Fan blade with air guide structure

Abstract

The utility model relates to fan blade technical field especially, and it is a kind of fan blade with air guide structure, including fan blade body, the fan blade body includes air guide wing and several blades;The air guide wing is protruding in the one side surface of the blade;The other side surface of the blade away from air guide wing is provided with several air guide grooves, the air guide groove with air guide wing are used to guide airflow to reduce airflow turbulence flow.

Description

Technical Field

[0001] This utility model relates to the field of fan blade technology, and in particular to a fan blade with an air guiding structure. Background Technology

[0002] Fan blades are the core components that drive airflow and are widely used in cooling fans, air conditioners, ventilation equipment and other fields. Their design directly affects air output efficiency, noise reduction and operational stability.

[0003] In the field of existing fan blade technology, traditional fan blades mostly adopt a single blade structure, which propels airflow solely through the tilt angle of the blade. They lack a dedicated airflow guiding structure design, leading to turbulence during airflow. This results in low airflow efficiency and significant noise due to airflow disturbance. Some fan blades with airflow guiding structures often have simple guiding components (such as only having airflow channels or airflow vanes), and the coordination between these components and the blades, hub, and other structures is poor, failing to achieve a synergistic airflow guiding effect. They also suffer from insufficient structural stability; for example, the connection between the blade and the hub is not secure, leading to vibration during high-speed rotation, or the blades lack protective structures on their outer periphery, making them susceptible to damage from external impacts. Furthermore, the connection structure of traditional fan blades is often a simple snap-fit ​​or bolt connection, resulting in low precision in the fit with the drive shaft, poor power transmission efficiency, and a tendency to loosen after long-term use, affecting the stability of the fan blade operation. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a fan blade with an air guiding structure that improves air output efficiency and reduces turbulence.

[0005] The present invention adopts the following technical solution: A fan blade with an air guiding structure includes a fan blade body, the fan blade body including an air guiding wing and a plurality of blades; the air guiding wing protrudes from one side surface of the blades; a plurality of air guiding grooves are formed on the other side surface of the blades away from the air guiding wing, the air guiding grooves and the air guiding wing are both used to guide airflow to reduce airflow turbulence.

[0006] A further improvement to the above technical solution is that the fan blade body further includes a central hub, and a plurality of the blades extend radially outward along the outer periphery of the central hub.

[0007] A further improvement to the above technical solution is that the central hub is provided with a connecting structure, which is used to connect with the drive shaft.

[0008] A further improvement to the above technical solution is that the connecting structure is a shaft hole opened at the center of the central hub.

[0009] A further improvement to the above technical solution is that the fan blade body further includes an annular outer frame, which is disposed on the outer periphery of the plurality of blades and is used to protect the plurality of blades and assist in air guidance.

[0010] A further improvement to the above technical solution is that the wind guide wing is in the shape of a convex streamlined airfoil, and the wind guide wing extends radially or circumferentially along the blade.

[0011] A further improvement to the above technical solution is that the number of wind guide vanes is three, and the three wind guide vanes are evenly distributed on the blade.

[0012] A further improvement to the above technical solution is that one end of each of the wind deflectors extends beyond the edge of the blade, and the other end extends through the blade to the side of the blade opposite to the wind deflector.

[0013] A further improvement to the above technical solution is that the number of the air guide slots is multiple, the multiple air guide slots are arranged in an array on the blade, and the multiple air guide slots are located between the annular outer frame and the air guide wing.

[0014] A further improvement to the above technical solution is that one end of each air guide groove extends along the edge of the blade into the interior of the blade, and the width of each air guide groove gradually decreases from the edge of the blade into the interior of the blade.

[0015] The beneficial effects of this utility model are as follows: This invention achieves multiple core advantages through the coordinated design of components such as the fan blade body, guide vanes, blades, guide slots, central hub, connecting structure, and annular outer frame. Regarding structural stability, the central hub and annular outer frame jointly enhance the overall rigidity of the fan blade, while the through-type guide vanes improve the connection strength of components, preventing deformation and damage during high-speed rotation. In terms of airflow guidance and efficiency, the streamlined airfoil-shaped guide vanes and the gradually widening guide slots work in tandem, and the uniform distribution of the guide vanes and the array layout of the guide slots significantly reduce airflow turbulence, improve airflow uniformity and efficiency, and simultaneously reduce airflow resistance and energy loss. Regarding user experience, the design of each component works together to reduce vibration and noise, the annular outer frame provides physical protection, and the shaft hole structure facilitates installation and maintenance, balancing practicality, safety, and comfort. In terms of production and adaptability, the simple shaft hole connection, the arrayed guide slots, and the standardized central hub design reduce processing difficulty and manufacturing costs, while also adapting to different drive shafts, enhancing the versatility of the fan blade. Overall, it meets the requirements for efficient, stable, quiet, and durable fan blades. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the fan blade with an air guiding structure according to the present invention. Figure 2 for Figure 1 A schematic diagram of the fan blade with an air guiding structure from another angle; Figure 3 for Figure 2 A magnified view of circle A of a fan blade with an air guiding structure.

