A flow guide assembly and a fan

Abstract

The utility model provides a kind of flow guide assembly and fan, a kind of flow guide assembly includes current collector and multiple shunt vanes;Current collector has air inlet end and air outlet end, and air outlet end is connected with air duct;Multiple shunt vanes are spaced apart on the inner wall of current collector, the leading edge of shunt vane extends to air inlet end, the trailing edge of shunt vane extends to air outlet end, with air inlet end as projection plane, and shunt vane is arc-shaped.In the utility model, arc-shaped blade can guide airflow more smoothly, when air enters current collector, arc-shaped blade can guide airflow along its curved surface, reduce airflow separation, and further reduce wind resistance in air duct.

Description

Technical Field

[0001] This utility model belongs to the technical field of air supply devices, specifically relating to a flow guiding component and a fan. Background Technology

[0002] The fan industry has developed rapidly, with axial flow fans currently holding a large market share, particularly in livestock farming. These fans are installed in various farms for ventilation. Livestock fans typically discharge air axially, and axial flow fans achieve this axial ventilation effect with high efficiency. The duct, a crucial component of the axial flow fan, supports the motor and encloses the fan blades, creating static pressure during operation to increase air delivery distance and velocity. Air initially flows into a collector connected to the duct. Existing traditional duct structures exhibit high internal air resistance and significant turbulence during intake, resulting in shorter air delivery distances. Utility Model Content

[0003] This utility model provides a flow guiding component and a fan, which can solve the technical problems of large internal wind resistance and large turbulence during air intake in traditional wind duct structures, resulting in short air delivery distance.

[0004] This utility model provides a flow guiding component, which includes: a flow collector and multiple flow splitting blades; The collector has an air inlet and an air outlet, and the air outlet is connected to the air duct. Multiple diverting blades are spaced apart on the inner wall of the collector. The leading edge of each diverting blade extends toward the air inlet, and the trailing edge extends toward the air outlet. The diverting blades are arc-shaped with the cross-section of the collector as the projection plane.

[0005] In some embodiments, the longitudinal section of the diverter blade is used as the projection plane, the diverter blade is arc-shaped, and the trailing edge of the diverter blade is bent clockwise relative to the leading edge of the diverter blade.

[0006] In some embodiments, with the air outlet end as the projection plane, in the length direction of the splitter blade, the connection between the trailing edge of the splitter blade and the air outlet end has a tangent, and the connection between the trailing edge of the splitter blade and the air outlet end has a radially outward normal. The tangent and the normal have an included angle α, which satisfies: 30° < α < 45°.

[0007] In some embodiments, the air duct is provided with fan blades. Taking the longitudinal section of the air duct as the projection plane, the diameter between the two ends of the air duct is d, the length of the collector in the air inlet direction is L1, and the vertical length between the leading edge and the trailing edge of the splitter blade is L2. The length L1 satisfies: L1=0.3~0.4d, and the straight length L2 satisfies: L2=L1*cosa.

[0008] In some embodiments, the maximum curvature of the splitter blade is A, and the maximum curvature A satisfies: A=0.4L2; there is a vertical line connecting the leading edge and the trailing edge of the splitter blade, the height between the maximum curvature A and the vertical line is dh, and the curvature of the splitter blade is w, and the curvature satisfies: w=dh / L2.

[0009] In some embodiments, the collector is trumpet-shaped, and the cross-sectional area of ​​the air inlet is larger than the cross-sectional area of ​​the air outlet; the cross-sectional area of ​​the air outlet is larger than the cross-sectional area of ​​the air duct, and the air duct and the air outlet are connected by a transition ring.

[0010] In some embodiments, the longitudinal section of the air duct is used as the projection plane, the diameter of the air duct is D, the outer wall of the transition ring is arc-shaped, the radius of the arc of the transition ring is R, and the radius of the arc R satisfies: R=D*0.3.

[0011] In some embodiments, the thickness of a single diverter blade is 4-8 mm, and the number of diverter blades is 2n, where n is the number of blades of the wind turbine.

[0012] A fan includes a motor, a fan duct, and a flow guiding assembly. The flow guiding assembly is the aforementioned flow guiding assembly. The fan duct includes a first cylinder and a second cylinder that are detachably connected. The first cylinder is disposed above the second cylinder. The inner wall of the second cylinder is provided with a detachably connected bracket. The motor is mounted on the bracket.

