Mesh cover and fan

Abstract

The utility model relates to a mesh enclosure and a fan, and the mesh enclosure comprises a first air supply assembly which comprises at least two air supply grilles, and the air supply grilles are connected into a whole in the circumferential direction of the mesh enclosure; wherein each air supply grille is provided with a first air guide channel and a second air guide channel which are independent, and in the radial direction of the mesh enclosure, the second air guide channel is located on the periphery of the first air guide channel; in the radial direction of the mesh enclosure, at least one of the first air guide channel and the second air guide channel is provided with a tip part. The fan comprises the mesh enclosure. According to the mesh enclosure and the fan, at least one of the first air guide channel and the second air guide channel is provided with the tip part, air can be supplied through the first air guide channel and the second air guide channel when the fan runs, multi-path and multi-angle airflow flowing is achieved, airflow distribution is enhanced, wind resistance and running noise are effectively reduced, and the service life of the fan is prolonged. And the structural strength of the mesh enclosure is enhanced.

Description

Technical Field

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

[0002] Currently, fans generally use a combination of thin blades and metal or plastic mesh covers. The fan's airflow type (focused or non-focused) can be changed by the mesh cover to increase wind speed and air volume.

[0003] Due to the high cost of metal mesh covers, they have gradually been replaced by plastic mesh covers. However, plastic mesh covers have the problem of high wind resistance, which will result in a loss of airflow and a reduction in the airflow of the fan. Utility Model Content

[0004] Therefore, it is necessary to provide a fan guard and fan to address the problem of high wind resistance in existing fan guards.

[0005] A mesh cover includes: a first air supply assembly comprising at least two air supply grilles, each of the air supply grilles being interconnected as a whole along the circumference of the mesh cover; wherein each air supply grille has an independent first air guide channel and a second air guide channel, and in the radial direction of the mesh cover, the second air guide channel is located on the outer periphery of the first air guide channel; in the radial direction of the mesh cover, at least one of the first air guide channel and the second air guide channel has a pointed portion. In the aforementioned mesh cover, the second air guide channel is located on the outer periphery of the first air guide channel in the radial direction of the mesh cover, and at least one of the first air guide channel and the second air guide channel has a pointed portion. During fan operation, air can be delivered through the first air guide channel and the second air guide channel respectively, achieving multi-path and multi-angle airflow, enhancing airflow distribution, effectively reducing wind resistance and operating noise, and also helping to strengthen the structural strength of the mesh cover.

[0006] In some embodiments, the first air guide channel has the tip at one end near the second air guide channel.

[0007] In some embodiments, the first air guide channel has a top wall, two first side walls and two second side walls, the two second side walls are arranged at an included angle, each second side wall is connected to one first side wall, and the top wall is connected between the two first side walls; the top wall, the two first side walls and the two second side walls are arranged to form the first air guide channel, and the tip is formed at the intersection of the two second side walls.

[0008] In some embodiments, the included angle between the two second sidewalls is θ2, where 0° < θ2 ≤ 35°.

[0009] In some embodiments, the angle between the top wall and the first side wall is θ3, where θ3 ≧ 90°.

[0010] In some embodiments, the air supply grille includes an air supply body and at least two first ribs, all of which are located at the same end of the air supply body, and a second air guide channel is formed between two adjacent first ribs, the first air guide channel being located in the air supply body.

[0011] In some embodiments, there are two second air guide channels, and each second air guide channel is distributed at circumferential intervals along the mesh cover.

[0012] In some embodiments, the number of first ribs is three, one of which extends radially outward from the intersection of the two second sidewalls along the mesh cover, and the other two first ribs extend outward from the tangential direction of the two first sidewalls respectively.

[0013] In some embodiments, the included angle between any two adjacent first ribs is equal.

[0014] In some embodiments, the included angle between two adjacent first ribs is θ1, where 0° < θ1 ≤ 20°.

[0015] In some embodiments, each of the first ribs is configured as a straight structure or a curved structure.

