Air conditioner indoor unit and air conditioner

Abstract

The application relates to the air conditioning technical field, and discloses an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a shell, a cross-flow fan arranged in the shell, an auxiliary air inlet arranged on the axial side wall of the cross-flow fan and communicated with the inside of the cross-flow fan, and a mixed air fan arranged in the shell and communicated with the auxiliary air inlet. The mixed air fan can drive indoor air to mix with heat exchange air in the inside of the cross-flow fan. In the embodiment, the indoor air blows into the inside of the cross-flow fan along the axial direction of the cross-flow fan, the heat exchange air passes through the cross-flow fan along the radial direction of the cross-flow fan, and the flow directions of the heat exchange air and the indoor air are different, so that the mixing effect of the indoor air and the heat exchange air can be improved during mixing. Therefore, the uniformity of the temperature 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 conditioners, for example to an air conditioner indoor unit and an air conditioner. BACKGROUND

[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 appliances in people's daily life. Various air conditioners can lower or raise the ambient temperature when the ambient temperature is too high or too low, so that people can be in a more comfortable environment. However, in the process of using the air conditioner, the wind blown out by the air conditioner is obtained by heat exchange through the heat exchanger, especially in the cooling mode, the temperature of the heat-exchanged wind is low. When the heat-exchanged cold wind or hot wind is directly blown to the user, the user's body will feel uncomfortable, affecting the user's experience.

[0003] In the related art, an air conditioner indoor unit is disclosed, 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. The shell is mounted on the base and is provided with an indoor air suction port, a heat exchange air inlet and an indoor air outlet corresponding to the position of the heat exchange air outlet. The heat exchanger and the heat exchange fan are both mounted on the base and located in the shell. The indoor air module is mounted 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, and the indoor air outlet is located above the heat exchange air outlet and adjacent to the heat exchange air outlet. The indoor air flowing out of the indoor air outlet and the heat exchange air flowing out of the heat exchange air outlet are mixed and flow out of the indoor air outlet.

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

[0005] In the related art, the indoor air outlet and the heat exchange air outlet are arranged adjacent to each other, and the indoor air outlet is located above the heat exchange air outlet. Since the directions of the indoor air outlet and the heat exchange air outlet are the same, the indoor air and the heat exchange air cannot be mixed well after flowing out, which can easily cause the temperature of the blown air to be uneven, reducing the user's experience.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The air conditioner indoor unit and the air conditioner provided by the embodiments of the present disclosure can mix indoor air that has not been heat-exchanged by a heat exchanger and heat-exchanged air, improve the mixing effect of the indoor air and the heat-exchanged air, solve the problem of uneven air outlet temperature of the air conditioner indoor unit, and improve the user experience.

[0009] According to a first embodiment provided in the present application, an air conditioner indoor unit is provided, comprising: a shell; a cross-flow fan arranged in the shell, an axial side wall of the cross-flow fan being provided with an auxiliary air inlet communicating with the inside of the cross-flow fan; and a mixing fan arranged in the shell, an air outlet of the mixing fan communicating with the auxiliary air inlet, the mixing fan being capable of driving indoor air to mix with heat-exchanged air in the inside of the cross-flow fan.

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

[0011] In some optional embodiments, the air conditioner indoor unit further comprises: a first driving motor, the cross-flow fan and the mixing fan being connected with the first driving motor, the first driving motor driving the cross-flow fan and the mixing fan to rotate synchronously.

[0012] In some optional embodiments, the first driving motor is connected with the cross-flow fan, the mixing fan comprises a connecting shaft, the connecting shaft being connected with the axial side wall of the cross-flow fan, and the cross-flow fan drives the mixing fan to rotate through the connecting shaft.

[0013] In some optional embodiments, the first driving motor is connected with the cross-flow fan, the mixing fan is arranged in the auxiliary air inlet, and the mixing fan comprises fan blades, the ends of the fan blades being connected with the inner side wall of the auxiliary air inlet.

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

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

[0016] In some optional embodiments, the shell is configured with a heat-exchanged air duct, the cross-flow fan is arranged in the heat-exchanged air duct, the air conditioner indoor unit further comprises a heat exchanger arranged in the heat-exchanged air duct, and the heat exchanger and the cross-flow fan are arranged in sequence along the flow direction of air in the heat-exchanged air duct.

[0017] In some optional embodiments, the cross-flow fan comprises: a impeller assembly comprising one or more impellers, and the plurality of impellers are in communication with each other when the number of impellers is more than one; and two end covers respectively connected to two opposite ends of the impeller assembly, and one or both of the end covers is provided with an auxiliary air inlet.

[0018] According to a second embodiment provided in the present application, an air conditioner is provided, comprising the air conditioner indoor unit of any one of the preceding embodiments.

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

[0020] In the present embodiment, the cross-flow fan and the mixing fan are both arranged in the shell, the cross-flow fan can drive the heat exchange wind to flow in the shell, and the mixing fan can drive the indoor wind that has not been heat exchanged to flow into the shell. The axial side wall of the cross-flow fan is provided with an auxiliary air inlet in communication with the inside of the cross-flow fan, and the air outlet of the mixing fan is in communication with the auxiliary air inlet. In this way, the indoor wind that has not been heat exchanged can be driven by the mixing fan to enter the auxiliary air inlet and flow into the inside of the cross-flow fan, and mix with the heat exchange wind in the inside of the cross-flow fan. In this way, the heat exchange wind and the indoor wind are mixed, so as to adjust the temperature of the wind blown out by the air conditioner indoor unit. Moreover, the air conditioner indoor unit comprises the cross-flow fan and the mixing fan, so as to increase the air volume of the air conditioner indoor unit, so as to transfer the cold or heat of the heat exchange wind to more air. Thus, the temperature of the mixed wind blown out by the air conditioner indoor unit is increased or decreased, the temperature difference between the wind blown out by the air conditioner indoor unit and the indoor temperature is reduced, and the comfort of the user is improved. The auxiliary air inlet is arranged on the axial side wall of the cross-flow fan, and the indoor wind driven by the mixing fan blows into the inside of the cross-flow fan along the axial direction of the cross-flow fan through the auxiliary air inlet. The heat exchange wind passes through the cross-flow fan along the radial direction of the cross-flow fan, and the flow directions of the heat exchange wind and the indoor wind are different, so as to improve the mixing effect in the process of mixing the indoor wind and the heat exchange wind. Thus, the uniformity of the temperature of the mixed wind blown out by the air conditioner indoor unit is improved, and the user experience is improved.

