Filter screen cleaning assembly and purifier

Abstract

The utility model discloses a filter screen cleaning assembly and a purifier, and relates to the technical field of air purification equipment, and the filter screen cleaning assembly comprises a driving module and a cleaning module; the driving module comprises a motor, an adapter and a screw rod, and the screw rod is in transmission connection with the motor through the adapter; the cleaning module is in threaded fit with the lead screw and used for being arranged on the surface of the filter screen to make contact with the dust collection face of the filter screen, and the motor drives the lead screw to rotate through the adapter so that the cleaning module can move in the extending direction of the lead screw and do reciprocating motion on the surface of the filter screen to scrape the dust collection face. According to the technical scheme, the filter screen cleaning assembly is low in cost.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment technology, and in particular to a filter cleaning component and purifier. Background Technology

[0002] An air purifier is a product that can adsorb, decompose, or transform various air pollutants, effectively improving air cleanliness. The filter is the component in the purifier used to adsorb air pollutants and needs to be replaced regularly to ensure effective air purification. However, frequent filter replacements increase the user's workload.

[0003] In related technologies, a cleaning module is used to self-clean the filter screen. This is usually achieved by using a lead screw motor to drive the cleaning module to move, but lead screw motors are relatively expensive. Utility Model Content

[0004] The main purpose of this utility model is to propose a filter cleaning component and purifier, aiming to provide a low-cost filter cleaning component.

[0005] To achieve the above objectives, this utility model proposes a filter cleaning assembly, comprising:

[0006] The drive module includes a motor, an adapter, and a lead screw, wherein the lead screw is connected to the motor via the adapter.

[0007] A cleaning module is threadedly engaged with the lead screw and is disposed on the surface of the filter screen to contact the dust collection surface of the filter screen. The motor drives the lead screw to rotate through the adapter, so that the cleaning module moves along the extension direction of the lead screw and reciprocates on the surface of the filter screen to scrape the dust collection surface.

[0008] In one embodiment, the lead screw extends vertically, and the cleaning module moves up and down on the surface of the filter screen as it moves along the extension direction of the lead screw.

[0009] In one embodiment, the filter cleaning assembly further includes a mounting base, on which the motor is mounted;

[0010] The cleaning module includes a cleaning body and a slider. The slider is threadedly engaged with the lead screw and slidably engaged with the fixed seat. The cleaning body is connected to the slider and contacts the dust collection surface of the filter. The cleaning body and the slider can be separate or integrated.

[0011] In one embodiment, the fixed base is provided with a guide rail extending along the length direction of the lead screw, and the slider is provided with a sliding groove, the guide rail and the sliding groove being slidably engaged.

[0012] In one embodiment, the surface of the guide rail is provided with a first rib extending along the length direction of the lead screw, and the first rib slides in engagement with the groove wall of the slide groove; or, the groove wall of the slide groove is provided with a first rib extending along the length direction of the lead screw, and the first rib slides in engagement with the surface of the guide rail.

[0013] And / or, the groove wall of the slide is provided with a second rib extending along the length direction of the lead screw, and the second rib slides in contact with the surface of the guide rail.

[0014] In one embodiment, the surface of the slider that mates with the fixed base is provided with a roller, and the roller is in rolling contact with the fixed base.

[0015] In one embodiment, the fixed base is provided with a rolling groove, the slider moves within the rolling groove, and the roller rolls in contact with the groove wall surface of the rolling groove.

[0016] In one embodiment, the fixed base has a notch on one side that communicates with the rolling groove, and the slider has a connecting part on one side that extends from the notch and connects to the cleaning body.

[0017] In one embodiment, the slider has a first side, a second side, a third side, a fourth side, and a fifth side disposed opposite to the groove wall of the rolling groove;

[0018] The first side and the second side are disposed close to the notch, the third side and the fourth side are adjacent to the first side and the second side respectively, and the fifth side is disposed between the third side and the fourth side;

[0019] The roller is provided on at least one of the first side, the second side, the third side, the fourth side, and the fifth side.

[0020] In one embodiment, the first side, the second side, the third side, the fourth side, and the fifth side are all provided with the roller.

[0021] In one embodiment, at least one of the adapter, the lead screw, and the cleaning module is a plastic component.

[0022] In one embodiment, the cleaning body includes:

[0023] A cleaning bracket is connected to the slider;

[0024] A cleaning brush is attached to the cleaning bracket and extends circumferentially along the filter.

