CN220793374U - Filter screen self-cleaning device and air purifier - Google Patents

Abstract

The utility model provides an automatic filter screen cleaning device and an air purifier, wherein the automatic filter screen cleaning device comprises a filter screen, a driving assembly, a cleaning assembly and a dust collecting box, the cleaning assembly is used for cleaning dirt on the surface of the filter screen, the driving assembly is used for driving the filter screen to rotate relative to the cleaning assembly, and the dust collecting box is arranged below the filter screen and is opposite to the cleaning assembly. According to the automatic filter screen cleaning device and the air purifier, the cleaning assembly is kept motionless and the falling position of dirt is kept unchanged all the time in the rotating process of the filter screen, most dirt can be collected in the dust collecting box opposite to the cleaning assembly, and the falling dirt can be cleaned by directly taking out the dust collecting box, so that the automatic filter screen cleaning device is convenient. Moreover, the cleaning component is fixed all the time, the contact area between the cleaning component and the filter screen is smaller, the size of the cleaning component is smaller, and the material cost, the mould cost, the injection molding cost and the processing cost are lower.

Description

Filter screen self-cleaning device and air purifier

Technical Field

The utility model belongs to the technical field of air purification, and particularly relates to an automatic filter screen cleaning device and an air purifier.

Background

The air purifier is used for purifying indoor air, and the indoor air purifier is arranged indoors, so that the indoor air quality can be improved, and the indoor air is ensured to be fresh. The filter screen for filtering air suspended matters such as dust, particles and the like is arranged in the air purifier, a large amount of dirt can be deposited on the surface of the filter screen after the filter screen is used for a period of time, and the filter screen can be cleaned regularly, such as the surface of the filter screen is cleaned manually, in order to ensure the air inlet efficiency and the air filtering effect of subsequent use. This results in great inconvenience to the user in cleaning up dust.

Disclosure of Invention

The embodiment of the utility model aims to provide an automatic filter screen cleaning device and an air purifier, which are used for solving the technical problems that the filter screen needs to be cleaned manually and is very inconvenient in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a filter screen self-cleaning device, including filter screen, drive assembly, cleaning assembly and dust collection box, cleaning assembly with the filter screen contact is in order to clear up the dirty on filter screen surface, drive assembly is used for the drive the filter screen is relative cleaning assembly is rotatory, the dust collection box set up in the below of filter screen and with cleaning assembly is just to setting up.

Optionally, the driving assembly comprises a motor and a driving gear driven by the motor, one end of the filter screen is provided with a driven gear, and the driving gear is meshed with the driven gear.

Optionally, the driven gear is located at the top of the screen.

Optionally, the filter screen includes filtering body, upper cover and lower cover, the upper cover with the lower cover is fixed in respectively filtering body's both ends, driven gear with upper cover integrated into one piece.

Optionally, the contact position of the driving gear and the driven gear is located outside the filter screen, and the driven gear is an external gear; or the contact position of the driving gear and the driven gear is positioned in the filter screen, and the driven gear is an internal gear.

Optionally, the automatic filter screen cleaning device further comprises a base, the dust collecting box is arranged in the base, and the dust collecting box is integrally formed with the base, or the dust collecting box is detachably connected with the base.

Optionally, the dust collecting box is detachably connected with the base, the base is provided with a sliding opening, and the dust collecting box is slidably connected with the base, so that the dust collecting box can enter and exit from the sliding opening.

Optionally, the filter screen is rotationally connected with the base through a rotation supporting structure;

the rotary supporting structure is arranged on the filter screen or the base and comprises a ball assembly or friction ribs capable of rotating automatically; or, the rotation supporting structure comprises a sliding rail and a sliding groove, wherein the sliding rail is arranged on one of the filter screen and the base, and the sliding groove is arranged on the other of the filter screen and the base.

Optionally, the filter screen automatic cleaning device further comprises a sterilizer.

The utility model also provides an air purifier, which comprises the automatic filter screen cleaning device.