[0016] In some embodiments, the mesh cover further includes a second air supply assembly surrounding each of the first ribs.

[0017] In some embodiments, the second air supply assembly includes a partition ring, a connecting ring, and at least two second ribs. The partition ring surrounds the outer periphery of each of the first ribs, the connecting ring surrounds the outer periphery of the partition ring, and each of the second ribs is disposed between the partition ring and the connecting ring, with a third air guide channel formed between two adjacent second ribs.

[0018] In some embodiments, each of the second reinforcing bars has a first connecting end connected to the partition ring, and the angle between the first connecting end and the axial direction of the mesh cover is α1, where 0°≤α1≤25°.

[0019] In some embodiments, each of the second reinforcing bars further has a second connecting end connected to the connecting ring, and the angle between the second connecting end and the axial direction of the mesh cover is α2, where 10°≤α2≤40°.

[0020] In some embodiments, each of the second ribs is configured as a straight structure or a curved structure.

[0021] In some embodiments, the central axis of the connecting ring overlaps with the central axis of the separating ring.

[0022] A fan includes the aforementioned mesh cover. In the fan, along the radial direction of the mesh cover, a second air guide channel is located outside the first air guide channel, and at least one of the first and second air guide channels has a pointed tip. During fan operation, air can be delivered through the first and second air guide channels respectively, achieving multi-path, multi-angle airflow, enhancing airflow distribution, effectively reducing wind resistance and operating noise, and also strengthening the structural strength of the mesh cover. Attached Figure Description

[0023] Figure 1 This is a front view of the mesh cover in some embodiments of this application.

[0024] Figure 2 for Figure 1 The front view of the first air supply component in the mesh cover shown.

[0025] Figure 3 for Figure 2 The image shows an isometric view of the air supply grille in the first air supply assembly.

[0026] Figure 4 for Figure 3 The top view of the air supply grille shown.

[0027] Figure 5 for Figure 4 A simplified top view of the air supply grille shown.

[0028] Figure 6 for Figure 1 The front view of the second air supply component in the mesh cover shown.

[0029] Figure 7 for Figure 6 A schematic diagram of the second air supply component from a first-view perspective.

[0030] Figure 8 for Figure 6 A schematic diagram of the second air supply component from a second perspective.

[0031] Figure label:

[0032] 100. First air supply assembly; 101. First air guide channel; 101a. Top wall; 101b. First side wall; 101c. Second side wall; 102. Second air guide channel; 103. Tip; 110. Air supply grille; 111. Air supply body; 112. First rib;

[0033] 200, Second air supply assembly; 201, Third air guide channel; 210, Separating ring; 220, Connecting ring; 230, Second rib; 231, First connecting end; 232, Second connecting end. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] In the description of this application, it should be understood that the 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., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, the terms "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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "initial," "connected," "linked," and "fixed," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, 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," "on top of," and "over" 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.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] Currently, fans generally use a combination of thin blades and metal or plastic mesh covers. The fan's airflow type (focused or non-focused) can be changed by the mesh cover to increase wind speed and air volume.

[0041] Due to the high cost of metal mesh covers, they have gradually been replaced by plastic mesh covers. However, plastic mesh covers have the problem of high wind resistance, which will result in a loss of airflow and a reduction in the airflow of the fan.

[0042] Based on the above considerations, this application designs a mesh cover and a fan. Along the radial direction of the mesh cover, the second air guide channel is located on the outer periphery of the first air guide channel, and at least one of the first air guide channel and the second air guide channel has a pointed end. When the fan is running, air can be delivered through the first air guide channel and the second air guide channel respectively, realizing multi-path and multi-angle airflow, enhancing airflow distribution, effectively reducing wind resistance and operating noise, and helping to strengthen the structural strength of the mesh cover.