[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, and elements with the same reference numerals in the drawings are regarded as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of one view angle of an air conditioner indoor unit provided by embodiment one;

[0024] Figure 2 is a structural schematic diagram of another view angle of an air conditioner indoor unit provided by embodiment one;

[0025] Figure 3 is Figure 2 a sectional structure schematic view of A-A direction in figure

[0026] Figure 4 is a partial structure schematic view of an air conditioner indoor unit provided by embodiment one;

[0027] Figure 5 is another partial structure schematic view of an air conditioner indoor unit provided by embodiment one;

[0028] Figure 6 is a partial sectional structure schematic view of an air conditioner indoor unit provided by embodiment one;

[0029] Figure 7 is another partial sectional structure schematic view of an air conditioner indoor unit provided by embodiment one;

[0030] Figure 8 is a partial structure schematic view of an air conditioner indoor unit provided by embodiment two;

[0031] Figure 9 is a partial structure schematic view of an air conditioner indoor unit provided by embodiment three;

[0032] Figure 10 is another partial structure schematic view of an air conditioner indoor unit provided by embodiment three;

[0033] Figure 11 is a partial sectional structure schematic view of an air conditioner indoor unit provided by embodiment three;

[0034] Figure 12 is a partial structure schematic view of an air conditioner indoor unit provided by embodiment five;

[0035] Figure 13 is Figure 12 an enlarged structure schematic view of B part in figure

[0036] Reference signs:

[0037] 100, shell; 110, heat exchange air duct; 111, heat exchanger; 112, first air inlet; 113, air conditioner air outlet; 120, auxiliary air inlet air duct; 121, avoiding 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 spoke;

[0039] 300, mixed fan; 310, connecting shaft; 320, fan blade; 330, central shaft;

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

[0041] 500, sealing device; 510, fixing member; 511, ventilation opening; 512, fixing shaft; 513, fixing plate; 520, sealing member; 521, rotating plate; 5211, annular rack; 522, sealing plate; 5221, arc-shaped 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 enable a person skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0045] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0046] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0047] In addition, the terms "set", "connected", and "fixed" should be interpreted broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements, or components. Those of ordinary skill in the art can understand the specific meaning of the above terms in the embodiments of the present disclosure according to the specific circumstances.

[0048] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means that there are three relationships of A or B, or A and B.

[0049] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0050] Embodiment one,

[0051] As Figures 1 to 7 shown, the present disclosure provides an air conditioner indoor unit, which comprises a shell 100, a cross-flow fan 200 and a mixed air fan 300. The cross-flow fan 200 is arranged in the shell 100, and the axial side wall of the cross-flow fan 200 is provided with an auxiliary air inlet 210 which is in communication with the inside of the cross-flow fan 200. The mixed air fan 300 is arranged in the shell 100, and the air outlet of the mixed air fan 300 is in communication with the auxiliary air inlet 210. The mixed air fan 300 can drive the indoor air to mix with the heat exchange air in the inside of the cross-flow fan 200.

[0052] In the present embodiment, the cross-flow fan 200 and the mixed air fan 300 are arranged in the shell 100. The cross-flow fan 200 can drive the heat exchange air to flow in the shell 100, and the mixed air fan 300 can drive the indoor air which has not been heat exchanged to flow into the shell 100. The axial side wall of the cross-flow fan 200 is provided with an auxiliary air inlet 210 which is in communication with the inside of the cross-flow fan 200. The air outlet of the mixed air fan 300 is in communication with the auxiliary air inlet 210. In this way, the indoor air which has not been heat exchanged can enter the auxiliary air inlet 210 under the driving of the mixed air fan 300, and flow into the inside of the cross-flow fan 200 to mix with the heat exchange air in the inside of the cross-flow fan 200. In this way, the heat exchange air and the indoor air are mixed to adjust the temperature of the air blown out by the air conditioner indoor unit. Moreover, the air conditioner indoor unit comprises the cross-flow fan 200 and the mixed air fan 300, so that the air volume of the air conditioner indoor unit can be increased to transfer the cold or heat of the heat exchange air to more air. Thus, the temperature of the mixed air blown out by the air conditioner indoor unit is increased or decreased, the temperature difference between the air blown out by the air conditioner indoor unit and the indoor temperature is reduced, and the comfort of the user is improved.

[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 enters 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 directions of the indoor air and the heat exchange air are different, so that the mixing effect of the indoor air and the heat exchange air can be improved during the mixing process. Therefore, the uniformity of the temperature of the mixed air blown out by the air conditioner indoor unit is improved, and the user experience is improved.