The automatic filter screen cleaning device and the air purifier provided by the utility model have the beneficial effects that: compared with the prior art, the automatic filter screen cleaning device comprises a filter screen, a driving assembly, a cleaning assembly and a dust collecting box, wherein the driving assembly is used for driving the filter screen to rotate, and the cleaning assembly is used for cleaning dirt such as dust, particles and the like on the surface of the filter screen. Through setting up the filter screen in can be relative clean subassembly rotatory for the filter screen is when rotatory, clean subassembly and filter screen contact each other in order to strike off the dirty on filter screen surface, and at the rotatory in-process of filter screen, clean subassembly remains motionless, and dirty whereabouts position also remains unchanged throughout, and most dirty homoenergetic is collected in clean subassembly just in the dust collection box, and the dirt that just can clear up whereabouts is taken out to the dust collection box, and is comparatively convenient, does not need to demolish the manual cleanness of filter screen. Moreover, the cleaning component is fixed all the time, the contact area between the cleaning component and the filter screen is smaller, the volume of the cleaning component can be smaller, and the material cost, the mould cost, the injection molding cost and the processing cost are lower.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a first automatic filter screen cleaning device according to an embodiment of the present utility model;

FIG. 2 is a perspective view of a filter screen according to an embodiment of the present utility model;

FIG. 3 is a perspective view of a second automatic filter screen cleaning device according to an embodiment of the present utility model;

fig. 4 is a perspective view of a base according to an embodiment of the present utility model;

FIG. 5 is a perspective view of an air filter according to an embodiment of the present utility model;

fig. 6 is an internal structural view of an air filter according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1-a filter screen; 11-a filter body; 12-an upper cover; 13-a lower cover; 14-a driven gear; 2-a drive assembly; 21-an electric motor; 22-a drive gear; 3-cleaning assembly; 4-a dust collection box; 41-hand pushing opening; 5-a base; 51-ball seats; 52-a ball assembly; 521-balls; 53-slide port; 54-limiting walls; 55-an annular locating flange; 6-a sterilizer; 71-mesh enclosure; 72-upper shell; 73-middle spacer.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The air purifier is used for purifying indoor air, the filter screen is arranged in the air purifier, and when the air purifier works, the indoor air enters the air purifier and is discharged after being filtered by the filter screen. After the air purifier is used for a period of time, more dirt such as dust, particles and the like can be deposited on the surface of the filter screen, and the dirt can block meshes of the filter screen, so that the wind resistance of the air purifier is increased, and the air inlet and outlet efficiency is reduced. In order to prolong the service life of the filter screen, the filter screen can be detached from the air purifier, and dirt on the surface of the filter screen can be cleaned manually. Resulting in inconvenient cleaning of the filter screen. The present utility model proposes a new automatic filter screen cleaning device and air purifier to overcome the above problems.

The automatic filter screen cleaning device provided by the embodiment of the utility model is described.

Referring to fig. 1, the automatic filter screen cleaning device includes a filter screen 1, a driving assembly 2, a cleaning assembly 3 and a dust box 4.

The filter screen 1 is used for filtering gas passing through the filter screen 1, the gas enters from one side of the filter screen 1 and flows out from the other side of the filter screen 1, and dust, particles and the like in the gas are deposited on the filter screen 1. The screen 1 may be a cylindrical screen 1, the cylindrical screen 1 being hollow, and an air flow being introduced into the cylindrical screen 1 from the outer peripheral side thereof and then being discharged from the inner peripheral side of the cylindrical screen 1.

The cleaning component 3 is used for cleaning dirt on the surface of the filter screen 1, the cleaning component 3 is mutually abutted with the filter screen 1 when the filter screen 1 is cleaned, and dirt on the surface of the filter screen 1 can be scraped and removed through mutual friction between the cleaning component 3 and the filter screen 1. That is, the cleaning assembly 3 and the filter screen 1 are relatively moved, and during the relative movement, the cleaning assembly 3 and the filter screen 1 are always kept in an abutting state, and dirt can be scraped off from the surface of the filter screen 1.

