CN220453893U - Air purifier - Google Patents

Abstract

The utility model provides an air purifier which comprises a shell, a filtering structure and a wind wheel, wherein the filtering structure and the wind wheel are arranged in the shell, air inlets are formed in two opposite sides of the shell, the air purifier is provided with a central shaft, a circumferential angle corresponding to the central shaft serving as an axis of the air inlet is used as an air inlet angle, the air inlet angle is an acute angle, and the wind wheel is formed by ultrasonic welding. According to the air purifier provided by the utility model, the air inlet angle corresponding to the air inlet is an acute angle, so that the occupied position of the air inlet is relatively smaller, and the influence on the external and internal structural layout of the air purifier is smaller. Meanwhile, when the air inlet angle is smaller, the problems of reduced air purification efficiency, increased noise and the like are caused, and the wind wheel is formed by ultrasonic welding, so that the structure of the wind wheel is more integrated, the problems of reduced air purification efficiency, increased noise and the like are overcome, and the better performance of the air purifier is ensured.

Description

Air purifier

Technical Field

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

Background

Under the influence of multiple factors of environmental pollution and indoor decoration pollution, the quality of indoor air is difficult to guarantee. Especially for people with respiratory tract basic diseases or infants, the indoor air quality is important. The air purifier can carry out circulating filtration on indoor air, and improves the air quality to a certain extent.

In order to ensure the air intake quantity of the current air purifier, the internal wind resistance of the current air purifier is reduced, and the air intake area of most of the air purifiers is larger, that is, most of the surfaces of the air purifiers are required to be provided with air inlets. The air purifier is affected by the air inlet, the external and internal structural layout and design are limited, and the homogenization of the product is serious.

Disclosure of Invention

The embodiment of the utility model aims to provide an air purifier so as to solve the technical problem that the external and internal structural layout and design of the air purifier are limited due to the fact that an air inlet is too large in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an air purifier, including shell, filtration and wind wheel, filtration with the wind wheel all set up in the inside of shell, the air intake has all been seted up to the relative both sides of shell, air purifier has the center pin, the air intake with the center pin is the circumferential angle that the axis corresponds is the air inlet angle, the air inlet angle is the acute angle, wind wheel ultrasonic welding shaping.

Optionally, the air inlet angle is 30 degrees to 60 degrees.

Optionally, the two air inlets are arranged symmetrically about the center axis.

Optionally, the wind wheel comprises a wind wheel body and a wind wheel cover, and the wind wheel body and the wind wheel cover are fixed by ultrasonic welding.

Optionally, the wind wheel body includes a plurality of around the center pin circumference is arranged, the blade keep away from the tangent line of center pin one end is first reference line, the blade keep away from center pin one end with the link of center pin is the second reference line, the contained angle between first reference line and the second reference line is 50 degrees to 70 degrees.

Optionally, the shell includes the circumference casing that is the tube-shape setting and covers respectively and locate two tip casings at circumference casing both ends, the axial direction of circumference casing with the center pin is parallel, the air intake set up in on the circumference casing, one of them tip casing set up with the air outlet that the wind wheel is just right.

Optionally, the circumferential shell is provided with an air inlet grille with the length parallel to the central shaft, the air inlet grille is provided with an air inlet, the end shell is provided with an air outlet grille, the air outlet grille is provided with an air outlet, and the air outlet grille extends to the edge of the end shell and is connected with the air inlet grille.

Optionally, the wind wheel with the filtration is followed the direction of center pin sets gradually, the wind wheel with be provided with the isolation frame between the filtration, the shell the filtration with enclose between the isolation frame with the wind chamber of air intake intercommunication.

Optionally, a fixing frame is arranged at one end of the wind wheel, which is opposite to the filtering structure, and a circuit board is fixed at one side of the fixing frame, which faces the shell.

Optionally, the isolation frame include around the isolation frame that the wind wheel set up and circumference set up in a plurality of first support feet on the isolation frame, the mount include fixed frame and circumference set up in a plurality of second support feet on the fixed frame, fixed frame with the isolation frame set up in the axial both ends of wind wheel, first support foot with second support foot fixed connection.

