Wind path structure and cleaning equipment

Abstract

The utility model is suitable for the technical field of household appliances, and provides an air path structure and cleaning equipment. The air path structure is used for the cleaning equipment and comprises an air inlet duct, a dust collection box and an air outlet duct which are sequentially communicated, and the air inlet duct and the air outlet duct are located on the front side of the dust collection box in the advancing direction of the cleaning equipment. The air inlet duct and the air outlet duct are both arranged on the front side of the dust collection box instead of being arranged on the two different sides of the dust collection box. According to the structural design, on one hand, the space occupied by the air path structure is reduced, on the premise that the cleaning function of the cleaning equipment can be kept, the overall size is reduced, and therefore storage and use are more convenient. On the other hand, the flowing path of the air flow in the air path structure can be smoother and more reasonable, the flowing path of the air flow is optimized, and therefore the overall cleaning effect is improved, and noise is reduced.

Description

Technical Field

[0001] This application belongs to the field of household appliance technology, and more specifically, relates to a wind tunnel structure and cleaning equipment. Background Technology

[0002] A sweeping robot, also known as a robotic vacuum cleaner, is a cleaning device that can automatically clean floors. In related technologies, a sweeping robot includes a casing, a sweeping brush, and an airflow structure. The sweeping brush and airflow structure are both mounted on the casing. The airflow structure includes an air inlet duct, a dust collection box, an air outlet duct, and a fan, all connected sequentially along a preset direction. The air inlet duct is located on one side of the sweeping brush and is connected to it. The dust collection box is located on the side of the air inlet duct furthest from the sweeping brush. The fan's suction end is connected to the air outlet duct, and its exhaust end is connected to the external environment.

[0003] While the aforementioned airflow structure can guide airflow and collect dust, it occupies a lot of space, resulting in a larger overall size of the sweeper. Utility Model Content

[0004] The purpose of this application is to provide a wind tunnel structure and cleaning equipment, which aims to solve the technical problem that the wind tunnel structure occupies too much space in the related art.

[0005] To achieve the above objectives, according to one aspect of this application, an airflow structure is provided for a cleaning device. The airflow structure includes an inlet air duct, a dust collection box, and an outlet air duct connected in sequence. The inlet air duct and the outlet air duct are located in front of the dust collection box in the forward direction of the cleaning device.

[0006] According to another aspect of this application, a cleaning device is provided, including a cleaning component and the aforementioned air duct structure, wherein the cleaning component is disposed on the side of the air inlet duct away from the dust collection box and is connected to the air inlet duct.

[0007] The beneficial effects of the airflow structure provided in this application are as follows: In this application, both the air inlet duct and the air outlet duct are located on the same side of the dust collection box. This structural design reduces the space required by the airflow structure, allowing the overall size of the cleaning unit to be reduced while maintaining its cleaning function, thus making it easier to store and use. On the other hand, it also makes the airflow path within the airflow structure smoother and more reasonable, optimizing the airflow path, thereby improving the overall cleaning effect and reducing noise. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the cleaning equipment provided in the embodiments of this application from a first-view perspective;

[0010] Figure 2 A schematic diagram of the cleaning device provided in this application embodiment with the cleaning roller brush hidden, viewed from a second perspective;

[0011] Figure 3 A top view of the concealed portion of the outer casing of the cleaning device provided in an embodiment of this application;

[0012] Figure 4 A schematic diagram of the assembled cleaning component and airflow structure provided in the embodiments of this application from a third-person perspective;

[0013] Figure 5 A schematic diagram of the assembled cleaning component and airflow structure provided in the embodiments of this application from a fourth-view perspective;

[0014] Figure 6 This is a schematic diagram of the structure of the power component provided in the embodiments of this application;

[0015] Figure 7 A schematic diagram of the airflow structure provided in the embodiments of this application from a fifth-person perspective;

[0016] Figure 8 A schematic diagram of the airflow structure provided in the embodiments of this application from a sixth-angle perspective;

[0017] Figure 9 A front view schematic diagram of the assembled cleaning component and airflow structure provided in an embodiment of this application;

[0018] Figure 10 A side view of the assembled cleaning component and airflow structure provided for an embodiment of this application;

[0019] Figure 11 for Figure 10 Cross-sectional view of BB;

[0020] Figure 12 for Figure 9 Schematic diagram of the cross section of AA;

[0021] The details of the reference numerals used in the above figures are as follows:

