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 an air supply main body and at least two first ribs, the first ends of all the first ribs are gathered together and connected to the air supply main body, and the second ends of all the first ribs are arranged at intervals in the circumferential direction of the mesh enclosure; the air supply body is provided with first air guide channels, and a second air guide channel is formed between every two adjacent first ribs. The fan comprises the mesh enclosure. The fan, the first air guide channel and the second air guide channels are sequentially arranged in the radial direction of the mesh enclosure, the second air guide channels are distributed along the mesh enclosure in a scattered mode from the gathering point, airflow distribution is enhanced in the circumferential direction and the radial direction of the mesh enclosure, multi-path airflow flowing is achieved, and wind resistance and operation noise are effectively reduced.

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[0003] Due to the high cost of metal mesh covers, they have gradually been replaced by plastic mesh covers.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 air supply body and at least two first ribs, the first ends of all the first ribs converging together and connected to the air supply body, and the second ends of all the first ribs being spaced apart along the circumference of the mesh cover; the air supply body has a first air guide channel, and a second air guide channel is formed between every two adjacent first ribs. In the aforementioned mesh cover, the first ends of all the first ribs converging together and connected to the air supply body, and the second ends of all the first ribs being spaced apart along the circumference of the mesh cover, that is, the first air guide channel and the second air guide channel are arranged sequentially along the radial direction of the mesh cover, and each second air guide channel is dispersedly distributed along the mesh cover from the convergence point, thereby enhancing airflow distribution in the circumference and radial direction of the mesh cover, realizing multi-path airflow, and effectively reducing wind resistance and operating noise.

[0006] In some embodiments, the included angle between two adjacent first ribs is δ4, where 30°≤δ4≤70°.

[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 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 form the first air guide channel.

[0008] In some embodiments, the included angle between the two second sidewalls is δ1, where 50°≤δ1≤100°.

[0009] In some embodiments, the angle between the second sidewall and the first sidewall is δ2, where 90°≤δ2<180°.

[0010] In some embodiments, the angle between the top wall and the first side wall is δ5, where 75°≤δ5≤120°.

[0011] In some embodiments, in two adjacent air supply grilles, the included angle between the second sidewall of one air supply grille and the second sidewall of the other air supply grille is δ3, where 60°≤δ3≤110°.

[0012] In some embodiments, in two adjacent air supply grilles, the maximum distance between the second sidewall of one air supply grille and the second sidewall of the other air supply grille is Φ4, where Φ4≤12mm.

[0013] In some embodiments, the first air guide channel has a first root at one end near the second air guide channel, and the maximum spacing of the first root is Φ1, where Φ1≤12mm.

[0014] In some embodiments, the end of the first air guide channel away from the second air guide channel has a first top, and the maximum spacing of the first top is Φ2, where Φ1≤Φ2≤12mm.

[0015] In some embodiments, the second air guide channel has a second top at one end near the first air guide channel, and the maximum spacing of the second top is Φ3, where Φ3≤12mm.

[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 at least two second ribs, all of which are arranged around the outer periphery of each first rib along the circumference of the mesh cover, and a third air guide channel is formed between two adjacent second ribs.

[0018] In some embodiments, each of the second ribs has a first connecting end connected to the second rib, and the angle between the first connecting end and the axial direction of the mesh is θ, where 0°≤θ≤25°.

[0019] In some embodiments, each of the second ribs has a second connecting end, which is the end away from the second rib, and the angle between the second connecting end and the axial direction of the mesh is β, where 0°≤β≤25°.

[0020] In some embodiments, the mesh cover further includes a third air supply assembly surrounding the periphery of the second air supply assembly.

[0021] In some embodiments, the third air supply assembly includes a partition ring, a connecting ring, and at least two third ribs. The partition ring is disposed around the outer periphery of the second air supply assembly, the connecting ring is disposed around the outer periphery of the partition ring, and each of the third ribs is disposed between the partition ring and the connecting ring, and a fourth air guide channel is formed between two adjacent third ribs.

[0022] In some embodiments, each of the third ribs has a third connecting end connected to the partition ring, and the angle between the third connecting end and the axial direction of the mesh cover is α1, where 0°≤α1≤25°.

[0023] In some embodiments, each of the third ribs further has a fourth connecting end, which is connected to the connecting ring, and the angle between the fourth connecting end and the axial direction of the mesh cover is α2, where 10°≤α2≤40°.

