A fan and electronic device

Abstract

The application provides a fan and an electronic device, and relates to the technical field of fans. The fan comprises a rotating body, the rotating body can rotate to generate airflow; a shell, the shell has a cavity, the rotating body is arranged in the cavity and forms an airflow channel with the inner wall of the shell; and a straightening plate, the straightening plate is arranged in the airflow channel, and the straightening plate and the flow direction of the airflow satisfy an included angle condition, so that the airflow forms a straight flow mode.

Description

Technical Field

[0001] This application relates to the field of fan technology, and more particularly to a fan and electronic device. Background Technology

[0002] Currently, most fan outlets use a conventional design. In this design, there is a certain distance between the fan blade tip and the heatsink fins, causing the airflow from the fan blade tip to not all flow directly into the heatsink fins. A small portion of the airflow forms eddies between the fan blades and the heatsink fins, leading to a decrease in fan performance and consequently reducing the heat dissipation performance of the cooling module. Utility Model Content

[0003] The embodiments of this application provide the following technical solutions:

[0004] This application provides a fan, comprising: a rotating body capable of rotating to generate airflow; a housing having a cavity, the rotating body being disposed within the cavity and forming an airflow channel with the inner wall of the housing; and a rectifier plate disposed within the airflow channel, wherein the rectifier plate and the flow direction of the airflow satisfy an angle condition, for causing the airflow to form a direct current pattern.

[0005] In some embodiments of this application, the fan further includes: a fin module, wherein an air outlet communicating with the cavity is provided on one side of the housing, the fin module is disposed at the air outlet, and the fin module is disposed opposite to the rotating body; wherein, the rectifier plate is disposed on the airflow channel between the rotating body and the fin module, and the extension range of the rectifier plate at least covers the air inlet area of ​​the fin module to guide the airflow into the gap of the fin module.

[0006] In some embodiments of this application, the rectifier plate is a long, wide plate, the length direction of which satisfies the angle condition with the flow direction of the airflow, and the width direction of which satisfies the parallel condition with the flow direction of the airflow.

[0007] In some embodiments of this application, the rectifier plate is a linear plate structure, and the minimum linear distance between the rectifier plate and the outer periphery of the rotating body maintains a target interval distance.

[0008] In some embodiments of this application, the rectifier plate is an arc-shaped structure adapted to the outer peripheral side of the rotating body, and the distance between the side surface of the rectifier plate facing the rotating body and the outer peripheral surface of the rotating body satisfies the condition that they are equal everywhere.

[0009] In some embodiments of this application, the housing located at the air outlet includes a pressurizing structure protruding toward the cavity. The pressurizing structure includes an adjacent first sidewall and a second sidewall. The first sidewall is disposed toward the rotating body, and the second sidewall is disposed toward the air outlet. The first sidewall is used to pressurize the airflow. The rectifier plate is disposed close to the second sidewall to block at least a portion of the airflow from blowing toward the second sidewall.

[0010] In some embodiments of this application, the surface of the rectifier plate facing the rotating body is a convex arc surface that protrudes in the direction of the rotating body.

[0011] In some embodiments of this application, the thickness of the rectifier plate gradually increases and then decreases along the direction from the rotating body to the air outlet.

[0012] In some embodiments of this application, the longitudinal cross-section of the rectifier plate along the length direction is a curved structure with at least one arc.

[0013] This application also provides an electronic device, including a functional module; a fan including a rotating body capable of rotating to generate airflow; a housing having a cavity, the rotating body being disposed within the cavity and forming an airflow channel with the inner wall of the housing; and a rectifier plate disposed within the airflow channel, wherein the rectifier plate and the flow direction of the airflow satisfy an angle condition, for making the airflow form a direct current pattern, the airflow being used to dissipate heat from the functional module. Attached Figure Description

[0014] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0015] Figure 1 A schematic diagram of the fan structure of Embodiment 1 of this application is shown.

[0016] Figure 2 A schematic diagram of the rectifier plate in the fan of Embodiment 2 of this application is shown.

[0017] Figure 3 A schematic diagram of the fan structure of Embodiment 3 of this application is shown.

[0018] Figure 4 A schematic diagram of the fan structure of Embodiment 3 of this application is shown.

