CN114811925A

CN114811925A - Air purifier

Info

Publication number: CN114811925A
Application number: CN202210269608.9A
Authority: CN
Inventors: 张吉义; 张继通; 张中晓; 蔡艳芳; 徐雪峰
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-07-29

Abstract

The application relates to the technical field, discloses an air purifier, includes: the shell is provided with an air outlet and an air inlet; 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; the air duct assembly is arranged in the shell and comprises an air duct side wall; the side wall of the air duct is constructed with a curved surface, and the curved surface is fitted with the steepest curve; the fan assembly and the air outlet are located on the same side of the curved surface, and the air outlet direction of the fan assembly faces the side wall of the air duct, so that the air outlet of the fan assembly circulates towards the air outlet along the curved surface. Because the side wall of the air duct is provided with the curved surface which is matched with the steepest curve, the air outlet efficiency of the air purifier is improved, and the air outlet is more uniform.

Description

Air purifier

Technical Field

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

Background

An air purifier is also called an air cleaner, an air freshener and an air purifier, and is a product capable of adsorbing, decomposing or converting various air pollutants (generally including PM2.5, dust, pollen, peculiar smell, formaldehyde and other decoration pollution, bacteria, allergen and the like) and effectively improving the air cleanliness, and is widely applied to occasions 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's air duct assembly generally adopts the pipeline formula wind channel in the correlation technique, and air pipe's head end communicates in the fan, and end-to-end connection is in the air outlet of tuber pipe machine to guide the air-out of fan to the air outlet, and then insufflate indoor.

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 air outlet speed of the pipeline type air duct is low, and the blown air is not uniform due to pressure loss when the air circulates in the ventilation duct.

Disclosure of Invention

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 nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air purifier, which solves the problems of slow and uneven air outlet rate of an air duct assembly.

In some embodiments, the air purifier comprises:

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

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;

the air duct assembly is arranged in the shell and comprises an air duct side wall; the side wall of the air duct is constructed with a curved surface, and the curved surface is fitted with the steepest curve;

the fan assembly and the air outlet are located on the same side of the curved surface, and the air outlet direction of the fan assembly faces the side wall of the air duct, so that the air outlet of the fan assembly circulates towards the air outlet along the curved surface.

Optionally, the projection of the curved surface on the plane where the air outlet of the fan assembly is located covers the air outlet.

Optionally, the projection of the curved surface on the plane where the air outlet of the housing is located covers the air outlet.

Optionally, the side wall of the air duct is configured with two curved surfaces, and the two curved surfaces are adjacent to each other.

Optionally, the projection of the two curved surfaces on the plane where the air outlet of the fan assembly is located covers the air outlet.

Optionally, the projection of the two curved surfaces on the plane where the air outlet of the housing is located covers the air outlet.

Optionally, the air outlet and the air inlet are arranged on the same side plate of the casing.

Optionally, the fan assembly includes a centrifugal fan, the centrifugal fan including:

and the axis of the impeller is parallel or vertical to the bottom plate of the casing.

Optionally, the purification assembly comprises:

and the air filter covers 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.

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

indoor air enters the shell from the air inlet, and under the blowing action of the fan assembly, air in the shell circulates towards the air outlet along the side wall of the air duct and finally blows into the room. Because the wind channel lateral wall constructs the curved surface that has the fitting mutually with the fastest curve, when the air-out of fan subassembly circulated to the air outlet along the curved surface, compare in circulating along other routes between fan subassembly and the air outlet, the air can blow to the air outlet fast, has improved air purifier's air-out speed. Moreover, the fan assembly blows air at different positions on the curved surface at the same time, and the air can be circulated to the tail end of the curved surface at the same time, so that the air outlet of the air duct side wall is more uniform.

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 view of a duct sidewall provided by an embodiment of the present disclosure;

FIG. 5 is a schematic view of a symmetrically arranged air chute side wall provided by embodiments of the present disclosure;

fig. 6 is a schematic structural diagram of a motor base provided in an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a centrifugal fan provided in an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a separator provided by an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of another motor base provided in the embodiment of the present disclosure.

Reference numerals are as follows:

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; 260: a side wall of the air duct; 261: a first curved surface; 262: a second curved surface;

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 elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. 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 may be understood as specific cases by those of ordinary skill in the art.

