A fan cover structure and a fan
Patent Information
- Application Number
- CN202522279326.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-10-28
AI Technical Summary
[0002]在风扇的结构中，风罩结构作为送风结构，其通常包括可拆卸式连接的前网和后网罩，在风扇工作时，风罩结构内的扇叶在电机的带动下转动，气流先通过后网罩进入风罩结构内，再通过前网送出以实现送风；然而，由于前网直线风道的结构限制，风罩结构通常仅能轴向直线送风，从而导致送风方式较为单一，影响用户体验
风罩结构的前网以可拆装方式安装于第一安装口处，且前网相对的两侧面可选择性地朝向后网罩，也就是说，前网能够双面安装，无需区分安装方向即可完成拆装；其次，前网的多个出风风道间隔分布于同一圆周内，由于出风风道的一端开口处的气流运动方向与第一安装口的中轴线方向平行，在该端开口位于网罩结构的正面时，网罩结构能够轴向直线出风；由于出风风道的另一端出口处的气流运动方向与第一安装口的中轴线方向相交，在该端开口位于网罩结构的正面时，网罩结构能够非轴向扩散出风；综上，本实用新型的风罩结构打破了相关技术中前网仅能轴向直线送风的局限，丰富了送风方式，进而改善了用户体验。
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Figure CN224706034U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fan technology, and more specifically, to a fan cover structure and a fan. Background Technology
[0002] In the structure of a fan, the fan cover structure serves as the air delivery structure. It typically includes a detachable front grille and a rear grille. When the fan is working, the fan blades inside the fan cover structure rotate under the drive of the motor. The airflow first enters the fan cover structure through the rear grille and then is delivered through the front grille to achieve air delivery. However, due to the structural limitations of the straight air duct of the front grille, the fan cover structure can usually only deliver air in a straight axial direction, resulting in a relatively simple air delivery method and affecting the user experience. Utility Model Content
[0003] To solve the above problems, this utility model provides a fan cover structure and a fan.
[0004] In a first aspect, this utility model provides a wind shield structure, including a front net and a rear net cover; the rear net cover has a first mounting opening; the front net is used to be detachably installed at the first mounting opening, and the two opposite sides of the front net can selectively face the rear net cover; the front net is provided with a plurality of air outlet ducts penetrating its opposite sides, and the plurality of air outlet ducts are spaced apart within the same circumference; along the central axis direction of the first mounting opening, the airflow direction at one end of the air outlet duct is parallel to the central axis direction of the first mounting opening, and the airflow direction at the other end of the air outlet duct intersects the central axis direction of the first mounting opening.
[0005] Optionally, at least a portion of the front mesh is located within the first mounting opening and is detachably connected to the rear mesh cover; Alternatively, the front net includes an outer frame, with a second mounting port and a third mounting port at both ends along its axial direction, and the portion of the rear net cover with the first mounting port is inserted into the second mounting port or the third mounting port of the front net and is detachably connected to the rear net cover.
[0006] Optionally, the shroud structure further includes a first connecting structure and a second connecting structure; the circumferential edge of the front net is provided with the first connecting structure; the circumferential edge of the rear net is provided with the second connecting structure; the first connecting structure and the second connecting structure are used for rotational fastening to connect the front net and the rear net.
[0007] Optionally, the front net and the rear net cover are connected by multiple sets of the first connection structure and the second connection structure, and the multiple sets of the first connection structure and the second connection structure are evenly distributed.
[0008] Optionally, when at least a portion of the front mesh is located within the first mounting opening and is detachably connected to the rear mesh cover, the outer contour shape of the front mesh is circular. The first connecting structure is a first fixing groove disposed on the circumferential sidewall of the front mesh. The first fixing groove includes a first groove unit and a second groove unit. The first groove unit extends along the thickness direction of the front mesh. One end of the second groove unit is connected to the first groove unit, and the other end extends along the circumferential direction of the front mesh. The second connecting structure is a first protrusion disposed on the inner wall of the first mounting opening. The first protrusion is used to pass through the first groove unit to reach the communication point between the first groove unit and the second groove unit, and to be engaged in the second groove unit when the front mesh and the rear mesh cover rotate relative to each other.
