Self-cleaning assembly for fresh air device and fresh air device

Abstract

The utility model relates to the technical field of air purification, and discloses a self-cleaning assembly for a fresh air device and the fresh air device. The fresh air device comprises an air inlet pipe with an air inlet, and a filter screen is arranged in the air inlet pipe. The self-cleaning assembly comprises an air cap and a cleaning piece. The air cap is arranged on the air inlet side of the air inlet pipe. The hood comprises a fan blade set and a rotating shaft. The rotating shaft comprises a first end and a second end, and the first end is connected with the fan blade set. The cleaning piece is arranged at the second end of the rotating shaft and makes contact with the filter screen. Wherein the fan blade group can rotate under the action of external wind power, and the fan blade group rotates to drive the rotating shaft to rotate so as to drive the cleaning piece to rotate, so that the cleaning piece cleans the filter screen. Self-cleaning of the filter screen is achieved, energy is saved, the cleaning effect is good, and the safety of filter screen cleaning work is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air purification, for example, to a self-cleaning component for a fresh air device and a fresh air device. Background Art

[0002] The fresh air device is an air purification device that is used to discharge the polluted air in the room and input the fresh air from the outside into the room after filtering, dust removal, sterilization and disinfection to improve the indoor environment.

[0003] In the related art, the fresh air device includes an air intake pipe, which is equipped with a filter screen for filtering air. After a period of use, the filter screen tends to accumulate dust, resulting in reduced air volume and reduced air intake efficiency, requiring manual cleaning of the filter screen.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] In the related art, manual cleaning of the filter requires high-altitude work, which is inconvenient and highly dangerous.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiments provide a self-cleaning component for a fresh air device and a fresh air device, which realize self-cleaning of the filter, save energy, have good cleaning effects, and improve the safety of the filter cleaning work.

[0009] In some embodiments, a self-cleaning component for a fresh air device is provided, the fresh air device includes an air inlet pipe with an air inlet, a filter is provided in the air inlet pipe, and the self-cleaning component includes: a hood, arranged on the air inlet side of the air inlet pipe, the hood includes a fan blade group and a rotating shaft, the rotating shaft includes a first end and a second end, the first end is connected to the fan blade group; a cleaning member, arranged at the second end of the rotating shaft, the cleaning member is in contact with the filter; wherein the fan blade group can rotate under the action of external wind force, the rotation of the fan blade group drives the rotating shaft to rotate, and then drives the cleaning member to rotate, so that the cleaning member cleans the filter.

[0010] In the above technical solution, the hood is arranged on the air inlet side of the air inlet pipe, that is, the hood is arranged on the air inlet pipe, and the hood is located on the side close to the air inlet, so that the hood can block dust and reduce the amount of dust entering the air inlet. The hood includes a blade group and a rotating shaft, so that under the action of the wind at the air inlet, the blade group rotates to provide power for the cleaning work of the cleaning member. The rotation of the blade group can be achieved only by natural wind power, and no other energy is required, which saves energy. The first end of the rotating shaft is connected to the blade group so that the rotation of the blade group can drive the rotation of the rotating shaft. The cleaning member is arranged at the second end of the rotating shaft, and the cleaning member contacts the filter so that the rotation of the rotating shaft can drive the cleaning member to rotate, so that the cleaning member can clean the filter, thereby realizing the self-cleaning of the filter, saving energy, and having a good cleaning effect, which improves the safety of the filter cleaning work.

[0011] Optionally, the self-cleaning component further includes: a reduction gear set, which is arranged on the rotating shaft and includes an output end, and the output end of the reduction gear set is connected to the cleaning member for reducing the rotation speed.

[0012] In the above technical solution, the reduction gear set is provided on the rotating shaft so that the rotation of the rotating shaft can be transmitted through the reduction gear set. The output end of the reduction gear set is connected to the cleaning element. In other words, the rotation of the rotating shaft is transmitted to the cleaning element via the reduction gear set. During the rotation transmission process, the rotation speed can be reduced. That is, compared with the rotation speed of the rotating shaft, the cleaning element can rotate at a lower speed to clean the filter, thereby reducing cleaning noise.

