fan

Abstract

This utility model relates to the field of fan technology and discloses a fan comprising: a housing, a motor, and an air guide grille; the fan blades include a hub and a plurality of spaced-apart blades, each blade spirally arranged on the surface of the hub along a first direction from one end near the air inlet to the other end away from the air inlet; the air guide grille includes a plurality of air guide plates spaced axially around the fan blades, each air guide plate including a first air guide blade and a second air guide blade spliced ​​together, the first air guide blade being located on the side near the fan blades, and the second air guide blade being located on the side away from the fan blades, each first air guide blade spirally arranged along a second direction from one end near the fan blades to the other end away from the fan blades, the second direction being opposite to the first direction, and each second air guide blade being arranged along an axial direction parallel to the fan blades from one end near the first air guide blades to the other end away from the first air guide blades. This utility model provides a fan with a compact structure, large air volume, high air speed, and low noise.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically to a fan. Background Technology

[0002] Handheld fans need to be portable, so they usually use small motors and fans, resulting in low air volume and low wind speed. In actual use, they cannot quickly and effectively remove heat from the human body surface, and the heat dissipation effect is not ideal. At the same time, handheld fans also have the problem of high noise, which affects the user experience. Utility Model Content

[0003] In view of the above problems, this utility model provides a fan to solve the problems of low air volume, low wind speed and high noise in existing fans.

[0004] This utility model embodiment provides a fan, the fan comprising:

[0005] A housing, wherein an air duct is formed inside the housing, and the surface of the housing has an air inlet and an air outlet respectively communicating with both ends of the air duct;

[0006] The motor is located inside the housing and fixed relative to the housing;

[0007] A fan blade is disposed within the air duct and is connected to the motor for transmission. The air inlet side and air outlet side of the fan blade are located on both sides of the axial direction of the fan blade, respectively. The air inlet is located on one side of the air inlet side of the fan blade, and the air outlet is located on one side of the air outlet side of the fan blade. The fan blade includes a hub and a plurality of spaced blades. Each blade is spirally arranged on the surface of the hub along a first direction from one end near the air inlet to the other end away from the air inlet, around the circumference of the hub.

[0008] An air guide grille is disposed at the air outlet and fixed relative to the housing. The air guide grille includes a plurality of air guide plates arranged axially spaced around the fan blades. Each air guide plate includes a first air guide blade and a second air guide blade spliced ​​together. The first air guide blade is located on the side closer to the fan blades, and the second air guide blade is located on the side farther from the fan blades. Each first air guide blade is spirally arranged along a second direction from the end closer to the fan blades to the end farther from the fan blades. The second direction is opposite to the first direction. Each second air guide blade is arranged along an axial direction parallel to the fan blades from the end closer to the first air guide blades to the end farther from the first air guide blades.

[0009] In one alternative embodiment, the first guide vane includes a first surface facing the second guide vane, and the second guide vane includes a second surface facing the first guide vane, the first surface and the second surface overlapping.

[0010] In one alternative embodiment, the air guide grille further includes a first baffle and a second baffle, wherein the first air guide vane is disposed around the periphery of the first baffle and the second air guide vane is disposed around the periphery of the second baffle.

[0011] In one alternative approach, the cross-sectional area of ​​the first baffle gradually increases from the end facing the fan blade to the end away from the fan blade.

[0012] In one alternative embodiment, a handle is also included, the housing being attached to the handle, and a power source is installed within the handle;

[0013] A first wiring shell is provided between the first baffle and the handle, and a second wiring shell is provided between the second baffle and the handle. The first wiring shell and the second wiring shell are spliced ​​together to form a wiring post, and a wiring groove is passed through the wiring post.

[0014] One end of the wiring channel is connected to the interior of the handle, and the other end is connected to the air duct. The power supply and the motor are electrically connected through wires arranged in the wiring channel.

[0015] In one alternative approach, the cross-sectional area of ​​the first wiring housing gradually increases from the end facing the fan blade to the end away from the fan blade.

[0016] In one alternative embodiment, the second baffle is provided with a receiving groove, in which a cooling component is disposed, and the receiving groove is covered with a temperature-conducting cover for covering the receiving groove, the temperature-conducting cover being thermally connected to the cold end of the cooling component.

[0017] In one alternative embodiment, a heat sink is provided between the first baffle and the second baffle, and the heat sink is thermally connected to the hot end of the cooling component.

[0018] In one alternative embodiment, the radiator is provided with a plurality of spaced-apart cooling fins along the circumferential direction, each of the cooling fins comprising either the first air guide vane or a portion of the second air guide vane.

