Cleaning apparatus and cleaning system

Abstract

The application relates to the technical field of cleaning products, in particular to a cleaning device and a cleaning system. The cleaning device provided by the application comprises a shell, a fan assembly and a filter assembly; the fan assembly is arranged in the shell; the fan assembly has switchable first and second air ducts; the filter assembly is arranged in the shell and forms first and second airflow channels; the cleaning device has a suction state, the fan assembly is switched to the first air duct, the first airflow channel is communicated with the first air duct, and airflow flows to the fan assembly through the filter assembly; the cleaning device has a blowing state, when the fan assembly is switched to the second air duct, the second air duct is communicated with the second airflow channel, airflow flows from the fan assembly to the filter assembly, the airflow path is optimized in the two modes of dust collection and self-cleaning, and the problems of low efficiency, large resistance or poor cleaning effect possibly caused when a single channel is used for forward and reverse blowing and suction are avoided.

Description

Technical Field

[0001] This application relates to the field of cleaning product technology, and more particularly to a cleaning device and cleaning system. Background Technology

[0002] Vacuum cleaners and other cleaning equipment are widely used for daily household cleaning. In these devices, the dust cup is the core component for collecting dust and dirt. To ensure the cleanliness of the exhaust air and prevent fine dust from being re-released into the environment and causing secondary pollution, a filter is usually installed inside the dust cup.

[0003] In related technologies, as cleaning equipment operates for longer periods, dust accumulates on the surface of the filter components. Therefore, cleaning of the filter components is necessary. Some product designs employ a reverse-blowing design using a fan to blow air from the original duct. By reversing the fan, the airflow passes through the filter components in the opposite direction. This reverse airflow blows the dust adhering to the surface of the filter components away, causing it to detach from the filter components.

[0004] However, current cleaning equipment suffers from poor cleaning results because the airflow encounters high resistance when backflushing the filter components through the original air duct. Summary of the Invention

[0005] This application provides a cleaning device and a cleaning system to solve the technical problem that the current cleaning device has high air resistance when backflushing the filter components, resulting in poor cleaning effect.

[0006] In a first aspect, this application provides a cleaning device, the cleaning device comprising:

[0007] case;

[0008] A fan assembly is disposed within the housing; the fan assembly has a switchable first air duct and a second air duct;

[0009] A filter assembly is disposed within the housing and forms a first airflow channel and a second airflow channel;

[0010] The cleaning device has a suction state, in which the fan assembly switches to the first air duct, the first airflow channel is connected to the first air duct, and the airflow flows through the filter assembly to the fan assembly; the cleaning device also has a blowing state, in which the fan assembly switches to the second air duct, the second air duct is connected to the second airflow channel, and the airflow flows from the fan assembly to the filter assembly.

[0011] The cleaning device provided in this application optimizes the airflow path in both vacuuming and self-cleaning modes by setting up a fan assembly with a switchable first and second airflow duct, and forming corresponding first and second airflow channels on the filter assembly. This avoids the problems of low efficiency, high resistance, or poor cleaning effect that may occur when using a single channel for forward and reverse blowing and suction. It can ensure good flow smoothness and flow efficiency in both states, so that the self-cleaning airflow does not need to rely on the original vacuuming path, and can have better self-cleaning effect and self-cleaning efficiency.

[0012] As an optional implementation, the filtration assembly includes a first filtration unit and a dust-gas separation structure; the dust-gas separation structure is connected to the fan assembly.

[0013] When in the suction state, the first airflow channel is open, and the suction airflow passes through the first filter unit and the dust-air separation structure in sequence;

[0014] When in the blowing state, the second airflow channel is open, and the self-cleaning airflow passes sequentially through the dust-air separation structure and the first filter unit.

[0015] This design makes the self-cleaning process more thorough and efficient, capable of cleaning both stages of the filter structure simultaneously.

[0016] As an optional implementation, the first filter unit and the dust-gas separation structure are arranged along the length of the housing; the first airflow channel and the second airflow channel partially overlap.

[0017] This design simplifies and miniaturizes the structure, resulting in a compact design.

[0018] As an optional implementation, the filter assembly further includes a ventilation bracket connected between the first filter unit and the dust-air separation structure; both the first air duct and the second air duct pass through the ventilation bracket.

[0019] This design simplifies the internal air duct design and avoids complex independent piping.

[0020] As an optional implementation, the first filter unit has a fixed end and a free end at its two ends along its length, respectively. The fixed end is provided with a flexible joint and is connected to the ventilation bracket through the flexible joint. The flexible joint is configured to allow the first filter unit to vibrate relative to the ventilation bracket.

[0021] This design enables a flexible suspension installation method, which helps to shake off dust particles attached to the filter surface.

[0022] As an optional implementation, the flexible joint is bonded or coated with adhesive to the ventilation bracket for secure connection; and / or,

[0023] The lower end of the flexible connector is sleeved on the outer side of the upper end of the first filter unit.

[0024] This design ensures reliable connection between the flexible joint and the ventilation bracket, while eliminating the need for other connecting components. The simple structure reduces space occupation and lowers costs.

[0025] As an optional implementation, the dust-gas separation structure has a dust collection chamber with an opening that can be opened or closed; the opening is configured such that when opened, the second airflow channel is open, and when closed, the second airflow channel is closed.

[0026] This design avoids energy loss and incomplete cleaning caused by the reverse airflow having to pass through a complex separation structure.

[0027] As an optional implementation, the dust-gas separation structure includes a cylinder, a cyclone guide section, and a ventilation pipe; the cylinder is used to form the dust collection chamber, and the opening is located at one end of the cylinder facing the first filter unit; the cylinder is provided with an opening at one end away from the first filter unit, the ventilation pipe is disposed at the opening, and the cyclone guide section is located between the inner wall of the cylinder and the outer wall of the ventilation pipe;

[0028] When the second airflow channel is not open, the first airflow channel causes the dust-collecting airflow to flow from the first filter unit through the outside of the cylinder to the opening, and then through the cyclone guide to the ventilation pipe;

[0029] When the second airflow channel is open, the second airflow channel allows the self-cleaning airflow to enter the interior of the cylinder from the ventilation pipe, and then flow from the opening to the first filter unit after passing through the dust collection chamber.

[0030] With this setup, both channels can achieve low-resistance flow.

[0031] As an optional implementation, the cyclone guide includes multiple spiral blades, which are spaced apart and spirally extended on the outside of the ventilation duct to form multiple guide channels; the guide channels are used to guide the dust-collecting airflow spirally downward.

[0032] This design achieves a simple and efficient centrifugal separation guide structure.

[0033] As an alternative implementation, the opening is provided with a first valve, which is configured to close the opening under the pressure of the suction airflow and / or open the opening under the pressure of the self-cleaning airflow.

[0034] This design enables a simple, non-powered, and highly responsive automatic valve.

[0035] As an optional implementation, the first filter unit is annular and has a filter surface and a vent, wherein the filter surface and the vent do not overlap; the vent is provided with a second valve.

[0036] When in the suction state, the second valve closes the vent, and the airflow passes through the filter surface from the outside to the inside of the first filter unit;

[0037] When in the blowing state, the second valve opens the vent, and the airflow flows from the inside to the outside of the first filter unit through the vent.

[0038] This configuration enables the separation and optimization of airflow paths in both states.

[0039] As an optional implementation, a third valve is provided inside the first filter unit; the third valve is located on the side of the vent away from the dust-gas separation structure.

[0040] The third valve is used to open the ventilation section inside the first filter unit in the suction state and to block the ventilation section inside the first filter unit in the blowing state.

[0041] This design avoids airflow dispersion and significantly improves the efficiency and effectiveness of self-cleaning.

[0042] As an alternative implementation, the second valve is configured to close the vent under the pressure of the suction airflow, and / or open the vent under the pressure of the self-cleaning airflow;

[0043] The third valve is configured to open the ventilation section inside the first filter unit under the pressure of the suction airflow, and / or block the ventilation section inside the first filter unit under the pressure of the self-cleaning airflow.

[0044] This design allows for a very quick and smooth transition between the vacuuming and self-cleaning modes.

[0045] As an optional implementation, both the second valve and the third valve are located at one end of the first filter unit near the dust-gas separation structure; the second valve is located on the side wall of the first filter unit, and the third valve is located below the second valve.

[0046] This design reduces eddies and resistance, making the valve more responsive.

[0047] As an optional implementation, there are multiple vents, which are arranged circumferentially around the first filter unit, and each vent is provided with the second valve.

[0048] With this setup, during the self-cleaning process, the reverse airflow can be blown out evenly from multiple directions around the filter simultaneously.

[0049] As an optional implementation, the fan assembly includes a first fan and a switching mechanism, the first fan having an air inlet and an air outlet; the housing has ventilation holes;

[0050] When in the suction state, the switching mechanism is configured such that the air inlet is connected to the filter assembly and the air outlet is connected to the ventilation hole to form the first air duct;

[0051] When in the blowing state, the switching mechanism is configured such that the air inlet is connected to the ventilation hole and the air outlet is connected to the filter assembly to form the second air duct.

[0052] This design avoids the lifespan and noise issues that may result from frequent forward and reverse rotation of the fan.

[0053] As an optional implementation, the switching mechanism includes a duct support frame and a rotating component disposed within the duct support frame. The switching mechanism has a first channel and a second channel, wherein the first channel is connected to the air inlet and the second channel is connected to the air outlet.

[0054] The rotating component has a first position and a second position. When it is in the first position, the first channel is connected to the filter assembly and the second channel is connected to the ventilation hole. When it is in the second position, the first channel is connected to the ventilation hole and the second channel is connected to the filter assembly.

[0055] This design achieves a compact, well-sealed, and reliable flow channel switching solution.

[0056] As an optional implementation, the rotating member forms the first channel; and / or,

[0057] The rotating component forms the second channel, or the rotating component cooperates with the air duct support frame to form the second channel.

[0058] This configuration avoids airflow crosstalk between the first and second channels.

[0059] As an optional implementation, the air inlet faces the filter assembly; the rotating member is rotatably disposed at the air inlet, the first channel is opposite to the air inlet along the axial direction of the first fan, the second channel is located outside the first channel, and the airflow at the air outlet flows to the second channel via the outside of the first fan.

[0060] This configuration, with its compact radial and axial layout, makes full use of the limited space, allowing for control over the radial dimensions of the entire fan and switching mechanism module.

[0061] As an optional implementation, the fan assembly further includes a fan shroud, which is disposed on the outside of the first fan, and there is a gap between the outer wall of the first fan and the inner wall of the fan shroud; the airflow at the outlet flows through the gap to the second channel.

[0062] This setup ensures the reliability and stability of the first fan installation and allows space for airflow.

[0063] As an optional implementation, the fan assembly further includes a fan top cover, which is connected to the top of the fan shroud and is positioned at the air outlet to redirect the airflow from the first fan into the gap.

[0064] This design provides a good seal and guides the airflow.

[0065] As an optional implementation, the switching mechanism further includes a drive unit, the output end of which is connected to the rotating member for driving the rotating member to rotate; and / or, the rotating member rotates by an angle of 180° between the first position and the second position.

[0066] This setup allows for quick and accurate switching of the rotating component between two positions.

[0067] As an optional implementation, the switching mechanism further includes a bushing, a bearing seat is provided on the rotating component, the bushing is sleeved on the output end of the drive unit, and the bushing is inserted into the bearing seat.

[0068] This configuration improves the reliability of the connection between the rotating component and the output shaft of the drive unit, and avoids positional deviation of the rotating component caused by relative rotation between the two.

[0069] As an optional implementation, the switching mechanism further includes a motor bracket, which is disposed at the end of the rotating component away from the first fan, and the motor bracket is connected to the duct support frame, and the drive unit is disposed on the motor bracket.

[0070] This configuration allows the components of the switching mechanism to be assembled as a single module, improving the convenience of production assembly and reducing costs.

[0071] As an optional implementation, the duct support frame includes a mounting sleeve and a mounting plate. The mounting plate is connected inside the mounting sleeve. The rotating component is rotatably accommodated within the space enclosed by the mounting sleeve and the mounting plate. The side wall of the mounting sleeve is provided with a first through hole, which communicates with the ventilation hole. The mounting plate is provided with a dust suction port and a dust blowing port.

[0072] The rotating component is used to open one of the suction port and the blowing port and connect it to the filter assembly, while simultaneously closing the other of the suction port and the blowing port.

[0073] This design integrates guiding, sealing, and switching functions, resulting in a very compact connection between the fan components and the switching mechanism.

[0074] As an optional implementation, the rotating component has a first air inlet channel and a second air inlet channel; the first air inlet channel has a second through hole at the bottom, a third through hole at the top, and a fourth through hole on the side; the second air inlet channel is located to the side of the first air inlet channel and communicates with the first air inlet channel through the fourth through hole; the second air inlet channel has a fifth through hole on the side away from the fourth through hole; the bottom of the rotating component is disposed opposite to the mounting plate;

[0075] The first air intake channel and the second air intake channel together form the first channel;

[0076] The second channel is located on the side of the first air intake channel away from the second air intake channel.

[0077] This design allows airflow to be redirected and split within a narrow space.

[0078] As an optional implementation, the outer wall of the first air inlet channel on the side away from the second air inlet channel and the air duct support frame together form the second channel, which can improve the compactness of the structure; or,

[0079] A guide rib is provided on the side of the first air inlet channel away from the second air inlet channel, and the guide rib forms the second channel with the outer wall of the first air inlet channel on the side away from the second air inlet channel. This arrangement can provide guidance for the rotation of the rotating component, making the rotation process of the rotating component more stable.

[0080] As an optional implementation, the third through hole is always connected to the air inlet; the top of the second channel is always connected to the air outlet.

[0081] When the rotating component is in the first position, the second through hole is connected to the dust suction port, and the bottom of the rotating component closes the dust blowing port. The fifth through hole is closed by the air duct support frame, and the second channel is directly opposite the ventilation hole.

[0082] When the rotating component is in the second position, the mounting plate closes the second through hole, the fifth through hole is directly opposite to and connected to the ventilation hole, the bottom of the rotating component closes the dust suction port, and the second channel is connected to the dust blowing port.

[0083] This design utilizes a rotating component to achieve complex cross-directional switching, ensuring that the fan can operate normally in both modes and guaranteeing smooth airflow.

[0084] As an optional implementation, the cleaning device further includes a second filtration unit disposed between the filtration assembly and the fan assembly.

[0085] This setup enables precise filtration of the airflow.

[0086] As an optional implementation, the second filter unit is annular, and the diameter of the end of the second filter unit facing the fan assembly is smaller than the size of the end of the second filter unit facing the filter assembly.

[0087] The outer side of the second filter unit is connected to the fan assembly; the inner side of the second filter unit is connected to the filter assembly.

[0088] This setup increases the filtration area while guiding the airflow to change direction smoothly.

[0089] As an optional implementation, the fan assembly has a duct support frame, the circumferential sidewall of which extends to the periphery of the second filter unit and forms a ventilation gap with the outer surface of the second filter unit.

[0090] This configuration limits the movement of the second filter unit and ensures that the airflow passes through it, preventing airflow leakage into gaps in other areas of the housing.

[0091] As an optional implementation, the cleaning device further includes a floor brush connected to one end of the housing along its length; the floor brush has an air intake; the housing includes a dust cup body with a dust storage chamber; the dust storage chamber has an openable or closable air inlet;

[0092] When in the suction state, the air inlet is open to connect the air inlet with the dust storage chamber; when in the blowing state, the air inlet is closed.

[0093] This design prevents reverse airflow from being ejected from the brush end, which could cause dust or hazard.