[0009] Optionally, when the portion of the rear mesh cover with the first mounting opening is inserted into the second mounting opening or the third mounting opening of the front mesh cover and is detachably connected to the rear mesh cover, the outer contour of the portion of the rear mesh cover with the first mounting opening is circular. The first connecting structure is a second protrusion disposed on the inner wall of the second mounting port or the third mounting port; the second connecting structure is a second fixing groove disposed on the circumferential side wall of the rear mesh cover; the second fixing groove includes a third groove unit and a fourth groove unit; the third groove unit extends along the central axis of the first mounting port, and one end of the third groove unit extends to the edge of the first mounting port; one end of the fourth groove unit is connected to the third groove unit, and the other end extends circumferentially along the circumferential side wall of the rear mesh cover; the second protrusion is used to pass through the third groove unit to reach the communication point between the third groove unit and the fourth groove unit, and to be engaged in the fourth groove unit when the front mesh and the rear mesh cover rotate relative to each other.
[0010] Optionally, one end of the air outlet duct is a straight duct section, and the airflow direction of the straight duct section is parallel to the central axis direction of the first mounting port; the other end of the air outlet duct is an arc-shaped duct section or an inclined duct section that is inclined relative to the straight duct section, and the airflow direction of the arc-shaped duct section and the inclined duct section intersects the central axis direction of the first mounting port.
[0011] Optionally, the front mesh includes multiple partitions spaced apart within the same circumference, with adjacent partitions forming the air outlet duct; each partition includes a first plate and a second plate connected along the central axis of the first mounting opening, the first plate being a straight plate, and the second plate being an arc-shaped plate or a straight plate set at an angle relative to the first plate.
[0012] Optionally, the front mesh is provided with multiple rings of accommodating space along the radial direction, and each ring of accommodating space has multiple air outlet ducts distributed at intervals along the same circumference.
[0013] Secondly, this utility model provides a fan, including the fan cover structure described above.
[0014] Compared with related technologies, the beneficial effects of this utility model are as follows: The front mesh of the hood structure is detachably installed at the first mounting port, and the two opposite sides of the front mesh can selectively face the rear mesh cover. In other words, the front mesh can be installed on both sides without distinguishing the installation direction. Secondly, the multiple air outlet ducts of the front mesh are distributed at intervals within the same circumference. Since the airflow direction at one end of the air outlet duct is parallel to the central axis of the first mounting port, the mesh cover structure can axially and linearly discharge air when that end opening is located on the front of the mesh cover structure. Since the airflow direction at the other end of the air outlet duct intersects the central axis of the first mounting port, the mesh cover structure can non-axially diffuse air discharge when that end opening is located on the front of the mesh cover structure. In summary, the hood structure of this utility model breaks the limitation of the front mesh in related technologies that can only deliver air in an axial and linear manner, enriches the air delivery methods, and thus improves the user experience. Attached Figure Description
[0015] Figure 1 An exploded view of the wind shield structure according to an embodiment of this utility model. Figure 1 ; Figure 2 This is one air delivery method of the fan according to an embodiment of the present utility model; Figure 3 This is another air delivery method of the fan according to an embodiment of the present utility model; Figure 4 An exploded view of the wind shield structure according to an embodiment of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the wind shield structure according to an embodiment of the present utility model.
[0016] Explanation of reference numerals in the attached figures: 100. Front grille; 101. Air outlet duct; 102. Second mounting port; 103. Third mounting port; 104. Outer frame; 200. Rear grille cover; 201. First mounting port; 300. First fixing groove; 301. First groove unit; 302. Second groove unit; 400. First protrusion; 500. Second protrusion; 600. Second fixing groove; 601. Third groove unit; 602. Fourth groove unit; 700. Partition; 701. First plate; 702. Second plate. Detailed Implementation
[0017] To make the above-mentioned objects, features and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model.
