A detachable fan

Abstract

The application relates to a detachable fan, comprising a mounting disc and two or more groups of fan blade modules arranged circumferentially around the mounting disc, each group of fan blade modules comprising a connecting part and at least two blades fixedly installed on the connecting part, the connecting part and the mounting disc being detachably fixedly connected, so that the difficulty of the blade forming process is not substantially increased, the production efficiency is ensured under the premise that the strength of the blades meets the production requirements, the assembling efficiency is improved during the assembling of the fan, and the production cycle is shortened.

Description

Technical Field

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

[0002] As the demand for ventilation and heat dissipation efficiency in heat dissipation equipment increases, the demand for fan blade size continues to grow. The larger the fan blade size, the higher the requirement for blade strength.

[0003] Currently, most fan blades on the market are one-piece designs. With the increasing demands for blade strength, the molding process for one-piece fan blades has become significantly more difficult, and the precision requirements for molds are also higher. Under the dual pressure of strength and process, the costs of materials, molds, process control, and scrap losses have increased, while also extending the production cycle and making it difficult to improve efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide a detachable fan that can balance the difficulty of fan blade forming process and product quality, save production costs, and improve production efficiency.

[0005] This application provides a detachable fan, including a mounting plate and two or more sets of fan blade modules arranged circumferentially around the mounting plate. Each set of fan blade modules includes a connecting part and at least two blades fixedly mounted on the connecting part. The connecting part and the mounting plate are detachably fixedly connected.

[0006] In one embodiment, the connecting part is snapped into and fixed to the mounting plate.

[0007] In one embodiment, the mounting plate has an assembly area for inserting a connector, the insertion direction of which is along the axial direction of the mounting plate.

[0008] In one embodiment, a first snap-fit ​​portion is provided on the connecting portion, and a second snap-fit ​​portion is provided in the assembly area at a position corresponding to the first snap-fit ​​portion, and the second snap-fit ​​portion snaps into the corresponding first snap-fit ​​portion.

[0009] In one embodiment, the connecting part includes an outer side, an inner side, and two end faces. When the connecting part is connected to the mounting plate, the outer side and the inner side are distributed sequentially from the outside to the inside along the radial direction of the mounting plate, and the two end faces are arranged relatively spaced along the circumference of the mounting plate. The inner side and / or the end faces are provided with a first snap-fit ​​portion.

[0010] In one embodiment, the first latching part is a buckle and the second latching part is a slot for the corresponding buckle to be latched into; or, the second latching part is a buckle and the first latching part is a slot for the corresponding buckle to be latched into.

[0011] In one embodiment, the connecting part includes an outer side, an inner side, and two end faces. When the connecting part is connected to the mounting plate, the outer side and the inner side are distributed sequentially from the outside to the inside along the radial direction of the mounting plate. The two end faces are arranged relatively spaced along the circumference of the mounting plate. A first insertion part is provided on the inner side and / or the end faces. A second insertion part is provided in the assembly area at the position corresponding to the first insertion part. The first insertion part and the corresponding second insertion part are inserted and engaged, and the insertion direction of the first insertion part is along the axial direction of the mounting plate.

[0012] In one embodiment, at least two adjacent connecting parts are detachably connected together.

[0013] In one embodiment, any two adjacent connecting parts can be detachably connected.

[0014] In one embodiment, the connecting part includes two end faces. When the connecting part is connected to the mounting plate, the two end faces are arranged relatively spaced along the circumference of the mounting plate. A third plug-in part and a fourth plug-in part are matched and fitted between the two end faces of two adjacent connecting parts. The insertion direction of the third plug-in part is along the axial direction of the mounting plate.

