CN111195470A

CN111195470A - Air purifier

Info

Publication number: CN111195470A
Application number: CN202010099321.7A
Authority: CN
Inventors: 冉宏宇; 张启东; 路尧远; 刘义刚
Original assignee: SUZHOU BEIANG TECHNOLOGY Ltd
Current assignee: SUZHOU BEIANG TECHNOLOGY Ltd
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2020-05-26

Abstract

The application relates to an air purifier belongs to air purification technical field. The application provides an air purifier, which comprises a shell, wherein an air inlet part is arranged at the lower side of the shell, and an air outlet part is arranged at the upper side of the shell; the air channel is located inside the shell and is provided with a purification assembly, a flow guide cover and a centrifugal fan assembly from bottom to top, and an air inlet of the purification assembly is opposite to an air outlet of the purification assembly from top to bottom. In this air purifier, purify subassembly downside air inlet, upside air-out, adopt centrifugal fan subassembly as air power source, simple structure, the low power dissipation. Install the kuppe between purification subassembly and centrifugal fan subassembly, effective wind-guiding, noise reduction.

Description

Air purifier

Technical Field

The application relates to the technical field of air purification, particularly, relate to an air purifier.

Background

Along with the attention degree of consumer to the environment is higher and higher, place indoor as one, can air-purifying, the air purifier of the high intelligent equipment of promotion air quality can obtain consumer's favor naturally. Meanwhile, the air purifier meeting different requirements of consumers and different application scenes is produced. In any case, the purifying capacity (the amount of clean air CADR) of the air purifier and the noise of operation are always important parameters for consumers to measure the performance of the air purifier, which means that a truly effective air purifier not only has high purifying efficiency and capacity, but also has better noise as low as possible.

Disclosure of Invention

Therefore, the application provides an air purifier, which not only has low power consumption, but also has lower noise.

The air purifier comprises a shell, wherein an air inlet part is arranged on the lower side of the shell, and an air outlet part is arranged on the upper side of the shell; the air channel is located inside the shell and is provided with a purification assembly, a flow guide cover and a centrifugal fan assembly from bottom to top, and an air inlet of the purification assembly is opposite to an air outlet of the purification assembly from top to bottom.

In the air purifier of this application embodiment, purify subassembly downside air inlet, upside air-out, adopt centrifugal fan subassembly as air power source, simple structure, the low power dissipation. Install the kuppe between purification subassembly and centrifugal fan subassembly, effective wind-guiding, noise reduction.

In addition, the air purifier according to the embodiment of the application also has the following additional technical characteristics:

according to some embodiments of the application, purify the subassembly including from bottom to top install in proper order in the primary filter screen, the electrostatic precipitation module and the high-efficient catalysis net of the inside of casing, the air current can pass in proper order flow direction behind primary filter screen, the electrostatic precipitation module and the high-efficient catalysis net the kuppe. The purification assembly of this arrangement is capable of rectifying the air flow three times. After the rectification of the third time, the air outlet of the purification assembly is uniform, the wind direction is approximately in the same direction, and the cleanliness is improved. In the process of three times of rectification, because the airflow is guided for many times, the noise is lower in the purification process, and the purification efficiency is high.

According to some embodiments of the present application, the electrostatic dust collection module comprises a generation plate for generating positive ions for positively charging dust particles; and a collecting plate located on an upper side of the generating plate, the collecting plate for forming a negative electric field to collect positively charged dust particles. The arrangement form has simple structure and high purification efficiency.

According to some embodiments of the present application, the collecting pole plate comprises a plurality of collecting pole pieces and a plurality of repelling pole pieces, the plurality of collecting pole pieces and the plurality of repelling pole pieces are alternately arranged at intervals, and a channel for air flow to pass through is arranged between each collecting pole piece and the repelling pole piece adjacent to the collecting pole piece. Through this kind of arrangement form, can still rectify the air current when doing benefit to negative electric field and remove dust.