[0013] Optionally, the reduction gear group includes: a first gear, which is arranged on the rotating shaft; a second gear, which is movably arranged on the rotating shaft and is spaced apart from the first gear, and the second gear is connected to the cleaning member as the output end of the reduction gear group; a coaxially arranged third gear and a fourth gear, which are arranged on one side of the rotating shaft, the third gear is meshed with the first gear, and the fourth gear is meshed with the second gear; wherein the number of teeth of the first gear is smaller than the number of teeth of the third gear; and / or the number of teeth of the fourth gear is smaller than the number of teeth of the second gear.

[0014] In the above technical solution, the first gear is mounted on the rotating shaft. Specifically, the first gear is fixed to the rotating shaft so that rotation of the rotating shaft drives the first gear. The third and fourth gears are both mounted on one side of the rotating shaft, allowing the third gear to mesh with the first gear and the fourth gear to mesh with the second gear, thus saving installation space. The first gear meshes with the third gear so that rotation of the first gear drives rotation of the third gear. The third and fourth gears are coaxial, enabling synchronous rotation of the third and fourth gears. The fourth gear meshes with the second gear so that rotation of the fourth gear drives rotation of the second gear. The second gear is movably mounted on the rotating shaft. In other words, the rotating shaft supports the mounting position of the second gear, while rotation of the second gear is driven by the fourth gear, thereby reducing the rotation speed through the transmission process of the first, third, fourth, and second gears. The second gear is spaced apart from the first gear. Specifically, the second gear is located on the side of the first gear closest to the air inlet duct, so that the second gear serves as the output end of the reduction gear set connected to the cleaning element, thereby driving the cleaning element to rotate. The first gear has fewer teeth than the third gear, reducing the rotational speed during the transmission process from the first gear to the third gear. The fourth gear has fewer teeth than the second gear, further reducing the rotational speed. This allows the cleaning element to rotate at a lower speed than the rotating shaft to clean the filter, reducing cleaning noise.

[0015] Optionally, the first gear and the fourth gear have the same number of teeth; and / or the second gear and the third gear have the same number of teeth.

[0016] In the above technical solution, the first gear and the fourth gear have the same number of teeth, which facilitates production and reduces costs. The second gear and the third gear have the same number of teeth, which facilitates production and reduces costs.

[0017] Optionally, the reduction gear group also includes: a support rod, one end of which is connected to the rotating shaft; a connecting shaft, which is arranged parallel to the rotating shaft, one end of which is connected to the third gear and the other end is connected to the fourth gear, and the middle part of the connecting shaft is movably connected to the end of the support rod away from the rotating shaft.

[0018] In the above technical solution, one end of the support rod is connected to the rotating shaft, enabling the rotating shaft to support the support rod, which in turn supports the third and fourth gears. The middle portion of the connecting shaft is movably connected to the end of the support rod remote from the rotating shaft, allowing the connecting shaft to move relative to the support rod. The connecting shaft is arranged parallel to the rotating shaft, with one end of the connecting shaft connected to the third gear and the other end of the connecting shaft connected to the fourth gear. This allows the third and fourth gears to be positioned on one side of the rotating shaft via the support rod and connecting shaft, facilitating rotational transmission and saving installation space.

[0019] Optionally, the reduction gear set further includes: a bearing, disposed between the second gear and the rotating shaft.

[0020] In the above technical solution, the bearing is arranged between the second gear and the rotating shaft, that is, the second gear is installed on the rotating shaft through the bearing to realize that the second gear is movably set on the rotating shaft, and then the rotating shaft supports the installation position of the second gear, and the fourth gear drives the second gear to rotate to reduce the rotation speed.

[0021] Optionally, the cleaning member includes: a support plate, which is arranged at the second end of the rotating shaft; and bristles, which are arranged on the support plate and in contact with the filter screen.

[0022] In the above technical solution, the support plate is disposed at the second end of the rotating shaft. In other words, the support plate can be mounted on the second end of the rotating shaft so that rotation of the rotating shaft drives the support plate to rotate. The bristles are fixed to the support plate and contact the filter so that rotation of the support plate drives the bristles to rotate, thereby cleaning dust deposited on the filter.

[0023] Optionally, the self-cleaning component further includes a reduction gear set; the support plate is connected to the output end of the reduction gear set.

[0024] In the above technical solution, when the self-cleaning assembly includes a reduction gear set, the support plate is connected to the output end of the reduction gear set, so that the rotation of the rotating shaft is transmitted to the support plate through the reduction gear set, thereby reducing the rotation speed and achieving noise reduction. In this case, the support plate is arranged at the second end of the rotating shaft, and the rotating shaft is used to provide support for the support plate. The reduction gear set can transmit motion to drive the rotation of the support plate.

