fan

Abstract

A fan includes a fan housing, a fan blade, a motor, an air inlet cover and an air outlet cover, the fan housing includes a ringed wall structure, a connecting portion, a plurality of first air outlet panels connecting between an inner side of the wall structure and the connecting portion; the fan blade is located in a cavity surrounded by the wall structure; the motor is connected to the fan blade; the air inlet cover is connected to an air inlet side of the wall structure and has at least one air inlet; the air outlet cover is connected to an air outlet side of the wall structure and includes a base connected to the connecting portion and a plurality of second air outlet panels connected to a periphery of the base in a ringed manner, the plurality of first air outlet panels and the plurality of second air outlet panels form a plurality of air guide structures along corresponding connections, an air outlet is formed between two adjacent air guide structures, and each air guide structure is used for gradually guiding rotating air from the fan blade to a straight blowing direction, so that air along the straight blowing direction is blown out from the air outlet.

Description

Technical Field

[0001] This application relates to the field of fan technology, and in particular to a fan. Background Technology

[0002] In recent years, people have increasingly pursued a more convenient lifestyle. To meet the demand for fans during outdoor activities or other daily life scenarios, various types of fans have emerged on the market, such as desktop fans, floor fans, ceiling fans, handheld fans, neck fans, clip fans, and folding fans. Among them, portable fans are finding increasingly diverse applications. However, existing small fans have relatively low airflow efficiency and slow cooling speed, resulting in a poor user experience, which necessitates improvement. Utility Model Content

[0003] The main purpose of this application is to propose a fan with higher air output efficiency, aiming to solve the above-mentioned problems.

[0004] To achieve the above objectives, this application provides a fan comprising a fan housing, fan blades, a motor, an air inlet shroud, and an air outlet shroud. The fan housing includes a surrounding wall structure, a connecting portion, and a plurality of first air outlet baffles connecting the inner side of the surrounding wall structure and the connecting portion. The fan blades are located within a cavity enclosed by the surrounding wall structure. The motor is connected to the fan blades. The air inlet shroud is connected to the air inlet side of the surrounding wall structure and has at least one air inlet. The air outlet shroud is connected to the air outlet side of the surrounding wall structure and includes a base connected to the connecting portion and a plurality of second air outlet baffles surrounding and connected to the periphery of the base. The plurality of first air outlet baffles and the plurality of second air outlet baffles are connected in a corresponding manner to form a plurality of air guiding structures. An air outlet is formed between two adjacent air guiding structures. Each air guiding structure is used to gradually guide the rotating air from the fan blades toward a direct blowing direction, thereby blowing air out of the air outlet along the direct blowing direction.

[0005] Compared with existing technologies, the fan provided in this embodiment forms the air guiding structure by correspondingly connecting the plurality of first air outlet plates and the plurality of second air outlet plates. This guides the rotating air from the fan blades towards the direct blowing direction, thereby blowing air out from the air outlet along the direct blowing direction. This makes the airflow from the fan more concentrated and blows directly onto the user, achieving a rapid cooling effect, thus improving the fan's airflow efficiency and providing a better user experience. Furthermore, it can be understood that setting the connecting part to connect the plurality of first air outlet plates can improve the structural strength of the fan housing and increase the yield rate of the one-piece molding of the fan housing.

[0006] In one embodiment, the connecting portion includes a hollow connecting ring, and the end face of the plurality of first air outlet baffles away from the enclosure structure and close to the air inlet side of the enclosure structure is connected to the connecting ring, and the end face also abuts against the base; the motor is fixed to the base via the connecting ring; the enclosure structure, the connecting portion, and the plurality of first air outlet baffles are integrally formed structures.

[0007] It is understandable that the above-mentioned structure can also increase the compactness of the assembly, which is beneficial to the miniaturization and weight reduction of the fan.

[0008] In one embodiment, the air outlet hood further includes a first fixing ring, which is fixed to the side of the plurality of first air outlet baffles away from the base; the first fixing ring, the base, and the plurality of second air outlet baffles are integrally formed; the inner diameter of the first fixing ring gradually decreases along the direction from the air inlet side to the air outlet side to pressurize the air outlet. It can be understood that the first fixing ring can also increase structural strength and improve the molding yield of the air outlet hood. The gradual decrease in the inner diameter of the first fixing ring along the direction from the air inlet side to the air outlet side to pressurize the air outlet can also improve the blowing intensity.