[0013] In some embodiments, the support includes a horizontal arm and a vertical arm, the length of the horizontal arm extending in the axial direction of the air duct, one end of the vertical arm being connected to the horizontal arm, and the other end of the vertical arm extending toward the bottom of the second cylinder.

[0014] The flow guiding component and fan provided by this utility model have the following beneficial effects: In this invention, the curved blades guide airflow more smoothly. When air enters the collector, the curved blades guide the airflow along their curved surface, reducing sudden changes in airflow direction and impact. This smooth guidance effectively reduces airflow turbulence and energy loss. The curved blades also help reduce airflow separation, which occurs when airflow encounters an obstacle and some of it detaches from the object's surface to form vortices. The curved blades better conform to the natural flow path of the airflow, reducing separation and thus lowering energy loss and noise. Furthermore, the curved blades evenly divide the airflow entering the collector into multiple streams. This even division helps ensure a more uniform distribution of airflow as it enters the duct, preventing localized overly strong or weak airflow. This uniform airflow distribution improves the overall performance of the fan, allowing the blades to operate more efficiently. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the flow guiding component according to an embodiment of the present utility model; Figure 2 This is a side view of the flow guiding component according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the air inlet projection surface of an embodiment of the present invention; Figure 4 This is a schematic diagram of the flow divider blade according to an embodiment of the present utility model; Figure 5 A schematic diagram of a motor installed in a ventilation duct; Figure 6 This is a schematic diagram showing the included angle α when the splitter blades are projected onto the collector according to an embodiment of the present invention.

[0017] Attached Figures: 1-Collector; 11-Inlet; 12-Outlet; 2-Diverter Blade; 3-Air Duct; 301-First Duct; 302-Second Duct; 4-Fan Blade; 5-Transition Ring; 6-Motor; 7-Support; 701-Horizontal Support Arm; 702-Vertical Support Arm. Detailed Implementation

[0018] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0020] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used here to describe the spatial positional relationship of a device or feature as shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device as described in the figure. For example, if a device in the figure is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures.

[0021] See also Figures 1 to 5 As shown, according to an embodiment of the present invention, a flow guiding component is provided, which includes a collector 1 and a plurality of flow divider blades 2; the collector 1 has an air inlet end 11 and an air outlet end 12, the air outlet end 12 being connected to the air duct 3 by screws; the plurality of flow divider blades 2 are spaced apart on the inner wall of the collector 1, the leading edge of the flow divider blades 2 extending toward the air inlet end 11, the trailing edge of the flow divider blades 2 extending toward the air outlet end 12, and the flow divider blades 2 are arc-shaped with the cross-section of the collector 1 as the projection plane.

[0022] Specifically, outside air first enters through the inlet 11 of the collector 1. The air entering the collector 1 comes into contact with multiple spaced-apart diverter blades 2. The leading edge of these diverter blades 2 extends towards the inlet 11, and the trailing edge extends towards the outlet 12, forming an arc shape. This arrangement guides and divides the air into multiple streams along the arc-shaped surface of the diverter blades 2 after entering the collector 1. The airflow guided by the diverter blades 2 flows smoothly along the inner wall of the collector 1 towards the outlet 12. Due to the arc-shaped and spaced arrangement of the diverter blades 2, the air is effectively and evenly distributed to all parts of the collector 1. When the airflow reaches the outlet 12 of the collector 1, it flows into the connected duct 3. At this point, the airflow has been preliminarily conditioned by the diverter blades 2, reducing turbulence and wind resistance, allowing it to enter the duct 3 more smoothly. The airflow entering the ventilation duct 3 is accelerated and propelled forward by the fan blades 4. Due to the structure of the ventilation duct 3 and the rotation of the fan blades 4, a certain static pressure is formed inside the ventilation duct 3. This static pressure helps to increase the air delivery distance and air outlet speed, enabling the fan to more effectively deliver air to farther places and meet the ventilation needs of places such as farms.

