Air conditioner indoor unit and air conditioner

Abstract

The invention relates to the technical field of air conditioners and discloses an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a shell; the cross-flow fan is arranged in the shell, and an auxiliary air inlet communicating with the interior of the cross-flow fan is formed in the axial side wall of the cross-flow fan; and the air mixing fan is arranged in the shell, an air outlet of the air mixing fan communicates with the auxiliary air inlet, and the air mixing fan can drive indoor air to be mixed with heat exchange air in the cross-flow fan in the cross-flow fan. In the embodiment, indoor air is blown into the cross-flow fan in the axial direction of the cross-flow fan, heat exchange air penetrates through the cross-flow fan in the radial direction of the cross-flow fan, the flowing direction of the heat exchange air is different from that of the indoor air, and therefore the mixing effect can be improved in the mixing process of the indoor air and the heat exchange air. Therefore, the temperature uniformity of the mixed air blown out by the air conditioner indoor unit is improved, and the use experience of a user 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 and an air conditioner. 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 arranged adjacent to the heat exchange air outlet, and the indoor air outlet is located above the heat exchange air outlet. Since the air outlet directions of the indoor air outlet and the heat exchange air outlet are consistent, the indoor air and the heat exchange air cannot be well mixed after flowing out separately, which can easily cause uneven temperature of the blown air, thereby reducing the user experience.

[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 conditioner indoor unit and an air conditioner, which can mix indoor air that has not been heat exchanged by a heat exchanger with heat exchange air, and improve the mixing effect of indoor air and heat exchange air, solve the problem of uneven air outlet temperature of the air conditioner indoor unit, and improve the user experience.

[0009] According to the first embodiment provided in the present application, an air-conditioning indoor unit is provided, including: a shell; a cross-flow fan, arranged in the shell, 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; a mixing fan, arranged in the shell, the air outlet of the mixing fan is connected to the auxiliary air inlet, and the mixing fan can drive the indoor air to mix with the heat exchange air inside the cross-flow fan.

[0010] In some optional embodiments, the number of mixing fans is one or two; when the number of mixing fans is one, an auxiliary air inlet is provided on an axial side wall of the cross-flow fan, and along the axial direction of the cross-flow fan, the mixing fan is arranged on the side of the cross-flow fan provided with the auxiliary air inlet; when the number of mixing fans is two, auxiliary air inlets are provided on two opposite axial side walls of the cross-flow fan, and along the axial direction of the cross-flow fan, the two mixing fans are respectively arranged on two opposite side walls of the cross-flow fan.

[0011] In some optional embodiments, the air conditioner indoor unit further includes: a first drive motor, the cross flow fan and the air mixing fan are both connected to the first drive motor, and the first drive motor drives the cross flow fan and the air mixing fan to rotate synchronously.

[0012] In some optional embodiments, the first driving motor is connected to the crossflow fan, the mixing fan includes a connecting shaft, the connecting shaft is connected to the axial side wall of the crossflow fan, and the crossflow fan drives the mixing fan to rotate via the connecting shaft.

[0013] In some optional embodiments, the first drive motor is connected to the cross-flow fan, the mixing fan is arranged in the auxiliary air inlet, and the mixing fan includes blades, and the ends of the blades are connected to the inner wall of the auxiliary air inlet.

[0014] In some optional embodiments, the air conditioner indoor unit further includes: a second drive motor connected to the cross-flow fan to drive the cross-flow fan to rotate; and a third drive motor connected to the mixed air fan to drive the mixed air fan to rotate.

[0015] In some optional embodiments, the air mixing fan includes an axial flow fan or a centrifugal fan.

[0016] In some optional embodiments, the shell is constructed with a heat exchange duct, a cross-flow fan is arranged in the heat exchange duct, and the air conditioner indoor unit also includes a heat exchanger, which is arranged in the heat exchange duct. The heat exchanger and the cross-flow fan are arranged in sequence along the flow direction of air in the heat exchange duct.

[0017] In some optional embodiments, the cross-flow fan includes: an impeller assembly, including one or more impellers, and when there are multiple impellers, the interiors of the multiple impellers are connected; two end covers, respectively connected to the opposite ends of the impeller assembly, and one or both end covers are provided with auxiliary air inlets.

[0018] According to a second embodiment provided by the present application, an air conditioner is provided, comprising an air conditioner indoor unit as described in any one of the above items.