[0019] In one alternative embodiment, a heat dissipation cavity is formed between the heat sink and the first baffle, and a heat dissipation channel communicating with the heat dissipation cavity and the outside is provided on the first baffle.

[0020] This embodiment of the utility model increases the surface area for the blades and airflow to do work by spirally arranging the fan blades around the hub in a first direction from one end near the air inlet to the other end away from the air inlet. This increases the flow rate of the airflow through the air guide grille and improves the airflow velocity, so that the airflow passing through the air guide grille and flowing out of the air outlet has the characteristics of large volume and high speed.

[0021] Meanwhile, the spiral direction of the first guide vane is opposite to that of the blade, which corrects the airflow when it comes into contact with the surface of the first guide vane, making the airflow more parallel to the axis of the fan blade, reducing turbulence and eddies when the airflow is discharged, reducing energy loss, and further improving the transmission efficiency of the airflow.

[0022] The airflow path is extended by using a second guide vane, which is arranged parallel to the fan blade axis from the end closest to the first guide vane to the end furthest from the first guide vane. This means the airflow direction is parallel to the direction of the airflow corrected by the first guide vane, ensuring smooth airflow perpendicular to the outlet plane. By setting the first and second directions oppositely, the first guide vane corrects the airflow direction to be parallel to the fan axis, while the second guide vane ensures the airflow direction remains constant within the airflow channel formed by two adjacent second guide vanes, avoiding turbulence and eddies, reducing noise, and maximizing airflow efficiency.

[0023] The first and second air guide vanes are spliced ​​together to avoid wind resistance caused by misalignment between them, thereby reducing noise. The second air guide vane expands the vertical diffusion angle of the airflow, preventing the air from being blocked, improving fan efficiency, achieving effective noise reduction, and improving the user experience of the small portable fan.

[0024] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0026] Figure 1 A perspective view of the fan provided in an embodiment of the present invention is shown;

[0027] Figure 2 An exploded view of the fan provided in an embodiment of this utility model;

[0028] Figure 3 A cross-sectional view of a fan provided for an embodiment of this utility model;

[0029] Figure 4A front view of the first grille member in a fan provided in an embodiment of this utility model;

[0030] Figure 5 Rear view of the first grille member in a fan provided in an embodiment of the present utility model;

[0031] Figure 6 A cross-sectional view of the first grille member in a fan provided in an embodiment of the present utility model;

[0032] Figure 7 A perspective view of the second grille component in a fan provided for an embodiment of this utility model;

[0033] Figure 8 A perspective view of the fan blades in a fan provided for an embodiment of this utility model;

[0034] Figure 9 A cross-sectional view of a fan provided for an embodiment of this utility model;

[0035] Figure 10 for Figure 3 Enlarged diagram of point A in the middle.

[0036] The reference numerals in the detailed embodiments are as follows:

[0037] 100. Fan;

[0038] 1. Housing; 11. Air inlet; 12. Air outlet; 13. Air duct; 14. Opening;

[0039] 2. Motor; 21. Control board; 211. Through hole; 22. Transmission component; 23. Winding assembly; 24. Connecting ring;

[0040] 3. Fan blade; 31. Blade; 32. Hub;

[0041] 4. Air guide grille; 41. First grille; 411. First air guide vane; 412. First surface; 413. First baffle; 414. First wiring housing; 415. Heat dissipation channel; 416. Connecting cylinder; 417. Connecting shaft;

[0042] 42. Second grille; 421. Second air guide vane; 422. Second surface; 423. Second baffle; 424. Second wiring housing; 425. Receiving groove; 426. Connector;

[0043] 43. Airflow channel; 44. Cable routing post; 45. Cable routing groove; 46. Heat dissipation cavity; 47. Cavity;

[0044] 5. Handle; 6. Power supply; 7. Cooling component; 8. Temperature-conducting cover; 9. Radiator; 91. Heat dissipation fins. Detailed Implementation