[0019] Figure 5The diagram schematically illustrates a cross-sectional view of the rectifier plate in any of the fans in Embodiments 1 to 4 of this application;

[0020] Explanation of icon numbers:

[0021] 1. Rotating body; 2. Shell; 201. Cavity; 202. Air outlet; 203. Pressurization structure; 203a. First side wall; 203b. Second side wall; 3. Airflow channel; 4. Rectifier plate; 401. Convex arc surface; 5. Fin module. Detailed Implementation

[0022] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0023] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0024] In existing technologies, fans, such as axial or centrifugal fans, have a certain gap between their blades and heat sink fins. When the fan operates and generates airflow, due to this gap, some high-speed airflow, after exiting from the blade tip, cannot directly and effectively enter the flow channels of the heat sink fins to form an effective cooling airflow, i.e., a direct flow. Instead, this airflow forms local vortices or backflows in the gap area between the blade tip and the heat sink fins. These vortex airflows not only consume some of the fan's output kinetic energy but also easily cause turbulent airflow direction, disrupting the direct flow pattern and reducing the airflow penetration efficiency, thereby reducing the fan's cooling efficiency.

[0025] Therefore, this application provides a fan that can solve the problem of decreased fan performance and reduced heat dissipation efficiency caused by turbulent vortex airflow in the fan.

[0026] Example 1

[0027] This application provides a fan, such as... Figure 1 As shown, it includes: a rotating body 1, which is capable of rotating to generate airflow; a housing 2, which has a cavity 201, and the rotating body 1 is disposed in the cavity 201 to form an airflow channel 3 with the inner wall of the housing 2; and a rectifier plate 4, which is disposed in the airflow channel 3, and the rectifier plate 4 and the airflow direction satisfy the angle condition to make the airflow form a direct current.

[0028] Rotating body 1, for example, is a rotating component containing a motor and fan blades. When the motor drives the fan blades to rotate, rotating body 1 can draw in air and generate airflow. Housing 2 may have a cavity 201 surrounding rotating body 1. The inner wall of housing 2 and rotating body 1 together form an airflow channel 3, used to guide airflow from the air inlet to the air outlet 202. A rectifier plate 4 is disposed within the airflow channel 3, and its position can be set near the air outlet 202 of housing 2 based on simulation testing. The rectifier plate 4 forms an angle with the airflow direction, enabling it to disperse the airflow, change its direction, and suppress lateral or swirling airflow. This guides the airflow and directs it in a straight line towards the air outlet 202. This angle can be acute or obtuse, depending on the position of the air outlet 202 and the airflow direction.

[0029] When the rotating body 1 generates a high-speed airflow, the airflow flows along the airflow channel 3 within the housing 2 towards the air outlet 202. In related technologies, some airflow attempts to diffuse laterally due to inertia or pressure difference, forming vortices. However, the fan provided in this embodiment can be intercepted by the rectifier plate 4 within the airflow channel 3, allowing the rectifier plate 4 to guide this laterally flowing airflow, forcing it to turn and merge with the main airflow, forming a straight-flow airflow directed towards the air outlet 202. This significantly reduces the generation of vortices in this area, allowing more and more regular airflow to be effectively discharged from the air outlet 202, thus significantly improving the overall cooling capacity of the fan. At the same noise level, the fan with the rectifier plate 4 shows a significant performance improvement compared to the original fan, with an approximately 8% increase in airflow and an approximately 18% increase in static pressure.

[0030] In some embodiments, the fan further includes: a fin module 5, an air outlet 202 communicating with the cavity 201 is provided on one side of the housing 2, the fin module 5 is disposed at the air outlet 202, and the fin module 5 is disposed opposite to the rotating body 1; wherein, a rectifier plate 4 is disposed on the airflow channel 3 between the rotating body 1 and the fin module 5, and the extension range of the rectifier plate 4 at least covers the air inlet area of ​​the fin module 5, so as to guide the airflow into the gap of the fin module 5.