The driving component 2 is used for driving the filter screen 1 to rotate relative to the cleaning component 3, that is, during the process of cleaning the filter screen 1, the filter screen 1 rotates, the cleaning component 3 is kept still, and dirt at the contact position of the filter screen 1 and the cleaning component 3 is scraped off along with the continuous rotation of the filter screen 1. Since the cleaning assembly 3 is kept still, the falling position of the dirt is also kept at the cleaning assembly 3, so that the dirt is concentrated and is easy to clean.

The dust box 4 is arranged below the filter screen 1 and is opposite to the cleaning component 3, and is used for collecting dirt falling from the filter screen 1. When the filter screen 1 is cleaned by the cleaning assembly 3, the cleaned dirt enters the dust collecting box 4 under the action of gravity, and after the dust collecting box 4 is full of dust, the dust collecting box 4 can be taken down to clean the dust collecting box 4. Thus, the user can clean dirt more conveniently, and the service life of the filter screen 1 is prolonged. The dust box is arranged so that a user can pour dirt once again after cleaning the filter screen 1 for a plurality of times, and the dirt is not required to be cleaned and poured after cleaning the filter screen 1 each time.

In the automatic filter screen cleaning device in the above embodiment, the driving component 2 is used for driving the filter screen 1 to rotate, and the cleaning component 3 is used for cleaning dirt such as dust, particles and the like on the surface of the filter screen 1. Through setting up filter screen 1 in can be relative clean subassembly 3 rotatory for filter screen 1 when rotatory, clean subassembly 3 and filter screen 1 contact each other in order to strike off the dirty on filter screen 1 surface, at the rotatory in-process of filter screen 1, clean subassembly 3 remains motionless, dirty whereabouts position also remains unchanged throughout, most dirty homoenergetic is collected in clean subassembly 3 just right dust collection box 4, directly takes out dust collection box 4 just can clear up the dirty that falls, it is comparatively convenient, need not demolish filter screen 1 manual cleaning. Moreover, the cleaning component 3 is fixed all the time, the contact area between the cleaning component and the filter screen 1 is smaller, the size of the cleaning component 3 can be smaller, and the material cost, the mould cost, the injection molding cost and the processing cost are lower.

In some embodiments of the present utility model, referring to fig. 1, the driving assembly 2 includes a motor 21 and a driving gear 22, and the motor 21 drives the driving gear 22 to rotate. The motor 21 is a driving member capable of outputting a rotational motion, and the driving gear 22 is connected to a rotational output end of the motor 21, thereby rotating the driving gear 22. One end of the filter screen 1 is provided with a driven gear 14, and a driving gear 22 is meshed with the driven gear 14. Thus, when the driving assembly 2 is operated, the motor 21 rotates the driving gear 22 and the driven gear 14, thereby rotating the screen 1. The rotation center shaft of the filter screen 1 is the center shaft, so that the filter screen 1 can rotate, and the filter screen 1 can always contact with the cleaning assembly 3 in the rotation process.

Optionally, a transmission assembly is disposed between the motor 21 and the driving gear 22, and the transmission assembly may be a speed reducer, a bevel gear for changing the transmission direction, or the like.

Alternatively, the driving gear 22 and the driven gear 14 are bevel gears; alternatively, the driving gear 22 and the driven gear 14 are spur gears.

In some embodiments, referring to fig. 1, the driven gear 14 is located at the top of the screen 1. When the filter screen 1 and the cleaning assembly 3 relatively move, dirt falls down along with the extending direction of the cleaning assembly 3, and the driven gear 14 is arranged at the top of the filter screen 1, so that no shielding part exists between the filter screen 1 and the dust collecting box 4, and the dirt can directly fall into the dust collecting box 4.

