Air conditioner

Abstract

An air conditioner, comprising a shell, an indoor heat exchanger, a second fan, a ventilation volute, a first fan, a first air deflector, a second air deflector, a controller and a driving electric motor. A first air inlet is formed in the top of the shell. The driving electric motor is configured to drive the second fan and the first fan to rotate synchronously. The first air deflector is arranged at a first air outlet, and the second air deflector is arranged between the first air deflector and the first air outlet. The controller is configured in such a way that when receiving a control signal to control the air conditioner to enter a fresh air mode, the controller controls the first air deflector to turn over a first preset angle from an initial position, and controls the second air deflector to turn over a second preset angle from the initial position. The second preset angle is greater than the first preset angle.

Description

air conditioner

[0001] This application claims priority to application number CN202322095890.6 filed on August 4, 2023; application number CN202322095948.7 filed on August 4, 2023; application number CN202322100318.4 filed on August 4, 2023; application number CN202311 filed on September 28, 2023 The priority of application No. 278054.X; the priority of application No. CN202311281886.7 filed on September 28, 2023; the priority of application No. CN202311281935.7 filed on September 28, 2023; the priority of application No. 202311685864.7 filed on December 8, 2023, all of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the technical field of air conditioning, and in particular to an air conditioner. Background Art

[0003] Fresh air air conditioner is a healthy and comfortable air conditioner with fresh air function, which uses fans to achieve circulation and ventilation between room air and outdoor air.

[0004] Summary of the Invention

[0005] In one aspect, an air conditioner is provided. The air conditioner includes a housing, an indoor heat exchanger, a second fan, a ventilation volute, a first fan, a drive motor, a first air deflector, a second air deflector, a baffle, and a controller. The housing has a first inner cavity and a second inner cavity along its length. A first air inlet is defined at the top of the housing, and a first air outlet is defined at the front bottom of the housing. The indoor heat exchanger is disposed within the first inner cavity and is configured to exchange heat with air passing through the indoor heat exchanger to form a heat exchange airflow. The second fan is disposed within the first inner cavity and is positioned below the indoor heat exchanger. Indoor air, driven by the second fan, enters the housing through the first air inlet and, after heat exchange by the indoor heat exchanger, is discharged into the room through the first air outlet. The ventilation volute is disposed within the second inner cavity and has a second air inlet and a second air outlet. The first fan is disposed within the ventilation volute. The drive motor is configured to drive the second fan and the first fan to rotate synchronously. The first air guide plate is disposed at the first air outlet and extends along the length of the first air outlet. The second air guide plate is disposed between the first air guide plate and the indoor heat exchanger and extends along the length of the first air outlet; the second air outlet is adjacent to the first air inlet. The baffle is disposed at the second air inlet and is configured to open or close the second air inlet. The controller is configured to, upon receiving a control signal to control the air conditioner to enter fresh air mode, control the first air guide plate to rotate from an initial position to a first preset angle, and control the second air guide plate to rotate from an initial position to a second preset angle; the second preset angle being greater than the first preset angle. Upon receiving a control signal to control the air conditioner to exit fresh air mode, control the drive motor to decelerate and stop, and after the drive motor has completely stopped, control the baffle to close the second air inlet. Airflow passing through the first air outlet is directed by the second air guide plate to the first air guide plate, which then directs the airflow to the top of the housing.

[0006] In another aspect, an air conditioner is provided. The air conditioner includes a housing, an indoor heat exchanger, a second fan, a ventilation volute, a first fan, a drive motor, a first air deflector, a first motor, a second air deflector, a second motor, a baffle, and a controller. The housing has a first inner cavity and a second inner cavity along its length. A first air inlet is defined at the top of the housing, and a first air outlet is defined at the front bottom of the housing. The indoor heat exchanger is disposed within the first inner cavity and is configured to exchange heat with air passing through the indoor heat exchanger to form a heat exchange airflow. The second fan is disposed within the first inner cavity and below the indoor heat exchanger. Indoor air, driven by the second fan, enters the housing through the first air inlet and, after heat exchange by the indoor heat exchanger, is discharged into the room through the first air outlet. The ventilation volute is disposed within the second inner cavity and has a second air inlet and a second air outlet. The first fan is disposed within the ventilation volute. The drive motor is configured to drive the second fan and the first fan to rotate synchronously. The first air deflector is disposed at the first air outlet and extends along the length of the first air outlet. The first motor is disposed at the first air outlet and is configured to rotate the first air deflector. The second air deflector is disposed between the first air deflector and the indoor heat exchanger and extends along the length of the first air outlet. The second motor is disposed at the first air outlet and is configured to rotate the second air deflector. The second air outlet is adjacent to the first air inlet. The baffle is disposed at the second air inlet and is configured to open or close the second air inlet. The controller is configured to, when controlling the air conditioner to enter fresh air mode, control the first motor to rotate a third preset number of steps and the second motor to rotate a fourth preset number of steps; the fourth preset number of steps being greater than the third preset number of steps. Upon receiving a control signal to control the air conditioner to exit fresh air mode, the controller controls the drive motor to decelerate and stop, and after the drive motor has completely stopped, controls the baffle to close the second air inlet. The airflow passing through the first air outlet is guided to the first air guide plate by the second air guide plate, and the first air guide plate guides the airflow to the top of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG1 is a schematic diagram of the overall structure of a wall-mounted air conditioner according to some embodiments;

[0008] FIG2 is a front view of a wall-mounted air conditioner according to some embodiments;

[0009] FIG3 is a top view of a wall-mounted air conditioner according to some embodiments;

[0010] FIG4 is a side view of a wall-mounted air conditioner according to some embodiments;

[0011] FIG5 is a cross-sectional view of a wall-mounted air conditioner according to some embodiments;

[0012] FIG6 is a cross-sectional view of a first air guide plate of a wall-mounted air conditioner according to some embodiments;

[0013] FIG7 is a schematic diagram of the internal structure of a wall-mounted air conditioner according to some embodiments;

[0014] FIG8 is a front view of the internal structure of a wall-mounted air conditioner according to some embodiments;

[0015] FIG9 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0016] FIG10 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0017] FIG11 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0018] FIG12 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0019] FIG13 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0020] FIG14 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0021] FIG15 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0022] FIG16 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0023] FIG17 is a schematic diagram of the overall structure of a wall-mounted air conditioner according to some embodiments;

[0024] FIG18 is a front view of a wall-mounted air conditioner according to some embodiments;

[0025] FIG19 is a top view of a wall-mounted air conditioner according to some embodiments;

[0026] FIG20 is a side view of a wall-mounted air conditioner according to some embodiments;

[0027] FIG21 is a cross-sectional view of a wall-mounted air conditioner according to some embodiments;

[0028] FIG22 is a cross-sectional view of a first air guide plate of a wall-mounted air conditioner according to some embodiments;

[0029] FIG23 is a schematic diagram of the internal structure of a wall-mounted air conditioner according to some embodiments;

[0030] FIG24 is a front view of the internal structure of a wall-mounted air conditioner according to some embodiments;

[0031] FIG25 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0032] FIG26 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0033] FIG27 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0034] FIG28 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0035] FIG29 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0036] FIG30 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0037] FIG31 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0038] FIG32 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0039] FIG33 is a schematic diagram of the overall structure of a wall-mounted air conditioner according to some embodiments;

[0040] FIG34 is a front view of a wall-mounted air conditioner according to some embodiments;

[0041] FIG35 is a top view of a wall-mounted air conditioner according to some embodiments;

[0042] FIG36 is a side view of a wall-mounted air conditioner according to some embodiments;

[0043] FIG37 is a cross-sectional view of a wall-mounted air conditioner according to some embodiments;

[0044] FIG38 is a schematic structural diagram of a ventilation volute of a wall-mounted air conditioner according to some embodiments;

[0045] FIG39 is an exploded view of a ventilation volute of a wall-mounted air conditioner according to some embodiments;

[0046] FIG40 is an exploded view of a ventilation volute of a wall-mounted air conditioner according to some embodiments;

[0047] FIG41 is a schematic diagram of the internal structure of a wall-mounted air conditioner according to some embodiments;

[0048] FIG42 is a front view of the internal structure of a wall-mounted air conditioner according to some embodiments;

[0049] FIG43 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0050] FIG44 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0051] FIG45 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0052] FIG46 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0053] FIG47 is a flowchart of a wall-mounted air conditioner according to some embodiments;

[0054] FIG48 is a timing diagram of a wall-mounted air conditioner according to some embodiments;

[0055] FIG49 is a schematic structural diagram of an embodiment of an air conditioner indoor unit according to some embodiments;

[0056] FIG50 is a schematic structural diagram of the assembly of a fresh air module, a second fan, and a housing in an embodiment of an air conditioner indoor unit according to some embodiments;

[0057] FIG51 is a structural diagram illustrating the assembly of the fresh air module, the second fan, and the housing of an air conditioner indoor unit according to some embodiments from another angle;

[0058] FIG52 is a schematic structural diagram of a casing in one embodiment of an air conditioner indoor unit according to some embodiments;

[0059] FIG53 is an enlarged view of the structure at point A in FIG52;

[0060] FIG54 is a schematic structural diagram of a first fan connected to a second fan in an embodiment of an air conditioner indoor unit according to some embodiments;

[0061] FIG55 is a cross-sectional view of a first fan connected to a second fan in an embodiment of an air conditioner indoor unit according to some embodiments;

[0062] FIG56 is a schematic structural diagram of a driving motor in an embodiment of an air conditioner indoor unit according to some embodiments;

[0063] FIG57 is a schematic structural diagram of a fresh air module in an embodiment of an air conditioner indoor unit according to some embodiments;

[0064] FIG58 is a schematic structural diagram of a fresh air module in an embodiment of an air conditioner indoor unit according to some embodiments from another angle;

[0065] FIG59 is an exploded view of a fresh air module in an embodiment of an air conditioner indoor unit according to some embodiments;

[0066] FIG60 is a schematic structural diagram of an embodiment of an air conditioner indoor unit according to some embodiments when a connecting member and a first volute are assembled;

[0067] FIG61 is a schematic structural diagram of a first volute in one embodiment of an air conditioner indoor unit according to some embodiments;

[0068] FIG62 is a cross-sectional view of an embodiment of an air conditioner indoor unit according to some embodiments when a connecting member and a first volute are assembled;

[0069] FIG63 is a schematic structural diagram of an embodiment of an air conditioner indoor unit according to some embodiments when a connecting member and a first fan are assembled;

[0070] FIG64 is a schematic structural diagram of a first fan in an embodiment of an air conditioner indoor unit according to some embodiments;

[0071] FIG65 is a schematic structural diagram of a first fan in an embodiment of an air conditioner indoor unit according to some embodiments from another angle;

[0072] FIG66 is a schematic diagram of a half-section structure of an embodiment of an air conditioner indoor unit when a connecting member and a first fan are assembled according to some embodiments;

[0073] FIG67 is a schematic structural diagram of a connecting member in one embodiment of an air conditioner indoor unit according to some embodiments;

[0074] FIG68 is a schematic structural diagram of a connecting member in an embodiment of an air conditioner indoor unit according to some embodiments from another angle;

[0075] FIG69 is a schematic diagram of a half-section structure of a connector in one embodiment of an air conditioner indoor unit according to some embodiments;

[0076] FIG70 is a schematic structural diagram of a bearing in an embodiment of an air conditioner indoor unit according to some embodiments;

[0077] FIG71 is a cross-sectional view of a bearing in one embodiment of an air conditioner indoor unit according to some embodiments;

[0078] FIG72 is a schematic diagram of the structure of a bearing ball in one embodiment of an air conditioner indoor unit according to some embodiments;

[0079] FIG73 is a schematic structural diagram of the assembly of a bearing and a bearing seat in an embodiment of an air conditioner indoor unit according to some embodiments;

[0080] FIG74 is a cross-sectional view of an embodiment of an air conditioner indoor unit during assembly of a bearing and a bearing seat according to some embodiments;

[0081] FIG75 is a schematic structural diagram of a bearing seat in one embodiment of an air conditioner indoor unit according to some embodiments;

[0082] FIG76 is a schematic structural diagram of a bearing seat at another angle in one embodiment of an air conditioner indoor unit according to some embodiments;

[0083] FIG77 is a schematic structural diagram of an embodiment of an air conditioner indoor unit according to some embodiments;

[0084] FIG78 is a schematic diagram of the internal structure of an air conditioner indoor unit according to some embodiments;

[0085] FIG79 is a schematic structural diagram of a fresh air module, a second fan, and a drive motor assembled inside a housing in one embodiment of an air conditioner indoor unit according to some embodiments;

[0086] FIG80 is a schematic structural diagram of an assembly of a fresh air module and a housing in an embodiment of an air conditioner indoor unit according to some embodiments;

[0087] Figure 81 is an enlarged view of the structure at point A in Figure 80;

[0088] FIG82 is a schematic diagram of the structure inside a casing of an embodiment of an air conditioner indoor unit according to some embodiments;

[0089] FIG83 is an enlarged view of the structure at point B in FIG82;

[0090] FIG84 is a schematic structural diagram of a bearing seat assembled inside a casing in one embodiment of an air conditioner indoor unit according to some embodiments;

[0091] FIG85 is an enlarged view of the structure at point C in FIG84;

[0092] FIG86 is a schematic structural diagram of a fresh air module in an embodiment of an air conditioner indoor unit according to some embodiments;

[0093] FIG87 is an exploded view of a fresh air module in an embodiment of an air conditioner indoor unit according to some embodiments;

[0094] FIG88 is a schematic structural diagram of a first fan connected to a second fan in an embodiment of an air conditioner indoor unit according to some embodiments;

[0095] FIG89 is a cross-sectional view of a first fan connected to a second fan in an embodiment of an air conditioner indoor unit according to some embodiments;

[0096] FIG90 is a schematic structural diagram of a seal and a bearing assembled in an embodiment of an air conditioner indoor unit according to some embodiments;

[0097] FIG91 is a structural diagram illustrating the assembly of a seal and a bearing from another angle in an embodiment of an air conditioner indoor unit according to some embodiments;

[0098] FIG92 is a cross-sectional view of an assembly of a seal, a bearing, and a bearing seat in an embodiment of an air conditioner indoor unit according to some embodiments;

[0099] FIG93 is a schematic diagram of the structure of a bearing ball in one embodiment of an air conditioner indoor unit according to some embodiments;

[0100] FIG94 is a schematic structural diagram of an embodiment of an air conditioner indoor unit according to some embodiments when a seal, a bearing, and a bearing seat are assembled;

[0101] FIG95 is a schematic structural diagram of a bearing seat in one embodiment of an air conditioner indoor unit according to some embodiments;

[0102] FIG96 is a schematic structural diagram of a bearing seat at another angle in one embodiment of an air conditioner indoor unit according to some embodiments;

[0103] FIG97 is a schematic structural diagram of an embodiment of an indoor unit of an air conditioner according to some embodiments;

[0104] FIG98 is a schematic structural diagram of an embodiment of an air conditioner indoor unit according to some embodiments, wherein a fresh air module, a second fan, and a housing are assembled;

[0105] FIG99 is a structural diagram illustrating the assembly of the fresh air module, the second fan, and the housing of an air conditioner indoor unit according to some embodiments from another angle;

[0106] FIG100 is a schematic structural diagram of a casing in one embodiment of an air conditioner indoor unit according to some embodiments;

[0107] FIG101 is a schematic diagram of a structure in which a first fan and a second fan are connected in one embodiment of an air conditioner indoor unit according to some embodiments;

[0108] FIG102 is a cross-sectional view of a first fan connected to a second fan in an embodiment of an air conditioner indoor unit according to some embodiments;

[0109] FIG103 is a schematic diagram of the structure of a driving motor in an embodiment of an air conditioner indoor unit according to some embodiments;

[0110] FIG104 is a schematic structural diagram of a bearing in an embodiment of an air conditioner indoor unit according to some embodiments;

[0111] FIG105 is a cross-sectional view of a bearing in one embodiment of an air conditioner indoor unit according to some embodiments;

[0112] FIG106 is a schematic diagram of the structure of a bearing ball in one embodiment of an air conditioner indoor unit according to some embodiments;

[0113] FIG107 is a schematic structural diagram of an embodiment of an air conditioner indoor unit during assembly of a bearing and a bearing seat according to some embodiments;

[0114] FIG108 is a cross-sectional view of an embodiment of an air conditioner indoor unit during assembly of a bearing and a bearing seat according to some embodiments;

[0115] FIG109 is a schematic structural diagram of a bearing seat in an embodiment of an air conditioner indoor unit according to some embodiments;

[0116] FIG110 is a schematic structural diagram of a bearing seat at another angle in one embodiment of an air conditioner indoor unit according to some embodiments;

[0117] FIG111 is a schematic structural diagram of a fresh air module in an embodiment of an air conditioner indoor unit according to some embodiments;

[0118] FIG112 is a schematic structural diagram of a fresh air module in an embodiment of an air conditioner indoor unit according to some embodiments from another angle;

[0119] FIG113 is a schematic structural diagram of a first fan in an embodiment of an air conditioner indoor unit according to some embodiments;

[0120] FIG114 is an exploded view of a fresh air module in an embodiment of an air conditioner indoor unit according to some embodiments;

[0121] FIG115 is a cross-sectional view of a ventilation volute in one embodiment of an air conditioner indoor unit according to some embodiments;

[0122] Figure 116 is a partial enlarged view of point A in Figure 115;

[0123] FIG117 is a partial enlarged view of point B in FIG115;

[0124] FIG118 is a schematic structural diagram of a first volute in one embodiment of an air conditioner indoor unit according to some embodiments;

[0125] FIG119 is a schematic structural diagram of a first volute in an embodiment of an air conditioner indoor unit according to some embodiments from another angle;

[0126] FIG120 is a schematic structural diagram of a second volute in one embodiment of an air conditioner indoor unit according to some embodiments;

[0127] FIG121 is a schematic structural diagram of a second volute in an embodiment of an air conditioner indoor unit according to some embodiments from another angle;

[0128] FIG122 is a schematic structural diagram of a ventilation shell in an embodiment of an indoor unit of an air conditioner according to some embodiments. DETAILED DESCRIPTION

[0129] The following will be combined with the accompanying drawings to clearly and completely describe some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0130] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its other forms, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0131] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0132] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates, for example, that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0133] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0134] The use of "adapted to" or "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0135] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0136] In the present disclosure, an air conditioner (e.g., a wall-mounted air conditioner) performs a refrigeration cycle of a wall-mounted air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, throttling, and evaporation, and supplies cold or heat to the air that has been conditioned and heat-exchanged. The compressor compresses the refrigerant gas in a low-temperature, low-pressure state and discharges the refrigerant gas in a high-temperature, high-pressure state. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve throttles the liquid-phase refrigerant in a high-temperature, high-pressure state condensed in the condenser into a low-pressure gas-liquid two-phase refrigerant.

[0137] In the evaporator, the refrigerant expands in the expansion valve and absorbs heat, evaporating at a low temperature and pressure. The refrigerant gas then returns to the compressor. The evaporator achieves cooling by utilizing the refrigerant's latent heat of evaporation to exchange heat with the material being cooled.

[0138] An air conditioner consists of an indoor unit and an outdoor unit, with the indoor unit comprising a housing. Throughout the entire cycle, the indoor unit regulates the temperature of the indoor space. The outdoor unit of a wall-mounted air conditioner refers to the portion of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of a wall-mounted air conditioner includes the indoor heat exchanger, and the expansion valve can be provided in either the indoor or outdoor unit. The indoor and outdoor heat exchangers can function as either condensers or evaporators, respectively. When the indoor heat exchanger functions as a condenser, the indoor unit functions as a heater in heating mode. When the indoor heat exchanger functions as an evaporator, the indoor unit functions as a cooler in cooling mode.

[0139] In the following text, the first fan may be referred to as a fresh air fan. The second air outlet may be referred to as a fresh air outlet. The first fan may be referred to as a fresh air fan. The second air inlet may be referred to as a fresh air inlet. The vent may be referred to as a fresh air outlet. The limiting space may be referred to as a limiting slot; the engaging space may be referred to as a engaging slot; the positioning space may be referred to as a positioning slot; the installation space may be referred to as an installation slot; and the through-passage may be referred to as a through-passage.

