Wall-mounted air conditioner indoor unit

Abstract

A wall-mounted air conditioner indoor unit, relating to the technical field of air conditioners. The wall-mounted air conditioner indoor unit comprises: a housing (1), the housing (1) comprising a base (11); an indoor heat exchanger (2) and a cross-flow fan (3), which are arranged on the base (11), wherein the cross-flow fan (3) comprises an end cover (31); an outer ring member (4) fixedly connected to the end cover (31); an outer rotor motor (5), comprising: a stator (51), and a rotor (52) being spaced apart from and arranged around the exterior of the stator (51) and nested inside the outer ring member (4); a motor support (6) connected to the base (11) and used for mounting the stator (51); a first connecting rib (41) annularly arranged along an outer ring of the outer ring member (4), the first connecting rib (41) being bent, and a first accommodating portion (42) having a first opening being formed between the first connecting rib (41) and the outer ring member (4); an annular rib (61) formed at the end of the motor support (6) close to the cross-flow fan (3), a free end of the annular rib (61) extending into the first accommodating portion (42), such that a labyrinth structure is formed between the motor support (6) and the first accommodating portion (42), thereby improving the safety protection level of the outer rotor motor (5).

Description

Ceiling-mounted air conditioner indoor unit

[0001] This application claims priority to Chinese Patent Application No. 202421486179.1, filed on June 27, 2024; Chinese Patent Application No. 202421488373.3, filed on June 27, 2024; Chinese Patent Application No. 202410843056.7, filed on June 27, 2024; the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of air conditioners, and in particular to a ceiling-mounted air conditioner indoor unit. BACKGROUND

[0003] In related technologies, the driving motor of a ceiling-mounted air conditioner indoor unit can adopt an outer rotor motor, wherein the stator of the outer rotor motor can be installed on the base through a motor support, and the rotor of the outer rotor motor is fixed on a cross-flow fan of the ceiling-mounted air conditioner indoor unit, but there is a lack of simple and effective dustproof and waterproof structure between the cross-flow fan and the motor support. Mosquitoes, dust, lint and other impurities can easily enter the motor through the rotating gap between the motor support and the cross-flow fan, block the rotating gap between the stator and the rotor, affect rotation, and emit noise, or condensed water can easily enter the motor through the rotating gap between the motor support and the cross-flow fan, causing short circuit, and there is a safety hazard. SUMMARY

[0004] In a first aspect, in some embodiments, the present application provides a ceiling-mounted air conditioner indoor unit, comprising:

[0005] a housing, a top and a front side bottom of which are respectively provided with an air conditioner air inlet and an air conditioner air outlet, the housing comprising a base;

[0006] an indoor heat exchanger, arranged on the base, for heat exchange of air in the housing;

[0007] a cross-flow fan, arranged on the base and located below the indoor heat exchanger; indoor air flows into the housing through the air conditioner air inlet under the action of the cross-flow fan, and is output to the indoor through the air conditioner air outlet after heat exchange by the indoor heat exchanger, the cross-flow fan comprising an end cover;

[0008] an outer ring, one end of which is fixedly connected to the end cover;

[0009] an outer rotor motor, comprising:

[0010] a rotor, nested in the inner part of the outer ring;

[0011] A stator is sleeved outside the rotor, and the stator is arranged in a spaced manner with the rotor.

[0012] A motor support is connected to the base, and used for mounting the stator.

[0013] A first connecting rib is arranged in a ring shape along the outer ring of the outer ring member, the first connecting rib is arranged in a bent manner, and a first accommodating part with a first opening is formed between the first connecting rib and the outer ring member.

[0014] A ring-shaped rib is formed at one end of the motor support close to the cross-flow fan, and a free end of the ring-shaped rib penetrates through the first opening and extends into the first accommodating part.

