Cleaning equipment and cleaning system

Abstract

The utility model is suitable for the technical field of cleaning equipment, and provides cleaning equipment and a cleaning system.The cleaning equipment comprises a cleaning part, a dust box, a draught fan assembly and a filtering assembly, the cleaning part is used for making contact with a to-be-cleaned face, and the dust box is provided with a containing cavity; the fan assembly is in airflow communication with the containing cavity of the dust box, and the fan assembly is configured in the mode that wind power generated by forward rotation is larger than wind power generated by reverse rotation; the filter assembly is arranged between the accommodating cavity and the fan assembly; when the fan assembly rotates in the forward direction, airflow flowing through the cleaning part flows to the fan assembly from the containing cavity through the filtering assembly, and when the fan assembly rotates in the reverse direction, the airflow flows to the containing cavity from the fan assembly through the filtering assembly. According to the cleaning equipment, the problem that the cleaning capacity is reduced due to blockage of the filtering assembly can be solved.

Description

Technical Field

[0001] This application belongs to the field of cleaning equipment, and more specifically, relates to a cleaning device and a cleaning system. Background Technology

[0002] Many existing cleaning devices have filter components, such as screens, located at the air outlet within their dustbins. These filters are designed to trap dust particles, keeping them within the dustbin. However, during operation, fine dust particles and lint can become trapped in the folds of the screen, causing blockages and reducing the cleaning efficiency of the device. Utility Model Content

[0003] This application aims to solve the technical problem of reduced cleaning capacity of cleaning equipment due to clogging of filter components.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In a first aspect, a cleaning device is provided, comprising a cleaning component, a dust box, a fan assembly, and a filter assembly. The cleaning component is used to contact a surface to be cleaned. The dust box has a receiving cavity that is in airflow communication with the cleaning component. The fan assembly is in airflow communication with the receiving cavity of the dust box. The fan assembly is configured such that the airflow generated by forward rotation is greater than the airflow generated by reverse rotation. The filter assembly is disposed between the receiving cavity and the fan assembly.

[0006] When the fan assembly rotates in the forward direction, the airflow passing through the cleaning component flows from the receiving cavity through the filter assembly to the fan assembly. When the fan assembly rotates in the reverse direction, the airflow flows from the fan assembly through the filter assembly to the receiving cavity.

[0007] In one feasible implementation, the fan assembly includes an impeller configured such that a first equivalent area is greater than a second equivalent area, the first equivalent area being the equivalent area of ​​compressed air by the blades when rotating in the forward direction, and the second equivalent area being the equivalent area of ​​compressed air by the blades when rotating in the reverse direction.

[0008] In one feasible implementation, the impeller includes:

[0009] Connecting part;

[0010] Multiple blades are arranged at intervals around the outer peripheral sidewall of the connecting part. One end of each blade is connected to the outer surface of the connecting part to form a first end, and the other end extends in a direction away from the connecting part to form a second end. Relative to the axial direction of the impeller, the first end of the blade is inclined towards the side closer to the dust box along the front side of the positive rotation direction of the impeller.

[0011] In a plane perpendicular to the impeller axis, the dimension of the first end is smaller than the dimension of the second end.

[0012] In one feasible implementation, the fan assembly includes an impeller, the impeller including a connecting portion and a plurality of blades, the blades being arranged at intervals around the outer peripheral sidewall of the connecting portion and being movably connected to the connecting portion, and the tilt angle of the blades relative to the axial direction of the impeller being adjustable.

[0013] In one feasible implementation, the impeller further includes an adjustment drive, and the end of the blade near the connecting portion is a first end, which is connected to the connecting portion through the adjustment drive.

[0014] The adjustment drive is configured to drive the blade to rotate in order to change the tilt angle of the blade relative to the impeller circumferential direction.

[0015] In one feasible implementation, the fan assembly further includes an air guide shroud and a motor, the motor being installed inside the air guide shroud, and the impeller being connected to the output end of the motor and installed at one axial end of the air guide shroud; when the fan assembly rotates in the forward direction, the airflow flows through the impeller to the motor, and when the fan assembly rotates in the reverse direction, the airflow flows through the motor to the impeller.

[0016] In one feasible implementation, the air guide shroud is provided with guide vanes, and the rotation direction of the guide vanes is opposite to that of the blades.

[0017] In one possible implementation, the fan assembly further includes a controller connected to the motor and located at the end of the motor facing away from the impeller.

[0018] In one feasible implementation, the fan assembly includes a controller, a motor, and an impeller, the controller being connected to the motor, the motor being connected to the impeller, and the motor driving the impeller to rotate in response to a drive current output by the controller;

[0019] The controller is configured such that the output drive current for driving the impeller to rotate in the forward direction is greater than the drive current for driving the impeller to rotate in the reverse direction.

[0020] In one feasible implementation, the fan assembly further includes an air guide shroud, the motor is installed inside the air guide shroud, the impeller is connected to the output shaft of the motor and installed at one axial end of the air guide shroud, and the controller is located at the end of the motor opposite to the impeller.

[0021] In one feasible implementation, a counterweight is installed at the end of the fan assembly away from the impeller;

[0022] And / or, along the axial direction of the fan assembly, a portion of the impeller surface is recessed to form a weight-reducing balancing groove.

[0023] In one feasible implementation, the dust box has a first air vent and a second air vent, both of which are connected to the receiving cavity. The cleaning component is disposed adjacent to the first air vent, the filter assembly is installed at the second air vent, and the fan assembly is connected to the receiving cavity through the second air vent.

[0024] When the fan assembly rotates in the forward direction, the airflow flows from the first air outlet through the receiving cavity to the second air outlet; when the fan assembly rotates in the reverse direction, the airflow flows from the second air outlet through the filter assembly to the receiving cavity.

