CN107289539B

CN107289539B - Air purifier

Info

Publication number: CN107289539B
Application number: CN201710642614.3A
Authority: CN
Inventors: 李晋; 高伟
Original assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2017-07-31
Filing date: 2017-07-31
Publication date: 2023-07-04
Anticipated expiration: 2037-07-31
Also published as: CN107289539A

Abstract

The invention discloses an air purifier, which comprises a shell, an air guide assembly, an air filter screen, a silk screen and a driving mechanism, wherein the air filter screen is cylindrical and arranged in the shell, the air filter screen is arranged close to an air inlet, the silk screen is cylindrical and arranged in the shell, the silk screen is positioned between the air inlet and the air filter screen, and the silk screen is sleeved outside the air filter screen; the driving mechanism is used for driving the silk screen to rotate around the axis of the silk screen. According to the technical scheme, the silk screen is arranged between the air inlet and the air filter screen, so that large-particle dust in air can be subjected to primary filtration, the air filter screen is prevented from being blocked, and the service life of the air filter screen is prolonged. Moreover, the silk screen can rotate around the axis of the silk screen under the action of the driving mechanism, so that dust accumulation on the silk screen can be reduced as much as possible, and the blocking effect of the silk screen on the dust is ensured.

Description

Air purifier

Technical Field

The invention relates to the technical field of household appliances, in particular to an air purifier.

Background

The air purifier is a product capable of adsorbing, decomposing or converting various air pollutants (generally including PM2.5, dust, pollen, peculiar smell, decoration pollution such as formaldehyde, bacteria, allergen and the like) and effectively improving the air cleanliness. With the aggravation of air pollution, air purifiers are increasingly used in daily life.

The existing air purifier generally adopts a structure that one end (such as a low end) is used for air inlet, the other end (such as a top end) is used for air outlet, a filter screen is arranged at the air inlet end, and paper, activated carbon or HEPA filter screens are generally used for filtering. Because the ability of a filter to adsorb contaminant molecules is limited and a disposable filter is typically used, a new filter needs to be replaced for a given lifetime, requiring manual operation, and increasing the cost of materials for the user. Among the pollutant components adsorbed by the filter screen, mainly PM1.0, PM2.5, PM10 and larger particle size particles such as dust, poplar flock and the like are adopted. According to measurement, 90% of the pollution components on the replaced waste filter screen are large-sized particles, and the large-sized particles are accumulated on the filter screen, so that the filter screen is easy to block, the purification effect is rapidly reduced, the cleaning treatment is difficult, and the secondary pollution is caused when the service time is too long. In addition, most of the filter screens of the existing air purifiers adopt centralized filter screen purification treatment, and individual filter screen structures of the air purifiers adopt layered purification structures, but the filter screens with the dust removal function are disposable filter screens, and are easy to block and cannot be cleaned.

Accordingly, there is a need to provide a new air cleaner to solve the above-mentioned technical problems.

Disclosure of Invention

The invention mainly aims to provide an air purifier, which aims to solve the problem that a filter screen is easy to block.

In order to achieve the above object, the present invention provides an air cleaner comprising:

the shell is provided with an air inlet and an air outlet;

the air guide assembly is used for guiding air entering the shell from the air inlet to the air outlet;

the air filter screen is cylindrical and arranged in the shell, and is arranged close to the air inlet;

the silk screen is cylindrical and arranged in the shell, is positioned between the air inlet and the air filter screen, and is sleeved outside the air filter screen; the method comprises the steps of,

and the driving mechanism is used for driving the silk screen to rotate around the axis of the silk screen.

Preferably, the wire mesh and the air filter mesh are both open at one end and have a bottom wall at the other end; a fixed ring is arranged on the side wall of the shell, and the opening end of the air filter screen is fixed on the fixed ring; the fixing ring is provided with a circular guide rail, and the opening end of the silk screen is inserted into the guide rail and can slide in the guide rail.