[0043] Please refer to Figures 1 to 3 In one embodiment, the mesh cover includes a first air supply assembly 100, which includes at least two air supply grilles 110. Each air supply grille 110 is interconnected as a whole along the circumference of the mesh cover. Each air supply grille 110 has an independent first air guide channel 101 and a second air guide channel 102. Along the radial direction of the mesh cover, the second air guide channel 102 is located on the outer periphery of the first air guide channel 101. Along the radial direction of the mesh cover, at least one of the first air guide channel 101 and the second air guide channel 102 has a tip 103.

[0044] It should be noted that the circumferential direction of the mesh is... Figure 1 and Figure 2 As shown in the X direction, the radial direction of the mesh is Figure 3 As shown in the Y direction. Along the radial direction of the mesh cover, the second air guide channel 102 is located on the outer periphery of the first air guide channel 101. This can be understood as: the first air guide channel 101 and the second air guide channel 102 along... Figure 3 The Y-direction is arranged sequentially from the inside to the outside.

[0045] Here, a mesh cover is used in the fan, and the mesh cover is located on the air outlet surface of the fan (that is, the front mesh cover). When the fan is running, since the second air guide channel 102 and the first air guide channel 101 are independent of each other, the airflow can be delivered through the first air guide channel 101 and the second air guide channel 102 respectively.

[0046] In the aforementioned mesh cover, the second air guide channel 102 is located on the outer periphery of the first air guide channel 101 along the radial direction of the mesh cover, and at least one of the first air guide channel 101 and the second air guide channel 102 has a tip 103. When the fan is running, air can be delivered through the first air guide channel 101 and the second air guide channel 102 respectively, realizing multi-path and multi-angle airflow, enhancing airflow distribution, effectively reducing wind resistance and operating noise, and helping to strengthen the structural strength of the mesh cover.

[0047] In the embodiments of this application, each air supply grille 110 is an integral structure, for example, each air supply grille 110 is integrally formed by casting, injection molding or other methods, which has good integrity and high mechanical strength. The shape and size of each air supply grille 110 are exactly the same to facilitate the uniformity of air supply.

[0048] In the embodiments of this application, the air delivery areas of the first air guide channel 101 and the second air guide channel 102 may be equal or unequal.

[0049] In the embodiments of this application, only the first air guide channel 101 may have a pointed tip 103 along the radial direction of the mesh cover, or only the second air guide channel 102 may have a pointed tip 103 along the radial direction of the mesh cover, or both the first air guide channel 101 and the second air guide channel 102 may have a pointed tip 103 along the radial direction of the mesh cover.

[0050] Please refer to Figure 3 The first air guide channel 101 has a pointed end 103 at the end near the second air guide channel 102.

[0051] Understandably, the first air guide channel 101 has a gradually narrowing structure from the inside to the outside along the radial direction of the mesh cover, which helps to reduce wind resistance and operating noise.

[0052] In the embodiments of this application, the tip 103 may be V-shaped, C-shaped or other shaped tip structures, and the specific shape of the tip 103 is not limited here.

[0053] For details, please refer to Figure 4 and Figure 5 The first air guide channel 101 has a top wall 101a, two first side walls 101b and two second side walls 101c. The two second side walls 101c are arranged at an angle, and each second side wall 101c is connected to a first side wall 101b. The top wall 101a is connected between the two first side walls 101b. The top wall 101a, the two first side walls 101b and the two second side walls 101c form the first air guide channel 101, and the tip 103 is formed at the intersection of the two second side walls 101c.

[0054] It should be noted that the top wall 101a, the two first side walls 101b, and the two second side walls 101c form the first air guiding channel 101, and the top wall 101a, the two first side walls 101b, and the two second side walls 101c are all the inner walls of the first air guiding channel 101. The tip 103 is formed at the intersection of the two second side walls 101c, that is, the tip 103 is formed at one end of the first air guiding channel 101 near the second air guiding channel 102.

