Air conditioner indoor unit

Abstract

The present application relates to the technical field of air conditioners, and discloses an air conditioner indoor unit. The air conditioner indoor unit provided by the present application includes: a housing, in which a connecting plate is fixed; a wind wheel assembly, including a rotating shaft and a wind wheel, the rotating shaft is fixedly provided with the wind wheel, the rotating shaft is rotatably arranged in the housing, and the rotation of the rotating shaft can drive the wind wheel to rotate around a first rotation center; a volute assembly, including a sealing baffle and a volute, the sealing baffle is fixedly provided with the volute, the sealing baffle is rotatably connected to the connecting plate and can undergo relative displacement, and the rotation of the sealing baffle can drive the volute to rotate around a second rotation center; an adjusting mechanism, located on the connecting plate, during the rotation of the sealing baffle, the adjusting mechanism can drive the sealing baffle to displace relative to the connecting plate in the first direction, thereby adjusting the distance between the second rotation center and the first rotation center. By providing an adjusting mechanism that can adjust the rotation center of the volute, the present application can avoid the problem of interference when the volute rotates in the air conditioner indoor unit.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, for example, to an air conditioner indoor unit. Background Art

[0002] With rising living standards, air conditioners have become an indispensable household appliance, enhancing quality of life and enjoying widespread use. However, indoor air conditioner units installed on the wall or ceiling often feature side-directed airflow. During heating, the density of hot air is low, and this side-directed airflow causes the hot air to rise, preventing it from reaching users in the lower areas of the room. This results in uneven temperature distribution within the room, causing the upper part to feel hotter than the lower part, and a poor user experience, particularly for those prone to cold hands and feet.

[0003] In the prior art, in order to achieve the switching of the airflow direction of the air conditioner indoor unit, an air conditioner indoor unit and an air conditioner are disclosed. The air conditioner indoor unit includes a housing and a rotating air duct assembly. The housing has a first air outlet and a second air outlet; the rotating air duct assembly is disposed within the housing, and the rotating air duct assembly is rotatable relative to the housing to enable the air conditioner indoor unit to switch between a first air outlet mode and a second air outlet mode. When the air conditioner indoor unit is in the first air outlet mode, air from outside the housing enters through the first air outlet and is discharged from the second air outlet after passing through the rotating air duct assembly. When the air conditioner indoor unit is in the second air outlet mode, air from outside the housing enters through the second air outlet and is discharged from the first air outlet after passing through the rotating air duct assembly. The housing includes a fixed shell portion and a movable shell portion. The movable shell portion is movable in a direction away from the fixed shell portion, and the movable range allows the rotating air duct assembly to rotate freely within the housing. The rotating air duct assembly includes a centrifugal wind wheel assembly or an axial flow wind wheel assembly.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] Existing rotating duct assemblies for reversible air supply air conditioners require additional rotational clearance. When installed in small indoor units, the centrifugal impeller assembly can easily interfere with the volute and the inner wall of the indoor unit casing during rotation, causing the indoor unit to operate poorly. Summary of the Invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiment provides an air-conditioning indoor unit, wherein the rotation of the rotating shaft drives the impeller to rotate about a first rotation center, and the rotation of the sealing partition drives the volute to rotate about a second rotation center. The distance between the second rotation center and the first rotation center can be adjusted by an adjustment mechanism. In order to ensure the air supply performance of the existing air-conditioning indoor unit, the volute needs to be made as large as possible. However, since the volute profile is a non-circular structure, if the volute is installed in the air-conditioning indoor unit housing, it is easy to cause interference when the volute rotates. By adjusting the relative position of the volute, the present application can meet the needs of small-sized air-conditioning indoor units while avoiding the problem of motion interference.

[0008] In some embodiments, an air conditioner indoor unit includes a housing, a rotor assembly, a volute assembly, and an adjustment mechanism. A connecting plate is fixed within the housing; the rotor assembly includes a rotating shaft and a rotor, wherein the rotating shaft is fixedly provided through the rotor and rotatably disposed within the housing. Rotation of the rotating shaft drives the rotor to rotate about a first rotation center. The volute assembly includes a sealing baffle and a volute. The volute covers the rotor and is fixedly connected to the sealing baffle. The sealing baffle is rotatably connected to the connecting plate and can move in a first direction. Rotation of the sealing baffle drives the volute to rotate about a second rotation center. The adjustment mechanism is disposed on the connecting plate. During rotation of the sealing baffle, the adjustment mechanism can drive the sealing baffle to displace relative to the connecting plate in the first direction to adjust the distance between the second rotation center and the first rotation center. The first direction is a direction away from the interference between the volute and the housing.

[0009] In some optional embodiments, the side panels and bottom plate of the shell are respectively provided with perpendicular side air vents and downwind air vents, and the sealing partition is rotated to enable the air-conditioning indoor unit to switch between a first air outlet mode and a second air outlet mode. In the first air outlet mode, wind enters from the side air vents and exits from the downwind air vents; in the second air outlet mode, wind enters from the downwind air vents and exits from the side air vents; wherein, in the first air outlet mode or the second air outlet mode, the second rotation center coincides with the first rotation center, and the volute is located concentrically with the wind wheel; during the switching process between the first air outlet mode and the second air outlet mode, the adjustment mechanism adjusts the distance between the second rotation center and the first rotation center, so that the volute deviates from the wheel center position of the wind wheel.

[0010] In some optional embodiments, the first direction refers to a direction perpendicular to the bottom plate; or a direction perpendicular to the side plate.

[0011] In some optional embodiments, the air conditioner indoor unit further includes a power assembly. The power assembly includes a first drive device, a driving gear, and a driven gear. The first drive device is fixed to the connecting plate and includes a drive output end; the driving gear is disposed on the drive output end; the driven gear meshes with the driving gear, and the driven gear passes through the connecting plate and is fixedly connected to the sealing diaphragm. The first drive device drives the driving gear to rotate, which in turn drives the driven gear to rotate, so that the driven gear drives the sealing diaphragm to rotate relative to the connecting plate.