Preferably, a fixed grille is arranged on the side wall of the shell, and the fixed grille is arranged between the fixed ring and the air outlet; the driving mechanism comprises a silk screen motor, a gear assembly arranged on the fixed grid and a transmission shaft connected with the gear assembly and the bottom wall of the silk screen, wherein an output shaft of the silk screen motor is connected with the gear assembly, and the transmission shaft penetrates through the air filter screen.

Preferably, the silk screen comprises an outer net barrel and an inner net barrel which are coaxially sleeved;

the gear assembly comprises a main bevel gear connected with the output shaft, and a first auxiliary bevel gear and a second auxiliary bevel gear which are coaxially arranged, wherein the main bevel gear is arranged between the first auxiliary bevel gear and the second auxiliary bevel gear and can simultaneously drive the first auxiliary bevel gear and the second auxiliary bevel gear to rotate;

the transmission shaft comprises a shaft sleeve and a mandrel, wherein the shaft sleeve and the mandrel are arranged in a stacked mode, both ends of the mandrel extend out of the shaft sleeve, one end of the mandrel is connected with the first auxiliary bevel gear, the other end of the mandrel is connected with the bottom wall of the outer net barrel, one end of the shaft sleeve is connected with the second auxiliary bevel gear, and the other end of the shaft sleeve is connected with the bottom wall of the inner net barrel.

Preferably, the driving mechanism further comprises a sheath coaxially sleeved outside the shaft sleeve, and one end of the sheath is fixedly connected with the bottom wall of the air filter screen.

Preferably, the first and second sub bevel gears are rotated in opposite directions.

Preferably, an inner net fixing ring is arranged on the bottom wall of the inner net barrel, and the shaft sleeve is fixedly connected with the inner net fixing ring; an outer net fixing ring is arranged on the bottom wall of the outer net barrel, and the mandrel is fixedly connected with the outer net fixing ring.

Preferably, the air purifier further comprises a dust collection assembly arranged below the silk screen, the dust collection assembly comprises a dust collection bin, a dust collection fan used for sucking dust into the dust collection bin, and a dust collection filter screen used for separating the dust collection fan from the dust collection bin, and dust collection holes are formed in the side wall of the dust collection bin.

Preferably, the side wall of the dust collection bin near the dust collection hole is obliquely arranged, and forms a dust collection guide groove towards the dust collection Kong Jiansu together with the side wall of the shell.

Preferably, the wind guiding assembly is arranged in the shell, and the wind guiding assembly comprises a wind guiding motor and a wind guiding impeller driven by the wind guiding motor.

According to the technical scheme, the silk screen is arranged between the air inlet and the air filter screen, so that large-particle dust in air can be subjected to primary filtration, the air filter screen is prevented from being blocked, and the service life of the air filter screen is prolonged. Moreover, the silk screen can rotate around the axis of the silk screen under the action of the driving mechanism, so that dust accumulation on the silk screen can be reduced as much as possible, and the blocking effect of the silk screen on the dust is ensured. Moreover, the silk screen can be permanently and repeatedly used, and is easy to detach and clean, so that the use cost of a user can be greatly reduced.

Drawings

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

FIG. 1 is a schematic view of an air purifier according to an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a transmission schematic diagram of a driving mechanism according to an embodiment of the invention.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Moreover, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present invention.

The invention provides an air purifier, which aims to solve the problem that a filter screen is easy to block.

As shown in fig. 1, an air purifier according to an embodiment of the present invention includes a housing 10, an air guide assembly 20, an air filter 30, a wire mesh 40, and a driving mechanism 50. The casing 10 is provided with an air inlet 11 and an air outlet 12, and the air guiding assembly 20 is used for guiding air entering the casing 10 from the air inlet 11 to the air outlet 12. The air filter 30 is cylindrical and is disposed in the housing 10, and the air filter 30 is disposed near the air inlet 11. The wire mesh 40 is cylindrical and is disposed in the housing 10, the wire mesh 40 is disposed between the air inlet 11 and the air filter 30, the wire mesh 40 is sleeved outside the air filter 30, and the driving mechanism 50 is used for driving the wire mesh 40 to rotate around the axis of the wire mesh 40.