[0025] In one feasible implementation, the cleaning device further includes a first flap, which is located within the receiving cavity and connected to the dust box. The first flap is located at the first air vent, and the first flap is configured such that when the fan assembly rotates in the forward direction, the first flap rotates and exposes the first air vent; and when the fan assembly rotates in the reverse direction, the first flap covers and closes the first air vent.

[0026] And / or, the dust box is further provided with a third air vent communicating with the receiving cavity, and the cleaning device further includes a second flap, which is located outside the third air vent. The second flap is configured to cover and close the third air vent when the fan assembly rotates in the forward direction.

[0027] In a second aspect, a cleaning system is provided, including cleaning equipment and a cleaning base station, wherein the cleaning equipment is the cleaning equipment described in any of the preceding claims.

[0028] Compared with the prior art, this application includes at least the following beneficial effects:

[0029] The cleaning equipment provided in this application embodiment has a fan assembly that is in airflow communication with the receiving cavity of the dust box. By adjusting the rotation direction of the fan assembly, the fan assembly can achieve the dust collection function when rotating in the forward direction, and can act on the filter assembly when rotating in the reverse direction, so that the airflow can blow the dust and other particles attached to the filter assembly into the receiving cavity, thereby achieving the cleaning treatment of the filter assembly and helping to reduce the frequency of manual cleaning of the filter assembly. On the other hand, the fan assembly that can rotate in the reverse direction also helps to improve the problem of reduced cleaning ability of the cleaning equipment due to filter assembly blockage.

[0030] The cleaning system provided in this application includes the cleaning equipment described above. Therefore, the beneficial effects of the cleaning system including any one or more of the cleaning equipment described above will not be repeated here. Attached Figure Description

[0031] 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.

[0032] Figure 1 This is a partial structural schematic diagram of the cleaning equipment provided in the embodiments of this application;

[0033] Figure 2 An exploded view of the cleaning equipment provided in the embodiments of this application;

[0034] Figure 3 A cross-sectional structural diagram of the cleaning equipment provided in the embodiments of this application in its first working state;

[0035] Figure 4 A cross-sectional structural diagram of the cleaning equipment provided in the embodiments of this application in a second working state;

[0036] Figure 5 This is a schematic diagram of the internal structure of the dust box in the cleaning equipment provided in the embodiments of this application;

[0037] Figure 6 A schematic diagram of the fan assembly in the cleaning equipment provided in this application embodiment;

[0038] Figure 7 for Figure 6 Axial sectional view;

[0039] Figure 8 for Figure 6 A schematic diagram of the impeller structure in the diagram;

[0040] Figure 9 for Figure 6 A schematic diagram of the structure of the air guide shroud.

[0041] The following are the labeling elements in the figure:

[0042] 10. Cleaning equipment; 1. Dust box; 101. Receiving cavity; 11. First air outlet; 12. Second air outlet; 13. Third air outlet; 2. Fan assembly; 21. Impeller; 211. Connecting part; 2111. Weight reduction and balancing groove; 212. Blade; 2121. First end; 2122. Second end; 2123. Leading edge; 2124. Trailing edge; 22. Air guide shroud; 221. Guide vane; 222. Inner casing; 223. Outer casing; 2201. Flow channel; 23. Motor; 231. Output shaft; 232. Stator; 233. Rotor; 24. Controller; 3. Filter screen; 4. Balance block; 5. First flap; 6. Second flap. Detailed Implementation

[0043] 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.

[0044] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0045] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application.

[0046] 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.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] This application provides a cleaning device 10 and a cleaning system, wherein the cleaning device 10 can be applied to a cleaning system with a cleaning base station.

[0051] The cleaning device 10 can be a floor cleaning device with floor cleaning functions, such as a robotic vacuum cleaner, a robotic mop, or a handheld vacuum cleaner. The cleaning base station can be a base station-type structure that works in conjunction with the cleaning device 10 and has functions such as charging and dust collection. It is understood that the cleaning device 10 can be a device that automatically performs cleaning operations in a specific area to be cleaned. When the cleaning device 10 starts working, it can depart from the cleaning base station and execute the corresponding cleaning task; when the cleaning device 10 completes the cleaning task or in other situations requiring the cleaning task to be terminated, it can return to the cleaning base station to perform at least one or more of the following tasks: charging, water replenishment, washing, and dust collection.

[0052] In related technologies, the cleaning device 10 has a good floor dust collection and cleaning function. This function can be achieved through a dust box 1, a fan, and cleaning components. The cleaning components are used to contact the surface to be cleaned and include at least one of a roller brush and a side brush. When cleaning the floor, the cleaning components are activated and collect dust, hair, and small particulate impurities located on the floor below the cleaning device 10. When the fan is activated, the debris located below the cleaning device 10 can be sucked into the cleaning device 10. The airflow passing through the cleaning components flows in from the air inlet at the bottom of the cleaning device 10 and finally enters the dust box 1 through the air duct. In this process, the airflow flows from the bottom of the cleaning device 10 to the interior of the cleaning device 10 and collects the debris through the dust box 1, thereby achieving efficient dust collection and cleaning of the floor.

[0053] Figure 1 This is a partial structural schematic diagram of the cleaning device 10 provided in an embodiment of this application. Figure 2 An exploded view of the cleaning equipment 10 provided in the embodiments of this application. Figure 3 This is a cross-sectional structural diagram of the cleaning device 10 provided in the embodiments of this application in its first working state. Figure 4 This is a cross-sectional structural diagram of the cleaning device 10 provided in the embodiments of this application in its second working state. Figure 5 This is a schematic diagram of the internal structure of the dust box 1 in the cleaning device 10 provided in the embodiments of this application.