According to some embodiments of the application, the kuppe is two flaring forms, the flaring that leans on of kuppe is the mass flow portion, the flaring that leans on of kuppe is diffusion portion, the mass flow portion is located the upside of the air outlet of purification subassembly, diffusion portion with the lower side perisporium profile matching of centrifugal fan subassembly just leaves the clearance. Through this kind of arrangement form, lead, flow equalize the air-out that comes from purifying the air outlet, both improved the air output, reduced the noise again.

According to some embodiments of the present application, the centrifugal fan assembly includes a motor mounted to the housing; and the centrifugal fan blade is arranged at the output end of the motor, the motor can drive the centrifugal fan blade to rotate, the lower side of the centrifugal fan blade is used for air inlet, and the peripheral wall of the centrifugal fan blade is used for air outlet. Compared with the axial flow fan blade, the arrangement mode has the advantages of simple structure and low power consumption.

According to some embodiments of the application, the outer periphery of the bottom of the centrifugal fan blade is provided with a first cambered surface, the inner wall of the air guide sleeve is provided with a second cambered surface matched with the first cambered surface, and the gap between the first cambered surface and the second cambered surface is 3-4 mm. The arrangement mode can allow the centrifugal fan blades to slightly shake in the rotating process, and can effectively prevent air flow from flowing through the gap, so that noise is reduced.

According to some embodiments of the present application, the upper cover plate of the centrifugal fan blade is a guide plate, an outer edge of the guide plate is inclined upward, and an included angle between the guide plate and the radial direction of the centrifugal fan blade is 8-12 °. Through this kind of arrangement form, can alleviate the collision of the inner wall of centrifugal fan subassembly to the effluence of casing, the air output is big, and the noise is lower.

According to some embodiments of the present application, the air inlet portion includes three side wall air inlets respectively located at lower sides of left, right and rear side walls of the housing; and the two bottom air inlets are positioned at the left side and the right side of the bottom wall of the shell. The arrangement mode has the advantages of uniform air inlet, large air inlet amount and low noise.

According to some embodiments of the present application, the air outlet portion comprises a top air outlet, the top air outlet being located at a top of the housing; and the two side wall air outlets are all corresponding to the air outlet height of the centrifugal fan assembly, the two side wall air outlets are symmetrically arranged on the left side wall and the right side wall of the shell, and each side wall air outlet is sunken towards the inside of the shell to form a hand-held part. The air outlet of the arrangement form is uniform, the air outlet quantity is large, and the noise is low. Two portable portions can reach the air-out, are convenient for portable again, make air purifier easily move, and compact structure.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic view of an air purifier provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

FIG. 4 is an enlarged view of a portion of FIG. 2 at C;

FIG. 5 is an enlarged view of a portion of FIG. 2 at D;

fig. 6 is a schematic structural diagram of another view angle of an air purifier according to an embodiment of the present application.

Icon: 100-an air purifier; 10-a housing; 11-left side wall; 111-a first sidewall intake vent; 112-a first sidewall outlet; 113-a first handle; 12-right side wall; 121-second sidewall air intake; 122-second sidewall outlet; 123-a second handle; 13-a front side wall; 14-rear side wall; 141-third side wall air inlet; 15-a bottom wall; 151-a first bottom air inlet; 152-a second bottom air inlet; 153-a shoe; 16-a top cover; 161-top air outlet; 17-bottom cover inner plate; 171-a ventilation net; 172-support group plate; 173-a cavity; 174-bottom air intake duct; 18-an air inlet part; 19-an air outlet part; 20-an air duct; 30-a purification component; 31-primary filter screen; 311-primary net support; 32-an electrostatic dust collection module; 321-a generating polar plate; 322-collecting the plate; 3221-collecting pole piece; 3222-repelling pole piece; 3223-channel; 33-high efficiency catalytic mesh; 34-purifying the air inlet; 35-a purified air outlet; 40-a flow guide sleeve; 41-a current collector; 42-a diffuser; 421-second cambered surface; 422-a first flow guiding surface; 50-a centrifugal fan assembly; 51-a motor support frame; 52-a motor; 53-centrifugal fan blades; 531-air inlet of the fan; 532-a fan air outlet; 533-first arc; 534-a deflector; 5341-second flow guiding surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Referring to fig. 1, an air purifier 100 according to an embodiment of the present disclosure includes a housing 10 and an air duct 20. An air inlet portion 18 is provided at the lower side of the housing 10, and an air outlet portion 19 is provided at the upper side of the housing 10. The air duct 20 is located inside the casing 10, and the air duct 20 is provided with a purification assembly 30, a flow guide cover 40 and a centrifugal fan assembly 50 from bottom to top. The air inlet of the purification component 30 is opposite to the air outlet thereof.

