Indoor unit of air conditioner

Abstract

The invention relates to the technical field of air conditioners and discloses an air conditioner indoor unit. The air conditioner indoor unit comprises a shell, a first air inlet, a second air inlet, an air conditioner air outlet, a heat exchange air duct and an auxiliary air inlet duct are defined in the shell, the two ends of the heat exchange air duct communicate with the first air inlet and the air conditioner air outlet correspondingly, an air inlet of the auxiliary air inlet duct communicates with the second air inlet, and an air outlet of the auxiliary air inlet duct is connected with the heat exchange air duct; indoor air without heat exchange can flow into the auxiliary air inlet duct through the second air inlet; and the sealing device is arranged in the auxiliary air inlet duct to open or seal the auxiliary air inlet duct, the auxiliary air inlet duct communicates with the heat exchange air duct under the condition that the sealing device opens the auxiliary air inlet duct, and the auxiliary air inlet duct is disconnected from the heat exchange air duct under the condition that the sealing device closes the auxiliary air inlet duct. According to the air conditioner indoor unit, the situation that indoor air and heat exchange air are mixed can be reduced under the condition of normal air outlet, and the air outlet effect of the air conditioner indoor unit is improved.

Description

Technical Field

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

[0002] With the development of society and the continuous improvement of people's living standards, various air conditioners have become one of the indispensable electrical equipment in people's daily lives. Various air conditioners can lower or raise the ambient temperature when the ambient temperature is too high or too low, so that people are in a more comfortable environment. However, in the process of using the air conditioner, since the air blown out by the air conditioner is obtained by heat exchange through the heat exchanger, especially in the cooling mode, the temperature of the air after heat exchange is low. When the cold or hot air after heat exchange blows directly on the user, it will make the user feel uncomfortable and affect the user's experience.

[0003] An air-conditioning indoor unit is disclosed in the related technology, which includes a base, a shell, a heat exchanger, a heat exchange fan and an indoor air module. The base is provided with a heat exchange air outlet, and the shell is installed on the base. The shell is provided with an indoor air suction port, a heat exchange air inlet and an indoor air supply port corresponding to the position of the heat exchange air outlet; the heat exchanger and the heat exchange fan are both installed on the base and located in the shell; the indoor air module is installed in the shell and has an indoor air inlet and an indoor air outlet, the indoor air inlet corresponds to the position of the indoor air suction port, the indoor air outlet is arranged adjacent to the heat exchange air outlet and is located above the heat exchange air outlet, the indoor air flowing out of the indoor air outlet is mixed with the heat exchange air flowing out of the heat exchange air outlet and flows out from the indoor air supply port.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the related art, the indoor air outlet is adjacent to the heat exchange air outlet, and the heat exchange air blown out of the heat exchange air outlet is mixed with the indoor air blown out of the indoor air outlet and flows out from the indoor air supply outlet. However, when the user does not need to blow out the mixed air, the air flow blown out of the heat exchange air outlet will still drive part of the indoor air to flow in the indoor air module due to the wind pressure when it reaches the drainage outlet, and flows out from the indoor air outlet, mixing with the heat exchange air, reducing the normal air outlet effect of the air conditioner indoor unit.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] 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 components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiment provides an air-conditioning indoor unit, so that the air-conditioning indoor unit can achieve mixed air outlet and normal air outlet (ie, non-mixed air outlet), and improve the air outlet effect of the air-conditioning indoor unit.

[0009] According to the embodiment provided in the present application, an air-conditioning indoor unit is provided, including: a shell, defining a first air inlet, a second air inlet, an air-conditioning outlet, a heat exchange duct and an auxiliary air inlet duct, wherein the two ends of the heat exchange duct are respectively connected with the first air inlet and the air-conditioning outlet, the air inlet of the auxiliary air inlet duct is connected with the second air inlet, the air outlet of the auxiliary air inlet duct is connected with the heat exchange duct, and the indoor air that has not been heat exchanged can flow into the auxiliary air inlet duct through the second air inlet; a sealing device is arranged in the auxiliary air inlet duct to open or seal the auxiliary air inlet duct, when the sealing device opens the auxiliary air inlet duct, the auxiliary air inlet duct is connected with the heat exchange duct, and when the sealing device closes the auxiliary air inlet duct, the auxiliary air inlet duct is disconnected from the heat exchange duct.

[0010] In some optional embodiments, the air conditioner indoor unit also includes: a cross-flow fan, which is arranged in the heat exchange air duct, and the axial side wall of the cross-flow fan is provided with an auxiliary air inlet connected to the interior of the cross-flow fan, and the air outlet of the auxiliary air inlet duct is arranged opposite to the auxiliary air inlet, and when the sealing device opens the auxiliary air inlet duct, the auxiliary air inlet is connected to the auxiliary air inlet duct.

[0011] In some optional embodiments, the air conditioner indoor unit further includes: an air mixing fan, disposed in the auxiliary air inlet duct or the auxiliary air inlet, so as to drive the indoor air to flow along the auxiliary air inlet duct when the sealing device opens the auxiliary air inlet duct.

[0012] In some optional embodiments, the air conditioner indoor unit further includes a first driving device, a driving end of the first driving device is connected to the cross-flow fan to drive the cross-flow fan to rotate;

[0013] The air mixing fan is connected to the driving end of the first driving device, and the air mixing fan rotates synchronously with the cross-flow fan; or,

[0014] The air conditioner indoor unit also includes a second driving device, which is connected to the sealing device, and a driving end of the second driving device is connected to the air mixing fan to drive the air mixing fan to rotate.

[0015] In some optional embodiments, the sealing device and the air mixing fan are arranged in sequence along the flow direction of the air in the auxiliary air inlet duct.

[0016] In some optional embodiments, the shell includes: a duct shell, defining a first duct; a volute, connected to the duct shell, defining a second duct and a third duct, the second duct is arranged on the axial side wall of the volute, and the two ends of the third duct are respectively connected to the first air inlet and the air-conditioning outlet, the auxiliary air inlet duct includes the first air duct and the second air duct, and the heat exchange duct includes the third air duct; when the sealing device opens the auxiliary air inlet duct, one end of the first air duct is connected to the second air inlet, and the two ends of the second air duct are respectively connected to the other end of the first air duct and the third air duct; wherein, the cross-flow fan is located in the third air duct, and the sealing device is arranged in the first air duct or the second air duct.