[0023] In this embodiment, the curved blades can guide airflow more smoothly. When air enters the collector 1, the curved blades can guide the airflow along its curved surface, reducing sudden changes in airflow direction and impact. This smooth guidance method can effectively reduce airflow turbulence and energy loss. The curved blades also help reduce airflow separation. Airflow separation refers to the phenomenon where, when airflow encounters an obstacle, some airflow detaches from the object's surface to form vortices. The curved blades can better conform to the natural flow path of the airflow, reducing airflow separation and thus reducing energy loss and noise. The curved blades can evenly divide the airflow entering the collector 1 into multiple streams. This even division helps ensure a more uniform distribution of airflow when entering the duct 3, avoiding excessively strong or weak local airflow. A uniform airflow distribution can improve the overall performance of the fan, enabling the blades 4 to work more efficiently.

[0024] In this embodiment, when air enters the collector 1, without the diverter blades 2, the air would directly impact the inner wall of the collector 1, generating a large amount of turbulence. Turbulence leads to airflow disorder, increases energy loss, and reduces the efficiency of the fan. The diverter blades 2 guide the airflow, allowing it to flow smoothly along the curved surface of the blades, reducing turbulence. The reduction of turbulence directly leads to a reduction in wind resistance. Wind resistance is the resistance encountered by airflow during its flow; the greater the wind resistance, the more energy the fan needs to consume to propel the airflow. The diverter blades 2 optimize the airflow path, making the airflow smoother, thereby reducing wind resistance and improving the operating efficiency of the fan. The diverter blades 2 can evenly distribute the airflow entering the collector 1 in all directions. Without the diverter blades 2, the airflow may concentrate in a certain area, resulting in uneven airflow distribution. Even airflow distribution helps improve the overall performance of the fan, ensuring that the fan blades 4 are evenly affected by the airflow, thus enabling more efficient air delivery. Even airflow distribution can avoid situations where the local airflow is too strong or too weak, making the fan more stable during operation and improving its efficiency and reliability. The diverter blades 2 reduce turbulence and distribute airflow more evenly, making the airflow smoother as it enters the duct 3. Under the action of the fan blades 4, the airflow forms a certain static pressure within the duct 3. The increase in static pressure helps to improve the air delivery distance and outlet velocity, enabling the fan to more effectively deliver air to farther locations. By optimizing the airflow path, the diverter blades 2 ensure that the airflow is accelerated and transported more efficiently after entering the duct 3. This is particularly important for applications requiring long-distance air delivery (such as farms), significantly improving ventilation efficiency. Turbulence and airflow impact are among the main causes of noise during fan operation. The diverter blades 2 reduce turbulence and distribute airflow evenly, reducing the impact of airflow on the inner wall of the collector 1 and the fan blades 4, thereby reducing noise generation. Smooth airflow contributes to the stable operation of the fan, further reducing vibration and noise during operation.

[0025] See also Figures 1 to 5 As shown, the longitudinal section of the splitter blade 2 is used as the projection plane. The longitudinal section here is the section obtained by cutting parallel to the axis of the collector 1. The splitter blade 2 is arc-shaped, and the trailing edge of the splitter blade 2 is bent clockwise relative to the leading edge of the splitter blade 2.

[0026] In this embodiment, the bow-shaped design allows the diverter blades 2 to guide airflow more smoothly. When air enters the collector 1, the bow-shaped blades guide the airflow along their curved surface, reducing sudden changes in airflow direction and impact. This smooth guidance effectively reduces airflow turbulence and energy loss. The clockwise curving of the bow-shaped blades helps reduce airflow separation. Airflow separation refers to the phenomenon where, when airflow encounters an obstacle, some airflow detaches from the object's surface to form vortices. This bow-shaped blade design better conforms to the natural flow path of the airflow, reducing airflow separation and thus lowering energy loss and noise. The clockwise curving of the bow-shaped blades effectively accelerates the airflow. This design causes the airflow to experience a greater centripetal force as it passes over the blades, thereby accelerating the airflow. This acceleration effect helps increase the fan's outlet velocity and delivery distance. After entering the duct 3, the accelerated airflow can more effectively form static pressure. The increase in static pressure helps increase the delivery distance and outlet velocity, enabling the fan to more effectively deliver air to farther locations. The arc-shaped blades can evenly divide the airflow entering the collector 1 into multiple airflow streams. This even division helps ensure a more uniform distribution of airflow when entering the duct 3, avoiding excessively strong or weak local airflow. Uniform airflow distribution improves the overall performance of the fan, allowing the blades 4 to operate more efficiently. The clockwise curving of the trailing edge of the arc-shaped blades optimizes the directionality of the airflow. This design allows the airflow to flow more effectively along a predetermined direction when entering the duct 3, reducing lateral dispersion and increasing airflow concentration. See also Figures 1 to 5 As shown, with the air outlet 12 as the projection plane, in conjunction with [reference] Figure 6 As shown, along the length of the splitter blade 2, there is a tangent at the connection between the trailing edge of the splitter blade 2 and the air outlet 12, and a radially outward normal at the connection between the trailing edge of the splitter blade 2 and the air outlet 12, that is, the normal is perpendicular to the horizontal line. There is an angle α between the tangent and the normal, and the angle α satisfies: 30°<a<45°.