[0055] In the embodiments of this application, the tip 103 is formed at the intersection of the two second sidewalls 101c. The two second sidewalls 101c and the two first sidewalls 101b can be symmetrically distributed on opposite sides of the top wall 101a so that the first air guide channel 101 has a left-right symmetrical structure, which is beneficial to the uniformity of air delivery.

[0056] In the embodiments of this application, the second sidewall 101c and the first sidewall 101b are also set at an angle. The angle between the second sidewall 101c and the first sidewall 101b can be 0~180°. When the angle between the second sidewall 101c and the first sidewall 101b is 0 or 180°, there is no angle between the second sidewall 101c and the first sidewall 101b, that is, the second sidewall 101c and the first sidewall 101b are parallel and connected.

[0057] In the embodiments of this application, the top wall 101a and the first side wall 101b are also arranged at an angle, and the angle between the top wall 101a and the first side wall 101b is greater than or equal to 90°.

[0058] In the embodiments of this application, the top wall 101a, the two first side walls 101b and the two second side walls 101c can all be planar, or all be curved, or part of them can be planar and the other part can be curved.

[0059] For a specific embodiment, please refer to Figure 4 and Figure 5 The included angle between the two second sidewalls 101c is θ2, where 0°<θ2≤35°.

[0060] Here, the included angle between the two second sidewalls 101c is an acute angle, so that the intersection of the two second sidewalls 101c can form a tip 103.

[0061] For a specific embodiment, please refer to Figure 4 and Figure 5 The included angle between the top wall 101a and the first side wall 101b is θ3, where θ3 ≧ 90°.

[0062] Here, the angle between the top wall 101a and the first side wall 101b is a right angle or an obtuse angle, so that the top wall 101a and the first side wall 101b are not coplanar.

[0063] Please refer to Figure 4 and Figure 5 The air supply grille 110 includes an air supply body 111 and at least two first ribs 112. All the first ribs 112 are located at the same end of the air supply body 111. A second air guide channel 102 is formed between two adjacent first ribs 112. The first air guide channel 101 is located in the air supply body 111.

[0064] It should be noted that since the first air guide channel 101 is located on the air supply body 111, all the first ribs 112 are located at the same end of the air supply body 111, that is, all the first ribs 112 are located at the same end of the first air guide channel 101.

[0065] In the embodiments of this application, since the first air guide channel 101 is disposed on the air supply body 111, and the end of the first air guide channel 101 near the second air guide channel 102 forms a pointed portion 103, the air supply body 111 is a hollow closed ring structure. The overall outer contour of the air supply body 111 can be in the shape of a sunflower petal, a rhombus, or other shapes.

[0066] In the embodiments of this application, the shape and size of each first rib 112 may be exactly the same or different.

[0067] In the embodiments of this application, the air supply body 111 and each of the first ribs 112 are integral structures. The air supply body 111 and each of the first ribs 112 can be integrally formed by casting, injection molding or other methods, which has good integrity and high mechanical strength.

[0068] For details, please refer to Figure 4 and Figure 2 There are two second air guide channels 102, and each second air guide channel 102 is distributed at intervals along the circumference of the mesh cover.

[0069] It is understandable that the second air guide channels 102 are distributed at intervals along the circumference of the mesh cover, that is, the second air guide channels 102 are distributed along the circumference of the mesh cover. Figure 2The X-direction spacing is shown. This allows for multi-path, multi-angle airflow, enhancing the airflow distribution around the mesh.

[0070] In the embodiments of this application, the air supply area of ​​all the second air guide channels 102 may be equal or unequal, that is, the shape of all the second air guide channels 102 may be the same or different.

[0071] In the embodiments of this application, the end of all the second air guide channels 102 near the first air guide channel 101 may also form a tip 103 to better guide the airflow, reduce airflow turbulence and noise, reduce wind resistance and operating noise, and improve the efficiency and performance of the fan.