In other embodiments, the driven gear 14 is disposed at the bottom of the filter screen 1, the driven gear 14 is an external gear, a portion of the driven gear 14 protruding out of the peripheral wall of the filter screen 1 is provided with an avoidance port, the avoidance port is opposite to the dust collecting box 4, and dirt on the filter screen 1 can enter the dust collecting box 4 through the avoidance port. Alternatively, the driven gear 14 is disposed at the bottom of the filter screen 1, the driven gear 14 is an internal gear, and the driven gear 14 does not protrude from the outer peripheral wall of the filter screen 1, so that the collection of dirt by the dust box 4 is not affected even if the driven gear 14 is disposed at the bottom of the filter screen 1.

In some embodiments, referring to fig. 2, the filter screen 1 includes a filter body 11, an upper cover 12, and a lower cover 13, and the upper cover 12 and the lower cover 13 are respectively fixed to two ends of the filter body 11. The filter body 11 is cylindrical, and the both ends of filter body 11 are the both ends of filter body 11 in axial direction, and when the axial direction of filter screen 1 was vertical direction, the both ends of filter body 11 were its top and bottom respectively, and upper cover 12 and lower cover 13 are fixed in the top and the bottom of filter body 11 respectively. The upper and lower covers 12 and 13 may have a disc-shaped structure or a circular ring-shaped structure.

Alternatively, the driven gear 14 and the upper cover 12 are integrally formed, the gear and the driving gear 22 do not need to be additionally arranged to be meshed with each other, the structure of the upper cover 12 can be reasonably utilized, the upper cover 12 is designed into a gear structure, correspondingly, the fixed structure of the driven gear 14 and the upper cover 12 does not need to be arranged, and the assembly process is simpler.

Alternatively, the driven gear 14 and the upper cover 12 are formed separately and fixedly connected to each other. For example, the driven gear 14 and the upper cover 12 are engaged with each other, or the driven gear 14 and the upper cover 12 are fixedly connected to each other by a fixing member such as a screw.

In some embodiments of the present utility model, referring to fig. 1, the contact position between the driving gear 22 and the driven gear 14 is located outside the filter screen 1, and the driven gear 14 is an external gear. The filter screen 1 is cylindrical, the space surrounded by the inner peripheral wall of the filter screen 1 is the inside of the filter screen 1, and the space outside the outer peripheral wall of the filter screen 1 is the outside of the filter screen 1. In the driving assembly 2, the contact position of the driving gear 22 and the driven gear 14 is located outside the filter screen 1, that is, at least the driving gear 22 is disposed outside the filter screen 1 so as to be meshed with the driven gear 14 having external teeth. Wherein the outer edge of the driven gear 14 protrudes from the outer circumferential wall of the filter body 11, so that the outer teeth of the driven gear 14 can be engaged with the driving gear 22 outside the filter screen 1.

In some embodiments of the present utility model, the contact position between the driving gear 22 and the driven gear 14 is located inside the filter screen 1, and the driven gear 14 is an internal gear. That is, in the driving assembly 2, at least the driving gear 22 is provided inside the screen 1 so as to be engaged with the driven gear 14 having internal teeth. In this embodiment, the outer edge of the driven gear 14 does not protrude from the outer circumferential wall of the filter body 11, and thus does not block dirt, and the driven gear 14 may be provided at the upper cover 12 or at the lower cover 13.

In some embodiments of the present utility model, the drive assembly 2 includes a motor 21, a conveyor belt, a driving wheel, and a driven wheel secured to one end of the screen 1. The driving wheel is connected with the rotary movement end of the motor 21, and the conveyer belt is wound on the driving wheel and the driven wheel. When the driving component 2 works, the motor 21 works, the driving wheel rotates, and the driven wheel is driven to rotate through the conveyor belt, so that the filter screen 1 rotates relative to the cleaning component 3.

