Indoor unit of air conditioner

Abstract

The utility model provides an indoor unit of an air conditioner. The indoor unit comprises a shell and a flow dividing device. The shell is provided with a first air outlet and a second air outlet. An air duct is arranged in the shell and provided with a main air duct section, a first air duct section and a second air duct section, and the first air duct section and the second air duct section are connected to the front end of the main air duct section. The first air duct section is connected to the first air outlet, and the second air duct section is connected to the second air outlet. The flow dividing device is rotatably arranged at the front end of the main air duct section and is configured to guide and divide air flow from the main air duct section, so that part of the air flow flows to the first air duct section, and the other part of the air flow flows to the second air duct section. When the indoor unit of the air conditioner is mounted at a wall corner, the first air outlet or the second air outlet may be blocked by a wall body, and the amount of airflow flowing out of the first air outlet or the second air outlet is adjusted by adjusting the rotating angle of the flow dividing device, so that the amount of airflow blown out towards the wall body is reduced, and the air volume loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an indoor unit of an air conditioner. Background Technology

[0002] As people have increasingly higher requirements for the appearance of floor-standing air conditioners, single-column dual-outlet air conditioners with a more neat and aesthetically pleasing appearance are becoming more and more popular. This type of floor-standing air conditioner maximizes the integrity of the front view, meaning the air outlets can only be placed on the left and right sides of the front door panel. However, feedback from numerous user surveys indicates that users habitually place the air conditioner in a corner. This placement causes the air from one of the left or right outlets to blow onto the wall, reducing the airflow into the room and thus affecting the overall heating and cooling performance, severely impacting the user experience. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an air conditioner indoor unit that overcomes or at least partially solves the above problems. Users can adjust the air volume of the left and right air outlets to solve the problem of excessive air loss and wasted cooling capacity caused by the air outlets of the air conditioner indoor unit blowing air towards the wall, thereby achieving the effect of improving the temperature rise and fall of the air conditioner indoor unit.

[0004] Specifically, this utility model provides an indoor unit for an air conditioner, comprising:

[0005] A housing is provided with a first air outlet and a second air outlet; the first air outlet is located on one side of the housing, and the second air outlet is located on the other side of the housing; both the first air outlet and the second air outlet extend vertically; an air duct is provided inside the housing, the air duct having a main air duct section, and a first air duct section and a second air duct section connected to the front end of the main air duct section; the first air duct section is connected to the first air outlet, and the second air duct section is connected to the second air outlet;

[0006] A diversion device is rotatably disposed at the front end of the main air duct section. The diversion device is configured to guide and divert the airflow from the main air duct section so that part of the airflow flows to the first air duct section and the remaining part of the airflow flows to the second air duct section.

[0007] Optionally, the indoor unit of the air conditioner further includes:

[0008] A driving device is disposed within the housing, the driving device being configured to drive the flow diversion device to a first rotational position or a second rotational position; when the flow diversion device is in the first rotational position, the flow diversion device is configured to cause more than 70% of the airflow to flow out from the first air outlet through the first air duct section; when the flow diversion device is in the second rotational position, the flow diversion device is configured to cause more than 70% of the airflow to flow out from the second air outlet through the second air duct section.

[0009] A controller, electrically connected to the drive device, is configured to receive control information and control the drive device according to the control information to cause the diverter to rotate to the first rotation position or the second rotation position.

[0010] Optionally, the diversion device is an air guide grille, which has multiple grille plates extending in a vertical direction.

[0011] Optionally, multiple grilles rotate synchronously around the same vertical axis, and the width of the rear end of the air guide channel formed by two adjacent grilles is greater than the width of the front end.

[0012] The ratio between the width of the front end and the width of the rear end of the air guide channel is 2 / 3 to 10 / 11.

[0013] Optionally, multiple grilles rotate synchronously around the same vertical axis, and the width of the rear end of the air guide channel formed by two adjacent grilles is less than or equal to the width of the front end.

[0014] The ratio between the width of the rear end and the width of the front end of the air guide channel is 2 / 3 to 1.

