Dust removal device and air treatment equipment

Abstract

The invention relates to the technical field of air treatment, and discloses a dust removal device and air treatment equipment. A first opening is formed in the side wall of a dust collection shell; the dust collection pipe is arranged in the dust collection shell, a dust collection opening and a dust outlet are formed in the dust collection pipe, and the dust collection opening is provided with a dust collection position corresponding to the first opening; the negative pressure structure comprises an air pump, and the air pump is communicated with the dust outlet; the pressing plate is connected to the first opening, and a second opening is formed in the pressing plate; the cleaning brush is movably connected in the dust collection shell and comprises a first brush body, and the first brush body is provided with an extending position extending out of the dust collection shell through the second opening and a containing position contained in the dust collection shell; when the dust collection opening is located at the dust collection position and the first brush body is located at the extending position, the first brush body makes contact with the filter screen, and the pressing plate limits the cleaning brush; the driving structure is connected with the cleaning brush. According to the dust removal device, the mounting stability of the cleaning brush is guaranteed through the pressing plate, and the cleaning brush is prevented from being disengaged from the dust collection shell.

Description

Technical Field

[0001] This invention relates to the field of air treatment technology, specifically to dust removal devices and air treatment equipment. Background Technology

[0002] With increasing concern about indoor air quality, air purifiers have become widely used electrical appliances in homes and offices. Air purifiers typically have a filtration module, which includes a multi-layered filter structure, such as a pre-filter, HEPA filter, and activated carbon filter, to filter particulate matter, bacteria, viruses, and harmful gases from the air.

[0003] However, over long-term use, filters gradually accumulate dust and contaminants, leading to increased air resistance, decreased purification efficiency, and even bacterial growth. Some air handling equipment is equipped with automatic filter cleaning functions, such as negative pressure cleaning or vibration dust removal, but the cleaning effect is limited, and it is difficult to completely remove stubborn dust and deep-seated deposits from the filter surface.

[0004] In related technologies, to enhance the cleaning effect on stubborn dust and deep-seated deposits, a movable cleaning brush is added to the dust removal module. The combination of mechanical brushing and negative pressure suction when the cleaning brush moves to the cleaning position removes stubborn dust and deep-seated deposits from the filter. When the cleaning brush returns to its original position, it is typically moved by a pressure plate and spring, with the brush confined within the dust removal module by the spring force. However, because the size and shape of the pressure plate are usually matched to the spring, the limiting effect of the pressure plate and spring on the cleaning brush is limited and only occurs in localized areas. This makes the cleaning brush prone to detaching from the dust removal module, resulting in poor installation stability. Summary of the Invention

[0005] This invention provides a dust removal device and an air handling unit to solve the problem that the cleaning brush has poor installation stability and is prone to detaching from the dust removal module.

[0006] In a first aspect, the present invention provides a dust removal device for cleaning a filter screen, the dust removal device comprising: The vacuum cleaner housing has a first opening on its side wall; A vacuum tube is disposed inside the vacuum housing. The vacuum tube is provided with a suction port and a dust outlet. The suction port has a suction position corresponding to the first opening. The negative pressure structure includes an air pump, which is connected to the dust outlet. A pressure plate is connected to the first opening, and the pressure plate is provided with a second opening; A cleaning brush is movably connected inside the vacuum cleaner housing. The cleaning brush includes a first brush body, which has an extended position that extends out of the vacuum cleaner housing through a second opening and a retracted position that is stored inside the vacuum cleaner housing. When the vacuum port is in the vacuum position and the first brush body is in the extended position, the first brush body contacts the filter screen, and the pressure plate limits the cleaning brush. A drive structure, connected to the cleaning brush, is used to drive the cleaning brush to reciprocate between the extended position and the retracted position.

