Fan, cleaning equipment and cleaning system

Abstract

The utility model provides a draught fan, cleaning equipment and a cleaning system. The draught fan comprises a machine body and a rectification net. The machine body comprises an air inlet; the rectifying net comprises a mesh part and a mounting part surrounding the mesh part, the mounting part is connected to the edge of the air inlet, and the mesh part is located on an air inlet path of the fan; the mesh part comprises the through holes which are evenly distributed, the density of the through holes is configured to meet the specified density range, and the technical problem that an existing draught fan is large in noise can be solved.

Description

Technical Field

[0001] This disclosure relates to the field of cleaning tool technology, specifically to a fan, cleaning equipment, and cleaning system. Background Technology

[0002] Cleaning devices, such as floor scrubbers and robotic vacuum cleaners, are gradually becoming cleaning tools in people's daily lives. Their working principle involves an electric motor driving a fan to rotate at high speed, generating negative pressure to create airflow and a pressure difference. This pressure difference and airflow then draw debris or dust into the vacuum cleaner's collection chamber, thus achieving dust removal. However, in actual use, these fans are known for their high noise levels, which can easily cause noise pollution to the environment. Utility Model Content

[0003] In view of the problems existing in the prior art, this disclosure provides a fan, cleaning equipment and cleaning system to improve the technical problem of high noise in existing fans.

[0004] To achieve the above and other related objectives, a first aspect of this disclosure provides a fan, which includes a body and a rectifier mesh; the body includes a housing and an air inlet disposed on the housing, the housing including a protrusion surrounding the air inlet and protruding outward from the housing; the rectifier mesh includes a mesh portion and a mounting portion surrounding the mesh portion, the mounting portion being mounted on the protrusion, the mesh portion being located on the air inlet path of the fan; the mesh portion includes uniformly distributed through holes, the density of which is configured to satisfy a specified density range.

[0005] In the above technical solution, a rectifier mesh is installed at the air inlet of the fan, with the mesh portion located on the air intake path. The evenly distributed through-holes on the mesh portion are configured within a specific density range. This arrangement can disrupt the large vortex formed at the air inlet, thereby reducing the non-uniformity of the air velocity at the air inlet. According to Bernoulli's principle, this design reduces the pressure gradient, ultimately achieving a noise reduction effect. Simultaneously, this structure optimizes airflow distribution, allowing the fan to maintain good aerodynamic efficiency while reducing noise.

[0006] In one embodiment of the fan disclosed herein, the density of the through holes ranges from 50 mesh to 300 mesh.

[0007] In the above technical solution, the density of the through holes is within the above range. The rectifier mesh can effectively disperse the large eddies at the air inlet and avoid insufficient rectification due to the mesh being too sparse. It can also prevent the increase of wind resistance due to the mesh being too dense, thereby achieving the best balance between noise reduction and maintaining smooth airflow.

[0008] In one embodiment of the fan disclosed herein, the mesh portion covers the air inlet, and the shape of the mesh portion corresponds to the cross-sectional shape of the air inlet.

[0009] In the above technical solution, the mesh section completely covers the air inlet, ensuring that all airflow entering the fan undergoes rectification, effectively dispersing vortices throughout the air inlet area, avoiding localized airflow turbulence, and thus reducing noise more evenly. The shape of the mesh section matches the cross-section of the air inlet, allowing airflow to pass evenly along the rectification mesh, reducing turbulence or wind resistance caused by shape mismatch, and improving the aerodynamic efficiency of the fan.

[0010] In one embodiment of the fan disclosed herein, the shape of the through hole is a rotationally symmetric figure.

[0011] In the above technical solution, the rotationally symmetrical through-hole structure allows airflow to pass uniformly in all directions, avoiding local velocity differences caused by asymmetrical orifice shape, thereby reducing turbulence and further reducing noise. The rotationally symmetrical orifice shape can also guide airflow smoothly into the fan along the axis, reducing eddies and airflow separation, improving air intake efficiency, and reducing energy loss caused by airflow turbulence.

[0012] In one embodiment of the fan disclosed herein, the diameter of the through hole ranges from 0.1 mm to 0.5 mm.

