Air purifier

Abstract

The invention relates to the technical field of air purification equipment, and discloses an air purifier, an air inlet is formed in the middle of the air purifier, and an upper air outlet and a lower air outlet are formed in the top and the bottom of the air purifier respectively; when the air purifier is in a working state, external air enters the air purifier from the air inlet in the middle and is blown out from the upper air outlet and the lower air outlet after being filtered and purified. The air flow path design of middle air inlet and top and bottom air outlet is adopted, and compared with a purification mode of top and bottom air inlet and middle air outlet, the problem that dust, hair and other foreign matter on the ground are easily and directly sucked into a filter screen to cause blockage of the filter screen due to bottom air inlet can be effectively avoided; a surrounding type airflow purification path can be formed in a room, purified air evenly surrounds a user, direct blowing interference is thoroughly eliminated, the air purifier is particularly suitable for sleep, office and other mute scenes, and the comfort level of the user is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of air purification equipment technology, specifically to air purifiers. Background Technology

[0002] Air purifiers, as devices used to improve indoor air quality, typically use fans to drive airflow and internal filters to adsorb or convert pollutants. Their air intake and exhaust methods directly affect purification efficiency and user experience.

[0003] Traditional air purifiers often employ a single-sided or unidirectional air intake structure, which restricts airflow and can easily create dead zones when cleaning large or complex spaces, thus limiting purification efficiency. To improve air circulation, some air purifiers with multi-directional air intake structures have emerged, such as designs that allow simultaneous air intake from the bottom and top, and air outlet from the middle. This type of design increases the air intake area to some extent, accelerates the indoor air circulation rate, and thus improves the purification capacity per unit time.

[0004] However, the above structure still has significant limitations. First, when the bottom air inlet draws in air from near the ground, it easily draws in larger particles such as dust and hair that have settled on the ground directly into the machine. These particles tend to accumulate quickly on the filter surface, increasing air resistance, leading to increased energy consumption, and accelerating filter clogging, thus shortening its effective lifespan. Second, while the central air outlet design is beneficial for air diffusion in the middle of the room, the airflow direction is relatively concentrated and directly at the height of the breathing zone when a person is sitting or lying down. In scenarios requiring continuous quiet and a draft-free environment, such as sleeping or working, the direct airflow can easily cause discomfort and disturb the user's rest or work, resulting in a poor user experience. Summary of the Invention

[0005] In view of this, the present invention provides an air purifier to solve the problem that the air intake and exhaust methods of existing air purifiers are poorly designed, easily sucking in ground dust and blowing it directly at the user.

[0006] This invention provides an air purifier, which has an air inlet in the middle, and an upper air outlet and a lower air outlet at the top and bottom, respectively. When the air purifier is in operation, outside air enters the air purifier through the middle air inlet, is filtered and purified, and then blown out from the top air outlet and the bottom air outlet respectively. Beneficial Effects: This application adopts an airflow path design with central air intake and top and bottom air outlets. Compared to the purification method of top and bottom air intake and central air outlet, it effectively avoids the problem of bottom air intake, which easily draws dust, hair, and other foreign objects from the ground directly into the filter, causing filter blockage and even affecting filter performance and lifespan. This reduces the frequency of filter cleaning, extends filter life, and lowers maintenance costs. On the other hand, traditional central air outlet designs often produce a strong direct airflow sensation, which can easily cause user discomfort or even interfere with concentration in quiet scenarios such as sleeping or working. However, the central air intake and top and bottom air outlet design of this application allows purified air to be delivered from the top and bottom simultaneously, forming a "surround" airflow purification path in the room. This ensures that purified air is evenly distributed around the user, completely eliminating direct airflow interference. It is particularly suitable for quiet scenarios such as sleeping and working, achieving "imperceptible purification," significantly improving user comfort, and enhancing the adaptability of the air purifier in various environmental applications to meet the needs of different users in various usage scenarios.

[0007] In one alternative implementation, the air purifier includes: The air inlet, upper air outlet, and lower air outlet are all located on the outer casing; The fan assembly is located inside the housing. The fan assembly is used to drive the outside air into the housing through the air inlet and then flow to the upper air outlet and the lower air outlet respectively.

[0008] In the above embodiments, the fan assembly is used as the direct power source to form a "surround airflow path". It can pressurize the air to be purified drawn in by the middle air inlet and send it out from the top and bottom air outlets respectively.

[0009] In one alternative implementation, the wind turbine assembly includes: The upper fan assembly is located at the top of the housing and is used to drive the outside air to flow from the air inlet to the air outlet. The down fan assembly is located at the top of the housing and is used to drive external air to flow from the air inlet to the air outlet.

[0010] Beneficial effects: The upper fan assembly and the lower fan assembly form two completely independent drive systems that can be controlled and adjusted separately, thereby enabling multiple working modes, such as sleep mode that only uses upper air outlet and powerful mode that uses upper and lower air outlets simultaneously, which greatly increases the product's functional diversity and scenario adaptability.

[0011] In one alternative implementation, the air purifier further includes: A filter module is installed at the air inlet. The filter module includes a filter screen and is located between the upper fan assembly and the lower fan assembly. The top and bottom of the filter module have an upper purification outlet and a lower purification outlet, respectively. The upper fan assembly is located between the upper air outlet and the upper air outlet, and the lower fan assembly is located between the lower air outlet and the lower air outlet. After entering the housing through the air inlet, the outside air is filtered by the filter module and then flows to the upper fan assembly and the lower fan assembly from the upper purification outlet and the lower purification outlet, respectively.

[0012] Beneficial effects: By installing a filter module at the air inlet and adopting a cylindrical filter design, it can be adapted to the air inlet arranged around the perimeter of the outer shell, resulting in a larger filtration area and the ability to handle a larger air volume in the same volume. At the same time, it provides a structural carrier for realizing filter rotation and supporting advanced maintenance functions such as filter self-cleaning and UV sterilization. Moreover, only one filter module needs to be installed at the air inlet, compared to the existing two independent filter modules required for top and bottom air inlets. This simplifies the overall structure, production and assembly process, and reduces material costs and the complexity of filter maintenance.

[0013] In one alternative implementation, the filtering module further includes: The filter support structure has an internal installation space for installing the filter, and the filter is rotatably installed in the installation space. The upper fan assembly is detachably mounted above the filter support structure, and the lower fan assembly is detachably mounted below the filter support structure.

[0014] Beneficial effects: The filter support structure adopts a frame structure with a space-saving design, which facilitates daily cleaning or filter replacement, reducing maintenance costs. Furthermore, the upper and lower fan components are installed above and below the filter support structure, making full use of vertical space, making the overall structure more compact, improving space utilization, and suitable for space-constrained applications. The filter support structure can not only accommodate and install the filter, but also serve as a support carrier for the upper and lower fan components, making it multi-functional and simplifying the structure.

[0015] In one alternative implementation, the air purifier further includes: A dust removal device, installed on the filter support structure, is used to clean the filter screen; the dust removal device includes: The vacuum cleaner housing has a first opening on its side wall; The suction pipe is rotatably disposed within the suction housing. The suction pipe includes at least two sub-pipe segments arranged sequentially along the axial direction. Each sub-pipe segment is provided with a suction port. One end of the suction pipe along the axial direction is provided with a dust outlet. The suction ports on the at least two sub-pipe segments are arranged at different angles in the circumferential direction. There is a gap between the suction pipe and the suction housing. The suction port has a suction position communicating with a first opening and a sealing position that is offset from the first opening. Negative pressure structure, connected to the dust outlet; A drive structure, connected to the suction pipe, is used to drive the suction pipe to rotate so that the suction ports on at least two sub-pipe segments are sequentially connected to the first opening 411. A sealing element, connected inside the vacuum cleaner housing and rotatably engaged with the vacuum cleaner hose, is used to seal and divide the space into at least two sub-spaces, each sub-space corresponding to a sub-pipe segment.

[0016] Beneficial effects: The dust removal device can clean the dust and pollutants on the filter surface, improve the cleanliness of the filter, and thus ensure the air purification effect. The dust removal device's suction pipe employs a design with at least two sub-pipe sections arranged sequentially along the axial direction, allowing at least two suction ports to clean different positions on the filter screen circumferentially. A drive structure rotates the suction pipe, causing the suction ports on the at least two sub-pipe sections to sequentially connect with the first opening. This allows different suction ports to reach their respective suction positions connected to the first opening, thus sequentially activating the suction ports. Other suction ports remain in sealed positions offset from the first opening. The suction ports in their respective suction positions generate negative pressure under the influence of the negative pressure structure, effectively sucking up and cleaning dust and contaminants from the filter screen surface. The sealing element effectively separates the space between the suction pipe and the suction housing, preventing gas flow within this space and avoiding gas flow between suction ports not in their suction positions. This ensures that most gas enters only from the suction ports in their suction positions and exits from the dust outlet, preventing the sealed, inactive suction ports from affecting the active suction ports and guaranteeing the suction effect of the suction pipe.

[0017] In one alternative implementation, the air purifier further includes: The ultraviolet sterilization module is detachably installed on the filter support structure and located on one side of the filter, and is used to sterilize the filter with ultraviolet light. The ultraviolet sterilization module includes: Lamp holder; The ultraviolet lamp has multiple lamps, which are arranged at intervals along the length of the lamp holder, and the irradiation range of the multiple ultraviolet lamps covers the filter in the height direction of the filter. Baffle assembly, which is located on both sides of multiple ultraviolet lamps.

[0018] Beneficial effects: Multiple UV lamps cover the filter in the vertical direction, ensuring complete UV light coverage. Combined with the filter's rotation around its central axis, this allows the UV light to scan the entire filter surface, achieving dynamic and comprehensive disinfection and avoiding static irradiation blind spots. Baffle assemblies on both sides of the UV lamps prevent UV light leakage, blocking reflected UV light from reaching the outside of the air purifier and thus avoiding harm to humans. Furthermore, the UV light is concentrated on the inner side of the baffle assemblies, improving disinfection efficiency.

