An air cleaning device and a cleaning device

Abstract

The application provides an air purification device and a cleaning device, and relates to the technical field of air purification devices. The air purification device comprises a device shell with a purification cavity, a filter assembly rotatably arranged in the purification cavity, and an air purification fan and a driving mechanism. The air inlet end of the air purification fan is arranged corresponding to the air outlet part of the filter assembly; the driving mechanism is in transmission connection with the filter assembly and is configured to drive the filter assembly to move between a first position close to the air purification fan and a second position away from the air purification fan. The filter assembly is in butt joint with the fan when being in the first position and is separated from the fan when being in the second position. The scheme adjusts and switches the position of the filter assembly, meets the sealing requirement of the air purification device in the air purification working condition and the movement requirement in the rotating self-cleaning working condition, effectively avoids the abrasion and mechanical abnormal sound of functional components caused by rotating under pressure, and improves the reliability of long-term operation of the whole machine.

Description

Technical Field

[0001] This application relates to the field of air purification equipment technology, and more particularly to an air purification device and a cleaning device. Background Technology

[0002] Air purification equipment is generally equipped with filter components. Outside air enters the equipment under the drive of the fan, and pollutants are intercepted by the filter components. The purified air is then discharged back into the room, achieving air circulation and purification.

[0003] In practical applications, in order to ensure the purification efficiency of the equipment and prevent untreated airflow from bypassing and leaking, the air outlet of the filter component usually needs to be tightly fitted to the air inlet of the fan through a seal, so as to ensure that all the air to be purified can strictly penetrate the filter material.

[0004] With the evolution of self-cleaning technology, most existing air purification solutions employ a method of driving the filter components to move, causing the air intake surface to pass through a cleaning mechanism to remove surface dust. However, because the filter components are in a compressed and sealed state during normal operation, when the equipment switches to cleaning mode and involves the rotation of the filter components, the drive mechanism often forces the filter components to rotate while maintaining the sealing pressure. This mode leads to hard friction between the filter components and the seals. Long-term operation will not only rapidly wear down the sealing material, causing the airtightness of the equipment to fail under purification conditions, but the mechanical noise and vibration generated by this forced rotation will also seriously affect the user experience, and the huge frictional resistance will increase the operating load of the drive mechanism. Utility Model Content

[0005] To overcome the problems existing in the related technologies, this specification provides an air purification device and a cleaning device, which aims to solve the technical problems in air purification devices with self-cleaning functions, such as wear of related functional components, high drive load, and large mechanical noise caused by hard friction between the filter component and the sealing end face of the air purifier fan during the self-cleaning process.

[0006] According to a first aspect of the embodiments of this specification, an air purification device is provided, comprising:

[0007] The equipment casing contains a purification chamber.

[0008] A filter assembly is rotatably disposed within the purification chamber, and the filter assembly has an air inlet and an air outlet that are interconnected.

[0009] An air purifier fan is installed inside the purification chamber, with the air inlet of the air purifier fan corresponding to the air outlet of the filter assembly.

[0010] A drive mechanism is pulsatically connected to the filter assembly, and the drive mechanism is configured to drive the filter assembly to move between a first position close to the air purifier fan and a second position far from the air purifier fan;

[0011] When the filter assembly is in the first position, the filter assembly is connected to the air purifier fan;

[0012] When the filter assembly is in the second position, the filter assembly is separated from the air purifier fan.

[0013] Currently, in air purification devices using relevant technologies, the filter assembly is typically in a tightly sealed state with the air purifier fan's inlet during self-cleaning. Forcing the filter assembly to rotate under these conditions would cause severe hard friction between the filter assembly's end face and the air purifier fan. This hard friction not only rapidly wears down related functional components, leading to airtightness failure during subsequent purification operations, but also significantly increases the operating load on the drive mechanism and generates abnormal noise, severely impacting the device's reliability and user experience.

[0014] In this application, a rotatable filter assembly, an air purifier fan, and a drive mechanism are installed inside the purification chamber of the equipment casing. The drive mechanism drives the filter assembly to move between a first position close to the air purifier fan and a second position far away from the air purifier fan, so that the filter assembly is connected to the air purifier fan in the first position and separated from the air purifier fan in the second position.

[0015] This technical solution decouples the sealing and motion requirements of air purifiers by adjusting the position of the filter assembly via a drive mechanism. When the air purifier is in purifying mode, the filter assembly is in its primary position, and the drive mechanism provides a stable preload, ensuring a tight static seal between the filter assembly and the air purifier fan. This prevents bypass leakage of untreated airflow and guarantees the air purification capability of the equipment. When the air purifier is in cleaning mode, the drive mechanism can drive the filter assembly to move axially away from the fan, thereby releasing the sealing constraint between the filter assembly and the air purifier fan and achieving physical separation.

[0016] Building upon this, since the filter assembly has moved to its second position and is in a freely rotatable state, it avoids hard friction with the air purifier fan during rotation. This not only effectively prevents mechanical wear of the sealing material and ensures the airtight stability of the equipment, but also significantly reduces rotational resistance and motor power consumption during the self-cleaning process, extending the service life of the transmission system and power unit. Simultaneously, this solution eliminates forced rotation caused by mismatch between sealing compression and mechanical movement, as well as the resulting vibration and abnormal noise. It also ensures the smooth operation and reliable function of the equipment, enhancing the user experience.

[0017] In some example embodiments of this disclosure, when the filter assembly is in the second position, the drive mechanism is also configured to allow the filter assembly to rotate within the purification chamber.

[0018] In this type of embodiment, the drive mechanism is not only responsible for driving the filter assembly to move axially to achieve the switching between docking and separation states, but also provides rotational power when the filter assembly is in the second position, thereby ensuring the connection between the two actions of displacement separation and rotation cleaning.

[0019] Furthermore, this design, which balances position switching and rotation drive, not only simplifies the internal transmission structure of the air purifier and reduces component redundancy and space occupation, but more importantly, it ensures that the rotational action is performed under physically separated conditions. This avoids the risk of wear due to timing control deviations, thus eliminating hard friction between the filter element end face and the air purifier fan. It improves the automation and operational reliability of the air purifier under cleaning conditions, allowing the equipment to efficiently complete the self-cleaning of the filter element without requiring an additional power source.

[0020] In some example embodiments of this disclosure, the drive mechanism includes:

[0021] A drive unit has a fixed end and an output end, and the drive unit is fixed relative to the device housing through the fixed end;

[0022] A transmission assembly is movably disposed within the housing of the device, one end of the transmission assembly being connected to the output end of the drive unit, and the other end of the transmission assembly being connected to the filter assembly;

[0023] The drive unit is configured to drive the transmission component to move along a first direction or a second direction; when the transmission component moves along the first direction, the transmission component drives the filter component to move toward the first position; when the transmission component moves along the second direction, the transmission component drives the filter component to move toward the second position.

[0024] In this type of embodiment, the output of the drive unit transmits power to the filter assembly via a transmission assembly. The reciprocating motion of the transmission assembly along a first or second direction drives the filter assembly to switch between a first position close to the fan and a second position far from the fan. This arrangement allows the driving force to directly control the axial position of the filter assembly, ensuring that the filter assembly can switch between a sealed connection state and a physically separated state according to different operating conditions.

[0025] Furthermore, this solution, which utilizes the forward and reverse motion of a single power source to achieve switching between different positions, simplifies the power distribution and control logic of the entire machine. The same drive mechanism can achieve both the compression sealing under air purification conditions and the displacement separation under cleaning conditions, eliminating the need for additional redundant power actuators. This effectively reduces the structural complexity and manufacturing cost within the purification chamber. This not only improves the synchronization and response speed of the mechanism's actions but also reduces the risk of logical conflicts or failures that may arise from the coordination of multiple power sources, ensuring the operational stability and reliability of the equipment during condition switching.

[0026] In some example embodiments of this disclosure, the filter assembly includes a filter body and a tray for carrying the filter body, the tray being connected to the device housing via a one-way bearing;

[0027] The transmission assembly includes:

[0028] A turntable is rotatably disposed on the device housing in either the first or the second direction, and the turntable is connected to the output end of the drive unit.

[0029] A lifting linkage structure is disposed between the turntable and the tray;

[0030] When the turntable rotates along the first direction, the one-way bearing locks the rotation of the tray relative to the equipment housing, so that the turntable drives the tray to move to the first position through the lifting linkage structure;

[0031] When the turntable rotates in the second direction, the one-way bearing releases the tray, so that the turntable can drive the tray to move to the second position through the lifting linkage structure and drive the tray to rotate.

[0032] In this type of embodiment, by installing a one-way bearing between the tray used to carry the filter element and the equipment housing, and in conjunction with a lifting linkage structure between the turntable and the tray, the automatic switching of the power form is achieved by utilizing the physical characteristics of the mechanical structure. When the drive unit drives the turntable to rotate in the first direction, the one-way bearing automatically locks the rotational degree of freedom of the tray relative to the equipment housing, keeping the tray stationary in the circumferential direction, thereby forcing a relative rotational motion between the turntable and the tray. This relative motion, guided by the lifting linkage structure, converts the rotational power into axial thrust, driving the tray to move to the first position where it is sealed to the air purifier fan. When the turntable switches to rotating in the second direction, the one-way bearing releases the circumferential constraint on the tray, allowing the turntable to drive the tray to move to a second position away from the fan via the lifting linkage structure, and then drive the entire tray to rotate synchronously with the turntable.