[0012] In some optional embodiments, the driven gear includes a gear body, gear teeth, and a connecting column. The gear teeth are located at the head of the gear body and mesh with the driving gear. The gear teeth include a first arcuate tooth segment and a second arcuate tooth segment. The second arcuate tooth segment is located between the two first arcuate tooth segments, and the tooth top circle diameter of the second arcuate tooth segment is larger than the tooth top circle diameter of the first arcuate tooth segment. The connecting column is fixedly connected to the sealing partition. The tooth top circle center of the first arcuate tooth segment coincides with the tooth top circle center of the second arcuate tooth segment, and the tooth top circle centers of the two arcuate tooth segments are both located on the connecting column. The driven gear has the function of an adjustment mechanism, and the distance between the second rotation center and the first rotation center can be adjusted during rotation.

[0013] In some optional embodiments, the gear body is sector-shaped, and the sector angle θ thereof is in the range of 75°≤θ≤85°.

[0014] In some optional embodiments, the tooth surface of the gear tooth includes a tooth top and a tooth root, and the driven gear rotates to make the gear tooth gradually transition from the tooth root to the tooth top.

[0015] In some optional embodiments, the adjustment mechanism further includes a buffer mechanism, comprising a buffer body and an elastic member. The buffer body and the driving gear are located on either side of the driven gear. The elastic member is located on the buffer body and is configured to provide a damping force to dampen displacement during displacement of the sealing diaphragm, thereby limiting meshing between the driving gear and the driven gear. The driving gear is located on an extension of the elastic direction of the elastic member.

[0016] In some optional embodiments, the air conditioner indoor unit also includes a bearing, which is movably arranged on the connecting plate. The bearing includes a bearing inner ring and a bearing outer ring. The bearing inner ring is fixedly sleeved on the connecting column, and the bearing outer ring is fixedly connected to the buffer body. The rotation of the driven gear can drive the bearing to move in the first direction.

[0017] In some optional embodiments, the buffer body includes an arc-shaped frame and a protruding column. The arc-shaped frame includes an inner arc surface and an outer arc surface arranged concentrically, the inner arc surface being fixedly attached to the outer ring of the bearing; the protruding column is fixed to the outer arc surface; and the buffer member includes a spring, one end of which is sleeved on the protruding column.

[0018] In some optional embodiments, a limiting hole is provided in the connecting plate, the connecting column is passed through the limiting hole, and the gear body and the sealing partition are located on both sides of the connecting plate; wherein, the other end of the spring abuts against the inner wall of the limiting hole, and the limiting hole is used to provide a running track for the connecting column, so that the sector gear can drive the volute to deviate from the center of the wind wheel during rotation, and can return the volute to a position concentric with the wind wheel under the action of the elastic force of the spring.

[0019] In some optional embodiments, the maximum eccentricity when the volute rotates is the radial distance between the top circle of the second arc-shaped tooth segment and the top circle of the first arc-shaped tooth segment; wherein the length of the limiting hole in the first direction is greater than or equal to the maximum eccentricity when the volute rotates.

[0020] In some optional embodiments, the following dimensional relationship exists between some components of the air conditioner indoor unit: h=k*D, k∈[2.5%,5.5%]; where h is the maximum eccentricity of the volute during rotation, and D is the diameter of the impeller.

[0021] In some optional embodiments, the inner spacing of the limiting holes in the direction perpendicular to the elastic direction of the spring is greater than or equal to the outer diameter of the outer ring of the bearing; or, the inner spacing of the limiting holes in the direction perpendicular to the elastic direction of the spring is greater than or equal to the spacing between the two end portions of the arc-shaped bar frame.

[0022] In some optional embodiments, the air conditioner indoor unit further includes a baffle and a second drive device. The baffle includes a pivot shaft, through which the baffle is pivotally connected to the sealing baffle. The second drive device is fixed to the sealing baffle and is configured to drive the pivot shaft to axially rotate, thereby driving the baffle to rotate. The baffle is configured to isolate the inlet and outlet airflows of the volute.

[0023] In some optional embodiments, the air-conditioning indoor unit also includes a control unit, which is configured to, during the process of switching from the second air outlet mode to the first air outlet mode, first control the baffle to rotate relative to the sealing partition by a first preset angle, then control the sealing partition to drive the baffle as a whole to rotate by a second preset angle, and then control the baffle to rotate relative to the sealing partition by a third preset angle; during the process of switching from the first air outlet mode to the second air outlet mode, first control the baffle to rotate relative to the sealing partition by a third preset angle, then control the sealing partition to drive the baffle as a whole to rotate by the second preset angle, and then control the baffle to rotate relative to the sealing partition by the first preset angle; wherein, during the process of the sealing partition driving the baffle to rotate, the second rotation center first gradually deviates from the first rotation center, and then gradually adjusts back to the position of the first rotation center.

[0024] The air conditioner indoor unit provided by the embodiments of the present disclosure can achieve the following technical effects:

[0025] The air conditioner indoor unit includes a housing, a wind wheel assembly, a volute assembly, and an adjustment assembly. A connecting plate is fixed in the housing, and an adjustment mechanism is provided on the connecting plate. The wind wheel assembly includes a rotating shaft and a wind wheel. The rotating shaft is fixedly provided with the wind wheel and is rotatably provided in the housing. Rotation of the rotating shaft can drive the wind wheel to rotate about a first rotation center. The volute assembly includes a sealing partition and a volute. The sealing partition is fixedly provided with the volute and is rotatably connected to the connecting plate. Rotation of the sealing partition can drive the volute to rotate about a second rotation center. The adjustment mechanism is provided on the connecting plate. During rotation of the sealing partition, the adjustment mechanism can drive the sealing partition to displace relative to the connecting plate in a first direction to adjust the distance between the second rotation center and the first rotation center, wherein the first direction is away from the interference direction between the volute and the housing. By providing an adjustment mechanism that can adjust the rotation center of the volute, the problem of interference between the volute and the inner wall of the housing when operating in a small-sized air conditioner indoor unit can be avoided.