[0019] In one alternative implementation, the wind turbine assembly includes: The fan casing has a first outlet and a second outlet at its upper and lower ends, respectively, and an airflow inlet at the middle of the fan casing corresponding to the air inlet. The fan includes a motor and a fan blade. The motor drives the fan blade to rotate so that external air enters the fan casing through the air inlet and flows to the first outlet and the second outlet respectively, and is then blown out through the upper outlet and the lower outlet. Beneficial effects: By setting the first and second outlets at the upper and lower ends of the fan casing respectively, the airflow can be split into the upper and lower air outlets after entering the fan casing. This allows a set of fan components to simultaneously discharge air to both the upper and lower air outlets, simplifying the structure and saving costs.

[0020] In one alternative implementation, the air purifier further includes: The filtration module includes a first filter screen disposed at a first outlet and a second filter screen disposed at a second outlet.

[0021] Beneficial effects: By setting a first filter at the first outlet and a second filter at the second outlet, the air coming out from the first outlet and the second outlet can be filtered and purified respectively, ensuring the air purification effect. The filter module, by adopting the above-mentioned design of the first filter and the second filter, has a simple structure and is easy to install.

[0022] In one alternative implementation, the air purifier further includes: The display module is mounted on the top of the housing, which is open at the top to form an upper air outlet; An air vent grille is installed inside the upper air vent. The air vent grille is circular, and an opening is formed in the middle of the air vent grille to allow the display module to be exposed.

[0023] Beneficial effects: By setting the air outlet grille to be ring-shaped, and the opening in the middle of the ring-shaped air outlet grille serving as a clearance opening for the display module to be exposed, the air outlet and display functions do not interfere with each other, while the clearance opening can also meet the heat dissipation requirements of the display module. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the external structure of the air purifier in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the air purifier in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the air purifier after the filter has been removed in an embodiment of the present invention; Figure 4 This is a schematic diagram of the airflow direction of the air purifier in an embodiment of the present invention; Figure 5 This is an exploded view of the air purifier in an embodiment of the present invention; Figure 6 This is a schematic diagram of the air purifier after removing the outer casing in an embodiment of the present invention; Figure 7 for Figure 6 A schematic diagram of the structure after removing the filter screen; Figure 8 This is an exploded view of the lower fan assembly, the bottom light assembly, and the support base in an embodiment of the present invention; Figure 9 This is an exploded view of the upper fan assembly in an embodiment of the present invention; Figure 10 This is a schematic diagram of one embodiment of the UV sterilization module and filter screen in this invention. Figure 11 This is a schematic diagram of the ultraviolet sterilization module in an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of an air purifier with only one fan assembly in an embodiment of the present invention; Figure 13 This is an exploded view of the installation of a dust removal device according to an embodiment of the present invention; Figure 14 for Figure 13 A magnified view of part A in the diagram; Figure 15 for Figure 13 A magnified view of part B in the diagram; Figure 16 This is a schematic diagram of the structure of a pressure plate in a dust removal device according to an embodiment of the present invention; Figure 17 for Figure 16 A magnified view of part of C; Figure 18 This is a schematic diagram of the structure of a cleaning brush of a dust removal device according to an embodiment of the present invention; Figure 19 for Figure 18 A magnified view of part of D; Figure 20 This is a schematic diagram of the structure of the suction pipe of a dust removal device according to an embodiment of the present invention; Figure 21 for Figure 20 A magnified view of part of E in the diagram; Figure 22 This is a schematic diagram of the axial direction of a dust removal device according to an embodiment of the present invention; Figure 23 This is a schematic diagram of a sealing element of a dust removal device according to an embodiment of the present invention; Figure 24 This is a schematic diagram of the structure of a dust removal device according to an embodiment of the present invention; Figure 25 This is a partial structural diagram of an air purifier according to an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures: 10. Outer casing; 100. Air inlet; 101. Upper air outlet; 102. Lower air outlet; 11. Air inlet grille; 12. Air outlet grille; 13. Cover plate; 14. Formaldehyde sensor; 20. Fan assembly; 201. Fan casing; 202. Fan; 21. Upper fan assembly; 211. Second fan; 2111. Second motor; 2112. Second fan blade; 212. Upper air duct; 213. Second support frame; 214. Negative ion generator; 22. Downstream fan assembly; 221. First fan; 2211. First motor; 2212. First fan blade; 222. First bracket; 2220. Flow opening; 2221. Slot; 30. Filter module; 31. Filter screen; 310. Second brush body; 32. Top support assembly; 33. Bottom support assembly; 34. Intermediate support frame; 35. First filter screen; 36. Second filter screen; 40. Dust removal device; 400. Dust collection base; 41. Vacuum cleaner housing; 411. First opening; 412. Second snap-fit ​​part; 413. First housing; 414. Second housing; 42. Suction pipe; 421. Suction port; 422. Dust outlet; 423. Sealing flange; 424. Rib; 43. Negative pressure structure; 431. Dust collection box; 432. Air pump; 433. First connecting pipe; 434. Second connecting pipe; 44. First pressure plate; 441. Second opening; 442. First snap-fit ​​part; 45. Cleaning brush; 451. Cleaning bracket; 452. First brush body; 453. Third opening; 454. Limiting rib; 455. Second limiting post; 46. ​​Drive structure; 461. Elastic element; 462. Drive motor; 463. Transmission unit; 47. Sealing element; 471. Communicating port; 472. First connecting part; 473. Limiting sealing part; 4731. First sealing strip; 4732. Second sealing strip; 48. First fixing plate; 49. Second fixing plate; 491. Connecting joint; 50. Odor removal module; 51. Plasma generator; 511. Mounting frame; 512. Electrode structure; 52. Metal mesh cover; 53. Ozone reduction mesh; 60. Ultraviolet sterilization module; 61. Ultraviolet lamp; 62. Lamp holder; 63. First baffle; 64. Second baffle; 70. Display module; 80. Support base; 90. Bottom light assembly; 91. Light strip bracket; 92. Bottom ambient light strip. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] The following is combined Figures 1 to 25 The following describes embodiments of the present invention.

[0032] According to an embodiment of the present invention, in one aspect, the present invention provides an air purifier, wherein an air inlet 100 is provided in the middle part of the air purifier, and an upper air outlet 101 and a lower air outlet 102 are respectively provided at the top and bottom; when the air purifier is in working condition, external air enters the air purifier from the middle air inlet 100, is filtered and purified, and is blown out from the upper air outlet 101 and the lower air outlet 102 respectively. The air purifier provided in the above embodiments adopts an airflow path design with central air intake and top and bottom air outlets. Compared with the purification method of top and bottom air intake and central air outlet, it can effectively avoid the problem of bottom air intake, which easily sucks in foreign objects such as dust and hair from the ground directly into the filter, causing filter blockage and even affecting filter performance and service life. It reduces the frequency of filter cleaning, extends the filter's service life, and lowers maintenance costs. On the other hand, the traditional central air outlet design usually produces a strong direct airflow, which can easily cause user discomfort or even interfere with concentration in quiet scenarios such as sleeping or working. However, the central air intake and top and bottom air outlet design of this application allows purified air to be delivered from the top and bottom simultaneously, forming a "surround" airflow purification path in the room. This ensures that the purified air is evenly distributed around the user, completely eliminating direct airflow interference. It is particularly suitable for quiet scenarios such as sleeping and working, achieving "imperceptible purification," significantly improving user comfort, and enhancing the adaptability of the air purifier in multiple environmental applications to meet the needs of different users in various usage scenarios.

[0033] In some embodiments, the air inlet 100 is arranged around the middle peripheral wall of the air purifier; the upper air outlet 101 is located on the top surface of the air purifier; and the lower air outlet 102 is arranged around the bottom peripheral wall of the air purifier.

[0034] In the above embodiment, the air inlet 100, through its surrounding design, increases the effective air intake area, allowing more air to be purified to quickly enter the device. This provides a structural basis for achieving a large air volume and a high clean air output ratio, thereby improving the initial purification efficiency of the entire unit. Furthermore, by placing the upper air outlet 101 on the top surface of the air purifier, it facilitates the upward diffusion and natural downward flow of clean air, forming a gentle vertical airflow. The bottom circumferential air outlet design delivers air horizontally to the far end of the room. This combination of upper and lower air outlets creates a uniform and gentle airflow, completely avoiding discomfort caused by direct airflow onto the human body. It is particularly suitable for bedrooms, studies, and other scenarios where quietness and comfort are paramount. In one specific example, the air purifier includes a housing 10 with an open top and an air outlet grille 12 to form an upper air outlet 101. An air inlet 100 and a lower air outlet 102 surround at least two sides of the housing 10.

[0035] In a specific example, the air inlet 100 is located on the back and two sides of the air purifier; the lower air outlet 102 is located on the back and two sides of the air purifier.

[0036] In the above example, by placing the air inlet 100 and the lower air outlet 102 on the back and two sides of the air purifier, instead of the front, the front panel does not need to have a functional air inlet 100 or air outlet, thus maintaining the product's front appearance and cleanliness. In order to facilitate the maintenance and replacement of the filter, deodorization module 50, etc. inside the air purifier, a large disassembly port needs to be opened on the outer shell 10. By placing this disassembly port on the back of the outer shell 10 and installing the air inlet grille 11 on the disassembly port, the structure can be hidden, making it convenient to disassemble and maintain the internal components of the outer shell 10. It can also serve as an air inlet 100 or air outlet for air intake and exhaust, while maintaining a complete and simple appearance, making it easier to integrate into home decoration styles and enhancing the product's aesthetic value.

[0037] In some embodiments, the air purifier includes a fan assembly 20, with an air inlet 100, an upper air outlet 101, and a lower air outlet 102 all disposed in the housing 10; the fan assembly 20 is disposed inside the housing 10, and the fan assembly 20 is used to drive external air into the housing 10 from the air inlet 100 and then flow to the upper air outlet 101 and the lower air outlet 102 respectively.

[0038] In the above embodiment, the fan assembly 20 serves as the direct power source for forming a "surround airflow path," enabling the air to be purified drawn in by the central air inlet 100 to be pressurized and then sent out from the top and bottom air outlets respectively.