[0017] In some optional embodiments, the aperture area of ​​the air outlet of the auxiliary air inlet duct is greater than or equal to the aperture area of ​​the auxiliary air inlet.

[0018] In some optional embodiments, the orthographic projections of the auxiliary air inlet on the air outlet of the auxiliary air inlet duct are all located within the air outlet of the auxiliary air inlet duct.

[0019] In some optional embodiments, the side wall of the auxiliary air inlet extends toward the air outlet of the auxiliary air inlet duct, the air inlet end of the auxiliary air inlet is flush with the air outlet end of the auxiliary air inlet duct, or the air inlet end of the auxiliary air inlet extends into the air outlet end of the auxiliary air inlet duct.

[0020] In some optional embodiments, the sealing device includes: a fixed plate connected to the inner wall of the auxiliary air inlet duct and provided with a vent; a sealing plate connected to the fixed plate and capable of moving relative to the vent to open or seal the vent.

[0021] The air conditioner indoor unit provided by the embodiment of the present disclosure can achieve the following technical effects:

[0022] In this embodiment, the two ends of the heat exchange duct are respectively connected to the first air inlet and the air outlet of the air conditioner, and the heat exchange air can flow in the heat exchange duct. The air inlet of the auxiliary air inlet duct is connected to the second air inlet, and the indoor air that has not been heat exchanged can flow into the auxiliary air inlet duct through the second air inlet. The air outlet of the auxiliary air inlet duct is connected to the heat exchange duct. The sealing device is arranged in the auxiliary air inlet duct, and when the sealing device opens the auxiliary air inlet duct, the auxiliary air inlet duct is connected to the heat exchange duct. In this way, when the mixed air is discharged, the indoor air can flow into the heat exchange duct through the auxiliary air inlet duct, and the heat exchange air in the heat exchange duct is mixed and blown out through the air outlet of the air conditioner to realize the mixed air discharge of the indoor unit of the air conditioner. When the sealing device closes the auxiliary air inlet duct, the auxiliary air inlet duct is disconnected from the heat exchange duct, so as to reduce the indoor air flowing into the heat exchange duct under the influence of the wind pressure of the heat exchange duct. The disclosed embodiment can realize mixed air discharge of the air conditioner indoor unit, and can also realize normal air discharge of the air conditioner indoor unit, that is, only heat exchange air that is not mixed with indoor air is blown out. Moreover, under the condition of normal air discharge, the embodiment can reduce the mixing of indoor air and heat exchange air, thereby improving the air discharge effect of the air conditioner indoor unit.

[0023] 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

[0024] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0025] Figure 1 is a structural schematic diagram of an air-conditioning indoor unit from a perspective provided by an embodiment of the present disclosure;

[0026] Figure 2 is a structural schematic diagram of an air-conditioning indoor unit provided by an embodiment of the present disclosure from another perspective;

[0027] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0028] Figure 4 is a partial structural schematic diagram of an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0029] Figure 5 is a partial cross-sectional structural schematic diagram of another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0030] Figure 6 is a partial cross-sectional structural schematic diagram of yet another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0031] Figure 7 is a partial cross-sectional structural schematic diagram of yet another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0032] Figure 8 is a partial structural diagram of another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0033] Fig. 9 yes Figure 8 A schematic diagram of the enlarged structure of part B;

[0034] Fig.10 is a partial structural diagram of another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0035] Fig.11 is a partial structural diagram of another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0036] Fig.12 is a partial cross-sectional structural schematic diagram of yet another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0037] Fig.13 is a partial structural diagram of another air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0038] Fig.14 It is a partial structural diagram of another air-conditioning indoor unit provided in an embodiment of the present disclosure.

[0039] Reference numerals:

[0040] 100, housing; 110, heat exchange air duct; 111, heat exchanger; 112, first air inlet; 113, air conditioning outlet; 120, auxiliary air inlet duct; 121, avoidance slot; 130, volute; 131, first axial side wall; 132, second air duct; 133, third air duct; 200, cross-flow fan; 210, auxiliary air inlet; 240, connecting plate; 241, center plate; 2411, limiting hole; 242, connecting spokes; 300, air mixing fan; 310, Connecting shaft; 320, fan blades; 330, central axis; 400, first driving device; 410, second driving device; 500, sealing device; 510, fixed plate; 511, vent; 512, fixed shaft; 513, sub-fixed plate; 514, connecting protrusion; 520, sealing plate; 521, rotating plate; 5211, annular rack; 522, sub-sealing plate; 5221, arc rack; 530, first gear; 540, second driving assembly; 550, second gear. DETAILED DESCRIPTION

[0041] In order to be able to understand the features and technical contents 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 attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the 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.

[0042] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0043] 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 have 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.

[0044] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0045] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0047] The present disclosure provides an indoor unit of an air conditioner, such as Figures 1 to 14As shown, the air conditioner indoor unit includes a housing 100 and a sealing device 500. The housing 100 defines a first air inlet 112, a second air inlet, an air conditioning outlet 113, a heat exchange duct 110, and an auxiliary air inlet duct 120. The two ends of the heat exchange duct 110 are respectively connected to the first air inlet 112 and the air conditioning outlet 113, the air inlet of the auxiliary air inlet duct 120 is connected to the second air inlet, and the air outlet of the auxiliary air inlet duct 120 is connected to the heat exchange duct 110. The indoor air that has not been heat exchanged can flow into the auxiliary air inlet duct 120 through the second air inlet. The sealing device 500 is arranged in the auxiliary air inlet duct 120 to open or seal the auxiliary air inlet duct 120. When the sealing device 500 opens the auxiliary air inlet duct 120 , the auxiliary air inlet duct 120 is connected to the heat exchange duct 110 ; when the sealing device 500 closes the auxiliary air inlet duct 120 , the auxiliary air inlet duct 120 is disconnected from the heat exchange duct 110 .