[0026] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0028] Figure 1 is an exploded schematic diagram of a partial structure of an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0029] Figure 2 is a schematic diagram of a partial structure of an air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0030] Figure 3 is a schematic diagram of the overall structure of the buffer mechanism and bearing provided in an embodiment of the present disclosure;

[0031] Figure 4 Schematic diagram of the overall structure of the sealing partition and the baffle provided in the embodiment of the present disclosure;

[0032] Figure 5 is another partial structural diagram of the air conditioner indoor unit provided by an embodiment of the present disclosure;

[0033] Figure 6 is a partial structural diagram of another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0034] Figure 7 is another partial structural diagram of another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0035] Figure 8It is a schematic diagram of the overall structure of the driven gear provided by an embodiment of the present disclosure.

[0036] Reference numerals:

[0037] 1: Housing; 101: Side air outlet; 102: Downwind air outlet; 2: Sealing baffle; 21: Limiting hole; 22: Avoidance gap; 3: Volute; 41: First driving device; 42: Driving gear; 43: Driven gear; 5: Rotating shaft; 6: Wind wheel; 7: Baffle; 71: Pivot shaft; 8: Second driving device; 9: Bearing; 10: Fixed seat; 11: Fixed frame; 12: Third driving device; 13: Connecting plate; 131: Avoidance guide rail; 14: Buffer mechanism; 141: Buffer body; 142: Elastic member. DETAILED DESCRIPTION

[0038] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0039] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0040] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0041] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0042] Unless otherwise stated, the term "plurality" means two or more.

[0043] 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 means: A or B.

[0044] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0046] Combine Figure 1-8 As shown, an embodiment of the present disclosure provides an air conditioner indoor unit.

[0047] The air conditioner indoor unit in this application includes a wall-mounted air conditioner indoor unit and a duct-type air conditioner indoor unit. The embodiment of this disclosure will be described in detail using the duct-type air conditioner indoor unit as an example.

[0048] The traditional duct-type air conditioner indoor unit can be equipped with a rotating air duct assembly to have two air outlet modes: one is that the downwind port 102 takes in air and the side port 101 discharges air; the other is that the side port 101 takes in air and the downwind port 102 discharges air. The housing 1 includes a fixed housing portion and a movable housing portion. The movable housing portion can move in a direction away from the fixed housing portion, and the movement range allows the rotating air duct assembly to rotate freely within the housing 1. The rotating air duct assembly includes a centrifugal wind wheel assembly. Although the existing duct-type air conditioner indoor unit can realize the air outlet switching and discharge, the entire air conditioner indoor unit occupies a large space and cannot meet the space requirements of the narrow ceiling in a low-rise building. If it is installed on a small-sized air conditioner indoor unit, in order to ensure the air supply performance of the unit, the volute 3 needs to be made as large as possible. However, since the contour of the volute 3 is a non-circular structure, interference occurs at the bottom of the volute 3 when it rotates, which in turn causes the air conditioner indoor unit to freeze or even malfunction.

[0049] The air conditioner indoor unit provided by the embodiment of the present disclosure includes a housing 1, a wind wheel assembly, a volute assembly and an adjustment mechanism. A connecting plate 13 is fixed in the housing 1, and an adjustment mechanism is provided on the connecting plate 13; the wind wheel assembly includes a rotating shaft 5 and a wind wheel 6, the rotating shaft 5 is fixedly penetrated by the wind wheel 6, and the rotating shaft 5 is rotatably provided in the housing 1, and the rotation of the rotating shaft 5 can drive the wind wheel 6 to rotate around a first rotation center; the volute assembly includes a sealing partition 2 and a volute 3, the sealing partition 2 is fixedly provided with the volute 3, the sealing partition 2 is rotatably connected to the connecting plate 13 and can move along a first direction, and the rotation of the sealing partition 2 can drive the volute 3 to rotate around a second rotation center; during the rotation of the sealing partition 2, the adjustment mechanism can drive the sealing partition 2 to move relative to the connecting plate 13 in the first direction to adjust the distance between the second rotation center and the first rotation center, wherein the first direction is the interference direction away from the volute and the housing.

[0050] Specifically, the rotating shaft 5 drives the wind wheel 6 to rotate around the first rotation center, and the first rotation center is the axis where the axis of the rotating shaft 5 is located. The position of the first rotation center is fixed. When the air-conditioning indoor unit is in standby mode, the second rotation center coincides with the first rotation center, that is, the rotation center point of the wind wheel 6 is the rotation center point of the volute 3. The air-conditioning indoor unit needs to switch between different air outlet modes. During the switching process, the position of the second rotation center is constantly changing, so as to adapt to the needs of small-sized air-conditioning indoor units. It is understandable that as the top position of the volute 3 starts to rotate, the outer contour gradually decreases, and the top space becomes larger and larger. Therefore, a variable rotation center solution is adopted, and the volute 3 moves upward while rotating, so that the internal space of the unit can be fully utilized to ensure the size of the fan and the air supply performance of the unit. It is understandable that the air-conditioning indoor unit can also move upward first and then rotate. When it is necessary to set up a solution in which the volute 3 rotates and moves upward at the same time, an adjustment mechanism of a gear system with adjustable spacing can be used; when it is necessary to set up a solution in which the volute 3 moves upward first and then rotates, it can be achieved by combining a gear set and a push rod. There is no specific limitation on the adjustment mechanism here, as long as the spacing between the first rotation center and the second rotation center can be adjusted.

[0051] Optionally, vertical side air vents 101 and downwind air vents 102 are respectively provided on the side panels and bottom panels of the shell 1. The sealing partition 2 rotates to enable the air-conditioning indoor unit to switch between a first air outlet mode and a second air outlet mode. In the first air outlet mode, wind enters through the side air vent 101 and exits through the downwind air vent 102; in the second air outlet mode, wind enters through the downwind air vent 102 and exits through the side air vent 101; wherein, in the first air outlet mode or the second air outlet mode, the second rotation center coincides with the first rotation center, and the volute 3 is located concentrically with the wind wheel 6; during the switching process between the first air outlet mode and the second air outlet mode, the adjustment mechanism adjusts the distance between the second rotation center and the first rotation center, so that the volute 3 deviates from the center position of the wind wheel 6.