[0015] Compared with existing technologies, this application provides a detachable fan where the blades are divided into two or more blade modules. Each blade module contains two or more blades fixedly mounted via a connecting part, and the blades are installed through a detachable connection between the connecting part and the mounting plate. This design uses the blade module as a production unit for integrated blade production, avoiding a significant increase in the difficulty of the blade forming process, and ensuring a certain level of production efficiency while guaranteeing that the blade strength meets production requirements. Furthermore, when the total number of fan blades is large, the presence of two or more blades in each blade module also improves assembly efficiency and shortens the production cycle during fan assembly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a detachable fan according to an embodiment of this application;

[0018] Figure 2 This is an exploded view of a detachable fan according to an embodiment of this application;

[0019] Figure 3This is an exploded view of the mounting plate and one of the fan blade modules of a detachable fan according to an embodiment of this application;

[0020] Figure 4 This is a partial perspective view of the connection portion of the detachable fan and the connection portion of the mounting plate according to an embodiment of this application;

[0021] Figure 5 This is a partial top view of the connection portion of the detachable fan and the connection portion of the mounting plate according to an embodiment of this application;

[0022] Figure 6 A partial top view of the connection portion of a detachable fan according to an embodiment of this application, wherein a first snap-fit ​​portion is provided at the connection portion and a second snap-fit ​​portion is provided at the mounting plate, and at the connection portion.

[0023] Figure 7 A partial perspective view of a detachable fan according to an embodiment of this application, showing a first plug-in portion at the connection part and a second plug-in portion at the mounting plate, and the connection part being shown.

[0024] Figure 8 A partial top view of the connection portion of a detachable fan according to an embodiment of this application, wherein a first plug-in portion is configured on the connecting part and a second plug-in portion is configured on the mounting plate, and at the connection portion;

[0025] Figure 9 A partial perspective view of the connection portion of a detachable fan according to an embodiment of the present application, which is provided with a first plug-in portion and a first snap-fit ​​portion, and a mounting plate which is provided with a second plug-in portion and a second snap-fit ​​portion, and at the connection portion.

[0026] Figure 10 A partial top view of the connection portion of a detachable fan according to an embodiment of the present application, which is provided with a first plug-in portion and a first snap-fit ​​portion, and a mounting plate which is provided with a second plug-in portion and a second snap-fit ​​portion, and at the connection portion;

[0027] Figure 11 This is a top view of a detachable fan that is detachably connected between connecting parts according to an embodiment of this application;

[0028] Figure 12 This is an exploded top view of a detachable fan with detachable connections between connecting parts according to an embodiment of this application;

[0029] Figure 13 This is an exploded top view of a detachable fan that is detachably connected between connecting parts according to another embodiment of this application.

[0030] Reference numerals: 10, mounting plate; 11, assembly area; 12, second snap-fit ​​part; 13, second insertion part; 20, fan blade module; 21, connecting part; 211, outer side; 212, inner side; 213, end face; 22, blade; 23, first snap-fit ​​part; 24, first insertion part; 25, third insertion part; 26, fourth insertion part. Detailed Implementation

[0031] 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.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," "side," "top," "bottom," and similar expressions used in this application's specification are merely for describing various exemplary structural parts and elements of this application. However, their use herein is for illustrative purposes only and is determined based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating orientation are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0033] 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.

[0034] 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 and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, and may be at an angle to the axial direction.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0037] To balance the complexity of fan blade manufacturing processes and the quality of the fan blades, please refer to [link / reference]. Figures 1 to 3 This application provides a detachable fan, including a mounting plate 10 and two or more sets of fan blade modules 20. The fan blade modules 20 are distributed around the mounting plate 10 and can be detachably fixedly connected to the mounting plate 10. Specifically, each set of fan blade modules 20 includes a connecting portion 21 and at least two blades 22 fixedly mounted on the connecting portion 21, and the connecting portion 21 is used for detachable fixed connection to the mounting plate 10.

[0038] Understandably, in this application, the fan blades 22 are divided into at least two sets of blade modules 20. The blade modules 20 are detachably fixed to the mounting plate 10, allowing for separation between the blades 22 and the mounting plate 10. Thus, modular manufacturing is achieved using the blade modules 20 as production units, with each blade module 20 containing at least two blades 22. This design eliminates the need for integral production of all blades 22, reducing manufacturing complexity, ensuring the strength and quality of the blades 22, and saving production costs to some extent.

[0039] Furthermore, each fan blade module 20 includes at least two blades 22. During installation, each fan blade module 20 is connected to the mounting plate 10, thus completing the installation of two or more blades 22. When the number of blades 22 is large, a large number of blades 22 can be installed with fewer steps in installing the fan blade modules 20, significantly shortening the production cycle and improving production efficiency. Alternatively, when all fan blade modules 20 are installed simultaneously, fewer pieces of equipment are needed to perform the installation, reducing the installation cost.