[0024] A fan includes the aforementioned mesh cover. In the aforementioned fan, the first ends of all the first ribs converge together and are connected to the air supply body, and the second ends of all the first ribs are spaced apart along the circumference of the mesh cover. That is, the first air guide channel and the second air guide channel are arranged sequentially along the radial direction of the mesh cover, and each second air guide channel is distributed along the mesh cover from the convergence point. This enhances the airflow distribution in the circumference and radial direction of the mesh cover, realizes multi-path airflow, and effectively reduces wind resistance and operating noise. Attached Figure Description

[0025] Figure 1 This is a front view of the mesh cover in some embodiments of this application.

[0026] Figure 2 for Figure 1 The front view of the first and third air supply components in the mesh cover shown.

[0027] Figure 3 for Figure 2 The image shows an isometric view of the air supply grille in the first air supply assembly.

[0028] Figure 4 for Figure 3 A magnified view of part A of the air supply grille shown.

[0029] Figure 5 for Figure 4 A simplified top view of the air supply grille shown.

[0030] Figure 6 for Figure 4 The top view of the air supply grille shown.

[0031] Figure 7 for Figure 1 The second and third air supply components are shown in isometric view.

[0032] Figure 8 for Figure 7 A magnified view of part B of the second and third air supply components shown.

[0033] Figure 9 for Figure 1 The diagram shows the second rib in the second air supply assembly from a first perspective.

[0034] Figure 10 for Figure 1 The second rib in the second air supply assembly is shown as a schematic diagram from a second perspective.

[0035] Figure 11 for Figure 1 The diagram shows the third rib in the third air supply assembly from a first-view perspective.

[0036] Figure 12 for Figure 1 The diagram shows the third rib in the third air supply assembly from a second perspective.

[0037] Figure label:

[0038] 100. First air supply assembly; 110. Air supply grille; 111. Air supply body; 112. First rib; 112a. First end; 112b. Second end; 113. First air guide channel; 113a. Top wall; 113b. First side wall; 113c. Second side wall; 113d. First root; 113e. First top; 114. Second air guide channel; 114a. Second top; 115. Air passageway;

[0039] 200. Second air supply assembly; 210. Second rib; 211. First connecting end; 212. Second connecting end; 220. Third air guide channel;

[0040] 300, Third air supply component; 310, Separating ring; 320, Connecting ring; 330, Third rib; 331, Third connecting end; 332, Fourth connecting end; 340, Fourth air guide channel. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] Based on the above considerations, this application designs a mesh cover and a fan. In the mesh cover, the first ends of all the first ribs are gathered together and connected to the air supply body, and the second ends of all the first ribs are spaced apart along the circumference of the mesh cover. That is, the first air guide channel and the second air guide channel are arranged in sequence along the radial direction of the mesh cover, and each second air guide channel is distributed along the mesh cover from the gathering point. This enhances the airflow distribution in the circumference and radial direction of the mesh cover, realizes multi-path airflow, and effectively reduces wind resistance and operating noise.

[0050] Please refer to Figures 1 to 5 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 air supply body 111 and at least two first ribs 112. The first ends 112a of all the first ribs 112 converge together and are connected to the air supply body 111, and the second ends 112b of all the first ribs 112 are spaced apart along the circumference of the mesh cover. The air supply body 111 has a first air guide channel 113, and a second air guide channel 114 is formed between every two adjacent first ribs 112.

[0051] It should be noted that the circumferential direction of the mesh is... Figure 1 and Figure 2 In the X direction shown; the first end 112a and the second end 112b of the first rib 112 are arranged opposite each other along the radial direction of the mesh cover, and the radial direction of the mesh cover is... Figure 5 Y direction shown.

[0052] 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 114 and the first air guide channel 113 are independent of each other, the airflow can be delivered through the first air guide channel 113 and the second air guide channel 114 respectively.

[0053] In the aforementioned mesh cover, the first ends 112a of all the first ribs 112 converge together and are connected to the air supply body 111, and the second ends 112b of all the first ribs 112 are spaced apart along the circumference of the mesh cover. That is, the first air guide channel 113 and the second air guide channel 114 are arranged sequentially along the radial direction of the mesh cover, and each second air guide channel 114 is distributed along the mesh cover from the convergence point. This enhances the airflow distribution in the circumference and radial direction of the mesh cover, realizes multi-path airflow, and effectively reduces wind resistance and operating noise.

[0054] 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.

[0055] 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, resulting in good integrity and high mechanical strength. The air supply body 111 is a hollow closed ring structure, and the overall outer contour of the air supply body 111 can be pentagonal, rhomboid, or other shapes.