[0019] The air conditioner indoor unit and air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] In this embodiment, the crossflow fan and the air mixing fan are both arranged in the housing, the crossflow fan can drive the heat exchange air to flow in the housing, and the air mixing fan can drive the indoor air that has not been heat exchanged to flow into the housing. The axial side wall of the crossflow fan is provided with an auxiliary air inlet connected to the inside of the crossflow fan, and the air outlet of the air mixing fan is connected to the auxiliary air inlet, so that the indoor air that has not been heat exchanged can enter the auxiliary air inlet and flow into the inside of the crossflow fan under the drive of the air mixing fan, and mix with the heat exchange air inside the crossflow fan. In this way, the heat exchange air and the indoor air are mixed, so as to adjust the temperature of the air blown out by the indoor unit of the air conditioner. And the indoor unit of the air conditioner includes a crossflow fan and an air mixing fan, so that the air outlet of the indoor unit of the air conditioner can be increased to transfer the cold or heat of the heat exchange air to more air. Thereby increasing or decreasing the temperature of the mixed air blown out by the indoor unit of the air conditioner, reducing the temperature difference between the air blown out by the indoor unit of the air conditioner and the indoor temperature, and improving the comfort of the user. The auxiliary air inlet is arranged on the axial side wall of the crossflow fan, and the indoor air driven by the air mixing fan is blown into the crossflow fan along the axial direction of the crossflow fan through the auxiliary air inlet. The heat exchange air passes through the crossflow fan along the radial direction of the crossflow fan, and the flow direction of the heat exchange air and the indoor air is different, which can improve the mixing effect of the indoor air and the heat exchange air 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.

[0021] 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

[0022] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are considered similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of an air-conditioning indoor unit from a perspective provided in the first embodiment;

[0024] Figure 2 is a structural schematic diagram of an air-conditioning indoor unit provided in Embodiment 1 from another perspective;

[0025] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0026] Figure 4 It is a partial structural schematic diagram of an air conditioner indoor unit provided in Embodiment 1;

[0027] Figure 5 is a partial structural schematic diagram of another air conditioner indoor unit provided in Embodiment 1;

[0028] Figure 6 is a partial cross-sectional structural schematic diagram of an air-conditioning indoor unit provided in Embodiment 1;

[0029] Figure 7 is a partial cross-sectional structural schematic diagram of another air-conditioning indoor unit provided in Embodiment 1;

[0030] Figure 8 It is a partial structural schematic diagram of an air-conditioning indoor unit provided in Embodiment 2;

[0031] Fig. 9 It is a partial structural diagram of an air conditioner indoor unit provided in Embodiment 3;

[0032] Fig.10 is a partial structural diagram of another air conditioner indoor unit provided in Embodiment 3;

[0033] Fig.11 is a partial cross-sectional structural schematic diagram of an air conditioner indoor unit provided in Embodiment 3;

[0034] Fig.12 is a partial structural diagram of an air-conditioning indoor unit provided in Embodiment 5;

[0035] Fig.13 yes Fig.12 Schematic diagram of the enlarged structure of part B.

[0036] Reference numerals:

[0037] 100, housing; 110, heat exchange air duct; 111, heat exchanger; 112, first air inlet; 113, air outlet of air conditioner; 120, auxiliary air inlet air duct; 121, avoidance groove; 130, volute; 131, first axial side wall; 132, second air duct; 133, third air duct;

[0038] 200, cross-flow fan; 210, auxiliary air inlet; 220, impeller assembly; 230, end cover; 240, connecting plate; 241, center plate; 242, connecting spokes;

[0039] 300, air mixing fan; 310, connecting shaft; 320, fan blades; 330, central axis;

[0040] 400, a first driving motor; 410, a second driving motor; 420, a third driving motor;

[0041] 500, sealing device; 510, fixing member; 511, vent; 512, fixing shaft; 513, fixing plate; 520, sealing member; 521, rotating plate; 5211, annular rack; 522, sealing plate; 5221, arc rack; 530, first gear; 540, second driving assembly; 550, second gear;

[0042] 600, mounting assembly; 610, mounting plate; 611, ventilation opening; 620, mounting protrusion;

[0043] 700, limiting member; 710, limiting hole. DETAILED DESCRIPTION

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] Embodiment 1,

[0051] like Figures 1 to 7 As shown, an embodiment of the present disclosure provides an air conditioner indoor unit, which includes a housing 100, a cross-flow fan 200, and an air mixing fan 300. The cross-flow fan 200 is disposed in the housing 100, and an auxiliary air inlet 210 communicating with the interior of the cross-flow fan 200 is disposed on an axial side wall of the cross-flow fan 200. The air mixing fan 300 is disposed in the housing 100, and an air outlet of the air mixing fan 300 is communicated with the auxiliary air inlet 210. The air mixing fan 300 can drive the indoor air to mix with the heat exchange air inside the cross-flow fan 200 in the interior of the cross-flow fan 200.

[0052] In this embodiment, the cross-flow fan 200 and the air mixing fan 300 are both arranged in the housing 100, and the cross-flow fan 200 can drive the heat exchange air to flow in the housing 100, and the air mixing fan 300 can drive the indoor air that has not been heat exchanged to flow into the housing 100. The axial side wall of the cross-flow fan 200 is provided with an auxiliary air inlet 210 connected to the inside of the cross-flow fan 200, and the air outlet of the air mixing fan 300 is connected to the auxiliary air inlet 210, so that the indoor air that has not been heat exchanged can enter the auxiliary air inlet 210 and flow into the inside of the cross-flow fan 200 under the drive of the air mixing fan 300, and mix with the heat exchange air inside the cross-flow fan 200. In this way, the heat exchange air and the indoor air are mixed, so as to adjust the temperature of the air blown out by the air conditioner indoor unit. And the air conditioner indoor unit includes the cross-flow fan 200 and the air mixing fan 300, so that the air outlet of the air conditioner indoor unit can be increased to transfer the cold or heat of the heat exchange air to more air. This increases or decreases the temperature of the mixed air blown out by the air conditioner indoor unit, reduces the temperature difference between the air blown out by the air conditioner indoor unit and the indoor temperature, and improves user comfort.