[0033] This solution, which utilizes the physical characteristics of unidirectional bearings in conjunction with a lifting linkage structure, allows for two different mechanical working conditions—displacement and rotation—on the same axis with only the forward and reverse rotation of a single power source. By automatically switching at the mechanical level, it replaces complex electrical control or multi-power-source switching methods. This not only simplifies the number of components and space occupied by the drive mechanism, reducing manufacturing costs, but also ensures the sequentiality and reliability of action switching. It allows the filter components to obtain a stable static pre-tightening force when sealing is required, and to physically disengage before entering a free-rotation state when rotational cleaning is needed.

[0034] In some exemplary embodiments of this disclosure, the lifting linkage structure includes:

[0035] A pin is fixedly installed on the side of the turntable facing the tray;

[0036] A guide groove is formed in the tray, and the pin extends into the guide groove and can slide along the extension direction of the guide groove;

[0037] The sidewall of the guide groove is provided with an inclined guide surface, which extends along the circumference of the tray and is inclined away from the turntable from one end of the guide groove to the other end.

[0038] When the turntable rotates along the first direction, the pin slides from the lower position to the higher position along the inclined guide surface to abut against the inclined guide surface and drive the tray to move along its axial direction to the first position; when the turntable rotates along the second direction, the pin slides from the higher position to the lower position along the inclined guide surface to drive the tray to move to the second position and abut against the end of the guide groove to drive the tray to rotate.

[0039] In this type of embodiment, the scheme utilizing the interaction between the pin and the circumferentially extending inclined guide surface provides the filter assembly with an extremely smooth and controlled lifting trajectory, effectively ensuring the linearity and smoothness of the movement during position switching. Furthermore, the direct contact of the pin with the end of the guide groove to output rotational power ensures the rigidity and transmission efficiency of the filter assembly's rotational movement under self-cleaning conditions.

[0040] In addition, the preset stroke of the pin sliding from high to low in the guide groove ensures the timing logic of the filter component separating before rotating, so that the rotational self-cleaning action is always performed in a free state where the filter component is completely detached from the air purifier fan. This simplifies the mechanical structure and improves the accuracy and long-term reliability of the equipment operation.

[0041] In some exemplary embodiments of this disclosure, at least three lifting linkage structures are provided and are evenly arranged along the circumference of the turntable.

[0042] In this type of embodiment, when the drive unit outputs power through the turntable, multiple lifting linkage structures distributed on different phases of the circumference can work simultaneously to evenly transmit power to the bottom of the pallet in a multi-point manner, ensuring the synchronicity and stability of the power input. This ensures that the pallet is subjected to balanced force during lifting, effectively solving the problems of pallet tilting, swaying, and radial jamming that may be caused by single-point force or load offset.

[0043] Furthermore, because at least three support points create a stable force-bearing plane in the circumferential direction, the tray maintains axial parallelism with the air purifier's inlet end throughout its reciprocating movement. This ensures a tight seal when the filter components are first connected, guaranteeing air purification efficiency. Simultaneously, the multi-point evenly distributed structure effectively disperses localized mechanical stress during transmission, reducing wear and tear between the various lifting and linkage mechanisms. This improves the accuracy of the transmission mechanism's movements while enhancing the equipment's structural stability and reliability during long-term operation.

[0044] In some exemplary embodiments of this disclosure, the tray is provided with a guide ring extending toward the turntable, and the turntable has an annular guide cavity into which the guide ring extends and slides;

[0045] The lifting linkage structure is disposed between the guide ring and the annular guide cavity.

[0046] In this type of embodiment, by setting a guide ring extending towards the turntable on the pallet and directly embedding it into the annular guide cavity on the turntable, the guide ring and the cavity wall of the guide cavity form a tight nested fit, ensuring that the pallet can always be locked on the preset central axis when the pallet is switching between lifting and rotating, preventing the pallet from swaying left and right or shifting its center during movement.

[0047] By placing the lifting linkage structure between the guide ring and the annular guide cavity, the overall structure of the transmission assembly can be made more compact. By spatially overlapping the lifting transmission function and the circumferential guiding function, the space occupied by the transmission assembly is effectively reduced, leaving more room for the arrangement of other functional components in the purification chamber, which is conducive to the miniaturization design of the whole machine.

[0048] In some exemplary embodiments of this disclosure, the inner circumference of the turntable is provided with a gear ring, and the output end of the drive unit is provided with a drive gear that meshes with the gear ring.

[0049] In this type of embodiment, since the drive gear is set within the inner diameter range of the turntable, the idle space inside the turntable is effectively utilized, making the overall structure of the drive mechanism more compact and conducive to the miniaturization design of air purification equipment.

[0050] Meanwhile, the internal meshing transmission has a high degree of overlap, which enables a more uniform load distribution between gears and provides a smoother power output, ensuring the smoothness of the filter components during lifting and lowering, as well as during rotational cleaning. Furthermore, placing the gear meshing surface on the inner circumference of the turntable also utilizes the turntable itself to form a physical barrier, reducing the interference of dust in the purification chamber on gear movement, lowering operating noise, and mitigating mechanical wear, further improving the transmission accuracy and reliability of the equipment during long-term operation.

[0051] In some example embodiments of this disclosure, the filter assembly is provided with a sealing ring on the side facing the air purifier fan for pressing and sealing with the air purifier fan at the first position.

[0052] In this type of embodiment, considering that the filter assembly is configured to move between different positions and has a rotation function, a permanent physical connection cannot be used between it and the air purifier fan. By providing a sealing ring on the side of the filter assembly facing the air purifier fan, when the drive mechanism moves the filter assembly to the first position and docks with the air purifier fan, the sealing ring undergoes elastic deformation under the compression of the end faces of both, thereby tightly fitting between the filter assembly and the air purifier fan and sealing the gap between their end faces.

[0053] This compression sealing mechanism, achieved through a sealing ring, effectively ensures the high airtightness of the equipment under air purification conditions. The sealing ring's sealing effect completely prevents bypass leakage of airflow within the purification chamber, ensuring that all air entering the equipment can penetrate the filter, thus guaranteeing the continuous and stable purification efficiency of the air purifier. Furthermore, the sealing ring also acts as a flexible buffer, preventing direct collision between the filter components and the air purifier fan when they reach their initial position. It also effectively absorbs minor vibrations during fan operation, avoiding abnormal noises caused by hard contact, further optimizing the equipment's quiet operation and enhancing the user experience.

[0054] Some exemplary embodiments of this disclosure also include:

[0055] A cleaning pipeline is provided inside the purification chamber, and the cleaning pipeline is provided with a first dust suction section facing the filter assembly;

[0056] When the filter assembly is in the second position, the filter assembly is configured to allow rotation relative to the cleaning duct so that the first suction unit adsorbs and cleans the surface of the filter assembly.

[0057] In this type of embodiment, by adding a cleaning pipeline inside the purification chamber and positioning the first suction section therein directly opposite the surface of the filter assembly, the filter assembly's surface can rotate continuously relative to the stationary first suction section by utilizing the rotational freedom of the filter assembly in its second position. This arrangement utilizes the rotational power of the filter assembly itself, causing different areas of its surface to sequentially pass through the adsorption range of the first suction section, thereby achieving omnidirectional coverage of the filter assembly's surface.

[0058] Furthermore, this self-cleaning solution, which combines rotation with adsorption, effectively removes impurities accumulated on the surface of the filter components. Utilizing the negative pressure suction generated by the first suction unit, it directly captures and removes floating dust from the filter component surface, preventing increased airflow resistance and decreased purification efficiency caused by filter clogging, thus extending the maintenance cycle and lifespan of the filter components. Simultaneously, since the adsorption action occurs after the filter components detach from the air purifier fan, combined with close-range negative pressure suction, it minimizes the risk of dust re-entraining within the purification chamber, ensuring that the removed contaminants are directed to the dust collection area, avoiding secondary pollution of the purification chamber's internal environment.

[0059] In addition, since the cleaning pipeline and the filter assembly are in a non-contact adsorption state, this cleaning method causes minimal mechanical damage to the surface of the filter material. While ensuring the cleaning effect, it also maintains the integrity of the filter assembly structure and ensures the air purification effect of the filter assembly.

[0060] Some exemplary embodiments of this disclosure also include:

[0061] A paddle assembly is disposed within the purification chamber, and the paddle assembly is in contact with the surface of the filter assembly;

[0062] When the filter assembly is in the second position, the filter assembly is configured to allow rotation relative to the paddle assembly so that the paddle assembly paddles the surface of the filter assembly.

[0063] In this type of embodiment, by providing a paddle assembly that contacts the surface of the filter assembly inside the purification chamber, and by utilizing the relative motion of the filter assembly when it rotates in the second position, the paddle assembly can generate a continuous paddle action on the surface of the filter assembly.