[0045] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0046] Please see Figures 1-10 This utility model embodiment provides a fan 100. The fan 100 includes: a housing 1, a motor 2, and an air guide grille 4. For example... Figure 2 As shown, an air duct 13 is formed inside the housing 1, and the surface of the housing 1 has an air inlet 11 and an air outlet 12 that are respectively connected to both ends of the air duct 13; Figure 3 As shown, the motor 2 is located inside the housing 1 and fixed relative to the housing 1; the fan blade 3 is disposed in the air duct 13 and is connected to the motor 2 for transmission. The air inlet side and air outlet side of the fan blade 3 are respectively located on both sides of the axial direction of the fan blade 3. The air inlet 11 is located on the air inlet side of the fan blade 3, and the air outlet 12 is located on the air outlet side of the fan blade 3. The fan blade 3 includes a hub 32 and a number of spaced blades 31. Each blade 31 is spirally arranged on the surface of the hub 32 along a first direction from one end near the air inlet 11 to the other end away from the air inlet 11. The air guide grille 4 is disposed at the air outlet 12. And fixed relative to the housing 1, the air guide grille 4 includes a number of air guide plates arranged axially spaced around the fan blade 3. Each air guide plate includes a first air guide blade 411 and a second air guide blade 421 spliced ​​together. The first air guide blade 411 is located on the side close to the fan blade 3, and the second air guide blade 421 is located on the side away from the fan blade 3. Each first air guide blade 411 is spirally arranged along a second direction from the end close to the fan blade 3 to the end away from the fan blade 3. The second direction is opposite to the first direction. Each second air guide blade 421 is arranged along an axial direction parallel to the fan blade 3 from the end close to the first air guide blade 411 to the end away from the first air guide blade 411. In this embodiment, the blades 31 of the fan blade 3 are spirally arranged around the hub 32 in a first direction from one end near the air inlet 11 to the other end away from the air inlet 11. This increases the surface area of ​​the blades 31 and the airflow, increases the flow rate of the airflow from the fan blade 3 through the guide grille 4, and increases the airflow velocity. This results in the airflow passing through the guide grille 4 and exiting from the air outlet 12 having the characteristics of large volume and high speed. At the same time, the spiral direction of the first guide vane 411 is opposite to that of the blades 31, which corrects the airflow when it comes into contact with the surface of the first guide vane 411, making the airflow more parallel to the axis of the fan blade 3. This reduces turbulence and eddies when the airflow is discharged, reduces energy loss, and further improves the transmission efficiency of the airflow.

[0047] like Figure 2As shown, the housing 1 is a cylindrical structure with an air duct 13 running through it along its length. An air inlet 11 and an air outlet 12 are located at opposite ends of the housing 1 along its length. Fan blades 3 are positioned inside the housing 1 near the air inlet 11, with the air inlet side of the fan blades 3 connected to the outside via the air inlet 11, and the air outlet side of the fan blades 3 facing the air guide plate. Airflow enters the housing 1 through the air inlet 11 and flows along the air duct 13 within the housing 1. It is drawn in from the air inlet side by the fan blades 3 and blown towards the air guide plate from the air outlet side. The airflow then flows along the air guide plate and exits from the air outlet 12.

[0048] The air guide grille 4 also includes a first baffle 413 and a second baffle 423, such as Figure 4 , Figure 5 ,and Figure 6 As shown, the first guide vane 411 is arranged around the periphery of the first baffle 413, as... Figure 7 As shown, the second guide vane 421 is arranged around the periphery of the second baffle 423.

[0049] The first baffle 413 and the first guide vane 411 form the first grille 41, and the second baffle 423 and the second guide vane 421 form the second grille 42. Each first guide vane 411 is spirally arranged around the circumference of the first baffle 413 in a second direction from one end near the fan blade 3 to the other end away from the fan blade 3. Each second guide vane 421 is arranged along an axial direction parallel to the fan blade from one end near the first guide vane 411 to the other end away from the first guide vane 411. The first guide vane 411 is fixed on the first baffle 413 to support its stability, and the second guide vane 421 is fixed on the second baffle 423 to support its stability, ensuring that the splicing of the first guide vane 411 and the second guide vane 421 will not be misaligned. The first guide vane 411 of the first grille 41 and the second guide vane 421 of the second grille 42 are spliced ​​together to form a guide plate. The second grille 42 is located at one end of the housing 1 near the air outlet 12, and the first grille 41 is located between the fan blade 3 and the second grille 42.

[0050] like Figure 8As shown, the fan blade 3 includes a hub 32 and a plurality of spaced blades 31. The plurality of blades 31 are spaced apart around the circumference of the hub 32 along a first direction. In the axial direction of the fan blade 3, each blade 31 is spirally arranged around the hub 32 from one end near the air inlet 11 to the other end away from the air inlet 11. That is, each blade 31 is curved in the axial direction of the fan blade 3 from one end near the air inlet 11 to the other end away from the air inlet 11, and the curved surface of the blade 31 from one end near the air inlet 11 to the other end away from the air inlet 11 has a deflection angle with the axial direction of the fan blade 3. The deflection direction is the first direction, which is a counterclockwise deflection direction or a clockwise deflection direction around the axis of the hub 32. This embodiment increases the length of the blade 31 from one end near the air inlet 11 to the other end away from the air inlet 11, so that the blade 31 can quickly and effectively cut the airflow when rotating. This significantly increases the contact area between the airflow and the blade 31, providing a wider surface for the blade 31 to do work on the airflow, thereby improving the efficiency of the fan blade 3 in driving the airflow and increasing the air volume and speed of the airflow in the fan 100.