[0007] Beneficial effects: The drive structure drives the cleaning brush to move. When the first brush body moves to the extended position, the suction port is in the suction position. The first brush body is correspondingly set and connected with the first opening, the second opening and the suction port. At this time, the first brush body is in contact with the filter screen. When the filter screen and the first brush body move relative to each other, the first brush body cleans the filter screen during the relative movement. The suction pipe and the suction port generate negative pressure under the negative pressure of the negative pressure structure, which can suck away the dust and contaminants cleaned by the first brush body, so as to remove the stubborn dust and deep-seated attachments on the filter screen. Due to the setting of the pressure plate, the air flow between the first opening and the suction port in the suction position can be guaranteed through the second opening, and the cleaning brush can be limited. When the cleaning brush moves to the extended position under the drive structure, the first brush body can normally extend from the first opening and the second opening to the outside of the suction housing. The pressure plate and the second opening can also provide a ring-shaped limit for the cleaning brush, ensuring the installation stability of the cleaning brush and preventing the cleaning brush from falling out of the suction housing of the dust removal module.

[0008] In one alternative implementation, the pressure plate is detachably connected to the first opening.

[0009] Beneficial effect: The pressure plate is detachably connected to the first opening, which facilitates the removal and installation of the cleaning brush.

[0010] In one optional embodiment, the dust removal device further includes: The first snap-fit ​​portion is provided on the pressure plate; The second snap-fit ​​part is disposed on the vacuum cleaner housing and located at the first opening, and the first snap-fit ​​part snaps into the second snap-fit ​​part.

[0011] Beneficial effects: By engaging the first and second snap-fit ​​parts, the pressure plate and the first housing can be installed and disassembled, and the installation and disassembly steps are simplified, making it easier to install and disassemble the cleaning brush.

[0012] In one optional embodiment, the cleaning brush further includes a cleaning bracket, with the first brush body connected to the cleaning bracket; when the suction port is in the suction position and the first brush body is in the extended position, the pressure plate limits the cleaning bracket.

[0013] In one optional embodiment, the cleaning bracket includes a bracket frame with a third opening that connects the second opening and the suction port at the suction position; a limiting rib protrudes from the outer side wall of the bracket frame; when the cleaning brush is in the extended position, the pressure plate abuts against the limiting rib.

[0014] Beneficial effects: By setting the limiting ribs, the limiting force of the pressure plate can be directly applied to the cleaning bracket when the cleaning brush is in the extended position, ensuring a stable limiting and fixing effect. The limiting ribs can also increase the strength of the cleaning bracket and prevent excessive contact between the cleaning bracket and the pressure plate, reducing friction and motion interference.

[0015] In one alternative embodiment, the drive structure includes an elastic element connected between the pressure plate and the cleaning bracket.

[0016] Beneficial effects: The elastic element is connected between the pressure plate and the cleaning bracket. The pressure plate provides a more stable positioning connection for the elastic element. Compared to related technologies where a small connecting piece is used to fix the elastic element separately, in this embodiment, because the pressure plate is a single structure with a second opening, it not only achieves annular positioning of the cleaning brush but also provides a more stable positioning connection for the elastic element. The elastic element applies an elastic force to the cleaning brush to drive it from the extended position to the retracted position.

[0017] In one optional embodiment, the elastic element is a spring, a first limiting post protrudes from the side of the pressure plate facing the cleaning bracket, a second limiting post is correspondingly provided on the cleaning bracket, and the two ends of the spring are respectively sleeved on the outer periphery of the first limiting post and the second limiting post.

[0018] Beneficial effects: The spring has a simple structure, which makes it easy to install on the first and second limiting posts and easy to disassemble. It also has good elastic force to ensure the drive of the cleaning brush when it moves from the extended position to the retracted position.

[0019] In one optional embodiment, the suction pipe is provided with at least two suction ports in sequence along the axial direction, the suction housing is provided with at least two first openings, the pressure plate is provided with at least two second openings, and the cleaning brush is provided with at least two. The number of suction ports, first openings, second openings and cleaning brushes are arranged in a one-to-one correspondence. Each second opening is provided with a first limiting post at both ends in the axial direction, and each cleaning bracket is provided with a second limiting post at both ends in the axial direction. The axial direction is set at an angle to the moving direction of the cleaning brush.