[0056] In the embodiments of this application, the shape and size of each first rib 112 may be exactly the same or different. Each first rib 112 may be constructed as a straight structure or a curved structure. The straight structure may be a straight strip-shaped structure extending radially along the mesh cover, such as an I-shape or a T-shape. The curved structure may be a smooth and flowing line or a structure with a slight curvature that is teardrop-shaped or similar in shape. 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.

[0057] In the embodiments of this application, the air supply area of ​​each second air guide channel 114 may be equal or unequal.

[0058] For details, please refer to Figure 5 The included angle between two adjacent first reinforcing bars 112 is δ4, where 30°≤δ4≤70°.

[0059] Understandably, the angle between two adjacent first ribs 112 affects the size of the second air guide channel 114 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 114 can deliver air smoothly without affecting the structural strength of the air supply grille 110.

[0060] In the embodiments of this application, 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.

[0061] Please refer to Figure 5 The first air guide channel 113 has a top wall 113a, two first side walls 113b and two second side walls 113c. The two second side walls 113c are arranged at an angle, and each second side wall 113c is connected to a first side wall 113b. The top wall 113a is connected between the two first side walls 113b. The top wall 113a, the two first side walls 113b and the two second side walls 113c form the first air guide channel 113.

[0062] It should be noted that the top wall 113a, the two first side walls 113b and the two second side walls 113c are arranged to form the first air guiding channel 113, and the top wall 113a, the two first side walls 113b and the two second side walls 113c are all the inner walls of the first air guiding channel 113.

[0063] In the embodiments of this application, the two second sidewalls 113c and the two first sidewalls 113b can be symmetrically distributed on opposite sides of the top wall 113a so that the first air guide channel 113 has a left-right symmetrical structure, which is beneficial to the uniformity of air supply.

[0064] In the embodiments of this application, the second sidewall 113c and the first sidewall 113b are also set at an angle. The angle between the second sidewall 113c and the first sidewall 113b can be 0~180°. When the angle between the second sidewall 113c and the first sidewall 113b is 0 or 180°, there is no angle between the second sidewall 113c and the first sidewall 113b, that is, the second sidewall 113c and the first sidewall 113b are parallel and connected.

[0065] In the embodiments of this application, the top wall 113a, the two first side walls 113b and the two second side walls 113c can all be planar, or all be curved, or part of them can be planar and the other part can be curved.

[0066] For details, please refer to Figure 5 The included angle between the two second sidewalls 113c is δ1, where 50°≤δ1≤100°.

[0067] Here, the included angle between the two second sidewalls 113c is an acute or obtuse angle, so that the intersection of the two second sidewalls 113c can form a pointed part, which helps to reduce wind resistance and operating noise.

[0068] For more specific details, please refer to Figure 5 The included angle between the second sidewall 113c and the first sidewall 113b is δ2, where 90°≤δ2<180°.

[0069] Here, the angle between the second sidewall 113c and the first sidewall 113b is an obtuse angle, so that the second sidewall 113c and the first sidewall 113b are not coplanar, which is conducive to multi-angle air supply.

[0070] For more specific details, please refer to Figure 5 The included angle between the top wall 113a and the first side wall 113b is δ5, where 75°≤δ5≤120°.

[0071] Here, the angle between the top wall 113a and the first side wall 113b is an obtuse angle, so that the top wall 113a and the first side wall 113b are not coplanar, which is conducive to multi-angle air supply.

[0072] In the embodiments of this application, δ1+2*δ2+2*δ5=540°, that is, the first air guide channel 113 is pentagonal. In other embodiments, δ1+2*δ2+2*δ5 can also be other values, and correspondingly, the first air guide channel 113 has other shapes.

[0073] Please refer to Figure 5 In two adjacent air supply grilles 110, the included angle between the second side wall 113c of one air supply grille 110 and the second side wall 113c of the other air supply grille 110 is δ3, where 60°≤δ3≤110°.

[0074] It is understandable that in two adjacent air supply grilles 110, an air passage 115 is formed between the second side wall 113c of one air supply grille 110 and the second side wall 113c of the other air supply grille 110.

[0075] Here, since the included angle between the second sidewall 113c of one air supply grille 110 and the second sidewall 113c of the other air supply grille 110 will affect the size of the air passage 115, by limiting the range of the included angle δ3, the air passage 115 can deliver air smoothly without affecting the structural strength of the air supply grille 110.