[0054] Please see Figure 1 and Figure 2 The cleaning device 10 includes a main body, a dust box 1, a fan assembly 2, and a filter assembly located inside the device. One end of the air duct formed inside the main body is connected to the air inlet in the middle of the lower surface of the cleaning device 10, and the other end is connected to the receiving cavity 101 of the dust box 1. The fan assembly 2 is in airflow communication with the receiving cavity 101 of the dust box 1, and the filter assembly is located between the receiving cavity 101 and the fan assembly 2.

[0055] Since the fan assembly 2 can rotate in both forward and reverse directions as needed, and when the fan assembly 2 rotates in the forward direction, the airflow passing through the cleaning component can flow from the receiving cavity 101 through the filter assembly to the fan assembly 2, please refer to... Figure 3 (Fan assembly 2 is located on the left side of dust box 1 and is not shown in the figure); when rotating in the reverse direction, the airflow can flow from fan assembly 2 through the filter assembly to the receiving cavity 101. Please refer to [reference needed]. Figure 4 (Fan assembly 2 is located to the left of dust box 1 and is not shown in the figure).

[0056] When the fan assembly 2 rotates in the forward direction, the garbage on the ground flows into the receiving cavity 101 through the air inlet and duct and is stored there. The filter assembly located between the fan assembly 2 and the receiving cavity 101 filters the airflow towards the fan assembly 2 to intercept garbage and ensure that the garbage remains in the receiving cavity 101 of the dust box 1. When the fan assembly 2 rotates in the reverse direction, the airflow acting on the filter assembly blows the dust, small particles and other impurities attached to the filter assembly into the receiving cavity 101 of the dust box 1, thereby cleaning the filter assembly to a certain extent. For users, the reverse rotation of the fan assembly 2 enables automatic cleaning of the filter assembly, thereby reducing the frequency of manual cleaning and extending the service life of the filter assembly to some extent. In addition, the airflow generated by the reverse rotation of the fan assembly 2 can also be blown into the receiving cavity 101 through the filter assembly, thereby agitating the clumps of garbage gathered in the receiving cavity 101. This loosens the garbage that has accumulated and compacted in the receiving cavity 101, reducing the difficulty of cleaning the dust box 1 and removing the garbage in the dust box 1, and reducing the possibility of garbage remaining in the receiving cavity 101 of the dust box 1.

[0057] Specifically, the aforementioned filter component can be filter screen 3. Filter screen 3 can be used to filter dust and fine particles in the airflow, preventing them from re-entering the air and causing secondary pollution.

[0058] Generally, the filter 3 includes a frame and a multi-layered filtration structure installed in the middle of the frame, including high-efficiency particulate air (HEPA) filter material, activated carbon, etc. The aforementioned filtration structure has a pleated design, which can increase the contact area between the filter 3 and the airflow within a limited space, thereby improving its filtration efficiency. In this embodiment, when the fan assembly 2 rotates in the reverse direction, it can drive the airflow to blow dust and small particles adhering to the aforementioned pleated structure away from the filter 3 and fall into the receiving cavity 101 of the dust box 1. During this process, the air permeability and filtration performance of the filter 3 can be improved to a certain extent, helping to extend the service life of the filter 3 and reducing the problems of decreased suction and cleaning ability of the cleaning equipment 10 caused by filter 3 clogging.

[0059] It should be noted that the wind force generated when the fan assembly 2 rotates in the forward direction is greater than that when it rotates in the reverse direction. This ensures that the fan assembly 2 can generate sufficient wind force when performing dust collection operations, and when performing backflushing operations to clean the filter assembly, it can reduce operating noise while protecting the filter screen 3 and preventing the filter screen 3 from being damaged by excessive wind force. At the same time, it can also prevent the debris located in the receiving cavity 101 from being blown out of the dust box 1 due to excessive wind force.

[0060] It is understood that the cleaning device 10 provided in this application embodiment can control the fan assembly 2 to rotate in the opposite direction to form a reverse airflow that can clean the filter assembly, thereby overcoming the problem of reduced cleaning ability caused by filter assembly blockage.

[0061] Please see Figure 3 and Figure 4 The dust box 1 is provided with a first air vent 11 and a second air vent 12, both of which are connected to the receiving cavity 101. A filter assembly is installed at the second air vent 12, and the fan assembly 2 can communicate with the receiving cavity 101 through the second air vent 12. When the fan assembly 2 rotates in the forward direction, the airflow flows from the first air vent 11 through the receiving cavity 101 to the second air vent 12. During this process, the debris carried in the airflow can be intercepted by the filter assembly and stored in the receiving cavity 101, and the airflow passes through the filter assembly to the fan assembly 2. When the fan assembly 2 rotates in the reverse direction, the airflow flows from the fan assembly 2 to the receiving cavity 101. During this process, the airflow directly acts on the filter assembly, and the dust and fine particles attached to the filter assembly can be detached from the filter assembly and fall into the receiving cavity 101 under the blowing of the airflow. At the same time, the debris in the receiving cavity 101 can be loosened to a certain extent under the blowing of the airflow.

[0062] Specifically, the first air vent 11 and the second air vent 12 are formed on two opposing walls of the dust box 1. When the fan assembly 2 rotates in the forward direction, the airflow generated can flow from the first air vent 11 to the second air vent 12, so as to smoothly carry the garbage into the receiving cavity 101 of the dust box 1. The filter assembly installed on the second air vent 12 can filter the airflow. The opposing arrangement of the first air vent 11 and the second air vent 12 helps to achieve efficient garbage collection, and at the same time, it can form a better airflow path (straight flow path) in the receiving cavity 101, reduce airflow turbulence and eddy phenomena, improve garbage collection efficiency and filtration efficiency, and also improve the utilization rate of the space inside the dust box 1.

