fan

Abstract

The application provides a fan, which comprises an air outlet module and a purification module. The purification module is connected to the air outlet module. The purification module has an opening, a first air inlet and a first air outlet. The first air outlet is arranged in the opening. The air outlet module has a second air inlet and a second air outlet. The first air outlet is in communication with the second air outlet. The purification module can suck external air into the purification module through the first air inlet, purify the air, send the purified air into the air outlet module through the first air outlet, and then send the air out of the second air outlet. The area ratio of the first air outlet to the opening is 30%-50%. The application can realize a larger first air outlet area under the same opening area, thereby improving the air outlet effect and air outlet volume of the purification module, and further improving the air outlet volume and purification effect of the air outlet module.

Description

Technical Field

[0001] This application belongs to the field of fan technology, specifically relating to fans. Background Technology

[0002] Fans typically have a blowing function, but if you want to purify the air, you need to purchase an air purifier separately, which is not only expensive but also takes up space, so it cannot meet the needs of users. Utility Model Content

[0003] In view of this, this application provides a fan, the fan including an air outlet module and a purification module, the purification module being connected to the air outlet module, the purification module having an opening, the purification module also having a first air inlet and a first air outlet, the first air outlet being disposed within the opening, the air outlet module having a second air inlet and a second air outlet, and the first air outlet being connected to the second air outlet; the purification module is capable of drawing in outside air through the first air inlet for purification, and sending the purified air into the air outlet module through the first air outlet, and then sending it out from the second air outlet; the area ratio of the first air outlet to the area of ​​the opening is 30%-50%.

[0004] The air outlet module includes a first outer shell assembly, and the purification module includes a connector. The connector includes an outer ring, an inner ring, and a boss. The outer ring and the inner ring are arranged circumferentially, and the inner ring is located inside the outer ring. The inner ring is used to mount the motor of the purification module. The inner side of the outer ring forms the opening, and the outer side of the inner ring and the inner side of the outer ring form the first air outlet. The inner side of the outer ring has a protruding connecting portion, and the boss is connected to the outer side of the outer ring. The first outer shell assembly is connected to the boss and is also connected to the connecting portion.

[0005] The first housing assembly and the boss portion are connected by a snap-fit ​​connection through a snap-fit ​​part and a snap-fit ​​hole.

[0006] The first outer shell assembly and the boss are further connected by a limiting part and a limiting hole to achieve a limiting connection. When the snap-fit ​​part is located in the snap-fit ​​hole, the limiting part is located in the limiting hole, and the height of the limiting part is less than the height of the snap-fit ​​part.

[0007] The connector further includes an air guide section, which is connected between the outer ring and the inner ring and is used to control the transmission direction of the purified air.

[0008] The connecting part is connected to the air guide part, and the orthographic projection of the connecting part is located inside the air guide part along the axial direction of the fan.

[0009] The purification module further includes a light guide ring and a light-emitting element. The light guide ring is connected to the protrusion portion, and the light guide ring and the protrusion portion form a light-guiding space. The light-emitting element is disposed in the light-guiding space, and the light emitted by the light-emitting element can be emitted to the outside of the fan through the light guide ring and the protrusion portion.

[0010] The purification module further includes a second housing assembly, with the first air inlet arranged around the periphery of the second housing assembly.

[0011] The purification module also includes a sensor located at the end of the purification module away from the air outlet module, and the sensor is used to detect the quality of the outside air.

[0012] Wherein, the outer diameter of the end of the air outlet module away from the purification module is smaller than the outer diameter of the end of the purification module away from the air outlet module.

[0013] The fan provided in this application, firstly, adds a purification module to the air outlet module. This purification module purifies the air and also delivers the purified air into the air outlet module. This not only increases the air intake of the air outlet module, thus increasing its output air volume, but also ensures that the air discharged from the second air outlet is partially purified air, achieving a purification effect. Thus, a single fan can simultaneously perform air output and air purification functions. Secondly, the purification module has an opening with a first air outlet. This application sets the area ratio of the first air outlet to the opening area to be 30%-50%, achieving a larger first air outlet area for the same opening area. This improves the air output effect and volume of the purification module, thereby enhancing the air output volume and purification effect of the air outlet module. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0015] Figure 1 This is a three-dimensional structural diagram of the fan in one embodiment of this application.