[0015] The indoor unit of the hanging air conditioner provided by the technical scheme is characterized in that the first connecting rib is arranged in a ring shape along the outer ring of the outer ring member, the first connecting rib and the outer ring member form the first accommodating part, the ring-shaped rib formed at one end of the motor support can extend into the first accommodating part, the gap between the motor support and the outer ring member is shielded to a certain extent, a labyrinth structure is formed between the motor support and the first accommodating part, the situation that dust, impurities, mosquitoes, water vapor and the like enter the gap between the stator and the rotor is reduced or blocked, the situation that the stator and the rotor are blocked to affect rotation and generate noise is reduced or avoided, or the problem that water vapor enters the gap between the stator and the rotor to cause short circuit is reduced or avoided, the safety hazard is reduced, and the safety protection level of the outer rotor motor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is a structural schematic diagram of an indoor unit of an air conditioner according to some embodiments of the present application.

[0017] FIG. 2 is a structural schematic diagram of an air outlet of the air conditioner with a guide vane opened according to some embodiments of the present application.

[0018] FIG. 3 is a front view of the indoor unit of the air conditioner according to some embodiments of the present application.

[0019] FIG. 4 is a sectional view taken along the direction of A-A in FIG. 3.

[0020] FIG. 5 is a structural schematic diagram of an outer cover of the indoor unit of the air conditioner according to some embodiments of the present application.

[0021] FIG. 6 is a structural schematic diagram of the base and the cross-flow fan assembled according to some embodiments of the present application.

[0022] FIG. 7 is another structural schematic diagram of the base and the cross-flow fan assembled according to some embodiments of the present application.

[0023] FIG. 8 is a structural schematic diagram of the cross-flow fan according to some embodiments of the present application.

[0024] Figure 9 is an exploded view of the cross-flow fan and rotor in an air conditioning indoor unit as described in some embodiments of this application.

[0025] Figure 10 is a schematic diagram of the connection between the stator and the motor bracket in an air conditioner indoor unit as described in some embodiments of this application.

[0026] Figure 11 is a partial cross-sectional view of an indoor air conditioning unit as described in some embodiments of this application.

[0027] Figure 12 is a partial cross-sectional view of an indoor air conditioning unit as described in some embodiments of this application.

[0028] Figure 13 is a cross-sectional view of the connection between the cross-flow fan and the drive motor in an air conditioner indoor unit as described in some embodiments of this application.

[0029] Figure 14 is a partial cross-sectional view of an indoor air conditioning unit as described in some embodiments of this application.

[0030] Figure 15 is a partial cross-sectional view of an indoor air conditioning unit as described in some embodiments of this application.

[0031] Figure 16 is a schematic diagram of the structure of the external rotor motor of the air conditioner indoor unit assembled on the base as described in some embodiments of this application.

[0032] Figure 17 is a partial exploded view shown in Figure 16.

[0033] Figure 18 is a schematic diagram of the structure of the motor cover of the indoor unit of the air conditioner assembled on the base, as described in some embodiments of this application.

[0034] Figure 19 is a schematic diagram of the structure of the motor cover in the indoor unit of an air conditioner as described in some embodiments of this application.

[0035] Figure 20 is a partial cross-sectional view three of an air conditioner indoor unit described in some embodiments of this application.

[0036] Figure 21 is a partial cross-sectional view of a cross-flow fan in an indoor air conditioning unit as described in some embodiments of this application.

[0037] Figure 22 is a partial cross-sectional view four of an indoor air conditioning unit described in some embodiments of this application.

[0038] Figure 23 is a partial cross-sectional view of an indoor air conditioning unit described in some embodiments of this application.

[0039] Figure 24 is a partial cross-sectional view of an indoor air conditioning unit described in some embodiments of this application.

[0040] Figure 25 is a partial cross-sectional view (7) of an indoor air conditioning unit described in some embodiments of this application.

[0041] Figure 26 is a partial cross-sectional view of an indoor air conditioning unit described in some embodiments of this application.

[0042] Figure 27 is a cross-sectional view of an indoor air conditioning unit described in some embodiments of this application.