In the air purifier 100 of the embodiment of the application, the air inlet at the lower side of the purifying assembly 30 and the air outlet at the upper side adopt the centrifugal fan assembly 50 as an air power source, and the air purifier is simple in structure and low in power consumption. The air guide sleeve 40 is arranged between the purification component 30 and the centrifugal fan component 50, so that air is effectively guided, and noise is reduced.

The structure and mutual arrangement relationship of the components of the air purifier 100 of the embodiment of the present application are described below.

Referring to fig. 1, the housing 10 includes a left side wall 11, a right side wall 12, a front side wall 13, a rear side wall 14, a bottom wall 15, and a top cover 16.

The left side wall 11, the right side wall 12 and the front side wall 13 are integrally formed main housings, and the rear side wall 14, the bottom wall 15 and the top cover 16 are all mounted on the main housings to form a housing of the air purifier 100.

The air inlet 18 is formed in the housing 10 to allow external air to enter the duct 20.

In some embodiments of the present application, the air inlet portion 18 includes three side air inlets and two bottom air inlets, the three side air inlets are respectively located at the lower sides of the left side wall 11, the right side wall 12 and the rear side wall 14 of the housing 10, and the two bottom air inlets are located at the left and right sides of the bottom wall 15 of the housing 10.

Referring to fig. 1, a first sidewall air inlet 111 is disposed at a lower side of the left sidewall 11, a second sidewall air inlet 121 is disposed at a lower side of the right sidewall 12, and a third sidewall air inlet 141 is disposed at a lower side of the rear sidewall 14.

The three side wall air inlets include a plurality of through holes, which not only keeps the appearance of the shell 10 beautiful, but also can effectively supply air.

Referring to fig. 6, the left and right sides of the bottom wall 15 are respectively provided with a first bottom air inlet 151 and a second bottom air inlet 152, and the first bottom air inlet 151 and the second bottom air inlet 152 are symmetrically arranged on the bottom wall 15.

The bottom wall 15 is further provided with four pad seats 153 for supporting on the ground, and a gap is left between the bottom wall 15 and the ground for air intake.

Referring to fig. 1 and 2, as an implementation form, the inside of the casing 10 further includes a bottom cover inner plate 17, two ventilation nets 171 are disposed on the bottom cover inner plate 17, and the two ventilation nets 171 respectively correspond to the first bottom air inlets 151 and the second bottom air inlets 152. The bottom cover inner plate 17 and the bottom wall 15 are supported by a support plate assembly 172 and separate a cavity 173 and two bottom air inlet channels 174.

Referring to fig. 3, for example, the support plate assembly 172 may be divided into an upper half and a lower half, the lower half is mounted on the upper side of the bottom wall 15, the lower half is mounted on the bottom cover inner plate 17, and the upper half and the lower half together form a cavity 173. It will be readily appreciated that this arrangement is easy to assemble and also facilitates maintenance replacement of the control device and ventilation mesh 171.

Referring to fig. 3, taking the first bottom air inlet 151 as an example, the external air sequentially passes through the first bottom air inlet 151, the bottom air inlet duct 174 corresponding thereto, and the ventilation net 171, and then enters the air duct 20. The ventilation net 171 can primarily filter the air entering the bottom intake duct 174 from the first bottom intake port 151 to reduce the number of times the maintenance cleaning assembly 30 and the centrifugal fan assembly 50 are replaced.

It is easily understood that the air purifier 100 of the embodiment of the present application includes five air inlets, and the bottom side is also used for air inlet, and this arrangement has a large air inlet amount and low noise.

