Fan module and fan

Abstract

We provide a fan module that can avoid damage to the blades and reduce noise. [Solution] The fan module comprises a wind drive member 1, a first duct 2, and a second duct 3. The second duct is attached to one end of the first duct, and the wind drive member is mounted inside the first duct and comprises a plurality of blades 111 distributed at intervals in the radial direction of the first duct. Inside the first duct, a plurality of first wind-cutting blades 21 are provided between the wind drive member and the second duct, and the plurality of first wind-cutting blades are arranged at intervals around the axis of the first duct to define a plurality of first straightening passages 22. Inside the second duct, a plurality of second wind-cutting blades 31 are arranged at intervals around the axis of the second duct, and the plurality of second wind-cutting blades define a plurality of second straightening passages 32. The width of the gap between the end of the blades closest to the inner wall surface of the first duct and the inner wall surface of the first duct is 1 to 4 mm.

Description

Technical Field

[0001] This application relates to the technical field of fans, and particularly to fan modules and fans.

Background Art

[0002] Small fans such as handheld fans are one of the daily necessities for people to bring coolness on hot summer days. These small fans are driven by a fan module to send high-speed wind with strong wind force. These small fans are loved by many consumers because they are small in volume, lightweight, convenient to carry, and can be put into a bag or held in the hand for use at any time.

[0003] The current fan module improves the blowing speed by adding a blowing hood structure, and while maintaining the miniaturization of the volume, arranges the largest possible blades in the hood to improve the blowing air volume. The installation of the gap between the blades and the hood affects the performance of the fan module. If the gap is too small, the blades may interfere with the hood during high-speed rotation, causing damage to the blades and problems with the safety of use. If the gap is too large, the blades are small, not only the wind force of the blades is insufficient, but more turbulent flow is likely to occur in the gap, affecting the wind speed and generating a large amount of noise.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of this application is to provide a fan module and a fan in order to solve the problem that in the prior art, the installation of the gap between the blades and the hood affects the performance of the fan module. If the gap is too small, the blades may interfere with the hood during high-speed rotation, causing damage to the blades and problems with the safety of use. If the gap is too large, the blades are small, not only the wind force of the blades is insufficient, but more turbulent flow is likely to occur in the gap, affecting the wind speed and generating a large amount of noise.

Means for Solving the Problems

[0005] The present invention discloses a fan module comprising a wind driving member, a first duct and a second duct, the second duct being attached to one end of the first duct, both the first and second ducts penetrating axially, the wind driving member being mounted inside the first duct, the wind driving member comprising a plurality of blades distributed at intervals in the radial direction of the first duct, the blades being driven to cause airflow from the first duct to the second duct, a plurality of first wind-cutting blades provided between the wind driving member and the second duct inside the first duct, the plurality of first wind-cutting blades being arranged at intervals around the axis of the first duct to form a plurality of first straightening passages, a plurality of second wind-cutting blades being arranged at intervals around the axis of the second duct inside the second duct to form a plurality of second straightening passages, and the width of the gap between the end of the blades closest to the inner wall surface of the first duct and the inner wall surface of the first duct is 1 to 4 mm.

[0006] Preferably, the ends of the plurality of first air deflecting blades that are close to the inner wall of the first duct are inclined in a clockwise or counterclockwise direction, and the inclination direction of the plurality of blades is opposite to the inclination direction of the first air deflecting blades.

[0007] Preferably, the first wind deflector blade is provided at an angle in the axial direction of the first duct, and the multiple blades are provided in an arc-shaped curve.

[0008] Preferably, the wind driving member comprises a motor unit and a blade base, the motor unit is mounted inside the first duct, the blade base is fitted onto the motor unit, and the blades are provided at intervals on the peripheral wall of the blade base.

[0009] Preferably, the second wind deflector blade is provided curved in an arc in the circumferential direction of the second duct, and the first wind deflector blade is provided curved in an arc in the circumferential direction of the first duct, with the curvature direction of the first wind deflector blade being opposite to the curvature direction of the second wind deflector blade.

[0010] Preferably, a second connecting base is provided inside the second duct, the axis of the second connecting base coincides with the axis of the second duct, and a plurality of second wind deflector blades are provided with one end connected to the second connecting base and the other end connected to the inner wall of the second duct, and the side of the second wind deflector blades away from the first duct is provided to be recessed toward the first duct.

[0011] Preferably, the fan module further comprises a rear cover, the rear cover is provided with several spaced-apart wind deflectors, and the rear cover is provided to cover the side of the first duct that is away from the second duct.

[0012] Preferably, the first air deflector blade is provided curved in an arc in the circumferential direction of the first duct, and the second air deflector blade is provided curved in an arc in the circumferential direction of the second duct, with the curvature direction of the first air deflector blade being opposite to the curvature direction of the second air deflector blade.

[0013] Preferably, the height of the upper surface of the second connection base is lower than the height of the side of the second duct that is away from the first duct.

[0014] Preferably, the second connection base has a first recessed cavity, which is open on the side adjacent to the first duct.

[0015] Preferably, a first connection base is provided within the first duct, and a plurality of first air deflector blades are connected at one end to the first connection base and at the other end to the inner wall of the first duct, and a first recessed cavity is provided in contact with the first connection base.

[0016] Preferably, in the radial projection of the first duct and the second duct, there is no gap between the second air deflector blade and the first air deflector blade.