[0022] 100. Cleaning component; 110. Cleaning roller brush; 111. Roller brush body; 112. Dust collection area; 120. Mounting housing; 121. First cleaning opening; 122. Connecting port;

[0023] 200. Airflow structure;

[0024] 210. Air intake duct;

[0025] 220. Dust collection box; 221. Dust collection section; 222. Air outlet section; 2221. First area; 2222. Second area; 223. First surface; 2231. Dust inlet; 2232. Air outlet; 224. Second surface; 225. Inner wall of air guide;

[0026] 230. Air outlet duct; 231. Air outlet opening;

[0027] 240. Power component; 241. Air outlet;

[0028] 250. Filter components;

[0029] 300. Outer shell; 310. Second cleaning opening. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly or indirectly on that other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to that other element. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] In the description of this application, unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can mean A or B. "And / or" in this application is merely a description of the relationship between the related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] As described in the background section, a sweeping robot, also known as a robotic vacuum cleaner, is a cleaning device capable of automatically cleaning floors. In related technologies, a sweeping robot includes a housing, a sweeping brush, and an airflow structure. Both the sweeping brush and the airflow structure are mounted on the housing. The airflow structure includes an air inlet duct, a dust collection box, an air outlet duct, and a fan, all connected sequentially along a preset direction. The air inlet duct is located on one side of the sweeping brush and is connected to it. The dust collection box is located on the side of the air inlet duct furthest from the sweeping brush. The fan's suction end is connected to the air outlet duct, and its exhaust end is connected to the external environment. While this airflow structure effectively guides airflow and collects dust, it occupies considerable space, resulting in a larger overall size for the sweeping robot.

[0036] Reference Figures 1 to 9 According to one aspect of this application, an embodiment of this application provides a cleaning device, which includes a cleaning component 100 and an air duct structure 200. The cleaning component 100 is used to remove foreign objects from the surface to be cleaned; the air duct structure 200 is located on one side of the cleaning component 100 and communicates with the cleaning component 100, and is used to collect foreign objects.

[0037] In this embodiment, the cleaning device is a robotic vacuum cleaner; in other embodiments, the cleaning device may also be a vacuum cleaner or a floor scrubber. Foreign matter refers to at least one of the following: hair, dust, debris, etc. The cleaning component 100 refers to a cleaning part capable of detaching foreign matter from the surface to be cleaned. As the cleaning device operates, the cleaning component 100 detaches the foreign matter from the surface by contacting it, and the airflow structure 200 draws the foreign matter into its interior for collection.

[0038] Reference Figure 2 , Figure 4 , Figure 5 , Figure 6 as well as Figure 9 In one embodiment, the cleaning component 100 includes a cleaning roller brush 110 and a mounting housing 120. The cleaning roller brush 110 is rotatably disposed inside the mounting housing 120. When the cleaning device is placed horizontally in the vertical direction of an operating surface, the lower surface of the mounting housing 120 is provided with a first cleaning opening 121 that communicates with the interior of the mounting housing 120. The cleaning roller brush 110 cleans foreign objects on the surface to be cleaned through the first cleaning opening 121. The mounting housing 120 is connected to the air duct structure 200.

[0039] For ease of understanding, the embodiments and implementation methods of this application are described with the cleaning equipment placed horizontally on an operating surface, and the first cleaning opening 121 faces the operating surface, while the vertical direction refers to the direction perpendicular to the horizontal plane in this case.

[0040] In this embodiment, the cleaning roller brush 110 is installed inside the mounting housing 120 and is able to rotate around its own horizontal axis within the mounting housing 120.

[0041] As the cleaning equipment operates, the cleaning roller brush 110 rotates around its own axis inside the mounting housing 120. The cleaning roller brush 110 extends out from the second cleaning opening 310 and contacts the surface to be cleaned. The cleaning roller brush 110 uses the friction with the surface to be cleaned to peel foreign objects off the surface. At the same time, under the continuous suction applied by the air duct structure 200, foreign objects will enter the interior of the mounting housing 120 through the first cleaning opening 121 and will be sucked into the air duct structure 200 along with the airflow.

[0042] Reference Figures 1 to 6 In one embodiment, the cleaning roller brush 110 includes two coaxial roller brush bodies 111 spaced apart along a preset direction. The preset direction is collinear with the axis of the roller brush bodies 111 and intersects with the vertical direction. The two ends of the two roller brush bodies 111 that are far apart from each other are respectively disposed in the mounting shell 120, and the two ends of the two roller brush bodies 111 that are close to each other are suspended.

