CN217235991U - Air purifier - Google Patents

Abstract

The application relates to the technical field of air purification equipment, discloses an air purifier, includes: the air inlet and the air outlet are arranged on the same side plate of the shell; the purification component is arranged in the shell and is positioned at the air outlet or the air inlet; the fan assembly is arranged in the shell and comprises one or more centrifugal fans; the axis of the impeller of the centrifugal fan is vertical or parallel to the bottom plate of the shell, and the air outlet of the centrifugal fan faces the air outlet. The air inlet and the air outlet are both arranged on the same side plate of the shell, so that the air inlet and the air outlet are prevented from being arranged on different side plates to influence the indoor decoration effect; need not to use supplementary wind channel, reduced air purifier's manufacturing cost.

Description

Air purifier

Technical Field

The application relates to the technical field of air purification equipment, for example to an air purifier.

Background

The air purifier is also called as an air cleaner, an air freshener or an air purifier, is a product capable of adsorbing, decomposing or converting various air pollutants (generally including PM2.5, dust, pollen, peculiar smell, formaldehyde and other decoration pollutants, bacteria, allergens and the like) and effectively improving the air cleanliness, and is widely applied to scenes such as families, buildings, factories and the like. The air purifier is internally provided with a fan, and an air duct assembly is generally adopted to guide air exhausted by the fan to circulate to an air outlet of the air purifier.

Air purifier generally adopts following air inlet, the mode of side air-out, is equipped with centrifugal fan in the air purifier, guides centrifugal fan's air-out to air purifier's air outlet through the wind channel, blows to indoor at last.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the mode of air inlet below, side air-out need reserve air intake and air outlet respectively on the bottom plate of air purifier's casing and curb plate, and the installation receives the limitation and influences the fitment effect. And, the air duct design is adopted, so that the cost of the air purifier is increased.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air purifier, which solves the problems that the decoration effect of the air purifier is influenced by the design of an air inlet/outlet and the design cost of an air duct is high.

In some embodiments, the air purifier comprises:

the air inlet and the air outlet are arranged on the same side plate of the shell;

the purification component is arranged in the shell and is positioned at the air outlet or the air inlet;

the fan assembly is arranged in the shell and comprises one or more centrifugal fans; the axis of the impeller of the centrifugal fan is vertical or parallel to the bottom plate of the shell, and the air outlet of the centrifugal fan faces the air outlet.

Optionally, the purification assembly comprises:

and the air filter covers the air outlet or the air inlet.

Optionally, the air filter is configured in a U shape, and an opening of the U shape faces the air outlet or the air inlet.

Optionally, the air filter comprises a HEPA filter, a glass fiber filter, an electrostatic filter, or an activated carbon fiber filter.

Optionally, one air inlet and two air outlets are arranged on the same side plate of the casing, and the two air outlets are respectively located at two sides of the air inlet;

the fan subassembly includes two centrifugal fan, and two centrifugal fan's air exit is two respectively the air outlet.

Optionally, the centrifugal fan includes:

a volute defining a volute air duct, the impeller being located within the volute air duct; and the first end of the volute air duct is an air suction port of the centrifugal fan, and the second end of the volute air duct is an air outlet of the centrifugal fan.

Optionally, a flange is disposed around the second end of the volute air duct, the flange may be fixed to the inner wall of the casing by using a bolt fastener, and the air outlet corresponds to the air outlet.

Optionally, the centrifugal fan further comprises:

the motor is arranged below the impeller, and a driving shaft of the motor penetrates through the impeller;

and the motor base is arranged below the motor and used for supporting the motor and the volute.

Optionally, the motor base includes:

the base is fixed at the bottom of the shell and used for supporting the motor;

one or more supports are arranged on the upper plate surface of the base and used for supporting the volute.

Optionally, the fan assembly further comprises:

a partition for fixing the volute.

The air purifier that this disclosed embodiment provided can realize following technological effect:

the air inlet and the air outlet are both arranged on the same side plate of the machine shell, so that the air inlet and the air outlet are prevented from being arranged on different side plates to influence the indoor decoration effect. The air purifier has the advantages that the purification assembly and the fan assembly are arranged in the air inlet or the air outlet, and the axis of the impeller of the centrifugal fan is perpendicular to or parallel to the bottom plate of the casing. The reasonable layout can save the installation space in the machine shell. Centrifugal fan's air exit need not to use supplementary wind channel towards the air outlet, and centrifugal fan blows in the air in the casing from the air outlet of casing indoor through the air exit, has reduced air purifier's manufacturing cost.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic diagram of an air purifier provided by an embodiment of the present disclosure;

FIG. 2 is a schematic view of a centrifugal fan layout provided by an embodiment of the present disclosure;

FIG. 3 is a schematic view of another centrifugal fan configuration provided by embodiments of the present disclosure;

fig. 4 is a schematic structural diagram of a motor base provided in an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a centrifugal fan provided in an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a separator provided by an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another motor mount provided in the embodiments of the present disclosure;

fig. 8 is a schematic structural diagram of another motor mount according to an embodiment of the present disclosure.