[0052] Specifically, when the air conditioner indoor unit is operating in a heating mode, it is in a first air outlet mode, with air entering through the side air vent 101 and exiting through the lower air vent 102. The air outlet direction of the air conditioner indoor unit is downward. Since hot air is lighter, it easily floats at the top of the room. By exiting downward, the hot air can be delivered to the human body area, thereby improving the comfort level of the user's area. When the air conditioner indoor unit is operating in a cooling mode, it is in a second air outlet mode, with air entering through the lower air vent 102 and exiting through the side air vent 101. By exiting from the side, the cold air can be dropped from top to bottom, making the cooling air supply more uniform. When the air conditioner indoor unit is discharging air, the volute 3 is in a stationary state. At this time, the adjustment mechanism does not function, and the second rotation center coincides with the first rotation center. When the air-conditioning indoor unit switches the wind direction, the volute 3 rotates so that the volute air outlet faces the side air outlet 101 or the downwind air outlet 102 of the air-conditioning indoor unit. During the rotation of the volute 3, the adjustment mechanism continuously adjusts the space between the bottom of the volute 3 and the inner wall of the air-conditioning indoor unit housing 1 to prevent the volute 3, which is similar to the volute shell structure, from interfering with the inner wall during the rotation process, thereby causing the air-conditioning indoor unit to freeze and stop. During the rotation of the volute 3, the position of the first rotation center is fixed, and the distance between the second rotation center and the first rotation center gradually increases and then gradually decreases. In this way, there is no need to provide additional avoidance space for the rotation of the volute 3, and the air supply performance and operational stability of the air-conditioning indoor unit can be guaranteed.

[0053] Optionally, the first direction refers to a direction perpendicular to the bottom plate of the housing 1; or a direction perpendicular to the side plate of the housing 1. The first wind direction can be selected specifically based on the installation location of the air conditioner indoor unit. It is understandable that when the air conditioner indoor unit is installed on the ceiling as a ducted air conditioner, due to limited ceiling space, the thickness of the ducted air conditioner is required to be relatively high. For thinner ducted air conditioners, the bottom of the volute 3 is prone to interference with the inner wall of the bottom plate of the air conditioner indoor unit. Therefore, the first direction of the ducted air conditioner is a direction perpendicular to the bottom plate of the housing 3.

[0054] Optionally, the air conditioner indoor unit further includes a power assembly. The power assembly includes a first drive device 41, a driving gear 42, and a driven gear 43. The first drive device 41 is fixed to the connecting plate 13 and includes a drive output end. The driving gear 42 is disposed on the drive output end. The driven gear 43 meshes with the driving gear 42 and passes through the connecting plate 13 and is fixedly connected to the sealing diaphragm 2. The first drive device 41 drives the driving gear 42 to rotate, which in turn drives the driven gear 43 to rotate, causing the driven gear 43 to rotate the sealing diaphragm 2 relative to the connecting plate 13. Specifically, connecting plates 13 are fixed to both side walls of the air conditioner indoor unit housing 1, and the sealing diaphragm 2 is rotatably disposed between the two connecting plates 13. The driven gear 43 and the sealing diaphragm 2 are located on either side of one of the connecting plates 13 and are fixedly connected to the sealing diaphragm 2. The first drive device 41 drives the driving gear 42 to rotate, which in turn drives the driven gear 43 to rotate, causing the sealing diaphragm 2 to rotate relative to the connecting plate 13.

[0055] Optionally, the driven gear 43 includes a gear body, gear teeth, and a connecting column. The gear teeth are located at the head of the gear body and mesh with the driving gear 42. The gear teeth include a first arcuate tooth segment and a second arcuate tooth segment. The second arcuate tooth segment is located between the two first arcuate tooth segments, and the tooth tip circle diameter of the second arcuate tooth segment is larger than the tooth tip circle diameter of the first arcuate tooth segment. The connecting column is fixedly connected to the sealing partition 2. The tooth tip circle center of the first arcuate tooth segment and the tooth tip circle center of the second arcuate tooth segment coincide with each other, and the tooth tip circle centers of both are located on the connecting column. The driven gear 43 has the function of an adjustment mechanism, and the distance between the second rotation center and the first rotation center can be adjusted during rotation. The gear body is fan-shaped, and its fan angle θ ranges from 75°≤θ≤85°.

[0056] Specifically, the driven gear 43 comprises a gear body, gear teeth, a cam, and a connecting post. The gear body is fan-shaped, with gear teeth located at the head of the gear body, meshing with the driving gear 42. The cam is located at the tail of the gear body. The connecting post is fixedly connected to the sealing diaphragm 2. The connecting post serves as the center of the pitch circle of the gear teeth. The gear teeth have a first end and a second end. When the driving gear 42 engages the first end, the air conditioner indoor unit operates in the first airflow mode. When the driving gear 42 engages the second end, the air conditioner indoor unit operates in the second airflow mode. Compared to conventional air conditioner indoor units with reversible air supply, this application eliminates the need for additional components, such as micro-switches, to switch between different airflow modes, saving component costs and internal space in the air conditioner indoor unit. The provision of the cam allows for more space on the connecting plate 13 to facilitate the installation or clearance of other components. The connecting post is located at the center of the pitch circle of the gear teeth, enabling axial rotation of the sealing diaphragm 2 and volute 3 about the line containing the center of the circle.

[0057] During the switching process between the first air outlet mode and the second air outlet mode, the driving gear 42 drives the driven gear 43 to rotate. Among them, the first arc-shaped tooth segment close to the first end is the first tooth segment, and the first arc-shaped tooth segment close to the second end is the third tooth segment. During the rotation of the driving gear 42, it is engaged with the first tooth segment, the second arc-shaped tooth segment and the third tooth segment in sequence; or, it is engaged with the third tooth segment, the second arc-shaped tooth segment and the first tooth segment in sequence. The tooth top circle radius of the second arc-shaped tooth segment is larger than the tooth top circle radius of the first arc-shaped tooth segment. In this way, during the rotation of the volute 3, the rotation center of the volute 3 first moves up along the first direction, and then gradually returns to its original position, thereby avoiding the problem of interference between the bottom of the volute and the inner wall of the bottom plate of the air-conditioning indoor unit during the rotation of the volute 3.