[0043] In this embodiment, the vertical direction is parallel to the direction of gravity, the preset direction is perpendicular to the vertical direction, and parallel to the length direction of the mounting housing 120; it can be understood that the angle between the preset direction and the vertical direction can also be an acute angle. The two roller brush bodies 111 are rotatably mounted on the inner wall surface of the mounting housing 120 at their far ends, and the two roller brush bodies 111 are spaced apart at their close ends.

[0044] The two roller brush bodies 111 are spaced apart, with their close ends suspended. This helps to guide foreign objects such as hair to the area between the two roller brush bodies 111. On the other hand, when the roller brush bodies 111 rotate, the suspended ends of the roller brush bodies 111 allow foreign objects such as hair to easily fall off the roller brush bodies 111 under the action of centrifugal force and gravity. This not only makes it less likely for foreign objects such as hair to entangle and knot between the two roller brush bodies 111, but also, since there is no fixed support structure to obstruct them, foreign objects such as hair can be more easily separated from the roller brush bodies 111 when subjected to external forces (such as the suction force applied by the air passage structure 200), and thus be sucked away by the air passage structure 200.

[0045] Reference Figures 1 to 6 In one embodiment, the area between the two ends of the two roller brush bodies 111 that are close to each other is the dust collection area 112, and the mounting shell 120 is provided with a communication port 122 that communicates with the air passage structure 200; the dust collection area 112 is located between the communication port 122 and the first cleaning opening 121, and the air passage structure 200 communicates with the first cleaning opening 121 through the dust collection area 112.

[0046] In this embodiment, the dimension of the connecting opening 122 in the preset direction is larger than the dimension of the dust collection area 112 in the preset direction. The dust collection area 112 is located between the airflow structure 200 and the first cleaning opening 121, which not only makes the path of foreign objects from the first cleaning opening 121 to the dust collection area 112 and then into the airflow structure 200 smoother, improving the collection efficiency of foreign objects and reducing the possibility of foreign objects such as hair getting tangled on the roller brush body 111, but also makes the airflow path from the first cleaning opening 121 to the dust collection area 112 and then to the airflow structure 200 a unidirectional airflow path, which can effectively prevent the foreign objects that have been swept up from falling back onto the surface to be cleaned, ensuring thorough cleaning.

[0047] Reference Figures 1 to 6 In one embodiment, the cleaning device further includes a housing 300, and the cleaning component 100 and the air duct structure 200 are all disposed inside the housing 300; the lower surface of the housing 300 is provided with a second cleaning opening 310 communicating with the interior of the housing 300, and the cleaning component 100 cleans foreign objects on the surface to be cleaned through the second cleaning opening 310.

[0048] In this embodiment, the second cleaning opening 310 is connected to the first cleaning opening 121, and the cleaning roller brush 110 cleans foreign objects on the surface to be cleaned by passing through the first cleaning opening 121 and the second cleaning opening 310 in sequence. The outer shell 300 serves to support and protect the cleaning component 100 and the air duct structure 200.

[0049] Reference Figures 4 to 9In one embodiment, the airflow structure 200 includes an air inlet duct 210, a dust collection box 220, and an air outlet duct 230 connected in sequence. The air inlet duct 210 and the air outlet duct 230 are located in front of the dust collection box 220 in the forward direction of the cleaning equipment.

[0050] In this embodiment, the cleaning component 100 is disposed on the side of the air inlet duct 210 away from the dust collection box 220. The internal space of the mounting shell 120 in the cleaning component 100 is connected to the air inlet duct 210. The air inlet duct 210 is a pipe structure for guiding airflow into the dust collection box. The first end of the air inlet duct 210 is fixedly installed on the dust collection box 220 and is connected to the dust collection box 220. The second end of the air inlet duct 210 is fixedly installed on the mounting shell 120 and is connected to the interior of the mounting shell 120. In addition, the air inlet duct 210 is located above the first cleaning opening 121 in the vertical direction. At the same time, the air inlet duct 210 is connected to the connecting port 122 and is connected to the first cleaning opening 121 through the dust collection area 112. The air outlet duct 230 is a pipe structure for guiding airflow to be discharged outward. The first end of the air outlet duct 230 is fixedly installed on the dust collection box 220, and the second end of the air outlet duct 230 is connected to the external environment.