[0027] In this embodiment, the installation angle of the splitter blade 2 is related to the installation angle of the fan blade 4. A normal fan blade 4 installation angle is less than 45°. A suitable angle for the splitter blade 2 allows for smoother air intake in conjunction with the fan blade 4. The included angle α ensures a smoother transition of airflow from the trailing edge of the splitter blade 2 to the outlet 12. This smooth transition reduces sudden changes in airflow direction and impact, thereby reducing turbulence and energy loss. The range of included angle α ensures optimal directionality of the airflow when entering the duct 3. This angle range effectively guides the airflow along the axial direction of the duct 3, reducing lateral dispersion and increasing airflow concentration. This configuration comprehensively optimizes the guidance, acceleration, distribution, and directionality of the airflow, enabling the fan to operate more efficiently. This comprehensive optimization not only improves the fan's performance but also enhances its adaptability and reliability in various application scenarios.

[0028] See also Figures 1 to 5 As shown, a fan blade 4 is installed in the air duct 3. Taking the longitudinal section of the air duct 3 as the projection plane, the diameter of the fan blade 4 between the two ends of the air duct 3 is d. Multiple blades are arranged circumferentially around the hub of the fan blade 4. Here, the diameter d refers to the distance between two blades in the radial direction, with the hub as the center, where one blade extends towards the inner wall of the air duct 3 and another blade extends towards the inner wall of the air duct 3 on the other side. The length of the collector 1 in the air inlet direction is L1, and the straight length between the leading edge and the trailing edge of the diverter blade 2 is L2. The length L1 satisfies: L1 = 0.3~0.4d, and the straight length L2 satisfies: L2 = L1 * cosα.

[0029] In this embodiment, the length L1 of the collector 1 is set to 0.3∼0.4d. This ratio ensures that the airflow can be effectively guided and rectified before entering the air duct 3, and this length range can effectively reduce the turbulence and energy loss of the airflow, while ensuring that the airflow can enter the air duct 3 smoothly. The straight length L2 of the splitter blade 2 is set to L1*cosa, which enables the airflow to be accelerated more effectively when passing through the splitter blade 2. The introduction of the included angle a (30∘<a<45∘) further optimizes the flow path of the airflow, so that the airflow has higher velocity and more concentrated directionality when entering the air duct 3. By optimizing the airflow path and reducing airflow turbulence and separation, this arrangement significantly reduces wind resistance. The reduction in wind resistance means that the fan needs to consume less energy to push air flow, thereby improving the efficiency of the fan. The reduction in energy loss means that the fan can convert electric energy into mechanical energy more efficiently, thereby improving the operating efficiency of the fan, which not only helps to reduce energy consumption, but also prolongs the service life of the fan. The arrangement of the length L1 of the collector 1 and the straight length L2 of the splitter blade 2 enables the airflow entering the collector 1 to be evenly divided into multiple strands of airflow. This uniform division helps to ensure that the airflow distribution is more uniform when entering the air duct 3, avoiding excessive strong or weak local airflow. Uniform airflow distribution and reduced turbulence help the fan to operate more stably and reduce airflow fluctuations and mechanical vibration.

[0030] Referring to Figures 1 to 5 as shown in the figure, the splitter blade 2 is arched, the maximum bending position of the splitter blade 2 is A, and the length of the maximum bending position A satisfies: A=0.4L2; there is a vertical connecting line between the leading edge and the trailing edge of the splitter blade 2, and the vertical connecting line is the straight length L2. The height between the maximum bending position A and the straight length L2 is dh, the curvature of the splitter blade 2 is w, and the curvature satisfies: w=dh / L2.