[0064] This physical contact-based agitation method effectively enhances the removal of stubborn impurities from the filter element surface. During agitation, the agitator disrupts the adhesion between impurities and the filter fibers, causing them to fall off. This not only effectively prevents increased airflow resistance due to dust accumulation, ensuring the air purifier maintains a stable airflow with lower energy consumption, but also significantly extends the lifespan of the filter elements. Furthermore, the agitator allows for deep cleaning of the filter surface without complex power mechanisms, improving self-cleaning thoroughness, ensuring a clean environment inside the purification chamber, and enhancing the overall air purification performance.

[0065] In some example embodiments of this disclosure, the device housing includes:

[0066] A base for supporting the filter assembly, and the drive mechanism is disposed within the base;

[0067] A cover is disposed on the base and surrounds the base to form the purification chamber.

[0068] In this type of embodiment, the base serves as the supporting foundation for the air purifier, directly supporting the filter assembly and housing the drive mechanism. The casing, connected to the base, forms a dedicated purification chamber above the base for air processing. This integration of the drive mechanism within the base effectively improves the stability of the equipment's operation and strengthens the protection of related functional components. Furthermore, because the drive mechanism is located within the base at the bottom, the overall center of gravity of the machine is significantly lowered, ensuring that the equipment remains stable even when the filter assembly undergoes frequent lifting, lowering, or high-speed rotation, preventing mechanical vibration or center of gravity shift. The base also acts as a physical barrier between the drive mechanism and the purification chamber, effectively isolating dust within the purification chamber from interfering with critical transmission components such as the motor and gears, reducing mechanical wear and the risk of failure, and ensuring the accuracy of position switching actions.

[0069] This modular layout not only simplifies the assembly and disassembly process of the equipment, making it easier for users to replace or maintain the filter components, but also ensures that the purification function area and the power drive area do not interfere with each other. While ensuring reliable air purification effect, it also makes the overall structure more compact.

[0070] In some example embodiments of this disclosure, the housing is provided with a first chamber and a second chamber, and the first chamber and the second chamber are connected by an air vent.

[0071] The filter assembly is disposed in the first chamber, and its air outlet is oriented toward the air vent.

[0072] The air purifier fan is disposed in the second chamber and fixedly connected to the chamber wall of the second chamber, with the air inlet of the air purifier fan facing the air outlet.

[0073] In this type of embodiment, a first chamber and a second chamber are divided inside the housing, and the two spaces are connected by an air vent. The filter assembly is placed in the first chamber with its air outlet aligned with the air vent. The air purifier fan is fixedly connected to the wall of the second chamber, with its air inlet facing the air vent. This clearly defines the smooth path of airflow from the first chamber, through filtration and purification, through the air vent, and out of the second chamber. Because the air purifier fan is securely mounted on the wall of the second chamber, rather than directly loaded on the movable filter assembly, the aerodynamic source and the filter assembly are effectively separated, preventing minor vibrations during fan operation from interfering with the lifting or rotating movements of the filter assembly.

[0074] Meanwhile, this partitioned design allows the air outlet of the filter assembly and the air inlet of the fan to effectively connect at the air vent, shortening the airflow path and reducing turbulence generated when air flows within the purification chamber. This ensures the fan can maintain a stable purification airflow with lower energy consumption. Furthermore, the independent second chamber provides a protected installation environment for the fan and its circuit components, preventing dust from the first chamber from directly corroding the fan's interior, thereby enhancing the overall structural rigidity and long-term operational reliability of the unit.

[0075] According to a second aspect of the embodiments of this specification, a cleaning device is provided, comprising:

[0076] The handheld cleaning unit and the base station unit are provided, wherein the handheld cleaning unit can be connected to the base station unit, and the base station unit integrates the air purification equipment as described in the first aspect;

[0077] The base station body is also equipped with a dust collection chamber and an integrated air passage structure. The dust collection chamber is connected to the handheld cleaning body and the purification chamber in the air purifier through the integrated air passage structure.

[0078] In this application, by integrating the air purification device into the base station body and utilizing the integrated airflow structure to connect the dust collection chamber to both the handheld cleaning unit and the purification chamber, the power distribution and waste disposal path within the base station are integrated. When the handheld cleaning unit is docked to the base station, the base station can not only store or recharge it, but also utilize the airflow channel provided by the integrated airflow structure to guide the waste inside the handheld device and the air purification device into the dust collection chamber.

[0079] This structural design, which shares a single dust collection path between the air purifier and the handheld cleaning unit, effectively enhances the functional integration of the base station and simplifies the maintenance process for related equipment. Through the guiding effect of the integrated airflow structure, the debris cleaned by the handheld unit and the dust shed during the air purifier's self-cleaning process are all collected and stored in the same dust collection chamber. This avoids the need for multiple dust collection devices inside the base station, reducing the internal space occupied and making the structure more compact. Users only need to periodically clean one dust collection chamber to simultaneously maintain both the cleaning and air purification systems, greatly improving ease of use.

[0080] Furthermore, the closed connection of the integrated air circuit structure ensures that all contaminants remain sealed during transmission, preventing the risk of secondary dust release into the room during self-cleaning of the air purifier. This not only enables the base station to maintain clean indoor air for a long time, but also enhances the user experience.

[0081] In some exemplary embodiments of this disclosure, the integrated air passage structure is provided with a switching valve, which is configured to selectively open the air passage between the handheld cleaning body and the dust collection chamber, or the air passage between the purification chamber and the dust collection chamber.

[0082] In this type of embodiment, by adding a switching valve within the integrated air path structure, the selective allocation of negative pressure power source within the base station to different cleaning targets is achieved. When the handheld cleaning unit returns to the base station for cleaning, the switching valve opens the air path between the handheld cleaning unit and the dust collection chamber; when the air purifier performs a self-cleaning task, the switching valve switches to connect the path between the purification chamber and the dust collection chamber.

[0083] This path switching mechanism ensures that the suction power provided by the base station is concentrated on a single target at any given time, effectively avoiding suction loss due to airflow diversion and thus guaranteeing efficient and thorough dust collection or self-cleaning. Simultaneously, the isolation function of the switching valve effectively prevents backflow of dust between different air paths, ensuring that large particles of debris sucked in by the handheld cleaning unit do not accidentally enter the purification chamber, protecting the safety of the air purifier.

[0084] Furthermore, replacing two independent suction systems with an integrated gas path structure and switching valves simplifies the piping layout inside the base station, making the overall structure of the internal gas path components more compact. This not only reduces the overall hardware cost and component redundancy but also minimizes the risk of gas leakage that might arise from excessive piping.

[0085] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0086] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0087] Figure 1 This is a schematic diagram of the overall structure of the air purifier shown in the embodiments of this specification;

[0088] Figure 2 This is one of the cross-sectional views of the air purifier shown in the embodiments of this specification (part of the casing is omitted).

[0089] Figure 3 yes Figure 2 Enlarged view of part A;

[0090] Figure 4 This is one of the disassembled views of air purifier components shown in the embodiments of this specification (partial cover omitted).

[0091] Figure 5 This is the second disassembled view of the air purifier components shown in the embodiments of this specification (part of the cover is omitted).

[0092] Figure 6 This is a schematic diagram of the drive mechanism of the air purifier shown in the embodiments of this specification;

[0093] Figure 7 yes Figure 6 Enlarged view of part B;

[0094] Figure 8 This is the second cross-sectional view of the air purification equipment shown in the embodiments of this specification;

[0095] Figure 9 This is a schematic diagram of the overall structure of the cleaning equipment shown in the embodiments of this specification;

[0096] Figure 10 This is one of the schematic diagrams of the internal structure of the cleaning equipment shown in the embodiments of this specification;

[0097] Figure 11 This is the second schematic diagram of the internal structure of the cleaning equipment shown in the embodiments of this specification.

[0098] Explanation of reference numerals in the attached figures:

[0099] 10. Equipment casing; 11. Base; 12. Cover; 121. Air inlet; 122. Air outlet; 123. First chamber; 124. Second chamber; 125. Air vent; 20. Filter assembly; 21. Filter body; 211. Air inlet; 212. Air outlet; 22. Tray; 221. Guide ring; 23. One-way bearing; 24. Sealing ring; 30. Air purifier fan; 40. Drive mechanism; 41. Drive unit; 411. Fixed end; 41 2. Output end; 413. Drive gear; 42. Transmission assembly; 421. Turntable; 4211. Annular guide cavity; 4212. Gear ring; 422. Lifting linkage structure; 4221. Pin shaft; 4222. Guide groove; 4223. Inclined guide surface; 50. Cleaning pipeline; 51. First dust suction unit; 60. Paddle assembly; 70. Handheld cleaning body; 80. Base station body; 81. Dust collection chamber; 82. Integrated air circuit structure; 83. Switching valve. Detailed Implementation

[0100] The exemplary implementation will now be described more fully with reference to the accompanying drawings.

[0101] This embodiment provides an air purification device, which is mainly used for indoor air quality management. It drives outside air into the purification chamber through an internal air purification fan and uses a filter component to intercept pollutants in the airflow, thereby achieving air purification and quality improvement.