[0018] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "optionally" means "optional embodiments". Definitions of other terms will be given in the description below. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0019] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] The wind shield structure of this utility model embodiment includes a front net 100 and a rear net cover 200; the rear net cover 200 has a first mounting opening 201; the front net 100 is used to be detachably installed at the first mounting opening 201, and the two opposite sides of the front net 100 can selectively face the rear net cover 200; the front net 100 is provided with a plurality of air outlet ducts 101 penetrating its opposite sides, and the plurality of air outlet ducts 101 are spaced apart within the same circumference; the airflow direction at one end of the air outlet duct 101 along the central axis direction of the first mounting opening 201 is parallel to the central axis direction of the first mounting opening 201, and the airflow direction at the other end of the air outlet duct 101 intersects the central axis direction of the first mounting opening 201.
[0021] Specifically, such as Figure 1 As shown, the front end of the rear mesh cover 200 is provided with a circular first mounting port 201. The front mesh 100 is installed in a detachable manner at the first mounting port 201, and the front mesh 100 does not need to distinguish between the front and back during installation. Multiple air outlet ducts 101 provided on the front mesh 100 are distributed at intervals within the same circumference, and along the central axis of the first mounting port 201, the airflow direction at both ends of the air outlet duct 101 is parallel to the central axis of the first mounting port 201 and intersects at an obtuse angle.
[0022] In this embodiment, the front mesh 100 of the hood structure is detachably installed at the first mounting port 201, and the two opposite sides of the front mesh 100 can selectively face the rear mesh 200. That is, the front mesh 100 can be installed on both sides without needing to distinguish the installation direction for installation and removal. Secondly, the multiple air outlet ducts 101 of the front mesh 100 are spaced apart within the same circumference. Since the airflow direction at one end of the air outlet duct 101 is parallel to the central axis of the first mounting port 201, when this end opening is located on the front of the mesh structure, the mesh structure can axially discharge air in a straight line, achieving the desired effect. Figure 2 As shown; because the airflow direction at the other end of the air outlet 101 intersects the central axis of the first mounting port 201, when the opening at that end is located on the front of the mesh structure, the mesh structure can diffuse the air out non-axially, with the effect as follows. Figure 3 As shown; in summary, the wind shield structure of this utility model breaks the limitation of the front net 100 in related technologies that can only deliver air in a straight axial direction, enriches the air delivery methods, and thus improves the user experience.
[0023] Optionally, at least a portion of the front mesh 100 is located within the first mounting port 201 and is detachably connected to the rear mesh cover 200.
[0024] Specifically, such as Figure 2 , 3 As shown, the front net 100 is located entirely within the first mounting port 201 and is detachably connected to the rear net cover 200, and the circumferential sidewall of the front net 100 is in contact with the inner wall of the first mounting port 201.
[0025] In other embodiments, the front net 100 may also be partially located within the first mounting port 201. This is not a limitation and depends on the actual needs.
[0026] Optionally, the front net 100 includes an outer frame 104, with a second mounting port 102 and a third mounting port 103 at both ends along its axial direction. The portion of the rear net cover 200 with a first mounting port 201 is inserted into the second mounting port 102 or the third mounting port 103 of the front net 100 and is detachably connected to the rear net cover 200.
[0027] Specifically, such as Figure 4 As shown, the outer frame 104 has a second mounting port 102 and a third mounting port 103 at both ends along its axial direction. A grid structure is installed inside the outer frame 104, and the grid structure forms an air outlet duct 101. The second mounting port 102 and the third mounting port 103 have the same shape and size, and are symmetrically arranged with respect to the air outlet duct 101 of the front grille 100. Figure 5As shown, when the front net 100 is assembled onto the rear net cover 200, the front end of the rear net cover 200 is inserted into the second mounting port 102 or the third mounting port 103 of the front net 100 and is detachably connected to the rear net cover 200, and the inner wall of the second mounting port 102 or the third mounting port 103 is in contact with the outer wall of the front end of the rear net cover 200.