Reference numerals:

100: a housing; 110: a front side plate; 111: an air inlet; 112: an air outlet; 120: a base plate;

200: a centrifugal fan; 210: an impeller; 220: a volute; 221: an air suction opening; 222: an air outlet; 223: a flange; 224: a hook; 230: a single-shaft motor; 240: a double output shaft motor; 250: a motor base; 251: a support;

300: a partition plate; 310: an installation port; 311: a bayonet;

400: an air filter.

Detailed Description

So that the manner in which the features and advantages of the embodiments of the present disclosure can be understood in detail, a more particular description of the embodiments of the disclosure, briefly summarized above, may be had by reference to the appended drawings, which are included to illustrate, but are not intended to limit the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the devices, elements or components indicated to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides orientation or position, for example, the term "on" may also be used to indicate some kind of attachment or connection in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

As shown in connection with fig. 1-8, embodiments of the present disclosure provide an air purifier including a cabinet 100, a purification assembly, and a fan assembly. Wherein, the same side plate of the casing 100 is provided with an air inlet 111 and an air outlet 112; the purifying component is disposed in the casing 100, and the purifying component is located at the air outlet 112 or the air inlet 111; the fan assembly is arranged in the casing 100 and comprises one or more centrifugal fans 200; the axis of the impeller 210 of the centrifugal fan 200 is perpendicular or parallel to the bottom plate 120 of the casing 100, and the air outlet 222 of the centrifugal fan 200 faces the air outlet 112.

By adopting the air purifier provided by the embodiment of the disclosure, the air inlet 111 and the air outlet 112 are both arranged on the same side plate of the casing 100, so that the air inlet 111 and the air outlet 112 are prevented from being arranged on different side plates to influence the indoor decoration effect. The air purifier adopts a layout mode that the purification component and the fan component are arranged at the air inlet 111 or the air outlet 112, and the axis of the impeller 210 of the centrifugal fan 200 is vertical to or parallel to the bottom plate 120 of the casing 100. The air outlet 222 of the centrifugal fan 200 faces the air outlet 112, and an auxiliary air duct is not needed, so that the centrifugal fan 200 blows air in the cabinet 100 into the room from the air outlet 112 of the cabinet 100 through the air outlet 222, and the manufacturing cost of the air purifier is reduced.

Optionally, the purification assembly comprises an air filter 400, and the air filter 400 covers the air outlet 112 or the air inlet 111. If the air filter 400 is disposed at the air inlet 111, the air is filtered and purified by the air filter 400 when entering the casing 100 from the air inlet 111; if the air filter 400 is provided at the outlet 112, the air is filtered and purified by the air filter 400 when the air is blown into the room from the outlet 112.

Alternatively, the air filter 400 is configured in a U shape, and the opening of the U shape faces the air outlet 112 or the air inlet 111. Thus, the U-shaped air cleaner 400 can increase the cleaning area and improve the cleaning efficiency of the air cleaner.

Alternatively, the air filter 400 is configured to be plate-shaped, and the plate surface thereof is parallel to the plane of the air outlet 112 or the air inlet 111. Thus, the installation space in the cabinet 100 can be saved by using the plate-shaped air filter 400 parallel to the plane of the outlet 112 or the inlet 111.

Alternatively, the air filter 400 is configured in a plate shape, and the plate surface thereof is inclined to the plane of the air outlet 112 or the air inlet 111. Compared with the plate-shaped air filter 400 parallel to the plane of the air outlet 112 or the air inlet 111, the plate-shaped air filter 400 inclined to the plane of the air outlet 112 or the air inlet 111 can increase the purification area and improve the purification efficiency of the air purifier.