[0051] The motor 2 is connected to the hub 32, which drives the hub 32 to rotate, thereby accelerating and pressurizing the airflow in the air duct 13 and blowing it from the air outlet to several air guide plates. There is an airflow channel 43 between two adjacent air guide plates, and the airflow flows from the airflow channel 43 and flows out from the air outlet 12.

[0052] like Figure 3 As shown, a first guide vane 411 and a second guide vane 421 are joined together to form an air guide plate. The first guide vane 411 is positioned close to the fan blade 3, and the air outlet side of the fan blade 3 faces the first guide vane 411. Each first guide vane 411 is spirally arranged in a second direction from one end close to the fan blade 3 to the other end away from the fan blade 3. When the airflow is inside the fan blade 3, the airflow is directed to the air outlet side by the blades 31. Since the first and second directions are opposite, when the airflow enters the airflow channel 43 formed by the first guide vane 411, the airflow comes into contact with the surface of the first guide vane 411, correcting the direction of the airflow. This causes the airflow to eventually enter the airflow channel 43 formed by the second guide vane 421 with the airflow direction parallel to the axial direction of the fan blade 3. Each second guide vane 421 is arranged parallel to the axial direction of the fan blade 3 from one end near the first guide vane 411 to the other end away from the first guide vane 411. This ensures that when the airflow enters the airflow channel 43 formed by the first guide vane 411, the second guide vane 421 does not change the direction of the airflow. This allows the airflow to flow out of the air outlet 12 along the airflow channel 43 while maintaining a direction perpendicular to the plane of the air outlet 12. The axial direction of the fan blade 3 is perpendicular to the plane of the air outlet 12.

[0053] In this embodiment, the blades 31 of the fan blade 3 are spirally arranged around the hub 32 in a first direction from one end near the air inlet 11 to the other end away from the air inlet 11. This increases the surface area of ​​the blades 31 and the airflow, increases the flow rate of the airflow through the guide grille 4, and improves the airflow velocity. This results in the airflow passing through the guide grille 4 and exiting the outlet 12 having both large volume and high speed. Simultaneously, the first guide vane 411 has a spiral direction opposite to that of the blades 31, which corrects the airflow upon contact with the surface of the first guide vane 411, making the airflow more parallel to the axial direction of the fan blade 3. This reduces turbulence and eddies during airflow exit, lowers energy loss, and further improves airflow transmission efficiency. The second guide vane 421 is arranged parallel to the axial direction of the fan blade 3 from one end near the first guide vane 411 to the other end away from the first guide vane 411, further correcting the airflow after it has been corrected by the first guide vane 411, ensuring that the airflow can smoothly exit the outlet 12 perpendicularly to the plane of the outlet 12. With the first and second directions reversed, when the hub 32 rotates around its central axis with the blades 31, the airflow flows along the blades 31 from the side connected to the hub 32 toward the curved surface away from the hub 32, exiting from the outlet between two adjacent blades 31, and then flows from the air outlet side of the fan blade 3 toward the first guide vane 411. The airflow contacts the surface of the first guide vane 411, correcting the flow direction of the airflow to be parallel to the axis of the fan 100. The second guide vane 421 is arranged parallel to the axis of the fan blade 3 from one end close to the first guide vane 411 to the other end away from the first guide vane 411, so that the airflow can maintain a constant flow direction within the airflow channel 43 formed by two adjacent second guide vanes 421, avoiding the generation of turbulence and eddies, reducing noise, and maximizing airflow efficiency. The second guide vane 421 extends the airflow path. At the same time, the first guide vane 411 and the second guide vane 421 are spliced ​​together to avoid the wind resistance caused by the misalignment between the first guide vane 411 and the second guide vane 421, thereby reducing noise. The second guide vane 421 expands the vertical diffusion angle of the air outlet, avoids the wind being blocked, improves the efficiency of the fan 100, achieves effective noise reduction, and improves the user experience of the small portable fan 100.