[0076] Further, please refer to Figure 6 and Figure 5In two adjacent air supply grilles 110, the maximum distance between the second side wall 113c of one air supply grille 110 and the second side wall 113c of the other air supply grille 110 is Φ4, where Φ4≤12mm.

[0077] Here, since the maximum distance between the second sidewall 113c of one air supply grille 110 and the second sidewall 113c of the other air supply grille 110 will affect the size of the air passage 115, by limiting the range of Φ4, the air passage 115 can deliver air smoothly without affecting the structural strength of the air supply grille 110.

[0078] Please refer to Figure 6 and Figure 5 The first air guide channel 113 has a first root 113d and a first top 113e at one end near the second air guide channel 114. The maximum spacing of the first root 113d is Φ1, where Φ1 ≤ 12 mm.

[0079] It is understandable that the first root 113d is located at the end of the first air guide channel 113 near the second air guide channel 114. The spacing of the first root 113d will affect the air supply area at the end of the first air guide channel 113 near the second air guide channel 114. By limiting the maximum spacing of the first root 113d, the air supply area can meet the usage requirements without affecting the structural strength of the air supply grille 110.

[0080] For a specific embodiment, please refer to Figure 6 and Figure 5 The first air guide channel 113 has a first top 113e at the end away from the second air guide channel 114, and the maximum spacing of the first top 113e is Φ2, where Φ1≤Φ2≤12mm.

[0081] It should be noted that the first top 113e and the first root 113d are arranged radially opposite each other along the mesh cover. The spacing of the first top 113e will affect the air delivery area of ​​the end of the first air guide channel 113 away from the second air guide channel 114. By limiting the maximum spacing of the first top 113e, the air delivery area can meet the usage requirements without affecting the structural strength of the air delivery grille 110.

[0082] Please refer to Figure 6 and Figure 5 The second air guide channel 114 has a second top 114a at one end near the first air guide channel 113, and the maximum spacing of the second top 114a is Φ3, where Φ3≤12mm.

[0083] Here, the second top 114a is located at the end of the second air guide channel 114 near the first air guide channel 113. The spacing of the second top 114a will affect the air supply area at the end of the second air guide channel 114 near the first air guide channel 113. By limiting the maximum spacing of the second top 114a, the air supply area can meet the usage requirements without affecting the structural strength of the air supply grille 110.

[0084] Please refer to Figures 1 to 3 The mesh cover also includes a second air supply component 200, which surrounds the outer periphery of each of the first ribs 112.

[0085] 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.

[0086] 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.

[0087] In the embodiments of this application, the second air supply component 200 and the first air supply component 100 are integral structures 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.

[0088] For details, please refer to Figure 7 and Figure 8 The second air supply assembly 200 includes at least two second ribs 210. All the second ribs 210 are arranged around the outer periphery of each first rib 112 along the circumference of the mesh cover, and a third air guide channel 220 is formed between two adjacent second ribs 210.

[0089] In the embodiments of this application, the shape and size of each second rib 210 may be exactly the same or different. Each second rib 210 may be constructed as a straight structure or a curved structure. The straight structure may be a straight strip-shaped structure extending radially along the mesh, such as an I-shape or a T-shape. The curved structure may be a smooth and flowing line or a structure with a slight curvature in the shape of a teardrop or similar shape. The second rib 210 is preferably a curved structure.

[0090] In the embodiments of this application, the air supply area of ​​all the third air guide channels 220 may be equal or unequal, that is, the shape of all the third air guide channels 220 may be the same or different.

[0091] For a specific embodiment, please refer to Figure 9Each second rib 210 has a first connecting end 211, which is connected to the second rib 210. The angle between the first connecting end 211 and the axial direction of the mesh cover is θ, where 0°≤θ≤25°.

[0092] It should be noted that the axial direction of the mesh cover is... Figure 9 The angle between the first connecting end 211 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 θ to 0°~25°, during fan operation, as the airflow is transmitted outward along the end face of the first connecting end 211, wind resistance can be reduced and the airflow area can be increased.

[0093] In the embodiments of this application, the included angles between the first connecting ends 211 of all the second ribs 210 and the axial direction of the mesh cover are all equal, so as to facilitate the uniformity of air supply.

[0094] For a specific embodiment, please refer to Figure 10 Each second rib 210 has a second connecting end 212, which is the end away from the second rib 210. The angle between the second connecting end 212 and the axial direction of the mesh cover is β, where 0°≤β≤25°.

[0095] Understandably, the angle between the second connecting end 212 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 β to 0°~25°, during fan operation, as the airflow travels outward along the end face of the second connecting end 212, wind resistance is reduced and the airflow area is increased.

