the third arc section form a gas flow guide area; the stabilizing ring is of an annular structure and is formed on the throwing-out side of the main blade in a sleeving mode, and the stabilizing ring is located at the end close to the column body in the axial direction.

Description

Technical Field

[0001] This application relates to the field of wind turbine technology, specifically to a wind turbine structure with a guide cone. Background Technology

[0002] Centrifugal fans are mechanical structures that rely on the mechanical energy input from a motor to drive the blades to rotate and complete the gas transport work. The impeller of a traditional centrifugal fan consists of a circular plate and several blades distributed circumferentially on the plate, forming a large space in the middle. This has two shortcomings: first, the center of gravity of the impeller is far from the circular plate that serves as the power input, causing the cantilever to be too long and resulting in greater wear and tear on the motor bearings due to uneven load; second, it is easy to form turbulence in the air intake space, causing fan vibration and low air delivery efficiency. Therefore, further research and development are necessary. Summary of the Invention

[0003] The purpose of this application is to provide a wind turbine structure with a guide cone to solve the problems in the prior art.

[0004] To achieve the above objectives, this application provides the following technical solution: a wind turbine structure with a guide cone, comprising:

[0005] Column 5,

[0006] The guide cone 4 is a thin-shell rotating body with uniform wall thickness, formed by the outer contour line of the first arc segment 401, the second arc segment 402, the straight line segment 403, and the third arc segment 404 being smoothly connected in sequence and rotating around the axis of the column 5. The outer contour line gradually moves away from the axis of the column 5 from the starting end of the first arc segment 401 to the ending end of the third arc segment 404. The starting end of the first arc segment 401 and the inner wall of the thin-shell rotating body forming the guide cone intersect with the surface of the column 5.

[0007] The main blades 2 are evenly distributed around the circumference of the large end of the guide cone 4 and extend toward the column 5; the longitudinal direction of the main blades 2 is parallel to the axis of the guide cone 4.

[0008] The first arc segment 401 is used to form an air intake area with a flared opening; the second arc segment 402 forms a gas compression area to increase the flow velocity of gas toward the main blade 2; the straight segment 403 and the third arc segment 404 form a gas guiding area.

[0009] The stabilizing ring 1 is a circular ring structure that is sleeved on the ejection side of the main blade 2 and is located axially near one end of the column 5.

[0010] Furthermore, the guide cone 4 also has a straight section 405 that is perpendicular to the axis of the column 5 and extends radially, and the straight section 405 is tangent to the end of the third arc segment 404.

[0011] Furthermore, the main blade 2 is formed in the straight section 405 and the ejection edge of the main blade 2 is flush with the edge of the straight section 405, and the suction edge extends at least radially to the region of the third arc segment 404.

[0012] Furthermore, the wind turbine structure with the guide cone also includes a rear blade 3 formed on the other side of the straight section 405 relative to the main blade 2.

[0013] Furthermore, the column 5 has a through hole 6 formed along its own axis for connecting with the motor shaft 7.

[0014] Furthermore, the impeller structure with the guide cone also includes a number of reinforcing fins 8 that extend radially from the surface of the column 5 and are connected to the inner wall of the flow cone 4 and are arranged in a vortex configuration. The reinforcing fins 8 are evenly distributed around the axis of the column 5. An additional fin 9 is also formed on the inner wall of the flow cone 4 between any two adjacent reinforcing fins 8.

[0015] Furthermore, if the radius of the ejection side edge of the main blade 2 is X, then the first arc segment 401 is an inward concave arc with a radius of 1.15X, the second arc segment 402 is an outward convex arc with a radius of 0.63X, the angle B between the straight line segment 403 and the axis of the cylinder 5 is 19-20 degrees, and the third arc segment 404 is an inward concave arc with a radius of 0.16X.