[0025] In one embodiment, the adapter has a first connecting groove and a second connecting groove at both ends, the output shaft of the motor is inserted into the first connecting groove, and one end of the lead screw is inserted into the second connecting groove.

[0026] To achieve the above objectives, this utility model also proposes an air purifier, comprising:

[0027] The casing is equipped with an air inlet;

[0028] The purification body is located inside the housing and includes a filter screen, with the dust collection surface on the outer periphery of the filter screen corresponding to the air inlet.

[0029] The filter cleaning assembly described above is located inside the housing.

[0030] The technical solution of this utility model is to make the drive module include a motor, an adapter and a lead screw. The motor can drive the lead screw to rotate through the adapter, so that the cleaning module moves along the extension direction of the lead screw and reciprocates on the surface of the filter screen, which can periodically scrape the dust collection surface of the filter screen. The drive module using a combination of a common motor, adapter and lead screw replaces the conventional lead screw motor, which is much cheaper than the conventional lead screw motor, thus effectively reducing the cost of the filter screen cleaning component.

[0031] In addition, the filter can be automatically cleaned periodically by the filter cleaning component, allowing the filter to be reused, thereby reducing the frequency of filter replacement and reducing the workload for users. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of an embodiment of the filter cleaning assembly provided by this utility model;

[0034] Figure 2 Exploded view of an embodiment of the filter cleaning assembly provided by this utility model;

[0035] Figure 3 A cross-sectional view of a location in an embodiment of the filter cleaning assembly provided by this utility model;

[0036] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0037] Figure 5 A cross-sectional view of another location in an embodiment of the filter cleaning assembly provided by this utility model;

[0038] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0039] Figure 7 A schematic diagram of another embodiment of the filter cleaning assembly provided by this utility model;

[0040] Figure 8 Exploded view of another embodiment of the filter cleaning assembly provided by this utility model;

[0041] Figure 9 A cross-sectional view of a location in another embodiment of the filter cleaning assembly provided by this utility model;

[0042] Figure 10 for Figure 9 A magnified view of a section at point C;

[0043] Figure 11 A cross-sectional view of another embodiment of the filter cleaning assembly provided by this utility model at another location;

[0044] Figure 12 A schematic diagram of another embodiment of the filter cleaning assembly provided by this utility model;

[0045] Figure 13 An exploded view of an embodiment of the air purifier provided by this utility model.

[0046] Explanation of icon numbers:

[0047] label name label name 1000 air purifier 22b Second side 100 Filter cleaning components 22c Third side 10 driver module 22d Fourth side 11 motor 22e Fifth side 111 Output shaft 30 Fixed base 12 Adapter 31 guide 121 First connecting groove 311 First tendon 122 Second connecting slot 32 Scroll groove 13 Lead screw 33 gap 131 Connecting shaft 30a First trench wall 20 Cleaning module 30b Second trench wall 21 Cleaning body 30c Third trench wall 211 Cleaning stand 30d Fourth trench wall 212 Cleaning brush 30e Fifth trench wall 22 slider 200 chassis 221 chute 20a air inlet 222 Second tendon 300 Purify the body 223 roller 310 Filter 22a First side view

[0048] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0050] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0052] An air purifier is a product that can adsorb, decompose, or transform various air pollutants, effectively improving air cleanliness. The filter is the component in the purifier used to adsorb air pollutants and needs to be replaced regularly to ensure effective air purification. However, frequent filter replacements increase the user's workload.

[0053] In related technologies, a cleaning module is used to self-clean the filter screen. This is usually achieved by using a lead screw motor to drive the cleaning module to move, but lead screw motors are relatively expensive.

[0054] Based on the above problems, this utility model proposes a filter cleaning component 100, applied in an air purifier 1000, aiming to provide a low-cost filter cleaning component 100. In one embodiment, the air purifier 1000 includes a housing 200, a purification body 300, and the filter cleaning component 100. The housing 200 is provided with an air inlet 20a and a discharge port. The purification body 300 includes a filter 310 and an ion generator. The ions generated by the ion generator can be released into the air through the discharge port of the housing 200. The ions attach to pollutants in the air, making the pollutants charged. Since the voltage applied to the filter 310 is opposite to that of the ion generator, the pollutants can be charged with the opposite charge to the filter 310, thereby accelerating the movement of pollutants towards the dust collection surface of the filter 310, thus improving the adsorption capacity of the filter 310 and enhancing the air purification capacity and efficiency. The structure of the filter cleaning component 100 will be described below by way of an embodiment.