[0054] In one implementation of this embodiment, such as Figure 4 As shown, the first guide vane 411 includes a first surface 412 facing the second guide vane 421, such as Figure 7As shown, the second guide vane 421 includes a second surface 422 facing the first guide vane 411, and the first surface 412 and the second surface 422 overlap each other. The overlap of the first surface 412 and the second surface 422 allows them to fit together completely when spliced, making the surface of the guide plate formed by splicing the first guide vane 411 and the second guide vane 421 smooth. This prevents the guide plate from changing the airflow direction due to unevenness, and also prevents the airflow from flowing rapidly between uneven guide plates and generating noise. This improves the smoothness of the airflow in the airflow channel 43, reduces noise, and enhances the user experience.

[0055] In another implementation of this embodiment, such as Figure 4 , Figure 5 ,and Figure 6 As shown, the first air guide grille 4 also includes a connecting cylinder 416, which extends longitudinally along the axial direction of the fan 100. The first air guide blade 411 and the first baffle 413 are installed inside the connecting cylinder 416, and the end of the first air guide blade 411 away from the first baffle 413 is fixedly connected to the inner wall of the connecting cylinder 416. The connecting cylinder 416 is disposed within and fixedly connected to the housing 1. Inside the connecting cylinder 416, the fan blade 3 is disposed at the end near the air inlet 11, and the second grille 42 is disposed at the other end away from the air inlet 11. Figure 7 As shown, the second grille 42 also includes a connector 426, which is an annular structure. The second baffle 423 and the second guide vane 421 are located in the middle of the connector 426, and the end of the second guide vane 421 away from the second baffle 423 is fixedly connected to the connector 426. Figure 3 As shown, the connector 426 is located at the port of the connecting cylinder 416 and is fixedly connected to the connecting cylinder 416, so as to realize the stable connection between the second grille 42 and the first grille 41, ensuring that the first surface 412 and the second surface 422 can still fit tightly when the fan 100 vibrates during use, and avoiding misalignment of the splicing of the first guide vane 411 and the second guide vane 421.

[0056] In one implementation of this embodiment, such as Figure 6 As shown, the cross-sectional area of ​​the first baffle 413 gradually increases from the end facing the fan blade 3 to the end away from the fan blade 3. That is, the circumferential dimension of the first baffle 413 gradually increases along the flow direction of the airflow within the airflow channel 43. The internal dimensions of the connecting cylinder 416 remain unchanged. As the circumferential dimension of the first baffle 413 gradually increases along the flow direction of the airflow, the distance between the inner wall of the connecting cylinder 416 and the circumferential surface of the first baffle 413 decreases, and the airflow channel 43 narrows accordingly. When the airflow flows along the airflow channel 43 of the first guide vane 411, the narrowing of the airflow channel 43 increases the airflow velocity, further increasing the airflow speed.

[0057] In this embodiment, as Figure 3 As shown, the fan 100 also includes a handle 5, the housing 1 is connected to the handle 5, and a power supply 6 is installed inside the handle 5; as Figure 9 As shown, a first cable tray 414 is provided between the first baffle 413 and the handle 5, and a second cable tray 424 is provided between the second baffle 423 and the handle 5. The first cable tray 414 and the second cable tray 424 are spliced ​​together to form a cable tray post 44. A cable tray groove 45 passes through the cable tray post 44. One end of the cable tray 45 is connected to the inside of the handle 5, and the other end is connected to the air duct 13. The power supply 6 and the motor 2 are electrically connected through wires arranged in the cable tray 45.

[0058] By setting a first wiring shell 414 on the first baffle 413 and a second wiring shell 424 on the second baffle 423, the first wiring shell 414 and the second wiring shell 424 are spliced ​​together to form a wiring post 44. The lower end of the wiring groove 45 is connected to the inside of the handle 5, and the upper end of the wiring groove 45 in the wiring post 44 is connected to the air duct 13, so that the wires are placed in the wiring groove 45. The two ends of the wires are electrically connected to the power supply 6 in the handle 5 and to the motor 2 in the air duct 13, respectively, ensuring that the wires are placed in an orderly manner in the fan 100. By setting the wiring post 44, the battery in the handle 5 and the motor 2 in the air duct 13 are electrically connected, avoiding the increase in the size of the housing 1 caused by placing the power supply 6 of the fan 100 in the air duct 13, which would affect the airflow in the air duct 13. This achieves a miniaturized structure while ensuring the air delivery of the fan 100.