[0016] Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the fan from another perspective.

[0017] Figure 3 for Figure 1 The exploded view of the fan shown.

[0018] Figure 4 for Figure 1 The diagram shows a three-dimensional structure of the purification module in the fan.

[0019] Figure 5 for Figure 4 A top view of the purification module shown.

[0020] Figure 6 for Figure 4 The diagram shows a three-dimensional structure of the connector in the purification module.

[0021] Figure 7 for Figure 6 The top view of the connector shown.

[0022] Figure 8 This is an exploded view of a portion of the first housing assembly and the connecting member in one embodiment of this application.

[0023] Figure 9 for Figure 4 The purification module shown is a front view from another angle.

[0024] Figure 10 for Figure 9 An exploded view of the purification module shown.

[0025] Label Explanation:

[0026] Fan-1, Air outlet module-10, Second air inlet-101, Second air outlet-102, First housing assembly-11, Snap-fit ​​part-111, Limiting part-112, Purification module-20, Opening-200, First air inlet-201, First air outlet-202, Connector-21, Outer ring part-211, Inner ring part-212, Boss part-213, Connecting part-214, Snap-fit ​​hole-215, Limiting hole-216, Air guide part-217, Motor-22, Light guide ring-23, Light emitting element-24, Filter element-25, Second housing assembly-26, Sensor-27, Base module-30. Detailed Implementation

[0027] The following are preferred embodiments of this application. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

[0028] In view of this, in order to solve the above-mentioned technical problems, this application provides a fan, which please refer to. Figures 1-5 , Figure 1 This is a three-dimensional structural diagram of the fan in one embodiment of this application. Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the fan from another perspective. Figure 3 for Figure 1 The exploded view of the fan shown. Figure 4 for Figure 1 The diagram shows a three-dimensional structure of the purification module in the fan. Figure 5 for Figure 4 The diagram shows a top view of the purification module. This embodiment provides a fan 1, which includes an air outlet module 10 and a purification module 20. The purification module 20 is connected to the air outlet module 10. The purification module 20 has an opening 200, a first air inlet 201, and a first air outlet 202. The first air outlet 202 is located within the opening 200. The air outlet module 10 has a second air inlet 101 and a second air outlet 102, and the first air outlet 202 communicates with the second air outlet 102. The purification module 20 can draw in outside air through the first air inlet 201 for purification, and then send the purified air into the air outlet module 10 through the first air outlet 202, and finally send it out through the second air outlet 102. The area ratio of the first air outlet 202 to the area of ​​the opening 200 is 30%-50%.

[0029] Fan 1 is a device that can blow air and can be used in various scenarios, such as indoors and outdoors, to improve the temperature of the external environment and enhance the overall comfort of the user. The fan 1 provided in this embodiment includes, but is not limited to, household fans and industrial fans in terms of usage scenarios, and includes, but is not limited to, table fans and standing fans in terms of type. This embodiment only uses a tower fan for illustrative purposes.

[0030] The air outlet module 10 is the core module of the fan 1. It is used to blow air outwards. Specifically, the air outlet module 10 has a second air inlet 101 and a second air outlet 102. When the air outlet module 10 is working, outside air enters through the second air inlet 101 and is then blown out through the second air outlet 102. Based on the air outlet principle, the air outlet module 10 includes, but is not limited to, circulating air outlet modules, inertial flow air outlet modules, centrifugal air outlet modules, and axial flow air outlet modules. Optionally, the air outlet module 10 can blow cold air or hot air to the outside, and may even simultaneously spray water mist outwards, which will drift towards the outside environment under the influence of the wind. This embodiment does not provide a detailed description of the air outlet module 10; it is sufficient that the air outlet module 10 can blow air.