[0039] In some embodiments, such as Figure 12As shown, the fan assembly 20 includes a fan housing 201 and a fan 202. The upper and lower ends of the fan housing 201 are respectively provided with a first outlet and a second outlet. The middle part of the fan housing 201 is provided with an airflow inlet corresponding to the air inlet 100. The fan 202 includes a motor and a fan blade. The motor drives the fan blade to rotate so that external air enters the fan housing 201 from the air inlet 100 through the airflow inlet and flows to the first outlet and the second outlet respectively, and is then blown out through the upper outlet 101 and the lower outlet 102. In the above embodiment, by setting a first outlet and a second outlet at the upper and lower ends of the fan housing 201 respectively, the airflow can be diverted to the upper air outlet 101 and the lower air outlet 102 after entering the fan housing 201, thereby realizing the simultaneous discharge of air to the upper and lower air outlets using a set of fan components 20, simplifying the structure and saving costs.

[0040] Specifically, the shape of the fan housing 201 is adapted to the shape of the outer shell 10. For example, the fan housing 201 is cylindrical and cuboid in shape to facilitate docking with the upper air outlet 101 and the lower air outlet 102. An airflow inlet is provided in the middle of the fan housing 201 corresponding to the position of the air inlet 100, and a first outlet and a second outlet are provided on the top and bottom surfaces of the fan housing 201, respectively.

[0041] In the further defined embodiments described above, such as Figure 12 As shown, the air purifier also includes a filter module 30, which includes a first filter 35 disposed at a first outlet and a second filter 36 disposed at a second outlet.

[0042] In the above embodiment, by using the first filter 35 at the first outlet and the second filter 36 at the second outlet, the air coming out from the first outlet and the second outlet can be filtered and purified respectively, ensuring the air purification effect. The filter module 30, by adopting the design of the first filter 35 and the second filter 36, has a simple structure and is easy to install.

[0043] Specifically, the shape and size of the first filter 35 are adapted to the shape and size of the first outlet, and the shape and size of the second filter 36 are adapted to the shape and size of the second outlet.

[0044] Of course, in other alternative embodiments, the filter module 30 can also be disposed in the air inlet 100. For example, the air inlet 100 is disposed on the back of the housing 10, and the filter module 30 is disposed on the back side of the housing 10. The air inlet 100 is disposed on at least two sides of the housing 10, and the filter module 30 is disposed on at least two corresponding sides inside the housing 10. The filter module 30 can be plate-shaped or cylindrical.

[0045] In some embodiments, such as Figures 1 to 4As shown, the fan assembly 20 includes an upper fan assembly 21 and a lower fan assembly 22. The upper fan assembly 21 is located at the top inside the housing 10 and is used to drive external air to flow from the air inlet 100 to the air outlet 101. The lower fan assembly 22 is located at the top inside the housing 10 and is used to drive external air to flow from the air inlet 100 to the air outlet 102.

[0046] In the above embodiments, the upper fan assembly 21 and the lower fan assembly 22 form two completely independent drive systems that can be controlled and adjusted separately, thereby enabling multiple working modes, such as sleep mode using only the upper fan and strong mode using both upper and lower fans, which greatly increases the product's functional diversity and scenario adaptability.

[0047] In some embodiments, the air purifier further includes a filter module 30, which is disposed at the air inlet 100 and located between the upper fan assembly 21 and the lower fan assembly 22. After the outside air enters the housing 10 through the air inlet 100, it is filtered by the filter module 30 and then flows to the upper fan assembly 21 and the lower fan assembly 22 respectively.

[0048] In the above embodiment, the filter module 30 installed at the air inlet 100 can effectively remove particulate pollutants such as PM2.5, pollen, and dust from the air, which is fundamental to ensuring the quality of the exhaust air. Furthermore, only one filter module 30 needs to be installed at the air inlet 100, which simplifies the overall structure, production and assembly process, and reduces material costs and the complexity of filter maintenance compared to existing systems that require two separate filter modules 30 for both top and bottom air inlets.

[0049] In some embodiments, the filter module 30 includes a filter screen 31, which is cylindrical. The top and bottom of the filter module 30 are respectively formed with an upper purification outlet and a lower purification outlet. The upper fan assembly 21 is disposed between the upper purification outlet and the upper air outlet 101, and the lower fan assembly 22 is disposed between the lower purification outlet and the lower air outlet 102. After the outside air enters the housing 10 through the air inlet 100, it is filtered by the filter module 30 and then flows to the upper fan assembly 21 and the lower fan assembly 22 from the upper purification outlet and the lower purification outlet, respectively.

[0050] In the above embodiments, the cylindrical filter 31 is designed to fit the air inlet 100 arranged circumferentially around the outer shell 10, resulting in a larger filtration area and the ability to handle a larger air volume in the same volume. At the same time, it provides a structural carrier for realizing filter rotation and supporting advanced maintenance functions such as filter self-cleaning and UV sterilization.

[0051] In some embodiments, the filter module 30 further includes a filter support structure, which forms an installation space for installing the filter 31, and the filter 31 is rotatably installed in the installation space; the upper fan assembly 21 is detachably installed above the filter support structure, and the lower fan assembly 22 is detachably installed below the filter support structure.

[0052] In the above embodiments, the filter support structure adopts a frame structure with a space-accommodating design, which facilitates daily cleaning or replacement of the filter, reduces maintenance costs, and the upper fan assembly and lower fan assembly are installed above and below the filter support structure, making full use of vertical space, making the overall structure more compact, improving space utilization, and suitable for space-constrained application scenarios. The filter support structure can not only accommodate and install the filter, but also serve as a support carrier for the upper fan assembly and lower fan assembly, making it multi-functional and simplifying the structure.

[0053] In some embodiments, the air purifier further includes an odor removal module 50, which is disposed at the upper air outlet 101 and / or the lower air outlet 102. The odor removal module 50 includes a plasma generator 51, which can generate plasma by discharging to decompose odors in the air.

[0054] In the above embodiments, the plasma generator 51 installed at the upper air outlet 101 or the lower air outlet 102 can generate high-density plasma, which can catalytically degrade harmful gases through discharge, thereby deeply decomposing gaseous pollutants such as residual odors, formaldehyde, and TVOCs in the clean air to be discharged, and completely eliminating odors. This makes up for the shortcomings of traditional filters, which are mainly for particulate matter and have limited removal efficiency for gaseous pollutants, and expands the purification capabilities of air purifiers.

[0055] In a specific example, the deodorization module 50 is located at the lower air outlet 102, while the upper air outlet 101 is not equipped with the deodorization module 50. This design ensures that the air coming out of the upper air outlet 101 does not undergo additional purification and deodorization, thus maximizing the purification performance and working efficiency of the air purifier in deodorization mode.

[0056] In some embodiments, the downdraft assembly 22 includes a first fan 221 and a first bracket 222 for mounting the first fan 221; a plasma generator 51 is mounted on the outer periphery of the first bracket 222 and corresponds to the downdraft outlet 102, and the plasma generator 51 and the first bracket 222 enclose each other to form a downdraft duct; the downdraft duct connects the air inlet 100 and the downdraft outlet 102, and the first fan 221 is located inside the downdraft duct. In the above embodiments, by integrating the deodorization module 50 with the lower fan assembly 22, the first bracket 222 not only fixes the fan but also serves as the duct wall and mounting base for the deodorization module 50, achieving modular and integrated design of functional components. This greatly saves internal space, making the overall layout more reasonable and compact, and increasing space utilization. Furthermore, by directly placing the plasma generator 51 inside the lower duct and facing the lower air outlet 102, it ensures that all air blown from the bottom passes through the plasma area, thereby guaranteeing the effectiveness and consistency of the deodorization process.

[0057] Specifically, the first fan 221 includes a first motor 2211 and a first fan blade 2212. The first motor 2211 and the first fan blade 2212 are connected. The first motor 2211 can drive the first fan blade 2212 to rotate, so as to drive the air entering from the air inlet 100 to flow down the air outlet 102 along the first air duct. The first motor 2211 is detachably installed and fixed in the first bracket 222, and the first fan blade 2212 is installed on the output shaft above the first motor 2211. The plasma generator 51 has a discharge gap for airflow. When the plasma generator 51 is installed on the first bracket 222, the plasma generator 51 is located on the airflow path from the air inlet 100 to the lower air outlet 102, and the plasma generator 51 has a discharge gap for airflow and discharge purification.

[0058] In some embodiments, the lower air outlet 102 is distributed on at least two sides of the housing 10; at least two sets of plasma generating devices 51 are provided, and the at least two sets of plasma generating devices 51 are arranged on at least two sides of the first bracket 222 corresponding to the lower air outlet 102; the at least two sets of plasma generating devices 51 and the first bracket 222 enclose a lower air duct that is closed at the bottom, draws air at the top, and discharges air from at least two sides.

[0059] In the above embodiment, the lower air outlet 102 adopts a design with air outlets on at least two sides, which makes the bottom air supply direction wider, can push clean air to fill the entire bottom space of the room more quickly, reduce purification dead corners, improve air replacement efficiency, and achieve multi-directional and uniform bottom air outlet. Furthermore, plasma generators 51 are configured in multiple air outlet directions, ensuring effective odor decomposition regardless of the direction of airflow, thus achieving full coverage of odor removal in the bottom air outlet area and significantly enhancing the product's ability to cope with complex odor environments. In addition, the "closed bottom, suction top, multi-directional air outlet" duct structure formed by the plasma generator 51 and the first support 222 is highly efficient and reasonable, conforming to the working characteristics of a centrifugal fan, effectively guiding airflow, gathering purified air from the middle, and uniformly pressing it out from multiple directions.

[0060] In one specific example, the deodorization module 50 is plugged into the first bracket 222 for easy disassembly and maintenance.

[0061] In a specific example, the lower air outlet 102 is provided on three sides of the housing 10, the mounting bracket 511 is provided with three flow openings 2220, and the plasma generator 51 has three sets. The three sets of plasma generators 51 are installed at the three flow openings 2220 to catalytically degrade harmful gases, odors, etc. in the air flowing through the flow openings 2220 through discharge.

[0062] In some embodiments, the first bracket 222 is a frame structure, and the first bracket 222 is provided with an overflow opening 2220 on one side corresponding to the lower air outlet 102; a slot 2221 is formed on the first bracket 222, and the plasma generator 51 is inserted into the slot 2221 and corresponds to the overflow opening 2220.

