Mesh cover and fan

Abstract

The invention 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] The present application relates to the technical field of fans, and in particular to a mesh cover and a fan. Background Art

[0002] At present, fans generally use a combination of thin blades and metal or plastic mesh covers, and the fan's air outlet type (wind-gathering or non-wind-gathering type) is changed through the fan's mesh cover to increase wind speed and air volume.

[0003] Due to the high cost of metal mesh covers, they are gradually being replaced by plastic mesh covers. However, plastic mesh covers have the problem of large wind resistance, which will cause a loss of some air volume, resulting in a reduction in the air volume of the fan. Summary of the invention

[0004] Based on this, it is necessary to provide a fan grille and a fan to solve the problem of large wind resistance of the existing fan grille.

[0005] A mesh cover, comprising: a first air supply assembly, comprising at least two air supply grilles, each of which is interconnected as a whole along the circumference of the mesh cover; wherein each of the air supply grilles 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 at the 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 tip. In the above-mentioned mesh cover, in the radial direction of the mesh cover, the second air guide channel is located at the 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 tip, and when the fan is running, air can be supplied through the first air guide channel and the second air guide channel respectively, so as to realize multi-path and multi-angle air flow, enhance airflow distribution, effectively reduce wind resistance and operating noise, and help to strengthen the structural strength of the mesh cover.

[0006] In some embodiments, an end of the first wind guiding channel close to the second wind guiding channel has the tip portion.

[0007] In some embodiments, the first air guiding 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 surround the first air guiding channel, and the tip portion is formed at the intersection of the two second side walls.

[0008] In some embodiments, an angle formed between two of the second side walls is θ2, 0°<θ2≤35°.

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

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

[0011] In some embodiments, the number of the second air guiding channels is two, and the second air guiding channels are spaced apart along the circumference of the mesh cover.

[0012] In some embodiments, the number of the first ribs is three, one of the first ribs extends outward from the intersection of the two second side walls along the radial direction of the mesh cover, and the other two first ribs extend outward from the tangent directions of the two first side walls respectively.

[0013] In some embodiments, the angles formed between every two adjacent first ribs are equal.

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

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

[0016] In some embodiments, the mesh cover further includes a second air supply component, and the second air supply component is disposed around the outer circumference of each of the first ribs.

[0017] In some embodiments, the second air supply assembly includes a separating ring, a connecting ring and at least two second ribs, the separating ring is arranged around the outer circumference of each of the first ribs, the connecting ring is arranged around the outer circumference of the separating ring, each of the second ribs is arranged between the separating ring and the connecting ring, 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, the first connecting end is connected to the separation ring, and an angle formed between the first connecting end and the axial direction of the mesh cover is α1, 0°≤α1≤25°.

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

[0020] In some of the embodiments, each of the second ribs is constructed 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 above-mentioned mesh cover. In the above-mentioned fan, along the radial direction of the mesh cover, the second air guide channel is located at 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 tip portion, and when the fan is running, air can be supplied through the first air guide channel and the second air guide channel respectively, so as to realize multi-path and multi-angle air flow, enhance air flow distribution, effectively reduce wind resistance and operating noise, and help to strengthen the structural strength of the mesh cover. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2 for Figure 1 A front view of the first air supply assembly in the grille is shown.

[0025] Figure 3 for Figure 2 An axonometric view of the air supply grille in the first air supply assembly is shown.

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

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

[0028] Figure 6 for Figure 1 A front view of the second air supply assembly in the grille is shown.

[0029] Figure 7 for Figure 6 A schematic diagram of the second air supply assembly from a first viewing angle is shown.

[0030] Figure 8 for Figure 6 A schematic diagram of the second air supply assembly from a second viewing angle is shown.

[0031] Reference numerals:

[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, separation ring; 220, connecting ring; 230, second rib; 231, first connecting end; 232, second connecting end. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "initial", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] At present, fans generally use a combination of thin blades and metal or plastic mesh covers, and the fan's air outlet type (wind-gathering or non-wind-gathering type) is changed through the fan's mesh cover to increase wind speed and air volume.

[0041] Due to the high cost of metal mesh covers, they are gradually being replaced by plastic mesh covers. However, plastic mesh covers have the problem of large wind resistance, which will cause a loss of some air volume, resulting in a reduction in the air volume of the fan.

[0042] Based on the above considerations, the present 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 supplied through the first air guide channel and the second air guide channel respectively, thereby realizing multi-path and multi-angle air flow, 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, and the first air supply assembly 100 includes at least two air supply grilles 110, and each air supply grille 110 is connected to each other 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, and along the radial direction of the mesh cover, the second air guide channel 102 is located at 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 portion 103.