[0048] In this embodiment, the two ends of the heat exchange duct 110 are respectively connected to the first air inlet 112 and the air conditioning outlet 113, and the heat exchange air can flow in the heat exchange duct 110. The air inlet of the auxiliary air inlet duct 120 is connected to the second air inlet, and the indoor air that has not been heat exchanged can flow into the auxiliary air inlet duct 120 through the second air inlet. The air outlet of the auxiliary air inlet duct 120 is connected to the heat exchange duct 110. The sealing device 500 is arranged in the auxiliary air inlet duct 120. When the sealing device 500 opens the auxiliary air inlet duct 120, the auxiliary air inlet duct 120 is connected to the heat exchange duct 110. In this way, when the mixed air is discharged, the indoor air can flow into the heat exchange duct 110 through the auxiliary air inlet duct 120, and the indoor air can be mixed with the heat exchange air in the heat exchange duct 110 and blown out through the air conditioning outlet 113 to achieve the mixed air discharge of the air conditioning indoor unit. When the sealing device 500 closes the auxiliary air inlet duct 120, the auxiliary air inlet duct 120 is disconnected from the heat exchange duct 110, so as to reduce the indoor air flowing into the heat exchange duct 110 under the influence of the wind pressure of the heat exchange duct 110. The disclosed embodiment can realize the mixed air discharge of the air conditioner indoor unit, and can also realize the normal air discharge of the air conditioner indoor unit, that is, only the heat exchange air that is not mixed with the indoor air is blown out. In addition, the embodiment can reduce the mixing of the indoor air and the heat exchange air under the condition of normal air discharge, thereby improving the air discharge effect of the air conditioner indoor unit.

[0049] In some optional embodiments, such as Figures 5 to 10 As shown, the sealing device 500 includes a fixing plate 510 and a sealing plate 520. The fixing plate 510 is connected to the inner side wall of the auxiliary air inlet duct 120, and the fixing plate 510 is provided with a vent 511. The sealing plate 520 is connected to the fixing plate 510, and the sealing plate 520 can move relative to the vent 511 to open or seal the vent 511.

[0050] With this optional embodiment, the fixing plate 510 is connected to the inner wall of the auxiliary air inlet duct 120, and the sealing plate 520 is connected to the fixing plate 510, so that the sealing device 500 is arranged in the auxiliary air inlet duct 120. The sealing plate 520 can move relative to the vent 511 to open or seal the vent 511. In this way, when the sealing plate 520 opens the vent 511, the indoor air that has not been heat exchanged can flow in the auxiliary air inlet duct 120 through the vent 511, that is, the sealing device 500 opens the auxiliary air inlet duct 120. When the sealing plate 520 seals the vent 511, the sealing plate 520 blocks the flow of indoor air, that is, the sealing device 500 seals the auxiliary air inlet duct 120.

[0051] Furthermore, the fixing plate 510 includes a fixing shaft 512 and a sub-fixing plate 513, and the fixing shaft 512 is disposed in the auxiliary air inlet duct 120. Along the radial direction of the fixing shaft 512, two ends of the sub-fixing plate 513 are respectively connected to the outer side wall of the fixing shaft 512 and the inner side wall of the auxiliary air inlet duct 120, and the sub-fixing plate 513 is configured with one or more vents 511. When there are multiple vents 511, the multiple vents 511 are arranged at intervals along the circumferential direction of the fixing shaft 512.

[0052] The sealing plate 520 includes a rotating plate 521 and a sub-sealing plate 522. The rotating plate 521 is arranged in an annular shape and is sleeved on the outside of the fixed shaft 512. The rotating plate 521 is rotatably connected to the fixed shaft 512. One end of the sub-sealing plate 522 is connected to the rotating plate 521. The number of the sub-sealing plates 522 is the same as the number of the vents 511 and corresponds one to one. The sealing plate 520 can rotate relative to the vents 511 to open or seal the vents 511.

[0053] In this embodiment, the rotating plate 521 is rotatably connected to the fixed shaft 512 , one end of the sub-sealing plate 522 is connected to the rotating plate 521 , and the sub-sealing plate 522 can rotate synchronously with the rotating plate 521 relative to the vent 511 to open or seal the vent 511 .

[0054] In a specific embodiment, in combination Figures 5 to 7 As shown, an annular rack 5211 is provided at the end of the rotating plate 521, and the sealing device 500 also includes a first driving assembly and a first gear 530, the first driving assembly is connected to the fixed shaft 512, the first gear 530 is connected to the driving end of the first driving assembly, and the first gear 530 is meshed with the annular rack 5211.

[0055] In this embodiment, the first drive assembly is connected to the fixed shaft 512 to fix the first drive assembly. The driving end of the first drive assembly is connected to the first gear 530, and the first drive assembly drives the first gear 530 to rotate. The first gear 530 is engaged with the annular rack 5211 of the rotating plate 521, and the rotation of the first gear 530 drives the annular rack 5211 to rotate, thereby driving the rotating plate 521 to rotate relative to the fixed shaft 512. The sub-sealing plate 522 is connected to the rotating plate 521, and the rotating plate 521 rotates to drive the sub-sealing plate 522 to rotate relative to the vent 511, thereby opening or closing the vent 511.

[0056] In another alternative embodiment, in combination Figure 8 and Fig. 9 As shown, the side wall of the auxiliary air inlet duct 120 is provided with an avoidance groove 121, the other end of a sub-sealing plate 522 extends into the avoidance groove 121, and the other end of the sub-sealing plate 522 is provided with an arc-shaped rack 5221. The sealing device 500 also includes a second drive assembly 540 and a second gear 550, and the second drive assembly 540 is connected to the housing 100. The second gear 550 is connected to the driving end of the second drive assembly 540, and the second gear 550 is meshed with the arc-shaped rack 5221.