[0094] As an alternative implementation, the cleaning device may further include a power supply assembly disposed within the housing; the power supply assembly is located at the end of the fan assembly opposite to the filter assembly along the length of the housing.

[0095] This design allows the weight of the front brush and filter components to be balanced, reducing strain on the user's wrist.

[0096] As an alternative implementation, one end of the housing along its length has a handle, and the power supply assembly is located within the handle.

[0097] This design eliminates the need for a separate protruding battery compartment, resulting in a cleaner and more streamlined appearance.

[0098] Secondly, this application provides a cleaning system, including a cleaning base station and the cleaning equipment described in the above technical solution;

[0099] The clean base station includes a base station body and a dust collection component disposed within the base station body;

[0100] After the cleaning device is placed on the cleaning base station, the inside of the housing is connected to the dust collection component; when the cleaning device is in the blowing state, the airflow flows through the second airflow channel to the dust collection component, so that the dust of the cleaning device is concentrated in the dust collection component.

[0101] This setup greatly improves the convenience and hygiene of maintenance, and avoids secondary pollution when dumping dust.

[0102] As an optional implementation, the housing has a dust collection port, which is rotatably connected to a door panel. The cleaning base station has a connecting hole, and the edge of the connecting hole has a protrusion facing the cleaning device. The protrusion is used to abut against the door panel so that when the cleaning device is placed on the cleaning base station, the door panel rotates and opens the dust collection port.

[0103] This design avoids the hassle of requiring users to manually open the dust collection port.

[0104] As an optional implementation, the cleaning base station has a dust collection chamber, and the dust collection component is disposed in the dust collection chamber; the cleaning base station is provided with a second fan, the second fan having an air inlet, the air inlet communicating with the dust collection chamber; the second fan is used to generate airflow from the housing to the dust collection chamber.

[0105] This setup greatly improves dust collection efficiency.

[0106] As an optional implementation, the fan assembly switches to the second air duct simultaneously with or after the cleaning equipment docks with the cleaning base station; and / or,

[0107] The cleaning equipment is disconnected from the cleaning base station, or the fan assembly switches to the first air duct after the cleaning equipment has been connected to the cleaning base station and completed the dust collection or charging operation.

[0108] This setup improves the overall ease of use of the cleaning system.

[0109] As an optional implementation, the dust collection bin is provided with an air outlet that can communicate with the outside.

[0110] When the fan assembly switches to the second air duct and is in working condition, the air outlet is opened; when the fan assembly is in non-working condition or the second fan is started, the air outlet is closed.

[0111] This configuration improves the airflow efficiency of the cleaning equipment when blowing self-cleaning air into the dust collection chamber and reduces wind resistance.

[0112] As an optional implementation, the cleaning base station has a first exhaust duct, and the air outlet of the second fan is connected to the first exhaust duct.

[0113] This design ensures that the airflow generated during dust collection has a clear destination, improving smoothness.

[0114] As an optional implementation, the cleaning base station has a second exhaust duct, the inlet of which is connected to the dust collection chamber, and the outlet of which is connected to the first exhaust duct or to the outside.

[0115] This configuration provides an additional, more direct exhaust path for the gas inside the dust collection chamber.

[0116] As an optional implementation, the second exhaust duct is provided with a second wind baffle;

[0117] When the cleaning equipment is in the blowing state, the second wind deflector makes the second exhaust channel open.

[0118] When the cleaning equipment is not in the blowing state or when the second fan is working, the second baffle keeps the second exhaust duct closed.

[0119] This configuration ensures smooth airflow during self-cleaning operations of different fans.

[0120] As an optional implementation, the second windbreak is disposed at the inlet of the second exhaust duct.

[0121] This design reduces the unused space in the second exhaust duct and avoids pressure loss in a long duct.

[0122] As an optional implementation, the first exhaust duct is provided with a first wind baffle, and the airflow of the first exhaust duct flows from the air outlet of the second fan to the outside; along the airflow direction of the first exhaust duct, the outlet of the second exhaust duct is located downstream of the first wind baffle.

[0123] This design enables the rational guidance of different gas sources and prevents backflow.

[0124] As an optional implementation, the first windbreak is configured to open the first exhaust duct under the airflow pressure of the second fan; and / or,

[0125] The second wind deflector is configured to open the second exhaust channel under the airflow pressure of the fan assembly.

[0126] This design makes the opening and closing structure of the channel simple, reliable, and low-cost.

[0127] As an optional implementation, the inlet of the second exhaust duct is located at the bottom of the dust collection bin, and the second baffle is located at the lower end of the inlet of the second exhaust duct; the second baffle is rotatably connected to the edge of the inlet of the second exhaust duct via a rotating shaft, and a torsion spring is sleeved on the rotating shaft. The torsion spring applies a force to the second baffle to reset the second baffle and close the inlet of the second exhaust duct; and / or,

[0128] The first windbreak is configured to return to its original position by gravity and vertically close the first exhaust channel.

[0129] This setup enables a simple, reliable, and energy-free automatic valve reset mechanism.

[0130] As an optional implementation, the dust collection bin is provided with a ventilation inlet, which is connected to the air inlet.

[0131] The ventilation inlet is located in the central area of ​​the bottom of the dust collection chamber; the inlet of the second exhaust duct is located in the edge area of ​​the bottom of the dust collection chamber.

[0132] This design makes full use of the space at the bottom of the dust collection chamber, separates the inlets of the first and second exhaust ducts, and improves the compactness of the layout.

[0133] As an optional implementation, a third airflow channel is formed on the flow path between the floor brush of the cleaning device and the housing;

[0134] When the second fan is working, the airflow flows to the dust collection bin simultaneously through the second airflow channel and the third airflow channel.

[0135] This setup allows for the creation of an additional airflow loop using the floor brush channel, which helps to more thoroughly remove dust remaining in the vacuum cleaner's tubing.

[0136] As an optional implementation, a one-way valve is provided on the housing, wherein when the fan assembly is started and switched to the first air duct, or when the second fan is working, the one-way valve opens the third airflow channel;

[0137] When the fan assembly switches to the second air duct, the one-way valve closes the third airflow channel.

[0138] This configuration ensures the correct airflow direction in all operating modes, avoiding interference and leakage.

[0139] As an optional implementation, the one-way valve is a flexible baffle connected to the lower end inside the housing; when the third airflow channel is opened, the flexible baffle folds inward into the housing.

[0140] This design utilizes its own elasticity and airflow pressure to achieve opening and closing, resulting in a simple and reliable structure.

[0141] As an optional implementation, when the cleaning equipment is self-cleaning on the cleaning base station, the fan assembly switches to the second air duct; the fan assembly and the second fan are configured to start alternately for a preset duration.

[0142] This configuration improves the thoroughness and efficiency of the base station's self-cleaning process.

[0143] As an optional implementation, when the cleaning device begins self-cleaning, the fan assembly starts before the second fan.

[0144] This configuration avoids potential interference between the two airflows that might occur if they are activated simultaneously.

[0145] As an optional implementation, the power of the second fan is greater than the power of the fan assembly.

[0146] This setup ensures that dust can be thoroughly sucked away even under conditions of resistance.

[0147] This application provides a cleaning device including a housing, a fan assembly, and a filter assembly. The fan assembly is disposed within the housing and has a switchable first air duct and a second air duct. The filter assembly is disposed within the housing and forms a first airflow channel and a second airflow channel. In a suction mode, the fan assembly switches to the first air duct, and the first airflow channel communicates with the first air duct, with airflow passing through the filter assembly to the fan assembly. In a blowing mode, the fan assembly switches to the second air duct, and the second air duct communicates with the second airflow channel, with airflow flowing from the fan assembly to the filter assembly. This optimizes the airflow path in both suction and self-cleaning modes, avoiding the inefficiencies, high resistance, or poor cleaning effects that may occur when using a single channel for forward and reverse blowing and suction. Good flow smoothness and efficiency are guaranteed in both modes, allowing the self-cleaning airflow to operate without relying on the original suction path, resulting in better self-cleaning effect and efficiency.

[0148] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that the cleaning equipment and cleaning system provided by this application can solve, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0149] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0150] Figure 1 This is a schematic diagram of the structure of the cleaning equipment provided in the embodiments of this application;

[0151] Figure 2 A cross-sectional view of the cleaning equipment provided in the embodiments of this application;

[0152] Figure 3 A cross-sectional view of a filter assembly in a cleaning device provided in an embodiment of this application;

[0153] Figure 4 A cross-sectional view of the cleaning device provided in the embodiment of this application in the suction state;

[0154] Figure 5 for Figure 4 A partial view of position A in the middle;

[0155] Figure 6 A cross-sectional view of the filter assembly when the cleaning device provided in the embodiment of this application is in the suction state;

[0156] Figure 7 A cross-sectional view of the cleaning device provided in the embodiment of this application in a blowing state;

[0157] Figure 8 for Figure 7 A partial view of position B in the middle;

[0158] Figure 9 A cross-sectional view of the filter assembly of the cleaning device provided in this application embodiment when it is in the blowing state;

[0159] Figure 10 This is a schematic diagram of the rotating component in the cleaning equipment provided in the embodiments of this application;

[0160] Figure 11 This is a partial internal view of the suction state in the cleaning equipment provided in an embodiment of this application;

[0161] Figure 12 This is a partial internal view of the cleaning equipment in the blowing state provided in an embodiment of this application;

[0162] Figure 13 This is a schematic diagram of the structure of the air duct support frame in the cleaning equipment provided in the embodiments of this application;

[0163] Figure 14 Schematic diagram of another rotating component in the cleaning equipment provided in the embodiments of this application Figure 1 ;

[0164] Figure 15 Schematic diagram of another rotating component in the cleaning equipment provided in the embodiments of this application Figure 2 ;

[0165] Figure 16 Schematic diagram of another rotating component in the cleaning equipment provided in the embodiments of this application Figure 3 ;

[0166] Figure 17 A schematic diagram showing the cleaning equipment provided in this application placed on a cleaning base station;

[0167] Figure 18A cross-sectional view of the cleaning equipment provided in this application embodiment placed in a cleaning base station;

[0168] Figure 19 A schematic diagram of a clean base station provided in an embodiment of this application;

[0169] Figure 20 This is a schematic diagram of the base of a clean base station provided in an embodiment of this application;

[0170] Figure 21 A cross-sectional view of a clean base station provided in an embodiment of this application;

[0171] Figure 22 A cross-sectional view of another structure of the clean base station provided in an embodiment of this application;

[0172] Figure 23 This is a schematic diagram of the air duct inside a clean base station provided in an embodiment of this application;

[0173] Figure 24 A schematic diagram of airflow in the second fan operating state of the clean air base station provided in this application embodiment. Figure 1 ;

[0174] Figure 25 A schematic diagram of airflow in the second fan operating state of the clean air base station provided in this application embodiment. Figure 2 ;

[0175] Figure 26 This is a schematic diagram of the airflow of the clean base station provided in the embodiments of this application during the operation of the wind turbine assembly. Figure 1 ;

[0176] Figure 27 This is a schematic diagram of the airflow of the clean base station provided in the embodiments of this application during the operation of the wind turbine assembly. Figure 2 ;

[0177] Figure 28 An exploded view of a clean base station provided in an embodiment of this application;

[0178] Figure 29 Schematic diagram of the structure of the first exhaust duct in the clean base station provided in the embodiments of this application. Figure 1 ;

[0179] Figure 30 Schematic diagram of the structure of the first exhaust duct in the clean base station provided in the embodiments of this application. Figure 2 .

[0180] Explanation of reference numerals in the attached figures:

[0181] 10- Cleaning equipment;

[0182] 100 - Housing; 101 - First airflow channel; 102 - Second airflow channel; 103 - Ventilation hole; 104 - Air inlet; 105 - Dust storage chamber; 106 - Dust collection port; 110 - Handle; 120 - Door panel; 130 - One-way valve;

[0183] 200-Fan assembly; 201-First air duct; 202-Second air duct; 210-First fan; 220-Switching mechanism; 220a-First channel; 220b-Second channel; 221-Air duct support frame; 2211-Mounting sleeve; 2212-Mounting plate; 2213-First through hole; 2214-Dust suction port; 2215-Dust blowing port; 222-Rotating component; 2221-First air inlet channel; 2222-Second air inlet channel; 2223-Second through hole; 2224-Third through hole; 2225-Fourth through hole; 2226-Fifth through hole; 2227-Outer wall; 2228-Guide rib; 223-Drive unit; 224-Shaft sleeve; 225-Shaft seat; 226-Motor bracket; 230-Fan cover; 240-Fan top cover;

[0184] 300-Filter assembly; 310-First filter unit; 311-Filter surface; 312-Ventilation port; 313-Second valve; 314-Third valve; 320-Dust-gas separation structure; 321-Dust collection chamber; 321a-Opening; 321b-Open mouth; 322-Cylinder body; 323-Cyclone guide; 3231-Helical blade; 324-Ventilation pipe; 325-First valve; 330-Ventilation support; 340-Flexible joint;

[0185] 400 - Second Filter Unit;

[0186] 500 - Floor brush; 501 - Air intake; 502 - Third airflow channel;

[0187] 600-Power Supply Unit;

[0188] 20-Clean base station; 21-Base station body; 21a-Connecting hole; 21b-Protrusion; 21c-Dust collection bin; 21d-Air outlet; 21e-Ventilation inlet; 22-Dust collection component; 23-Second fan; 23a-Air inlet; 23b-Fan vibration damping pad; 23c-Fan sealing gasket; 24-First exhaust duct; 25-Second exhaust duct; 26-First wind deflector; 27-Second wind deflector; 28-Third filter unit; 28a-Filter cover. Detailed Implementation

[0189] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0190] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "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.

[0191] The terms “first,” “second,” and “third” (if any) used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0192] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such as a process, method, system, product, or maintenance tool that includes a series of steps or units, not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or maintenance tool.

[0193] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0194] Vacuum cleaners, floor scrubbers, and other cleaning equipment are widely used for daily cleaning in homes and commercial spaces. In these devices, the dust cup is the core component for collecting dust and dirt. To ensure the cleanliness of the exhaust air and prevent fine dust from being re-released into the environment and causing secondary pollution, a filter assembly is usually installed inside the dust cup. This filter assembly is located at the end of the airflow channel. After the dust and air undergo preliminary cyclone separation or other separation methods, it intercepts and filters any remaining fine dust, ensuring clean exhaust air. As the cleaning equipment operates for longer periods, dust accumulates on the surface of the filter assembly. When the dust accumulates to a certain level, the pores of the filter assembly become blocked, increasing airflow resistance, leading to decreased suction power or even malfunction. At this point, the filter assembly needs to be cleaned to restore its air permeability.

[0195] Currently, to clean filter components, some product designs employ a technique that uses a fan to backflush the filter from the original air duct. Specifically, when cleaning the filter components, the fan can be reversed, causing the airflow to pass through the filter components in the opposite direction. This reverse airflow blows away dust adhering to the surface of the filter components, causing it to detach and thus cleaning the filter components.

[0196] However, this backflush cleaning solution in the prior art has a significant technical problem: the airflow resistance of the backflush airflow through the original air duct is large, resulting in poor cleaning effect.

[0197] On the one hand, in normal dust collection mode, the original duct design is intended to guide dust-laden airflow smoothly from the air inlet to the filter components. Its duct shape, cross-sectional changes, and internal structure are all designed according to the optimal path of forward airflow. When the reverse airflow flows through the same duct in the opposite direction, the original duct structure becomes an obstacle to reverse flow. For example, structures such as the conical constriction section, guide vanes, and dust baffles in the duct will generate significant local resistance when flowing in reverse, greatly increasing the flow resistance of the reverse airflow.