[0102] As is known from the background technology, air purification devices in related technologies often force rotation while maintaining a mutually pressed and sealed state with the air purifier fan during the self-cleaning action of the filter components. This "pressurized rotation" state causes severe hard friction between the end face of the filter components and the air purifier fan. Long-term operation will not only rapidly wear down the relevant functional components, leading to the failure of the airtightness of the equipment, but the mechanical noise and vibration caused by this forced rotation will also seriously affect the user experience and significantly increase the operating load of the drive mechanism.

[0103] In view of this, the air purifier of this embodiment is configured with a drive mechanism capable of moving the filter assembly between a first position close to the air purifier fan and a second position far from the air purifier fan. This allows the filter assembly to engage with the air purifier fan in the first position to ensure airtightness, and to separate from the air purifier fan in the second position for free rotation. This aims to solve problems such as component wear and excessive resistance caused by pressurized forced rotation during self-cleaning, decoupling the sealing and movement requirements of the air purifier. While ensuring long-term stable purification capabilities, it eliminates wear and abnormal noise caused by mechanical friction, improving the reliability and stability of the entire machine.

[0104] Please refer to the instruction manual attached. Figures 1-2The air purifier in this embodiment includes a housing 10 that serves as the supporting base of the device. The housing 10 defines a purification chamber for accommodating functional components and processing airflow. The housing 10 is provided with an air inlet 121 and an air outlet 122 that communicate with the purification chamber.

[0105] Inside the purification chamber, the air purifier is also equipped with a filter assembly 20 that performs air filtration. The filter assembly 20 has an air inlet 211 and an air outlet 212 that are interconnected.

[0106] Specifically, the filter assembly 20 is configured to be rotatably disposed within the purification chamber, meaning it is not fixed within the device housing 10 but can rotate around its central axis or a specific center of rotation. Structurally, the filter assembly 20 can be flexibly selected according to the spatial layout of the air purifier, for example, employing a hollow cylindrical filter element, a disc-shaped filter screen, or a polygonal frame structure. External airflow enters the filter assembly 20 through the air inlet 211, penetrates the internal filter element 21 to intercept particulate matter, and is finally discharged through the air outlet 212.

[0107] Meanwhile, an air purifier fan 30 is also installed inside the purification chamber. The air purifier fan 30 serves as the power source for driving air circulation. It has an air inlet and an air outlet. The air inlet and the air outlet 212 of the filter assembly 20 are correspondingly arranged inside the purification chamber so that the air driven by the air purifier fan 30 can be filtered by the filter assembly 20 and then flow to the air purifier fan 30 through the air outlet 212 of the filter assembly 20.

[0108] In order to achieve the above-mentioned control of the position state of the filter component 20, the air purifier is also provided with a drive mechanism 40 that is connected to the filter component 20 in a transmission. The drive mechanism 40 is configured to drive the filter component 20 to switch between a first position close to the air purifier fan 30 and a second position far away from the air purifier fan 30.

[0109] In practical applications of air purifiers, when the drive mechanism 40 receives an air purification command (from the control unit), it outputs power to move the filter assembly 20 to a first position close to the air purifier fan 30, at which point the filter assembly 20 and the air purifier fan 30 are docked. In this docked state, the air outlet 212 and the fan inlet are in a relatively sealed fit, ensuring that no bypass leakage occurs during airflow. During this process, the drive mechanism 40 can utilize various mechanical means to achieve this axial or radial displacement. For example, the drive unit 41 can be a set of stepper motors or servo motors, converting the motor rotation into the lifting motion of the filter assembly 20 via a lead screw pair; or an electromagnetic push rod can be used to directly push the filter assembly 20; or the eccentric rotation of a cam mechanism can be used to drive the filter assembly 20 to reciprocate in a preset direction. This embodiment does not impose strict limitations or requirements on this.

[0110] When the equipment needs to enter cleaning mode due to accumulated operating time or excessive dust, the drive mechanism 40 will drive the filter assembly 20 to move in the opposite direction, moving it to a second position away from the air purifier fan 30. At this time, the filter assembly 20 is separated from the air purifier fan 30. This separation action cuts off the direct contact between the filter assembly 20 and the fan, creating a certain gap between the originally tightly pressed sealing surfaces, giving the filter assembly 20 rotational freedom. Through the displacement switching between components, the filter assembly 20 can release the pressure constraint from the air purifier fan 30, thus allowing it to rotate completely freely during subsequent self-cleaning.

[0111] This embodiment utilizes the drive mechanism 40 to switch the position of the filter assembly 20. The first position, where the filter assembly 20 is engaged, ensures high airtightness of the equipment under air purification conditions, preventing untreated airflow from bypassing the system and thus guaranteeing high air purification efficiency. The second position, where it is separated, ensures that during the self-cleaning process, the end face of the filter assembly 20 will not experience any mechanical interference or hard friction with the air inlet of the air purifier fan 30. This isolation effectively eliminates abnormal noise and mechanical vibration caused by friction, while also significantly reducing the operating load and energy consumption of the drive mechanism 40 during the self-cleaning process. It also avoids wear and tear on the sealing material caused by forced rotation, thereby ensuring the airtight stability and operational reliability of the equipment throughout its entire lifecycle.

[0112] Considering that the filter assembly 20 requires comprehensive surface cleaning after long-term operation to maintain good permeability, in one embodiment, when the filter assembly 20 is in the second position away from the air purifier fan 30, the drive mechanism 40 is also configured to allow the filter assembly 20 to rotate within the purification chamber. This means that the drive mechanism 40 is not only used to drive the filter assembly 20 to switch between the first and second positions, but also gives it the ability to drive the filter assembly 20 to rotate circumferentially when the filter assembly 20 is in the second position.

[0113] This combined separation and rotation motion offers high flexibility. In specific applications, the drive mechanism 40 can, but is not limited to, employ a modular design with two actuators for driving the filter assembly 20 in different directions. For example, a dedicated power component (such as an electric actuator or cylinder) for linearly pushing and pulling the filter assembly 20 to achieve displacement switching can be integrated within the air purifier, along with a rotary motor responsible for providing torque. The two can be connected via a splined shaft or telescopic sleeve structure. When the air purifier enters cleaning mode, the linear power component actuates first, pulling the filter assembly 20 away from the air purifier fan 30 to a second position; subsequently, the rotary motor starts, causing the filter assembly 20 to rotate smoothly around its central axis. Alternatively, to further improve the internal structural compactness of the air purifier, the drive mechanism 40 can also employ a single power source combined with a clutch assembly. For example, a motor with a switching gearbox or a specific cam groove track can be used. After the motor starts, it first drives the filter element 20 to move axially to the second position through the threaded pair. When it returns to the second position and triggers the internal clutch component, the continuous power of the motor can be switched to the rotational power of the filter element 20.

[0114] This method of releasing the rotational freedom of the filter component 20 only when it is in the second position and driving its rotation via the drive mechanism 40 is based on the premise that, in the aforementioned embodiment, the sealing and clamping force applied to the filter component 20 by the air purifier fan 30 end face is released by spatial avoidance, providing an unobstructed environment for the rotation of the filter component 20. In this unobstructed state, the drive mechanism 40 can drive the filter component 20 to rotate smoothly, allowing the air inlet 211 surface of the filter component 20 to pass through the self-cleaning components (such as the suction port or cleaning brush) preset in the purification chamber in an orderly and continuous manner. This timing logic from avoidance to rotation not only effectively eliminates the problems of power source overload, jamming, and wear of functional components caused by forced rotation under pressure, but also ensures that large particles of dust and entangled objects attached to the filter material surface can be cleaned from all directions. By integrating displacement control and rotation drive, the operation logic of the air purifier is also made smoother, improving its automated dust removal coverage and mechanical structure service life while taking into account the airtightness requirements of the equipment.

[0115] Please refer to the instruction manual attached. Figures 2-3 To achieve precise control of the position of the filter assembly 20, in one embodiment, the drive mechanism 40 specifically includes a drive unit 41 as a power source and a transmission assembly 42 for transmitting power. The drive unit 41 has a fixed end 411 and an output end 412. The fixed end 411 is fixed relative to the device housing 10, thereby providing support for stable power output. The transmission assembly 42 is movably disposed within the device housing 10. One end of the transmission assembly 42 is connected to the output end 412 of the drive unit 41 to receive power, and the other end of the transmission assembly 42 is connected to the filter assembly 20, thereby transmitting the received power to the filter assembly 20.

[0116] It is understandable that the cooperation between the drive unit 41 and the transmission assembly 42 can be flexibly selected according to the spatial layout within the purification chamber. For example, the drive unit 41 can be a reversible motor, and the transmission assembly 42 can be configured as a lead screw pair. The motor housing is mounted on the inner wall of the equipment housing 10 as the fixed end 411, and the rotating shaft of its output end 412 is connected to the lead screw. The lead screw nut is fixed to the end of the filter assembly 20 or to a support frame for supporting the filter assembly 20. The rotation of the lead screw is converted into linear displacement of the lead screw nut, thereby pushing and pulling the filter assembly 20. Alternatively, the drive unit 41 can be an electric push rod or a linear motor, which can output linear displacement itself. In this case, the transmission assembly 42 can be simplified to a push-pull linkage or a load-bearing bracket that serves as a guide and rigid connection. Or, a gear and rack cooperation can be used, where the motor fixed on the equipment housing 10 drives the gear 413 to rotate, thereby driving the rack fixed on the side of the filter assembly 20 to translate.