[0017] Preferably, a fitting groove is provided around the edge of one of the first and second ducts facing the other, and a fitting edge is provided around the edge of the other facing the other, with the fitting edge fitted into the fitting groove.

[0018] Preferably, the multiple second air vent blades are arranged parallel to the axis of the second duct and are linear in shape.

[0019] Preferably, the ends of the plurality of first air vents that are close to the inner wall of the first duct are inclined in a clockwise or counterclockwise direction. The wind driving member comprises a motor unit and a blade base. The motor unit is mounted inside the first duct, and the blade base is fitted onto the motor unit. Multiple blades are spaced apart on the peripheral wall of the blade base, and the multiple blades extend from one side of the blade base to the other. The inclination direction of the multiple blades is opposite to the inclination direction of the first wind-cutting blade.

[0020] Preferably, the multiple first air deflecting blades are arranged inclined in the axial direction of the second duct, and the multiple vanes are arranged in an arc-shaped curve in the circumferential direction of the vane base.

[0021] Preferably, a first connection base is provided within the first duct, the axis of the first connection base coincides with the axis of the first duct, a plurality of first wind deflector blades are connected at one end to the first connection base and at the other end to the inner wall of the first duct, and the motor unit is mounted on the side of the first connection base opposite to the second duct.

[0022] Preferably, the wind driving member is equipped with a connecting wire, and a wire passage groove is provided in the edge of the first duct facing the second duct or the edge of the second duct facing the first duct. The connecting wire passes through the first straightening passage from the side of the first wind deflector blade opposite the second duct, and is drawn out of the first and second ducts through the wire passage groove.

[0023] Preferably, a second connecting base is provided inside the second duct, and a plurality of second wind deflector blades are connected at one end to the second connecting base and at the other end to the inner wall of the second duct, and a fitting groove is provided on the side of the first connecting base facing the second duct to fit the second connecting base, and the second connecting base is fitted into the fitting groove.

[0024] The present application further discloses a fan including the above fan module.

[0025] Compared with the prior art, the beneficial effects of the fan module according to the embodiments of the present application are as follows. The present application sets the width W1 of the gap between the end close to the inner wall surface of the first duct of the blade and the inner wall surface of the first duct to 1 to 4 mm. By setting the gap W1 to this width, it is ensured that the blade is less likely to interfere with the hood during high-speed rotation, the damage of the blade and the problem of use safety can be avoided, and the blade can be made as large as possible to improve the wind force of the blade. Also, since the width of the gap is not too large, the formation of turbulent flow in the gap can be reduced, the influence on the wind speed can be avoided, and the noise can be reduced.

[0026] Hereinafter, the technical solution of the present application will be described in more detail with reference to the drawings and embodiments.

Brief Description of the Drawings

[0027] [Figure 1] It is a schematic diagram of the fan module in the embodiment of the present application. [Figure 2] It is another schematic diagram of the fan module in the embodiment of the present application. [Figure 3] It is an exploded schematic diagram of the fan module in the embodiment of the present application. [Figure 4] It is another exploded schematic diagram of the fan module in the embodiment of the present application. [Figure 5] It is a schematic diagram of the first duct and the wind driving member in the embodiment of the present application. [Figure 6] It is a partially enlarged view of part A in FIG. 5. [Figure 7] It is another schematic diagram of the first duct and the wind driving member in the embodiment of the present application. [Figure 8] It is a schematic diagram of the first duct in the embodiment of the present application. [Figure 9] It is another schematic diagram of the first duct in the embodiment of the present application. [Figure 10] It is another schematic diagram of the first duct in the embodiment of the present application. [Figure 11] This is a schematic diagram of the second duct in the embodiment of the present application. [Figure 12] This is another schematic diagram of the second duct in the embodiment of the present application. [Figure 13] This is another schematic diagram of the second duct in the embodiment of the present application. [Figure 14] This is a schematic diagram of a fan module in another embodiment of the present invention. [Figure 15] This is another schematic diagram of a fan module in another embodiment of the present invention. [Figure 16] This is an exploded schematic diagram of a fan module in another embodiment of the present invention. [Figure 17] This is another exploded schematic diagram of a fan module in another embodiment of the present invention. [Figure 18] This is a schematic diagram of the second duct in another embodiment of the present application. [Figure 19] This is another schematic diagram of the second duct in another embodiment of the present application. [Figure 20] This is a schematic diagram of the first duct in another embodiment of the present application. [Figure 21] This is another schematic diagram of the first duct in another embodiment of the present application. [Modes for carrying out the invention]

[0028] Furthermore, the embodiments and features of the present invention can be combined with each other, as long as they do not contradict each other. Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

[0029] A first embodiment of the present invention provides a fan module. As shown in Figures 1 to 6, the fan module comprises a wind driving member 1, a first duct 2, and a second duct 3, the second duct 3 being attached to one end of the first duct 2, and both the first duct 2 and the second duct 3 passing through each other in the axial direction. The wind driving member 1 is installed inside the first duct 2 and is used to drive airflow from the first duct 2 to the second duct 3. The wind driving member 1 comprises a plurality of blades 111 distributed at intervals in the radial direction of the first duct 2, and the blades 111 are driven to drive airflow from the first duct 2 to the second duct 3.