[0025] Optionally, the hood further includes: a base, which can be connected to the air inlet pipe; and a fan blade group rotatably arranged on the base.

[0026] In the above technical solution, the base is connectable to the air inlet pipe. That is, the base of the hood enables the hood to be mounted on the air inlet pipe so that the hood is positioned on the air inlet side of the air inlet pipe. The fan assembly is rotatably mounted on the base. That is, under the action of external wind, the fan assembly can rotate relative to the base, thereby driving the cleaning element to rotate relative to the filter to clean the filter.

[0027] In some embodiments, a fresh air device is also provided, including: a device body, the device body including an air inlet pipe with an air inlet, and a filter is arranged in the air inlet pipe; a self-cleaning component for the fresh air device as in any of the previous embodiments is arranged in the device body and located on the air inlet side of the air inlet pipe, for cleaning the filter.

[0028] In the above technical solution, the fresh air device includes a device body and a self-cleaning component for the fresh air device as in any of the previous embodiments. The self-cleaning component can realize self-cleaning of the filter, save energy, have a good cleaning effect, improve the safety of the filter cleaning work, and also improve the air intake volume and air intake efficiency of the fresh air device.

[0029] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0031] Figure 1 is a schematic structural diagram of a self-cleaning assembly provided by an embodiment of the present disclosure;

[0032] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0033] Figure 3 yes Figure 1 A schematic diagram of the internal structure of the self-cleaning component provided in the illustrated embodiment;

[0034] Figure 4 yes Figure 1 A schematic diagram of the arrangement relationship of the rotating shaft, the reduction gear set and the cleaning member provided in the illustrated embodiment;

[0035] Figure 5 is a schematic structural diagram of a cleaning element provided by an embodiment of the present disclosure;

[0036] Figure 6 It is a structural diagram of the fresh air device according to an embodiment of the present disclosure;

[0037] Figure 7 yes Figure 6 The illustrated embodiment provides a schematic diagram of the arrangement relationship between the self-cleaning assembly and the air inlet duct.

[0038] Reference numerals:

[0039] 100: Self-cleaning assembly; 101: Hood; 1011: Blade assembly; 1012: Rotating shaft; 1013: Base; 102: Cleaning element; 1021: Support plate; 1022: Bristles; 103: Reduction gear set; 1031: First gear; 1032: Second gear; 1033: Third gear; 1034: Fourth gear; 1035: Support rod; 1036: Connecting shaft; 1037: Bearing;

[0040] 200: Fresh air device; 201: Air inlet pipe; 2011: Air inlet; 202: Filter; 203: Device body. DETAILED DESCRIPTION

[0041] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0042] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0044] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0045] Unless otherwise stated, the term "plurality" means two or more.

[0046] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0047] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0049] Combine Figures 1 to 7 As shown, an embodiment of the present disclosure provides a self-cleaning component 100 for a fresh air device. The fresh air device 200 includes an air inlet pipe 201 having an air inlet 2011, and a filter 202 is arranged in the air inlet pipe 201. The self-cleaning component 100 includes a hood 101 and a cleaning member 102. The hood 101 is arranged on the air inlet 2011 side of the air inlet pipe 201. The hood 101 includes a fan blade group 1011 and a rotating shaft 1012. The rotating shaft 1012 includes a first end and a second end, and the first end is connected to the fan blade group 1011. The cleaning member 102 is arranged at the second end of the rotating shaft 1012, and the cleaning member 102 is in contact with the filter 202. The fan blade group 1011 can rotate under the action of external wind force, and the rotation of the fan blade group 1011 drives the rotating shaft 1012 to rotate, thereby driving the cleaning member 102 to rotate, so that the cleaning member 102 cleans the filter 202.

[0050] In this embodiment, the fresh air device 200 includes an air inlet pipe 201 having an air inlet 2011. Fresh air from outside is introduced into the room through the air inlet pipe 201. A filter 202 is provided in the air inlet pipe 201 to filter dust and other pollutants in the air to clean the air entering the room.