[0198] On the other hand, the original air duct usually contains a complex multi-stage filtration structure. These structures contain numerous slits, flow surfaces, and turning channels. The backflushing airflow must overcome enormous resistance as it passes through these structures, resulting in a significant reduction in the velocity and flow rate of the backflushing airflow that actually reaches the surface of the filter element. Due to the insufficient airflow volume and velocity, it cannot generate enough airflow impact force to effectively remove the fine dust adhering deep within the filter element fibers. As a result, only surface dust can be blown away, while deeply clogged dust remains on the filter element, leading to a very limited cleaning effect.

[0199] In addition, the narrow gaps and complex structure of the original air duct are easily blocked again by the dust blown off, making it difficult for the dust blown down to be discharged smoothly. Instead, it may re-adhere to other parts, further reducing the cleaning effect.

[0200] Therefore, how to provide efficient and sufficient backflushing airflow to the filter components without making significant changes to the original air duct, so as to thoroughly remove the dust attached to the filter components, has become a key problem that urgently needs to be solved in the self-cleaning technology of filter components in cleaning equipment.

[0201] To address the aforementioned technical problems, this application provides a cleaning device and system that performs vacuuming operations in suction mode and cleaning operations on filter components and other internal parts in blowing mode. By setting a fan assembly with switchable air ducts and forming different airflow channels on the filter assembly, the suction airflow and the self-cleaning airflow have different flow paths. In both modes, good flow smoothness and flow efficiency can be guaranteed, thereby enabling the self-cleaning airflow to not rely on the original suction path and to have better self-cleaning effect and efficiency.

[0202] The following is an example illustrating the application scenarios of the cleaning equipment provided in the embodiments of this application.

[0203] The cleaning equipment provided in this application embodiment may include, but is not limited to, vacuum cleaners, mopping machines, floor scrubbers, and robotic vacuum cleaners, depending on the product type. The cleaning equipment provided in this application embodiment can be used to clean surfaces of various materials, such as flexible materials like bedding, sofas, and clothing, or hard materials like floors, tiles, and glass. This application embodiment does not specifically limit the scope of the cleaning equipment.

[0204] See Figures 1 to 9 As shown, this application provides a cleaning device 10, which includes a housing 100, a fan assembly 200, and a filter assembly 300. The housing 100 constitutes the external structure of the cleaning device 10, serving to house and protect the internal components. The fan assembly 200 is disposed inside the housing 100 and is used to generate airflow. The filter assembly 300 is disposed inside the housing 100 and is used to filter dust particles and other debris from the airflow during cleaning operations such as vacuuming.

[0205] The fan assembly 200 has a switchable first air duct 201 and a second air duct 202, meaning that the internal airflow path of the fan assembly 200 can be switched as needed. The filter assembly 300 forms a first airflow channel 101 and a second airflow channel 102 inside the housing 100.

[0206] For example, the first airflow channel 101 and the second airflow channel 102 can be independent airflow paths or airflow paths with partially overlapping areas.

[0207] The cleaning device 10 provided in this application embodiment has two working states: suction state and blowing state.

[0208] Understandably, in the suction state, the fan assembly 200 switches to the first air duct 201, and the first airflow channel 101 is connected to the first air duct 201. The airflow passes through the filter assembly 300 from the outside and then flows to the fan assembly 200 to achieve the dust collection operation.

[0209] In the blowing state, the fan assembly 200 switches to the second air duct 202. At this time, the second air duct 202 is connected to the second airflow channel 102. The airflow flows out from the fan assembly 200 and flows in the opposite direction to the filter assembly 300, thereby achieving reverse blowing cleaning of the filter assembly 300 and other internal components.

[0210] It should be noted that by setting up a fan assembly 200 with switchable first air duct 201 and second air duct 202, and forming corresponding first airflow channel 101 and second airflow channel 102 on the filter assembly 300, the airflow path is optimized for both suction and self-cleaning modes. In suction mode, the airflow enters the fan according to the filter channel, ensuring normal suction and filtration efficiency. In blowing mode, the self-cleaning airflow does not rely on the original suction path, but instead blows in the opposite direction to the filter assembly 300 through the specially designed second air duct 202 and second airflow channel 102. This allows the airflow to impact the filter assembly 300 with a larger flow rate, a more suitable angle, and a faster speed, resulting in better self-cleaning effect and higher self-cleaning efficiency.

[0211] Furthermore, this dual-channel, switchable design avoids the inefficiencies, high resistance, or poor cleaning results that can occur when using a single channel for forward and reverse blowing and suction. Self-cleaning via airflow can be completed quickly without disassembling the filter assembly 300, significantly improving the maintenance convenience of the cleaning device 10 and the user experience. Simultaneously, the independent airflow channel design also facilitates targeted cleaning of other hard-to-reach areas inside the cleaning device 10.

[0212] For example, the first airflow channel 101 is connected to the first air duct 201, together forming the suction airflow path within the housing 100. The second air duct 202 is connected to the second airflow channel 102, together forming the blowing airflow path within the housing 100. The switching between the two airflow paths can be achieved by the fan assembly 200.

[0213] The following describes the different paths the airflow takes through the filter assembly 300 in both suction and blowing modes.

[0214] Please continue to refer to Figures 1 to 9 In one possible implementation, the filter assembly 300 may include a first filter unit 310 and a dust-air separation structure 320. The first filter unit 310 is used for preliminary filtration of the airflow. The dust-air separation structure 320 is connected to the fan assembly 200 and is used to separate dust from the airflow using principles such as centrifugal force.

[0215] In the suction mode, the first airflow channel 101 is open, and the airflow path is as follows: the suction airflow first passes through the first filter unit 310 (for preliminary filtration), then through the dust-air separation structure 320 (for centrifugal separation), and finally flows to the fan assembly 200. In the blowing mode, the second airflow channel 102 is open, and the self-cleaning airflow path is as follows: the airflow is blown out from the fan assembly 200, first passes through the dust-air separation structure 320 (for reverse blowing), then passes through the first filter unit 310 (for reverse blowing), and finally is discharged or flows to the dust collection area.

[0216] For example, the first filtration unit 310 may be a metal filter. The dust-gas separation structure 320 may be a cyclone separator.

[0217] Understandably, by designing the filter assembly 300 as the first filter unit 310 and the dust-gas separation structure 320, and correspondingly designing different airflow sequences for suction and blowing states, a graded, reversible filtration and self-cleaning system is achieved. During suction, the airflow first undergoes coarse filtration and then fine separation, which helps protect the downstream dust-gas separation structure 320 or fan assembly 200. During self-cleaning during blowing, the airflow reverses direction, first blowing the dust-gas separation structure 320 and then the first filter unit 310. This sequence allows dust blown off the dust-gas separation structure 320 to be directly carried to the first filter unit 310 and finally discharged, preventing the blown-off dust from re-contaminating the already cleaned area.

[0218] It should be noted that the reverse self-cleaning airflow can wash away the dust clogging the pores on the surface of the first filter unit 310, restoring its breathability. This design makes the self-cleaning process more thorough and efficient, capable of cleaning both stages of the filter assembly 300 simultaneously.

[0219] In some embodiments, the first filter unit 310 and the dust-gas separation structure 320 are arranged along the length of the housing 100, that is, they can be arranged vertically. The first airflow channel 101 and the second airflow channel 102 have partially overlapping paths in structure, that is, the two airflow channels are not completely independent, but share part of the pipeline or cavity.

[0220] For example, the housing 100 is an elongated cylinder with its length in the axial direction. The first filter unit 310 and the dust-gas separation structure 320 are installed sequentially along the axial direction.

[0221] It is understandable that by arranging the first filter unit 310 and the dust-air separation structure 320 along the length of the housing 100, the axial layout of the filter assembly 300 is achieved, which is beneficial for designing the entire cleaning device 10 as a slender rod or column shape, making it easy to hold and use.

[0222] It should be noted that the partial overlap of the first airflow channel 101 and the second airflow channel 102 simplifies the internal air duct structure of the housing 100, reduces the number and weight of parts, and improves space utilization. The overlapping portion can be a common air inlet chamber, air outlet chamber, or connecting pipe. Although there is partial overlap, the direction of airflow in the overlapping section can be controlled or different branches can be selectively connected by switching devices (such as valves or baffles), ensuring that the airflow in suction and blowing states flows along a predetermined path without interference. This design achieves structural simplification and miniaturization while maintaining functional integrity.

[0223] The following example illustrates the main overlapping areas of the first airflow channel 101 and the second airflow channel 102.

[0224] Please continue to refer to Figures 1 to 9 In some embodiments, the filter assembly 300 may further include a ventilation bracket 330, which connects the first filter unit 310 and the dust-air separation structure 320, serving as a bridge and support. Both the first airflow channel 101 and the second airflow channel 102 can pass through this ventilation bracket 330 in their airflow paths, meaning that the ventilation bracket 330 is a shared component of the two airflow channels.

[0225] For example, the ventilation bracket 330 is a hollow connecting structure, with its two ends connected to the first filter unit 310 and the dust-gas separation structure 320, respectively. In suction mode, airflow flows from the first filter unit 310 through the ventilation bracket 330 to the dust-gas separation structure 320; in blowing mode, after the airflow exits from the fan, it first passes through the dust-gas separation structure 320 and then flows from the ventilation bracket 330 to the first filter unit 310. The internal channel of the ventilation bracket 330 forms a shared section for the first airflow channel 101 and the second airflow channel 102.

[0226] It is understandable that by setting up a ventilation bracket 330 connecting the first filter unit 310 and the dust-gas separation structure 320, and by setting both the first airflow channel 101 and the second airflow channel 102 to pass through this ventilation bracket 330, a stable connection between the two filter units and partial overlap of the airflow channels are achieved. As a structural component, the ventilation bracket 330 can precisely position the first filter unit 310 and the dust-gas separation structure 320, ensuring their coaxiality and sealing.

[0227] It should be noted that the internal channel of the ventilation bracket 330 is designed as a common passage for two airflow channels, simplifying the air duct design inside the housing 100 and avoiding complex independent pipelines. This modular design makes the assembly of the filter assembly 300 more convenient, allowing it to be pre-assembled as a whole before being installed into the housing 100, thus improving the manufacturability and reliability of the product.

[0228] In some embodiments, the first filter unit 310 has a fixed end and a free end at its two ends along its length. The fixed end is connected to the ventilation bracket 330 via a flexible joint 340. The flexible joint 340 is configured to allow the first filter unit 310 to vibrate or shake relative to the ventilation bracket 330. The free end is not rigidly fixed and can move freely.

[0229] For example, the flexible joint 340 may be a rubber tube, silicone tube, spring, or flexible diaphragm, etc.

[0230] For example, the first filter unit 310 can be a cylindrical filter screen with a fixed top end, which is sealed to the ventilation bracket 330 via an annular rubber tube. The bottom of the cylindrical filter screen is a free end. When there is an airflow impact, the cylindrical filter screen can sway or vibrate within the allowable range of the flexible joint 340.

[0231] For example, the flexible joint 340 is bonded or coated with adhesive to fix the ventilation bracket 330. While ensuring the reliability of the connection between the flexible joint 340 and the ventilation bracket 330, no other connecting parts are required, the structure is simple, space is reduced, and costs are lowered.

[0232] For example, the lower end of the flexible joint 340 is sleeved on the outer side of the upper end of the first filter unit 310, thereby improving the convenience of connecting and assembling the two. In addition, when the first filter unit 310 shakes, interference between the first filter unit 310 and the ventilation bracket 330 can be avoided.

[0233] Understandably, a flexible suspension installation method is achieved by connecting the fixed end of the first filter unit 310 to the ventilation bracket 330 via a flexible joint 340, and allowing its free end to move. This design enables the first filter unit 310 to vibrate when subjected to airflow impact (especially in the blowing self-cleaning mode) or external mechanical excitation (such as knocking or vibration). The vibration helps to shake off dust particles attached to the filter surface, thereby enhancing the self-cleaning effect.

[0234] It should be noted that, compared to a rigid fixation, the flexible joint 340 allows the filter to respond freely to vibration, amplifying the amplitude and improving cleaning efficiency. Simultaneously, the flexible joint 340 also serves as a seal, preventing airflow leakage at the connection point. This design transforms the first filter unit 310 from a completely static unit into part of a dynamic self-cleaning system, combining mechanical structure with fluid dynamics to assist airflow cleaning and shake off dust.

[0235] In this embodiment, the dust-collecting airflow in the suction state and the self-cleaning airflow in the blowing state flow through the dust-gas separation structure 320 via different paths. The following is an example illustration based on the specific structure of the dust-gas separation structure 320.

[0236] In some embodiments, the dust-air separation structure 320 has a dust collection chamber 321 for collecting dust separated from the airflow. The dust collection chamber 321 is provided with an opening 321a that can be opened or closed, the opening 321a being configured to control the opening and closing of the second airflow passage 102.

[0237] When the opening 321a is open, the second airflow channel 102 (the self-cleaning airflow path in the blowing state) is opened, allowing the self-cleaning airflow to pass through; when the opening 321a is closed, the second airflow channel 102 is not opened, that is, it is blocked.

[0238] Understandably, by setting an openable or closable opening 321a and associating it with the on / off state of the second airflow channel 102, precise control of the self-cleaning airflow is achieved. In suction mode, opening 321a is closed, ensuring the sealing of the dust collection chamber 321 and preventing dust leakage. Simultaneously, the second airflow channel 102 is not open, avoiding airflow short-circuiting and ensuring the integrity of the suction path. In blowing self-cleaning mode, opening 321a is open, providing a dedicated, low-resistance channel for the self-cleaning airflow, allowing it to directly enter the dust collection chamber 321 and efficiently blow or lift the collected dust for collection into other dust collection containers.

[0239] It should be noted that the openable and closable opening 321a design makes the self-cleaning process more targeted and efficient. The opening 321a can serve as a dust exhaust outlet, avoiding energy loss and incomplete cleaning caused by the reverse airflow having to pass through a complex separation structure.

[0240] In some embodiments, the dust-air separation structure 320 includes a cylindrical body 322, a cyclone guide section 323, and a ventilation duct 324. The cylindrical body 322 forms a dust collection chamber 321, and the aforementioned openable or closable opening 321a is located at the end of the cylindrical body 322 facing the first filter unit 310. The end of the cylindrical body 322 away from the first filter unit 310 is provided with an opening 321b. The ventilation duct 324 is disposed in this opening 321b.

[0241] The cyclone guide section 323 is located between the inner wall of the cylinder 322 and the outer wall of the ventilation pipe 324. When the second airflow channel 102 is not open (i.e., in suction mode), the path of the first airflow channel 101 is as follows: the suction airflow first flows out from the first filter unit 310, then flows from the outside of the cylinder 322, i.e., the gap between the cylinder 322 and the housing 100, to the opening 321b at the end of the cylinder 322, then enters the interior of the cylinder 322, rotates after passing through the cyclone guide section 323, and finally flows to the ventilation pipe 324, thereby flowing to the fan assembly 200. When the second airflow channel 102 is open (i.e., in blowing mode), the path of the second airflow channel 102 is as follows: the self-cleaning airflow enters the interior of the cylinder 322 from the ventilation pipe 324, then passes through the dust collection chamber 321, and finally flows out from the opening 321a at the end of the cylinder 322, flowing to the first filter unit 310.

[0242] Understandably, by designing different airflow paths inside and outside the dust-air separation structure 320 under suction and blowing conditions, a highly efficient and separated airflow path scheme is achieved. In suction mode, the airflow flows past the outside of the cylinder 322, avoiding direct impact on the dust accumulation inside the dust collection chamber 321, ensuring separation efficiency. Simultaneously, the airflow rotates after passing through the cyclone guide 323, achieving centrifugal separation of the dust. In self-cleaning blowing mode, the airflow flows in the opposite direction, directly entering the interior of the cylinder 322 from the ventilation pipe 324 and exiting through the opening 321a. This path allows the reverse airflow to powerfully flush the inner wall of the cylinder 322, the cyclone guide 323, and the dust collection chamber 321, effectively blowing away the attached and accumulated dust.