[0031] Based on the air outlet module 10, this embodiment can further include a purification module 20, which is connected to the air outlet module 10, thus combining the purification module 20 and the air outlet module 10 together. The purification module 20 has the function of purifying the air, therefore the fan 1 provided in this embodiment has both purification and heat dissipation effects, and the fan 1 can also be called a two-in-one tower fan. The upper end of the purification module 20 has an opening 200, and the purification module 20 also has a first air inlet 201 and a first air outlet 202, and the first air outlet 202 can be located within the opening 200. In other words, a portion of the area within the opening 200 can serve as the first air outlet 202, while the remaining portion is used for other purposes.

[0032] Based on this, the first air outlet 202 can be connected to the second air outlet 102. Specifically, when the purification module 20 is working, it can draw outside air into the purification module 20 through the first air inlet 201 for purification, and send the purified air into the air outlet module 10 through the first air outlet 202, and finally send it out from the second air outlet 102.

[0033] It is worth noting that when the purification module 20 is working, the air outlet module 10 may or may not be working. When the air outlet module 10 is not working, purified air can still be blown out from the second air outlet 102, and at this time, the air blown out by the fan 1 is all purified air. When the air outlet module 10 is working, the air outlet module 10 itself will also draw in air from the second air inlet 101 and then blow out from the second air outlet 102. At this time, the purified air mixes with the air entering from the second air inlet 101 and is finally blown out from the second air outlet 102. It can also be understood that the air inlets of the purification module 20 and the air outlet module 10 are different, but they both ultimately exit from the same air outlet.

[0034] Therefore, when the air outlet module 10 is not working, the fan 1 can be used as a standalone air purifier. When the air outlet module 10 is working, since the purification module 20 can also send purified air into the air outlet module 10, it not only increases the air intake of the air outlet module 10, thereby increasing the air output of the air outlet module 10, but also ensures that part of the air blown out from the second air outlet 102 is purified air, achieving a purification effect. Thus, a single fan 1 can simultaneously achieve the functions of air output and air purification. It is worth noting that when the air outlet module 10 is working, only a portion of the air ultimately blown out from the second air outlet 102 is purified air; the remaining portion is unpurified air, or air that has undergone preliminary purification by the air outlet module 10.

[0035] Furthermore, since only a portion of the area within the opening 200 serves as the first air outlet 202, this embodiment can control the ratio of the area of ​​the first air outlet 202 to the area of ​​the opening 200 to be 30%-50%. In related technologies, the ratio of the area of ​​the first air outlet 202 to the area of ​​the opening 200 is less than 30%. This embodiment can achieve a larger area of ​​the first air outlet 202 compared to related technologies, while maintaining the same opening 200 area, thereby improving the air outlet effect and air volume of the purification module 20, and further improving the air volume and purification effect of the air outlet module 10.

[0036] Optionally, the ratio of the area of ​​the first air outlet 202 to the area of ​​the opening 200 can be 30%, 32%, 34%, 36%, 38%, 40%, 42%, 44%, 46%, 48%, or 50%. This embodiment is only illustrated using a ratio of 38.38% for the area of ​​the first air outlet 202 to the area of ​​the opening 200. Specifically, the inner diameter of the outer ring 211 is 173.18 mm, and the area of ​​the opening 200 is 23543.18 mm². 2 The outer diameter of the inner ring 212 is 135.94 mm, and the area is 14506.55 mm². 2 Therefore, the area of ​​the first air outlet 202 is 9036.63 mm². 2 .

[0037] Optionally, a pre-filter structure, such as a filter screen or filter surface, is provided at the second air inlet 101 to pre-filter the incoming air.

[0038] Optionally, the purification module 20 is located below the air outlet module 10. The purification module 20 absorbs outside air from below for purification and transmits the purified air upwards, finally blowing it out from the second air outlet 102 of the upper air outlet module 10.