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 fig. 1-9, embodiments of the present disclosure provide an air purifier including a housing 100, a purification assembly, a fan assembly, and an air duct assembly. Wherein, the casing 100 is provided with an air outlet 112 and an air inlet 111; the purifying assembly is disposed in the casing 100, and the purifying assembly is located at the air outlet 112 or the air inlet 111; the fan assembly is disposed in the casing 100; the air duct assembly is disposed in the casing 100 and includes an air duct sidewall 260; the side wall 260 of the air duct is constructed with a curved surface, and the curved surface is fitted with the steepest curve; the fan assembly and the air outlet 112 are both located on the same side of the curved surface, and the air outlet direction of the fan assembly faces the air duct side wall 260, so that the air outlet of the fan assembly circulates to the air outlet 112 along the curved surface.

The line segment between the two points is shortest, but the path with the fastest speed between the two points is a curve. For example, on an inclined plane, two tracks are arranged, one is a straight line and the other is a curve, and the heights of the starting point and the ending point are the same. Two small balls with the same mass and size slide down from the starting point at the same time, and the small ball of the curve arrives at the end point first instead. And the fastest curve among the many curves may be the one that will end up with the fastest ball. The steepest curve is a cycloid, which means a trajectory formed by a fixed point on a circle when the circle moves along a straight line. And the objects with different initial coordinates slide downwards on the same steepest curve, and can reach the terminal point at the same time. The surface to which the steepest curve fits is referred to herein as the steepest surface.

With the air purifier provided by the embodiment of the present disclosure, indoor air enters the casing 100 from the air inlet 111, and under the blowing action of the fan assembly, the air in the casing 100 circulates to the air outlet 112 along the air duct side wall 260, and finally blows into the room. Because the air duct side wall 260 is configured with the curved surface fitting the steepest curve, when the air outlet of the fan assembly circulates to the air outlet 112 along the steepest curved surface, compared with the circulation along other paths between the fan assembly and the air outlet 112, the air can be blown to the air outlet 112 quickly, and the air outlet rate of the air purifier is improved. Moreover, the fan assembly blows air at different positions on the steepest curved surface at the same time, and the air can be simultaneously circulated to the tail end of the steepest curved surface, so that the air outlet of the air duct side wall 260 is more uniform.

Optionally, the projection of the steepest curved surface on the plane where the air outlet 222 of the fan assembly is located covers the air outlet 222, so that the outlet air of the fan assembly is blown onto the steepest curved surface.

Optionally, a projection of the steepest curved surface on a plane where the air outlet 112 of the casing 100 is located covers the air outlet 112, so that the air circulating along the steepest curved surface is blown out from the air outlet 112 to the room.

In some embodiments, the purification assembly includes 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 through 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 in a plate shape, 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.

In some embodiments, the duct sidewall 260 is configured with two curved surfaces that are adjacent, and both curved surfaces are the fastest curved surfaces; the fan assembly and the air outlet 112 are located on the same side of the two curved surfaces, and the air outlet direction of the fan assembly faces the air duct side wall 260, so that the air outlet of the fan assembly blows towards the air outlet 112 along the two curved surfaces.

Optionally, the two adjacent curved surfaces are respectively referred to as a first curved surface 261 and a second curved surface 262, where the first curved surface 261 is close to the fan assembly, the second curved surface 262 is close to the air outlet 112, and a tangent line at the end of the first curved surface 261 intersects with the second curved surface 262. The fan subassembly is bloied to first curved surface 261, and on the whole air-out of fan subassembly fell on first curved surface 261 promptly, when the air current leads to the end of first curved surface 261, the air had two circulation directions: the first is vertically facing the air outlet 112, and the second is along the tangent of the end of the first curved surface 261. Then, the air circulating along the tangent line of the end of the first curved surface 261 blows toward the second curved surface 262, and when the air circulates to the end of the second curved surface 262, the air has two circulation directions: the first is vertically facing the air outlet 112, and the second is along the tangent of the end of the second curved surface 262. It can be seen that when air circulates on the two sections of curved surfaces, part of the air is discharged towards the air outlet 112 vertically, so that the air is discharged uniformly. And the air duct side wall 260 is configured with two adjacent curved surfaces, compared with the case that one curved surface is used for guiding the fan assembly to discharge air to the air outlet 112, because the air circulating along the tangent line of the end of the first curved surface 261 is continuously guided by the second curved surface 262, the air is buffered and circulates along two directions at the end of the second curved surface 262, and therefore the noise generated by the air wake flow at the end of the second curved surface 262 is very small. Under the condition that the fan assembly blows air to the first curved surface 261 and the second curved surface 262 simultaneously, namely the air outlet of the fan assembly falls on the first curved surface 261 and the second curved surface 262 simultaneously, the effects of uniform air outlet and low noise are achieved.