[0028] Optionally, the shroud structure further includes a first connecting structure and a second connecting structure; the circumferential edge of the front net 100 is provided with the first connecting structure; the circumferential edge of the rear net 200 is provided with the second connecting structure; the first connecting structure and the second connecting structure are used for rotational fastening so that the front net 100 and the rear net 200 are connected.
[0029] In this optional embodiment, the first and second connecting structures of the fan cover structure are engaged by rotational fastening, which not only eliminates the need for tools for disassembly and assembly and simplifies the process, but also greatly improves the efficiency of disassembly and assembly of the front net 100 and the rear net cover 200. Furthermore, it forms a circumferential interlocking limit, enhances connection stability, and prevents the fan cover structure from loosening during fan operation.
[0030] Optionally, the front net 100 and the rear net cover 200 are connected by multiple sets of first connecting structures and second connecting structures, and the multiple sets of first connecting structures and second connecting structures are evenly distributed.
[0031] Specifically, such as Figure 1 As shown, a first connecting structure and a second connecting structure form a group, and the front net 100 and the rear net cover 200 are connected by multiple groups of first connecting structures and second connecting structures located in the same circumference.
[0032] In this optional embodiment, the front net 100 and the rear net cover 200 are connected by multiple sets of evenly distributed first and second connecting structures, which can distribute the force evenly along the circumference, avoid excessive local stress that could lead to structural deformation or damage, and thus improve the overall structural strength of the wind cover structure.
[0033] Optionally, when at least a portion of the front net 100 is located within the first mounting opening 201 and is detachably connected to the rear net cover 200, the outer contour of the front net 100 is circular; the first connecting structure is a first fixing groove 300 disposed on the circumferential sidewall of the front net 100, the first fixing groove 300 including a first groove unit 301 and a second groove unit 302; the first groove unit 301 extends along the thickness direction of the front net 100; one end of the second groove unit 302 is connected to the first groove unit 301, and the other end extends along the circumferential direction of the front net 100; the second connecting structure is a first protrusion 400 disposed on the inner wall of the first mounting opening 201; the first protrusion 400 is used to pass through the first groove unit 301 to reach the connection between the first groove unit 301 and the second groove unit 302, and is engaged in the second groove unit 302 when the front net 100 and the rear net cover 200 rotate relative to each other.
[0034] Specifically, the number of first fixing slots 300 can be one, two, or three, etc., without specific limitations, depending on actual needs. At the same time, at least one second slot unit 302 can be provided on one side of the extension direction of the first slot unit 301, or at least one second slot unit 302 can be provided on both sides of the extension direction of the first slot unit 301.
[0035] As shown in the figure, the first groove unit 301 extends along the thickness direction of the front mesh 100 to form inlets on the front and rear faces of the outer frame 104 of the front mesh 100, thereby allowing the first protrusion 400 to enter or exit the first groove unit 301; one end of the second groove unit 302 is connected to the middle position of the first groove unit 301, and the other end extends along the circumference of the front mesh 100; during assembly, the first protrusion 400 first passes through the inlet of the first groove unit 301 to reach the connection between the first groove unit 301 and the second groove unit 302, and then gets stuck in the second groove unit 302 when the front mesh 100 and the rear mesh cover 200 rotate relative to each other, until the front mesh 100 and the rear mesh cover 200 can no longer continue to rotate relative to each other, thereby achieving the axial and radial limiting of the front mesh 100 and the rear mesh cover 200.
[0036] In this optional embodiment, the outer contour of the front net 100 is circular. With the cooperation structure of the first fixing groove 300 and the first protrusion 400 of the "first groove unit 301 + second groove unit 302", it can be quickly disassembled and assembled by inserting the first protrusion 400 along the inlet of the first groove unit 301 and rotating it into the second groove unit 302, thereby meeting the requirement of double-sided installation of the front net 100. At the same time, the multiple evenly distributed sets of this structure can also make the circumferential force of the wind cover structure balanced, taking into account the convenience of disassembly and assembly, installation flexibility and connection stability.
