CN224135949U - An indoor unit of an air conditioner - Google Patents

Abstract

The utility model provides an indoor unit of an air conditioner. The indoor unit of the air conditioner comprises a shell, an air deflector and a heat exchanger. The rear part or the lower part of the shell is provided with an air inlet, and the front part of the shell is provided with an air outlet communicated with the air inlet. The air outlet faces forward or forward and downward. The air deflector is arranged at the air outlet to divide the air outlet into an upper air outlet area and a lower air outlet area. The heat exchanger is arranged at the inner side of the air outlet, and comprises a first heat exchange part and a second heat exchange part which are arranged up and down, so that at least part of air flow flowing through the first heat exchange part flows out of the shell through the lower air outlet area, and at least part of air flow flowing through the second heat exchange part flows out of the shell through the upper air outlet area. The heat exchanger is used for distributing the flow of the refrigerant of the first heat exchange part or the second heat exchange part in a controlled way. The utility model can solve the problem that the human body is easy to catch cold or feel uncomfortable when cold air is blown directly onto the user, and achieves the purposes of avoiding the influence of the direct blowing of the cold air on the health of the user and improving the use experience of the user.

Description

Indoor unit of air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an indoor unit of an air conditioner.

Background

In summer, when the air conditioner is used for refrigerating, most of the indoor units of the existing air conditioner are directly blown with cold air in order to achieve the aim of exchanging heat and reducing temperature with the indoor. However, when cold air is blown directly onto the body of a user, the human body is easy to catch cold or feel uncomfortable. Especially, special groups such as pregnant women, children, rheumatics and the elderly are more sensitive to the cold air, and the cold air can even influence the health of users. Although some measures can be taken by some users for relieving the direct blowing of cold air, the indoor unit of the air conditioner is troublesome for the users, and the use feeling of the users is reduced.

Disclosure of utility model

In view of the above problems, the present utility model has been made to provide an indoor unit of an air conditioner, which overcomes the above problems or at least partially solves the above problems, and can solve the problem that a human body is easy to catch a cold or feel uncomfortable when cold air is blown directly onto the user, so as to achieve the purposes of avoiding the influence of direct blowing of the cold air on the health of the user and improving the use experience of the user.

Specifically, the present utility model provides an air conditioner indoor unit comprising:

The shell, the rear portion or the lower part of shell are provided with the air intake, the front portion of shell be provided with the air outlet of air intake intercommunication. The air outlet faces forward or forward and downward.

The air deflector is arranged at the air outlet and is configured to divide the air outlet into an upper air outlet area and a lower air outlet area.

The heat exchanger is arranged on the inner side of the air outlet and comprises a first heat exchange part and a second heat exchange part, the first heat exchange part is positioned on the lower side of the second heat exchange part, so that at least part of air flow flowing through the first heat exchange part flows out of the shell through the lower air outlet area, and at least part of air flow flowing through the second heat exchange part flows out of the shell through the upper air outlet area. And the heat exchanger is configured to controllably distribute the flow of the refrigerant of the first heat exchange portion or the second heat exchange portion.

Optionally, the air deflector is rotatably installed at the air outlet to have a partition position dividing the air outlet into the upper air outlet region and the lower air outlet region.

Optionally, the indoor unit of the air conditioner further includes:

The fan is arranged in the shell and is positioned between the heat exchanger and the air inlet, so that air flow is caused to enter the shell from the air inlet, and after heat exchange is carried out with the heat exchanger, the air flows out of the shell from the air outlet.

The fan is a cross-flow fan, the indoor unit of the air conditioner further comprises a volute and a volute tongue which are matched with the cross-flow fan, and the volute tongue is arranged on the lower side of the volute.

Optionally, when the air deflector is in the partition position, the rear end of the air deflector is located on the front upper side of the upper end of the first heat exchange portion.

Optionally, the upper end of the second heat exchange part is located at the front upper side of the lower end of the second heat exchange part, and the lower end of the second heat exchange part is connected to the upper end of the first heat exchange part.

When the air deflector is positioned at the partition position, the rear end of the air deflector is positioned at the front lower side or the lower side of the upper end of the second heat exchange part.

Optionally, when the air deflector is in the partition position, a distance between the rear end of the air deflector and the heat exchanger is less than or equal to 400mm. The width of the part of the air deflector extending out of the air outlet is larger than or equal to 150mm.