[0031] In this embodiment, the maximum curvature A is located at 0.4L2. This arrangement allows the splitter blades 2 to guide the airflow more smoothly. When the airflow enters the collector 1, it flows along the curved surface of the splitter blades 2, reducing sudden changes in airflow direction and impact, thereby reducing turbulence and energy loss. The position and shape of the maximum curvature A of the bow-shaped blades help reduce airflow separation. Airflow separation refers to the phenomenon where, when airflow encounters an obstacle, some airflow detaches from the object's surface to form vortices. This arrangement better conforms to the natural flow path of the airflow, reducing airflow separation and thus reducing energy loss and noise. The position and shape of the maximum curvature A can effectively accelerate the airflow. When the airflow passes through the maximum curvature A, it experiences a greater centripetal force, thereby accelerating the airflow. This acceleration effect helps to increase the fan's outlet velocity and delivery distance. After entering the duct 3, the accelerated airflow can more effectively form static pressure. The increase in static pressure helps to increase the delivery distance and outlet velocity, enabling the fan to more effectively deliver air to farther locations. The location and shape of the maximum bend A can significantly reduce wind resistance. Wind resistance is the resistance encountered by airflow during its flow. The greater the wind resistance, the more energy the fan needs to consume to propel the airflow. This setting reduces wind resistance and improves the efficiency of the fan by optimizing the airflow path and reducing airflow turbulence and separation. The location and shape of the maximum bend A also reduce the impact of airflow on the inner wall of the collector 1 and the fan blades 4 by reducing airflow turbulence and separation.

[0032] See also Figures 1 to 5 As shown, the collector 1 is trumpet-shaped, and the cross-sectional area of ​​the air inlet 11 is larger than the cross-sectional area of ​​the air outlet 12; the cross-sectional area of ​​the air outlet 12 is larger than the cross-sectional area of ​​the air duct 3, and the air duct 3 and the air outlet 12 are connected by a transition ring 5.

[0033] In this embodiment, the horn-shaped collector 1 provides a larger cross-sectional area at the inlet 11, enabling more effective collection of surrounding air. This design, similar to a horn mouth, effectively guides air from different directions into the collector 1, improving airflow collection efficiency. As the airflow moves from the inlet 11 to the outlet 12, the cross-sectional area gradually decreases. This tapering design smoothly guides the airflow, reducing turbulence and energy loss. The tapering channel allows the airflow to gradually accelerate while minimizing impact and separation. The tapering channel design causes the airflow to gradually accelerate as it flows from the inlet 11 to the outlet 12. According to Bernoulli's principle, the airflow speed increases and pressure decreases as it passes through the tapering channel. This acceleration helps increase the fan's outlet speed and delivery distance. The accelerated airflow, upon entering the duct 3, more effectively forms static pressure. This increased static pressure further enhances the delivery distance and outlet speed, allowing the fan to more effectively transport air to farther locations. The tapering channel design also significantly reduces wind resistance. Wind resistance is the resistance encountered by airflow during its flow. The greater the wind resistance, the more energy the fan needs to consume to propel the airflow. This setting reduces wind resistance and improves the efficiency of the fan by optimizing the airflow path and reducing airflow turbulence and separation.

[0034] In this embodiment, the transition ring 5 serves to smoothly transition the airflow from the outlet end 12 of the collector 1 into the interior of the duct 3. Without the transition ring 5, the airflow might encounter a sudden change in cross-section upon entering the duct 3, leading to increased airflow impact and turbulence. The transition ring 5, through its smooth transition design, reduces sudden changes in airflow direction and impact, allowing the airflow to enter the duct 3 more smoothly. The duct 3 and the outlet end 12 are connected by the transition ring 5, ensuring a smooth transition of airflow from the outlet end 12 into the duct 3. The presence of the transition ring 5 significantly reduces the turbulence intensity of the airflow upon entering the duct 3. Turbulence leads to airflow disorder and energy loss, while the transition ring 5, through its smooth transition design, reduces sudden changes in airflow direction and impact, thereby reducing turbulence generation and further optimizing the airflow path. The transition ring 5 reduces energy loss of the airflow upon entering the duct 3, improving airflow efficiency. This design helps improve the overall performance and efficiency of the fan.