[0117] Based on the above reasonable structural layout, the drive unit 41 is configured to drive the transmission component 42 to move along a first direction or a second direction. During equipment operation, when the transmission component 42 moves along the first direction (e.g., the upward direction of the lead screw nut or the forward direction of the rack) under the drive of the drive unit 41, the displacement of the transmission component 42 is directly applied to the filter component 20, thereby causing the filter component 20 to move towards the first position until it achieves a tight press-fit with the air inlet of the air purifier fan 30, ensuring high airtightness of airflow under air purification conditions. Conversely, when the air purifier switches to the cleaning condition, the drive unit 41 outputs power in the opposite direction. When the transmission component 42 moves along the second direction (e.g., the downward direction of the lead screw nut or the backward direction of the rack), the transmission component 42 exerts a traction effect, causing the filter component 20 to move towards the second position, facilitating the smooth separation of the filter component 20 from the air purifier fan 30 and releasing the sealing pressure.

[0118] This implementation specifically distinguishes the functional components or parts responsible for power generation and power transmission. By fixing the drive unit 41 to the equipment housing 10, it not only effectively avoids the center of gravity shift and abnormal vibration that may occur during the follow-up process of the power source, reducing the overall operating noise, but also enables the transmission component 42 to convert the bidirectional motion trajectory into the reciprocating switching of the filter component 20 between the first and second positions with high precision. This ensures that the filter component 20 can fit relatively tightly with the air purifier fan 30 during air purification, and can be self-cleaned without interference from the air purifier fan 30, fundamentally solving the structural contradiction between motion flexibility and sealing.

[0119] Please continue to refer to the instruction manual appendix. Figures 2-7 In one embodiment, the filter assembly 20 is specifically composed of a filter body 21 and a tray 22. The tray 22 serves as the supporting base for the filter body 21 and is connected to the device housing 10 via a one-way bearing 23 in this embodiment. This connection method creates a restricted rotational relationship between the tray 22 and the device housing 10, meaning that the tray 22 can only rotate relative to the device housing 10 in a specific direction, while in the opposite direction it is locked to the device housing 10 by the one-way bearing 23.

[0120] In order to allow the filter assembly 20 to move smoothly between the first and second positions, the one-way bearing 23 in this embodiment is also configured to allow the filter assembly 20 to reciprocate along its own axial direction. That is, the one-way bearing 23, in addition to limiting the radial movement of the filter assembly 20 in a certain circumferential direction, does not limit the axial movement of the filter assembly 20.

[0121] As described above, in order to drive the tray 22 to complete the combined motion of lifting and rotating, the transmission assembly 42 in this embodiment mainly consists of a turntable 421 and a lifting linkage structure 422 disposed between the turntable 421 and the tray 22. In this embodiment, the aforementioned first direction and second direction are defined as two opposite rotational directions. Specifically, the turntable 421 is rotatably disposed on the equipment housing 10 along the first direction or the second direction and is connected to the output end 412 of the drive unit 41.

[0122] It is understandable that the lifting linkage structure 422 is used to realize the power conversion of the drive unit 41, and its specific implementation can be varied. For example, a spiral guide groove 4222 with an inclination can be opened on the turntable 421, and a pin 4221 extending into the groove can be set at the bottom of the tray 22; or the annular inclined cam formed on the end face of the turntable 421 can be used to cooperate with the roller at the bottom of the tray 22; or the principle of multi-start thread pair can be used to convert the rotational torque into axial thrust.

[0123] In practical applications, when the turntable 421 rotates in the first direction (e.g., clockwise), the one-way bearing 23 locks the rotational freedom of the tray 22 relative to the equipment housing 10 through its internal wedges (e.g., ratchet teeth) or roller mechanism. At this time, the tray 22 is fixed in the circumferential direction, and a continuous relative rotation occurs between the turntable 421 and the tray 22. Under this relative motion, the lifting linkage structure 422 (e.g., the spiral groove and pin 4221) is activated by force, forcing the tray 22 to rise axially against gravity, thereby driving the tray 22 to move to the first position.

[0124] Conversely, when the turntable 421 rotates in the second direction (e.g., counterclockwise), the one-way bearing 23 releases the tray 22, relieving its rotational constraint on the equipment housing 10. In this state, the turntable 421 first drives the tray 22 to fall axially downwards via the lifting linkage structure 422, moving it to a second position away from the air purifier fan 30, thereby releasing the seal. When the tray 22 moves to the end of its stroke or the point of force equilibrium, since the one-way bearing 23 is no longer locked, the torque output by the turntable 421 will directly drive the tray 22 to rotate synchronously through the physical contact of the lifting linkage structure 422. This action allows the filter assembly 20 to rotate circumferentially around the second position, thereby cooperating with the self-cleaning components in the purification chamber to clean the surface of the filter body 21 in all directions.

[0125] As can be seen from the above, this implementation utilizes the one-way locking and reverse release principle of the one-way bearing 23, combined with the lifting linkage structure 422, to achieve control of both lifting switching and rotation cleaning functions by a single power source. This not only simplifies the number of internal components of the air purifier and reduces the complexity of the control system, but also ensures the stability of the tray 22 during lifting through physical locking.

[0126] Please refer to the instruction manual attached. Figures 4-7Taking the aforementioned embodiment as an example, the lifting linkage structure 422 uses a guide groove 4222 and a pin 4221 to realize the lifting and rotation of the filter assembly 20. The lifting linkage structure 422 includes a pin 4221 fixedly installed on the turntable 421 facing the tray 22, and a guide groove 4222 correspondingly opened on the tray 22. Since the pin 4221 is fixed to the turntable 421, it acts as a trigger component for active force generation when the turntable 421 receives power from the drive unit 41. Its end extends into the guide groove 4222 and can slide smoothly along the extension direction of the guide groove 4222. In order to achieve the conversion from rotational motion to axial lifting, the guide groove 4222 extends along the circumferential direction of the tray 22, and its side wall is machined with an inclined guide surface 4223 along the lifting direction of the filter assembly 20. The inclined guide surface 4223 extends along the circumferential direction of the tray 22 and gradually tilts away from the turntable 421 from one end of the guide groove 4222 to the other end, thereby forming a continuous ramp structure on the circumferential trajectory.

[0127] In specific application scenarios, the form of the pin 4221 can be selected in various ways. It can be a high-strength cylindrical pin that directly frictionally engages with the inclined guide surface 4223 of the guide groove 4222, or, to further reduce frictional wear during long-term operation, a self-lubricating bearing or wear-resistant roller can be fitted at the contact point between the pin 4221 and the inclined guide surface 4223. The guide groove 4222 can be a through groove that penetrates the wall thickness of the tray 22, or a blind groove with a bottom. In addition, the slope trajectory of the inclined guide surface 4223 is not limited to a straight ramp with a constant slope, but can also be designed as a ramp with a specific parabola or curve to control the acceleration of the tray 22 during lifting and lowering, achieving a smooth transition and shock absorption during the movement process.

[0128] With the above design, when the turntable 421 rotates along the first direction under the drive of the drive unit 41, the tray 22 is locked by the one-way bearing 23 and cannot rotate circumferentially. The pin 4221 will then generate relative displacement within the guide groove 4222, gradually rising from a low position to a high position along the inclined guide surface 4223. During this process, the pin 4221 continuously pushes upward against the inclined guide surface 4223, converting the rotational torque of the turntable 421 into a linear thrust upward along the central axis. This smoothly drives the tray 22 to move axially to the first position, ensuring that the filter assembly 20 has sufficient force to overcome resistance and is in a docking state with the air purifier fan 30.

[0129] Conversely, when the drive unit 41 drives the turntable 421 to rotate in the second direction, the pin 4221 slides back from the high position to the low position along the inclined guide surface 4223. At this time, the tray 22 follows and descends under the guidance of gravity or an auxiliary reset structure (such as a spring), thereby driving the tray 22 to move to the second position, so that the filter assembly 20 is safely separated from the air purifier fan 30 and the seal is released. As the turntable 421 continues to reverse, the pin 4221 will eventually slide to the bottom of the ramp and directly abut against the end of the guide groove 4222. At this time, since the one-way bearing 23 has released the rotation constraint on the tray 22, the pin 4221 stuck at the end of the groove plays a prying role. By continuously pushing the end of the guide groove 4222, it directly drives the tray 22 to rotate synchronously with the turntable 421 in the purification chamber, so as to cooperate with the external cleaning components to perform scraping or vacuuming actions.

[0130] This structure, which uses a pin 4221 and a guide groove 4222 in cooperation, not only significantly reduces the vertical space occupied by the drive mechanism 40, making the overall structure of the equipment more compact, but also limits the maximum and minimum stroke of the tray 22's lifting by the physical limit positions at both ends of the guide groove 4222, fundamentally eliminating the risk of the mechanism jamming due to movement exceeding the limit. At the same time, the flexible force characteristics brought by the inclined plane transmission effectively mitigate the mechanical impact at the moment of position switching, ensuring that the air purification equipment can maintain good action accuracy and operational stability when frequently switching between air purification and cleaning modes.

