CN220453868U - Air purifier - Google Patents

Abstract

The utility model provides an air purifier, which belongs to the technical field of purifiers and comprises a main shell, a driving motor, an impeller, a filter cartridge and a scraping and brushing assembly, wherein the main shell is arranged on the main shell; an air outlet is formed in the top of the main shell, a dust collecting box is arranged at the bottom of the main shell, and an air inlet is formed in the circumferential surface of the main shell; wherein, the dust collecting box has the lower extreme of shutoff cartridge filter and collects the dual function of dust. The driving motor, the impeller and the filter cartridge are arranged in the main shell from top to bottom; the impeller is assembled on an extension shaft of the driving motor, the filter cartridge is connected with the extension shaft of the driving motor through the clutch, and the air inlet is positioned on the side surface of the filter cartridge; the dust collecting box is covered at the lower end of the filter cartridge, an upper cover is arranged between the filter cartridge and the impeller, and an air outlet is arranged on the upper cover; the scraping brush component is arranged in the main shell, and the cleaning brush of the scraping brush component is abutted against the circumferential surface of the filter cylinder. The self-cleaning device can realize self-cleaning of the filter cartridge, and simultaneously adopts one motor for air purification and self-cleaning, thereby reducing the cost.

Description

Air purifier

Technical Field

The utility model belongs to the technical field of purifiers, and particularly relates to an air purifier.

Background

The air purifier is also called as an air cleaner, an air freshener and a purifier, and is a product capable of adsorbing, decomposing or converting various air pollutants and effectively improving the air cleanliness. When the empty clean product in the prior art is used in Liu Yangxu seasons, rooms with larger dust (such as buildings beside roads) or pet households, the filter cylinder needs to be cleaned manually frequently, and if the filter cylinder is not cleaned timely, the filigree-shaped object can block the filter cylinder, so that the air inlet quantity of the purifier is reduced, the efficacy is greatly reduced, and the normal air cleaning use is influenced; meanwhile, the existing air self-cleaning purifier purifies and self-cleaning filter core adopts different motors to control, and the problems of high cost, resource waste, unreliable multiple elements and complex assembly are also caused.

Disclosure of Invention

The embodiment of the utility model provides an air purifier, which aims to solve the problems that the prior air purifier has the defects that the filter cylinder is blocked by foreign matters due to untimely cleaning, the air purifying effect is influenced, and the cost is high and the resource is wasted due to the adoption of a plurality of motors for control.

In order to achieve the above purpose, the utility model adopts the following technical scheme: provided is an air cleaner including: the device comprises a main shell, a driving motor, an impeller, a filter cartridge and a scraping brush assembly;

an air outlet is formed in the top of the main shell, a dust collecting box is arranged at the bottom of the main shell, and an air inlet is formed in the circumferential surface of the main shell;

the driving motor, the impeller and the filter cartridge are arranged in the main shell from top to bottom; the impeller is assembled on an extension shaft of the driving motor, the filter cartridge is connected with the extension shaft of the driving motor through a clutch, and the air inlet is positioned on the side surface of the filter cartridge; the dust collecting box is covered at the lower end of the filter cylinder;

the scraping brush component is arranged in the main shell, and the cleaning brush of the scraping brush component is propped against the circumferential surface of the filter cylinder.

In one implementation mode, the scraping brush assembly comprises an upper fixing ring, a lower fixing ring and the cleaning brush, wherein the cleaning brush is spiral, and the upper end and the lower end of the cleaning brush are respectively fixedly arranged on the upper fixing ring and the lower fixing ring; the upper fixing ring is propped against an upper sealing cover arranged between the filter cartridge and the impeller, and the lower fixing ring is propped against the dust collecting box.

In one implementation, the device further comprises a reduction gear assembly arranged between the filter cartridge and the clutch, the reduction gear assembly comprises a driving gear, a transition gear and an inner gear ring which are sequentially meshed, the driving gear is connected with the clutch, the inner gear ring is connected with the filter cartridge, and the transition gear is rotationally connected to the upper sealing cover.