[0031] The fan housing 2 has a cavity 201 inside to accommodate the rotating body 1. An air outlet 202 communicating with the cavity 201 is opened on one side of the housing 2, serving as a channel for airflow to leave the fan and enter the external heat dissipation area. A fin module 5 is disposed at the air outlet 202 and can consist of multiple fins that meet parallel relationships or a specific arrangement. For example, all fins are completely parallel to each other, oriented in the same direction, and evenly spaced, or the angular deviation between adjacent fins does not exceed 5°, to allow for a certain degree of manufacturing error or design deviation. Multiple gap channels are formed between the fins to increase the contact area with the airflow and achieve efficient heat exchange. In some embodiments, the fins can be made of metal, such as aluminum alloy or copper, which have good thermal conductivity, thereby further improving the heat exchange efficiency between the fins and the airflow.

[0032] The fin module 5 is positioned opposite the rotating body 1 of the fan, allowing the airflow generated by the rotation of the rotating body 1 to directly blow onto the fin module 5. A rectifier plate 4 is positioned on the airflow channel 3 between the rotating body 1 and the fin module 5. This location is ideal for areas where airflow vortices are easily generated between the air intake areas of the rotating body 1 and the fin module 5 in the design. By placing the rectifier plate 4 at this location, airflow can be effectively guided, vortices suppressed, and airflow utilization efficiency and overall heat dissipation performance significantly improved.

[0033] The size of the rectifier plate 4 is not smaller than the air intake area of ​​the fin module 5, so as to completely cover the entire air intake area, ensuring that the airflow from the rotating body 1 is guided by the rectifier plate 4 before entering the gaps of the fin module 5. Since the rectifier plate 4 can completely cover the air intake area of ​​the fin module 5, it can uniformly rectify the entire airflow, ensuring that the airflow is evenly distributed to each fin gap, avoiding insufficient local airflow. Furthermore, the rectifier plate 4 forms an angle with the airflow direction, guiding the airflow thrown radially or obliquely from the rotating body 1 into a straight line, effectively preventing lateral diffusion or backflow of airflow before entering the fin module 5. The fan provided in this embodiment not only effectively suppresses eddies in the airflow channel 3, but also significantly improves the uniformity and directness of the airflow, ensuring that all fin gaps receive sufficient and regular cooling airflow, thereby greatly improving the overall heat dissipation efficiency.

[0034] In some embodiments, the rectifier plate 4 is a long strip-shaped plate, with its length direction satisfying the angle condition with the airflow direction and its width direction satisfying the parallel condition with the airflow direction.

[0035] The rectifier plate 4 can be a slender flat plate structure with a certain width, and its overall shape can be similar to a baffle or guide vane structure. Its length direction forms a certain angle with the airflow direction, which can be from the rotating body 1 to the fin module 5. This allows the rectifier plate 4 to effectively intercept and disperse the airflow from the rotating body 1 and guide it to change direction, thereby changing the airflow path and causing it to converge in the DC direction.

[0036] The wide side of the rectifier plate 4 is parallel to the airflow direction, meaning its long side faces the airflow, while its narrow side extends along the airflow direction. This allows the airflow to flow smoothly along the width of the rectifier plate 4. The airflow only contacts the narrow surface of the rectifier plate 4. Due to the small contact area, the airflow can easily glide over the rectifier plate 4, avoiding the formation of a large area of ​​obstruction on the side of the plate, thus effectively preventing secondary vortices caused by the structure of the rectifier plate 4 itself.

[0037] The fan provided in this application embodiment can achieve efficient airflow while minimizing the additional flow resistance and pressure loss caused by the rectifier plate 4, ensuring a smooth airflow path and low energy loss, and further improving the aerodynamic efficiency and overall heat dissipation performance of the fan.

[0038] In some embodiments, the rectifier plate 4 is a linear plate structure, and the minimum linear distance between the rectifier plate 4 and the outer periphery of the rotating body 1 maintains the target interval distance.