[0243] It should be noted that the two paths in the dust-gas separation structure 320 are selected by the opening and closing of the opening 321a, without interfering with each other, and each achieves low-resistance flow to ensure smooth airflow.

[0244] In some embodiments, the cyclone guide section 323 may include a plurality of helical blades 3231. These helical blades 3231 are spaced apart on the outside of the ventilation duct 324 and extend in a helical shape, that is, they are threaded around the ventilation duct 324.

[0245] Multiple spiral guide channels are formed between the multiple spiral blades 3231. These guide channels are constructed to guide the suction airflow downward along the spiral path, i.e., spiral downward.

[0246] For example, three, four, or more spiral blades 3231 are evenly distributed on the outer wall of the ventilation duct 324, each blade spirally extending from one end of the ventilation duct 324 to the other. Spiral grooves are formed between adjacent spiral blades 3231 as flow channels. The number of flow channels can be two, three, four, five, six, etc., and this embodiment does not specifically limit this. When the suction airflow enters from the opening 321b of the cylinder 322, it is guided by the blades and rotates forward along these spiral channels, generating centrifugal force.

[0247] Understandably, by employing multiple spaced and spirally extending helical blades 3231 to construct the cyclone guide section 323, a simple and efficient centrifugal separation guiding structure is achieved. The guide channel formed by the helical blades 3231 forces the airflow to begin rotating immediately upon entering the cylinder 322 and maintain a spiral motion, thereby generating sufficient centrifugal force within a short axial distance to throw dust particles toward the cylinder wall. Multiple blades provide multiple parallel channels, increasing the flow area, reducing resistance, and ensuring airflow uniformity. The spacing between the blades also makes the rotating airflow smoother and reduces turbulence.

[0248] It should be noted that the number, angle and height of the spiral blades 3231 can be designed and adjusted to optimize separation efficiency and pressure drop, and adapt to the needs of different cleaning equipment 10. This application embodiment does not specifically limit this.

[0249] In some embodiments, a first valve 325 is provided at the opening 321a. The first valve 325 is configured to open and close automatically according to the air pressure direction of the airflow.

[0250] Specifically, under the pressure of the suction airflow, the first valve 325 closes, thereby sealing the opening 321a; under the pressure of the self-cleaning airflow, the first valve 325 opens, thereby opening the opening 321a. Furthermore, when no airflow passes through, the initial state of the first valve 325 can be a closed opening 321a to ensure that the dust stored in the dust collection chamber 321 does not leak out.

[0251] For example, a flexible rubber or silicone baffle is installed at the opening 321a as a first valve 325. One end of the baffle is fixed, and the other end is free. In its natural state, the baffle covers and closes the opening 321a. In suction mode, the forward airflow flows from the outside to the inside of the opening 321a, and the air pressure presses the baffle against the edge of the opening 321a, thus closing it. In blowing mode, the reverse airflow flows from the inside to the outside of the opening 321a, and the air pressure blows the baffle open, thus opening it.

[0252] Understandably, by setting a first valve 325 controlled by wind pressure at the opening 321a, a simple, non-powered, and highly responsive automatic valve is achieved. This valve opens and closes based on the pressure of the airflow itself, synchronized with both suction and blowing states. In suction mode, the valve automatically closes, ensuring the sealing of the dust collection chamber 321, preventing leakage of separated dust, and also ensuring the normal path of the suction airflow. In self-cleaning blowing mode, the valve automatically opens, providing a channel for reverse airflow, allowing the self-cleaning airflow to enter the dust collection chamber 321 for cleaning.

[0253] In this embodiment, the suction airflow in the suction state and the self-cleaning airflow in the blowing state flow through the first filter unit 310 via different paths. The following is an example illustration based on the specific structure of the first filter unit 310.

[0254] In some embodiments, the first filter unit 310 is configured as an annular shape. The first filter unit 310 has a filter surface 311 and a vent 312, and the filter surface 311 and the vent 312 do not overlap.

[0255] A second valve 313 is provided at the vent 312. In the suction state, the second valve 313 closes the vent 312, preventing airflow from passing through the vent 312 and allowing it to pass through the filter surface 311, flowing from the outside to the inside of the first filter unit 310. In the blowing state, the second valve 313 opens the vent 312, allowing airflow to flow from the inside to the outside of the first filter unit 310 through the vent 312.

[0256] For example, the first filter unit 310 can be a cylindrical metal filter screen, with its cylindrical wall serving as the filter surface 311. A through-hole is formed in the top support of the metal filter screen or in a portion of its side surface as a vent 312. A rubber or silicone baffle is installed on the vent 312 as a second valve 313. During suction, the valve closes, and airflow passes through the filter screen cylindrical wall into the interior; during blowing, the valve opens, and reverse airflow is blown directly out from the interior through the vent 312 at the bottom.

[0257] Understandably, by setting non-overlapping filter surfaces 311 and vents 312 on the first filter unit 310 and configuring a switchable second valve 313, the airflow path separation and optimization in the two states are achieved. In the suction state, the second valve 313 is closed, forcing all airflow to pass through the filter surface 311, ensuring the filtration effect and preventing untreated air from short-circuiting through the vent 312. At the same time, the airflow passes through the filter screen from the outside to the inside, and dust is intercepted on the outside. In the blowing self-cleaning state, the second valve 313 is open, providing a low-resistance reverse airflow channel, so that the reverse airflow no longer needs to pass through the filter surface 311, but can be blown out directly through the vent 312, blowing off the dust attached to the filter surface 311 in the opposite direction.

[0258] It should be noted that this design prevents the self-cleaning airflow from re-passing through the clogged filter surface 311, greatly improving cleaning efficiency and reducing energy consumption. At the same time, the reverse airflow direction is opposite to that of the suction flow, helping to blow away dust adhering to the outer surface of the filter, significantly enhancing the cleaning effect.

[0259] In some embodiments, a third valve 314 is provided inside the first filter unit 310. The third valve 314 is located on the side of the vent 312 away from the dust-gas separation structure 320.

[0260] The function of the third valve 314 is to open the ventilation section inside the first filter unit 310 in the suction state (i.e., allow the suction airflow to pass through); and to block the ventilation section inside the first filter unit 310 in the blowing state (i.e., block the self-cleaning airflow from passing through).

[0261] For example, the first filter unit 310 can be a cylindrical metal filter screen with a reversible valve plate or rubber baffle at its inner center as a third valve 314. During suction, the third valve 314 flips upward and opens under the action of airflow, thereby opening the channel inside the filter screen, allowing airflow to pass upward through the dust-air separation structure 320 from the inner cavity of the filter screen. During blowing, the reverse airflow pushes the third valve 314 to its initial reset position, causing it to contact a step inside the filter screen, thereby blocking the main ventilation section inside the filter screen and forcing airflow to flow out only from the vent 312.

[0262] Understandably, by setting a third valve 314 inside the first filter unit 310, and opening the inner channel during suction and closing the inner channel during blowing, further precise control of the airflow path inside the filter is achieved. During suction, the third valve 314 opens, allowing clean air passing through the filter surface 311 to smoothly gather and flow to the fan through the vent 312, ensuring normal filtration function. During self-cleaning during blowing, the third valve 314 closes, blocking the main ventilation section inside the filter, thereby blocking the path of reverse airflow from inside the filter through the filter surface 311. This forces all reverse airflow to flow out only through the specially designed vent 312, increasing the pressure and velocity of the airflow from the vent 312, enabling it to more effectively reverse-blow the filter surface 311 and blow dust off the outside of the filter.

[0263] It should be noted that this design concentrates the self-cleaning airflow to the most needed areas, avoiding airflow dispersion and significantly improving the efficiency and effectiveness of self-cleaning. The third valve 314 works in conjunction with the second valve 313 to form a complete and efficient reverse cleaning air path control system.

[0264] In some embodiments, the second valve 313 is configured to close the vent 312 under the pressure of the suction airflow (forward airflow) and open the vent 312 under the pressure of the self-cleaning airflow (reverse airflow). The third valve 314 is configured to open the ventilation section inside the first filter unit 310 under the pressure of the suction airflow and block the ventilation section inside the first filter unit 310 under the pressure of the self-cleaning airflow.

[0265] Understandably, both the second valve 313 and the third valve 314 are designed to open automatically under airflow pressure control. Furthermore, when there is no airflow, the second valve 313 and the third valve 314 can be reset using their own elasticity or gravity, enabling automatic switching of the dual-channel system of this application. No additional motors, electromagnets, or control circuits are required; the opening and closing of the valves and the switching of the airflow path are accomplished solely by the airflow pressure generated by the cleaning device 10 itself during suction and blowing.

[0266] It should be noted that when the user switches the working mode of the cleaning device 10, the airflow direction changes accordingly. The second valve 313 and the third valve 314 can respond automatically and quickly complete the path switching, making the transition between the vacuuming and self-cleaning modes very rapid and smooth, resulting in a good user experience. At the same time, since there are no additional moving parts and electrical connections, the failure rate is low and it is not affected by dust, debris, or moisture in the airflow.

[0267] In some embodiments, the second valve 313 and the third valve 314 are both disposed at the end of the first filter unit 310 near the dust-gas separation structure 320, that is, both are located in the end region of the first filter unit 310 adjacent to the dust-gas separation structure 320.

[0268] The second valve 313 is located on the side wall of the first filter unit 310, while the third valve 314 is located below the second valve 313. "Below" refers to a position closer to or downstream of the first filter unit 310, according to the direction of normal operation of the cleaning equipment 10, or the direction of airflow from the dust-air separation structure 320 to the first filter unit 310.

[0269] Understandably, by arranging both the second valve 313 and the third valve 314 at one end of the first filter unit 310 near the dust-gas separation structure 320, and placing the second valve 313 on the side wall and the third valve 314 below, a compact and hierarchical valve layout is achieved, optimizing the flow channel, reducing eddies and resistance, and making the valve response more sensitive.

[0270] In some embodiments, the vents 312 are configured as a plurality of vents. These plurality of vents 312 are arranged circumferentially around the first filter unit 310. Each vent 312 is provided with a second valve 313, that is, each vent 312 is controlled to open and close by an independent second valve 313.

[0271] For example, multiple vents 312 can be evenly distributed on the circumference of the first filter unit 310.

[0272] For example, the first filter unit 310 can be a cylindrical metal filter screen, with three, four, or more through holes evenly distributed along its circumference on the side of the filter screen at the top or on the support at the top, serving as vents 312. Each vent 312 has a silicone or rubber baffle installed on its outer side as a second valve 313, which can be opened and closed independently under airflow pressure. When the self-cleaning airflow blows from the inside to the outside, the baffle folds outward, thereby opening the vent 312.

[0273] Understandably, by setting multiple vents 312 arranged circumferentially, reverse airflow can be blown out simultaneously and evenly from multiple directions around the filter during self-cleaning. Compared to a single vent 312, multiple vents 312 can significantly increase the total ventilation area, reduce airflow resistance, and make the self-cleaning airflow smoother and the cleaning range wider.

[0274] It should be noted that the circumferentially spaced arrangement of multiple vents 312 ensures that airflow is evenly distributed across the entire circumference of the filter surface 311, avoiding cleaning dead zones. Each vent 312 is equipped with an independent valve, ensuring that all vents 312 can be reliably closed during suction, preventing unfiltered air from short-circuiting. This porous design improves the coverage and efficiency of self-cleaning, making the self-cleaning process faster and more thorough.

[0275] In this embodiment, the fan assembly 200 can switch air ducts to achieve different flow directions of the dust suction airflow and the self-cleaning airflow. The structure of the fan assembly 200 and the air duct switching structure are described in detail below.

[0276] Please refer to Figures 2 to 13 In some embodiments, the fan assembly 200 includes a first fan 210 and a switching mechanism 220. The first fan 210 has an air inlet and an air outlet. The housing 100 is provided with a ventilation hole 103, which is a through hole for the cleaning device 10 to communicate with the outside atmosphere.

[0277] The switching mechanism 220 is configured to change the connection relationship between the first fan 210, the filter assembly 300, and the ventilation hole 103. In suction mode, the switching mechanism 220 connects the air inlet of the first fan 210 to the filter assembly 300, and simultaneously connects the air outlet of the first fan 210 to the ventilation hole 103 on the housing 100, thus forming the first air duct 201, i.e., the dust suction air duct. In blowing mode, the switching mechanism 220 connects the air inlet of the first fan 210 to the ventilation hole 103, and simultaneously connects the air outlet of the first fan 210 to the filter assembly 300, thus forming the second air duct 202, i.e., the self-cleaning air duct.

[0278] It is understandable that by setting up the first fan 210 and the switching mechanism 220, and by using the switching mechanism 220 to change the connection direction between the first fan 210 and the filter assembly 300 and the ventilation hole 103, the first fan 210 can perform both dust collection and self-cleaning functions.

[0279] It should be noted that the design with a switching structure significantly reduces cost, weight, and size compared to using two independent fans. The switching mechanism 220 can be manual (e.g., a lever) or electric (e.g., a motor-driven valve), providing flexible control. When self-cleaning is required, simply operate the switching mechanism 220 to change the connection between the first fan 210 and the airflow path. The rotation direction of the first fan 210 itself can remain unchanged, thus generating a reverse airflow. This avoids the lifespan and noise problems that may result from frequent forward and reverse rotation of the fan.

[0280] In some embodiments, the switching mechanism 220 may include a duct support frame 221 and a rotating member 222 disposed inside the duct support frame 221. The switching mechanism 220 has a first channel 220a and a second channel 220b. The first channel 220a is connected to the air inlet of the first fan 210, and the second channel 220b is connected to the air outlet of the first fan 210.

[0281] The rotating component 222 has two working positions: a first position and a second position. When the rotating component 222 is in the first position, the first channel 220a is connected to the filter assembly 300, and the second channel 220b is connected to the ventilation hole 103 on the housing 100. When the rotating component 222 is in the second position, the first channel 220a is connected to the ventilation hole 103, and the second channel 220b is connected to the filter assembly 300.

[0282] Understandably, the rotary switching mechanism 220, composed of the duct support frame 221 and the rotating component 222, achieves a compact, well-sealed, and reliable flow channel switching solution. The rotation of the rotating component 222 can precisely change the connection relationship of the internal channels, realizing the switching between suction and blowing modes. Compared with the slide valve, it has better sealing performance and lower fluid resistance.

[0283] It should be noted that the duct support frame 221 can integrate the complex internal duct into a single module, facilitating assembly and maintenance. The rotary switching mechanism 220 cross-connects the two ports of the first fan 210 with the filter assembly 300 and the ventilation hole 103, allowing the first fan 210 to change the airflow direction relative to the filter assembly 300 by simply switching the position of the rotating part 222 once, thus achieving a highly efficient self-cleaning function.

[0284] For example, the rotating member 222 forms a first channel 220a. The first channel 220a may be located at the middle position of the rotating member 222.

[0285] For example, the rotating member 222 forms a second channel 220b, or the rotating member 222 cooperates with the air duct support frame 221 to form a second channel 220b. The second channel 220b is located outside the first channel 220a, and as the rotating member 222 rotates, the second channel 220b can rotate to different positions.

[0286] In some embodiments, the switching mechanism 220 further includes a drive unit 223, which may be a motor. The output end of the drive unit 223 is connected to the rotating member 222, thereby driving the rotating member 222 to rotate between a first position and a second position.