[0063] In the above embodiment, the frame-type first bracket 222 adopts a slot-type design, which facilitates the insertion and removal of the plasma generator 51 as an independent module on the first bracket 222. This not only ensures a stable and reliable connection but also greatly simplifies the production and assembly process, making it easier for users or maintenance personnel to replace or maintain the plasma generator 51, reducing after-sales service costs, and facilitating production and maintenance. Furthermore, the slot structure design enables precise positioning, ensuring the accuracy and consistency of the plasma generator 51's installation position, so that its air outlet surface is precisely aligned with the flow opening 2220 on the bracket, guaranteeing smooth airflow.

[0064] In some embodiments, the plasma generating device 51 includes a mounting frame 511 and a plurality of electrode structures 512, the plurality of electrode structures 512 being arranged at intervals on the mounting frame 511 along the length direction of the mounting frame 511; there is a discharge gap between two adjacent electrode structures 512 and between the electrode structure 512 and the mounting frame 511 for gas flow.

[0065] In the above embodiment, a large plasma generation area can be formed by multiple electrode structures 512 spaced apart along the length of the mounting frame 511, increasing the plasma reaction area and improving processing efficiency. Furthermore, the multiple electrode structures 512 allow airflow to pass through these dense discharge gaps as it flows from the air inlet 100 to the air outlet 102, increasing the probability and time for pollutants to collide with high-energy plasma, resulting in more complete and efficient odor decomposition. In addition, the design of the discharge gaps allows airflow to pass through normally, avoiding excessive resistance to the air duct caused by overly dense structures, which could affect the overall airflow.

[0066] In some embodiments, the deodorization module 50 further includes a metal mesh cover 52, which is disposed on the side of the plasma generator 51 near the lower air outlet 102. The metal mesh cover 52 is grounded, and the metal mesh cover 52 is provided to prevent excessive plasma generated by the plasma generator 51 from overflowing.

[0067] In some embodiments, the deodorization module 50 further includes an ozone reduction mesh 53. A metal mesh cover 52 is disposed between the plasma generator 51 and the ozone reduction mesh 53. The ozone reduction mesh 53 can effectively prevent excessive ozone leakage generated by the discharge of the plasma generator 51.

[0068] Furthermore, along the airflow direction, the plasma generator 51, the metal mesh cover 52, and the ozone reduction mesh 53 are arranged sequentially. The first support 222 is provided with a sliding groove for installing the metal mesh cover 52 and the ozone reduction mesh 53. The metal mesh cover 52 and the ozone reduction mesh 53 are slidably installed in the sliding groove from the side of the first support 222. This design facilitates the disassembly and maintenance of the metal mesh cover 52 and the ozone reduction mesh 53.

[0069] In some alternative embodiments, two sets of partition ribs can be provided in the slot 2221 of the first bracket 222 to divide the space into three slots, which are respectively used to install the plasma generator 51, the metal mesh cover 52 and the ozone reduction mesh 53.

[0070] In some embodiments, the upper fan assembly 21 includes a second fan 211, a second bracket 213 for mounting the second fan 211, and an upper air duct 212; the inlet end of the upper air duct 212 is connected to the upper purification outlet of the filter module 30, and the outlet end is connected to the upper air outlet 101; the second fan 211 is disposed inside the upper air duct 212; the second bracket 213 is installed on the side of the upper air duct 212 away from the filter module 30.

[0071] Specifically, the second fan 211 includes a second motor 2111 and a second fan blade 2112. The second motor 2111 is connected to the second fan blade 2112 and can drive the second fan blade 2112 to rotate, so that the airflow flows from the air inlet 100 to the air outlet 101.

[0072] In some embodiments, the air purifier further includes an ultraviolet sterilization module 60, which is detachably mounted on the filter support structure and located on one side of the filter for ultraviolet sterilization of the filter. In the above embodiments, by setting the filter 31 as a rotatable cylindrical structure and placing the ultraviolet sterilization module 60 on one side, the entire outer surface of the rotating filter 31 can be uniformly irradiated 360 degrees without dead angles, ensuring thoroughness and efficiency of sterilization and disinfection, and effectively inhibiting bacterial growth. By detachably fixing the ultraviolet sterilization module 60 to this support structure, the replacement operation when the ultraviolet sterilization module 60 reaches the end of its lifespan or requires maintenance is greatly facilitated, reducing after-sales maintenance costs and improving product maintainability.

[0073] In some embodiments, the ultraviolet sterilization module 60 includes a lamp holder 62 and an ultraviolet lamp 61. The lamp holder 62 extends along the length direction of the filter 31, and the extension length is not less than the length of the filter 31. There are multiple ultraviolet lamps 61, which are arranged at intervals along the length direction of the lamp holder 62, and the irradiation range of the multiple ultraviolet lamps 61 in the height direction of the filter 31 covers the filter 31.

[0074] In the above embodiment, by setting the length of the lamp holder 62 to be no less than the length of the filter 31, and using multiple ultraviolet lamps 61 arranged at intervals along its length, the irradiation range of the multiple ultraviolet lamps 61 in the height direction of the filter covers the filter, ensuring that the ultraviolet light can cover the entire effective filtration height of the filter 31, avoiding the problem of incomplete sterilization in local areas of the filter due to insufficient irradiation length, ensuring that there are no dead corners in the longitudinal sterilization of the filter, and the interval arrangement of multiple lamp beads can form a continuous and uniform ultraviolet light field on the surface of the filter. Combined with the rotation of the filter, every point of the filter can receive a sufficient amount of ultraviolet radiation dose, thereby greatly improving the reliability and uniformity of sterilization.

[0075] In some embodiments, the lamp holder 62 has a strip-shaped structure and includes a front plate and a rear shell that interlock with each other. The front plate and the rear shell form a mounting cavity for mounting the ultraviolet lamp 61. The front plate has an opening corresponding to the ultraviolet lamp 61 so that the ultraviolet lamp 61 can be exposed and covered onto the filter 31.

[0076] In some embodiments, the ultraviolet sterilization module 60 further includes baffle assemblies disposed on both sides of the plurality of ultraviolet lamps 61. In this embodiment, the irradiation range of the plurality of ultraviolet lamps 61 covers the filter screen in the height direction. Therefore, in the height direction, the ultraviolet light emitted by the ultraviolet lamps 61 can fully cover the filter screen 31. With the filter screen 31 rotating around its central axis, the ultraviolet light can scan the entire surface of the filter screen 31, achieving dynamic and comprehensive sterilization and avoiding static irradiation blind spots. By setting baffle assemblies on both sides of the plurality of ultraviolet lamps 61, the baffle assemblies can prevent ultraviolet light leakage and block the ultraviolet light reflected from the filter screen 31 from irradiating the outside of the air purification device, thereby avoiding harm to the human body. Furthermore, the ultraviolet light is concentrated on the inner side of the baffle assembly, which can improve the sterilization efficiency.

[0077] In some embodiments, such as Figure 10 and Figure 11 As shown, the baffle assembly includes a first baffle 63, which is disposed on both sides of the plurality of ultraviolet lamps 61 and perpendicular to the lamp holder 62. The height of the first baffle 63 is not less than the effective filtration height of the filter screen 31. The first baffle 63 can reflect light, and there is a gap between the first baffle 63 and the surface of the filter screen 31.

[0078] In the above embodiment, the first baffle 63 is disposed on both sides of the plurality of ultraviolet lamps 61 and perpendicular to the lamp holder 62. The height of the first baffle 63 is not less than the effective filtration height of the filter 31. Therefore, the first baffle 63 can prevent ultraviolet light leakage and block the ultraviolet light reflected from the filter from shining on the outside of the air purification device, thereby avoiding harm to the human body. The first baffle 63 can reflect light, so after the ultraviolet light reflected from the filter shines on the first baffle 63, the first baffle 63 can reflect the ultraviolet light back onto the filter 31, thereby ensuring the disinfection effect. The first baffle 63 has a gap with the surface of the filter 31, which can ensure that the first baffle 63 will not interfere with the rotation of the filter and ensure that the filter can rotate smoothly.

[0079] In some embodiments, the baffle assembly further includes a second baffle 64, which is disposed on both sides of the lamp holder 62. The first baffle 63 is located between the two second baffles 64, so the height of the second baffle 64 is not less than the effective filtration height of the filter screen 31. The angle between the second baffle 64 and the plane where the lamp holder 62 is located is an acute angle. The second baffle 64 can reflect light, and there is a gap between the second baffle 64 and the surface of the filter screen.

[0080] In the above embodiment, the second baffle 64 is disposed on both sides of the lamp holder 62, and the first baffle 63 is located between the two second baffles 64. The angle between the second baffle 64 and the plane where the lamp holder 62 is located is an acute angle. The second baffle 64 can further prevent ultraviolet light leakage and block the ultraviolet light reflected from the filter 31 from shining on the outside of the air purification device, thereby avoiding harm to the human body. The second baffle 64 can reflect light, so the ultraviolet light emitted by the ultraviolet lamp 61 passes through the gap between the first baffle 63 and the filter 31 and shines on the filter 31. After being reflected by the filter 31 and shining on the second baffle 64, the second baffle 64 can reflect the ultraviolet light back onto the filter, thereby ensuring the disinfection effect. The gap between the surface of the second baffle 64 and the filter 31 can ensure that the second baffle 64 will not interfere with the rotation of the filter 31, ensuring that the filter can rotate smoothly.

[0081] In some embodiments, the first baffle 63 and the second baffle 64 include a substrate and a reflective layer disposed on the surface of the substrate.

[0082] In the above embodiments, by providing a reflective layer on the surface of the substrate, the reflective effect of the first baffle 63 and the second baffle 64 can be ensured.

[0083] In some embodiments, the reflective layer has micron-sized pits.

[0084] In the above embodiments, the reflective layer is provided with micron-level pits, which can realize controlled diffuse reflection of reflected light, so that after secondary reflection by the first baffle 63 and the second baffle 64, a more uniform irradiance distribution is formed on the filter surface.

[0085] In some embodiments, the reflective layer is an aluminum coating.

[0086] In the above embodiments, the reflective layer is an aluminum coating, which can improve the reflectivity, with an ultraviolet light reflectivity of ≥88% at a wavelength of 275nm.