[0096] In the embodiments of this application, the included angles between the second connecting ends 212 of all the second ribs 210 and the axial direction of the mesh cover are equal, so as to facilitate the uniformity of air supply.

[0097] Please refer to Figure 11 and Figure 1 The mesh cover also includes a third air supply component 300, which surrounds the outer periphery of the second air supply component 200.

[0098] Understandably, the third air supply component 300 is arranged around the second air supply component 200, which can both expand the air supply area of ​​the mesh cover and strengthen the structural strength of the mesh cover.

[0099] For details, please refer to Figure 11The third air supply assembly 300 includes a partition ring 310, a connecting ring 320, and at least two third ribs 330. The partition ring 310 surrounds the outer periphery of the second air supply assembly 200, the connecting ring 320 surrounds the outer periphery of the partition ring 310, and each third rib 330 is disposed between the partition ring 310 and the connecting ring 320, and a fourth air guide channel 340 is formed between two adjacent third ribs 330.

[0100] It should be noted that one end of all the third ribs 330 is connected to the partition ring 310, and the other end of all the third ribs 330 is connected to the connecting ring 320, so that each third rib 330 is located between the partition ring 310 and the connecting ring 320.

[0101] In the embodiments of this application, the shape and size of each third rib 330 may be exactly the same or different. Each third rib 330 may be constructed as a straight structure or a curved structure. The straight structure may be a straight strip-shaped structure extending radially along the mesh, such as an I-shape or a T-shape. The curved structure may be a smooth and flowing line or a structure with a slight curvature, resembling a teardrop shape or a similar shape. The third rib 330 is preferably a curved structure.

[0102] In the embodiments of this application, both the partition ring 310 and the connecting ring 320 are hollow annular structures, which can be circular, elliptical, or other ring-shaped structures. The central axes of the partition ring 310 and the connecting ring 320 overlap, that is, the connecting ring 320 and the partition ring 310 are coaxially arranged, which also means that the second air supply assembly 200 and the third air supply assembly 300 are coaxially arranged, which is beneficial to the uniformity and concentration of air supply.

[0103] In the embodiments of this application, the partition ring 310, the connecting ring 320 and each of the second ribs 210 are integral structures. The partition ring 310, the connecting ring 320 and each of the second ribs 210 can be integrally formed by casting, injection molding and other methods, which has good integrity and high mechanical strength.

[0104] In the embodiments of this application, the air supply area of ​​all the fourth air guide channels 340 may be equal or unequal, that is, the shape of all the fourth air guide channels 340 may be the same or different.

[0105] For a specific embodiment, please refer to Figure 11 Each third rib 330 has a third connecting end 331, which is connected to the partition ring 310. The angle between the third connecting end 331 and the axial direction of the mesh cover is α1, where 0°≤α1≤25°.

[0106] It should be noted that the angle between the third connecting end 331 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 third connecting end 331, wind resistance can be reduced and the airflow area can be increased.

[0107] In the embodiments of this application, the included angles between the third connecting end 331 of all the third ribs 330 and the axial direction of the mesh cover are all equal, so as to facilitate the uniformity of air supply.

[0108] For a specific embodiment, please refer to Figure 12 Each third rib 330 also has a fourth connecting end 332, which is connected to the connecting ring 320. The angle between the fourth connecting end 332 and the axial direction of the mesh cover is α2, where 10°≤α2≤40°.

[0109] Understandably, the angle between the fourth connecting end 332 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 fourth connecting end 332, wind resistance is reduced and the airflow area is increased.

[0110] In the embodiments of this application, the included angles between the fourth connecting end 332 of all the third ribs 330 and the axial direction of the mesh cover are all equal, so as to facilitate the uniformity of air supply.

[0111] Please refer to Figure 1 In one embodiment, the fan includes the aforementioned mesh cover.

[0112] 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.

[0113] In the aforementioned fan, the first ends 112a of all the first ribs 112 converge together and are connected to the air supply body 111, and the second ends 112b of all the first ribs 112 are spaced apart along the circumference of the mesh cover. That is, the first air guide channel 113 and the second air guide channel 114 are arranged sequentially along the radial direction of the mesh cover, and each second air guide channel 114 is distributed along the mesh cover from the convergence point, which enhances the airflow distribution in the circumference and radial direction of the mesh cover, realizes multi-path airflow, and effectively reduces wind resistance and operating noise.

[0114] 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.