In one implementation manner, a supporting framework is arranged in the main shell, the supporting framework comprises an upper supporting ring, a lower supporting ring and a supporting rod, and the supporting rod is axially connected between the upper supporting ring and the lower supporting ring along the main shell; the driving motor is fixedly arranged on the upper supporting ring; the dust collection box is detachably connected with the lower support ring; the main shell is detachably connected with the supporting framework.

In one implementation mode, at least two clamping blocks are uniformly arranged on the outer circumferential surface of the dust collecting box, a spiral groove which is in spiral clamping connection with the clamping blocks is arranged on the inner circumferential surface of the lower supporting ring, and the dust collecting box is detachably connected to the lower supporting ring through the spiral connection of the clamping blocks and the spiral groove.

In one implementation mode, the anti-falling strip is further arranged on the outer circumferential surface of the dust collecting box and below the clamping block, the anti-falling strip extends along the axis of the main shell, and the anti-falling groove matched with the anti-falling strip is further arranged on the inner circumferential surface of the lower supporting ring.

In one implementation mode, the main shell comprises an upper cylinder body and a lower cylinder body which is detachably connected with the upper cylinder body, the driving motor and the impeller are positioned in the upper cylinder body, a first support seat is arranged in the upper cylinder body, a support column which is axially abutted to the first support seat is arranged on the upper support ring, and the upper cylinder body is detachably connected with the support framework through bolts which penetrate through the first support seat and the support column; the filter cartridge and the wiper assembly are located in the lower cylinder.

In one implementation mode, the lower end of the upper cylinder body is also provided with a clamping tongue, and the upper sealing cover is provided with a clamping hole which is clamped with the clamping tongue.

In one implementation mode, the lower end of the upper cylinder is provided with a second support, the upper sealing cover is provided with an upper connecting column which is in butt joint with the second support, and the upper cylinder is detachably connected to the upper sealing cover through bolts penetrating through the second support and the upper connecting column; the upper end of the lower cylinder body is provided with a third support, the upper sealing cover is provided with a lower connecting column connected with the third support, and the lower cylinder body is detachably connected to the upper sealing cover through bolts penetrating through the third support and the lower connecting column.

In one implementation mode, the lower end of the lower cylinder body is provided with a mounting column, the outer ring surface of the lower support ring is provided with a support step, and the support step is provided with a small hole concentric with the mounting column.

Compared with the prior art, the air purifier provided by the utility model has the beneficial effects that: the impeller and the filter cartridge for cleaning air are arranged in the main shell simultaneously, and the scraping brush assembly for self-cleaning the filter cartridge is arranged in the main shell, meanwhile, the impeller and the filter cartridge are driven by a driving motor, the filter cartridge is separated from the driving motor through a clutch, the scraping brush assembly is a static piece, and when the filter cartridge rotates, the scraping brush assembly is static, so that dust on the circumferential surface of the filter cartridge can be cleaned.

When the air purifier is used for purifying air, the clutch separates the filter cylinder from the extension shaft of the driving motor, the filter cylinder does not rotate, the driving motor only drives the impeller to rotate, the driving motor generally operates at a rotating speed of hundreds or thousands of revolutions per minute, raw air enters from the air inlet of the main shell and is filtered by the filter cylinder, dirty objects are filtered on the outer circumferential surface of the filter cylinder, the filtered air passes through the impeller, and clean air is discharged from the air outlet at the top of the main shell; when the self-cleaning filter cartridge is needed, the clutch connects the filter cartridge with the extension shaft of the driving motor, the driving motor enters a low-speed large-torque reverse direct-drive mode and runs at a rotating speed of 0-200 revolutions per minute, the driving motor reversely rotates to drive the filter cartridge to rotate, the cleaning brush of the scraping brush assembly is fixed, the filter cartridge rotates relative to the scraping brush assembly, the flock or dust covered on the surface of the filter cartridge is scraped and falls into the dust collecting box below, the dust collecting box can accumulate a large amount of flocks or dust which are cleaned and brushed for a long time, and after a certain amount of dust is accumulated, the flock or dust in the dust collecting box is removed.