[0053] 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.

[0054] Optionally, the shell 100 is constructed with a heat exchange duct 110, and the cross-flow fan 200 is arranged in the heat exchange duct 110. The air conditioner indoor unit also includes a heat exchanger 111, and the heat exchanger 111 is arranged in the heat exchange duct 110. Along the flow direction of air in the heat exchange duct 110, the heat exchanger 111 and the cross-flow fan 200 are arranged in sequence.

[0055] In this embodiment, the heat exchanger 111 and the cross-flow fan 200 are both disposed in the heat exchange air duct 110, and are sequentially disposed along the flow direction of the air in the heat exchange air duct 110. In this way, the air flowing into the cross-flow fan 200 is the heat exchange air that has passed through the heat exchanger 111, so that the heat exchange air that has not passed through the heat exchanger 111 and flows in from the air mixing fan 300 can be mixed with the heat exchange air inside the cross-flow fan 200, thereby adjusting the temperature of the mixed air blown out by the air conditioner indoor unit, reducing the temperature difference between the air blown out by the air conditioner indoor unit and the indoor temperature, and improving the comfort of the user.

[0056] Furthermore, the housing 100 is also configured with a first air inlet 112, a second air inlet and an air conditioning outlet 113. Both ends of the heat exchange air duct 110 are respectively connected to the first air inlet 112 and the air conditioning outlet 113. The air mixing fan 300 is connected to the second air inlet, and the indoor air flowing through the air mixing fan 300 can flow into the housing 100 through the second air inlet, and then flow to the auxiliary air inlet 210.

[0057] Optionally, the first air inlet 112 is disposed at a higher position than the second air inlet. The aperture area of ​​the first air inlet 112 is greater than the aperture area of ​​the second air inlet.

[0058] For example, when the air-conditioning indoor unit is a wall-mounted air-conditioning indoor unit, the first air inlet 112 is disposed on the top of the housing 100 in the air-conditioning room, and the second air inlet is disposed on the side wall of the housing 100 .

[0059] When the air conditioner indoor unit is a vertical air conditioner indoor unit, the first air inlet 112 is disposed at the upper middle portion of the housing 100 of the air conditioner indoor unit, and the second air inlet is disposed at the lower portion of the housing 100 .

[0060] In this way, when the air conditioner indoor unit is in cooling operation mode, the temperature of the lower indoor air around the shell 100 is lower than the temperature of the upper indoor air. In this way, the air conditioner indoor unit can heat more high-temperature air to improve the heat exchange effect of the air conditioner indoor unit.

[0061] Alternatively, if Figure 4 As shown, the housing 100 is further configured with an auxiliary air inlet duct 120 , both ends of which are connected to the second air inlet and the auxiliary air inlet 210 , and the air inlet of the air mixing fan 300 is connected to the auxiliary air inlet duct 120 .

[0062] In some optional embodiments, the number of the mixing fan 300 is one. When the number of the mixing fan 300 is one, an auxiliary air inlet 210 is provided on an axial side wall of the cross-flow fan 200, and along the axial direction of the cross-flow fan 200, the mixing fan 300 is arranged on the side of the cross-flow fan 200 where the auxiliary air inlet 210 is provided.

[0063] In this embodiment, the mixing fan 300 is arranged on one side of the auxiliary air inlet 210 of the cross-flow fan 200, so that the indoor air driven by the mixing fan 300 flows into the cross-flow fan 200 through the auxiliary air inlet 210, mixes with the heat exchange air inside the cross-flow fan 200, and adjusts the temperature of the mixed air blown out by the air-conditioning indoor unit.

[0064] For example, along the axial direction of the cross-flow fan 200 , the cross-flow fan 200 includes a first side wall and a second side wall that are oppositely arranged, the first side wall is provided with an auxiliary air inlet 210 , and the air mixing fan 300 is arranged on a side of the first side wall away from the second side wall.

[0065] Alternatively, if Figure 5 As shown, the cross-flow fan 200 includes an impeller assembly 220 and two end covers 230. The impeller assembly 220 includes one or more impellers. When there are multiple impellers, the interiors of the multiple impellers are connected. The two end covers 230 are respectively connected to the opposite ends of the impeller assembly 220, and one end cover 230 is provided with an auxiliary air inlet 210.

[0066] With this optional embodiment, when there are multiple impellers, the interiors of the multiple impellers are connected, so that the indoor air driven by the mixing fan 300 can flow into the interiors of the multiple impellers to mix with the heat exchange air inside the multiple impellers, thereby improving the mixing effect of the indoor air and the heat exchange air.