[0015] Optionally, each of the grid plates is rotatably configured so that the plurality of grid plates are rotatable about a plurality of vertical axes respectively;

[0016] The rotation angle of at least one of the plurality of grating plates is different from the rotation angle of the other grating plates.

[0017] Optionally, the width ratio between the inlet of the first air duct section and the inlet of the second air duct section is 4 / 5 to 6 / 5;

[0018] The width between two adjacent grille plates is the grille width, and at least one grille width is different from the other grille widths; and along the width direction of the front end of the main air duct section, the grille width at the middle position is greater than the grille width at the outermost position.

[0019] Optionally, the first air outlet and the second air outlet are respectively located at the front ends of the two side walls of the housing.

[0020] Optionally, the indoor unit of the air conditioner further includes:

[0021] A first air guide plate, rotatably disposed at the first air outlet, configured to open or close the first air outlet; a first clearance groove connected to the first air outlet is provided on the rear wall of the first air duct section, the first clearance groove being used to allow for the rotation of the air guide plate; the distance from the rear edge of the first air guide plate to its axis of rotation is greater than the distance from the front edge of the first air guide plate to its axis of rotation; and / or,

[0022] The second air guide plate is rotatably disposed at the second air outlet and configured to open or close the second air outlet; the rear wall of the second air duct section is provided with a second clearance groove connected to the second air outlet, the second clearance groove being used to allow for the rotation of the air guide plate; the distance from the rear edge of the second air guide plate to its axis of rotation is greater than the distance from the front edge of the second air guide plate to its axis of rotation.

[0023] Optionally, the indoor unit of the air conditioner further includes:

[0024] A cross-flow impeller is disposed within the housing;

[0025] The main air duct end has a first air duct wall and a second air duct wall. The first air duct wall has a volute tongue that cooperates with the cross-flow impeller, and the second air duct wall has a volute shell that cooperates with the cross-flow impeller.

[0026] The rear wall of the first air duct section is connected to the first air duct wall, and the rear wall of the second air duct section is connected to the second air duct wall;

[0027] The indoor unit of the air conditioner is to be placed in a corner of the indoor space, and the second air outlet is configured to be set on the wall adjacent to the indoor space.

[0028] In the indoor unit of this air conditioner, the airflow of the main air duct section passes through the first and second air duct sections and exits from the first air outlet corresponding to the first air duct section and the second air outlet corresponding to the second air duct section, thereby expanding the lateral air supply angle of the indoor unit. A diverter is rotatably mounted at the front end of the main air duct section. After passing through the diverter, the airflow in the main air duct section is guided and diverted, adjusting the amount of airflow passing through the first and second air duct sections to better meet user needs. When the indoor unit is installed in a corner, the wall may block the first or second air outlet. By adjusting the rotation angle of the diverter, the amount of airflow exiting the first or second air outlet is adjusted, reducing the amount of airflow blowing towards the wall and minimizing airflow loss. Taking the wall blocking the first air outlet as an example, the user can independently control the rotation of the diverter, ensuring that less airflow passes through the first air duct section than through the second air duct section. In other words, most of the airflow exits from the second air outlet, while less airflow exits from the first air outlet. This design allows the indoor unit of an air conditioner with two air outlets (left and right) to control the airflow, ensuring that most of the airflow is directed from the unobstructed outlet, depending on the unit's placement in a corner. This minimizes airflow blowing against the wall, reducing airflow loss and wasted cooling capacity, while maximizing the amount of airflow directed into the room. This ensures the overall temperature control performance and user experience is not affected. Alternatively, if the user is positioned to one side of the indoor unit, adjusting the rotation angle of the air distribution device can increase the airflow from the corresponding outlet, thus meeting the user's need for rapid cooling or heating.