The air purifier provided by the utility model has the beneficial effects that: compared with the prior art, the air purifier comprises the shell, the filtering structure and the wind wheel, wherein the air inlets are formed in the two opposite sides of the shell, and the air inlet angle corresponding to the air inlet is an acute angle, so that the occupied position of the air inlet is relatively small, and the influence on the layout of the external and internal structures of the air purifier is small. Meanwhile, when the air inlet angle is smaller, the problems of reduced air purification efficiency, increased noise and the like are caused, and the wind wheel is formed by ultrasonic welding, so that the structure of the wind wheel is more integrated, the problems of reduced air purification efficiency, increased noise and the like are overcome, and the better performance of the air purifier is ensured.

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 an air purifier according to an embodiment of the present utility model;

FIG. 2 is a top view of an air purifier according to an embodiment of the present utility model;

FIG. 3 is an exploded view of a wind turbine according to an embodiment of the present utility model;

FIG. 4 is a top view of a wind turbine according to an embodiment of the present utility model;

fig. 5 is an internal structural diagram of an air purifier according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1-a housing; 101-an air inlet; 102-an air outlet; 11-a circumferential housing; 111-an air inlet grille; 1111-air inlet grating plates; 12-end housing; 121-an air outlet grille; 1211-out-of-style grid plates; 2-a filtration structure; 3-wind wheel; 31-a wind wheel body; 311-leaves; 32-a turbine cover; 4-an isolation frame; 41-an isolation frame; 42-first bracket legs; 5-fixing frame; 51-a fixed frame; 52-second leg.

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 can adsorb, decompose or convert various air pollutants, such as PM2.5, dust, pollen, peculiar smell, decoration pollution such as formaldehyde, bacteria, allergen and the like, and the product of the air purifier for effectively improving the air cleanliness is mainly divided into household and commercial air purifiers.

The air inlet angle of the existing air purifier is larger, and the internal structure layout of the air purifier is limited greatly. In order to reduce the limitation and influence of the air inlet of the air purifier on the internal structural layout of the air purifier, the utility model provides a novel air purifier.

An air purifier provided by an embodiment of the present utility model will now be described.

Referring to fig. 1 to 3, the air purifier includes a housing 1, a filter structure 2, and a wind wheel 3.

The shell 1 is an exposed part of the air purifier, and an air inlet 101 and an air outlet 102 are formed in the shell 1. Specifically, the two opposite sides of the housing 1 are provided with the air inlets 101, that is, the number of the air inlets 101 is two, and the two air inlets 101 are disposed on the two opposite sides of the housing 1. The air purifier has the center pin, and the circumference both sides of air intake 101 link to each other with the center pin respectively, form two air inlet face, and the contained angle between two air inlet faces is air inlet angle A, and air inlet angle A is the acute angle for air inlet angle is less relatively. Because the number of the air inlets 101 is two, the total air inlet angle of the air purifier is 2A, A is an acute angle, and the total air inlet angle 2A is smaller than 180 degrees. Therefore, the total air inlet angle of the air purifier provided by the utility model is relatively smaller, and the layout of the external and internal structures of the air purifier is less affected, for example, a circuit board and other structures can be arranged at the position of the shell 1 corresponding to the position without the air inlet 101, so that the structure of the air purifier is more compact.

The filter structure 2 is arranged in the shell 1, and air enters the air purifier from the air inlet 101 of the shell 1, is filtered by the filter structure 2 and is discharged through the wind wheel 3. The filter structure 2 can be a filter screen, a HEPA and other structures, and can filter dust, pollen, peculiar smell, decoration pollution and the like. Therefore, the air can be purified to a certain extent after being filtered by the filter structure 2.

The wind wheel 3 is arranged in the shell 1, and air filtered by the filtering structure 2 is discharged from the wind wheel 3. The structural stability of the wind wheel 3 may affect the operation noise of the air purifier and the air purifying efficiency. The structure of the wind wheel 3 is more stable, and the smaller the working noise of the air purifier is, the higher the air purifying efficiency is. Conversely, the more unstable the structure of the wind wheel 3, the greater the operating noise of the air cleaner, and the lower the air cleaning efficiency. The air purifying efficiency refers to the purifying speed and the purifying capacity of the air purifier for quantitative pollution sources in a certain indoor space and a certain working time.