[0067] The two end covers 230 are respectively connected to the opposite ends of the impeller assembly 220. When there is only one mixing fan 300, the two end covers 230 include a first end cover and a second end cover. The first end cover is provided with an auxiliary air inlet 210. The side wall of the aforementioned cross-flow fan 200 provided with the auxiliary air inlet 210 is the side wall of the first end cover.

[0068] Furthermore, the air conditioning indoor unit further includes a first driving motor 400, and the cross-flow fan 200 and the air mixing fan 300 are both connected to the first driving motor 400, and the first driving motor 400 drives the cross-flow fan 200 and the air mixing fan 300 to rotate synchronously.

[0069] In this embodiment, the cross-flow fan 200 and the mixing fan 300 are both connected to the first drive motor 400. The first drive motor 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.

[0070] Optionally, the first drive motor 400 includes a first drive end and a second drive end that are relatively arranged. The first drive motor 400 is arranged between the cross-flow fan 200 and the mixing fan 300. The first drive end is connected to the cross-flow fan 200, and the second drive end is connected to the mixing fan 300 to drive the cross-flow fan 200 and the mixing fan 300 to rotate synchronously.

[0071] For example, Figure 5 and Figure 6 As shown, the driving end of the first driving motor 400 is connected to the cross-flow fan 200 , and the air 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 air mixing fan 300 to rotate via the connecting shaft 310 .

[0072] In this optional embodiment, the driving end of the first driving motor 400 is connected to the cross-flow fan 200, and the first driving motor 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 motor 400 through the cross-flow fan 200.

[0073] Optionally, the driving end of the first driving motor 400 is connected to the second end cover.

[0074] Optionally, 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.

[0075] In some optional embodiments, such as Figures 5 to 7 As shown, 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 plate 240. The connecting shaft 310 is connected to the connecting position.

[0076] 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.

[0077] 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.

[0078] 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 when the cross-flow fan 200 drives the air mixing fan 300 to rotate synchronously, 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.

[0079] 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.

[0080] 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.

[0081] Optionally, the air mixing fan 300 includes an axial flow fan or a centrifugal fan.

[0082] 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, so as to guide the indoor air flowing out of the centrifugal fan to the auxiliary air inlet 210.

[0083] In some optional embodiments, such as Figure 3 and Figure 7 As shown, the air conditioner indoor unit further includes a sealing device 500, which is disposed 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, and when the sealing device 500 seals the auxiliary air inlet duct 120, the auxiliary air inlet duct 120 is disconnected from the heat exchange duct 110.

[0084] In this embodiment, the sealing device 500 is disposed in the auxiliary air inlet duct 120, and the sealing device 500 can 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. The indoor air that has not been heat exchanged can enter the heat exchange duct 110 through the auxiliary air inlet duct 120 to mix with the heat exchange air in the heat exchange duct 110, thereby adjusting the temperature of the air blown out by the indoor unit of the air conditioner, reducing the temperature difference between the air blown out by the indoor unit of the air conditioner and the indoor temperature, and improving the comfort of the user.

[0085] When the sealing device 500 seals the auxiliary air inlet duct 120, the indoor air cannot enter the heat exchange duct 110 through the auxiliary air inlet duct 120, and the indoor air is not mixed with the heat exchange air, so that the air blown out by the air conditioner indoor unit is normal heat exchange air, thereby meeting the different air outlet requirements of users.

[0086] For example, when the temperature difference between the heat exchanged air and the room temperature is less than the preset temperature difference, the sealing device 500 can seal the auxiliary air inlet duct 120 to reduce the influence of the unheated indoor air on the air outlet of the air conditioner indoor unit.

[0087] Exemplarily, the housing 100 includes an air duct shell and a volute 130, and 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 the first air duct and the second air duct 132, and the heat exchange air duct 110 includes the 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.

[0088] 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 provided with the auxiliary air inlet 210 , and the first axial side wall 131 is configured with a second air duct 132 .

[0089] In some optional embodiments, the sealing device 500 includes a fixing member 510 and a sealing member 520, wherein the fixing member 510 is connected to the inner side wall of the auxiliary air inlet duct 120, and the fixing member 510 is provided with a vent 511. The sealing member 520 is connected to the fixing member 510, and the sealing member 520 can move relative to the vent 511 to open or seal the vent 511.

[0090] With this optional embodiment, the fixing member 510 is connected to the inner wall of the auxiliary air inlet duct 120, and the sealing member 520 is connected to the fixing member 510, so that the sealing device 500 is arranged in the auxiliary air inlet duct 120. The sealing member 520 can move relative to the vent 511 to open or seal the vent 511. In this way, when the sealing member 520 opens the vent 511, the indoor air without heat exchange 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 member 520 seals the vent 511, the sealing member 520 blocks the flow of indoor air, that is, the sealing device 500 seals the auxiliary air inlet duct 120.

[0091] Furthermore, the fixing member 510 includes a fixing shaft 512 and a 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 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 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.