[0029] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0030] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0031] Figure 1 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of an air conditioner indoor unit placed in a corner of a room according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of an air conditioner indoor unit placed in another corner of a room according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0035] Figure 5 This is a flowchart of a control method for an indoor unit of an air conditioner according to an embodiment of the present invention. Detailed Implementation

[0036] The following reference Figures 1 to 5 This description pertains to the indoor unit of an air conditioner according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0037] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Figure 1 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention, as shown below. Figure 1 As shown, and with reference Figures 2 to 5 This utility model provides an indoor unit for an air conditioner, including a housing 100 and a diversion device 900. The housing has a first air outlet and a second air outlet. The first air outlet is located on one side of the housing, and the second air outlet is located on the other side. Both the first and second air outlets extend vertically. An air duct is provided inside the housing, comprising a main air duct section and a first air duct section and a second air duct section connected to the front end of the main air duct section. The first air duct section is connected to the first air outlet, and the second air duct section is connected to the second air outlet. The diversion device 900 is rotatably disposed at the front end of the main air duct section. The diversion device 900 is configured to guide and divert airflow from the main air duct section, so that part of the airflow flows to the first air duct section, and the remaining airflow flows to the second air duct section.

[0041] The airflow in the main air duct section 130 passes through the first and second air duct sections and exits from the first air outlet 101 corresponding to the first air duct section and the second air outlet 102 corresponding to the second air duct section, which can expand the lateral air supply angle of the indoor unit of the air conditioner. The diversion device 900 is rotatably disposed at the front end of the main air duct section. After the airflow in the main air duct section passes through the diversion device 900, it is guided and diverted by the diversion device 900, which can adjust the amount of airflow passing through the first and second air duct sections, thereby better meeting the user's needs. When the indoor unit of the air conditioner is installed in a corner, the wall may block the first air outlet 101 or the second air outlet 102. By adjusting the rotation angle of the diversion device 900, the amount of airflow from the first air outlet 101 or the second air outlet 102 can be adjusted to reduce the amount of airflow blown towards the wall and reduce airflow loss. Taking the wall 800 blocking the first air outlet 101 as an example, the user can independently control the rotation of the diversion device 900 to ensure that the airflow through the first air duct section 110 is less than the airflow through the second air duct section 120. In other words, most of the airflow is blown out from the second air outlet 102, while less airflow is blown out from the first air outlet 101. This configuration allows the indoor unit of an air conditioner with two air outlets (left and right) to control the airflow so that most of it is blown out from the outlet not obstructed by the wall 800, depending on the unit's placement in the corner. This minimizes airflow blowing onto the wall 800, reducing airflow loss and wasted cooling capacity, while maximizing the amount of airflow directed into the room, thus not affecting the overall heating and cooling performance and the user's experience. Alternatively, if the user is positioned to one side of the indoor unit, they can adjust the rotation angle of the diversion device 900 to allow more airflow to be blown out from the corresponding air outlet, thus meeting the user's need for rapid cooling or heating.

[0042] In some embodiments of this utility model, such as Figure 1 As shown, the indoor unit of the air conditioner also includes a drive unit 700 and a controller. The drive unit 700 is disposed within the housing and is configured to move the air distribution device 900 to a first rotational position or a second rotational position. When the air distribution device 900 is in the first rotational position, it is configured to cause more than 70% of the airflow to flow out from the first air outlet through the first air duct section. When the air distribution device 900 is in the second rotational position, it is configured to cause more than 70% of the airflow to flow out from the second air outlet through the second air duct section. The controller is electrically connected to the drive unit 700 and is configured to receive control information and control the drive unit 700 according to the control information to rotate the air distribution device 900 to the first rotational position or the second rotational position.

[0043] The user controls the drive unit 700 to operate via the controller, thereby rotating the diverter 900. When the diverter 900 rotates to the first or second rotation position, at least 70% of the airflow can enter the first or second air duct section, allowing the user to quantitatively control the amount of airflow entering the first or second air duct section, facilitating user adjustment.

[0044] In some embodiments of this utility model, the driving device 700 is a stepper motor.

[0045] In some embodiments of this utility model, such as Figure 1 As shown, the flow diversion device 900 is an air guide grille, which has multiple grille plates extending vertically. The flow diversion device 900 uses an air guide grille, which has a simple structure and a good effect on guiding the airflow direction.

[0046] In some embodiments of this utility model, such as Figure 1 As shown, multiple grating plates rotate synchronously around the same vertical axis, and the width of the rear end of the air guide channel formed by two adjacent grating plates is greater than the width of the front end.

