Wind wheel assembly and air handling device

Abstract

The utility model discloses an air handling device and wind wheel assembly. Wherein, wind wheel assembly includes blade, and the blade includes first blade part and second blade part, and a plurality of blade is arranged along the circumferential interval of wind wheel assembly to form air flow channel, and first blade part and second blade part are adjacent arrangement or interval arrangement. First blade part is used for driving gas flow to form air flow, and second blade part is used for guiding at least part air flow formed by first blade part to the axis direction of wind wheel assembly.

Description

[0001] This application claims priority to Chinese Patent Application No. 202520636034.3, filed on April 2, 2025, entitled "Windmill Assembly, Air Guide Assembly and Air Outlet Grille for Air Handling Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This utility model belongs to the field of electrical equipment technology, specifically relating to a wind turbine assembly and an air handling device. Background Technology

[0003] When air purifiers and other air handling equipment use pure oblique flow blades, their pressure holding capacity is insufficient, making them unable to cope with high resistance scenarios. If pure centrifugal blades are used, although the pressure holding capacity is sufficient, the airflow is prone to impacting the duct wall, causing energy loss and generating noise. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the related art.

[0005] Therefore, a first aspect of the present invention provides a wind turbine assembly.

[0006] A second aspect of this utility model provides an air handling device.

[0007] In view of this, according to a first aspect of the present invention, a wind turbine assembly is provided, comprising: blades, each blade including a first blade portion and a second blade portion, a plurality of said blades being arranged at circumferential intervals along the wind turbine assembly to form an airflow channel, the first blade portion and the second blade portion being arranged adjacently or at intervals; the first blade portion being used to drive gas flow to form an airflow, and the second blade portion being at least used to guide at least a portion of the airflow formed by the first blade portion toward the axial direction of the wind turbine assembly.

[0008] In one possible implementation, at least one of the blades includes two regions forming an angle, wherein a portion of the two regions closer to the tip of the blade is used to guide airflow toward the axial direction of the wind turbine assembly; the two regions forming the angle include the first blade portion and the second blade portion.

[0009] In one possible implementation, the first blade portion is closer to the tail of the blade than the second blade portion, and the second blade portion is closer to the tip of the blade than the first blade portion; wherein the second blade portion is twisted relative to the first blade portion, or, along the direction from the tail to the tip of the blade, the second blade portion is inclined relative to the axis of the wind turbine assembly, or, the inclination of the second blade portion is greater than the inclination of the first blade portion, or, the angle between the tangent at the trailing edge of the blade and the axis of the wind turbine assembly is γ1, and the angle between the tangent at the tip of the trailing edge of the blade and the axis of the wind turbine assembly is γ2, wherein γ1 is less than γ2.

[0010] In one possible implementation, the first blade portion includes a centrifugal portion, at least for driving gas from the central region of the wind turbine assembly to the edge region of the wind turbine assembly; the second blade portion includes a diagonal portion, at least for guiding the gas flow direction toward the axial direction of the wind turbine assembly.

[0011] In one possible implementation, the second blade portion includes at least a portion of the trailing edge of the blade; the second blade portion is inclined relative to the first blade portion toward the axis of the wind turbine assembly.

[0012] In one possible implementation, the blade further includes a twist curve formed at the junction of the first blade portion and the second blade portion and located on the windward side of the blade; the distance between the twist curve and the trailing edge of the blade gradually increases along the direction from the tail to the tip of the blade.

[0013] In one possible implementation, the end of the torsion curve near the top of the blade is formed as the apex of the torsion curve; on the radial section of the wind turbine assembly passing through the apex, an intersection point is formed at the intersection of the trailing edge of the blade and the windward side of the blade, and the line connecting the intersection point and the apex forms an angle θ with the tangent of the blade at the apex, where 0° < θ ≤ 45°.

[0014] In one possible implementation, the ratio of the area of ​​the second blade portion to the area of ​​the blade is greater than 0% and less than 100%.

[0015] In one possible implementation, the blade further includes a rectification region disposed on the side of the second blade portion opposite to the tail portion of the blade; wherein the area of ​​the rectification region is 5% to 15% of the area of ​​the blade.

[0016] In one possible implementation, the rectifying region is an arc-shaped plate structure that convexes outward relative to the axis of the wind turbine assembly; the rectifying region extends along the axial direction of the wind turbine assembly.

[0017] In one possible implementation, the distance between the rectifier region on the side opposite to the tail of the blade and the second blade portion gradually increases along the direction from the leading edge to the trailing edge of the blade.

[0018] In one possible implementation, the leading edge of the blade includes a convex arcuate structure; along the direction from the tail to the top of the blade, the leading edge of the blade gradually approaches the axis of the wind turbine assembly.

[0019] In one possible implementation, the thickness of the leading edge of the blade is less than the thickness of other regions of the blade; the thickness of the leading edge of the blade gradually decreases along the direction from the tail to the tip of the blade.

[0020] In one possible implementation, the tangent at the leading edge of the blade near the tip of the blade extends along the axial direction of the wind turbine assembly; the tangent at the leading edge of the blade near the tail of the blade is perpendicular to the axial direction of the wind turbine assembly.

[0021] In one possible implementation, the maximum distance between the trailing edge of the blade and the axis of the wind turbine assembly is R, the distance between the leading edge of the blade near the top of the blade and the axis of the wind turbine assembly is R1, and the distance between the leading edge of the blade near the tail of the blade and the axis of the wind turbine assembly is R2; wherein, 0.45R≤R1≤0.45R, 0.7R≤R2≤0.8R.

[0022] In one possible implementation, the wind turbine assembly further includes: a hub connected to the top of the blade; the trailing edge of the blade extending out of the hub, wherein at least a portion of the second blade portion is located outside the hub.

[0023] According to a second aspect of the present invention, an air handling device is provided, comprising: an air duct; and a fan assembly as described in any of the preceding embodiments, disposed in the air duct.