[0087] In some embodiments, the filter support structure includes a bottom support component 33 and a top support component 32, and an intermediate support frame 34 disposed between the bottom support component 33 and the top support component 32. The bottom support component 33, the top support component 32 and the intermediate support frame 34 together enclose an installation space for accommodating the filter 31. The bottom support component 33 and the top support component 32 are respectively provided with axial mounting grooves. The two ends of the lamp holder 62 are respectively inserted into the axial mounting grooves of the bottom support component 33 and the top support component 32 and fixed by screws. In the above embodiments, by placing the lamp holder 62 within the axial mounting grooves on the bottom support component 33 and the top support component 32 respectively, it can be ensured that the lamp holder 62 and the filter are installed coaxially, reducing eccentricity. Furthermore, the two ends of the lamp holder 62 are first inserted into the axial mounting grooves for initial positioning, and then secured with screws, ensuring precise alignment and mechanical strength of the connection, preventing displacement due to vibration, and thus guaranteeing the stability of the sterilization effect of the ultraviolet sterilization module 60.

[0088] Specifically, the axial mounting groove on the bottom support component 33 is open at least on its top surface, and the axial mounting groove on the top support component 32 is open at least on its bottom surface. Preferably, the outer peripheral surfaces of the axial mounting grooves of the bottom support component 33 and the top support component 32 are also open. This design facilitates the installation and fixing of the lamp holder 62 by pushing it into the two axial mounting grooves from the openings on the outer peripheral side of the filter support structure after the filter support structure is assembled. More preferably, at least one axial mounting groove is provided with a positioning rib or a positioning groove, and the lamp holder 62 is provided with a corresponding positioning groove or positioning rib. Through the cooperation of the positioning rib and the positioning groove, the lamp holder 62 can be effectively prevented from tipping over after being pushed into the axial mounting groove, which facilitates subsequent screw driving.

[0089] In some specific embodiments, there are two intermediate support frames 34, which are arranged opposite to each other. The intermediate support frames 34 are frame-shaped, with the upper end of the frame-shaped intermediate support frame 34 connected and fixed to the top support assembly 32, and the lower end of the frame-shaped intermediate support frame 34 connected and fixed to the bottom support assembly 33. The lamp holder 62 is installed between the two intermediate support frames 34.

[0090] In some embodiments, the filter 31 is disposed in the middle of the housing 10 corresponding to the air inlet 100; the top and bottom of the filter module 30 are respectively formed with an upper purification outlet and a lower purification outlet; the upper fan assembly 21 is installed above the filter support structure and is connected to the upper purification outlet; the lower fan assembly 22 is installed below the filter support structure and is connected to the lower purification outlet; after the outside air enters the housing 10 through the air inlet 100, it is filtered by the filter module 30 and flows to the upper fan assembly 21 and the lower fan assembly 22 from the upper purification outlet and the lower purification outlet, respectively.

[0091] In the above embodiment, the air to be purified enters from the central air inlet 100, is filtered by the cylindrical filter 31, and is naturally split into two directions, upward and downward, flowing from the upper and lower purification outlets to the corresponding fan components 20. The airflow path is short and smooth, reducing wind resistance and turbulence, thereby improving the overall purification efficiency.

[0092] In some embodiments, filter 31 is composed of at least a HEPA filter and an activated carbon filter.

[0093] In the above embodiments, the cylindrical filter 31 is designed to fit the air inlet 100 circumferentially surrounding the outer casing 10, resulting in a larger filtration area and the ability to handle a larger air volume within the same volume. It also provides a structural support for filter rotation and advanced maintenance functions such as filter self-cleaning and UV sterilization. Furthermore, the filter 31 employs a composite design of HEPA and activated carbon filters, which not only efficiently intercepts particulate matter but also adsorbs gaseous pollutants, achieving simultaneous and efficient removal of both major air pollutants. Specifically, the HEPA filter is located on the inner circumference of the activated carbon filter, and the filter 31 is detachably installed in the housing 10. By integrating the HEPA high-efficiency particulate air filter and the composite activated carbon filter into one unit, an independently replaceable cylindrical unit is formed and detachably installed in the housing 10, effectively solving the resource waste problem of traditional integrated filters that need to be replaced as a whole due to partial failure.

[0094] In some embodiments, the air purifier further includes a display module 70, mounted on the top of the housing 10. The top of the housing 10 is open to form an upper air outlet 101. An air outlet grille 12 is installed inside the upper air outlet 101. The air outlet grille 12 is annular, and a clearance opening is formed in the middle of the air outlet grille 12 to allow the display module 70 to be exposed. By setting the air outlet grille to be annular, and the opening in the middle of the annular air outlet grille serving as a clearance opening for the display module to be exposed, the air outlet and display functions do not interfere with each other, while the clearance opening can also meet the heat dissipation requirements of the display module.

[0095] In some embodiments, the air purifier further includes a negative ion generator 214, which is mounted on the second bracket 213. The negative ion generator 214 can adsorb any residual particulate matter in the air passing through the upper air duct 212 by generating negative ions, thereby further purifying the air.

[0096] In some embodiments, the air purifier further includes a dust removal device 40, installed on the filter support structure, for cleaning the filter 31.

[0097] The following is combined Figure 3 , Figure 5 , Figure 7 as well as Figures 13 to 25 The dust removal device 40 in this embodiment will be described. The dust removal device 40 includes a dust suction housing 41, a dust suction pipe 42, a negative pressure structure 43, a drive structure 46, and a sealing element 47. Specifically, a first opening 411 is provided on the side wall of the vacuum cleaner housing 41. A vacuum cleaner pipe 42 is rotatably disposed within the vacuum cleaner housing 41. The vacuum cleaner pipe 42 includes at least two sub-pipe segments arranged sequentially along the axial direction, each sub-pipe segment having a suction port 421. One end of the vacuum cleaner pipe 42 along the axial direction has a dust outlet 422. The suction ports 421 on the at least two sub-pipe segments are arranged at different angles in the circumferential direction. A space is provided between the vacuum cleaner pipe 42 and the vacuum cleaner housing 41. The suction port 421 has a suction position communicating with the first opening 411 and a sealing position offset from the first opening 411. A negative pressure structure 43 is connected to the dust outlet 422. A drive structure 46 is connected to the vacuum cleaner pipe 42 and is used to drive the vacuum cleaner pipe 42 to rotate, thereby driving the suction ports 421 on the at least two sub-pipe segments to sequentially communicate with the first opening 411. The seal 47 is connected inside the vacuum housing 41 and rotates with the vacuum pipe 42 to seal and divide the space into at least two sub-spaces, each sub-space corresponding to a sub-pipe segment.

[0098] The dust removal device's suction pipe employs a design with at least two sub-pipe sections arranged sequentially along the axial direction, allowing at least two suction ports 421 to clean different positions of the filter 31 circumferentially. The drive structure 46 drives the suction pipe 42 to rotate, causing the suction ports 421 on the at least two sub-pipe sections to sequentially connect with the first opening 411. This allows different suction ports 421 to sequentially reach the suction positions connected to the first opening 411, enabling the suction ports 421 to sequentially enter the working state. The other suction ports 421 are in a sealed position offset from the first opening 411. The suction ports in the suction positions are under negative pressure. The negative pressure generated by structure 43 can suck up and clean the dust and contaminants on the surface of filter screen 31. Due to the setting of seal 47, the space between suction pipe 42 and suction housing 41 is sealed and separated to prevent gas from flowing in the space and to prevent gas from flowing between suction ports 421 that are not in the suction position. This ensures that most of the gas can only enter from the suction port 421 in the suction position and flow out from the dust outlet 422, avoiding the influence of the suction port 421 that is in the suction position and not working on the suction port 421 that is in the suction position and working, and ensuring the suction effect of suction pipe 42.

[0099] In a specific implementation, the suction port 421 is an elongated opening extending along the axial direction of the suction pipe 42. The suction port 421 can have a good negative pressure to facilitate the suction of dust and contaminants from the filter screen 31.

[0100] In a further embodiment, the filter 31 can move relative to the dust removal device 40, and during the movement of the filter 31, the dust removal device 40 can suck away dust and contaminants from different positions on the filter 31. In one embodiment, the filter 31 is rotatably disposed on the side of the suction pipe 42, so that the filter 31 can be suctioned by the corresponding suction port 421 in the circumferential direction. In another embodiment, the filter 31 can reciprocate relative to the suction pipe 42 in the horizontal direction.

[0101] In one embodiment, the sealing element 47 is a sleeve with a communication port 471 that communicates with the first opening 411; there are at least two sleeves, and one sleeve is sealed around the outer periphery of each sub-pipe segment.

[0102] The connecting port 471 is connected to the first opening 411, ensuring that when the suction port 421 is rotated to the suction position, it can communicate with the surface of the filter screen 31 through the connecting port 471 and the first opening 411, so as to achieve better removal of dust and pollutants on the surface of the filter screen 31; and the sleeve structure is simple, easy to connect, and can also have a good sealing effect.

[0103] In one embodiment, the sub-pipe section has sealing flanges 423 protruding from both ends in the axial direction, and the sealing flanges 423 are rotatably engaged with the inner wall of the sleeve.

[0104] By setting the sealing flange 423, dust and gas can be prevented from running around randomly between the sub-pipe sections along the axial direction, and the contact area between the sleeve and the sub-pipe section can be reduced, thus reducing friction and ensuring the smooth rotation and stability of the suction pipe 42.

[0105] As an alternative implementation, the inner wall of the sleeve may be provided with annular protrusions at both ends in the circumferential direction, and the annular protrusions may be rotatably engaged with the outer peripheral wall of the suction pipe 42.

[0106] In one embodiment, the outer peripheral wall of the sub-pipe section is further provided with a rib 424, which extends in the axial direction and is connected at both ends to two sealing flanges 423 respectively. The rib 424 is rotatably engaged with the inner wall of the sleeve.

[0107] By setting the ribs 424, the strength of the sub-tube section can be increased, dust and gas can be prevented from flowing in the interval space along the circumferential direction, and the contact area between the sleeve and the sub-tube section can be reduced to reduce friction and ensure the smooth rotation and stability of the suction pipe 42.

[0108] As an alternative implementation, the inner wall of the sleeve may be provided with annular protrusions at both ends in the circumferential direction, and the annular protrusions may be rotatably engaged with the outer peripheral wall of the suction pipe 42; the inner peripheral wall of the sleeve may also be provided with a sealing protrusion, which extends in the axial direction and is connected to the two annular protrusions at both ends respectively, and the sealing protrusion may be rotatably engaged with the outer peripheral wall of the suction pipe 42.