[0013] In the above technical solutions, a diameter of less than 0.1mm increases the risk of blockage and a sharp increase in air resistance, while a diameter greater than 0.5mm leads to insufficient rectification. A diameter within the range of 0.1mm to 0.5mm achieves a better balance between noise reduction and ventilation efficiency.

[0014] In one embodiment of the wind turbine disclosed herein, the thickness of the rectifier mesh ranges from 0.1 mm to 2 mm.

[0015] In the above technical solution, a minimum thickness of 0.1mm ensures that the rectifier mesh has sufficient structural rigidity and rectification effect, while a thickness not exceeding 2mm avoids adding unnecessary weight and increasing airflow resistance. The thickness of the rectifier mesh, ranging from 0.1mm to 2mm, balances the structural performance and rectification effect.

[0016] In one embodiment of the wind turbine disclosed herein, the rectifier mesh is an etched mesh or a woven mesh.

[0017] In the above technical solutions, etched mesh allows for precise control of the shape and distribution of through-holes, resulting in high overall strength and strong resistance to deformation. Woven mesh can generate a three-dimensional rectification effect, more effectively dispersing eddies and exhibiting better flexibility and fatigue resistance. While ensuring rectification and noise reduction effects, these two different solutions provide flexibility in process selection for various application scenarios.

[0018] In one embodiment of the fan disclosed herein, the edges of the mounting portion and the air inlet are connected by adhesive bonding and / or connecting structural members.

[0019] In the above technical solutions, both adhesive bonding and connection of structural components can ensure installation accuracy and sealing, and can reduce additional noise generated at the connection points.

[0020] In one embodiment of the fan disclosed herein, the body further includes a housing and an air intake assembly. The air intake assembly is disposed inside the housing, and the air inlet is opened in the housing. The housing includes a protrusion surrounding the air inlet and protruding outward from the housing, and a rectifier mesh is installed on the protrusion.

[0021] In the above technical solution, the convex structure forms a guiding channel, allowing the airflow to enter the air inlet more concentratedly and smoothly, reducing turbulence and eddies. The matching installation of the rectifier mesh and the convex part can suppress the transmission of shell vibration, further reducing mechanical noise. The convex part forms a physical extension, which can increase the distance between the rectifier mesh and the internal suction components, preventing the rectifier mesh from deforming inward due to air intake and interfering with the suction components.

[0022] In one embodiment of the fan disclosed herein, a recess surrounding the air inlet is formed on the side of the protrusion facing the air intake assembly. The recess includes an inner wall, a top wall, and an outer wall connected in sequence. The inner wall faces the air inlet, the outer wall is arranged around the outside of the inner wall, and the top wall connects the inner wall and the outer wall at the end away from the air intake assembly. A rectifier mesh is installed on the top wall.

[0023] In the above technical solution, the recessed three-wall structure forms a three-dimensional support frame, which helps to improve the structural strength of the convex part. In addition, the top wall provides a stable mounting platform for the rectifier mesh, and the overall structure can effectively resist airflow impact deformation.

[0024] In one embodiment of the fan disclosed herein, the top wall and the inner wall are connected by a smooth transition structure.

[0025] In the above technical solution, the smoothly transitioned curved surface structure can guide airflow more smoothly into the fan inlet, reducing turbulence and eddies at the inlet, and further reducing vibration and noise during fan operation. The curved surface structure also effectively reduces airflow resistance, improves fan intake efficiency, and thus enhances the overall performance of the fan.

[0026] A second aspect of this disclosure provides a cleaning device including a substrate and a fan of any of the above, the substrate having a mounting position and the fan being detachably mounted to the mounting position.

[0027] The aforementioned technical solution utilizes the aforementioned fan. Because a rectifier mesh is installed at the air inlet of the fan, with its mesh openings positioned along the air inlet path, it disrupts the large vortex formed at the air inlet, thereby reducing the unevenness of the airflow velocity at the inlet. According to Bernoulli's principle, this design reduces the pressure gradient, ultimately achieving noise reduction. Simultaneously, this structure optimizes airflow distribution, allowing the cleaning equipment to maintain good aerodynamic efficiency while reducing noise.

[0028] A third aspect of this disclosure provides a cleaning system, including the cleaning equipment described above and a base station adapted to the cleaning equipment.