[0287] For example, the rotating member 222 rotates by an angle of 180° between the first position and the second position.

[0288] It is understandable that the drive unit 223 can be a motor, and the output shaft of the motor can be coaxially connected with the rotating part 222, thereby enabling the rotating part 222 to switch quickly and accurately between two positions.

[0289] In some embodiments, the air inlet end of the first fan 210 faces the filter assembly 300. A rotating member 222 is rotatably disposed at the air inlet end. A first channel 220a is opposite to the air inlet end along the axial direction of the first fan 210. A second channel 220b is located outside (i.e., radially outside) the first channel 220a. Airflow discharged from the air outlet end of the first fan 210 can flow through the outer side of the first fan 210 to the second channel 220b.

[0290] For example, the rotating component 222 and the first fan 210 can be mounted on the same axis.

[0291] Understandably, by orienting the air inlet of the first fan 210 toward the filter assembly 300 and positioning the rotating component 222 at the air inlet, a shorter air inlet channel is achieved, reducing resistance during air intake. Positioning the first channel 220a axially opposite the air inlet ensures unobstructed airflow during intake; the second channel 220b is positioned radially outward, utilizing the space surrounding the fan. Airflow at the outlet flows through the outer side of the first fan 210 to the second channel 220b, thus utilizing the fan assembly 200's own structure as part of the flow channel, eliminating the need for additional complex piping.

[0292] It should be noted that the compact radial and axial arrangement of the rotating component 222 and the first fan 210 in this embodiment makes full use of the limited space, thereby controlling the radial dimensions of the entire first fan 210 and switching mechanism 220. This design reflects the integrated utilization of the internal and external space of the fan assembly 200, which helps to achieve miniaturization of the cleaning equipment 10.

[0293] As an optional implementation, the fan assembly 200 may further include a fan shroud 230, which is disposed outside the first fan 210, with a gap between the outer wall of the first fan 210 and the inner wall of the fan shroud 230. The airflow from the outlet end of the first fan 210 flows through this gap to the second channel 220b, thereby ensuring the installation reliability and stability of the first fan 210 and providing space for airflow.

[0294] In some embodiments, the fan assembly 200 may further include a fan cover 240, which is connected to the top of the fan shroud 230 and is positioned at the air outlet so that the airflow from the first fan 210 is redirected to enter the gap.

[0295] Understandably, the top of the fan cover 240 and the fan shroud 230 can be sealed together with a rubber ring, thus achieving a good sealing effect. The fan cover 240 can guide the airflow to change direction, allowing the airflow to flow smoothly to the second channel 220b.

[0296] In some embodiments, the switching mechanism 220 may further include a bushing 224, a bearing 225 is provided on the rotating member 222, the bushing 224 is sleeved on the output end of the drive unit 223, and the bushing 224 is inserted into the bearing 225.

[0297] Understandably, the fit between bushing 224 and bearing 225 can improve the reliability of the connection between rotating component 222 and the output shaft of drive unit 223, and avoid relative rotation between the two causing positional deviation of rotating component 222.

[0298] It should be noted that the switching mechanism 220 may also include a motor bracket 226, which is located at the end of the rotating component 222 away from the first fan 210, and is connected to the duct support frame 221. The drive unit 223 is located on the motor bracket 226. The components of the switching mechanism 220 can be assembled into a single module, improving the convenience of production assembly and reducing costs.

[0299] In some embodiments, the duct support frame 221 may include a mounting sleeve 2211 and a mounting plate 2212. The mounting plate 2212 is connected inside the mounting sleeve 2211, and the rotating member 222 is rotatably accommodated within the space enclosed by the mounting sleeve 2211 and the mounting plate 2212. A first through hole 2213 is provided on the side wall of the mounting sleeve 2211, which is opposite to and communicates with the ventilation hole 103 on the housing 100 for connecting to the external atmosphere.

[0300] The mounting plate 2212 is provided with a suction port 2214 and a blowing port 2215, which are used to communicate with the filter assembly 300 in suction and blowing modes, respectively. The rotating member 222 is configured to open one of the suction port 2214 and the blowing port 2215 and communicate with the first filter unit 310, while closing the other.

[0301] For example, the mounting sleeve 2211 can be a cylindrical structure with side holes on its sidewalls serving as a first through hole 2213. The mounting plate 2212 seals the radial section of the cylindrical structure and has two fan-shaped holes to form a suction port 2214 and a blowing port 2215. The bottom of the rotating member 222 is a turntable structure with corresponding through holes. When the rotating member 222 rotates to the first position, the suction port 2214 opens and the blowing port 2215 is blocked; when it rotates to the second position, the blowing port 2215 opens and the suction port 2214 is blocked.

[0302] Understandably, by setting up a duct support frame 221 with a mounting sleeve 2211 and a mounting plate 2212, and setting a suction port 2214 and a blowing port 2215 on the mounting plate 2212, one of the suction port 2214 and the blowing port 2215 can be selectively connected to the first channel 220a or the second channel 220b above by simply rotating the rotating member 222, thereby controlling whether the airflow goes through the suction path or the blowing path.

[0303] It should be noted that the modularly designed duct support frame 221 and rotating component 222 integrate guiding, sealing and switching functions, which makes the airflow connection and switching between the fan assembly 200, the switching mechanism 220 and the filter assembly 300 smooth and compact.

[0304] In some embodiments, the rotating member 222 has a first air inlet channel 2221 and a second air inlet channel 2222. The first air inlet channel 2221 has a second through hole 2223 at its bottom, a third through hole 2224 at its top, and a fourth through hole 2225 on its side. The second air inlet channel 2222 is located to the side of the first air inlet channel 2221 and is connected to the first air inlet channel 2221 through the fourth through hole 2225. A fifth through hole 2226 is provided on the side of the second air inlet channel 2222 away from the fourth through hole 2225. The bottom of the rotating member 222 is disposed opposite to the mounting plate 2212.

[0305] The first air inlet channel 2221 and the second air inlet channel 2222 work together to form the first channel 220a, which is connected to the air inlet end.

[0306] The outer wall of the first air inlet channel 2221 on the side away from the second air inlet channel 2222, together with the air duct support frame 221, forms the second channel 220b, which is connected to the air outlet. The second channel 220b is located on the side of the first air inlet channel 2221 away from the second air inlet channel 2222.

[0307] For example, the outer wall 2227 of the first air inlet channel 2221 on the side away from the second air inlet channel 2222, together with the air duct support frame 221, forms the second channel 220b.

[0308] It is understandable that by setting a first air inlet channel 2221 and a second air inlet channel 2222 on the rotating component 222, and cooperating with the air duct support frame 221 to form a first channel 220a and a second channel 220b, a compact integrated flow channel structure is achieved. The channels inside the rotating component 222 connect the openings 321a (top, bottom, and side) in different directions, allowing the airflow to be redirected within a narrow space.

[0309] It should be noted that the first channel 220a connects the air intake of the first fan 210 with either the filter assembly 300 or the ventilation hole 103 through the internal path of the rotating component 222; the second channel 220b utilizes the gap between the outer wall of the rotating component 222 and the support frame to form the air outlet path of the first fan 210. This combined internal and external channel design greatly improves space utilization.

[0310] Please refer to Figures 14 to 16 In some embodiments, a guide rib 2228 is provided on the side of the first air inlet channel 2221 away from the second air inlet channel 2222, and a second channel 220b is formed between the guide rib 2228 and the outer wall 2227 of the first air inlet channel 2221 away from the second air inlet channel 2222.

[0311] Understandably, the outline shape of the guide rib 2228 can match the inner wall outline shape of the air duct support frame 221. The guide rib 2228 can provide guidance for the rotation of the rotating component 222, making the rotation process of the rotating component 222 more stable.

[0312] For example, the guide rib 2228 may be lower than the height of the outer wall 2227, so that when the rotating member 222 is in the second position, the outer side of the second channel 220b may be connected to the ventilation hole 103.

[0313] For example, the air duct support frame 221 can be a cylindrical structure, and the guide rib 2228 can be arc-shaped.

[0314] In some embodiments, the third through hole 2224 is always connected to the air inlet of the first fan 210. The top of the second channel 220b is always connected to the air outlet of the first fan 210.

[0315] When the rotating part 222 is in the first position (suction state): the second through hole 2223 is aligned with and connected to the dust suction port 2214 on the mounting plate 2212; the bottom solid part of the rotating part 222 closes the dust blowing port 2215; the second air inlet channel 2222 is located on the side of the first air inlet channel 2221 away from the ventilation hole 103, that is, the fifth through hole 2226 and is closed by the inner wall of the air duct support frame 221, so it cannot be ventilated; the second channel 220b (the annular gap between the outer wall of the rotating part 222 and the support frame) is directly opposite to the ventilation hole 103 on the housing 100, forming a passage.

[0316] When the rotating part 222 is in the second position (blowing state): the solid part on the mounting plate 2212 closes the second through hole 2223; the second air inlet channel 2222 is directly opposite to and connected to the ventilation hole 103 on the housing 100, that is, the fifth through hole 2226 is directly opposite to and connected to the ventilation hole 103 on the housing 100; the solid part at the bottom of the rotating part 222 closes the dust suction port 2214; the second channel 220b is connected to the dust blowing port 2215 on the mounting plate 2212.

[0317] Understandably, by designing the connectivity of each channel when the rotating component 222 is in two positions, a clear and leak-free airflow path switching is achieved.

[0318] In the suction state (first position), the airflow path is: filter component 300 → dust inlet 2214 → second through hole 2223 → first air inlet channel 2221 → third through hole 2224 → air inlet end of first fan 210; at the same time, the airflow at the air outlet end of the first fan 210 flows through the second channel 220b to the ventilation hole 103 and is discharged to the atmosphere.

[0319] In the blowing state (second position), the airflow path is: outside air → ventilation hole 103 → second air inlet channel 2222 → through the fourth through hole 2225 into the first air inlet channel 2221 → third through hole 2224 → air inlet end of the first fan 210; at the same time, the airflow at the air outlet end of the first fan 210 flows through the second channel 220b to the dust outlet 2215, and then flows to the filter assembly 300.

[0320] For example, the rotational stroke range of the rotating component 222 can be 180 degrees, with its two ends corresponding to the first position and the second position. The arc range of the second channel 220b along the rotational circumference can also be 180 degrees. The air outlet of the first fan 210 can be annular. In the first position, a portion of the air outlet of the first fan 210 is connected to the second channel 220b; in the second position, the other portion of the air outlet of the first fan 210 is connected to the second channel 220b. This avoids airflow diversion, reduces wind resistance, and minimizes the generation of vortices.

[0321] In this embodiment, the cleaning device 10 may further include a second filter unit 400. The second filter unit 400 is disposed in the airflow path between the filter assembly 300 and the fan assembly 200. In the suction state, the second filter unit 400 is located downstream of the filter assembly 300 and upstream of the fan assembly 200.

[0322] For example, the second filter unit 400 can be a HEPA filter (High-Efficiency Particulate Air). In suction mode, the airflow first passes through a cyclone separator for dust and air separation, then passes through the HEPA filter for fine filtration, and finally enters the fan assembly 200. In self-cleaning blowing mode, the airflow is blown out from the fan assembly 200, first passing through the second filter unit 400 (reverse blowing), and then blowing towards the filter assembly 300.

[0323] Understandably, by adding a second filter unit 400 between the filter assembly 300 and the fan assembly 200, secondary or fine filtration of the airflow is achieved. This staged filtration design effectively protects the fan assembly 200, preventing fine dust from entering the fan and affecting its lifespan and performance. Simultaneously, the second filter unit 400 can also be cleaned by the reverse airflow during the self-cleaning process, ensuring maintenance of the entire filtration system.

[0324] In blower mode, the self-cleaning airflow does not rely on the original suction path. Instead, it is directed in reverse through a specially designed second air duct 202 and second airflow channel 102 towards the second filter unit 400 (HEPA filter) and filter assembly 300. This allows the airflow to impact the second filter unit 400 (HEPA filter) and filter assembly 300 with a larger flow rate, a more suitable angle, and a faster speed, resulting in better self-cleaning performance and higher self-cleaning efficiency. Furthermore, the superior cleaning effect on the second filter unit 400 (HEPA filter) significantly reduces the frequency and number of times the user needs to clean it, and may even eliminate the need for cleaning altogether, greatly enhancing the user experience.

[0325] In some embodiments, the second filter unit 400 is configured as an annular shape, and the diameter of its end facing the fan assembly 200 is smaller than the size of its end facing the filter assembly 300. That is, the second filter unit 400 presents a horn or frustum shape, with the large end facing the filter assembly 300 and the small end facing the fan assembly 200.

[0326] The outer side of the second filter unit 400 is connected to the fan assembly 200. The inner side of the second filter unit 400 (i.e., the space inside the annular ring) is connected to the filter assembly 300.

[0327] Understandably, by designing the second filter unit 400 as annular with a variable cross-section, and connecting its outer side to the fan assembly 200 and its inner side to the filter assembly 300, a compact and efficient radial filtration structure is achieved. The frustoconical shape increases the filter surface area 311 while guiding the airflow to smoothly change direction. The outer gap serves as an air collection chamber, gathering the clean air passing through the filter unit to the fan inlet.

[0328] For example, the circumferential sidewall of the air duct support frame 221 can extend to the periphery of the second filter unit 400 and form a ventilation gap with the outer surface of the second filter unit 400, thereby limiting the second filter unit 400 and ensuring that the airflow passes through the second filter unit 400, preventing the airflow from leaking into the gaps in other areas of the housing 100.

[0329] It should be noted that this radial filtration method, which allows airflow to change from axial to radial when passing through the second filter unit 400, allows the reverse airflow to pass through the filter screen from the outer gap and enter the inner cavity during self-cleaning, thus performing reverse purging on the second filter unit 400, while simultaneously meeting the requirements of compactness and high-efficiency cleaning.

[0330] In some embodiments, the cleaning device 10 may further include a floor brush 500 connected to one end of the housing 100 along its length. The floor brush 500 has an air intake 501 for drawing in dust-laden air from the surface to be cleaned. The housing 100 includes a dust cup body with a dust storage chamber 105 for collecting separated dust.

[0331] The dust collection chamber 105 is equipped with an air inlet 104 that can be opened or closed. In suction mode, the air inlet 104 is open, connecting the air inlet 501 of the floor brush 500 with the dust collection chamber 105 of the dust cup body to form a dust collection passage. In blowing mode, the air inlet 104 is closed.

[0332] For example, the dust cup body is a plastic container with an air inlet at the bottom. This inlet has an air inlet 104 and a corresponding rubber baffle. The floor brush 500 can be connected to this inlet via a flexible hose or a rigid tube. During vacuuming, the rubber baffle opens, allowing airflow to enter the dust cup body from the floor brush 500; during self-cleaning, the rubber baffle closes to prevent reverse airflow from blowing out of the floor brush 500 and also to prevent dust from leaking from the end of the floor brush 500.

[0333] Understandably, by setting up an openable and closable air inlet 104, independent control of the airflow inlet is achieved in both vacuuming and self-cleaning modes. During vacuuming, the air inlet 104 is open, ensuring that the dust-laden air drawn in by the floor brush 500 can enter the dust cup for filtration. During self-cleaning, the air inlet 104 is closed to prevent reverse airflow from being ejected from the floor brush 500, thus preventing dust from being stirred up or posing a hazard.

[0334] The power supply settings and grip structure of the cleaning device 10 will be described below.

[0335] In some embodiments, the cleaning device 10 may further include a power supply assembly 600. The power supply assembly 600 is disposed inside the housing 100. Along the length of the housing 100, the power supply assembly 600 is located at the end of the fan assembly 200 opposite to the filter assembly 300.