The air purifier that this embodiment provided can realize scraping the brush subassembly and to the self-cleaning on cartridge filter surface through taking program control driving motor's rotation, need not frequent manual the washing of user, promotes that the dust is great, pet dander, fly to batting scene user experience. The self-cleaning of the filter cartridge ensures that the air quantity in each scene application is almost unchanged, thereby greatly improving the hollow and clean efficacy of the actual scene and providing real long-term efficient purification for users. And through creatively making cartridge filter and impeller share a driving motor, need not additionally set up special clean motor and control, the extension control circuit part, make whole clarifier greener low carbon, practice thrift, low cost to and the clarifier structure simpler equipment is more convenient, improves the production efficiency of product.

Drawings

Fig. 1 is a schematic perspective view (top view) of an air purifier according to an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a second (bottom view) of the air purifier according to the embodiment of the present utility model;

FIG. 3 is a schematic diagram of an exploded structure of an air purifier according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of an air purifier according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing a structure of an air purifier with a main casing removed according to an embodiment of the present utility model;

FIG. 6 is a schematic view of the air purifier provided in FIG. 5 with the filter cartridge removed;

FIG. 7 is a schematic view of the air purifier provided in FIG. 5 with the impeller removed;

FIG. 8 is an exploded view of the air purifier provided in FIG. 7 with the impeller removed;

FIG. 9 is a schematic bottom view of the air purifier provided in FIG. 5 with the impeller and filter cartridge removed;

FIG. 10 is a schematic top view of the air purifier provided in FIG. 5 with the impeller and filter cartridge removed;

FIG. 11 is a schematic view of a wiper assembly according to an embodiment of the present utility model;

fig. 12 is a schematic structural view of a dust box according to an embodiment of the present utility model;

FIG. 13 is a schematic view of a grid frame according to an embodiment of the present utility model;

fig. 14 is a schematic structural view (top view) of an upper cylinder according to an embodiment of the present utility model;

fig. 15 is a schematic structural view (bottom view) of an upper cylinder according to an embodiment of the present utility model;

fig. 16 is a schematic structural view (top view) of a lower cylinder according to an embodiment of the present utility model;

fig. 17 is a schematic structural view (bottom view) of a lower cylinder according to an embodiment of the present utility model;

fig. 18 is a schematic structural view (top view) of an upper cover according to an embodiment of the present utility model;

fig. 19 is a schematic structural view (bottom view) of an upper cover according to an embodiment of the present utility model;

FIG. 20 is a schematic view of the structure of the upper support ring according to the embodiment of the present utility model (bottom view);

FIG. 21 is a schematic view of a lower support ring according to an embodiment of the present utility model (bottom view);

fig. 22 is a schematic diagram of a split structure of a lower cylinder according to an embodiment of the present utility model;

fig. 23 is a schematic perspective view of a lower cylinder according to an embodiment of the present utility model;

fig. 24 is a schematic diagram of a three-dimensional structure of a lower cylinder according to an embodiment of the present utility model;

fig. 25 is a schematic perspective view (bottom view) of a lower cylinder according to an embodiment of the present utility model;

reference numerals illustrate:

1. a driving motor; 2. a clutch; 3. a transmission rotating shaft; 4. a grid frame; 41. a spline housing; 5. a filter cartridge; 6. a wiper assembly; 61. an upper fixing ring; 62. a cleaning brush; 63. a lower fixing ring; 7. a dust collection box; 71. a clamping block; 72. an anti-falling bar; 73. an upper baffle ring; 8. a main housing; 81. an upper cylinder; 811. a first support; 812. a second support; 813. a clamping tongue; 82. a lower cylinder; 821. a third support; 822. a mounting column; 9. an air outlet; 10. an upper cover; 101. an upper connecting column; 102. a lower connecting column; 103. a clamping hole; 104. a shaft sleeve; 11. an impeller; 12. a support skeleton; 121. an upper support ring; 1211. a support column; 122. a support rod; 123. a lower support ring; 1231. a spiral groove; 1232. an anti-drop groove; 1233. a support step; 13. a reduction gear assembly; 131. a transition gear; 132. an inner gear ring; 133. a drive gear; 134. a shaft pin.

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.