The width of the air deflector is greater than or equal to 300mm.

Optionally, the indoor unit of the air conditioner further comprises a throttling device.

The heat exchanger also includes a control valve configured to controllably communicate one of the first heat exchange portion and the second heat exchange portion with the throttling device.

Optionally, the control valve is further configured to controllably place the first heat exchange portion and the second heat exchange portion in simultaneous communication with the throttling device.

Optionally, the indoor unit of the air conditioner further includes:

And the human sensing device is configured to detect the position of a human body, so as to control the heat exchanger according to the position of the human body and further control the flow of the refrigerant flowing into the first heat exchange part or the second heat exchange part.

Optionally, the air deflector is in a flat plate shape.

Optionally, a plurality of swing blades are arranged on the lower wind guiding surface of the wind guiding plate.

Optionally, a plurality of swing blades are arranged on the upper air guiding surface of the air guiding plate.

Optionally, the upper edge of the air outlet is located at the upper side or front upper side of the lower edge of the air outlet.

In the indoor unit of the air conditioner, the refrigerants distributed by the first heat exchange part and the second heat exchange part can be different, so that the temperatures of the first heat exchange part and the second heat exchange part can be different, the temperatures of air flows flowing out of the upper air outlet area and the lower air outlet area respectively can be different, and the air flows with different temperatures are converged outside the air outlets and flow into the room to regulate the temperature of the room.

According to the indoor unit of the air conditioner, the flow of the refrigerant of the first heat exchange part or the second heat exchange part is adjusted according to the needs of a user, the airflows flowing out of the upper air outlet area and the lower air outlet area are mixed at the air outlet, and the mixed airflows flow into the room, so that discomfort caused by direct blowing of cold air to the user is avoided, the problem that a human body is easy to catch the cold or feel uncomfortable when the cold air is blown onto the user is solved, and the purposes of avoiding the influence of direct blowing of the cold air on the health of the user and improving the use experience of the user are achieved.

The above, as well as additional objectives, advantages, and features of the present utility model will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present utility model when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

Fig. 1 is a schematic block diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

Fig. 2 is a schematic structural view of a heat exchanger in an indoor unit of an air conditioner according to one embodiment of the present utility model.

List of reference numerals:

100. The device comprises a shell, 110, an air inlet, 120, an air outlet, 121, an upper air outlet area, 122, a lower air outlet area, 130, a volute, 140 and a volute tongue;

200. An air deflector;

300. 310 parts of heat exchanger, 320 parts of second heat exchanger, 330 parts of control valve;

400. a blower.

Detailed Description

An indoor unit of an air conditioner according to an embodiment of the present utility model will be described with reference to fig. 1 to 2. In the description of the present embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature, i.e. one or more such features. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. When a feature "comprises or includes" a feature or some of its coverage, this indicates that other features are not excluded and may further include other features, unless expressly stated otherwise.

Unless specifically stated or limited otherwise, the terms "disposed," "mounted," "connected," "affixed," "coupled," and the like are to be construed broadly and, as they are, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through intermediaries, and in communication between two elements or in interaction with one another, unless otherwise specifically stated. Those of ordinary skill in the art will understand the specific meaning of the terms described above in the present utility model as the case may be.

Furthermore, in the description of the present embodiments, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature therebetween. That is, in the description of the present embodiment, the first feature being "above", "over" and "upper" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature "under", "beneath", or "under" a second feature may be a first feature directly under or diagonally under the second feature, or simply indicate that the first feature is less level than the second feature.

In the description of the present embodiment, a description referring to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present utility model, as shown in fig. 1, and referring to fig. 2, an embodiment of the present utility model provides an indoor unit of an air conditioner. The indoor unit of the air conditioner includes a housing 100, an air guide plate 200, and a heat exchanger 300.

The rear or lower portion of the housing 100 is provided with an air inlet 110, and the front portion of the housing 100 is provided with an air outlet 120 communicating with the air inlet 110. The air outlet 120 is directed forward or forward downward.

The air deflector 200 is disposed at the air outlet 120 and is configured to divide the air outlet 120 into an upper air outlet region 121 and a lower air outlet region 122.