[0024] The beneficial effects of this utility model are:

[0025] In this invention, the blade includes a first blade section and a second blade section, which are arranged adjacently or spaced apart. The blades drive the gas to form a continuous motion trajectory. Several blades are arranged circumferentially around the wind turbine assembly to form an airflow channel, enabling gas transport and driving the gas to flow through the channel to form an airflow. The first blade section provides pressure holding capacity to drive gas flow and form an airflow. The second blade section is used to adjust the airflow direction, guiding at least a portion of the airflow formed by the first blade section towards the axial direction of the wind turbine assembly, reducing airflow impact on the duct wall, reducing energy loss, and lowering noise. The cooperation of the first and second blade sections satisfies both the pressure holding requirement to drive gas flow and the adjustment of the airflow direction to guide at least a portion of the airflow formed by the first blade section towards the axial direction of the wind turbine assembly, reducing airflow collision with the duct wall, reducing energy loss, lowering noise, and improving the energy efficiency of the wind turbine assembly.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A three-dimensional structural diagram of the wind turbine assembly provided in this embodiment of the utility model. Figure 1 ;

[0029] Figure 2 A three-dimensional structural diagram of the wind turbine assembly provided in this embodiment of the utility model. Figure 2 ;

[0030] Figure 3 for Figure 2 Enlarged view at point M;

[0031] Figure 4 A three-dimensional structural diagram of the wind turbine assembly provided in this embodiment of the utility model. Figure 3 ;

[0032] Figure 5 for Figure 4 A schematic diagram of the radial section of the wind turbine assembly provided in the illustrated embodiment;

[0033] Figure 6 for Figure 5 Enlarged view at point N;

[0034] Figure 7 A three-dimensional structural diagram of the wind turbine assembly provided in this embodiment of the utility model. Figure 4 ;

[0035] Figure 8 A three-dimensional structural diagram of the wind turbine assembly provided in this embodiment of the utility model. Figure 5 ;

[0036] Figure 9 This is a schematic diagram of the structure of the air handling equipment provided in an embodiment of the present utility model.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100: Wind turbine assembly; 10: Blade; 11: First blade section; 12: Second blade section; 13: Rectifying zone; 14: Top; 15: Tail; 16: Trailing edge; 17: Leading edge; 18: Windward side; 19: Airflow channel; 20: Hub; 30: Annular guide vane; 40: Impeller cover;

[0039] 200: Air handling equipment; 201: Air duct; 202: Motor. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0042] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0043] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0044] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0046] In the description of the embodiments of this utility model, as Figure 2 As shown, L1 is used to indicate the axis of the wind turbine assembly 100, which refers to the central straight line around which the wind turbine assembly 100 rotates. The axial direction or axis of the wind turbine assembly 100 refers to the direction of extension along the length of the axis of the wind turbine assembly 100. The circumferential direction of the wind turbine assembly 100 refers to the direction of circular motion around its axis, i.e., the circumferential direction of the wind turbine assembly 100. The radial direction of the wind turbine assembly 100 refers to the direction from the central region of the wind turbine assembly 100 to the edge region of the wind turbine assembly 100 within the plane of rotation. The central region of the wind turbine assembly 100 can be understood as the region close to its axis. The edge region of the wind turbine assembly 100 can be understood as the outer peripheral portion of the wind turbine assembly 100, which is away from its axis. The leading edge 17 of the blade 10 refers to the edge of the side that first contacts the gas during the rotation of the blade 10. The trailing edge 16 of blade 10 refers to the edge on one side where the airflow leaves blade 10 during its rotation. This will not be elaborated further below.

[0047] Combination Figures 1 to 8As shown, according to a first aspect of the present invention, a wind turbine assembly 100 is provided, including blades 10. Each blade 10 includes a first blade portion 11 and a second blade portion 12. A plurality of blades 10 are arranged at intervals along the circumference of the wind turbine assembly 100 to form an airflow channel 19. The first blade portion 11 and the second blade portion 12 are arranged adjacent to each other or at intervals. The first blade portion 11 is used to drive gas flow to form an airflow, and the second blade portion 12 is at least used to guide at least a portion of the airflow formed by the first blade portion 11 towards the axial direction of the wind turbine assembly 100. It is understood that in some optional embodiments, the first blade portion 11 and the second blade portion 12 are arranged adjacent to each other; or, in other optional embodiments, the wind turbine assembly 100 may further include a third blade portion, a fourth blade portion, etc., which may be connected between the first blade portion 11 and the second blade portion 12, such that the first blade portion 11 and the second blade portion 12 may be arranged at intervals. For example, a third blade portion is provided between the first blade portion 11 and the second blade portion 12, so that the first blade portion 11 and the second blade portion 12 can be provided at intervals.

[0048] The blade 10 includes a first blade portion 11 and a second blade portion 12, which are arranged adjacently or spaced apart. The blade 10 drives the gas flow to form a continuous motion trajectory. By arranging several blades 10 at intervals along the circumference of the impeller assembly 100, airflow channels 19 are formed between adjacent blades 10, enabling gas transport and driving the gas flow through the airflow channels 19 to form an airflow. The airflow channels 19 are formed between two adjacent blades 10. Several blades 10 arranged at intervals can form several airflow channels 19. In the description of this embodiment, "several" can be understood as two or more, which will not be elaborated further below.

[0049] The first blade portion 11 of the blade 10 provides pressure holding capability to drive gas flow and form an airflow. For example, the structure of the first blade portion 11 of the blade 10 can be approximately the same as the local structure of the centrifugal blade, so that the function of the first blade portion 11 is approximately the same as that of the centrifugal blade, achieving a pressure holding effect, which can drive the gas from the approximate axial direction of the wind turbine assembly 100 into the wind turbine assembly 100, and then flow in the approximate radial direction of the wind turbine assembly 100.

[0050] The second blade portion 12 is used at least to adjust the airflow direction to guide at least a portion of the airflow formed by the first blade portion 11 toward the axial direction of the wind turbine assembly 100, thereby reducing airflow impact on the duct wall, reducing energy loss, and lowering noise. In other words, the function of the second blade portion 12 of the blade 10 can be roughly the same as that of the oblique flow blade, reducing airflow impact on the duct wall, allowing the airflow to be output along the curve of the duct 201, reducing energy loss, and lowering noise.

[0051] By cooperating with the first blade section 11 and the second blade section 12, the blade 10 can both meet the pressure-holding requirements to drive gas flow and form an airflow, and adjust the direction of the airflow to guide at least a portion of the airflow formed by the first blade section 11 towards the axial direction of the wind turbine assembly 100. This reduces the collision of the airflow with the duct wall, reduces energy loss, lowers noise, and improves the energy efficiency of the wind turbine assembly 100. In other words, for at least a portion of the gas entering the wind turbine assembly 100, the gas is first pressurized and accelerated by the first blade section 11, and then redirected by the second blade section 12, making the airflow delivery smoother and thus making the wind turbine assembly 100 operate more stably.

[0052] For example, when the wind turbine assembly 100 rotates, it draws in external gas. The first blade portion 11 of the blade 10 provides pressure-holding capacity to drive gas flow and form an airflow. The second blade portion 12 of the blade 10 is at least used to guide at least a portion of the airflow formed by the first blade portion 11 towards the axial direction of the wind turbine assembly 100, allowing the gas to flow out through the airflow channel 19. This achieves gas delivery, reduces airflow collisions with the duct wall, reduces energy loss, and lowers noise.

[0053] In some embodiments, combined with Figure 7 and Figure 8 As shown, at least one blade 10 includes two regions forming an angle. The portion closer to the tip 14 of the blade 10 is used to guide airflow in the axial direction of the wind turbine assembly 100. The two regions forming the angle include a first blade portion 11 and a second blade portion 12.