[0058] In conventional air conditioner indoor units, when switching modes, the rotor assembly needs to rotate within a range of 80°-100° or 170°-190° relative to the housing 1, resulting in a large space requirement for air conditioner indoor units with reversible air supply. In the present application, the sector angle θ of the gear body is set within a range of 75°≤θ≤85°. Only a rotation within a range of 75°-85° is required to achieve rotational switching between the vertically arranged side air outlet 101 and the downwind air outlet 102.

[0059] When the air conditioner indoor unit is in the first air outlet mode, the angle between the plane where the volute air outlet is located and the first base plate is between 5° and 10°, and the air enters through the side air outlet 101 and exits through the lower air outlet 102. When the air conditioner indoor unit is in the second air outlet mode, the angle between the plane where the volute air outlet is located and the first base plate is between 80° and 85°, and the air enters through the lower air outlet 102 and exits through the side air outlet 101. Therefore, the volute 3 of the present application only needs to rotate at a small angle to switch the air outlet between the two vertical air outlets, and there is no need to reserve a space for the rotation of the volute 3, so that the air conditioner indoor unit can switch the air outlet within a space with a thickness of 200mm. The air conditioner indoor unit of the present application has a small space occupancy rate, further solving the problem of being unable to install an air conditioner indoor unit with reversing air outlet due to the small ceiling space. Preferably, the sector angle θ of the gear body is 79°, so that the duct-type air conditioner indoor unit can have better air outlet performance within a space with a thickness of 200mm.

[0060] Optionally, the air conditioner indoor unit further includes a bearing 9, which is movably mounted on the connecting plate 13. The bearing 9 includes an inner ring and an outer ring. The inner ring is fixedly mounted on the connecting column, and the outer ring is fixedly connected to the buffer body. Rotation of the driven gear 43 drives the bearing 9 to rotate in the first direction. This prevents friction generated when the sealing diaphragm 2 rotates relative to the connecting plate 13, thereby preventing unnecessary damage to components. It also prevents deformation of the buffer member in the direction of rotation of the volute 3 during rotation of the volute 3.

[0061] Optionally, the adjustment mechanism also includes a buffer mechanism 14. The buffer mechanism 14 includes a buffer body 141 and an elastic member 142 located on the buffer body, and the buffer body 141 and the driving gear 42 are located on both sides of the driven gear 43; the elastic member 142 is located on the buffer body 141, and the elastic member 142 is used to provide a damping force to damp the displacement during the displacement of the sealing partition 2 to limit the meshing of the driving gear 42 and the driven gear 43; wherein, the driving gear 42 is on the extension line of the elastic direction of the elastic member 142. In this way, the problem of the driven gear 43 deviating from the driving gear 42 can be avoided, so that the two are always in a meshing transmission relationship. The elastic direction of the elastic member 142 is on the extension line of the wheel center of the driven gear 43 and the wheel center of the driving gear 42. In this way, the elastic member 142 can adjust the spacing more stably.

[0062] Optionally, the buffer body includes an arc-shaped bar frame and a convex column. The arc-shaped bar frame includes an inner arc surface and an outer arc surface arranged concentrically, the inner arc surface is fixedly fitted on the outer ring of the bearing; the convex column is fixed on the outer arc surface; wherein the buffer member includes a spring, one end of which is sleeved on the convex column. The arc-shaped bar frame is sleeved on the outer bearing 9 of the connecting column of the sector gear and is located on the side away from the driving gear 42. There are multiple convex columns, and springs are sleeved on the multiple convex columns. The length of the spring in the natural state is much greater than the length of the convex column. One end of the spring is on the convex column and pressed on the outer arc surface, and the other end of the spring abuts against the limiting hole 21 opened in the connecting plate 13, thereby adjusting the displacement of the sealing partition 2 in the vertical direction, and then adjusting the rotation center position of the volute 3, avoiding the problem of operation interference during the rotation of the volute 3, and improving the operation stability and air outlet performance of the air-conditioning indoor unit.

[0063] Optionally, the connecting plate 13 is provided with a limiting hole 21, the connecting column is provided with the limiting hole 21, and the gear body and the sealing partition 2 are located on both sides of the connecting plate 13; wherein, the other end of the spring abuts against the inner wall of the limiting hole 21, and the limiting hole 21 is used to provide a running track for the connecting column, so that the volute 3 is driven to deviate from the wheel center of the wind wheel 6 during the rotation of the sector gear, and the volute 3 can be returned to a concentric position with the wind wheel 6 under the action of the elastic force of the spring. In this way, when the air conditioner indoor unit is outputting air, the second rotation center and the first rotation center coincide with each other, so that the rotation axis 5 of the volute 3 and the wind wheel 6 coincide with each other, thereby improving the air supply stability of the air conditioner indoor unit. During the switching process, the volute 3 can be rotated and moved upward, saving space and avoiding the problem of interference between the bottom of the volute 3 and the inner wall of the housing 1.

[0064] Optionally, the maximum eccentricity of the volute 3 during rotation is the radial spacing between the top circle of the second arc-shaped tooth segment and the top circle of the first arc-shaped tooth segment; wherein, the length of the limiting hole 21 in the first direction is greater than or equal to the maximum eccentricity of the volute 3 during rotation, so as to provide avoidance space for the movement of the bearing.

[0065] Optionally, the following dimensional relationships exist between some components of the air conditioner indoor unit: h = k*D, k∈[2.5%,5.5%]; h is the maximum eccentricity of the volute 3 during rotation, and D is the diameter of the impeller 6. The maximum eccentricity of the volute 3 during rotation is defined by the formula: h = sd1 - sd0, where the radius of the addendum circle of the first arcuate tooth segment is sd0, and the radius of the addendum circle of the second arcuate tooth segment is sd1. This ensures that the driving gear 42 and the driven gear 43 are in a meshing transmission state, and the maximum eccentricity of the volute 3 during rotation can be better controlled based on the size of the impeller 6 and its teeth, thereby effectively utilizing the internal space of the air conditioner indoor unit.