The air purifier in the above embodiment comprises a housing 1, a filtering structure 2 and an air wheel 3, wherein air inlets 101 are formed in two opposite sides of the housing 1, and air inlet angles corresponding to the air inlets 101 are acute angles, so that the occupied positions of the air inlets 101 are relatively small, and the influence on the external and internal structural layout of the air purifier is small. Meanwhile, when the air inlet angle is smaller, the problems of reduced air purification efficiency, increased noise and the like are caused, the wind wheel 3 is formed by ultrasonic welding, and the structure of the wind wheel 3 is more integrated, so that the problems of reduced air purification efficiency, increased noise and the like are overcome, and the better performance of the air purifier is ensured.

In some embodiments of the present utility model, referring to fig. 2, the air intake angle a is 30 degrees to 60 degrees, such as 35 degrees, 45 degrees, 50 degrees, etc. When the air inlet angle A is too large, for example, the air inlet 101 occupies a larger space of the shell 1 when the air inlet angle A is close to 90 degrees, which is not beneficial to the internal structural layout of the air purifier; when the air inlet angle A is smaller, the air inlet quantity is smaller, the wind resistance in the air purifier is smaller, and the air purifying efficiency is lower. Accordingly, the air intake angle a is set to 30 degrees to 60 degrees.

Optionally, the air inlet angle a is 45±5 degrees, such as 40 degrees, 45 degrees, 48 degrees, etc. When the air inlet angle A is 45+/-5 degrees, not only can a certain air inlet quantity be ensured, but also the excessive space of the shell 1 can not be occupied.

In some embodiments of the present utility model, referring to fig. 1 and 2, two air inlets 101 are arranged symmetrically about a central axis, firstly, the housing 1 is made to be a central symmetrical structure, the structure of the air purifier is also easier to be arranged, secondly, the air inlet amounts at two sides of the air purifier are the same, the air channel air volume in the air purifier is uniform, and the air purifying efficiency is higher.

Alternatively, the air cleaner is cylindrical, and the two air inlets 101 are respectively disposed on opposite sides of one of the radial directions of the air cleaner, that is, the circumferential positions of the two air inlets 101 are 180 degrees apart.

Alternatively, the air purifier is a rectangular cylinder, and the two air inlets 101 are respectively arranged at two opposite corners of the air purifier.

In some embodiments of the present utility model, referring to fig. 3, the wind wheel 3 includes a wind wheel body 31 and a wind wheel cover 32, the wind wheel cover 32 is disposed at one end of the wind wheel body 31, and the wind wheel body 31 and the wind wheel cover 32 are ultrasonically welded and fixed, so that the structure of the wind wheel 3 is more stable, the possibility of vibration noise generated by the wind wheel 3 is reduced and the wind resistance is correspondingly reduced when the air purifier works. Specifically, ultrasonic welding is to transfer high-frequency vibration waves to the surfaces of two objects to be welded (the wind wheel body 31 and the wind wheel cover 32), and to rub the surfaces of the two objects against each other under pressure to form fusion between molecular layers. Therefore, when ultrasonic welding is adopted, the structure of the wind wheel 3 is more integrated, no gap exists between the wind wheel body 31 and the wind wheel cover 32 basically, the overall wind resistance of the air purifier is reduced, the fixed connection of the wind wheel body 31 and the wind wheel cover 32 is more stable, and the possibility of vibration of the wind wheel 3 is smaller when air flows.

In some embodiments, referring to fig. 3 and 4, the wind wheel body 31 includes a plurality of blades 311, and the plurality of blades 311 are arranged along the central axis in the circumferential direction. The central axis of the air purifier and the central axis of the wind wheel body 31 may be overlapped, and the plurality of blades 311 may be circumferentially arranged along the central axis of the wind wheel body 31. Each blade 311 is disposed near the circumferential edge of the rotor body 31. The plane perpendicular to the central axis of the air purifier is a projection plane, the projection of the blade 311 on the projection plane is an involute, and the distance between one end of the blade 311 close to the central axis and one end of the blade 311 far from the central axis and the central axis is gradually increased. An airflow channel is formed between two adjacent blades 311, and the airflow generated by the wind wheel 3 flows out of each airflow channel.