[0051] In this application, both the air inlet duct 210 and the air outlet duct 230 are located on the front side of the dust collection box 220, rather than on opposite sides of the dust collection box 220. This structural design reduces the space required by the airflow structure 200, allowing the cleaning equipment to be smaller in size while maintaining its cleaning function, making it easier to store and use. It also makes the airflow path within the airflow structure 200 smoother and more rational, optimizing the airflow path and thus improving the overall cleaning effect and reducing noise. Furthermore, air enters through the first cleaning opening 121, carrying foreign objects raised by the cleaning roller brush 110 through the dust collection area to the upper air inlet duct 210. This not only helps to form a stable airflow channel, reducing airflow turbulence and eddies, ensuring the stability and efficiency of the cleaning process, but also helps to reduce the possibility of foreign objects falling back onto the surface to be cleaned, thereby improving the thoroughness of the cleaning. In addition, it reduces the possibility of foreign objects getting tangled on the cleaning roller brush 110 and remaining inside the mounting housing 120, thus extending the service life of the cleaning component 100.

[0052] Reference Figures 4 to 9 In one embodiment, the airflow structure 200 further includes a power component 240, which is disposed in the air outlet duct 230. The power component 240 has an air intake end and an air outlet end 241, the air intake end being connected to the air outlet duct 230 and the air outlet end 241 being connected to the external environment.

[0053] In this embodiment, the power component 240 is a fan, which is fixedly installed on the end face of the air outlet duct 230 away from the dust collection box 220; it can be understood that the power component 240 may also be a compressor or a blower.

[0054] As the cleaning equipment operates, the power unit 240 starts first. The high-speed rotation of the power unit 240 generates negative pressure suction at the suction end, rapidly reducing the air pressure inside the air outlet duct 230 and the dust collection box 220, creating a localized vacuum environment inside the dust collection box 220. Simultaneously, the cleaning roller brush 110 rotates around its own axis inside the mounting housing 120. The cleaning roller brush 110 extends from the second cleaning opening 310 and contacts the surface to be cleaned. Using friction with the surface, the cleaning roller brush 110 peels away foreign objects. Under the continuous suction applied by the power unit 240, the foreign objects sequentially enter the mounting housing 120 through the second cleaning opening 310 and the first cleaning opening 121, and are then sucked into the dust collection box 220 along with the airflow.

[0055] The power unit 240 provides strong suction to the airflow structure 200, making it easier for foreign objects cleaned by the cleaning unit 100 to be sucked into the dust collection box 220, effectively improving the cleaning effect and efficiency of the cleaning unit.

[0056] Reference Figures 4 to 11 In one embodiment, the power unit 240 is located vertically below the air outlet duct 230 and above the first cleaning opening 121.

[0057] In this embodiment, the suction end is located vertically above the exhaust end 241. This structural design helps to further reduce the space occupied by the airflow structure 200, thereby reducing the overall size of the cleaning equipment.

[0058] Reference Figures 4 to 11 In one embodiment, the power unit 240 is located in front of the cleaning unit 100 in the forward direction of the cleaning device.

[0059] When the cleaning unit moves forward, the air outlet 241 of the power unit 240 can blow air onto the foreign objects in front in advance, making it easier for the foreign objects to be sucked into the air inlet duct 210, optimizing the airflow path of the entire cleaning equipment, and allowing the air in the external environment to flow more smoothly into the air inlet duct 210, thereby improving the airflow delivery efficiency. Compared with the layout of the cleaning unit 100 in front and the power unit 240 behind, it can more effectively prevent foreign objects from splashing or being missed by the cleaning unit 100, improve the dust collection efficiency, and ensure a more thorough cleaning.

[0060] Reference Figure 11 and Figure 12In one embodiment, the airflow structure 200 further includes a filter element 250, which is disposed in a dust collection box 220 and separates a dust collection section 221 and an air outlet section 222 that are connected to each other in the dust collection box 220; the dust collection section 221 is connected to the air inlet duct 210 and the air outlet section 222 is connected to the air outlet duct 230.

[0061] In this embodiment, the filter element 250 is a filter screen. The filter element 250 divides the internal space of the dust collection box 220 into a dust collection section 221 and an air outlet section 222 by the fact that its peripheral surface is completely in contact with the inner wall surface of the dust collection box 220. The air outlet section 222 is connected to the external environment by communicating with the air outlet duct 230.