[0336] For example, housing 100 is an elongated cylinder, inside which are arranged the following components in sequence: filter assembly 300 near the front end, floor brush 500, fan assembly 200 in the middle, and power supply assembly 600 near the rear end. The three are arranged in a straight line or approximately a straight line along the axial direction.

[0337] Understandably, by placing the power supply assembly 600 within the housing 100 and arranging it axially with the filter assembly 300 and the fan assembly 200, a high degree of integration and balance of the entire machine is achieved. This linear layout allows the cleaning device 10 to be designed in a long, stick-like shape, facilitating handheld operation and conforming to ergonomics. Placing the power supply assembly 600 behind the fan assembly 200 (away from the working head) allows its weight to balance the weight of the front brush 500 and the filter assembly 300, reducing strain on the user's wrist.

[0338] For example, a circuit board may also be provided inside the housing 100. The circuit board is electrically connected to the fan assembly 200 and the power supply assembly 600 for charging and discharging control and starting and stopping the fan assembly 200. The housing 100 may be provided with operation buttons for controlling the start or stop of the cleaning equipment 10. There may be multiple operation buttons, one of which may be used to control the airflow switching of the fan assembly 200. A screen may be provided on the housing 100. The screen may be a display screen for displaying the status information of the cleaning equipment 10, such as the current mode and speed, or it may be a touch screen, serving both control and information display functions.

[0339] It should be noted that the power supply unit 600 can be detachable or built-in and can be charged.

[0340] In some embodiments, one end of the housing 100 along its length, i.e., the end furthest from the floor brush 500, has a handle portion 110, which is a part for the user to grip. The power assembly 600 is disposed and housed inside this handle portion 110.

[0341] For example, the handle portion 110 is hollow inside for mounting a cylindrical battery pack or a module formed by multiple battery cells. When the user holds the handle, the palm wraps around the outer casing, and the battery pack is hidden inside.

[0342] Understandably, by incorporating the power supply unit 600 within the handle 110, a high degree of structural integration and further optimization of the center of gravity are achieved. Placing the heavier battery pack within the handle brings the overall center of gravity of the cleaning device 10 very close to the user's grip, making operation more effortless and flexible, and reducing wrist fatigue.

[0343] It should be noted that this design also allows for more flexible arrangement of the filter assembly 300 and the fan assembly 200. At the same time, this design makes full use of the internal space of the handle, eliminating the need for a separate protruding battery compartment, resulting in a cleaner appearance for the cleaning device 10.

[0344] Please refer to Figures 17 to 21 and combined Figures 4 to 9 This application provides a cleaning system, which includes a cleaning base station 20 and the cleaning equipment 10 described above.

[0345] The cleaning base station 20 includes a base station body 21 and a dust collection component 22 disposed within the base station body 21. When the cleaning device 10 is placed on the cleaning base station 20, the interior of the housing 100 of the cleaning device 10 is interconnected with the dust collection component 22 of the cleaning base station 20 via an air path. At this time, if the cleaning device 10 is switched to a blowing state, the airflow will flow through the second airflow channel 102 (i.e., the self-cleaning airflow channel) to the dust collection component 22 of the cleaning base station 20, thereby concentrating and transporting the dust collected inside the cleaning device 10 into the dust collection component 22.

[0346] For example, the dust collection component 22 can be a large-capacity dust collection bag or dust collection bucket.

[0347] For example, the cleaning base station 20 can be a vacuum cleaner charging dock that also serves as a dust collection station. When the vacuum cleaner is inserted into the charging dock, its dust outlet is sealed and connected to the dust inlet of the dust collection dock. When the user presses the self-cleaning button on the vacuum cleaner, the fan assembly 200 can switch to the blowing mode, and the reverse airflow blows the dust in the dust cup of the housing 100 into the large-capacity dust collection component 22 of the base station body 21.

[0348] For example, when the cleaning device 10 is placed on the cleaning base station 20, it can directly connect to the cleaning base station 20. Alternatively, after the cleaning device 10 is placed on the cleaning base station 20, it can connect to the cleaning base station 20 through user operation, such as activating the self-cleaning button.

[0349] Understandably, by combining the cleaning device 10 with dual-channel self-cleaning function with the cleaning base station 20 with a large-capacity dust collection component 22, a fully automatic dust collection and cleaning system is formed. Users do not need to manually open the dust cup to empty the dust; they only need to place the cleaning device 10 on the base station and start the blowing mode to automatically transfer the dust collected inside the device to the dust collection component 22 of the base station.

[0350] It should be noted that the cleaning system greatly improves the convenience and hygiene of maintenance, avoiding secondary pollution when dumping dust. The cleaning base station 20 can have a larger dust collection capacity, requiring multiple collections before needing to be cleaned, further reducing the maintenance burden on users.

[0351] The following is an example illustrating the docking structure between the cleaning device 10 and the cleaning base station 20.

[0352] In some embodiments, the housing 100 of the cleaning device 10 is provided with a dust collection port 106, which is an opening 321a for discharging dust. A door panel 120 is rotatably connected to the dust collection port 106 for normally closing the dust collection port 106.

[0353] The cleaning base station 20 is provided with a connecting hole 21a, which is used to connect with the dust collection port 106 of the cleaning device 10. The edge of the connecting hole 21a has a protrusion 21b facing the cleaning device 10. When the cleaning device 10 is placed on the cleaning base station 20, the protrusion 21b on the base station abuts against the inner side or edge of the upper door panel 120 of the cleaning device 10, thereby opening the door panel 120 and causing it to rotate around its pivot, automatically opening the dust collection port 106. In this way, the interior of the cleaning device 10 is connected to the base station through the connecting hole 21a via the dust collection port 106. When the cleaning device 10 is removed, the door panel 120 can automatically close under gravity or spring action.

[0354] For example, the protrusion 21b can be a wedge-shaped or hemispherical protrusion.

[0355] For example, the housing 100 of the cleaning device 10 has a dust collection port 106 of a square or circular shape on its side, which is normally closed by a door panel 120 with a torsion spring. The upper edge of the airflow inlet of the cleaning base station 20 has a protruding structure. When the cleaning device 10 is placed into the cleaning base station 20, the protruding structure uses a lever principle to push open the door panel 120, and the door panel 120 flips outward, so that the dust collection port 106 is opened.

[0356] Understandably, by setting up a rotatable door panel 120 and a protrusion 21b on the base station, a mechanical, passive, and automatic dust collection port 106 docking and opening mechanism is achieved. When the user places the cleaning equipment 10 on the base station, no additional operation is required; the protrusion 21b will automatically push open the door panel 120, connecting the dust collection port 106. This avoids the inconvenience of requiring the user to manually open the dust collection port 106, and also avoids the cost and malfunction risks associated with using electric valves.

[0357] It should be noted that when the cleaning device 10 leaves the base station, the door panel 120 automatically closes, restoring the seal and preventing accidental dust leakage. This easy-to-open and easy-to-close mechanism improves the user experience. Furthermore, the door panel 120 can be designed with a sealing ring to ensure airtightness when closed.

[0358] In this embodiment, when the cleaning base station 20 collects dust from the cleaning device 10, the airflow power source can be the fan assembly 200 on the cleaning device 10. Alternatively, the airflow power source can be an independent fan installed on the cleaning base station 20. Or, both the fan assembly 200 and the fan on the cleaning base station 20 can assist in the self-cleaning of the cleaning device 10. The self-cleaning operation method and airflow path of the fan assembly 200 on the cleaning device 10 have been described in the aforementioned cleaning device 10 scheme and will not be repeated here. The scheme of the independent fan installed on the cleaning base station 20 will be described in detail below.

[0359] In some embodiments, the cleaning base station 20 has a dust collection chamber 21c, and the aforementioned dust collection component 22 is disposed inside the dust collection chamber 21c. The cleaning base station 20 is also provided with a second fan 23. The second fan 23 has an air inlet 23a, which communicates with the internal space of the dust collection chamber 21c.

[0360] The function of the second fan 23 is to generate negative pressure, thereby forming an airflow from inside the housing 100 of the cleaning equipment 10 to the dust collection chamber 21c of the base station.

[0361] For example, the base of the rechargeable dust collection station contains a centrifugal fan, whose air inlet 104 is connected to the dust collection chamber 21c where the dust collection bag is placed through a grille or pipe. When the cleaning equipment 10 is placed on the cleaning base station 20 and the dust collection port 106 is opened, if the second fan 23 is started, it can create a negative pressure in the dust collection chamber 21c, sucking the dust in the dust cup of the cleaning equipment 10 into the dust collection bag.

[0362] Understandably, by installing an independent second fan 23 within the cleaning base station 20 and connecting it to the dust collection chamber 21c, a powerful and independent power source is provided for the entire dust collection process. Compared to relying solely on the cleaning device 10's own fan for blowing dust, the second fan 23 can generate greater suction, enabling it to more thoroughly and quickly extract dust from the cleaning device 10.

[0363] It should be noted that this dual-fan solution can achieve the effect of "blowing and suction combined", which greatly improves the dust collection efficiency, especially for large-capacity dust cups or dust with strong adhesion.

[0364] In addition, the second fan 23 on the cleaning base station 20 can also be used for other functions, such as drying the filter assembly 300.

[0365] The timing of switching the air duct of the fan assembly 200 of the cleaning equipment 10 can be implemented in different ways according to the embodiments of this application.

[0366] In the first approach, while the cleaning device 10 is docking with the cleaning base station 20 (e.g., when it is first placed), the fan assembly 200 of the cleaning device 10 automatically switches to the second air duct 202.

[0367] In the second method, after the cleaning device 10 and the cleaning base station 20 are successfully connected, the fan assembly 200 of the cleaning device 10 is switched to the second air duct 202 by the user's operation, such as the user selecting the corresponding program, or the user can manually drive the fan assembly 200 to switch the air duct.

[0368] In some embodiments, when the cleaning device 10 is disconnected from the cleaning base station 20 (e.g., the device is picked up), or after the cleaning device 10 is connected but has completed the dust collection or charging operation, the fan assembly 200 automatically switches back to the first air duct 201 (suction / normal operation air duct).

[0369] For example, the dust collection operation refers to the process of collecting and storing the dust and debris sucked into the cleaning device 10 during floor cleaning into the cleaning base station 20. The charging operation refers to the process of the cleaning base station 20 charging the power supply component 600 on the cleaning device 10 so that the cleaning device 10 can operate wirelessly.

[0370] For example, when the cleaning device 10 is placed into the cleaning base station 20, a microswitch on the cleaning base station 20 is triggered, and the internal control circuit of the cleaning device 10 switches the fan assembly 200 to blowing mode. After dust collection is completed (or the device is fully charged), it automatically switches back to suction mode. Alternatively, when the user picks up the cleaning device 10, a sensor detects that it has been removed and immediately switches back to suction mode.

[0371] Understandably, by linking airflow switching to the docking / disconnection status or operational phase of the equipment, a highly automated and seamless user experience is achieved. Users simply place the cleaning device 10 on the base station, and the system automatically enters self-cleaning / dust collection mode; after being removed, it automatically returns to vacuuming standby mode. This design avoids user errors caused by forgetting to switch modes.

[0372] It should be noted that the control logic for duct switching can be implemented in various ways, such as mechanical switches, Hall effect sensors, and infrared sensors.

[0373] Please refer to Figure 22 and combined Figures 4 to 9 In some embodiments, the dust collection chamber 21c has an air outlet 21d that can communicate with the outside.

[0374] When the fan assembly 200 switches to the second air duct 202 and is in operation, the air outlet 21d opens, thereby improving the airflow efficiency of the cleaning equipment 10 when blowing self-cleaning airflow into the dust collection chamber 21c and reducing air resistance. When the fan assembly 200 is not in operation or the second fan 23 is started, the air outlet 21d closes.

[0375] Understandably, the self-cleaning airflow blown from the cleaning device 10 into the cleaning base station 20 can pass through the dust collection chamber 21c and then flow out from the air outlet 21d, with dust being collected in the dust collection component 22 within the dust collection chamber 21c. In this way, less airflow passes through the second fan 23, resulting in lower air resistance.

[0376] For example, the cleaning device 10 can be placed on the first side of the cleaning base station 20, and the air outlet 21d can be set on the second side of the cleaning base station 20, so that the airflow is smoother, the airflow path is shortened, the airflow is prevented from turning, and the wind resistance is further reduced.

[0377] For example, the air outlet 21d may be equipped with a baffle for opening and closing. When the cleaning device 10 blows airflow into the cleaning base station 20, the dust collection chamber 21c is under positive pressure, and the baffle opens the air outlet 21d under the action of air pressure. The baffle can be reset by a torsion spring or by its own gravity to close the air outlet 21d.

[0378] Please refer to Figures 23 to 30 and combined Figures 4 to 9 In some embodiments, the clean base station 20 has a first exhaust duct 24, which is a channel inside the base station for discharging gas. The air outlet of the second fan 23 is connected to the first exhaust duct 24.

[0379] For example, the fan inside the dust collection station draws air in from the dust collection chamber 21c and then discharges it through the first exhaust duct 24 on the casing, and can be discharged into the surrounding environment through a grille. A sound-absorbing structure or a filter device can be designed downstream of the first exhaust duct 24.

[0380] Understandably, by setting up the first exhaust duct 24 and connecting it to the outlet of the second fan 23, a complete exhaust circuit for the base station is formed. The second fan 23 draws air from the dust collection chamber 21c, passes through itself, and then discharges the air outside the base station through the first exhaust duct 24. This ensures that the airflow generated during the dust collection process has a clear destination and will not create positive pressure inside the base station, leading to dust leakage or affecting fan efficiency.

[0381] It should be noted that the design of the first exhaust duct 24 can be fitted with sound-absorbing cotton and a post-filter to reduce wind noise and make the exhaust gas cleaner.

[0382] In some embodiments, the clean base station 20 also has a second exhaust duct 25. The inlet of the second exhaust duct 25 is connected to the dust collection chamber 21c, while the outlet of the second exhaust duct 25 is connected to the first exhaust duct 24, or directly connected to the outside atmosphere.

[0383] For example, an inlet to a second exhaust duct 25 is provided at the bottom of the dust collection chamber 21c, which is connected to an independent exhaust pipe, namely the second exhaust duct 25. This pipe can be directly connected to the grille of the outer shell of the cleaning base station 20, or it can be discharged after entering the first exhaust duct 24.

[0384] Understandably, by providing a second exhaust duct 25, an additional, potentially more direct or quieter exhaust path is provided for the gas within the dust collection chamber 21c. The second exhaust duct 25 can be used to allow the airflow generated by the fan assembly 200 on the cleaning device 10 in blowing mode to pass through during cleaning, thereby reducing the airflow entering the second fan 23 and improving the smoothness of airflow.

[0385] In some embodiments, a second baffle 27 is provided on the second exhaust duct 25. When the cleaning device 10 is in blowing mode, i.e., self-cleaning mode, the second baffle 27 opens, allowing the second exhaust duct 25 to be open. When the cleaning device 10 is not in blowing mode, such as in vacuuming mode or standby mode; or when the second fan 23 is working, the second baffle 27 closes, cutting off the second exhaust duct 25.

[0386] For example, the second wind deflector 27 may be a valve or a baffle.

[0387] For example, the second wind deflector 27 is a valve plate 120 that is spring-reset.

[0388] Understandably, the second exhaust duct 25 is controlled by setting up an openable and closable second baffle 27. When the cleaning device 10 is self-cleaning, opening this duct provides a dedicated, low-resistance exhaust path for the dust-laden airflow from the cleaning device 10, preventing dust accumulation inside the base station. When the second fan 23 is operating, closing the second exhaust duct 25 ensures that the negative pressure generated by the second fan 23 is entirely applied to the dust collection chamber 21c, efficiently drawing dust from the cleaning device 10 into the dust collection component 22 without "short-circuiting" through the second exhaust duct 25, thus preventing the second fan 23 from drawing air from the second exhaust duct 25. This optimizes the airflow path under different operating modes, improves dust collection efficiency, and prevents dust backflow or leakage.

