CN217235809U - Indoor unit and air conditioner - Google Patents

Abstract

The application relates to the technical field of air conditioners, and discloses an indoor unit, including: the air conditioner comprises a shell, a fan and a control device, wherein an air inlet and two air outlets are arranged on the same side plate of the shell, and the two air outlets are respectively positioned on two sides of the air inlet; the heat exchange assembly 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, each air outlet at least corresponds to one centrifugal fan, and the air outlet of each 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; an auxiliary air duct is not needed, and the manufacturing cost of the indoor unit is reduced. The application also discloses an air conditioner.

Description

Indoor unit and air conditioner

Technical Field

The application relates to the technical field of air conditioners, for example to an indoor unit and an air conditioner.

Background

The air duct type air conditioner is commonly called as an air duct type air conditioner, and the air duct type air conditioner adopts a one-to-one mode and comprises an outdoor unit and an indoor unit. When the indoor unit, the refrigerant pipeline, the drainage pipeline and the line pipeline are all hidden in the suspended ceiling. Therefore, compared with a wall-mounted air conditioner and a cabinet air conditioner, the air duct machine is more attractive and space-saving, and the installation position is more flexible.

The air duct machine in the related art generally adopts the mode of air inlet from the bottom and air outlet from the side, a centrifugal fan is arranged in the air duct machine, the air outlet of the centrifugal fan is guided to an air outlet of the air duct machine through an air duct, and finally the air outlet is blown to the 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 mode of air inlet below and air outlet from the side needs to reserve an air inlet and an air outlet on the bottom plate and the side plate of the casing of the air duct machine respectively, and the installation is limited and the decoration effect is influenced. And, the cost of the ducted air conditioner is increased by adopting the air duct design.

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 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 indoor unit and an air conditioner, and solves the problems that the decoration effect is influenced by the design of an air inlet/outlet of an air duct machine and the design cost of an air duct is high.

In some embodiments, the indoor unit includes:

the air conditioner comprises a shell, a fan and a control device, wherein an air inlet and two air outlets are arranged on the same side plate of the shell, and the two air outlets are respectively positioned on two sides of the air inlet;

the heat exchange assembly 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, each air outlet at least corresponds to one centrifugal fan, and the air outlet of each centrifugal fan faces the air outlet.

Optionally, the air outlet direction of the air outlet of the centrifugal fan is perpendicular to the plane where the air outlet of the casing is located.

Optionally, when the axes of the impellers of the plurality of centrifugal fans are parallel to the bottom plate of the casing, the axes of the impellers of the plurality of centrifugal fans are coaxially arranged.

Optionally, the heat exchange assembly includes:

and the heat exchanger covers the air outlet or the air inlet.

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

Optionally, the heat exchanger is configured to be plate-shaped, and a plate surface of the heat exchanger is parallel to a plane where the air outlet or the air inlet is located.

Optionally, the heat exchanger is configured to be plate-shaped, and a plate surface of the heat exchanger is inclined to a plane where the air outlet or the air inlet is located.

Optionally, an axis of an impeller of the centrifugal fan is perpendicular to the bottom plate of the casing, and the centrifugal fan includes:

the unipolar motor, hoist and mount in the top of impeller, just the drive shaft of unipolar motor wears to locate the impeller.

Optionally, the centrifugal fan further comprises:

the motor cabinet, set up in the top surface of casing is used for hoist and mount unipolar motor.

In some embodiments, the air conditioner includes the indoor unit described in any of the above embodiments.

The indoor unit and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

air intake and air outlet all set up on the same curb plate of casing, avoid air intake and air outlet setting to influence the effect of interior decoration on the curb plate of difference like this. The heat exchange assembly and the fan assembly of the indoor unit are arranged in a layout mode that the heat exchange assembly is arranged at 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. If the heat exchange assembly is arranged at the air inlet, indoor air enters the shell from the air inlet and exchanges heat with the heat exchange assembly, and the indoor unit is called an air suction type indoor unit. If the heat exchange assembly is arranged at the air outlet, the air in the shell exchanges heat with the heat exchange assembly when being blown into the room from the air outlet, and the indoor unit is called a blowing type indoor unit. The air outlet of the centrifugal fan faces the air outlet, an auxiliary air duct is not needed, the centrifugal fan blows air in the shell into the room from the air outlet of the shell through the air outlet, and the manufacturing cost of the indoor unit is reduced.