[0030] Within the first duct 2, a plurality of first wind-cutting blades 21 are provided between the wind-driving member 1 and the second duct 3. The plurality of first wind-cutting blades 21 are arranged at intervals around the axis of the first duct 2, thereby defining a plurality of first straightening passages 22. Within the second duct 3, a plurality of second wind-cutting blades 31 are arranged at intervals around the axis of the second duct 3, and the plurality of second wind-cutting blades 31 define a plurality of second straightening passages 32. The width of the gap between the end of the blade 111 that is close to the inner wall surface of the first duct 2 and the inner wall surface of the first duct 2 is 1 to 4 mm.

[0031] In this invention, the width W1 of the gap between the end of the blade 111 that is close to the inner wall surface of the first duct 2 and the inner wall surface of the first duct 2 is set to 1 to 4 mm. By setting the gap W1 to this width, it is ensured that the blade 111 is less likely to interfere with the hood when rotating at high speed, thereby avoiding damage to the blade 111 and problems with safety during use, and also making the blade 111 as large as possible and improving the airflow of the blade 111. Furthermore, because the width of the gap is not too large, the formation of turbulence in the gap is reduced, avoiding an impact on wind speed and reducing noise.

[0032] Specifically, the fan module is further provided with a first duct 2 and a second duct 3. A first wind-cutting blade 21 is provided in the first duct 2, and the first wind-cutting blade 21 can initially straighten the airflow generated by the blades 111. That is, after the blades 111 are driven and generate airflow, the turbulent and dispersed airflow is sent into a first straightening passage 22 formed by multiple first wind-cutting blades 21, where it is relatively concentrated and divided into multiple orderly airflows. Furthermore, a second wind-cutting blade 31 is provided in the second duct 3, and the airflow that has passed through the first straightening passage 22 enters the second straightening passage 32, where it is divided again, becoming more concentrated and orderly. The first straightening passage 22 and the second straightening passage 32 can provide the airflow with a sufficiently long flow stroke, and based on this, after two straightenings, the airflow becomes more concentrated, the wind force becomes stronger, and the user can feel cooler.

[0033] Specifically, the width W1 of the gap between the end of the blade 111 closest to the inner wall surface of the first duct 2 and the inner wall surface of the first duct 2 may be set to one of 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, or 4 mm. Preferably, the width W1 of the gap between the end of the blade 111 closest to the inner wall surface of the first duct 2 and the inner wall surface of the first duct 2 is 1.5 mm. The gap width W1 is 1.5 mm, which is within the safe range of 1 to 4 mm, and effectively reduces the risk of the blade 111 colliding with or interfering with the inner wall of the first duct 2 during high-speed rotation, thereby protecting the blade 111 from damage and extending its lifespan. In addition, a gap width of 1.5 mm allows for a relatively large blade 111 size, which contributes to improving the wind power output of the blade 111. A larger blade 111 can drive more air, thereby generating a stronger wind force. Furthermore, the small gap width W1 of 1.5 mm contributes to reducing airflow turbulence in the gap, thereby reducing noise, improving airflow stability, ensuring that the airflow remains orderly as it passes through the first duct 2, contributing to greater concentration as it passes through the first wind-cutting blade 21, improving airflow straightening efficiency, making the airflow more orderly as it enters the second duct 3, and further improving the concentration and output efficiency of the wind power. This optimization of wind power output and airflow straightening provides users with a cooler and more comfortable user experience. The small gap width also contributes to noise reduction, making the fan operate more quietly.

[0034] Furthermore, as shown in combination with Figures 7 to 10, the ends of the multiple first wind-cutting blades 21 that are close to the inner wall of the first duct 2 are inclined in a clockwise or counterclockwise direction, and the inclination direction of the multiple vanes 111 is opposite to the inclination direction of the first wind-cutting blades 21. By having the vanes 111 inclined in the opposite direction to the inclination direction of the first wind-cutting blades 21, the vanes 111 can drive more airflow into the first straightening passage 22 when rotating. Specifically, by inclining in one direction, the first wind-cutting blades 21 can guide the airflow to be blown out at a specific angle, and by having the vanes 111 in the opposite direction to the inclination direction of the first wind-cutting blades 21, the direction of the airflow can be further adjusted, making it more concentrated and directivity increased. When the airflow generated by the vanes 111 passes through the first wind-cutting blades 21, the inclination of the first wind-cutting blades 21 divides and redirects the airflow. Such a design can enhance the straightening effect of the airflow and make the airflow more orderly. By controlling the tilt direction of the blades 111 and the first wind-cutting blades 21, turbulence and vortices in the airflow inside the first duct 2 can be reduced, thereby reducing noise and improving the efficiency of wind power transmission.

[0035] More specifically, in one embodiment, with reference to the side where the second duct 3 is located, the first wind deflector blade 21 is installed at an inclination in a counterclockwise direction, and the vanes 111 are installed at an inclination in a clockwise direction.