[0039] The rectifier plate 4 can be a flat, straight, or non-curved plate structure, with an overall shape resembling a thin plate extending in a straight line. The thickness of the thin-plate rectifier plate 4 is much smaller than its length and width; for example, the thickness-to-width ratio is less than 1 / 5 or less than 1 / 50, thus forming a thin-plate structure. A fixed interval, the target interval distance, is maintained between the side of the rectifier plate 4 facing the rotating body 1 and the minimum straight-line distance between the side of the rotating body 1 and the outer periphery of the rotating body 1. The outer periphery of the rotating body 1 refers to the largest circumferential surface swept by the tip of the fan blades during rotation, forming a cylindrical boundary. The side of the rectifier plate 4 facing the rotating body 1 is a straight side. When the rectifier plate 4 is arranged relative to the rotating body 1, there is a shortest straight-line distance between this straight side and the cylindrical surface formed by the outer periphery of the rotating body 1. This shortest straight-line distance is located at the radial tangent point between the straight side and the cylindrical surface, and this shortest distance maintains the target interval distance. The target spacing needs to be set in a way that balances performance and safety. If the distance is too large, the airflow generated by the rotating body 1 will form vortices before reaching the rectifier plate 4, thereby weakening the intervention effect of the rectifier plate 4. If the distance is too small, it may affect the aerodynamic performance of the rotating body 1 itself, or even pose a risk of mechanical interference.

[0040] Therefore, the target spacing distance should be able to efficiently capture and reshape turbulent airflow while avoiding interference with the normal operation of the rotating body 1. At the optimized target spacing distance, the airflow is effectively regulated as it passes over the flat surface of the rectifier plate 4, allowing the flow direction to smoothly change and concentrate into the gaps of the fin module 5. This suppresses eddies while improving airflow utilization efficiency and heat dissipation performance.

[0041] In some embodiments, the surface of the rectifier plate 4 facing the rotating body 1 is a convex arc surface 401 that protrudes in the direction of the rotating body 1.

[0042] like Figure 1 and Figure 5 As shown, Figure 5 This is a schematic diagram of the cross-sectional structure of the rectifier plate 4. The surface of the rectifier plate 4 facing the rotating body 1 is machined into an outwardly convex arc-shaped surface, that is, the center of curvature of the surface is located on the outer side of the rectifier plate 4. The convex arc surface 401 can be a circular arc or a non-circular arc free-form surface optimized according to the flow field simulation, so as to more accurately fit the actual airflow trajectory.

[0043] When the fan is running, the airflow from the rotating body 1 first contacts the convex arc surface 401 of the rectifier plate 4. Thanks to its convex geometry, this surface can guide the airflow to smoothly turn along the curved surface and flow towards the fin module 5. Due to the fluid's characteristic of adhering to the convex curved surface (i.e., the wall effect), the airflow will naturally adhere to the surface of the rectifier plate 4 after contacting the convex arc surface 401, and thus be smoothly guided towards the fin direction along the width direction of the rectifier plate 4.

[0044] The convex arc surface 401 can reduce the frontal resistance when the airflow hits the rectifier plate 4, reduce the airflow impact loss, make the airflow smoother, and reduce energy loss, thereby more efficiently integrating the turbulent airflow into a concentrated DC form and improving the overall heat dissipation efficiency.

[0045] In some embodiments, the thickness of the rectifier plate 4 gradually increases and then decreases along the direction from the rotating body 1 to the air outlet 202.

[0046] like Figure 5 As shown, the thickness of the rectifier plate 4 is not constant, but changes continuously along the direction from the rotating body 1 to the air outlet 202 (i.e., the airflow direction). The thickness changes from small to large, then back to small. The initial end of the rectifier plate 4 (near the rotating body 1) has a smaller thickness, forming a sharp or slightly convex leading edge. The thickness gradually increases in the middle region, and gradually decreases at the end (near the air outlet 202 or the fin module 5), forming a converging trailing edge. This results in an overall cross-sectional profile that is teardrop-shaped, airfoil-shaped, or torpedo-shaped, a typical low-drag streamlined design that effectively reduces aerodynamic drag.

[0047] When the airflow exits from the rotating body 1, it first contacts the thinner leading edge of the rectifier plate 4. The airflow is smoothly split and quickly adheres to the surface of the rectifier plate 4, reducing impact loss. As the airflow flows along the surface of the rectifier plate 4, the plate thickness gradually increases, forming a gradually widening flow channel, which helps the airflow transition smoothly and be effectively regulated. Subsequently, the thickness of the rectifier plate 4 gradually decreases, forming a tapering tail, which guides the airflow to close smoothly and suppresses wake separation and vortex generation.