Referring to fig. 1 to 21, an air purifier provided by the present utility model will now be described. The air purifier comprises a main shell 8, a driving motor 1, an impeller 11, a filter cartridge 5 and a scraping brush assembly 6;

as shown in fig. 1 to 4, an air outlet 9 is formed in the top of the main casing 8, a dust collecting box 7 is arranged at the bottom of the main casing 8, and an air inlet is formed in the circumferential surface of the main casing 8; the dust collecting box 7 has the dual functions of blocking the lower end of the filter cartridge 5 and collecting dust.

As shown in fig. 3 to 8, the driving motor 1, the impeller 11 and the filter cartridge 5 are disposed in the main housing 8 from top to bottom; the impeller 11 is assembled on an extension shaft of the driving motor 1, the filter cartridge 5 is connected with the extension shaft of the driving motor 1 through the clutch 2, and the air inlet is positioned on the side surface of the filter cartridge 5; the dust collection box 7 is sealed at the lower end of the filter cartridge 5;

the wiper assembly 6 is disposed in the main housing 8 with its cleaning brush 62 abutting against the circumferential surface of the filter cartridge 5, as shown in fig. 3, 5, and 7.

Compared with the prior art, the air purifier provided by the utility model has the beneficial effects that: simultaneously, an impeller 11 and a filter cartridge 5 for cleaning air and a scraping brush assembly 6 for self-cleaning the filter cartridge 5 are arranged in a main shell 8, meanwhile, the impeller 11 and the filter cartridge 5 are driven by a driving motor 1, the filter cartridge 5 is separated from the driving motor 1 through a clutch 2, the scraping brush assembly 6 is a static piece, and when the filter cartridge 5 rotates, the scraping brush assembly 6 is static, so that dust on the circumferential surface of the filter cartridge 5 can be cleaned.

In the air purifier, when air is purified, the clutch 2 separates the filter cartridge 5 from the extension shaft of the driving motor 1, the filter cartridge 5 does not need to rotate, the driving motor 1 only drives the impeller 11 to rotate, the driving motor 1 generally operates at a rotating speed of hundreds or thousands of revolutions per minute, unpurified air enters from the air inlet of the main shell 8 and is filtered by the filter cartridge 5, dirty objects are filtered on the outer circumferential surface of the filter cartridge 5, the filtered air passes through the impeller 11, and clean air is discharged from the air outlet 9 at the top of the main shell 8.

When the self-cleaning filter cartridge 5 is needed, the clutch 2 connects the filter cartridge 5 with the extension shaft of the driving motor 1, the driving motor 1 enters a low-speed large-torque reverse direct-driving mode and operates at a rotating speed of 0-200 revolutions per minute, the driving motor 1 reversely rotates to drive the filter cartridge 5 to rotate, the cleaning brush 62 of the scraping brush assembly 6 is fixed, the filter cartridge 5 rotates relatively to the scraping brush assembly 6, and the flock or dust coated on the surface of the filter cartridge 5 is scraped and falls into the dust collecting box 7 below, the dust collecting box 7 can accumulate a large amount of flock or dust which is removed by the cleaning brush 62 for a long time, and after a certain amount is accumulated, the flock or dust in the dust collecting box 7 is removed.

The air purifier that this embodiment provided can realize scraping brush assembly 6 to the self-cleaning of cartridge filter 5 surface through taking the rotation of program control driving motor 1, need not frequent manual the washing of user, promotes that the dust is great, pet hair bits, fly wadding scene user experience. The self-cleaning of the filter cartridge 5 ensures that the air quantity in each scene application is almost unchanged, thereby greatly improving the hollow net effect in the actual scene and providing real long-term efficient purification for users. And through creatively making cartridge filter 5 and impeller 11 share a driving motor 1, need not additionally set up special clean motor and control and extend the outer control circuit part, make whole clarifier greener low-carbon, practice thrift, low cost to and the simpler equipment of clarifier structure is more convenient, improves the production efficiency of product.

Alternatively, the clutch 2 can select any one of an overrunning clutch, a one-way check bearing or an electromagnetic clutch for the clutch of the filter cartridge 5 and the driving motor 1; the rotation speed of the filter cartridge 5 can be reduced by matching a speed reducer on the extension shaft of the driving motor 1, so that the filter cartridge 5 can rotate at a low speed to facilitate the cleaning of the scraping brush assembly 6. Wherein, the upper end of cartridge filter 5 is provided with grid frame 4, and wherein, grid frame 4's center is provided with spline housing and with spline housing complex transmission pivot 3, clutch 2 sets up between transmission pivot 3 and driving motor 1's extension axle.