In some embodiments of the present utility model, referring to fig. 3 and 4, the automatic filter screen cleaning device further includes a base 5, where the base 5 is disposed at the bottom of the filter screen 1 and is used for supporting the filter screen 1. Because the filter screen 1 can rotate under the drive of the drive component 2, the base 5 can rotate to support the filter screen 1, so that the rotation of the filter screen 1 is more stable. The cross section of the base 5 can be circular and matched with the shape of the filter screen 1.

Optionally, referring to fig. 3 and 4, an annular positioning flange 55 is provided on the base 5, and the annular positioning flange 55 extends from the top of the base 5 toward the filter screen 1, so that the bottom portion of the filter screen 1 is located in the annular positioning flange 55, and the annular positioning flange 55 can limit the circumference of the filter screen 1, so that the filter screen 1 is more stable when rotating.

In some embodiments, the filter screen 1 and the base 5 are rotatably connected by a rotation support structure, and the rotation support structure is disposed on at least one of the filter screen 1 and the base 5, so that the rotation of the filter screen 1 is smoother.

Optionally, referring to fig. 4, the rotation support structure includes a ball assembly 52, where the ball assembly 52 can rotate, and in the process that the filter screen 1 rotates relative to the base 5, the ball assembly 52 can reduce sliding friction force between the filter screen 1 and the base 5, so that the rotation driving force of the filter screen 1 is smaller, further reducing resistance of the motor, and prolonging the service life of the motor. Specifically, the base 5 is provided with a ball seat 51, and the ball assembly 52 includes a plurality of balls 521, each ball 521 being provided in the ball seat 51, the balls 521 being rotatable relative to the ball seat 51; the bottom of the screen 1 and the portion of the ball 521 exposed to the ball seat 51 contact each other, and when the screen 1 rotates, the ball 521 rotates in the ball seat 51, reducing friction between the screen 1 and the base 5. Alternatively, the lower cover 13 of the filter screen 1 is provided with ball seats 51, and each ball 521 is correspondingly arranged in the ball seat 51.

Optionally, the rotary support structure comprises friction ribs provided on the lower cover 13 of the screen 1 or on the base 5. The friction rib is provided on the base 5 will be described below. The friction rib can have better wear resistance, so that the friction rib is ensured to have relatively longer service life. The friction ribs have smaller surface roughness and smoother surface, so that the sliding friction force of the filter screen 1 during rotation can be reduced. The friction rib may be circular arc, so that the contact position between the lower cover 13 and the friction rib is always circular arc, and a guiding structure may be arranged at the circular arc position or the surface of the circular arc position may be finished separately.

The top of the friction rib (the side facing away from the base 5) may be arc-shaped, so that the contact area between the friction rib and the lower cover 13 is smaller, and the sliding friction force is smaller.

Optionally, the rotation supporting structure comprises a sliding rail and a sliding groove, the sliding rail is arranged on one of the filter screen 1 and the base 5, the sliding groove is arranged on the other of the filter screen 1 and the base 5, and the filter screen 1 is rotationally more stable and smooth under the guidance of the sliding rail and the sliding groove through the mutual matching of the sliding rail and the sliding groove. The sliding rail and the sliding groove are circular and have the same rotating movement track as the filter screen 1.

In some embodiments, the dust box 4 is disposed inside the base 5, and the dust box 4 is integrally formed with the base 5. When the dust box 4 is full of dirt, the dust box 4 and the base 5 can be taken down together, and then the dirt is poured and the dust box 4 is cleaned. After the dust collection box 4 is cleaned, the base 5 and the dust collection box 4 are mounted on the bottom of the filter screen 1 together. The dust collection box 4 and the base 5 are integrally formed, so that the number of parts of the automatic cleaning device for the filter screen 1 can be reduced, and the assembly process is simpler.