[0055] Please see Figures 1 to 6 In one embodiment of this utility model, the filter cleaning assembly 100 includes a drive module 10 and a cleaning module 20. The drive module 10 includes a motor 11, an adapter 12, and a lead screw 13. The lead screw 13 is connected to the motor 11 via the adapter 12. The cleaning module 20 is threadedly engaged with the lead screw 13 and is used to be disposed on the surface of the filter screen 310 to contact the dust collection surface of the filter screen 310. The motor 11 drives the lead screw 13 to rotate via the adapter 12, so that the cleaning module 20 moves along the extension direction of the lead screw 13 and reciprocates on the surface of the filter screen 310 to scrape the dust collection surface.

[0056] It should be noted that the adapter 12 is equivalent to a coupling, which can connect the output shaft 111 of the motor 11 to the lead screw 13, so as to ensure that the output shaft 111 of the motor 11 drives the lead screw 13 to rotate through the adapter 12.

[0057] Understandably, the cleaning module 20 repeatedly scrapes the dust collection surface of the filter 310 during its reciprocating motion, thereby scraping off the contaminants on the filter 310 to achieve a self-cleaning function.

[0058] In practical applications, the filter 310 can collect dust from its outer surface, inner surface, or planar surface. When the filter 310 uses outer surface dust collection, the cleaning module 20 is positioned on the outer periphery of the filter 310 to contact the dust collection surface, and the drive module 10 drives the cleaning module 20 to reciprocate on the outer periphery of the filter 310. When the filter 310 uses inner surface dust collection, the cleaning module is positioned on the inner periphery of the filter 310 to contact the dust collection surface, and the drive module 10 drives the cleaning module 20 to reciprocate on the inner periphery of the filter 310. When the filter 310 uses planar surface dust collection, the cleaning module 20 is positioned on the planar surface of the filter 310 to contact the dust collection surface, and the drive module 10 drives the cleaning module 20 to reciprocate on the planar surface of the filter 310.

[0059] In practical applications, under the action of motor 11, adapter 12 and lead screw 13, the cleaning module 20 can be driven to reciprocate up and down on the surface of filter screen 310, or it can be driven to reciprocate circumferentially on the surface of filter screen 310, or it can be driven to reciprocate horizontally on the surface of filter screen 310. As long as the contaminants on filter screen 310 can be scraped off during the reciprocating motion, it is acceptable.

[0060] In practical applications, the cleaning module 20 can be in the shape of a ring, a semi-ring, a strip, or a wave, depending on the shape of the dust collection surface of the filter 310. As long as the cleaning module 20 matches the dust collection surface of the filter 310, the contaminants on the filter 310 can be thoroughly scraped off.

[0061] Furthermore, the structure of the cleaning module 20 that comes into contact with the dust collection surface of the filter 310 can be a hanging strip, scraper, brush, towel, or other structural components, as long as they can smoothly scrape off the contaminants on the filter 310 during the reciprocating motion.

[0062] In summary, the technical solution of this utility model includes a drive module 10 comprising a motor 11, an adapter 12, and a lead screw 13. The motor 11 can drive the lead screw 13 to rotate through the adapter 12, so that the cleaning module 20 moves along the extension direction of the lead screw 13 and reciprocates on the surface of the filter screen 310, thereby periodically scraping the dust collection surface on the outer periphery of the filter screen 310. The drive module 10, which uses a combination of a common motor 11, an adapter 12, and a lead screw 13, replaces the conventional lead screw motor, and the cost is much lower than that of a conventional lead screw motor, thus effectively reducing the cost of the filter cleaning component 100.

[0063] In addition, since the filter screen 310 can be automatically cleaned periodically by the filter screen cleaning component 100, the filter screen 310 can be reused, thereby reducing the frequency of filter screen 310 replacement and reducing the workload of users.

[0064] Please see Figure 1 , Figure 2 In one embodiment of this utility model, the lead screw 13 extends vertically, and when the cleaning module 20 moves along the extension direction of the lead screw 13, it reciprocates up and down on the surface of the filter screen 310.

[0065] With this configuration, when the motor 11 drives the lead screw 13 to rotate through the adapter 12, it can drive the cleaning module 20 to repeatedly scrape the dust collection surface of the filter screen 310 in a reciprocating lifting manner. This not only makes the movement stability of the cleaning module 20 more reliable, but also scrapes the pollutants down to the dust collection box below for collection.

[0066] It should be noted that "vertical" refers to the vertical direction of the purifier 1000 when it is in use.