For example, when the clutch 2 is a one-way check bearing, the driving motor 1 generally operates at a rotational speed of 100 to 5000 rpm during normal air purification operation, and at this time, the one-way check bearing is in a clutch state and does not drive the filter cartridge 5 to rotate, the driving motor 1 drives the impeller 11 to rotate, dirty objects are filtered on the outer circumferential surface of the filter cartridge 5, the filtered air passes through the impeller 11 and the fan assembly, and clean air is discharged from the top air outlet 9.

When the air is purified, the main shaft of the driving motor rotates relative to the clutch 2, noise is generated, and the noise is reduced by sticking mute cotton on the shaft sleeve 104 protruding on the impeller 11 and the upper cover 10, as shown in fig. 10.

When the air purifier is shut down each time, or the sensor detects that the filter cartridge 5 needs to be cleaned, or the microprocessor algorithm detects that the filter cartridge 5 needs to be cleaned, the self-cleaning mode is entered; the microprocessor recognizes the state, stops the purification mode, the driving motor 1 enters the low-speed large-torque direct-driving mode and runs at the rotating speed of 0-200 revolutions per minute, when the driving motor 1 rotates reversely, the unidirectional non-return bearing is in a transmission state to drive the filter cartridge 5 connected with the unidirectional non-return bearing to rotate, the cleaning brush 62 is fixed, the filter cartridge 5 rotates relative to the scraping brush assembly 6, the flock or dust cleaning brush 62 coated on the surface of the filter cartridge 5 falls into the dust collecting box 7, the dust collecting box 7 can accumulate a large amount of flock or dust, and the flock or dust in the dust collecting box can be removed after the dust collecting box 7 is taken down.

When the clutch 2 selects an overrunning clutch or an electromagnetic clutch, the working state is the same as that of adopting a one-way non-return bearing, and the description is omitted.

It should be noted that, the azimuth limitation in the present application is based on the placement mode of the purifier during normal operation, and a sensor and a microprocessor are further provided for cooperation with the operation of the clutch 2, and the processor is electrically connected with the driving motor 1 and is used for controlling and switching the working state of the driving motor 1.

In some embodiments, as shown in fig. 3 to 11, the scraping brush assembly 6 includes an upper fixing ring 61, a lower fixing ring 63, and a cleaning brush 62, the cleaning brush 62 is spiral, and upper and lower ends of the cleaning brush 62 are respectively fixed on the upper fixing ring 61 and the lower fixing ring 63; the upper fixing ring 61 abuts against the upper cover 10 provided between the filter cartridge 5 and the impeller 11, and the lower fixing ring 63 abuts against the dust box 7. The cleaning brush 62 adopts a spiral shape, the length of the cleaning brush 62 is greatly increased on the same axial length of the filter cartridge 5, the filter cartridge 5 rotates for one circle, and the sweeping length of the cleaning brush 62 is long, so that the cleaning efficiency is greatly improved.

Preferably, the wiper assembly 6 includes three circumferentially spaced cleaning brushes 62.

The upper cover 10 in this embodiment substantially divides the main housing 8 into an upper cavity and a lower cavity, and prevents air entering the lower cavity from being directly discharged from the air outlet 9 without being purified by the filter cartridge 5; air filtered by the filter cartridge 5 is collected in the central cavity of the filter cartridge 5 and enters the upper cavity through an air outlet on the upper sealing cover 10 opposite to the central cavity.