In the above embodiment, the screen 40 is disposed between the air inlet 11 and the air filter 30, so that the primary filtering of the pollutants such as large particle dust in the air can be performed to prevent the air filter 30 from being blocked, thereby prolonging the service life of the air filter 30. Moreover, the screen 40 can rotate around its own axis under the action of the driving mechanism 50, so that dust accumulation on the screen 40 can be reduced as much as possible, and the blocking effect of the screen 40 on dust can be ensured. Further, the wire mesh 40 can be used repeatedly and is easy to disassemble and clean, so that the use cost of the user can be greatly reduced.

The housing 10 may be a cylinder or a square cylinder. In the embodiment of the present invention, the casing 10 is preferably cylindrical, the air outlet 12 is formed on the top wall of the casing 10, the air inlet 11 is formed on the side wall of the casing 10 at a position corresponding to the wire mesh 40, that is, the air inlet 11 is arranged around the wire mesh 40 to realize 360 degrees of air inlet, and the air entering the casing 10 from the air inlet 11 will first contact with the wire mesh 40, and the wire mesh 40 blocks large particle dust in the air, so as to realize primary filtration. And, as shown in fig. 1, an air inlet grille is further provided at the air inlet 11 for preventing flying flocks and insects from entering the housing 10.

In a preferred embodiment, the screen 40 and the air screen 30 are each open at one end and have a bottom wall at the other end, the air screen 30 being capable of entering the interior of the screen 40 from the open end of the screen 40. The side wall of the housing 10 is provided with a fixing ring 60, and the open end of the air filter screen 30 is fixed to the fixing ring 60, and preferably to the inner edge of the fixing ring 60, while the outer edge of the fixing ring 60 is mounted to the side wall of the housing 10. The retaining ring 60 cooperates with the air screen 30 to divide the space within the housing 10 into two opposing chambers, with the air inlet 11 being located in one of the chambers (preferably the lower chamber) and the air outlet being located in the other chamber (preferably the upper chamber). The side of the fixing ring 60 near the air inlet 11 is provided with a circular guide 61, and the open end of the wire mesh 40 is inserted into the guide 61 and can slide in the guide 61. The rotation of the screen 40 is guided by the guide rails 61 to secure the stability of the rotation of the screen 40. In other embodiments, a plurality of balls may be disposed within the guide 61, and the wire mesh 40 may slide between adjacent balls, thereby reducing drag of the wire mesh 40 during rotation.

In the above embodiment, the driving of the screen 40 may be achieved in various manners, for example, the driving mechanism 50 is disposed outside the screen 40 and near the bottom wall of the screen 40 (i.e., below the screen 40 in fig. 1), and the driving mechanism may include a hydraulic motor that transmits a rotational torque to the bottom wall of the screen 40 to drive the screen 40 to rotate. Alternatively, in a preferred embodiment, as shown in fig. 1, a fixed grille 70 is disposed on a side wall of the housing 10, the fixed grille 70 is disposed between the fixed ring 60 and the air outlet 12, the driving mechanism 50 includes a wire mesh motor 51, a gear assembly 52 mounted on the fixed grille 70, and a transmission shaft 53 connecting the gear assembly 52 with a bottom wall of the wire mesh 40, an output shaft 54 of the wire mesh motor 51 is connected with the gear assembly 52, the wire mesh motor 51 may be mounted on a side surface of the fixed ring 60 near the air outlet 12, and the transmission shaft 53 passes through the air filter 30. By providing the fixed grill 70, the arrangement of the driving mechanism 50 can be optimized, the fixed grill 70 is circular to adapt to the shape of the side wall of the housing 10, the transmission shaft 53, the screen 40 and the housing 10 are coaxially arranged, the transmission shaft 53 penetrates the air screen 30 to be connected with the bottom wall of the screen 40, and the rotational moment can be transmitted to the screen 40 while supporting the screen 40, so as to drive the screen 40 to rotate stably around the axis.