[0047] This design facilitates the entry of airflow into the air guide channel, and the airflow speed increases after entering the air guide channel. When the airflow flowing out of the air guide channel enters the first air duct or the second air duct and is blown out from the first air outlet 101 or the second air outlet 102, the airflow can be sent to a farther position, thus taking into account both the air delivery distance and the air delivery to one side.

[0048] Furthermore, in some embodiments of this utility model, the ratio between the width of the front end and the width of the rear end of the air guide channel is 2 / 3 to 10 / 11. For example, the ratio between the width of the front end and the width of the rear end of the air guide channel is 0.66, 0.7, 0.8, or 0.9.

[0049] In some alternative embodiments of this utility model, such as Figure 1 As shown, multiple grille panels rotate synchronously around the same vertical axis, and the width of the rear end of the air guide channel is less than or equal to the width of the front end. This arrangement ensures maximum airflow. Users can select this configuration based on the installation location of the indoor unit of the air conditioner, for example, relatively far from the wall. This embodiment can be used to facilitate airflow distribution.

[0050] Furthermore, in some embodiments of this utility model, the ratio between the width of the rear end of the air guide channel and the width of the front end is 2 / 3 to 1. For example, the ratio between the width of the rear end of the air guide channel and the width of the front end is 0.75, 0.8, 0.9, or 1.0.

[0051] In some alternative embodiments of this invention, each grille is rotatably configured so that multiple grilles can rotate about multiple vertical axes. The rotation angle of at least one grille differs from the rotation angles of the other grilles. The multiple grilles can rotate independently and asynchronously about the multiple vertical axes, causing the airflow to change direction after passing through them. For example, when both the first and second air outlets require airflow, a portion of the grilles rotates to one side to guide the airflow towards the first air duct section, while the remaining portions rotate to the other side to guide the airflow towards the second air duct section, reducing airflow resistance. Of course, in other embodiments, the multiple grilles can also rotate independently and synchronously about multiple vertical axes.

[0052] In some embodiments of this utility model, the width ratio between the inlet of the first air duct section 110 and the inlet of the second air duct section 120 is 4 / 5 to 6 / 5. For example, the width ratio between the inlet of the first air duct section 110 and the inlet of the second air duct section 120 is 0.8, 0.9, 1.0, 1.1, or 1.2.

[0053] In some embodiments of this utility model, such as Figure 4 As shown, an air guide channel is defined between every two adjacent grille plates. The width of the front end of the air guide channel is the same as the grille width, and at least one grille width is different from the other grille widths. Furthermore, along the width direction of the front end of the main air duct section 130, the grille width at the middle position is greater than the grille width at the outermost position. Since the airflow in the middle of the width direction of the front end of the main air duct section 130 is more likely to enter the first and second air ducts, the grille width at the middle position can be increased to reduce wind resistance.

[0054] In some embodiments of this utility model, the first air outlet 101 and the second air outlet 102 are respectively disposed at the front ends of the two side walls of the housing 100. This arrangement allows the first air outlet 101 and the second air outlet 102 to be as close as possible to the user's activity space that needs to be heated or cooled, thereby allowing the airflow blown out by the first air outlet 101 and the second air outlet 102 to directly reach the user's activity space.

[0055] In some embodiments of this utility model, such as Figure 1As shown, the indoor unit of the air conditioner also includes a first air guide plate 300 and a second air guide plate 500. The first air guide plate 300 is rotatably disposed at the first air outlet and configured to open or close the first air outlet. The rear wall of the first air duct section is provided with a first clearance groove 111 connected to the first air outlet, which is used to allow for the rotation of the air guide plate. The distance from the rear edge of the first air guide plate 300 to its axis of rotation is greater than the distance from the front edge of the first air guide plate 300 to its axis of rotation. The second air guide plate 500 is rotatably disposed at the second air outlet and configured to open or close the second air outlet. The rear wall of the second air duct section is provided with a second clearance groove 121 connected to the second air outlet, which is used to allow for the rotation of the air guide plate. The distance from the rear edge of the second air guide plate 500 to its axis of rotation is greater than the distance from the front edge of the second air guide plate 500 to its axis of rotation.