[0036] Furthermore, the first wind-cutting blade 21 is positioned at an angle in the axial direction of the first duct 2, that is, the first wind-cutting blade 21 is positioned offset on both the upper and lower sides, which allows it to guide the airflow, enabling the airflow to be guided more quickly and more concentratedly by the second duct 3. Multiple blades 111 are positioned in an arc shape. By positioning the first wind-cutting blade 21 at an angle in the axial direction, it is possible to guide the airflow to flow in a specific direction, increasing the directivity of the airflow, concentrating the wind force more effectively, and reducing lateral dissipation. The arc-shaped curved design of the blades 111 increases the contact area between the blades 111 and the air, thereby generating greater wind force at the same rotational speed and improving the efficiency of the fan. The arc-shaped curved blades 111 can drive the airflow more effectively, and when combined with the angled first wind-cutting blade 21, they can further streamline the airflow, reduce turbulence and vortices, and reduce noise. The design of the arc-shaped blades 111 and the inclined first wind-cutting blades 21 contributes to reducing turbulence and vortices in the airflow formed inside the first duct 2, thereby reducing energy loss and improving wind power transmission efficiency. Furthermore, the arc-shaped blades 111 can distribute the wind power more uniformly, and the inclined first wind-cutting blades 21 can further adjust the direction of the airflow, making the wind power more uniform at output.

[0037] Specifically, as shown in Figure 3, the wind drive member 1 comprises a motor unit 12 and a blade base 11. The motor unit 12 is installed inside the first duct 2, the blade base 11 is fitted onto the motor unit 12, and the blades 111 are spaced apart on the peripheral wall of the blade base 11. The motor unit 12 is installed inside the first duct 2, and the blade base 11 is fitted onto the motor unit 12. This structural design makes the entire wind drive member 1 more compact, saving space and facilitating installation and maintenance. The motor unit 12 directly drives the blade base 11, reducing the number of transmission parts and improving the efficiency of power transmission, thereby improving the overall efficiency of the fan module. The blades 111 are spaced apart on the peripheral wall of the blade base 11, ensuring a uniform distribution and flow of airflow, reducing mutual interference of airflow between the blades 111, and improving the output efficiency of wind power. The motor unit 12 typically comprises a stator and a rotor, with the impeller base 11 fitted onto the rotor. The rotor rotates to drive the impeller base 11, causing it to rotate. The specific installation of the motor unit 12 can be done using conventional technology, and a detailed explanation is omitted here.

[0038] On the other hand, the second wind deflector blade 31 is provided in an arc shape that curves circumferentially around the second duct 3. The arc-shaped second wind deflector blade 31 can more effectively guide and straighten the airflow passing through the second duct 3, making the airflow more orderly and concentrated. The arc-shaped design of the second wind deflector blade 31 contributes to the concentration of airflow, causing the wind force to be more concentrated in a specific direction. The arc-shaped second wind deflector blade 31 can further reduce turbulence and vortices in the airflow inside the second duct 3, thereby reducing noise and improving the efficiency of wind force transmission.

[0039] Specifically, the first wind deflector blade 21 is curved in an arc around the circumference of the first duct 2, and the curvature direction of the first wind deflector blade 21 is opposite to that of the second wind deflector blade 31. The opposite curvature directions of the first wind deflector blade 21 and the second wind deflector blade 31 allow for bidirectional rectification of the airflow, resulting in a more orderly and concentrated airflow as it passes through the second duct 3, improving the efficiency of wind power transmission. This design optimizes the dynamic characteristics of the airflow, making the airflow within the second duct 3 smoother and reducing energy loss. The orderly airflow contributes to the reduction of turbulence and vortices, thereby reducing noise and providing a quieter operating environment.

[0040] Furthermore, as shown in Figures 11 to 13, a second connection base 33 is provided inside the second duct 3, the axis of the second connection base 33 coincides with the axis of the second duct 3, and multiple second wind deflector blades 31 are connected at one end to the second connection base 33 and at the other end to the inner wall of the second duct 3, with the side of the second wind deflector blades 31 away from the first duct 2 recessed toward the first duct 2. The axis of the second connection base 33 coincides with the axis of the second duct 3, and this design ensures the mounting stability of the second wind deflector blades 31 and reduces vibration and noise caused by improper mounting. By providing the side of the second wind deflector blades 31 away from the first duct 2 recessed toward the first duct 2, the airflow can be concentrated, the wind force can be concentrated in the axial direction, and the output efficiency of the wind force can be improved.

[0041] The second wind deflector blade 31 defines multiple second straightening passages 32 by connecting both ends of it to the second connecting base 33 and the inner wall of the second duct 3, respectively. The second connecting base 33 may be cylindrical, thereby reducing wind resistance and making the distance from the side wall surface of the second connecting base 33 to the inner wall of the second duct 3 all equal.

[0042] The height of the upper surface of the second connection base 33 is lower than the height of the side of the second duct 3 that is away from the first duct 2. By making the height of the upper surface of the second connection base 33 lower than one side of the second duct 3, a complete airflow outlet surface is formed on the outlet surface of the second duct 3, allowing the airflow to cover the entire outlet surface before being blown out of the second duct 3. This avoids the problem of insufficient airflow in the intermediate region of the outlet surface due to obstruction by the second connection base 33, and makes the airflow distribution in the outlet region more uniform.

[0043] A first recessed cavity 331 is provided in the second connection base 33, with the side adjacent to the first duct 2 being open. In this embodiment, the second duct 3 can be made lighter by providing the first recessed cavity 331 in the second connection base 33. Specifically, the first recessed cavity 331 is a cylindrical recessed cavity, and the entire second connection base 33 is cylindrical. The first recessed cavity 331 is provided in contact with the second connection base 33. Therefore, the first recessed cavity 331 can be sealed to some extent, preventing airflow from entering the first recessed cavity 331 when it flows into the second duct 3, thus avoiding turbulence in the airflow, which would affect the orderly flow of the airflow and increase noise.