[0059] The top of the handle 5 is fixedly connected to the bottom of the housing 1. The handle 5 has a hollow interior cavity with the opening facing the housing 1. The power supply 6 is installed in the interior cavity. An opening 14 is provided at the bottom of the housing 1, and the interior cavity of the handle 5 and the housing 1 are connected through the opening 14 and the cavity opening. The bottom end of the wiring groove 45 is connected to the interior cavity of the handle 5 through the opening 14. One end of the wire is electrically connected to the power supply 6, and the other end passes through the cavity opening, passes through the opening 14 and the wiring groove 45, and is then electrically connected to the motor 2 to provide power for the rotation of the fan 100.

[0060] In one implementation of this embodiment, such as Figure 5 As shown, the cross-sectional area of ​​the first wiring shell 414 gradually increases from the end facing the fan blade 3 to the end away from the fan blade 3. The first wiring shell 414 and the second wiring shell 424 are spliced ​​together to form a wiring post 44. The surface of the wiring post 44 that contacts the airflow is smooth, so that the airflow will not be affected when it contacts the surface of the wiring post 44. The thickness of the side of the first wiring shell 414 near the air outlet side of the fan blade 3 is smaller, so that the airflow discharged from the fan blade 3 can be quickly cut into different airflow channels 43 when it contacts the side of the first wiring shell 414, thus avoiding the first wiring shell 414 from obstructing the flow of airflow.

[0061] In one implementation of this embodiment, such as Figure 7 As shown, the second baffle 423 is provided with a receiving groove 425, such as Figure 3 As shown, a cooling component 7 is installed inside the receiving slot 425. A temperature-conducting cover 8 is provided on the top of the receiving slot 425 to cover it. The temperature-conducting cover 8 is thermally connected to the cold end of the cooling component 7. The receiving slot 425 is installed through the second baffle 423 in the axial direction of the fan blade 3. The temperature-conducting cover 8 is placed on the side of the cooling component 7 away from the first baffle 413. The temperature-conducting cover 8 is thermally connected to the cold end of the refrigerant, so that the temperature of the temperature-conducting cover 8 can be reduced rapidly. The temperature-conducting cover 8 is placed at the air outlet 12, so that the user's skin can directly contact the surface of the temperature-conducting cover 8 for rapid cooling of the human skin.

[0062] like Figure 3 As shown, a radiator 9 is provided between the first baffle 413 and the second baffle 423, and the radiator 9 is thermally connected to the hot end of the cooling component 7. The radiator 9 and the hot end of the cooling component 7 are thermally connected, and the radiator 9 absorbs the heat on the cooling component 7, preventing the temperature of the hot end of the cooling component 7 from rising and affecting the cooling effect of the cold end of the cooling component 7.

[0063] like Figure 9 As shown, the radiator 9 is provided with a plurality of spaced-apart cooling fins 91 along its circumference. Each cooling fin 91 constitutes a first air guide vane 411 or a portion of a second air guide vane 421. The radiator 9 is positioned between the first baffle 413 and the second baffle 423. To ensure that the first air guide vane 411 and the second air guide vane 421 can fit together tightly, cooling fins 91 are arranged circumferentially on the radiator 9, making the cooling fins 91 part of the air guide plate, ensuring smooth airflow within the airflow channel 43 between the two air guide plates. When the cooling fin 91 constitutes the first air guide vane 411, each cooling fin 91 is spirally arranged along a second direction from one end near the fan blade 3 to the other end away from the fan blade 3. The first surface 412 is located at the end of the cooling fin 91 near the second air guide vane 421, and the first surface 412 is in contact with the second surface 422 of the second air guide vane 421. When the heat dissipation fin 91 forms part of the second air guide vane 421, each heat dissipation fin 91 is arranged along an axial direction parallel to the fan blade 3 from one end near the first air guide vane 411 to the other end away from the first air guide vane 411. The second surface 422 is disposed at the end of the heat dissipation fin 91 near the first air guide vane 411, and the second surface 422 is in contact with the first surface 412 of the first air guide vane 411. Similarly, the heat dissipation fin 91 located between the first wiring shell 414 and the second wiring shell 424 forms part of the first wiring shell 414 or part of the second wiring shell 424.

[0064] This embodiment achieves rapid cooling of the skin through the heat-conducting cover 8 and the cooling component 7. The heat sink 9 is designed to prevent the temperature of the hot end of the cooling component 7 from rising. Heat dissipation fins 91 are arranged around the heat sink 9 to form part of the first air guide 411 or part of the second air guide 421. This ensures that after the heat sink 9 is installed between the first baffle 413 and the second baffle 423, the splicing between the first air guide 411 and the second air guide 421 is tight and without misalignment, ensuring smooth airflow on the air guide plate.

