Self-cleaning structure and fresh air device having the same

Abstract

The present invention provides a self-cleaning structure and a fresh air device having the same, wherein the self-cleaning structure comprises: a bracket; a support shaft, the support shaft is arranged on the bracket; a fan assembly, the fan assembly comprises a fan structure and a sweeping brush, the fan structure is rotatably arranged on the support shaft, and the sweeping brush is arranged on the first side of the fan structure; the fan assembly can move along the axial direction of the support shaft, and when the wind blows from the second side of the fan assembly to the first side of the fan assembly, the fan assembly rotates along the first direction. The technical solution of the present invention effectively solves the problem that the filter structure in the fresh air device in the prior art needs to be provided with a driving motor when cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and in particular to a self-cleaning structure and a fresh air device having the same. Background Art

[0002] When the fresh air device is in use, a filter structure needs to be set up, and the filter structure needs to be cleaned. The existing cleaning filter structure includes: a brush, a drive motor, and an ash storage box (needs to be cleaned). The drive motor drives the brush to clean the filter structure. When the ash storage box is filled with dust and debris, it needs to be manually disassembled and cleaned. Summary of the invention

[0003] The main purpose of the present invention is to provide a self-cleaning structure and a fresh air device having the same, so as to solve the problem that the filter structure in the fresh air device in the prior art needs to be provided with a driving motor when cleaning.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a self-cleaning structure is provided, comprising: a bracket; a support shaft, the support shaft is arranged on the bracket; a fan assembly, the fan assembly comprises a fan structure and a sweeping brush, the fan structure is rotatably arranged on the support shaft, and the sweeping brush is arranged on a first side of the fan structure; the fan assembly can move along the axial direction of the support shaft, and when wind blows from the second side of the fan assembly to the first side of the fan assembly, the fan assembly rotates along the first direction.

[0005] Furthermore, the fan structure includes a shaft sleeve, blades and a mounting portion, the shaft sleeve is mounted on the support shaft, the blades and the mounting portion are both mounted on the shaft sleeve, and the sweeping brush is mounted on the mounting portion.

[0006] Furthermore, the mounting portion comprises a plurality of mounting rods which are mounted on the shaft sleeve and extend radially, and a plurality of sweeping brushes which are mounted on the mounting rods.

[0007] Furthermore, each sweeping brush is connected to the mounting rod through snap fit.

[0008] Furthermore, the first end of the support shaft is located on the first side of the fan assembly, the second end of the support shaft is located on the second side of the fan assembly, and the support shaft is a cone with a gradually decreasing diameter in the direction from the first end of the support shaft to the second end of the support shaft.

[0009] Furthermore, the fan assembly also includes a fan end cover, which is arranged at the second end of the support shaft.

[0010] Furthermore, a side of the fan end cover close to the blades has a first protrusion, the first protrusion has a first inclined surface gradually rising in a first direction, and an end of the shaft sleeve close to the fan end cover has a second inclined surface matched with the first inclined surface.

[0011] Further, the first protrusion is a vertical surface in a direction opposite to the first direction.

[0012] Furthermore, there are multiple first protrusions, and the multiple first protrusions are arranged in a circular ring shape, and the diameter of the circular ring formed by the multiple first protrusions is the same as the diameter of the shaft sleeve.

[0013] Furthermore, the second end of the support shaft has a limiting portion, and the limiting portion cooperates with the shaft sleeve to limit the moving position of the shaft sleeve on the support shaft.

[0014] Furthermore, the limiting portion is a limiting convex ring.

[0015] According to another aspect of the present invention, a fresh air device is provided, comprising a filtering structure and a self-cleaning structure, wherein the filtering structure is located on a first side of a fan assembly, and the self-cleaning structure is the self-cleaning structure described above.