Optionally, as shown in fig. 4, a joint of the first curved surface 261 and the second curved surface 262 is provided with a rounded corner. In the case where the tangent to the end of the first curved surface 261 does not intersect the second curved surface 262, when the air flows to the end of the first curved surface 261, the air has two flowing directions: first, the air outlet 112 is vertically faced, and second, the air flows to the second curved surface 262 along the circular angle. Thus, the air that has passed through the rounded corners and led the first curved surface 261 can be guided to flow toward the second curved surface 262.

Optionally, the projection of the adjacent first curved surface 261 and second curved surface 262 on the plane where the air outlet 222 of the fan assembly is located covers the air outlet 222, so that the air outlet of the fan assembly is blown on at least one of the fastest curved surfaces.

Optionally, the projection of the adjacent first curved surface 261 and second curved surface 262 on the plane where the air outlet 112 of the casing 100 is located covers the air outlet 112, so that the air circulating along the two fastest curved surfaces is blown out from the air outlet 112 to the room.

Optionally, the first curved surface 261 is a concave surface, and the second curved surface 262 is a convex surface. The first curved surface 261 shown in fig. 4 is an inward concave surface, and the second curved surface 262 protrudes in a direction opposite to the convex direction of the first curved surface 261 (not shown). The fan assembly blows air towards the air duct side wall 260, and because the second curved surface 262 is an outer convex surface, compared with an inner concave type windward surface, the outer convex type windward surface breaks the wall attachment effect of the air more easily, the phenomenon that the air advances along the air duct is weakened, the air redirection effect of the air blown to the outer convex type air duct is accelerated, and the uniformity of the air outlet 112 is improved. Meanwhile, the rear end of the concave first curved surface 261 is connected with the convex second curved surface 262, and the wall attachment effect of the wind at the rear end of the first curved surface 261 is broken, so that the wind blows towards the heat exchange assembly, and the wind outlet uniformity of the air outlet 112 is improved. In addition, in this embodiment, the air outlet efficiency and the air outlet uniformity can be effectively improved when the first curved surface 261 is the fastest curved surface.

In some embodiments, as shown in fig. 1, the cabinet 100 of the air purifier is constructed in a rectangular parallelepiped shape in a ceiling installation manner, 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 centrifugal fan 200, the centrifugal fan 200 comprising an impeller 210, the axis of the impeller 210 being parallel or perpendicular to the base plate 120 of the casing 100.

Alternatively, as shown in fig. 2 and 3, the front side plate 110 of the casing 100 is provided with an air outlet 112 and two air inlets 111, and the two air inlets 111 are respectively located at two sides of the air outlet 112. The fan assembly comprises two centrifugal fans 200, wherein the suction ports 221 of the two centrifugal fans 200 are respectively arranged at the two air inlets 111, and the air outlets 222 of the two centrifugal fans 200 are oppositely arranged. The two air duct sidewalls 260 are symmetrically disposed between the two centrifugal fans 200, and the air outlet 222 of each centrifugal fan 200 faces one air duct sidewall 260, and is used for guiding the air outlet of the two centrifugal fans 200 to flow to the air outlet 112. The two adjacent curved surfaces of the air duct sidewall 260 are respectively referred to as a first curved surface 261 and a second curved surface 262, wherein the first curved surface 261 is close to the fan assembly, and the second curved surface 262 is close to the air outlet 112. The ends of the second curved surfaces 262 of the two duct sidewalls 260 are connected.

In the above embodiment, the air outlets 222 of the two centrifugal fans 200 are arranged oppositely, and the two air duct sidewalls 260 are symmetrically arranged between the two centrifugal fans 200. It can be seen that it is difficult to use a conventional ducted air duct where the air outlet 112 is long. The reason is that the conventional duct-type air duct needs to be connected to the air outlet 222 of the centrifugal fan 200 and the air outlet 112 of the casing 100 through two ends of the air duct, and the size of the port of the air duct is limited, which makes it difficult to adapt to the longer air outlet 112. The invention only needs to arrange two symmetrical air duct side walls 260 shown in fig. 5, and compared with the traditional pipeline type air duct, the invention has the advantage of reducing the manufacturing cost.

In the above embodiment, the ends of the second curved surfaces 262 of the two air duct sidewalls 260 are connected. The air discharged from the air outlet 222 of each centrifugal fan 200 uniformly flows to the air outlet 112 along the two adjacent curved surfaces of the corresponding air duct sidewall 260, and the air discharged from the air outlets 222 of the two centrifugal fans 200 flows to the end of the second curved surface 262 along the tangent line of the end of the corresponding curved surface. Because the two air duct sidewalls 260 are symmetrical and the ends of the two second curved surfaces 262 are connected, after the two portions of air meet each other, the two portions of air originally circulating along the tangent line of the end of the corresponding second curved surface 262 vertically circulate toward the air outlet 112, so that the air outlet at the joint of the two second curved surfaces 262 is more uniform, as shown in fig. 5.