Optionally, a tangent line of an end of the blade 311 away from the central axis is a first reference line, and a projection of the blade 311 on the projection plane is an involute, and a tangent line of the involute at the end of the blade away from the central axis is the first reference line. The connection line between the end of the blade 311 far away from the central shaft and the central shaft is a second reference line, the projections of the blade 311 and the central shaft on the projection plane are respectively an involute and a point, and the connection line between the end of the involute far away from the central shaft and the projection point of the central shaft is the second reference line. The included angle between the first reference line and the second reference line is an included angle B, and the included angle B is 50-70 degrees. When the angle B is too large, the blades 311 are arranged closer to the circumscribed cylindrical surface of the wind wheel 3, so that the airflow can be influenced by the blades 311; when the angle B is too small, the blades 311 are arranged closer to the radial direction of the wind wheel 3, centrifugal wind cannot be generated, and the suction force of the air purifier is weak. Accordingly, the included angle B is set to 50 degrees to 70 degrees, such as 53 degrees, 55 degrees, 57 degrees, and so on.

In some embodiments, the air purifier further comprises a motor for driving the wind wheel 3 to rotate, and centrifugal force is generated when the wind wheel 3 rotates, so that air flow is discharged from the air flow channel between the blades 311. Specifically, when the motor rotates, the air flow in the air enters the air purifier through the air inlet 101 of the housing 1, then enters the wind wheel 3 after being filtered by the filtering structure 2, and the wind wheel 3 rotates to discharge the air flow from the air flow channel between the blades 311.

In some embodiments of the present utility model, referring to fig. 1 and 2, the casing 1 includes a circumferential housing 11 and two end housings 12, the circumferential housing 11 is configured in a cylindrical shape, two ends of the circumferential housing 11 are open, and the two end housings 12 are respectively disposed at two ends of the circumferential housing 11.

Alternatively, the axial direction of the circumferential housing 11 is parallel to the central axis, that is, the axial direction of the casing 1 is parallel to the central axis of the air cleaner. Optionally, the axis of the circumferential housing 11 coincides with the central axis of the air purifier, which is more beneficial to the layout of the internal structure of the air purifier and also makes the structure of the air purifier more symmetrical.

Alternatively, the circumferential housing 11 is cylindrical, and the cross section of the circumferential housing 11 may be circular, square, elliptical, or the like. The air inlet 101 is opened in the circumferential housing 11.

Alternatively, of the two end housings 12, one end housing 12 is a bottom housing, which may be placed on the floor or table, the other end housing 12 is a top housing, and the air outlet 102 is opened in the top housing. When the wind wheel 3 rotates, air flow enters the shell 1 from the air inlet 101 on the circumferential shell 11, is filtered by the filtering structure 2, and is discharged by the wind wheel 3.

In some embodiments of the present utility model, referring to fig. 1, the circumferential housing 11 has an air inlet grille 111, and the length direction of the air inlet grille 111 is parallel to the central axis, that is, the air inlet grille 111 extends along the axial direction of the air cleaner. The air inlet 101 is arranged at the air inlet grille 111, and the air inlet grille 111 has a certain guiding function on the air flow of the air inlet. The end shell 12 is provided with an air outlet grille 121, an air outlet 102 is arranged at the air outlet grille 121, the air outlet grille 121 extends to the edge of the end shell 12, and the air outlet grille 121 is connected with the air inlet grille 111. In this embodiment, the air outlet grille 121 of the end housing 12 is connected with the air inlet grille 111 on the circumferential housing 11, so that the surface structure of the casing 1 of the air purifier is smoother, steps formed between the end of the air outlet grille 121 and the end of the air inlet grille 111 and the surface of the casing 1 are avoided, and the surface of the casing 1 is smoothly arranged. Moreover, the arrangement of the air outlet grille 121 and the air inlet grille 111 makes the structural strength of the shell 1 at the air outlet 102 and the air inlet 101 higher.