[0051] In this embodiment, the hood 101 is disposed on the air inlet 2011 side of the air inlet pipe 201. That is, the hood 101 is disposed on the air inlet pipe 201 and is located on a side close to the air inlet 2011. The hood 101 can block dust and reduce the amount of dust that enters the air inlet 2011. The hood 101 includes a blade assembly 1011 and a rotating shaft 1012. The blade assembly 1011 rotates under the action of wind at the air inlet 2011, providing power for the cleaning unit 102 to perform its cleaning operation. The rotation of the blade assembly 1011 can be achieved solely through natural wind power, without the need for other energy sources, thereby saving energy. The first end of the rotating shaft 1012 is connected to the blade assembly 1011, so that the rotation of the blade assembly 1011 drives the rotation of the rotating shaft 1012. The cleaning member 102 is arranged at the second end of the rotating shaft 1012. The cleaning member 102 is in contact with the filter 202 so that the rotation of the rotating shaft 1012 can drive the cleaning member 102 to rotate, so that the cleaning member 102 can clean the filter 202, thereby realizing the self-cleaning of the filter 202, saving energy, and having a good cleaning effect. It avoids the situation of manual high-altitude operation to clean the filter in related technologies, improves the safety of the cleaning work of the filter 202, and reduces the cost of use.

[0052] Combine Figures 1 to 4 As shown, in some embodiments, the self-cleaning assembly 100 further includes a reduction gear set 103. The reduction gear set 103 is disposed on the rotating shaft 1012 and includes an output end. The output end of the reduction gear set 103 is connected to the cleaning member 102 for reducing the rotation speed.

[0053] In this embodiment, the reduction gear set 103 is disposed on the rotating shaft 1012 so that the rotation of the rotating shaft 1012 can be transmitted through the reduction gear set 103 and decelerated. The output end of the reduction gear set 103 is connected to the cleaning member 102. In other words, the rotation of the rotating shaft 1012 is transmitted to the cleaning member 102 via the reduction gear set 103. During the rotation transmission process, the rotation speed can be reduced. That is, compared to the rotation speed of the rotating shaft 1012, the cleaning member 102 can rotate at a lower speed to clean the filter 202, thereby reducing cleaning noise.

[0054] In this embodiment, the hood 101 cooperates with the reduction gear set 103 to reduce the rotation speed of the cleaning member 102, reduce the starting wind speed of the cleaning member 102, increase the rotation torque, and reduce noise.

[0055] Combine Figures 1 to 4As shown, in some embodiments, the reduction gear set 103 includes a first gear 1031, a second gear 1032, a third gear 1033, and a fourth gear 1034. The first gear 1031 is disposed on the rotating shaft 1012. The second gear 1032 is movably disposed on the rotating shaft 1012 and spaced apart from the first gear 1031. The second gear 1032 serves as the output end of the reduction gear set 103 and is connected to the cleaning member 102. The third gear 1033 and the fourth gear 1034 are coaxially disposed. The third gear 1033 and the fourth gear 1034 are disposed on one side of the rotating shaft 1012. The third gear 1033 meshes with the first gear 1031. The fourth gear 1034 meshes with the second gear 1032. The first gear 1031 has a smaller number of teeth than the third gear 1033. And / or the fourth gear 1034 has a smaller number of teeth than the second gear 1032.

[0056] In this embodiment, the first gear 1031 is disposed on the rotating shaft 1012 . Specifically, the first gear 1031 is fixed to the rotating shaft 1012 , so that the rotation of the rotating shaft 1012 can drive the first gear 1031 to rotate.

[0057] In this embodiment, the third gear 1033 and the fourth gear 1034 are both disposed on one side of the rotating shaft 1012, allowing the third gear 1033 to mesh with the first gear 1031 and the fourth gear 1034 to mesh with the second gear 1032, thereby conserving installation space. The first gear 1031 meshes with the third gear 1033, so that rotation of the first gear 1031 drives rotation of the third gear 1033. The third gear 1033 and the fourth gear 1034 are coaxial, enabling synchronous rotation of the third gear 1033 and the fourth gear 1034. The fourth gear 1034 meshes with the second gear 1032, so that rotation of the fourth gear 1034 drives rotation of the second gear 1032.

[0058] In this embodiment, the second gear 1032 is movably mounted on the rotating shaft 1012. That is, the rotating shaft 1012 is used to support the mounting position of the second gear 1032, and the rotation of the second gear 1032 is driven by the fourth gear 1034, thereby reducing the rotational speed through the transmission process of the first gear 1031, the third gear 1033, the fourth gear 1034, and the second gear 1032. The second gear 1032 is spaced apart from the first gear 1031. Specifically, the second gear 1032 is located on the side of the first gear 1031 near the air inlet pipe 201, so that the second gear 1032, as the output end of the reduction gear set 103, is connected to the cleaning member 102, thereby enabling the second gear 1032 to drive the cleaning member 102 to rotate.