The air purifier provided in this embodiment, as shown in fig. 22 to 25, further includes a reduction gear assembly 13 disposed between the filter cartridge 5 and the clutch 2, where the reduction gear assembly 13 includes a driving gear 133, a transition gear 131 and an inner gear ring 132 that are sequentially meshed, the driving gear 133 is connected to the clutch 2, the inner gear ring 132 is connected to the filter cartridge 5, and the transition gear 131 is rotatably connected to the upper cover 10 through a shaft pin 134. Through set up gear reduction assembly 13 between cartridge filter 5 and driving motor 1, gear reduction assembly 13 can reduce the higher rotational speed when driving motor 1 reverses, can effectively reduce the rotation speed of cartridge filter, increases stability, prevents that driving motor 1 from reversing the too fast rotation of cartridge filter when cleaning, causes rotatory unstable, problem that cleaning efficiency is poor.

The working principle after the reduction gear assembly is added is as follows: when the drive motor 1 rotates forward, the drive gear 133 is in a stationary state; when the driving motor 1 rotates reversely, the clutch 2 drives the driving gear 133 to rotate, the driving gear 133 drives the transition gear 131 to rotate, and the transition gear 131 drives the inner gear ring 132 in the filter cartridge 5 to rotate, so that the whole filter cartridge 5 is driven to rotate, and the cleaning of the filter element in the filter cartridge 5 is realized.

As another driving mode, optionally, as shown in fig. 8, a grid frame 4 for purifying air to pass through is arranged at the upper end of the filter cartridge 5, a spline housing 41 is arranged in the middle of the grid frame 4, a spline shaft at the lower end of the transmission rotating shaft 3 is matched with the spline housing on the grid frame 4, and the drive motor 1 drives the filter cartridge 5 to rotate.

In some embodiments, as shown in fig. 3 to 10, a supporting framework 12 is disposed in the main casing 8, the supporting framework 12 includes an upper supporting ring 121, a lower supporting ring 123, and a supporting rod 122, and the supporting rod 122 is axially connected between the upper supporting ring 121 and the lower supporting ring 123 along the main casing 8; the driving motor 1 is fixedly arranged on the upper supporting ring 121; the dust box 7 is detachably connected with the lower supporting ring 123; the main housing 8 is detachably connected with the supporting framework 12. The support frame 12 in the main housing 8 provides mounting support for the drive motor 1 and provides mounting support for the main housing 8, interconnecting the components.

In order to facilitate cleaning of the dust in the dust collecting box 7, the dust collecting box 7 needs to be designed into a convenient-to-detach mode, in this embodiment, the dust collecting box 7 can be assembled on the supporting framework 12 by slightly rotating, and can be easily detached, and the specific structure is as follows: at least two clamping blocks 71 (as shown in fig. 12) are uniformly arranged on the outer circumferential surface of the dust collection box 7, a spiral groove 1231 (as shown in fig. 21) which is in spiral clamping connection with the clamping blocks 71 is arranged on the inner circumferential surface of the lower supporting ring 123, and the dust collection box 7 is detachably connected to the lower supporting ring 123 through the spiral connection between the clamping blocks 71 and the spiral groove 1231.

In some embodiments, as shown in fig. 12 and 21, an upper baffle ring 73 is further disposed on the outer circumferential surface of the dust box 7, and an upper step ring abutting against the upper end surface of the upper baffle ring 73 is further disposed on the inner circumferential surface of the lower support ring 123. The abutting and matching of the upper step ring and the upper baffle ring 73 plays a limiting role on the installation position of the dust box 7 in the axial direction.

In some embodiments, as shown in fig. 12 and 21, an anti-falling bar 72 is further provided on the outer circumferential surface of the dust box 7 and below the clamping block 71, the anti-falling bar 72 extends along the axis of the main housing 8, and an anti-falling groove 1232 adapted to the anti-falling bar 72 is further provided on the inner circumferential surface of the lower support ring 123. When the dust box 7 rotates, the clamping block 71 enters the spiral groove 1231 until the circumferential side surface of the spiral groove 1231 is propped up, the anti-falling bar 72 is clamped into the anti-falling groove 1232, the situation that the dust box 7 is separated from the spiral groove 1231 in the circumference Xiang Fanzhuai can be avoided, and the anti-falling groove 1232 and the anti-falling bar 72 are matched, so that the dust box 7 has the functions of circumferential limiting, anti-falling and anti-falling.