[0065] In one implementation of this embodiment, as shown in 9, a heat dissipation cavity 46 is formed between the heat sink 9 and the first baffle 413, and a heat dissipation channel 415 connecting the heat dissipation cavity 46 and the outside is provided on the first baffle 413.

[0066] The side of the first baffle 413 closest to the second baffle 423 is recessed away from the second baffle 423. When the first baffle 413 and the radiator 9 are connected in close contact, a heat dissipation cavity 46 is formed between the radiator 9 and the first baffle 413. The upper end of the wiring groove 45 is connected to the heat dissipation cavity 46. A heat dissipation channel 415 is provided in the second baffle 423. The heat dissipation channel 415 passes through the second baffle 423 in the axial direction of the fan 100. The heat dissipation cavity 46 is connected to the air duct 13 of the housing 1 through the heat dissipation channel 415. The air duct 13 is connected to the outside through the air inlet 11 and the air outlet 12, so that the heat on the radiator 9 can be dissipated to the outside through the heat dissipation channel 415, thereby achieving the cooling of the radiator 9.

[0067] A wiring channel 45 passes through the heat sink 9, connecting the heat dissipation cavity 46 and the receiving slot 425. The wires electrically connected to the power supply 6 pass through the wiring channel 45 into the receiving slot 425, and then connect to the cooling component 7 via the wiring channel 45. The wires are positioned between the first baffle 413 and the second baffle 423 to prevent them from obstructing airflow within the airflow channel 43.

[0068] In one implementation of this embodiment, such as Figure 6 As shown, the first baffle 413 has a cavity 47 on the side away from the second baffle 423, and the opening of the cavity 47 is aligned with the side of the hub 32; a connecting shaft 417 is provided at the bottom of the cavity 47, one end of the connecting shaft 417 is connected to the first baffle 413, and the other end extends along the axial direction of the fan 100 towards the hub 32, and the interior of the connecting shaft 417 is arranged through the fan blade 3 along the axial direction. Figure 10The motor 2 includes a control board 21, a transmission component 22, and a winding assembly 23 surrounding the transmission component 22. The motor 2 is disposed inside the hub 32, and the transmission component 22 of the motor 2 is connected to the hub 32 at one end near the air inlet 11. The control board 21 is disposed between the hub 32 and the cavity of the second baffle 423. The control board 21 has a through hole 211 in the middle. The circumferential surface of the transmission component 22 and the inner wall of the winding assembly 23 are spaced apart to form an annular gap.

[0069] When assembling the fan blade 3, motor 2, and first grille 41, the connecting shaft 417 passes through the through hole 211 of the control plate 21 and is embedded in the annular gap of the winding assembly 23. The transmission component 22 is placed inside the connecting shaft 417. The transmission component 22 is tightly fixedly connected to the inner wall of the connecting shaft 417 through the connecting ring 24. The connecting shaft 417 is sleeved on the transmission component 22. The winding assembly 23 includes multiple windings arranged around the transmission component 22. When the windings are energized, they generate a magnetic field, which controls the rotation of the transmission component 22. The transmission component 22 and the connecting ring 24 are movably sleeved. When the transmission component 22 rotates, the connecting ring 24 remains stable, so that the first baffle 413 remains stable. The transmission component 22 is connected to the hub 32, so that the hub 32 rotates around the axis of the fan blade 3 under the drive of the transmission component 22. Motor 2 and fan blade 3 are connected to the first grille 41 via connecting shaft 417, and the second grille 42 is connected to the first grille 41. The first grille 41 is fixed inside the housing 1 via connecting cylinder 416, thereby fixing the air guide grille 4, motor 2, fan blade 3 and housing 1. The connecting shaft 417 and the connecting ring 24 of motor 2 are tightly fixed together, so that fan blade 3 is suspended in the air duct 13 inside the housing 1, so that hub 32 can rotate at high speed under the action of motor 2.

[0070] In another implementation of this embodiment, such as Figure 9 As shown, the heat dissipation cavity 46 is connected to the cavity 47 through the heat dissipation channel 415. One end of the wire is electrically connected to the power supply 6 inside the handle 5, and the other end passes through the wiring hole, wiring channel 45, heat dissipation cavity 46, heat dissipation channel 415, and cavity 47 sequentially from the upper end of the wiring groove 45, and is electrically connected to the control board 21 between the first baffle 413 and the hub 32. The control board 21 is electrically connected to the winding assembly 23. When the coils on each winding are energized, they form a magnetic field. Under the action of the magnetic field, the transmission component 22 rotates around its axis to drive the fan blade 3 to rotate at high speed. Arranging the wire in the wiring groove 45, heat dissipation cavity 46, heat dissipation channel 415, and cavity 47 separates the airflow from the wire, preventing the wire from obstructing the airflow from the first guide vane 411 to the second guide vane 421, ensuring smooth airflow and avoiding noise caused by airflow colliding with the wire.