[0131] In one embodiment, in order to ensure the stability of the pallet 22 during movement, the number and spatial layout of the lifting linkage structure 422 are limited.

[0132] Specifically, at least three lifting linkage structures 422 are provided, and the lifting linkage structures 422 are evenly arranged along the circumference of the turntable 421. For example, when three lifting linkage structures 422 are used, they are arranged at 120-degree intervals on each other on the circumference of the turntable 421; if four are used, they are evenly distributed in an array at 90-degree intervals. This multi-point evenly distributed structure can ensure that the pallet 22 is subjected to balanced force during lifting, solving the problem of pallet 22 tilting or swaying that may be caused by single-point transmission or uneven load distribution, as well as the resulting mechanical risk of radial jamming between the pallet 22 and the equipment housing 10.

[0133] Because at least three support points together form a stable force-bearing plane in the circumferential direction, the tray 22 can always remain parallel to the air inlet end of the air purifier fan 30 during its upward or downward movement. This not only improves the smoothness of displacement switching between components and ensures the airtightness of the filter assembly 20 when it moves to the first position for docking, but also effectively disperses local mechanical stress during the transmission process through a multi-point evenly distributed arrangement, reducing the load and wear borne by each individual lifting linkage structure 422.

[0134] Based on the aforementioned implementation of the filter assembly 20 including the filter body 21 and the tray 22, and the transmission assembly 42 including the turntable 421 and the lifting linkage structure 422, please refer to the appendix of the instruction manual. Figures 2-5 In one embodiment, the bottom of the tray 22 is provided with a guide ring 221 extending towards the turntable 421. Correspondingly, the turntable 421 has an annular guide cavity 4211 into which the guide ring 221 extends and slides. In terms of specific mechanical form, the guide ring 221 can be a complete continuous cylindrical structure or a discontinuous annular structure formed by multiple arc-shaped inserts arranged at intervals along the circumference; and the groove width of the annular guide cavity 4211 is adapted to the thickness of the guide ring 221. By directly embedding the guide ring 221 into the annular guide cavity 4211, a nested fit is formed between the two, which firmly locks the center of motion of the tray 22 and the turntable 421 on the same axis, while also ensuring that the tray 22 can smoothly rotate relative to the turntable 421, allowing the lifting linkage structure 422 to perform the corresponding lifting and lowering functions.

[0135] Meanwhile, the lifting linkage structure 422 is positioned between the guide ring 221 and the annular guide cavity 4211. In actual transmission layouts, for example, when the lifting linkage structure 422 uses a combination of a pin 4221 and a guide groove 4222, the guide groove 4222 can be directly machined on the side wall of the guide ring 221, while the corresponding pin 4221 extends laterally from the cavity wall of the annular guide cavity 4211; and vice versa. This arrangement fully utilizes the overlapping internal areas of the nested guide structures to accommodate the transmission components in the lifting linkage structure 422, achieving spatial overlap between the lifting power transmission function and the central guiding function. This reduces the physical space occupied by the lifting linkage structure 422 in the radial direction, freeing up more space for the design of the air duct or the layout of the circuit structure within the purification cavity, thereby improving the overall integration and aligning with the trend of miniaturization in modern air purification equipment.

[0136] Furthermore, this structural form, which integrates the lifting linkage structure 422 between the guide ring 221 and the annular guide cavity 4211, can fully utilize the rigid support provided by the wall of the annular guide cavity 4211 to the guide ring 221, providing precise radial constraint for the filter assembly 20 in motion. When the filter assembly 20 performs lifting position switching or high-speed rotation cleaning actions, the nested structure can effectively counteract the lateral forces generated by uneven power transmission or external vibrations, preventing the tray 22 from shifting its center or swaying left and right during movement, thus ensuring mechanical dynamic stability. At the same time, since the lifting linkage structure 422 is housed inside the annular guide cavity 4211, the sidewall of the annular guide cavity 4211 can also form a physical barrier, preventing the intrusion of flying dust, lint, and other impurities in the purification chamber, thereby reducing the incidence of jamming failures during the lifting of the tray 22, reducing mechanical wear between components, and ensuring that the position switching process remains smooth.

[0137] like Figures 2-5 As shown, in one embodiment, a gear ring 4212 is machined or fixed on the inner circumference of the turntable 421, forming an internal gear structure; correspondingly, a drive gear 413 is fitted onto the output end 412 of the drive unit 41 (e.g., a drive motor). The drive gear 413 is positioned within the inner diameter range of the turntable 421, so that the outer drive gear teeth directly mesh with the gear ring 4212 on the inner circumference of the turntable 421.

[0138] During power transmission, the rotational torque generated by the drive unit 41 is first transmitted to the drive gear 413 at the output end 412, and then the power is directly applied to the inner wall of the turntable 421 in the form of tangential force through the meshing part between the gears. This internal meshing transmission method allows the rotation of the drive gear 413 to be smoothly converted into the rotation of the turntable 421 around its own central axis, thereby providing the core power for the lifting and lowering position switching of the aforementioned filter assembly 20 and the subsequent rotational self-cleaning action.

[0139] Since the drive gear 413 and even part of the drive unit 41 are directly housed in the idle area inside the turntable 421, this embodiment effectively reduces the radial dimension of the entire drive mechanism 40, making the internal mechanical structure of the air purifier more compact, thus conforming to the design concept of miniaturization of the entire air purifier. Secondly, from a mechanical perspective, compared to conventional external meshing transmission, internal meshing has a higher tooth profile overlap, and more teeth participate in meshing and bearing force simultaneously during transmission. This not only makes the load distribution between the tooth surfaces more uniform, but also effectively absorbs and suppresses minor vibrations during transmission, providing a more stable power output and ensuring the continuity of the filter assembly 20's operation when overcoming the sealing resistance of the air purifier fan 30 for lifting and switching, or when performing high-frequency rotation cleaning.

[0140] Considering that the filter assembly 20 is configured to reciprocate between different positions during operation, and also needs to be able to rotate freely within the purification chamber after being detached from the air purifier fan 30, in one embodiment, such as Figure 2 As shown, the filter assembly 20 is also provided with a sealing ring 24 on the side facing the air purifier fan 30.

[0141] In terms of specific materials and form configuration, the sealing ring 24 is typically made of a flexible material with resilience and fatigue resistance, such as silicone, EPDM rubber, or high-density foam. Its cross-sectional shape can also be designed according to the actual reserved gap and stress distribution. For example, it can be a solid rectangular cross-section sealing ring with uniform stress, a hollow sealing ring with a compression deformation buffer cavity, or a lip-shaped sealing ring with better guidance and fit. By arranging this elastic seal around the air outlet 212 of the filter assembly 20, a reliable flexible transition medium is provided for the connection between the filter assembly 20 and the air purifier fan 30, two rigid components.

[0142] In actual operation, when the drive mechanism 40 moves the filter assembly 20 to the first position and prepares to dock with the air purifier fan 30, the sealing ring 24 on the filter assembly 20 will contact the air inlet face of the fan. Under the bidirectional compression of the end faces of the filter assembly 20 and the air purifier fan 30, the sealing ring 24 undergoes moderate elastic deformation. This deformation allows the flexible sealing material to conform to and fill any assembly tolerances and end face gaps that may exist between the two components, thus ensuring a tight fit between the filter assembly 20 and the air purifier fan 30. This guarantees high airtightness of the air purifier during air purification, cuts off the path for bypass leakage between the filter assembly 20 and the air purifier fan 30, and ensures a continuous and stable clean air output rate.

[0143] In addition, the sealing ring 24 also plays a flexible buffering role during position switching and equipment operation. On the one hand, as mentioned above, it can effectively absorb the kinetic energy brought by the drive mechanism 40, preventing the filter component 20 from directly colliding with the housing of the air purifier fan 30 when it moves to the first position, thus protecting the mechanical structure from impact damage. On the other hand, when the air purifier fan 30 is running at high speed, the tightly fitting sealing ring 24 can significantly absorb and attenuate the minute vibrations transmitted from the motor to the filter component 20, avoiding resonance and mechanical noise caused by hard contact, thereby improving the user experience.

[0144] Please refer to the instruction manual attached. Figure 8In order to clean the surface of the filter assembly 20, this embodiment also adds a cleaning pipe 50 in the purification chamber. Specifically, the cleaning pipe 50 is arranged in the peripheral space adjacent to the filter assembly 20, and a first dust suction part 51 is provided on its pipe wall facing the surface of the filter assembly 20.

[0145] In terms of actual structural form, the cleaning pipe 50 can be flexibly adapted to the shape of the filter assembly 20. For example, for a cylindrical filter structure, the cleaning pipe 50 can be a fixed straight pipe extending axially along its height direction; while the first dust suction part 51 can be set as a continuous narrow slit-shaped opening, or multiple independent dust suction holes evenly arranged along the length of the pipe, so as to ensure that the negative pressure adsorption force can evenly and completely cover the entire height range of the filter body 21.