[0066] Optionally, the limiting holes 21 are located on the connecting plate surface, and the spacing between the holes in the direction perpendicular to the spring's elasticity is greater than or equal to the outer diameter of the outer ring of the bearing 9; or, the limiting holes 21 are located on the connecting plate surface, and the spacing between the holes in the direction perpendicular to the spring's elasticity is greater than or equal to the spacing between the two ends of the arcuate bar frame. This allows the second rotation center to be offset only in the vertical direction relative to the first rotation center, thereby improving the stability of the air conditioner indoor unit.

[0067] Optionally, the tooth surface of the gear teeth includes a tooth top and a tooth root. The sector gear rotates so that the gear teeth gradually transition from the tooth root to the tooth top, so that the sector gear meshing with the driving gear can smoothly transition from the first arcuate tooth segment to the second arcuate tooth segment, or from the second arcuate tooth segment to the first arcuate tooth segment. The spring cooperates with the gear teeth to cause eccentricity during rotation, and the spring force causes the volute 3 to return to its initial position.

[0068] Optionally, the sealing partition 2 is provided with a plurality of avoidance gaps 22, and the air outlets of the plurality of volutes 3 are snapped onto the plurality of avoidance gaps 22 one by one. The sealing partition 2 includes a first partition and a second partition. The first partition is provided with a avoidance gap 22, and the air outlet of the volute is fixed on the avoidance gap 22; the second partition is vertically fixedly connected to the first partition; wherein, there are two second partitions, which are respectively located on both sides of the air inlet of the volute 3, and the first partition is located between the two second partitions. In this way, the connection between the first partition and the second partition can be made more reliable and the positioning more accurate. The sealing partition 2 not only plays a certain bearing and supporting role for the plurality of volutes 3, and prevents the shell 1 from deforming. It can also drive the volute 3 to rotate, so that the air outlet of the air conditioner indoor unit can be switched without the need for additional air duct switching elements.

[0069] Optionally, multiple centrifugal fans are provided, with multiple impellers 6 fixedly mounted on the rotating shaft 5. Axial rotation of the rotating shaft 5 drives the multiple impellers 6. The rotating shaft 5 is independent of the sealing baffle 2, allowing the volute 3 and impellers 6 to operate independently, achieving a variety of air delivery modes. The number of centrifugal fans is not specifically limited and can be set to any desired number based on actual usage.

[0070] Optionally, the volute 3 includes an upper volute portion and a lower volute portion, the upper volute portion includes a volute air outlet and an upper shell surface, and the upper volute portion is integrally formed. Multiple upper volute portions are fixedly clamped on multiple avoidance notches 22 of the sealing partition 2, and the lower volute portion is connected to the upper volute portion in a one-to-one correspondence. The lower volute portion and the upper volute portion can be connected in the form of a snap, or other detachable connection forms can be used, which are not limited here. In order to strengthen the strength of the upper volute portion, an L-shaped fixing plate can be added, and the two side edges of the L-shaped fixing plate are respectively fixed to the air outlet position of the upper volute portion and the sealing partition 2.

[0071] Optionally, the air conditioner indoor unit further includes a baffle 7 and a second drive device 8. The baffle 7 includes a pivot shaft 71, via which the baffle 7 is pivotally connected to the sealing baffle 2. The second drive device 8 is fixed to the sealing baffle 2 and is configured to drive the pivot shaft 71 for axial rotation, thereby driving the baffle 7 to rotate. The baffle 7 is configured to isolate the inlet and outlet airflows of the volute 3. Specifically, the sealing baffle 2 separates the volute outlet from the air inlets on both sides of the volute 3. The lower portion of the sealing baffle 2 is pivotally connected to the baffle 7 via the pivot shaft 71. The sealing partition 2 can drive the volute 3 to rotate so that the air outlet direction of the volute outlet is switched from the downwind outlet 102 to the side wind outlet 101. Then, by adjusting the rotation angle of the baffle 7, the air duct forms a complete air duct curve, thereby separating the air inlet duct and the air outlet duct, avoiding the problem of turbulence and turbulence caused by mutual interference due to the existence of gaps between the air inlet duct and the air outlet duct, which is beneficial to reducing the noise in the air conditioner indoor unit and improving the air supply performance of the air conditioner indoor unit.

[0072] Optionally, the baffle 7 is an arc-shaped plate, and the arc angle of the baffle 7 matches the curvature of the air duct. The rotatable baffle 7 enables the air conditioner indoor unit to form a complete air duct curve in both the first air outlet mode and the second air outlet mode, which not only avoids the mutual influence between the air inlet and outlet airflows of the volute 3, but also optimizes the air supply duct and improves the air supply performance.

[0073] Optionally, the connecting plate 13 is provided with a bypass guide 131, which is an arc-shaped groove. The sealing partition 2 drives the second drive device 8 to rotate, and the bypass guide 131 provides a track for the rotation of the second drive device 8. The bypass guide 131 also serves to limit the second drive device 8 when switching between the first and second air outlet modes. The arc angle of the bypass guide 131 ranges from 75° to 85°. This arc-shaped groove allows for greater air duct space within the 200mm thickness of the air conditioner indoor unit.

[0074] Optionally, the air conditioner indoor unit further includes a control unit configured to, during a switch from the second air outlet mode to the first air outlet mode, first control the baffle 7 to rotate relative to the sealing partition 2 by a first preset angle, then control the sealing partition 2 to drive the baffle 7 to rotate as a whole by a second preset angle, and then control the baffle 7 to rotate relative to the sealing partition 2 by a third preset angle; and during a switch from the first air outlet mode to the second air outlet mode, first control the baffle 7 to rotate relative to the sealing partition 2 by a third preset angle, then control the sealing partition 2 to drive the baffle 7 to rotate as a whole by the second preset angle, and then control the baffle 7 to rotate relative to the sealing partition 2 by the first preset angle; wherein, during the process of the sealing partition 2 driving the baffle 7 to rotate, the second rotation center first gradually deviates from the first rotation center and then gradually adjusts back to the position of the first rotation center. In this way, the problem of airflow turbulence can be avoided, and at the same time, within the thickness of the entire unit of 200 mm, the height of the volute 3 can be set within the range of 180 mm to 190 mm without causing interference problems, thereby improving the air outlet performance of the air conditioner indoor unit. Among them, the first rotation angle range is 55°-65°, the second rotation angle range is 75°-85°, and the third rotation angle range is 5°-15°.