[0039] Optionally, the fan 1 also includes a base module 30, which is located at the lower end of the purification module 20. The base module 30 has a horizontal oscillation function, which can drive the purification module 20 and the air outlet module 10 to rotate in the circumferential direction of the fan 1.

[0040] In this embodiment, the outer diameter of the end of the air outlet module 10 away from the purification module 20 is smaller than the outer diameter of the end of the purification module 20 away from the air outlet module 10.

[0041] From an aesthetic perspective, this embodiment allows the outer diameter of the end of the air outlet module 10 furthest from the purification module 20 to be smaller than the outer diameter of the end of the purification module 20 furthest from the air outlet module 10. In other words, the fan 1 forms a structure that is narrower at the top and wider at the bottom. This not only improves the appearance of the fan 1 but also enables the miniaturization of the fan 1.

[0042] Please refer to this as well. Figure 3 , Figures 5-7 , Figure 6 for Figure 4 The diagram shows a three-dimensional structure of the connector in the purification module. Figure 7 for Figure 6 The diagram shows a top view of the connector. In this embodiment, the air outlet module 10 includes a first outer shell assembly 11, and the purification module 20 includes a connector 21. The connector 21 includes an outer ring portion 211, an inner ring portion 212, and a boss portion 213. The outer ring portion 211 and the inner ring portion 212 are arranged circumferentially, and the inner ring portion 212 is disposed inside the outer ring portion 211. The inner ring portion 212 is used to mount the motor 22 of the purification module 20. The inner side of the outer ring portion 211 surrounds and forms the opening 200. The outer side of the inner ring portion 212 and the inner side of the outer ring portion 211 surround and form the first air outlet 202. A connecting portion 214 protrudes from the inner side of the outer ring portion 211. The boss portion 213 is connected to the outer side of the outer ring portion 211. The first outer shell assembly 11 is connected to the boss portion 213 and is also connected to the connecting portion 214.

[0043] The air outlet module 10 includes an outer first housing assembly 11, which serves as the exterior of the air outlet module 10, providing a mounting base and protection for the internal components. The purification module 20 includes a connector 21, which is mainly used to connect the first housing assembly 11, thereby connecting the air outlet module 10 and the purification module 20 together. Specifically, the connector 21 includes an outer ring portion 211, an inner ring portion 212, and a boss portion 213. The outer ring portion 211 and the inner ring portion 212 are arranged circumferentially, with the outer ring portion 211 located on the outermost side and the inner ring portion 212 located inside the outer ring portion 211. The inner ring portion 212 is mainly used to mount the motor 22 of the purification module 20.

[0044] Therefore, the inner side of the outer ring portion 211 forms the aforementioned opening 200, and the outer side of the inner ring portion 212 and the inner side of the outer ring portion 211 form the aforementioned first air outlet 202. In other words, the air purified by the purification module 20 can enter the air outlet module 10 from the area between the inner ring portion 212 and the outer ring portion 211. The purified air will not enter the air outlet module 10 from the inner ring portion 212 because the inner ring portion 212 can be sealed in conjunction with other components. Therefore, the purified air can only enter the air outlet module 10 from the area between the inner ring portion 212 and the outer ring portion 211.

[0045] Based on this, a connecting portion 214 can be provided on the inner side of the outer ring portion 211. The connecting portion 214 is mainly used to connect with the first outer shell assembly 11 to realize the connection between the air outlet module 10 and the purification module 20. In related technologies, the first outer shell assembly 11 is connected entirely through the connecting portions 214, so there are a large number of connecting portions 214. Since the connecting portion 214 protrudes from the inner side of the outer ring portion 211, the connecting portion 214 will occupy part of the space between the outer ring portion 211 and the inner ring portion 212, thereby reducing the area of ​​the first air outlet 202 and reducing the air volume and air outlet effect of the purification module 20.