[0037] Optionally, when the portion of the rear mesh cover 200 with the first mounting opening 201 is inserted into the second mounting opening 102 or the third mounting opening 103 of the front mesh 100 and is detachably connected to the rear mesh cover 200, the outer contour of the portion of the rear mesh cover 200 with the first mounting opening 201 is circular; the first connecting structure is a second protrusion 500 provided on the inner wall of the second mounting opening 102 or the third mounting opening 103; the second connecting structure is a second fixing groove 600 provided on the circumferential side wall of the rear mesh cover 200; the second fixing groove 600 includes a third groove unit 60 1 and fourth slot unit 602; third slot unit 601 extends along the central axis of the first mounting port 201, and one end of the third slot unit 601 extends to the edge of the first mounting port 201; one end of the fourth slot unit 602 is connected to the third slot unit 601, and the other end extends circumferentially along the circumferential side wall of the rear mesh cover 200; the second protrusion 500 is used to pass through the third slot unit 601 to reach the connection between the third slot unit 601 and the fourth slot unit 602, and is inserted into the fourth slot unit 602 when the front mesh 100 and the rear mesh cover 200 rotate relative to each other.
[0038] Specifically, the number of second fixing slots 600 can be one, two, or three, etc., without limitation, depending on actual needs. At the same time, at least one fourth slot unit 602 can be provided on one side of the extension direction of the third slot unit 601, or at least one fourth slot unit 602 can be provided on both sides of the extension direction of the third slot unit 601.
[0039] like Figure 4 As shown, the third groove unit 601 is disposed on the inner wall of the first mounting port 201 and extends along the central axis of the first mounting port 201 to the edge of the first mounting port 201 to form an inlet at the edge of the first mounting port 201, thereby allowing the second protrusion 500 to enter or exit the third groove unit 601; one end of the fourth groove unit 602 is connected to the end of the third groove unit 601 away from the edge of the first mounting port 201, and the other end extends circumferentially along the circumferential side wall of the rear mesh cover 200; during assembly, the second protrusion 500 first passes through the third groove unit 601 to reach the connection between the third groove unit 601 and the fourth groove unit 602, and then gets stuck in the fourth groove unit 602 when the front mesh 100 and the rear mesh cover 200 rotate relative to each other, until the front mesh 100 and the rear mesh cover 200 can no longer continue to rotate relative to each other, thereby achieving the axial and radial limiting of the front mesh 100 and the rear mesh cover 200.
[0040] In this optional embodiment, the outer contour of the portion of the rear mesh cover 200 with the first mounting port 201 is circular. Combined with the cooperation structure of the second fixing groove 600 of the "third groove unit 601 + fourth groove unit 602" and the second protrusion 500, the circular contour can ensure the coaxiality of the front mesh 100 when it is fitted through the second mounting port 102 or the third mounting port 103. It can also allow the second protrusion 500 to be inserted along the third groove unit 601 and rotated into the fourth groove unit 602 to achieve quick assembly and disassembly.
[0041] Optionally, one end of the air outlet duct 101 is a straight duct section, and the airflow direction of the straight duct section is parallel to the central axis direction of the first mounting port 201; the other end of the air outlet duct 101 is an arc-shaped duct section or an inclined duct section that is inclined relative to the straight duct section, and the airflow direction of the arc-shaped duct section and the inclined duct section intersects with the central axis direction of the first mounting port 201.
[0042] Specifically, one end of the air outlet duct 101 is a straight duct section, and the other end is an arc-shaped duct section. When the straight duct section is located on the front side of the hood structure, the airflow direction of the straight duct section is parallel to the central axis direction of the first mounting port 201, and is used for axial straight air supply. When the arc-shaped duct section is located on the front side of the hood structure, the airflow direction of the arc-shaped duct section intersects with the central axis direction of the first mounting port 201, and is used for non-axial diffusion air supply.