[0040] In addition, the connection part 21 facilitates the installation operation. For example, a person or a robotic arm can directly grasp the connection part 21 and then connect the connection part 21 to the mounting plate 10 without applying force to the blade 22. This avoids the wear caused by directly clamping and grasping the blade 22 during the installation process, which would affect the product quality.

[0041] Indicatively, the fan blade module 20 may have two, three, or even more sets, with each set containing two, three, or more blades 22. See details. Figure 1 and Figure 2 In one embodiment of this application, six blades 22 are provided. Preferably, three sets of fan blade modules 20 are provided, and two blades 22 are fixedly provided on the connecting part 21 of each set of fan blade modules 20. In this embodiment, the three sets of fan blade modules 20 have the same structure and can be mass-produced using the same mold. In some other embodiments (not shown), two sets of fan blade modules 20 can be provided, and three blades 22 are fixedly provided on the connecting part 21 of each set of fan blade modules 20. In comparison, the number of blades 22 in each set of fan blade modules 20 increases, which requires higher mold specifications and increases process costs, but the number of fan blade modules 20 is reduced, the number of installations of fan blade modules 20 is reduced, the installation cycle is shortened, and the efficiency is higher. Alternatively, in some other embodiments (not shown), two sets of fan blade modules 20 are provided, with two blades 22 fixedly provided on the connecting part 21 of one set of fan blade modules 20, and four blades 22 fixedly provided on the connecting part 21 of the other set of fan blade modules 20.

[0042] In summary, in the embodiments of this application, the number of fan blade modules 20 and the number of blades 22 provided on the connecting part 21 can be determined according to actual production needs after comprehensively considering the manufacturing process difficulty and production and installation efficiency of the fan blade modules 20.

[0043] In some embodiments of this application, such as Figure 4As shown, the connecting part 21 is snapped into and fixed to the mounting plate 10. Snap-fit ​​fixing is a common detachable fixing method, typically using structures or components with a certain degree of elastic deformation, such as clips or clamps, to achieve component connection. In other embodiments, the connecting part 21 and the mounting plate 10 can also be fixed using bolt connections, pin connections, or other methods that enable detachable connection.

[0044] In some embodiments of this application, the connecting part 21 and the mounting plate 10 are detachably connected by a plug-in engagement. Specifically, as shown... Figure 5 As shown, the mounting plate 10 has an assembly area 11 formed on it for the insertion of the connecting part 21, and the insertion direction of the connecting part 21 is along the axial direction of the mounting plate 10. The assembly area 11 can be pre-formed during the manufacturing process of the mounting plate 10, or it can be further processed after the mounting plate 10 is manufactured. Figure 5 In the accompanying drawings, a portion of the assembly area 11 is shown with bold black dashed lines, and this method of representation is also applied in other drawings. In this embodiment, the assembly area 11 on the mounting plate 10 is fully adapted to the connecting portion 21 so that the connecting portion 21 and the assembly area 11 form a plug-in fit. Furthermore, inserting the connecting portion 21 along the axial direction of the mounting plate 10 facilitates the plug-in operation, and the plug-in fit provides positioning guidance for the connection between the connecting portion 21 and the mounting plate 10.

[0045] It is important to note that, generally, a plug-in connection does not achieve a secure fixation. Specifically, when the connecting part 21 is plugged into the mounting plate 10 along the axial direction of the mounting plate 10, the sliding freedom between the connecting part 21 and the mounting plate 10 along the axial direction of the mounting plate 10 is not restricted. However, in a fan structure, a cover plate (not shown) is usually installed on the axial direction of the mounting plate 10. After the connecting part 21 and the mounting plate 10 are plugged in along the axial direction, the cover plate is then fastened to both ends of the mounting plate 10, restricting the degree of freedom of the connecting part 21 along the axial direction of the mounting plate 10, thereby achieving a secure fixation.