The heat exchanger 300 is disposed inside the air outlet 120, the heat exchanger 300 includes a first heat exchange portion 310 and a second heat exchange portion 320, and the first heat exchange portion 310 is located below the second heat exchange portion 320, so that at least a portion of the airflow flowing through the first heat exchange portion 310 flows out of the housing 100 through the lower air outlet 122, and at least a portion of the airflow flowing through the second heat exchange portion 320 flows out of the housing 100 through the upper air outlet 121. And the heat exchanger 300 is configured to controllably distribute the flow rate of the refrigerant of the first heat exchanging portion 310 or the second heat exchanging portion 320.

In the present embodiment, the air flows from the air inlet 110 into the housing 100, and flows through the first heat exchange portion 310 and the second heat exchange portion 320 of the heat exchanger 300, respectively. Because the refrigerant distributed by the first heat exchange portion 310 and the second heat exchange portion 320 may be different, the temperatures of the first heat exchange portion 310 and the second heat exchange portion 320 may be different, so that the temperatures of the airflows flowing out of the upper air outlet area 121 and the lower air outlet area 122 may be different, and the airflows with different temperatures are converged outside the air outlet 120 and flow into the room to regulate the temperature of the room.

According to the indoor unit of the air conditioner, the flow of the refrigerant of the first heat exchange part 310 or the second heat exchange part 320 is regulated according to the needs of a user, the airflows flowing out of the upper air outlet region 121 and the lower air outlet region 122 are mixed at the air outlet 120, and the mixed airflows flow into the room, so that discomfort caused by direct blowing of cold air to the user is avoided, the problem that the human body is easy to catch cold or feel uncomfortable when the cold air is blown to the user is solved, and the purposes of avoiding influence on the health of the user caused by direct blowing of the cold air and improving the use experience of the user are achieved.

In some embodiments of the present utility model, when the air conditioner indoor unit cools and outputs air, the refrigerant in the second heat exchange portion 320 is more than that in the first heat exchange portion 310, so that the temperature of the air outlet area 121 on the air conditioner indoor unit is lower, and when the air flows out from the air outlet 120, the air is mixed with the air flow with mild temperature below to enter the room, thereby avoiding direct blowing of cold air to the user.

In addition, since the first heat exchanging part 310 requires less refrigerant, the different designs of the refrigerant distributed by the first heat exchanging part 310 and the second heat exchanging part 320 also play a role in reducing the indoor energy consumption of the air conditioner.

In some embodiments of the present utility model, when the air conditioner cools and discharges air, the refrigerant distributed by the first heat exchange portion 310 and the second heat exchange portion 320 may be adjusted to be the same, so as to improve heat exchange efficiency.

In some embodiments of the present utility model, as shown in fig. 1, the wind deflector 200 is rotatably installed at the wind outlet 120 to have a partitioned position dividing the wind outlet 120 into an upper wind outlet region 121 and a lower wind outlet region 122.

In this embodiment, the air deflector 200 not only can adjust the air outlet angle by rotating, but also can divide the air outlet 120 into an upper air outlet area 121 and a lower air outlet area 122 when the air deflector 200 rotates to the partition position.

Moreover, since the air guide plate 200 is rotatable, the air guide plate 200 at the partition position can adjust the proportion of the upper air outlet area 121 and the lower air outlet area 122 according to the indoor environment or the user requirement by the rotation angle, so that the indoor unit of the air conditioner can meet various requirements of users or different scenes.

In some alternative embodiments of the present utility model, the air deflection 200 is fixedly coupled to the air outlet 120 to divide the air outlet 120 into an upper air outlet region 121 and a lower air outlet region 122.

In some alternative embodiments of the utility model, the damper 200 has only one split position and a closed position.

In the present embodiment, when the indoor unit of the air conditioner is turned on, the air guide plate 200 is at the air dividing position. When the indoor unit of the air conditioner is turned off, the air guide plate 200 is at the closed position. Only two positions are arranged for the air deflector 200, which is convenient for the user to operate and reduces the production cost of the indoor unit of the air conditioner.

In some embodiments of the present utility model, as shown in fig. 1, the indoor unit of the air conditioner further includes a fan 400, where the fan 400 is disposed in the housing 100 and between the heat exchanger 300 and the air inlet 110, so that air flow is forced to enter the housing 100 from the air inlet 110, exchange heat with the heat exchanger 300, and then flow out of the housing 100 from the air outlet 120.