[0092] The sealing member 520 includes a rotating plate 521 and a 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 sealing plate 522 is connected to the rotating plate 521. The number of the sealing plates 522 is the same as the number of the vents 511 and corresponds one to one. The sealing plates 522 can rotate relative to the vents 511 to open or seal the vents 511.

[0093] In this embodiment, the rotating plate 521 is rotatably connected to the fixed shaft 512 , one end of the sealing plate 522 is connected to the rotating plate 521 , and the sealing plate 522 can rotate synchronously with the rotating plate 521 relative to the vent 511 to open or seal the vent 511 .

[0094] In some optional embodiments, an annular rack 5211 is provided at the end of the rotating plate 521, and the sealing device 500 also includes a first drive assembly and a first gear 530, the first drive assembly is connected to the fixed shaft 512, the first gear 530 is connected to the driving end of the first drive assembly, and the first gear 530 is meshed with the annular rack 5211.

[0095] 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. 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 sealing plate 522 is connected to the rotating plate 521, and the rotating plate 521 rotates to drive the sealing plate 522 to rotate relative to the vent 511, thereby opening or closing the vent 511.

[0096] When the sealing plate 522 opens the vent 511, the sealing plate 522 overlaps with the fixing plate 513 to expose the vent 511, so that the vent 511 can be ventilated. When the sealing plate 522 seals the vent 511, the sealing plate 522 covers the top of the vent 511 to block the vent 511 and seal the vent 511.

[0097] Optionally, the width of the sealing plate 522 is greater than or equal to the width of the vent 511 at the corresponding position. In this way, when the 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.

[0098] In some optional embodiments, the fixed plate 513 includes one or more sub-fixed plates, both ends of which are respectively connected to the side walls of the fixed shaft 512 and the inner walls of the auxiliary air inlet duct 120. When there are multiple sub-fixed plates, the multiple sub-fixed plates are arranged at circumferential intervals along the fixed shaft 512, and two adjacent sub-fixed plates, the fixed shaft 512 and the auxiliary air inlet duct 120 enclose the ventilation opening 511.

[0099] In this embodiment, the two ends of the sub-fixed plate 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 are arranged at intervals along the circumference of the fixed shaft 512, so that two adjacent sub-fixed plates, 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.

[0100] Further, the width of the sealing plate 522 is smaller than or equal to the width of the sub-fixing plate at the corresponding position, and the width of the vent 511 is smaller than or equal to the width of the sub-fixing plate at the corresponding position.

[0101] When the vent 511 is opened, the sealing plate 522 is overlapped with the sub-fixed plate at the corresponding position, and the width of the sealing plate 522 is less than or equal to the width of the sub-fixed plate at the corresponding position, thereby reducing the situation where the sealing plate 522 still partially blocks the vent 511 when the vent 511 is opened.

[0102] Embodiment 2 is different from Embodiment 1 in that:

[0103] In some optional embodiments, such as Figure 2 As shown, the driving end of the first driving motor 400 is connected to the cross-flow fan 200 , the mixing fan 300 is disposed in the auxiliary air inlet 210 , and the mixing fan 300 includes blades 320 , and the ends of the blades 320 are connected to the inner wall of the auxiliary air inlet 210 .

[0104] 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.

[0105] 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.

[0106] 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.

[0107] In some optional embodiments, along the axial direction of the cross-flow fan 200 , an extension length of the first end cover is greater than or equal to a length of the air mixing fan 300 .

[0108] In this embodiment, the first end cover is provided with an auxiliary air inlet 210, and the air mixing fan 300 is provided in the auxiliary air inlet 210. The extension length of the first end cover is greater than or equal to the length of the air mixing fan 300, that is, the extension length of the side wall of the auxiliary air inlet 210 is greater than or equal to the length of the air mixing fan 300. In this way, the air mixing fan 300 can be completely located in the auxiliary air inlet 210, reducing the occurrence of indoor air escaping from the auxiliary air inlet 210 driven by the air mixing fan 300, and increasing the mixed air volume.

[0109] Exemplarily, along the axial direction of cross-flow fan 200 , an extension length of the second end cover is smaller than an extension length of the first end cover.

[0110] In this embodiment, the second end cover is connected to the driving end of the first driving motor 400, and the extension length of the second end cover is smaller than the extension length of the first end cover. This can reduce the space occupied by the second end cover and improve the compactness of the internal components of the air-conditioning indoor unit, thereby reducing the volume and production cost of the air-conditioning indoor unit.

[0111] 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 220 is smaller than the straight-line distance between the second end of the blade 320 and the impeller assembly 220.

[0112] 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 220 is smaller than the straight-line distance between the second end of the blade 320 and the impeller assembly 220, 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.

[0113] Embodiment 3 is different from Embodiment 1 and Embodiment 2 in that:

[0114] In some optional embodiments, such as Figures 9 to 11 As shown, the air conditioner indoor unit further includes a second drive motor 410 and a third drive motor 420. The second drive motor 410 is connected to the cross flow fan 200 to drive the cross flow fan 200 to rotate; the third drive motor 420 is connected to the air mixing fan 300 to drive the air mixing fan 300 to rotate.