[0046] In some embodiments, the connection between the connecting part 21 and the mounting plate 10 is achieved through a plug-in fit, and the degrees of freedom in multiple directions are not restricted. For example... Figure 5As shown, the connecting part 21 is inserted into the mounting plate 10 along the axial direction, and the connecting part 21 can be disengaged from the mounting plate 10 both axially and radially. At this point, the installation of the cover plate cannot achieve a secure connection between the connecting part 21 and the mounting plate 10. Therefore, the insertion connection between the connecting part 21 and the mounting plate 10 is combined with other connection methods or structures to achieve detachable fixation. Examples include a combination of insertion and snap-fit ​​connections, a combination of insertion and bolt connections, or an interference fit between the connecting part 21 and the mounting plate 10. This restricts the sliding freedom of the connecting part 21 and the mounting plate 10 along the axial direction, ultimately achieving the desired fixation effect.

[0047] like Figure 6 As shown, in some embodiments of this application, the connecting part 21 is provided with a first snap-fit ​​part 23, and a second snap-fit ​​part 12 is provided in the assembly area 11 at a position corresponding to the first snap-fit ​​part 23. The second snap-fit ​​part 12 snaps into the corresponding first snap-fit ​​part 23. In this way, the connecting part 21 and the mounting plate 10 are detachably fixed by a combination of plug-in and snap-fit ​​connection, which is convenient and quick to assemble and disassemble and has high connection reliability.

[0048] For example Figure 6 As shown, in some embodiments of this application, the connecting portion 21 includes an outer surface 211, an inner surface 212, and two end faces 213. When the connecting portion 21 is connected to the mounting plate 10, the outer surface 211 and the inner surface 212 are distributed sequentially from the outside to the inside along the radial direction of the mounting plate 10, and the two end faces 213 are arranged relatively spaced along the circumference of the mounting plate 10. The inner surface 212 and / or the end faces 213 are provided with a first snap-fit ​​portion 23. In this embodiment, multiple snap-fit ​​portions are provided between the connecting portion 21 and the mounting plate 10, and the snap-fit ​​orientation of each snap-fit ​​portion can also be set to different directions to ensure the connection strength between the connecting portion 21 and the mounting plate 10.

[0049] In some preferred embodiments of this application, the first snap-fit ​​portion 23 is a snap-fit ​​and the second snap-fit ​​portion 12 is a slot for the corresponding snap-fit ​​to engage. Alternatively, the second snap-fit ​​portion 12 is a snap-fit ​​and the first snap-fit ​​portion 23 is a slot for the snap-fit ​​to engage. The first snap-fit ​​portion 23 can be directly formed on the connecting portion 21, and the second snap-fit ​​portion 12 can be directly formed on the mounting plate 10. In this way, they can be integrally formed during the manufacturing process of the connecting portion 21 and the mounting plate 10, reducing the number of parts in the entire fan and reducing secondary processing of the connecting portion 21 and the mounting plate 10.

[0050] Combination Figure 7 and Figure 8In some embodiments of this application, the plug-in fit between the connecting portion 21 and the mounting plate 10 can also be improved by designing the plug-in structure to enhance connection reliability. Specifically, the connecting portion 21 includes an outer surface 211, an inner surface 212, and two end faces 213. When the connecting portion 21 and the mounting plate 10 are connected, the outer surface 211 and the inner surface 212 are distributed sequentially from the outside to the inside along the radial direction of the mounting plate 10, and the two end faces 213 are arranged relatively spaced along the circumference of the mounting plate 10. A first plug-in portion 24 is provided on the inner surface 212 and / or the end face 213, and a second plug-in portion 13 is provided in the assembly area 11 at a position corresponding to the first plug-in portion 24. The first plug-in portion 24 and the corresponding second plug-in portion 13 are plugged into each other, and the insertion direction of the first plug-in portion 24 is along the axial direction of the mounting plate 10. In this embodiment, the connection reliability between the connecting portion 21 and the mounting plate 10 is further improved by the fit between the first plug-in portion 24 and the second plug-in portion 13. Specifically, the degree of freedom of the connecting part 21 and the mounting plate 10 after they are inserted and fitted is restricted to only along the axial direction of the mounting plate 10. At this time, the fixed connection between the connecting part 21 and the mounting plate 10 can be completed by the fastening of the cover plate (not shown) and the mounting plate 10.