[0054] Wherein, at least one blade 10 includes two regions forming an angle, meaning that some or all of the blades 10 of the wind turbine assembly 100 have two regions forming an angle. By forming two regions forming an angle, the gas flow can be turned when it reaches these two regions, guiding the gas flow through the airflow channel 19 toward the axial direction of the wind turbine assembly 100, thereby regulating the gas flow direction.

[0055] The portion closer to the top 14 of the blade 10 in both regions is farther from the air inlet side of the wind turbine assembly 100, that is, closer to the air outlet side of the wind turbine assembly 100. This portion closer to the top 14 of the blade 10 guides the airflow towards the axial direction of the wind turbine assembly 100. The airflow from the wind turbine assembly 100 impacts the duct wall, thereby reducing operating noise and improving equipment performance and user experience.

[0056] The two regions forming the angle include the first blade portion 11 and the second blade portion 12. That is, the first blade portion 11 and the second blade portion 12 form an angle, so that when the gas flows between the first blade portion 11 and the second blade portion 12, it can be turned to adjust the direction of gas flow.

[0057] In some embodiments, combined with Figure 7 and Figure 8 As shown, the first blade portion 11 is closer to the tail portion 15 of the blade 10 than the second blade portion 12. The second blade portion 12 is closer to the tip 14 of the blade 10 than the first blade portion 11. The second blade portion 12 is twisted relative to the first blade portion 11. Alternatively, along the direction from the tail portion 15 to the tip 14 of the blade 10, the second blade portion 12 is inclined relative to the first blade portion 11 towards the axis of the wind turbine assembly 100. Alternatively, the inclination degree of the second blade portion 12 is greater than that of the first blade portion 11. Alternatively, the angle between the tangent at the trailing edge 16 of the blade 10 and the axis of the wind turbine assembly 100 is γ1, and the angle between the tangent at the tip of the trailing edge 16 of the blade 10 and the axis of the wind turbine assembly 100 is γ2, where γ1 is less than γ2.

[0058] By positioning the first blade portion 11 closer to the tail portion 15 of the blade 10 compared to the second blade portion 12, the first blade portion 11 can drive the gas flow to form an airflow. Under the rotation of the blade 10, the first blade portion 11 can drive the gas flow, gradually forming an airflow with a certain speed and pressure, achieving initial pressurization and power accumulation.

[0059] By positioning the second blade portion 12 closer to the top 14 of the blade 10 compared to the first blade portion 11, the second blade portion 12 can guide the airflow towards the axial direction of the wind turbine assembly 100, adjust the airflow direction, reduce the impact of the wind turbine assembly 10's outlet airflow on the duct wall, thereby reducing the noise of the equipment operation and improving the equipment performance and user experience.

[0060] By twisting the second blade portion 12 relative to the first blade portion 11, the first blade portion 11 and the second blade portion 12 form an angle, allowing the gas to turn when flowing between the first blade portion 11 and the second blade portion 12, thereby adjusting the direction of gas flow, reducing the impact of the exhaust air of the impeller assembly 100 on the duct wall, and thus reducing the noise of the equipment operation.

[0061] By tilting the second blade portion 12 towards the axis of the wind turbine assembly 100 relative to the first blade portion 11 along the direction from the tail 15 to the top 14 of the blade 10, an angle is formed between the first blade portion 11 and the second blade portion 12, adjusting the flow direction of the airflow and guiding the airflow towards the axis of the wind turbine assembly 100, reducing the impact of the airflow from the wind turbine assembly 100 on the duct wall, thereby reducing the noise of the equipment operation and improving the performance of the equipment and the user experience.

[0062] It is understood that the first blade portion 11 may be tilted towards the axis of the wind turbine assembly 100, or it may not be tilted towards the axis of the wind turbine assembly 100 (for example, the first blade portion 11 may be parallel to the axis of the wind turbine assembly 100). The tilt of the second blade portion 12 is greater than that of the first blade portion 11, that is, the tilt of the second blade portion 12 towards the axis of the wind turbine assembly 100 is greater than that of the first blade portion 11 towards the axis of the wind turbine assembly 100, so that the first blade portion 11 and the second blade portion 12 form an angle, which adjusts the flow direction of the airflow, guides the airflow towards the axis of the wind turbine assembly 100, reduces the impact of the airflow from the wind turbine assembly 100 on the duct wall, thereby reducing the noise of the equipment operation and improving the performance of the equipment and the user experience.

[0063] like Figure 7 As shown, the trailing edge 16 of the blade 10 can be understood as the point where the trailing edge 16 of the blade 10 intersects with the annular guide vane 30. Figure 7 The dashed line Q1 is used to indicate the tangent at the trailing edge 16 of blade 10. The tip of the trailing edge 16 of blade 10 can be understood as the point where the trailing edge 16 of blade 10 intersects with the tip 14 of blade 10. Figure 7 The dashed line Q2 is used to indicate the tangent at the tip of the trailing edge 16 of the blade 10. Figure 7 The dashed line L1 indicates the axis of the wind turbine assembly 100, and the L1 within parentheses indicates a line parallel to the axis of the wind turbine assembly 100. By ensuring that γ1 is less than γ2, the first blade section 11 and the second blade section 12 can form an angle, adjusting the airflow direction and guiding the airflow towards the axis of the wind turbine assembly 100. This reduces the impact of the airflow from the wind turbine assembly 100 on the duct wall, thereby reducing the noise of the equipment during operation and improving the performance and user experience of the equipment.

[0064] For example, when the impeller assembly 100 of this embodiment is applied to the air handling equipment 200, the first blade portion 11 can drive the gas flow to form an airflow, accelerating and pressurizing the gas entering the impeller assembly 100, causing the gas to flow from the central region of the impeller assembly 100 to the edge region of the impeller assembly 100, and can be tangentially output along the edge of the impeller assembly 100, forming a high-pressure core area, providing initial pressurization and kinetic energy accumulation for subsequent processing (such as steering, conveying, etc.). The second blade portion 12 can guide at least part of the airflow formed by the first blade portion 11 towards the axial direction of the impeller assembly 100, reducing the direct impact between the air outlet of the impeller assembly 100 and the duct wall of the air handling equipment 200, thereby reducing equipment operating noise, reducing energy loss, improving the stability and uniformity of airflow, and thus improving the working efficiency of the equipment.

[0065] In some embodiments, combined with Figure 7 and Figure 8As shown, the first blade section 11 includes a centrifugal section, which is at least used to drive the gas from the central region of the wind turbine assembly 100 to the edge region of the wind turbine assembly 100. The second blade section 12 includes a diagonal flow section, which is at least used to guide the gas flow direction toward the axial direction of the wind turbine assembly 100.