[0009] In one embodiment, the motor is mounted on the side of the base near the fan blades and located between the base and the fan blades; the fan blades have a base and a plurality of blades connecting the base, the base having a mounting groove, and the motor is at least partially located in the mounting groove. By mounting the motor on the side of the base near the fan blades and accommodating it in the mounting groove of the base of the fan blades, the stability of the motor installation is improved, and it does not interfere with the connection of the plurality of first air outlet plates and the plurality of second air outlet plates, making the fan structure more compact and safer.

[0010] In one embodiment, the substrate includes an outer surface away from the fan blades, an air inlet surface near the fan blades, and a mounting surface connecting the center of the air inlet surface. The distance between the air inlet surface and the enclosure structure gradually decreases along the direction from the air inlet side to the air outlet side, thereby pressurizing the rotating air from the fan blades. A plurality of second air outlet baffles are arranged and connected to the air inlet surface. By setting the distance between the air inlet surface and the enclosure structure to gradually decrease along the direction from the air inlet side to the air outlet side, the rotating air from the fan blades is gradually compressed along the direction from the air inlet side to the air outlet side, thereby pressurizing the rotating air from the fan blades, resulting in faster wind speed, lower air outlet temperature, and higher air outlet efficiency of the fan.

[0011] In one embodiment, the mounting surface is provided with a mounting structure, and the motor is mounted on the mounting structure. The mounting surface includes a recessed portion, and the mounting structure includes a mounting post connecting the bottom surface of the recessed portion. The motor is sleeved around the mounting post. The outer surface is a recessed surface facing the air inlet side, used to converge the air from the air outlet. The motor includes a motor shaft, a winding sleeved around the motor shaft, and a magnetic ring sleeved around the winding. By setting the outer surface to a recessed surface facing the air inlet side, the air entering the fan from the air inlet gradually converges along the recessed surface to the air outlet between the air guide structures, making the airflow more concentrated and increasing the air volume. This allows the fan to quickly cool the user, resulting in a better user experience.

[0012] In one embodiment, the fan further includes a cover plate covering the outer surface and forming a receiving cavity with the outer surface; the fan also includes a cooling element and / or at least one magnetic element, the cooling element being used for cooling to reduce the temperature of the fan's outlet side, and the at least one magnetic element being arranged around a preset center and used to magnetically fix the fan to an external object; the number of the at least one magnetic element is multiple, and the multiple magnetic elements are arranged sequentially along the circumferential direction; by installing the cooling element, the outlet temperature of the fan can be lowered, thereby achieving the purpose of rapid cooling and a better user experience. In addition, the magnetic element allows the fan to be magnetically fixed to an external object, expanding the application range of the fan and increasing the product's competitiveness.

[0013] In one embodiment, the fan further includes a circuit board, the cooling element is electrically connected to the circuit board via a wire passing through the substrate, the circuit board is disposed in the recessed portion and sleeved around the mounting post, and the motor is fixed to the circuit board. By disposing of the circuit board in the recessed portion and sleeved around the mounting post, the installation of the circuit board can be made more stable and secure.

[0014] In one embodiment, a plurality of first air outlet baffles and a plurality of second air outlet baffles are respectively connected to each other, and each first air outlet baffle is connected to the side of the corresponding second air outlet baffle near the fan blade. The first air outlet baffle is used to guide the rotating air from the fan blade toward the direct blowing direction, and the second air outlet baffle is used to further guide the air guided by the first air outlet baffle toward the direct blowing direction.

[0015] In one embodiment, each of the first air outlet baffles is arc-shaped, and the arc forms an acute angle with the direction of the rotation axis of the fan blade; each of the second air outlet baffles is straight, and each of the second air outlet baffles extends along the direction of the rotation axis of the fan blade. This configuration minimizes airflow loss, ensuring that airflow and air speed are not reduced, thereby improving the fan's airflow efficiency.

[0016] In one embodiment, the fan further includes an air guide located within the housing and at least partially covering the periphery of the fan blades. The air guide includes an annular wall structure, the inner diameter of at least a portion of which gradually increases from the air inlet side to the air outlet side. The annular wall structure includes a first enclosure wall and a second enclosure wall connecting the first enclosure wall to the side near the fan blades, the inner diameter of the second enclosure wall gradually increasing from the air inlet side to the air outlet side. The fan further includes a second fixing ring disposed on the side of the air inlet cover away from the air guide. The at least one air inlet includes multiple air holes, which are circular, square, or hexagonal. By providing the air guide, and ensuring that the inner diameter of at least a portion of the annular wall structure of the air guide gradually increases from the air inlet side to the air outlet side, air can be guided into the fan. Furthermore, the multiple air holes at the at least one air inlet ensure sufficient airflow while preventing foreign objects such as hair and dust from entering the fan, thus ensuring the safety of the fan during operation.