[0115] With this optional embodiment, the second drive motor 410 can rotate synchronously with the third drive motor 420, so that the rotation speed of the cross-flow fan 200 is the same as the rotation speed of the air mixing fan 300. The second drive motor 410 can also rotate asynchronously with the third drive motor 420, 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 second drive motor 410 can also rotate, and the third drive motor 420 can not rotate, so that the indoor air that has not been heat exchanged can not flow into the inside of the cross-flow fan 200, and no air mixing is performed, so that the air conditioner indoor unit can discharge air normally. In this way, the air conditioner indoor unit can have a variety of air outlet modes to meet the user's various air outlet requirements and improve the user's experience.

[0116] Furthermore, a driving end of the second driving motor 410 is connected to the second end cover.

[0117] In some optional implementations, the air conditioner indoor unit further includes a volute 130, the cross-flow fan 200 is disposed in the volute 130, the first axial sidewall 131 of the volute 130 is disposed opposite to the auxiliary air inlet 210, the first axial sidewall 131 is provided with a mounting assembly 600, and the third drive motor 420 is connected to the mounting assembly 600. The second drive motor 410 is disposed on the second axial sidewall of the volute 130.

[0118] With this optional embodiment, the crossflow fan 200 is arranged in the volute 130, so that a vortex can be formed inside the crossflow fan 200 when the crossflow fan 200 rotates, thereby driving the heat exchange air to flow. The air mixing fan 300 is arranged on the side of the crossflow fan 200 where the auxiliary air inlet 210 is provided, and the first axial side wall 131 of the volute 130 is arranged opposite to the auxiliary air inlet 210, that is, the first axial side wall 131 and the air mixing fan 300 are arranged on the same side of the crossflow fan 200. The first axial side wall 131 is provided with a mounting assembly 600, and the third drive motor 420 is connected to the mounting assembly 600, so as to set the third drive motor 420 on the first axial side wall 131, thereby fixing the air mixing fan 300.

[0119] Furthermore, if Fig.10 and Fig.11 As shown, the first axial side wall 131 is provided with a second air duct 132, and the air mixing fan 300 drives the indoor air to enter the auxiliary air inlet 210 through the air mixing air duct. The mounting assembly 600 includes a mounting plate 610 and a mounting protrusion 620. The mounting plate 610 is connected to the inner side wall of the second air duct 132, and the mounting plate 610 is provided with a ventilation opening 611, and the ventilation opening 611 is connected to the second air duct 132. The mounting protrusion 620 is connected to the mounting plate 610, and the third drive motor 420 is arranged on the mounting protrusion 620.

[0120] With this optional embodiment, the indoor wind enters the auxiliary air inlet 210 through the second air duct 132, so that the indoor wind can pass through the volute 130 and flow into the interior of the cross-flow fan 200 along the axial direction of the cross-flow fan 200. The mounting plate 610 is connected to the inner side wall of the second air duct 132, and the inner side wall of the second air duct 132 can fix the mounting plate 610. The mounting protrusion 620 is connected to the mounting plate 610, and the third drive motor 420 is disposed on the mounting protrusion 620 to fix the third drive motor 420.

[0121] The mounting plate 610 is disposed in the second air duct 132. The mounting plate 610 is provided with a ventilation opening 611. The ventilation opening 611 is connected to the second air duct 132, so that the indoor wind flowing into the second air duct 132 can flow to the auxiliary air inlet 210 through the ventilation opening 611, so that the second air duct 132 can not only fix the mounting plate 610, but also ventilate.

[0122] The second air duct 132 can be coaxially arranged with the auxiliary air inlet 210, and the mounting plate 610 and the mounting protrusion 620 are arranged in the second air duct 132, so that the driving end of the third driving motor 420 can be coaxially arranged with the cross-flow fan 200, thereby making the mixing fan 300 coaxially arranged with the cross-flow fan 200.

[0123] Furthermore, the third drive motor 420 is arranged on one side of the mounting plate 610, and the mixing fan 300 is arranged on the other side of the mounting plate 610. The mounting plate 610 is provided with a through hole, and the driving end of the third drive motor 420 is connected to the connecting shaft 310 through the through hole, or the connecting shaft 310 is connected to the third drive motor 420 through the through hole.

[0124] Using this optional embodiment, the third drive motor 420 and the mixing air fan 300 are respectively arranged on both sides of the mounting plate 610, and the driving end of the third drive motor 420 is connected to the connecting shaft 310 through the through hole of the mounting plate 610. The driving end of the third drive motor 420 is rotatably connected to the through hole. The through hole can radially limit the driving end of the third drive motor 420, thereby reducing the radial shaking of the driving end of the third drive motor 420 and the mixing air fan 300 during rotation, thereby improving the working stability and reliability of the air-conditioning indoor unit.

[0125] When the connecting shaft 310 passes through the through hole and is connected to the third drive motor 420, the connecting shaft 310 is rotatably connected to the through hole, and the through hole can radially limit the connecting shaft 310, thereby reducing the radial shaking of the mixing fan 300 during rotation and improving the working stability and reliability of the air conditioning indoor unit.