[0140] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0141] As shown in Figures 1 to 16 , in some embodiments of the wall-mounted air conditioner disclosed herein, the wall-mounted air conditioner includes: a housing 100, an indoor heat exchanger, a second fan 400, a ventilation volute 700, a first fan 300, a first air deflector 230, a second air deflector 240, a controller, and a drive motor 500. The housing 100 has a first inner cavity and a second inner cavity defined along its length. The housing 100 has a first air inlet 101 defined at the top, and a first air outlet 102 defined at the front bottom.

[0142] The indoor heat exchanger is arranged in the first inner cavity, and the indoor heat exchanger exchanges heat for the air passing through the indoor heat exchanger to form a heat exchange airflow; the second fan 400 is arranged in the first inner cavity, and the second fan 400 is arranged below the indoor heat exchanger; the indoor airflow enters the shell 100 through the first air inlet 101 under the action of the second fan 400, and is output to the room through the first air outlet 102 after being heat exchanged by the indoor heat exchanger.

[0143] The ventilation volute 700 is disposed within the second inner cavity and is provided with a second air inlet and a second air outlet 720 . The first fan 300 is disposed within the ventilation volute 700 ; the drive motor 500 drives the second fan 400 and the first fan 300 to rotate synchronously. The second air outlet 720 is located near the first air inlet 101 .

[0144] The first air guide plate 230 is arranged at the first air outlet 102, and the first air guide plate 230 is arranged along the length direction of the first air outlet 102; the second air guide plate 240 is arranged between the first air guide plate 230 and the indoor heat exchanger, and the second air guide plate 240 is arranged along the length direction of the first air outlet 102.

[0145] The controller is configured to, when the air conditioner enters fresh air mode, control the first air guide plate 230 to rotate from its initial position to a first preset angle, and control the second air guide plate 240 to rotate from its initial position to a second preset angle. The second preset angle is greater than the first preset angle. Airflow passing through the first air outlet 102 is directed by the second air guide plate 240 to the first air guide plate 230, which then directs the airflow to the top of the housing 100.

[0146] In some configurations, the drive motor drives the second fan to rotate synchronously with the first fan. Therefore, when the drive motor drives the first fan, the second fan also rotates. If the air deflector remains closed, the air duct will produce abnormal noises such as blockage, creaking, and whistling. If the first and second air deflectors are opened to their maximum angle, the airflow will blow directly toward the user, causing discomfort.

[0147] In the present disclosure, the tilting angle of the second air guide plate 240 is greater than the tilting angle of the first air guide plate 230 through the above solution, so the opening of the first air guide plate 230 is smaller. The airflow output by the second fan 400 is guided by the second air guide plate 240 and output to the first air guide plate 230. Under the action of the first air guide plate 230, the airflow is directed upward, so that the airflow output from the first air outlet 102 flows to the top of the housing 100. The airflow flows to the second air outlet 720 and is mixed with the fresh air and output to the room. The airflow output by the second fan 400 can be output through the first air outlet 102, avoiding the airflow being unable to be output inside the first inner cavity of the housing 100, resulting in abnormal noises such as muffled sounds, rumbling sounds, and whistling sounds. In addition, the airflow output through the first air outlet 102 is directed upward, avoiding the airflow blowing directly towards the user, thereby improving the use effect of the air conditioner.

[0148] In addition, the airflow output from the first air outlet 102 flows to the top of the shell 100. After the airflow is mixed with the fresh air, it re-enters the shell 100 through the first air inlet 101 for circulation, which can achieve the effect of circulating air and further improve the use effect of the air conditioner.

[0149] In addition, the airflow output from the first air outlet 102 flows to the top of the shell 100. This airflow can further drive the flow of fresh air, making the fresh air flow flow farther, increasing the amount of fresh air in the room to improve the effect of the fresh air mode.

[0150] In some embodiments, the control signal is sent by the user through a remote control or mobile phone software, or sent through the cloud.

[0151] In some embodiments, when the first air guide plate 230 is in the initial position, the first air guide plate 230 completely blocks the first air outlet 102, and the tilt angle of the first air guide plate 230 is 0°. When the air conditioner enters the fresh air mode, the first air guide plate 230 completely blocks the first air outlet 102 and then tilts to a first preset angle to open the first air outlet 102.

[0152] When the second air guide plate 240 is at the initial position, the turning angle of the second air guide plate 240 is 0°. When the air conditioner enters the fresh air mode, the second air guide plate 240 starts to turn from the initial position to a second preset angle.

[0153] In some embodiments, the second preset angle is twice the value of the first preset angle. This design ensures that the second air guide plate 240 can direct the airflow passing through the second fan 400 to the first air guide plate 230; and ensures that the first air guide plate 230 can direct the airflow passing through the second fan 400 to the top of the housing 100 and mix it with the fresh air at the second air outlet 720.

[0154] 9 to 15 , in some embodiments, the first preset angle is 5° to 8°, and the second preset angle is 10° to 16°. At these angles, the second air guide plate 240 directs the airflow passing through the second fan 400 toward the first air guide plate 230, ensuring that the airflow is directed by the first air guide plate 230 so that a sufficient amount of airflow is directed above the housing 100 to mix with the fresh air.

[0155] 9 to 15 , in some embodiments, the controller is configured to, when controlling the air conditioner to enter the fresh air mode, control the first air guide plate 230 to flip by a first preset number of steps, and control the second air guide plate 240 to flip by a second preset number of steps. The first preset number of steps is greater than the second preset number of steps.

[0156] Referring to Figures 9 to 15 , in some embodiments, the first preset number of steps is 3 to 5, and the second preset number of steps is 6 to 10. That is, upon receiving a control signal to control the air conditioner to enter fresh air mode, the controller is configured to control the first air guide plate 230 to flip 3 to 5 steps and the second air guide plate 240 to flip 6 to 10 steps. This preset number of steps allows the second air guide plate 240 to direct the airflow passing through the second fan 400 toward the first air guide plate 230, ensuring that the first air guide plate 230 can direct the airflow passing through the second fan 400 toward the top of the housing 100 and mix it with the fresh air at the second air outlet 720. Furthermore, the airflow passing through the second fan 400 can smoothly pass through the second air guide plate 240 and the first air guide plate 230 and be output from the first air outlet 102, preventing the airflow passing through the second fan 400 from being unable to be output within the first inner cavity, resulting in abnormal noise such as muffled sounds, gurgling sounds, or whistling sounds.

[0157] 9 to 15 , in some embodiments, the controller is configured to, when receiving a control signal to control the air conditioner to enter the fresh air mode, control the first air guide plate 230 to flip to a first preset angle, wherein the first preset angle is 5° to 8°. In other words, the controller is configured to control the first air guide plate 230 to flip 3 to 5 steps so that the flip angle of the first air guide plate 230 is 5° to 8°. At this angle, it is ensured that the first air guide plate 230 partially opens the first air outlet 102, and the opened portion of the first air outlet 102 is sufficient to output the airflow through the second fan 400, thereby avoiding the airflow through the second fan 400 being unable to be output in the first inner cavity, resulting in abnormal noises such as muffled sounds, rumbling sounds, and whistling sounds.

[0158] The controller is configured to, when the air conditioner enters fresh air mode, control the second air guide plate 240 to flip to a second preset angle, which is between 10° and 16°. In other words, the controller is configured to control the second air guide plate 240 to flip 6 to 10 steps, so that the flip angle of the second air guide plate 240 is between 10° and 16°. At this angle, the second air guide plate 240 directs the airflow passing through the second fan 400 to the first air guide plate 230, ensuring that the airflow is directed by the first air guide plate 230 so that a sufficient amount of airflow is directed to the upper part of the housing 100 to mix with the fresh air.

[0159] In some embodiments, when the first air guide plate 230 flips, the flip angle of each step in the first preset number of steps is the flip angle of the first air guide plate 230 divided by the value of the first preset number of steps.

[0160] In some embodiments, the value of the first preset step is 3, and the flip angle of the first air guide plate 230 is 5°. Then, the flip angle of the first air guide plate 230 is 5° / 3 each time a preset step is run.

[0161] In some embodiments, the value of the first preset step is 5, and the flip angle of the first air guide plate 230 is 8°. Then, the flip angle of the first air guide plate 230 is 8° / 5 each time a preset step is run.

[0162] In some embodiments, when the second air guide plate 240 flips, the flip angle of each step in the second preset number of steps is the flip angle of the second air guide plate 240 divided by the value of the second preset number of steps.

[0163] In some embodiments, the value of the second preset step is 6, and the flip angle of the second air guide plate 240 is 10°. Then, the flip angle of the second air guide plate 240 is 10° / 6 each time a preset step is run.

[0164] In some embodiments, the value of the second preset step is 10, and the flip angle of the second air guide plate 240 is 16°. Then, the flip angle of the second air guide plate 240 is 16° / 10 each time a preset step is run.

[0165] 9 to 15 , in some embodiments, the controller is configured to, upon receiving a control signal to control the air conditioner to enter fresh air mode, control the first air deflector 230 to rotate to a first preset angle, and after a preset time, control the second air deflector 240 to rotate to a second preset angle. For example, after the first air deflector 230 is controlled to rotate to the first preset angle, a timer begins, and the controller determines whether the preset time has elapsed. If so, the controller controls the second air deflector 240 to rotate to the second preset angle.

[0166] 9 to 15 , in some embodiments, the controller is configured to, upon receiving a control signal to control the air conditioner to enter fresh air mode, control the first air guide plate 230 to rotate a first preset number of steps, and after a preset time, control the second air guide plate 240 to rotate a second preset number of steps. For example, after the first air guide plate 230 is controlled to rotate a first preset number of steps, a timer begins counting, and the controller determines whether the preset time has expired. If so, the controller controls the second air guide plate 240 to rotate a second preset number of steps.

[0167] In some embodiments, the preset time is set by the user, factory set, or sent from the cloud.

[0168] In some embodiments, the controller is configured to: when receiving a control signal to control the air conditioner to enter the fresh air mode, control the first air guide plate 230 to flip to a first preset angle and control the second air guide plate 240 to flip to a second preset angle.

[0169] In some embodiments, the controller is configured to: when receiving a control signal to control the air conditioner to enter the fresh air mode, control the first air guide plate 230 to flip a first preset number of steps while controlling the second air guide plate 240 to flip a second preset number of steps.

[0170] In some embodiments, a baffle is provided at the second air inlet to seal the second air inlet. A display screen is provided on the front panel of the housing 100 to display information such as temperature or time. The controller is configured to turn on the display screen when the air conditioner is controlled to enter the fresh air mode.

[0171] In some embodiments, the wall-mounted air conditioner further includes an outdoor unit and a compressor and an outdoor heat exchanger disposed in the outdoor unit. The compressor is configured to output refrigerant to the indoor heat exchanger and the outdoor heat exchanger to complete cooling or heating of the indoor heat exchanger, thereby realizing the heating mode or cooling mode of the air conditioner. In fresh air mode, the user only needs to input outdoor fresh air into the room. In this mode, the compressor is in a stopped state, and at this time, there is no temperature change in the indoor heat exchanger. The controller is configured to: when the air conditioner is controlled to enter fresh air mode, control the drive motor 500 to drive the second fan 400 and the first fan 300 to rotate synchronously.

[0172] In some embodiments, entering the fresh air mode occurs when the air conditioner is in an off state. The controller is configured to, when controlling the air conditioner to enter the fresh air mode, turn on the drive motor 500, control the baffle to open the second air inlet, control the first air guide plate 230 to rotate to a first preset angle, and control the second air guide plate 240 to rotate to a second preset angle.

[0173] In some embodiments, when the first air guide plate 230 completely closes the first air outlet 102, the flip angle of the first air guide plate 230 is 0°. When the air conditioner enters the fresh air mode, the first air guide plate 230 starts to flip to a first preset angle from when the first air outlet 102 is completely closed.

[0174] When the second air guide plate 240 completely closes the first air outlet 102, the flip angle of the second air guide plate 240 is 0. When entering the fresh air mode, the second air guide plate 240 starts to flip to a second preset angle from when the first air outlet 102 is completely closed.

[0175] After the air conditioner enters the fresh air mode, the flip angle of the first air guide plate 230 is between 5° and 8°, which refers to the flip angle of the first air guide plate 230 from completely closing the first air outlet 102 to the completion of the flip of the first air guide plate 230.

[0176] After the air conditioner enters the fresh air mode, the flip angle of the second air guide plate 240 is between 10° and 16°, which refers to the flip angle of the second air guide plate 240 from completely closing the first air outlet 102 to the completion of the flip of the second air guide plate 240.

[0177] In some embodiments, the controller is configured to: when controlling the air conditioner to exit the fresh air mode, turn off the drive motor 500, control the second air guide plate 240 and the first air guide plate 230 to flip to the initial position; and control the baffle to close the second air inlet.

[0178] Referring to Figures 9 to 13 , in some embodiments, the wall-mounted air conditioner further includes an outdoor temperature sensor configured to detect the outdoor temperature. In some embodiments, the controller is configured to: after controlling the air conditioner to enter fresh air mode, control the outdoor temperature sensor to detect the outdoor temperature and determine whether the outdoor temperature is greater than a preset temperature value; when the outdoor temperature is greater than the preset temperature value, activate the drive motor 500, control the baffle to open the second air inlet, control the first air guide plate 230 to rotate to a first preset angle, and control the second air guide plate 240 to rotate to a second preset angle. This prevents the introduction of outdoor fresh air into the room when the outdoor temperature is too low, which would cause the indoor temperature to be too low and affect the performance of the air conditioner, thereby reducing the significant impact of the outdoor fresh air on the indoor temperature and improving the performance of the air conditioner.

[0179] If the outdoor temperature is lower than the preset temperature value, no action will be taken. The outdoor temperature sensor will be controlled to detect the outdoor temperature again after the preset interval.

[0180] In some embodiments, the preset temperature value and the preset interval time are set by the user, factory set, or sent from the cloud.

[0181] In some embodiments, the preset temperature value is -15°C, and the preset interval time is 1 hour.

[0182] In some embodiments, the drive motor 500 has a single output shaft, with both ends of the output shaft coaxially connected to the first fan 300 and the second fan 400. When the drive motor 500 rotates, the output shaft drives the second fan 400 and the first fan 300 to rotate simultaneously.

[0183] In some embodiments, the drive motor 500 has two output shafts, namely a first output shaft and a second output shaft. The first output shaft is coaxially connected to the second fan 400, and the second output shaft is coaxially connected to the first fan 300. When the drive motor 500 is running, the first output shaft and the second output shaft rotate synchronously.

[0184] In some embodiments, the output shaft of the drive motor 500 is connected to the first fan 300. The first fan 300 is provided with a transmission assembly, which is connected to the second fan 400. The drive motor 500 drives the first fan 300 to rotate, and the first fan 300 drives the second fan 400 to rotate synchronously via the transmission assembly, thereby achieving a single drive motor 500 driving the first fan 300 and the second fan 400 to rotate synchronously.

[0185] 1 to 8 , in some embodiments, the output shaft of the drive motor 500 is connected to the second fan 400. The second fan 400 is provided with a transmission assembly, which is connected to the first fan 300. The drive motor 500 drives the second fan 400 to rotate, and the second fan 400 drives the first fan 300 to rotate synchronously via the transmission assembly, thereby achieving a single drive motor 500 driving the first fan 300 and the second fan 400 to rotate synchronously.

[0186] In some embodiments, the output shaft of the driving motor 500 is connected to the second fan 400 . The second fan 400 is provided with a connecting shaft at one end facing the first fan 300 . The connecting shaft passes through the ventilation volute 700 and is connected to the first fan 300 .

[0187] In some embodiments, the area of ​​the first air guide plate 230 is larger than the area of ​​the second air guide plate 240. The length directions of the first air guide plate 230 and the second air guide plate 240 are both the same as the length direction of the housing 100, and the width of the first air guide plate 230 is larger than the width of the second air guide plate 240.

[0188] Referring to Figures 1 to 8, and Figure 16, in addition, some embodiments of the present disclosure also provide a wall-mounted air conditioner, which includes: a shell 100, an indoor heat exchanger, a second fan 400, a ventilation volute 700, a first fan 300, a first air guide plate 230, a first motor, a second air guide plate 240, a second motor, a controller and a drive motor 500, wherein a first inner cavity and a second inner cavity are provided inside the shell 100 along the length direction; a first air inlet 101 is provided at the top of the shell 100, and a first air outlet 102 is provided at the front bottom of the shell 100.

[0189] The indoor heat exchanger is arranged in the first inner cavity, and the indoor heat exchanger exchanges heat for the air passing through the indoor heat exchanger to form a heat exchange airflow; the second fan 400 is arranged in the first inner cavity, and the second fan 400 is arranged below the indoor heat exchanger; the indoor airflow enters the shell 100 through the first air inlet 101 under the action of the second fan 400, and is output to the room through the first air outlet 102 after being heat exchanged by the indoor heat exchanger.

[0190] The ventilation volute 700 is arranged in the second inner cavity, and a second air inlet and a second air outlet 720 are opened on the ventilation volute 700, and the second air outlet 720 is close to the first air inlet 101; the first fan 300 is arranged in the ventilation volute 700; the driving motor 500 drives the second fan 400 and the first fan 300 to rotate synchronously.

[0191] The first air guide plate 230 is arranged at the first air outlet 102; the first motor is arranged at the first air outlet 102, and the first motor is configured to drive the first air guide plate 230 to flip; the second air guide plate 240 is arranged between the first air guide plate 230 and the indoor heat exchanger, and the second air guide plate 240 is arranged along the length direction of the first air outlet 102; the second motor is arranged at the first air outlet 102, and the second motor is configured to drive the second air guide plate 240 to flip.

[0192] The controller is configured to, when receiving a control signal to control the air conditioner to enter a fresh air mode, control the first motor to rotate by a third preset number of steps and control the second motor to rotate by a fourth preset number of steps, where the fourth preset number of steps is greater than the third preset number of steps.

[0193] The airflow passing through the first air outlet 102 is guided to the first air guide plate 230 by the second air guide plate 240 , and the first air guide plate 230 guides the airflow to the top of the housing 100 .

[0194] Through the above solution, by setting the number of twisting steps of the first and second motors, the number of twisting steps of the second air guide plate 240 can be made greater than the number of twisting steps of the first air guide plate 230, thereby forming a smaller opening. The airflow output by the second fan 400 is guided by the second air guide plate 240 and output to the first air guide plate 230. Under the action of the first air guide plate 230, the airflow is directed upward so that it flows to the second air outlet 720 and mixes with the fresh air. The airflow output by the second fan 400 can be output through the first air outlet 102, avoiding abnormal noise such as muffled sound, rumbling sound, and whistling sound caused by the airflow being unable to be output within the first inner cavity of the housing 100. In addition, the airflow output through the first air outlet 102 is directed upward, which can prevent the airflow from blowing directly towards the user, thereby improving the performance of the air conditioner.

[0195] In some embodiments, the fourth preset number of steps is twice the third preset number of steps. This design ensures that the second air guide plate 240 can direct the airflow passing through the second fan 400 to the first air guide plate 230; and ensures that the first air guide plate 230 can direct the airflow passing through the second fan 400 to the top of the housing 100 and mix it with the fresh air at the second air outlet 720.

[0196] In some embodiments, the third preset number of steps is 3 to 5, and the fourth preset number of steps is 6 to 10. With this preset number of steps, the second air guide plate 240 can direct the airflow passing through the second fan 400 to the first air guide plate 230 , ensuring that the first air guide plate 230 can direct the airflow passing through the second fan 400 to the top of the housing 100 and mix it with the fresh air at the second air outlet 720 . Furthermore, the airflow passing through the second fan 400 can smoothly pass through the second air guide plate 240 and the first air guide plate 230 and be output from the first air outlet 102 , thereby preventing the airflow passing through the second fan 400 from being unable to be output within the first inner cavity, resulting in abnormal noises such as muffled sounds, rumbling sounds, and whistling sounds.

[0197] In some embodiments, the controller is configured to, when the air conditioner enters fresh air mode, control the first motor to drive the first air guide plate 230 to tilt at an angle of 5° to 8°. At this angle, the first air guide plate 230 partially opens the first air outlet 102, and the opened portion of the first air outlet 102 is sufficient to allow airflow to be output by the second fan 400, thereby preventing the airflow from being unable to be output from the first inner cavity, resulting in abnormal noise such as muffled sounds, gurgling sounds, or whistling sounds.