[0067] In practical applications, the drive module 10 can be located either on the outside or inside of the filter 310, as long as the drive module 10 can drive the cleaning module 20 to reciprocate up and down on the outer periphery of the filter 310. For example, when the drive module 10 is located on the inside of the filter 310, since the cleaning module 20 is located on the outer periphery of the filter 310, a clearance channel can be provided on one side of the filter 310. This clearance channel provides space for the drive module 10 and the cleaning module 20 to connect.

[0068] Please see Figure 1 , Figure 2 In one embodiment of this utility model, the filter cleaning assembly 100 further includes a fixed base 30, and the motor 11 is mounted on the fixed base 30; the cleaning module 20 includes a cleaning body 21 and a slider 22, the slider 22 is threadedly engaged with the lead screw 13 and slidably engaged with the fixed base 30, the cleaning body 21 is connected to the slider 22 and contacts the dust collection surface of the filter 310; the cleaning body 21 and the slider 22 are separate structures or integrated structures.

[0069] This configuration, by mounting the motor 11 on the fixed base 30, provides stable support for the motor 11, improving its installation reliability. Furthermore, by using the slider 22 in sliding engagement with the fixed base 30, the fixed base 30 can limit and guide the slider 22, improving the stability of the cleaning module 20 during reciprocating motion. Additionally, the fixed base 30 can also serve as the main frame of the entire filter cleaning assembly 100, acting as a bridge connecting the entire filter cleaning assembly 100 to the outside environment, facilitating the installation and fixation of the entire filter cleaning assembly 100 onto the machine or platform.

[0070] In practical applications, when the cleaning body 21 and the slider 22 are separate structures, the cleaning body 21 of different shapes and sizes can be replaced for different cleaning objects. For example, it can be replaced with a strip-shaped cleaning body 21. (See reference...) Figure 12 As shown; when the cleaning body 21 and the slider 22 are an integral structure, the cleaning body 21 and the slider 22 are a single component, which makes it easier to assemble the cleaning module 20.

[0071] In some embodiments, the fixed base 30 may be provided with a limiting hole, and the end of the lead screw 13 away from the motor 11 may be inserted into the limiting hole of the fixed base 30 and may rotate within the limiting hole to support and limit the lead screw 13.

[0072] Please see Figure 4 In one embodiment of the present invention, the fixed base 30 is provided with a guide rail 31 extending along the length direction of the lead screw 13, and the slider 22 is provided with a sliding groove 221, and the guide rail 31 and the sliding groove 221 are slidably engaged.

[0073] This configuration allows the slider 22 to be guided by the cooperation of the guide rail 31 and the slide groove 221, which can further improve the stability of the slider 22 during the sliding process, thereby improving the stability of the cleaning module 20 during the reciprocating motion and improving the cleaning effect on the filter 310.

[0074] In practical applications, the fixed base 30 can be provided with one or at least two guide rails 31, and correspondingly, the slider 22 can also be provided with one or at least two sliding grooves 221. Optionally, in order to improve the guiding effect on the slider 22, guide rails 31 can be provided on both opposite sides of the fixed base 30, and sliding grooves 221 can be provided on both opposite sides of the slider 22, so that the two guide rails 31 and the two guide grooves slide in cooperation respectively.

[0075] Please see Figure 4 In one embodiment of the present invention, the surface of the guide rail 31 is provided with a first rib 311 extending along the length direction of the lead screw 13, and the first rib 311 slides in cooperation with the groove wall of the slide groove 221; or, the groove wall of the slide groove 221 is provided with a first rib 311 extending along the length direction of the lead screw 13, and the first rib 311 slides in cooperation with the surface of the guide rail; and / or, the groove wall of the slide groove 221 is provided with a second rib 222 extending along the length direction of the lead screw 13, and the second rib 222 slides in cooperation with the surface of the guide rail 31.

[0076] In this embodiment, the first rib 311 can be set on the fixed seat 30 or the slider 22, and the corresponding injection mold processing is not complicated; however, if the second rib 222 is set on the guide rail 31 of the fixed seat 30, the injection mold processing corresponding to the fixed seat 30 is more complicated and the cost is higher. Therefore, the second rib 222 is set on the slider 22.

[0077] With this configuration, the first rib 311 and / or the second rib 222 can reduce the contact area between the slider 22 and the fixed seat 30 through the cooperation of lines and surfaces, thereby reducing the friction between the slider 22 and the fixed seat 30 during the sliding process.