[0389] In some embodiments, the second windbreak 27 is disposed at the entrance of the second exhaust duct 25, i.e., near the dust collection bin 21c.

[0390] For example, a one-way valve is installed at the bottom of the dust collection chamber 21c as a second baffle 27. In this way, the second baffle 27 directly controls the flow of gas from the dust collection chamber 21c into the second exhaust duct 25.

[0391] For example, the second wind deflector 27 may be disposed inside or outside the inlet of the second exhaust duct 25.

[0392] Understandably, by placing the second baffle 27 at the entrance of the second exhaust duct 25, the source of airflow entering the duct is controlled. This arrangement can minimize the unused space within the second exhaust duct 25 and prevent dust from accumulating inside the duct.

[0393] In some embodiments, a first baffle 26 is provided on the first exhaust duct 24. The airflow direction in the first exhaust duct 24 is from the outlet of the second fan 23 to the outside. Along this airflow direction, the outlet of the second exhaust duct 25 is located downstream of the first baffle 26.

[0394] For example, the first wind deflector 26 may be a valve or a baffle.

[0395] Understandably, by setting the first baffle 26 and positioning the outlet of the second exhaust duct 25 downstream of it, reasonable guidance of different air sources and prevention of backflow are achieved. When the second fan 23 is working, the first baffle 26 opens, allowing the exhaust gas to be smoothly discharged to the outside. When the cleaning device 10 self-cleanes, and the airflow enters the first exhaust duct 24 through the second exhaust duct 25, the airflow can smoothly pass through and be discharged to the outside because the outlet is located downstream of the first baffle 26. The first baffle 26 can prevent the airflow from entering the upstream of the first exhaust duct 24.

[0396] Those skilled in the art will understand that the first wind deflector 26 can be configured to automatically open the first exhaust duct 24 under the action of the airflow pressure generated by the second fan 23. The second wind deflector 27 can be configured to open the second exhaust duct 25 under the action of the airflow pressure generated when the fan assembly 200 is in the blowing state.

[0397] For example, the first baffle 26 is a flap that closes by gravity or a light spring, and is opened by airflow when the second fan 23 is started. The second baffle 27 is also a flap, but is installed at the inlet of the second exhaust duct 25, and is opened by positive pressure when the cleaning device 10 blows air.

[0398] Understandably, by designing the first baffle 26 and the second baffle 27 to be automatically driven by airflow pressure, completely passive and reliable valve control is achieved. When the second fan 23 is working, the airflow it discharges is sufficient to open the first baffle 26; when the first fan 210 blows air, the positive pressure it generates is sufficient to open the second baffle 27. Conversely, when these power sources stop, the baffles automatically close by their own weight or a return spring.

[0399] In some embodiments, the inlet of the second exhaust duct 25 is located at the bottom of the dust collection bin 21c. The second baffle 27 is located at the lower end of the inlet and is rotatably connected to the edge of the inlet via a pivot, allowing the baffle to swing up and down.

[0400] The rotating shaft is fitted with a torsion spring, which applies a force to the second windshield 27 to rotate it upward and close the inlet, i.e., to reset and close the inlet.

[0401] In some embodiments, the first windbreak 26 is configured to return to its original position using its own weight and to close the first exhaust duct 24 in a vertical direction (up and down direction).

[0402] For example, the second baffle 27 can be a flap that is mounted on the dust outlet at the bottom of the dust collection chamber 21c via a horizontal pivot, and is normally closed by a torsion spring. When the cleaning device 10 blows air, the airflow overcomes the torsion spring force and pushes it downward.

[0403] For example, the first wind deflector 26 can be a gravity-operated flap that closes vertically under gravity and opens horizontally when the second fan 23 blows air. There can be one or more first wind deflectors 26.

[0404] Understandably, by employing specific structures for torsion spring reset and gravity reset, a simple, reliable, and energy-free automatic valve reset mechanism has been achieved.

[0405] In some embodiments, the dust collection bin 21c is provided with a ventilation inlet 21e, which is connected to the air inlet 23a.

[0406] The ventilation inlet 21e is located in the central area at the bottom of the dust collection bin 21c; the inlet of the second exhaust duct 25 is located in the edge area at the bottom of the dust collection bin 21c.

[0407] Understandably, both the first exhaust duct 24 and the second exhaust duct 25 are located below the bottom of the dust collection bin 21c, which makes full use of the space at the bottom of the dust collection bin 21c. Separating the inlets of the first exhaust duct 24 and the second exhaust duct 25 improves the compactness of the layout.

[0408] For example, the first exhaust duct 24 may extend in a spiral shape, and the second exhaust duct 25 may be arranged around the first exhaust duct 24. The second fan 23 may be located in the central area of ​​the first exhaust duct 24, and the airflow flows spirally outward through the second fan 23.

[0409] For example, the top of the second fan 23 may be provided with a fan sealing gasket 23c to improve the sealing effect between the first exhaust duct 24 and the housing of the second fan 23. The bottom of the second fan 23 is provided with a fan vibration damping pad 23b, which can play a buffering role and reduce the vibration noise of the second fan 23 during operation.

[0410] For example, the outlet of the first exhaust duct 24 may be provided with a third filter unit 28. The third filter unit 28 may be a HEPA filter unit, used to filter out small amounts of dust that may be present in the exhaust airflow after dust collection. A filter cover plate 28a is provided on the outside of the third filter unit 28, and the filter cover plate 28a may be a grid structure. The filter cover plate 28a may be detachably connected to the base of the base station body 21 to facilitate the removal of the third filter unit 28.

[0411] In some embodiments, a third airflow channel 502 may be formed in the flow path between the floor brush 500 and the housing 100 of the cleaning device 10. When the second fan 23 of the cleaning base station 20 is working, the airflow generated not only flows from the second airflow channel 102 (self-cleaning air duct) inside the housing 100 of the cleaning device 10 to the dust collection chamber 21c, but also flows through the third airflow channel 502 between the floor brush 500 and the housing 100 (i.e., the front section of the path during normal vacuuming) to the dust collection chamber 21c. In other words, the second fan 23 simultaneously draws in air and dust from both channels.

[0412] For example, the third airflow channel 502 can be formed by sequentially connecting the suction port of the floor brush 500, the internal air duct of the floor brush 500, the connecting pipe, and the connecting joint with the housing 100.

[0413] For example, when the cleaning device 10 is placed in the cleaning base station 20 and the second fan 23 is started, on the one hand, the self-cleaning air duct inside the cleaning device 10 opens, blowing the dust in the dust cup of the housing 100 toward the dust collection port 106; on the other hand, part of the airflow is drawn back in from the suction port of the floor brush 500, which can clean the floor brush 500 and the path between the floor brush 500 and the housing 100.

[0414] Understandably, by having the second fan 23 simultaneously act on both the second airflow channel 102 and the third airflow channel 502, dual-path suction of dust within the cleaning equipment 10 is achieved. This not only allows dust to be directly removed from the self-cleaning duct, but also utilizes the channels of the floor brush 500 to form an additional airflow loop, which helps to more thoroughly remove dust remaining in the floor brush 500 and its piping.

[0415] It should be noted that dual-path suction can create more comprehensive airflow coverage and improve the thoroughness of dust collection.

[0416] In some embodiments, a one-way valve 130 is provided on the housing 100 of the cleaning device 10.

[0417] When the fan assembly 200 of the cleaning equipment 10 is started and switched to the first air duct 201 (suction mode), or when the second fan 23 of the cleaning base station 20 is working, the one-way valve 130 opens, making the passage from the floor brush 500 of the third airflow channel 502 to the housing 100 open.

[0418] When the fan assembly 200 of the cleaning device 10 switches to the second air duct 202 (blowing / self-cleaning mode), the one-way valve 130 closes, cutting off the third airflow channel 502.

[0419] For example, the one-way valve 130 can be a flexible baffle, such as a rubber or silicone sheet. This flexible baffle is attached to the lower end of the housing 100. When the third airflow channel 502 needs to be opened (e.g., in vacuuming mode or base station dust collection mode), the airflow direction is from the floor brush 500 to the interior of the housing 100. The air pressure causes the flexible baffle to fold inwards (i.e., open) to allow airflow. When it needs to be closed (e.g., in the self-cleaning mode of the cleaning device 10), the reverse air pressure presses the flexible baffle against the valve seat, achieving a seal and preventing the cleaning airflow from blowing dust into the floor brush 500.

[0420] Understandably, by employing a flexible baffle as the one-way valve 130, opening and closing are achieved through its own elasticity and airflow pressure, eliminating the need for additional springs or hinge mechanisms. The flexible baffle is connected to the lower end inside the housing 100, facilitating the entry and exit of airflow from the floor brush 500. When open, the baffle folds inward, without occupying additional external space.

[0421] The following example illustrates the working logic of the cleaning device 10 and the cleaning base station 20 during self-cleaning.

[0422] In some embodiments, when the cleaning device 10 performs a self-cleaning operation on the cleaning base station 20, the fan assembly 200 of the cleaning device 10 switches to the second air duct 202, i.e., the blowing mode. Furthermore, the fan assembly 200 of the cleaning device 10 and the second fan 23 of the cleaning base station 20 are configured to alternately start at preset intervals.

[0423] For example, the control logic could be: first, start the cleaning device 10's own fan to blow air, loosening and raising the dust in the dust cup; then stop, and then start the second fan 23 of the cleaning base station 20 to suck up the raised dust. This alternating cycle can be repeated multiple times, or only for one cycle.

[0424] For example, the start-up time of the fan assembly 200, the start-up time of the second fan 23, and the interval between them can be the same or different, including but not limited to 3s, 5s, 10s, etc., and this application embodiment does not specifically limit this.

[0425] Understandably, by employing the alternating operation of fan assembly 200 and second fan 23, "pulse-like" or "intermittent" deep cleaning is achieved. This alternating action produces a "blow-suction-blow-suction" effect. Alternating operation can more effectively loosen, disperse, and remove dust.

[0426] In some embodiments, when the cleaning device 10 starts the self-cleaning process, the control logic is set such that the fan assembly 200 of the cleaning device 10 itself starts before the second fan 23 of the cleaning base station 20.

[0427] For example, after the user starts the self-cleaning program, firstly, the fan assembly 200 inside the cleaning device 10 runs in blowing mode for a few seconds to blow up the dust in the dust cup of the housing 100; then, the fan assembly 200 of the cleaning device 10 stops, and the second fan 23 of the cleaning base station 20 starts to suck the dust into the dust collection component 22.

[0428] Understandably, by setting the fan assembly 200 to start before the second fan 23, a "blow-then-suction" cleaning sequence is achieved. First, the blowing action effectively loosens, disperses, and lifts the accumulated dust adhering to the filter assembly 300, the inner wall of the dust cup, and the corners, suspending it in the airflow. Subsequently, the powerful suction action of the base station efficiently draws this suspended dust into the dust collection bag. This sequence also avoids the mutual interference between the two airflows that might occur if they were started simultaneously.

[0429] In some embodiments, the power of the second fan 23 of the cleaning base station 20 can be set to be greater than the power of the fan assembly 200 of the cleaning device 10 itself.

[0430] Understandably, when the cleaning device 10 uses its self-cleaning airflow, it primarily loosens and blows away dust, requiring minimal power. However, the base station suction system needs to overcome the resistance of longer pipes, dust collection bags, and potential leaks, necessitating powerful suction to efficiently draw dust from the cleaning device 10 into the base station dust collection component 22. A high-powered fan can generate higher negative pressure and greater airflow, ensuring thorough dust removal even under resistance conditions, thus achieving a better self-cleaning effect.

[0431] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cleaning device, characterized in that, include: Casing (100); A fan assembly (200) is disposed within the housing (100); the fan assembly (200) has a switchable first air duct (201) and a second air duct (202); A filter assembly (300) is disposed within the housing (100) and forms a first airflow channel (101) and a second airflow channel (102). The cleaning device has a suction state, in which the fan assembly (200) switches to the first air duct (201), the first airflow channel (101) is connected to the first air duct (201), and the airflow flows through the filter assembly (300) to the fan assembly (200); the cleaning device also has a blowing state, in which the fan assembly (200) switches to the second air duct (202), the second air duct (202) is connected to the second airflow channel (102), and the airflow flows from the fan assembly (200) to the filter assembly (300). The filter assembly (300) includes a dust-gas separation structure (320); the dust-gas separation structure (320) has a dust collection chamber (321) having an opening (321a) that can be opened or closed; the opening (321a) is configured such that when opened, the second airflow passage (102) is open, and when closed, the second airflow passage (102) is closed. The dust-gas separation structure (320) includes a cylinder (322), a cyclone guide section (323), and a ventilation pipe (324). When the second airflow channel (102) is not open, the first airflow channel (101) allows the airflow to flow from the outside of the cylinder (322) and through the cyclone guide section (323) to achieve dust-gas separation. When the second airflow channel (102) is open, the second airflow channel (102) allows the airflow to directly enter the interior of the cylinder (322) from the ventilation pipe (324) and flow out through the opening (321a).

2. The cleaning equipment according to claim 1, characterized in that, The filter assembly (300) includes a first filter unit (310); the dust-gas separation structure (320) is connected to the fan assembly (200); When in the suction state, the first airflow channel (101) is open, and the suction airflow passes through the first filter unit (310) and the dust-air separation structure (320) in sequence. When in the blowing state, the second airflow channel (102) is open, and the self-cleaning airflow passes through the dust-air separation structure (320) and the first filter unit (310) in sequence.

3. The cleaning equipment according to claim 2, characterized in that, The first filter unit (310) and the dust-gas separation structure (320) are arranged along the length of the housing (100); the first airflow channel (101) and the second airflow channel (102) partially overlap.

4. The cleaning equipment according to claim 3, characterized in that, The filter assembly (300) further includes a ventilation bracket (330), which is connected between the first filter unit (310) and the dust-air separation structure (320); the first airflow channel (101) and the second airflow channel (102) both pass through the ventilation bracket (330).

5. The cleaning equipment according to claim 4, characterized in that, The first filter unit (310) has a fixed end and a free end at its two ends along its length. The fixed end is provided with a flexible joint (340) and is connected to the ventilation bracket (330) through the flexible joint (340). The flexible joint (340) is configured to allow the first filter unit (310) to vibrate relative to the ventilation bracket (330).

6. The cleaning equipment according to claim 5, characterized in that, The flexible joint (340) is bonded or coated with adhesive to the ventilation bracket (330) for fixed connection; and / or, The lower end of the flexible connector (340) is sleeved on the outer side of the upper end of the first filter unit (310).

7. The cleaning equipment according to claim 3, characterized in that, The cylindrical body (322) is used to form the dust collection chamber (321), the opening (321a) is located at one end of the cylindrical body (322) facing the first filter unit (310); the cylindrical body (322) is provided with an opening (321b) at one end away from the first filter unit (310), the ventilation pipe (324) is disposed at the opening (321b), and the cyclone guide (323) is located between the inner wall of the cylindrical body (322) and the outer wall of the ventilation pipe (324); When the second airflow channel (102) is not open, the first airflow channel (101) causes the dust-collecting airflow to flow from the first filter unit (310) through the outside of the cylinder (322) to the opening (321b), and then through the cyclone guide (323) to the ventilation pipe (324). When the second airflow channel (102) is open, the second airflow channel (102) allows the self-cleaning airflow to enter the interior of the cylinder (322) from the ventilation pipe (324), and after passing through the dust collection chamber (321), it flows from the opening (321a) to the first filter unit (310).