[0035] See also Figures 1 to 5 As shown, with the longitudinal section of the duct 3 as the projection plane, the diameter of the duct 3 is D, which is the inner wall diameter of the duct. The outer wall of the transition ring 5 is arc-shaped, and the radius of the arc of the transition ring 5 is R, which satisfies: R=D*0.3. The diameter D satisfies: d+2t, where t is the gap between the fan blade 4 and the duct 3. The length of the duct 3 is L, and the wall thickness of the duct 3 is 10~15mm, which ensures the rigidity of the overall structure while maintaining its lightness.

[0036] In this embodiment, the outer wall of the transition ring 5 is arc-shaped with a radius R = 0.3D. This design allows the airflow to smoothly transition from the outlet 12 of the collector 1 to the interior of the duct 3. The arc-shaped transition ring 5 reduces sudden changes and impacts in the airflow when entering the duct 3, allowing the airflow to enter the duct 3 more smoothly. The arc-shaped transition ring 5 optimizes the airflow path, reducing airflow turbulence and energy loss. This smooth transition helps improve the airflow efficiency, enabling the airflow to be accelerated more efficiently by the fan blades 4 after entering the duct 3. The ratio R = 0.3D ensures the optimal match between the arc radius of the transition ring 5 and the diameter of the duct 3. This design effectively reduces the impact and turbulence of the airflow when entering the duct 3, while ensuring a smooth transition of the airflow into the interior of the duct 3. The arc radius R = 0.3D is an optimized parameter that balances the smoothness of the airflow and the efficiency of the fan.

[0037] In one specific implementation, a connecting plate is provided at the air outlet of the air duct 3. The connecting plate, through the screw holes at the outlet, allows the air duct 3 to be fixed to the wall, providing a secure connection. Holes for fixing the two support arms are provided on the wall surface of the air duct 3, and a reinforcing rib is provided on each of the left and right sides of the outer surface of the air duct 3 to increase its overall strength and prevent breakage. Small horizontal platforms are provided on the upper and lower surfaces of the air duct 3 to enhance the connection between the support frame and the air duct 3, preventing the support frame from sliding.

[0038] See also Figures 1 to 5 As shown, the thickness of a single diverter blade is 4~8mm, and the number of diverter blades 2 is 2n, where n is the number of blades of fan blade 4. The number of diverter blades 2 is related to the number of fan blades 4, and the effect is better when the number is even. Specifically, the number of blades of fan blade 4 is 3~8. Fan blade 4 is fixed to the hub. A suitable gap t can increase the overall static pressure and improve the air outlet speed.

[0039] In this embodiment, the number of diverting blades 2 is 2n. This arrangement ensures that the airflow entering the collector 1 can be uniformly divided into multiple airflow streams. Each diverting blade 2 can effectively divide and guide the airflow into the duct 3, avoiding excessively strong or weak local airflow, thereby improving the uniformity of the airflow. Uniform airflow distribution helps improve airflow stability and reduce airflow fluctuations and turbulence. This stability helps improve the operating efficiency and reliability of the fan, and reduces mechanical vibration and noise. The thickness of a single diverting blade 2 is 4~8mm. This moderate thickness can effectively reduce the resistance of the airflow when passing through the diverting blade 2. Excessively thick diverting blades 2 will lead to greater wind resistance, while blades that are too thin may deform during operation, affecting performance. The thickness of 4~8mm can balance these factors and ensure that the resistance of the airflow when passing through the diverting blade 2 is minimized.

[0040] See also Figures 1 to 5 As shown, a fan includes a motor 6, a fan duct 3, and a flow guide assembly. The flow guide assembly is the aforementioned flow guide assembly. The fan duct 3 includes a first cylinder 301 and a second cylinder 302 that are detachably connected. The first cylinder 301 is disposed above the second cylinder 302. The inner wall of the second cylinder 302 is provided with a detachably connected bracket 7. The motor 6 is mounted on the bracket 7. The hub of the fan blade 4 is sleeved on the output shaft of the motor 6. Multiple blades are arranged circumferentially on the hub. The bracket 7 places the shaft of the motor 6 in the center position, which can ensure dynamic balance.