[0048] By varying the thickness of the rectifier plate 4, it achieves efficient rectification while maintaining extremely low wind resistance, minimizing obstruction to airflow. This results in a more stable and regular airflow, allowing it to directly enter the gap channels of the fin module 5 in a high-quality DC form, significantly improving heat dissipation efficiency and aerodynamic performance.

[0049] Example 2

[0050] The difference between the fan provided in Embodiment 2 of this application and that in Embodiment 1 lies in the different structure of the rectifier plate 4.

[0051] In some embodiments, such as Figure 2 As shown, the longitudinal section of the rectifier plate 4 along its length is a curved structure with at least one arc.

[0052] The rectifier plate 4 can be optimized based on flow field simulation results, with its longitudinal cross-section along its length set as a curved structure. The longitudinal cross-section refers to the section cut along the length of the rectifier plate 4. On this section, the outline of the rectifier plate 4 appears as a curve with at least one arc. This curve can be a single arc, such as an upward or downward convex circular arc, parabola, or elliptical arc. It can also be multi-arc, such as an S-shape, W-shape, or a more complex free curve containing multiple continuous convexities and concaveities. This design allows the rectifier plate 4 to form a continuously curved guide surface in three-dimensional space, rather than a traditional planar structure, thus providing more flexible airflow control capabilities.

[0053] Since there may be multiple regions prone to vortex generation in the airflow channel 3, by rationally designing the curvature distribution of the curve, the airflow can be guided in a targeted manner at different locations to suppress turbulent vortices. The fan provided in this embodiment can accurately match complex flow fields through the curved rectifier plate 4, thereby maximizing airflow utilization efficiency and enhancing overall heat dissipation performance.

[0054] Example 3

[0055] The fan provided in Embodiment 3 of this application differs from those in Embodiments 1 and 2 in that the rectifier plate 4 has a different structure.

[0056] In some embodiments, such as Figure 3 and Figure 5 As shown, the rectifier plate 4 is an arc-shaped structure adapted to the outer periphery of the rotating body 1, and the distance between the surface of the rectifier plate 4 facing the rotating body 1 and the outer periphery of the rotating body 1 satisfies the condition that they are equal everywhere.

[0057] The rectifier plate 4 is an arc-shaped plate curved along the circumference, and its curved profile matches the circular profile of the outer circumference of the fan rotor 1. The side of the rectifier plate 4 facing the rotor 1 is arc-shaped, and its radius of curvature is the same as or maintains a fixed ratio with the radius of curvature of the outer diameter of the rotor 1. Furthermore, the radial distance between the inner surface of the rectifier plate 4 and the outer circumferential surface of the rotor 1 remains constant at every corresponding point on the circumference, thereby forming a uniformly wide annular air gap between them. This equidistant gap ensures that the airflow is consistently constrained and guided at all circumferential positions.

[0058] Because the gaps are uniform, the airflow exiting the rotating body 1 will not generate vortices in the circumferential direction due to excessively large local gaps, nor will it cause excessive stagnation due to excessively small gaps, effectively avoiding uneven circumferential airflow. This significantly improves the uniformity and rectification efficiency of the airflow, greatly enhancing the fan's heat dissipation efficiency.

[0059] Example 4

[0060] The difference between the fan provided in Embodiment 2 of this application and Embodiments 1 to 3 lies in the different arrangement of the rectifier plate 4.

[0061] In some embodiments, such as Figure 4 and Figure 5 As shown, the housing 2 located at the air outlet 202 includes a pressurization structure 203 protruding into the cavity 201. The pressurization structure 203 includes an adjacent first sidewall 203a and a second sidewall 203b. The first sidewall 203a is disposed towards the rotating body 1, and the second sidewall 203b is disposed towards the air outlet 202. The first sidewall 203a is used to pressurize the airflow. The rectifier plate 4 is disposed close to the second sidewall 203b to block at least part of the airflow from blowing towards the second sidewall 203b.