[0017] The numbers on the map are: 10. Fan blade body; 20. Air guide vane; 30. Blade; 40. Air guide groove; 50. Central hub; 60. Connecting structure; 61. Shaft hole; 70. Annular outer frame. 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. 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.

[0019] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figures 1 to 3As shown, this is an embodiment of the present invention, which relates to a fan blade with an air guiding structure, including a fan blade body 10, the fan blade body 10 including an air guiding wing 20 and a plurality of blades 30; the air guiding wing 20 protrudes from one side surface of the blades 30; the blades 30 have a plurality of air guiding grooves 40 on the other side surface away from the air guiding wing 20, and the air guiding grooves 40 and the air guiding wing 20 are both used to guide airflow to reduce airflow turbulence. Specifically, the fan blade body 10 serves as the core load-bearing structure, integrating the air guide wing 20 and the blade 30 to ensure overall structural stability. The air guide wing 20 protrudes from one side of the blade 30, and its protruding shape can guide the airflow in a directional manner, reducing the turbulence when the airflow impacts the blade 30. The air guide groove 40 opened on the other side of the blade 30 away from the air guide wing 20 can further regulate the airflow direction, forming a two-way airflow coordination with the air guide wing 20. The air guide wing 20 guides the airflow direction from one side of the blade 30, and the air guide groove 40 regulates the airflow path from the other side. The synergistic effect of the two can significantly reduce airflow turbulence, which not only improves the air output efficiency of the fan blade, but also reduces the noise generated by turbulence, while avoiding fan blade vibration caused by airflow turbulence and extending the service life of the fan blade.

[0022] like Figure 1 and Figure 2 As shown, the fan blade body 10 also includes a central hub 50, and several blades 30 extend radially outward along the outer periphery of the central hub 50. Specifically, the addition of the central hub 50 provides a unified installation and fixing benchmark for the several blades 30, so that when the blades 30 extend radially outward along their outer periphery, they can maintain a uniform spacing and a consistent extension angle, avoiding uneven stress on the blades 30 due to installation deviations. The radial extension design conforms to the airflow dynamics law when the fan blade rotates, allowing the blades 30 to cut the air more efficiently during rotation, reducing the accumulation of airflow at the root of the blades 30, improving the overall uniformity of airflow. At the same time, the central hub 50 can also enhance the structural strength of the fan blades, preventing the blades 30 from deforming due to excessive centrifugal force when rotating at high speed.

[0023] like Figure 1 and Figure 2 As shown, the central hub 50 is provided with a connecting structure 60, which is used to connect with the drive shaft. Specifically, the connecting structure 60 serves as a connecting component between the fan blade and the drive shaft. Its design ensures the assembly accuracy between the fan blade and the drive shaft, avoiding fan blade rotational eccentricity caused by loose connection. The tight fit reduces energy loss during power transmission from the drive shaft, allowing the torque of the drive shaft to be converted into rotational power of the fan blade more efficiently. It also reduces vibration and noise caused by connection gaps, improves the stability of the fan blade during operation, adapts to different drive shaft specifications, and enhances the versatility of the fan blade.

[0024] like Figure 1 and Figure 2 As shown, the connecting structure 60 is a shaft hole 61 located at the center of the central hub 50. Specifically, the shaft hole 61, as a specific connecting structure 60, is located at the center of the central hub 50, which conforms to the principles of mechanical design. This allows the power of the drive shaft to be evenly transmitted from the center of the fan blade to the surrounding blades 30, avoiding excessive local stress on the fan blade due to power transmission imbalance. The shaft hole 61 has a simple structure and is easy to process, which can reduce the production cost of the fan blade. At the same time, the hole structure facilitates the insertion and removal of the drive shaft and maintenance. If the drive shaft or fan blade needs to be replaced in the future, the disassembly and installation process will be more efficient. In addition, the shaft hole 61 has a high degree of fit with the drive shaft, which can further improve the stability of the connection between the two and reduce wear after long-term use.