[0041] In this embodiment, the detachable bracket 7 facilitates the installation and removal of the motor 6. During fan installation, the motor 6 can be easily placed on the bracket 7 and secured without complex fixing structures or tools. This significantly simplifies the installation process and improves efficiency. When maintenance or repair of the motor 6 is required, the detachable bracket 7 allows for quick removal of the motor 6 without disassembling the entire duct 3. This saves time and effort, reduces potential damage to other components, and extends the fan's lifespan. The detachable bracket 7 can be adjusted according to different installation environments and needs. For example, in spaces with limited space, the position and angle of the bracket 7 can be easily adjusted to ensure stable installation of the motor 6. This flexibility allows the fan to better adapt to various complex installation scenarios. This feature allows users to select different bracket 7 configurations based on specific needs. For instance, brackets 7 of different lengths or shapes can be replaced to accommodate different duct 3 sizes or installation requirements. This flexibility provides users with more choices and improves the fan's versatility and applicability. The detachable bracket 7 optimizes the airflow path. By strategically arranging the bracket 7, smooth airflow within the duct 3 is ensured, reducing interference around the motor 6 or the bracket 7. This optimization helps improve the fan's operating efficiency, reduce noise and energy loss. The bracket 7 also ensures a more uniform airflow distribution within the duct 3. By adjusting the position and shape of the bracket 7, localized airflow turbulence can be reduced, improving airflow uniformity and thus enhancing the overall performance of the fan.

[0042] See also Figures 1 to 5 As shown, the support 7 includes a horizontal support arm 701 and a vertical support arm 702. The length of the horizontal support arm 701 extends in the axial direction of the air duct 3. One end of the vertical support arm 702 is connected to the horizontal support arm 701, and the other end of the vertical support arm 702 extends towards the bottom of the second cylinder 302. In this embodiment, the vertical support arm 702 can be set at both ends of the horizontal support arm 701, or only one vertical support arm 702 can be set, but the vertical support arm 702 needs to be set in the middle position of the horizontal support arm 701.

[0043] In this embodiment, the horizontal support arm 701 extends axially in the air duct 3, providing stable horizontal support for the motor 6. This configuration ensures that the motor 6 remains horizontal during operation, reducing tilting or movement caused by vibration or impact, thereby improving the operational stability of the motor 6. The horizontal support arm 701 can evenly distribute the weight of the motor 6 onto the inner wall of the air duct 3, reducing local pressure on the air duct 3 and enhancing the structural stability of the air duct 3. The vertical support arm 702 extends from the horizontal support arm 701 to the bottom of the air duct 3, providing additional vertical support for the motor 6. This configuration further enhances the stability of the motor 6, preventing vertical displacement due to vibration or impact during operation. The vertical support arm 702 enhances the structural strength of the entire support frame 7, enabling it to better withstand the weight of the motor 6 and the vibration generated during operation, reducing the risk of deformation or damage to the support frame 7. The horizontal support arm 701 and the vertical support arm 702 optimize the airflow path. Through their rational layout, the bracket 7 reduces airflow interference around the motor 6 or the bracket 7, ensuring smooth airflow within the duct 3 and minimizing localized airflow turbulence. This arrangement ensures a more uniform airflow distribution within the duct 3. The bracket 7's layout also reduces eddies and turbulence around the motor 6 or the bracket 7, improving airflow uniformity and thus enhancing the overall performance of the fan. The horizontal support arm 701 and the vertical support arm 702 also facilitate the installation and removal of the motor 6. Users can easily place the motor 6 on the horizontal support arm 701 and secure it with the vertical support arm 702, eliminating the need for complex fixing structures or tools. This significantly simplifies the installation process and improves installation efficiency.

[0044] In one specific implementation, the horizontal support arm 701 and the vertical support arm 702 have different lengths. The horizontal support arm 701 is a long support, and the vertical support arm 702 is a short support. The two supports are set separately, which makes transportation more convenient and allows for easy assembly and disassembly. The support 7 can be fixed to the inner wall of the air duct 3 using screws with a diameter of 4-8mm. The support arm is approximately rectangular with chamfered corners. The overall width of the support arm gradually decreases, forming a surface that is wider in the middle and narrower at both ends. This structure can ensure strength while reducing the surface area of ​​the support 7 and lightening the overall weight of the support 7. The lower surface of the horizontal support arm 701 has intersecting reinforcing ribs to increase the strength of the support 7 and prevent breakage. Several screw holes are provided for fixing to the motor 6. The horizontal support arm 701 has a concave surface in the middle. The vertical support arm 702 is fixed to the concave surface with screws, connecting the long and short supports into one unit. The concave surface can better fix the support arm. The long and short supports are fixed together to the mounting groove of the support 7 inside the air duct 3. The collector 1, the air duct 3, the bracket 7 and the motor 6 are stationary components, while the fan blade 4 is a rotating component. The components are assembled into a fresh air unit structure after quality inspection.