[0063] In the embodiments of this application, please refer to Figure 3 , Figure 4 and Figure 5The first air vent 11 and the second air vent 12 are located on two opposite side walls of the dust box 1, with the first air vent 11 being adjacent to a cleaning component, which may be a roller brush or the like, but is not shown in the figure.

[0064] In other similar embodiments, the second air outlet 12 can also be set on the top wall of the dust box 1. In this case, the filter assembly is also arranged on the top wall of the dust box 1, thereby reducing the possibility of particulate impurities clogging the filter assembly to a certain extent, and also reducing the success rate of the fan assembly 2 rotating in reverse and blowing impurities off the filter assembly to a certain extent.

[0065] In order to prevent the garbage that has entered the dust box 1 from being discharged again through the first air vent 11 and affecting the cleaning effect of the cleaning device 10, in some embodiments, the cleaning device 10 also includes a first flap 5.

[0066] The first flap 5 is located inside the receiving cavity 101 and is connected to the dust box 1. The first flap 5 is configured such that when the fan assembly 2 rotates in the forward direction, the first flap 5 rotates and exposes the first air outlet 11; when the fan assembly 2 rotates in the reverse direction, the first flap 5 covers and closes the first air outlet 11.

[0067] Specifically, the first flap 5 is installed at the first air vent 11 and located on the side of the first air vent 11 close to the receiving cavity 101. When the fan assembly 2 rotates in the forward direction, the airflow pushes the first flap 5 to swing toward the middle of the receiving cavity 101. At this time, the first air vent 11 is exposed, and the garbage enters the receiving cavity 101 through the first air vent 11. After the fan assembly 2 stops working, the first flap 5 can return to its initial state and close the first air vent 11.

[0068] Of course, when the fan assembly 2 rotates in the opposite direction, the first flap 5 can abut against the inner wall of the dust box 1 on the side with the first air vent 11 under the push of the reverse airflow, so as to cover and seal the first seal.

[0069] Specifically, the first flap 5 is rotatably installed inside the dust box 1, and a first torsion spring is provided at the connection between the two. The first torsion spring is used to ensure that when the fan assembly 2 is not started or is rotating in the reverse direction, the first flap 5 can adhere to the inner wall of the dust box 1 and close the first air vent 11 to prevent the garbage in the dust box 1 from being exposed through the first air vent 11; when the fan assembly 2 rotates in the forward direction, the thrust generated by the airflow is sufficient to overcome the elastic force of the first torsion spring, thereby ensuring that the first flap 5 can be pushed open by the airflow to expose the first air vent 11 when the fan assembly 2 rotates in the forward direction.

[0070] In some embodiments, the cleaning device 10 can cooperate with a cleaning base station and has an automatic dust collection function. The automatic dust collection function refers to the process whereby, after the cleaning device 10 completes its cleaning task and returns to the cleaning base station, it transfers the debris in the dustbin 1 to a dust collection bag or bin within the cleaning base station. The automatic dust collection function typically requires the activation of a fan structure within the cleaning base station to generate suction that acts on the receiving cavity 101 of the dustbin 1, thereby drawing the debris from the receiving cavity 101 into the dust collection bag or bin of the cleaning base station. The automatic dust collection function reduces the hassle of manually cleaning the dustbin 1, especially for users who do not have time to frequently clean their sweepers, greatly improving convenience and comfort. Furthermore, the automatic dust collection function prevents debris from accumulating inside the cleaning device 10, avoiding any impact on its cleaning performance due to excessive debris.

[0071] Considering that the cleaning equipment 10 can be combined with the cleaning base station to realize the automatic dust collection function, the structure of the dust box 1 will be further described below.

[0072] Please see Figure 3 , Figure 4 and Figure 5 The dust box 1 is also provided with a third air vent 13 that communicates with the receiving cavity 101. The cleaning equipment 10 also includes a second flap 6, which is installed outside the dust box 1 and located on the side of the third air vent 13 facing away from the receiving cavity 101.

[0073] Specifically, the second flap 6 is rotatably mounted on the outer wall of the dust box 1 and cooperates with the third air vent 13. The second flap 6 is configured to cover and close the third air vent 13 when the fan assembly 2 rotates in the forward direction.

[0074] When the fan assembly 2 rotates in the forward direction, the airflow flows from the first air inlet 11 through the receiving cavity 101 to the second air inlet 12. At this time, the second flap 6 can adhere to the outer wall of the dust box 1 under the action of the airflow and seal the third air inlet 13.

[0075] Specifically, a second torsion spring is installed at the connection between the second flap 6 and the dust box 1. The second torsion spring ensures that when the fan assembly 2 rotates in the reverse direction, the second flap 6 can adhere to the outer wall of the dust box 1 and close the third air vent 13, thereby preventing the garbage in the receiving cavity 101 from being discharged through the third air vent 13 in the non-automatic dust collection state. Of course, when the cleaning equipment 10 is docked at the cleaning base station and in the automatic dust collection state, the airflow generated by the fan at the cleaning base station is sufficient to overcome the elastic force of the second torsion spring and expose the third air vent 13. The garbage in the receiving cavity 101 can be discharged into the corresponding channel through the third air vent 13 and achieve automatic dust collection.

[0076] The structure required to achieve the automatic dust collection function has been disclosed in related technologies and will not be described in detail here.

[0077] For details, please refer to Figure 5 The third air vent 13 is located on a side wall that connects the first air vent 11 and the second seal.