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 structural diagram of an indoor unit provided in 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 mount 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 an embodiment of the present disclosure;

fig. 8 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;

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

400: a heat exchanger.

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 embodiments, and are not intended to limit the indicated devices, elements or components 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 fig. 1-8, an indoor unit according to an embodiment of the present disclosure includes a casing 100, a heat exchange assembly, and a fan assembly. Wherein, the same side plate of the casing 100 is provided with an air inlet 111 and two air outlets 112, and the two air outlets 112 are respectively located at two sides of the air inlet 111; the heat exchange assembly is arranged in the casing 100, and the heat exchange assembly is located at the air outlet 112 or the air inlet 111; the fan assembly is arranged in the casing 100 and comprises a plurality of 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, each air outlet 112 corresponds to at least one centrifugal fan 200, and the air outlet 222 of the centrifugal fan 200 faces the air outlet 112.

With the indoor unit provided by the embodiment of the present disclosure, the air inlet 111 and the air outlet 112 are both disposed on the same side plate of the casing 100, so that the effect of the indoor decoration that the air inlet 111 and the air outlet 112 are disposed on different side plates is prevented from being affected. The heat exchange assembly and the fan assembly of the indoor unit are disposed in a manner that the heat exchange assembly is disposed at the air inlet 111 or the air outlet 112, and an axis of the impeller 210 of the centrifugal fan 200 is perpendicular to or parallel to the bottom plate 120 of the casing 100. If the heat exchange assembly is disposed at the air inlet 111, the indoor air enters the casing 100 from the air inlet 111 and exchanges heat with the heat exchange assembly, and the indoor unit is called an air suction type indoor unit. If the heat exchange assembly is disposed at the air outlet 112, the air in the casing 100 exchanges heat with the heat exchange assembly when being blown into the room from the air outlet 112, and at this time, the indoor unit is called a blowing type indoor unit. The air outlet 222 of the centrifugal fan 200 faces the air outlet 112, and the centrifugal fan 200 blows the air in the casing 100 into the room from the air outlet 112 of the casing 100 through the air outlet 222 without using an auxiliary air duct, thereby reducing the manufacturing cost of the indoor unit.

Alternatively, as shown in fig. 1, the cabinet 100 of the indoor unit 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, thereby achieving the effect of hiding an indoor unit and further improving decoration effect.

Alternatively, when the axes of the impellers 210 of the plurality of centrifugal fans 200 are parallel to the bottom plate 120 of the casing 100, the axes of the impellers 210 of the plurality of centrifugal fans 200 are coaxially disposed. In this way, the impellers 210 of the centrifugal fans 200 are coaxially arranged, so that the installation space in the casing 100 can be saved by reasonable layout, and the indoor unit can achieve a good air supply effect.

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

Illustratively, the centrifugal fan 200 includes a single-shaft motor 230, the single-shaft motor 230 having a driving shaft and the driving shaft being penetrated with an impeller 210. 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 provided with one impeller 210. 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 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 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 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 openings 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 openings 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 indoor unit, and the air inlet volume and the air outlet volume of the centrifugal fan 200 correspond to the mode of the indoor unit. When the indoor unit operates in a certain mode, if the first air speed sensor detects that the air inlet quantity does not accord with the air inlet quantity corresponding to the mode, or the second air speed sensor detects that the air outlet quantity does not accord with the air outlet quantity 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 peripheral edge of the second end of the volute air duct is provided with a hook 224, and the peripheral edge 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. Thus, 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 centrifugal fan 200 can rapidly blow the air in the casing 100 into the room through the air outlet 112, thereby improving the air outlet effect of the indoor unit.

Alternatively, as shown in fig. 3, 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, the single-shaft motor 230 is disposed above or below the impeller 210, and the driving shaft penetrates the impeller 210. Thus, when the single-shaft motor 230 is started, the driving shaft thereof rotates and simultaneously rotates the impeller 210.

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 base 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 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 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 base 250. As shown in fig. 8, the single-shaft motor 230 is disposed above the impeller 210, the driving shaft penetrates 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 purification assembly is disposed at the air outlet 112. 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. When air enters the casing 100 from the air inlet 111, the air exchanges heat with the heat exchange assembly, and when the air in the casing 100 enters the indoor space from the air outlet 112, the air is purified by the purification assembly, so that the quality of the air outlet of the indoor unit is improved.