[0044] It should be noted that the circumference of the mesh cover is Figure 1 and Figure 2 The X direction is shown, and the radial direction of the mesh is Figure 3 In the radial direction of the mesh cover, the second air guide channel 102 is located at the periphery of the first air guide channel 101, which can be understood as follows: the first air guide channel 101 and the second air guide channel 102 are arranged along the radial direction of the mesh cover. Figure 3 The Y direction is shown arranged from inside to outside.

[0045] Here, the mesh cover is applied to the fan, and the mesh cover is arranged on the air outlet surface of the fan (i.e., 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 air flow can be delivered through the first air guide channel 101 and the second air guide channel 102 respectively.

[0046] In the above-mentioned mesh cover, 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 pointed end 103. When the fan is running, air can be supplied through the first air guide channel 101 and the second air guide channel 102 respectively, thereby realizing multi-path and multi-angle air flow, enhancing airflow distribution, effectively reducing wind resistance and operating noise, and helping to strengthen the structural strength of the mesh cover.

[0047] In the embodiment of the present application, each air supply grille 110 is an integrated structure, for example, each air supply grille 110 is integrally formed by casting, injection molding, etc., with good integrity and high mechanical strength. The shape and size of each air supply grille 110 are exactly the same, so as to facilitate uniform air supply.

[0048] In the embodiment of the present application, the air supply areas of the first air guiding channel 101 and the second air guiding channel 102 may be equal or unequal.

[0049] In the embodiments of the present application, only the first air guiding channel 101 may have the tip portion 103 in the radial direction of the mesh cover, or only the second air guiding channel 102 may have the tip portion 103 in the radial direction of the mesh cover, or both the first air guiding channel 101 and the second air guiding channel 102 may have the tip portion 103 in the radial direction of the mesh cover.

[0050] Please refer to Figure 3 The first air guiding channel 101 has a tip portion 103 at one end close to the second air guiding channel 102 .

[0051] It can be understood that, along the radial direction of the mesh cover, the first air guiding channel 101 has a tapered structure from the inside to the outside, which is beneficial to reducing wind resistance and operating noise.

[0052] In the embodiment of the present application, the shape of the tip portion 103 may be a V-shaped, C-shaped or other shaped tip structure, and the specific shape of the tip portion 103 is not limited herein.

[0053] Specifically, please refer to Figure 4 and Figure 5 The first air guiding 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, each second side wall 101c is connected to a first side wall 101b, and 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 guiding channel 101, and the tip portion 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 are arranged to 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 inner walls of the first air guiding channel 101. The tip portion 103 is formed at the intersection of the two second side walls 101c, that is, the tip portion 103 is formed at one end of the first air guiding channel 101 close to the second air guiding channel 102.

[0055] In an embodiment of the present application, the tip portion 103 is formed at the intersection of the two second side walls 101c, and the two second side walls 101c and the two first side walls 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 conducive to the uniformity of air supply.

[0056] In an embodiment of the present application, the second side wall 101c is also arranged at an angle to the first side wall 101b. The angle between the second side wall 101c and the first side wall 101b can be 0~180°. When the angle between the second side wall 101c and the first side wall 101b is 0 or 180°, there is no angle between the second side wall 101c and the first side wall 101b, that is, the second side wall 101c is parallel to and connected to the first side wall 101b.

[0057] In the embodiment of the present 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 embodiment of the present application, the top wall 101a, the two first side walls 101b and the two second side walls 101c may all be planes, or may all be curved surfaces, or may have a portion being a plane and another portion being a curved surface.

[0059] For details about this embodiment, please refer to Figure 4 and Figure 5 , the included angle between the two second side walls 101c is θ2, 0°<θ2≤35°.

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

[0061] For details about this 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, θ3≧90°.

[0062] Here, the angle formed between the top wall 101 a and the first side wall 101 b is a right angle or an obtuse angle, so that the top wall 101 a and the first side wall 101 b 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 of the first ribs 112 are arranged at the same end of the air supply body 111 , a second air guide channel 102 is formed between two adjacent first ribs 112 , and the first air guide channel 101 is arranged on the air supply body 111 .

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

[0065] In the embodiment of the present application, since the first air guide channel 101 is provided in the air supply body 111, and the first air guide channel 101 forms a tip portion 103 at one end close to the second air guide channel 102, 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 sunflower petals, diamonds, or other shapes.