[0016] Furthermore, assuming the length of the main blade 2 is Z, and taking the axis of the column 5 and the end face of the main blade 2 near the column 5 as the radial reference and axial reference respectively, then: the distance Z3 = 0.0625Z above the axial reference is the intersection point of the starting end of the first arc segment 401 and the outer circular surface of the column 5; the position of the ending point of the first arc segment 401 is X1 = 0.45Z from the radial reference and Z1 = 0.375Z below the axial reference; the starting position of the straight segment 403 is X2 = 0.72X from the radial reference and Z2 = 0.76Z below the axial reference.

[0017] The beneficial effects of this application are as follows: The wind turbine structure with a guide cone provided by this application, by setting the guide cone, wherein the first arc segment of the guide cone is used to form an air intake zone with a flared opening, which can reduce the resistance of the surrounding gas entering the wind turbine and make it easier to draw in air; the second arc segment forms a gas compression zone to increase the flow velocity of the gas towards the main blade, thus further increasing the negative pressure effect of the air intake zone, making it easier to draw in more air; the straight segment and the third arc segment form a gas guiding zone, which guides a portion of the air to the position near the lower end of the main blade, so that the air can be evenly delivered along the entire length of the main blade, thereby improving the airflow efficiency. It boasts high air delivery efficiency. Furthermore, due to the airflow being guided by the guide cone, the airflow is smooth, effectively reducing impeller vibration and noise, further enhancing air delivery efficiency. Simultaneously, since the column is located at the small end of the guide cone, and the through hole connecting to the motor shaft is also located on the column, the inner wall space of the guide cone can also accommodate part of the motor. Therefore, the center of gravity of the entire impeller is closer to the bearing position of the motor shaft. This significantly reduces the cantilever length of the motor shaft, which is beneficial to improving the service life of the motor shaft and the bearings on the motor, thereby improving the service life of the fan equipped with this impeller. Attached Figure Description

[0018] Figure 1 This is a perspective view of the wind turbine structure with a guide cone (combined with a motor) according to this application.

[0019] Figure 2 This is a cross-sectional view of the wind turbine structure with a guide cone according to this application;

[0020] Figure 3 This is a perspective view of the wind turbine structure with a guide cone according to this application.

[0021] In the diagram: 1. Stabilizing ring; 2. Main blade; 3. Rear blade; 4. Guide cone; 401. First arc segment; 402. Second arc segment; 403. Straight segment; 404. Third arc segment; 405. Flat segment; 5. Column; 6. Through hole; 7. Motor shaft; 8. Reinforcing fins; 9. Additional fins. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Please see Figures 1 to 3 A wind turbine structure with a guide cone includes a column 5, a guide cone 4, a main blade 2, and a stabilizing ring 1, wherein:

[0024] The guide cone 4 is a thin-shell rotating body with uniform wall thickness, formed by the smooth connection of the outer contour line of the first arc segment 401, the second arc segment 402, the straight line segment 403, and the third arc segment 404 in sequence, rotating around the axis of the cylinder 5. The outer contour line gradually moves away from the axis of the cylinder 5 from the starting end of the first arc segment 401 to the ending end of the third arc segment 404. The starting end of the first arc segment 401 and the inner wall of the thin-shell rotating body forming the guide cone intersect with the surface of the cylinder 5. The main blades 2 are evenly distributed around the circumference of the large end of the guide cone 4. Extending towards the column 5; the main blade 2 is longitudinally parallel to the axis of the guide cone 4; the first arc segment 401 is used to form an air intake area with a flared opening, and the second arc segment 402 forms a gas compression area to increase the flow velocity of the gas towards the main blade 2; the straight segment 403 and the third arc segment 404 form a gas guiding area; the stabilizing ring 1 is a circular ring structure sleeved on the ejection side of the main blade 2 and is located axially near the end of the column 5, used to connect the ends of the main blade 2 into one piece to maintain the strength and stability of the main blade 2.