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

[0055] In this embodiment, the heat exchanger 111 and the cross-flow fan 200 are arranged in the heat exchange air duct 110, and the heat exchanger 111 and the cross-flow fan 200 are arranged in sequence 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 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 is flowed in by 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] Further, the shell 100 is further configured with a first air inlet 112, a second air inlet, and an air conditioner air outlet 113. The two ends of the heat exchange air duct 110 are in communication with the first air inlet 112 and the air conditioner air outlet 113, respectively. The air mixing fan 300 is in communication with the second air inlet, and the indoor air flowing through the air mixing fan 300 can flow into the shell 100 through the second air inlet, thereby flowing to the auxiliary air inlet 210.

[0057] Optionally, the first air inlet 112 is arranged higher than the arrangement position of the second air inlet. The caliber area of the first air inlet 112 is larger than the caliber area of the second air inlet.

[0058] For example, in the case of a hanging air conditioner indoor unit, the first air inlet 112 is arranged at the top of the shell 100 of the air conditioner indoor unit, and the second air inlet is arranged on the side wall of the shell 100.

[0059] In the case of a standing air conditioner indoor unit, the first air inlet 112 is arranged at the upper middle part of the shell 100 of the air conditioner indoor unit, and the second air inlet is arranged at the lower part of the shell 100.

[0060] In this way, when the air conditioner indoor unit is in the cooling mode, the temperature of the indoor lower air around the shell 100 is lower than the temperature of the indoor upper air, so that the air conditioner indoor unit can exchange heat with more air with high temperature, thereby improving the heat exchange effect of the air conditioner indoor unit.

[0061] Optionally, as shown in Figure 4 The shell 100 is also configured with an auxiliary air inlet air duct 120, the two ends of the auxiliary air inlet air duct 120 are in communication with the second air inlet and the auxiliary air inlet 210, and the air inlet of the mixed air fan 300 is in communication with the auxiliary air inlet air duct 120.

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

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

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

[0065] Optionally, as shown in Figure 5 The cross-flow fan 200 includes a impeller assembly 220 and two end covers 230. The impeller assembly 220 includes one or more impellers, and in the case where the number of impellers is more than one, the interiors of the plurality of impellers are in communication. The two end covers 230 are respectively connected to the two opposite ends of the impeller assembly 220, and one end cover 230 is provided with the auxiliary air inlet 210.

[0066] In this optional embodiment, in the case where the number of impellers is more than one, the interiors of the plurality of impellers are in communication, so that the indoor air driven by the mixed air fan 300 can flow into the interiors of the plurality of impellers to mix with the heat exchange air in the interiors of the plurality of 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 two opposite ends of the impeller assembly 220, and in the case where the number of mixed air fans 300 is one, the two end covers 230 include a first end cover and a second end cover, the first end cover is provided with the auxiliary air inlet 210, and 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] Further, the air conditioner indoor unit further comprises a first driving motor 400, the cross flow fan 200 and the mixed air fan 300 are connected with the first driving motor 400, and the first driving motor 400 drives the cross flow fan 200 and the mixed air fan 300 to rotate synchronously.

[0069] In the embodiment, the cross flow fan 200 and the mixed air fan 300 are connected with the first driving motor 400, and the first driving motor 400 can drive the cross flow fan 200 and the mixed air fan 300 to rotate synchronously, so as to realize air mixing in the process that the cross flow fan 200 drives the heat exchange air to flow, and adjust the temperature of the air outlet of the air conditioner indoor unit.

[0070] Optionally, the first driving motor 400 comprises a first driving end and a second driving end arranged oppositely, the first driving motor 400 is arranged between the cross flow fan 200 and the mixed air fan 300, the first driving end is connected with the cross flow fan 200, and the second driving end is connected with the mixed air fan 300, so as to drive the cross flow fan 200 and the mixed air fan 300 to rotate synchronously.

[0071] For example, as shown in Figure 5 and Figure 6 , the driving end of the first driving motor 400 is connected with the cross flow fan 200, the mixed air fan 300 comprises a connecting shaft 310, the connecting shaft 310 is connected with the axial side wall of the cross flow fan 200, and the cross flow fan 200 drives the mixed air fan 300 to rotate through the connecting shaft 310.

[0072] In the optional embodiment, the driving end of the first driving motor 400 is connected with the cross flow fan 200, and the first driving motor 400 drives the cross flow fan 200 to rotate. The mixed air fan 300 comprises a connecting shaft 310, the connecting shaft 310 is connected with the axial side wall of the cross flow fan 200, and the cross flow fan 200 drives the mixed air fan 300 to rotate through the connecting shaft 310, so as to realize synchronous rotation of the cross flow fan 200 and the mixed air fan 300. The mixed air fan 300 is connected with the first driving motor 400 through the cross flow fan 200.

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

[0074] Optionally, the axis of the cross flow fan 200 and the axis of the mixed air fan 300 are located on the same straight line. That is, the cross flow fan 200 and the mixed air fan 300 are arranged coaxially.

[0075] In some optional embodiments, as shown in Figures 5 to 7 , the cross flow fan 200 further comprises a connecting plate 240, the connecting plate 240 is connected with 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 with the connecting position.

[0076] With the optional embodiment, the axial side wall of the cross-flow fan 200 is provided with the auxiliary air inlet 210, the axial side wall of the cross-flow fan 200 provided with the auxiliary air inlet 210 is provided with the connecting plate 240, and the connecting shaft 310 is connected to the connecting plate 240 at the connecting position. 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 central plate 241 and one or more connecting spokes 242. The central 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 central plate 241 and the inner side wall of the auxiliary air inlet 210. In the case of multiple connecting spokes 242, the multiple connecting spokes 242 are arranged along the circumference of the cross-flow fan 200.