[0043] Figure 28 is a magnified view of a portion of point A shown in Figure 27.

[0044] Figure 29 is a magnified view of a portion of point A shown in Figure 27.

[0045] Figure 30 is a magnified view of a portion of point A shown in Figure 27.

[0046] Figure 31 is a partial cross-sectional view nine of an indoor air conditioning unit described in some embodiments of this application. Detailed Implementation

[0047] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0048] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0049] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] The terms "first" and "second" are used for description only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] In some embodiments, this disclosure provides a wall-mounted air conditioner, which may include a wall-mounted indoor unit, hereinafter referred to as the indoor unit, which may be installed indoors and configured to exchange heat with the indoor environment. The wall-mounted air conditioner may also include an outdoor unit, which may be installed outdoors and configured to carry indoor heat to the outside.

[0053] In some embodiments, referring to FIG1, the indoor unit 100 of the air conditioner may include a housing 1. The housing 1 may be installed indoors, and the housing 1 forms the overall appearance of the indoor unit 100 of the air conditioner.

[0054] In some embodiments, continuing to refer to FIG1, the housing 1 may be generally rectangular in shape. The housing 1 has a top end and a bottom end, which are opposite ends of the housing 1 in the height direction. The left side and right side of the housing 1 are opposite sides in the length direction, and the front side and rear side of the housing 1 are opposite sides in the thickness direction. The housing 1 may be disposed at the ceiling or in the upper space of an interior space, with the front side of the housing 1 facing the user and the rear side facing the wall, suitable for connection to a wall.

[0055] It should be noted that the directions described in the text are based on the direction the user faces when facing the indoor unit of the air conditioner. Specifically, the side of the indoor unit facing the user when in use is defined as the front side, and the opposite side is defined as the rear side. The left and right sides are distinguished by the direction the user faces when facing the indoor unit.

[0056] In some embodiments, referring to FIG4, a heat exchange duct 10 is formed inside the housing 1. The heat exchange duct 10 is configured to accommodate and fix various components in the indoor unit 100 of the air conditioner, which can reduce or avoid collisions between foreign objects and various components inside the housing 1, thereby improving the reliability of the indoor unit 100 of the air conditioner during transportation or installation.

[0057] In some embodiments, referring to FIG2, the housing 1 may include an air conditioning inlet 13. The air conditioning inlet 13 may be connected to the heat exchange duct 10, and the air conditioning inlet 13 serves as an inlet for external air to flow into the housing 1, allowing indoor air to enter the heat exchange duct 10 through the air conditioning inlet 13.

[0058] In some embodiments, referring to FIG2, the housing 1 may include an air conditioning outlet 14. The air conditioning outlet 14 may be connected to the heat exchange duct 10, and the air conditioning outlet 14 serves as an outlet for the heat exchange airflow within the housing 1, allowing the airflow within the heat exchange duct 10 to flow out through the air conditioning outlet 14.

[0059] In some embodiments, the air conditioner inlet 13 may be located at the top of the housing 1. The air conditioner outlet 14 may be located on the front side of the housing 1 and near the bottom of the housing 1, that is, the air conditioner outlet 14 may be located at the bottom front side of the housing 1. In this embodiment, when the indoor unit of the air conditioner is working, the indoor unit 100 takes in air from the top and exits air to the front, which is convenient for installation.

[0060] In some embodiments, the air conditioner outlet 14 can be elongated and can extend along the length of the housing 1, thereby improving the appearance quality of the air conditioner indoor unit 100.

[0061] In some embodiments, continuing to refer to FIG2, the indoor unit 100 of the air conditioner may include an air guide vane 15. The air guide vane 15 is rotatably connected to the housing 1 and may be disposed at the air outlet 14. The air guide vane 15 is configured to open or close the air outlet 14, and when the air guide vane 15 opens the air outlet 14, it is configured to guide the heat exchange airflow.