Alternatively, the dust box 4 is provided inside the base 5, and the dust box 4 and the base 5 are detachably connected, that is, the dust box 4 can be detached from the base 5. When the dust box 4 is full of dirt, the dust box 4 can be removed from the base 5, and then the dirt can be poured and the dust box 4 can be cleaned. After the dust collection box 4 is cleaned, the dust collection box 4 is installed in the base 5. The dust box 4 and the base 5 are detachably connected, so that the dust box 4 is more convenient to assemble and disassemble, clean and install, the whole base 5 is not required to be cleaned, and the workload of dirt cleaning is relatively small.

The dust box 4 is connected with the base 5 in a sliding way, a sliding opening 53 is formed in the base 5, and the dust box 4 enters and exits the base 5 from the sliding opening 53. The side wall of the sliding opening 53 can limit the dust box 4, so that the dust box 4 can only slide in the area limited by the sliding opening 53 when sliding. The inside of base 5 also can set up two spacing walls 54, and two spacing walls 54 extend to two lateral walls of sliding port 53 respectively, and two spacing walls 54 also can guide dust collection box 4, restrict the position of dust collection box 4, make the business turn over slip of dust collection box 4 more smooth. Slide rails and slide grooves can also be arranged between the dust box 4 and the base 5, so that the dust box 4 can slide in and out more smoothly.

Optionally, when the dust collecting box 4 is located in the base 5, a hand pushing opening 41 is formed on one side, close to the surface of the base 5, of the dust collecting box 4, and a finger can extend into the hand pushing opening 41 to control the inlet and outlet of the dust collecting box 4.

In other embodiments, the dust box 4 is attached to the bottom of the filter screen 1, for example, the dust box 4 is attached to the lower cover 13 of the filter screen 1. The dust box 4 is connected with the lower cover 13 of the filter screen 1 through a buckle, or the dust box 4 is connected with the lower cover 13 of the filter screen 1 in a sliding way, one of the dust box 4 and the lower cover 13 is provided with a sliding rail, and the other is provided with a sliding groove, so that the dust box 4 can slide relative to the lower cover 13.

In some embodiments of the present utility model, referring to fig. 1, the automatic filter screen cleaning apparatus further includes a sterilizer 6, where the sterilizer 6 is used to kill microorganisms such as bacteria, spores and viruses in the dirt of the filter screen 1, so as to have a certain sterilization function on the indoor air. The sterilizer 6 can be arranged adjacent to the filter screen 1, and has better sterilization effect on microorganisms on the filter screen 1. For example, when the automatic cleaning device of the filter screen 1 works, the sterilizer 6 is started, the fan of the air purifier stops running, a large amount of sterilizing ions are gathered at the filter screen 1, and the sterilizing effect is more remarkable. After the automatic cleaning device of the filter screen 1 is finished, the sterilizer 6 can be selected to stop working or continue working.

Optionally, the sterilizer 6 is a negative ion generator, and can release a large amount of negative ions during operation so as to achieve the sterilization effect.

In some embodiments of the present utility model, referring to fig. 1, the cleaning element 3 is disposed in a strip shape, and the length direction of the cleaning element 3 is parallel to the axial direction of the filter screen 1, and the cleaning element 3 abuts against the surface of the filter screen 1 when cleaning the filter screen 1. The cleaning assembly 3 has smaller volume and lower module cost, material cost, injection molding cost, processing cost and the like. The cleaning assembly 3 may include a scraper or brush, etc., so long as it removes dirt from the filter screen 1 when rubbed against the filter screen 1.

Referring to fig. 5 and 6, the present utility model further provides an air purifier, which includes the automatic filter screen cleaning device in any of the above embodiments. The air purifier also comprises a fan and other structures. When the fan works, negative pressure is generated in the filter screen 1, so that external air passes through the filter screen 1, is filtered by the filter screen 1 and is discharged from the fan.