[0016] By applying the technical solution of the present invention, when the wind blows from the second side of the fan assembly to the first side of the fan assembly, the fan assembly moves along the supporting shaft toward the first side of the fan assembly and moves to the first extreme position, at which time the sweeping brush can touch the filter structure. The fan assembly rotates in the first direction, so that the sweeping brush can clean the filter structure. The above structure does not need to be provided with a driving motor and can clean the filter structure under the action of wind force. The technical solution of the present invention effectively solves the problem in the prior art that a driving motor needs to be provided when cleaning the filter structure in the fresh air device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic cross-sectional view of an embodiment of a self-cleaning structure according to the present invention is shown;

[0019] Figure 2 Shows Figure 1 A schematic cross-sectional view of the installation of a self-cleaning structure;

[0020] Figure 3 Shows Figure 1 An exploded schematic diagram of the self-cleaning structure;

[0021] Figure 4 Shows Figure 1 A schematic diagram of wind direction when the self-cleaning structure rotates along a first direction; and

[0022] Figure 5 Shows Figure 1 Schematic diagram of wind direction when the self-cleaning structure rotates along the second direction.

[0023] The above drawings include the following reference numerals:

[0024] 10. Bracket; 20. Support shaft; 30. Fan assembly; 31. Fan structure; 311. Bushing; 312. Blade; 313. Mounting part; 32. Brush; 33. Fan end cover; 40. Filter structure. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for clarity, the thickness of the layers and regions is enlarged, and the same reference numerals are used to represent the same devices, so their description will be omitted.

[0029] like Figures 1 to 5As shown, the self-cleaning structure of this embodiment includes: a bracket 10, a support shaft 20 and a fan assembly 30. The support shaft 20 is arranged on the bracket 10. The fan assembly 30 includes a fan structure 31 and a sweeping brush 32, the fan structure 31 is rotatably arranged on the support shaft 20, and the sweeping brush 32 is arranged on a first side of the fan structure 31. The fan assembly 30 can move along the axial direction of the support shaft 20, and when the wind blows from the second side of the fan assembly 30 to the first side of the fan assembly 30, the fan assembly 30 rotates along the first direction.

[0030] By applying the technical solution of this embodiment, when the wind blows from the second side of the fan assembly 30 to the first side of the fan assembly 30, the fan assembly 30 moves along the support shaft 20 to the first side of the fan assembly 30, and moves to the first extreme position, at which time the sweeping brush 32 can touch the filter structure 40. The fan assembly 30 rotates in the first direction, so that the sweeping brush 32 can clean the filter structure 40. The above structure does not need to be provided with a driving motor to achieve the cleaning of the filter structure 40 under the action of wind. The technical solution of this embodiment effectively solves the problem that the filter structure in the fresh air device in the prior art needs to be provided with a driving motor when cleaning.

[0031] It should be noted that the self-cleaning structure of the present embodiment is installed in the air duct of the fresh air device, so that the power for forming the wind can be formed by the fan of the fresh air device. When the wind blows from the second side of the fan assembly 30 to the first side of the fan assembly 30, the direction of the air flow is from indoors to outdoors, and the fan assembly 30 rotates in the first direction; when the wind blows from the first side of the fan assembly 30 to the second side of the fan assembly 30, the direction of the air flow is from outdoors to indoors, and the fan assembly 30 rotates in the second direction. The first direction and the second direction are opposite, for example, the first direction is counterclockwise, and the second direction is clockwise.

[0032] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the fan structure 31 includes a sleeve 311, blades 312 and a mounting portion 313, the sleeve 311 is mounted on the support shaft 20, the blades 312 and the mounting portion 313 are both mounted on the sleeve 311, and the sweeping brush 32 is mounted on the mounting portion 313. The above structure has low processing cost and is easy to manufacture. A bearing or a friction-reducing material such as lubricating oil, graphite, etc. can be set between the inner wall of the sleeve 311 and the outer wall of the support shaft 20.