[0057] With this optional embodiment, the side wall of the auxiliary air inlet duct 120 is provided with an avoidance groove 121, one end of a sub-sealing plate 522 is connected to the rotating plate 521, the other end of the sub-sealing plate 522 extends into the avoidance groove 121, and the other end of the sub-sealing plate 522 is provided with an arc-shaped rack 5221. The driving end of the second driving assembly 540 is connected to the second gear 550, and the second driving assembly 540 drives the second gear 550 to rotate. The second gear 550 is meshed with the arc-shaped rack 5221, and the rotation of the second gear 550 drives the arc-shaped rack 5221 to rotate, that is, the sub-sealing plate 522 provided with the arc-shaped rack 5221 rotates. Multiple sub-sealing plates 522 are all connected to the rotating plate 521, and the rotation of the sub-sealing plate 522 provided with the arc-shaped rack 5221 drives the rotating plate 521 to rotate, and the rotating plate 521 rotates to drive multiple sub-sealing plates 522 to rotate synchronously, so as to realize the opening or sealing of the vent 511.

[0058] Further, along the flow direction of the gas in the auxiliary air inlet duct 120 , the sub-sealing plate 522 and the fixing plate 510 are arranged in sequence.

[0059] In this embodiment, the side wall of the auxiliary air inlet duct 120 is provided with an avoidance groove 121, the other end of the sub-sealing plate 522 extends into the avoidance groove 121, and the sealing plate 520 and the fixing plate 510 are arranged in sequence. That is to say, along the flow direction of the gas in the auxiliary air inlet duct 120, the avoidance groove 121, the fixing plate 510 and the cross-flow fan 200 are arranged in sequence. In this way, when the sub-sealing plate 522 seals the vent 511, the occurrence of indoor wind entering the interior of the cross-flow fan 200 through the avoidance groove 121 can be reduced, thereby improving the sealing effect of the sealing device 500 on the auxiliary air inlet duct 120. That is, when mixed air is not required, the amount of indoor wind entering the cross-flow fan 200 for mixed air is reduced.

[0060] When the sub-sealing plate 522 opens the vent 511, the sub-sealing plate 522 overlaps with the fixing plate 510 to expose the vent 511, so that the vent 511 can be ventilated. When the sub-sealing plate 522 seals the vent 511, the sub-sealing plate 522 covers the top of the vent 511 to shield the vent 511 and seal the vent 511.

[0061] Optionally, the width of the sub-sealing plate 522 is greater than or equal to the width of the vent 511 at the corresponding position. In this way, when the sub-sealing plate 522 moves to the position of the vent 511, the vent 511 can be sealed, thereby improving the sealing effect of the sealing device 500 on the auxiliary air inlet duct 120.

[0062] In some optional embodiments, such as Figures 4 to 10 As shown, the two ends of the sub-fixed plate 513 are respectively connected to the side wall of the fixed shaft 512 and the inner wall of the auxiliary air inlet duct 120, and there are multiple sub-fixed plates 513, which are arranged at intervals along the circumference of the fixed shaft 512, and two adjacent sub-fixed plates 513, the fixed shaft 512 and the auxiliary air inlet duct 120 enclose the ventilation port 511.

[0063] In this embodiment, the two ends of the sub-fixed plate 513 are respectively connected to the side wall of the fixed shaft 512 and the inner wall of the auxiliary air inlet duct 120, and multiple sub-fixed plates 513 are arranged at intervals along the circumference of the fixed shaft 512, so that two adjacent sub-fixed plates 513, the outer wall of the fixed shaft 512 and the inner wall of the auxiliary air inlet duct 120 can enclose the vent 511, so that the indoor air in the auxiliary air inlet duct 120 can flow through the vent 511 when passing through the sealing device 500.

[0064] Further, the width of the sub-sealing plate 522 is smaller than or equal to the width of the sub-fixing plate 513 at the corresponding position, and the width of the vent 511 is smaller than or equal to the width of the sub-fixing plate 513 at the corresponding position.

[0065] When the sub-sealing plate 522 opens the vent 511, the sealing plate 520 overlaps with the sub-fixed plate 513 at the corresponding position, and the width of the sub-sealing plate 522 is less than or equal to the width of the sub-fixed plate 513 at the corresponding position, thereby reducing the situation where the sub-sealing plate 522 still partially blocks the vent 511 when the vent 511 is opened.

[0066] For example, Figures 3 to 14 As shown, the air-conditioning indoor unit also includes a cross-flow fan 200, which is arranged in the heat exchange duct 110. The axial side wall of the cross-flow fan 200 is provided with an auxiliary air inlet 210 connected to the interior of the cross-flow fan 200. The air outlet of the auxiliary air inlet duct 120 is arranged opposite to the auxiliary air inlet duct 120. When the sealing device 500 opens the auxiliary air inlet duct 120, the auxiliary air inlet 210 is connected to the auxiliary air inlet duct 120.

[0067] In this embodiment, the cross-flow fan 200 is arranged in the heat exchange air duct 110, and the cross-flow fan 200 can drive the heat exchange air to flow in the heat exchange air duct 110. Further, the air conditioner indoor unit also includes a heat exchanger 111, and the heat exchanger 111 is arranged in the heat exchange air duct 110, and along the flow direction of the heat exchange air, the heat exchanger 111 and the cross-flow fan 200 are arranged in sequence. In this way, the indoor air enters the heat exchange air duct 110 under the drive of the cross-flow fan 200, and exchanges heat with the heat exchanger 111 in the heat exchange air duct 110 to form the heat exchange air. The heat exchange air continues to flow along the heat exchange air duct 110 to enter the inside of the cross-flow fan 200.

[0068] The axial side wall of the cross-flow fan 200 is provided with an auxiliary air inlet 210 communicating with the interior of the cross-flow fan 200. When the auxiliary air inlet duct 120 is opened by the sealing device 500, the auxiliary air inlet 210 communicates with the auxiliary air inlet duct 120. Another indoor air flows into the auxiliary air inlet duct 120 through the second air inlet, flows into the interior of the cross-flow fan 200 through the auxiliary air inlet duct 120 and the auxiliary air inlet 210, and is mixed with the heat exchange air inside the cross-flow fan 200 to form mixed air. The mixed air flows out of the cross-flow fan 200, and flows out of the housing 100 through the air conditioning outlet 113, so as to realize the mixed air outlet of the air conditioning indoor unit.