[0017] In one embodiment, the fan is a handheld fan with a handle or a desktop fan with a base. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a perspective view of the fan according to the first embodiment of this application.

[0020] Figure 2 This is a perspective view of the fan from another angle in the first embodiment of this application.

[0021] Figure 3 This is an exploded view of the fan according to the first embodiment of this application.

[0022] Figure 4 This is an exploded view of the fan from another angle in the first embodiment of this application.

[0023] Figure 5 This is a partial cross-sectional view of the fan according to the first embodiment of this application.

[0024] Figure 6 This is a cross-sectional view of the fan according to the first embodiment of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] The terms "first," "second," and "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects and not to describe a specific order. Furthermore, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0029] Please see Figures 1 to 6As shown, the first embodiment of this application provides a fan 100, which includes a fan housing 1, fan blades 2, motor 7, air inlet cover 30 and air outlet cover 40. The fan housing 1 includes a surrounding wall structure 101, a connecting portion 103, and a plurality of first air outlet baffles 102 connecting the inner side of the surrounding wall structure 101 and the connecting portion 103; the fan blade 2 is located in the cavity enclosed by the surrounding wall structure 101; the motor 7 is connected to the fan blade 2; the air inlet shroud 30 is connected to the air inlet side 3 of the surrounding wall structure 101 and has at least one air inlet 31; the air outlet shroud 40 is connected to the air outlet side of the surrounding wall structure 101 and includes a base 41 and a plurality of second air outlet baffles 45 surrounding the periphery of the base 41. The plurality of first air outlet baffles 102 and the plurality of second air outlet baffles 45 are connected in a corresponding manner to form a plurality of air guide structures 5. An air outlet 6 is formed between two adjacent air guide structures 5. Each air guide structure 5 is used to guide the rotating air from the fan blade 2 gradually toward the direct blowing direction, so that the air blown out from the air outlet 6 along the direct blowing direction.

[0030] It is understandable that various types of fans currently on the market, such as desktop fans, floor fans, handheld fans, neck fans, clip fans, and folding fans, generally have an air outlet cover on the air outlet side of their fan blades. These air outlet covers typically have protective guardrails that cut off the fan's airflow, causing the airflow to be dispersed, resulting in lower airflow efficiency and poor cooling effect. In this embodiment, the fan 100 has a fan housing 1 with multiple first air outlet guardrails 102 connected to the inner side of the enclosure structure 101, and the air outlet cover 40 has a second air outlet guardrail 102 surrounding the base 41. The fan 100 has a fan guard plate 45. Simultaneously, the plurality of first air outlet guard plates 102 and the plurality of second air outlet guard plates 45 are connected in a corresponding manner to form a plurality of air guide structures 5. An air outlet 6 is formed between two adjacent air guide structures 5. The air outlet 6 is arranged around the air outlet side of the fan 100, and each air guide structure 5 can gradually guide the rotating air from the fan blades 2 towards the direct blowing direction, thereby blowing air out from the air outlet 6 along the direct blowing direction. This ensures that the air outlet of the fan 100 is directly facing the user, making the airflow more concentrated and stronger, thus resulting in a better cooling effect for the fan 100. The multiple first air outlet baffles 102 and the multiple second air outlet baffles 45 are connected to form the air guide structure 5, thereby guiding the rotating air from the fan blades 2 towards the direct blowing direction, so that the air is blown out from the air outlet 6 along the direct blowing direction, making the air output of the fan 100 more concentrated and blowing directly to the user, achieving a rapid cooling effect, thereby improving the air output efficiency of the fan 100 and providing a better user experience.

[0031] Specifically, by setting the connecting part 103 to connect multiple first air outlet plates 102, the structural strength of the fan housing 1 can be improved, and the yield of the integral molding of the fan housing 1 can be improved.

[0032] In this embodiment, the connecting part 103 includes a hollow connecting ring 103a. The end face 103b of the plurality of first air outlet plates 102, away from the enclosure structure 101 and close to the air inlet side of the enclosure structure 101, is connected to the connecting ring 103a. The end face 103b also abuts against the base 41. It can be understood that the above structure can also increase the compactness of the assembly, which is beneficial to the miniaturization and weight reduction of the fan.