[0051] like Figure 7 and Figure 8 As shown, in this embodiment, two sets of plug-in structures are provided between the inner surface 212 and the mounting plate 10, and one set of plug-in structures is provided between each of the two end faces 213 and the mounting plate 10. The first plug-in part 24 and the second plug-in part 13 can adopt plug-in structures with trapezoidal cross-sections and matching ribs and slots. Of course, the number and position of the plug-in structures, the shape and construction of the ribs and slots, and the interchange of the positions of the ribs and slots can all be adjusted according to production needs. This design can improve the anti-detachment performance along the radial direction of the mounting plate 10 after the connecting part 21 and the mounting plate 10 are plugged in.

[0052] In some preferred embodiments of this application, such as Figure 9 and Figure 10 As shown, a plug-in structure consisting of a first plug-in portion 24 and a second plug-in portion 13 is arranged between the connecting portion 21 and the mounting plate 10. Simultaneously, a snap-fit ​​structure consisting of a first snap-fit ​​portion 23 and a second snap-fit ​​portion 12 can be arranged between the connecting portion 21 and the mounting plate 10 to further enhance the connection strength between the connecting portion 21 and the mounting plate 10. It should be noted that the plug-in direction of the first plug-in portion 24 and the second plug-in portion 13 is along the axial direction of the mounting plate 10; therefore, the mounting direction of the first snap-fit ​​portion 23 and the second snap-fit ​​portion 12 is also along the axial direction of the mounting plate 10.

[0053] See also Figure 9 and Figure 10In this embodiment, a first insertion portion 24 is provided on both the end face 213 and the inner side face 212 of the connecting portion 21. The first insertion portion 24 on the end face 213 is a rib, and the first insertion portion 24 on the inner side face 212 is a slot. Furthermore, a first snap-fit ​​portion 23 is provided on the inner side face 212 of the connecting portion 21, and the first snap-fit ​​portion 23 is a buckle. Correspondingly, in the assembly area 11 of the mounting plate 10, a slot is provided at the rib on the end face 213, a rib is provided at the slot on the inner side face 212, and a slot is provided at the buckle on the inner side face 212.

[0054] In some embodiments of this application, see Figures 11 to 13 At least two adjacent connecting parts 21 are detachably connected together. That is, at least two adjacent fan blade modules 20 are detachably connected together, allowing each fan blade module 20 to be connected to other fan blade modules 20 before being connected to the mounting plate 10, and then the two connected sets of fan blade modules 20 are connected to the mounting plate 10 to complete the installation. It is understood that the detachable connection between two adjacent fan blade modules 20 does not require complete fixation, but rather allows for pre-connection of the two fan blade modules 20 during installation, creating a certain positioning constraint between them to meet different installation process requirements. Therefore, the detachable connection method between the connecting parts 21 can be a detachable fixed connection, such as snap-fit ​​fixing or bolt fixing, or it can be a plug-in method, which is not completely fixed.

[0055] Specifically, in some embodiments, the detachable fan has two sets of detachably connected fan blade modules 20. During the actual connection process, when installing these two sets of fan blade modules 20, the first set of fan blade modules 20 can be connected to the mounting plate 10 first, and then the adjacent second set of fan blade modules 20 can be connected to the mounting plate 10. Simultaneously, the second set of fan blade modules 20 will also be connected to the first set of fan blade modules 20, thus completing the installation of both sets of fan blade modules 20. Alternatively, the two sets of fan blade modules 20 can be connected first, and then the connected sets of fan blade modules 20 can be connected to the mounting plate 10, which also completes the installation of both sets of fan blade modules 20. This design makes the installation method of the detachable fan flexible and diverse, adaptable to different production and installation scenarios.

[0056] In a further embodiment of this application, any two adjacent connecting parts 21 can be detachably connected, making the choice of installation method more flexible and diverse.