[0078] In some embodiments, in order to further reduce the contact area between the slider 22 and the fixed seat 30, the first rib 311 and the second rib 222 can be trapezoidal ribs, so that the short side of the first rib 311 slides with the groove wall of the slide groove 221 and the short side of the second rib 222 slides with the surface of the guide rail 31.

[0079] Furthermore, the cross-sections of the guide rail 31 and the slide groove 221 can also be trapezoidal, so that the width of the slide groove 221 gradually increases from the bottom of the groove to the opening of the groove, which facilitates the installation and matching of the guide rail 31 and the slider 22.

[0080] Please see Figures 7 to 11 In another embodiment of the present invention, the surface of the slider 22 that cooperates with the fixed seat 30 is provided with a roller 223, and the roller 223 and the fixed seat 30 are in rolling cooperation.

[0081] With this configuration, when the slider 22 reciprocates along the outer periphery of the filter screen 310 under the rotation of the lead screw 13, the roller 223 on the slider 22 will roll and engage with the fixed seat 30, so that the engagement mode between the slider 22 and the fixed seat 30 changes from sliding to rolling. This can reduce the friction between the slider 22 and the fixed seat 30, making the movement of the slider 22 smoother.

[0082] In one embodiment, the surface of the slider 22 that mates with the fixed base 30 may be provided with a mounting groove, the roller 223 is rotatably mounted in the mounting groove, and the outer surface of the roller 223 protrudes from the mounting groove to rotatably engage with the fixed base 30.

[0083] In practical applications, slider 22 can be equipped with one or at least two rollers 223, depending on the actual usage.

[0084] Please see Figure 8 , Figure 10 In another embodiment of the present invention, the fixed base 30 is provided with a rolling groove 32, the slider 22 moves in the rolling groove 32, and the roller 223 rolls with the groove wall surface of the rolling groove 32.

[0085] With this configuration, by mounting the slider 22 in the rolling groove 32 so that it can move within the rolling groove 32, the slider 22 can be guided by the rolling groove 32, which can further improve the stability of the slider 22 during the sliding process, thereby improving the stability of the cleaning module 20 during the reciprocating motion, and thus improving the cleaning effect on the filter 310.

[0086] Please see Figure 8 , Figure 10 In another embodiment of the present invention, the fixed base 30 is provided with a notch 33 on one side that communicates with the rolling groove 32, and the slider 22 is provided with a connecting part on one side. The connecting part extends out from the notch 33 and connects with the cleaning body 21.

[0087] With this design, the notch 33 can be used to avoid the connecting part, allowing the connecting part to pass through. When the slider 22 moves within the rolling groove 32, the connecting part can move along the notch 33, thus avoiding obstruction of the movement of the cleaning module 20.

[0088] Of course, in other embodiments, a connecting rod can also be provided on the top of the slider 22. The connecting rod can extend from the top of the rolling groove 32 and bend to one side of the cleaning body 21 to connect with the cleaning body 21. In this way, the slider 22 and the cleaning body 21 can be connected through the connecting rod, and the slider 22 can drive the cleaning body 21 to move through the connecting rod during the movement of the rolling groove 32.

[0089] Please see Figure 10 In another embodiment of the present invention, the slider 22 has a first side surface 22a, a second side surface 22b, a third side surface 22c, a fourth side surface 22d, and a fifth side surface 22e disposed opposite to the groove wall surface of the rolling groove 32. The first side surface 22a and the second side surface 22b are disposed close to the notch 33. The third side surface 22c and the fourth side surface 22d are adjacent to the first side surface 22a and the second side surface 22b, respectively. The fifth side surface 22e is disposed between the third side surface 22c and the fourth side surface 22d. At least one of the first side surface 22a, the second side surface 22b, the third side surface 22c, the fourth side surface 22d, and the fifth side surface 22e is provided with a roller 223.

[0090] With this configuration, by providing rollers 223 on at least one of the first side 22a, second side 22b, third side 22c, fourth side 22d, and fifth side 22e of the slider 22, the force on the slider 22 can be transferred to the rollers 223, and the rollers 223 can then transfer the force to the fixed seat 30. This reduces the force on the lead screw 13, protects the lead screw 13, and prevents it from deforming under stress, thus affecting its lifespan or accuracy.