[0033] like Figure 1 and Figure 2As shown, in the technical solution of this embodiment, the mounting portion 313 includes a plurality of mounting rods, which are mounted on the shaft sleeve 311 and extend radially, and a plurality of sweeping brushes 32 are mounted on the mounting rods. The arrangement of the mounting rods facilitates the installation of the sweeping brushes 32. The first end of each mounting rod is connected to the outer wall surface of the shaft sleeve 311, and the second end of each mounting rod is a free end. The sweeping brushes 32 are arranged in the direction from the first end of the mounting rod to the second end of the mounting rod, so that when the fan structure 31 rotates, the area cleaned by the fan structure 31 is a circular surface with the central axis of the support shaft 20 as the center. A mounting structure is arranged on one side of the mounting rod facing the first direction, for example, the mounting structure is a mounting hole, and the sweeping brush 32 is interference-fitted with the mounting hole, or the mounting structure is a buckle structure, and the sweeping brush is fixed to the mounting rod through the buckle structure.

[0034] like Figure 1 As shown, in the technical solution of this embodiment, each sweeping brush 32 is connected to the mounting rod by snap-fitting. The sweeping brush 32 of the above structure is easy to disassemble and assemble. The sweeping brush 32 is a wearing part, and the above structure makes it convenient and quick to replace the sweeping brush 32. It should be noted that there are three mounting rods and three blades 312. The side of each blade 312 is connected to the side of the mounting rod. The three mounting rods and the three blades 312 are evenly arranged along the circumference of the shaft sleeve 311, so that the force on the fan structure 31 is relatively balanced.

[0035] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the first end of the support shaft 20 is located at the first side of the fan assembly 30, and the second end of the support shaft 20 is located at the second side of the fan assembly 30. The support shaft 20 is a cone with a gradually decreasing diameter in the direction from the first end of the support shaft 20 to the second end of the support shaft 20. The above structure ensures that the fan assembly 30 is convenient to move, that is, in the process of the fan assembly 30 moving from the first end of the support shaft 20 to the second end of the support shaft 20, the gap between the sleeve 311 and the support shaft 20 becomes larger and larger, so that the fan assembly is convenient to move; on the other hand, when the fan assembly 30 is at the second end of the support shaft 20, the fan assembly 30 needs to rotate to clean the filter structure. At this time, the contact area between the fan assembly 30 and the support shaft 20 is large, and the rotation of the fan assembly 30 is relatively stable.

[0036] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the fan assembly 30 also includes a fan end cover 33, and the fan end cover 33 is arranged at the second end of the support shaft 20. The arrangement of the fan end cover can effectively protect the fan assembly 30 from escaping from the second end of the support shaft. Specifically, the fan end cover 33 is a radial extension rod.

[0037] like Figures 1 to 3As shown, in the technical solution of this embodiment, the fan end cover 33 has a first protrusion on one side close to the blade 312, the first protrusion has a first inclined surface gradually rising in a first direction, and the end of the shaft sleeve 311 close to the fan end cover 33 has a second inclined surface adapted to the first inclined surface. The above structure makes it easy for the fan assembly 30 to reach the first limit position, and when the fan assembly 30 moves from the second limit position to the first limit position, the movement of the fan assembly 30 is relatively stable.

[0038] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the first protrusion is a vertical surface in the direction opposite to the first direction. When the outdoor air blows into the indoor air, the fan assembly 30 is located at the second extreme position, at which time the fan assembly 30 is limited by the vertical surface of the first protrusion and the fan assembly 30 cannot rotate.

[0039] like Figures 1 to 3 As shown, in the technical solution of this embodiment, there are multiple first protrusions, and the multiple first protrusions are arranged in a circular ring, and the diameter of the circular ring formed by the multiple first protrusions is the same as the diameter of the shaft sleeve 311. The above structure makes the force of the fan assembly 30 more balanced, and the movement and stillness of the fan assembly 30 are more stable.

[0040] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the second end of the support shaft 20 has a limiting portion, and the limiting portion cooperates with the shaft sleeve 311 to limit the moving position of the shaft sleeve 311 on the support shaft 20. The setting of the limiting portion makes it difficult for the fan assembly 30 to escape from the first end of the support shaft 20. Specifically, the limiting portion is a limiting convex ring. The processing cost of the above structure is low. The support shaft 20 is an integrally formed structure.