[0146] In the actual cleaning process of the equipment, when the air purifier enters the cleaning mode, the drive mechanism 40 first takes effect, adjusting the filter assembly 20 from the first position of tight contact to the second position away from the air purifier fan 30. At this time, since the filter assembly 20 has completely broken free from the physical contact and sealing pressure of the air purifier fan 30 end face, it gains unobstructed rotational freedom within the purification chamber. As the filter assembly 20 continues to rotate in the second position, its surface will pass through the stationary cleaning pipe 50 in an orderly and continuous manner. The local negative pressure field generated by the first dust suction unit 51 can capture and directly suck in impurities such as floating dust and hair from the surface of the filter material and deep folds into the pipe.

[0147] This method of component coordination not only simplifies the complexity of the internal cleaning mechanism, eliminating the need for the suction pipe to perform extensive and complex sweeping movements within the confined purification chamber, but more importantly, by relying on localized negative pressure near-field suction combined with the overall rotation of the filter assembly 20, it can directionally recover floating dust the moment it detaches from the filter body 21. This prevents the risk of secondary dust re-entrainment and scattering within the purification chamber, extends the maintenance cycle of the filter material, and ensures that the equipment can still provide high airtightness air purification efficiency when it is subsequently restored to its first position for air purification operations.

[0148] In one embodiment, considering that pet hair and stubborn lint can easily get tangled on the surface of the filter assembly 20, especially in the deep folds, and that airflow alone is often insufficient to completely remove them, this embodiment also adds a paddle assembly 60 inside the purification chamber.

[0149] Specifically, the paddle assembly 60 is disposed in the space immediately surrounding the filter assembly 20, and its ends or side edges are configured to maintain direct physical contact with the surface of the filter assembly 20. In its actual construction, the paddle assembly 60 can be, but is not limited to, a silicone scraper with excellent elasticity, a rubber material, or a fully enclosed solid structure with a certain degree of hardness and durability. In terms of spatial arrangement, the paddle assembly 60 can be an axial strip structure extending along the height direction of the filter assembly 20, or a ring or array structure arranged along the circumference, to fit the surfaces of different shaped filter bodies 21.

[0150] In the self-cleaning operation of the air purifier, when the air purifier is in cleaning mode, the drive mechanism 40 first moves the filter assembly 20 to a second position away from the air purifier fan 30. In this separated state, the filter assembly 20 is completely freed from the sealing and pressing resistance of the air purifier fan 30's air inlet. Based on this resistance-free state, the filter assembly 20 is configured to allow circumferential rotation relative to the stationary (or differently moving) deflector assembly 60. As the filter body 21 (usually composed of pleated filter media or a certain degree of elastic fiber material) continues to rotate in the second position, its surface will orderly pass through the action area where the deflector assembly 60 is located. During this relative movement, the edge of the deflector assembly 60 will press and push open the edge of the filter media, forcing the filter body 21 to produce local elastic deformation. Subsequently, when the filter media at the corresponding position of the filter body 21 passes the contact point of the paddle assembly 60, the filter media, which has lost its pressure, will instantly release potential energy and rebound rapidly. This compression and instantaneous rebound caused by relative movement can generate instantaneous acceleration and vibration energy in the filter body 21, thereby effectively destroying the adhesion or entanglement between large particles of dust, pet hair, and fibrous material and the surface of the filter media, and directly peeling these stubborn impurities from the surface of the air inlet 211 and deep into the gaps.

[0151] This implementation method not only effectively improves the deep cleaning effect on stubborn impurities, but more importantly, it avoids the negative impact of mechanical interference by utilizing spatial displacement. All the flicking actions are completed when the filter component 20 is in the disengaged state of the second position. This means that when the drive mechanism 40 drives the filter component 20 to rotate over the resistance of the flicking plate, it does not need to bear the heavy sealing friction resistance at the bottom. This not only greatly reduces the operating power consumption and mechanical noise of the drive mechanism 40, but also ensures that the air purifier can still maintain the integrity of the seal and the excellent air purification performance of the equipment after frequent deep physical self-cleaning.

[0152] In the embodiment combining this implementation with the aforementioned cleaning pipeline 50, the paddle assembly 60 and the cleaning pipeline 50 can be spaced apart on the same phase of the filter assembly 20, and the two are spaced apart along the radial direction of the filter assembly 20, so that the floating dust peeled off by the paddle assembly 60 can be quickly captured by the cleaning pipeline 50.

[0153] In one embodiment, the outer casing 10 of the air purifier is composed of a base 11 at the bottom and a cover 12 covering the base 11. The base 11 serves as the mounting carrier and support for the entire unit, supporting the filter assembly 20. To achieve concealed power arrangement and physical isolation, the drive mechanism 40 is also housed inside the base 11. The cover 12 is mounted on the base 11 via detachable connection, snap-fit, or fastener installation, and cooperates with the base 11 to form a relatively enclosed purification chamber. The aforementioned air inlet 121 and air outlet 122 are respectively located on the cover 12, allowing the filter assembly 20 to perform air filtration and self-cleaning operations in a protected environment.

[0154] Based on the aforementioned implementation methods, such as Figure 8 As shown, the casing 12 contains a first chamber 123 and a second chamber 124, which are fluidly connected via an air vent 125. It can be understood that these two chambers (the first chamber 123 and the second chamber 124) can be physically separated into independent areas by partitions, supports, or a central frame structure within the casing 12. The shape of the air vent 125 can be flexibly configured according to airflow requirements, for example, as a circular through-hole located at the center of the partition, a multi-hole array grid, or a conical guide port that guides airflow.

[0155] In the embodiment where the filter assembly 20 is further provided with a sealing ring 24, the filter assembly 20 can abut against the corresponding partition, bracket or middle frame structure or other separating component at the first position through its sealing ring 24, so as to avoid the force of the filter assembly 20 moving in the direction of the first position directly acting on the air purifier fan 30, which would cause the functional component to be displaced and affect the air purification effect.

[0156] In this layout, the filter assembly 20 is disposed within the first chamber 123, which serves as the purification chamber mentioned above, with its air outlet 212 facing the air outlet 125. Thus, outside air to be treated enters the first chamber 123 through the air inlet 121, undergoes purification by passing through the filter 21, and is then collected by the air outlet 212 and directed directly towards the air outlet 125. Conversely, the air purifier fan 30 is disposed within the second chamber 124 and fixedly connected to the chamber wall of the second chamber 124, with its air inlet facing the air outlet 125. The air purifier fan 30 can be fixedly connected using bolts, clips, or floating installation via elastic shock-absorbing pads, but its spatial position within the second chamber 124 remains stable relative to the equipment casing 10. Because the air purifier fan 30 is securely mounted on the wall of the second chamber 124, rather than being directly loaded or connected to the movable filter assembly 20, the dynamic vibrations generated by the high-speed operation of the air purifier fan 30 effectively prevent interference with the displacement switching action of the filter assembly 20. Minor vibrations during fan operation are absorbed and attenuated by the structural wall of the second chamber 124, thus significantly improving the operational stability of the equipment under air purification conditions.

[0157] Please refer to the instruction manual attached. Figures 9-11 This embodiment also provides a cleaning device, which is configured in an integrated system with multiple functions, consisting of a handheld cleaning unit 70 and a base station unit 80. The handheld cleaning unit 70, as a movable unit performing cleaning tasks on floors, tabletops, or crevices, can flexibly be selected from various product forms such as a cordless vacuum cleaner, floor scrubber, or handheld sweeper and mop, depending on the actual application scenario. The handheld cleaning unit 70 is configured to dock with the base station unit 80. This docking not only enables the daily storage and power replenishment of the handheld cleaning unit 70, but more importantly, it allows for functional linkage with the base station when the handheld cleaning unit 70 is returned to its original position, integrating mobile cleaning with fixed air purification functions.

[0158] Under this integrated architecture, the air purification device provided in the aforementioned embodiments is integrated into the base station body 80. This integrated design enables the base station body 80 to not only maintain the functional limitations of the handheld cleaning body 70, but also to continuously and efficiently purify indoor air. Furthermore, it directly reuses the built-in drive mechanism 40 and self-cleaning function of the air purification device, autonomously completing the automatic cleaning of large particles of dust and entangled objects on the surface of the filter component 20 without the need for an additional independent cleaning structure.

[0159] In order to centrally manage the sewage discharge needs of different functional modules and optimize the internal space of the whole machine, the base station body 80 is also equipped with a dust collection chamber 81 and an integrated air passage structure 82. The dust collection chamber 81 is fluidly connected to the handheld cleaning body 70 (dust cup or sewage discharge interface) and the purification chamber in the air purifier through the integrated air passage structure 82.

[0160] This structure, which integrates the air purifier and the handheld cleaning unit 70 into a single dust collection channel, achieves the integration of negative pressure power and waste disposal path within the base station body 80. Guided by the integrated airflow structure 82, when the handheld cleaning unit 70 completes cleaning and docks with the base station body 80, the negative pressure source within the base station body 80 draws the dust, hair, and other debris temporarily stored inside the handheld device into the dust collection chamber 81. Similarly, when the air purifier enters cleaning mode, and the drive mechanism 40 moves the filter component 20 to the second position and rotates to remove surface dust, this scattered dust is also uniformly guided by the integrated airflow structure 82 and collected in the same dust collection chamber 81.