Further, in order to enhance the blocking ability against large particle dust and reduce the contamination of the air screen 30 as much as possible during the air cleaning process, a double-layered screen is provided for filtering in the preferred embodiment, and specifically, as shown in fig. 1, the screen 40 includes an outer screen cylinder 42 and an inner screen cylinder 41 coaxially stacked. It should be noted that, in other embodiments, the wire mesh 40 may further include three or more layers of mesh cylinders to further enhance the dust removing effect of the wire mesh 40.

In order to drive the outer and inner

net drums

42, 41 simultaneously, referring to fig. 3, the gear assembly 52 includes a main bevel gear 523 connected to the output shaft 54, and first and second

sub bevel gears

521, 522 coaxially disposed, the main bevel gear 523 being disposed between the first and second sub bevel gears 521, 522 (wherein the axis of the main bevel gear 523 is perpendicular to the axis of the first sub bevel gear 521), and is capable of simultaneously driving the first and second

sub bevel gears

521, 522 to rotate. Accordingly, as shown in fig. 2, the transmission shaft 53 includes a sleeve 531 and a mandrel 532 which are arranged in a stacked manner, both ends of the mandrel 532 extend out from the sleeve 531, one end of the mandrel 532 is connected to the first auxiliary bevel gear 521 and the other end is connected to the bottom wall of the outer net drum 42, one end of the sleeve 531 is connected to the second auxiliary bevel gear 522, and the other end is connected to the bottom wall of the inner net drum 41.

The wire mesh motor 51 may be a brushless dc motor, which can perform stepless speed regulation, and the wire mesh motor 51 may rotate in a forward direction or in a reverse direction, or the wire mesh motor 51 may be an ac asynchronous motor with adjustable speed. The main bevel gear 523 is driven to rotate by the output shaft 54 of the screen motor 51, and the main bevel gear 523 drives the first auxiliary bevel gear 521 and the second auxiliary bevel gear 522 to rotate at the same time, so that the shaft sleeve 531 and the mandrel 532 are driven to rotate respectively, and finally the outer screen drum 42 and the inner screen drum 41 can also rotate at a certain speed, so that the aim of preventing large particle pollutants such as dust and reducing dust deposition on the outer screen drum 42 and the inner screen drum 41 is fulfilled.

The outer mesh tube 42 and the inner mesh tube 41 may be wire mesh, specifically stainless steel mesh or nickel alloy mesh, etc., and large particles such as dust having a particle diameter of PM1.0 or more, particularly PM10 or more, may be filtered out. The rotation speed of the outer net drum 42 and the inner net drum 41 ranges from 60rpm to 1500rpm, and the mesh number of the outer net drum 42 is lower than that of the inner net drum 41, specifically, the outer net drum 42 may be 10 mesh to 50 mesh, the inner net drum 41 may be 100 mesh to 400 mesh, and the interval between the outer net drum 42 and the inner net drum 41 may be 10mm to 50mm. The air filter 30 may be a HEPA filter (high efficiency air filter), a paper filter, an activated carbon filter, or the like, which can further purify air, and can be used to filter out harmful gases, thereby providing clean and harmless air to the user. The air filter 30 can filter contaminant molecules with small particle size and is less affected by the blockage of large particle size particles, which can greatly prolong the service life of the air filter 30, and particularly can be prolonged from 3-4 months to 1-3 years.

In addition, as shown in fig. 2, the driving mechanism 50 further includes a sheath 533 coaxially sleeved outside the sleeve 531, and one end of the sheath 533 is fixedly connected to the bottom wall of the air filter 30. In a specific implementation, the gear assembly 52 further includes a housing, through which the main bevel gear 523, the first auxiliary bevel gear 521 and the second auxiliary bevel gear 522 are wrapped, so as to prevent dust from entering the gear assembly 52, so as to ensure that the driving mechanism 50 can work normally. Because one end of the sheath 533 is fixedly connected with the bottom wall of the air filter 30, and the other end of the sheath 533 is fixedly connected with the housing of the gear assembly 52, the air filter 30 is stably supported, and the air filter 30 is prevented from swinging due to the influence of the rotation of the wire mesh 40. In a preferred embodiment, referring to fig. 2, an upper support ring 32 is provided on an inner surface of a bottom wall of the air screen 30, and a lower support ring 31 is provided on an outer surface of the bottom wall to enhance the connection strength between the air screen 30 and the sheath 533.