[0029] In the above technical solution, by adopting the above cleaning equipment, the cleaning system can achieve the effect of reducing noise while maintaining good aerodynamic efficiency.

[0030] The disclosed fan features a rectifier mesh at the air inlet, with the mesh openings positioned along the air intake path. The mesh openings are evenly distributed with a specific density range of through-holes. This arrangement disrupts the large vortices formed at the air inlet, thereby reducing the uniformity of airflow velocity at the inlet. According to Bernoulli's principle, this design reduces the pressure gradient, ultimately achieving noise reduction. Simultaneously, this structure optimizes airflow distribution, enabling the fan to maintain good aerodynamic efficiency while reducing noise. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural schematic diagram of the wind turbine of this disclosure in one embodiment;

[0033] Figure 2 This is a front view of the wind turbine of this disclosure in one embodiment;

[0034] Figure 3 for Figure 2 Enlarged section view of point A in the middle;

[0035] Figure 4 This is a schematic diagram of the rectifier grid structure in one embodiment of the wind turbine of this disclosure;

[0036] Figure 5 In one embodiment of the wind turbine disclosed herein Figure 4 A magnified view of a section at point B in the middle;

[0037] Figure 6 In one embodiment of the wind turbine disclosed herein Figure 4 A magnified view of a section at point B in the middle;

[0038] Figure 7 This is a three-dimensional structural diagram of the cleaning equipment disclosed herein in one embodiment.

[0039] Component designation explanation:

[0040] 1. Cleaning equipment; 10. Fan; 20. Base; 21. Mounting position; 100. Body; 110. Air inlet; 120. Shell; 121. Protrusion; 122. Recess; 1221. Inner wall; 1222. Top wall; 1223. Outer wall; 1224. Smooth transition structure; 130. Suction assembly; 200. Rectifier screen; 210. Mesh section; 211. Through hole; 220. Mounting section. Detailed Implementation

[0041] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. It should also be understood that the terminology used in the embodiments of this disclosure is for describing specific implementation schemes and not for limiting the scope of protection of this disclosure. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0042] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise stated in this disclosure, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this disclosure, as well as the prior art known to those skilled in the art and the descriptions in this disclosure, may be implemented using any prior art methods, apparatus, and materials similar to or equivalent to the methods, apparatus, and materials in the embodiments of this disclosure.

[0043] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of this disclosure. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this disclosure.

[0044] Please see Figures 1 to 7 This disclosure provides a fan 10, a cleaning device 1, and a cleaning system, wherein the fan 10 can improve the technical problem of high noise in existing fans 10.

[0045] Please see Figures 1 to 2The first aspect of this disclosure provides a fan 10, which includes a body 100 and a rectifier screen 200. The body 100 can take various forms, including any structure capable of generating negative pressure suction through a high-speed rotating impeller to suck up dust and debris from the ground; no limitation is made thereto. In this embodiment, the body 100 is a turbine type, which has the advantages of small size, strong suction, and stable airflow. The body 100 includes an air inlet 110, which can have various shapes, such as circular, square, regular polygonal, or other irregular shapes; no limitation is made thereto. In this embodiment, the air inlet 110 is circular, which eliminates dead airflow angles, improves airflow efficiency, reduces pressure loss, and optimizes noise levels.

[0046] Please see Figure 1 The fan 10 also includes a rectifier mesh 200, which is installed at the air inlet 110 to disrupt the large vortex formed at the air inlet 110, thereby reducing the non-uniformity of the air velocity at the air inlet 110. The rectifier mesh 200 can be made of various materials, including but not limited to metals, plastics, and composite materials, such as stainless steel, aluminum alloys, and galvanized steel, and plastics such as nylon and polypropylene. The rectifier mesh 200 includes a mesh portion 210 and a mounting portion 220 surrounding the mesh portion 210. The mesh portion 210 is used for rectification, and its shape and size are not limited; for example, it can be circular, square, regular polygonal, or other irregular shapes. The mesh portion 210 can be flat, convex, or concave, and there is no limitation on this. In this embodiment, the mesh portion 210 is a planar structure flush with the mounting portion 220. This design is easy to manufacture, does not occupy too much space, and prevents collisions with the impeller inside the body 100. The mounting portion 220 surrounds the outer periphery of the mesh portion 210 and is connected to the edge of the air inlet 110. This arrangement allows the periphery of the mesh portion 210 to be evenly and stably fixed, preventing airflow dead spots or stress concentration points and reducing the risk of noise generation. The mounting position 21 of the mounting portion 220 at the air inlet 110 is not limited. For example, it can be directly connected to the outer periphery of the air inlet 110, or a protrusion or recess can be provided on the air inlet 110 to form a mating structure with the mounting portion 220 before fixing. The connection and fixing method between the mounting portion 220 and the air inlet 110 is not limited. It can be a detachable connection, such as fastener connection, riveting, or snap-fit, or a non-detachable connection, such as bonding or welding.