Alternatively, types of air filters 400 include, but are not limited to, HEPA filters (high efficiency air filter 400), fiberglass filters, electrostatic filters, activated carbon fiber filters. Among them, the HEPA filter has a removal efficiency of not less than a few% for particles having a diameter of not less than a micron, and is the most effective filtering medium for contaminants such as smoke, dust, and bacteria. The glass fiber filter adopts glass fiber filter paper as a material, and the material has the advantages of multiple types, good insulativity, high strength, good heat resistance and strong corrosion resistance, and has the defects of brittle material and non-wear resistance. The electrostatic filter charges particles using a high-voltage electrostatic field, and then the particles are trapped by a dust collecting plate. The inside of the filtering material of the activated carbon fiber filter has a strong loose porous structure and strong adsorbability, and has good adsorption and killing performance on toxic, harmful and peculiar smell gases and bacteria in the air.

Alternatively, as shown in fig. 1, the cabinet 100 of the air purifier is configured in a rectangular parallelepiped shape, and a ceiling installation manner is adopted, and the bottom plate 120 of the cabinet 100 is horizontally disposed, and one side plate of the cabinet 100 faces the indoor and is referred to as a front side plate 110. The air inlet 111 and the air outlet 112 of the casing 100 are both arranged on the front side plate 110, so that other side plates of the casing 100, the bottom plate 120 and the top plate can be attached to a wall or a cabinet body according to decoration requirements, the effect of hiding the air purifier is achieved, and the decoration effect is improved.

Optionally, the fan assembly comprises a plurality of centrifugal fans 200, the axes of the impellers 210 of the plurality of centrifugal fans 200 are parallel to the bottom plate 120 of the casing 100, and the axes of the impellers 210 of the plurality of centrifugal fans 200 are coaxially arranged. Like this a plurality of centrifugal fan 200's impeller 210 coaxial setting can save the installation space in casing 100 through rationally the overall arrangement to can make air purifier realize better air supply effect.

Optionally, centrifugal fan 200 includes a single-shaft motor 230 or a dual-shaft motor 240.

Illustratively, centrifugal fan 200 includes a single-shaft motor 230, the single-shaft motor 230 having a drive shaft with an impeller 210 disposed therethrough. The fan assembly includes two centrifugal fans 200, the air outlets 222 of the two centrifugal fans 200 face the two air outlets 112 of the casing 100, and the driving shafts of the two centrifugal fans 200 are coaxially arranged, so that the two impellers 210 are coaxially arranged.

As still another example, as shown in fig. 2, the centrifugal fan 200 includes a dual output shaft motor 240, and the dual output shaft motor 240 has two driving shafts, and each driving shaft is penetrated by one impeller 210. The fan assembly comprises two centrifugal fans 200, the air outlets 222 of the two centrifugal fans 200 face the two air outlets 112 of the casing 100 respectively, and the driving shafts of the two centrifugal fans 200 are coaxially arranged, so that the four impellers 210 are coaxially arranged.

Optionally, as shown in fig. 4, 5 and 6, the centrifugal fan 200 further includes a volute 220, and the fan assembly further includes a partition 300. The volute 220 defines a volute duct within which the impeller 210 is located; moreover, the first end of the volute air duct is an air suction port 221 of the centrifugal fan 200, and the second end of the volute air duct is an air exhaust port 222 of the centrifugal fan 200; the partition 300 is provided with a mounting opening 310; the scroll 220 is located at one side of the partition 300, the second end of the scroll duct is mounted on the partition 300, and the exhaust port 222 corresponds to the mounting port 310. In this way, the volute 220 can be effectively fixed by the partition 300. Indoor air enters the casing 100 from the air inlet 111, and when the impeller 210 rotates, air in the casing 100 is sucked into the volute air duct from the air inlet 221 by centrifugal force, and is compressed and then blown to the air outlet 112 of the casing 100 from the air outlet 222, and finally enters the indoor space.

Illustratively, the fan assembly includes two centrifugal fans 200, the centrifugal fan 200 includes a single-shaft motor 230, the single-shaft motor 230 has a driving shaft and the driving shaft is provided with an impeller 210, and the impeller 210 is correspondingly provided with a volute 220. The two partition plates 300 are respectively arranged corresponding to the two air outlets 112, each partition plate 300 is provided with a mounting opening 310, the volute 220 of each centrifugal fan 200 is mounted on one partition plate 300, and the air outlet 222 corresponds to the mounting opening 310.

In another exemplary embodiment, the fan assembly includes four centrifugal fans 200, the centrifugal fans 200 include a single-shaft motor 230, the single-shaft motor 230 has a driving shaft and the driving shaft is provided with an impeller 210, and the impeller 210 is correspondingly provided with a volute 220. The two partition plates 300 are respectively arranged corresponding to the two air outlets 112, each partition plate 300 is provided with two mounting ports 310, the volutes 220 of every two centrifugal fans 200 are mounted on the same partition plate 300, and the air outlets 222 are in one-to-one correspondence with the mounting ports 310.