[0059] In this embodiment, the number of teeth on the first gear 1031 is smaller than that on the third gear 1033, thereby reducing the rotational speed during the transmission process from the first gear 1031 to the third gear 1033. The number of teeth on the fourth gear 1034 is smaller than that on the second gear 1032, further reducing the rotational speed. Compared to the rotational speed of the rotating shaft 1012, the cleaning member 102 can rotate at a lower speed to clean the filter 202, thereby reducing cleaning noise.

[0060] Optionally, the number of teeth of the third gear 1033 is three times the number of teeth of the first gear 1031 .

[0061] Optionally, the number of teeth of the third gear 1033 is four times the number of teeth of the first gear 1031 .

[0062] Optionally, the number of teeth of the second gear 1032 is three times the number of teeth of the fourth gear 1034 .

[0063] Optionally, the number of teeth of the second gear 1032 is four times the number of teeth of the fourth gear 1034 .

[0064] Combine Figures 1 to 4 As shown, in some embodiments, the first gear 1031 and the fourth gear 1034 have the same number of teeth, and / or the second gear 1032 and the third gear 1033 have the same number of teeth.

[0065] In this embodiment, the first gear 1031 and the fourth gear 1034 have the same number of teeth, which facilitates production and reduces costs. The second gear 1032 and the third gear 1033 have the same number of teeth, which facilitates production and reduces costs.

[0066] In this embodiment, the specific number of teeth of the first gear 1031 , the second gear 1032 , the third gear 1033 and the fourth gear 1034 is not limited and can be selected according to needs.

[0067] Combine Figures 1 to 4 As shown, in some embodiments, the reduction gear set 103 further includes a support rod 1035 and a connecting shaft 1036. One end of the support rod 1035 is connected to the rotating shaft 1012. The connecting shaft 1036 is arranged parallel to the rotating shaft 1012. One end of the connecting shaft 1036 is connected to the third gear 1033, and the other end of the connecting shaft 1036 is connected to the fourth gear 1034. The middle portion of the connecting shaft 1036 is movably connected to the end of the support rod 1035 that is away from the rotating shaft 1012.

[0068] In this embodiment, one end of the support rod 1035 is connected to the rotating shaft 1012 , so that the rotating shaft 1012 can support the support rod 1035 , and further the support rod 1035 supports the third gear 1033 and the fourth gear 1034 .

[0069] In this embodiment, the middle portion of the connecting shaft 1036 is movably connected to the end of the support rod 1035 away from the rotation axis 1012, so that the connecting shaft 1036 can move relative to the support rod 1035. For example, a bearing is provided at the connection between the support rod 1035 and the connecting shaft 1036 to enable the connecting shaft 1036 to rotate relative to the support rod 1035, that is, the middle portion of the connecting shaft 1036 is movably connected to the support rod 1035.

[0070] In this embodiment, the connecting shaft 1036 is arranged parallel to the rotating shaft 1012, one end of the connecting shaft 1036 is connected to the third gear 1033, and the other end of the connecting shaft 1036 is connected to the fourth gear 1034, so that the third gear 1033 and the fourth gear 1034 are arranged on one side of the rotating shaft 1012 through the support rod 1035 and the connecting shaft 1036, which facilitates rotation transmission and saves installation space.

[0071] Combine Figure 2 and Figure 4 As shown, in some embodiments, the reduction gear set 103 further includes a bearing 1037 . The bearing 1037 is disposed between the second gear 1032 and the rotating shaft 1012 .

[0072] In this embodiment, the bearing 1037 is arranged between the second gear 1032 and the rotating shaft 1012, that is, the second gear 1032 is installed on the rotating shaft 1012 through the bearing 1037, so that the second gear 1032 can be movably set on the rotating shaft 1012, and then the rotating shaft 1012 supports the installation position of the second gear 1032, and the fourth gear 1034 drives the second gear 1032 to rotate to reduce the rotation speed.

[0073] Combine Figure 5 As shown, in some embodiments, the cleaning member 102 includes a support plate 1021 and bristles 1022. The support plate 1021 is disposed at the second end of the rotating shaft 1012. The bristles 1022 are disposed on the support plate 1021 and contact the filter 202.