[0062] By setting a filter element 250 inside the dust collection box 220 to divide the space, the airflow can form a more orderly flow path inside the dust collection box 220. Specifically, the airflow entering the dust collection section 221 from the air inlet duct 210 enters the air outlet section 222 in a relatively stable state after passing through the filter element 250, and then flows to the air outlet duct 230, effectively avoiding turbulence and eddies in the airflow inside the dust collection box 220.

[0063] At the same time, it can also concentrate foreign objects in the dust collection section 221, reducing the possibility of foreign objects entering the air outlet duct 230, thereby effectively preventing foreign objects from accumulating in the air outlet duct 230 and ensuring that the air outlet duct 230 remains unobstructed.

[0064] Reference Figure 11 and Figure 12 In one embodiment, when the cleaning equipment is placed horizontally on an operating surface, the air outlet 222 is located above the dust collection section 221.

[0065] The aforementioned structural design not only allows foreign objects to naturally settle to the bottom of the dust collection section 221 under their own gravity, reducing the possibility of foreign objects being suspended in the dust collection box 220 and being carried away again by the airflow, effectively improving dust collection efficiency, but also allows the airflow entering the dust collection section 221 from the air inlet duct 210 to rise more smoothly into the air outlet 222 after passing through the filter element 250, and then flow to the air outlet duct 230 for discharge, helping to make the airflow within the dust collection box 220 smoother. Furthermore, when the airflow flows from the dust collection section 221 to the upper air outlet 222, it must pass through the filter element 250; during this process, the gravity of the filter element 250 itself effectively prevents foreign objects from clogging it, ensuring that the filter element 250 always has a good filtration effect.

[0066] Reference Figures 7 to 12In one embodiment, the dust collection box 220 has a first surface 223, the first surface 223 is provided with a dust inlet 2231, and the air inlet duct 210 is connected to the dust collection part 221 through the dust inlet 2231; at least a portion of the structure of the filter element 250 is located above the dust inlet 2231 in the vertical direction.

[0067] In this embodiment, the dust inlet 2231 extends into the dust collection box 220 and communicates with the air inlet duct 210 and the dust collection section 221; part of the filter element 250 is located above the dust inlet 2231 in the vertical direction, and another part of the filter element 250 is located below the upper edge of the dust inlet 2231 in the vertical direction. It can be understood that the entire structure of the filter element 250 can be located above the dust inlet 2231.

[0068] By positioning at least a portion of the filter element 250 above the dust inlet 2231, not only can the smooth flow of air carrying foreign objects through the air inlet duct 210 into the dust collection unit 221 be ensured, but the unused top space inside the dust collection box 220 can also be utilized more efficiently. Without increasing the overall volume of the dust collection box 220, the arrangement of the dust collection unit 221 and the filter element 250 can be more compact and rational, thereby improving the space utilization rate of the dust collection box 220. Furthermore, the fact that at least a portion of the filter element 250 is located above the dust inlet 2231 allows the airflow entering from the dust inlet 2231 to pass through the filter element 250 at a more suitable angle and path, thus maximizing the filtration efficiency of the filter element 250.

[0069] Reference Figures 7 to 12 In one embodiment, the first surface 223 is further provided with an air outlet 2232, which is located above the dust inlet 2231 in the vertical direction, and the air outlet duct 230 is connected to the air outlet section 222 through the air outlet 2232.

[0070] In this embodiment, the air outlet 2232 extends into the interior of the dust collection box 220 and is connected to the air outlet duct 230 and the air outlet section 222.

[0071] On the one hand, the dust inlet 2231 and the air outlet 2232 are both located on the first surface 223, which not only helps the airflow to follow the designed path and makes the airflow within the air duct structure 200 more orderly, thus improving the efficiency of dust collection and air outlet, but also makes the structure of the cleaning equipment more compact. Furthermore, during equipment maintenance, it facilitates the inspection, cleaning, and repair of the dust inlet 2231, the air outlet 2232, and the connected air ducts, reducing the difficulty and cost of maintenance.

[0072] On the other hand, the air outlet 2232 is located above the dust inlet 2231, which can effectively reduce the interference of the air outlet airflow on the airflow near the dust inlet 2231, thereby reducing the possibility that foreign objects that have entered the dust collection section 221 will flow back to the dust inlet 2231 due to the influence of the air outlet airflow, so that foreign objects can be more concentrated in the dust collection section 221 for sedimentation and collection.