[0198] In some embodiments, the controller is configured to, when controlling the air conditioner to enter the fresh air mode, control the second motor to drive the second air guide plate 240 to tilt at an angle of 10° to 16°. At this angle, the second air guide plate 240 directs the airflow passing through the second fan 400 to the first air guide plate 230, ensuring that the airflow is directed by the first air guide plate 230 so that a sufficient amount of airflow can be directed to the top of the housing 100 to mix with the fresh air.

[0199] In some embodiments, the third preset number of steps is the same as the first preset number of steps described above, and the fourth preset number of steps is the same as the fourth preset number of steps described above.

[0200] In some embodiments, when the first air guide plate 230 flips, the flip angle of each step in the third preset number of steps is the flip angle of the first air guide plate 230 divided by the value of the third preset number of steps.

[0201] In some embodiments, the value of the third preset step is 3, and the flip angle of the first air guide plate 230 is 5°. Then, the flip angle of the first air guide plate 230 is 5° / 3 each time a preset step is run.

[0202] In some embodiments, the value of the third preset step is 5, and the flip angle of the first air guide plate 230 is 8°. Then, the flip angle of the first air guide plate 230 is 8° / 5 each time a preset step is run.

[0203] In some embodiments, when the second air guide plate 240 flips, the flip angle of each step in the fourth preset number of steps is the flip angle of the second air guide plate 240 divided by the value of the fourth preset number of steps.

[0204] In some embodiments, the value of the fourth preset step is 6, and the flip angle of the second air guide plate 240 is 10°. Then, the flip angle of the second air guide plate 240 is 10° / 6 each time a preset step is run.

[0205] In some embodiments, the value of the fourth preset step is 10, and the flip angle of the second air guide plate 240 is 16°. Then, the flip angle of the second air guide plate 240 is 16° / 10 each time a preset step is run.

[0206] In some embodiments, the controller is configured to: when controlling the air conditioner to enter the fresh air mode, control the first motor to rotate a third preset number of steps, and after a preset time, control the second motor to rotate a fourth preset number of steps.

[0207] In some embodiments, when the first motor is in the initial state, the first air outlet 102 is closed by the first air guide plate 230 .

[0208] In some embodiments, the wall-mounted air conditioner further includes an outdoor temperature sensor configured to detect outdoor temperature.

[0209] The controller is configured to, upon receiving a control signal to control the air conditioner to enter fresh air mode, control the outdoor temperature sensor to detect the outdoor temperature and determine whether the outdoor temperature is greater than a preset temperature value. If the outdoor temperature is greater than the preset temperature value, activate the drive motor 500, control the damper to open the second air inlet, control the first motor to rotate a third preset number of steps from an initial position, and control the second motor to rotate a fourth preset number of steps from an initial position.

[0210] As shown in Figures 17 to 32 , in some embodiments of the wall-mounted air conditioner disclosed herein, the wall-mounted air conditioner includes: a housing 100, an indoor heat exchanger, a second fan 400, a ventilation volute 700, a first fan 300, a first air deflector 230, a second air deflector 240, a controller, and a drive motor 500. The housing 100 has a first inner cavity and a second inner cavity defined along its length. The housing 100 has a first air inlet 101 defined at the top, and a first air outlet 102 defined at the front bottom.

[0211] The indoor heat exchanger is disposed within the first inner cavity, exchanging heat with the air passing through it to form a heat exchange airflow. A second fan 400 is disposed within the first inner cavity, below the indoor heat exchanger. The indoor airflow, driven by the second fan 400, enters the housing 100 through the first air inlet 101, exchanges heat in the indoor heat exchanger, and is then output to the indoor space through the first air outlet 102.

[0212] The ventilation volute 700 is disposed within the second inner cavity and is provided with a second air inlet and a second air outlet 720. The first fan 300 is disposed within the ventilation volute 700. The drive motor 500 drives the second fan 400 and the first fan 300 to rotate synchronously. The second air outlet 720 is located near the first air inlet 101.

[0213] The first air guide plate 230 is disposed at the first air outlet 102 , and the first air guide plate 230 is disposed along the length direction of the first air outlet 102 .

[0214] The second air guide plate 240 is disposed between the first air guide plate 230 and the indoor heat exchanger, and the second air guide plate 240 is disposed along the length direction of the first air outlet 102 .

[0215] The controller is configured to, upon receiving a control signal to control the air conditioner to enter the fresh air mode, control the first air guide plate 230 to flip from its initial position to a first preset angle, and control the second air guide plate 240 to flip from its initial position to a second preset angle. The first preset angle is greater than the second preset angle.

[0216] Part of the conditioned air output through the first air outlet 102 is guided to the top of the shell 100 by the second air guide plate 240, and the remaining conditioned air blows toward the first air guide plate 230 and is guided to the front of the shell 100 by the first air guide plate 230.

[0217] In some configurations, the drive motor drives the second fan to rotate synchronously with the first fan. Therefore, when the drive motor drives the first fan, the second fan also rotates. If the air deflector remains closed, the air duct will produce abnormal noises such as blockage, creaking, and whistling. If the first and second air deflectors are opened to their maximum angle, the airflow will blow directly toward the user, causing discomfort.

[0218] In the above-mentioned embodiment of the present disclosure, the tilt angle of the first air guide plate 230 is greater than the tilt angle of the second air guide plate 240. Therefore, a portion of the conditioned air, which has been output after heat exchange in the indoor heat exchanger, is output to the second air guide plate 240 and directed by the second air guide plate 240 to be directly output from the first air outlet 102. The remaining conditioned air passes through the gap between the second air guide plate 240 and the first air outlet 102 and is output to the first air guide plate 230 and directed by the first air guide plate 230 before being output. The conditioned air can be smoothly output through the first air outlet 102, and the second air guide plate 240 blocks part of the conditioned air to reduce the impact of the airflow on the first air guide plate 230. This reduces vibration of the first air guide plate 230, avoids noise generated by collision between the first air guide plate 230 and the housing 100, and improves the performance of the air conditioner.

[0219] In some embodiments, the control signal is sent by the user through a remote control or mobile phone software, or sent through the cloud.

[0220] In some embodiments, the wall-mounted air conditioner further comprises an outdoor unit, a compressor and an outdoor heat exchanger disposed within the outdoor unit. The compressor is configured to output refrigerant to the indoor heat exchanger and the outdoor heat exchanger to complete cooling or heating of the indoor heat exchanger, thereby realizing the heating mode or cooling mode of the air conditioner. In fresh air mode, the user only needs to input fresh air from outdoor into the room. In this mode, the compressor is in a stopped state, and at this time, there is no temperature change in the indoor heat exchanger. The controller is configured to: when the air conditioner is controlled to enter fresh air mode, control the drive motor 500 to drive the second fan 400 and the first fan 300 to rotate synchronously.

[0221] 25 to 31 , in some embodiments, the controller is configured to, when the air conditioner is controlled to enter fresh air mode, control the first air guide plate 230 to flip at an angle of 40° to 48°. In other words, the controller is configured to control the first air guide plate 230 to flip 24 to 28 steps, so that the flip angle of the first air guide plate 230 is 40° to 48°. This angle reduces the impact of the conditioned air on the second air guide plate 240, and the first air guide plate 230 directs the airflow directly in front of the housing 100. This reduces vibration of the first air guide plate 230 while preventing the airflow from blowing directly toward the user below the housing 100, thereby improving the performance of the air conditioner.

[0222] The controller is configured to, upon receiving a control signal to control the air conditioner to enter fresh air mode, control the second air guide plate 240 to flip at an angle of 10° to 16°. In other words, the controller is configured to control the second air guide plate 240 to flip 6 to 10 steps, so that the second air guide plate 240 flips at an angle of 10° to 16°. At this angle, the second air guide plate 240 directs the airflow passing through the second fan 400 to the first air guide plate 230, ensuring that the airflow is directed by the first air guide plate 230 toward the front of the housing 100, preventing the airflow from blowing directly toward the user, and improving the performance of the air conditioner.

[0223] 25 to 31 , in some embodiments, the controller is configured to, when controlling the air conditioner to enter the fresh air mode, control the first air guide plate 230 to flip by a first preset number of steps, and control the second air guide plate 240 to flip by a second preset number of steps. The first preset number of steps is greater than the second preset number of steps.

[0224] In some embodiments, the first preset number of steps is 24 to 28, and the second preset number of steps is 6 to 10. That is, upon receiving a control signal to control the air conditioner to enter fresh air mode, the controller is configured to control the first air guide plate 230 to flip 24 to 28 steps to tilt the first air guide plate 230 to a first preset angle, and to control the second air guide plate 240 to flip 6 to 10 steps to tilt the second air guide plate 240 to a second preset angle. This preset number of steps reduces the impact of conditioned air on the second air guide plate 240, and the first air guide plate 230 directs the airflow directly in front of the housing 100. This reduces vibration of the first air guide plate 230 while preventing the airflow from blowing directly toward the user below the housing 100, thereby improving the performance of the air conditioner.

[0225] In some embodiments, when the first air guide plate 230 flips, the flip angle of each step in the first preset number of steps is the value of the first preset angle divided by the first preset number of steps.

[0226] In some embodiments, the value of the first preset step is 24, and the first preset angle is 40°. Then, the flip angle of the first air guide plate 230 is 40° / 24 each time a preset step is run.

[0227] In some embodiments, the value of the first preset step is 28, and the first preset angle is 48°. Then, the flip angle of the first air guide plate 230 is 48° / 28 each time a preset step is run.

[0228] In some embodiments, when the second air guide plate 240 flips, the flip angle of each step in the second preset number of steps is the value of the second preset angle divided by the second preset number of steps.

[0229] In some embodiments, the value of the second preset step is 6, and the second preset angle is 10°. Then, the flip angle of the second air guide plate 240 is 10° / 6 each time a preset step is run.

[0230] In some embodiments, the value of the second preset step is 10, and the second preset angle is 16°. Then, the flip angle of the second air guide plate 240 is 16° / 10 each time a preset step is run.

[0231] Referring to Figures 25 to 31 , in some embodiments, the controller is configured to, upon receiving a control signal to control the air conditioner to enter fresh air mode, control the first air deflector 230 to flip to a first preset angle, and after a preset time has elapsed, control the second air deflector 240 to flip to a second preset angle. For example, after controlling the first air deflector 230 to flip to the first preset angle, a timer begins, and the controller determines whether the preset time has elapsed. If so, the controller controls the second air deflector 240 to flip to the second preset angle. In this way, the flipping of the first air deflector 230 and the second air deflector 240 can be sequentially timed, so that when air is output, it is first directed by the first air deflector 230 before being output to the second air deflector 240. This prevents the airflow from being directly directed to the second air deflector 240 without being directed by the first air deflector 230, resulting in excessive instantaneous blowing force on the second air deflector 240, causing it to collide with the housing 100 and produce an abnormal sound.

[0232] In some embodiments, the preset time is set by the user, factory set, or sent from the cloud.

[0233] In some embodiments, the controller is configured to: when receiving a control signal to control the air conditioner to enter the fresh air mode, control the first air guide plate 230 to flip to a first preset angle and control the second air guide plate 240 to flip to a second preset angle.

[0234] In some embodiments, a baffle is provided at the second air inlet to seal the second air inlet. A display screen is provided on the front panel of the housing 100, and the display screen is configured to display information such as temperature or time. The controller is configured to turn on the display screen when the air conditioner is controlled to enter fresh air mode.

[0235] In some embodiments, entering the fresh air mode occurs when the air conditioner is in an off state. The controller is configured to, when controlling the air conditioner to enter the fresh air mode, turn on the drive motor 500, control the baffle to open the second air inlet, control the first air guide plate 230 to rotate to a first preset angle, and control the second air guide plate 240 to rotate to a second preset angle.

[0236] In some embodiments, when the first air guide plate 230 is in the initial position, the first air guide plate 230 completely blocks the first air outlet 102, and the tilt angle of the first air guide plate 230 is 0°. When the air conditioner enters the fresh air mode, the first air guide plate 230 completely blocks the first air outlet 102 and tilts to a first preset angle to open the first air outlet 102.

[0237] When the second air guide plate 240 is in the initial position, the turning angle of the second air guide plate 240 is 0°. When the air conditioner enters the fresh air mode, the second air guide plate 240 starts to turn over to a second preset angle from the initial position.

[0238] After the air conditioner enters the fresh air mode, the first air guide plate 230 is tilted at an angle of 40° to 48°. This angle refers to the tilt angle of the first air guide plate 230 from the time the first air outlet 102 is completely closed until the first air guide plate 230 is completely tilted.

[0239] After the air conditioner enters the fresh air mode, the second air guide plate 240 is tilted at an angle of 10° to 16°. This angle refers to the tilt angle of the second air guide plate 240 from the time it completely closes the first air outlet 102 to the time it is completely tilted.

[0240] In some embodiments, the controller is configured to: when controlling the air conditioner to exit the fresh air mode, turn off the drive motor 500, control the second air guide plate 240 and the first air guide plate 230 to flip to the initial position; and control the baffle to close the second air inlet.

[0241] Referring to Figures 25 to 31 , in some embodiments, the wall-mounted air conditioner further includes an outdoor temperature sensor configured to detect the outdoor temperature. In some embodiments, the controller is configured to: after controlling the air conditioner to enter fresh air mode, control the outdoor temperature sensor to detect the outdoor temperature and determine whether the outdoor temperature is greater than a preset temperature value; when the outdoor temperature is greater than the preset temperature value, activate the drive motor 500, control the baffle to open the second air inlet, control the first air guide plate 230 to rotate to a first preset angle, and control the second air guide plate 240 to rotate to a second preset angle. This prevents the introduction of outdoor fresh air into the room when the temperature is too low, which would cause the indoor temperature to be too low and affect the performance of the air conditioner, thereby reducing the significant impact of the outdoor fresh air on the indoor temperature and improving the performance of the air conditioner.

[0242] If the outdoor temperature is lower than the preset temperature value, no action will be taken. The outdoor temperature sensor will be controlled to detect the outdoor temperature again after the preset interval.

[0243] In some embodiments, the preset temperature value and the preset interval time are set by the user, factory set, or sent from the cloud.

[0244] In some embodiments, the preset temperature value is -15°C, and the preset interval time is 1 hour.

[0245] In some embodiments, the drive motor 500 has a single output shaft, with both ends of the output shaft coaxially connected to the first fan 300 and the second fan 400. When the drive motor 500 rotates, the output shaft drives the second fan 400 and the first fan 300 to rotate simultaneously.

[0246] In some embodiments, the drive motor 500 has two output shafts, namely a first output shaft and a second output shaft. The first output shaft is coaxially connected to the second fan 400, and the second output shaft is coaxially connected to the first fan 300. When the drive motor 500 is running, the first output shaft and the second output shaft rotate synchronously.

[0247] In some embodiments, the output shaft of the drive motor 500 is connected to the first fan 300. The first fan 300 is provided with a transmission assembly, which is connected to the second fan 400. The drive motor 500 drives the first fan 300 to rotate, and the first fan 300 drives the second fan 400 to rotate synchronously via the transmission assembly, thereby achieving a single drive motor 500 driving the first fan 300 and the second fan 400 to rotate synchronously.

[0248] 17 to 24 , in some embodiments, the output shaft of the drive motor 500 is connected to the second fan 400. The second fan 400 is provided with a transmission assembly, which is connected to the first fan 300. The drive motor 500 drives the second fan 400 to rotate, and the second fan 400 drives the first fan 300 to rotate synchronously via the transmission assembly, thereby achieving a single drive motor 500 driving the first fan 300 and the second fan 400 to rotate synchronously.

[0249] In some embodiments, the output shaft of the driving motor 500 is connected to the second fan 400 . The second fan 400 is provided with a connecting shaft at one end facing the first fan 300 . The connecting shaft passes through the ventilation volute 700 and is connected to the first fan 300 .

[0250] In some embodiments, the area of ​​the first air guide plate 230 is larger than the area of ​​the second air guide plate 240. The length directions of the first air guide plate 230 and the second air guide plate 240 are both the same as the length direction of the housing 100, and the width of the first air guide plate 230 is larger than the width of the second air guide plate 240.

[0251] 17 to 24 and 32 , some embodiments of the present disclosure further provide a wall-mounted air conditioner comprising: a housing 100, an indoor heat exchanger, a second fan 400, a ventilation volute 700, a first fan 300, a first air guide plate 230, a first motor, a second air guide plate 240, a second motor, a controller, and a drive motor 500. The housing 100 has a first inner cavity and a second inner cavity defined along its length. The housing 100 has a first air inlet 101 defined at the top, and a first air outlet 102 defined at the front bottom.

[0252] The indoor heat exchanger is disposed within the first inner cavity, exchanging heat with the air passing through it to form a heat exchange airflow. A second fan 400 is disposed within the first inner cavity, below the indoor heat exchanger. The indoor airflow, driven by the second fan 400, enters the housing 100 through the first air inlet 101, exchanges heat in the indoor heat exchanger, and is then output to the indoor space through the first air outlet 102.

[0253] The ventilation volute 700 is disposed within the second inner cavity and is provided with a second air inlet and a second air outlet 720. The second air outlet 720 is located adjacent to the first air inlet 101. The first fan 300 is disposed within the ventilation volute 700. The drive motor 500 drives the second fan 400 and the first fan 300 to rotate synchronously.

[0254] A first air deflector 230 is disposed at the first air outlet 102. A first motor is disposed at the first air outlet 102 and is configured to drive the first air deflector 230 to rotate. A second air deflector 240 is disposed between the first air deflector 230 and the first air outlet 102. A second motor is disposed at the first air outlet 102 and is configured to drive the second air deflector 240 to rotate.

[0255] The controller is configured to: when controlling the air conditioner to enter the fresh air mode, control the first motor to rotate by a third preset number of steps, and control the second motor to rotate by a fourth preset number of steps. The third preset number of steps is greater than the fourth preset number of steps.

[0256] Through the above solution, by setting the number of twisting steps of the first motor and the second motor, the number of flipping steps of the first air guide plate 230 can be made greater than the number of flipping steps of the second air guide plate 240, so that the opening of the first air guide plate 230 is larger. The first air guide plate 230 and the second air guide plate 240 have less obstruction to the first air outlet 102. Therefore, the airflow output after heat exchange in the indoor heat exchanger can be smoothly output through the first air outlet 102, reducing the impact pressure of the airflow on the first air guide plate 230 and the second air guide plate 240, avoiding vibration of the first air guide plate 230 and the second air guide plate 240, and further avoiding collision between the first air guide plate 230 and the second air guide plate 240 and the housing 100, thereby preventing noise and improving the performance of the air conditioner.

[0257] In some embodiments, the third preset number of steps is 24 to 28, and the fourth preset number of steps is 6 to 10. This preset number of steps reduces the impact of the conditioned air on the second air guide plate 240, and the first air guide plate 230 directs the airflow directly in front of the housing 100. This reduces vibration of the first air guide plate 230 while preventing the airflow from directly blowing toward the user below the housing 100, thereby improving the performance of the air conditioner.

[0258] In some embodiments, the controller is configured to control the first motor to tilt the first air guide plate 230 to a tilt angle of 40° to 48° when the air conditioner enters fresh air mode. This angle reduces the impact of conditioned air on the second air guide plate 240, and the first air guide plate 230 directs the airflow directly in front of the housing 100. This reduces vibration of the first air guide plate 230 while preventing the airflow from directly blowing towards users below the housing 100, thereby improving the performance of the air conditioner.

[0259] In some embodiments, the controller is configured to, upon receiving a control signal to control the air conditioner to enter fresh air mode, control the second motor to drive the second air guide plate 240 to tilt at an angle of 10° to 16°. At this angle, the second air guide plate 240 directs the airflow passing through the second fan 400 to the first air guide plate 230, ensuring that the airflow is directed by the first air guide plate 230 toward the front of the housing 100, preventing the airflow from blowing directly toward the user, thereby improving the performance of the air conditioner.

[0260] In some embodiments, the third preset number of steps is the same as the first preset number of steps described above, and the fourth preset number of steps is the same as the second preset number of steps described above.

[0261] In some embodiments, the controller is configured to, upon receiving a control signal to control the air conditioner to enter fresh air mode, control the first motor to rotate a third preset number of steps, and after a preset time has elapsed, control the second motor to rotate a fourth preset number of steps. For example, after controlling the first motor to rotate the third preset number of steps, a timer is started, and the controller determines whether the preset time has been reached. If the preset time has been reached, the controller controls the second motor to rotate the fourth preset number of steps.