[0071] This embodiment of the utility model increases the surface area of ​​the blades 31 and the airflow doing work by spirally arranging the blades 31 of the fan blade 3 around the hub 32 in a first direction from one end near the air inlet 11 to the other end away from the air inlet 11. This increases the flow rate of the airflow from the fan blade 3 through the air guide grille 4 and improves the airflow velocity, so that the airflow passing through the air guide grille 4 and flowing out of the air outlet 12 has the characteristics of large volume and high speed.

[0072] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0073] In the description of this embodiment of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0074] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0075] In the description of this embodiment of the invention, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0076] In the description of this embodiment of the invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fan, characterized by, The fan includes: A housing, wherein an air duct is formed inside the housing, and the surface of the housing has an air inlet and an air outlet respectively communicating with both ends of the air duct; The motor is located inside the housing and fixed relative to the housing; A fan blade is disposed within the air duct and is connected to the motor for transmission. The air inlet side and air outlet side of the fan blade are located on both sides of the axial direction of the fan blade, respectively. The air inlet is located on one side of the air inlet side of the fan blade, and the air outlet is located on one side of the air outlet side of the fan blade. The fan blade includes a hub and a plurality of spaced blades. Each blade is spirally arranged on the surface of the hub along a first direction from one end near the air inlet to the other end away from the air inlet, around the circumference of the hub. An air guide grille is disposed at the air outlet and fixed relative to the housing. The air guide grille includes a plurality of air guide plates arranged axially spaced around the fan blades. Each air guide plate includes a first air guide blade and a second air guide blade spliced ​​together. The first air guide blade is located on the side closer to the fan blades, and the second air guide blade is located on the side farther from the fan blades. Each first air guide blade is spirally arranged along a second direction from the end closer to the fan blades to the end farther from the fan blades. The second direction is opposite to the first direction. Each second air guide blade is arranged along an axial direction parallel to the fan blades from the end closer to the first air guide blades to the end farther from the first air guide blades.

2. The fan according to claim 1, characterized in that, The first guide vane includes a first surface facing the second guide vane, and the second guide vane includes a second surface facing the first guide vane, with the first surface and the second surface overlapping each other.

3. The fan according to claim 1 or 2, characterized in that, The air guide grille also includes a first baffle and a second baffle, with the first air guide vane arranged around the periphery of the first baffle and the second air guide vane arranged around the periphery of the second baffle.

4. The fan according to claim 3, characterized in that, The cross-sectional area of ​​the first baffle gradually increases from the end facing the fan blade to the end away from the fan blade.

5. The fan according to claim 4, characterized in that, It also includes a handle, the housing is connected to the handle, and a power source is installed inside the handle; A first wiring shell is provided between the first baffle and the handle, and a second wiring shell is provided between the second baffle and the handle. The first wiring shell and the second wiring shell are spliced ​​together to form a wiring post, and a wiring groove is passed through the wiring post. One end of the wiring channel is connected to the interior of the handle, and the other end is connected to the air duct. The power supply and the motor are electrically connected through wires arranged in the wiring channel.

6. The fan according to claim 5, characterized in that, The cross-sectional area of ​​the first wiring housing gradually increases from the end facing the fan blade to the end away from the fan blade.

7. The fan according to claim 3, characterized in that, The second baffle is provided with a receiving groove, in which a cooling component is disposed. The upper cover of the receiving groove is provided with a temperature-conducting cover for covering the receiving groove, and the temperature-conducting cover is thermally connected to the cold end of the cooling component.

8. The fan according to claim 7, characterized in that, A radiator is provided between the first baffle and the second baffle, and the radiator is thermally connected to the hot end of the cooling component.

9. The fan according to claim 8, characterized in that, The radiator is provided with a number of spaced-apart heat dissipation fins along the circumference, and each heat dissipation fin is a component of the first air guide vane or a part of the second air guide vane.

10. The fan according to claim 7, characterized in that, A heat dissipation cavity is formed between the radiator and the first baffle, and a heat dissipation channel connecting the heat dissipation cavity and the outside is provided on the first baffle.

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