[0078] It should be noted that the distance between the first air vent 11 and the second air vent 12 is less than the distance between the first air vent 11 and the third air vent 13. This further ensures that when the fan assembly 2 rotates in the forward direction, the airflow generated will not directly act on the second flap 6 and push the second flap 6 open, thereby preventing the garbage flowing into the receiving cavity 101 from being blown out through the third air vent 13.

[0079] In this embodiment, to ensure that the airflow direction generated by the fan assembly 2 is exactly opposite when it rotates in the forward and reverse directions, the fan assembly 2 is configured as an axial flow fan. Please refer to [link to relevant documentation]. Figures 6-9 .

[0080] Figure 6 A schematic diagram of the fan assembly 2 in the cleaning equipment 10 provided in this application embodiment. Figure 7 for Figure 6 Axial sectional view, Figure 8 for Figure 6 A schematic diagram of the impeller 21 in the middle. Figure 9 for Figure 6 A schematic diagram of the structure of the air guide shroud 22.

[0081] In some feasible implementations, the fan assembly 2 includes an impeller 21, which is configured such that a first equivalent area is greater than a second equivalent area, the first equivalent area being the equivalent area of ​​the blades 212 compressing air when rotating in the forward direction, and the second equivalent area being the equivalent area of ​​the blades 212 compressing air when rotating in the reverse direction.

[0082] It should be noted that the forward and reverse rotation of the aforementioned fan assembly 2 are not limited to specific directions, but are only used to indicate that the impeller 21 inside the fan assembly 2 has two different rotation directions. For example, when the forward rotation of the fan assembly 2 is defined as the internal impeller 21 rotating counterclockwise, then the reverse rotation of the fan assembly 2 is defined as the internal impeller 21 rotating clockwise. Correspondingly, when the forward rotation of the fan assembly 2 is defined as the internal impeller 21 rotating clockwise, then the reverse rotation of the fan assembly 2 is defined as the internal impeller 21 rotating counterclockwise.

[0083] The operating state of the impeller 21 directly affects the intensity and direction of the airflow generated by the fan assembly 2. The impeller 21 consists of multiple blades 212. The different structures of the blades 212 allow the impeller 21 to have different equivalent air compression areas in different rotation directions.

[0084] When the fan assembly 2 rotates in the forward direction, the impeller 21 also rotates in the forward direction. The area of ​​air compressed by the blades 212 during the forward rotation can be equivalent to a specific area, namely the first equivalent area. Correspondingly, the area of ​​air compressed by the blades 212 during the reverse rotation can be equivalent to another specific area, namely the second equivalent area.

[0085] A larger equivalent area means that the blades 212 can drive more airflow per unit time. According to fluid dynamics principles, more airflow generates a greater pressure difference, thus creating a stronger suction. Since the wind force generated by the fan assembly 2 when rotating forward is greater than that when rotating backward, this means that the first equivalent area should be larger than the second equivalent area. Therefore, the airflow generated when the fan assembly 2 rotates forward is greater than that when it rotates backward, thus ensuring that the fan assembly 2 has a better cleaning effect when rotating forward; at the same time, when the fan assembly 2 rotates backward, it avoids damage to the dust box 1 and filter components due to excessive wind force, and also helps to prevent secondary pollution.

[0086] Compared with other technical solutions, this embodiment can improve the applicability of the fan assembly 2 to different working conditions by adjusting the structure of the impeller 21 to make the air compression effect of the impeller 21 different under different rotation directions.

[0087] In this embodiment, the impeller 21 includes a connecting portion 211 and a plurality of blades 212 mounted on the connecting portion 211.

[0088] Please see Figure 6 , Figure 7 and Figure 8 The impeller 21 has multiple blades 212, which are inclined blades 212 and are arranged in a ring at intervals on the circumferential sidewall of the connecting part 211.

[0089] Specifically, multiple blades 212 are arranged at intervals around the outer peripheral sidewall of the connecting portion 211. One end of each blade 212 is connected to the outer surface of the connecting portion 211 to form a first end 2121, and the other end extends away from the center of the connecting portion 211 to form a second end 2122. Each blade 212 also has a leading edge 2123 and a trailing edge 2124. The leading edge 2123 is located on the side of the impeller 21 facing away from the other components of the fan assembly 2 and connects the first end 2121 and the second end 2122. The trailing edge 2124 is arranged opposite to the leading edge 2123 and also connects the first end 2121 and the second end 2122. The first end 2121, leading edge 2123, second end 2122, and trailing edge 2124 are connected sequentially to form the four edges of the blade 212.

[0090] Please see Figure 7 and Figure 8Relative to the axial direction of the impeller 21, i.e. the axial direction of the connecting part 211, the front part of the first end 2121 of the blade 212, which points in the positive rotation direction of the impeller 21, is inclined toward the side closer to the dust box 1; it can also be understood that the first end 2121 of the blade 212 is inclined relative to the axial direction of the impeller 21, and the end of the first end 2121 of the blade 212, which points in the positive rotation direction of the impeller 21, extends toward the side away from other components of the fan assembly 2 and is inclined.

[0091] Define the forward rotation direction of fan assembly 2 as Figure 8 In the direction indicated by the arrow, the first end 2121 of the blade 212 is inclined relative to the axial direction of the impeller 21, and the first end 2121 of the blade 212 points to the front part in the direction of the arrow, and is inclined towards the side away from other components of the fan assembly 2 relative to the rear part. When the fan assembly 2 is installed on the cleaning equipment 10, the first end 2121 of the blade 212 points to the front part in the direction of the arrow, and is inclined towards the side closer to the dust box 1 along the positive rotation airflow direction.