[0047] Please see Figure 2 and Figure 3To maximize the rectification effect of the mesh section 210, the mesh section 210 is positioned on the air inlet path of the fan 10 and includes evenly distributed through holes 211. The shape of the through holes 211 is not limited; for example, they can be circular, square, regular polygonal, or other irregular shapes, as long as they are evenly distributed. This arrangement can cut the large-scale irregular vortices at the air inlet 110 into small, uniform micro-vortices, reducing severe airflow turbulence and thus lowering noise. Since excessively dense through holes 211 increases wind resistance, while excessively sparse through holes results in insufficient rectification, the density of the through holes 211 is configured to meet a specified range, balancing rectification effect and smooth airflow. According to Bernoulli's principle, this design reduces the pressure gradient, ultimately achieving noise reduction. Simultaneously, it optimizes airflow distribution, allowing the fan 10 to maintain good aerodynamic efficiency while reducing noise.

[0048] Please see Figures 1 to 4 In one embodiment of the fan 10 disclosed herein, the density of the through holes 211 ranges from 50 mesh to 300 mesh. Therefore, when the density of the through holes 211 is within the above range, the rectifier mesh 200 can effectively disperse the large eddies at the air inlet 110, avoiding insufficient rectification due to excessively sparse mesh, and also prevent increased wind resistance due to excessively dense mesh, thereby achieving the best balance between noise reduction and maintaining smooth airflow.

[0049] Please refer to the table below. Select a fan 10 from cleaning equipment 1 and conduct noise tests under nine different application environments. Compare the noise levels without and with the rectifier mesh 200. The density of the through-holes 211 in the rectifier mesh 200 is selected as 50 mesh, 100 mesh, and 150 mesh, with three sets of measurements taken for each density. Then, calculate the percentage reduction in noise level of the fan 10 after installing the rectifier mesh 200 under the nine different application environments.

[0050]

[0051] As shown in the table above, selecting any one of the rectifier mesh 200 with a through-hole density of 50 mesh, 100 mesh, or 150 mesh can reduce noise. However, based on the average reduction ratio for each density, the rectifier mesh 200 with a density of 150 mesh is superior to the rectifier mesh 200 with a density of 100 mesh, and the rectifier mesh 200 with a density of 100 mesh is superior to the rectifier mesh 200 with a density of 50 mesh.

[0052] Please see Figures 2 to 3In one embodiment of the fan 10 disclosed herein, the mesh portion 210 covers the air inlet 110, meaning that all airflow passing through the air inlet 110 can be rectified by the mesh portion 210. This arrangement can effectively disperse the vortex in the entire air inlet area, avoid local airflow turbulence, and thus reduce noise more evenly. Furthermore, the shape of the mesh portion 210 corresponds to the cross-sectional shape of the air inlet 110, meaning the shape of the mesh portion 210 matches the cross-section of the air inlet 110. This arrangement allows the airflow to pass evenly along the rectifying mesh 200, reducing turbulence or wind resistance caused by shape mismatch, and improving the aerodynamic efficiency of the fan 10.