8. The cleaning equipment according to claim 7, characterized in that, The cyclone guide section (323) includes multiple spiral blades (3231), which are spaced apart and spirally extended on the outside of the ventilation pipe (324) to form multiple guide channels; the guide channels are used to guide the dust suction airflow spirally downward.

9. The cleaning equipment according to claim 7, characterized in that, The opening (321a) is provided with a first valve (325), which is configured to close the opening (321a) under the pressure of the suction airflow and / or open the opening (321a) under the pressure of the self-cleaning airflow.

10. The cleaning equipment according to claim 7, characterized in that, The first filter unit (310) is annular and has a filter surface (311) and a vent (312). The filter surface (311) and the vent (312) do not overlap. The vent (312) is provided with a second valve (313). When in the suction state, the second valve (313) closes the vent (312), and the airflow passes through the filter surface (311) from the outside to the inside of the first filter unit (310); When in the blowing state, the second valve (313) opens the vent (312), and the airflow flows from the inside to the outside of the first filter unit (310) through the vent (312).

11. The cleaning equipment according to claim 10, characterized in that, The first filter unit (310) is provided with a third valve (314) on its inner side; the third valve (314) is located on the side of the vent (312) away from the dust-gas separation structure (320); The third valve (314) is used to open the ventilation section inside the first filter unit (310) in the suction state and to block the ventilation section inside the first filter unit (310) in the blowing state.

12. The cleaning equipment according to claim 11, characterized in that, The second valve (313) is configured to close the vent (312) under the pressure of the suction airflow, and / or open the vent (312) under the pressure of the self-cleaning airflow; The third valve (314) is configured to open the ventilation section inside the first filter unit (310) under the pressure of the suction airflow, and / or block the ventilation section inside the first filter unit (310) under the pressure of the self-cleaning airflow.

13. The cleaning equipment according to claim 11, characterized in that, The second valve (313) and the third valve (314) are both located at one end of the first filter unit (310) near the dust-gas separation structure (320); the second valve (313) is located on the side wall of the first filter unit (310), and the third valve (314) is located below the second valve (313).

14. The cleaning equipment according to any one of claims 10 to 13, characterized in that, There are multiple vents (312), which are arranged circumferentially around the first filter unit (310), and each vent (312) is provided with the second valve (313).

15. The cleaning equipment according to claim 1, characterized in that, The fan assembly (200) includes a first fan (210) and a switching mechanism (220), the first fan (210) having an air inlet and an air outlet; the housing (100) has ventilation holes (103). When in the suction state, the switching mechanism (220) is configured such that the air inlet is connected to the filter assembly (300) and the air outlet is connected to the ventilation hole (103) to form the first air duct (201). When in the blowing state, the switching mechanism (220) is configured such that the air inlet is connected to the ventilation hole (103) and the air outlet is connected to the filter assembly (300) to form the second air duct (202).

16. The cleaning equipment according to claim 15, characterized in that, The switching mechanism (220) includes a duct support frame (221) and a rotating component (222) disposed within the duct support frame (221); the switching mechanism (220) has a first channel (220a) and a second channel (220b), the first channel (220a) being connected to the air inlet end and the second channel (220b) being connected to the air outlet end; The rotating component (222) has a first position and a second position. When it is in the first position, the first channel (220a) is connected to the filter assembly (300), and the second channel (220b) is connected to the ventilation hole (103). When it is in the second position, the first channel (220a) is connected to the ventilation hole (103), and the second channel (220b) is connected to the filter assembly (300).

17. The cleaning equipment according to claim 16, characterized in that, The rotating component (222) forms the first channel (220a); and / or, The rotating component (222) forms the second channel (220b), or the rotating component (222) cooperates with the air duct support frame (221) to form the second channel (220b).

18. The cleaning equipment according to claim 16, characterized in that, The air inlet faces the filter assembly (300); the rotating part (222) is rotatably disposed on the air inlet, the first channel (220a) is opposite to the air inlet along the axial direction of the first fan (210), the second channel (220b) is located outside the first channel (220a), and the airflow at the air outlet flows from the outside of the first fan (210) to the second channel (220b).

19. The cleaning equipment according to claim 16, characterized in that, The fan assembly (200) also includes a fan cover (230), which is located on the outside of the first fan (210). There is a gap between the outer wall of the first fan (210) and the inner wall of the fan cover (230). The airflow at the outlet flows from the gap to the second channel (220b).

20. The cleaning equipment according to claim 19, characterized in that, The fan assembly (200) also includes a fan cover (240), which is connected to the top of the fan shroud (230) and is positioned at the air outlet so that the airflow from the first fan (210) is redirected to enter the gap.

21. The cleaning equipment according to claim 16, characterized in that, The switching mechanism (220) further includes a drive unit (223), the output end of which is connected to the rotating member (222) for driving the rotating member (222) to rotate; and / or, the rotating member (222) rotates by an angle of 180° between the first position and the second position.

22. The cleaning equipment according to claim 21, characterized in that, The switching mechanism (220) further includes a bushing (224), and a bearing seat (225) is provided on the rotating part (222). The bushing (224) is sleeved on the output end of the drive unit (223), and the bushing (224) is inserted into the bearing seat (225).

23. The cleaning equipment according to claim 21, characterized in that, The switching mechanism (220) further includes a motor bracket (226), which is located at the end of the rotating part (222) away from the first fan (210), and the motor bracket (226) is connected to the air duct support frame (221). The drive unit (223) is located on the motor bracket (226).

24. The cleaning equipment according to claim 16, characterized in that, The air duct support frame (221) includes a mounting sleeve (2211) and a mounting plate (2212). The mounting plate (2212) is connected inside the mounting sleeve (2211). The rotating component (222) is rotatably housed within the space enclosed by the mounting sleeve (2211) and the mounting plate (2212). The side wall of the mounting sleeve (2211) is provided with a first through hole (2213), which communicates with the ventilation hole (103). The mounting plate (2212) is provided with a dust suction port (2214) and a dust blowing port (2215). The rotating component (222) is used to open one of the suction port (2214) and the blowing port (2215) and connect it to the filter assembly (300), while closing the other of the suction port (2214) and the blowing port (2215).

25. The cleaning equipment according to claim 24, characterized in that, The rotating component (222) has a first air inlet channel (2221) and a second air inlet channel (2222); the first air inlet channel (2221) has a second through hole (2223) at the bottom, a third through hole (2224) at the top, and a fourth through hole (2225) on the side; the second air inlet channel (2222) is located to the side of the first air inlet channel (2221) and communicates with the first air inlet channel (2221) through the fourth through hole (2225); the second air inlet channel (2222) has a fifth through hole (2226) on the side away from the fourth through hole (2225); the bottom of the rotating component (222) is opposite to the mounting plate (2212); The first air inlet channel (2221) and the second air inlet channel (2222) together form the first channel (220a); The second channel (220b) is located on the side of the first air inlet channel (2221) away from the second air inlet channel (2222).

26. The cleaning equipment according to claim 25, characterized in that, The outer wall (2227) of the first air inlet channel (2221) on the side away from the second air inlet channel (2222) together with the air duct support frame (221) forms the second channel (220b); or, A guide rib (2228) is provided on the side of the first air inlet channel (2221) away from the second air inlet channel (2222). The guide rib (2228) and the outer wall (2227) of the first air inlet channel (2221) away from the second air inlet channel (2222) form the second channel (220b).

27. The cleaning equipment according to claim 25, characterized in that, The third through hole (2224) is always connected to the air inlet end, and the top of the second channel (220b) is always connected to the air outlet end; When the rotating component (222) is in the first position, the second through hole (2223) is connected to the dust suction port (2214), and the bottom of the rotating component (222) closes the dust blowing port (2215). The fifth through hole (2226) is closed by the air duct support frame (221), and the second channel (220b) is directly opposite to the ventilation hole (103). When the rotating component (222) is in the second position, the mounting plate (2212) closes the second through hole (2223), the fifth through hole (2226) is directly opposite to and connected to the ventilation hole (103), the bottom of the rotating component (222) closes the dust suction port (2214), and the second channel (220b) is connected to the dust blowing port (2215).

28. The cleaning equipment according to claim 1, characterized in that, It also includes a second filter unit (400) disposed between the filter assembly (300) and the fan assembly (200).

29. The cleaning equipment according to claim 28, characterized in that, The second filter unit (400) is annular, and the diameter of the end of the second filter unit (400) facing the fan assembly (200) is smaller than the size of the end of the second filter unit (400) facing the filter assembly (300); The outer side of the second filter unit (400) is connected to the fan assembly (200); the inner side of the second filter unit (400) is connected to the filter assembly (300).

30. The cleaning equipment according to claim 29, characterized in that, The fan assembly (200) has a duct support frame (221) whose circumferential sidewalls extend to the periphery of the second filter unit (400) and form a ventilation gap with the outer surface of the second filter unit (400).

31. The cleaning equipment according to claim 1, characterized in that, It also includes a floor brush (500), which is connected to one end of the housing (100) along its length; the floor brush (500) has an air intake (501); the housing (100) includes a dust cup body, which has a dust storage chamber (105); the dust storage chamber (105) has an air inlet (104) that can be opened or closed. When in the suction state, the air inlet (104) is opened so that the air inlet (501) is connected to the dust storage chamber (105); when in the blowing state, the air inlet (104) is closed.

32. The cleaning equipment according to claim 1, characterized in that, It also includes a power supply assembly (600) disposed within the housing (100); along the length of the housing (100), the power supply assembly (600) is located at one end of the fan assembly (200) away from the filter assembly (300).

33. The cleaning equipment according to claim 32, characterized in that, The housing (100) has a handle (110) at one end along its length, and the power supply assembly (600) is located inside the handle (110).

34. A cleaning system, characterized in that, Includes a cleaning base station (20) and a cleaning device as described in any one of claims 1-33; The clean base station (20) includes a base station body (21) and a dust collection component (22) disposed within the base station body (21). After the cleaning device is placed in the cleaning base station (20), the interior of the housing (100) is connected to the dust collection component (22); when the cleaning device is in the blowing state, the airflow flows through the second airflow channel (102) to the dust collection component (22) so that the dust of the cleaning device is concentrated in the dust collection component (22).

35. The cleaning system according to claim 34, characterized in that, The housing (100) has a dust collection port (106), which is rotatably connected to a door panel (120). The cleaning base station (20) has a connecting hole (21a), and the edge of the connecting hole (21a) has a protrusion (21b) facing the cleaning device. The protrusion (21b) is used to abut against the door panel (120) so that when the cleaning device is placed on the cleaning base station (20), the door panel (120) rotates and opens the dust collection port (106).

36. The cleaning system according to claim 34, characterized in that, The cleaning base station (20) has a dust collection chamber (21c), and the dust collection component (22) is disposed in the dust collection chamber (21c); the cleaning base station (20) is provided with a second fan (23), the second fan (23) has an air inlet (23a), the air inlet (23a) is connected to the dust collection chamber (21c); the second fan (23) is used to form an airflow from the housing (100) to the dust collection chamber (21c).

37. The cleaning system according to claim 36, characterized in that, Simultaneously or after the cleaning equipment docks with the cleaning base station (20), the fan assembly (200) switches to the second air duct (202); and / or, The cleaning equipment is disconnected from the cleaning base station (20), or after the cleaning equipment is connected to the cleaning base station (20) and completes the dust collection operation or charging operation, the fan assembly (200) switches to the first air duct (201).

38. The cleaning system according to claim 36, characterized in that, The dust collection chamber (21c) is provided with an air outlet (21d) that can communicate with the outside. When the fan assembly (200) switches to the second air duct (202) and is in working condition, the air outlet (21d) is opened; when the fan assembly (200) is in non-working condition or the second fan (23) is started, the air outlet (21d) is closed.

39. The cleaning system according to claim 36, characterized in that, The clean base station (20) has a first exhaust duct (24), and the air outlet of the second fan (23) is connected to the first exhaust duct (24).

40. The cleaning system according to claim 39, characterized in that, The clean base station (20) has a second exhaust duct (25), the inlet of which is connected to the dust collection bin (21c), and the outlet of which is connected to the first exhaust duct (24) or to the outside.

41. The cleaning system according to claim 40, characterized in that, The second exhaust duct (25) is provided with a second wind deflector (27); When the cleaning equipment is in the blowing state, the second wind deflector (27) makes the second exhaust channel (25) open. When the cleaning equipment is not in the blowing state or when the second fan (23) is working, the second baffle (27) keeps the second exhaust channel (25) closed.

42. The cleaning system according to claim 41, characterized in that, The second wind deflector (27) is located at the entrance of the second exhaust duct (25).

43. The cleaning system according to claim 42, characterized in that, The first exhaust duct (24) is provided with a first wind deflector (26), and the airflow of the first exhaust duct (24) flows from the air outlet of the second fan (23) to the outside. Along the airflow direction of the first exhaust duct (24), the outlet of the second exhaust duct (25) is located downstream of the first wind deflector (26).

44. The cleaning system according to claim 43, characterized in that, The first wind deflector (26) is configured to open the first exhaust passage (24) under the airflow pressure of the second fan (23); and / or, The second wind deflector (27) is configured to open the second exhaust passage (25) under the action of the airflow pressure of the fan assembly (200).

45. The cleaning system according to claim 43, characterized in that, The inlet of the second exhaust duct (25) is located at the bottom of the dust collection bin (21c), and the second baffle (27) is located at the lower end of the inlet of the second exhaust duct (25); the second baffle (27) is rotatably connected to the edge of the inlet of the second exhaust duct (25) via a rotating shaft, and a torsion spring is sleeved on the rotating shaft. The torsion spring is used to apply force to the second baffle (27) so that the second baffle (27) resets and closes the inlet of the second exhaust duct (25); and / or, The first windbreak (26) is configured to be reset by gravity and to vertically close the first exhaust channel (24).

46. ​​The cleaning system according to claim 45, characterized in that, The dust collection chamber (21c) is provided with a ventilation inlet (21e), which is connected to the air inlet (23a); The ventilation inlet (21e) is located in the central area at the bottom of the dust collection chamber (21c); the inlet of the second exhaust duct (25) is located in the edge area at the bottom of the dust collection chamber (21c).

47. The cleaning system according to claim 36, characterized in that, A third airflow channel (502) is formed on the flow path between the floor brush (500) of the cleaning device and the housing (100). When the second fan (23) is working, the airflow flows to the dust collection bin (21c) through the second airflow channel (102) and the third airflow channel (502) at the same time.

48. The cleaning system according to claim 47, characterized in that, A one-way valve (130) is provided on the housing (100). When the fan assembly (200) is started and switched to the first air duct (201), or when the second fan (23) is working, the one-way valve (130) opens the third airflow channel (502). When the fan assembly (200) switches to the second air duct (202), the one-way valve (130) closes the third airflow channel (502).

49. The cleaning system according to claim 48, characterized in that, The one-way valve (130) is a flexible baffle, which is connected to the lower end inside the housing (100); when the third airflow channel (502) is opened, the flexible baffle folds into the housing (100).

50. The cleaning system according to claim 36, characterized in that, When the cleaning equipment self-cleans on the cleaning base station (20), the fan assembly (200) switches to the second air duct (202); the fan assembly (200) and the second fan (23) are configured to start alternately for a preset time.

51. The cleaning system according to claim 50, characterized in that, When the cleaning equipment begins self-cleaning, the fan assembly (200) starts before the second fan (23).

52. The cleaning system according to claim 50, characterized in that, The power of the second fan (23) is greater than the power of the fan assembly (200).

Images