[0044] Furthermore, in the radial projection of the first duct 2 and the second duct 3, there is no gap between the second wind deflector blade 31 and the first wind deflector blade 21. In this embodiment, in the radial projection of the first duct 2 and the second duct 3, there is no gap between the second wind deflector blade 31 and the first wind deflector blade 21, so that after the airflow exits the first straightening passage 22, it enters the second straightening passage 32 directly, thereby avoiding turbulence in the airflow in the gap and ensuring that the airflow is orderly and stable.

[0045] A first connection base 23 is provided inside the first duct 2, and the axis of the first connection base 23 coincides with the axis of the first duct 2. Multiple first wind deflector blades 21 are connected at one end to the first connection base 23 and at the other end to the inner wall of the first duct 2. The motor unit 12 is mounted on the side of the first connection base 23 opposite to the second duct 3. The installation of the first connection base 23 facilitates the connection of the first wind deflector blades 21.

[0046] Furthermore, the wind driving member 1 is equipped with a connecting wire (not shown), and a wire passage groove (not shown) is provided in the edge of the first duct 2 facing the second duct 3 or the edge of the second duct 3 facing the first duct 2. The connecting wire passes through the first straightening passage 22 from the side of the first wind cutting blade 21 opposite to the second duct 3, and is drawn out of the first duct 2 and second duct 3 through the wire passage groove. The wire passage groove and the existing first straightening passage 22 allow the connecting wire to be easily drawn out of the first duct 2 and second duct 3. Specifically, the connecting wire is electrically connected to the circuit board 13 of the motor unit 12, and the stator of the motor unit 12 is electrically connected to the circuit board 13. After the connecting wire is drawn out, it is further electrically connected to the main circuit board 13, but a detailed explanation is omitted here.

[0047] Furthermore, as shown in Figures 9 and 13, a fitting groove 34 is provided around the edge of one of the first ducts 2 and the second duct 3 facing the other, and a fitting edge 24 is provided around the edge of the other facing the other. The fitting edge 24 is fitted into the fitting groove 34. The fitting groove 34 and fitting edge 24 improve the ease of assembly and the stability of mounting of the first duct 2 and the second duct 3. The first duct 2 and the second duct 3 may also be bonded together with an adhesive.

[0048] Furthermore, the fan module is further equipped with a rear cover 4, which has multiple spaced-apart wind deflector bars 41, and the rear cover 4 is installed to cover the side of the first duct 2 that is away from the second duct 3. The wind deflector bars 41 of the rear cover 4 can initially straighten the airflow that flows into the first duct 2, making the airflow more orderly, reducing turbulence in the airflow before it enters the blades 111, improving the efficiency of wind power transmission, reducing noise caused by turbulence in the airflow, and providing a quieter user experience.

[0049] A second embodiment of the present invention provides a fan module. As shown in Figures 14 to 19, the fan module comprises a wind driving member 1, a first duct 2, and a second duct 3. The second duct 3 is attached to one end of the first duct 2, and both the first duct 2 and the second duct 3 penetrate each other axially. The wind driving member 1 is installed inside the first duct 2 and is used to drive airflow from the first duct 2 to the second duct 3. A plurality of first wind cutting blades 21 are provided inside the first duct 2 between the wind driving member 1 and the second duct 3, and the plurality of first wind cutting blades 21 are arranged at intervals around the axis of the first duct 2, thereby defining a plurality of first straightening passages 22.

[0050] Inside the second duct 3, multiple second air deflector blades 31 are arranged at intervals around the axis of the second duct 3, defining multiple second straightening passages 32, and the multiple second air deflector blades 31 are provided parallel to the axis of the second duct 3 and are in a straight line.

[0051] In the fan module of the present invention, a first duct 2 and a second duct 3 are provided, and a first wind-cutting blade 21 is provided in the first duct 2, so that the first wind-cutting blade 21 can initially straighten the airflow generated by the wind-driving member 1. That is, after the wind-driving member 1 is driven and generates airflow, the turbulent and dispersed airflow is blown into a first straightening passage 22 formed by the multiple first wind-cutting blades 21, and is divided into multiple relatively concentrated and orderly airflows. Furthermore, a second wind-cutting blade 31 is provided in the second duct 3, and the airflow that has passed through the first straightening passage 22 enters the second straightening passage 32, is divided again, and becomes more concentrated and orderly. The first and second straightening passages 22 and 32 can provide the airflow with a sufficiently long flow stroke. Based on this, after two straightenings, the airflow becomes more concentrated and the wind force is stronger. Furthermore, since the second wind deflector blade 31 is positioned parallel to the axis of the second duct 3 and is straight, it does not excessively guide, obstruct, or interfere with the airflow radially in the second duct 3 during the second straightening. For example, the second wind deflector blade 31 does not curve in an arc, which would cause the airflow to be excessively concentrated in the middle region of the outlet surface during the second straightening. This allows the fan module to provide a sufficiently strong wind force and maintain a sufficiently large outlet area, resulting in a cooler user experience.