The fan 400 is a cross-flow fan, and the indoor unit of the air conditioner further comprises a volute 130 and a volute tongue 140, wherein the volute 130 and the volute tongue 140 are matched with the cross-flow fan, and the volute tongue 140 is arranged on the lower side of the volute 130.

In this embodiment, the cross-flow fan has compact structure and the air current distributes even characteristics. And compared with other fan types, the cross-flow fan has lower noise and lower energy consumption during operation, and can generate more stable laminar air flow. In addition, the flow velocity of the air flow of the cross-flow fan far away from the center of the wind wheel is high, and the structural design of the fan 400, the volute 130 and the volute tongue 140 ensures that the air flow forms high-speed concentrated injection at the air outlet 120, and meanwhile, the vortex loss is kept low.

When the fan 400 is operated, the fan 400 is matched with the volute tongue 140 and the volute 130, so that air flow is guided by the volute 130 and the volute tongue 140 after entering from the air inlet 110, then the air flow is subjected to full heat exchange through the heat exchanger 300, and finally the air flow is sent out from the air outlet 120.

The structure of the lower volute tongue 140 also effectively inhibits turbulence of the air flow at the outlet of the volute 130, improves the air flow conveying efficiency, reduces operation noise, and enables air supply to be softer and more comfortable by improving the air flow quality, so that quieter and more energy-saving use experience can be brought to users.

In some embodiments of the utility model, as shown in fig. 1, the rear end of the air deflection 200 is located on the front upper side of the upper end of the first heat exchanging portion 310 when the air deflection 200 is in the zoned position.

In this embodiment, when the air guide plate 200 rotates to the partitioning position, the air guide plate 200 is located at the front upper side of the upper end of the first heat exchanging portion 310, that is, the first heat exchanging portion 310 is located at the lower side of the air guide plate 200, so that the air guide plate 200 can flow out the air flowing through the first heat exchanging portion 310 through the lower air outlet area 122. Because the temperatures of the air flows through the first heat exchange portion 310 and the second heat exchange portion 320 are different, the temperatures of the air flows flowing out of the upper air outlet region 121 and the air flows out of the lower air outlet region 122 are different, so as to meet the condition of realizing cold air mixing.

In some alternative embodiments of the utility model, as shown in fig. 1, the rear end of the air deflection 200 is located on the front lower side of the upper end of the first heat exchanging portion 310 and on the front upper side of the lower end of the first heat exchanging portion 310 when the air deflection 200 is in the zoned position.

In some embodiments of the present utility model, as shown in fig. 1, the upper end of the second heat exchanging part 320 is located at the front upper side of the lower end of the second heat exchanging part 320, and the lower end of the second heat exchanging part 320 is connected to the upper end of the first heat exchanging part 310.

When the air guide plate 200 is at the partitioning position, the rear end of the air guide plate 200 is located at the front lower side or the lower side of the upper end of the second heat exchanging portion 320.

In this embodiment, the second heat exchange portion 320 adopts a forward-inclined mounting structure, and the lower end and the first heat exchange portion 310 form a continuous heat exchange surface, and the inclined arrangement makes the air flow generate a natural upward trend when passing through the second heat exchange portion 320, so that on one hand, a certain flow guiding effect can be achieved on the air flow, and on the other hand, the contact area between the air flow and the heat exchanger 300 is increased, so as to improve the heat exchange efficiency.

The air deflection 200 is rotated to different positions to control the airflow distribution ratio and flow direction of the upper and lower air outlet sections 121 and 122. When the air guide plate 200 is at the partition position, the air guide plate 200 is located at the front lower side or the lower side of the upper end of the second heat exchange portion 320, that is, at least a portion of the second heat exchange portion 320 is located at the upper side of the air guide plate 200, so that the air guide plate 200 can flow at least a portion of the air flowing through the second heat exchange portion 320 out through the upper air outlet area 121. Because the temperatures of the air flows through the first heat exchange portion 310 and the second heat exchange portion 320 are different, the temperatures of the air flows flowing out of the upper air outlet region 121 and the air flows out of the lower air outlet region 122 are different, so as to meet the condition of realizing cold air mixing.

In some embodiments of the utility model, as shown in fig. 1, the heat exchanger 300 may be a plate heat exchanger 300.