[0075] Optionally, the air conditioner indoor unit further includes a heat exchanger and a water receiving pan. The heat exchanger is tilted and disposed within the heat exchange chamber; the water receiving pan is fixed to the first base plate and is located below the heat exchanger. When air is discharged from the air conditioner indoor unit through the side air outlet 101, the baffle 7 seamlessly fits the outer surface of the water receiving pan.

[0076] Specifically, the heat exchanger includes a base plate and a plurality of fins. The plurality of fins are perpendicular to the side air outlet 101. In the first air outlet mode, the volute 3 discharges air obliquely downward from the downwind outlet 102; in the second air outlet mode, since the rotation angle of the volute 3 is an acute angle, the air outlet direction at the volute air outlet is sideways and downward, which easily causes the cold air to blow directly at the user, resulting in a poor user experience. By obliquely setting the plurality of fins of the heat exchanger on the surface of the base plate of the heat exchanger so that the plurality of fins are perpendicular to the first side plate, the cold air can be discharged horizontally at the side air outlet 101, thereby increasing the distance between the airflow at the side air outlet 101 and the human body, and preventing the air from the duct-type air conditioner indoor unit from directly facing the user's body.

[0077] When the duct-type air conditioner indoor unit is operating in a heating mode, the air outlet direction is downward. Since hot air is light, it easily floats at the top of the room. By discharging the air downward, the hot air can be delivered to the human body area, making the space in the user's area more comfortable. When the duct-type air conditioner indoor unit is operating in a cooling mode, the air outlet direction is sideways. During cooling, the cold air falls from top to bottom, making the cooling air supply more uniform. In the first air outlet mode, the baffle 7 can be rotated to abut the outer edge of the water receiving tray, thereby completely separating the outlet airflow and the inlet airflow of the volute 3. In this way, the problem of air turbulence is avoided and the air supply performance of the air conditioner indoor unit is improved.

[0078] Optionally, the air conditioner indoor unit further includes a sealing gasket fixed to the sealing partition 2, which can drive the sealing gasket to rotate. The housing 1 further includes a second bottom plate, which is parallel to the first bottom plate. When the air conditioner indoor unit discharges air through the side air vent 101, the sealing gasket abuts the second bottom plate. In the first air outlet mode, the upper shell surface of the volute 3 is offset from the first bottom plate, resulting in a gap between the sealing partition 2 and the first bottom plate. By adding a sealing gasket to fill this gap, the inlet and outlet airflows of the volute 3 are better isolated.

[0079] Optionally, the air conditioner indoor unit further includes a sealing gasket and a top plate. The top plate is parallel to the bottom plate, and the sealing gasket is fixed to the second bottom plate. When the air conditioner indoor unit discharges air through the side air vent 101, the sealing partition 2 abuts against the sealing gasket, thereby sealing the gap between the sealing partition 2 and the top plate, preventing turbulence in the inlet and outlet airflows and improving air supply performance.

[0080] Optionally, the air conditioner indoor unit further includes a fixing base 10 and a third driving device 12. The fixing base 10 is fixed to the housing 1, and the rotating shaft 5 passes through the fixing base 10; the third driving device 12 is used to drive the rotating shaft 5 to rotate axially, thereby rotating the wind wheel 6 to output wind.

[0081] Optionally, the air conditioner indoor unit further includes a mounting bracket 11 and a rolling bearing 9. The mounting bracket 11 is fixed to the housing 1; the outer ring of the rolling bearing 9 is fixedly connected to the mounting bracket 11, while the inner ring is fixedly connected to the rotating shaft 5. The mounting bracket 11 is fixed to the housing 1 of the air conditioner indoor unit and is embedded with the rolling bearing 9. The outer ring of the rolling bearing 9 is fixedly connected to the mounting bracket 11, while the inner ring of the bearing 9 is fixedly connected to the rotating shaft 5, thereby rotatably connecting the rotating shaft 5 to the housing 1. The mounting bracket 11 and the fixing base 10 jointly bear the load of the rotating shaft 5, thereby ensuring more stable operation of the rotating shaft 5.

[0082] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner indoor unit, characterized in that: include: a housing in which a connecting plate is fixed; A wind wheel assembly includes a rotating shaft and a wind wheel, wherein the rotating shaft is fixedly passed through the wind wheel and is rotatably disposed in the housing, and the rotation of the rotating shaft can drive the wind wheel to rotate around a first rotation center; A volute assembly, comprising a sealing baffle and a volute, wherein the volute cover is provided on the impeller, and the volute is fixedly connected to the sealing baffle, the sealing baffle is rotatably connected to the connecting plate and is movable in a first direction, and the rotation of the sealing baffle can drive the volute to rotate about a second rotation center; and, an adjustment mechanism, disposed on the connecting plate, capable of driving the sealing diaphragm to move relative to the connecting plate in the first direction during the rotation of the sealing diaphragm, so as to adjust the distance between the second rotation center and the first rotation center; The first direction is an interference direction away from the volute and the housing.

2. The air conditioner indoor unit according to claim 1, characterized in that: The side panels and bottom panel of the housing are respectively provided with vertical side air vents and downwind air vents. The sealing partition is rotated to switch the air conditioner indoor unit between a first air outlet mode and a second air outlet mode. In the first air outlet mode, air enters through the side air vents and exits through the downwind air vents. In the second air outlet mode, air enters through the downwind air vents and exits through the side air vents. Among them, in the first air outlet mode or the second air outlet mode, the second rotation center coincides with the first rotation center, and the volute is located concentrically with the wind wheel; during the switching process between the first air outlet mode and the second air outlet mode, the adjustment mechanism adjusts the distance between the second rotation center and the first rotation center, so that the volute deviates from the center position of the wind wheel.