[0078] With the optional embodiment, the central plate 241 is connected to the connecting shaft 310, i.e., the connecting position is located at the central plate 241. The two ends of the connecting spoke 242 are respectively connected to the outer side wall of the central plate 241 and the inner side wall of the auxiliary air inlet 210, and in the case of multiple connecting spokes 242, the multiple connecting spokes 242 are arranged along the circumference of the cross-flow fan 200. In this way, the indoor air driven by the mixing fan 300 can enter the interior of the cross-flow fan 200 through the space between adjacent two connecting spokes 242. On the basis of the axial side wall of the cross-flow fan 200 being provided with the auxiliary air inlet 210, the cross-flow fan 200 and the mixing fan 300 can be coaxially arranged through the connecting plate 240, so that when the cross-flow fan 200 drives the mixing fan 300 to rotate synchronously, the indoor air driven by the 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 of the central plate 241 towards the inner side wall of the auxiliary air inlet 210, the width of the connecting spoke 242 gradually increases.

[0080] In this embodiment, the diameter of the central plate 241 is smaller than the inner diameter of the auxiliary air inlet 210, and along the direction of the central plate 241 towards the inner side wall of the auxiliary air inlet 210, the width of the connecting spoke 242 gradually increases. In this way, the connection length of the connecting spoke 242 and the inner side wall of the auxiliary air inlet 210 can be increased, so as to improve the connection stability between the connecting spoke 242 and the inner side wall of the auxiliary air inlet 210, thereby increasing the stability of the cross-flow fan 200 in transmitting the rotating force to the mixing fan 300 and improving the working stability and reliability of the air conditioner indoor unit.

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

[0082] In the case that the mixing fan 300 is an axial fan, the outlet of the axial fan is arranged opposite to the auxiliary air inlet 210, and the indoor air flowed out by the axial fan can directly enter the auxiliary air inlet 210. In the case that the mixing fan 300 is a centrifugal fan, the centrifugal fan is coaxially arranged with the cross flow fan 200, and the outlet of the centrifugal fan is not arranged towards the auxiliary air inlet 210. The shell 100 is further configured with a communication air channel, two ends of the communication air channel are respectively communicated with the outlet of the centrifugal fan and the auxiliary air inlet 210, so as to guide the indoor air flowed out by the centrifugal fan to the auxiliary air inlet 210.

[0083] In some optional embodiments, as shown in Figure 3 and Figure 7 The air conditioner indoor unit further comprises a sealing device 500 arranged in the auxiliary air inlet air channel 120. In the case that the sealing device 500 opens the auxiliary air inlet air channel 120, the auxiliary air inlet air channel 120 is communicated with the heat exchange air channel 110. In the case that the sealing device 500 seals the auxiliary air inlet air channel 120, the auxiliary air inlet air channel 120 is disconnected with the heat exchange air channel 110.

[0084] In the embodiment, the sealing device 500 is arranged in the auxiliary air inlet air channel 120, and the sealing device 500 can open or seal the auxiliary air inlet air channel 120. In the case that the sealing device 500 opens the auxiliary air inlet air channel 120, the auxiliary air inlet air channel 120 is communicated with the heat exchange air channel 110. The indoor air without heat exchange can enter the heat exchange air channel 110 through the auxiliary air inlet air channel 120, so as to be mixed with the heat exchange air in the heat exchange air channel 110, thereby adjusting the temperature of the 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.

[0085] In the case that the sealing device 500 seals the auxiliary air inlet air channel 120, the indoor air cannot enter the heat exchange air channel 110 through the auxiliary air inlet air channel 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 the user.

[0086] For example, in the case that the temperature difference between the heat exchange air and the room temperature is less than a preset temperature difference, the sealing device 500 can seal the auxiliary air inlet air channel 120, so as to reduce the influence of the indoor air without heat exchange on the air outlet of the air conditioner indoor unit.

[0087] Exemplarily, the shell 100 comprises a duct shell and a volute 130, the duct shell defines a first air duct. The volute 130 is connected with the duct shell, the volute 130 defines a second air duct 132 and a third air duct 133, the second air duct 132 is arranged on an axial side wall of the volute 130, two ends of the third air duct 133 are respectively communicated with the first air inlet 112 and the air outlet 113 of the air conditioner, the auxiliary air inlet duct 120 comprises the first air duct and the second air duct 132, the heat exchange air duct 110 comprises the third air duct 133. In the case that the sealing device 500 opens the auxiliary air inlet duct 120, one end of the first air duct is communicated with the second air inlet, two ends of the second air duct 132 are respectively communicated with the other end of the first air duct and the third air duct 133. Wherein, 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 comprises a first axial side wall 131, the first axial side wall 131 is arranged opposite to the side wall of the auxiliary air inlet 210 provided with the cross-flow fan 200, and the first axial side wall 131 is configured with the second air duct 132.

[0089] In some optional embodiments, the sealing device 500 comprises a fixing member 510 and a sealing member 520, the fixing member 510 is connected with the inner side wall of the auxiliary air inlet duct 120, and the fixing member 510 is provided with a ventilation port 511. The sealing member 520 is connected with the fixing member 510, and the sealing member 520 is capable of moving relative to the ventilation port 511 to open or seal the ventilation port 511.

[0090] With the optional embodiment, the fixing member 510 is connected with the inner side wall of the auxiliary air inlet duct 120, and the sealing member 520 is connected with the fixing member 510, so that the sealing device 500 is arranged in the auxiliary air inlet duct 120. The sealing member 520 is capable of moving relative to the ventilation port 511 to open or seal the ventilation port 511. In this way, in the case that the sealing member 520 opens the ventilation port 511, the indoor air which has not been heat exchanged can flow in the auxiliary air inlet duct 120 through the ventilation port 511, that is, the sealing device 500 opens the auxiliary air inlet duct 120. In the case that the sealing member 520 seals the ventilation port 511, the sealing member 520 blocks the flow of the indoor air, that is, the sealing device 500 seals the auxiliary air inlet duct 120.