In some alternative embodiments of the present utility model, the heat exchanger 300 may be a V-shaped heat exchanger 300, the rear end of the first heat exchanging part 310 is located at an upper side of the front end of the first heat exchanging part 310, and the rear end of the first heat exchanging part 310 is connected with the rear end of the second heat exchanging part 320.

In some embodiments of the utility model, the distance between the rear end of the air deflection 200 and the heat exchanger 300 when the air deflection 200 is in the zoned position is less than or equal to 400mm.

The width of the portion of the wind deflector 200 protruding from the wind outlet 120 is 150mm or more.

The width of the air deflector 200 is 300mm or more.

In this embodiment, the design of the space between the rear end of the air deflector 200 and the heat exchanger 300 within 400mm not only avoids the air flow diffusion loss caused by the excessive space, but also saves the space between the air deflector 200 and the heat exchanger 300, and provides conditions for reducing the volume of the housing 100.

The width of the air deflector 200 extending beyond the air outlet 120 by more than 150mm and the width specification of the air deflector by more than 300mm as a whole provide sufficient contact area for the air flow guiding process so that the air flow can be separated and guided to the upper air outlet area 121 or the lower air outlet area 122.

In some embodiments of the utility model, the air conditioner indoor unit further comprises a throttle device.

As shown in fig. 2, the heat exchanger 300 further includes a control valve 330, the control valve 330 being configured to controllably communicate one of the first heat exchange portion 310 and the second heat exchange portion 320 with a throttling device.

In this embodiment, the cooperation of the throttling device and the control valve 330 realizes the control of the refrigerant flow path and flow rate, and the control valve 330 selectively communicates the throttling device with the first heat exchange portion 310 or the second heat exchange portion 320 according to the required mode, so as to achieve the purpose of dynamically adjustable refrigerant distribution, and enable the indoor unit of the air conditioner to flexibly select multiple operation modes such as lower independent heat exchange or upper independent heat exchange according to the user requirements of the indoor unit.

In some embodiments of the utility model, the control valve 330 is further configured to controllably place both the first heat exchange portion 310 and the second heat exchange portion 320 in simultaneous communication with the restriction.

In this embodiment, the control valve 330 can switch between three working states, i.e. the first heat exchange portion 310 is communicated separately, the second heat exchange portion 320 is communicated separately, or the first heat exchange portion 310 and the second heat exchange portion 320 are communicated simultaneously, so that the indoor unit of the air conditioner can flexibly select multiple operation modes such as lower portion single heat exchange, upper portion single heat exchange or simultaneous heat exchange according to indoor environment and user requirements.

In some embodiments of the present utility model, the indoor unit of the air conditioner further includes a human sensing device configured to detect a position of a human body to control the heat exchanger 300 according to the position of the human body, thereby controlling a flow rate of the refrigerant flowing into the first heat exchanging part 310 or the second heat exchanging part 320.

In this embodiment, the human sensing device can detect the position of the indoor user in real time, and adjust the control valve 330 according to the position of the human body, so as to achieve the purpose of distributing the flow of the refrigerant flowing into the first heat exchange portion 310 and the second heat exchange portion 320.

For example, when it is detected that the user is at the lower part of the indoor unit of the air conditioner, the refrigerant flow of the first heat exchange portion 310 or the second heat exchange portion 320 can be adjusted, so as to achieve the effect of mild air outlet, and avoid the user from being directly blown by cold air. When the user is located at a remote position of the indoor unit of the air conditioner, the refrigerant flow of the first heat exchange portion 310 or the second heat exchange portion 320 is adjusted, so that the heat exchange efficiency is improved, and the purpose of indoor rapid heat exchange is achieved.

In some embodiments of the utility model, as shown in FIG. 1, the air deflection 200 is planar.

In this embodiment, the air deflector 200 adopts a plate structure to increase the air guiding area of the air deflector 200, and the flat plate structure is convenient for production and manufacturing, thereby reducing the production cost of the air deflector 200.

In some embodiments of the present utility model, a plurality of swing blades are disposed on the lower wind guiding surface of the wind guiding plate 200. When the swing blades are arranged on the lower wind guiding surface of the wind guiding plate 200, the airflow in the lower wind outlet area 122 can be further guided.