[0062] In some embodiments, referring to FIG1, the indoor unit 100 of the air conditioner may include an air inlet grille 16. The air inlet grille 16 may be disposed at the air inlet 13 of the air conditioner and is configured to filter the air to reduce or prevent larger impurities from entering the heat exchange duct 10.

[0063] In some embodiments, referring to Figures 3 and 4, the indoor unit 100 of the air conditioner may include an indoor heat exchanger 2. The indoor heat exchanger 2 may extend along the length of the housing 1 and may be disposed within the heat exchange duct 10, configured to exchange heat with the airflow within the housing 1.

[0064] In some embodiments, the indoor unit 100 of the air conditioner may include a cross-flow fan 3. The cross-flow fan 3 may be disposed in the heat exchange duct 10, and the axial direction of the cross-flow fan 3 extends along the length direction of the housing 1. It is configured to drive indoor air outside the housing 1 to enter the heat exchange duct 10 inside the housing 1 through the air conditioner air inlet 13. The cross-flow fan 3 may drive the air in the heat exchange duct 10 to flow along the air conditioner air inlet 13 toward the air conditioner air outlet 14.

[0065] In some embodiments, continuing to refer to FIG4, the cross-flow fan 3 may be located below the indoor heat exchanger 2. The indoor heat exchanger 2 may be located inside the air conditioning inlet 13. The cross-flow fan 3 may be located on the side of the indoor heat exchanger 2 away from the air conditioning inlet 13. That is, in the airflow direction within the housing 1, the cross-flow fan 3 is located downstream of the indoor heat exchanger 2.

[0066] When the indoor unit 100 of the air conditioner is running, driven by the cross-flow fan 3, indoor air can enter the heat exchange duct 10 through the air conditioner air inlet 13. The indoor air in the heat exchange duct 10 flows through the indoor heat exchanger 2 for heat exchange. The heat exchanged airflow is discharged to the outside through the air conditioner air outlet 14, thereby enabling the air conditioner to cool or heat, and play the role of regulating the indoor temperature to achieve the user's comfortable temperature.

[0067] In some embodiments, referring to Figures 6 and 7, the housing 1 may include a base 11. The base 11 may form the rear side of the indoor unit 100 of the air conditioner, and the base 11 may be adapted to be mounted on a wall or other structure that can have a certain supporting strength.

[0068] In some embodiments, referring to FIG5, the housing 1 may include an outer cover 12. The outer cover 12 may be disposed on the base 11, and a heat exchange air duct 10 is formed between the outer cover 12 and the base 11. The outer cover 12 may be generally in the shape of a cuboid frame. The rear side of the outer cover 12 is open, and the outer cover 12 is disposed on the front side of the base 11 and connected to the base 11 to form the housing 1.

[0069] In some embodiments, continuing to refer to Figure 5, both the air conditioner inlet 13 and the air conditioner outlet 14 can be formed on the outer cover 12. The indoor heat exchanger 2 and the cross-flow fan 3 are both mounted on the base 11. The outer cover 12 can be integrally formed to ensure its structural strength. Of course, in other embodiments, the outer cover 12 can be modular, meaning it can include multiple components, which are manufactured separately and then assembled together to form the outer cover 12. This design reduces the overall manufacturing difficulty of the outer cover 12.

[0070] In some embodiments, the outdoor unit of an air conditioner may include an outdoor casing. An outdoor heat exchange duct may be provided within the outdoor casing. An outdoor air inlet may be included on the outdoor casing. The outdoor air inlet may communicate with the outdoor heat exchange duct. The outdoor air inlet may be configured to introduce outdoor air into the outdoor heat exchange duct. An outdoor air outlet may be included on the outdoor casing. The outdoor air outlet may communicate with the outdoor heat exchange duct. The outdoor air outlet may be configured to exhaust air from the outdoor heat exchange duct to the outside of the outdoor heat exchange duct. The outdoor unit of the air conditioner may include an outdoor heat exchanger. The outdoor heat exchanger may be located within the outdoor heat exchange duct. The outdoor unit of the air conditioner may include an outdoor fan. The outdoor fan may be located within the outdoor heat exchange duct. The rotation of the outdoor fan causes outdoor air to enter the heat exchange duct 10 through the outdoor air inlet and exchange heat with the outdoor heat exchanger. The heated outdoor air then flows out of the outdoor heat exchange duct through the outdoor air outlet.