[0109] In one embodiment, there are at least two ribs 424, and the at least two ribs 424 are distributed at circumferential intervals along the sleeve.

[0110] The ribs 424 are at least two in number, and the at least two ribs 424 are distributed at intervals along the circumference of the sleeve, which can provide better limiting and sealing effects in the circumferential direction.

[0111] In a preferred embodiment, the two ribs 424 are respectively disposed on both sides of the suction port 421, and preferably disposed near the suction port 421, which can have a better sealing effect.

[0112] In one embodiment, the sleeve is provided with a first connecting part 472, and the dust collection housing 41 is provided with a corresponding second connecting part, and the first connecting part 472 and the second connecting part are detachably connected.

[0113] The first connecting part 472 and the second connecting part are detachably connected, which facilitates the installation and removal of the sleeve and the suction pipe 42 in the suction housing 41.

[0114] In one embodiment, the vacuum cleaner housing 41 includes a first housing 413 and a second housing 414, which are detachably spliced ​​together. A second connecting part and a first opening 411 are both provided on the first housing 413, and the second connecting part is provided at a position close to the first opening 411. The sleeve is provided with a first connecting part 472 at both ends in the axial direction, and the first connecting part 472 and the second connecting part are detachably inserted.

[0115] The detachable connection between the first housing 413 and the second housing 414 facilitates the installation and removal of the suction pipe 42 and the sleeve within the suction housing 41. The insertion of the first connecting part 472 on the sleeve with the second connecting part further simplifies the installation and removal of the suction pipe 42 and the sleeve.

[0116] In one embodiment, a limiting seal 473 is provided on the outer peripheral wall of the sleeve. The limiting seal 473 has two sets, and the two sets of limiting seals 473 are respectively arranged on both sides of the communication port 471 in the circumferential direction. The limiting seal 473 is in limiting contact with the dust collection housing 41.

[0117] By setting the limiting seal part 473, the gap between the sleeve and the dust collection housing 41 can be sealed to prevent airflow from flowing between the sleeve and the dust collection housing 41, thus avoiding the airflow from affecting the dust collection effect of the dust collection pipe 42; the sleeve can also be limited to facilitate the disassembly of the sleeve mounting box; and the setting of the limiting seal part 473 can also enhance the strength of the sleeve.

[0118] Alternatively, the limiting seal 473 may be provided on the dust collection housing 41.

[0119] In one embodiment, the limiting seal portion 473 protrudes from the outer peripheral wall of the sleeve, and the limiting seal portion 473 includes a first sealing strip 4731 and a second sealing strip 4732.

[0120] The first sealing strip 4731 extends along the axial direction of the sleeve, and the length of the first sealing strip 4731 in the axial direction is greater than the length of the connecting port 471 in the axial direction. One end of the second sealing strip 4732 is connected to the end of the first sealing strip 4731, and the other end extends away from the first sealing strip 4731 along the circumferential direction of the sleeve.

[0121] The first sealing strip 4731 can limit and seal in the axial direction, and the second sealing strip 4732 can limit and seal in the circumferential direction to achieve a better limiting and sealing effect, and the structure is relatively simple.

[0122] In one embodiment, the dust removal device 40 further includes a first pressure plate 44 and a cleaning brush 45.

[0123] The first pressure plate 44 is connected to the first opening 411, and the first pressure plate 44 is provided with a second opening 441.

[0124] The cleaning brush 45 is movably connected inside the vacuum cleaner housing 41. The cleaning brush 45 includes a cleaning bracket 451 and a first brush body 452. The first brush body 452 is connected to the cleaning bracket 451. The first brush body 452 has an extended position that extends out of the vacuum cleaner housing 41 through a second opening 441 and a stored position that is stored inside the vacuum cleaner housing 41. When the vacuum port 421 is in the vacuuming position and the first brush body 452 is in the extended position, the first brush body 452 contacts the filter screen 31, and the first pressure plate 44 limits the cleaning bracket 451.

[0125] The drive structure 46 drives the cleaning brush 45 to move. When the first brush body 452 moves to the extended position, the suction port 421 is in the suction position. The first brush body 452 is correspondingly set and connected with the first opening 411, the second opening 441 and the suction port 421. At this time, the first brush body 452 contacts the filter screen 31. When the filter screen 31 and the first brush body 452 move relative to each other, the first brush body 452 cleans the filter screen 31 during the relative movement. The suction pipe 42 and the suction port 421 generate negative pressure under the negative pressure of the negative pressure structure 43, which can suck away the dust and contaminants cleaned by the first brush body 452, so as to remove stubborn dust and deep-seated dirt from the filter screen 31. The cleaning brush 45 is removed by removing the dust. Due to the setting of the first pressure plate 44, the air flow between the first opening 411 and the suction port 421 in the suction position can be guaranteed by the second opening 441. The cleaning brush 45 can also be limited so that when the cleaning brush 45 moves to the extension position under the drive of the drive structure 46, the first brush body 452 can extend normally from the first opening 411 and the second opening 441 to the outside of the suction housing 41. The first pressure plate 44 and the second opening 441 can also provide a ring-shaped limit for the cleaning bracket 451, ensuring the installation stability of the cleaning brush 45 and preventing the cleaning brush 45 from falling out of the suction housing 41 of the dust removal module.

[0126] In a specific embodiment, the negative pressure structure 43 includes a dust collection box 431 and an air pump 432. The dust inlet of the dust collection box 431 is connected to the dust outlet 422 of the suction pipe 42, and the air pump 432 is connected to the gas outlet of the dust collection box 431. Both the air pump 432 and the dust collection box 431 can be located at the bottom of the filter 31. In a preferred embodiment, the dust collection box 431 is located directly below the suction pipe 42.

[0127] In a further embodiment, the negative pressure structure 43 also includes a first connecting pipe 433, one end of which is connected to the dust inlet of the dust collection box 431, and the other end is connected to the dust outlet 422 of the suction pipe 42. The negative pressure structure 43 also includes a second connecting pipe 434, one end of which is connected to the gas outlet of the dust collection box 431, and the other end is connected to the air pump 432.

[0128] In a specific embodiment, the vacuum cleaner housing 41 includes a first housing 413 and a second housing 414, which are detachably connected, and a first opening 411 is provided on the first housing 413.

[0129] In one embodiment, the first pressure plate 44 is detachably connected to the first opening 411.

[0130] The first pressure plate 44 is detachably connected to the first opening 411, which facilitates the removal and installation of the cleaning brush 45.

[0131] As an alternative implementation, the first pressure plate 44 may be fixedly connected to the first opening 411, and the cleaning brush 45 may be installed on the side of the vacuum cleaner housing 41 facing away from the first opening 411.

[0132] In one embodiment, the dust removal device 40 further includes a first snap-fit ​​portion 442 and a second snap-fit ​​portion 412.

[0133] The first snap-fit ​​part 442 is disposed on the first pressure plate 44.

[0134] The second snap-fit ​​part 412 is disposed on the vacuum cleaner housing 41 and located at the first opening 411, and the first snap-fit ​​part is snapped into the second snap-fit ​​part 412.

[0135] The engagement of the first snap-fit ​​part 442 and the second snap-fit ​​part 412 not only enables the installation and disassembly of the first pressure plate 44 and the first housing 413, but also simplifies the installation and disassembly steps, and facilitates the installation and disassembly of the cleaning brush 45.

[0136] In a specific embodiment, at least three first engaging portions 442 are spaced apart along the axial direction. The first engaging portions 442 at both ends can be slots or holes, and the first engaging portion 442 in the middle position can be a resilient buckle. The number and position of the second engaging portions 412 correspond to the first engaging portions 442. The second engaging portions 412 at both ends can be resilient buckles, and the second engaging portion 412 in the middle position can be slots or holes. Alternatively, at least three first engaging portions 442 are resilient buckles, and at least three second engaging portions 412 are corresponding to slots or holes. Alternatively, at least three first engaging portions 442 are slots or holes, and at least three second engaging portions 412 are corresponding to resilient buckles.

[0137] In one embodiment, the cleaning bracket 451 includes a bracket frame, on which a third opening 453 is provided, the third opening 453 connecting the second opening 441 and the suction port 421 in the suction position; a limiting rib 454 protrudes from the outer side wall of the bracket frame; when the cleaning brush 45 is in the extended position, the first pressure plate 44 abuts against the limiting rib 454.

[0138] By setting the limiting rib 454, the limiting force of the first pressure plate 44 can be directly applied to the cleaning bracket 451 when the cleaning brush 45 is in the extended position, ensuring a stable limiting and fixing effect. The setting of the limiting rib 454 can also increase the strength of the cleaning bracket 451 and avoid excessive contact between the cleaning bracket 451 and the first pressure plate 44, reducing friction and motion interference.

[0139] In a specific implementation, there may be at least two cleaning brushes 45, and each cleaning brush 45 may have at least two limiting ribs 454 on its sidewall extending in the axial direction.

[0140] In this embodiment, the axial direction is the axial direction of the suction pipe 42, and also the length direction of the suction housing 41, the cleaning brush 45, and the first pressure plate 44.

[0141] In one embodiment, the drive structure 46 includes an elastic element 461 connected between the first pressure plate 44 and the cleaning bracket 451.

[0142] The elastic element 461 is connected between the first pressure plate 44 and the cleaning bracket 451. The first pressure plate 44 can provide a more stable positioning connection for the elastic element 461. Compared to related technologies where a small connecting piece is used to fix the elastic element 461 separately, in this embodiment, since the first pressure plate 44 is an integral structure with a second opening 441, it can both achieve annular limiting of the cleaning brush 45 and provide a more stable positioning connection for the elastic element 461. The elastic element 461 is used to apply an elastic force to the cleaning brush 45 to drive the cleaning brush 45 from the extended position to the retracted position.

[0143] In one embodiment, the elastic element 461 is a spring, a first limiting post protrudes from the side of the first pressure plate 44 facing the cleaning bracket 451, and a second limiting post 455 is correspondingly provided on the cleaning bracket 451. The two ends of the spring are respectively sleeved on the outer periphery of the first limiting post and the second limiting post 455.