[0072] For more specific details, please refer to Figure 5 and Figure 2 There are three first ribs 112. One of the first ribs 112 extends outward along the radial direction of the mesh from the intersection of the two second sidewalls 101c, and the other two first ribs 112 extend outward from the tangential direction of the two first sidewalls 101b respectively.

[0073] It should be noted that one of the first ribs 112 extends radially outward from the intersection of the two second sidewalls 101c along the mesh cover, that is, from the tip 103 of the first air guide channel 101 along... Figure 5 The Y-direction extends outward as shown; the other two first ribs 112 extend outward from the tangent direction of the two first sidewalls 101b, that is, they extend outward from the tangent direction L1.

[0074] With the above arrangement, all the first ribs 112 are located at the same end of the air supply body 111 and extend in the same direction on the same side of the air supply body 111, which can form two second air guide channels 102 in the circumferential direction of the mesh cover, which is conducive to enhancing the distribution of airflow in the circumferential direction of the mesh cover.

[0075] Please refer to Figure 5 The included angle between any two adjacent first reinforcing bars 112 is equal.

[0076] It is understandable that the included angle between any two adjacent first ribs 112 is equal, which enables all the first ribs 112 to be evenly distributed along the circumference of the mesh cover, which is beneficial to the uniformity of air supply.

[0077] Further, please refer to Figure 5 The included angle between two adjacent first ribs 112 is θ1, where 0°<θ1≤20°.

[0078] Here, the angle between two adjacent first ribs 112 affects the size of the second air guide channel 102 and the structural strength of the air supply grille 110. By limiting the range of the angle between two adjacent first ribs 112, the second air guide channel 102 can deliver air smoothly without affecting the structural strength of the air supply grille 110.

[0079] Furthermore, please refer to Figure 4 Each of the first reinforcing bars 112 is constructed as a straight line structure or a curved structure.

[0080] In the embodiments of this application, the straight structure can be an I-shaped, T-shaped, or other straight strip-shaped structure extending radially along the mesh cover. In order to maintain the air volume and airflow of the first air supply assembly 100, the first rib 112 is preferably a straight structure.

[0081] In the embodiments of this application, the curved structure can be a smooth and flowing line, a structure with a slight curvature in the shape of a teardrop or similar shape, and the curved structure can reduce the resistance encountered during airflow.

[0082] Please refer to Figure 6 and Figure 1 The mesh cover also includes a second air supply component 200, which surrounds the outer periphery of each of the first ribs 112.

[0083] Understandably, the second air supply component 200 is arranged around the outer periphery of each of the first ribs 112, which can both expand the air supply area of ​​the mesh cover and strengthen the structural strength of the mesh cover.

[0084] In the embodiments of this application, the number of second air supply components 200 is not limited to one. When the number of second air supply components 200 is at least two, each second air supply component 200 can be sequentially fitted around the outer periphery of all the first ribs 112 along the radial direction of the mesh cover, which can further expand the air supply area.

[0085] In the embodiments of this application, the second air supply component 200 and the first air supply component 100 are an integral structure with good integrity and high mechanical strength. For example, the second air supply component 200 and the first air supply component 100 can be integrally formed by casting, injection molding or other methods.

[0086] For details, please refer to Figure 6 and Figure 1 The second air supply assembly 200 includes a partition ring 210, a connecting ring 220 and at least two second ribs 230. The partition ring 210 surrounds the outer periphery of each first rib 112, the connecting ring 220 surrounds the outer periphery of the partition ring 210, and each second rib 230 is disposed between the partition ring 210 and the connecting ring 220, and a third air guide channel 201 is formed between two adjacent second ribs 230.

[0087] It should be noted that one end of all the second ribs 230 is connected to the partition ring 210, and the other end of all the second ribs 230 is connected to the connecting ring 220, so that each second rib 230 is located between the partition ring 210 and the connecting ring 220.

[0088] In the embodiments of this application, the shape and size of each second rib 230 may be exactly the same or different.