Optionally, the cavity 173 is used to house controls for the air purifier 100, making the air purifier 100 compact.

Referring to fig. 2, the air duct 20 includes a purifying assembly 30, a guiding hood 40 and a centrifugal fan assembly 50, and air entering the air duct 20 from the air inlet portion 18 is purified in the air duct 20, and is drawn to the upper side of the housing 10 by the centrifugal fan assembly 50, and is discharged from the air outlet portion 19.

Referring to fig. 1, the air outlet 19 is located in the housing 10 and is used for flowing the purified clean air out of the housing 10 through the air duct 20 to supply air to the external environment.

In some embodiments of the present application, the air outlet portion 19 includes a top air outlet 161 and two side air outlets, which are the first side air outlet 112 and the second side air outlet 122, respectively.

The top cover 16 is centrally provided with a circular grid through which the air flow can pass to form a top air outlet 161.

The first sidewall air outlet 112 is located on the upper side of the left sidewall 11, the second sidewall air outlet 122 is located on the upper side of the right sidewall 12, the first sidewall air outlet 112 and the second sidewall air outlet 122 are arranged on the casing 10 in a left-right manner, and both the first sidewall air outlet 112 and the second sidewall air outlet 122 correspond to the air outlet height of the centrifugal fan assembly 50.

Referring to fig. 1 and 2, preferably, the first sidewall outlet 112 is recessed toward the interior of the left sidewall 11 to form a first handle portion 113, and the second sidewall outlet 122 is recessed toward the interior of the right sidewall 12 to form a second handle portion 123.

As can be easily understood, the first handle portion 113 and the second handle portion 123 can both provide air and facilitate carrying, so that the air purifier 100 is easy to move and has a compact structure.

The air purifying assembly 30 is used to purify the air flowing through the air duct 20.

Referring to fig. 2, the cleaning assembly 30 includes a cleaning air inlet 34 and a cleaning air outlet 35, the cleaning air inlet 34 and the cleaning air outlet 35 are opposite to each other, and the air flow enters the cleaning assembly 30 from the cleaning air inlet 34, is cleaned, and then leaves the cleaning assembly 30 from the cleaning air outlet 35.

In some embodiments of the present application, the purification assembly 30 includes a primary filter screen 31, an electrostatic precipitation module 32, and a high efficiency catalyst screen 33, which are sequentially installed inside the housing 10 from bottom to top. The air flow can pass through the primary filter screen 31, the electrostatic dust collection module 32 and the high-efficiency catalytic screen 33 in sequence and then flow to the air guide sleeve 40. The air inlet of the primary filter screen 31 is the purification air inlet 34, and the air outlet of the high-efficiency catalytic screen 33 is the purification air outlet 35.

The primary filter screen 31, the electrostatic dust collection module 32 and the high-efficiency catalytic screen 33 are all plate-shaped, and the air passing direction is vertical air passing and is consistent with the air flow direction of the air duct 20. This arrangement enables the airflow to flow substantially linearly, making the air purifier 100 less noisy.

The primary filter screen 31 is used for physically filtering impurities such as hair in the air flow.

As an example, the primary filter screen 31 includes a primary screen support 311 and a filter screen, the primary screen support 311 is transversely inserted into the casing 10, the filter screen is installed on the primary screen support 311, and the airflow passes through the filter screen from bottom to top, so as to realize physical filtration.

It will be readily appreciated that when it is desired to replace the screen, the primary screen support 311 may be pulled out and replaced with a new screen and then inserted back into the housing 10.

The electrostatic dust collection module 32 collects dust particles attached to the air using an electric field.

Referring to fig. 2, in some embodiments of the present application, the electrostatic dust collection module 32 includes a generating plate 321 and a collecting plate 322.

The generating polar plate 321 is provided with a row of generating polar wires which are connected with high voltage electricity, the generating polar wires can generate a large amount of positive ions, and a gap is reserved between every two adjacent generating polar wires. When the airflow passes through the generating plate 321, the positive ions meet the dust particles, so that the dust particles are positively charged.