In this embodiment, the upper cover 10 has a separating effect on the main housing 8, and for easy disassembly and assembly, the main housing 8 of this embodiment is split and is detachably connected with the upper cover 10, as shown in fig. 1 to 10 and fig. 14 to 20, and specific embodiments are as follows: the main shell 8 comprises an upper cylinder 81 and a lower cylinder 82 which is detachably connected with the upper cylinder 81, the driving motor 1 and the impeller 11 are positioned in the upper cylinder 81, a first support 811 is arranged in the upper cylinder 81, a support column 1211 which is axially abutted with the first support 811 is arranged on the upper support ring 121, and the upper cylinder 81 is detachably connected with the support skeleton 12 through bolts which penetrate through the first support 811 and the support column 1211; the filter cartridge 5 and the wiper assembly 6 are located within the lower cylinder 82.

Wherein, the lower end of the upper cylinder 81 is detachably connected to the upper end surface of the upper sealing cover 10; the upper end of the lower cylinder 82 is detachably connected to the lower end surface of the upper cap 10.

Alternatively, two to four first abutments 811 are uniformly provided in the upper cylinder 81, ensuring the stability of the axial support of the upper cylinder 81.

In this embodiment, the main casing 8, the driving motor 1 and the scraping brush assembly 6 are stationary members, the supporting frame 12 is used as a supporting member of the main body, an installation support is provided for the driving motor 1, the upper cylinder 81 is connected with the supporting frame 12 and the upper sealing cover 10, and the upper cylinder 81 is of an airtight structure, so that purified air is discharged from the top air outlet 9; the filter cartridge 5 is limited between the upper sealing cover 10 and the dust collecting box 7 and has a rotating space; the lower cylinder 82 is connected with the upper sealing cover 10, the scraping brush assembly 6 in the lower cylinder 82 can be limited in the lower cylinder 82 through the limit of the dust collecting box 7, after the dust collecting box 7 is opened, the filter cartridge 5 and the scraping brush assembly 6 can be taken out, and the cleaning brush 62 and the filter cartridge 5 can be conveniently cleaned and replaced.

In some embodiments, as shown in fig. 14 to 15 and fig. 18 to 19, a latch 813 is further provided at the lower end of the upper cylinder 81, and a latch hole 103 that is engaged with the latch 813 is provided on the upper cover 10. The latch 813 of the upper cylinder 81 is inserted into the latch hole 103 of the upper cover 10, and has a circumferential limit function for the upper cylinder 81. Two clamping tongues 813 are symmetrically arranged in the embodiment.

In some embodiments, as shown in fig. 14 to 20, the lower end of the upper cylinder 81 is provided with a second support 812, the upper cap 10 is provided with an upper connection post 101 abutting against the second support 812, and the upper cylinder 81 is detachably connected to the upper cap 10 by bolts penetrating the second support 812 and the upper connection post 101; the upper end of the lower cylinder 82 is provided with a third support 821, the upper cover 10 is provided with a lower connecting column 102 connected with the third support 821, and the lower cylinder 82 is detachably connected to the upper cover 10 by bolts penetrating the third support 821 and the lower connecting column 102. The upper cylinder 81 and the lower cylinder 82 are detachably connected with the upper cover 10, and the purifier is assembled and disassembled.

In order to prevent the lower cylinder 82 from rotating circumferentially, as shown in fig. 16 to 17 and 21, preferably, a mounting post 822 is provided at the lower end of the lower cylinder 82, the mounting posts 822 extend in the axial direction, and the number is 1-4, wherein a support step 1233 is provided at the outer side of the upper step ring of the lower support ring 123, the lower end of the lower cylinder 82 abuts against the support step 1233, small holes are provided on the support step 1233, and screws are screwed with the mounting posts 822 of the lower cylinder 82 through the small holes.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

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 (10)

1. An air purifier, comprising: a main shell (8), a driving motor (1), an impeller (11), a filter cartridge (5) and a scraping and brushing assembly (6);

an air outlet (9) is formed in the top of the main shell (8), a dust collection box (7) is arranged at the bottom of the main shell (8), and an air inlet is formed in the main shell (8);

the driving motor (1), the impeller (11) and the filter cartridge (5) are arranged in the main shell (8) from top to bottom; the impeller (11) is assembled on an extension shaft of the driving motor (1), the filter cartridge (5) is connected with the extension shaft of the driving motor (1) through the clutch (2), and the air inlet is positioned on the side surface of the filter cartridge (5); the dust collection box (7) is covered at the lower end of the filter cartridge (5);

the scraping brush assembly (6) is arranged in the main shell (8), and a cleaning brush (62) of the scraping brush assembly is abutted against the circumferential surface of the filter cartridge (5).