[0066] By using a centrifugal section to drive gas from the central region of the wind turbine assembly 100 to its edge region, the airflow can be output tangentially along the edge of the wind turbine assembly 100. Specifically, the centrifugal section can accelerate the gas flow, acting as a pressurizer and providing kinetic energy for subsequent airflow guidance. The centrifugal section can also guide the direction of gas flow, causing the gas flow to form an airflow.

[0067] The oblique flow section guides at least a portion of the airflow output from the centrifugal section towards the axial direction of the wind turbine assembly 100, reducing the direct impact between the outlet air of the wind turbine assembly 100 and the duct wall, thus lowering noise. The oblique flow section can also guide a portion of the gas entering the inlet side of the wind turbine assembly 100, causing this portion to form an airflow that also flows towards the axial direction of the wind turbine assembly 100, further reducing the direct impact between the outlet air of the wind turbine assembly 100 and the duct wall, and lowering noise.

[0068] By combining the centrifugal section and the oblique flow section, airflow can be processed in stages. The centrifugal section pressurizes and accelerates the gas, while the oblique flow section guides the airflow, reducing direct impact between the airflow and the duct wall, improving airflow stability and efficiency, and reducing noise. Furthermore, the oblique flow section also reduces vortex separation during centrifugal operation, lowering airflow friction noise.

[0069] Specifically, the first blade section 11 includes a centrifugal section. Rotation of the impeller assembly 100 drives the centrifugal section to rotate, drawing gas from the inlet side of the impeller assembly 100 to its central region. Based on the principle of centrifugal force, the gas in the central region of the impeller assembly 100 is subjected to centrifugal force and thrown from the center towards the edge region. This process increases the gas flow velocity, providing a higher kinetic energy basis for subsequent airflow processing (e.g., redirection, conveying). As the centrifugal section rotates, gas accumulates in the edge region of the impeller assembly 100, increasing the gas pressure and achieving pressurization. In practical applications (e.g., in ventilation systems), this pressurization allows gas to be transported over longer distances, improving equipment performance.

[0070] Furthermore, the centrifugal section enables the first reversal of gas flow, that is, the gas flow direction from the air intake side of the impeller assembly 100 to the central region of the impeller assembly 100 gradually changes to the tangential output of the edge of the impeller assembly 100. This reduces the direct impact of airflow on the duct wall, lowers noise, and prepares for the subsequent reversal of airflow by the oblique flow section.

[0071] The tangential direction of the edge of the wind turbine assembly 100 can be understood as the tangential direction of the circumferential edge of the wind turbine assembly 100. The circumferential edge of the wind turbine assembly 100 can be formed as a circle or close to a circle, so the rotation of the wind turbine assembly 100 can drive the gas to be output along the tangential direction of the edge of the wind turbine assembly 100.

[0072] The second blade section 12 includes a diagonal flow section and a centrifugal section that accelerates and pressurizes the gas to form an airflow. The diagonal flow section can redirect at least a portion of the airflow a second time. That is, it guides the flow direction of at least a portion of the gas to be along or approximately along the axial direction of the second blade section 12, reducing the direct impact between the airflow from the second blade section 12 and the duct wall, improving the stability and efficiency of the airflow, and reducing noise.

[0073] During the process of redirecting the airflow, the oblique flow section can further increase the gas pressure, and the impeller assembly 100 can be used in applications with high gas pressure requirements. For example, when applied to ventilation systems with long air ducts, the impeller assembly 100 can overcome the resistance of long air ducts and meet the conveying requirements by pressurizing the gas twice (the centrifugal section pressurizes the gas for the first time, and the oblique flow section pressurizes the gas for the second time).

[0074] Furthermore, the rotation of the impeller assembly 100 drives the diagonal flow section to rotate. The diagonal flow section can make the gas distribution within the air duct (at the same cross-sectional position) more uniform, reducing situations where the local flow velocity is too low or too high, thus improving the performance of the equipment. For example, when applied to air purification equipment, the diagonal flow section makes the airflow evenly distributed within the air duct, which helps to ensure that the airflow makes full contact with the filter screen, thereby improving the purification effect.

[0075] Furthermore, as the impeller assembly 100 rotates, the centrifugal section and the diagonal flow section work together. The centrifugal section provides the gas with a force perpendicular or nearly perpendicular to the rotation axis, while the diagonal flow section provides the gas with a force at a certain angle to the rotation axis (e.g., neither parallel nor perpendicular to the rotation axis). The synchronized rotation of the centrifugal and diagonal flow sections creates uniform airflow, reduces localized high pressure and air backflow, improves efficiency, increases the delivered air volume, and reduces noise. When the device is an air purifier, it can increase the clean air delivery rate (CADR).

[0076] Additionally, it should be noted that while centrifugal impellers (with centrifugal blades) can provide high-pressure airflow, they suffer from significant energy loss, and high-speed centrifugation can easily lead to turbulent noise. Although diagonal-flow impellers have high flow efficiency, their airflow is limited under high-pressure conditions, making it difficult to meet long-distance air delivery requirements. The impeller assembly 100 in this embodiment includes blades 10 with centrifugal and diagonal flow sections. This allows for the formation of high-pressure airflow as gas flows from the central region to the edge region of the impeller assembly 100, and also enables the airflow to flow along the axis of the impeller assembly 100, reducing energy loss, lowering turbulent noise, and achieving long-distance air delivery.

[0077] In one possible implementation, the first blade section 11 can be a centrifugal section, and the second blade section 12 can be a diagonal flow section.

[0078] In one possible implementation, the centrifugal section and the diagonal flow section can be an integrated structure, enabling the centrifugal section and the diagonal flow section to rotate synchronously.

[0079] The centrifugal section and the diagonal flow section can be manufactured as a single piece.

[0080] The centrifugal section and the diagonal flow section can be manufactured independently and then fixedly connected (e.g., by snap-fit, bolt connection, etc.) to form a whole. This facilitates assembly, maintenance, and component replacement, improves the versatility and maintainability of the wind turbine assembly 100, reduces maintenance costs, and makes it easier to make local improvements and optimizations to the wind turbine assembly 100.

[0081] In one possible implementation, the centrifugal section and the diagonal flow section can be separate structures, allowing the centrifugal section and the diagonal flow section to rotate asynchronously.

[0082] In some embodiments, combined with Figure 1 , Figure 2 and Figure 4 As shown, the second blade portion 12 includes at least a portion of the trailing edge 16 of the blade 10. The second blade portion 12 is inclined relative to the first blade portion 11 toward the axis of the wind turbine assembly 100.

[0083] The second blade portion 12 includes at least a portion of the trailing edge 16 of the blade 10, and the second blade portion 12 is inclined relative to the first blade portion 11 towards the axis of the wind turbine assembly 100. This adjusts the airflow direction, guiding the airflow axially towards the wind turbine assembly 100, reducing airflow impact on the duct wall, reducing energy loss, and lowering noise. In other words, the function of the second blade portion 12 of the blade 10 is roughly the same as that of the oblique flow blade: reducing airflow impact on the duct wall, allowing the airflow to be output along the curve of the duct 201, reducing energy loss, and lowering noise.