The collecting plate 322 is spaced above and below the generating plate 321, the collecting plate 322 is located on the upper side of the generating plate 321, and the collecting plate 322 is used for forming a negative electric field to collect the positively charged dust particles.

Referring to fig. 4, as an implementation form, the collecting pole plate 322 includes a plurality of collecting pole pieces 3221 and a plurality of repelling pole pieces 3222, the plurality of collecting pole pieces 3221 and the plurality of repelling pole pieces 3222 are alternately arranged at intervals, and a channel 3223 for air flow to pass through is arranged between each collecting pole piece 3221 and the repelling pole piece 3222 adjacent to the collecting pole piece. The passages 3223 extend up and down, in line with the direction of the airflow. The repelling electrode piece 3222 is grounded, the collecting electrode piece 3221 is grounded to high voltage and negative electricity, and a negative electric field is formed between the repelling electrode piece 3222 and the adjacent collecting electrode piece 3221.

When the airflow passes through the plurality of channels 3223, the positively charged dust particles carried in the airflow migrate to the collecting pole pieces 3221 and are adsorbed on the collecting pole pieces 3221, so that electrostatic dust collection is realized.

As a supplementary effect, the negative electric field can also decompose formaldehyde gas carried in the airflow into carbon dioxide and water, and the effect of absorbing formaldehyde is achieved.

The high-efficiency catalytic net 33 can absorb TVOC gas, such as toluene, formaldehyde, ethylbenzene, propylene glycol, phenols, etc., which may be present in the air, and is also used for further rectifying the outlet air of the electrostatic dust collection module 32.

In some embodiments of the application, a plurality of up-down through mesh structures are evenly distributed on the high-efficiency catalysis net 33, so that the airflow direction can be further changed, and the wind speed of the outlet air of the high-efficiency catalysis net 33 is approximately uniform and the wind direction is approximately in the same direction.

It will be readily appreciated that the purge assembly 30 is capable of three times rectifying the gas flow. When the air flow passes through the purification assembly 30 from bottom to top, the primary filter screen 31 rectifies the air flow for the first time, the electrostatic dust collection module 32 rectifies the air flow for the second time, and the efficient catalytic screen 33 rectifies the air flow for the third time. After three times of rectification, the airflow is blown out from the purification air outlet 35, the wind speed is approximately uniform, the wind direction is approximately in the same direction, and the cleanliness is improved. In the process of three times of rectification, because the airflow is guided for many times, the noise is lower in the purification process, and the purification efficiency is high.

As an example form, when the distance L between the air outlet of the electrostatic dust collection module 32 and the air inlet of the high-efficiency catalysis net 33 is larger than or equal to 14mm, the surface wind speed difference of the high-efficiency catalysis net 33 is smaller than or equal to 0.2 m/s.

Preferably, L is 15mm, which can both make the wind speed of the air outlet of the purifying module 30 uniform and ensure that the wind speed is not too low. It will be appreciated that a low outlet air speed of the purification assembly 30 will indirectly increase the power consumption of the centrifugal fan assembly 50.

The air guide sleeve 40 is used for rectifying the outlet air of the purifying air outlet 35 and guiding the outlet air into the centrifugal fan assembly 50.

Referring to fig. 5, in some embodiments of the present application, the pod 40 is mounted inside the casing 10, specifically, the pod 40 is mounted on the inner wall of the main casing, the pod 40 is in a double-flared shape, a lower flared portion of the pod 40 is a collecting portion 41, and an upper flared portion of the pod 40 is a diffusing portion 42. The collecting portion 41 is located on the upper side of the air outlet of the purge module 30 (i.e., the upper side of the purge air outlet 35).

In one embodiment, the air guide sleeve 40 comprises a collecting sleeve and a diffuser sleeve which engage with each other, the collecting sleeve forming the collecting portion 41 and the diffuser sleeve forming the diffuser portion 42. In other embodiments, the pod 40 may be a one-piece component.