[0089] In the embodiments of this application, both the separator ring 210 and the connecting ring 220 are hollow ring structures, and the ring structure can be a circular ring, an elliptical ring, or other ring structures.

[0090] In the embodiments of this application, the partition ring 210, the connecting ring 220 and each of the second ribs 230 are integral structures. The partition ring 210, the connecting ring 220 and each of the second ribs 230 can be integrally formed by casting, injection molding and other methods, which has good integrity and high mechanical strength.

[0091] In the embodiments of this application, the air supply area of ​​all the third air guide channels 201 can be equal or unequal, that is, the shape of all the third air guide channels 201 can be the same or different.

[0092] Please refer to Figure 7 Each second rib 230 has a first connecting end 231, which is connected to the partition ring 210. The angle between the first connecting end 231 and the axial direction of the mesh cover is α1, where 0°≤α1≤25°.

[0093] It should be noted that the angle between the first connecting end 231 and the axial direction of the mesh cover is designed to both avoid affecting the airflow of the fan and increase the airflow area. By limiting α1 to 0°~25°, during fan operation, as the airflow is transmitted outward along the end face of the first connecting end 231, wind resistance can be reduced and the airflow area can be increased.

[0094] In the embodiments of this application, the included angles between the first connecting ends 231 of all the second ribs 230 and the axial direction of the mesh cover are equal, so as to facilitate the uniformity of air supply.

[0095] Further, please refer to Figure 8 Each second rib 230 also has a second connecting end 232, which is connected to the connecting ring 220. The included angle between the second connecting end 232 and the axial direction of the mesh cover is α2, where 10°≤α2≤40°.

[0096] Understandably, the angle between the second connecting end 232 and the axial direction of the mesh cover is designed to both avoid affecting the fan's airflow and increase the airflow area. By limiting α2 to 10°~40°, during fan operation, as the airflow travels outward along the end face of the second connecting end 232, wind resistance is reduced and the airflow area is increased.

[0097] In the embodiments of this application, the included angles between the second connecting ends 232 of all the second ribs 230 and the axial direction of the mesh cover are equal, so as to facilitate the uniformity of air supply.

[0098] For a specific embodiment, please refer to Figure 8 Each of the second reinforcing bars 230 is constructed as a straight line or a curved structure.

[0099] In the embodiments of this application, the straight structure can be an I-shaped, T-shaped, or other straight strip-shaped structure extending radially along the mesh cover. In order to maintain the air volume and airflow of the first air supply assembly 100, the first rib 112 is preferably a straight structure.

[0100] In the embodiments of this application, the curved structure can be a smooth and flowing line, a structure with a slight curvature in the shape of a teardrop or similar shape, and the curved structure can reduce the resistance encountered during airflow.

[0101] For a specific embodiment, please refer to Figure 1 The central axis of the connecting ring 220 overlaps with the central axis of the separating ring 210.

[0102] Here, the connecting ring 220 and the separating ring 210 are coaxially arranged, that is, the first air supply assembly 100 and the second air supply assembly 200 are coaxially arranged, which is beneficial to the uniformity and concentration of air supply.

[0103] Please refer to Figure 1 In one embodiment, the fan includes the aforementioned mesh cover.

[0104] It should be noted that the aforementioned fan also includes components such as fan blades, and the mesh cover is placed on the outside of the fan blades to provide protection and airflow.

[0105] In the aforementioned fan, along the radial direction of the mesh cover, the second air guide channel 102 is located on the outer periphery of the first air guide channel 101, and at least one of the first air guide channel 101 and the second air guide channel 102 has a tip 103. When the fan is running, it can deliver air through the first air guide channel 101 and the second air guide channel 102 respectively, realizing multi-path and multi-angle airflow, enhancing airflow distribution, effectively reducing wind resistance and operating noise, and helping to strengthen the structural strength of the mesh cover.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A mesh cover, characterized in that, include: The first air supply assembly (100) includes at least two air supply grilles (110), each of the air supply grilles (110) being interconnected as a whole along the circumference of the mesh cover; Each of the air supply grilles (110) has an independent first air guide channel (101) and a second air guide channel (102). In the radial direction of the mesh cover, the second air guide channel (102) is located on the outer periphery of the first air guide channel (101). In the radial direction of the mesh cover, at least one of the first air guide channel (101) and the second air guide channel (102) has a tip (103).