[0056] The first air guide plate 300 can both guide the airflow direction through the first air outlet 101 and open or close the first air outlet 101. The second air guide plate 500 can both guide the airflow direction through the second air outlet 102 and open or close the second air outlet 102. The distance from the rear edge of the first air guide plate 300 to its axis of rotation is greater than the distance from the front edge of the first air guide plate 300 to its axis of rotation. This arrangement ensures that when the first air guide plate 300 rotates, most of its structure is within the first air outlet 101, avoiding insufficient rotation space when the portion of the first air guide plate 300 outside the first air outlet 101 is large, thus preventing interference with the rotation of the first air guide plate 300 when installed near the wall 800. The rear wall of the second air duct section 120 is provided with a second clearance groove 121 connected to the second air outlet 102. The second clearance groove 121 is used to allow space for the rotation of the second air guide plate 500. The distance from the rear edge of the second air guide plate 500 to its axis of rotation is greater than the distance from the front edge of the second air guide plate 500 to its axis of rotation. This arrangement ensures that most of the structure of the second air guide plate 500 is within the second air outlet 102 when it rotates, avoiding insufficient rotation space when the larger portion of the second air guide plate 500 is installed close to the wall 800, which would otherwise affect the rotation of the second air guide plate 500.

[0057] In some embodiments of this utility model, such as Figure 1 As shown, the indoor unit of the air conditioner also includes a cross-flow fan 140, which is disposed within the housing 100. The main air duct end has a first air duct wall 131 and a second air duct wall 132. The first air duct wall 131 has a volute tongue that mates with the cross-flow fan 140, and the second air duct wall 132 has a volute casing that mates with the cross-flow fan 140. The rear wall of the first air duct section 110 is connected to the first air duct wall 131, and the rear wall of the second air duct section 120 is connected to the second air duct wall 132.

[0058] The airflow generated by the cross-flow impeller 140 flows between the volute tongue and the volute casing, and exits through the first air duct section 110 and the second air duct section 120. The airflow generated by the cross-flow impeller 140 is concentrated on one side of the volute casing. Guided by the volute casing, the airflow on the volute casing side flows towards the inlet of the first air duct. Therefore, the amount of airflow passing through the first air duct is greater than the amount of airflow passing through the second air duct. Moreover, compared to the second air duct, the first air duct has less wind resistance. Therefore, the air delivery from the first air outlet 101 is relatively smoother.

[0059] In some embodiments of this utility model, the indoor unit of the air conditioner is placed in a corner of the indoor space, and the second air outlet 102 is configured to be set near the wall of the indoor space. The first air outlet 101 delivers air more smoothly. When the indoor unit of the air conditioner is placed in a corner of the indoor space, the second air outlet 102 is preferentially set close to the wall, while the first air outlet 101 is used for air delivery.

[0060] In some embodiments of this utility model, such as Figure 2 , Figure 3 and Figure 5 As shown, after the indoor unit of the air conditioner is turned on, the first air outlet 101 and the second air outlet 102 simultaneously supply air, as... Figure 2 As shown, when the user observes that the wall 800 is to the right of the indoor unit of the air conditioner, the control information is transmitted to the controller via the remote control to control the air distribution device 900 to rotate to the first rotation position. More than 70% of the airflow flows out from the first air outlet 101 through the first air duct section 110, which is the main air path. This setting can reduce the airflow blowing towards the wall 800, thereby reducing air loss and improving the heating and cooling effect of the indoor unit of the air conditioner. Figure 3 As shown, when the user observes that the wall 800 is to the left of the indoor unit of the air conditioner, the controller controls the diversion device 900 to rotate to the left to the second rotation position. More than 70% of the airflow flows out from the second air outlet 102 through the second air duct section 120, which is the main air path. This setting can reduce the airflow blowing towards the wall 800, thereby reducing air loss and improving the heating and cooling effect of the indoor unit of the air conditioner. Of course, if there is no wall 800 near the indoor unit of the air conditioner, that is, if the indoor unit of the air conditioner is not in a corner, the first air outlet 101 and the second air outlet 102 will still deliver air normally, and the heating and cooling effect of the indoor unit of the air conditioner will still be improved.