The cross-sectional area of the collecting portion 41 gradually decreases along with the airflow direction, and the air pressure gradually increases under the air draft effect of the centrifugal fan assembly 50. At the air inlet of the collecting portion 41, along with the guiding suction force applied by the centrifugal fan assembly 50, the outlet air from the purified air outlet 35 can be sucked into the collecting portion 41, so that the smooth upward flow of the air flow is ensured, the air outlet amount is increased on the basis of consuming the same amount of power of the centrifugal fan assembly 50, and the power consumption utilization efficiency of the centrifugal fan assembly 50 is increased.

The cross-sectional area of the diffuser 42 gradually increases along with the airflow direction, and the airflow smoothly flows into the diffuser 42 through the collecting portion 41, and is further equalized in the diffuser 42 to enter the centrifugal fan assembly 50.

As can be easily understood, the flow guide sleeve 40 guides and equalizes the flow of the outlet air from the purge outlet 35, which not only increases the air output, but also reduces the noise.

The centrifugal fan assembly 50 is used for sucking the purified and equalized air flow upwards and guiding the air flow out of the air outlet portion 19.

Referring to fig. 1 and 5, in some embodiments of the present application, a centrifugal fan assembly 50 includes a motor support frame 51, a motor 52, and a centrifugal fan blade 53. The motor support frame 51 is installed on the inner wall of the main casing of the casing 10, the motor 52 is installed on the motor support frame 51, and the centrifugal fan blades 53 are installed on the output end of the motor 52. The motor 52 can drive the centrifugal fan 53 to rotate, and the centrifugal fan 53 is provided with a fan air inlet 531 and a fan air outlet 532. The fan air inlet 531 is located on the lower side of the centrifugal fan blade 53, and the fan air outlet 532 is located on the peripheral wall of the centrifugal fan blade 53.

Compared with an axial flow fan blade, the centrifugal fan blade 53 is selected as an air power source, and the fan blade has the advantages of simple structure and low power consumption.

Optionally, the inner wall of the diffuser 42 of the nacelle 40 is contoured to match and leave a gap with the lower perimeter wall of the centrifugal fan assembly 50.

As an example, the bottom outer periphery of the centrifugal fan blade 53 has a first arc surface 533, the inner wall of the diffuser 42 has a second arc surface 421, the first arc surface 533 and the second arc surface 421 have a contour matching, and a gap D is formed between the first arc surface 533 and the second arc surface 421.

In some embodiments of the present application, the gap D is in the range of 3-4 mm.

It is easy to understand that the centrifugal fan blade 53 will slightly shake during the rotation process, and the range of the gap D is limited to 3-4mm, which not only allows the centrifugal fan blade 53 to slightly shake, but also effectively prevents the air flow from flowing through the gap D, so that the air flow enters the centrifugal fan assembly 50 from the fan air inlet 531, thereby improving the fan purification efficiency and reducing the purification noise.

Preferably, D is 3.5mm, which can improve fan purification efficiency, reduce noise, and allow the centrifugal fan blade 53 to normally rotate.

Optionally, the upper cover plate of the centrifugal fan 53 is a guide plate 534, an air outlet is left in the center of the guide plate 534, the outer edge of the guide plate 534 is inclined upward, and an included angle between the guide plate 534 and the radial direction of the centrifugal fan 53 is β -12 °.

Further, the inner wall of the upper side of the diffuser 42 in the pod 40 is provided with a first guiding surface 422, and the lower side of the guiding plate 534 is provided with a second guiding surface 5341. The first flow guiding surface 422 is substantially parallel to the second flow guiding surface 5341, and the two flow guiding surfaces guide the wind direction of the air discharged from the centrifugal fan assembly 50 together to make the air discharged obliquely upward.

It is easy to understand that the wind outlet direction of the centrifugal fan assembly 50 is approximately β degrees from the x direction (i.e. the radial direction of the centrifugal fan blade 53), and the wind outlet flow can be divided into a first branch flow along the x direction and a second branch flow along the y direction.

The first split stream flows out of the first sidewall outlet 112 and the second sidewall outlet 122, and the second split stream flows out of the top outlet 161. Through this kind of arrangement form, can alleviate the collision of the inner wall of centrifugal fan subassembly 50 effluence to casing 10, the air output is big, and the noise is lower.