[0041] The present application also provides a fresh air device, which includes a filter structure and a self-cleaning structure, wherein the filter structure is located on the first side of the fan assembly 30. The self-cleaning structure is the above-mentioned self-cleaning structure. The filter structure includes a filter screen. The fresh air device also includes a wind tube, wherein the self-cleaning structure and the filter structure are both arranged in the wind tube. When the fresh air blows from the outside to the inside, dirt in the gas adheres to the filter screen, such as catkins adhering to the filter screen. When the wind blows from the inside to the outside, the sweeping brush 32 sweeps off the dirt attached to the filter screen, and the swept dirt is blown to the outside with the wind, so that the fresh air device can realize the self-cleaning function.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fresh air device, comprising a filtering structure (40) and a self-cleaning structure, characterized in that: The self-cleaning structure comprises: Bracket (10); A support shaft (20), wherein the support shaft (20) is arranged on the bracket (10); A fan assembly (30), the fan assembly (30) comprising a fan structure (31) and a sweeping brush (32), the fan structure (31) being rotatably mounted on the support shaft (20), and the sweeping brush (32) being arranged on a first side of the fan structure (31); The fan assembly (30) is movable along the axial direction of the support shaft (20), and when wind blows from the second side of the fan assembly (30) to the first side of the fan assembly (30), the fan assembly (30) rotates along a first direction; The filtering structure (40) is located on a first side of the fan assembly (30); When wind blows from the second side of the fan assembly (30) to the first side of the fan assembly (30), the fan assembly (30) moves along the support shaft (20) to the first side of the fan assembly (30) and moves to a first extreme position. At this time, the sweeping brush (32) touches the filtering structure (40), and the sweeping brush (32) cleans the filtering structure (40); when wind blows from the second side of the fan assembly (30) to the first side of the fan assembly (30), the direction of air flow is from indoors to outdoors.

2. The fresh air device according to claim 1, characterized in that: The fan structure (31) comprises a shaft sleeve (311), blades (312) and a mounting portion (313); the shaft sleeve (311) is mounted on the support shaft (20); the blades (312) and the mounting portion (313) are both mounted on the shaft sleeve (311); and the sweeping brush (32) is mounted on the mounting portion (313).

3. The fresh air device according to claim 2, characterized in that: The mounting portion (313) comprises a plurality of mounting rods, the plurality of mounting rods being mounted on the shaft sleeve (311) and extending radially, and the plurality of sweeping brushes (32) being mounted on the mounting rods.

4. The fresh air device according to claim 3, characterized in that: Each of the sweeping brushes (32) is connected to the mounting rod through snap fit.

5. The fresh air device according to claim 2, characterized in that: The first end of the support shaft (20) is located on a first side of the fan assembly (30), the second end of the support shaft (20) is located on a second side of the fan assembly (30), and the support shaft (20) is a cone with a gradually decreasing diameter in a direction from the first end of the support shaft (20) to the second end of the support shaft (20).

6. The fresh air device according to claim 5, characterized in that: The fan assembly (30) further comprises a fan end cover (33), wherein the fan end cover (33) is arranged at the second end of the support shaft (20).

7. The fresh air device according to claim 6, characterized in that: The fan end cover (33) has a first protrusion on one side close to the blade (312), the first protrusion has a first inclined surface that gradually rises in the first direction, and the shaft sleeve (311) has a second inclined surface that matches the first inclined surface on one end close to the fan end cover (33).

8. The fresh air device according to claim 7, characterized in that: The first protrusion is a vertical surface in a direction opposite to the first direction.

9. The fresh air device according to claim 7, characterized in that: There are a plurality of first protrusions, and the plurality of first protrusions are arranged in a circular ring shape, and the diameter of the circular ring formed by the plurality of first protrusions is the same as the diameter of the shaft sleeve (311).

10. The fresh air device according to claim 5, characterized in that: The second end of the support shaft (20) has a limiting portion, and the limiting portion cooperates with the shaft sleeve (311) to limit the moving position of the shaft sleeve (311) on the support shaft (20).

11. The fresh air device according to claim 10, characterized in that: The limiting portion is a limiting convex ring.

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