[0061] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: A housing is provided with a first air outlet and a second air outlet; the first air outlet is located on one side of the housing, and the second air outlet is located on the other side of the housing; both the first air outlet and the second air outlet extend vertically; an air duct is provided inside the housing, the air duct having a main air duct section, and a first air duct section and a second air duct section connected to the front end of the main air duct section; the first air duct section is connected to the first air outlet, and the second air duct section is connected to the second air outlet; A diversion device is rotatably disposed at the front end of the main air duct section. The diversion device is configured to guide and divert the airflow from the main air duct section so that part of the airflow flows to the first air duct section and the remaining part of the airflow flows to the second air duct section.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, Also includes: A driving device is disposed within the housing, the driving device being configured to drive the flow diversion device to a first rotational position or a second rotational position; when the flow diversion device is in the first rotational position, the flow diversion device is configured to cause more than 70% of the airflow to flow out from the first air outlet through the first air duct section; when the flow diversion device is in the second rotational position, the flow diversion device is configured to cause more than 70% of the airflow to flow out from the second air outlet through the second air duct section. A controller, electrically connected to the drive device, is configured to receive control information and control the drive device according to the control information to cause the diverter to rotate to the first rotation position or the second rotation position.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The diversion device is an air guide grille, which has multiple grille plates extending in the vertical direction.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, Multiple grating plates rotate synchronously around the same vertical axis, and the width of the rear end of the air guide channel formed by two adjacent grating plates is greater than the width of the front end. The ratio between the width of the front end and the width of the rear end of the air guide channel is 2 / 3 to 10 / 11.

5. The indoor unit of the air conditioner according to claim 3, characterized in that, Multiple grating plates rotate synchronously around the same vertical axis, and the width of the rear end of the air guide channel formed by two adjacent grating plates is less than or equal to the width of the front end. The ratio between the width of the rear end and the width of the front end of the air guide channel is 2 / 3 to 1.

6. The indoor unit of the air conditioner according to claim 3, characterized in that, Each of the grid plates is rotatably arranged so that the plurality of grid plates can rotate about a plurality of vertical axes respectively; The rotation angle of at least one of the plurality of grating plates is different from the rotation angle of the other grating plates.

7. The indoor unit of the air conditioner according to claim 3, characterized in that, The width ratio between the inlet of the first air duct section and the inlet of the second air duct section is 4 / 5 to 6 / 5; The width between two adjacent grille plates is the grille width, and at least one grille width is different from the other grille widths; and along the width direction of the front end of the main air duct section, the grille width at the middle position is greater than the grille width at the outermost position.

8. The indoor unit of the air conditioner according to claim 1, characterized in that, The first air outlet and the second air outlet are respectively located at the front end of the two side walls of the housing.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, Also includes: A first air guide plate, rotatably disposed at the first air outlet, configured to open or close the first air outlet; a first clearance groove connected to the first air outlet is provided on the rear wall of the first air duct section, the first clearance groove being used to allow for the rotation of the air guide plate; the distance from the rear edge of the first air guide plate to its axis of rotation is greater than the distance from the front edge of the first air guide plate to its axis of rotation; and / or, The second air guide plate is rotatably disposed at the second air outlet and configured to open or close the second air outlet; the rear wall of the second air duct section is provided with a second clearance groove connected to the second air outlet, the second clearance groove being used to allow for the rotation of the air guide plate; the distance from the rear edge of the second air guide plate to its axis of rotation is greater than the distance from the front edge of the second air guide plate to its axis of rotation.

10. The indoor unit of the air conditioner according to claim 1, characterized in that, Also includes: A cross-flow impeller is disposed within the housing; The main air duct section has a first air duct wall and a second air duct wall. The first air duct wall has a volute tongue that cooperates with the cross-flow impeller, and the second air duct wall has a volute shell that cooperates with the cross-flow impeller. The rear wall of the first air duct section is connected to the first air duct wall, and the rear wall of the second air duct section is connected to the second air duct wall; The indoor unit of the air conditioner is to be placed in a corner of the indoor space, and the second air outlet is configured to be set on the wall adjacent to the indoor space.

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