[0071] In some embodiments, a wall-mounted air conditioner may include a compressor. The compressor is located within an outdoor heat exchange duct. The wall-mounted air conditioner may include a throttling device. The throttling device is configured to throttle. The throttling device may be provided in either the indoor or outdoor unit of the air conditioner. The wall-mounted air conditioner performs a refrigeration cycle by using a compressor, a condenser, a throttling device, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, supplying refrigerant to conditioned and heat-exchanged air. The compressor compresses refrigerant gas at a low temperature and low pressure, discharging it at a high temperature and high pressure; 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 throttling device expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the throttling device and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves a cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the wall-mounted air conditioner can regulate the temperature of the indoor space.

[0072] In this system, one of the indoor heat exchangers and the other of the outdoor heat exchanger is a condenser and the other is an evaporator. When the indoor heat exchanger is used as a condenser, the wall-mounted air conditioner is used as a heater in heating mode. When the indoor heat exchanger is used as an evaporator, the wall-mounted air conditioner is used as a cooler in cooling mode.

[0073] In some embodiments, the wall-mounted air conditioner indoor unit 100 may include a drive motor. The drive motor may be connected to the cross-flow fan 3 to drive the cross-flow fan 3 to rotate. Referring to FIG6, the drive motor may be an external rotor motor 5, which may be located at one end of the cross-flow fan 3.

[0074] In some embodiments, referring to FIG8, the cross-flow fan 3 may include an end cover 31, which forms one end of the cross-flow fan 3. The end cover 31 is adapted to be connected to a drive motor. When the drive motor is an external rotor motor 5, the end cover 31 can be connected to the external rotor motor 5.

[0075] In some embodiments, referring to FIG8, the cross-flow fan 3 may include a shaft cover 32. The shaft cover 32 forms the other end of the cross-flow fan 3. That is, the shaft cover 32 and the end cover 31 are disposed opposite each other to form two ends in the length direction of the cross-flow fan 3.

[0076] In some embodiments, the cross-flow fan 3 may include multiple impeller sections. The multiple impeller sections are sequentially fixedly connected between the end cover 31 and the shaft cover 32.

[0077] In some embodiments, referring to Figures 5 and 9, the external rotor motor 5 may include a rotor 52. The rotor 52 may be connected to an end cover 31. Referring to Figures 10 and 11, the external rotor motor 5 may include a stator 51. The stator 51 is sleeved inside the rotor 52, and the stator 51 and rotor 52 are spaced apart.

[0078] In some embodiments, referring to FIG12, the rotor 52 is arranged around the outside of the stator 51 and connected to the end cover 31. When the external rotor motor 5 is operating, the rotor 52 can rotate relative to the stator 51.

[0079] In some embodiments, referring to FIG12, the wall-mounted air conditioner indoor unit 100 may include a first rotating shaft 53. One end of the first rotating shaft 53 may be fixedly connected to the center of the end cover 31, and the other end of the first rotating shaft 53 may be rotatably connected to the stator 51, that is, the first rotating shaft 53 may rotate relative to the center of the stator 51.

[0080] In some embodiments, the rotor 52 can be a magnetic ring, that is, the rotor 52 can be a permanent magnet.

[0081] Understandably, a bushing is provided on the end cover 31, which is adapted to be fixedly connected to the first rotating shaft 53 of the external rotor motor 5. The rotation of the first rotating shaft 53 drives the end cover 31 to rotate synchronously. A second rotating shaft is provided on the shaft cover 32, which is adapted to be connected to the bearing assembly on the base 11.