[0074] In this embodiment, the support plate 1021 is disposed at the second end of the rotating shaft 1012. In other words, the support plate 1021 can be mounted on the second end of the rotating shaft 1012 so that the rotation of the rotating shaft 1012 can drive the rotation of the support plate 1021. The bristles 1022 are fixed to the support plate 1021 and contact the filter 202. The rotation of the support plate 1021 can drive the rotation of the bristles 1022, thereby cleaning dust deposited on the filter 202.

[0075] In actual use, the self-cleaning assembly 100 is installed at the air inlet 2011 of the air inlet pipe 201. The external wind force drives the blade assembly 1011 to rotate, achieving a non-powered structure. The blade assembly 1011 drives the rotating shaft 1012 to rotate, and the rotating shaft 1012 drives the support plate 1021 to rotate. During the rotation of the support plate 1021, the bristles 1022 contact the filter 202, cleaning the filter 202 from impurities such as catkins, hair, and dust.

[0076] In this embodiment, the bristles 1022 are fixed to the support plate 1021 in any manner, as long as the support plate 1021 rotates to drive the bristles 1022 to rotate. The cleaning range of the bristles 1022 is adapted to the area of ​​the filter 202.

[0077] Optionally, the bristles 1022 are made of nylon, polypropylene or metal wire.

[0078] In actual application, different materials of bristles 1022 can be adapted according to the impurities and wind speed in different areas. For example, in areas with strong winds and heavy dirt, harder bristles 1022 can be used to effectively improve the dirt removal ability. For another example, in areas with weak winds and less dirt, softer bristles 1022 can be used to improve durability and reduce resistance.

[0079] Optionally, the cleaning member 102 includes a brush. In other words, the cleaning member 102 can directly use a brush in the prior art to clean the filter 202.

[0080] Combine Figures 1 to 4 As shown, in some embodiments, the self-cleaning assembly 100 further includes a reduction gear set 103. The support plate 1021 is connected to the output end of the reduction gear set 103.

[0081] In this embodiment, when the self-cleaning assembly 100 includes a reduction gear set 103, the support plate 1021 is connected to the output end of the reduction gear set 103, so that the rotation of the rotating shaft 1012 is transmitted to the support plate 1021 through the reduction gear set 103, thereby reducing the rotation speed and achieving noise reduction. In this case, the support plate 1021 is arranged at the second end of the rotating shaft 1012, and the rotating shaft 1012 is used to provide support for the support plate 1021. The reduction gear set 103 can transmit motion to drive the rotation of the support plate 1021. In this embodiment, a bearing can be provided between the support plate 1021 and the rotating shaft 1012 so that the rotating shaft 1012 provides support for the support plate 1021.

[0082] Combine Figures 1 to 4 As shown, optionally, the support plate 1021 is connected to the second gear 1032 , so that the second gear 1032 rotates to drive the support plate 1021 to rotate, thereby driving the bristles 1022 to rotate to clean the filter 202 .

[0083] Combine Figure 1 and Figure 3 As shown, in some embodiments, the hood 101 further includes a base 1013. The base 1013 can be connected to the air inlet pipe 201. The fan blade assembly 1011 is rotatably disposed on the base 1013.

[0084] In this embodiment, the base 1013 can be connected to the air inlet pipe 201. In other words, the base 1013 of the hood 101 can be used to mount the hood 101 on the air inlet pipe 201 so that the hood 101 is positioned on the air inlet port 2011 side of the air inlet pipe 201. In this embodiment, the method of connecting the base 1013 to the air inlet pipe 201 is not limited. For example, the base 1013 can be connected to the air inlet pipe 201 via a connecting bracket (not shown).

[0085] In this embodiment, the fan blade assembly 1011 is rotatably disposed on the base 1013 , that is, under the action of external wind force, the fan blade assembly 1011 can rotate relative to the base 1013 , thereby driving the cleaning member 102 to rotate relative to the filter 202 to clean the filter 202 .

[0086] In this embodiment, the hood 101 can be a conventional hood. For example, the base 1013 can be a cylindrical structure. For another example, the blade assembly 1011 can include a plurality of blades arranged in sequence along the circumference of the base 1013. The blade shape can be designed using aerodynamic principles to improve rotation efficiency.

[0087] In this embodiment, the non-powered hood 101 drives the cleaning element 102 to rotate to clean the filter 202, achieving energy-free cleaning, reducing usage costs and manual cleaning costs. In addition, the hood 101 can also provide protection against water, rain, and impurities.