[0115] 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 air supply body (111) and at least two first ribs (112). The first ends (112a) of all the first ribs (112) are gathered together and connected to the air supply body (111), and the second ends (112b) of all the first ribs (112) are spaced apart along the circumference of the mesh cover. The air supply body (111) has a first air guide channel (113), and a second air guide channel (114) is formed between every two adjacent first ribs (112).

2. The mesh cover according to claim 1, characterized in that, The included angle between two adjacent first ribs (112) is δ4, 30°≤δ4≤70°.

3. The mesh cover according to claim 1, characterized in that, The first air guide channel (113) has a top wall (113a), two first side walls (113b) and two second side walls (113c). The two second side walls (113c) are arranged at an angle, and each second side wall (113c) is connected to one first side wall (113b). The top wall (113a) is connected between the two first side walls (113b). The top wall (113a), the two first side walls (113b) and the two second side walls (113c) are arranged to form the first air guide channel (113).

4. The mesh cover according to claim 3, characterized in that, The included angle between the two second sidewalls (113c) is δ1, 50°≤δ1≤100°.

5. The mesh cover according to claim 3, characterized in that, The angle between the second sidewall (113c) and the first sidewall (113b) is δ2, where 90°≤δ2<180°.

6. The mesh cover according to claim 3, characterized in that, The included angle between the top wall (113a) and the first side wall (113b) is δ5, where 75°≤δ5≤120°.

7. The mesh cover according to claim 3, characterized in that, In two adjacent air supply grilles (110), the included angle between the second sidewall (113c) of one air supply grille (110) and the second sidewall (113c) of the other air supply grille (110) is δ3, 60°≤δ3≤110°.

8. The mesh cover according to claim 3, characterized in that, In two adjacent air supply grilles (110), the maximum distance between the second sidewall (113c) of one air supply grille (110) and the second sidewall (113c) of the other air supply grille (110) is Φ4, where Φ4≤12mm.

9. The mesh cover according to claim 1, characterized in that, The first air guide channel (113) has a first root (113d) at one end near the second air guide channel (114), and the maximum spacing of the first root (113d) is Φ1, where Φ1≤12mm.

10. The mesh cover according to claim 9, characterized in that, The first air guide channel (113) has a first top (113e) at the end away from the second air guide channel (114), and the maximum spacing of the first top (113e) is Φ2, Φ1≤Φ2≤12mm.

11. The mesh cover according to claim 1, characterized in that, The second air guide channel (114) has a second top (114a) at one end near the first air guide channel (113), and the maximum spacing of the second top (114a) is Φ3, where Φ3≤12mm.

12. The mesh cover according to claim 1, 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 at least two second ribs (210), all of which are arranged around the outer periphery of each first rib (112) along the circumference of the mesh cover, and a third air guide channel (220) is formed between two adjacent second ribs (210).

14. The mesh cover according to claim 13, characterized in that, Each of the second reinforcing bars (210) has a first connecting end (211), which is connected to the second reinforcing bar (210). The angle between the first connecting end (211) and the axial direction of the mesh cover is θ, where 0°≤θ≤25°.

15. The mesh cover according to claim 13, characterized in that, Each of the second ribs (210) has a second connecting end (212), which is the end away from the second rib (210), and the angle between the second connecting end (212) and the axial direction of the mesh is β, where 0°≤β≤25°.

16. The mesh cover according to claim 12, characterized in that, The mesh cover also includes a third air supply component (300), which surrounds the outer periphery of the second air supply component (200).

17. The mesh cover according to claim 16, characterized in that, The third air supply assembly (300) includes a partition ring (310), a connecting ring (320), and at least two third ribs (330). The partition ring (310) surrounds the outer periphery of the second air supply assembly (200), and the connecting ring (320) surrounds the outer periphery of the partition ring (310). Each of the third ribs (330) is located between the partition ring (310) and the connecting ring (320), and a fourth air guide channel (340) is formed between two adjacent third ribs (330).

18. The mesh cover according to claim 17, characterized in that, Each of the third ribs (330) has a third connecting end (331), which is connected to the partition ring (310). The angle between the third connecting end (331) and the axial direction of the mesh cover is α1, where 0°≤α1≤25°.

19. The mesh cover according to claim 17, characterized in that, Each of the third ribs (330) also has a fourth connecting end (332), which is connected to the connecting ring (320). The angle between the fourth connecting end (332) and the axial direction of the mesh cover is α2, where 10°≤α2≤40°.

20. A fan, characterized in that, Includes the mesh cover as described in any one of claims 1-19.

Images