[0053] Please see Figures 4 to 6 In one embodiment of the fan 10 disclosed herein, the through-hole 211 is a rotationally symmetric shape. A rotationally symmetric shape is a shape that can coincide with itself after rotating around a fixed point by a certain angle. This includes, but is not limited to, shapes such as circles, regular polygons, stars, yin-yang symbols, and windmill blades. The rotationally symmetric through-hole 211 structure allows airflow to pass uniformly in all directions, avoiding local velocity differences caused by asymmetrical hole shapes, thereby reducing turbulence and further reducing noise. The rotationally symmetric hole shape can also guide airflow smoothly into the fan 10 along the axis, reducing eddies and airflow separation, improving air intake efficiency, and reducing energy loss caused by airflow turbulence.

[0054] Please see Figures 4 to 6 In one embodiment of the fan 10 disclosed herein, the diameter of the through hole 211 ranges from 0.1mm to 0.5mm. For example, it can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5mm. It should be noted that if the through hole 211 is a non-circular shape, such as a regular polygon, then the diameter of the through hole 211 refers to the diameter of its circumcircle or incircle. A diameter less than 0.1mm increases the risk of blockage and a significant increase in air resistance, while a diameter greater than 0.5mm leads to insufficient rectification. A diameter within the range of 0.1mm to 0.5mm achieves a better balance between noise reduction and ventilation efficiency. In this embodiment, the diameter of the through hole 211 is 0.25mm, which provides better noise reduction and air intake efficiency.

[0055] Please see Figures 4 to 6 In one embodiment of the fan 10 disclosed herein, the through hole 211 is circular or a regular polygon. In one embodiment, please refer to... Figure 5 The through-hole 211 is hexagonal in shape. In another embodiment, please refer to... Figure 6The through-hole 211 is circular in shape. The circular and hexagonal through-holes 211 possess perfect symmetry, enabling 360-degree airflow guidance without dead angles. Airflow does not undergo directional deflection as it passes through, ensuring highly uniform wind speed distribution. It also eliminates localized turbulence and secondary eddies caused by asymmetrical hole shapes. Furthermore, the smooth and continuous edges of the regularly shaped holes reduce airflow separation.

[0056] Please see Figure 3 In one embodiment of the fan 10 disclosed herein, the thickness of the rectifier mesh 200 ranges from 0.1mm to 2mm. For example, it can be 0.1mm, 0.5mm, 1mm, 1.5mm, or 2mm. The minimum thickness of 0.1mm ensures that the rectifier mesh 200 has sufficient structural rigidity and rectification effect, while a thickness not exceeding 2mm avoids adding unnecessary weight and increasing airflow resistance. The thickness of the rectifier mesh 200, satisfying the 0.1mm to 2mm range, balances the structural performance and rectification effect of the rectifier mesh 200.

[0057] Please see Figure 3 In one embodiment of the fan 10 disclosed herein, the rectifier mesh 200 is an etched mesh or a woven mesh. An etched mesh allows for precise control of the shape and distribution of the through-holes 211, resulting in high overall strength and strong resistance to deformation. A woven mesh can produce a three-dimensional rectification effect, more effectively dispersing eddies, and possesses better flexibility and fatigue resistance. While ensuring rectification and noise reduction effects, the two different solutions provide flexibility in process selection for different application scenarios.

[0058] Please see Figure 2 and Figure 3 In one embodiment of the fan 10 disclosed herein, the edges of the mounting portion 220 and the air inlet 110 are connected by adhesive bonding and / or connecting structural members. Adhesive bonding includes, but is not limited to, using adhesives such as epoxy resin or polyurethane adhesive. Connecting structural members are used for fixed connection. Connecting structural members can be screws, rivets, clips, and flanges, and can also be provided with grooves or protrusions adapted to the mounting portion 220 for snap-fit ​​or interference fit. In some embodiments, the mounting portion 220 and the air inlet 110 are bonded; in other embodiments, they are connected using connecting structural members; and in still other embodiments, both bonding and connecting structural member connections are used. In this embodiment, bonding is used. Both bonding and connecting structural member connections ensure installation accuracy and sealing, and can reduce additional noise generated at the connection points.