[0262] As shown in Figures 33 to 48 , in some embodiments of the wall-mounted air conditioner disclosed herein, the wall-mounted air conditioner includes: a housing 100, an indoor heat exchanger, a second fan 400, a ventilation volute 700, a baffle 250, a first fan 300, a controller, and a drive motor 500. The housing 100 has a first inner cavity and a second inner cavity defined along its length. The top of the housing 100 defines a first air inlet 101, and the bottom of the front of the housing 100 defines a first air outlet 102.

[0263] The indoor heat exchanger is disposed within the first inner cavity, exchanging heat with the air passing through it to form a heat exchange airflow. A second fan 400 is disposed within the first inner cavity, below the indoor heat exchanger. The indoor airflow, driven by the second fan 400, enters the housing 100 through the first air inlet 101, exchanges heat in the indoor heat exchanger, and is then output to the indoor space through the first air outlet 102.

[0264] The ventilation volute 700 is disposed within the second inner cavity and is provided with a second air inlet and a second air outlet 720. A baffle 250 is disposed at the second air inlet and is configured to open or close the second air inlet. The first fan 300 is disposed within the ventilation volute 700. A drive motor 500 drives the second fan 400 and the first fan 300 to rotate synchronously.

[0265] The controller is configured to: when receiving a control signal to control the air conditioner to exit the fresh air mode, control the drive motor 500 to decelerate and stop, and after the drive motor 500 completely stops, control the baffle 250 to close the second air inlet.

[0266] In some embodiments, a single drive motor 500 simultaneously drives the second fan 400 and the first fan 300. When the fresh air function is turned off, the baffle 250 blocks the second air inlet, but the first fan 300 continues to rotate. Airflow within the ventilating volute 700 can only be output from the second air outlet 720 but cannot be input from the second air inlet. This causes the air pressure within the ventilating volute 700 to decrease, resulting in airflow congestion and noise, which affects the performance of the air conditioner.

[0267] The present invention adopts the above-mentioned scheme. When receiving a control signal to control the air conditioner to exit the fresh air mode, it ensures that the driving motor 500 is completely stopped before closing the second air inlet, so as to ensure that the first fan 300 does not drive the air flow in the ventilation volute 700 before the second air inlet is closed, thereby ensuring the pressure balance inside and outside the ventilation volute 700, so as to avoid the air flow being unable to circulate in the ventilation volute 700 and causing a muffled sound.

[0268] 44 and 48 , in some embodiments, the controller is configured to, when the air conditioner is controlled to exit the fresh air mode, control the drive motor 500 to decelerate and stop, determine whether the drive motor 500 has completely stopped, and if so, control the baffle 250 to close the second air inlet; if not, re-determine or wait for a period of time before re-determining. This ensures that the baffle 250 will not close the second air inlet until the drive motor 500 has completely stopped.

[0269] In some embodiments, the sending of control signals includes but is not limited to sending from a remote control, program control, and sending from the cloud.

[0270] In some embodiments, the wall-mounted air conditioner further includes an outdoor unit, a compressor disposed within the outdoor unit, and an outdoor heat exchanger. The compressor is configured to output refrigerant to the indoor heat exchanger and the outdoor heat exchanger to complete cooling or heating of the indoor heat exchanger, thereby realizing the heating mode or cooling mode of the air conditioner. In fresh air mode, the user only needs to input outdoor fresh air into the room. In fresh air mode, the compressor is in a stopped state, and at this time, there is no temperature change in the indoor heat exchanger. The controller is configured to: when the air conditioner is controlled to enter fresh air mode, control the drive motor 500 to drive the second fan 400 and the first fan 300 to rotate synchronously.

[0271] 43 to 44 and 48 , in some embodiments, a third motor is provided on the ventilation volute 700, and the third motor is configured to drive the baffle 250 to open or close the second air inlet. The controller is configured to: when receiving a control signal to control the air conditioner to exit the fresh air mode, control the drive motor 500 to decelerate and stop, wait for the drive motor 500 to completely stop, and then control the third motor to rotate so that the baffle 250 closes the second air inlet. When the air conditioner exits the fresh air mode, ensuring that the drive motor 500 completely stops before closing the second air inlet can ensure that the first fan 300 does not drive the air flow in the ventilation volute 700 before the second air inlet is closed, thereby ensuring that the pressure inside and outside the ventilation volute 700 is balanced, so as to avoid the air flow being unable to circulate in the ventilation volute 700 and causing a muffled sound.

[0272] In some embodiments, when the air conditioner exits the fresh air mode, the controller controls the drive motor 500 to slow down and stop, and determines whether the drive motor 500 has completely stopped. If so, the third motor is controlled to rotate so that the baffle 250 closes the second air inlet; if not, the judgment is made again or it is made again after waiting for a period of time.

[0273] Referring to Figures 38 to 40 , in some embodiments, a baffle 250 slides at the second air inlet of the ventilation volute 700. A rack is provided on the baffle 250, and a gear 260 is coaxially connected to the output shaft of the third motor. Gear 260 meshes with the rack. Rotation of the output shaft of the third motor drives gear 260, which in turn meshes with the rack and drives the baffle 250 to slide, thereby opening or closing the second air inlet.

[0274] 45 and 46 , in some embodiments, the controller is configured to, when the air conditioner is controlled to enter fresh air mode, control the third motor to rotate so that the baffle 250 opens the second air inlet, and then activate the drive motor 500 after the baffle 250 opens the second air inlet. When the air conditioner enters fresh air mode, ensuring that the second air inlet is open before the drive motor 500 drives the first fan 300 to rotate, ensures that air can smoothly enter the ventilation volute 700 through the second air inlet and be output through the second air outlet 720, thereby ensuring pressure balance inside and outside the ventilation volute 700, avoiding airflow blockage and noise generation.

[0275] 33, 36, and 37, in some embodiments, a first air guide plate 230 and a second air guide plate 240 are provided at the first air outlet 102; the second air guide plate 240 is provided between the first air guide plate 230 and the first air outlet 102. The first air guide plate 230 and the second air guide plate 240 can adjust the direction of the conditioned air output through the first air outlet 102.

[0276] In some embodiments, a first motor and a second motor are further provided at the first air outlet 102 . The first motor is configured to drive the first air guide plate 230 to flip, and the second motor is configured to drive the second air guide plate 240 to flip.

[0277] 45 and 46 , in some embodiments, the controller is configured to, when the air conditioner is controlled to enter fresh air mode, control the first air guide plate 230 to flip to a first preset position and then control the second air guide plate 240 to flip to a second preset position. When the air conditioner enters fresh air mode, the first air outlet 102 is immediately opened, and when the second fan 400 rotates, air can smoothly enter the first air inlet 101 and exit the first air outlet 102, ensuring smooth airflow.

[0278] In some embodiments, the controller is configured to, when the air conditioner enters fresh air mode, control the damper 250 to open the second air inlet, and then start the drive motor 500 after the damper 250 opens the second air inlet. This ensures that the first fan 300 does not rotate until the second air inlet is opened, ensuring that air can smoothly enter through the second air inlet and exit through the second air outlet 720, thereby preventing blockage of the fresh air flow and reducing noise.

[0279] In some embodiments, when the air conditioner enters the fresh air mode, the controller controls the first air guide plate 230 to flip to the first preset position and controls the baffle 250 to open the second air inlet; determines whether the first air guide plate 230 flips to the first preset position; if so, starts the drive motor 500 while controlling the second air guide plate 240 to flip to the second preset position; if not, re-judges or waits for a period of time before re-judging.

[0280] In some embodiments, the wall-mounted air conditioner further includes an outdoor temperature sensor configured to detect the outdoor temperature. In some embodiments, the controller is configured to, after controlling the air conditioner to enter fresh air mode, control the outdoor temperature sensor to detect the outdoor temperature, determine whether the outdoor temperature is greater than a preset temperature value, and activate the drive motor 500 when the outdoor temperature is greater than the preset temperature value. This prevents the introduction of outdoor fresh air into the room when the temperature is too low, thereby preventing the indoor temperature from being too low and affecting the performance of the air conditioner. This reduces the significant impact of the outdoor fresh air on the indoor temperature and improves the performance of the air conditioner.

[0281] If the outdoor temperature is lower than the preset temperature value, no action will be taken. The outdoor temperature sensor will be controlled to detect the outdoor temperature again after the preset interval.

[0282] In some embodiments, the preset temperature value and the preset interval time are set by the user, factory set, or sent from the cloud.

[0283] In some embodiments, the preset temperature value is -15°C, and the preset interval time is 1 hour.

[0284] In some embodiments, the front panel of the housing 100 is provided with a display screen configured to display information such as temperature or time. The controller is configured to: turn on the display screen when the air conditioner enters the fresh air mode; and turn off the display screen when the air conditioner exits the fresh air mode.

[0285] In some embodiments, the controller is configured to: after controlling the air conditioner to enter the fresh air mode, control the outdoor temperature sensor to detect the outdoor temperature, and determine whether the outdoor temperature is greater than the preset temperature value. When the outdoor temperature is greater than the preset temperature value, control the third motor to rotate so that the baffle 250 opens the second air inlet, and at the same time control the first motor to drive the first air guide plate 230 to flip to the first preset position; after waiting for the first air guide plate 230 to flip to the first preset position, start the coaxial motor and simultaneously control the second motor to drive the second air guide plate 240 to flip to the second preset position.

[0286] The first and second preset positions are user-configured, factory-set, or cloud-delivered. Because the second fan 400 and the first fan 300 rotate synchronously via a single drive motor 500, the second fan 400 will rotate when the air conditioner enters fresh air mode. This solution ensures that the coaxial motor is activated only after the first air guide plate 230 opens the first air outlet 102 and the second air inlet is opened, allowing conditioned air to be smoothly discharged through the first air outlet 102 and fresh outdoor air to flow smoothly through the second air inlet, preventing airflow obstruction.

[0287] In some embodiments, the controller is configured to exit the fresh air mode when a signal to exit the fresh air mode is received, or when it is determined that the outdoor temperature is less than a preset temperature value.

[0288] In some embodiments, the signal to exit the fresh air mode can be preset by the user, issued by the user, or sent from the cloud.

[0289] Referring to Figures 47 and 48 , in some embodiments, the controller is configured to: when exiting the fresh air mode, control the drive motor 500 to decelerate and stop while simultaneously controlling the second air guide plate 240 to flip to its initial position. After the drive motor 500 has completely stopped, the controller controls the third motor to rotate so that the baffle 250 closes the second air inlet. After the second air guide plate 240 has flipped to its initial position, the controller controls the first air guide plate 230 to flip to close the first air outlet 102. The first fan 300 and the second fan 400 rotate synchronously, so that air also flows out of the first air outlet 102. When the air conditioner exits the fresh air mode, the second air guide plate 240 is first flipped to its initial position, and then the first air guide plate 230 closes the first air outlet 102. This prevents the first air outlet 102 from being blocked before the second fan 400 has completely stopped, thereby preventing noise caused by airflow failure within the housing 100.

[0290] In some embodiments, the controller is configured to: when receiving a control signal to control the air conditioner to exit the fresh air mode, control the drive motor 500 to slow down and stop and simultaneously control the second air guide plate 240 to flip to the initial position; determine whether the drive motor 500 is completely stopped, and if so, control the third motor to rotate so that the baffle 250 closes the second air inlet; if not, re-judge or wait for a period of time before re-judging; determine whether the second air guide plate 240 is flipped to the initial position, and if so, control the first air guide plate 230 to flip to close the first air outlet 102; if not, re-judge or wait for a period of time before re-judging.

[0291] In some embodiments, the angle of the initial position of the second air guide plate 240 is preset at the factory.

[0292] In some embodiments, the first preset position of the first air deflector 230 and the second preset position of the second air deflector 240 are factory-set or cloud-delivered. When the first air deflector 230 is in the first preset position, airflow from the first air outlet 102 can be smoothly output without causing blockage within the housing 100.

[0293] In some embodiments, the drive motor 500 has a single output shaft, with both ends of the output shaft coaxially connected to the first fan 300 and the second fan 400. When the drive motor 500 rotates, the output shaft drives the second fan 400 and the first fan 300 to rotate simultaneously.

[0294] In some embodiments, the drive motor 500 has two output shafts, namely a first output shaft and a second output shaft. The first output shaft is coaxially connected to the second fan 400, and the second output shaft is coaxially connected to the first fan 300. When the drive motor 500 is running, the first output shaft and the second output shaft rotate synchronously.

[0295] In some embodiments, the output shaft of the drive motor 500 is connected to the first fan 300. The first fan 300 is provided with a transmission assembly, which is connected to the second fan 400. The drive motor 500 drives the first fan 300 to rotate, and the first fan 300 drives the second fan 400 to rotate synchronously via the transmission assembly, thereby achieving a single drive motor 500 driving the first fan 300 and the second fan 400 to rotate synchronously.

[0296] In some embodiments, the output shaft of the drive motor 500 is connected to the second fan 400. The second fan 400 is provided with a transmission assembly, which is connected to the first fan 300. The drive motor 500 drives the second fan 400 to rotate, and the second fan 400 drives the first fan 300 to rotate synchronously via the transmission assembly, thereby achieving a single drive motor 500 driving the first fan 300 and the second fan 400 to rotate synchronously.

[0297] In some embodiments, the output shaft of the driving motor 500 is connected to the second fan 400 . The second fan 400 is provided with a connecting shaft at one end facing the first fan 300 . The connecting shaft passes through the ventilation volute 700 and is connected to the first fan 300 .

[0298] In some embodiments, the area of ​​the first air guide plate 230 is larger than the area of ​​the second air guide plate 240. The length directions of the first air guide plate 230 and the second air guide plate 240 are both the same as the length direction of the housing 100, and the width of the first air guide plate 230 is larger than the width of the second air guide plate 240.

[0299] In some embodiments, the ventilation volute 700 includes a first split housing 730 and a second split housing 740, with a first fresh air cavity formed between the first split housing 730 and the second split housing 740. The first fan 300 is disposed within the first fresh air cavity, and the second air outlet 720 is connected to the first fresh air cavity. When the drive motor 500 drives the first fan 300 to rotate, the first fan 300 outputs outdoor fresh air into the room through the second air outlet 720.

[0300] In some embodiments, the second split housing 740 includes a first half housing 741 and a second half housing 742. The second half housing 742 is located between the first half housing 741 and the first split housing 730 to form a second fresh air cavity, which is connected to the first fresh air cavity. The second air inlet is connected to the second fresh air cavity. When the drive motor 500 drives the first fan 300 to rotate, outdoor fresh air enters the second fresh air cavity through the second air inlet and then enters the first fresh air cavity. Under the action of the first fan 300, the outdoor fresh air is output to the indoor through the second air outlet 720.

[0301] In addition, some embodiments of the present disclosure further provide a wall-mounted air conditioner, comprising: a housing 100, an indoor heat exchanger, a second fan 400, a ventilation volute 700, a baffle 250, a first fan 300, a controller, and a drive motor 500. The housing 100 has a first inner cavity and a second inner cavity defined along its length. The housing 100 has a first air inlet 101 defined at the top, and a first air outlet 102 defined at the front bottom.

[0302] The indoor heat exchanger is disposed within the first inner cavity, exchanging heat with the air passing through it to form a heat exchange airflow. A second fan 400 is disposed within the first inner cavity, below the indoor heat exchanger. The indoor airflow, driven by the second fan 400, enters the housing 100 through the first air inlet 101, exchanges heat in the indoor heat exchanger, and is then output to the indoor space through the first air outlet 102.

[0303] The ventilation volute 700 is disposed within the second inner cavity and is provided with a second air inlet and a second air outlet 720. A baffle 250 is disposed at the second air inlet and is configured to open or close the second air inlet. The first fan 300 is disposed within the ventilation volute 700. A drive motor 500 drives the second fan 400 and the first fan 300 to rotate synchronously. The second air outlet 720 is located adjacent to the first air inlet 101.

[0304] The controller is configured to: when receiving a control signal to control the air conditioner to exit the fresh air mode, control the drive motor 500 to slow down and stop, and when the speed of the drive motor 500 is lower than a preset speed, control the baffle 250 to close the second air inlet.

[0305] Through the above solution, when the air conditioner exits the fresh air mode, it is ensured that the first fan 300 is reduced to a certain speed before the second air inlet is closed, and that the fresh air flow in the ventilation volute 700 is small enough when the second air inlet is closed, so as to avoid the air flow being unable to circulate in the ventilation volute 700 and causing a muffled sound.

[0306] In some embodiments, a third motor is provided on the ventilation volute 700, and the third motor is configured to drive the baffle 250 to open or close the second air inlet. The controller is configured to: when the air conditioner is controlled to exit the fresh air mode, control the drive motor 500 to decelerate and stop, wait for the speed of the drive motor 500 to be lower than the preset speed, and then control the third motor to rotate so that the baffle 250 closes the second air inlet. When the air conditioner exits the fresh air mode, ensure that the first fan 300 is reduced to a certain speed before the second air inlet is closed, and ensure that the fresh air flow in the ventilation volute 700 is sufficiently small when the second air inlet is closed, so as to avoid the air flow being unable to circulate in the ventilation volute 700 and causing a muffled sound.

[0307] In some embodiments, a first air guide plate 230 and a second air guide plate 240 are provided at the first air outlet 102. The second air guide plate 240 is provided between the first air guide plate 230 and the first air outlet 102. The controller is configured to: when controlling the air conditioner to exit the fresh air mode, control the drive motor 500 to decelerate and stop while simultaneously controlling the second air guide plate 240 to flip to its initial position; after the drive motor 500 completely stops, control the third motor to rotate so that the baffle 250 closes the second air inlet; and when the speed of the drive motor 500 drops below a preset speed, control the first air guide plate 230 to flip to close the first air outlet 102. The first fan 300 and the second fan 400 rotate synchronously, so that air also flows out of the first air outlet 102. When the air conditioner exits the fresh air mode, the second air guide plate 240 is first flipped to its initial position, and then the first air guide plate 230 is controlled to close the first air outlet 102. In this way, it is possible to avoid the first air outlet 102 being closed when the second fan 400 is not completely stopped, thereby preventing the air flow in the housing 100 from being unable to be output and causing noise.

[0308] In some embodiments, the preset speed is preset by the user, sent by the user, or sent from the cloud. At the preset speed, the fresh air flow driven by the first fan 300 will not generate a stuffy noise in the ventilation volute 700 where the second air inlet is closed.

[0309] Figures 49 to 76 are some embodiments of the air-conditioning indoor unit disclosed in the present invention. In these embodiments, the air-conditioning indoor unit includes a casing 1, a heat exchanger, a fresh air module, a second fan 4, a drive motor 5, a bearing 7 and a bearing seat 8.

[0310] In the aforementioned air conditioning indoor unit, as shown in FIG49 , the housing 1 forms the overall appearance of the indoor unit. The housing 1 has a top and a bottom. The top and bottom of the housing 1 are opposite ends, and the height of the housing 1 extends from the top to the bottom. The left side of the housing 1 and the right side of the housing 1 are opposite ends, and the length of the housing 1 extends from the left to the right. The front side of the housing 1 and the rear side of the housing 1 are opposite ends, and the thickness of the housing 1 extends from the front to the rear. In this embodiment, the indoor unit is a wall-mounted unit, with the rear side of the housing 1 facing a wall. A heat exchange duct is defined within the housing 1. The housing 1 is provided with an air inlet 11 and an air outlet 15. The air inlet 11 and the air outlet 15 are each connected to the heat exchange duct. The air inlet 11 is located at the top of the housing 1 and is provided with a second grille to prevent debris from entering the interior of the housing 1. The housing air outlet 15 is located on the lower front side of the housing 1. An air deflector 2 is provided at the housing air outlet 15. The air deflector 2 is connected to the housing 1 in an openable and closable manner to open or close the housing air outlet 15. It should be noted that the housing 1 also has a vent 12 to allow outdoor fresh air to flow into the room through the vent 12. In some embodiments, the vent 12 is located to the left of the housing air inlet 11 and is opened upward, so that the outdoor fresh air flows upward into the room, thereby preventing the outdoor fresh air from mixing with the conditioned air.