[0092] Specifically, the number, shape, arrangement, and tilt angle of the blades 212 all affect the first and second equivalent areas of the impeller 21. In this embodiment, the number of blades 212 is not less than ten, and multiple blades 212 are arranged in a ring array on the outer periphery of the connecting portion 211.

[0093] The blades 212 are radially mounted on the outer side wall of the connecting portion 211 from the inside to the outside along the radial direction of the connecting portion 211. On a plane perpendicular to the axial direction of the impeller 21, the size of the first end 2121 is smaller than the size of the second end 2122. In other words, along the radial direction of the impeller 21, the size of the first end 2121 of the blade 212 is smaller than the size of the second end 2122.

[0094] In some feasible embodiments, the blade 212 is a curved blade 212, and the portion of the leading edge 2123 of the blade 212 near the second end 2122 is curved forward relative to the portion near the first end 2121 in the forward rotation direction of the impeller 21. This structure helps to increase the wind power of the impeller 21 when it is rotating in the forward direction.

[0095] Under the same rotation direction and speed, increasing the number of blades 212 helps to increase the contact area between the impeller 21 and the air. Under the same speed, it can drive more airflow to increase wind power. However, the increase in the number of blades 212 will also increase the weight of the impeller 21 and the air resistance, which will increase the load on the motor 23 and reduce the speed of the impeller 21 to a certain extent.

[0096] Please see Figure 8In this embodiment, the blade 212 and the connecting part 211 are an integral structure.

[0097] In other similar embodiments, multiple blades 212 constituting the impeller 21 can be arranged at intervals around the outer peripheral sidewall of the connecting portion 211 and movably connected to the connecting portion 211, and the tilt angle of the blades 212 relative to the axial direction of the impeller 21 can be adjusted. In this case, the output wind force of the fan assembly 2 can be adjusted by adjusting the tilt angle of the blades 212.

[0098] Under the conditions of the same rotation direction and the same rotation speed, within a certain range, the larger the tilt angle of blade 212, the larger its equivalent area.

[0099] For example, the impeller 21 further includes an adjustment drive, and the end of the blade 212 near the connecting portion 211 is a first end 2121, which is connected to the connecting portion 211 via the adjustment drive. The adjustment drive is configured to drive the blade 212 to rotate to change the tilt angle of the blade 212 relative to the impeller 21 in the circumferential direction.

[0100] Specifically, the impeller 21 also includes a reset elastic element, and the blade 212 can be connected to the connecting part 211 through the reset elastic element. When the blade 212 is in the forward rotation direction, the reset elastic element is in the normal state; when the blade 212 is driven to rotate in the reverse rotation direction by the adjusting drive, the reset elastic element is in the compressed state. After the external force applied to the blade 212 by the adjusting drive is removed, in response to the deformation recovery of the reset elastic element, the blade 212 returns to the forward rotation position.

[0101] The aforementioned forward rotation position refers to the first end 2121 of the blade 212 being tilted towards the side closer to the dust box 1 in the forward rotation direction; the reverse rotation position refers to the first end 2121 of the blade 212 being tilted towards the side closer to the middle of the fan assembly 2 in the forward rotation direction.

[0102] When blade 212 is in the forward rotation position, the aforementioned reset elastic element is not compressed to provide a force to maintain blade 212 in the forward rotation position; when the adjusting drive drives blade 212 to the reverse rotation position, the reset elastic element is compressed, and after the external force applied by the adjusting drive is removed, it pushes blade 212 back to the forward rotation position. The reset elastic element can be a torsion spring or similar structure.

[0103] For example, blade 212 is connected to a rotating shaft, which passes through the connecting portion 211. An adjustment drive (e.g., a motor) can be connected to the rotating shaft via a flexible cable. When the flexible cable is pulled, it can pull blade 212, causing the angle of blade 212 to change. At this time, the reset elastic element changes elastically in response to the change in the angle of blade 212, resulting in elastic deformation.

[0104] Please see Figure 6 and Figure 7 The fan assembly 2 also includes an air guide shroud 22 and a motor 23. The motor 23 is installed inside the air guide shroud 22, and the impeller 21 is connected to the output end of the motor 23 and installed at one axial end of the air guide shroud 22. When the fan assembly 2 rotates in the forward direction, the airflow flows through the impeller 21 to the motor 23 and the air guide shroud 22; when the fan assembly 2 rotates in the reverse direction, the airflow flows through the motor 23 and the air guide shroud 22 to the impeller 21 under the action of the motor 23.

[0105] Specifically, the impeller 21 is interference-fitted with the output end of the motor 23 and clearance-fitted with the air guide shroud 22. The axial portion of the impeller 21 is located inside the air guide shroud 22.

[0106] Please see Figure 7 and Figure 9 The air guide shroud 22 is provided with guide vanes 221. There are multiple guide vanes 221, which are arranged at intervals along the circumference of the air guide shroud 22.

[0107] Specifically, the air guide shroud 22 is a hollow shell structure comprising an inner shell 222 and an outer shell 223 arranged radially at intervals. Guide vanes 221 are located between the inner shell 222 and the outer shell 223 and extend axially along the air guide shroud 22. Multiple guide vanes 221 are spaced apart between the inner shell 222 and the outer shell 223, thereby forming multiple spaced flow channels 2201 between the inner shell 222 and the outer shell 223. The inner sidewall of the inner shell 222 includes a first mounting channel and a second mounting channel connected along its axial direction. A stepped surface is formed at the connection between the first and second mounting channels. The first mounting channel is used to mount the stator 232 of the motor 23, and the second mounting channel is used for the output end of the motor 23 to extend into. The output end of the motor 23 passes through the second mounting channel and connects to the impeller 21.