[0088] Combine Figures 1 to 7 As shown, embodiments of the present disclosure also provide a fresh air device 200. Fresh air device 200 includes a device body 203 and a self-cleaning assembly 100 for fresh air device 200, as described in any of the previous embodiments. Device body 203 includes an air inlet pipe 201 having an air inlet 2011. A filter 202 is disposed within air inlet pipe 201. The self-cleaning assembly 100 is disposed within device body 203, located on the air inlet 2011 side of air inlet pipe 201, and is used to clean filter 202.

[0089] In this embodiment, the fresh air device 200 includes a device body 203 and a self-cleaning component 100 for the fresh air device 200 as in any of the previous embodiments. The self-cleaning component 100 can realize self-cleaning of the filter 202, save energy, have a good cleaning effect, improve the safety of the cleaning work of the filter 202, and also improve the air intake volume and air intake efficiency of the fresh air device 200.

[0090] In this embodiment, the self-cleaning component 100 can reduce the probability of impurities accumulating on the filter 202 through the airflow, so that the fresh air device 200 maintains a continuous air intake, reduces wind resistance, improves air intake efficiency, and reduces noise.

[0091] In this embodiment, the device body 203 adopts a fresh air device in the related art, and a self-cleaning component 100 is provided on the air inlet pipe 201 of the fresh air device to achieve self-cleaning of the filter 202.

[0092] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A self-cleaning assembly for a fresh air device, the fresh air device comprising an air inlet pipe having an air inlet, a filter screen being arranged in the air inlet pipe, characterized in that: Self-cleaning components include: A hood is provided on the air inlet side of the air inlet pipe, the hood includes a fan blade group and a rotating shaft, the rotating shaft includes a first end and a second end, and the first end is connected to the fan blade group; A cleaning member is disposed at the second end of the rotating shaft, the cleaning member being in contact with the filter screen; The fan blade group can rotate under the action of external wind force. The rotation of the fan blade group drives the rotation shaft to rotate, and then drives the cleaning member to rotate, so that the cleaning member cleans the filter screen.

2. The self-cleaning assembly according to claim 1, characterized in that Also includes: The reduction gear set is arranged on the rotating shaft and includes an output end. The output end of the reduction gear set is connected to the cleaning member for reducing the rotation speed.

3. The self-cleaning assembly according to claim 2, characterized in that The reduction gear set includes: A first gear is disposed on the rotating shaft; The second gear is movably arranged on the rotating shaft and spaced apart from the first gear. The second gear serves as an output end of the reduction gear set and is connected to the cleaning member. a coaxially arranged third gear and a fourth gear, disposed on one side of the rotating shaft, the third gear meshing with the first gear, and the fourth gear meshing with the second gear; The number of teeth of the first gear is smaller than that of the third gear; and / or the number of teeth of the fourth gear is smaller than that of the second gear.

4. The self-cleaning assembly according to claim 3, characterized in that The first gear and the fourth gear have the same number of teeth; and / or, The second gear and the third gear have the same number of teeth.

5. The self-cleaning assembly according to claim 3, characterized in that The reduction gear set also includes: A support rod, one end of which is connected to the rotating shaft; The connecting shaft is arranged parallel to the rotating shaft, one end of the connecting shaft is connected to the third gear, and the other end is connected to the fourth gear. The middle part of the connecting shaft is movably connected to the end of the support rod away from the rotating shaft.

6. The self-cleaning assembly according to claim 3, characterized in that The reduction gear set also includes: The bearing is arranged between the second gear and the rotating shaft.

7. The self-cleaning assembly according to any one of claims 1 to 6, characterized in that Cleaning parts include: a support plate, disposed at the second end of the rotating shaft; The bristles are arranged on the support plate and are in contact with the filter screen.

8. The self-cleaning assembly according to claim 7, characterized in that The self-cleaning assembly also includes a reduction gear set; The supporting plate is connected to the output end of the reduction gear set.

9. The self-cleaning assembly according to any one of claims 1 to 6, characterized in that: The hood also includes: A base capable of being connected to the air inlet pipe; The fan blade assembly is rotatably arranged on the base.

10. A fresh air device, characterized in that: include: The device body includes an air inlet pipe with an air inlet, and a filter is provided in the air inlet pipe; The self-cleaning component for a fresh air device according to any one of claims 1 to 9 is arranged on the device body and located on the air inlet side of the air inlet pipe, and is used to clean the filter.

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