[0311] In some embodiments, as shown in Figures 52 and 54 , the housing 1 is provided with a first mounting cavity 14, a second mounting cavity 13, and a third mounting cavity 16. The first mounting cavity 14, the second mounting cavity 13, and the third mounting cavity 16 are sequentially distributed along the length of the housing 1. The first mounting cavity 14 is used to mount the second fan 4; the second mounting cavity 13 is used to mount the drive motor 5; and the third mounting cavity 16 is used to mount the fresh air module.

[0312] In other embodiments, the second mounting cavity 13 is located to the right of the first mounting cavity 14; the third mounting cavity 16 is located to the right of the second mounting cavity 13. The first mounting cavity 14 is provided with a first mounting portion 17 and a second mounting portion 18 at either end along the length of the housing 1, and the first mounting cavity 14 and the second mounting cavity 13 are separated from each other by the first mounting portion 17. The second mounting cavity 13 and the third mounting cavity 16 are interconnected. It should be noted that the first mounting cavity 14, the second mounting cavity 13, and the third mounting cavity 16 are arranged sequentially from left to right along the length of the housing 1.

[0313] In the aforementioned air conditioner indoor unit, the heat exchanger is used to heat the indoor air inside the housing 1 to generate conditioned air; the heat exchanger is installed in the heat exchange air duct. It should be noted that the heat exchanger is located near the housing air inlet 11. It should also be noted that the conditioned air can be cold air, hot air, or even room temperature air.

[0314] In the above-mentioned air conditioner indoor unit, as shown in Figures 54 to 56, the drive motor 5 is configured to drive the first fan 10 and the second fan 4 to rotate. The drive motor 5 is installed in the second installation cavity 13; the drive motor 5 is connected to a first connecting shaft and a second connecting shaft. The drive motor 5 is connected to the second fan 4 via the first connecting shaft, and the drive motor 5 is connected to the first fan 10 via the second connecting shaft, so that the drive motor 5 can drive the first fan 10 and the second fan 4 to rotate synchronously. It should be noted that in this embodiment, the drive motor 5 is a dual-shaft motor, and the drive motor 5 has a first motor shaft 51 and a second motor shaft 52. The first motor shaft 51 is connected to the second fan 4, and the second motor shaft 52 is connected to the first fan 10, so as to drive the first fan 10 and the second fan 4 to rotate synchronously. It should also be noted that the first connecting shaft includes the first motor shaft 51, and the second connecting shaft includes the second motor shaft 52.

[0315] In the aforementioned air conditioner indoor unit, as shown in Figures 50 and 51 , the second fan 4 is configured to draw indoor air into the housing 1. After heat exchange in the heat exchanger to form conditioned air, the conditioned air is then directed into the indoor space through the housing air outlet 15 to meet the user's cooling or heating needs. The second fan 4 is mounted in the first mounting cavity 14 and is located on the side of the heat exchanger facing away from the housing air inlet 11. A support shaft 41 is provided at the end of the second fan 4 facing away from the drive motor 5. This support shaft 41 is connected to a bearing 7 to support the rotation of the second fan 4. It should be noted that the second fan 4 is a crossflow fan.

[0316] In some embodiments, the second fan 4 extends along the length direction of the casing 1, and a fan sleeve 42 is provided at one end of the second fan 4 connected to the drive motor 5. The fan sleeve 42 is provided with a connecting hole, and the rotating shaft of the drive motor 5 extends into the connecting hole to connect the drive motor 5 to the second fan 4.

[0317] In the aforementioned air conditioning indoor unit, as shown in Figures 50 and 51 , the fresh air module is configured to draw outdoor fresh air into the indoor space. The fresh air module includes a ventilation volute 3 and a first fan 10. The ventilation volute 3 is mounted within the third mounting cavity 16. A fresh air duct is defined within the ventilation volute 3. The first fan 10 is mounted within the fresh air duct. The fresh air duct is provided with a second air inlet 37 and a second air outlet 351. The second air inlet 37 communicates with the outdoors, while the second air outlet 351 communicates with the vent 12. As the first fan 10 operates, outdoor fresh air is drawn into the fresh air duct through a pipeline via the second air inlet 37, passes through the second air outlet 351, and flows into the indoor space through the vent 12. The first fan 10 is provided with a fan shaft 106. The fan shaft 106 is connected to the second motor shaft 52 via a coupling 6 to form a second connecting shaft. It should be noted that the fresh air duct is provided with a reserved hole 312 so that the fan shaft 106 passes through the reserved hole 312 and is arranged outside the fresh air duct and connected to the second motor shaft 52, thereby connecting the first fan 10 to the drive motor 5.

[0318] For example, as shown in Figures 57 to 59 , the ventilation volute 3 includes a first volute 31, a second volute 32, and a ventilation housing 33. The first volute 31 and the second volute 32 are disposed opposite each other and together form a fresh air chamber 321. The first fan 10 is installed in the fresh air chamber 321. The ventilation housing 33 and the second volute 32 are disposed opposite each other on a side facing away from the first volute 31 to together form a purification chamber 331. The second volute 32 is provided with a first grille 322 located at the junction of the purification chamber 331 and the fresh air chamber 321, thereby connecting the purification chamber 331 with the fresh air chamber 321. A purification module 34 is provided in the purification chamber 331 to purify the outdoor fresh air flowing into the purification chamber 331; a second air inlet 37 is provided in the purification chamber 331, and a second air outlet 351 is provided in the fresh air cavity 321, so that the purification module 34 purifies the outdoor fresh air entering the purification chamber 331 through the second air inlet 37, and the air in the purification chamber 331 that has been purified by the purification module 34 passes through the first grille 322 into the fresh air cavity 321, and flows into the room through the vent 12 through the second air outlet 351. It should be noted that the fresh air cavity 321 and the purification chamber 331 together form a fresh air duct. It should also be noted that the reserved hole 312 is provided in the first volute 31, and the opening of the reserved hole 312 is arranged toward the drive motor 5, and the reserved hole 312 is connected to the fresh air cavity 321.

[0319] In some embodiments, as shown in FIG57 , the ventilation volute 3 is provided with a guide member 35 connected to the first volute 31 and the second volute 31. The guide member 35 defines a passage communicating with the fresh air cavity 321, so that the outdoor fresh air in the fresh air cavity 321 flows through the passage within the guide member 35 and flows into the room through the vent 12. It should be noted that the second air outlet 351 is provided at the end of the guide member 35 away from the ventilation volute 3 and is disposed toward the vent 12, so that the passage within the guide member 35 communicates with the vent 12.

[0320] In some embodiments, as shown in Figure 61, a constraint portion 311 is provided on the side of the first volute 31 facing away from the fresh air chamber 321, and the constraint portion 311 defines a constraint chamber 3111. One end of the coupling 6 connected to the fan shaft 106 is provided in the constraint chamber 3111 to constrain the position of the coupling 6.

[0321] In some embodiments, the purification module 34 includes a purification frame and a filter. The filter is disposed on the purification frame and is configured to filter and purify the outdoor fresh air to prevent impurities and flocculent matter contained in the outdoor fresh air from entering the room. It should be noted that the purification chamber 331 is provided with a socket so that the purification module 34 can be inserted into the purification chamber 331 through the socket, thereby enabling installation of the purification module 34. When the purification module 34 needs to be removed, the purification module 34 can be removed from the socket. By detachably installing the purification module 34 in the purification chamber 331, it is convenient for the user to disassemble, clean, and replace the filter. In this embodiment, the removal and installation of the purification module 34 are simple and easy to operate.

[0322] Because the drive motor 5 drives the second fan 4 and the first fan 10 to operate simultaneously, the first fan 10 cannot be stopped independently, resulting in the inability to turn off the fresh air function when the air conditioner indoor unit is operating. Therefore, the air conditioner indoor unit is provided with a switch assembly 36 at the second air inlet 37. The switch assembly 36 is used to open or close the second air inlet 37 to control whether outdoor fresh air is introduced into the purification chamber 331, thereby controlling the on and off of the fresh air function. When the air conditioner indoor unit is operating, if it is necessary to turn off the fresh air function, closing the second air inlet 37 can prevent outdoor fresh air from being introduced into the purification chamber 331, thereby preventing outdoor fresh air from flowing into the room through the second air outlet 351; when it is necessary to turn on the fresh air function, opening the second air inlet 37 can allow outdoor fresh air to be introduced into the purification chamber 331 through the second air inlet 37, thereby allowing outdoor fresh air to flow into the room through the second air outlet 351. It should be noted that closing the second air inlet 37 by the switch assembly 36 can also prevent fresh air from flowing back into the room when the air conditioner indoor unit is turned off, thereby reducing indoor air noise and wind sensation when the fresh air function is not turned on, and improving the use effect of the air conditioner.

[0323] For example, as shown in FIG58 , the switch assembly 36 includes a baffle 361, a baffle motor 363, a gear, and a rack 362. The baffle 361 is positioned at the second air inlet 37 in an openable and closable manner. The baffle motor 363 is mounted on the ventilation housing 33. A gear is connected to the rotating shaft of the baffle motor 363. The baffle 361 is provided with a rack 362, which meshes with the gear. When the fresh air function is on, the baffle motor 363 drives the gear to drive the rack 362 to move, which in turn drives the baffle 361 to move linearly, thereby opening the second air inlet 37 and allowing outdoor fresh air to enter the room. When the fresh air function is off, the baffle motor 363 drives the gear to drive the rack 362 to move, causing the baffle 361 to move linearly, closing the second air inlet 37 and preventing outdoor fresh air from entering the room. It should be noted that closing the second air inlet 37 by the baffle 361 can also prevent fresh air from flowing back into the room when the air conditioner indoor unit is turned off, reducing the indoor air noise and wind feeling when the fresh air function is not turned on, and improving the use effect of the air conditioner.

[0324] In the aforementioned air conditioner indoor unit, as shown in Figures 54, 55, and 63, the first fan 10 is configured to draw fresh air into the room. The first fan 10 is installed within the fresh air chamber 321. The operation of the first fan 10 draws fresh air from the outside into the fresh air chamber 321 via a pipeline through the second air inlet 37. After purification by the purification module 34, the air enters the fresh air chamber 321 and flows into the room through the second air outlet 351 and the vent 12.

[0325] For example, as shown in Figures 64 to 66, the first fan 10 includes a hub 101 and a plurality of blades 102. The plurality of blades 102 are arranged in sequence along the circumference of the hub 101 at intervals and are fixedly connected to the hub 101. The plurality of blades 102 are distributed along the circumference of the hub 101 and form a circular base. The plurality of blades 102 surround the circumference to form a fan cavity 108. The fan cavity 108 is located in the middle part of the circular base, and the fan cavity 108 is located on the side where the plurality of blades 102 are close to each other. The plurality of blades 102 are connected into one body by a connecting portion 103 on the side away from the cavity, so that the plurality of blades 102 can work synchronously, so that the blades 102 as a whole can achieve the best working effect. There are gaps between adjacent blades 102. The gaps between adjacent blades 102 communicate with the fan cavity 108 to form a fan outlet 109. The fan outlet 109 communicates with the fan cavity 108 and the second outlet 351 so that airflow in the fan cavity 108 can flow to the second outlet 351. The fan cavity 108 is also provided with a fan inlet, which is arranged toward the first grille 322. Indoor air in the fresh air cavity 321 enters the fan cavity 108 through the fan inlet and then flows out of the fan cavity 108 through the fan outlet 109. The ends of the blades 102 facing away from the fan inlet are connected to a hub 101 and are connected together by the hub 101 to increase the firmness of the connection between the blades 102. The connecting portion 103 is located at the end of the blade 102 facing the air inlet, and the connecting portion 103 and the hub 101 are respectively arranged at both ends of the blade 102 to ensure the firmness of the connection between the blades 102, so that the blades 102 as a whole can exert the maximum working effect. The connecting portion 103 is only connected to the side of the blades 102 away from the cavity. The purpose is to prevent the area of ​​the connecting portion 103 from being too large to affect the working effect of the blade 102. Moreover, the connecting portion 103 is formed by integral injection molding with the blade 102. Reducing the area of ​​the connecting portion 103 can reduce the overall weight of the first fan 10. It should be noted that the side of the hub 101 away from the blade 102 is arranged toward the first volute 31, and there is a certain gap between the hub 101 and the first volute 31 along the length direction of the casing 1 to ensure the reliability of the operation of the first fan 10. It should also be noted that the first fan 10 is a centrifugal fan.

[0326] In some embodiments, the first fan 10 is provided with a connecting cavity 104 , a fan shaft 106 is provided in the connecting cavity 104 , and a fixing portion 105 is provided in the connecting cavity 104 , and one end of the fan shaft 106 away from the support shaft 41 is connected to the fixing portion 105 .

[0327] In other embodiments, the fixing portion 105 and the inner wall of the connecting cavity 104 opening toward the connecting cavity 104 jointly define a receiving cavity, and the end of the fan shaft 106 away from the support shaft 41 extends into the receiving cavity to increase the strength of the connection between the fan shaft 106 and the fixing portion 105.

[0328] In some embodiments, the connecting cavity 104 is formed by a middle portion of the hub 101 protruding in a direction away from the reserved hole 312 , and the opening of the connecting cavity 104 is arranged toward the reserved hole 312 .

[0329] In some embodiments, there is no direct connection between the first fan 10 and the first volute 31 in the length direction of the casing 1, resulting in a large difference between the actual value and the theoretical value of the gap size between the first fan 10 and the first volute 31. Therefore, in this embodiment, a connector 20 is provided, and one end of the connector 20 along the length direction of the casing 1 is fixedly connected to the first volute 31, and the other end of the connector 20 along the length direction of the casing 1 is relatively rotatably connected to the first fan 10 to ensure the reliability and stability of the connection relationship between the first fan 10 and the first volute 31, thereby reducing the deviation between the actual value and the theoretical value of the gap size. It should be noted that the connector 20 is provided with a connector cavity for the fan shaft 106 to pass through, so that the fan shaft 106 passes through the connector cavity and the reserved hole 312 to connect with the second motor shaft 52.

[0330] For example, as shown in Figures 66 to 69, the connector 20 includes a first connector 202 and a second connector 201. The first connector 202 is connected to the first volute 31, and the second connector 201 is connected to the first connector 202 at one end along the length of the housing 1. The second connector 201 is rotatably connected to the first fan 10 at the other end along the length of the housing 1. The first connector 202 defines a first cavity 2021, which is arranged along the length of the housing 1 and passes through the first connector 202. The second connector 201 defines a second cavity 2013, which communicates with the first cavity 2021 to form the connector cavity. The second cavity 2013 allows the fan shaft 106 to pass through the second cavity 2013, and the first cavity 2021 is connected to the second motor shaft 52. It should be noted that the first cavity 2021 and the second cavity 2013 are each a cavity extending along the length of the housing 1.

[0331] To facilitate the rotational connection between the second connecting member 201 and the first fan 10, the first fan 10 is provided with a connecting cavity 104, which has an opening facing the reserved hole 312. The second connecting member 201 includes a contact portion 2012, which extends along the length of the housing 1. One end of the contact portion 2012 along the length of the housing 1 extends into the connecting cavity 104 and is rotatably connected to the first fan 10. It should be noted that a gap exists between the end of the contact portion 2012 extending into the connecting cavity 104 and the inner wall of the connecting cavity 104. A movable member 9 is installed in the gap. The movable member 9 contacts the contact portion 2012 and the inner wall of the connecting cavity 104, so that the second connecting member 201 and the first fan 10 can rotate relative to each other. It should be noted that a shielding portion 2011 is provided at one end of the contact portion 2012 away from the connecting cavity 104. The shielding portion 2011 is connected to the first connecting member 202 and extends in a plane intersecting the opening of the connecting cavity 104. The shielding portion 2011 is located at the opening of the connecting cavity 104 to close the opening of the connecting cavity 104 and prevent the outdoor fresh air in the fresh air cavity 321 from entering the connecting cavity 104. It should be noted that the movable member 9 is typically a ball, but may also be a roller.

[0332] In order to facilitate the connection between the first connecting member 202 and the first volute 31, the first connecting member 202 is provided with a first protrusion 2022 and a second protrusion 2023, and the first protrusion 2022 and the second protrusion 2023 are respectively provided with mounting holes. The first volute 31 is provided with a connecting hole 313, and the connecting hole 313 is arranged corresponding to the mounting hole. Fasteners such as bolts or screws are arranged in the mounting hole and the corresponding connecting hole 313 to fix the first connecting member 202 to the first volute 31.

[0333] In some embodiments, the first connecting member 202 and the second connecting member 201 are detachably connected, and the first connecting member 202 is provided with a third protrusion 2024, and the third protrusion 2024 and the shielding portion 2011 are respectively provided with mounting holes, and fasteners such as bolts or screws are provided in the mounting holes of the third protrusion 2024 and the shielding portion 2011 to fixedly connect the third protrusion 2024 and the shielding portion 2011; it should be noted that one end of the first protrusion 2022 along the length direction of the casing 1 contacts the first volute 31, and the other end of the first protrusion 2022 along the length direction of the casing 1 contacts the shielding portion 2011.

[0334] In other embodiments, the fan shaft 106 is provided with a rotating portion 107. The rotating portion 107 is disposed within the first cavity 2021 and is rotatable relative to the first cavity 2021 to support the rotation of the fan shaft 106, thereby increasing the stability of the first fan 10 during operation. It should be noted that a positioning portion 2025 is provided within the first cavity 2021. The positioning portion 2025 is disposed near the opening of the first cavity 2021 and cooperates with the rotating portion 107 to locate the installation position of the rotating portion 107 within the first cavity 2021.

[0335] In the above-mentioned air-conditioning indoor unit, the bearing 7 is sleeved on the outer periphery of the support shaft 41 to support the rotation of the support shaft 41. The bearing 7 is provided with a bearing cavity 714 for the support shaft 41 to pass through, and the support shaft 41 is provided in the bearing cavity 714 so that the bearing 7 provides support for the rotation of the support shaft 41. For example, as shown in Figures 69 to 71, the bearing 7 includes a bearing sleeve 71 and a bearing ball 72, and the bearing cavity 714 is provided through the bearing sleeve 71 and the bearing ball 72. The support shaft 41 is provided through the bearing cavity 714. It should be noted that an installation space 715 is provided in the bearing sleeve 71, and the installation space 715 is connected to the bearing cavity 714 and is provided close to the second fan 4; the bearing ball 72 is provided in the installation space 715 and is connected to the support shaft 41.

[0336] In some embodiments, a reinforcement portion 716 is provided at the end of the bearing sleeve 71 away from the second fan 4. The bearing cavity 714 extends axially along the support shaft 41 to the reinforcement portion 716 to increase the contact area between the support shaft 41 and the bearing sleeve 71. It should be noted that the end of the reinforcement portion 716 away from the bearing sleeve 71 is a closed end.

[0337] In the above-mentioned air conditioner indoor unit, the bearing seat 8 is used to install the bearing 7 so that the bearing 7 can better support the support shaft 41. The bearing seat 8 is arranged outside the bearing 7 and installed on the housing 1. For example, as shown in Figures 73 to 76, a first through cavity 84 is provided inside the bearing seat 8. The first through cavity 84 is used to install the bearing 7. The bearing 7 is arranged in the first through cavity 84 and the outer periphery of the bearing sleeve 71 is tightly fitted with the inner wall of the first through cavity 84 to connect the bearing 7 to the bearing seat 8. The first through cavity 84 extends along the length direction of the housing 1 so that the support shaft 41 can extend into the first through cavity 84 to connect with the bearing 7 and pass through the first through cavity 84 to connect with the second fan 4. It should be noted that a connecting platform is provided in the first through-cavity 84. The connecting platform is located in the first through-cavity 84 and is arranged circumferentially along the first through-cavity 84. The bearing sleeve 71 is provided with a connecting block 711. The connecting block 711 is located on the outer circumference of the bearing sleeve 71 and is arranged circumferentially along the bearing sleeve 71. The connecting block 711 abuts against the connecting platform, so that the bearing sleeve 71 is pressed and assembled with the inner wall of the first through-cavity 84, thereby fixedly connecting the bearing 7 to the bearing seat 8. It should also be noted that the connecting platform is connected to the inner wall of the first through-cavity 84, and the inner diameter of the connecting platform gradually decreases along the axial direction of the first through-cavity 84 from the direction in which it approaches the second fan 4. The closer the bearing sleeve 71 is to the second fan 4, the greater the mutual extrusion force between the bearing sleeve 71 and the inner wall of the first through-cavity 84, thereby facilitating the connection of the bearing 7 to the bearing seat 8.