[0084] The second blade section 12 includes at least a portion of the trailing edge 16 of the blade 10. That is, for at least a portion of the airflow, the airflow is first pressurized and accelerated by the first blade section 11, and then turned by the second blade section 12, so that the airflow is transported more smoothly, thereby making the wind turbine assembly 100 run more smoothly, and reducing the direct impact of the gas flowing out of the airflow channel 19 on the wind duct wall, thereby reducing energy loss and noise.

[0085] In some embodiments, combined with Figure 1 , Figure 2 and Figure 4 As shown, the wind turbine assembly 100 also includes a torsion curve. The torsion curve is formed at the junction of the first blade portion 11 and the second blade portion 12 and is located on the windward side 18 of the blade 10. Along the direction from the tail portion 15 to the tip 14 of the blade 10, the distance between the torsion curve and the trailing edge 16 of the blade 10 gradually increases.

[0086] Combination Figure 1 , Figure 2 and Figure 4 As shown, L2 indicates the torsion curve, D1 indicates the bottom of the torsion curve, and D2 indicates the top of the torsion curve. The torsion curve is formed at the connection between the first blade portion 11 and the second blade portion 12 and is located on the windward surface 18 of the blade 10. That is, the second blade portion 12 tilts towards the axis of the wind turbine assembly 100 from the torsion curve, thereby adjusting the flow direction of at least a portion of the airflow after it has been pressurized and accelerated by the first blade portion 11. In the description of this utility model, the windward surface 18 refers to the surface of the wind turbine assembly 100 that is in direct contact with the airflow during operation. For example, it can be the convex surface of the curved blade 10, which will not be described in detail below.

[0087] Combination Figure 1 and Figure 4 As shown, along the direction from the tail 15 to the top 14 of the blade 10, the distance between the torsion curve and the trailing edge 16 of the blade 10 gradually increases, effectively improving the working efficiency of the first blade section 11 and the second blade section 12, thereby improving the pressure holding effect of the first blade section 11 on the gas and the directional effect of the second blade section 12 on the gas.

[0088] Specifically, the tail 15 of blade 10 is closer to the air inlet side of the rotor assembly 100. Compared to the tail 15 of blade 10, the top 14 of blade 10 is closer to the air outlet side of the rotor assembly 100. Along the direction from the tail 15 to the top 14 of blade 10, the distance between the twist curve and the trailing edge 16 of blade 10 gradually increases. That is, the closer to the air outlet side of the rotor assembly 100, the larger the contact area between the airflow and the second blade 12, and the better the effect of adjusting the airflow direction. In contrast, on the air inlet side of the rotor assembly 100, the contact area between the airflow and the first blade 11 is relatively large, improving the pressurization effect, thereby effectively improving the working efficiency of the first blade 11 and the second blade 12, and optimizing the wind guiding performance of blade 10.

[0089] In some embodiments, combined with Figure 5 and Figure 6 As shown, the end of the torsion curve near the top 14 of the blade 10 forms the apex of the torsion curve (D2). On the radial section of the wind turbine assembly 100 passing through the apex of the torsion curve, the intersection of the trailing edge 16 of the blade 10 and the windward surface 18 of the blade 10 forms an intersection point. The line connecting this intersection point and the apex of the torsion curve forms an angle θ with the tangent of the blade 10 at the apex of the torsion curve, where 0° < θ ≤ 45°.

[0090] The end of the twist curve near the top 14 of the blade 10 is formed as the apex (D2) of the twist curve. That is, compared to the bottom (D1) of the twist curve, the apex (D2) of the twist curve is closer to the top 14 of the blade 10, or the apex (D2) of the twist curve extends to the top 14 of the blade 10. During the airflow from the second blade portion 12 to the outlet of the impeller assembly 100, the second blade portion 12 can continuously and effectively adjust the flow direction of the airflow, improving the airflow steering effect. In the description of this embodiment of the present invention, the top 14 of the blade 10 refers to the position of the blade 10 away from the air intake side of the impeller assembly 100, which can be connected to the hub 20. The tail 15 of the blade 10 refers to the side away from the top 14, close to the air intake side of the impeller assembly 100. The air intake side of the impeller assembly 100 refers to the side of the impeller assembly 100 that receives the air inflow. The air intake side of the impeller assembly 100 is close to the tail 15 of the blade 10 and close to the central region of the impeller assembly 100. The outlet side of the wind turbine assembly 100 refers to the side from which gas flows out of the wind turbine assembly 100, and the outlet side of the wind turbine assembly 100 is located near the edge area of ​​the wind turbine assembly 100. This will not be elaborated further below.

[0091] The wind turbine assembly 100 is radially cut to obtain a radial section of the wind turbine assembly 100, and this radial section passes through the top of the torsion curve (D2). The radial section of the wind turbine assembly 100 is approximately perpendicular to the axis of the wind turbine assembly 100.

[0092] Combination Figures 4 to 6 As shown, Figure 6 A radial section used to illustrate the top of the torsional curve of the wind turbine assembly 100. Figure 6 In the diagram, D3 is used to indicate the intersection point formed by the intersection of the trailing edge 16 of the blade 10 and the windward surface 18 of the blade 10, L3 is used to indicate the line connecting the intersection point to the top of the twist curve, and L4 is used to indicate the tangent of the blade 10 at the top of the twist curve.

[0093] Specifically, on the radial section of the wind turbine assembly 100 passing through the apex of the torsion curve, connect D2 and D3 to obtain the line L3 connecting the intersection point formed by the intersection of the trailing edge 16 and the windward surface 18 of the blade 10 and the apex of the torsion curve. Draw a tangent line to the blade 10 through the apex of the torsion curve (D2) to obtain the tangent line L4 of the blade 10 at the apex of the torsion curve.

[0094] By forming a torsion curve at the junction of the first blade portion 11 and the second blade portion 12 and located on the windward side 18 of the blade 10, and with 0° < θ ≤ 45°, the second blade portion 12 is tilted relative to the first blade portion 11 toward the axis of the wind turbine assembly 100, thereby adjusting the flow direction of the airflow, reducing the direct impact of the airflow on the duct wall, and thus reducing energy loss and noise.

[0095] In some embodiments, the ratio of the area of ​​the second blade portion 12 to the area of ​​the blade 10 is greater than 0% and less than 100%.