[0066] In the embodiment of the present application, the shapes and sizes of the first ribs 112 may be completely the same or different.

[0067] In the embodiment of the present application, the air supply body 111 and the first ribs 112 are an integrated structure. The air supply body 111 and the first ribs 112 can be integrally formed by casting, injection molding, etc., and have good integrity and high mechanical strength.

[0068] Specifically, please refer to Figure 4 and Figure 2 The number of the second air guiding channels 102 is two, and the second air guiding channels 102 are spaced apart along the circumference of the mesh cover.

[0069] It can be understood that the second air guide channels 102 are spaced apart along the circumference of the mesh cover, that is, the second air guide channels 102 are spaced apart along the circumference of the mesh cover. Figure 2In this way, multi-path and multi-angle airflow can be achieved, and the distribution of airflow in the circumference of the mesh cover is enhanced.

[0070] In the embodiment of the present application, the air supply areas of all the second air guiding channels 102 may be equal or unequal, that is, the shapes of all the second air guiding channels 102 may be the same or different.

[0071] In an embodiment of the present application, all second air guide channels 102 may also form a tip portion 103 at one end close to the first air guide channel 101 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] More specifically, please refer to Figure 5 and Figure 2 There are three first ribs 112, one of which extends outward from the intersection of the two second side walls 101c in the radial direction of the mesh cover, and the other two first ribs 112 extend outward from the tangent directions of the two first side walls 101b respectively.

[0073] It should be noted that one of the first ribs 112 extends outwardly from the intersection of the two second side walls 101c in the radial direction of the mesh cover, that is, from the tip 103 of the first air guide channel 101 along the Figure 5 The other two first ribs 112 extend outward from the tangent directions of the two first side walls 101b, that is, extend outward from the tangent direction L1.

[0074] Through the above arrangement, all the first ribs 112 are arranged at the same end of the air supply body 111, and the extension direction is located on the same side of the air supply body 111, so that two second air guide channels 102 can be formed in the circumferential direction of the mesh cover, which is beneficial to enhance the distribution of airflow in the circumferential direction of the mesh cover.

[0075] Please refer to Figure 5 , the included angles between every two adjacent first ribs 112 are equal.

[0076] It can be understood that the angles formed between every two adjacent first ribs 112 are equal, so that all the first ribs 112 can be evenly distributed along the circumference of the mesh cover, which is beneficial to the uniformity of air supply.

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

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

[0079] For further information, please refer to Figure 4 , each first rib 112 is constructed as a straight structure or a curved structure.

[0080] In the embodiment of the present application, the linear structure can be a linear strip structure extending along the radial direction of the mesh cover, such as I-shaped, T-shaped, etc. In order to maintain the air volume and wind feeling of the first air supply assembly 100, the first rib 112 is preferably a linear structure.

[0081] In the embodiments of the present application, the curved structure may be a smooth and flowing line, a structure with a dotted curvature in a water drop shape or a similar shape, and the curved structure can reduce the resistance encountered during the flow of air.

[0082] Please refer to Figure 6 and Figure 1 The mesh cover further includes a second air supply component 200 , and the second air supply component 200 is disposed around the outer periphery of each first rib 112 .

[0083] It can be understood that the second air supply assembly 200 is disposed around the outer periphery of each first rib 112, which can not only expand the air supply area of ​​the mesh cover, but also enhance the structural strength of the mesh cover.

[0084] In an embodiment of the present 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 arranged on the outer periphery of all first ribs 112 along the radial direction of the mesh cover, which can further expand the air supply area.

[0085] In an embodiment of the present application, the second air supply component 200 and the first air supply component 100 are an integrated 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, etc.

[0086] Specifically, please refer to Figure 6 and Figure 1 The second air supply assembly 200 includes a separating ring 210, a connecting ring 220 and at least two second ribs 230. The separating ring 210 is arranged around the outer periphery of each first rib 112, the connecting ring 220 is arranged around the outer periphery of the separating ring 210, each second rib 230 is arranged between the separating 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 separation ring 210 , and the other end of all the second ribs 230 is connected to the connection ring 220 , so that each second rib 230 is disposed between the separation ring 210 and the connection ring 220 .

[0088] In the embodiment of the present application, the shapes and sizes of the second ribs 230 may be completely the same or different.

[0089] In the embodiment of the present application, the separation ring 210 and the connection ring 220 are both hollow annular structures, and the annular structure may be a circular ring, an elliptical ring, or an annular structure of other shapes.