[0126] Optionally, the mounting protrusion 620 is connected to a side wall of the mounting plate 610 facing away from the auxiliary air inlet 210 .

[0127] In this embodiment, the mounting protrusion 620 is connected to the side wall of the mounting plate 610 away from the auxiliary air inlet 210, the third drive motor 420 is connected to the mounting protrusion 620, and the third drive motor 420 and the air mixing fan 300 are respectively arranged on two opposite sides of the mounting plate 610. In other words, the air mixing fan 300 is arranged on the side of the mounting plate 610 facing the auxiliary air inlet 210.

[0128] Driven by the mixing fan 300, the indoor air can first pass through the third drive motor 420 to enter the mixing air duct, then flow through the mixing fan 300 through the mixing air duct, and driven by the mixing fan 300 to flow into the cross-flow fan 200 through the auxiliary air inlet 210, so as to be mixed with the heat exchange air inside the cross-flow fan 200, and then flow out of the cross-flow fan 200 and the air-conditioning indoor unit together.

[0129] For example, Fig. 9 and Fig.11As shown, the air conditioner indoor unit further includes a limiting member 700 , which is connected to the inner wall of the auxiliary air inlet 210 , and the limiting member 700 is provided with a limiting hole 710 , and the connecting shaft 310 is rotatably connected to the limiting hole 710 .

[0130] In this embodiment, the stopper 700 is connected to the inner side wall of the auxiliary air inlet 210, and the connecting shaft 310 is rotatably connected to the stopper hole 710 of the stopper 700. The stopper hole 710 can also radially stop the connecting shaft 310, reduce the radial shaking of the air mixing fan 300 during the rotation process, and improve the working stability and reliability of the air conditioner indoor unit.

[0131] Optionally, a bearing is provided in the limiting hole 710, the limiting hole 710 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 710 and reduce the rotational friction force of the limiting hole 710 on the connecting shaft 310.

[0132] When the mixing fan 300 includes blades 320 and a central shaft 330, the connecting shaft 310 is coaxially connected to the central shaft 330, the axial side wall of the central shaft 330 is connected to the blades 320, one end of the connecting shaft 310 is connected to the driving end of the third driving motor 420, and the other end of the connecting shaft 310 passes through the limiting hole 710 and is connected to the central shaft 330, or the other end of the connecting shaft 310 passes through the central shaft 330 and is located in the limiting hole 710.

[0133] In this embodiment, the stopper 700 is disposed in the auxiliary air inlet 210. When the other end of the connecting shaft 310 passes through the stopper hole 710 and is connected to the central shaft 330, that is, the central shaft 330 is located in the auxiliary air inlet 210, the air mixing fan 300 is disposed in the auxiliary air inlet 210. Further, the inner side wall of the auxiliary air inlet 210 extends in a direction away from the impeller assembly 220, that is, the end cover 230 provided with the auxiliary air inlet 210 extends in a direction away from the impeller assembly 220, so as to increase the extension length of the auxiliary air inlet 210, so that the air mixing fan 300 can be disposed in the auxiliary air inlet 210.

[0134] Optionally, the end of the auxiliary air inlet 210 is flush with the end of the second air duct 132 facing the throughflow, or the end of the auxiliary air inlet 210 extends into the second air duct 132 .

[0135] When the other end of the connecting shaft 310 passes through the central shaft 330 and is located in the limiting hole 710 , that is, the connecting shaft 310 is located on both sides of the central shaft 330 , the air mixing fan 300 is disposed between the second air duct 132 and the auxiliary air inlet 210 .

[0136] Embodiment 4 is different from Embodiments 1 to 3 in that:

[0137] In some optional embodiments, there are two air mixing fans 300. When there are two air mixing fans 300, two opposite axial side walls of the cross flow fan 200 are provided with auxiliary air inlets 210. Along the axial direction of the cross flow fan 200, the two air mixing fans 300 are respectively provided on the opposite side walls of the cross flow fan 200.

[0138] In this embodiment, the two opposite axial side walls of the cross-flow fan 200 are both provided with auxiliary air inlets 210, and the two air mixing fans 300 are respectively provided on the two opposite side walls of the cross-flow fan 200. One air mixing fan 300 corresponds to the auxiliary air inlet 210 on one side of the cross-flow fan 200, and the indoor air driven by the two air mixing fans 300 can enter the inside of the cross-flow fan 200 through the corresponding auxiliary air inlets 210. In this way, the indoor air entering the inside of the cross-flow fan 200 can be increased, and the situation where the air volume of the indoor air mixed with the heat exchange air at the other axial side wall of the cross-flow fan 200 is small when only one axial side wall of the cross-flow fan 200 is provided with the auxiliary air inlet 210 can be reduced, thereby improving the uniformity of the air mixing of the air conditioner indoor unit.