[0161] The cleaning equipment provided by this embodiment effectively avoids the need to repeatedly install multiple independent dust collection devices and power supply components inside the base station body 80, reducing the space occupied inside the base station body 80, making its overall structure more compact and reasonable, and also reducing the overall manufacturing cost. During routine maintenance, users only need to periodically empty and clean this single dust collection chamber 81 to simultaneously handle waste from both the handheld cleaning unit 70 and the air purifier, simplifying the maintenance process and improving the ease of use and overall user experience.

[0162] Please refer to the instruction manual attached. Figure 10 In one embodiment, the integrated air passage structure 82 is further provided with a switching valve 83, which is a fluid control component and is configured to selectively open different air passages according to the current operating conditions of the cleaning equipment.

[0163] In terms of specific mechanical structure, the switching valve 83 can be configured with various fluid reversing schemes based on the internal space and cost requirements of the base station body 80. For example, a rotary baffle valve driven by a stepper motor or servo motor can be used, with the motor driving the baffle to flip and switch between two fixed sealed valve seats via a rotating shaft; alternatively, a solenoid reversing valve with faster response speed can be used, utilizing the instantaneous engagement and release of the electromagnet to push and pull the internal cylindrical valve core to block or open different airflow ports. In addition, to further simplify the electrical control logic, it can also be configured as a purely mechanically linked touch-type push rod valve. When the handheld cleaning unit 70 is inserted into a specific docking seat of the base station body 80, the mechanical linkage is pressed down by the weight of the device itself or the insertion action, directly pushing the valve to change the conduction state, and the valve automatically resets when the handheld device is removed.

[0164] In practical applications, when the handheld cleaning unit 70 returns to the base station unit 80 after completing its cleaning task and needs to empty the dust cup, the switching valve 83, under the control of the cleaning equipment's control unit, can open the air passage between the handheld cleaning unit 70 and the dust collection chamber 81, while simultaneously blocking the air passage leading to the purification chamber. At this time, the negative pressure suction force generated by the negative pressure fan inside the base station unit 80 is guided to the handheld cleaning unit 70, thereby quickly removing the dirt inside. Conversely, when the air purifier enters self-cleaning mode, the switching valve 83 opens the air passage between the purification chamber (or specifically the cleaning pipe 50 within the purification chamber) and the dust collection chamber 81, while simultaneously cutting off the air passage on the handheld cleaning unit 70 side. In this state, negative pressure is directed into the purification chamber of the air purifier, thereby capturing and recovering hair and dust detached from the surface of the filter assembly 20.

[0165] This design, which uses valve 83 to control the selective flow of airflow through multiple paths, achieves efficient utilization of suction energy within the base station and physical error-proofing. Firstly, by switching paths exclusively, it ensures that the negative pressure provided by the base station is completely concentrated on a single cleaning target at the same time, avoiding airflow diversion and suction loss caused by multiple air paths being constantly open. This guarantees the efficiency and thoroughness of both handheld dust collection and air purifier self-cleaning processes.

[0166] Secondly, the physical isolation function of the switching valve 83 fundamentally cuts off the connection between the two independent cleaning systems, effectively preventing the dirt sucked up by the handheld cleaning unit 70 from flowing back into the purification chamber when the negative pressure fluctuates, thus protecting the air purifier core filter component 20 from secondary pollution or accidental damage.

[0167] In addition, the use of an integrated air circuit structure 82 in conjunction with a switching valve 83 to replace two completely independent air ducts and negative pressure motor systems greatly simplifies the pipe layout and space redundancy inside the base station body 80, making the internal architecture of the whole machine more compact.

Claims

1. An air purification device, characterized in that, include: The equipment casing contains a purification chamber. A filter assembly is rotatably disposed within the purification chamber, and the filter assembly has an air inlet and an air outlet that are interconnected. An air purifier fan is installed inside the purification chamber, with the air inlet of the air purifier fan corresponding to the air outlet of the filter assembly. A drive mechanism is pulsatically connected to the filter assembly, and the drive mechanism is configured to drive the filter assembly to move between a first position close to the air purifier fan and a second position far from the air purifier fan; When the filter assembly is in the first position, the filter assembly is connected to the air purifier fan; When the filter assembly is in the second position, the filter assembly is separated from the air purifier fan.

2. The air purification device according to claim 1, characterized in that, When the filter assembly is in the second position, the drive mechanism is also configured to allow the filter assembly to rotate within the purification chamber.

3. The air purification device according to claim 1, characterized in that, The drive mechanism includes: A drive unit has a fixed end and an output end, and the drive unit is fixed relative to the device housing through the fixed end; A transmission assembly is movably disposed within the housing of the device, one end of the transmission assembly being connected to the output end of the drive unit, and the other end of the transmission assembly being connected to the filter assembly; The drive unit is configured to drive the transmission component to move along a first direction or a second direction; when the transmission component moves along the first direction, the transmission component drives the filter component to move toward the first position; when the transmission component moves along the second direction, the transmission component drives the filter component to move toward the second position.

4. The air purification device according to claim 3, characterized in that, The filter assembly includes a filter body and a tray for supporting the filter body, the tray being connected to the device housing via a one-way bearing; The transmission assembly includes: A turntable is rotatably disposed on the device housing in either the first or the second direction, and the turntable is connected to the output end of the drive unit. A lifting linkage structure is disposed between the turntable and the tray; When the turntable rotates along the first direction, the one-way bearing locks the rotation of the tray relative to the equipment housing, so that the turntable drives the tray to move to the first position through the lifting linkage structure; When the turntable rotates in the second direction, the one-way bearing releases the tray, so that the turntable can drive the tray to move to the second position through the lifting linkage structure and drive the tray to rotate.

5. The air purification device according to claim 4, characterized in that, The lifting linkage structure includes: A pin is fixedly installed on the side of the turntable facing the tray; A guide groove is formed in the tray, and the pin extends into the guide groove and can slide along the extension direction of the guide groove; The sidewall of the guide groove is provided with an inclined guide surface, which extends along the circumference of the tray and is inclined away from the turntable from one end of the guide groove to the other end. When the turntable rotates along the first direction, the pin slides from the lower position to the higher position along the inclined guide surface to abut against the inclined guide surface and drive the tray to move along its axial direction to the first position; when the turntable rotates along the second direction, the pin slides from the higher position to the lower position along the inclined guide surface to drive the tray to move to the second position and abut against the end of the guide groove to drive the tray to rotate.

6. The air purification device according to claim 4, characterized in that, The lifting linkage structure has at least three parts, which are evenly arranged along the circumference of the turntable.

7. The air purification device according to claim 4, characterized in that, The tray is provided with a guide ring extending toward the turntable, and the turntable has an annular guide cavity into which the guide ring extends and slides. The lifting linkage structure is disposed between the guide ring and the annular guide cavity.

8. The air purification device according to claim 4, characterized in that, The turntable has a gear ring on its inner circumference, and the output end of the drive unit has a drive gear that meshes with the gear ring.

9. The air purification device according to any one of claims 1-8, characterized in that, The filter assembly has a sealing ring on the side facing the air purifier fan, which is used to press and seal with the air purifier fan at the first position.

10. The air purification device according to any one of claims 1-8, characterized in that, Also includes: A cleaning pipeline is provided inside the purification chamber, and the cleaning pipeline is provided with a first dust suction section facing the filter assembly; When the filter assembly is in the second position, the filter assembly is configured to allow rotation relative to the cleaning duct so that the first suction unit adsorbs and cleans the surface of the filter assembly.

11. The air purification device according to any one of claims 1-8, characterized in that, Also includes: A paddle assembly is disposed within the purification chamber, and the paddle assembly is in contact with the surface of the filter assembly; When the filter assembly is in the second position, the filter assembly is configured to allow rotation relative to the paddle assembly so that the paddle assembly paddles the surface of the filter assembly.

12. The air purification device according to any one of claims 1-8, characterized in that, The device housing includes: A base for supporting the filter assembly, and the drive mechanism is disposed within the base; A cover is disposed on the base and surrounds the base to form the purification chamber.

13. The air purification device according to claim 12, characterized in that, The enclosure is provided with a first chamber and a second chamber, which are connected by an air vent. The filter assembly is disposed in the first chamber, and its air outlet is oriented toward the air vent. The air purifier fan is disposed in the second chamber and fixedly connected to the chamber wall of the second chamber, with the air inlet of the air purifier fan facing the air outlet.

14. A cleaning device, characterized in that, include: The handheld cleaning unit and the base station unit are provided, wherein the handheld cleaning unit can be connected to the base station unit, and the base station unit integrates the air purification device as described in any one of claims 1-13; The base station body is also equipped with a dust collection chamber and an integrated air passage structure. The dust collection chamber is connected to the handheld cleaning body and the purification chamber in the air purifier through the integrated air passage structure.

15. The cleaning equipment according to claim 14, characterized in that, The integrated air path structure is equipped with a switching valve, which is configured to selectively open the air path between the handheld cleaning unit and the dust collection chamber, or the air path between the purification chamber and the dust collection chamber.

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