[0059] Please see Figure 2 and Figure 3In one embodiment of the fan 10 disclosed herein, the body 100 further includes a housing 120 and a suction assembly 130, the suction assembly 130 being disposed within the housing 120. The housing 120 is the outer shell of the body 100. The housing 120 can be a one-piece molded structure or an assembled structure. The material of the housing 120 can be metal, plastic, or composite material, but is not limited to these. The suction assembly 130 includes a motor and fan blades required for suction operations, which will not be described in detail here. An air inlet 110 is formed in the housing 120. The housing 120 includes a protrusion 121 surrounding the air inlet 110 and protruding outwards from the housing 120. That is, the protrusion 121 is provided on the outer periphery of the air inlet 110. The structure of the protrusion 121 forms a guiding channel, allowing the airflow to enter the air inlet 110 more concentratedly and smoothly, reducing turbulence and eddies. A rectifier mesh 200 is installed on the protrusion 121. The mating installation of the rectifier mesh 200 and the protrusion 121 can suppress the vibration transmission of the housing 120 and further reduce mechanical noise. The protrusion 121 forms a physical extension, which can keep the rectifier mesh 200 away from the internal suction assembly 130, preventing the rectifier mesh 200 from deforming due to air intake and interfering with the suction assembly 130.

[0060] Please see Figure 2 and Figure 3 In one embodiment of the fan 10 disclosed herein, a recess 122 surrounding the air inlet 110 is formed on the side of the protrusion 121 facing the suction assembly 130. The recess 122 includes an inner wall 1221, a top wall 1222, and an outer wall 1223 connected in sequence. The inner wall 1221 faces the air inlet 110, the outer wall 1223 is arranged around the outside of the inner wall 1221, and the top wall 1222 connects the inner wall 1221 and the outer wall 1223 at the end away from the suction assembly 130. The three-wall structure of the recess 122 forms a three-dimensional support frame, which helps to improve the structural strength of the protrusion 121. In addition, the top wall 1222 provides a stable mounting platform for the rectifier mesh 200. By mounting the rectifier mesh 200 on the top wall 1222, the overall structure can effectively resist the deformation caused by airflow impact.

[0061] Please see Figure 2 and Figure 3 In one embodiment of the fan 10 disclosed herein, the top wall 1222 and the inner wall 1221 are connected by a smooth transition structure 1224. The smooth transition curved structure guides airflow more smoothly into the fan 10's inlet 110, reducing turbulence and eddies at the inlet 110, and further reducing vibration and noise during fan 10 operation. The curved structure also effectively reduces airflow resistance, improves the fan 10's intake efficiency, and thus enhances the overall performance of the fan 10.

[0062] Please see Figure 7In a second aspect, this disclosure provides a cleaning device 1, including a base 20 and a fan 10 as described above. The base 20 is the main structural component of the cleaning device 1, and the fan 10 and other functional components are detachably installed within the base 20. In this embodiment, the base 20 has a mounting position 21, and the fan 10 is detachably installed in the mounting position 21. The mounting position 21 may be a recessed structure adapted to accommodate the fan 10. The cleaning device 1 involved in this disclosure may be a cleaning robot, including floor scrubbing robots or sweeping robots, but is not limited to these. Taking a sweeping robot as an example, to perform its cleaning function, the cleaning device 1 also includes a dust collection structure. The fan 10 is driven by an electric motor to rotate at high speed, generating negative pressure to form airflow and pressure difference. The pressure difference and airflow are used to suck garbage or dust into the dust collection structure of the cleaning device 1, thereby achieving dust removal. In some embodiments, the cleaning device 1 further includes a roller assembly (not shown) for cleaning wet dirt, and a water supply device (not shown) for supplying clean water to the roller assembly, the water supply device including a storage tank, a pump body, and a pipe assembly, etc.

[0063] In some other embodiments, the cleaning device 1 also includes an intelligent control system, which can integrate various functions according to actual needs. These functions may include, but are not limited to, autonomous travel planning based on sensors such as accelerometers, gyroscopes, and odometers; obstacle recognition and collision avoidance based on distance sensors and image recognition devices; autonomous walking based on mechanical mechanisms such as drive wheel sets, driven wheel sets, and drivers; human-computer interaction based on physical buttons, virtual buttons, displays, and indicator lights; energy supply based on rechargeable batteries; and intelligent control based on control circuits or control chips. These will not be elaborated upon further.