[0091] Further, the fixing member 510 comprises a fixing shaft 512 and a fixing plate 513, the fixing shaft 512 is arranged 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 with 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 ventilation ports 511. In the case that the number of the ventilation ports 511 is more than one, the plurality of ventilation ports 511 are arranged in the circumferential direction of the fixing shaft 512.

[0092] The sealing member 520 comprises a rotating plate 521 and sealing plates 522. The rotating plate 521 is annularly arranged and sleeved on the outer side of the fixed shaft 512, and the rotating plate 521 is rotationally connected with the fixed shaft 512. One end of each of the sealing plates 522 is connected with the rotating plate 521, the number of the sealing plates 522 is the same as that of the air vents 511 and each of the sealing plates 522 corresponds to one of the air vents 511, and each of the sealing plates 522 can rotate relative to the corresponding air vent 511 to open or seal the corresponding air vent 511.

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

[0094] In some optional embodiments, the end of the rotating plate 521 is provided with an annular rack 5211, and the sealing device 500 further comprises a first driving assembly and a first gear 530. The first driving assembly is connected with the fixed shaft 512, the first gear 530 is connected with the driving end of the first driving assembly, and the first gear 530 is engaged with the annular rack 5211.

[0095] In this embodiment, the first driving assembly is connected with the fixed shaft 512 to fix the first driving assembly. The driving end of the first driving assembly is connected with the first gear 530, and the first driving 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 rotation of the annular rack 5211 and thus drives the rotation of the rotating plate 521 relative to the fixed shaft 512. Each of the sealing plates 522 is connected with the rotating plate 521, and the rotating plate 521 rotates to drive the rotation of each of the sealing plates 522 relative to the corresponding air vent 511, thereby opening or closing the corresponding air vent 511.

[0096] When each of the sealing plates 522 opens the corresponding air vent 511, the sealing plate 522 is arranged to overlap the fixed plate 513 to expose the corresponding air vent 511, so that the corresponding air vent 511 can ventilate. When each of the sealing plates 522 seals the corresponding air vent 511, the sealing plate 522 covers the corresponding air vent 511 from above to shield the corresponding air vent 511 and seal the corresponding air vent 511.

[0097] Optionally, the width of each of the sealing plates 522 is greater than or equal to the width of the corresponding air vent 511. In this way, each of the sealing plates 522 can seal the corresponding air vent 511 when the sealing plate 522 moves to the position of the corresponding air vent 511, 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 comprises one or more sub-fixed plates, two ends of each sub-fixed plate are connected with the side wall of the fixed shaft 512 and the inner side wall of the auxiliary air inlet air duct 120, and when the number of the sub-fixed plates is more than one, the sub-fixed plates are arranged at intervals along the circumference of the fixed shaft 512, and the adjacent two sub-fixed plates, the fixed shaft 512 and the auxiliary air inlet air duct 120 enclose the air vent 511.

[0099] In the embodiment, two ends of each sub-fixed plate are connected with the side wall of the fixed shaft 512 and the inner side wall of the auxiliary air inlet air duct 120, and the sub-fixed plates are arranged at intervals along the circumference of the fixed shaft 512, so that the adjacent two sub-fixed plates, the outer side wall of the fixed shaft 512 and the inner side wall of the auxiliary air inlet air duct 120 enclose the air vent 511, so that the indoor air in the auxiliary air inlet air duct 120 can flow through the air vent 511 when passing through the sealing device 500.

[0100] Further, the width of the sealing plate 522 is less than or equal to the width of the corresponding sub-fixed plate, and the width of the air vent 511 is less than or equal to the width of the corresponding sub-fixed plate.

[0101] When the sealing plate 522 opens the air vent 511, the sealing plate 522 is arranged coincidentally with the corresponding sub-fixed plate, and the width of the sealing plate 522 is less than or equal to the width of the corresponding sub-fixed plate, so as to reduce the situation that the sealing plate 522 still blocks part of the air vent 511 when the air vent 511 is opened.

[0102] Embodiment two is different from embodiment one in that,

[0103] In some optional embodiments, as shown in Figure 2 The driving end of the first driving motor 400 is connected with the cross-flow fan 200, and the mixed air fan 300 is arranged in the auxiliary air inlet 210, and the mixed air fan 300 comprises a fan blade 320, and the end of the fan blade 320 is connected with the inner side wall of the auxiliary air inlet 210.

[0104] In the optional embodiment, the mixing fan 300 is arranged in the auxiliary air inlet 210, and the end of the fan blade 320 of the mixing fan 300 is connected with the inner side wall of the auxiliary air inlet 210, so that the mixing fan 300 is connected with the cross-flow fan 200. When the cross-flow fan 200 rotates, the inner side wall of the auxiliary air inlet 210 can drive the fan blade 320 to rotate, that is, drive the mixing fan 300 to rotate. Thus, the indoor air that has not been heat-exchanged flows into the inside of the cross-flow fan 200 and mixes with the heat-exchanged air in the inside of the cross-flow fan 200. In this embodiment, the fan blade 320 of the mixing fan 300 is directly connected with the inner side wall of the auxiliary air inlet 210, which reduces the use of connecting components, increases the connection stability of the 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, the number of the fan blades 320 is multiple, and the mixing fan 300 further comprises a central shaft 330, and the start ends of the multiple fan blades 320 are connected with the circumferential side wall of the central shaft 330 along the circumference of the cross-flow fan 200.