2. The air purifier as claimed in claim 1, wherein the wiper assembly (6) comprises an upper fixing ring (61), a lower fixing ring (63) and the cleaning brush (62), the cleaning brush (62) is spiral, and upper and lower ends of the cleaning brush (62) are respectively fixed on the upper fixing ring (61) and the lower fixing ring (63); the upper fixing ring (61) is propped against an upper sealing cover (10) arranged between the filter cartridge (5) and the impeller (11), and the lower fixing ring (63) is propped against the dust collecting box (7).

3. The air purifier as recited in claim 2, further comprising a reduction gear assembly disposed between the filter cartridge (5) and the clutch (2), the reduction gear assembly comprising a driving gear, a transition gear and an inner gear ring engaged in sequence, the driving gear being connected with the clutch (2), the inner gear ring being connected with the filter cartridge (5), the transition gear being rotatably connected to the upper cover (10).

4. The air cleaner of claim 2, wherein a support skeleton (12) is disposed in the main housing (8), the support skeleton (12) including an upper support ring (121), a lower support ring (123), and a support rod (122), the support rod (122) being axially connected between the upper support ring (121) and the lower support ring (123) along the main housing (8); the driving motor (1) is fixedly arranged on the upper supporting ring (121); the dust collection box (7) is detachably connected with the lower supporting ring (123); the main shell (8) is detachably connected with the supporting framework (12).

5. The air purifier as recited in claim 4, wherein at least two clamping blocks (71) are uniformly arranged on the outer circumferential surface of the dust collection box (7), a spiral groove (1231) which is in spiral clamping connection with the clamping blocks (71) is arranged on the inner circumferential surface of the lower support ring (123), and the dust collection box (7) is detachably connected to the lower support ring (123) through the spiral connection of the clamping blocks (71) and the spiral groove (1231).

6. The air purifier according to claim 5, characterized in that an anti-drop strip (72) is further arranged on the outer circumferential surface of the dust collecting box (7) and below the clamping block (71), the anti-drop strip (72) extends along the axis of the main shell (8), and an anti-drop groove (1232) which is adapted to the anti-drop strip (72) is further arranged on the inner circumferential surface of the lower support ring (123).

7. The air purifier as recited in claim 4, wherein the main housing (8) comprises an upper cylinder (81) and a lower cylinder (82) detachably connected with the upper cylinder (81), the driving motor (1) and the impeller (11) are located in the upper cylinder (81), a first support (811) is arranged in the upper cylinder (81), a support column (1211) axially abutted with the first support (811) is arranged on the upper support ring (121), and the upper cylinder (81) is detachably connected with the support skeleton (12) through bolts penetrating through the first support (811) and the support column (1211).

8. The air purifier as recited in claim 7, wherein a latch (813) is further provided at a lower end of the upper cylinder (81), and a latch hole (103) that is engaged with the latch (813) is provided in the upper cover (10).

9. The air cleaner according to claim 7, wherein a second support (812) is provided at a lower end of the upper cylinder (81), an upper connection post (101) abutting against the second support (812) is provided on the upper cover (10), and the upper cylinder (81) is detachably connected to the upper cover (10) by a bolt penetrating the second support (812) and the upper connection post (101); the upper end of the lower cylinder body (82) is provided with a third support (821), the upper sealing cover (10) is provided with a lower connecting column (102) connected with the third support (821), and the lower cylinder body (82) is detachably connected to the upper sealing cover (10) through bolts penetrating through the third support (821) and the lower connecting column (102).

10. The air cleaner of claim 7, wherein a mounting post (822) is provided at a lower end of the lower cylinder (82), a support step (1233) is provided on an outer circumferential surface of the lower support ring (123), and a small hole concentric with the mounting post (822) is provided on the support step (1233).