[0338] In some embodiments, the bearing seat 8 is provided with a stopper 85 , which is located at the opening of the first through cavity 84 toward the second fan 4 . The stopper 85 cooperates with the bearing sleeve 71 to prevent the bearing sleeve 71 from separating from the first through cavity 84 .

[0339] In some embodiments, the bearing seat 8 is provided with a positioning block 86, which is located in the first through cavity 84. The bearing sleeve 71 is provided with a connecting groove 712 corresponding to the positioning block 86, and the connecting groove 712 is located on the outer circumference of the bearing sleeve 71. The positioning block 86 is disposed in the connecting groove 712 to locate the installation position of the bearing 7 in the first through cavity 84.

[0340] In some embodiments, the bearing sleeve 71 is provided with a buffer rib 713 on its outer periphery. The buffer rib 713 is formed by a protrusion on the outer surface of the bearing sleeve 71 and abuts against the inner wall of the first through cavity 84. The buffer rib 713 not only facilitates the installation of the bearing sleeve 71 within the first through cavity 84, but also increases the firmness of the abutment between the bearing sleeve 71 and the inner wall of the first through cavity 84, and also protects the portion of the bearing sleeve 71 that contacts the inner wall of the first through cavity 84.

[0341] In order to facilitate the installation of the bearing seat 8, as shown in Figures 52 and 53, the second mounting portion 18 is provided with a limiting space 181, which extends along the length direction of the casing 1. The bearing seat 8 is arranged in the limiting space 181 to position the bearing seat 8 in the installation position of the second mounting portion 18.

[0342] In some embodiments, a accommodating cavity is provided in the second mounting portion 18, the opening of the accommodating cavity is set toward the top of the casing 1 and is connected to the limiting space 181, and a first support platform 183 is provided in the accommodating cavity, which abuts against the bottom of the bearing seat 8 to support the bearing seat 8.

[0343] In some embodiments, the bearing seat 8 is provided with an extension portion 83, which is provided in the accommodating cavity to locate the connection position between the bearing seat 8 and the second mounting portion 18. It should be noted that the bearing seat 8 can be provided with two extension portions 83, the two extension portions 83 are respectively located on the outside of the bearing seat 8 and extend along the height direction of the casing 1; the two extension portions 83 are respectively arranged opposite to each other along the length direction of the casing 1 with a gap between them. The first support platform 183 is located between the two extension portions 83; it should also be noted that the accommodating cavity includes a first accommodating cavity and a second accommodating cavity, the first accommodating cavity and the second accommodating cavity are arranged side by side, the first accommodating cavity is arranged close to the fresh air module, and the second accommodating cavity is arranged close to the second fan 4; the two extension portions 83 are correspondingly arranged in the first accommodating cavity and the second accommodating cavity to further position the bearing seat 8.

[0344] In other embodiments, as shown in Figures 53 and 73, the clamping portion 82 is provided in the extension portion 83 in the first accommodating cavity and is located on the side of the extension portion 83 away from the other extension portion 83; the second mounting portion 18 is provided with a clamping space 184, the clamping space 184 is communicated with the first accommodating cavity, and the clamping portion 82 is provided in the clamping space 184 to fix the bearing seat 8 to the second mounting portion 18, thereby installing the bearing seat 8 in the housing 1.

[0345] In some embodiments, as shown in Figure 73, the bearing seat 8 further includes a support portion 81 connected to the tops of the two extension portions 83. As shown in Figure 53, a second support platform 182 is further provided within the accommodating cavity, with the support portion 81 located on top of the second support platform 182 to support the bearing seat 8. It should be noted that the bearing seat 8 can have two support portions 81, symmetrically arranged along the thickness direction of the housing 1; and two second support platforms 182 can also be provided within the accommodating cavity, with the two second support platforms 182 corresponding one-to-one to the two support portions 81.

[0346] The first fan 10 in the above-mentioned air conditioning indoor unit has high installation precision, and the deviation between the actual value and the theoretical value of the gap between the first fan 10 and the first volute 31 is small, thereby ensuring that the noise transmitted to the room during operation of the air conditioning indoor unit is small and the fresh air volume is large. The air conditioning indoor unit is fixedly connected to the first volute 31 by providing a connector 20 and is relatively rotatably connected to the first fan 10, so that the actual value and the theoretical value of the gap between the first fan 10 and the inner wall of the first volute 31 have a small deviation, thereby ensuring the installation precision of the first fan 10 in the fresh air chamber 321; and the connector 20 defines a connector cavity, so that the fan shaft 106 passes through the connector cavity and is connected to the second motor shaft 52 of the drive motor 5, so that the drive motor 5 drives the first fan 10 to operate; by providing a rotating portion 107 on the fan shaft 106, the rotating portion 107 is installed in the connector cavity to support the rotation of the fan shaft 106, thereby increasing the stability of the first fan 10 during operation.

[0347] Figures 77 to 96 show some embodiments of the air-conditioning indoor unit disclosed herein. In these embodiments, the air-conditioning indoor unit includes a casing 1, a heat exchanger 4, a fresh air module, a second fan 6, a drive motor 5 and a bearing 7.

[0348] In the aforementioned air conditioning indoor unit, as shown in FIG77 , the casing 1 forms the overall appearance of the air conditioning indoor unit. The casing 1 has a top and a bottom. The top and bottom of the casing 1 are opposite ends, and the height of the casing 1 is measured from the top to the bottom. The left side of the casing 1 and the right side of the casing 1 are opposite ends, and the length of the casing 1 is measured from the left to the right. The front side of the casing 1 and the rear side of the casing 1 are opposite ends, and the thickness of the casing 1 is measured from the front to the rear. In this embodiment, the air conditioning indoor unit is a wall-mounted unit, with the rear side of the casing 1 facing a wall. A heat exchange duct is defined within the casing 1. The casing 1 is provided with an air inlet 11 and an air outlet 15. The air inlet 11 and the air outlet 15 are each connected to the heat exchange duct. The air inlet 11 is located at the top of the casing 1, and a second grille is provided at the air inlet 11 to prevent debris from entering the interior of the casing 1. The housing air outlet 15 is located on the lower front side of the housing 1. An air deflector 2 is provided at the housing air outlet 15. The air deflector 2 is connected to the housing 1 in an openable and closable manner to open or close the housing air outlet 15. It should be noted that the housing 1 also has a vent 12 to allow outdoor fresh air to flow into the room through the vent 12. In some embodiments, the vent 12 is located to the left of the housing air inlet 11 and is opened upward, so that the outdoor fresh air flows upward into the room, thereby preventing the outdoor fresh air from mixing with the conditioned air.

[0349] In some embodiments, as shown in Figures 80 and 82 , the housing 1 is provided with a first mounting cavity 14, a second mounting cavity 13, and a third mounting cavity 16. The second mounting cavity 13, the first mounting cavity 14, and the third mounting cavity 16 are sequentially distributed along the length of the housing 1. The first mounting cavity 14 is used to mount the second fan 6; the second mounting cavity 13 is used to mount the drive motor 5; and the third mounting cavity 16 is used to mount the fresh air module.

[0350] In other embodiments, the third mounting cavity 16 is located to the left of the first mounting cavity 14, and the second mounting cavity 13 is located to the right of the first mounting cavity 14. The second mounting cavity 13 and the first mounting cavity 14 are separated from each other by a first mounting portion 17, and the first mounting cavity 14 and the third mounting cavity 16 are separated from each other by a second mounting portion 18. It should be noted that the third mounting cavity 16, the first mounting cavity 14, and the second mounting cavity 13 are arranged sequentially from left to right along the length of the housing 1.

[0351] In the aforementioned air conditioner indoor unit, as shown in Figure 78 , the heat exchanger 4 is configured to heat the indoor air within the housing 1 to generate conditioned air, thereby meeting the user's cooling or heating needs. The heat exchanger 4 is installed within the heat exchange air duct. It should be noted that the heat exchanger 4 is positioned near the housing air inlet 11. It should also be noted that the conditioned air can be cold air, hot air, or even air at room temperature.

[0352] In the aforementioned air conditioning indoor unit, as shown in Figures 78 to 80 , the fresh air module is configured to draw outdoor fresh air into the room. The fresh air module includes a ventilation volute 3 and a first fan 9. The ventilation volute 3 is mounted in the third mounting cavity 16. A fresh air duct is defined within the ventilation volute 3. The first fan 9 is mounted within the fresh air duct. The fresh air duct is provided with a second air inlet 35 and a second air outlet 37. The second air inlet 35 communicates with the outside, and the second air outlet 37 communicates with the vent 12. The operation of the first fan 9 draws outdoor fresh air into the fresh air duct through a pipeline via the second air inlet 37. The air then flows through the second air outlet 35 and out of the vent 12 into the room. It should be noted that in some embodiments, a purification module 34 is provided within the fresh air duct to purify the outdoor fresh air flowing into the room.

[0353] For example, as shown in Figures 86 and 87 , the ventilation volute 3 includes a first volute 31, a second volute 32, and a ventilation housing 33. The first volute 31 and the second volute 32 are disposed opposite each other and together form a fresh air chamber 321. The first fan 9 is installed in the fresh air chamber 321. The ventilation housing 33 and the second volute 32 are disposed opposite each other on a side facing away from the first volute 31 to together form a purification chamber 331. The second volute 32 is provided with a first grille 322 located at the junction of the purification chamber 331 and the fresh air chamber 321, thereby ensuring communication between the purification chamber 331 and the fresh air chamber 321. The second air inlet 37 is provided in the purification chamber 331, and the second air outlet 35 is provided in the fresh air cavity 321. The purification module 34 is disposed within the purification chamber 331 so that the purification module 34 purifies the outdoor fresh air entering the purification chamber 331 through the second air inlet 37. The air in the purification chamber 331, purified by the purification module 34, passes through the first grille 322 and enters the fresh air cavity 321. The air then flows through the second air outlet 35 and out of the vent 12 into the room. It should be noted that the fresh air cavity 321 and the purification chamber 331 together form a fresh air duct.

[0354] In some embodiments, the purification module 34 includes a purification frame and a filter. The filter is disposed on the purification frame and is configured to filter and purify the outdoor fresh air to prevent impurities and flocculent matter contained in the outdoor fresh air from entering the room. It should be noted that the purification chamber 331 is provided with a socket so that the purification module 34 can be inserted into the purification chamber 331 through the socket, thereby enabling installation of the purification module 34. When the purification module 34 needs to be removed, the purification module 34 can be removed from the socket. By detachably installing the purification module 34 in the purification chamber 331, it is convenient for the user to disassemble, clean, and replace the filter. In this embodiment, the removal and installation of the purification module 34 are simple and easy to operate.

[0355] In the aforementioned air conditioner indoor unit, as shown in Figures 86, 87, and 89, the first fan 9 is configured to draw fresh air into the room; the first fan 9 is installed within the fresh air chamber 321. The operation of the first fan 9 draws fresh air from the outside into the purification chamber 331 via a pipeline through the second air inlet 37. After purification by the purification module 34, the fresh air enters the fresh air chamber 321 and flows into the room through the second air outlet 35 and the vent 12. It should be noted that the first fan 9 is a centrifugal fan.

[0356] In the above-mentioned air-conditioning indoor unit, as shown in Figures 79, 88 and 89, the second fan 6 is configured to introduce indoor air into the interior of the casing 1, and after heat exchange in the heat exchanger 4 to form conditioned air, the conditioned air is flowed into the room from the casing air outlet 15. The second fan 6 is installed in the first installation cavity 14 and is located on the side of the heat exchanger 4 away from the casing air inlet 11. The second fan 6 is connected to a drive motor 5, which is installed in the second installation cavity 13 to drive the second fan 6 to operate. It should be noted that the end of the second fan 6 away from the drive motor 5 is connected to the first fan 9, so that the drive motor 5 can drive the second fan 6 and the first fan 9 to operate simultaneously. It should also be noted that the second fan 6 is a cross-flow fan.

[0357] In some embodiments, as shown in FIG89 , the second fan 6 extends along the length of the housing 1 . A fan sleeve 62 is provided at one end of the second fan 6 connected to the drive motor 5 . The fan sleeve 62 is provided with a connection hole, into which the rotating shaft of the drive motor 5 extends, thereby connecting the drive motor 5 to the second fan 6 . A drive shaft 61 is connected to the end of the second fan 6 away from the drive motor 5 . The drive shaft 61 connects the second fan 6 to the first fan 9 . One end of the drive shaft 61 is connected to the second fan 6 , and the other end of the drive shaft 61 is connected to the first fan 9 , so that the second fan 6 and the first fan 9 operate simultaneously. It should be noted that in order to facilitate the connection of the drive shaft 61 to the first fan 9 disposed in the fresh air chamber 321 , the first volute 31 is provided with a reserved hole 311 . The reserved hole 311 is in communication with the fresh air chamber 321 , and the opening of the reserved hole 311 is disposed toward the second fan 6 .

[0358] Since the driving motor 5 drives the second fan 6 and the first fan 9 to operate simultaneously, the first fan 9 cannot be stopped independently, resulting in the inability to turn off the fresh air function when the air conditioner indoor unit is operating. Therefore, the air conditioner indoor unit is provided with a switch assembly 36 at the second air inlet 37. The switch assembly 36 is used to open or close the second air inlet 37 to control whether outdoor fresh air is introduced into the purification chamber 331, thereby controlling the opening and closing of the fresh air function. When the air conditioner indoor unit is operating, if it is necessary to turn off the fresh air function, closing the second air inlet 37 can prevent outdoor fresh air from being introduced into the purification chamber 331, thereby preventing outdoor fresh air from flowing into the room through the second air outlet 35; when it is necessary to turn on the fresh air function, opening the second air inlet 37 can allow outdoor fresh air to be introduced into the purification chamber 331 through the second air inlet 37, thereby allowing outdoor fresh air to flow into the room through the second air outlet 35. It should be noted that closing the second air inlet 37 by the switch assembly 36 can also prevent fresh air from flowing back into the room when the air conditioner indoor unit is turned off, thereby reducing indoor air noise and drafts when the fresh air function is not turned on, thereby improving the performance of the air conditioner. The specific structure of the switch assembly 36 can be found in the relevant description above and will not be repeated here.

[0359] In the above-mentioned air conditioning indoor unit, the bearing 7 is sleeved on the outer periphery of the drive shaft 61 and is configured to support the rotation of the drive shaft 61. The bearing 7 is provided with a bearing cavity 714 for the drive shaft 61 to pass through. The drive shaft 61 passes through the bearing cavity 714 and extends into the fresh air chamber 321 to connect with the first fan 9. For example, as shown in Figures 90 to 93, the bearing 7 includes a bearing sleeve 71 and a bearing ball 72. The bearing cavity 714 is provided through the bearing sleeve 71 and the bearing ball 72; the two end openings of the bearing cavity 714 are respectively provided toward the first fan 9 and the second fan 6. The drive shaft 61 is provided through the bearing cavity 714. It should be noted that the bearing sleeve 71 is provided with an installation space 715, which is connected to the bearing cavity 714 and is located near the second fan 6; the bearing ball 72 is provided in the installation space 715 and is connected to the drive shaft 61.

[0360] In the aforementioned air conditioner indoor unit, as shown in Figures 81, 84, 85, 92, and 94, a bearing seat 8 is used to mount a bearing 7, enabling the bearing 7 to better support the drive shaft 61. The bearing seat 8 is disposed externally of the bearing 7 and connected to the housing 1. For example, as shown in Figures 94 to 96, a first through-cavity 84 is defined within the bearing seat 8. The first through-cavity 84 is used to mount the bearing 7. The bearing 7 is disposed within the first through-cavity 84, and the outer periphery of the bearing sleeve 71 closely fits the inner wall of the first through-cavity 84, thereby connecting the bearing 7 to the bearing seat 8. The first through-cavity 84 extends along the length of the housing 1, with the openings at both ends of the first through-cavity 84 facing the first volute 31 and the second fan 6, respectively. This allows the drive shaft 61 to extend into the first through-cavity 84, connect to the bearing 7, and pass through the first through-cavity 84 to connect to the second fan 6. It should be noted that a connecting platform is provided in the first through-cavity 84, located within the first through-cavity 84 and arranged circumferentially along the first through-cavity 84; the bearing sleeve 71 is provided with a connecting block 711, which is located on the outer circumference of the bearing sleeve 71 and arranged circumferentially along the bearing sleeve 71. The connecting block 711 abuts against the connecting platform, so that the bearing sleeve 71 is pressed and assembled with the inner wall of the first through-cavity 84, thereby fixedly connecting the bearing 7 to the bearing seat 8. It should also be noted that the connecting platform is connected to the inner wall of the first through-cavity 84, and the inner diameter of the connecting platform gradually decreases along the axial direction of the first through-cavity 84 from its direction closer to the second fan 6, so that the closer the bearing sleeve 71 is to the second fan 6, the greater the mutual extrusion force between the bearing sleeve 71 and the inner wall of the first through-cavity 84, thereby facilitating the connection of the bearing 7 to the bearing seat 8.

[0361] In some embodiments, the bearing seat 8 is provided with a stopper 85 , which is located at the opening of the first through cavity 84 toward the second fan 6 . The stopper 85 cooperates with the bearing sleeve 71 to prevent the bearing sleeve 71 from separating from the first through cavity 84 .

[0362] In some embodiments, the bearing seat 8 is provided with a positioning block 86, which is located in the first through cavity 84; the bearing sleeve 71 is provided with a connecting groove 712 corresponding to the positioning block 86, and the connecting groove 712 is located on the outer periphery of the bearing sleeve 71; the positioning block 86 is provided in the connecting groove 712 to locate the installation position of the bearing 7 in the first through cavity 84.

[0363] In some embodiments, the bearing sleeve 71 is provided with a buffer rib 713 on its outer periphery. The buffer rib 713 is formed by a protrusion on the outer surface of the bearing sleeve 71 and abuts against the inner wall of the first through cavity 84. The buffer rib 713 not only facilitates the installation of the bearing sleeve 71 within the first through cavity 84, but also increases the firmness of the abutment between the bearing sleeve 71 and the inner wall of the first through cavity 84, and also protects the portion of the bearing sleeve 71 that contacts the inner wall of the first through cavity 84.

[0364] In order to facilitate the installation of the bearing seat 8, as shown in Figures 82 and 83, the second mounting portion 18 is provided with a through channel 181, which extends along the length direction of the casing 1. The bearing seat 8 is arranged in the through channel 181 to position the installation position of the bearing seat 8 in the second mounting portion 18.

[0365] In some embodiments, a accommodating cavity is provided in the second mounting portion 18, the opening of the accommodating cavity is set toward the top of the casing 1 and is connected to the through channel 181, and a first support platform 183 is provided in the accommodating cavity, which abuts against the bottom of the bearing seat 8 to support the bearing seat 8.

[0366] In some embodiments, as shown in Figures 95 and 96, the bearing seat 8 is provided with an extension portion 83, and the extension portion 83 is provided in the accommodating cavity to locate the connection position between the bearing seat 8 and the second mounting portion 18. It should be noted that the bearing seat 8 can be provided with two extension portions 83, and the two extension portions 83 are respectively located on the outside of the bearing seat 8 and extend along the height direction of the casing 1; the two extension portions 83 are respectively arranged opposite to each other along the length direction of the casing 1 and there is a gap between the two. The first support platform 183 is located between the two extension portions 83. It should also be noted that the accommodating cavity includes a first accommodating cavity and a second accommodating cavity, and the first accommodating cavity and the second accommodating cavity are arranged side by side, the first accommodating cavity is arranged close to the fresh air module, and the second accommodating cavity is arranged close to the second fan 6; the two extension portions 83 are correspondingly arranged in the first accommodating cavity and the second accommodating cavity to further position the bearing seat 8.

[0367] In other embodiments, as shown in Figures 85 and 95, the clamping portion 82 is disposed on the extension portion 83 within the first accommodating cavity and is located on a side of the extension portion 83 facing away from the other extension portion 83. The second mounting portion 18 defines a clamping space 184 that communicates with the first accommodating cavity. The clamping portion 82 is disposed within the clamping space 184 to securely connect the bearing seat 8 to the second mounting portion 18, thereby mounting the bearing seat 8 within the housing 1.