[0091] In this embodiment, the sliding groove has a first groove wall surface 30a, a second groove wall surface 30b, a third groove wall surface 30c, a fourth groove wall surface 30d, and a fifth groove wall surface 30e. The first groove wall surface 30a is opposite to the first side surface 22a, the second groove wall surface 30b is opposite to the second side surface 22b, the third groove wall surface 30c is opposite to the third side surface 22c, the fourth groove wall surface 30d is opposite to the fourth side surface 22d, and the fifth groove wall surface 30e is opposite to the fifth side surface 22e. A roller 223 on the first side surface 22a rolls into contact with the first groove wall surface 30a, a roller 223 on the second side surface 22b rolls into contact with the second groove wall surface 30b, a roller 223 on the third side surface 22c rolls into contact with the third groove wall surface 30c, a roller 223 on the fourth side surface 22d rolls into contact with the fourth groove wall surface 30d, and a roller 223 on the fifth side surface 22e rolls into contact with the fifth groove wall surface 30e.

[0092] In one embodiment, rollers 223 can be provided on the first side 22a, the second side 22b, the third side 22c, the fourth side 22d, and the fifth side 22e of the slider 22. In this way, no matter which direction the slider 22 receives force from, it can transfer the force to the corresponding roller 223, so that the friction is small when moving and there will be no abnormal noise or other situations that affect the product experience.

[0093] It should be noted that when the slider 22 is not subjected to force in a certain direction, the roller 223 corresponding to that direction can be canceled. For example, when the slider 22 is only subjected to tension and not pressure in a certain direction, the roller 223 corresponding to that direction can be canceled.

[0094] Please see Figure 2 , Figure 8 In one embodiment of this utility model, at least one of the adapter 12, the lead screw 13, and the cleaning module 20 is a plastic part. That is, except for the motor 11, all other parts of the filter cleaning assembly 100 can be made of plastic.

[0095] With this configuration, by using plastic parts to manufacture components such as the adapter 12, lead screw 13, and cleaning module 20, the cost of the filter cleaning assembly 100 can be further reduced compared to using metal parts.

[0096] In practical applications, components such as adapter 12, lead screw 13, and cleaning module 20 can be made of phenolic plastic, epoxy plastic, unsaturated polyester plastic, etc.

[0097] Please see Figure 1 , Figure 7 In one embodiment of the present invention, the cleaning body 21 includes a cleaning bracket 211 and a cleaning brush 212; the cleaning bracket 211 is connected to the slider 22; the cleaning brush 212 is connected to the cleaning bracket 211 and extends along the circumference of the filter screen 310.

[0098] This configuration, by mounting the cleaning brush 212 on the cleaning bracket 211 and supporting the cleaning brush 212 through the cleaning bracket 211, not only improves the installation reliability of the cleaning brush 212, but also prevents the cleaning brush 212 from deforming when scraping the filter screen 310, thus affecting the cleaning effect on the filter screen 310.

[0099] In practical applications, the cross-section of the dust collection surface on the outer periphery of the filter screen 310 can be circular, rectangular, or other shapes. Correspondingly, the cross-section of the cleaning brush 212 can also be circular, rectangular, or other shapes, as long as the shape of the cleaning brush 212 matches the shape of the filter screen 310.

[0100] Please see Figure 6In one embodiment of the present invention, the two ends of the adapter 12 are respectively provided with a first connecting groove 121 and a second connecting groove 122, the output shaft 111 of the motor 11 is inserted into the first connecting groove 121, and one end of the lead screw 13 is inserted into the second connecting groove 122.

[0101] With this configuration, by inserting the output shaft 111 of the motor 11 into the first connecting groove 121 and inserting one end of the lead screw 13 into the second connecting groove 122, the transmission connection between the motor 11 and the lead screw 13 can be achieved through the adapter 12, which can ensure the reliability of the connection between the adapter 12 and the motor 11 and the lead screw 13.

[0102] In one embodiment, one end of the lead screw 13 may be provided with a connecting shaft 131, so that the connecting shaft 131 is inserted into the second connecting groove 122 of the adapter 12.

[0103] Optionally, the output shaft 111 of the motor 11 and the connecting shaft 131 of the lead screw 13 are both flat shafts. That is, the adapter 12 is connected to the output shaft 111 of the motor 11 and the connecting shaft 131 of the lead screw 13 in a flat position so that the torque of the motor 11 can be smoothly transmitted to the lead screw 13 through the adapter 12.

[0104] Please see Figure 13 This utility model also proposes an air purifier 1000, which includes a housing 200, a purification body 300, and a filter cleaning assembly 100. The specific structure of the filter cleaning assembly 100 is as described in the above embodiments. Since this air purifier 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The housing 200 is provided with an air inlet 20a; the purification body 300 is disposed inside the housing 200 and includes a filter 310, with the dust collection surface on the outer periphery of the filter 310 corresponding to the air inlet 20a; the filter cleaning assembly 100 is disposed inside the housing 200.