[0020] Beneficial effects: The pressure plate has at least two second openings, which can respectively limit the two cleaning brushes in a ring shape, ensuring that each cleaning brush has a stable limiting effect and preventing any cleaning brush from falling off the vacuum cleaner housing.

[0021] In one optional implementation, the driving structure further includes: A drive motor is connected to one end of the vacuum cleaner housing along the moving direction of the cleaning brush; the power output end of the drive motor is connected to the vacuum cleaner tube. The transmission unit is mounted on the suction pipe and engages with the cleaning brush in a transmission manner.

[0022] Beneficial effects: The drive motor can directly control the rotation of the vacuum tube through the power output end to drive the vacuum port on the vacuum tube to the vacuum position; it can also transmit the driving force of the drive motor to the cleaning brush through the transmission part to drive the cleaning brush to move from the storage position to the extension position; thus, when the vacuum port of the vacuum tube is in the vacuum position, the transmission drives the cleaning brush to the extension position to clean the filter screen. The negative pressure of the vacuum tube and the vacuum port sucks away the dust and contaminants that have been swept up, thereby removing stubborn dust and deep-seated deposits from the filter screen.

[0023] In one optional embodiment, the transmission part is a cam structure, and the cleaning brush has a protruding mating part that cooperates with the transmission part.

[0024] Secondly, the present invention also provides an air handling device, including the dust removal device described above.

[0025] In one alternative embodiment, the air handling equipment further includes a filtration device comprising a filter screen and a second brush body, the filter screen being rotatably disposed on the side of the dust removal device, and the second brush body being connected to the surface of the filter screen for cleaning the first brush body.

[0026] Beneficial effects: The rotation of the filter screen drives the rotation of the second brush body. When the second brush body rotates to contact the first brush body, the first brush body crosses the second brush body, and the second brush body can clean the first brush body, realizing the self-cleaning of the first brush body.

[0027] In one alternative implementation, the air handling device is an air purifier. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is an exploded view of the installation of a dust removal device according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of part A in the diagram; Figure 3 for Figure 1 A magnified view of part B in the diagram; Figure 4 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 5 for Figure 4 A magnified view of part of C; Figure 6 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 7 for Figure 6 A magnified view of part of D; Figure 8 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 9 for Figure 8 A magnified view of part of E in the diagram; Figure 10 This is a schematic diagram of the axial direction of a dust removal device according to an embodiment of the present invention; Figure 11 This is a schematic diagram of a sealing element of a dust removal device according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of a dust removal device according to an embodiment of the present invention; Figure 13 This is a partial structural schematic diagram of an air handling device according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures: 40. Dust removal device; 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. 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. Seals; 48. First fixing plate; 49. Second fixing plate; 31. Filter screen; 311. Second brush body. Detailed Implementation

[0031] 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.

[0032] The following is combined with Figures 1 to 13 The following describes embodiments of the present invention.

[0033] According to an embodiment of the present invention, in one aspect, a dust removal device 40 is provided for cleaning a filter screen 31. The dust removal device 40 includes a dust collection housing 41, a dust collection pipe 42, a negative pressure structure 43, a pressure plate 44, a cleaning brush 45, and a drive structure 46. The side wall of the vacuum cleaner housing 41 is provided with a first opening 411.

[0034] The suction pipe 42 is disposed inside the suction housing 41. The suction pipe 42 is provided with a suction port 421 and a dust outlet 422. The suction port 421 has a suction position corresponding to the first opening 411.

[0035] The negative pressure structure 43 includes an air pump 432, which is connected to the dust outlet 422.

[0036] The pressure plate 44 is connected to the first opening 411, and the pressure plate 44 is provided with a second opening 441.

[0037] A cleaning brush 45 is movably connected inside the vacuum cleaner housing 41. The cleaning brush 45 includes a first brush body 452, which has an extended position that extends out of the vacuum cleaner housing 41 through the second opening 441 and a retracted 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 pressure plate 44 limits the cleaning brush 45.