[0082] In some embodiments, the first rotating shaft 53 and the rotor 52 can be fixed to the end cover 31 by using the first rotating shaft 53 and the rotor 52 as inserts, which can be integrally molded by insert injection molding, or fixed into a whole by welding, bonding, screwing, etc. This is beneficial to improve the connection firmness of the first rotating shaft 53, the rotor 52 and the end cover 31, thereby enabling the cross-flow fan 3 to rotate reliably under the action of the external rotor motor 5, so as to improve the rotation reliability of the cross-flow fan 3 and the driving efficiency of the external rotor motor 5.

[0083] In some embodiments, referring to Figures 9 and 11, the wall-mounted air conditioner indoor unit 100 may include an outer ring 4. Referring to Figure 12, one end of the outer ring 4 is fixedly connected to the end cover 31.

[0084] In some embodiments, the rotor 52 may be nested inside the outer ring 4. That is, the rotor 52 is located between the outer ring 4 and the stator 51, which can isolate the rotor 52 from other structures. In the case of handling and installation after demolding, the risk of the rotor 52 being damaged by collisions, such as cracks or even breakage, can be reduced or prevented, which is beneficial to extending the life of the rotor 52.

[0085] In some embodiments, the outer ring 4 can be integrally formed with the end cap 31 to ensure the structural strength of the product. The outer ring 4 and the end cap 31 can be integrally injection molded, which simplifies the molding process of the relevant molds and improves the versatility of the molds.

[0086] In some embodiments, the outer ring 4 can be tightly fitted to the rotor 52, in which case the rotor 52 and the outer ring 4 are fixedly connected. The rotor 52 can also be fixedly connected to the end cover 31, which increases the effective fixing area of ​​the rotor 52, thereby improving the connection strength of the rotor 52 and facilitating the transmission of large torques, suitable for the drive of large-size cross-flow fans 3.

[0087] In some embodiments, referring to Figures 7 and 10, the wall-mounted air conditioner indoor unit 100 may include a motor bracket 6. The motor bracket 6 is connected to the base 11 for mounting the stator 51. It is understood that when the external rotor motor 5 is operating, the outer ring 4 moves relative to the motor bracket 6.

[0088] In some embodiments, the motor bracket 6 may cover the outer periphery of the stator 51, and the stator 51 is connected to the base 11 via the motor bracket 6. The connection between the motor bracket 6 and the base 11 can be by screwing, riveting, or snap-fitting; no specific limitation is made here regarding the connection method between the motor bracket 6 and the base 11.

[0089] In some embodiments, referring to FIG12, the wall-mounted air conditioner indoor unit 100 may include a first connecting rib 41. The first connecting rib 41 may be connected to the outer peripheral wall of the outer ring member 4. In some embodiments, the first connecting rib 41 may be arranged circumferentially along the outer ring of the outer ring member 4, the first connecting rib 41 is bent, and a first receiving portion 42 with a first opening is formed between the first connecting rib 41 and the outer ring member 4. The first opening faces away from the cross-flow fan 3.

[0090] In some embodiments, referring to FIG13, the wall-mounted air conditioner indoor unit 100 may include an annular rib 61. The annular rib 61 may be formed at one end of the motor bracket 6 near the cross-flow fan 3. Referring to FIG14, the free end of the annular rib 61 extends through the first opening into the first receiving portion 42 to cover the gap between the outer ring 4 and the motor bracket 6 in the radial direction of the cross-flow fan 3.