[0108] To further improve the structural strength of the air guide shroud 22, the outer shell 223, the inner shell 222, and the guide vanes 221 are integrally formed.

[0109] When the fan assembly 2 starts up, the heat generated by the stator 232 can be transferred to the inner casing 222 and the guide vanes 221 of the air guide shroud 22. The airflow flowing through the flow channel 2201 formed in the air guide shroud 22 can carry away the heat, thus helping to dissipate heat from the fan assembly 2.

[0110] To improve the flow guiding effect of the guide vanes 221, any one of the guide vanes 221 is spiral-shaped, so that the flow channel 2201 formed between two adjacent guide vanes 221 is streamlined. This structure helps to reduce wind resistance and noise. In other similar embodiments, the guide vanes 221 can also be provided as inclined plate structures, in which case the guide vanes 221 are oblique guide vanes.

[0111] In one feasible implementation, the rotation direction of the guide vane 221 is set opposite to the rotation direction of the blade 212 set on the impeller 21, so as to reduce the operating noise of the fan assembly 2.

[0112] The direction of airflow after exiting blade 212 is determined. When the rotation direction of guide vane 221 is opposite to the tangential direction of the airflow at the exit of blade 212, the rotation direction of guide vane 221 is opposite to the rotation direction of blade 212. Please refer to [link to relevant documentation]. Figure 7 .

[0113] When the fan assembly 2 rotates in the forward direction, the noise emitted by the fan assembly 2 with the counter-rotating guide vanes 221 is less than the noise emitted by the fan assembly 2 with the forward-rotating guide vanes 221. Similarly, when the fan assembly 2 rotates in the reverse direction, the noise emitted by the fan with the counter-rotating guide vanes 221 is greater than the noise emitted by the fan assembly 2 with the forward-rotating guide vanes 221.

[0114] Please see Figure 7 The second installation channel is also equipped with a bearing, and the output shaft 231 of the motor 23 is connected to the inner cover 222 of the air guide shroud 22 through the bearing. Of course, there can be one or more bearings, and this embodiment does not limit the number of bearings.

[0115] Please see Figure 6 and Figure 7 The fan assembly 2 also includes a controller 24, which is located on the side of the fan assembly 2 facing away from the dust box 1 and is connected to the motor 23.

[0116] Specifically, the controller 24 is connected to the stator 232 of the motor 23 and is located at the end of the motor 23 facing away from the impeller 21. The stator 232 has lead wires that extend through the first mounting channel and are plugged into the controller 24 via inserts.

[0117] When the fan assembly 2 is working, the airflow passing through the motor 23 and the controller 24 can carry away the heat generated by the motor 23 and the controller 24 during operation, achieving a better heat dissipation effect. This allows the fan assembly 2 to maintain high power operation for a longer period of time, thereby improving the cleaning effect of the cleaning equipment 10 to a certain extent.

[0118] To further improve the stability and reliability of the operation of the fan assembly 2 and reduce the noise generated during operation, in some embodiments, the fan assembly 2 can be dynamically balanced. For example, a balance block 4 is installed at the end of the motor 23 in the fan assembly 2 away from the impeller 21; and / or, along the axial direction of the fan assembly 2, a portion of the surface of the impeller 21 is recessed to form a weight-reducing balance groove 2111.

[0119] Specifically, the balance block 4 can be a ring-shaped structure that surrounds the outer peripheral sidewall of the motor 23 and is fitted onto the output shaft 231. In this embodiment, the specific number of balance blocks 4 is not limited when the balance block 4 is a ring-shaped structure.

[0120] Please see Figure 7 The balance block 4 can be an integral structure with the rotor 233 and sleeved on the output shaft 231. By adding the balance block 4, the dynamic balance performance of the fan assembly 2 can be improved, and the vibration and noise generated by the fan assembly 2 during operation can be reduced.

[0121] Specifically, a portion of the impeller 21 facing the motor 23 and / or a portion of the impeller 21 facing away from the motor 23 can be recessed axially inward to form a weight-reducing balancing groove 2111. See also... Figure 8 The aforementioned weight-reducing balancing groove 2111 is an annular structure formed on the connecting portion 211 of the impeller 21 and located on the side of the impeller 21 facing the motor 23. Alternatively, multiple weight-reducing balancing grooves 2111 may be provided and arranged symmetrically around the axial center of the impeller 21. Alternatively, multiple weight-reducing balancing grooves 2111 may be annular structures with different radial dimensions and arranged nested sequentially on the surface of the impeller 21.

[0122] In another embodiment, the fan assembly 2 includes a controller 24, a motor 23, and an impeller 21. The controller 24 is connected to the motor 23, and the motor 23 is connected to the impeller 21. In response to the drive current output by the controller 24, the motor 23 drives the impeller 21 to rotate. The controller 24 is configured such that the drive current output for driving the impeller 21 to rotate in the forward direction is greater than the drive current for driving the impeller 21 to rotate in the reverse direction.

[0123] The controller 24 controls the magnitude of the output drive current, thereby controlling the wind force generated by the forward and reverse rotation of the impeller 21, so that the wind force generated when the fan assembly 2 rotates forward is always greater than the wind force generated when the fan assembly 2 rotates in reverse.

[0124] In one feasible implementation, the fan assembly 2 further includes a wind guide shroud 22, a motor 23 is installed inside the wind guide shroud 22, an impeller 21 is connected to the output shaft 231 of the motor 23 and is installed at one end of the wind guide shroud 22 in the axial direction, and a controller 24 is located at the end of the motor 23 facing away from the impeller 21.