[0052] Specifically, as shown in Figure 18, a second connection base 33 is provided inside the second duct 3, the axis of the second connection base 33 coincides with the axis of the second duct 3, and multiple second wind deflector blades 31 are connected at one end to the second connection base 33 and at the other end to the inner wall of the second duct 3. Providing the second connection base 33 facilitates the connection and installation of the second wind deflector blades 31. Multiple second wind deflector blades 31 define multiple second straightening passages 32 by connecting both ends of the second connection base 33 and the inner wall of the second duct 3, respectively. The second connection base 33 may be cylindrical, thereby reducing wind resistance and making the distance from the side wall surface of the second connection base 33 to the inner wall of the second duct 3 all equal. The height of the first wind deflector blade 21 is equal to the height of the second connection base 33, and the heights of the first wind deflector blade 21 and the second connection base 33 may be slightly less than the height of the second duct 3.

[0053] Furthermore, as shown in Figure 17, a first recessed cavity 331 is opened in the second connection base 33 on the side opposite to the first duct 2. This means that the second duct 3 can be made lighter by opening the first recessed cavity 331 in the second connection base 33, and because the first recessed cavity 331 is opened on the side of the second connection base 33 opposite to the first duct 2, it reduces the possibility that airflow will enter the first recessed cavity 331, cause turbulence in the airflow, affect wind power, and increase noise. Specifically, the first recessed cavity 331 is a cylindrical recessed cavity, and the entire second connection base 33 is cylindrical.

[0054] Furthermore, in the radial projection of the first duct 2 and the second duct 3, there is no gap between the second wind deflector blade 31 and the first wind deflector blade 21. This means that in the radial projection of the first duct 2 and the second duct 3, there is no gap between the second wind deflector blade 31 and the first wind deflector blade 21, and after the airflow exits the first straightening passage 22, it enters the second straightening passage 32 directly, thereby avoiding turbulence in the airflow in the gap and ensuring that the airflow is orderly and stable.

[0055] Specifically, as shown in Figures 20 and 21, the ends of the multiple first wind-cutting blades 21 that are close to the inner wall of the first duct 2 are inclined in a clockwise or counterclockwise direction. The wind-driving member 1 comprises a motor unit and a blade base 11. The motor unit is mounted inside the first duct 2, and the blade base 11 is fitted onto the motor unit. Multiple blades 111 are provided at intervals on the peripheral wall of the blade base 11, and the multiple blades 111 extend from one side of the blade base 11 to the other. The inclination direction of the multiple blades 111 is opposite to the inclination direction of the first wind-cutting blades 21. Because the inclination direction of the blades 111 is opposite to that of the first wind-cutting blades 21, the motor unit can drive more airflow into the first straightening passage 22 when it rotates. More specifically, in one embodiment, with reference to the side where the second duct 3 is located, the first wind deflector blade is installed at an inclination in a counterclockwise direction, and the vane 111 is installed at an inclination in a clockwise direction.

[0056] Specifically, the motor unit typically comprises a stator and a rotor, with the impeller base 11 fitted onto the rotor, and the rotor rotates to drive the impeller base 11 to rotate. The specific installation of the motor unit can be done using conventional technology, and a detailed explanation is omitted here.

[0057] Furthermore, the multiple first air deflecting blades 21 are positioned at an angle in the axial direction of the second duct 3, that is, the first air deflecting blades 21 are positioned offset on both the upper and lower sides, allowing them to guide the airflow and guide the airflow more quickly and intensively through the second duct 3. The multiple blades 111 are positioned in an arc shape around the circumferential direction of the vane base 11, allowing more airflow to be driven into the first straightening passage 22.

[0058] Furthermore, a first connection base 23 is provided inside the first duct 2, and the axis of the first connection base 23 coincides with the axis of the first duct 2. Multiple first wind deflector blades 21 are connected at one end to the first connection base 23 and at the other end to the inner wall of the first duct 2, and the motor unit is attached to the side of the first connection base 23 opposite to the second duct 3. The installation of the first connection base 23 facilitates the connection of the first wind deflector blades 21.

[0059] Furthermore, as shown in Figure 14, the wind drive member 1 is equipped with a connecting wire, and a wire passage groove 25 is provided in the edge of the first duct 2 facing the second duct 3 or the edge of the second duct 3 facing the first duct 2. The connecting wire passes through the first straightening passage 22 from the side of the first wind cutter blade 21 opposite to the second duct 3, and is pulled out of the first duct 2 and second duct 3 through the wire passage groove 25. The wire passage groove 25 and the existing first straightening passage 22 allow the connecting wire to be easily pulled out of the first duct 2 and second duct 3. Specifically, the connecting wire is electrically connected to the circuit board of the motor unit, and the stator of the motor unit is electrically connected to the circuit board. After the connecting wire is pulled out, it is further electrically connected to the main circuit board, but a detailed explanation is omitted here.

[0060] Furthermore, as shown in Figures 17, 18, and 20, a fitting groove 231 is provided on the side of the first connecting base 23 facing the second duct 3, which fits the second connecting base 33. A fitting groove 34 is provided around the edge of one of the first ducts 2 and the second duct 3 facing the other, and a fitting edge 24 is provided around the edge of the other facing one side. The fitting edge 24 is fitted into the fitting groove 34, and the second connecting base 33 is fitted into the fitting groove 231. By fitting the fitting groove 231, the fitting edge 24, and the second connecting base 33 into the fitting groove 231, the ease of assembly and the stability of installation of the first duct 2 and the second duct 3 can be improved. The first duct 2 and the second duct 3 may also be bonded together with an adhesive.