[0062] The pressure boosting structure 203 is located on the air outlet 202 side of the housing 2, inside the cavity 201 and close to the air outlet 202. The pressure boosting structure 203 is composed of adjacent first sidewalls 203a and second sidewalls 203b, protruding from the inner wall of the housing 2 towards the center of the cavity 201, forming a geometric protrusion resembling a step. The first sidewall 203a faces the rotating body 1, i.e., towards the inside of the fan and the rotating body 1. The second sidewall 203b faces the air outlet 202, towards the external environment or the heat dissipation fin module 5. The pressure boosting structure 203 can improve the static pressure output capability of the fan. When the rotating body 1 rotates at high speed, the airflow is thrown out within the airflow channel 3 and flows near the first sidewall 203a. Due to the change in the airflow channel 3, a negative pressure zone can be formed locally, thereby increasing the airflow pressure and velocity without significantly increasing the rotational speed.

[0063] However, airflow easily forms vortices in the pressurization structure 203 region, and some airflow may also impact the second sidewall 203b when flowing out through the air outlet 202, causing energy loss and aerodynamic noise. To solve this problem, the fan provided in this embodiment has a rectifier plate 4 near the second sidewall 203b of the pressurization structure 203. The rectifier plate 4 can be a teardrop-shaped guide plate. The housing 2 can be provided with a base plate for supporting the rotating body 1, and the axial direction of the rotating body 1 is perpendicular to the plane of the base plate. The rectifier plate 4 is fixedly connected to the base plate, and its height direction can be perpendicular to the base plate, extending along the axial direction of the rotating body 1. The rectifier plate 4 can effectively block at least part of the airflow from directly impacting the second sidewall 203b, changing its impact angle, weakening the impact intensity on the second sidewall 203b, and reducing energy dissipation and noise generation. Meanwhile, the rectifier plate 4 can also disperse the vortices formed near the pressurization area and guide these airflows to recombine into a consistent direct current airflow along its streamlined surface, smoothly blowing towards the fin module 5, thus improving airflow utilization efficiency. At the same noise level, the fan with the rectifier plate 4 shows a significant performance improvement compared to the original fan, with an increase in airflow of approximately 2.3% and an increase in static pressure of approximately 3.8%.

[0064] In some embodiments, the pressurization structure 203 is provided with a groove along the height direction of the housing 2, and one end of the rectifier plate 4 is slidably connected to the inner wall of the housing 2 through the groove, so that the position of the rectifier plate 4 can be adjusted along the height direction of the rotating body 1.

[0065] A chute is provided on the pressurization structure 203 and extends along the height direction of the housing 2 (i.e., parallel to the rotation axis of the fan) on the surface of its first sidewall 203a or second sidewall 203b. The chute can be a T-slot, dovetail slot, rectangular groove, or guide rail structure, with its length direction consistent with its height direction. The chute acts as a guide rail to guide and constrain the movement path of the rectifier plate 4.

[0066] One end of the rectifier plate 4 may be provided with a sliding part that matches the slide groove, such as a slider, roller, or protrusion. The sliding part is embedded in the slide groove of the pressurization structure 203 to form a sliding fit, allowing the rectifier plate 4 to reciprocate along the length of the slide groove. After being adjusted to the target position, the position of the rectifier plate 4 can be locked by fixing structures such as locking screws, buckles, and friction locks to prevent it from shifting due to vibration during fan operation.

[0067] Since different heat dissipation fin modules 5 have different wind resistance characteristics, the optimal position of the rectifier plate 4 for a specific heat dissipation module can be found through experiments or simulations. Users can manually adjust the rectifier plate 4 to the optimal position according to actual heat dissipation needs, thereby achieving precise matching between fan performance and heat dissipation load and maximizing heat dissipation efficiency.

[0068] Example 5

[0069] This application provides an electronic device, including: a functional module; a fan including a rotating body 1, which is capable of rotating to generate airflow; a housing 2, which has a cavity 201, with the rotating body 1 disposed within the cavity 201 and forming an airflow channel 3 with the inner wall of the housing 2; and a rectifier plate 4, which is disposed within the airflow channel 3, and the rectifier plate 4 and the airflow direction satisfy an angle condition to make the airflow form a direct current, and the airflow is used to dissipate heat from the functional module.

[0070] Functional modules are the core components in electronic devices that generate heat, such as central processing units (CPUs), graphics processing units (GPUs), power modules, power devices, or batteries. Fans are integrated inside electronic devices to generate airflow, directly or indirectly cooling the functional modules.