[0069] The auxiliary air inlet 210 is arranged on the axial side wall of the cross-flow fan 200, and the indoor air driven by the air mixing fan 300 is blown into the cross-flow fan 200 along the axial direction of the cross-flow fan 200 through the auxiliary air inlet 210. The heat exchange air passes through the cross-flow fan 200 along the radial direction of the cross-flow fan 200, and the flow direction of the heat exchange air and the indoor air is different, so that the mixing effect of the indoor air and the heat exchange air can be improved in the process of mixing. Thereby, the temperature uniformity of the mixed air blown out by the indoor unit of the air conditioner is improved, and the user experience is improved.

[0070] When the sealing device 500 closes the auxiliary air inlet duct 120, the auxiliary air inlet duct 120 is disconnected from the auxiliary air inlet port 210, and the indoor air that has not been heat exchanged cannot flow from the auxiliary air inlet duct 120 into the auxiliary air inlet port 210 and the heat exchange duct 110, thereby reducing the occurrence of mixing of heat exchange air and indoor air when the air-conditioning indoor unit is discharging air normally, thereby improving the air outlet effect of the air-conditioning indoor unit.

[0071] For example, Figures 5 to 7 , Figures 11 to 14 As shown, the air conditioning indoor unit also includes a mixing fan 300, which is arranged in the auxiliary air inlet duct 120 or the auxiliary air inlet 210 to drive the indoor air to flow along the auxiliary air inlet duct 120 when the sealing device 500 opens the auxiliary air inlet duct 120.

[0072] In a specific embodiment, Figure 5 , Fig.11 and Fig.12 As shown, the air conditioner indoor unit further includes a first driving device 400, the driving end of which is connected to the cross-flow fan 200 to drive the cross-flow fan 200 to rotate. The mixing fan 300 is connected to the driving end of the first driving device 400, and the mixing fan 300 rotates synchronously with the cross-flow fan 200.

[0073] In this embodiment, the cross-flow fan 200 and the mixing fan 300 are both connected to the first driving device 400, and the first driving device 400 can drive the cross-flow fan 200 and the mixing fan 300 to rotate synchronously, so as to achieve mixing of air in the process of the cross-flow fan 200 driving the heat exchange air flow, thereby adjusting the temperature of the air outlet of the air conditioner indoor unit.

[0074] In addition, a sealing device 500 is provided in the auxiliary air inlet duct 120 of the embodiment of the present disclosure. When the air conditioner indoor unit is discharging air normally, even if the cross-flow fan 200 and the mixing fan 300 rotate synchronously, the sealing device 500 can close the auxiliary air inlet duct 120, thereby reducing the situation where the mixing fan 300 continues to drive the indoor air to flow into the heat exchange duct 110 through the auxiliary air inlet duct 120, thereby increasing the proportion of heat exchange air when the air conditioner indoor unit is discharging air normally, and improving the air outlet effect of the air conditioner indoor unit.

[0075] Optionally, the first driving device 400 includes a first driving end and a second driving end that are relatively arranged. The first driving device 400 is arranged between the cross-flow fan 200 and the mixing fan 300. The first driving end is connected to the cross-flow fan 200, and the second driving end is connected to the mixing fan 300 to drive the cross-flow fan 200 and the mixing fan 300 to rotate synchronously.

[0076] Exemplarily, the driving end of the first driving device 400 is connected to the cross-flow fan 200 , and the mixing fan 300 includes a connecting shaft 310 , which is connected to the axial side wall of the cross-flow fan 200 . The cross-flow fan 200 drives the mixing fan 300 to rotate via the connecting shaft 310 .

[0077] In this optional embodiment, the driving end of the first driving device 400 is connected to the cross-flow fan 200, and the first driving device 400 drives the cross-flow fan 200 to rotate. The air mixing fan 300 includes a connecting shaft 310, and the connecting shaft 310 is connected to the axial side wall of the cross-flow fan 200. The rotation of the cross-flow fan 200 drives the air mixing fan 300 to rotate through the connecting shaft 310, thereby realizing the synchronous rotation of the cross-flow fan 200 and the air mixing fan 300. The air mixing fan 300 is connected to the first driving device 400 through the cross-flow fan 200.

[0078] Optionally, the cross-flow fan 200 further includes a connecting plate 240, which is connected to the axial side wall of the cross-flow fan 200 provided with the auxiliary air inlet 210, and the axis of the cross-flow fan 200 is located at the connecting position of the connecting member. The connecting shaft 310 is connected to the connecting position.

[0079] In this optional embodiment, an auxiliary air inlet 210 is provided on an axial side wall of the cross-flow fan 200, a connecting plate 240 is provided on the axial side wall of the cross-flow fan 200 where the auxiliary air inlet 210 is provided, and a connecting shaft 310 is connected to a connecting position of the connecting plate 240. In this way, the connecting shaft 310 and the axis of the cross-flow fan 200 are located on the same straight line, and the connecting shaft 310 extends along the straight line where the axis of the cross-flow fan 200 is located.

[0080] Further, the connecting plate 240 is connected to the inner side wall of the auxiliary air inlet 210, and the connecting plate 240 includes a center plate 241 and one or more connecting spokes 242. The center plate 241 is connected to the connecting shaft 310. The two ends of the connecting spoke 242 are respectively connected to the outer side wall of the center plate 241 and the inner side wall of the auxiliary air inlet 210. In the case where there are multiple connecting spokes 242, the multiple connecting spokes 242 are arranged at intervals along the circumference of the cross-flow fan 200.