[0061] In addition, in the first and second embodiments described above, the remaining technical solutions can be combined with each other, excluding the parallel or non-generalized technical solutions.

[0062] This application further discloses a fan equipped with a fan module in any one of the embodiments described above. The fan has the fan module described above and also has the same technical effects as the fan module described above, and a detailed explanation is omitted here.

[0063] It should be understood that the above embodiments are used solely to illustrate the technical solutions of the present application and are not intended to limit them, and that those skilled in the art can modify the technical solutions described in the above embodiments or substitute some of their technical features with equivalents, all of which shall fall within the scope of protection of the claims appended to this application. [Explanation of symbols]

[0064] 1. Wind driving member 11. Wings 111 feathers 12 Motor Units 13 Circuit board 2. First duct 21. First wind-cutting blade 22 1st rectification passage 23. First connection base 231 Fitting groove 24 Fitting edge 25 Wire passage groove 3. Second duct 31. Second wind-cutting blade 32 2nd rectification passage 33 Second Connection Base 331 First concave cavity 34 Fitting groove 4 Rear cover 41 Wind deflector

Claims

1. A fan module comprising a wind drive member, a first duct and a second duct, wherein the second duct is attached to one end of the first duct, and both the first and second ducts penetrate each other axially, the wind drive member is mounted inside the first duct, and the wind drive member comprises a plurality of blades distributed at intervals in the radial direction of the first duct, the blades are driven to cause airflow to flow from the first duct to the second duct, Within the first duct, a plurality of first wind-cutting blades are provided between the wind-driving member and the second duct, and the plurality of first wind-cutting blades are arranged at intervals around the axis of the first duct, thereby defining a plurality of first straightening passages. Within the second duct, a plurality of second wind-cutting blades are arranged at intervals around the axis of the second duct, and the plurality of second wind-cutting blades define a plurality of second straightening passages. The width of the gap between the end of the blade that is close to the inner wall surface of the first duct and the inner wall surface of the first duct is 1 to 4 mm. The ends of the plurality of first air deflecting blades that are close to the inner wall of the first duct are inclined in a clockwise or counterclockwise direction, and the inclination direction of the plurality of blades is opposite to the inclination direction of the first air deflecting blades. The first wind deflector blade is provided at an angle in the axial direction of the first duct, and the plurality of blades are provided in an arc-shaped curve. A fan module characterized in that the second wind-cutting blade is provided curved in an arc in the circumferential direction of the second duct, the first wind-cutting blade is provided curved in an arc in the circumferential direction of the first duct, and the curvature direction of the first wind-cutting blade is opposite to the curvature direction of the second wind-cutting blade.

2. A fan module comprising a wind drive member, a first duct and a second duct, wherein the second duct is attached to one end of the first duct, and both the first and second ducts penetrate each other axially, the wind drive member is mounted inside the first duct, and the wind drive member comprises a plurality of blades distributed at intervals in the radial direction of the first duct, the blades are driven to cause airflow to flow from the first duct to the second duct, Within the first duct, a plurality of first wind-cutting blades are provided between the wind-driving member and the second duct, and the plurality of first wind-cutting blades are arranged at intervals around the axis of the first duct, thereby defining a plurality of first straightening passages. Within the second duct, a plurality of second wind-cutting blades are arranged at intervals around the axis of the second duct, and the plurality of second wind-cutting blades define a plurality of second straightening passages. The width of the gap between the end of the blade that is close to the inner wall surface of the first duct and the inner wall surface of the first duct is 1 to 4 mm. A fan module characterized in that the first wind-cutting blade is provided curved in an arc in the circumferential direction of the first duct, the second wind-cutting blade is provided curved in an arc in the circumferential direction of the second duct, and the curvature direction of the first wind-cutting blade is opposite to the curvature direction of the second wind-cutting blade.

3. A fan module comprising a wind drive member, a first duct and a second duct, wherein the second duct is attached to one end of the first duct, and both the first and second ducts penetrate each other axially, the wind drive member is mounted inside the first duct, and the wind drive member comprises a plurality of blades distributed at intervals in the radial direction of the first duct, the blades are driven to cause airflow to flow from the first duct to the second duct, Within the first duct, a plurality of first wind-cutting blades are provided between the wind-driving member and the second duct, and the plurality of first wind-cutting blades are arranged at intervals around the axis of the first duct, thereby defining a plurality of first straightening passages. Within the second duct, a plurality of second wind-cutting blades are arranged at intervals around the axis of the second duct, and the plurality of second wind-cutting blades define a plurality of second straightening passages. The width of the gap between the end of the blade that is close to the inner wall surface of the first duct and the inner wall surface of the first duct is 1 to 4 mm. Multiple of the second wind-cutting blades are arranged parallel to the axis of the second duct and are linear in shape. The ends of the plurality of first air vents that are close to the inner wall of the first duct are provided inclined in a clockwise or counterclockwise direction. The wind driving member comprises a motor unit and a blade base, the motor unit is mounted inside the first duct, the blade base is fitted onto the motor unit, a plurality of blades are provided at intervals on the peripheral wall of the blade base, the plurality of blades extend from one side of the blade base to the other side, and the inclination direction of the plurality of blades is opposite to the inclination direction of the first wind cutting blade. A first connection base is provided within the first duct, the axis of the first connection base coincides with the axis of the first duct, a plurality of first wind-cutting blades are connected at one end to the first connection base and at the other end to the inner wall of the first duct, and the motor unit is mounted on the side of the first connection base opposite to the second duct. A fan module characterized in that a second connection base is provided in the second duct, a plurality of second wind-cutting blades are connected at one end to the second connection base and at the other end to the inner wall of the second duct, a fitting groove that fits the second connection base is provided on the side of the first connection base facing the second duct, and the second connection base is fitted into the fitting groove.