[0096] By ensuring that the ratio of the area of ​​the second blade portion 12 to the area of ​​the blade 10 is greater than 0% and less than 100%, the areas of the first blade portion 11 and the second blade portion 12 are reasonably matched. This allows the blade 10 to not only meet the pressure-holding requirements to drive gas flow and form airflow, but also to adjust the direction of airflow to guide at least a portion of the airflow axially toward the wind turbine assembly 100, thereby reducing the collision of airflow with the duct wall, reducing energy loss, and lowering noise.

[0097] In one possible implementation, the ratio of the area of ​​the second blade portion 12 to the area of ​​the blade 10 is 15%.

[0098] In this embodiment, compared with the second blade portion 12, the first blade portion 11 has a larger proportion on the blade 10, which can improve the pressurization and acceleration effect of the airflow and is suitable for operating conditions with high system resistance.

[0099] In one possible implementation, the area of ​​the second blade portion 12 is 1 / 3 the area of ​​the blade 10.

[0100] In one possible implementation, the ratio of the area of ​​the second blade portion 12 to the area of ​​the blade 10 is 1 / 2.

[0101] In one possible implementation, the ratio of the area of ​​the second blade portion 12 to the area of ​​the blade 10 is 52%.

[0102] In this embodiment, compared with the first blade portion 11, the second blade portion 12 has a larger proportion on the blade 10, which can improve the effect of guiding the airflow direction and is suitable for operating conditions with relatively low system resistance and high noise requirements.

[0103] In some embodiments, combined with Figure 1 and Figure 2 As shown, the blade 10 also includes a rectification region 13. The rectification region 13 is located on the side of the second blade portion 12 opposite to the tail portion 15 of the blade 10. The area of ​​the rectification region 13 is 5% to 15% of the area of ​​the blade 10.

[0104] The rectifier section 13 is located on the side of the second blade section 12 away from the tail 15 of the blade 10, and is used to rectify the airflow flowing out of the second blade section 12 to further reduce noise and abnormal sounds.

[0105] In this embodiment, it is considered that when the airflow turns from the first blade section 11 to the second blade section 12, small vortices (wind holes) may be generated. This embodiment makes the gas flow smoother and more stable through the rectifier section 13, effectively reducing the generation of small vortices (wind holes) and reducing noise and abnormal sounds.

[0106] By using a rectifier zone 13 with an area of ​​5% to 15% of the blade area 10, the first blade section 11 pressurizes and accelerates the airflow, while the second blade section 12 steers and rectifies the airflow. Through the coordination of the first blade section 11, the second blade section 12, and the rectifier zone 13, the smoothness of the airflow delivered by the blade 10 is improved, and noise is reduced.

[0107] In one possible implementation, the area of ​​the rectifier region 13 is 5% of the area of ​​the blade 10.

[0108] In one possible implementation, the area of ​​the rectifier region 13 is 10% of the area of ​​the blade 10.

[0109] In one possible implementation, the area of ​​the rectifier region 13 is 15% of the area of ​​the blade 10.

[0110] In one possible implementation, combining Figure 2 As described above, along the direction from the trailing edge 16 to the leading edge 17 of the blade 10, the rectification region 13 extends to the side of the first blade portion 11 opposite to the tail portion 15 of the blade 10, thereby improving the rectification effect.

[0111] In some embodiments, combined with Figure 1 and Figure 2As shown, the rectifying region 13 is an arc-shaped plate structure that convexes outward relative to the axis of the wind turbine assembly 100. The rectifying region 13 extends along the axial direction of the wind turbine assembly 100 from the tail 15 to the top 14 of the blade 10.

[0112] The rectification region 13 is an arc-shaped plate structure that bulges outward relative to the axis of the wind turbine assembly 100. In other words, the rectification region 13 is an arc-shaped plate structure as a whole, and relative to the axis of the wind turbine assembly 100, the rectification region 13 bulges outward toward the side away from the axis of the wind turbine assembly 100 to facilitate rectification.

[0113] Along the direction from the tail 15 to the top 14 of the blade 10, the rectifier zone 13 extends along the axial direction of the wind turbine assembly 100. That is, in the direction from the tail 15 to the top 14 of the blade 10, the direction of the rectifier zone 13 is parallel or nearly parallel to the axis of the wind turbine assembly 100, making the airflow smoother, reducing the generation of small vortices (wind holes), and thus reducing noise and abnormal sounds.

[0114] By using the rectifier region 13 as an arc-shaped plate structure that protrudes outward relative to the axis of the wind turbine assembly 100, and combining the fact that the extension direction of the rectifier region 13 is parallel or nearly parallel to the axis of the wind turbine assembly 100, the generation of small vortices (wind holes) can be effectively reduced, noise and abnormal sounds can be reduced, the operational stability of the wind turbine assembly 100 can be improved, and maintenance costs can be reduced.

[0115] In some embodiments, combined with Figure 1 and Figure 2 As shown, along the direction from the leading edge 17 to the trailing edge 16 of the blade 10, the distance between the side of the rectifier region 13 away from the tail 15 and the second blade portion 12 gradually increases.

[0116] Along the direction from the leading edge 17 to the trailing edge 16 of the blade 10, the distance between the rectifier section 13 away from the tail 15 and the second blade section 12 gradually increases. That is, as the airflow flows towards the outlet side of the wind turbine assembly 100, the contact area between the rectifier section 13 and the airflow gradually increases, thereby improving the stability of the transported airflow.

[0117] In some embodiments, combined with Figure 2 and Figure 9 As shown, the leading edge 17 of the blade 10 has an outwardly convex arc-shaped structure. Along the direction from the tail 15 to the top 14 of the blade 10, the leading edge 17 of the blade 10 gradually approaches the axis of the wind turbine assembly 100.

[0118] The leading edge 17 of the blade 10 has an outwardly convex arc-shaped structure, that is, the leading edge 17 of the blade 10 has an arc-shaped structure and protrudes towards the axis of the wind turbine assembly 100, reducing resistance to airflow. Along the direction from the tail 15 to the top 14 of the blade 10, the leading edge 17 of the blade 10 gradually approaches the axis of the wind turbine assembly 100, so that the gas entering the wind turbine assembly 100 can flow more evenly to various areas of the leading edge 17 of the blade 10, reducing the situation of excessively high or low local negative pressure in the central area of ​​the wind turbine assembly 100, making the pressure difference in the wind turbine assembly 100 more uniform, and improving the gas utilization rate.

[0119] When applied to the air handling unit 200, the leading edge 17 of the blade 10 has an outwardly convex arc-shaped structure. Along the direction from the tail 15 to the top 14 of the blade 10, the leading edge 17 gradually approaches the axis of the impeller assembly 100. This allows the negative pressure generated by the rotation of the impeller assembly 100 to extract the gas passing through the filter of the air handling unit 200 as much as possible, improving efficiency. It also reduces the formation of excessively high or low local negative pressure in the central area of ​​the impeller assembly 100, making the pressure difference in the impeller assembly 100 more uniform and the wind speed more uniform, thereby improving airflow delivery efficiency.