Preferably, β is 10 °, so that the air outlet of the centrifugal fan assembly 50 can be uniformly sent out from the first side wall air outlet 112, the second side wall air outlet 122 and the top air outlet 161, the air outlet is uniform, and the noise is low.

The air purifier 100 of the embodiment of the application, under the effect of induced drafting of centrifugal fan subassembly 50, outside air gets into the wind channel 20 of the inside of casing 10 by five air intakes, from bottom to top through purifying subassembly 30, kuppe 40 and centrifugal fan subassembly 50 in proper order, through the in-process that purifies subassembly 30 obtaining purifying and by the three-layer rectification, even under the effect of kuppe 40 again, high-efficient entering centrifugal fan subassembly 50, clean air is followed fan air outlet 532 and is flowed out, the back sends to the external environment through three air outlet. In the whole purification process, the air purifier 100 has high purification efficiency, uniform air outlet, low energy consumption and low noise.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air purifier, comprising:

the air conditioner comprises a shell, wherein an air inlet part is arranged at the lower side of the shell, and an air outlet part is arranged at the upper side of the shell;

the air duct is located inside the shell, the air duct is provided with a purification assembly, a flow guide cover and a centrifugal fan assembly from bottom to top, and an air inlet of the purification assembly is opposite to an air outlet of the purification assembly from top to bottom.

2. The air purifier of claim 1, wherein the purifying assembly comprises a primary filter screen, an electrostatic dust collection module and an efficient catalytic screen which are sequentially installed inside the housing from bottom to top, and the airflow can sequentially pass through the primary filter screen, the electrostatic dust collection module and the efficient catalytic screen and then flow to the air guide sleeve.

3. The air cleaner of claim 2, wherein the electrostatic dust collection module comprises:

a generating electrode plate for generating positive ions for positively charging dust particles;

a collecting plate located on an upper side of the generating plate, the collecting plate for forming a negative electric field to collect positively charged dust particles.

4. The air cleaner of claim 3, wherein the collector plate comprises a plurality of collector plates and a plurality of repeller plates, the plurality of collector plates and the plurality of repeller plates being alternately spaced, each collector plate and repeller plate adjacent thereto having a channel therebetween for the flow of air to pass through.

5. The air purifier of claim 1, wherein the dome is in a double-flared shape, a lower flared portion of the dome is a flow collecting portion, an upper flared portion of the dome is a pressure diffusing portion, the flow collecting portion is located above the air outlet of the purification assembly, and the pressure diffusing portion is matched with the contour of the lower peripheral wall of the centrifugal fan assembly and has a gap.

6. The air cleaner of claim 1, wherein the centrifugal fan assembly comprises:

a motor mounted to the housing;

centrifugal fan blade, centrifugal fan blade install in the output of motor, the motor can drive centrifugal fan blade rotates, centrifugal fan blade's downside is used for the air inlet, centrifugal fan blade's perisporium is used for the air-out.

7. The air purifier as claimed in claim 6, wherein the bottom outer periphery of the centrifugal fan blade has a first arc surface, the inner wall of the air guide sleeve has a second arc surface matching with the first arc surface, and a gap between the first arc surface and the second arc surface is 3-4 mm.

8. The air purifier as claimed in claim 6, wherein the top cover plate of the centrifugal fan is a baffle, the outer edge of the baffle is inclined upwards, and the angle between the baffle and the radial direction of the centrifugal fan is 8-12 °.

9. The air cleaner of claim 1, wherein the air inlet portion comprises:

the three side wall air inlets are respectively positioned at the lower sides of the left side wall, the right side wall and the rear side wall of the shell;

and the two bottom air inlets are positioned at the left side and the right side of the bottom wall of the shell.

10. The air cleaner of claim 1, wherein the air outlet portion comprises:

a top air outlet located at the top of the housing;

the centrifugal fan comprises two side wall air outlets, the two side wall air outlets all correspond to the air outlet height of the centrifugal fan assembly, the two side wall air outlets are symmetrically arranged on the left side wall and the right side wall of the shell, and each side wall air outlet is sunken into the inside of the shell to form a hand-held portion.