Still another exemplary embodiment, the fan assembly includes two centrifugal fans 200, the centrifugal fan 200 includes a dual-output-shaft motor 240, the dual-output-shaft motor 240 has two driving shafts and is respectively provided with one impeller 210, and each impeller 210 is correspondingly provided with one volute 220. The two partition plates 300 are respectively arranged corresponding to the two air outlets 112, each partition plate 300 is provided with two mounting ports 310, the two volutes 220 of each centrifugal fan 200 are mounted on the same partition plate 300, and the air outlets 222 are in one-to-one correspondence with the mounting ports 310.

Optionally, a first air speed sensor is arranged at the air suction port 221 of the centrifugal fan 200, and the first air speed sensor is used for detecting the air volume entering the volute air duct; the air outlet 222 of the centrifugal fan 200 is provided with a second air speed sensor for detecting the air volume discharged from the volute air duct. The first air speed sensor and the second air speed sensor are electrically connected to a controller of the air purifier, and the air inlet volume and the air outlet volume of the centrifugal fan 200 correspond to the mode of the air purifier. When the air purifier operates in a certain mode, if the first air speed sensor detects that the air inlet volume does not accord with the air inlet volume corresponding to the mode, or the second air speed sensor detects that the air outlet volume does not accord with the air outlet volume corresponding to the mode, the controller sends out a maintenance prompt to a user.

Optionally, the axis of the impeller 210 of the centrifugal fan 200 is disposed parallel to the bottom plate 120 of the casing 100, and the centrifugal fan 200 further includes a motor base 250. The motor base 250 is disposed on the partition 300 and corresponds to the single-shaft motor 230 or the dual-shaft motor 240 for installing and fixing the single-shaft motor 230 or the dual-shaft motor 240, as shown in fig. 4. Thus, the scroll casing 220 and the motor mount 250 are mounted on the partition 300.

Optionally, the end of the second end of the volute air duct extends out of the mounting opening 310 of the partition 300. The side wall of the second end of the volute air duct abuts against the inner wall of the mounting opening 310, so that the mounting opening 310 has a certain limiting effect on the air duct volute 220, the volute 220 is prevented from shaking, and the connection stability between the volute 220 and the partition plate 300 is improved.

Optionally, a flange 223 is disposed around the second end of the volute air duct, and corresponding bolt holes are disposed on the flange 223 and the partition 300. The flange 223 may be fixed to the partition 300 using bolt fasteners fitted to the bolt holes.

Optionally, a plate rib is arranged at the joint of the flange 223 and the volute 220. The flange 223 is supported and protected by the plate ribs, so that the flange is prevented from deforming, and the connection strength between the flange 223 and the volute 220 is improved.

Optionally, the periphery of the second end of the volute air channel is provided with a hook 224, and the periphery of the mounting opening 310 of the partition plate 300 is provided with a bayonet 311. The hook 224 corresponds to the bayonet 311, and the volute 220 can be fixed to the partition 300 by engaging the hook 224 with the bayonet 311.

Optionally, the volute 220 includes an upper housing and a lower housing. The lower shell is detachably connected to the upper shell, and the volute air channel is defined by the upper shell and the lower shell after the upper shell and the lower shell are connected. After the upper and lower shells are disassembled, the components in the volute 220 can be conveniently overhauled.

Optionally, the partition 300 is disposed at the air outlet 112, and an air outlet direction of the air outlet 222 of the centrifugal fan 200 is perpendicular to a plane where the air outlet 112 of the casing 100 is located, as shown in the layout manners shown in fig. 2 and fig. 3. The partition 300 is disposed at the air outlet 112 and the air outlet direction of the air outlet 222 is perpendicular to the air outlet 112, so that the distance between the air outlet 222 of the centrifugal fan 200 and the air outlet 112 of the casing 100 can be shortened, and an auxiliary air duct is not required to be designed to guide the air from the air outlet 222 to the air outlet 112, so that the air in the casing 100 is quickly blown into the room through the air outlet 112 by the centrifugal fan 200, and the air outlet effect of the air purifier is improved.

Alternatively, the axis of the impeller 210 of the centrifugal fan 200 is perpendicular to the bottom plate 120 of the casing 100, and the centrifugal fan 200 is installed in a lying manner. Centrifugal fan 200 includes a single-shaft motor 230 and a motor mount 250. As shown in fig. 7, the single-shaft motor 230 is disposed below the impeller 210, the driving shaft penetrates the impeller 210, and the motor base 250 is disposed below the single-shaft motor 230 and fixed to the bottom plate 120 of the cabinet 100. The motor base 250 includes a base and a plurality of brackets 251, the brackets 251 are disposed on an upper surface of the base, and the number of the brackets 251 is one or more. The single-shaft motor 230 is fixed through the base of the motor base 250, and the volute 220 is supported through the bracket 251, so that the centrifugal fan 200 is more stable.