[0043] In other embodiments, the other end of the air outlet duct 101 may also be an inclined duct section that is inclined relative to the straight duct section. There are no specific restrictions here, and it depends on the actual needs.
[0044] Optionally, the front grille 100 includes multiple partitions 700 spaced apart within the same circumference, with adjacent partitions 700 forming an air outlet duct 101; each partition 700 includes a first plate 701 and a second plate 702 connected along the central axis of the first mounting opening 201, the first plate 701 being a straight plate, and the second plate 702 being an arc-shaped plate or a straight plate set at an angle relative to the first plate 701.
[0045] Specifically, there is no specific limit to the number of 700 partitions; it depends on actual needs. For example... Figure 1 As shown, the multiple partitions 700 of the front mesh 100 are distributed at intervals within the same circumference, and the air outlet duct 101 is formed between two adjacent partitions 700; in the structure of a single partition 700, the first plate 701 and the second plate 702 are connected along the central axis of the first mounting port 201, wherein the first plate 701 is a straight plate and the second plate 702 is an arc-shaped plate.
[0046] In other embodiments, the second plate 702 may also be a straight plate that is angled relative to the first plate 701. No specific limitation is made here, and it depends on the actual needs.
[0047] Optionally, the front grille 100 is provided with multiple rings of accommodating space in the radial direction, and each ring of accommodating space has multiple air outlet ducts 101 distributed at intervals along the same circumference.
[0048] Specifically, there is no specific limit to the number of storage spaces; it depends on actual needs, and adjacent storage spaces are separated by a shared circular ring. For example... Figure 1 As shown, the front mesh 100 has two rings of accommodating space along the radial direction. Each ring of accommodating space has multiple partitions 700 distributed at intervals along the same circumference. The multiple partitions 700 are connected to the corresponding rings and form multiple air outlet ducts 101.
[0049] In this optional embodiment, the front mesh 100 is provided with multiple rings of accommodating space along the radial direction, and each ring is evenly arranged with multiple air outlet ducts 101, forming a stable structure similar to a combination of multi-chamber and grille. This structure can evenly distribute the vibration load and stress generated by the airflow impact during fan operation along the multi-ring structure, avoiding deformation or damage to a single ring duct due to local stress concentration. At the same time, the multi-ring arranged accommodating space and the air ducts form a mutually supporting mechanical framework, thereby improving the overall buckling resistance and structural stiffness of the front mesh 100.
[0050] The fan in this embodiment of the utility model, such as Figure 2 , 3 As shown, it includes the wind shield structure described above.
[0051] The fan in this embodiment has the same beneficial effects as the aforementioned fan cover structure relative to related technologies, so it will not be described again here.
[0052] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. A wind shield structure, characterized in that, The device includes a front mesh (100) and a rear mesh cover (200); the rear mesh cover (200) has a first mounting port (201); the front mesh (100) is detachably mounted at the first mounting port (201), and the two opposite sides of the front mesh (100) can selectively face the rear mesh cover (200); the front mesh (100) is provided with a plurality of air outlet ducts (101) penetrating its opposite sides, and the plurality of air outlet ducts (101) are spaced apart within the same circumference; along the central axis of the first mounting port (201), the airflow direction at one end of the air outlet duct (101) is parallel to the central axis of the first mounting port (201), and the airflow direction at the other end of the air outlet duct (101) intersects the central axis of the first mounting port (201).
2. The wind hood structure according to claim 1, characterized in that, At least a portion of the front mesh (100) is located within the first mounting port (201) and is detachably connected to the rear mesh cover (200); Alternatively, the front net (100) includes an outer frame (104), the outer frame (104) having a second mounting port (102) and a third mounting port (103) at both ends along its axial direction, and the rear net cover (200) having the first mounting port (201) is inserted into the second mounting port (102) or the third mounting port (103) of the front net (100) and is detachably connected to the rear net cover (200).