[0033] The motor 7 is fixed to the base 41 via the hollow area of ​​the connecting ring 103a; the enclosure structure 101, the connecting part 103, and the plurality of first air outlet panels 102 are integrally formed, which also facilitates component integration and reduces assembly costs.

[0034] Furthermore, the air outlet hood 40 also includes a first fixing ring 11, which is fixed to the side of the plurality of first air outlet baffles 102 away from the base; the first fixing ring 11, the base 41, and the plurality of second air outlet baffles 45 are integrally formed. It can be understood that the first fixing ring 11 can also increase the structural strength and improve the molding yield of the air outlet hood 40.

[0035] Furthermore, the inner diameter of the first fixing ring 11 gradually decreases along the direction D1 from the air inlet side to the air outlet side (which is also the direction of the rotation axis of the fan blade 2) to pressurize the air outlet and increase the air outlet intensity.

[0036] Specifically, the fan 100 also includes a motor 7, which is mounted on the side of the base 41 near the fan blade 2 and located between the base 41 and the fan blade 2. The fan blade 2 has a base 201 and a plurality of blades 202 connecting the base 201. The base 201 has a mounting groove 203, and the motor 7 is at least partially located in the mounting groove 203. By mounting the motor 7 on the side of the base 41 near the fan blade 2 and accommodating it in the mounting groove 203 of the base 201 of the fan blade 2, the stability of the motor 7 installation is improved, and it does not interfere with the connection of the plurality of first air outlet plates 102 and the plurality of second air outlet plates 45, making the structure of the fan 100 more compact and safer.

[0037] The base 41 includes an outer surface 42 away from the fan blade 2, an air inlet surface 43 close to the fan blade 2, and a mounting surface 44 connecting the center of the air inlet surface 43. The distance between the air inlet surface 43 and the enclosure structure 101 gradually decreases along the direction from the air inlet side 3 to the air outlet side, thereby pressurizing the rotating air from the fan blade 2. A plurality of second air outlet baffles 45 are arranged and connected to the air inlet surface 43. It can be understood that the distance between the air inlet surface 43 and the enclosure structure 101 gradually decreases along the direction from the air inlet side 3 to the air outlet side, so that the rotating air from the fan blade 2 is gradually compressed along the direction from the air inlet side 3 to the air outlet side, thereby pressurizing the rotating air from the fan blade 2, resulting in a faster wind speed, a lower air outlet temperature, and a higher air outlet efficiency of the fan 100.

[0038] The mounting surface 44 is provided with a mounting structure 441, and the motor 7 is mounted on the mounting structure 441; the mounting surface 44 includes a groove 442, and the mounting structure 441 includes a mounting post 443 connecting the bottom surface of the groove 442, and the motor 7 is sleeved around the mounting post 443; the outer surface 42 is a groove surface 421 recessed towards the air inlet side 3, used to gather the air from the air outlet 6; the motor 7 includes a motor shaft 71, a winding 72 sleeved around the motor shaft 71, and a magnetic ring 73 sleeved around the winding 72. It can be understood that the outer surface 42 is a groove surface 421 recessed towards the air inlet side 3. The air entering the fan 100 from the air inlet 31 gradually converges along the groove surface 421 to the air outlet 6 between the air guide structures 5, making the air volume more concentrated and increasing the air volume. At the same time, it is gradually compressed along the air inlet side 3 to the air outlet side, thereby pressurizing the air and blowing it out. After convergence and pressurization, the air volume of the air outlet is larger and the wind speed is faster, so that the fan 100 can quickly cool down the user and make the user experience better.

[0039] The fan 100 further includes a cover plate 8, which covers the outer surface 42 and forms a receiving cavity 81 with the outer surface 42. The fan 100 also includes a cooling element 9 and / or at least one magnetic element 10. The cooling element 9 is used for cooling to reduce the temperature of the air outlet side of the fan 100. The at least one magnetic element 10 is arranged around a preset center and is used to magnetically fix the fan 100 to an external object. The number of the at least one magnetic element 10 is multiple, and the multiple magnetic elements 10 are arranged sequentially along the circumferential direction. By installing the cooling element 9, the air outlet temperature of the fan 100 can be lowered, thereby achieving the purpose of rapid cooling and a better user experience. In addition, the magnetic element 10 allows the fan 100 to be magnetically fixed to an external object, expanding the application range of the fan 100 and increasing the competitiveness of the product. It is understood that in other embodiments, the cooling element 9 and the magnetic element 10 may also be omitted, and are not limited to the above embodiments.