Alternatively, the axis of the impeller 210 of the centrifugal fan 200 is disposed perpendicular to the bottom plate 120 of the casing 100, and the centrifugal fan 200 includes a single-shaft motor 230 and a motor mount 250. As shown in fig. 8, the single-shaft motor 230 is disposed above the impeller 210, the driving shaft penetrates through the impeller 210, the motor base 250 is disposed above the single-shaft motor 230 and fixed on the top plate of the casing 100, and the motor base 250 is used for fixing the single-shaft motor 230. This lifts the single-shaft motor 230 by the motor mount 250.

Optionally, a heat exchange assembly is disposed at the air inlet 111, and a heat exchange assembly is disposed at the air outlet 112. The heat exchange assembly comprises a heat exchanger. The heat exchange component is used for exchanging heat with the air in the way, and the purification component is used for purifying the air in the way. The air enters the casing 100 from the air inlet 111 and exchanges heat with the heat exchange assembly, and the air in the casing 100 enters the room from the air outlet 112 and is purified by the purification assembly, so that the air purifier can also play a role in cooling/heating.

Optionally, the air outlet 112 is provided with a purification assembly, and the air inlet 111 is provided with a heat exchange assembly. The heat exchange assembly comprises a heat exchanger. The heat exchange component is used for exchanging heat with the air in the way, and the purification component is used for purifying the air in the way. Indoor air is purified by the purifying component when entering the casing 100 from the air inlet 111, and the air in the casing 100 exchanges heat with the heat exchange component when entering the room from the air outlet 112, so that the air purifier can also play a role in cooling/heating.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. An air purifier, comprising:

the air conditioner comprises a shell (100), wherein an air inlet (111) and an air outlet (112) are formed in the same side plate of the shell;

the purification assembly is arranged in the machine shell (100) and is positioned at the air outlet (112) or the air inlet (111);

a fan assembly, disposed within the enclosure (100), comprising one or more centrifugal fans (200); the axial line of the impeller (210) of the centrifugal fan (200) is vertical or parallel to the bottom plate (120) of the casing (100), and the air outlet (222) of the centrifugal fan (200) faces the air outlet (112).

2. The air purifier of claim 1, wherein the purification assembly comprises:

and an air filter (400) covering the air outlet (112) or the air inlet (111).

3. The air purifier of claim 2,

the air filter (400) is designed in a U-shape, and the opening of the U-shape faces the air outlet opening (112) or the air inlet opening (111).

4. The air purifier of claim 2,

the air filter (400) comprises a HEPA filter, a glass fiber filter, an electrostatic filter, or an activated carbon fiber filter.

5. The air purifier of any one of claims 1 to 3,

one air inlet (111) and two air outlets (112) are arranged on the same side plate of the casing (100), and the two air outlets (112) are respectively positioned on two sides of the air inlet (111);

the fan assembly comprises two centrifugal fans (200), and air outlets (222) of the two centrifugal fans (200) face the two air outlets (112) respectively.

6. The air cleaner according to any one of claims 1-3, wherein the centrifugal fan (200) comprises:

a volute (220) defining a volute air path, the impeller (210) being located within the volute air path; and the first end of the volute air duct is an air suction opening (221) of the centrifugal fan (200), and the second end of the volute air duct is an air exhaust opening (222) of the centrifugal fan (200).

7. The air purifier of claim 6,

the periphery of the second end of the volute air duct is provided with a flange (223), the flange (223) can be fixed on the inner wall of the machine shell (100) through a bolt fastener, and the air outlet (222) corresponds to the air outlet (112).

8. The air purifier according to claim 6, wherein the centrifugal fan (200) further comprises:

the motor is arranged below the impeller (210), and the driving shaft of the motor penetrates through the impeller (210);

the motor base (250) is arranged below the motor and used for supporting the motor and the volute (220).

9. The air cleaner of claim 8, wherein the motor mount (250) comprises:

the base is fixed at the bottom of the shell (100) and used for supporting the motor;

one or more brackets (251) are arranged on the upper plate surface of the base and used for supporting the volute (220).

10. The air purifier of claim 6, wherein the fan assembly further comprises:

a partition (300) to secure the volute (220).

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