[0081] In this optional embodiment, the center plate 241 is connected to the connecting shaft 310, that is, the connecting position is located at the center plate 241. The two ends of the connecting spokes 242 are respectively connected to the outer wall of the center plate 241 and the inner wall of the auxiliary air inlet 210. In the case where there are multiple connecting spokes 242, the multiple connecting spokes 242 are arranged at intervals along the circumference of the cross-flow fan 200. In this way, the indoor wind driven by the air mixing fan 300 can enter the interior of the cross-flow fan 200 through the space between two adjacent connecting spokes 242. In this way, on the basis of the auxiliary air inlet 210 being provided on the axial side wall of the cross-flow fan 200, the cross-flow fan 200 and the air mixing fan 300 can be arranged coaxially through the connecting plate 240, so that the cross-flow fan 200 drives the air mixing fan 300 to rotate synchronously, and when the sealing device 500 opens the auxiliary air inlet duct 120, the indoor wind driven by the air mixing fan 300 can directly flow into the interior of the cross-flow fan 200 through the auxiliary air inlet 210.

[0082] Optionally, along the radial direction of the cross-flow fan 200 and in the direction from the center plate 241 toward the inner wall of the auxiliary air inlet 210 , the width of the connecting spokes 242 gradually increases.

[0083] In this embodiment, the diameter of the center plate 241 is smaller than the inner diameter of the auxiliary air inlet 210, and the width of the connecting spokes 242 gradually increases along the direction from the center plate 241 toward the inner side wall of the auxiliary air inlet 210. In this way, the connection length between the connecting spokes 242 and the inner side wall of the auxiliary air inlet 210 can be increased to improve the connection stability between the connecting spokes 242 and the inner side wall of the auxiliary air inlet 210, thereby increasing the stability of the transmission of the rotational force from the cross-flow fan 200 to the air mixing fan 300, and improving the working stability and reliability of the air conditioner indoor unit.

[0084] In another specific embodiment, Figure 6 and Fig.13 As shown, the air mixing fan 300 is disposed in the auxiliary air inlet 210 , and the air mixing fan 300 includes blades 320 , and the ends of the blades 320 are connected to the inner sidewall of the auxiliary air inlet 210 .

[0085] With this optional embodiment, the air mixing fan 300 is arranged in the auxiliary air inlet 210, and the ends of the blades 320 of the air mixing fan 300 are connected to the inner wall of the auxiliary air inlet 210, so that the air mixing fan 300 is connected to the cross-flow fan 200. When the cross-flow fan 200 rotates, the inner wall of the auxiliary air inlet 210 can drive the blades 320 to rotate, that is, drive the air mixing fan 300 to rotate. Thereby, the indoor air that has not been heat exchanged flows into the inside of the cross-flow fan 200 and mixes with the heat exchange air inside the cross-flow fan 200. In this embodiment, the blades 320 of the air mixing fan 300 are directly connected to the inner wall of the auxiliary air inlet 210, which reduces the use of connecting parts and increases the connection stability of the air mixing fan 300 and the cross-flow fan 200, reduces the production cost of the air conditioner indoor unit, and increases the working stability and reliability of the air conditioner indoor unit.

[0086] Optionally, there are multiple blades 320 , and the air mixing fan 300 further includes a central axis 330 . Along the circumference of the cross-flow fan 200 , the starting ends of the multiple blades 320 are connected to the circumferential side wall of the central axis 330 at intervals.

[0087] Furthermore, the ratio of the inner diameter of the auxiliary air inlet 210 to the outer diameter of the central shaft 330 is in the range of 3 to 4. In this way, the outer diameter of the central shaft 330 is reduced, thereby reducing the area of ​​the auxiliary air inlet 210 occupied by the central shaft 330, increasing the air volume of the indoor air entering the cross-flow fan 200 and the air volume of the air conditioner indoor unit, and improving the ability to regulate the temperature of the heat exchange air.

[0088] Furthermore, the first end of the blade 320 and the second end of the blade 320 are sequentially arranged along the rotation direction of the cross-flow fan 200. In the axial direction of the cross-flow fan 200, the straight-line distance between the first end of the blade 320 and the impeller assembly of the cross-flow fan 200 is smaller than the straight-line distance between the second end of the blade 320 and the impeller assembly.

[0089] In this embodiment, along the axial direction of the cross-flow fan 200, the straight-line distance between the first end of the blade 320 and the impeller assembly is smaller than the straight-line distance between the second end of the blade 320 and the impeller assembly, and the blade 320 is arranged obliquely. In this way, when the impeller rotates, the blade 320 rotates from the first end to the second end, and the blade 320 can drive the air to rotate from the second end along the blade 320 toward the first end, thereby driving the air flow, so that the indoor wind passes through the auxiliary air inlet 210 and enters the interior of the cross-flow fan 200.

[0090] In yet another specific embodiment, Figure 7 , Figure 8 and Fig.14As shown, the air conditioner indoor unit further includes a first driving device 400 and a second driving device 410, wherein the driving end of the first driving device 400 is connected to the cross-flow fan 200 to drive the cross-flow fan 200 to rotate. The second driving device 410 is connected to the sealing device 500, and the driving end of the second driving device 410 is connected to the air mixing fan 300 to drive the air mixing fan 300 to rotate.

[0091] In this optional embodiment, the driving end of the second driving device 410 is connected to the air mixing fan 300 to drive the air mixing fan 300 to rotate, and the driving end of the first driving device 400 is connected to the cross-flow fan 200 to drive the cross-flow fan 200 to rotate. The first driving device 400 and the second driving device 410 drive the cross-flow fan 200 and the air mixing fan 300 to rotate respectively. The air conditioner indoor unit can make the first driving device 400 and the second driving device 410 rotate synchronously as needed, so that the rotation speed of the cross-flow fan 200 is the same as the rotation speed of the air mixing fan 300, and can also make the first driving device 400 and the second driving device 410 rotate asynchronously as needed, so that the rotation speed of the cross-flow fan 200 is different from the rotation speed of the air mixing fan 300, so as to adjust the ratio of indoor air to heat exchange air during air mixing and the air volume of the air conditioner indoor unit. Similarly, the first driving device 400 can be rotated, the second driving device 410 can not be rotated, and the sealing device 500 can seal the auxiliary air inlet duct 120, so that the indoor air without heat exchange cannot flow into the cross-flow fan 200, and no air mixing occurs, so that the air conditioner indoor unit can discharge air normally. In this way, the air conditioner indoor unit can have multiple air outlet modes to meet the user's various air outlet requirements and improve the user's experience.