[0106] Further, the ratio of the inner diameter of the auxiliary air inlet 210 to the outer diameter of the central shaft 330 ranges from 3 to 4. In this way, the outer diameter of the central shaft 330 is reduced, so that the area of the auxiliary air inlet 210 occupied by the central shaft 330 is reduced, the air volume of the indoor air flowing into the inside of the cross-flow fan 200 and the air volume of the air conditioner indoor unit are increased, and the temperature adjustment capability of the heat-exchanged air is improved.

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

[0108] In this embodiment, the first end cover is provided with the auxiliary air inlet 210, and the mixing fan 300 is arranged in the auxiliary air inlet 210. The extension length of the first end cover is greater than or equal to the length of the 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 mixing fan 300. In this way, the mixing fan 300 can be located entirely in the auxiliary air inlet 210, the situation that the indoor air driven by the mixing fan 300 escapes from the auxiliary air inlet 210 is reduced, and the mixing air volume is increased.

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

[0110] In this embodiment, the second end cover is connected with the driving end of the first driving motor 400, and the extension length of the second end cover is less than the extension length of the first end cover, so that the space occupied by the second end cover is reduced, the compactness of the arrangement of the internal components of the air conditioner indoor unit is improved, and thus the volume and production cost of the air conditioner indoor unit are reduced.

[0111] Further, the first end of the fan blade 320 is arranged in sequence with the second end of the fan blade 320 along the rotation direction of the cross-flow fan 200. Wherein, the linear distance between the first end of the fan blade 320 and the impeller assembly 220 is less than the linear distance between the second end of the fan blade 320 and the impeller assembly 220 along the axial direction of the cross-flow fan 200.

[0112] In the embodiment, the linear distance between the first end of the fan blade 320 and the impeller assembly 220 is less than the linear distance between the second end of the fan blade 320 and the impeller assembly 220 along the axial direction of the cross-flow fan 200, and the fan blade 320 is arranged in an inclined manner. In this way, when the impeller rotates, the fan blade 320 rotates from the first end to the second end, and the fan blade 320 can drive the air to rotate from the second end to the first end along the fan blade 320, thereby driving the air flow, so that the indoor air enters the cross-flow fan 200 through the auxiliary air inlet 210.

[0113] The difference between the third embodiment and the first and second embodiments is that,

[0114] In some optional embodiments, as shown in Figures 9 to 11 The air conditioner indoor unit further comprises a second driving motor 410 and a third driving motor 420. The second driving motor 410 is connected with the cross-flow fan 200 to drive the cross-flow fan 200 to rotate; and the third driving motor 420 is connected with the mixed air fan 300 to drive the mixed air fan 300 to rotate.

[0115] With the optional embodiment, the second driving motor 410 can rotate synchronously with the third driving motor 420, so that the rotation speed of the cross-flow fan 200 is the same as the rotation speed of the mixed air fan 300, or the second driving motor 410 can rotate asynchronously with the third driving motor 420, so that the rotation speed of the cross-flow fan 200 is different from the rotation speed of the mixed air fan 300, thereby adjusting the ratio of the indoor air to the heat exchange air during the air mixing and the air volume of the air conditioner indoor unit. Similarly, the second driving motor 410 can rotate and the third driving motor 420 can not rotate, so that the indoor air without heat exchange cannot flow into the cross-flow fan 200, and the air mixing is not performed, so that the air conditioner indoor unit can normally blow air. In this way, the air conditioner indoor unit can have multiple air blowing modes to meet the multiple air blowing demands of the user and improve the user experience.

[0116] Further, the driving end of the second driving motor 410 is connected with the second end cover.

[0117] In some alternative embodiments, the indoor unit of the air conditioner also includes a volute 130, with a cross-flow fan 200 disposed inside 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 a third drive motor 420 is connected to the mounting assembly 600. A second drive motor 410 is disposed on the second axial sidewall of the volute 130.

[0118] In this optional embodiment, the cross-flow fan 200 is disposed within the volute 130, so that a vortex can be formed inside the cross-flow fan 200 when it rotates, thereby driving the heat exchange airflow. The mixing fan 300 is disposed on the side of the cross-flow fan 200 where the auxiliary air inlet 210 is provided. The first axial sidewall 131 of the volute 130 is disposed opposite to the auxiliary air inlet 210, that is, the first axial sidewall 131 and the mixing fan 300 are disposed on the same side of the cross-flow fan 200. 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 to mount the third drive motor 420 on the first axial sidewall 131, thereby fixing the mixing fan 300.

[0119] Furthermore, such as Figure 10 and Figure 11 As shown, the first axial sidewall 131 is provided with a second air duct 132, and the mixing fan 300 drives indoor air to enter the auxiliary air inlet 210 through the 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 sidewall of the second air duct 132, and the mounting plate 610 is provided with a ventilation opening 611, which communicates with the second air duct 132. The mounting protrusion 620 is connected to the mounting plate 610, and a third drive motor 420 is located on the mounting protrusion 620.

[0120] In this optional embodiment, indoor air enters the auxiliary air inlet 210 through the second air duct 132, allowing the indoor air to pass through the volute 130 and flow into the interior of the cross-flow fan 200 along its axial direction. The mounting plate 610 is connected to the inner wall of the second air duct 132, which can fix the mounting plate 610 in place. A mounting protrusion 620 is connected to the mounting plate 610, and a third drive motor 420 is mounted on the mounting protrusion 620 to fix the third drive motor 420 in place.