[0038] The drive structure 46 is connected to the cleaning brush 45 and is used to drive the cleaning brush 45 to reciprocate between the extended position and the retracted position.

[0039] 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 the stubborn dust on the filter screen 31. Deep-seated deposits are removed. Due to the setting of the pressure plate 44, the airflow between the first opening 411 and the suction port 421 in the suction position can be ensured through the second opening 441. At the same time, the cleaning brush 45 can 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 normally extend from the first opening 411 and the second opening 441 to the outside of the suction housing 41. The pressure plate 44 and the second opening 441 can also provide annular limitation for the cleaning brush 45, 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In one embodiment, the pressure plate 44 is detachably connected to the first opening 411.

[0044] The pressure plate 44 is detachably connected to the first opening 411, which facilitates the removal and installation of the cleaning brush 45.

[0045] As an alternative implementation, the 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.

[0046] In one embodiment, the dust removal device 40 further includes a first snap-fit ​​portion 442 and a second snap-fit ​​portion 412.

[0047] The first snap-fit ​​portion 442 is disposed on the pressure plate 44.

[0048] The second snap-fit ​​portion 412 is disposed on the vacuum housing 41 and located at the first opening 411, and the first snap-fit ​​portion is snapped into the second snap-fit ​​portion 412.

[0049] By engaging the first snap-fit ​​part 442 and the second snap-fit ​​part 412, the installation and disassembly of the pressure plate 44 and the first housing 413 are realized, and the installation and disassembly steps are simplified, which also facilitates the installation and disassembly of the cleaning brush 45.

[0050] 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.

[0051] In one embodiment, the cleaning brush 45 further includes a cleaning bracket 451, and the first brush body 452 is connected to the cleaning bracket 451; when the suction port 421 is in the suction position and the first brush body 452 is in the extended position, the pressure plate 44 limits the cleaning bracket 451.

[0052] The cleaning bracket 451 can easily fix the first brush body 452 and move the first brush body 452. When the pressure plate 44 limits the cleaning bracket 451, it can also have a larger limiting contact area with the cleaning bracket 451, thereby obtaining a more stable limiting effect.

[0053] In one embodiment, the cleaning bracket 451 includes a bracket frame, the bracket frame having a third opening 453, the third opening 453 connecting the second opening 441 and the suction port 421 at 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 pressure plate 44 abuts against the limiting rib 454.

[0054] By setting the limiting rib 454, the limiting force of the 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 pressure plate 44, reducing friction and motion interference.

[0055] 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.

[0056] 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 pressure plate 44.

[0057] In one embodiment, the drive structure 46 includes an elastic element 461 connected between the pressure plate 44 and the cleaning bracket 451.

[0058] The elastic element 461 is connected between the pressure plate 44 and the cleaning bracket 451. The pressure plate 44 can provide a more stable positioning connection for the elastic element 461. Compared with the related technology where a small connecting piece is used to fix the elastic element 461 separately, in this embodiment, since the pressure plate 44 is an integral structure with a second opening 441, it can not only achieve the annular limiting of the cleaning brush 45, but also 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 storage position.

[0059] In one embodiment, the elastic element 461 is a spring, a first limiting post protrudes from the side of the 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.

[0060] 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.

[0061] In a specific embodiment, the pressure plate 44 is provided with a limiting plate that protrudes into the second opening 441, and the first limiting post protrudes from the limiting plate.

[0062] As an alternative implementation, the 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.

[0063] 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 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.

[0064] The pressure plate 44 is provided with at least two second openings 441, which can respectively limit the at least two cleaning brushes 45 in a ring 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.

[0065] 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 as to drive the suction ports 421 on the at least two sub-pipe segments to communicate sequentially with the first opening 411. 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. 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 communicating with 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.

[0066] In a preferred embodiment, the axial direction is perpendicular to the moving direction of the cleaning brush 45.