[0092] The second driving device 410 is connected to the sealing device 500 , so as to fix the second driving device 410 .

[0093] Optionally, the sealing device 500 is disposed in the second air duct 132 , the air conditioner indoor unit further includes a connecting protrusion 514 , the connecting protrusion 514 is connected to the fixing plate 510 , and the second driving device 410 is disposed on the connecting protrusion 514 .

[0094] In this embodiment, the second driving device 410 is connected to the fixing plate 510 via the connecting protrusion 514, and the sealing device 500 can fix the second driving device 410. This can reduce the components used to install the second driving device 410, improve the utilization rate of the components, and reduce the production cost of the air-conditioning indoor unit.

[0095] In this embodiment, when the cross-flow fan 200 further includes a connecting plate 240 and the air mixing fan 300 includes a connecting shaft 310 , the center plate 241 is provided with a limiting hole 2411 , and the connecting shaft 310 is rotatably connected to the center plate 241 to radially position the connecting shaft 310 .

[0096] With this optional embodiment, the connecting shaft 310 of the mixing fan 300 is rotatably connected to the limiting hole 2411 of the center plate 241, so that the limiting hole 2411 can radially limit the connecting shaft 310 to reduce the radial shaking of the mixing fan 300 during rotation, thereby improving the operating stability and reliability of the mixing fan 300.

[0097] Optionally, a bearing is provided in the limiting hole 2411, the limiting hole 2411 is connected to the outer ring of the bearing, the connecting shaft 310 is connected to the inner ring of the bearing, and the outer ring and the inner ring can rotate relative to each other, so that the connecting shaft 310 can rotate relative to the limiting hole 2411 and reduce the rotational friction force of the limiting hole 2411 on the connecting shaft 310.

[0098] Exemplarily, the axis of the cross-flow fan 200 and the axis of the air mixing fan 300 are located on the same straight line. In other words, the cross-flow fan 200 and the air mixing fan 300 are coaxially arranged.

[0099] Optionally, the air mixing fan 300 includes an axial flow fan or a centrifugal fan.

[0100] When the air mixing fan 300 is an axial flow fan, the air outlet of the axial flow fan is arranged opposite to the auxiliary air inlet 210, and the indoor air flowing out of the axial flow fan can directly enter the auxiliary air inlet 210. When the air mixing fan 300 is a centrifugal fan, the centrifugal fan is coaxially arranged with the cross-flow fan 200, and the air outlet of the centrifugal fan is not arranged toward the auxiliary air inlet 210. The housing 100 is also configured with a connecting air duct, and the two ends of the connecting air duct are respectively connected to the air outlet of the centrifugal fan and the auxiliary air inlet 210 to guide the indoor air flowing out of the centrifugal fan to the auxiliary air inlet 210. When the blades 320 of the air mixing fan 300 are connected to the inner side wall of the auxiliary air inlet 210, the blades 320 are blades 320 of the axial flow fan.

[0101] For example, Figures 5 to 7 As shown, along the flow direction of the indoor air in the auxiliary air inlet duct 120, the sealing device 500 and the air mixing fan 300 are arranged in sequence.

[0102] In this embodiment, the sealing device 500 and the air mixing fan 300 are arranged in sequence, so that the sealing device 500 can also reduce the situation where the air mixing fan 300 continues to suck air into the auxiliary air inlet duct 120 when the air conditioner is normally exhausting air, reduce the noise generated by the air conditioner indoor unit, and improve the user experience.

[0103] Further, the air conditioner indoor unit also includes an air duct shell and a volute 130. The air duct shell defines a first air duct. The volute 130 is connected to the air duct shell, and the volute 130 defines a second air duct 132 and a third air duct 133, the second air duct 132 is arranged on the axial side wall of the volute 130, and the two ends of the third air duct 133 are respectively connected to the first air inlet 112 and the air conditioning outlet 113. The auxiliary air inlet duct 120 includes a first air duct and a second air duct 132, and the heat exchange air duct 110 includes a third air duct 133. When the sealing device 500 opens the auxiliary air inlet duct 120, one end of the first air duct is connected to the second air inlet, and the two ends of the second air duct 132 are respectively connected to the other end of the first air duct and the third air duct 133. Among them, the cross-flow fan 200 is located in the third air duct 133, and the sealing device 500 is arranged in the first air duct or the second air duct 132.

[0104] In this embodiment, the cross-flow fan 200 is disposed in the third air duct 133 of the volute 130, so that a vortex can be formed inside the cross-flow fan 200 when the cross-flow fan 200 rotates, thereby driving the heat exchange air to flow. The air mixing fan 300 is disposed on the side of the cross-flow fan 200 where the auxiliary air inlet 210 is provided, and the volute 130 is provided with a second air duct 132, so that the indoor air can pass through the volute 130 and enter the auxiliary air inlet 210, that is, enter the third air duct 133.

[0105] Optionally, the volute 130 includes a first axial side wall 131 , which is disposed opposite to a side wall of the cross-flow fan 200 having the auxiliary air inlet 210 , and the second air duct 132 penetrates the first axial side wall 131 along the axial direction of the cross-flow fan 200 .

[0106] Optionally, the caliber area of ​​the air outlet of the auxiliary air inlet duct 120 is greater than or equal to the caliber area of ​​the auxiliary air inlet 210 .

[0107] In this embodiment, the cross-flow fan 200 is arranged in the heat exchange air duct 110, and when the air outlet of the auxiliary air inlet duct 120 is connected to the auxiliary air inlet 210, the air outlet of the auxiliary air inlet duct 120 is connected to the heat exchange air duct 110. The aperture area of ​​the air outlet of the auxiliary air inlet duct 120 is greater than or equal to the aperture area of ​​the auxiliary air inlet 210, so that the air volume of the indoor air that has not been heat exchanged and flows into the heat exchange air duct 110 can be increased, thereby improving the temperature regulation ability of the heat exchange air and the air volume of the air conditioner indoor unit. In addition, even if the indoor air flowing out of the air outlet of the auxiliary air inlet duct 120 does not flow into the auxiliary air inlet 210, the indoor air can flow into the heat exchange air duct 110, that is, into the third air duct 133, to be mixed with the heat exchange air in the heat exchange air duct 110.