[0073] Reference Figure 9 and Figure 12 In one embodiment, the filter element 250 is inclined downward in the horizontal direction, and the end of the filter element 250 away from the air outlet 2232 is higher than the end of the filter element 250 near the air outlet 2232.

[0074] In this embodiment, the filter element 250 is inclined downwards gradually in the horizontal direction in the vertical direction. The inclined filter element 250 can not only be used in conjunction with the air outlet 2232 to guide the filtered air to flow more smoothly to the air outlet 2232, but also reduce the possibility of airflow reversal and eddy currents in the dust collection box 220, improve the efficiency and speed of airflow, and enable the purified air to be discharged quickly, thereby increasing the airflow speed of the air passage structure 200.

[0075] It can also change the flow path and speed distribution of airflow in the dust collection box 220, so that the airflow can pass through the filter element 250 more evenly, avoid uneven filtration caused by local airflow being too fast or too slow, and improve the filtration effect of the filter element 250.

[0076] In addition, because the filter element 250 is set at an angle, foreign objects trapped on the filter element 250 are more likely to slide off the filter element 250, making it less likely for foreign objects to form a blockage on the filter element 250, thus ensuring the smooth flow between the air outlet 222 and the dust collection section 221.

[0077] Reference Figure 10 and Figure 11 In one embodiment, the filter element 250 is inclined downward in the horizontal direction, and the end of the filter element 250 away from the first surface 223 is higher than the end of the filter element 250 near the first surface 223.

[0078] In this embodiment, the filter element 250 is gradually tilted downwards along the horizontal direction in the vertical direction. The double tilting design not only further guides the airflow to flow in a specific direction, allowing the airflow to flow more smoothly along the surface of the filter element 250 after entering the dust collection section 221 from the dust inlet 2231, but also further reduces the possibility of airflow turbulence and eddies in the dust collection box 220, improves the efficiency of airflow through the dust collection box 220, and ensures smoother and more stable airflow.

[0079] At the same time, the shape of the dust collection section 221 is optimized. The higher structural design of the end of the filter element 250 away from the first surface 223 provides a larger dust collection section 221 for foreign objects, which to some extent increases the dust collection capacity of the dust collection box 220 and reduces the frequency of cleaning the dust collection box 220.

[0080] In addition, the double tilt design allows the dust collection box 220 to distribute the force more evenly when subjected to airflow pressure and the weight of foreign objects, dispersing the force to different parts of the dust collection box 220, reducing the situation of excessive local stress, thereby enhancing the overall structural stability of the dust collection box 220 and reducing the risk of deformation and damage caused by long-term uneven stress.

[0081] Reference Figure 11 and Figure 12 In one embodiment, a portion of the structure of the filter element 250 is located vertically above the dust inlet 2231.

[0082] If the entire structure of the filter element 250 is located vertically above the dust inlet 2231, the airflow is likely to directly impact the filter element 250. This will not only cause some foreign objects to be carried into the air outlet 222 and the air outlet duct 230 before they can settle and be filtered, but will also cause the collected dust to be re-entrained. With the structural design in this application, the dust collection part 221 below the filter element 250 can first buffer and agitate part of the airflow entering from the dust inlet 2231, allowing foreign objects to have more opportunities to separate under the action of gravity and airflow, and then be filtered by the filter element 250, thereby improving the filtration efficiency.

[0083] Reference Figure 8 , Figure 9 as well as Figure 12 In one embodiment, the air outlet duct 230 has an air outlet opening 231, through which the air outlet duct 230 is connected to the external environment, and the ventilation area of ​​the air outlet 2232 is larger than the ventilation area of ​​the air outlet opening 231.

[0084] In this embodiment, the air outlet duct 230 is connected to the air intake end of the power component 240 through the air outlet opening 231; the ventilation area of ​​the air outlet 2232 refers to the effective opening area of ​​the air outlet 2232, and the ventilation area of ​​the air outlet opening 231 refers to the effective opening area of ​​the air outlet opening 231.

[0085] The larger ventilation area of ​​the air outlet 2232 provides a buffer space for the airflow, making the airflow speed change more gradually as it flows from the air outlet 222 to the air outlet duct 230, reducing the noise generated by airflow impact and vibration.