[0040] The fan 100 also includes a circuit board 12. The cooling element 9 is electrically connected to the circuit board 12 via a wire passing through the substrate 41. The circuit board 12 is disposed in the recess 442 and sleeved around the mounting post 443. The motor 7 is fixed to the circuit board 12. By disposing of the circuit board 12 in the recess 442 and sleeved around the mounting post 443, the installation of the circuit board 12 can be made more stable and safer.

[0041] Furthermore, multiple first air outlet baffles 102 and multiple second air outlet baffles 45 are respectively connected to each other. Each first air outlet baffle 102 is connected to the side of the corresponding second air outlet baffle 45 near the fan blade 2. The first air outlet baffle 102 is used to guide the rotating air from the fan blade 2 towards the direct blowing direction, and the second air outlet baffle 45 is used to further guide the air guided by the first air outlet baffle 102 towards the direct blowing direction.

[0042] Specifically, each of the first air outlet baffles 102 is arc-shaped, and the arc A forms an acute angle with the direction D1 of the rotation axis of the fan blade 2; each of the second air outlet baffles 45 is straight, and each of the second air outlet baffles 45 extends along the direction D1 of the rotation axis of the fan blade 2. It can be understood that through the above arrangement, the rotating air from the fan blade 2 can be guided along the direction of rotation at the first air outlet baffles 102, preventing airflow loss due to sudden changes in direction. Then, at the second air outlet baffles 45, the airflow is guided to the direct blowing direction, minimizing airflow loss and ensuring that the air volume and speed are not reduced, thereby improving the airflow efficiency of the fan 100.

[0043] Furthermore, when each of the first air outlet baffles 102 and the corresponding second air outlet baffles 45 is connected as a whole, the dimensions and positions of the mating end faces of the two correspond, so that the sides of the first air outlet baffles 102 and the two sides of the second air outlet baffles 45 are smoothly connected after connection, so that the air guiding structure of the two can obtain a better air guiding effect.

[0044] Furthermore, the fan 100 also includes an air guide 13, which is located in the housing and at least partially covers the periphery of the fan blade 2. The air guide 13 includes an annular wall structure 131, the inner diameter of which at least a portion gradually increases along the direction from the air inlet side 3 to the air outlet side. The annular wall structure 131 includes a first enclosure wall 132 and a second enclosure wall 133 connecting the first enclosure wall 132 to the side near the fan blade 2. The inner diameter of the second enclosure wall 133 gradually increases along the direction from the air inlet side 3 to the air outlet side. The fan 100 also includes a second fixing ring 14, which is disposed on the side of the air inlet cover 30 away from the air guide 13. The at least one air inlet 31 includes a plurality of air holes 311. The plurality of air holes 311 are circular, square, or regular hexagonal. By setting the air guide 13, and at least part of the inner diameter of the annular wall structure 131 of the air guide 13 gradually increases along the direction from the air inlet side 3 to the air outlet side, the air can be guided into the fan 100. In addition, the at least one air inlet 31 is provided with multiple air holes 311, which can ensure the air intake while preventing foreign objects such as hair and dust from entering the fan 100, thus ensuring the safety of the fan 100 during operation.

[0045] Furthermore, the fan 100 is a handheld fan with a handle 15 or a desktop fan with a base. It is understood that the fan 100 can be one of various types of fans, such as a desktop fan, a floor fan, a handheld fan, a neck fan, a clip fan, or a folding fan. In this embodiment, the fan 100 is mainly used as a handheld fan for illustrative purposes. It is understood that in other embodiments, the handle can be omitted or replaced with a base, etc.

[0046] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application 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 of the technical features. Such 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 application.

Claims

1. A fan, characterized in that, It includes: The fan housing includes a surrounding enclosure structure, a connecting portion, and a plurality of first air outlet baffles connecting the inner side of the enclosure structure and the connecting portion; The fan blades are located within the cavity enclosed by the wall structure. The motor is connected to the fan blades; An air inlet hood, connected to the air inlet side of the enclosure structure, has at least one air inlet; An air outlet hood, connected to the air outlet side of the enclosure structure, includes a base and multiple second air outlet baffles circumferentially connected to the periphery of the base. The multiple first air outlet baffles and the multiple second air outlet baffles are connected in a corresponding manner to form multiple air guide structures. An air outlet is formed between two adjacent air guide structures. Each air guide structure is used to guide the rotating air from the fan blades gradually toward the direct blowing direction, thereby blowing air out of the air outlet along the direct blowing direction.