[0144] The spring has a simple structure, making it easy to install on the first and second limiting posts 455 and easy to disassemble. It also has good elastic force to ensure the drive of the cleaning brush 45 when it moves from the extended position to the retracted position.

[0145] In a specific embodiment, the first pressure plate 44 is provided with a limiting plate protruding into the second opening 441, and the first limiting post protrudes from the limiting plate.

[0146] As an alternative implementation, the first pressure plate 44 may be provided with a first limiting groove, the cleaning bracket 451 may be provided with a second limiting groove, and the two ends of the elastic member 461 may be inserted into the first limiting groove and the second limiting groove respectively.

[0147] In one embodiment, the suction pipe 42 is provided with at least two suction ports 421 in sequence along the axial direction, the suction housing 41 is provided with at least two first openings 411, the first pressure plate 44 is provided with at least two second openings 441, and the cleaning brush 45 is provided with at least two. The number of suction ports 421, first openings 411, second openings 441 and cleaning brushes 45 are arranged in a one-to-one correspondence. Each second opening 441 is provided with a first limiting post at both ends in the axial direction, and each cleaning bracket 451 is provided with a second limiting post 455 at both ends in the axial direction. The axial direction is set at an angle to the moving direction of the cleaning brush 45.

[0148] The first pressure plate 44 is provided with at least two second openings 441, which can respectively limit the at least two cleaning brushes 45 in annular shape, ensuring that each cleaning brush 45 has a stable limiting effect and preventing any cleaning brush 45 from falling off the vacuum cleaner housing 41.

[0149] In a specific embodiment, the suction pipe 42 is rotatably disposed within the suction housing 41. The suction pipe 42 includes at least two sub-pipe segments arranged sequentially along the axial direction. Each sub-pipe segment is provided with a suction port 421, and one end of the suction pipe 42 along the axial direction is provided with a dust outlet 422. The suction ports 421 on the at least two sub-pipe segments are arranged at different angles in the circumferential direction. The driving structure 46 is used to drive the suction pipe 42 to rotate so that the suction ports 421 on the at least two sub-pipe segments are sequentially connected to the first opening 411. The suction port 421 has a suction position connected to the first opening 411 and a sealing position that is offset from the first opening 411. There are at least two cleaning brushes 45, and each sub-pipe segment is correspondingly provided with one cleaning brush 45. When the suction port 421 of a sub-pipe segment is in the suction position connected to the first opening 411, the cleaning brush 45 corresponding to that sub-pipe segment is in the extended position, and the other cleaning brushes 45 are in the retracted position.

[0150] In a preferred embodiment, the axial direction is perpendicular to the moving direction of the cleaning brush 45.

[0151] In one embodiment, the drive structure 46 further includes a drive motor 462 and a transmission part 463.

[0152] The drive motor 462 is connected to one end of the vacuum cleaner housing 41 along the moving direction of the cleaning brush 45; the power output end of the drive motor 462 is connected to the vacuum cleaner pipe 42.

[0153] The transmission part 463 is mounted on the suction pipe 42 and is in transmission cooperation with the cleaning brush 45.

[0154] The drive motor 462 can directly control the rotation of the suction pipe 42 through the power output end to drive the suction port 421 on the suction pipe 42 to move to the suction position; or it can transmit the driving force of the drive motor 462 to the cleaning brush 45 through the transmission part 463 to drive the cleaning brush 45 to move from the storage position to the extension position; thus, when the suction port 421 of the suction pipe 42 is in the suction position, the transmission drives the cleaning brush 45 to the extension position, so as to clean the filter screen 31 through the cleaning brush 45. The negative pressure of the suction pipe 42 and the suction port 421 sucks away the dust and pollutants that have been cleaned, so as to remove the stubborn dust and deep-seated attachments on the filter screen 31.

[0155] In a specific implementation, the transmission part 463 is a cam structure.

[0156] In a specific embodiment, the dust removal device 40 further includes a first fixing plate 48 and a second fixing plate 49. The first fixing plate 48 and the second fixing plate 49 are respectively connected to the two ends of the dust collection housing 41 along the axial direction. The drive motor 462 is connected to the first fixing plate 48. The second fixing plate 49 is provided with a connecting connector 491 that communicates with the dust outlet 422. The connecting connector 491 communicates with the negative pressure structure 43. The first fixing plate 48 is installed and fixed on the top support assembly 32 of the filter support structure, and the second fixing plate 49 is installed and fixed on the bottom support assembly 33 of the filter support structure.

[0157] As an alternative implementation, the drive structure 46 may also include a first motor and a second motor, wherein the first motor is used to drive the suction pipe 42 to rotate and the second motor is used to drive the cleaning brush 45 to move.

[0158] In one embodiment, the filter module includes a filter screen 31 and a second brush body 310. The filter screen 31 is rotatably disposed on the side of the dust removal device 40, and the second brush body 310 is connected to the surface of the filter screen 31. The second brush body 310 is used to clean the first brush body 452.

[0159] The filter 31 rotates, causing the second brush body 310 to rotate. When the second brush body 310 rotates to contact the first brush body 452, the first brush body 452 crosses the second brush body 310, and the second brush body 310 can clean the first brush body 452, thus achieving self-cleaning of the first brush body 452.

[0160] In a specific implementation, both the first brush body 452 and the second brush body 310 are brush bristles.

[0161] Alternatively, in other embodiments, the first brush body 452 is bristles and the second brush body 310 is teeth.

[0162] In a specific implementation, the sub-segments of the suction pipe 42 are named sequentially from top to bottom as the first segment, the second segment, ..., the Nth segment. The control method for the dust removal device 40 includes: firstly, driving the suction pipe 42 to rotate via the drive structure 46, driving the suction port 421 of the first segment to move to the suction position, with the suction ports 421 of the second segment...the Nth segment all in a sealed position, and driving the cleaning brush 45 corresponding to the first segment to move to the extended position, with the cleaning brush 45 corresponding to the second segment...the Nth segment all in a retracted position. At this time, the filter screen 31 is rotated at least one revolution to clean the filter screen 31 corresponding to the first segment; then, the suction port 421 of the second segment is moved to the suction position, with the suction ports 421 of the first segment...the Nth segment all in a sealed position, and the cleaning brush 45 corresponding to the second segment...the Nth segment is driven to rotate...the Nth segment ... Brush 45 is moved to the extended position, and the cleaning brushes 45 corresponding to the first tube segment...the Nth tube segment are all in the retracted position. At this time, the filter screen 31 is rotated at least one revolution to clean the filter screen 31 corresponding to the second tube segment. This process is repeated until the suction port 421 of the Nth tube segment is moved to the suction position, and the suction ports 421 of the first tube segment, the second tube segment...are all in the sealed position. The cleaning brush 45 corresponding to the Nth tube segment is then driven to the extended position, and the cleaning brushes 45 corresponding to the first tube segment, the second tube segment...are all in the retracted position. At this time, the filter screen 31 is rotated at least one revolution to clean the filter screen 31 corresponding to the Nth tube segment. At this point, the cleaning of the filter screen 31 is complete.

[0163] Furthermore, the filter self-cleaning function is achieved by the dust removal device 40, which also includes a vacuum base 400. The vacuum base 400 is integrated with the bottom support assembly 33. The vacuum base 400 integrates a vacuum motor, a ventilation pipe, and a dust collection box. The vacuum pipe 42 is equipped with a segmented, retractable brush head. The vacuum base 400 is fixed to the bottom support assembly 33 by clips and screws. The first fixing plate 48 and the second fixing plate 49 are respectively connected to the top support assembly 32 and the bottom support assembly 33 by screws. When the air purifier enters the self-cleaning mode, under the negative pressure environment provided by the vacuum motor, the vacuum housing 41 and its segmented, retractable brush head can vacuum the outer surface of the rotating filter 31 layer by layer. The dust is collected in the dust collection box for convenient centralized disposal by the user. In sterilization mode, the ultraviolet sterilization module 60, which is connected between the top support component 32 and the bottom support component 33 by screws, can irradiate the rotating filter 360°, effectively inhibiting bacterial growth, reducing the risk of microbial contamination, improving purification efficiency and reducing secondary pollution.

[0164] The air purifier proposed in this application mainly consists of a shell 10, an air inlet grille 11, a filter module 30, an ultraviolet sterilization module 60, a dust removal device 40, an upper fan assembly 21, and a lower fan assembly 22. This purifier employs a dual centrifugal fan system, with the two fans respectively placed in the upper air duct 212 and the lower air duct. An annular air inlet 100 is provided on the air inlet grille 11 of the shell 10, forming a purification method of air intake in the middle and air exhaust from the top and bottom. After purification, part of the air is blown upwards by the upper fan assembly 21, and the other part is blown downwards by the lower fan assembly 22 and discharged from all sides, ultimately forming the following configuration: Figure 4 The diagram shows a "surrounding" airflow path. Compared to traditional top and bottom air intake and center air exhaust, this solution avoids the problem of dust or foreign objects being easily drawn in when air is drawn in from the ground, leading to filter clogging, performance degradation, and shortened lifespan. Furthermore, common center air exhaust designs tend to create a noticeable direct airflow sensation, which can easily disturb users in quiet environments such as sleeping or working. The surrounding airflow created by this solution, with center air intake and top and bottom air exhaust, effectively eliminates the discomfort of direct airflow, allowing users to enjoy uniformly flowing clean air without feeling any discomfort while achieving purification, thus enhancing the user experience.

[0165] Furthermore, a filter module 30 integrating a HEPA high-efficiency particulate air filter and a composite activated carbon filter is installed at the air inlet 100. The composite activated carbon filter is placed inside the HEPA filter, together forming a cylindrical, independently replaceable filter unit. This design allows users to easily replace the failed filter section individually, avoiding the need for complete replacement of traditional integrated composite filters due to partial failure, thereby reducing maintenance costs and resource waste. At the same time, the central air intake and top-bottom air outlet layout only requires a single filter in the middle of the unit, making filter replacement and cleaning more convenient. In contrast, if a top-bottom air intake and central air outlet design were used, two sets of pre-filters would need to be installed at the top and bottom air inlets, increasing maintenance complexity and costs.