[0064] In the cleaning device 1 disclosed herein, since a rectifier mesh 200 is provided at the air inlet 110 of the aforementioned fan 10, and the mesh portion 210 of the rectifier mesh 200 is located on the air intake path, this arrangement can disrupt the large vortex formed at the air inlet 110, thereby reducing the non-uniformity of the air velocity at the air inlet 110. According to Bernoulli's principle, this design reduces the pressure gradient, ultimately achieving a noise reduction effect. At the same time, this structure optimizes the airflow distribution, enabling the cleaning device 1 to maintain good aerodynamic efficiency while reducing noise.

[0065] In a third aspect of this disclosure, a cleaning system (not shown in the figures) is provided, including the cleaning device 1 described above and a base station (not shown in the figures) adapted to the cleaning device 1. By employing the cleaning device 1, the cleaning system achieves the effect of reducing noise while maintaining good aerodynamic efficiency.

[0066] The disclosed fan features a rectifier mesh at the air inlet, with the mesh openings positioned along the air intake path. The mesh openings are evenly distributed with a specific density range of through-holes. This arrangement disrupts the large vortices formed at the air inlet, thereby reducing the uniformity of airflow velocity at the inlet. According to Bernoulli's principle, this design reduces the pressure gradient, ultimately achieving noise reduction. Simultaneously, this structure optimizes airflow distribution, allowing the fan to maintain good aerodynamic efficiency while reducing noise. Therefore, this disclosure effectively overcomes some practical problems in the prior art, thus possessing high utilization value and practical significance.

[0067] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the claims of this disclosure.

Claims

1. A fan (10), characterized in that, include: The body (100) includes a housing (120) and an air inlet (110) disposed on the housing (120). The housing (120) includes a protrusion (121) surrounding the air inlet (110) and protruding outward from the housing (120). A rectifier mesh (200) includes a mesh portion (210) and a mounting portion (220) surrounding the mesh portion (210). The mounting portion (220) is mounted on the protrusion (121), and the mesh portion (210) is located on the air inlet path of the fan (10). The mesh portion (210) includes evenly distributed through holes (211), the density of which is configured to satisfy a specified density range.

2. The fan (10) according to claim 1, characterized in that, The density of the through-hole (211) ranges from 50 mesh to 300 mesh.

3. The fan (10) according to claim 1, characterized in that, The mesh portion (210) covers the air inlet (110), and the shape of the mesh portion (210) corresponds to the cross-sectional shape of the air inlet (110).

4. The fan (10) according to claim 1, characterized in that, The through hole (211) has a rotationally symmetric shape.

5. The fan (10) according to claim 4, characterized in that, The diameter of the through hole (211) ranges from 0.1 mm to 0.5 mm.

6. The fan (10) according to claim 1, characterized in that, The thickness of the rectifier mesh (200) ranges from 0.1 mm to 2 mm.

7. The fan (10) according to claim 1, characterized in that, The rectifier mesh (200) is an etched mesh or a woven mesh.

8. The fan (10) according to claim 1, characterized in that, The edges of the mounting part (220) and the air inlet (110) are connected by adhesive bonding and / or connecting structural members.

9. The fan (10) according to claim 1, characterized in that, The body (100) also includes a suction assembly (130), which is disposed inside the housing (120).

10. The fan (10) according to claim 9, characterized in that, The protrusion (121) facing the suction assembly (130) has a recess (122) surrounding the air inlet (110). The recess (122) includes an inner wall (1221), a top wall (1222), and an outer wall (1223) connected in sequence. The inner wall (1221) faces the air inlet (110), and the outer wall (1223) is arranged around the outside of the inner wall (1221). The top wall (1222) connects the inner wall (1221) and the outer wall (1223) at one end away from the suction assembly (130). The rectifier mesh (200) is installed on the top wall (1222).

11. The fan (10) according to claim 10, characterized in that, The top wall (1222) and the inner wall (1221) are connected by a smooth transition structure (1224).

12. A cleaning device (1), characterized in that, Includes a base (20) and a fan (10) as described in any one of claims 1-11, wherein the base (20) has a mounting position (21) to which the fan (10) is detachably mounted.

13. A cleaning system, characterized in that, It includes the cleaning device (1) as described in claim 12 and a base station adapted to the cleaning device (1).

Images