[0025] According to the structure provided in this embodiment, the wind turbine structure with a guide cone provided in this application, by setting the guide cone 4, wherein the first arc segment 401 of the guide cone 4 is used to form an air intake area with a flared opening, which can reduce the resistance of the surrounding gas entering the wind turbine and make it easier to draw in air; the second arc segment 402 forms a gas compression area to increase the flow velocity of the gas towards the main blade 2, thereby further increasing the negative pressure effect of the air intake area and making it easier to draw in more air; the straight segment 403 and the third arc segment 404 form a gas guiding area, which guides a portion of the air to the position near the lower end of the main blade 2, so that the air can be evenly distributed throughout the entire length of the main blade 2. The uniform airflow improves air delivery efficiency. Furthermore, the smooth airflow through the guide cone 4 effectively reduces impeller vibration and noise, further enhancing air delivery efficiency. Simultaneously, the column 5, located at the small end of the guide cone 4, and the through hole connecting to the motor shaft 7, are also located on the column 5. The inner wall space of the guide cone 4 can also accommodate a portion of the motor. Therefore, the center of gravity of the entire impeller is closer to the bearing position of the motor shaft 7. This significantly reduces the cantilever length of the motor shaft 7, which helps extend the service life of the motor shaft 7 and its bearings, thereby improving the lifespan of the fan equipped with this impeller.

[0026] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 3 The guide cone 4 also has a straight section 405 that is perpendicular to the axis of the column 5 and extends radially. The straight section 405 is tangent to the end of the third arc section 404. In this way, when the air enters through the first arc section 401, the second arc section 402, the straight section 403, and the third arc section 404 and is discharged from the straight section 405 through the main blade 2, it has less wind resistance, which is beneficial to improving the air delivery efficiency of the wind turbine.

[0027] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 3 The main blade 2 is formed on the straight section 405 and the ejection edge of the main blade 2 is flush with the edge of the straight section 405. The suction edge extends at least radially to the third arc section 404 region. In this way, the connection between the main blade 2 and the guide cone 4 can be tighter and the structural strength can be higher.

[0028] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 3 The wind turbine structure with guide cone also includes a rear blade 3 formed on the other side of the straight section 405 relative to the main blade 2. The rear blade 3 generates cooling airflow to cool the matching motor. At the same time, the rear blade 3 and the main blade 2 form a symmetrical structure at the connection of the straight section 405, which is beneficial to the stress balance of the structure.

[0029] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 3 The column 5 has a through hole 6 formed along its own axis for connecting with the motor shaft 7. In this embodiment, the through hole 6 adopts a non-circular hole structure, such as a flat hole, which facilitates the transmission connection with the motor shaft 7, avoids looseness, and helps to improve the stability of the connection.

[0030] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 3 The impeller structure with the guide cone also includes several reinforcing fins 8 that extend radially from the surface of the column 5 and are connected to the inner wall of the flow cone 4 and arranged in a vortex. The reinforcing fins 8 are evenly distributed around the axis of the column 5. An additional fin 9 is formed on the inner wall of the flow cone 4 between any two adjacent reinforcing fins 8. In this way, the reinforcing fins 8 and the additional fins 9 effectively increase the structural rigidity and strength of the guide cone 4. At the same time, they can also drive the airflow to cool the matching motor, which helps to ensure that the impeller using this impeller structure has a longer service life.

[0031] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 3 Let the radius of the ejected edge of the main blade 2 be X. Then, the first arc segment 401 is an inward concave arc with a radius of 1.15X, the second arc segment 402 is an outward convex arc with a radius of 0.63X, the angle B between the straight segment 403 and the axis of the cylinder 5 is 19-20 degrees, and the third arc segment 404 is an inward concave arc with a radius of 0.16X. In this way, a reasonable airflow guiding space can be formed to obtain a better airflow guiding effect, which is conducive to improving the air delivery efficiency of this impeller.

[0032] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 3Let the length of the main blade 2 be Z. Taking the axis of the column 5 and the end face of the main blade 2 near the column 5 as the radial reference and axial reference respectively, then the distance Z3 = 0.0625Z above the axial reference is the intersection point of the starting end of the first arc segment 401 and the outer circular surface of the column 5; the position of the end point of the first arc segment 401 is X1 = 0.45Z from the radial reference and Z1 = 0.375Z below the axial reference; the starting position of the straight segment 403 is X2 = 0.72X from the radial reference and Z2 = 0.76Z below the axial reference. In this way, the optimal size parameters of the guide cone can be determined to form a reasonable guide space, so as to obtain a better air guide effect and improve the air delivery efficiency of this impeller.