[0105] Understandably, after the filter 310 has purified the air for a period of time, the motor 11 can drive the lead screw 13 to rotate via the adapter 12, causing the cleaning module 20 to move along the extension direction of the lead screw 13 and reciprocate on the outer periphery of the filter 310. This periodically scrapes the dust collection surface on the outer periphery of the filter 310. The drive module 10, which uses a combination of a common motor 11, adapter 12, and lead screw 13, replaces the conventional lead screw motor, resulting in a much lower cost and effectively reducing the cost of the filter cleaning assembly 100. Furthermore, since the filter cleaning assembly 100 can periodically and automatically clean the filter 310, the filter 310 can be reused, reducing the frequency of filter replacement and decreasing the user's workload.

[0106] In one embodiment, a dust collection box may be provided below the filter 310 to collect contaminants scraped off by the cleaning module 20. The user only needs to remove the dust collection box from the housing and clean the contaminants inside.

[0107] In one embodiment, the filter 310 generates an electric field when energized, forming an electric field region in front of the dust collection surface of the filter 310. Pollutants in this electric field region are polarized and move towards the dust collection surface under the influence of Coulomb force until they are adsorbed onto the dust collection surface. Alternatively, pollutants in the electric field region become charged and adsorb onto the dust collection surface. This adsorption reduces the concentration of pollutants in the electric field region. The concentration difference causes pollutants outside the electric field region to migrate towards the lower concentration electric field region. Wind force can also cause pollutants outside the electric field region to migrate towards the lower concentration electric field region, thereby reducing the overall concentration of pollutants in the environment and achieving an air purification effect.

[0108] The purifier 1000 collects pollutants using an electric field. The collected pollutants are adsorbed onto the dust collection surface of the filter 310. After use, the pollutants can be removed by washing or wiping the dust collection surface, eliminating the need for frequent filter replacements and reducing the operating cost of the purifier 1000. Since there is no filter 310, there are no consumables, and it can be cleaned and reused repeatedly, thus solving the pain points of existing purifiers 1000 that require frequent filter 310 replacements and are difficult to clean. At the same time, the noise generated by the filter 310 when powered on is relatively low, improving the user experience.

[0109] The pollutants mentioned in this application are mainly particulate pollutants, including dust, smoke, particulate matter, bacteria, and viruses in the air. They vary in diameter and can generally be classified into the following categories according to their diameter:

[0110] Visible particulate matter: Particulate matter with a diameter of 10 micrometers or less can be seen, such as dust, pollen, and human skin flakes.

[0111] Fine particulate matter: Particulate matter with a diameter of 2.5 micrometers or less, which cannot be seen with the naked eye, but has a significant impact on human health, such as automobile exhaust and factory exhaust.

[0112] Ultrafine particles: Particles with a diameter of 0.1 micrometers or less, which cannot be seen with the naked eye, but can penetrate deep into the human respiratory tract and have a greater impact on human health, such as viruses and bacteria.

[0113] Optionally, the housing 200 may be provided with a discharge port; the purification body 300 may also include an ion generator, with the filter 310 and the ion generator having opposite energizing voltages. The ions generated by the ion generator are released into the air through the discharge port. These ions attach to pollutants in the air, causing them to become charged. Because the filter 310 has an opposite energizing voltage to the ion generator, the pollutants can become charged with the opposite charge to the filter 310, causing them to move faster towards the dust collection surface of the filter 310. This enhances the adsorption capacity of the filter 310, thereby improving air purification capacity and efficiency.

[0114] At the same time, the ions released by the ion generator can also sterilize and reduce the content of toxic substances in the air to protect the health of users.

[0115] It should be noted that when the ion generator emits negative ions, the filter 310 is supplied with positive DC high voltage; when the ion generator emits positive ions, the filter 310 is supplied with negative DC high voltage.

[0116] In this embodiment, one of the positive and negative terminals on the power supply component can be connected to the filter 310, and the other can be electrically connected to the ion generator, so that the polarity of the ions accumulated on the filter 310 and the ions released by the ion generator are opposite.

[0117] Optionally, the ion generator may include a high-voltage transformer and an emitter head; the emitter head is electrically connected to the high-voltage transformer, which supplies power to the emitter head to generate ions corresponding to the electrodes and spray the ions into the air through the discharge port. This allows the ions to be sprayed into a larger area of ​​the air near the purifier 1000, thereby improving the air purification effect.