Optionally, the air inlet grille 111 includes a plurality of air inlet grille plates 1111 arranged in parallel, the circumferential housing 11 is provided with air inlet holes between two adjacent air inlet grille plates 1111, and between any two adjacent air inlet grille plates 1111, the number of air inlet holes may be one, which is a long strip-shaped air inlet hole, the number of air inlet holes is also a plurality of, and the plurality of air inlet holes are sequentially arranged at intervals along the length direction of the air inlet grille 111. In the same air inlet grille 111, all the air inlet holes may be collectively referred to as the air inlet 101.

Optionally, the air outlet grille 121 includes a plurality of air outlet grille plates 1211 disposed in parallel, the end housing 12 has air outlet holes between two adjacent air outlet grille plates 1211, and the number of air outlet holes between any two adjacent air outlet grille plates 1211 may be one, which is a strip-shaped air outlet hole, and the number of air outlet holes is also a plurality of air outlet holes, and the plurality of air outlet holes are sequentially arranged at intervals along the extending direction of the air outlet grille 121. In the same outlet grille 121, all the air outlets may be collectively referred to as the air outlets 102.

Optionally, the number of the air inlets 101 is two, and the number of the air outlets 102 is also two. Accordingly, the number of the air inlet grids 111 is two, the number of the air outlet grids 121 is also two, and the two air inlet grids 111 and the two air outlet grids 121 are connected in a one-to-one correspondence manner. When one of the air inlet grilles 111 is connected to one of the air outlet grilles 121, the plurality of air inlet grill plates 1111 are correspondingly connected to one another in a one-to-one correspondence manner to the air outlet grill plates 1211.

Optionally, the number of the air inlets 101 is two, and the number of the air outlets 102 is also two. The cross section of the circumferential housing 11 is rectangular or substantially rectangular. The air inlet 101 is arranged at two opposite angles of the circumferential shell 11, the air inlet grille 111 is also arranged at two opposite angles of the circumferential shell 11, the two air outlets 102 are all arranged on one end shell 12, the two air outlet grilles 121 can be L-shaped and arranged around four sides of the end shell 12, and the middle space surrounded by the two air outlet grilles 121 can be provided with a control panel and other structures.

In some embodiments of the present utility model, referring to fig. 5, the wind wheel 3 and the filtering structure 2 are sequentially arranged along the direction of the central axis, so that the air purifier extends along the axial direction thereof, and when the air purifier is placed on the ground, the axial direction thereof is in the vertical direction, and the wind wheel 3 is arranged near the air outlet 102, so that the air outlet 102 can be arranged higher. The air outlet 102 is arranged at the top of the air purifier, and the wind wheel 3 is also arranged above the filtering structure 2.

Optionally, a separation frame 4 is arranged between the wind wheel 3 and the filtering structure 2, and the separation frame 4 is used for separating the space inside the casing 1 into two parts. Through the setting of isolation frame 4 for be formed with the wind chamber between shell 1 and the filtration 2, air intake 101 communicates with each other with the wind chamber. The isolation frame 4 is provided with a through hole for filtered air to enter the wind wheel 3. Specifically, the air flow enters the wind cavity through the air inlet 101, and the air flow in the wind cavity enters the inside of the filter structure 2 after being filtered by the filter structure 2, and then enters the wind wheel 3 through the through hole on the isolation frame 4.

Alternatively, the filter structure 2 may be cylindrical, and the space in the cylinder of the filter structure 2 is communicated with the wind wheel 3 through a through hole on the isolation frame 4. Specifically, the outer peripheral wall of the filter structure 2 is disposed facing the housing 1, and the outer peripheral wall of the filter structure 2 is the outer peripheral side of the filter structure 2, the inner peripheral wall of the filter structure 2 encloses into a cartridge space, and the inner peripheral wall of the filter structure 2 is the inner peripheral side of the filter structure 2, the outer peripheral side of the filter structure 2 is an unfiltered airflow, and the inner peripheral side of the filter structure 2 is a filtered airflow.

In some embodiments of the present utility model, referring to fig. 5, the air purifier further includes a fixing frame 5, the fixing frame 5 and the isolation frame 4 are respectively disposed at two axial ends of the wind wheel 3, and the fixing frame 5 and the isolation frame 4 provide a relatively stable space for installing the wind wheel 3. In addition, a circuit board is fixed on the side of the fixing frame 5 facing the housing 1, and the fixing frame 5 provides a mounting space for mounting the circuit board. The circuit board is disposed adjacent to the end housing 12, facilitating the placement of a control panel on the end housing 12 that triggers the circuit board.