[0086] Reference Figure 9 as well as Figure 12In one embodiment, the dust collection box 220 has a second surface 224 and an air guide inner wall surface 225 disposed opposite to each other. The second surface 224 is located outside the dust collection box 220, and the air guide inner wall surface 225 is located inside the dust collection box 220. The second surface 224 is disposed adjacent to the first surface 223, and the second surface 224 is located above the first surface 223 in the vertical direction. The ventilation area between the air guide inner wall surface 225 and the filter element 250 increases from the dust inlet 2231 to the air outlet 2232.

[0087] In this embodiment, the second surface 224 is the outer surface of the dust collection box 220, and the inner wall surface 225 is the inner wall surface of the dust collection box 220. The ventilation area between the inner wall surface 225 and the filter element 250 refers to the effective cross-sectional area between the inner wall surface 225 and the filter element 250 that allows air to pass through. In the vertical direction, the effective cross-section is coplanar with the vertical surface. At the same time, the ventilation area between the inner wall surface 225 and the filter element 250 gradually increases from the dust inlet 2231 to the air outlet 2232.

[0088] According to the principle of fluid continuity, when airflow passes through a channel with a gradually increasing ventilation area, not only will the airflow resistance decrease, allowing the airflow to flow smoothly from the air outlet 222 to the air outlet duct 230, but the airflow speed will also gradually decrease. This allows the airflow in the air outlet 222 to gradually slow down as it flows towards the air outlet duct 230, preventing high-speed airflow from directly impacting the power component 240. This ensures that the airflow flows more smoothly and orderly towards the power component 240, guaranteeing the normal operation of the power component 240 and reducing noise.

[0089] Reference Figure 9 and Figure 12 In one embodiment, the air outlet 222 includes a first region 2221 and a second region 2222 that are connected to each other. The first region 2221 is connected to the dust collection section 221 and is surrounded by the inner wall of the dust collection box 220 and the filter element 250. The second region 2222 is connected to the air outlet duct 230 through the air outlet 2232 and is surrounded by the inner wall of the dust collection box 220. The ventilation area at the connection between the first region 2221 and the second region 2222 is larger than the ventilation area of ​​the air outlet 231.

[0090] In this embodiment, the first region 2221 is formed by a portion of the inner wall surface of the dust collection box 220 and the surface of the filter element 250 away from the dust collection part 221; the second region 2222 is formed by a portion of the inner wall surface of the dust collection box 220.

[0091] According to the principles of fluid mechanics, airflow resistance is low where the ventilation area is large. The ventilation area at the connection between the first region 2221 and the second region 2222 is larger than the ventilation area of ​​the air outlet 231, which can reduce the airflow resistance at that location, making it easier for the airflow to pass through, reducing problems such as poor airflow and backflow caused by excessive resistance, and improving the overall airflow efficiency.

[0092] In summary, implementing the airflow structure and cleaning equipment provided in this embodiment has at least the following beneficial technical effects: In this application, both the inlet air duct 210 and the outlet air duct 230 are located on the front side of the dust collection box 220, rather than on opposite sides of the dust collection box 220. This structural design reduces the space required by the airflow structure 200, allowing the overall size of the cleaning equipment to be reduced while maintaining its cleaning function, thus making it easier to store and use. On the other hand, it also makes the airflow path within the airflow structure 200 smoother and more reasonable, optimizing the airflow path, thereby improving the overall cleaning effect and reducing noise. In addition, air enters from the first cleaning opening 121, carrying the foreign objects raised by the cleaning roller brush 110 through the dust collection area to the upper inlet air duct 210. This not only helps to form a stable airflow channel, thereby reducing airflow turbulence and eddies, ensuring the stability and efficiency of the cleaning process, but also helps to reduce the possibility of foreign objects falling back onto the surface to be cleaned, thereby improving the thoroughness of cleaning. In addition, it reduces the possibility of foreign objects getting tangled on the cleaning roller brush 110 and remaining inside the mounting housing 120, thus extending the service life of the cleaning component 100.

[0093] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wind tunnel structure, characterized in that, For cleaning equipment, the air duct structure includes an air inlet duct, a dust collection box, and an air outlet duct connected in sequence. In the forward direction of the cleaning equipment, the air inlet duct and the air outlet duct are located in front of the dust collection box.

2. The airflow structure according to claim 1, characterized in that, The airflow structure also includes a filter element disposed within the dust collection box, which separates a dust collection section and an air outlet section that are interconnected. The dust collection section is connected to the air inlet duct, and the air outlet section is connected to the air outlet duct.