[0025] like Figures 1 to 3 As shown, the fan blade body 10 also includes an annular outer frame 70, which is disposed on the outer periphery of the plurality of blades 30 to protect the plurality of blades 30 and assist in airflow guidance. Specifically, the annular outer frame 70 is disposed on the outer periphery of the blades 30, firstly providing physical protection for the blades 30 to prevent damage to the blades 30 caused by impacts from foreign objects, especially when the fan blades are rotating at high speed, preventing the blades 30 from breaking due to accidental collisions; secondly, the annular outer frame 70 can regulate the airflow at the edge of the blades 30, preventing the airflow from escaping from the edge of the blades 30, guiding the airflow to the preset airflow direction, playing an auxiliary airflow guidance role, and improving the concentration of the airflow; at the same time, the annular outer frame 70 can also enhance the overall structural rigidity of the fan blades, reduce the deformation amplitude of the blades 30 during rotation, and further improve the stability and safety of the fan blade operation.

[0026] In some embodiments, compared with the above embodiments, the fan blade body 10 does not include an annular outer frame, and its structure will not be described in detail.

[0027] like Figures 1 to 3 As shown, the air guide wing 20 is in the shape of a convex streamlined airfoil, and the air guide wing 20 extends radially or circumferentially along the blade 30. Specifically, the air guide wing 20 adopts a convex streamlined airfoil design, which conforms to the principles of aerodynamics. When airflow passes over the surface of the air guide wing 20, the streamlined structure can reduce airflow resistance, reduce turbulence on the surface of the air guide wing 20, and improve air guiding efficiency. The radial or circumferential extension along the blade 30 can guide the airflow in a targeted manner according to the rotation direction of the fan blade and the air outlet demand. The radial extension can enhance the airflow along the length of the blade 30, while the circumferential extension can optimize the circumferential distribution of the airflow. Both distribution methods can further reduce airflow turbulence and improve the smoothness of the fan blade's air outlet.

[0028] like Figures 1 to 3As shown, there are three guide vanes 20, which are evenly distributed on the blade 30. Specifically, the design of three guide vanes 20 balances airflow guidance effect and structural lightweight, avoiding insufficient airflow due to too few guide vanes 20, while preventing an excessive number from increasing the weight of the fan blade and airflow resistance. The even distribution ensures balanced airflow in all areas of the blade 30, avoiding local airflow pressure differences on the blade 30 caused by uneven distribution of the guide vanes 20, reducing vibration of the blade 30 caused by pressure differences. At the same time, the uniform airflow effect makes the overall airflow more stable, improving user comfort.

[0029] like Figure 2 and Figure 3 As shown, one end of each of the guide vanes 20 extends beyond the edge of the blade 30, and the other end extends through the blade 30 to the side opposite to the guide vane 20. Specifically, the design of one end of the guide vane 20 extending beyond the edge of the blade 30 and the other end extending through the blade 30 to the opposite side creates a three-dimensional structure of the guide vane 20 spanning the blade 30. On the one hand, this enhances the connection strength between the guide vane 20 and the blade 30, preventing the guide vane 20 from falling off or breaking during high-speed rotation. On the other hand, the through-type structure allows the guide vane 20 to simultaneously guide the airflow on both sides of the blade 30. The end extending beyond the edge of the blade 30 guides the airflow outside the blade 30, while the end extending to the other side helps to regulate the airflow inside the blade 30 (the side closer to the central hub 50), further improving the comprehensiveness of airflow guidance and reducing airflow turbulence on both sides of the blade 30.

[0030] like Figure 2 and Figure 3 As shown, multiple air guide slots 40 are provided, and these multiple air guide slots 40 are arranged in an array on the blade 30, with the multiple air guide slots 40 located between the annular outer frame 70 and the air guide vane 20. Specifically, the array distribution of multiple air guide slots 40 can ensure that the airflow on the side of the blade 30 away from the air guide vane 20 is uniform and regularized, avoiding local airflow accumulation or excessive flow velocity differences. The design of the air guide slots 40 being located between the annular outer frame 70 and the air guide vane 20 can make full use of the effective area of ​​the blade 30, allowing the airflow to enter from the annular outer frame 70, be initially regularized by the air guide slots 40, and then work synergistically with the airflow guided by the air guide vane 20, greatly improving the airflow guidance efficiency. At the same time, the array distribution structure facilitates mass production and reduces production difficulty.