[0108] Further, the orthographic projections of the auxiliary air inlet 210 on the air outlet of the auxiliary air inlet duct 120 are all located within the air outlet of the auxiliary air inlet duct 120 .

[0109] In this embodiment, the auxiliary air inlet 210 is arranged relative to the air outlet of the auxiliary air inlet duct 120 to increase the air intake volume of the indoor air entering the auxiliary air inlet 210, improve the mixing effect of the heat exchange air and the indoor air, and thus improve the air outlet effect of the air conditioner indoor unit.

[0110] Optionally, the side wall of the auxiliary air inlet 210 extends toward the air outlet of the auxiliary air inlet duct 120 , and the air inlet end of the auxiliary air inlet 210 is flush with the air outlet end of the auxiliary air inlet duct 120 , or the air inlet end of the auxiliary air inlet 210 extends into the air outlet end of the auxiliary air inlet duct 120 .

[0111] In this embodiment, the side wall of the auxiliary air inlet 210 extends toward the air outlet of the auxiliary air inlet duct 120, so as to reduce the distance between the auxiliary air inlet 210 and the air outlet of the auxiliary air inlet duct 120, thereby reducing the amount of indoor air flowing out from the distance, increasing the amount of indoor air entering the auxiliary air inlet 210, and improving the mixing effect of heat exchange air and indoor air.

[0112] Furthermore, the side wall of the auxiliary air inlet 210 extends toward the air outlet of the auxiliary air inlet duct 120, thereby increasing the axial length of the side wall of the auxiliary air inlet 210. When the air mixing fan 300 is disposed in the auxiliary air inlet 210, the blades 320 of the air mixing fan 300 can be all located in the auxiliary air inlet 210, so as to reduce the occurrence of indoor air flowing out of the auxiliary air inlet 210, increase the indoor air volume entering the auxiliary air inlet 210, and improve the air mixing effect of the heat exchange air and the indoor air.

[0113] 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 explicitly 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: The housing is defined with a first air inlet, a second air inlet, an air conditioning outlet, a heat exchange duct and an auxiliary air inlet duct, the two ends of the heat exchange duct are respectively connected with the first air inlet and the air conditioning outlet, the air inlet of the auxiliary air inlet duct is connected with the second air inlet, the air outlet of the auxiliary air inlet duct is connected with the heat exchange duct, and the indoor air that has not been heat exchanged can flow into the auxiliary air inlet duct through the second air inlet; The sealing device is arranged in the auxiliary air inlet duct to open or seal the auxiliary air inlet duct. When the sealing device opens the auxiliary air inlet duct, the auxiliary air inlet duct is connected with the heat exchange duct. When the sealing device closes the auxiliary air inlet duct, the auxiliary air inlet duct is disconnected from the heat exchange duct.

2. The air conditioner indoor unit according to claim 1, characterized in that: Also includes: A cross-flow fan is arranged in the heat exchange air duct. The axial side wall of the cross-flow fan is provided with an auxiliary air inlet connected to the interior of the cross-flow fan. The air outlet of the auxiliary air inlet duct is arranged opposite to the auxiliary air inlet. When the sealing device opens the auxiliary air inlet duct, the auxiliary air inlet is connected to the auxiliary air inlet duct.

3. The air conditioner indoor unit according to claim 2, characterized in that: Also includes: The air mixing fan is arranged in the auxiliary air inlet duct or the auxiliary air inlet port to drive the indoor air to flow along the auxiliary air inlet duct when the sealing device opens the auxiliary air inlet duct.

4. The air conditioner indoor unit according to claim 3, characterized in that: The air conditioner indoor unit also includes a first driving device, a driving end of the first driving device is connected to the cross-flow fan to drive the cross-flow fan to rotate; The mixed air fan is connected to the driving end of the first driving device, and the mixed air fan rotates synchronously with the cross-flow fan; or, the air conditioner indoor unit also includes a second driving device, the second driving device is connected to the sealing device, and the driving end of the second driving device is connected to the mixed air fan to drive the mixed air fan to rotate.

5. The air conditioner indoor unit according to claim 3, characterized in that: The sealing device and the air mixing fan are arranged in sequence along the flow direction of the air in the auxiliary air inlet duct.

6. The air conditioner indoor unit according to claim 2, characterized in that: The housing includes: An air duct housing defines a first air duct; A volute is connected to the air duct housing and defines a second air duct and a third air duct, the second air duct is arranged on the axial side wall of the volute, two ends of the third air duct are respectively connected to the first air inlet and the air outlet of the air conditioner, the auxiliary air inlet air duct includes the first air duct and the second air duct, and the heat exchange air duct includes the third air duct; When the sealing device opens the auxiliary air inlet duct, one end of the first air duct is connected to the second air inlet, and both ends of the second air duct are connected to the other end of the first air duct and the third air duct respectively; The cross-flow fan is located in the third air duct, and the sealing device is arranged in the first air duct or the second air duct.

7. The air conditioner indoor unit according to claim 2, characterized in that: The aperture area of ​​the air outlet of the auxiliary air inlet duct is greater than or equal to the aperture area of ​​the auxiliary air inlet.

8. The air conditioner indoor unit according to claim 6, characterized in that: The orthographic projections of the auxiliary air inlet on the air outlet of the auxiliary air inlet duct are all located within the air outlet of the auxiliary air inlet duct.

9. The air conditioner indoor unit according to claim 2, characterized in that: The side wall of the auxiliary air inlet extends toward the air outlet of the auxiliary air inlet duct, and the air inlet end of the auxiliary air inlet is flush with the air outlet end of the auxiliary air inlet duct, or the air inlet end of the auxiliary air inlet extends into the air outlet end of the auxiliary air inlet duct.

10. The air conditioner indoor unit according to any one of claims 1 to 9, characterized in that: The sealing device includes: A fixed plate connected to the inner wall of the auxiliary air inlet duct and provided with a vent; The sealing plate is connected to the fixing plate and can move relative to the vent to open or seal the vent.

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