[0033] Here, the wind turbine in this embodiment is made of plastic or nylon, and the guide cone 4, main blade 2, stabilizing ring 1, rear blade, column 5, through hole 6, reinforcing fin 8, and additional fin 9 are integrally molded by injection molding process.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] In the description of this application, it should be understood that the terms "upper", "lower", "lower than", "higher than", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine structure with a guide cone, characterized in that, include: Column (5), The guide cone (4) is a thin-shell rotating body with equal wall thickness, formed by the smooth connection of the outer contour line of the first arc segment (401), the second arc segment (402), the straight line segment (403), and the third arc segment (404) in sequence, rotating around the axis of the column (5). The outer contour line gradually moves away from the axis of the column (5) from the starting end of the first arc segment (401) to the ending end of the third arc segment (404). The starting end of the first arc segment (401) and the inner wall of the thin-shell rotating body forming the guide cone intersect with the surface of the column (5). The main blades (2) are evenly distributed around the large end of the guide cone (4) and extend toward the column (5); the main blades (2) are parallel to the axis of the guide cone (4) in the longitudinal direction. The first arc segment (401) is used to form an air intake area with a flared opening, the second arc segment (402) forms a gas compression area to increase the flow rate of gas toward the main blade (2); the straight segment (403) and the third arc segment (404) form a gas guiding area; The stabilizing ring (1) is a circular ring structure that is sleeved on the ejection side of the main blade (2) and is located axially near one end of the column (5).

2. The wind turbine structure with a guide cone according to claim 1, characterized in that: The guide cone (4) also has a straight section (405) that is perpendicular to the axis of the column (5) and extends radially, and the straight section (405) is tangent to the end of the third arc segment (404).

3. The wind turbine structure with a guide cone according to claim 2, characterized in that: The main blade (2) is formed in the straight section (405) and the ejection edge of the main blade (2) is flush with the edge of the straight section (405), and the suction edge extends at least radially to the region of the third arc segment (404).

4. The wind turbine structure with a guide cone according to claim 2, characterized in that: It also includes a rear blade (3) formed on the other side of the straight section (405) relative to the main blade (2).

5. The wind turbine structure with a guide cone according to claim 1, characterized in that: The column (5) has a through hole (6) formed along its own axis for connecting with the motor shaft (7).

6. The wind turbine structure with a guide cone according to claim 2, characterized in that: It also includes a number of reinforcing fins (8) that extend radially from the surface of the column (5) and are connected to the inner wall of the flow cone (4) and arranged in a vortex. The reinforcing fins (8) are evenly distributed around the axis of the column (5). Additional fins (9) are also formed on the inner wall of the flow cone (4) between any two adjacent reinforcing fins (8).

7. The wind turbine structure with a guide cone according to claim 1, characterized in that: Let the radius of the ejection side edge of the main blade (2) be X. Then, the first arc segment (401) is an inward concave arc with a radius of 1.15X, the second arc segment (402) is an outward convex arc with a radius of 0.63X, the angle B between the straight line segment (403) and the axis of the cylinder (5) is 19-20 degrees, and the third arc segment (404) is an inward concave arc with a radius of 0.16X.

8. The wind turbine structure with a guide cone according to claim 7, characterized in that: Let the length of the main blade (2) be Z. Taking the axis of the column (5) and the end face of the main blade (2) near the column (5) as the radial reference and the axial reference respectively, then the distance Z3 = 0.0625Z above the axial reference is the intersection point of the starting end of the first arc segment (401) and the outer circular surface of the column (5); the position of the end point of the first arc segment (401) is the distance X1 = 0.45Z from the radial reference and the distance Z1 = 0.375Z below the axial reference in the axial direction; the starting position of the straight segment (403) is the distance X2 = 0.72X from the radial reference and the distance Z2 = 0.76Z below the axial reference.

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