[0071] The fan includes a rotating body 1, which consists of a motor and fan blades, and is installed within the cavity 201 of the housing 2. When the motor is powered on, it drives the fan blades to rotate at high speed, thereby generating a directional airflow. The airflow channel 3 is formed by the space between the outer periphery of the rotating body 1 and the inner wall of the housing 2, and is used to guide the airflow from the fan inlet to the outlet in an orderly manner. A rectifier plate 4 is disposed within the airflow channel 3, and can be located in the area between the fan blade outlet end and the air outlet 202. The rectifier plate 4 forms a preset or optimized angle with the airflow direction, which can effectively guide the turbulent airflow thrown out by the fan blades into a direct current shape, thereby significantly improving the regularity and utilization efficiency of the airflow.

[0072] By integrating any of the fans described in embodiments 1 to 4 of this application into the electronic device, the heat dissipation problem caused by airflow vortices in traditional fans can be effectively solved. Through the active regulation of airflow by the rectifier plate 4, more, more uniform, and more stable airflow efficiently passes through the air outlet 202, greatly enhancing the heat exchange capacity. This not only improves the aerodynamic efficiency of the fan itself but also significantly improves the overall heat dissipation performance of the electronic device, helping to maintain the stable operation of functional modules within a safe temperature range, thereby improving the performance, energy efficiency, and long-term reliability of the electronic device.

[0073] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fan, characterized in that, include: A rotating body capable of rotating to generate airflow; A housing having a cavity, wherein the rotating body is disposed within the cavity and forms an airflow channel with the inner wall of the housing; A rectifier plate is disposed within the airflow channel, and the rectifier plate and the flow direction of the airflow satisfy an angle condition to make the airflow form a direct current pattern.

2. The fan according to claim 1, characterized in that, Also includes: The fin module has an air outlet on one side of the housing that communicates with the cavity, the fin module is disposed at the air outlet, and the fin module is disposed opposite to the rotating body; The rectifier plate is disposed on the airflow channel between the rotating body and the fin module, and the extension range of the rectifier plate covers at least the air intake area of ​​the fin module to guide the airflow into the gap of the fin module.

3. The fan according to claim 2, characterized in that, The rectifier plate is a long, wide plate, with its length direction forming an angle with the airflow direction and its width direction parallel to the airflow direction.

4. The fan according to claim 3, characterized in that, The rectifier plate is a linear plate structure, and the minimum straight-line distance between the rectifier plate and the outer periphery of the rotating body maintains the target interval distance.

5. The fan according to claim 3, characterized in that, The rectifier plate is an arc-shaped structure adapted to the outer peripheral side of the rotating body, and the distance between the side surface of the rectifier plate facing the rotating body and the outer peripheral surface of the rotating body satisfies the condition that they are equal everywhere.

6. The fan according to claim 2, characterized in that, The housing located at the air outlet includes a pressurization structure protruding toward the cavity. The pressurization structure includes an adjacent first sidewall and a second sidewall. The first sidewall is disposed toward the rotating body, and the second sidewall is disposed toward the air outlet. The first sidewall is used to pressurize the airflow. The rectifier plate is positioned close to the second sidewall to block at least a portion of the airflow from blowing toward the second sidewall.

7. The fan according to any one of claims 4 to 6, characterized in that, The surface of the rectifier plate facing the rotating body is a convex arc surface that protrudes in the direction of the rotating body.

8. The fan according to claim 6, characterized in that, The thickness of the rectifier plate gradually increases and then decreases along the direction from the rotating body to the air outlet.

9. The fan according to claim 3, characterized in that, The longitudinal cross-section of the rectifier plate along the length direction is a curved structure with at least one arc.

10. An electronic device, characterized in that, include: Functional modules; A fan, including a rotating body capable of rotating to generate airflow; A housing having a cavity, wherein the rotating body is disposed within the cavity and forms an airflow channel with the inner wall of the housing; A rectifier plate is disposed within the airflow channel, and the rectifier plate and the flow direction of the airflow satisfy an angle condition, which is used to make the airflow form a DC shape, and the airflow is used to dissipate heat from the functional module.

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