Further, in the preferred embodiment, the rotation directions of the first and second

sub bevel gears

521 and 522 are opposite, so that the rotation directions of the outer mesh drum 42 and the inner mesh drum 41 are opposite to disturb the flow direction of air, and the filtering effect on the large particle size particles is improved. The opposite rotation directions of the first and second

sub bevel gears

521 and 522 may be achieved by the first and second

sub bevel gears

521 and 522 having opposite rotation directions, and in particular, referring to fig. 3, the first and second

sub bevel gears

521 and 522 are maintained to be coaxial and have opposite small ends.

As shown in fig. 2, in order to stably rotate both the outer net drum 42 and the inner net drum 41, an inner net fixing ring 411 is provided on the bottom wall of the inner net drum 41, and a boss 531 is fixedly connected to the inner net fixing ring 411. A support base 412 is further provided on the mandrel for rotatably supporting the inner mesh fixing ring 411 and the sleeve 531. Correspondingly, the bottom wall of the outer net drum 42 is provided with an outer net fixing ring 412, and the mandrel 532 is fixedly connected with the outer net fixing ring 412. A movable grille 90 is arranged below the outer net drum 42, a limiting seat 91 is arranged in the middle of the movable grille 90, a groove is formed in the limiting seat 91, the lower end of the mandrel 532 well stretches into the groove of the limiting seat 91, but does not contact with the groove wall of the groove, and the groove of the limiting seat 91 can limit the possible swinging radian of the mandrel 532.

In addition, in a more preferred embodiment, as shown in fig. 1, the air cleaner further comprises a dust collecting assembly 80 disposed below the wire mesh 40, the dust collecting assembly 80 comprises a dust collecting bin 81, a dust suction fan 85 for sucking dust into the dust collecting bin 81, and a dust suction filter screen 84 for separating the dust suction fan 85 from the dust collecting bin 81, and dust suction holes 82 are formed on a sidewall of the dust collecting bin 81. Under the action of the dust suction fan 85, dust blocked by the screen 40 can be collected into the dust collection bin 81 through the dust suction holes 82, and the dust collection bin 81 can be detached and cleaned regularly, so that dust accumulation is prevented from affecting the purification effect of the air purifier. Wherein, be provided with dust absorption filter screen 84 between dust absorption fan 85 and the dust collection bin 81, can prevent the dust in the dust collection bin 81 from influencing the normal work of dust absorption fan 85.

In order to enhance the dust collecting effect, referring to fig. 2, the side wall of the dust bin 81 near the dust suction hole 82 is inclined, and forms a dust collecting guide groove 83 tapering toward the dust suction hole 82 together with the side wall of the housing 10, so that the dust can be guided to flow toward the dust suction hole 82. After the screen 40 blocks most of the dust from being filtered, the excessive dust is collected and falls into the dust collecting guide 83, and the dust collecting guide 83 is lower than the screen 40 and the bottom of the air inlet 11, so that the dust deposited on the bottom of the housing 10 can be prevented from being lifted, and the dust floating at the upper portion in the housing 10 can be reduced.