In some embodiments of the present utility model, a plurality of swing blades are disposed on the upper wind guiding surface of the wind guiding plate 200. The upper air guiding surface is provided with the swing blades, so that the air flow in the upper air outlet area 121 can be further guided.

In some embodiments of the present utility model, the upper edge of the air outlet 120 is located at the upper side or front upper side of the lower edge of the air outlet 120.

In this embodiment, the upper edge of the air outlet 120 structure is located at the upper side or the front upper side of the lower edge, and when the air flows out from the air outlet 120, the upper edge of the air outlet 120 structure further guides the air flow out from the upper air outlet area 121, so as to promote the air flow out from the upper air outlet area 121 to be fully mixed with the air flow out from the lower air outlet area 122.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been shown and described herein in detail, many other variations or modifications of the utility model consistent with the principles of the utility model may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the utility model. Accordingly, the scope of the present utility model should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. An indoor unit of an air conditioner, comprising:

The device comprises a shell, a shell and a cover, wherein an air inlet is formed in the rear part or the lower part of the shell, and an air outlet communicated with the air inlet is formed in the front part of the shell;

The air deflector is arranged at the air outlet and is configured to divide the air outlet into an upper air outlet area and a lower air outlet area;

The heat exchanger is arranged on the inner side of the air outlet and comprises a first heat exchange part and a second heat exchange part, the first heat exchange part is positioned on the lower side of the second heat exchange part, so that at least part of air flow flowing through the first heat exchange part flows out of the shell through the lower air outlet area, at least part of air flow flowing through the second heat exchange part flows out of the shell through the upper air outlet area, and the heat exchanger is configured to distribute the flow of refrigerant of the first heat exchange part or the second heat exchange part in a controlled manner.

2. The indoor unit of claim 1, wherein the indoor unit of the air conditioner,

The air deflector is rotatably arranged at the air outlet so as to divide the air outlet into an upper air outlet area and a lower air outlet area.

3. The indoor unit of air conditioner according to claim 2, further comprising:

The fan is arranged in the shell and is positioned between the heat exchanger and the air inlet, so that air flow is caused to enter the shell from the air inlet, and after heat exchange is carried out with the heat exchanger, the air flows out of the shell from the air outlet;

The fan is a cross-flow fan, the indoor unit of the air conditioner further comprises a volute and a volute tongue which are matched with the cross-flow fan, and the volute tongue is arranged on the lower side of the volute.

4. An indoor unit of an air conditioner according to claim 2, wherein,

When the air deflector is positioned at the partition position, the rear end of the air deflector is positioned at the front upper side of the upper end of the first heat exchange part.

5. An indoor unit of an air conditioner according to claim 2, wherein,

The upper end of the second heat exchange part is positioned at the front upper side of the lower end of the second heat exchange part, and the lower end of the second heat exchange part is connected with the upper end of the first heat exchange part;

When the air deflector is positioned at the partition position, the rear end of the air deflector is positioned at the front lower side or the lower side of the upper end of the second heat exchange part.

6. An indoor unit of an air conditioner according to claim 2, wherein,

When the air deflector is positioned at the partition position, the distance between the rear end of the air deflector and the heat exchanger is less than or equal to 400mm;

The width of the part of the air deflector extending out of the air outlet is larger than or equal to 150mm;

The width of the air deflector is greater than or equal to 300mm.

7. The indoor unit of claim 1, further comprising a throttle device;

the heat exchanger also includes a control valve configured to controllably communicate one of the first heat exchange portion and the second heat exchange portion with the throttling device.

8. The indoor unit of claim 7, wherein the control valve is further configured to controllably place the first heat exchange portion and the second heat exchange portion in simultaneous communication with the restriction device.

9. The indoor unit of air conditioner of claim 1, further comprising:

And the human sensing device is configured to detect the position of a human body, so as to control the heat exchanger according to the position of the human body and further control the flow of the refrigerant flowing into the first heat exchange part or the second heat exchange part.

10. The indoor unit of claim 1, wherein the indoor unit of the air conditioner,

The air deflector is flat;

A plurality of swing blades are arranged on the lower wind guiding surface of the wind guiding plate and/or,

A plurality of swing blades are arranged on the upper air guide surface of the air guide plate;

The upper edge of the air outlet is positioned on the upper side or the front upper side of the lower edge of the air outlet.