2. The mesh cover according to claim 1, characterized in that, The first air guide channel (101) has the tip (103) at one end near the second air guide channel (102).

3. The mesh cover according to claim 2, characterized in that, The first air guide channel (101) has a top wall (101a), two first side walls (101b) and two second side walls (101c). The two second side walls (101c) are arranged at an included angle. Each second side wall (101c) is connected to one first side wall (101b). The top wall (101a) is connected between the two first side walls (101b). The top wall (101a), the two first side walls (101b) and the two second side walls (101c) are arranged to form the first air guide channel (101), and the tip (103) is formed at the intersection of the two second side walls (101c).

4. The mesh cover according to claim 3, characterized in that, The included angle between the two second sidewalls (101c) is θ2, where 0° < θ2 ≤ 35°.

5. The mesh cover according to claim 3, characterized in that, The angle between the top wall (101a) and the first side wall (101b) is θ3, where θ3 ≧ 90°.

6. The mesh cover according to claim 3, characterized in that, The air supply grille (110) includes an air supply body (111) and at least two first ribs (112). All the first ribs (112) are located at the same end of the air supply body (111). A second air guide channel (102) is formed between two adjacent first ribs (112). The first air guide channel (101) is located on the air supply body (111).

7. The mesh cover according to claim 6, characterized in that, There are two second air guide channels (102), and each second air guide channel (102) is distributed at intervals along the circumference of the mesh cover.

8. The mesh cover according to claim 7, characterized in that, There are three first ribs (112), one of which extends radially outward from the intersection of the two second sidewalls (101c) along the mesh cover, and the other two first ribs (112) extend outward from the tangential direction of the two first sidewalls (101b).

9. The mesh cover according to claim 8, characterized in that, The included angle between any two adjacent first ribs (112) is equal.

10. The mesh cover according to claim 9, characterized in that, The included angle between two adjacent first ribs (112) is θ1, where 0° < θ1 ≤ 20°.

11. The mesh cover according to claim 6, characterized in that, Each of the first reinforcing bars (112) is constructed as a straight line or a curved line.

12. The mesh cover according to claim 6, characterized in that, The mesh cover also includes a second air supply component (200), which surrounds the outer periphery of each of the first ribs (112).

13. The mesh cover according to claim 12, characterized in that, The second air supply assembly (200) includes a partition ring (210), a connecting ring (220), and at least two second ribs (230). The partition ring (210) surrounds the outer periphery of each of the first ribs (112), and the connecting ring (220) surrounds the outer periphery of the partition ring (210). Each of the second ribs (230) is located between the partition ring (210) and the connecting ring (220), and a third air guide channel (201) is formed between two adjacent second ribs (230).

14. The mesh cover according to claim 13, characterized in that, Each of the second reinforcing bars (230) has a first connecting end (231), which is connected to the separating ring (210). The angle between the first connecting end (231) and the axial direction of the mesh cover is α1, where 0°≤α1≤25°.

15. The mesh cover according to claim 13, characterized in that, Each of the second reinforcing bars (230) also has a second connecting end (232), which is connected to the connecting ring (220). The angle between the second connecting end (232) and the axial direction of the mesh cover is α2, where 10°≤α2≤40°.

16. The mesh cover according to claim 13, characterized in that, Each of the second reinforcing bars (230) is constructed as a straight line or a curved line.

17. The mesh cover according to claim 13, characterized in that, The central axis of the connecting ring (220) overlaps with the central axis of the separating ring (210).

18. A fan, characterized in that, Includes the mesh cover as described in any one of claims 1-17.

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