[0090] In the embodiment of the present application, the separating ring 210, the connecting ring 220 and the second ribs 230 are an integrated structure. The separating ring 210, the connecting ring 220 and the second ribs 230 can be integrally formed by casting, injection molding, etc., with good integrity and high mechanical strength.

[0091] In the embodiment of the present application, the air supply areas of all the third air guiding channels 201 may be equal or unequal, that is, the shapes of all the third air guiding channels 201 may be the same or different.

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

[0093] It should be noted that the angle between the first connection end 231 and the axial direction of the mesh cover is designed so as not to affect the air supply feeling of the fan and to expand the air supply area. By limiting α1 to 0°~25°, when the fan is running, the air flow is transmitted to the outside along the end surface of the first connection end 231, which can reduce wind resistance and expand the air supply area.

[0094] In the embodiment of the present application, the angles formed 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] For further information, please refer to Figure 8 Each second rib 230 also has a second connecting end 232, and the second connecting end 232 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, 10°≤α2≤40°.

[0096] It is understandable that the angle between the second connection end 232 and the axial direction of the mesh cover is designed so as not to affect the air supply feeling of the fan and to expand the air supply area. By limiting α2 to 10° to 40°, when the fan is running, the air flow is transmitted to the outside along the end surface of the second connection end 232, which can reduce wind resistance and expand the air supply area.

[0097] In the embodiment of the present application, the angles formed 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 details about this embodiment, please refer to Figure 8 , each second rib 230 is constructed as a straight structure or a curved structure.

[0099] In the embodiment of the present application, the linear structure can be a linear strip structure extending along the radial direction of the mesh cover, such as I-shaped, T-shaped, etc. In order to maintain the air volume and wind feeling of the first air supply assembly 100, the first rib 112 is preferably a linear structure.

[0100] In the embodiments of the present application, the curved structure may be a smooth and flowing line, a structure with a dotted curvature in a water drop shape or a similar shape, and the curved structure can reduce the resistance encountered during the flow of air.

[0101] For details about this 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 centralization of air supply.

[0103] Please refer to Figure 1 , a fan in one embodiment includes the above-mentioned mesh cover.

[0104] It should be noted that the above-mentioned fan also includes components such as fan blades, and the mesh cover is arranged outside the fan blades to play a role in protection and air supply.

[0105] In the above-mentioned 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 pointed end 103. When the fan is running, air can be supplied through the first air guide channel 101 and the second air guide channel 102 respectively, thereby realizing multi-path and multi-angle air flow, 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-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A mesh cover, characterized in that: include: A first air supply assembly (100) comprises at least two air supply grilles (110), wherein the air supply grilles (110) are interconnected along the circumference of the mesh cover to form a whole; 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 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 portion (103).

2. The mesh cover according to claim 1, characterized in that: An end of the first air guiding channel (101) close to the second air guiding channel (102) has the tip portion (103).

3. The mesh cover according to claim 2, characterized in that: The first air guiding channel (101) comprises 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, each of the second side walls (101c) is connected to one of the first side walls (101b), and 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 portion (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 side walls (101c) is θ2, 0°<θ2≤35°.

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

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

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

8. The mesh cover according to claim 7, characterized in that: The number of the first ribs (112) is three, one of the first ribs (112) extending outwards from the intersection of the two second side walls (101c) in the radial direction of the mesh cover, and the other two first ribs (112) extending outwards from the tangent directions of the two first side walls (101b) respectively.

9. The mesh cover according to claim 8, characterized in that: The included angles between every two adjacent first ribs (112) are equal.

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

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

12. The mesh cover according to claim 6, characterized in that: The mesh cover further comprises a second air supply component (200), wherein the second air supply component (200) is arranged around 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) comprises a separation ring (210), a connecting ring (220) and at least two second ribs (230), wherein the separation ring (210) is arranged around the outer circumference of each of the first ribs (112), the connecting ring (220) is arranged around the outer circumference of the separation ring (210), each of the second ribs (230) is arranged between the separation 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 ribs (230) has a first connecting end (231), the first connecting end (231) being connected to the separation ring (210), and the angle formed between the first connecting end (231) and the axial direction of the mesh cover is α1, 0°≤α1≤25°.

15. The mesh cover according to claim 13, characterized in that: Each of the second ribs (230) further comprises a second connecting end (232), the second connecting end (232) being connected to the connecting ring (220), the angle formed between the second connecting end (232) and the axial direction of the mesh cover being α2, 10°≤α2≤40°.

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

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

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

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