[0166] Furthermore, the central air intake and top-to-bottom air outlet structure helps to expand the functions of the air purifier. To avoid filter clogging and bacterial accumulation due to centralized purification at the air inlet 100, which would affect its service life, this embodiment preferably employs filter self-cleaning technology and an ultraviolet sterilization module 60 to centrally maintain the central filter, achieving both self-cleaning and sterilization functions. In contrast, the top-to-bottom air intake and central air outlet structure, with its dispersed filter element arrangement at the air inlet 100, makes it difficult to achieve the aforementioned centralized maintenance function.

[0167] This embodiment utilizes a top support assembly 32 above the filter screen 31 and a bottom support assembly 33 below it to facilitate centralized maintenance of the air inlet filter screen 100. The two support assemblies are connected by two intermediate support frames 34, which bear the main weight of the entire unit. The top support assembly 32 is driven by a stepper motor to rotate the filter screen 31, which is pre-tightened to it. The bottom support assembly 33 serves as a base, providing a platform for the filter screen 31 to rotate freely and support manual lifting. Users can control the filter screen 31 to rise by moving a lever, fixing it to the top support assembly 32 for rotation; moving the lever in the opposite direction lowers the filter screen 31 for easy removal.

[0168] Furthermore, this embodiment also includes a four-in-one sensor on the upper fan assembly 21 and a formaldehyde sensor 14 on the housing 10. The formaldehyde sensor 14 and the four-in-one sensor work together to monitor air quality in real time, enabling the purifier to dynamically adjust the purification mode according to different environments, thereby improving purification efficiency. Preferably, a cover plate 13 is provided on the back of the housing 10, and the formaldehyde sensor 14 is integrated on the cover plate 13. The top of the cover plate 13 is limited by the ribs on the side of the upper air duct 212, and the bottom of the cover plate 13 is fixed to the bottom of the filter top support assembly 32 by buckles and screws.

[0169] Furthermore, the air purifier also includes a support base 80, which supports the entire unit. The lower fan assembly 22 is connected to the vacuum base 400 below by screws and clips, and fixed above the support base 80. The support base 80 is equipped with casters at the bottom, facilitating the movement of the purifier to different positions. The first bracket 222 is fixed to the base with screws, and a bottom light assembly 90 is installed at its bottom via clips. The bottom light assembly 90 includes a light strip bracket 91 and a bottom ambient light strip 92. The bottom ambient light strip is embedded in the groove of the light strip bracket 91 and adopts an adjustable warm light design to avoid glare at night and optimize the user experience. The first fan 221 is installed inside the first bracket 222, and three flow openings 2220 are opened around its perimeter. Each flow opening 2220 has a specific slot for installing the deodorization module 50. The deodorization module 50 consists of three plasma generators 51, three metal mesh covers 52, and three ozone reduction meshes 53. It can efficiently decompose and neutralize TVOCs, odors, and other organic pollutants in the air passing through the lower air outlet 102. The plasma generators 51 produce high-density plasma, which catalyzes the degradation of harmful gases. The metal mesh covers 52 are located between the ozone reduction meshes 53 and the plasma generators 51, and are grounded to prevent plasma leakage. The outermost ozone reduction meshes 53 prevent excessive ozone from escaping due to glow discharge.

[0170] Furthermore, the upper fan assembly 21 is fixed above the top support assembly 32 with screws. The upper fan assembly 21 includes an upper air duct 212, a second bracket 213, and a second fan 211. The second fan 211 is installed below the second bracket 213, and a display module 70 is installed above it. The display module 70 includes an indicator light, a lampshade, a lamp holder, an air quality light, and a lamp frame. The air quality light is embedded in the groove of the lamp frame and uses a ring-shaped LED matrix to dynamically display key indicators such as PM2.5 and formaldehyde in real time, allowing users to intuitively understand air quality and purification effects without the need for a screen or APP. A crystal lamp ball is mounted on the lamp holder, and a color display screen is integrated on its top for easy user operation of the entire unit. The crystal material forms a soft halo under the light, enhancing the product's visual style. In another embodiment, a lifting crystal lamp ball design can be adopted, which automatically rises when the unit is turned on and automatically lowers when it is turned off, enhancing aesthetics while giving users a sense of ritual in intelligent interaction.

[0171] Furthermore, to ensure the deodorization effect, the airflow through the deodorization module 50 needs to reach an appropriate air volume. When the purifier is in deodorization mode, the air volume of the lower air outlet 102 can be kept at an ideal value by controlling the first fan 221. At this time, the second fan 211 can still adjust the air volume of the upper air outlet 101 to continue purifying the air, thereby maximizing the purification performance and working efficiency of the whole machine in deodorization mode. When switching to normal purification mode, the deodorization module 50 can be turned off, and the speed of the two fans 202 can be adjusted separately to achieve rapid purification.

[0172] The air purifier provided in this application expands its adaptability to multiple scenarios by integrating odor removal functionality. Based on the airflow path, it innovatively integrates a plasma generator 51, a metal mesh cover 52, and an ozone reduction mesh 53 to form an odor removal module 50. This module dynamically switches to odor removal mode according to environmental needs and works in conjunction with the first fan, automatically adjusting the airflow to optimal levels for efficient decomposition of TVOCs and odors. Simultaneously, the second fan maintains basic purification efficiency, achieving efficient and safe odor removal and significantly improving the device's applicability and user experience in odor-prone environments. While ensuring the air purifier's performance, this application expands its functionality and purification modes, enhancing its reliability and adaptability in various application scenarios to meet diverse user needs and improve the user experience.

[0173] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the protection scope of the embodiments of this application.

Claims

1. An air purifier, characterized in that, The air purifier has an air inlet (100) in the middle, and an upper air outlet (101) and a lower air outlet (102) at the top and bottom, respectively. When the air purifier is in operation, outside air enters the air purifier through the middle air inlet (100), is filtered and purified, and is blown out from the upper air outlet (101) and the lower air outlet (102) respectively.

2. The air purifier according to claim 1, characterized in that, The air purifier includes: The outer casing (10) is provided with the air inlet (100), the upper air outlet (101) and the lower air outlet (102). A fan assembly (20) is disposed inside the housing (10). The fan assembly (20) is used to drive external air into the housing (10) from the air inlet (100) and then flow to the upper air outlet (101) and the lower air outlet (102) respectively.

3. The air purifier according to claim 2, characterized in that, The wind turbine assembly (20) includes: The upper fan assembly (21) is located at the top inside the housing (10) and is used to drive external air to flow from the air inlet (100) to the upper air outlet (101); The lower fan assembly (22) is located at the top of the housing (10) and is used to drive external air to flow from the air inlet (100) to the lower air outlet (102).

4. The air purifier according to claim 3, characterized in that, The air purifier also includes: A filter module (30) is disposed at the air inlet (100), the filter module (30) includes a filter screen (31), and the filter module (30) is located between the upper fan assembly (21) and the lower fan assembly (22); The filter module (30) has an upper purification outlet and a lower purification outlet at its top and bottom, respectively. The upper fan assembly (21) is disposed between the upper purification outlet and the upper air outlet (101), and the lower fan assembly (22) is disposed between the lower purification outlet and the lower air outlet (102). After entering the housing (10) through the air inlet (100), the outside air is filtered by the filter module (30) and flows from the upper purification outlet to the upper fan assembly (21) and the lower fan assembly (22) respectively.

5. The air purifier according to claim 4, characterized in that, The filtering module (30) further includes: A filter support structure having an installation space for installing a filter (31) therein, wherein the filter (31) is rotatably installed in the installation space; The upper fan assembly (21) is detachably mounted above the filter support structure, and the lower fan assembly (22) is detachably mounted below the filter support structure.

6. The air purifier according to claim 5, characterized in that, The air purifier also includes a dust removal device (40), which is installed on the filter support structure and is used to clean the filter (31). The dust removal device (40) includes: The vacuum housing (41) has a first opening (411) on its side wall. A suction pipe (42) is rotatably disposed within the suction housing (41). The suction pipe (42) includes at least two sub-pipe segments arranged sequentially along the axial direction. Each sub-pipe segment is provided with a suction port (421). One end of the suction pipe (42) along the axial direction is provided with a dust outlet (422). The suction ports (421) on the at least two sub-pipe segments are arranged at different angles in the circumferential direction. There is a gap between the suction pipe (42) and the suction housing (41). The suction port (421) has a suction position communicating with the first opening (411) and a sealing position that is offset from the first opening (411). The negative pressure structure (43) is connected to the dust outlet (422); A drive structure (46) is connected to the suction pipe (42) and is used to drive the suction pipe (42) to rotate so as to drive the suction ports (421) on at least two of the sub-pipe segments to communicate sequentially with the first opening (411); A sealing element (47) is connected inside the vacuum housing (41) and rotates with the vacuum tube (42) to seal and divide the space into at least two sub-spaces, each of which corresponds to a sub-tube segment.

7. The air purifier according to claim 5, characterized in that, The air purifier also includes an ultraviolet sterilization module (60), which is installed on the filter support structure and located on one side of the filter (31) for ultraviolet sterilization of the filter (31); The ultraviolet sterilization module (60) includes: Lamp holder (62); The ultraviolet lamp (61) has multiple lamps, which are arranged at intervals along the length of the lamp holder (62), and the irradiation range of the multiple ultraviolet lamps (61) covers the filter (31) in the height direction. A baffle assembly is disposed on both sides of a plurality of ultraviolet lamps (61).

8. The air purifier according to claim 2, characterized in that, The wind turbine assembly (20) includes: The fan housing (201) has a first outlet and a second outlet at its upper and lower ends, respectively, and an airflow inlet at the middle of the fan housing (201) corresponding to the air inlet (100). The fan (202) includes a motor and a fan blade. The motor drives the fan blade to rotate so that external air enters the fan housing (201) from the air inlet (100) through the airflow inlet and flows to the first outlet and the second outlet respectively, and is then blown out through the upper outlet (101) and the lower outlet (102).

9. The air purifier according to claim 8, characterized in that, The air purifier also includes: The filtration module (30) includes a first filter (35) disposed at the first outlet and a second filter (36) disposed at the second outlet.

10. The air purifier according to any one of claims 2 to 9, characterized in that, The air purifier also includes: The display module (70) is mounted on the top of the housing (10), the top of the housing (10) being open to form the upper air outlet (101). An air vent (101) is provided with an air vent grille (12), which is annular and has an opening in the middle for the display module (70) to be exposed.

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