[0139] Furthermore, the air mixing fan 300 includes an axial flow fan, and when there are two axial flow fans, the two axial flow fans face in opposite directions. In this way, the indoor air driven by the two axial flow fans flows relatively to flow into the interior of the cross flow fan 200 from the auxiliary air inlets 210 at both ends of the cross flow fan 200.

[0140] Embodiment 5 is different from Embodiments 1 to 4 in that:

[0141] In some optional embodiments, such as Fig.12 and Fig.13 As shown, when the auxiliary air inlet duct 120 is provided with a sealing device 500, a side wall of the auxiliary air inlet duct 120 is provided with an avoidance groove 121, the other end of a sealing plate 522 extends into the avoidance groove 121, and the other end of the sealing plate 522 is provided with an arc-shaped rack 5221. The sealing device 500 further 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.

[0142] 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 sealing plate 522 is connected to the rotating plate 521, the other end of the sealing plate 522 extends into the avoidance groove 121, and the other end of the 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 sealing plate 522 provided with the arc-shaped rack 5221 rotates. Multiple sealing plates 522 are all connected to the rotating plate 521, and the rotation of the sealing plate 522 provided with the arc-shaped rack 5221 drives the rotating plate 521 to rotate, and the rotation of the rotating plate 521 drives the multiple sealing plates 522 to rotate synchronously, so as to realize the opening or sealing of the vent 511.

[0143] Furthermore, along the flow direction of the gas in the auxiliary air inlet duct 120 , the sealing plate 522 and the fixing plate 513 are sequentially arranged.

[0144] 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 sealing plate 522 extends into the avoidance groove 121, and the sealing plate 522 and the fixing plate 513 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 513 and the cross-flow fan 200 are arranged in sequence. In this way, when the 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.

[0145] An embodiment of the present disclosure provides an air conditioner, comprising any of the air conditioner indoor units described above.

[0146] The air conditioner provided in the embodiment of the present disclosure includes the air conditioner indoor unit described in any one of the above embodiments, and thus has all the beneficial effects of the air conditioner indoor unit described in any one of the above embodiments, which will not be described in detail here.

[0147] 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: case; A cross-flow fan is disposed in the housing, and an axial side wall of the cross-flow fan is provided with an auxiliary air inlet communicated with the interior of the cross-flow fan; The air mixing fan is arranged in the shell, and the air outlet of the air mixing fan is connected with the auxiliary air inlet. The air mixing fan can drive the indoor air to mix with the heat exchange air inside the cross flow fan inside the cross flow fan.

2. The air conditioner indoor unit according to claim 1, characterized in that: The number of air mixing fans is one or two; When the number of the air mixing fan is one, an auxiliary air inlet is provided on an axial side wall of the cross-flow fan, and along the axial direction of the cross-flow fan, the air mixing fan is provided on a side of the cross-flow fan provided with the auxiliary air inlet; When there are two air mixing fans, two opposite axial side walls of the cross flow fan are provided with auxiliary air inlets, and along the axial direction of the cross flow fan, the two air mixing fans are respectively arranged on two opposite side walls of the cross flow fan.

3. The air conditioner indoor unit according to claim 1, characterized in that: Also includes: The first driving motor, the cross-flow fan and the air mixing fan are all connected to the first driving motor, and the first driving motor drives the cross-flow fan and the air mixing fan to rotate synchronously.

4. The air conditioner indoor unit according to claim 3, characterized in that: The first driving motor is connected to the cross-flow fan. The air mixing fan includes a connecting shaft. The connecting shaft is connected to the axial side wall of the cross-flow fan. The cross-flow fan drives the air mixing fan to rotate through the connecting shaft.

5. The air conditioner indoor unit according to claim 3, characterized in that: The first driving motor is connected to the cross-flow fan. The air mixing fan is arranged in the auxiliary air inlet. The air mixing fan includes blades. The ends of the blades are connected to the inner side walls of the auxiliary air inlet.

6. The air conditioner indoor unit according to claim 1, characterized in that: Also includes: A second driving motor is connected to the cross-flow fan to drive the cross-flow fan to rotate; The third driving motor is connected to the air mixing fan to drive the air mixing fan to rotate.

7. The air conditioner indoor unit according to claim 1, characterized in that: The air mixing fan includes an axial flow fan or a centrifugal fan.

8. The air conditioner indoor unit according to any one of claims 1 to 7, characterized in that: The shell is structured with a heat exchange duct, and the cross-flow fan is arranged in the heat exchange duct. The air conditioner indoor unit also includes a heat exchanger, which is arranged in the heat exchange duct. The heat exchanger and the cross-flow fan are arranged in sequence along the flow direction of air in the heat exchange duct.

9. The air conditioner indoor unit according to any one of claims 1 to 7, characterized in that: Crossflow fans include: An impeller assembly includes one or more impellers. When there are multiple impellers, the interiors of the multiple impellers are connected; The two end covers are respectively connected to the two opposite ends of the impeller assembly, and one or both end covers are provided with auxiliary air inlets.

10. An air conditioner, characterized in that: include: An air conditioning indoor unit as claimed in any one of claims 1 to 9.

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