[0118] Optionally, a fan can also be installed inside the casing 200. When the fan is working, it can generate a directional airflow, which can drive the ions generated by the ion generator to diffuse into the air, so that more pollutants in the air can be attached by the ions. It can also drive the charged pollutants in the air to move towards the filter 310, thereby accelerating the airflow around the purifier 1000. This, together with the filter 310 and the ion generator, can improve the air purification capacity. At the same time, the directional flow of ions can sterilize the pollutants in the airflow, thereby reducing the content of toxic substances in the air and protecting the health of users.

[0119] Specifically, the fan may include a motor 11, a fan wheel, and an air duct. The motor 11 is used to drive the fan wheel to rotate in the air duct to generate negative pressure. Under the action of negative pressure, the air outside the purifier 1000 enters the air duct from the air inlet 20a and then flows out of the air from the discharge port to form an air circulation effect.

[0120] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A screen cleaning assembly, characterized by, include: The drive module includes a motor, an adapter, and a lead screw, wherein the lead screw is connected to the motor via the adapter. A cleaning module is threadedly engaged with the lead screw and is used to be disposed on the surface of the filter screen to contact the dust collection surface of the filter screen. The motor drives the lead screw to rotate through the adapter so that the cleaning module moves along the extension direction of the lead screw and reciprocates on the surface of the filter screen to scrape the dust collection surface. The adapter has a first connecting groove and a second connecting groove at both ends, the output shaft of the motor is inserted into the first connecting groove, and one end of the lead screw is inserted into the second connecting groove.

2. The screen cleaning assembly of claim 1, wherein, The lead screw extends vertically, and when the cleaning module moves along the extension direction of the lead screw, it reciprocates up and down on the surface of the filter screen.

3. The screen cleaning assembly of claim 1, wherein, The filter cleaning assembly also includes a mounting base, and the motor is mounted on the mounting base; The cleaning module includes a cleaning body and a slider. The slider is threadedly engaged with the lead screw and slidably engaged with the fixed seat. The cleaning body is connected to the slider and contacts the dust collection surface of the filter. The cleaning body and the slider can be separate or integrated.

4. The screen cleaning assembly of claim 3, wherein, The fixed base is provided with a guide rail extending along the length direction of the lead screw, and the slider is provided with a sliding groove, with the guide rail and the sliding groove slidingly engaged.

5. The screen cleaning assembly of claim 4, wherein, The surface of the guide rail is provided with a first rib extending along the length direction of the lead screw, and the first rib slides in cooperation with the groove wall of the slide groove; or, the groove wall of the slide groove is provided with a first rib extending along the length direction of the lead screw, and the first rib slides in cooperation with the surface of the guide rail. And / or, the groove wall of the slide is provided with a second rib extending along the length direction of the lead screw, and the second rib slides in contact with the surface of the guide rail.

6. The screen cleaning assembly of claim 3, wherein, The surface of the slider that mates with the fixed base is provided with a roller, and the roller is in rolling contact with the fixed base.

7. The screen cleaning assembly of claim 6, wherein, The fixed base is provided with a rolling groove, the slider moves in the rolling groove, and the roller rolls in contact with the groove wall.

8. The screen cleaning assembly of claim 7, wherein, The fixed base has a notch on one side that communicates with the rolling groove, and the slider has a connecting part on one side that extends out from the notch and connects to the cleaning body.

9. The screen cleaning assembly of claim 8, wherein, The slider has a first side, a second side, a third side, a fourth side, and a fifth side that are disposed opposite to the groove wall of the rolling groove; The first side and the second side are disposed close to the notch, the third side and the fourth side are adjacent to the first side and the second side respectively, and the fifth side is disposed between the third side and the fourth side; The roller is provided on at least one of the first side, the second side, the third side, the fourth side, and the fifth side.

10. The screen cleaning assembly of claim 9, wherein, The first side, the second side, the third side, the fourth side, and the fifth side are all provided with the roller.

11. The screen cleaning assembly of claim 3, wherein, At least one of the adapter, the lead screw, and the cleaning module is a plastic part.

12. The screen cleaning assembly of claim 3, wherein, The cleaning body includes: A cleaning bracket is connected to the slider; A cleaning brush is attached to the cleaning bracket and extends circumferentially along the filter.

13. A purifier characterized by comprising: include: A casing is provided with an air inlet; A purification body is provided in the casing and includes a filter screen, and a dust collecting surface on the outer periphery of the filter screen corresponds to the air inlet; The filter screen cleaning assembly according to any one of claims 1 to 12 is provided in the casing.

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