[0121] The mounting plate 610 is located inside the second air duct 132. The mounting plate 610 has a ventilation opening 611, which is connected to the second air duct 132. In this way, the indoor air 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 provide ventilation.

[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 is coaxially arranged with the cross-flow fan 200, and the mixed air fan 300 is coaxially arranged with the cross-flow fan 200.

[0123] Further, the third driving motor 420 is arranged on one side of the mounting plate 610, and the mixed air 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 driving motor 420 passes through the through hole to be connected with the connecting shaft 310, or the connecting shaft 310 passes through the through hole to be connected with the third driving motor 420.

[0124] In the optional embodiment, the third driving motor 420 and the mixed air fan 300 are arranged on the two sides of the mounting plate 610 respectively, the driving end of the third driving motor 420 passes through the through hole of the mounting plate 610 to be connected with the connecting shaft 310, and the driving end of the third driving motor 420 is rotationally connected with the through hole. The through hole can radially limit the driving end of the third driving motor 420, so as to reduce the radial swing of the mixed air fan 300 during rotation, and improve the working stability and reliability of the air conditioner indoor unit.

[0125] In the case that the connecting shaft 310 passes through the through hole to be connected with the third driving motor 420, the connecting shaft 310 is rotationally connected with the through hole, and the through hole can radially limit the connecting shaft 310, so as to reduce the radial swing of the mixed air fan 300 during rotation, and improve the working stability and reliability of the air conditioner indoor unit.

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

[0127] In the embodiment, the mounting protrusion 620 is connected with the side wall of the mounting plate 610 away from the auxiliary air inlet 210, the third driving motor 420 is connected with the mounting protrusion 620, and the third driving motor 420 and the mixed air fan 300 are arranged on the opposite sides of the mounting plate 610 respectively. That is, the mixed air fan 300 is arranged on the side of the mounting plate 610 facing the auxiliary air inlet 210.

[0128] The indoor air is first introduced into the mixed air duct under the driving of the mixed air fan 300, and then flows through the mixed air fan 300, and then flows into the cross-flow fan 200 through the auxiliary air inlet 210 under the driving of the mixed air fan 300, so as to be mixed with the heat exchange air in the cross-flow fan 200, and then flow out of the cross-flow fan 200 and the air conditioner indoor unit.

[0129] Exemplarily, as shown in FIG. 1, Figure 9 and Figure 11As shown, the air conditioner indoor unit further comprises a limiting member 700, the limiting member 700 is connected with the inner side wall of the auxiliary air inlet 210, the limiting member 700 is provided with a limiting hole 710, and the connecting shaft 310 is rotationally connected with the limiting hole 710.

[0130] In this embodiment, the limiting member 700 is connected with the inner side wall of the auxiliary air inlet 210, and the connecting shaft 310 is rotationally connected with the limiting hole 710 of the limiting member 700. The limiting hole 710 can also limit the radial movement of the connecting shaft 310, reduce the radial movement of the mixing fan 300 during rotation, and improve the working stability and reliability of the air conditioner indoor unit.

[0131] Optionally, a bearing is arranged in the limiting hole 710, the limiting hole 710 is connected with the outer ring of the bearing, the connecting shaft 310 is connected with 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 the rotational friction of the connecting shaft 310 on the limiting hole 710 is reduced.

[0132] In the case where the mixing fan 300 comprises the fan blade 320 and the central shaft 330, the connecting shaft 310 is coaxially connected with the central shaft 330, the axial side wall of the central shaft 330 is connected with the fan blade 320, one end of the connecting shaft 310 is connected with the driving end of the third driving motor 420, the other end of the connecting shaft 310 passes through the limiting hole 710 and is connected with 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 limiting member 700 is arranged in the auxiliary air inlet 210, and in the case where the other end of the connecting shaft 310 passes through the limiting hole 710 and is connected with the central shaft 330, i.e. the central shaft 330 is located in the auxiliary air inlet 210, the mixing fan 300 is arranged in the auxiliary air inlet 210. Further, the inner side wall of the auxiliary air inlet 210 extends away from the impeller assembly 220, i.e. the end cover 230 provided with the auxiliary air inlet 210 extends away from the impeller assembly 220, so as to increase the extension length of the auxiliary air inlet 210, and the mixing fan 300 can be arranged 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 through flow, or the end of the auxiliary air inlet 210 extends into the second air duct 132.

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

[0136] The difference between the fourth embodiment and the first to third embodiments is that,

[0137] In some optional embodiments, the number of the mixing fans 300 is two, and the auxiliary air inlets 210 are arranged on the opposite axial side walls of the cross-flow fan 200 in the case that the number of the mixing fans 300 is two. The two mixing fans 300 are arranged on the opposite axial side walls of the cross-flow fan 200 along the axial direction of the cross-flow fan 200.

[0138] In the embodiment, the auxiliary air inlets 210 are arranged on the opposite axial side walls of the cross-flow fan 200, and the two mixing fans 300 are arranged on the opposite axial side walls of the cross-flow fan 200. One 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 mixing fans 300 can enter the cross-flow fan 200 through the corresponding auxiliary air inlets 210. In this way, the indoor air entering the cross-flow fan 200 can be increased, and the situation that the indoor air mixed with the heat exchange air on the other axial side wall of the cross-flow fan 200 is less can be reduced when the auxiliary air inlet 210 is arranged on only one axial side wall of the cross-flow fan 200, and the uniformity of the mixing of the air conditioner indoor unit can be improved.

[0139] Further, the mixing fan 300 includes an axial flow fan, and the directions of the two axial flow fans are opposite in the case that the number of the axial flow fans is two. In this way, the indoor air driven by the two axial flow fans flows oppositely to flow into the cross-flow fan 200 from the auxiliary air inlets 210 at the two ends of the cross-flow fan 200.