Optionally, a heat exchange assembly is disposed at the air outlet 112, and a purification assembly is disposed at the air inlet 111. 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 purification 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 indoor from the air outlet 112, so that the quality of the air outlet of the indoor unit is improved.

Optionally, the cleaning assembly includes an air filter covering the air outlet 112 or the air inlet 111. Types of air filters include, but are not limited to, HEPA filters, glass fiber filters, electrostatic filters, activated carbon fiber filters.

Optionally, the heat exchange assembly includes a heat exchanger 400, and the heat exchanger 400 covers the air outlet 112 or the air inlet 111. If the heat exchanger 400 is disposed at the air inlet 111, the air enters the casing 100 from the air inlet 111 and exchanges heat with the heat exchange assembly; if the heat exchanger 400 is disposed at the air outlet 112, the air exchanges heat with the heat exchange assembly when being blown into the room from the air outlet 112. The heat exchanger 400 covering the air outlet 112 or the air inlet 111 can improve the cooling or heating efficiency of the indoor unit.

Optionally, the surface of the heat exchanger 400 is provided with fins. The heat exchange area of the heat exchanger 400 can be increased by the fins, and the cooling or heating efficiency of the indoor unit is improved.

Alternatively, the heat exchanger 400 is configured in a U shape, and an opening of the U shape faces the air outlet 112 or the air inlet 111. Thus, the U-shaped heat exchanger 400 can increase a heat exchange area and improve cooling or heating efficiency of the indoor unit.

Alternatively, the heat exchanger 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 heat exchanger 400 having a plate shape parallel to the plane of the outlet 112 or the inlet 111 can save the installation space in the cabinet 100.

Alternatively, the heat exchanger 400 is configured to be plate-shaped, 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 heat exchanger 400 parallel to the plane of the air outlet 112 or the air inlet 111, the plate-shaped heat exchanger 400 inclined to the plane of the air outlet 112 or the air inlet 111 can increase the heat exchange area and improve the cooling or heating efficiency of the indoor unit.

The embodiment of the disclosure also provides an air conditioner, which comprises the indoor unit described in any one of the embodiments.

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 indoor unit, comprising:

the air conditioner comprises a shell (100), wherein an air inlet (111) and two air outlets (112) are arranged on the same side plate of the shell, and the two air outlets (112) are respectively positioned on two sides of the air inlet (111);

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

a fan assembly disposed within the enclosure (100) and including 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), each air outlet (112) corresponds to at least one centrifugal fan (200), and the air outlet (222) of the centrifugal fan (200) faces the air outlet (112).

2. The indoor unit according to claim 1,

the air outlet direction of the air outlet (222) of the centrifugal fan (200) is vertical to the plane where the air outlet (112) of the shell (100) is located.

3. The indoor unit according to claim 1, wherein,

when the axes of the impellers (210) of the centrifugal fans (200) are parallel to the bottom plate (120) of the casing (100), the axes of the impellers (210) of the centrifugal fans (200) are coaxially arranged.

4. The indoor unit according to any one of claims 1 to 3, wherein the heat exchange assembly comprises:

a heat exchanger (400) covering the air outlet (112) or the air inlet (111).

5. Indoor unit according to claim 4, characterized in that the heat exchanger (400) is configured in a U-shape with the opening of the U-shape facing the air outlet (112) or the air inlet (111).

6. Indoor unit according to claim 4, characterized in that the heat exchanger (400) is constructed in the form of a plate with its plate surface parallel to the plane of the outlet opening (112) or the inlet opening (111).

7. Indoor unit according to claim 4, characterized in that the heat exchanger (400) is constructed in the form of a plate with its plate surface inclined to the plane of the air outlet (112) or air inlet (111).

8. Indoor unit according to any of claims 1 to 3, characterized in that the axis of the impeller (210) of the centrifugal fan (200) is perpendicular to the base plate (120) of the casing (100), the centrifugal fan (200) comprising:

the single-shaft motor (230) is hung above the impeller (210), and a driving shaft of the single-shaft motor (230) penetrates through the impeller (210).

9. Indoor unit according to claim 8, characterized in that the centrifugal fan (200) further comprises:

and the motor base (250) is arranged on the top surface of the machine shell (100) and is used for hoisting the single-shaft motor (230).

10. An air conditioner characterized by comprising the indoor unit according to any one of claims 1 to 9.

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