[0120] In some embodiments, combined with Figure 2 and Figure 3 As shown, the thickness of the leading edge 17 of the blade 10 is less than the thickness of other regions of the blade 10. The thickness of the leading edge 17 of the blade 10 gradually decreases along the direction from the tail 15 to the top 14 of the blade 10.

[0121] By making the thickness of the leading edge 17 of the blade 10 smaller than the thickness of other areas of the blade 10, the flow resistance of the airflow is reduced, as well as flow losses and noise. Because the leading edge 17 of the blade 10 reduces the resistance to the airflow, the airflow flows more closely to the surface of the blade 10, improving gas delivery efficiency.

[0122] Combination Figure 2 and Figure 3 As shown, a1 indicates the thickness of the leading edge 17 of the blade 10 near the tail 15, and a2 indicates the thickness of the leading edge 17 of the blade 10 near the top 14. a1 is greater than a2. Furthermore, along the direction from the tail 15 to the top 14 of the blade 10, the thickness of the leading edge 17 of the blade 10 gradually decreases, effectively dividing the air, optimizing the velocity distribution, and making the airflow smoother.

[0123] In some embodiments, combined with Figure 2 As shown, the tangent of the leading edge 17 of the blade 10 near the top 14 of the blade 10 extends along the axial direction of the wind turbine assembly 100. The tangent of the leading edge 17 of the blade 10 near the tail 15 of the blade 10 is perpendicular to the axial direction of the wind turbine assembly 100.

[0124] like Figure 2 As shown, L5 is used to indicate the tangent at the leading edge 17 of the blade 10 near the top 14 of the blade 10, and L6 is used to indicate the tangent at the leading edge 17 of the blade 10 near the tail 15 of the blade 10.

[0125] The tangent line at the leading edge 17 of blade 10 near the top 14 of blade 10 is a tangent line drawn through the end point of the leading edge 17 of blade 10 near the top 14 of blade 10, which is tangent to the leading edge 17 of blade 10. The tangent line (L5) at the leading edge 17 of blade 10 near the top 14 of blade 10 extends along the axial direction of the wind turbine assembly 100, that is, the tangent line (L5) at the leading edge 17 of blade 10 near the top 14 of blade 10 is parallel to or tends to be parallel to the axis (L1) of wind turbine assembly 100.

[0126] The tangent line to the leading edge 17 of blade 10 near the tail 15 of blade 10 is drawn through the endpoint of the leading edge 17 of blade 10 near the tail 15 of blade 10, and is tangent to the leading edge 17 of blade 10. The tangent line (L6) to the leading edge 17 of blade 10 near the tail 15 of blade 10 is perpendicular to the axis of wind turbine assembly 100. This can be understood as the tangent line (L6) to the leading edge 17 of blade 10 near the tail 15 of blade 10 being perpendicular to or nearly perpendicular to the axis (L1) of wind turbine assembly 100.

[0127] The tangent of the leading edge 17 of the blade 10 near the top 14 of the blade 10 extends along the axial direction of the wind turbine assembly 100. The tangent of the leading edge 17 of the blade 10 near the tail 15 of the blade 10 is perpendicular to the axial direction of the wind turbine assembly 100. The outward convex arc structure of the leading edge 17 of the blade 10, combined with the tangent of the leading edge 17 of the blade 10, makes the airflow along the leading edge 17 of the blade 10 smoother and reduces flow noise.

[0128] In some embodiments, combined with Figure 2 As shown, the maximum distance between the trailing edge 16 of blade 10 and the axis of the wind turbine assembly 100 is R; the distance between the leading edge 17 of blade 10 near the top 14 of blade 10 and the axis of the wind turbine assembly 100 is R1; and the distance between the leading edge 17 of blade 10 near the tail 15 of blade 10 and the axis of the wind turbine assembly 100 is R2. Wherein, 0.45R ≤ R1 ≤ 0.45R, and 0.7R ≤ R2 ≤ 0.8R.

[0129] Based on the outwardly convex arc structure of the leading edge 17 of the blade 10, the tangent of the leading edge 17 of the blade 10 near the top 14 of the blade 10 extends along the axial direction of the wind turbine assembly 100, and the tangent of the leading edge 17 of the blade 10 near the tail 15 of the blade 10 is perpendicular to the axial direction of the wind turbine assembly 100. Combined with 0.45R≤R1≤0.45R and 0.7R≤R2≤0.8R, the structure of the leading edge 17 of the blade 10 is optimized, effectively reducing gas flow resistance, reducing flow noise, and improving conveying efficiency.

[0130] In some embodiments, combined with Figure 1 , Figure 2 and Figure 4 As shown, the wind turbine assembly 100 also includes a hub 20. The hub 20 is connected to the top 14 of the blade 10. The hub 20 extends from the trailing edge 16 of the blade 10, wherein the second blade portion 12 is located outside the hub 20.

[0131] The connection between the hub 20 and the top 14 of the blades 10 helps improve the operational stability of the wind turbine assembly 100. When the motor 202 drives the hub 20 to rotate, the hub 20 drives multiple blades 10 to rotate synchronously, achieving stable gas delivery.

[0132] The hub 20 extends from the trailing edge 16 of the blade 10, and the second blade portion 12 is located outside the hub 20. This can increase the air outlet area and make the airflow that is turned by the second blade portion 12 flow more smoothly to the air outlet side of the wind turbine assembly 100, thereby improving the air delivery efficiency.

[0133] In one possible implementation, combining Figure 1 , Figure 2 and Figure 4 As shown, the wind turbine assembly 100 also includes an annular guide vane 30. The annular guide vane 30 is connected to the tail 15 of the plurality of blades 10 and is located near the trailing edge 16 of the blades 10. The annular guide vane 30 extends radially outward along the wind turbine assembly 100.

[0134] The annular guide vane 30 is connected to the tail 15 of multiple blades 10. The annular guide vane 30 is close to the trailing edge 16 of the blades 10 and adjusts the flow direction of the gas entering the wind turbine assembly 100. Specifically, when the wind turbine assembly 100 rotates, gas is drawn into the wind turbine assembly 100, and the airflow flows along the airflow channel 19 between adjacent blades 10. The annular guide vane 30 helps to guide the flow direction of the gas towards the outlet side of the wind turbine assembly 100.

[0135] The annular guide vane 30 extends radially outward along the wind turbine assembly 100, that is, along the radial direction of the wind turbine assembly 100, the annular guide vane 30 extends away from the axis of the wind turbine assembly 100 to guide the gas towards the outlet side of the wind turbine assembly 100, thereby improving air supply efficiency and reducing gas backflow. The radial direction of the wind turbine assembly 100 refers to the direction from the central region of the wind turbine assembly 100 to the edge region of the wind turbine assembly 100 within the plane of rotation of the wind turbine assembly 100.