[0140] Embodiment five is different from embodiments one to four in that,

[0141] In some optional embodiments, as shown in Figure 12 and Figure 13 In the case that the auxiliary air inlet air duct 120 is provided with the sealing device 500, the side wall of the auxiliary air inlet air duct 120 is provided with the avoiding groove 121, one end of the sealing plate 522 extends into the avoiding groove 121, and the other end of the sealing plate 522 is provided with the arc-shaped rack 5221. The sealing device 500 further includes the second driving assembly 540 and the second gear 550, and the second driving assembly 540 is connected with the shell 100. The second gear 550 is connected with the driving end of the second driving assembly 540, and the second gear 550 is engaged with the arc-shaped rack 5221.

[0142] With the optional embodiment, the side wall of the auxiliary air inlet air duct 120 is provided with a avoiding slot 121, one end of a sealing plate 522 is connected with the rotating plate 521, the other end of the sealing plate 522 extends into the avoiding slot 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 with the second gear 550, and the second driving assembly 540 drives the second gear 550 to rotate. The second gear 550 is engaged 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. The plurality of sealing plates 522 are connected with 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, so that the rotating plate 521 drives the plurality of sealing plates 522 to rotate synchronously, so as to realize the opening or sealing of the air vent 511.

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

[0144] In the embodiment, the side wall of the auxiliary air inlet air duct 120 is provided with the avoiding slot 121, the other end of the sealing plate 522 extends into the avoiding slot 121, and the sealing plate 522 and the fixed plate 513 are sequentially arranged. That is, the avoiding slot 121, the fixed plate 513 and the cross-flow fan 200 are sequentially arranged along the flow direction of the gas in the auxiliary air inlet air duct 120. In this way, in the case that the sealing plate 522 seals the air vent 511, the situation that the indoor air enters the inside of the cross-flow fan 200 through the avoiding slot 121 can be reduced, so as to improve the sealing effect of the sealing device 500 on the auxiliary air inlet air duct 120. That is, in the case that the mixed air is not needed, the amount of the indoor air entering the inside of the cross-flow fan 200 for mixing air is reduced.

[0145] The air conditioner provided by the embodiment of the present disclosure comprises the air conditioner indoor unit of any one of the above.

[0146] The air conditioner provided by the embodiment of the present disclosure comprises the air conditioner indoor unit of any one of the above.

[0147] The above description and drawings suffice to fully enable one skilled in the art to practice the embodiments of the present disclosure. Other embodiments can include structural and other changes. The embodiments are merely representative of possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and can be varied in a variety of ways. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. An air conditioner indoor unit characterized by comprising: The air conditioner indoor unit comprises: a shell; a cross-flow fan arranged in the shell, an axial side wall of the cross-flow fan being provided with an auxiliary air inlet communicating with the inside of the cross-flow fan; a mixed air fan arranged in the shell, an air outlet of the mixed air fan communicating with the auxiliary air inlet, the mixed air fan being capable of mixing indoor air with heat exchange air in the inside of the cross-flow fan; the shell is configured with a heat exchange air duct, the cross-flow fan being arranged in the heat exchange air duct, the air conditioner indoor unit further comprising a heat exchanger arranged in the heat exchange air duct, the heat exchanger and the cross-flow fan being arranged in sequence along the flow direction of air in the heat exchange air duct. 2.The indoor unit of the air conditioner according to claim 1, characterized by, The number of mixed air fans is one or two. In the case where the number of mixed air fans is one, one axial side wall of the cross-flow fan is provided with an auxiliary air inlet, and along the axial direction of the cross-flow fan, the mixed air fan is arranged on the side of the cross-flow fan provided with the auxiliary air inlet. In the case where the number of mixed air fans is two, the opposite two axial side walls of the cross-flow fan are both provided with auxiliary air inlets, and along the axial direction of the cross-flow fan, the two mixed air fans are arranged on the opposite two side walls of the cross-flow fan. 3.The indoor unit of the air conditioner according to claim 1, characterized by, Further comprising: a first driving motor, the cross-flow fan and the mixed air fan being connected with the first driving motor, the first driving motor driving the cross-flow fan and the mixed air fan to rotate synchronously.

4. The air conditioner indoor unit according to claim 3, wherein the first driving motor is connected with the cross-flow fan, the mixed air fan comprising a connecting shaft, the connecting shaft being connected with the axial side wall of the cross-flow fan, the cross-flow fan driving the mixed air fan to rotate through the connecting shaft.

5. The air conditioner indoor unit according to claim 3, wherein the first driving motor is connected with the cross-flow fan, the mixed air fan being arranged in the auxiliary air inlet, the mixed air fan comprising a fan blade, the end of the fan blade being connected with the inner side wall of the auxiliary air inlet. 6.The indoor unit of the air conditioner according to claim 1, characterized by, Further comprising: a second driving motor connected with the cross-flow fan to drive the cross-flow fan to rotate; a third driving motor connected with the mixed air fan to drive the mixed air fan to rotate.

7. The air conditioner indoor unit according to claim 1, wherein the mixed air fan comprises an axial flow fan or a centrifugal fan. 8.The air conditioning indoor unit according to any one of claims 1 to 7, characterized by, The cross-flow fan comprises: an impeller assembly comprising one or more impellers, in the case where the number of impellers is more than one, the interiors of the plurality of impellers being communicated; two end covers respectively connected with the opposite two ends of the impeller assembly, one or two end covers being provided with an auxiliary air inlet.

9. An air conditioner characterized by comprising: The air conditioner indoor unit according to any one of claims 1 to 8. ​

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