[0125] Please refer to the previous text for the structure of the air guide shroud 22, which will not be repeated here.

[0126] In a second aspect, embodiments of this application also provide a cleaning system, including a cleaning device 10 and a cleaning base station, wherein the cleaning device 10 is the cleaning device 10 described in any of the above claims.

[0127] The cleaning system provided in this application includes the cleaning equipment 10 described above. Therefore, the beneficial effects of the cleaning system including any one or more of the cleaning equipment 10 described above will not be repeated here.

[0128] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0129] The above description is merely a preferred embodiment of this application and is 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 cleaning apparatus, characterized by, include: Cleaning components, used to contact the surface to be cleaned; The dust box has a receiving cavity that is in airflow communication with the cleaning component; The fan assembly is in airflow communication with the receiving cavity of the dust box, and the fan assembly is configured such that the wind force generated by forward rotation is greater than the wind force generated by reverse rotation. A filter assembly is disposed between the receiving cavity and the fan assembly; When the fan assembly rotates in the forward direction, the airflow passing through the cleaning component flows from the receiving cavity and the filter assembly to the fan assembly. When the fan assembly rotates in the reverse direction, the airflow flows from the fan assembly through the filter assembly to the receiving cavity.

2. The cleaning apparatus of claim 1, wherein, The fan assembly includes an impeller, which is configured such that a first equivalent area is greater than a second equivalent area, the first equivalent area being the equivalent area of ​​the blades compressing air when rotating in the forward direction, and the second equivalent area being the equivalent area of ​​the blades compressing air when rotating in the reverse direction.

3. The cleaning apparatus of claim 2, wherein, The impeller includes: Connecting part; Multiple blades are arranged at intervals around the outer peripheral sidewall of the connecting part. One end of each blade is connected to the outer surface of the connecting part to form a first end, and the other end extends in a direction away from the connecting part to form a second end. Relative to the axial direction of the impeller, the first end of the blade is inclined towards the side closer to the dust box along the front side of the positive rotation direction of the impeller. In a plane perpendicular to the impeller axis, the dimension of the first end is smaller than the dimension of the second end.

4. The cleaning equipment according to claim 1, characterized in that, The fan assembly includes an impeller, which includes a connecting portion and a plurality of blades. The blades are arranged at intervals around the outer peripheral sidewall of the connecting portion and are movably connected to the connecting portion. The tilt angle of the blades relative to the axial direction of the impeller is adjustable.

5. The cleaning apparatus of claim 4, wherein, The impeller also includes an adjustment drive component, and the end of the blade near the connecting part is the first end, which is connected to the connecting part through the adjustment drive component; The adjustment drive is configured to drive the blade to rotate in order to change the tilt angle of the blade relative to the impeller circumferential direction.

6. The cleaning apparatus of claim 2, wherein, The fan assembly also includes an air guide shroud and a motor. The motor is installed inside the air guide shroud, and the impeller is connected to the output end of the motor and installed at one end of the air guide shroud in the axial direction. When the fan assembly rotates in the forward direction, the airflow flows through the impeller to the motor. When the fan assembly rotates in the reverse direction, the airflow flows through the motor to the impeller.

7. The cleaning apparatus of claim 6, wherein, The air guide shroud is equipped with guide vanes, and the rotation direction of the guide vanes is opposite to that of the blades.

8. The cleaning apparatus of claim 6, wherein, The fan assembly also includes a controller, which is connected to the motor and located at the end of the motor facing away from the impeller.

9. The cleaning apparatus of claim 1, wherein, The fan assembly includes a controller, a motor, and an impeller. The controller is connected to the motor, and the motor is connected to the impeller. In response to the drive current output by the controller, the motor drives the impeller to rotate. The controller is configured such that the output drive current for driving the impeller to rotate in the forward direction is greater than the drive current for driving the impeller to rotate in the reverse direction.

10. The cleaning apparatus of claim 9, wherein, The fan assembly also includes an air guide shroud, the motor is installed inside the air guide shroud, the impeller is connected to the output shaft of the motor and is installed at one end of the air guide shroud in the axial direction, and the controller is located at the end of the motor opposite to the impeller.

11. The cleaning apparatus of any one of claims 4-10, wherein, A counterweight is installed at the end of the fan assembly away from the impeller; And / or, along the axial direction of the fan assembly, a portion of the impeller surface is recessed to form a weight-reducing balancing groove.

12. The cleaning apparatus of any one of claims 1-10, wherein, The dust box has a first air inlet and a second air inlet, both of which are connected to the receiving cavity. The cleaning component is disposed adjacent to the first air inlet, the filter assembly is installed at the second air inlet, and the fan assembly is connected to the receiving cavity through the second air inlet. When the fan assembly rotates in the forward direction, the airflow flows from the first air outlet through the receiving cavity to the second air outlet; when the fan assembly rotates in the reverse direction, the airflow flows from the second air outlet through the filter assembly to the receiving cavity.

13. The cleaning apparatus of claim 12, wherein, The cleaning device further includes a first flap, which is located within the receiving cavity and connected to the dust box. The first flap is located at the first air outlet and is configured such that when the fan assembly rotates in the forward direction, the first flap rotates and exposes the first air outlet; when the fan assembly rotates in the reverse direction, the first flap covers and closes the first air outlet. And / or, the dust box is further provided with a third air vent communicating with the receiving cavity, and the cleaning device further includes a second flap, which is located outside the third air vent. The second flap is configured to cover and close the third air vent when the fan assembly rotates in the forward direction.

14. A cleaning system characterized by, It includes cleaning equipment and cleaning base stations, wherein the cleaning equipment is the cleaning equipment according to any one of claims 1-13.

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