[0368] In some embodiments, as shown in Figure 95 , the bearing seat 8 further includes a support portion 81 connected to the tops of the two extension portions 83. As shown in Figure 83 , a second support platform 182 is further provided within the accommodating cavity, with the support portion 81 located atop the second support platform 182 to support the bearing seat 8. It should be noted that the bearing seat 8 may include two support portions 81, symmetrically arranged along the thickness of the housing 1; furthermore, two second support platforms 182 may be provided within the accommodating cavity, corresponding one-to-one with the two support portions 81.

[0369] In actual application, the drive shaft 61 is provided with a positioning portion, which protrudes from the outer periphery of the drive shaft 61 and is located in the fresh air chamber 321 to locate the connection position between the first fan 9 and the drive shaft 61. It should be noted that the minimum value of the range of distances between a point on the axis of the drive shaft 61 and a point on the outer edge of the positioning portion is the distance between a point on the axis of the drive shaft 61 and the outer periphery of the drive shaft 61, that is, the outer diameter of the positioning portion must be larger than the outer diameter of the drive shaft 61 at the connection with the positioning portion, so that the positioning portion can effectively position the first fan 9.

[0370] In some embodiments, the positioning portion is detachably connected to the drive shaft 61; the positioning portion is usually a retaining ring, and the drive shaft 61 is provided with a positioning space 712 corresponding to the retaining ring. The positioning space 712 is arranged along the circumference of the drive shaft 61, and the retaining ring is arranged in the positioning space 712 to connect the retaining ring to the drive shaft 61.

[0371] In some embodiments, the positioning portion and the driving shaft 61 are integrally formed, and the positioning portion and the driving shaft 61 are usually made of metal through lathing.

[0372] It should be noted that, no matter the positioning portion and the drive shaft 61 are detachably connected or integrally formed, the positioning portion is usually integrated with the drive shaft 61, and then passes through the reserved hole 311 and extends into the fresh air cavity 321 to connect with the first fan 9. This requires that the inner diameter of the reserved hole 311 is usually larger than the outer diameter of the positioning portion, so that the positioning portion can freely pass through the reserved hole 311 and is arranged in the fresh air cavity 321. The outer diameter of the driving shaft 61 is usually smaller than the outer diameter of the positioning portion. Therefore, when the driving shaft 61 passes through the reserved hole 311, there will be a certain gap between the driving shaft 61 and the reserved hole 311. The outdoor fresh air in the fresh air cavity 321 is easy to leak from the gap between the driving shaft 61 and the reserved hole 311, resulting in condensation around the reserved hole 311 and on the driving shaft 61, affecting product quality. Therefore, in this embodiment, a sealing member 10 is provided at the reserved hole 311, and the gap between the driving shaft 61 and the reserved hole 311 is sealed by the sealing member 10 to prevent the outdoor fresh air in the fresh air cavity 321 from leaking.

[0373] For example, as shown in Figures 90 to 92, the seal 10 includes a connecting portion 102 and a sealing portion 101. The sealing portion 101 is provided at the edge of the reserved hole 311 and is connected to the side of the first volute 31 facing away from the fresh air chamber 321. The connecting portion 102 extends along the axial direction of the drive shaft 61. One end of the connecting portion 102 is connected to the side of the sealing portion 101 facing away from the first volute 31, and the other end of the connecting portion 102 is connected to the bearing sleeve 71. It should be noted that a transition cavity 103 is defined within the seal 10. The transition cavity 103 is provided along the axial direction of the drive shaft 61 and passes through the sealing portion 101 and the connecting portion 102. The transition cavity 103 is communicated with the first through cavity 84 and the fresh air chamber 321, respectively, so that the drive shaft 61 can pass through the transition cavity 103 into the fresh air chamber 321 and connect to the first fan 9, thereby preventing the sealing portion 101 from obstructing the drive shaft 61 from extending into the fresh air chamber 321. Since the transition chamber 103 is connected with the fresh air chamber 321 and the first through chamber 84, the drive shaft 61 passes through the first through chamber 84 and the transition chamber 103 into the fresh air chamber 321 and is connected to the first fan 9, driving the first fan 9 and the second fan 6 to operate synchronously. The outdoor fresh air in the fresh air chamber 321 cannot leak from the gap between the drive shaft 61 and the reserved hole 311 due to the blocking effect of the seal 10.

[0374] In some embodiments, the maximum value of the range of distances between a point on the axis of the drive shaft 61 and a point on the periphery of the sealing portion 101 is the distance between a point on the axis of the drive shaft 61 and a point on the periphery of the connecting portion 102, that is, the outer diameter of the sealing portion 101 is greater than the outer diameter of the connecting portion 102.

[0375] In other embodiments, the seal 10 and the bearing sleeve 71 are integrally formed to facilitate connection of the seal 10 and the bearing sleeve 71 and facilitate production of the seal 10 and the bearing sleeve 71 .

[0376] In other embodiments, the seal 10 and the bearing sleeve 71 are made of rubber or silicone. This is because rubber or silicone is softer and more compressible, and thus has a better sealing effect on the fresh air chamber 321 .

[0377] The working principle of the above-mentioned air-conditioning indoor unit is: the driving motor 5 drives the second fan 6 to rotate, the driving shaft 61 passes through the first through cavity 84 and the transition cavity 103 to drive the first fan 9 to rotate, and the sealing part 101 is arranged at the reserved hole 311 to seal the gap between the driving shaft 61 and the reserved hole 311, thereby preventing the outdoor fresh air in the fresh air cavity 321 from leaking through the gap between the driving shaft 61 and the reserved hole 311.

[0378] The steps for connecting the drive shaft 61 and the first fan 9 in the above-mentioned air-conditioning indoor unit are as follows: first, the drive shaft 61 passes through the reserved hole 311 and is connected to the first fan 9 , and then the second volute 32 is connected to the first volute 31 .

[0379] The air conditioning indoor unit is provided with a seal 10 that seals the gap between the drive shaft 61 and the reserved hole 311, thereby preventing outdoor fresh air from leaking from the fresh air chamber 321 through the gap between the drive shaft 61 and the reserved hole 311. Furthermore, the seal 10 defines a transition chamber 103 that connects the first through chamber 84 with the fresh air chamber 321, allowing the drive shaft 61 to pass through the transition chamber 103 and connect to the first fan 9 within the fresh air chamber 321. This does not affect the sealing effect of the seal 10, nor does the provision of the seal 10 in the reserved hole 311 hinder the connection between the drive shaft 61 and the first fan 9. The fresh air chamber 321 in the air conditioning indoor unit is effectively sealed, preventing outdoor fresh air from leaking, providing a large fresh air volume, and preventing condensation.

[0380] Figures 97 to 122 are some embodiments of the air-conditioning indoor unit disclosed in the present invention. In these embodiments, the air-conditioning indoor unit includes a casing 1, a heat exchanger, a fresh air module, a second fan 4 and a drive motor 5.

[0381] In the aforementioned air conditioning indoor unit, as shown in FIG97 , the housing 1 forms the overall appearance of the indoor unit. The housing 1 has a top and a bottom. The top and bottom of the housing 1 are opposite ends, and the height of the housing 1 is measured from the top to the bottom. The left side of the housing 1 and the right side of the housing 1 are opposite ends, and the length of the housing 1 is measured from the left to the right. The front side of the housing 1 and the rear side of the housing 1 are opposite ends, and the thickness of the housing 1 is measured from the front to the rear. In this embodiment, the indoor unit is a wall-mounted unit, with the rear side of the housing 1 facing a wall. A heat exchange duct is defined within the housing 1. The housing 1 is provided with an air inlet 11 and an air outlet 15. The air inlet 11 and the air outlet 15 are each connected to the heat exchange duct. The air inlet 11 is located at the top of the housing 1, and a second grille is provided at the air inlet 11 to prevent debris from entering the interior of the housing 1. The housing air outlet 15 is located on the lower front side of the housing 1. An air deflector 2 is provided at the housing air outlet 15. The air deflector 2 is connected to the housing 1 in an openable and closable manner to open or close the housing air outlet 15. It should be noted that the housing 1 also has a vent 12 to allow outdoor fresh air to flow into the room through the vent 12. In some embodiments, the vent 12 is located to the left of the housing air inlet 11 and is opened upward, so that the outdoor fresh air flows upward into the room, thereby preventing the outdoor fresh air from mixing with the conditioned air.

[0382] In some embodiments, as shown in FIG100 , the housing 1 is provided with a first mounting cavity 14, a second mounting cavity 13, and a third mounting cavity 16. The first mounting cavity 14, the second mounting cavity 13, and the third mounting cavity 16 are sequentially distributed along the length of the housing 1. The first mounting cavity 14 is used to mount the second fan 4; the second mounting cavity 13 is used to mount the drive motor 5; and the third mounting cavity 16 is used to mount the fresh air module.

[0383] In other embodiments, the second mounting cavity 13 is located to the right of the first mounting cavity 14; the third mounting cavity 16 is located to the right of the second mounting cavity 13. The first mounting cavity 14 is provided with a first mounting portion 17 and a second mounting portion 18 at each end along the length of the housing 1. The first mounting cavity 14 and the second mounting cavity 13 are separated from each other by the first mounting portion 17; the second mounting cavity 13 and the third mounting cavity 16 are connected to each other. It should be noted that the first mounting cavity 14, the second mounting cavity 13, and the third mounting cavity 16 are arranged in sequence from left to right along the length of the housing 1.

[0384] In the aforementioned air conditioner indoor unit, the heat exchanger is configured to heat the indoor air within the housing 1 to generate conditioned air. The heat exchanger is installed within the heat exchange air duct. It should be noted that the heat exchanger is located near the housing air inlet 11. It should also be noted that the conditioned air can be cold air, hot air, or even room temperature air.

[0385] In the above-described air conditioner indoor unit, as shown in Figures 98 and 99, 102, and 103, the drive motor 5 is configured to drive the first fan 9 and the second fan 4. The drive motor 5 is mounted within the second mounting cavity 13. In this embodiment, the drive motor 5 is a dual-shaft motor. As shown in Figure 103, the drive motor 5 has a first motor shaft 51 and a second motor shaft 52. The first motor shaft 51 is connected to the second fan 4, and the second motor shaft 52 is connected to the first fan 9, thereby driving the first fan 9 and the second fan 4 to rotate synchronously.

[0386] In the aforementioned air conditioning indoor unit, as shown in Figures 98 and 99, and Figures 101 and 102, the second fan 4 is configured to draw indoor air into the interior of the housing 1. After heat exchange in the heat exchanger to form conditioned air, the conditioned air is then directed into the interior of the room through the housing air outlet 15 to meet the user's cooling or heating needs. The second fan 4 is mounted in the first mounting cavity 14 and is located on the side of the heat exchanger facing away from the housing air inlet 11. A support shaft 41 is provided at the end of the second fan 4 facing away from the drive motor 5. This support shaft 41 is connected to a bearing 7 to support the rotation of the second fan 4. It should be noted that the second fan 4 is a cross-flow fan.

[0387] In some embodiments, the second fan 4 extends along the length direction of the casing 1, and a fan sleeve 42 is provided at one end of the second fan 4 connected to the drive motor 5. The fan sleeve 42 is provided with a connecting hole, and the rotating shaft of the drive motor 5 extends into the connecting hole to connect the drive motor 5 to the second fan 4.

[0388] In the above-mentioned air-conditioning indoor unit, the bearing 7 is sleeved on the outer periphery of the support shaft 41 and is configured to support the rotation of the support shaft 41. The bearing 7 is provided with a bearing cavity 714 for the support shaft 41 to pass through, and the support shaft 41 is provided in the bearing cavity 714, so that the bearing 7 provides support for the rotation of the support shaft 41. For example, as shown in Figures 104 to 106, the bearing 7 includes a bearing sleeve 71 and a bearing ball 72, and the bearing cavity 714 is provided through the bearing sleeve 71 and the bearing ball 72. The support shaft 41 is provided through the bearing cavity 714. It should be noted that an installation space 715 is provided in the bearing sleeve 71, and the installation space 715 is connected to the bearing cavity 714 and is provided near the second fan 4. The bearing ball 72 is provided in the installation space 715 and is connected to the support shaft 41.

[0389] In some embodiments, a reinforcement portion 716 is provided at the end of the bearing sleeve 71 away from the second fan 4. The bearing cavity 714 extends axially along the support shaft 41 to the reinforcement portion 716 to increase the contact area between the support shaft 41 and the bearing sleeve 71. It should be noted that the end of the reinforcement portion 716 away from the bearing sleeve 71 is a closed end.

[0390] In the above-mentioned air conditioner indoor unit, the bearing seat 8 is used to mount the bearing 7 so that the bearing 7 can better support the support shaft 41; the bearing seat 8 is disposed outside the bearing 7 and mounted on the housing 1. For example, as shown in Figures 107 to 110, a first through-cavity 84 is provided within the bearing seat 8. The first through-cavity 84 is used to mount the bearing 7. The bearing 7 is disposed within the first through-cavity 84, and the outer periphery of the bearing sleeve 71 is tightly fitted with the inner wall of the first through-cavity 84, thereby connecting the bearing 7 to the bearing seat 8. The first through-cavity 84 extends along the length of the housing 1, allowing the support shaft 41 to extend into the first through-cavity 84, connect to the bearing 7, and pass through the first through-cavity 84 to connect to the second fan 4. It should be noted that a connecting platform is provided within the first through-cavity 84, and the connecting platform is located within the first through-cavity 84 and arranged along the circumference of the first through-cavity 84. The bearing sleeve 71 is provided with a connecting block 711, which is located on the outer periphery of the bearing sleeve 71 and arranged along the circumference of the bearing sleeve 71. The connecting block 711 abuts against the connecting platform, so that the bearing sleeve 71 is pressed and assembled with the inner wall of the first through-cavity 84, thereby fixedly connecting the bearing 7 to the bearing seat 8. It should also be noted that the connecting platform is connected to the inner wall of the first through-cavity 84, and the inner diameter of the connecting platform gradually decreases along the axial direction of the first through-cavity 84 as it approaches the second fan 4. The closer the bearing sleeve 71 is to the second fan 4, the greater the mutual extrusion force between the bearing sleeve 71 and the inner wall of the first through-cavity 84, thereby facilitating the connection of the bearing 7 to the bearing seat 8.

[0391] In some embodiments, the bearing seat 8 is provided with a stopper 85 , which is located at the opening of the first through cavity 84 toward the second fan 4 . The stopper 85 cooperates with the bearing sleeve 71 to prevent the bearing sleeve 71 from separating from the first through cavity 84 .

[0392] In some embodiments, the bearing housing 8 is provided with a positioning block 86, which is located within the first through cavity 84. The bearing sleeve 71 is provided with a positioning space 712 corresponding to the positioning block 86, and the positioning space 712 is located on the outer periphery of the bearing sleeve 71. The positioning block 86 is disposed within the positioning space 712 to locate the installation position of the bearing 7 within the first through cavity 84.

[0393] In some embodiments, the bearing sleeve 71 is provided with a buffer rib 713 on its outer periphery. The buffer rib 713 is formed by a protrusion on the outer surface of the bearing sleeve 71 and abuts against the inner wall of the first through cavity 84. The buffer rib 713 not only facilitates the installation of the bearing sleeve 71 within the first through cavity 84, but also increases the firmness of the abutment between the bearing sleeve 71 and the inner wall of the first through cavity 84, and also protects the portion of the bearing sleeve 71 that contacts the inner wall of the first through cavity 84.

[0394] In some embodiments, the bearing seat 8 is provided with an extension portion 83, and the second mounting portion 18 is provided with an accommodating cavity, the opening of which is arranged toward the top of the housing 1. The extension portion 83 is disposed within the accommodating cavity to locate the connection between the bearing seat 8 and the second mounting portion 18. It should be noted that the bearing seat 8 is also provided with a clamping portion 82, which is located on the extension portion 83; the second mounting portion 18 is provided with a clamping space, which is in communication with the accommodating cavity, and the clamping portion 82 is disposed within the clamping space to securely connect the bearing seat 8 to the second mounting portion 18, thereby mounting the bearing seat 8 within the housing 1.

[0395] In some embodiments, as shown in FIG107 , the bearing seat 8 is further provided with a support portion 81, and a support platform is further provided in the accommodating cavity. The support portion 81 is located on top of the support platform to support the bearing seat 8. It should be noted that the bearing seat 8 may be provided with two support portions 81, the two support portions 81 being symmetrically arranged along the thickness direction of the housing 1; and the accommodating cavity may be provided with two support platforms, the two support platforms being arranged in a one-to-one correspondence with the two support portions 81.

[0396] In the aforementioned air conditioning indoor unit, as shown in Figures 111 to 113 , the fresh air module is configured to draw outdoor fresh air into the indoor space. The fresh air module includes a ventilation volute 3 and a first fan 9 . The ventilation volute 3 is mounted in the third mounting cavity 16 . A fresh air duct is defined within the ventilation volute 3 . The first fan 9 is mounted within the fresh air duct. The fresh air duct is provided with a second air inlet 37 and a second air outlet 351 . The second air inlet 37 communicates with the outdoors, and the second air outlet 351 communicates with the vent 12 . When the first fan 9 operates, outdoor fresh air is drawn into the fresh air duct through the second air inlet 37 , passes through the second air outlet 351 , and flows into the indoor space through the vent 12 . The first fan 9 is provided with a fan shaft 96 , which is connected to the second motor shaft 52 via a coupling 6 , forming a second connecting shaft. It should be noted that the fresh air duct is provided with a reserved hole 312 so that the fan shaft 96 passes through the reserved hole 312 and is arranged outside the fresh air duct and connected to the second motor shaft 52, thereby connecting the first fan 9 to the drive motor 5.

[0397] As shown in Figure 113, the first fan 9 includes a hub 91 and a plurality of blades 92. The blades 92 are spaced apart and fixedly connected to the hub 91 along the circumference of the hub 91. The blades 92 are distributed along the circumference of the hub 91 to form a circular base. The blades 92 surround the hub 91 to form a fan cavity. The fan cavity is located in the middle of the circular base and on the side where the blades 92 are close to each other. The blades 92 are connected to form a single body by a connecting portion 93 on the side facing away from the cavity, allowing the blades 92 to operate synchronously and achieve optimal overall performance. Gaps exist between adjacent blades 92, and the gaps between adjacent blades 92 communicate with the fan cavity to form a fan outlet. The fan outlet is connected to the fan cavity and the second air outlet 351, allowing airflow in the fan cavity to flow to the second air outlet 351. The fan cavity is also provided with a fan air inlet, which is arranged toward the first grille 322. The indoor air in the fresh air cavity 321 enters the fan cavity from the fan air inlet, and then flows out of the fan cavity through the fan air outlet. The ends of the plurality of blades 92 facing away from the fan air inlet are connected to a hub 91 and are connected into one body through the hub 91 to increase the firmness of the connection between the plurality of blades 92. The connecting portion 93 is located at the end of the blade 92 facing the air inlet. The connecting portion 93 and the hub 91 are respectively arranged at both ends of the blade 92 to ensure the firmness of the connection between the plurality of blades 92, so that the blades 92 as a whole can achieve the maximum working effect. The connecting portion 93 is only connected to the side of the plurality of blades 92 facing away from the cavity. The purpose is to prevent the area of ​​the connecting portion 93 from being too large and affecting the working effect of the blade 92. Moreover, the connecting portion 93 is formed by injection molding as a whole with the blade 92. Reducing the area of ​​the connecting portion 93 can reduce the overall weight of the first fan 9. It should be noted that the side of the hub 91 facing away from the blades 92 is disposed toward the first volute 31, and a certain gap is left between the hub 91 and the first volute 31 along the length direction of the casing 1 to ensure the reliability of the operation of the first fan 9. It should also be noted that the first fan 9 is a centrifugal fan.

[0398] In some embodiments, the first fan 9 is provided with a connecting cavity 94 , a fan shaft 96 is provided in the connecting cavity 94 , and a fixing portion 95 is provided in the connecting cavity 94 , and one end of the fan shaft 96 away from the support shaft 41 is connected to the fixing portion 95 .

[0399] In other embodiments, the fixing portion 95 and the inner wall of the connecting cavity 94 opening toward the connecting cavity 94 jointly define a receiving cavity, and the end of the fan shaft 96 away from the support shaft 41 extends into the receiving cavity to increase the strength of the connection between the fan shaft 96 and the fixing portion 95.

[0400] In some embodiments, the connecting cavity 94 is formed by the middle portion of the hub 91 protruding in a direction away from the reserved hole 312 , and the opening of the connecting cavity 94 is arranged toward the reserved hole 312 .