[0067] In one embodiment, the drive structure 46 further includes a drive motor 462 and a transmission part 463.

[0068] The drive motor 462 is connected to one end of the vacuum 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 pipe 42.

[0069] The transmission part 463 is disposed on the suction pipe 42 and is in transmission cooperation with the cleaning brush 45.

[0070] 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.

[0071] In one embodiment, the transmission part 463 is a cam structure, and the cleaning brush 45 has a protruding mating part that cooperates with the transmission part 463.

[0072] The protruding mating part facilitates engagement with the cam structure while preventing motion interference with the rotation of the suction pipe 42. Simultaneously, the cam structure, during rotation, engages with the mating part to convert the rotational motion of the suction pipe 42 into linear motion, driving the first brush body 452 of the cleaning brush 45 to reciprocate between the extended and retracted positions, thereby achieving coordinated movement between the cleaning brush 45 and the suction pipe 42.

[0073] 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 that communicates with the dust outlet 422. The connecting connector is connected to the negative pressure structure 43.

[0074] 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.

[0075] In a further 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 having a suction port 421. One end of the suction 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 gap is provided between the suction pipe 42 and the suction housing 41. The suction port 421 has a connection with the first opening 411. The dust removal device 40 includes a connected suction position and a sealing position that is offset from the first opening 411; a drive structure 46 connected to the suction pipe 42 for driving the suction pipe 42 to rotate so that the suction ports 421 on at least two of the sub-pipe segments are sequentially connected to the first opening 411; the dust removal device 40 also includes a sealing element 47 connected inside the suction housing 41 and rotatably engaged with the suction pipe 42 for sealingly dividing the space into at least two sub-spaces, each of the sub-spaces corresponding to one of the sub-pipe segments.

[0076] By setting the seal 47, it can be ensured that when the dust suction port 421 on a sub-pipe section reaches the dust suction position, the interval space of the other sub-pipe sections where the dust suction ports 421 are in the sealed position are all formed into a sealed space. Dust can only enter through the dust suction port 421 in the dust suction position and then be discharged through the dust outlet 422. It will not enter the interval space, thus avoiding the phenomenon of dust and gas running around between the sub-pipe sections and ensuring the dust suction effect of the dust removal device 40.

[0077] In a further embodiment, the sealing element 47 is a sleeve, the sleeve is provided with a communication port, the communication port is connected to the first opening 411; there are at least two sleeves, and one sleeve is sealed around the outer periphery of each sub-pipe segment.

[0078] The sleeve has a simple structure, is easy to connect, and can also provide a good sealing effect.

[0079] In a further embodiment, the sub-tube segment 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.

[0080] 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.

[0081] In a further embodiment, the outer peripheral wall of the sub-pipe section is further provided with a rib 424, the rib 424 extends along the axial direction, and the two ends of the rib 424 are respectively connected to the two sealing flanges 423, and the rib 424 is rotatably engaged with the inner wall of the sleeve.

[0082] 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.

[0083] According to an embodiment of the present invention, another aspect provides an air handling device including the dust removal device 40 described above.

[0084] In one embodiment, the air handling equipment further includes a filtration device comprising a filter screen 31 and a second brush body 311. The filter screen 31 is rotatably disposed on the side of the dust removal device 40, and the second brush body 311 is connected to the surface of the filter screen 31 and is used to clean the first brush body 452.

[0085] The filter 31 rotates, which drives the second brush body 311 to rotate. When the second brush body 311 rotates to contact the first brush body 452, the first brush body 452 crosses the second brush body 311, and the second brush body 311 can clean the first brush body 452, thus realizing the self-cleaning of the first brush body 452.

[0086] In a specific implementation, both the first brush body 452 and the second brush body 311 are brush bristles.

[0087] Alternatively, in other embodiments, the first brush body 452 is bristles and the second brush body 311 is teeth.

[0088] 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, moving the suction port 421 of the first segment 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 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 rotated...the Nth segment ... The cleaning 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.