Further, as shown in fig. 1, the wind guiding assembly 20 is disposed in the housing 10, and the wind guiding assembly 20 includes a wind guiding motor 21 and a wind guiding impeller 22 driven by the wind guiding motor 21, wherein the wind guiding motor 21 is disposed at a side of the fixed grille 70 opposite to the gear assembly 52, and in particular, the wind guiding assembly 20 is disposed near the air outlet 12 to optimize the layout of the internal structure of the housing 10. In the normal air purifying process, the air guiding assembly 20 can guide the air entering the housing 10 from the air inlet 11 to the air outlet 12, so that the air is purified by the wire mesh 40 and the air filter 30 in the process of flowing in the housing 10, thereby achieving the purpose of providing clean air. When the silk screen 40 needs to be cleaned, the air guide impeller 22 can reversely blow air, and reversely blow dust on the silk screen 40, so as to achieve the purpose of automatic dust removal. The wind-guiding motor 21 can be a brushless direct current motor, can perform stepless speed regulation, and the wind-guiding motor 21 can rotate forward or reversely, or the wind-guiding motor 21 can also be an alternating current asynchronous motor with adjustable speed.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. An air purifier, the air purifier comprising:

the shell is provided with an air inlet and an air outlet, and an air inlet grille is arranged at the air inlet;

the silk screen is cylindrical and arranged in the shell, is positioned between the air inlet and the air filter screen, and is sleeved outside the air filter screen; and

a drive mechanism for driving the screen to rotate about an axis of the screen;

the driving mechanism comprises a silk screen motor, a gear assembly and a transmission shaft for connecting the gear assembly with the bottom wall of the silk screen, an output shaft of the silk screen motor is connected with the gear assembly, and the transmission shaft penetrates through the air filter screen;

the silk screen comprises an outer net barrel and an inner net barrel which are coaxially overlapped; the gear assembly comprises a main bevel gear connected with the output shaft, and a first auxiliary bevel gear and a second auxiliary bevel gear which are coaxially arranged, wherein the main bevel gear is arranged between the first auxiliary bevel gear and the second auxiliary bevel gear and can simultaneously drive the first auxiliary bevel gear and the second auxiliary bevel gear to rotate;

the transmission shaft comprises a shaft sleeve and a mandrel which are arranged in a sleeved mode, both ends of the mandrel extend out of the shaft sleeve, one end of the mandrel is connected with the first auxiliary bevel gear, the other end of the mandrel is connected with the bottom wall of the outer net barrel, one end of the shaft sleeve is connected with the second auxiliary bevel gear, and the other end of the shaft sleeve is connected with the bottom wall of the inner net barrel;

the first auxiliary bevel gear and the second auxiliary bevel gear are opposite in rotation direction.

2. The air purifier of claim 1 wherein the wire mesh and the air screen are each open at one end and have a bottom wall at the other end; a fixed ring is arranged on the side wall of the shell, and the opening end of the air filter screen is fixed on the fixed ring; the fixing ring is provided with a circular guide rail, and the opening end of the silk screen is inserted into the guide rail and can slide in the guide rail.

3. The air cleaner of claim 2, wherein a fixed grille is disposed on a side wall of the housing, the fixed grille being disposed between the fixed ring and the air outlet; the gear assembly is mounted to the stationary grid.

4. The air purifier of claim 1, wherein the driving mechanism further comprises a sheath coaxially sleeved outside the shaft sleeve, and one end of the sheath is fixedly connected with the bottom wall of the air filter screen.

5. The air purifier of claim 1, wherein an inner mesh fixing ring is arranged on the bottom wall of the inner mesh cylinder, and the shaft sleeve is fixedly connected with the inner mesh fixing ring; an outer net fixing ring is arranged on the bottom wall of the outer net barrel, and the mandrel is fixedly connected with the outer net fixing ring.

6. The air cleaner of any one of claims 1 to 5, further comprising a dust collection assembly disposed below the screen, the dust collection assembly comprising a dust collection bin, a dust suction fan for sucking dust into the dust collection bin, and a dust collection screen separating the dust suction fan from the dust collection bin, wherein dust collection holes are formed in a side wall of the dust collection bin.

7. The air cleaner of claim 6, wherein a sidewall of the dust collection bin adjacent to the dust collection hole is inclined, and forms a dust collection guide groove toward the dust collection Kong Jiansu together with a sidewall of the housing.

8. The air purifier of any one of claims 1-5, wherein the air guide assembly is disposed within the housing and the air guide assembly comprises an air guide motor and an air guide impeller driven by the air guide motor.