4. The fan module according to claim 2 or 3, characterized in that the ends of the plurality of first wind-cutting blades that are close to the inner wall of the first duct are inclined in a clockwise or counterclockwise direction, and the inclination direction of the plurality of blades is opposite to the inclination direction of the first wind-cutting blades.

5. The fan module according to claim 4, characterized in that the first wind-cutting blade is provided at an inclination in the axial direction of the first duct, and the plurality of blades are provided in an arc-shaped curve.

6. The fan module according to any one of claims 1 to 3, wherein the wind driving member comprises a motor unit and a blade base, the motor unit is mounted inside the first duct, the blade base is fitted onto the motor unit, and the blades are provided at intervals on the peripheral wall of the blade base.

7. The fan module according to claim 5, characterized in that the second wind-cutting blade is provided curved in an arc in the circumferential direction of the second duct, the first wind-cutting blade is provided curved in an arc in the circumferential direction of the first duct, and the curvature direction of the first wind-cutting blade is opposite to the curvature direction of the second wind-cutting blade.

8. The fan module according to any one of claims 1 to 3, characterized in that a second connection base is provided in the second duct, the axis of the second connection base coincides with the axis of the second duct, a plurality of second wind-cutting blades are connected at one end to the second connection base and at the other end to the inner wall of the second duct, and the side of the second wind-cutting blades away from the first duct is provided to be recessed toward the first duct.

9. The fan module according to any one of claims 1 to 3, further comprising a rear cover, wherein the rear cover is provided with a plurality of spaced-apart wind deflectors, and the rear cover is provided to cover the side of the first duct that is away from the second duct.

10. The fan module according to claim 1 or 3, characterized in that the first wind-cutting blade is provided curved in an arc in the circumferential direction of the first duct, the second wind-cutting blade is provided curved in an arc in the circumferential direction of the second duct, and the curvature direction of the first wind-cutting blade is opposite to the curvature direction of the second wind-cutting blade.

11. The fan module according to claim 8, characterized in that the height of the upper surface of the second connection base is lower than the height of the side of the second duct that is away from the first duct.

12. The fan module according to claim 8, characterized in that the second connection base has a first recessed cavity which is open on the side adjacent to the first duct.

13. The fan module according to claim 12, characterized in that a first connection base is provided in the first duct, a plurality of first wind-cutting blades are connected at one end to the first connection base and at the other end to the inner wall of the first duct, and the first recessed cavity is provided in contact with the first connection base.

14. The fan module according to claim 1 or 2, characterized in that there is no gap between the second wind-cutting blade and the first wind-cutting blade in the radial projection of the first duct and the second duct.

15. The fan module according to claim 14, characterized in that a fitting groove is provided around the edge of one of the first ducts and the second duct facing the other, and a fitting edge is provided around the edge of the other duct facing the other, and the fitting edge is fitted into the fitting groove.

16. The fan module according to claim 15, characterized in that the plurality of second wind-cutting blades are arranged parallel to the axis of the second duct and are in a straight line.

17. The ends of the plurality of first air vents that are close to the inner wall of the first duct are provided inclined in a clockwise or counterclockwise direction. The fan module according to claim 15, wherein the wind driving member comprises a motor unit and a blade base, the motor unit is mounted inside the first duct, the blade base is fitted onto the motor unit, a plurality of blades are provided at intervals on the peripheral wall of the blade base, the plurality of blades extend from one side of the blade base to the other side, and the inclination direction of the plurality of blades is opposite to the inclination direction of the first wind cutting blade.

18. The fan module according to claim 17, characterized in that the plurality of first wind-cutting blades are provided inclined in the axial direction of the second duct, and the plurality of blades are provided curved in an arc in the circumferential direction of the blade base.

19. The fan module according to claim 17, characterized in that a first connection base is provided in the first duct, the axis of the first connection base coincides with the axis of the first duct, a plurality of first wind-cutting blades are connected at one end to the first connection base and at the other end to the inner wall of the first duct, and the motor unit is mounted on the side of the first connection base opposite to the second duct.

20. The wind driving member is equipped with a connecting wire, and a wire passage groove is provided in the edge of the first duct facing the second duct or the edge of the second duct facing the first duct. The fan module according to claim 16, characterized in that the connecting wire passes through the first straightening passage from the side of the first wind-cutting blade opposite to the second duct, and is drawn out from the wire passage groove to the outside of the first duct and the second duct.

21. The fan module according to claim 19, characterized in that a second connection base is provided in the second duct, a plurality of second wind-cutting blades are connected at one end to the second connection base and at the other end to the inner wall of the second duct, a fitting groove that fits the second connection base is opened on the side of the first connection base facing the second duct, and the second connection base is fitted into the fitting groove.

22. A fan characterized by comprising the fan module described in any one of claims 1 to 3.

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