The utility model provides an air purifier, which adopts the automatic filter screen cleaning device, and the automatic filter screen cleaning device comprises a filter screen 1, a driving component 2, a cleaning component 3 and a dust collecting box 4, wherein the driving component 2 is used for driving the filter screen 1 to rotate, and the cleaning component 3 is used for cleaning dirt such as dust, particles and the like on the surface of the filter screen 1. Through setting up filter screen 1 in can be relative clean subassembly 3 rotatory for filter screen 1 when rotatory, clean subassembly 3 and filter screen 1 contact each other in order to strike off the dirty on filter screen 1 surface, at the rotatory in-process of filter screen 1, clean subassembly 3 remains motionless, dirty whereabouts position also remains unchanged throughout, most dirty homoenergetic is collected in clean subassembly 3 just right dust collection box 4, directly takes out dust collection box 4 just can clear up the dirty that falls, it is comparatively convenient, need not demolish filter screen 1 manual cleaning. Moreover, the cleaning component 3 is fixed all the time, the contact area between the cleaning component and the filter screen 1 is smaller, the size of the cleaning component 3 can be smaller, and the material cost, the mould cost, the injection molding cost and the processing cost are lower.

In some embodiments of the present utility model, referring to fig. 6, the air purifier further includes a middle spacer 73, an upper case 72, and a mesh cover 71. The screen 71 is enclosed to be established in the periphery of filter screen 1, is provided with the air intake on the screen 71, and the air current passes through the air intake and gets into air purifier's inside. The middle isolation frame 73 is arranged between the upper shell 72 and the filter screen 1, that is, the upper shell 72, the middle isolation frame 73 and the filter screen 1 are sequentially arranged from top to bottom, and the fan is arranged inside the upper shell 72. The drive assembly 2, sterilizer 6, etc. may be secured to the middle spacer 73, positioned adjacent the screen 1.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (9)

1. Automatic cleaning device of filter screen, its characterized in that: the dust collecting device comprises a filter screen, a driving assembly, a cleaning assembly and a dust collecting box, wherein the cleaning assembly is in contact with the filter screen to clean dirt on the surface of the filter screen, the driving assembly is used for driving the filter screen to rotate relative to the cleaning assembly, and the dust collecting box is arranged below the filter screen and is opposite to the cleaning assembly; the automatic filter screen cleaning device further comprises a base, wherein the dust collecting box is arranged in the base, and the dust collecting box and the base are integrally formed, or the dust collecting box is detachably connected with the base.

2. The automatic filter screen cleaning device of claim 1, wherein: the driving assembly comprises a motor and a driving gear driven by the motor, one end of the filter screen is provided with a driven gear, and the driving gear is meshed with the driven gear.

3. The automatic screen cleaning apparatus of claim 2, wherein: the driven gear is positioned at the top of the filter screen.

4. A screen auto-cleaning device as defined in claim 3, wherein: the filter screen comprises a filter body, an upper cover and a lower cover, wherein the upper cover and the lower cover are respectively fixed at two ends of the filter body, and the driven gear and the upper cover are integrally formed.

5. The automatic screen cleaning apparatus of claim 2, wherein: the contact position of the driving gear and the driven gear is positioned outside the filter screen, and the driven gear is an external gear; or the contact position of the driving gear and the driven gear is positioned in the filter screen, and the driven gear is an internal gear.

6. The automatic filter screen cleaning device of claim 1, wherein: the dust collecting box is detachably connected with the base, the base is provided with a sliding opening, and the dust collecting box is in sliding connection with the base, so that the dust collecting box can enter and exit from the sliding opening.

7. The automatic filter screen cleaning device of claim 1, wherein: the filter screen is rotationally connected with the base through a rotary supporting structure;

the rotary supporting structure is arranged on the filter screen or the base and comprises a ball assembly or friction ribs capable of rotating automatically; or, the rotation supporting structure comprises a sliding rail and a sliding groove, wherein the sliding rail is arranged on one of the filter screen and the base, and the sliding groove is arranged on the other of the filter screen and the base.

8. The automatic screen cleaning apparatus of any one of claims 1-7, wherein: the filter screen automatic cleaning device further comprises a sterilizer.

9. Air purifier, its characterized in that: comprising a screen auto-cleaning device according to any one of claims 1-8.