[0046] However, in this embodiment, a boss portion 213 can be added to the outer ring portion 211 and the inner ring portion 212. The boss portion 213 is connected to the outer side of the outer ring portion 211 and has a boss structure. In this embodiment, the first outer shell assembly 11 can be connected to the boss portion 213, and the first outer shell assembly 11 is also connected to the connecting portion 214. Therefore, by connecting the first outer shell assembly 11 to the boss portion 213, this embodiment can reduce the connection requirements between the first outer shell assembly 11 and the connecting portion 214, thereby reducing the number of connecting portions 214, and thus increasing the area of ​​the first air outlet 202, and increasing the ratio of the area of ​​the first air outlet 202 to the area of ​​the opening 200.

[0047] Please refer to this as well. Figures 6-8 , Figure 8 This is an exploded view of a portion of the first housing assembly and the connecting member in one embodiment of this application. In this embodiment, the first housing assembly 11 and the boss portion 213 are connected by a snap-fit ​​connection between a snap-fit ​​portion 111 and a snap-fit ​​hole 215. For example, when the snap-fit ​​portion 111 is provided on the first housing assembly 11, the snap-fit ​​hole 215 can be provided on the boss portion 213; when the snap-fit ​​hole 215 is provided on the first housing assembly 11, the snap-fit ​​portion 111 can be provided on the boss portion 213. This embodiment is only illustrated with the snap-fit ​​portion 111 being provided on the first housing assembly 11 and the snap-fit ​​hole 215 being provided on the boss portion 213. The snap-fit ​​portion 111 is L-shaped, and after the snap-fit ​​portion 111 is provided in the snap-fit ​​hole 215, it can be snapped in place by rotating it circumferentially.

[0048] In summary, this embodiment enables a detachable connection between the air outlet module 10 and the purification module 20 by engaging the snap-fit ​​part 111 with the snap-fit ​​hole 215, which facilitates installation, disassembly, replacement or maintenance.

[0049] In this embodiment, the first outer shell assembly 11 and the boss portion 213 are further connected by a limiting portion 112 cooperating with a limiting hole 216 to achieve a limiting connection. When the snap-fit ​​portion 111 is disposed in the snap-fit ​​hole 215, the limiting portion 112 is disposed in the limiting hole 216, and the height of the limiting portion 112 is less than the height of the snap-fit ​​portion 111.

[0050] Based on the snap-fit ​​part 111 and the snap-fit ​​hole 215, the first outer shell assembly 11 and the boss part 213 can also be connected by the limiting part 112 and the limiting hole 216. When the limiting part 112 is provided on the first outer shell assembly 11, the limiting hole 216 can be provided on the boss part 213, or when the limiting hole 216 is provided on the first outer shell assembly 11, the limiting part 112 can be provided on the boss part 213. This embodiment is only illustrated by the case that the limiting part 112 is provided on the first outer shell assembly 11 and the limiting hole 216 can be provided on the boss part 213.

[0051] When the air outlet module 10 is installed into the purification module 20, the snap-fit ​​part 111 is first positioned in the snap-fit ​​hole 215. Then, the air outlet module 10 is rotated circumferentially. When it is fully engaged, the limiting part 112 corresponds directly to the snap-fit ​​hole 215 and is positioned within the limiting hole 216. This cooperation between the limiting part 112 and the limiting hole 216 prevents the snap-fit ​​part 111 from rotating, thereby improving connection performance. Furthermore, due to the presence of the limiting part 112, the snap-fit ​​part 111 encounters some obstruction when installed into the snap-fit ​​hole 215. Therefore, the snap-fit ​​part 111 needs to undergo some deformation. In this embodiment, the height of the limiting part 112 can be less than the height of the snap-fit ​​part 111, which facilitates the installation of the snap-fit ​​part 111 and prevents the limiting part 112 from being too high and affecting the snap-fit ​​part 111.