3. The airflow structure according to claim 2, characterized in that, When the cleaning equipment is placed horizontally on an operating surface, the air outlet is located above the dust collection section in the vertical direction.

4. The airflow structure according to claim 3, characterized in that, The dust collection box has a first surface with a dust inlet, and the air inlet duct communicates with the dust collection unit through the dust inlet. At least a portion of the structure of the filter element is located vertically above the dust inlet.

5. The airflow structure according to claim 4, characterized in that, The first surface is also provided with an air outlet, which is located above the dust inlet in the vertical direction, and the air outlet duct is connected to the air outlet section through the air outlet.

6. The airflow structure according to claim 5, characterized in that, The filter element is inclined downward in the horizontal direction, and the end of the filter element away from the air outlet is higher than the end of the filter element near the air outlet.

7. The airflow structure according to claim 6, characterized in that, The filter element is inclined downward in the horizontal direction, and the end of the filter element away from the first surface is higher than the end of the filter element close to the first surface.

8. The air duct structure according to claim 7, characterized in that, Part of the filter element is located vertically above the dust inlet.

9. The air duct structure according to claim 5, characterized in that, The air outlet duct has an air outlet opening, and the air outlet duct is connected to the external environment through the air outlet opening. The ventilation area of ​​the air outlet opening is larger than the ventilation area of ​​the air outlet opening.

10. The airflow structure according to claim 9, characterized in that, The dust collection box has a second surface and an air guide inner wall surface that are disposed opposite to each other, the second surface being located outside the dust collection box and the air guide inner wall surface being located inside the dust collection box; The second surface is disposed adjacent to the first surface, and the second surface is located above the first surface in the vertical direction; The ventilation area between the inner wall of the air guide and the filter increases from the dust inlet to the air outlet.

11. The airflow structure according to claim 10, characterized in that, The air outlet includes a first area and a second area that are connected to each other. The first area is connected to the dust collection section and is surrounded by the inner wall of the dust collection box and the filter element. The second area is connected to the air outlet and the air outlet duct through the air outlet, and the second area is enclosed by the inner wall of the dust collection box; The ventilation area at the junction of the first region and the second region is greater than the ventilation area of ​​the air outlet.

12. The airflow structure according to any one of claims 1 to 11, characterized in that, The airflow structure includes a power component, which is disposed in the air outlet duct. The power component has an air intake end and an air outlet end. The air intake end is connected to the air outlet duct, and the air outlet end is connected to the external environment.

13. A cleaning device, characterized in that, The invention includes a cleaning component and an airflow structure as described in any one of claims 1 to 12, wherein the cleaning component is disposed on the side of the air inlet duct away from the dust collection box and is connected to the air inlet duct.

14. The cleaning equipment according to claim 13, characterized in that, The cleaning component includes a cleaning roller brush and a mounting housing, wherein the cleaning roller brush is rotatably disposed within the mounting housing. When the cleaning device is placed horizontally on an operating surface, the lower surface of the mounting housing is provided with a first cleaning opening that communicates with the interior of the mounting housing. The cleaning roller brush cleans foreign objects from the surface to be cleaned through the first cleaning opening. The air inlet duct is located above the first cleaning opening and communicates with the mounting housing.

15. The cleaning equipment according to claim 14, characterized in that, The air duct structure also includes a power component, which is disposed in the air outlet duct. The power component has an air intake end and an air outlet end, the air intake end is connected to the air outlet duct, and the air outlet end is connected to the external environment; The power component is located vertically below the air outlet duct and above the first cleaning opening; And / or, In the forward direction of the cleaning equipment, the power unit is located in front of the cleaning unit.

16. The cleaning equipment according to claim 14, characterized in that, The cleaning roller brush includes two coaxial roller brush bodies spaced apart along a preset direction. The preset direction is collinear with the axis of the roller brush body and intersects with the vertical direction. The two ends of the two roller brush bodies that are far apart from each other are respectively disposed on the mounting shell, and the two ends of the two roller brush bodies that are close to each other are suspended in the air.

17. The cleaning equipment according to claim 16, characterized in that, The area between the two ends of the two roller brush bodies that are close to each other is the dust collection area, and the mounting shell is provided with a communication port that communicates with the air inlet duct. The dust collection area is located between the connecting port and the first cleaning opening, and the air inlet duct is connected to the first cleaning opening through the dust collection area.

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