[0057] In some embodiments of this application, the connecting portions 21 are detachably connected by a plug-in method. Specifically, see... Figure 12 and Figure 13As shown, the connecting portion 21 includes two end faces 213. When the connecting portion 21 is connected to the mounting plate 10, the two end faces 213 are arranged at intervals along the circumference of the mounting plate 10. Adjacent connecting portions 21 have mating third insertion portions 25 and fourth insertion portions 26 between their adjacent end faces 213. The insertion direction of the third insertion portion 25 is along the axial direction of the mounting plate 10. In this embodiment, the third insertion portion 25 and the fourth insertion portion 26 can also be in the form of a trapezoidal rib and a trapezoidal slot.

[0058] See Figure 12 Each fan blade module 20 has a third insertion part 25 or a fourth insertion part 26 at both ends of the connecting part 21, meaning that both ends of the connecting part 21 are connected to other connecting parts 21. Alternatively, see... Figure 13 On both ends of the connecting part 21, a third plug-in part 25 or a fourth plug-in part 26 is provided on one end, and a first plug-in part 24 is provided on the other end. Correspondingly, a second plug-in part 13 needs to be provided on the mounting plate 10 to cooperate with the plug-in of the first plug-in part 24.

[0059] 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.

[0060] 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 patent application. 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 scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A detachable fan, characterized in that, It includes a mounting plate (10) and two or more sets of fan blade modules (20) arranged circumferentially around the mounting plate (10). Each set of fan blade modules (20) includes a connecting part (21) and at least two blades (22) fixedly installed on the connecting part (21). The connecting part (21) and the mounting plate (10) are detachably fixedly connected.

2. The detachable fan according to claim 1, characterized in that, The connecting part (21) is snapped into and fixed to the mounting plate (10).

3. The detachable fan according to claim 1, characterized in that, The mounting plate (10) has an assembly area (11) for inserting the connecting part (21), the insertion direction of which is along the axial direction of the mounting plate (10).

4. The detachable fan according to claim 3, characterized in that, The connecting part (21) is provided with a first snap-fit ​​part (23), and a second snap-fit ​​part (12) is provided in the assembly area (11) at the position corresponding to the first snap-fit ​​part (23), and the second snap-fit ​​part (12) snaps into the first snap-fit ​​part (23).

5. The detachable fan according to claim 4, characterized in that, The connecting part (21) includes an outer side (211), an inner side (212), and two end faces (213). When the connecting part (21) is connected to the mounting plate (10), the outer side (211) and the inner side (212) are distributed from the outside to the inside along the radial direction of the mounting plate (10), and the two end faces (213) are arranged relatively at intervals along the circumference of the mounting plate (10). The inner side (212) and / or the end face (213) are provided with the first snap-fit ​​part (23).

6. The detachable fan according to claim 5, characterized in that, The first snap-fit ​​part (23) is a snap fastener and the second snap-fit ​​part (12) is a slot for snapping into the corresponding snap fastener; or, the second snap-fit ​​part (12) is a snap fastener and the first snap-fit ​​part (23) is a slot for snapping into the corresponding snap fastener.

7. The detachable fan according to claim 3 or 4, characterized in that, The connecting part (21) includes an outer side (211), an inner side (212), and two end faces (213). When the connecting part (21) is connected to the mounting plate (10), the outer side (211) and the inner side (212) are distributed from the outside to the inside along the radial direction of the mounting plate (10). The two end faces (213) are arranged at intervals along the circumference of the mounting plate (10). A first insertion part (24) is provided on the inner side (212) and / or the end face (213). The assembly area (11) is provided with a second insertion part (13) at the position corresponding to the first insertion part (24). The first insertion part (24) is inserted into the corresponding second insertion part (13), and the insertion direction of the first insertion part (24) is along the axial direction of the mounting plate (10).

8. The detachable fan according to claim 1 or 2, characterized in that, At least two adjacent connecting parts (21) are detachably connected together.

9. The detachable fan according to claim 8, characterized in that, Any two adjacent connecting parts (21) can be detachably connected.

10. The detachable fan according to claim 8, characterized in that, The connecting part (21) includes two end faces (213). When the connecting part (21) is connected to the mounting plate (10), the two end faces (213) are arranged relatively at intervals along the circumference of the mounting plate (10). A third plug-in part (25) and a fourth plug-in part (26) are matched and fitted between the two end faces (213) of the two adjacent connecting parts (21). The insertion direction of the third plug-in part (25) is along the axial direction of the mounting plate (10).

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