2. The fan as described in claim 1, characterized in that, The connecting part includes a hollow connecting ring. The end face of the plurality of first air outlet plates away from the enclosure structure and close to the air inlet side of the enclosure structure is connected to the connecting ring. The end face also abuts against the base. The motor is fixed to the base via the connecting ring. The enclosure structure, the connecting part, and the plurality of first air outlet plates are integrally formed structures.

3. The fan as described in claim 1, characterized in that, The air outlet cover also includes a first fixing ring, which is fixed to the side of the plurality of first air outlet baffles away from the base; the first fixing ring, the base and the plurality of second air outlet baffles are integrally formed; the inner diameter of the first fixing ring gradually decreases along the direction from the air inlet side to the air outlet side to pressurize the air outlet.

4. The fan as described in claim 1, characterized in that, The motor is mounted on the side of the base near the fan blade and is located between the base and the fan blade; the fan blade has a base and a plurality of blades connecting the base, the base has a mounting groove, and the motor is at least partially located in the mounting groove.

5. The fan as described in claim 4, characterized in that, The substrate includes an outer surface away from the fan blade, an air inlet surface close to the fan blade, and a mounting surface connecting the center of the air inlet surface; the distance between the air inlet surface and the enclosure structure gradually decreases along the direction from the air inlet side to the air outlet side, thereby pressurizing the rotating air from the fan blade; a plurality of second air outlet baffles are arranged and connected to the air inlet surface.

6. The fan as described in claim 5, characterized in that, The mounting surface is provided with a mounting structure, and the motor is mounted on the mounting structure; the mounting surface includes a groove, and the mounting structure includes a mounting post connecting the bottom surface of the groove, and the motor is sleeved around the mounting post; the outer surface is a groove surface recessed towards the air inlet side, used to gather the air from the air outlet; the motor includes a motor shaft, a winding sleeved around the motor shaft, and a magnetic ring sleeved around the winding.

7. The fan as described in claim 6, characterized in that, The fan also includes a cover plate, which covers the outer surface and forms a receiving cavity with the outer surface; the fan also includes a cooling element and / or at least one magnetic element, the cooling element is used to cool and reduce the temperature of the air outlet side of the fan, the at least one magnetic element is arranged around a preset center and is used to magnetically fix the fan to an external object; the number of the at least one magnetic element is multiple, and the multiple magnetic elements are arranged sequentially along the circumferential direction; the fan also includes a circuit board, the cooling element is electrically connected to the circuit board through a wire passing through the base, the circuit board is disposed in the groove and sleeved around the mounting post, and the motor is fixed on the circuit board.

8. The fan as claimed in claim 1, characterized in that, Multiple first air outlet baffles and multiple second air outlet baffles are respectively connected to each other. Each first air outlet baffle is connected to the side of the corresponding second air outlet baffle near the fan blade. The first air outlet baffle is used to guide the rotating air from the fan blade toward the direct blowing direction, and the second air outlet baffle is used to further guide the air guided by the first air outlet baffle toward the direct blowing direction.

9. The fan as described in claim 8, characterized in that, Each of the first air outlet panels is arc-shaped, and the arc-shaped shape forms an acute angle with the direction of the rotation axis of the fan blade; each of the second air outlet panels is straight, and each of the second air outlet panels extends along the direction of the rotation axis of the fan blade.

10. The fan as claimed in claim 1, characterized in that, The fan further includes an air guide, which is located in the housing and at least partially covers the periphery of the fan blades. The air guide includes an annular wall structure, the inner diameter of which at least a portion gradually increases from the air inlet side to the air outlet side. The annular wall structure includes a first enclosure wall and a second enclosure wall connecting the first enclosure wall to the side near the fan blades. The inner diameter of the second enclosure wall gradually increases from the air inlet side to the air outlet side. The fan further includes a second fixing ring, which is disposed on the side of the air inlet cover away from the air guide. The at least one air inlet includes a plurality of air holes. The plurality of air holes are circular, square, or regular hexagonal.

Images