[0052] Please refer to this again. Figures 6-7 In this embodiment, the connector 21 further includes an air guide 217, which is connected between the outer ring 211 and the inner ring 212. The air guide 217 is used to control the transmission direction of the purified air.

[0053] In addition to the aforementioned components, the connector 21 may also include an air guide 217. The air guide 217 is disposed between the outer ring 211 and the inner ring 212, with one end of the air guide 217 connected to the inner side of the outer ring 211 and the other end connected to the outer side of the inner ring 212. In other words, the air guide 217 is disposed within the first air outlet 202. When purified air enters the air outlet module 10 through the first air outlet 202, the air guide 217 can control the transmission direction of the purified air, preventing turbulence in the purified air and improving the air outlet effect.

[0054] In addition, it is worth noting that the installation of the air guide 217 will reduce the area of ​​the first air outlet 202 to some extent, but the ratio of the area of ​​the first air outlet 202 to the area of ​​the opening 200 after the installation of the air guide 217 is still between 30% and 50%.

[0055] Optionally, the air guide 217 is arc-shaped, allowing the purified air to rise in a spiral. It is worth noting that from a top view, the air guide 217 appears to occupy a large area of ​​the first air outlet 202. However, in reality, at different heights, only the cross-section of the air guide 217 occupies the first air outlet 202; it does not occupy a large space as seen from the top view. Therefore, the air guide 217 only occupies a small portion of the space in the first air outlet 202, but it improves the airflow efficiency.

[0056] In this embodiment, the connecting part 214 is connected to the air guide part 217, and the orthographic projection of the connecting part 214 is located within the air guide part 217 along the axial direction of the fan 1.

[0057] First, by connecting the connecting part 214 to the air guide part 217, the stability of the connector 21 can be improved. Second, in this embodiment, the connecting part 214 can be located on the front of the air guide part 217. As a result, the connecting part 214 will not occupy additional space in the first air outlet 202, and the area of ​​the first air outlet 202 can be further increased, thereby improving the air volume and air outlet effect.

[0058] Please refer to this as well. Figures 9-10 , Figure 9 for Figure 4 The purification module shown is a front view from another angle. Figure 10 for Figure 9 The exploded view of the purification module is shown. In this embodiment, the purification module 20 further includes a light guide ring 23 and a light-emitting element 24. The light guide ring 23 is connected to the boss portion 213, and the light guide ring 23 and the boss portion 213 form a light-guiding space. The light-emitting element 24 is disposed in the light-guiding space, and the light emitted by the light-emitting element 24 can pass through the light guide ring 23 and the boss portion 213 and be emitted to the outside of the fan 1.

[0059] The light guide ring 23 is also a convex structure, with the boss portion 213 serving as the upper cover and the light guide ring 23 serving as the lower cover. The two can be arranged to form a light guiding space, which is arranged around the perimeter. The light-emitting element 24 can be arranged within the light guiding space and is also arranged around the perimeter. The light guide ring 23 and the boss portion are translucent, and the light emitted by the light-emitting element 24 can be emitted outside the fan 1 through the light guide ring 23 and the boss portion 213. The light can serve as a reminder, ambient light, etc., thereby improving the appearance and functional versatility of the fan 1.

[0060] Optionally, the purification module 20 also includes a filter element 25, which is mainly used for filtering and purifying air.

[0061] In this embodiment, the purification module 20 further includes a second housing assembly 26, and the first air inlet 201 is arranged around the periphery of the second housing assembly 26.

[0062] The second outer shell assembly 26 is located below the connector 21 and the light guide ring 23. The second outer shell assembly 26 is arranged around the periphery. At this time, the first air inlet 201 can be arranged around the periphery of the second outer shell assembly 26, that is, the first air inlet 201 is arranged around the periphery of the second outer shell assembly 26, thereby increasing the air intake of the purification module 20 and improving the purification effect.

[0063] In this embodiment, the purification module 20 further includes a sensor 27, which is located at the end of the purification module 20 away from the air outlet module 10, and is used to detect the quality of the outside air.