In some embodiments, as shown in FIG. 6, centrifugal fan 200 further comprises a volute 220, and the fan assembly further comprises a baffle 300. The volute 220 defines a volute air duct, the impeller 210 being located within the volute air duct; 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 volute 220 is located at one side of the partition 300, the second end of the volute duct is mounted on the partition 300, and the exhaust port 222 corresponds to the mounting port 310, while the exhaust port 222 faces the duct sidewall 260. 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, the impeller 210 sucks the air in the casing 100 into the volute air duct from the air suction opening 221 through centrifugal force when rotating, and blows the air to the air duct side wall 260 from the air discharge opening 222 after being compressed, and finally the air circulates to the air outlet 112 of the casing 100 along the two steepest curved surfaces of the air duct side wall 260 and is uniformly blown into the indoor space.

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 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, 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, and the connection strength between the flange 223 and the volute 220 is improved.

Optionally, as shown in fig. 7 and 8, a hook 224 is disposed on the periphery of the second end of the volute duct, and a bayonet 311 is disposed on the periphery of the mounting opening 310 of the partition 300. 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 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 single-shaft motor 230 and a motor base 250. The motor mount 250 is disposed on the partition 300 and corresponds to the single-shaft motor 230 for mounting and fixing the single-shaft motor 230. Thus, both the volute 220 and the motor mount 250 are mounted on the partition 300.

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 dual-output shaft motor 240 and a motor base 250. The motor base 250 is disposed on the partition 300 and corresponds to the dual output shaft motor 240 for installing and fixing the dual output shaft motor 240. Thus, both the volute 220 and the motor mount 250 are mounted on the partition 300.

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. The centrifugal fan 200 includes a single-shaft motor 230 and a motor mount 250, as shown in fig. 9, the single-shaft motor 230 is disposed below the impeller 210 and the driving shaft penetrates the impeller 210, and the motor mount 250 is disposed below the single-shaft motor 230 and fixed to the bottom plate 120 of the casing 100. The upper surface of motor holder 250 is provided with a plurality of holders 251. Therefore, the single-shaft motor 230 is fixed through the motor base 250, and the volute 220 is supported through the support 251, so that the centrifugal fan 200 is more stable.

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 single-shaft motor 230 and motor cabinet 250, and single-shaft motor 230 sets up in the top of impeller 210 and the drive shaft wears to locate impeller 210, and motor cabinet 250 sets up in single-shaft motor 230 top and is fixed in on the roof of casing 100, and motor cabinet 250 is used for fixed single-shaft motor 230. Thus, the single-shaft motor 230 is hoisted by the motor mount 250.

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

1. An air purifier, comprising:

the machine shell (100) is provided with an air outlet (112) and an air inlet (111);

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);

the air duct assembly is arranged in the shell (100) and comprises an air duct side wall (260); the air duct side wall (260) is constructed with a curved surface, and the curved surface is fitted with the steepest curve;

the fan assembly and the air outlet (112) are located on the same side of the curved surface, and the air outlet direction of the fan assembly faces the air duct side wall (260), so that the air outlet of the fan assembly circulates towards the air outlet (112) along the curved surface.

2. The air purifier of claim 1,

the projection of the curved surface on the plane where the air outlet (222) of the fan assembly is located covers the air outlet (222).

3. The air purifier of claim 1 or 2,

the projection of the curved surface on the plane where the air outlet (112) of the machine shell (100) is located covers the air outlet (112).

4. The air purifier of claim 1,

the air duct side wall (260) is configured with two curved surfaces, and the two curved surfaces are adjacent.

5. The air purifier of claim 4,

the projection of the two curved surfaces on the plane where the air outlet (222) of the fan assembly is located covers the air outlet (222).

6. The air purifier of claim 4 or 5,

the projection of the two curved surfaces on the plane where the air outlet (112) of the machine shell (100) is located covers the air outlet (112).

7. The air purifier of claim 1 or 2,

the air outlet (112) and the air inlet (111) are arranged on the same side plate of the machine shell (100).

8. The air purifier according to claim 1 or 2, wherein the fan assembly comprises a centrifugal fan (200), the centrifugal fan (200) comprising:

an impeller (210) having an axis parallel or perpendicular to a bottom plate (120) of the casing (100).

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

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

10. The air purifier of claim 9,

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