[0031] like Figure 2 and Figure 3As shown, one end of each of the air guide slots 40 extends along the edge of the blade 30 into the interior of the blade 30, and the width of each air guide slot 40 gradually decreases from the edge of the blade 30 towards the interior of the blade 30. Specifically, the design of the air guide slot 40 gradually decreasing in width from the edge of the blade 30 towards the interior conforms to the velocity change law of airflow flowing from the outside to the inside of the blade 30. The airflow velocity is faster at the edge of the blade 30, and the wider slot can accommodate more airflow. As the airflow flows into the interior of the blade 30, the velocity gradually decreases, and the narrowing slot can moderately compress the airflow, maintaining the stability of the airflow velocity and avoiding a sudden drop in velocity or turbulence caused by the constant slot width. At the same time, the gradually changing width structure can also reduce the collision of airflow inside the air guide slot 40, reduce airflow noise, and improve the quietness of the fan blade operation.

[0032] The working principle of this utility model is as follows: During operation, the fan blade body 10 is first connected to the drive shaft through the shaft hole 61 at the center of the central hub 50, and the drive shaft drives the fan blade body 10 to rotate as a whole. During the rotation, several blades 30 extending radially along the outer periphery of the central hub 50 act as the core airflow driving components, cutting the air to generate airflow during rotation. At this time, the protruding streamlined airfoil-shaped guide vanes 20 on one side of the blade 30 directionally guide the airflow radially or circumferentially along the blade 30, reducing turbulence on the surface of the blade 30. At the same time, the air guide slots 40 (located between the annular outer frame 70 and the guide vanes 20, and whose width gradually decreases from the edge of the blade 30 to the inside) on the other side of the blade 30, away from the guide vanes 20, guide the airflow on the other side of the blade 30. The fan blades are well-organized, with a wider slot to accommodate the high-speed airflow at the edge of the blade 30. The gradually changing width maintains a stable airflow velocity and avoids airflow turbulence. The annular outer frame 70 restricts the airflow around the blade 30 to prevent airflow from escaping and protects the blade 30 from external impacts. Three evenly distributed guide vanes 20 and an array of guide slots 40 work together to form bidirectional airflow from both sides of the blade 30, greatly reducing airflow turbulence and ensuring stable airflow along a preset direction, thus improving airflow efficiency and uniformity. Throughout the process, the central hub 50 ensures uniform force and power transmission to the blade 30, and the shaft hole 61 ensures a stable connection between the fan blade and the drive shaft. All components work together to achieve efficient, stable, and low-noise operation of the fan blade.

[0033] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A fan blade with an air guiding structure, characterized in that, The fan includes a fan blade body, which includes a guide vane and several blades; the guide vane protrudes from one side surface of the blades; several guide grooves are formed on the other side surface of the blades away from the guide vane, and both the guide grooves and the guide vane are used to guide airflow to reduce airflow turbulence.

2. The fan blade with an air guiding structure according to claim 1, characterized in that, The fan blade body also includes a central hub, and a plurality of the blades extend radially outward along the outer periphery of the central hub.

3. The fan blade with an air guiding structure according to claim 2, characterized in that, The central hub is provided with a connecting structure, which is used to connect with the drive shaft.

4. The fan blade with an air guiding structure according to claim 3, characterized in that, The connection structure is a shaft hole opened at the center of the central hub.

5. The fan blade with an air guiding structure according to claim 1, characterized in that, The fan blade body also includes an annular outer frame, which is disposed on the outer periphery of the plurality of blades and is used to protect the plurality of blades and assist in air guidance.

6. The fan blade with an air guiding structure according to claim 1, characterized in that, The air guide vane is in the shape of a convex streamlined airfoil, and the air guide vane extends radially or circumferentially along the blade.

7. The fan blade with an air guiding structure according to claim 1, characterized in that, The number of wind deflectors is three, and the three wind deflectors are evenly distributed on the blade.

8. The fan blade with an air guiding structure according to claim 1, characterized in that, One end of each of the guide vanes extends beyond the edge of the blade, and the other end extends through the blade to the side opposite to the guide vane.

9. The fan blade with an air guiding structure according to claim 1, characterized in that, The number of air guide slots is provided in multiples, and the multiple air guide slots are arranged in an array on the blades, and the multiple air guide slots are located between the annular outer frame and the air guide wing.

10. The fan blade with an air guiding structure according to claim 1, characterized in that, One end of each of the air guide slots extends along the edge of the blade into the interior of the blade, and the width of each air guide slot gradually decreases from the edge of the blade into the interior of the blade.

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