Optionally, the isolation frame 4 includes an isolation frame 41 and a first support leg 42, the fixing frame 5 includes a fixing frame 51 and a second support leg 52, the isolation frame 41 and the fixing frame 51 are respectively disposed at two axial ends of the wind wheel 3, the first support leg 42 extends toward the fixing frame 51, and the second support leg 52 extends toward the isolation frame 41. The first bracket leg 42 and the second bracket leg 52 are connected and fixed to each other, and may be fixed to each other by a connecting member such as a screw, so that the fixing frame 51 and the isolation frame 41 are fixed to each other. The number of the first stand legs 42 is plural, the first stand legs 42 are provided to extend in the circumferential direction of the partition frame 41, the number of the second stand legs 52 is plural, and the second stand legs 52 are provided to extend in the circumferential direction of the fixing frame 51. The first support legs 42 and the second support legs 52 are the same in number, and the first support legs 42 and the second support legs 52 are connected in one-to-one correspondence.

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, characterized in that: the air purifier comprises a shell, a filtering structure and a wind wheel, wherein the filtering structure and the wind wheel are arranged in the shell, air inlets are formed in two opposite sides of the shell, the air purifier is provided with a central shaft, the circumferential angle corresponding to the central shaft serving as an axis of the air inlet is an air inlet angle, the air inlet angle is an acute angle, and the wind wheel is formed by ultrasonic welding.

2. An air cleaner as set forth in claim 1, wherein: the air inlet angle is 30-60 degrees.

3. An air cleaner as set forth in claim 1, wherein: the two air inlets are arranged symmetrically about the center of the central shaft.

4. An air cleaner as set forth in claim 1, wherein: the wind wheel comprises a wind wheel body and a wind wheel cover, and the wind wheel body and the wind wheel cover are fixed by ultrasonic welding.

5. An air cleaner as set forth in claim 4, wherein: the wind wheel body comprises a plurality of blades circumferentially arranged around the central shaft, a tangent line of one end of each blade, which is far away from the central shaft, is a first reference line, a connecting line of one end of each blade, which is far away from the central shaft, and the central shaft is a second reference line, and an included angle between the first reference line and the second reference line is 50-70 degrees.

6. An air cleaner as set forth in claim 1, wherein: the shell comprises a circumferential shell body and two end part shell bodies, wherein the circumferential shell body is in a cylindrical shape, the two end part shell bodies are respectively arranged at two ends of the circumferential shell body in a covering mode, the axial direction of the circumferential shell body is parallel to the central shaft, the air inlet is formed in the circumferential shell body, and one end part shell body is provided with an air outlet opposite to the wind wheel.

7. An air cleaner as set forth in claim 6, wherein: the circumferential shell is provided with an air inlet grille with the length parallel to the central shaft, the air inlet grille is arranged at the air inlet, the end shell is provided with an air outlet grille, the air outlet grille is provided with an air outlet, and the air outlet grille extends to the edge of the end shell and is connected with the air inlet grille.

8. An air cleaner according to any one of claims 1-7 wherein: the wind wheel with the filtration is followed the direction of center pin sets gradually, the wind wheel with be provided with the isolation frame between the filtration, the shell the filtration with enclose between the isolation frame with the wind chamber of air intake intercommunication.

9. An air cleaner according to claim 8 wherein: the wind wheel is opposite to the one end of the filtering structure and is provided with a fixing frame, and one side of the fixing frame facing the shell is fixed with a circuit board.

10. An air cleaner according to claim 9 wherein: the isolation frame comprises an isolation frame arranged around the wind wheel and a plurality of first support feet arranged on the isolation frame in the circumferential direction, the fixing frame comprises a fixing frame and a plurality of second support feet arranged on the fixing frame in the circumferential direction, the fixing frame and the isolation frame are arranged at two axial ends of the wind wheel, and the first support feet are fixedly connected with the second support feet.