3. The wind hood structure according to claim 2, characterized in that, It also includes a first connecting structure and a second connecting structure; the front net (100) is provided with the first connecting structure on its circumferential edge; the rear net cover (200) is provided with the second connecting structure on its circumferential edge; the first connecting structure and the second connecting structure are used for rotational fastening so that the front net (100) and the rear net cover (200) are connected.
4. The wind hood structure according to claim 3, characterized in that, The front net (100) and the rear net cover (200) are connected by multiple sets of first connection structures and second connection structures, and the multiple sets of first connection structures and second connection structures are evenly distributed.
5. The wind hood structure according to claim 3, characterized in that, When at least a portion of the front net (100) is located within the first mounting port (201) and is detachably connected to the rear net cover (200), the outer contour shape of the front net (100) is circular. The first connecting structure is a first fixing groove (300) disposed on the circumferential sidewall of the front net (100). The first fixing groove (300) includes a first groove unit (301) and a second groove unit (302). The first groove unit (301) extends along the thickness direction of the front net (100). One end of the second groove unit (302) is connected to the first groove unit (301), and the other end extends along the circumferential direction of the front net (100). The second connecting structure is a first protrusion (400) disposed on the inner wall of the first mounting port (201). The first protrusion (400) is used to pass through the first groove unit (301) to reach the communication point between the first groove unit (301) and the second groove unit (302), and to be inserted into the second groove unit (302) when the front net (100) and the rear net cover (200) rotate relative to each other.
6. The wind hood structure according to claim 3, characterized in that, When the portion of the rear mesh cover (200) with the first mounting port (201) is inserted into the second mounting port (102) or the third mounting port (103) of the front mesh (100) and is detachably connected to the rear mesh cover (200), the outer contour of the portion of the rear mesh cover (200) with the first mounting port (201) is circular. The first connecting structure is a second protrusion (500) disposed on the inner wall of the second mounting port (102) or the third mounting port (103); the second connecting structure is a second fixing groove (600) disposed on the circumferential side wall of the rear mesh cover (200); the second fixing groove (600) includes a third groove unit (601) and a fourth groove unit (602); the third groove unit (601) extends along the central axis of the first mounting port (201), and one end of the third groove unit (601) Extending to the edge of the first mounting port (201); one end of the fourth groove unit (602) is connected to the third groove unit (601), and the other end extends circumferentially along the circumferential sidewall of the rear mesh cover (200); the second protrusion (500) is used to reach the connection between the third groove unit (601) and the fourth groove unit (602) through the third groove unit (601), and is inserted into the fourth groove unit (602) when the front mesh (100) and the rear mesh cover (200) rotate relative to each other.
7. The wind hood structure according to claim 1, characterized in that, One end of the air outlet duct (101) is a straight duct section, and the airflow direction of the straight duct section is parallel to the central axis direction of the first mounting port (201); the other end of the air outlet duct (101) is an arc-shaped duct section or an inclined duct section that is inclined relative to the straight duct section, and the airflow direction of the arc-shaped duct section and the inclined duct section intersects the central axis direction of the first mounting port (201).
8. The wind hood structure according to claim 1 or 7, characterized in that, The front mesh (100) includes multiple partitions (700) spaced apart within the same circumference, with adjacent partitions (700) forming the air outlet duct (101); each partition (700) includes a first plate (701) and a second plate (702) connected along the central axis of the first mounting port (201), the first plate (701) being a straight plate, and the second plate (702) being an arc-shaped plate or a straight plate set at an angle relative to the first plate (701).
9. The wind hood structure according to claim 1, characterized in that, The front mesh (100) is provided with multiple rings of accommodating space in the radial direction, and each ring of accommodating space has multiple air outlet ducts (101) distributed at intervals along the same circumference.
10. A fan, characterized in that, Includes the wind shield structure as described in any one of claims 1 to 9.