[0045] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A flow guiding component, characterized in that, include: Collector (1) and multiple splitter blades (2); The collector (1) has an air inlet (11) and an air outlet (12), and the air outlet (12) is connected to the air duct (3); Multiple diverting blades (2) are spaced apart on the inner wall of the collector (1). The leading edge of the diverting blade (2) extends toward the air inlet (11), and the trailing edge of the diverting blade (2) extends toward the air outlet (12). The diverting blade (2) is arc-shaped with the cross-section of the collector (1) as the projection plane.

2. The flow guiding component according to claim 1, characterized in that, With the longitudinal section of the diverter blade (2) as the projection plane, the diverter blade (2) is arc-shaped, and the trailing edge of the diverter blade (2) is bent clockwise relative to the leading edge of the diverter blade (2).

3. The flow guiding component according to claim 2, characterized in that, With the air outlet (12) as the projection plane, in the length direction of the splitter blade (2), the connection between the trailing edge of the splitter blade (2) and the air outlet (12) has a tangent, and the connection between the trailing edge of the splitter blade (2) and the air outlet (12) has a radially outward normal. The tangent and the normal have an angle α, which satisfies: 30° < α < 45°.

4. The flow guiding component according to claim 3, characterized in that, The wind duct (3) is provided with a wind blade (4). The longitudinal section of the wind duct (3) is used as the projection plane. The diameter between the two ends of the wind blade (4) facing the wind duct (3) is d. The length of the collector (1) in the air inlet direction is L1. The straight length between the leading edge and the trailing edge of the splitting blade (2) is L2. The length L1 satisfies: L1=0.3~0.4d. The straight length L2 satisfies: L2=L1*cosa.

5. The flow guiding component according to claim 4, characterized in that, The maximum bending point of the splitter blade (2) is A, and the length of the maximum bending point A satisfies: A=0.4L2. The height between the maximum bending point A and the straight length L2 is dh. The curvature of the splitter blade (2) is w, and the curvature w satisfies: w=dh / L2.

6. The flow guiding component according to claim 1, characterized in that, The collector (1) is horn-shaped, and the cross-sectional area of ​​the air inlet (11) is larger than the cross-sectional area of ​​the air outlet (12); the cross-sectional area of ​​the air outlet (12) is larger than the cross-sectional area of ​​the air duct (3), and the air duct (3) and the air outlet (12) are connected by a transition ring (5).

7. The flow guiding component according to claim 6, characterized in that, With the longitudinal section of the air duct (3) as the projection plane, the diameter of the air duct (3) is D, the outer wall of the transition ring (5) is arc-shaped, the arc radius of the transition ring (5) is R, and the arc radius R satisfies: R=D*0.

3.

8. The flow guiding component according to claim 1, characterized in that, The thickness of a single flow divider blade (2) is 4~8mm, and the number of flow divider blades (2) is 2n, where n is the number of blades of the wind turbine (4).

9. A fan, characterized in that, The device includes a motor (6), a duct (3), and a flow guiding component. The flow guiding component is the flow guiding component according to any one of claims 1 to 8. The duct (3) includes a first cylinder (301) and a second cylinder (302) that are detachably connected. The first cylinder (301) is disposed above the second cylinder (302). The inner wall of the second cylinder (302) is provided with a detachably connected bracket (7). The motor (6) is mounted on the bracket (7).

10. The fan according to claim 9, characterized in that, The support (7) includes a horizontal support arm (701) and a vertical support arm (702). The length of the horizontal support arm (701) extends in the axial direction of the air duct (3). One end of the vertical support arm (702) is connected to the horizontal support arm (701), and the other end of the vertical support arm (702) extends toward the bottom of the second cylinder (302).

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