[0064] Sensor 27 can be installed at the lower end of the purification module 20, specifically at the end of the purification module 20 furthest from the air outlet module 10. Sensor 27 is used to detect the quality of outside air drawn into the purification module 20, such as PM2.5 and dust levels. This embodiment is only illustrated using sensor 27 as a PM2.5 sensor.

[0065] Placing sensor 27 at the bottom allows for immediate air detection, improving detection accuracy. Placing sensor 27 above the air outlet module 10 avoids issues such as impure air composition, resulting in purified air mixing with outside air and lower detection accuracy.

[0066] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0067] 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 one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly specified. Moreover, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0068] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0069] The foregoing has provided a detailed description of the embodiments of this application, elucidating and explaining the principles and implementation methods of this application. These descriptions are merely for the purpose of aiding understanding the method and core ideas of this application. However, the content of this specification should not be construed as a limitation of this application. Those skilled in the art can make various modifications and variations to this application without departing from its spirit and scope. These modifications and variations fall within the scope of the claims of this application and their equivalents.

Claims

1. A fan, characterized by, The fan includes an air outlet module and a purification module. The purification module is connected to the air outlet module and has an opening. The purification module also has a first air inlet and a first air outlet, with the first air outlet located within the opening. The air outlet module has a second air inlet and a second air outlet, with the first air outlet connected to the second air outlet. The purification module can draw in outside air through the first air inlet for purification and then send the purified air into the air outlet module through the first air outlet, and finally send it out through the second air outlet. The area ratio of the first air outlet to the opening area is 30%-50%.

2. The fan as described in claim 1, characterized in that, The air outlet module includes a first outer shell assembly, and the purification module includes a connector. The connector includes an outer ring portion, an inner ring portion, and a boss portion. The outer ring portion and the inner ring portion are arranged circumferentially, and the inner ring portion is located inside the outer ring portion. The inner ring portion is used to install the motor of the purification module. The inner side of the outer ring portion forms the opening, and the outer side of the inner ring portion and the inner side of the outer ring portion form the first air outlet. The inner side of the outer ring portion has a protruding connecting portion, and the boss portion is connected to the outer side of the outer ring portion. The first outer shell assembly is connected to the boss portion, and the first outer shell assembly is also connected to the connecting portion.

3. The fan as described in claim 2, characterized in that, The first housing assembly and the protrusion are connected by a snap-fit ​​connection through a snap-fit ​​part and a snap-fit ​​hole.

4. The fan of claim 3, wherein, The first housing assembly and the boss are also connected by a limiting part and a limiting hole to achieve a limiting connection. When the snap-fit ​​part is located in the snap-fit ​​hole, the limiting part is located in the limiting hole, and the height of the limiting part is less than the height of the snap-fit ​​part.

5. The fan of claim 2, wherein, The connector also includes an air guide section, which is connected between the outer ring and the inner ring and is used to control the transmission direction of the purified air.

6. The fan of claim 5, wherein, The connecting part is connected to the air guide part, and along the axial direction of the fan, the orthographic projection of the connecting part is located inside the air guide part.

7. The fan of claim 2 wherein, The purification module also includes a light guide ring and a light-emitting element. The light guide ring is connected to the protrusion portion, and the light guide ring and the protrusion portion form a light-guiding space. The light-emitting element is disposed in the light-guiding space, and the light emitted by the light-emitting element can be emitted to the outside of the fan through the light guide ring and the protrusion portion.

8. The fan of claim 1 wherein, The purification module also includes a second housing assembly, with the first air inlet arranged around the periphery of the second housing assembly.

9. The fan as claimed in claim 1, characterized in that, The purification module also includes a sensor located at the end of the purification module away from the air outlet module, and the sensor is used to detect the quality of the outside air.

10. The fan of claim 1, wherein, The outer diameter of the end of the air outlet module away from the purification module is smaller than the outer diameter of the end of the purification module away from the air outlet module.

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