[0136] In one possible implementation, combining Figure 1 , Figure 2 and Figure 4 As shown, the wind turbine assembly 100 also includes an impeller cover 40. The impeller cover 40 is connected to one end of the annular guide vane 30 away from the tail 15 of the blade 10.

[0137] By connecting the impeller cover 40 to the end of the annular guide plate 30 away from the tail 15 of the blade 10, some of the gas entering the wind turbine assembly 100 through the impeller cover 40 can flow smoothly to the annular guide plate 30, thus achieving stable gas delivery.

[0138] Combination Figures 1 to 9 As shown, according to a second aspect of the present invention, an air handling device 200 is provided, including an air duct 201 and a fan assembly 100 as described in any of the preceding embodiments. The fan assembly 100 is disposed in the air duct 201.

[0139] The wind turbine assembly 100 is disposed in the air duct 201. Specifically, the air intake side of the wind turbine assembly 100 can be connected to the air inlet of the air duct 201 so that when the wind turbine assembly 100 rotates, external gas is drawn into the air intake side of the wind turbine assembly 100 through the air inlet of the air duct 201.

[0140] In practical applications, the wind turbine assembly 100 rotates, accelerating, pressurizing, and directionally adjusting the gas before delivering it into the air duct 201, thus achieving gas flow within the air handling equipment 200. The technical effects of the wind turbine assembly 100 can be found in the above-described embodiments of this utility model, and will not be repeated here.

[0141] The air handling unit 200 can be any one of an air purifier, humidifier, dehumidifier, air supply equipment, ventilation system, or bladeless air purification fan. The impeller assembly 100 can be a component used to drive airflow in equipment such as air purifiers, humidifiers, dehumidifiers, air supply equipment, ventilation systems, or bladeless air purification fans.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A wind turbine assembly, characterized in that, include: The blade includes a first blade portion and a second blade portion, and a plurality of the blades are arranged at intervals along the circumference of the wind turbine assembly to form an airflow channel. The first blade portion and the second blade portion are arranged adjacent to each other or at intervals. The first blade portion is used to drive the gas flow to form an airflow, and the second blade portion is used to guide at least a portion of the airflow formed by the first blade portion toward the axial direction of the wind turbine assembly.

2. The wind turbine assembly according to claim 1, characterized in that, At least one of the blades includes two regions forming an angle, wherein the portion of the two regions closer to the tip of the blade is used to guide airflow toward the axial direction of the wind turbine assembly; The two regions forming the included angle include the first blade portion and the second blade portion.

3. The wind turbine assembly according to claim 1 or 2, characterized in that, The first blade portion is closer to the tail of the blade than the second blade portion, and the second blade portion is closer to the tip of the blade than the first blade portion; Wherein, the second blade portion is twisted relative to the first blade portion, or... Along the direction from the tail to the tip of the blade, the second blade portion is inclined towards the axis of the wind turbine assembly relative to the first blade portion, or... The tilt angle of the second blade portion is greater than that of the first blade portion, or, The angle between the tangent at the trailing edge of the blade and the axis of the wind turbine assembly is γ1, and the angle between the tangent at the tip of the trailing edge of the blade and the axis of the wind turbine assembly is γ2, wherein γ1 is less than γ2.

4. The wind turbine assembly according to claim 1, characterized in that, The first blade section includes a centrifugal section, which is at least used to drive gas from the central region of the wind turbine assembly to the edge region of the wind turbine assembly; The second blade section includes an oblique flow section, which is at least used to guide the flow direction of the gas toward the axial direction of the wind turbine assembly.

5. The wind turbine assembly according to claim 1, characterized in that, The second blade portion includes at least a portion of the trailing edge of the blade; The second blade portion is inclined relative to the first blade portion toward the axis of the wind turbine assembly.

6. The wind turbine assembly according to claim 1, characterized in that, The blade also includes: The twist curve is formed at the junction of the first blade portion and the second blade portion and is located on the windward side of the blade; Along the direction from the tail to the tip of the blade, the distance between the torsion curve and the trailing edge of the blade gradually increases.

7. The wind turbine assembly according to claim 6, characterized in that, The end of the torsion curve near the top of the blade forms the apex of the torsion curve; On the radial section of the wind turbine assembly passing through the top tip, the intersection of the trailing edge of the blade and the windward side of the blade forms an intersection point. The line connecting this intersection point and the top tip forms an angle θ with the tangent to the blade at the top tip. 0° < θ ≤ 45°.

8. The wind turbine assembly according to claim 1, characterized in that, The ratio of the area of ​​the second blade portion to the area of ​​the blade is greater than 0% and less than 100%.

9. The wind turbine assembly according to claim 1, characterized in that, The blade also includes: The rectifier region is located on the side of the second blade portion away from the tail of the blade; The area of ​​the rectifier region is 5% to 15% of the area of ​​the blade.

10. The wind turbine assembly according to claim 9, characterized in that, The rectification area is an arc-shaped plate structure that bulges outward relative to the axis of the wind turbine assembly; The rectifier region extends along the axial direction of the wind turbine assembly.

11. The wind turbine assembly according to claim 9, characterized in that, Along the direction from the leading edge to the trailing edge of the blade, the distance between the side of the rectifying region away from the tail of the blade and the second blade portion gradually increases.

12. The wind turbine assembly according to claim 1, characterized in that, The leading edge of the blade includes a convex arc-shaped structure; Along the direction from the tail to the top of the blade, the leading edge of the blade gradually approaches the axis of the wind turbine assembly.

13. The wind turbine assembly according to claim 1, characterized in that, The thickness of the leading edge of the blade is less than the thickness of other areas of the blade; Along the direction from the tail to the tip of the blade, the thickness of the leading edge of the blade gradually decreases.

14. The wind turbine assembly according to claim 1, characterized in that, The tangent at the leading edge of the blade near the tip of the blade extends along the axial direction of the wind turbine assembly; The tangent at the leading edge of the blade near the tail end is perpendicular to the axis of the wind turbine assembly.

15. The wind turbine assembly according to claim 1, characterized in that, The maximum distance between the trailing edge of the blade and the axis of the wind turbine assembly is R; the distance between the leading edge of the blade near the top of the blade and the axis of the wind turbine assembly is R1; and the distance between the leading edge of the blade near the tail of the blade and the axis of the wind turbine assembly is R2. Wherein, 0.45R≤R1≤0.45R, 0.7R≤R2≤0.8R.

16. The wind turbine assembly according to claim 1, characterized in that, Also includes: The hub is connected to the top of the blade; The trailing edge of the blade extends out of the hub, wherein at least a portion of the second blade portion is located outside the hub.

17. An air handling device, characterized in that, include: Air duct; The wind turbine assembly as described in any one of claims 1 to 16 is disposed in the wind duct.

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