3. The air conditioner indoor unit according to claim 2, characterized in that: The first direction includes: perpendicular to the direction of the base plate; or perpendicular to the direction of the side panels.

4. The air conditioner indoor unit according to claim 1, characterized in that: Also included is a power assembly, the power assembly comprising: A first driving device is fixed to the connecting plate, wherein the first driving device includes a driving output end; A driving gear; provided on the drive output end; and, A driven gear meshing with the driving gear, the driven gear passing through the connecting plate and fixedly connected to the sealing partition; The first driving device drives the driving gear to rotate, thereby driving the driven gear to rotate, so that the driven gear drives the sealing partition to rotate relative to the connecting plate.

5. The air conditioner indoor unit according to claim 4, characterized in that: The driven gear comprises: Gear body; Gear teeth, located at the head of the gear body, meshing with the driving gear, the gear teeth including a first arcuate tooth segment and a second arcuate tooth segment, the second arcuate tooth segment being located between the two first arcuate tooth segments, the tooth tip circle diameter of the second arcuate tooth segment being larger than the tooth tip circle diameter of the first arcuate tooth segment; and, A connecting post, fixedly connected to the sealing diaphragm, wherein the center of the tooth tip circle of the first arc-shaped tooth segment coincides with the center of the tooth tip circle of the second arc-shaped tooth segment, and the centers of the tooth tip circles of the two are both located on the connecting post; The driven gear has the function of the adjustment mechanism, and can adjust the distance between the second rotation center and the first rotation center during the rotation process.

6. The air conditioner indoor unit according to claim 5, characterized in that: The gear body is sector-shaped, and the sector angle θ thereof is in the range of 75°≤θ≤85°.

7. The air conditioner indoor unit according to claim 5, characterized in that: The tooth surface of the gear tooth includes a tooth top and a tooth root, and the driven gear rotates to make the gear tooth gradually transition from the tooth root to the tooth top.

8. The air conditioner indoor unit according to claim 5, characterized in that: The adjustment mechanism further includes a buffer mechanism, which includes: a buffer body, which and the driving gear are located on both sides of the driven gear; and an elastic member located on the buffer body, the elastic member being used to provide a damping force to damp the displacement during the displacement of the sealing diaphragm, so as to limit the engagement between the driving gear and the driven gear; Wherein, the driving gear is on the extension line of the elastic direction of the elastic member.

9. The air conditioner indoor unit according to claim 8, characterized in that: Also includes: A bearing is movably disposed on the connecting plate, the bearing comprising an inner bearing ring and an outer bearing ring, the inner bearing ring is fixedly sleeved on the connecting column, and the outer bearing ring is fixedly connected to the buffer body; The driven gear rotates to drive the bearing to move in the first direction.

10. The air conditioner indoor unit according to claim 9, characterized in that: The buffer body comprises: An arc-shaped frame, comprising an inner arc surface and an outer arc surface arranged concentrically, wherein the inner arc surface is fixedly attached to the outer ring of the bearing; and A convex column fixed on the outer arc surface; Wherein, the elastic member comprises a spring, one end of which is sleeved on the convex column.

11. The air conditioner indoor unit according to claim 10, characterized in that: The connecting plate is provided with a limiting hole, the connecting column passes through the limiting hole, and the gear body and the sealing partition are located on both sides of the connecting plate; The other end of the spring abuts against the inner wall of the limiting hole, and the limiting hole is used to provide a moving track for the connecting column so that the volute can be driven to deviate from the center of the wind wheel during the rotation of the driven gear, and can return the volute to a position concentric with the wind wheel under the action of the elastic force of the spring.

12. The air conditioner indoor unit according to claim 11, characterized in that: The maximum eccentricity of the volute during rotation is the radial distance between the addendum circle of the second arc-shaped tooth segment and the addendum circle of the first arc-shaped tooth segment; Wherein, the length of the limiting hole in the first direction is greater than or equal to the maximum eccentricity of the volute when rotating.

13. The air conditioner indoor unit according to claim 12, characterized in that: The following size relationships exist between some components of the air conditioner indoor unit: h=k*D, k∈[2.5%,5.5%]; Wherein, h is the maximum eccentricity of the volute during rotation, and D is the diameter of the wind wheel.

14. The air conditioner indoor unit according to claim 11, characterized in that: The inner spacing of the limiting holes in the direction perpendicular to the elastic direction of the spring is greater than or equal to the outer diameter of the bearing outer ring; or The spacing between the limiting holes in the direction perpendicular to the elastic direction of the spring is greater than or equal to the spacing between the two end portions of the arc-shaped strip frame.

15. The air conditioner indoor unit according to claim 3, characterized in that: Also includes: a baffle, comprising a pivot shaft, wherein the baffle is pivotally connected to the sealing partition via the pivot shaft; and, A second driving device is fixed on the sealing partition, and is used to drive the pivot shaft to rotate axially to drive the baffle to rotate. The baffle is used to isolate the inlet airflow and the outlet airflow of the volute.

16. The air conditioner indoor unit according to claim 15, characterized in that: Also includes: The control unit is configured to, during a process of switching from the second air outlet mode to the first air outlet mode, first control the baffle to rotate relative to the sealing baffle by a first preset angle, then control the sealing baffle to drive the baffle to rotate as a whole by a second preset angle, and then control the baffle to rotate relative to the sealing baffle by a third preset angle; during a process of switching from the first air outlet mode to the second air outlet mode, first control the baffle to rotate relative to the sealing baffle by the third preset angle, then control the sealing baffle to drive the baffle to rotate as a whole by the second preset angle, and then control the baffle to rotate relative to the sealing baffle by the first preset angle; In the process of the sealing partition driving the baffle to rotate, the second rotation center first gradually deviates from the first rotation center, and then gradually adjusts back to the position of the first rotation center.

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