[0401] As shown in Figures 111 to 114, the ventilation volute 3 includes a first volute 31, a second volute 32, and a ventilation housing 33. The first volute 31 and the second volute 32 are arranged opposite each other and together form a fresh air chamber 321. The first fan 9 is installed in the fresh air chamber 321. The ventilation housing 33 and the second volute 32 are arranged opposite each other on the side facing away from the first volute 31 to together form a purification chamber 331. The second volute 32 is provided with a first grille 322, which is located at the connection between the purification chamber 331 and the fresh air chamber 321, so that the purification chamber 331 and the fresh air chamber 321 are connected to each other. The purification chamber 331 is provided with a purification module 34 to purify the outdoor fresh air flowing into the purification chamber 331. The second air inlet 37 is opened in the purification chamber 331, and the second air outlet 351 is opened in the fresh air cavity 321, so that the purification module 34 purifies the outdoor fresh air entering the purification chamber 331 through the second air inlet 37, and the air in the purification chamber 331 that has been purified by the purification module 34 passes through the first grille 322 into the fresh air cavity 321, and flows into the room through the vent 12 through the second air outlet 351. It should be noted that the fresh air cavity 321 and the purification chamber 331 together form a fresh air duct. It should also be noted that the reserved hole 312 is opened in the first volute 31, and the opening of the reserved hole 312 is set toward the drive motor 5, and the reserved hole 312 is connected to the fresh air cavity 321.

[0402] In some embodiments, as shown in Figure 118, a constraint portion 311 is provided on the side of the first volute 31 facing away from the fresh air chamber 321, and the constraint portion 311 defines a constraint chamber 3111. One end of the coupling 6 connected to the fan shaft 96 is provided in the constraint chamber 3111 to constrain the position of the coupling 6.

[0403] In some embodiments, the purification module 34 includes a purification frame and a filter. The filter is disposed on the purification frame and is configured to filter and purify the outdoor fresh air to prevent impurities and flocculent matter contained in the outdoor fresh air from entering the room. It should be noted that the purification chamber 331 is provided with a socket so that the purification module 34 can be inserted into the purification chamber 331 through the socket, thereby enabling installation of the purification module 34. When the purification module 34 needs to be removed, the purification module 34 can be removed from the socket. By detachably installing the purification module 34 in the purification chamber 331, it is convenient for the user to disassemble, clean, and replace the filter. In this embodiment, the removal and installation of the purification module 34 are simple and easy to operate.

[0404] In some embodiments, the ventilation volute 3 is provided with a guide member 35 connected to the first and second volutes 31, 31. The guide member 35 defines a passage communicating with the fresh air cavity 321, so that outdoor fresh air in the fresh air cavity 321 flows through the passage within the guide member 35 and into the indoor space through the vent 12. It should be noted that the second air outlet 351 is located at the end of the guide member 35 away from the ventilation volute 3 and is disposed toward the vent 12, so that the passage within the guide member 35 communicates with the vent 12.

[0405] Since the driving motor 5 drives the second fan 4 and the first fan 9 to operate simultaneously, the first fan 9 cannot be stopped independently, resulting in the inability to turn off the fresh air function when the air conditioner indoor unit is operating. Therefore, the air conditioner indoor unit is provided with a switch assembly 36 at the second air inlet 37. The switch assembly 36 is used to open or close the second air inlet 37 to control whether outdoor fresh air is introduced into the purification chamber 331, thereby controlling the on and off of the fresh air function. When the air conditioner indoor unit is operating, if it is necessary to turn off the fresh air function, closing the second air inlet 37 can prevent outdoor fresh air from being introduced into the purification chamber 331, thereby preventing outdoor fresh air from flowing into the room through the second air outlet 351; when it is necessary to turn on the fresh air function, opening the second air inlet 37 can allow outdoor fresh air to be introduced into the purification chamber 331 through the second air inlet 37, thereby allowing outdoor fresh air to flow into the room through the second air outlet 351. It should be noted that closing the second air inlet 37 by the switch assembly 36 can also prevent fresh air from flowing back into the room when the air conditioner indoor unit is turned off, thereby reducing indoor air noise and wind sensation when the fresh air function is not turned on, and improving the use effect of the air conditioner.

[0406] For example, as shown in Figure 112, the switch assembly 36 includes a baffle 361, a baffle motor 363, a gear, and a rack 362. The baffle 361 is positioned at the second air outlet 351 in an openable and closable manner. The baffle motor 363 is mounted on the ventilation housing 33, and a gear is connected to the rotating shaft of the baffle motor 363. The baffle 361 is provided with a rack 362, which meshes with the gear. When the fresh air function is enabled, the baffle motor 363 drives the gear to move the rack 362, which in turn drives the baffle 361 to move linearly, opening the second air inlet 37 and allowing outdoor fresh air to enter the room. When the fresh air function is disabled, the baffle motor 363 drives the gear to move the rack 362, causing the baffle 361 to move linearly, closing the second air inlet 37 and preventing outdoor fresh air from entering the room. It should be noted that closing the second air inlet 37 by the baffle 361 can also prevent fresh air from flowing back into the room when the air conditioner indoor unit is turned off, reducing the indoor air noise and wind feeling when the fresh air function is not turned on, and improving the use effect of the air conditioner.

[0407] The first fan 9 inevitably generates noise and vibration when it rotates. The first fan 9 is installed in the fresh air chamber 321 in the ventilation volute 3. Therefore, the ventilation volute 3 can reduce the noise transmitted into the room. Since the ventilation volute 3 is a split structure, the fresh air chamber 321 is defined by the first volute 31 and the second volute 32 spliced ​​together, and a first splicing seam is formed at the splicing of the first volute 31 and the second volute 32. In some embodiments, the gap of the first splicing seam is large, resulting in the noise in the fresh air chamber 321 easily leaking into the room through the first splicing seam. At the same time, the outdoor fresh air flows into the room through the fresh air chamber 321. Due to the existence of the first splicing seam, the fresh air in the fresh air chamber 321 is also easily leaked into the room through the first splicing seam. Although the ventilation volute 3 is designed as a split structure, the first fan can be installed in the fresh air chamber 321 and it is also convenient for production and manufacturing, the split ventilation volute 3 not only easily causes a large amount of noise to be transmitted into the room when the air-conditioning indoor unit is working, but also introduces fresh air leakage in the fresh air chamber 321, reducing the amount of fresh air introduced into the room. In view of this, the above-mentioned air-conditioning indoor unit is provided with a first connection part 313 on the first volute 31 and a second connection part 323 on the side of the second volute 32 facing the first volute 31, and the first connection part 313 and the second connection part 323 are connected to each other and jointly define a first transition chamber 38 to seal the first splicing seam, thereby preventing at least one of the fresh air or noise in the fresh air chamber 321 from easily leaking into the room from the first splicing seam.

[0408] For example, as shown in Figures 115 and 116, and Figures 118 to 120, the first connection portion 313 is provided on the side of the first volute 31 facing the second volute 32 and is arranged along the outer edge of the first volute 31, and the second connection portion 323 is provided on the side of the second volute 32 facing the first volute 31 and is arranged along the outer edge of the second volute 32. The second connection portion 323 and the first connection portion 313 are interconnected and jointly define a first transition chamber 38. The first transition chamber 38 is connected to the first splicing seam and extends along the trajectory of the first splicing seam to seal the first splicing seam. When at least one of the fresh air or noise in the fresh air chamber 321 leaks from the first splicing seam, at least one of the fresh air or noise enters the first transition chamber 38 and is accommodated in the first transition chamber 38, thereby preventing at least one of the fresh air or noise from entering the room.

[0409] In some embodiments, the first connecting portion 313 defines a first cavity 3131 that opens toward the second connecting portion 323, such that the cross-section of the first connecting portion 313 is U-shaped. The second connecting portion 323 extends into the first cavity 3131, closing the opening of the first cavity 3131. Thus, the first connecting portion 313 and the second connecting portion 323 together define a closed first transition cavity 38.

[0410] In other embodiments, the second connecting portion 323 defines a second cavity 3231 that opens toward the first connecting portion 313, such that the cross-section of the second connecting portion 323 also has a U-shape. The second cavity 3231 is located within and communicates with the first cavity 3131, thereby connecting the first cavity 3131 and the second cavity 3231 to form a closed first transition cavity 38.

[0411] In some other embodiments, the first connecting portion 313 extends into the second cavity 3231 , so that the first connecting portion 313 and the second connecting portion 323 jointly define a closed first transition cavity 38 .

[0412] In other embodiments, the first connection portion 313 and the second connection portion 323 are respectively located outside the fresh air cavity 321 , so that the first transition cavity 38 is located outside the fresh air cavity 321 .

[0413] It should be noted that although the first transition cavity 38 is formed by the first connection part 313 and the second connection part 323 being connected to each other, the connection seam formed by the first connection part 313 and the second connection part 323 and the first splicing seam are not arranged in the same vertical plane. Therefore, the first transition cavity 38 can effectively seal the first splicing seam.

[0414] Since the purification chamber 331 is connected to the fresh air chamber 321 through the first grille 322, at least one of the outdoor fresh air or noise in the fresh air chamber 321 may also enter the purification chamber 331, and the purification chamber 331 is formed by the second volute 32 and the ventilation shell 33 being spliced ​​together and jointly defined. Therefore, a second splicing seam is formed at the splicing of the second volute 32 and the ventilation shell 33, and the gap of the second splicing seam is also large, which causes at least one of the fresh air or noise in the purification chamber 331 to easily leak from the second splicing seam. The above-mentioned air-conditioning indoor unit is configured by providing a third connecting portion 324 on the side of the second volute 32 facing the ventilation shell 33 and a fourth connecting portion 332 on the side of the ventilation shell 33 facing the second volute 32, and utilizing the third connecting portion 324 and the fourth connecting portion 332 to be connected to each other and jointly defined to form a second transition chamber 39 to seal the second splicing seam, thereby preventing at least one of the fresh air or noise in the purification chamber 331 from easily leaking into the room from the second splicing seam.

[0415] For example, as shown in Figures 115, 117, 121 and 122, the third connection part 324 is provided on the side of the second volute 32 facing the ventilation shell 33 and is arranged along the outer edge of the second volute 32, and the fourth connection part 332 is provided on the side of the ventilation shell 33 facing the second volute 32 and is arranged along the outer edge of the ventilation shell 33. The fourth connection part 332 and the third connection part 324 are interconnected and jointly define a second transition chamber 39. The second transition chamber 39 is connected to the second splicing seam and extends along the trajectory of the second splicing seam to seal the second splicing seam. When at least one of the fresh air or noise in the purification chamber 331 leaks from the second splicing seam, at least one of the fresh air or noise enters the second transition chamber 39 and is accommodated in the second transition chamber 39, thereby preventing at least one of the fresh air or noise from entering the room.

[0416] In some embodiments, the third connecting portion 324 defines a third cavity 3241 that opens toward the fourth connecting portion 332, such that the cross-section of the third connecting portion 324 is U-shaped. The fourth connecting portion 332 extends into the third cavity 3241, closing the opening of the third cavity 3241. Thus, the third connecting portion 324 and the fourth connecting portion 332 jointly define a closed second transition cavity 39.

[0417] In other embodiments, the fourth connecting portion 332 defines a fourth cavity 3321 that opens toward the third connecting portion 324, such that the cross-section of the fourth connecting portion 332 also has a U-shape. The fourth cavity 3321 is located within and communicates with the third cavity 3241, thereby connecting the third cavity 3241 and the fourth cavity 3321 to form a closed second transition cavity 39.

[0418] In some other embodiments, the third connection portion 324 extends into the fourth cavity 3321 , so that the third connection portion 324 and the fourth connection portion 332 jointly define a closed second transition cavity 39 .

[0419] In other embodiments, the third connecting portion 324 and the fourth connecting portion 332 are respectively located outside the purification chamber 331 , so that the second transition chamber 39 is located outside the purification chamber 331 .

[0420] It should be noted that although the second transition chamber 39 is formed by the third connection part 324 and the fourth connection part 332 being connected to each other, the connection seam formed by the third connection part 324 and the fourth connection part 332 is not arranged in the same vertical plane as the second splicing seam. Therefore, the second transition chamber 39 can effectively seal the second splicing seam.

[0421] The working principle of the above-mentioned air-conditioning indoor unit is as follows: the driving motor 5 drives the second fan 4 and the first fan 9 to rotate synchronously, and the outdoor air is introduced into the purification chamber 331 through the second air inlet 37 through the operation of the first fan 9. After purification treatment by the purification module 34, it enters the fresh air cavity 321 through the first grille 322. Most of the outdoor fresh air in the fresh air cavity 321 passes through the second air outlet 351 and flows into the room through the vent 12; some outdoor fresh air may leak from the first splicing seam into the first transition cavity 38; the noise generated when the first fan 9 is working will also leak from the first splicing seam into the first transition cavity 38. After at least one of the outdoor fresh air or noise enters the first transition chamber 38, it is contained by the first transition chamber 38. Since there is no power within the first transition chamber 38 to drive at least one of the outdoor fresh air or noise to flow, the at least one of the outdoor fresh air or noise moves slowly within the first transition chamber 38. Therefore, the at least one of the outdoor fresh air or noise within the first transition chamber 38 is unlikely to leak secondary through the joint formed by the first connecting portion 313 and the second connecting portion 323. Furthermore, the joint formed by the first connecting portion 313 and the second connecting portion 323 does not lie in the same plane, and the joint formed by the first connecting portion 313 and the second connecting portion 323 has a complex trajectory, which also makes it unlikely for the at least one of the outdoor fresh air or noise to leak. Similarly, the at least one of the outdoor fresh air or noise within the purification chamber 331 will leak through the second joint into the second transition chamber 39, where it will be contained by the second transition chamber 39 and unlikely to leak.

[0422] The air conditioning indoor unit is provided with a first connecting portion 313 on the first volute 31 and a second connecting portion 323 on the second volute 32. The first connecting portion 313 and the second connecting portion 323 jointly define a first transition chamber 38. The first transition chamber 38 seals a first joint formed by the first and second volutes 31 and 32. This allows at least one of noise or fresh air leaking from the fresh air chamber 321 through the first joint to enter the first transition chamber 38. The leaked noise or at least one of the fresh air is contained in the first transition chamber 38, thereby preventing the transmission of the noise or at least one of the fresh air into the room. The air conditioning indoor unit not only reduces noise transmitted into the room when the first fan is in operation, but also allows a larger amount of fresh air to flow into the room.

[0423] Those skilled in the art will understand that the scope of the present disclosure is not limited to the above specific embodiments, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the present disclosure. The scope of the present disclosure is limited by the appended claims.

Claims

1. An air conditioner, comprising: A shell, wherein a first inner cavity and a second inner cavity are arranged inside the shell along the length direction; a first air inlet is opened at the top of the shell, and a first air outlet is opened at the front bottom of the shell; an indoor heat exchanger, disposed in the first inner cavity, the indoor heat exchanger being configured to perform heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow; a second fan, arranged in the first inner cavity and located below the indoor heat exchanger; indoor airflow enters the housing through the first air inlet under the action of the second fan, and is output to the room through the first air outlet after being heat exchanged by the indoor heat exchanger; A ventilation volute is disposed in the second inner cavity, and a second air inlet and a second air outlet are provided on the ventilation volute; A first fan is disposed in the ventilation volute; a driving motor, configured to drive the second fan and the first fan to rotate synchronously; A first air guide plate, disposed at the first air outlet, and the first air guide plate is disposed along the length direction of the first air outlet; A second air guide plate is disposed between the first air guide plate and the indoor heat exchanger, the second air guide plate being disposed along the length direction of the first air outlet; the second air outlet is close to the first air inlet; a baffle, disposed at the second air inlet, the baffle being configured to open or close the second air inlet; as well as A controller, the controller being configured to: When a control signal is received to control the air conditioner to enter a fresh air mode, the first air guide plate is controlled to flip from an initial position to a first preset angle, and the second air guide plate is controlled to flip from an initial position to a second preset angle; the second preset angle is greater than the first preset angle; When receiving a control signal to control the air conditioner to exit the fresh air mode, controlling the drive motor to decelerate and stop, and after waiting for the drive motor to completely stop, controlling the baffle to close the second air inlet; The airflow passing through the first air outlet is guided to the first air guide plate by the second air guide plate, and the first air guide plate guides the airflow to the top of the shell.

2. The air conditioner according to claim 1, wherein: The value of the second preset angle is twice the value of the first preset angle.

3. The air conditioner according to claim 1, wherein: The controller is configured to: when controlling the air conditioner to enter the fresh air mode, control the driving motor to drive the second fan and the first fan to rotate synchronously, and control the baffle to open the second air inlet.

4. The air conditioner according to claim 1, wherein: When the first air guide plate is in the initial position, the first air outlet is closed by the first air guide plate.

5. The air conditioner according to claim 1, further comprising an outdoor temperature sensor configured to detect an outdoor temperature; wherein The controller is configured to: when receiving a control signal to control the air conditioner to enter the fresh air mode, control the outdoor temperature sensor to detect the outdoor temperature and determine whether the outdoor temperature is greater than a preset temperature value; When the outdoor temperature is greater than a preset temperature value, the drive motor is turned on, the baffle is controlled to open the second air inlet, the first air guide plate is controlled to flip from an initial position to a first preset angle, and the second air guide plate is controlled to flip from an initial position to a second preset angle.

6. An air conditioner, comprising: A shell, wherein a first inner cavity and a second inner cavity are arranged inside the shell along the length direction; a first air inlet is opened at the top of the shell, and a first air outlet is opened at the front bottom of the shell; an indoor heat exchanger, disposed in the first inner cavity, the indoor heat exchanger being configured to perform heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow; a second fan, arranged in the first inner cavity and located below the indoor heat exchanger; indoor airflow enters the housing through the first air inlet under the action of the second fan, and is output to the room through the first air outlet after being heat exchanged by the indoor heat exchanger; A ventilation volute, the ventilation volute is arranged in the second inner cavity, and a second air inlet and a second air outlet are opened on the ventilation volute; A first fan is disposed in the ventilation volute; a driving motor configured to drive the second fan and the first fan to rotate synchronously; A first air guide plate, disposed at the first air outlet, and the first air guide plate is disposed along the length direction of the first air outlet; A first motor is disposed at the first air outlet, and the first motor is configured to drive the first air guide plate to flip; A second air guide plate is disposed between the first air guide plate and the indoor heat exchanger, and the second air guide plate is disposed along the length direction of the first air outlet; A second motor is disposed at the first air outlet, and the second motor is configured to drive the second air guide plate to flip; the second air outlet is close to the first air inlet; a baffle, disposed at the second air inlet, the baffle being configured to open or close the second air inlet; as well as A controller, the controller being configured to: When the air conditioner is controlled to enter a fresh air mode, the first motor is controlled to rotate by a third preset number of steps, and the second motor is controlled to rotate by a fourth preset number of steps; the fourth preset number of steps is greater than the third preset number of steps; When receiving a control signal to control the air conditioner to exit the fresh air mode, controlling the drive motor to decelerate and stop, and after waiting for the drive motor to completely stop, controlling the baffle to close the second air inlet; The airflow passing through the first air outlet is guided to the first air guide plate by the second air guide plate, and the first air guide plate guides the airflow to the top of the shell.

7. The air conditioner according to claim 6, wherein: The value of the fourth preset number of steps is twice the value of the third preset number of steps.

8. The air conditioner according to claim 6, wherein: The controller is configured to: when controlling the air conditioner to enter the fresh air mode, control the first motor to rotate a third preset number of steps, and after a preset time, control the second motor to rotate a fourth preset number of steps.

9. The air conditioner according to claim 6, wherein: When the first motor is in an initial state, the first air outlet is closed by the first air guide plate.

10. The air conditioner according to claim 6, further comprising an outdoor temperature sensor, wherein the outdoor temperature sensor is configured to detect an outdoor temperature; The controller is configured to: when receiving a control signal to control the air conditioner to enter the fresh air mode, control the outdoor temperature sensor to detect the outdoor temperature and determine whether the outdoor temperature is greater than a preset temperature value; When the outdoor temperature is greater than a preset temperature value, the drive motor is turned on, the baffle is controlled to open the second air inlet, the first motor is controlled to twist a third preset number of steps from an initial state, and the second motor is controlled to twist a fourth preset number of steps from an initial state.

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