[0089] In one embodiment, the air handling device is an air purifier.

[0090] As an alternative implementation, the air handling unit can also be a humidification structure with a filtration function.

[0091] Although embodiments of the 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 invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A dust removal device, characterized in that, For cleaning the filter screen (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 disposed inside the suction housing (41). The suction pipe (42) is provided with a suction port (421) and a dust outlet (422). The suction port (421) has a suction position corresponding to the first opening (411). The negative pressure structure (43) includes an air pump (432) connected to the dust outlet (422); A pressure plate (44) is connected to the first opening (411), and the pressure plate (44) is provided with a second opening (441). A cleaning brush (45) is movably connected inside the vacuum cleaner housing (41). The cleaning brush (45) includes a first brush body (452), which has an extended position that extends out of the vacuum cleaner housing (41) through a second opening (441) and a retracted position that is stored inside the vacuum cleaner housing (41). When the vacuum port (421) is in the vacuum position and the first brush body (452) is in the extended position, the first brush body (452) contacts the filter screen (31), and the pressure plate (44) limits the cleaning brush (45). A drive structure (46) is connected to the cleaning brush (45) and is used to drive the cleaning brush (45) to reciprocate between the extended position and the retracted position.

2. The dust removal device according to claim 1, characterized in that, The cleaning brush (45) also includes a cleaning bracket (451), and the first brush body (452) is connected to the cleaning bracket (451); when the suction port (421) is in the suction position and the first brush body (452) is in the extended position, the pressure plate (44) limits the cleaning bracket (451).

3. The dust removal device according to claim 2, characterized in that, The cleaning bracket (451) includes a bracket frame, on which a third opening (453) is provided. The third opening (453) connects the second opening (441) and the suction port (421) located 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 pressure plate (44) is limited and abuts against the limiting rib (454).

4. The dust removal device according to claim 2 or 3, characterized in that, The drive structure (46) includes an elastic element (461) connected between the pressure plate (44) and the cleaning bracket (451).

5. The dust removal device according to claim 4, characterized in that, The elastic element (461) is a spring. A first limiting post protrudes from the side of the 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).

6. The dust removal device according to claim 5, characterized in that, 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) in corresponding order. The pressure plate (44) is provided with at least two second openings (441) in corresponding order. The cleaning brush (45) is provided with at least two in corresponding order. The number of suction ports (421), first openings (411), second openings (441) and cleaning brushes (45) are provided in a one-to-one correspondence. Each second opening (441) is provided with a first limiting post at both ends in the axial direction. 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).

7. The dust removal device according to any one of claims 1 to 3, 5, or 6, characterized in that, The pressure plate (44) is detachably connected to the first opening (411).

8. The dust removal device according to claim 7, characterized in that, Also includes: The first snap-fit ​​portion (442) is provided on the pressure plate (44); The second snap-fit ​​part (412) is disposed on the vacuum housing (41) and located at the first opening (411), and the first snap-fit ​​part snaps into the second snap-fit ​​part (412).

9. The dust removal device according to any one of claims 1 to 3, 5, or 6, characterized in that, The drive structure (46) also includes: A drive motor (462) is connected to one end of the vacuum 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 pipe (42); The transmission part (463) is provided on the suction pipe (42) and is in transmission cooperation with the cleaning brush (45).

10. The dust removal device according to claim 9, characterized in that, The transmission part (463) is a cam structure, and the cleaning brush (45) has a protruding mating part that cooperates with the transmission part (463).

11. An air handling device, characterized in that, The dust removal device (40) includes any one of claims 1 to 10.

12. The air handling equipment according to claim 11, characterized in that, It also includes a filtration device, which includes a filter screen (31) and a second brush body (311). The filter screen (31) is rotatably disposed on the side of the dust removal device (40), and the second brush body (311) is connected to the surface of the filter screen (31) and is used to clean the first brush body (452).

13. The air handling equipment according to claim 11, characterized in that, The air handling equipment is an air purifier.

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