[0091] The wall-mounted air conditioner indoor unit 100 provided in this embodiment has a first connecting rib 41 arranged in a ring around the outer ring 4, forming a first receiving portion 42 between the first connecting rib 41 and the outer ring 4. The ring rib 61 formed at one end of the motor bracket 6 extends into the first receiving portion 42 to partially block the gap between the motor bracket 6 and the outer ring 4, forming a labyrinth structure between the ring rib 61 on the motor bracket 6 and the first receiving portion 42. This reduces or prevents dust, impurities, insects, water vapor, etc. from the outside of the external rotor motor 5 from entering the gap between the stator 51 and the rotor 52. This reduces or prevents blockage between the stator 51 and the rotor 52, which could affect rotation and generate noise, or reduce or prevent water vapor from entering the gap between the stator 51 and the rotor 52 and causing a short circuit. This reduces safety hazards and improves the safety protection level of the external rotor motor 5.

[0092] In some embodiments, referring to Figures 15 and 18, the first connecting rib 41 may be arranged as a straight rib. The outer rotor motor 5 may be mounted with the motor bracket 6 in the motor mounting cavity 8. A recess 74 is formed on the side wall of the motor cover 7, and the first connecting rib 41 extends radially along the outer ring 4 into the recess 74, giving the outer rotor motor 5 a labyrinthine structure.

[0093] In some embodiments, referring to Figures 16 and 17, the wall-mounted air conditioner indoor unit 100 may include a motor cover 7. The motor cover 7 is detachably connected to the base 11. Referring to Figure 18, the motor cover 7 and the base 11 together define a motor mounting cavity 8, in which the external rotor motor 5 and the motor bracket 6 are housed.

[0094] In some embodiments, referring to FIG18, a first mounting groove 111 is formed on the base 11. The first mounting groove 111 may be located at one end of the cross-flow fan 3 in the axial direction. Referring to FIG19, a second mounting groove 73 is provided on the motor cover 7. The motor cover 7 is detachably and fixedly connected to the base 11, such that the first mounting groove 111 and the second mounting groove 73 are arranged opposite each other to form a motor mounting cavity 8. In other words, the motor mounting cavity 8 can be formed by the first mounting groove 111 and the second mounting groove 73.

[0095] In some embodiments, the motor cover 7 may be connected to the front side of the base 11. The motor cover 7 is disposed on the outer peripheral wall of the outer rotor motor 5 to protect the outer rotor motor 5 from the outside, thereby improving the safety of the outer rotor motor 5. In addition, by providing the motor cover 7 to cover the outer peripheral wall of the outer rotor motor 5, and not completely enclosing the outer rotor motor 5, the amount of material used for the motor cover 7 can be reduced.

[0096] In some embodiments, the outer ring 4 is located in the motor mounting cavity 8. A recess 74 is formed on the side wall of the motor cover 7. In this embodiment, the opening of the recess 74 is close to the outer rotor motor 5 relative to the side wall of the motor cover 7. Referring to FIG15, the first connecting rib 41, which is provided with vertical straight ribs, extends radially into the recess 74 to block the radial gap between the side wall of the motor mounting cavity 8 and the outer ring 4, thereby reducing or preventing dust, impurities, moisture and insects from entering the rotational gap between the stator 51 and the rotor 52 through the gap.

[0097] The wall-mounted air conditioner indoor unit 100 provided in this embodiment fixes and protects the external rotor motor 5 by setting a motor cover 7, thereby improving the installation firmness of the external rotor motor 5; by extending the vertical first connecting rib 41 to the recess 74 to form a labyrinth structure, the situation of dust, impurities, insects, water vapor and other substances from the cross-flow fan 3 side entering the gap between the stator 51 and the rotor 52 is reduced or blocked, thereby improving the safety protection level of the external rotor motor 5.

[0098] In some embodiments, referring to FIG20, a second connecting rib 63 protrudes from the inner peripheral wall of the motor bracket 6. The second connecting rib 63 is bent, and a second receiving portion 64 with a second opening is formed between the second connecting rib 63 and the annular rib 61. The second opening faces the cross-flow fan 3. The rotor 52 and the second connecting rib 63 are spaced apart axially from each other in the cross-flow fan 3 to reduce or avoid collision between the second connecting rib 63 and the cross-flow fan 3 when the cross-flow fan 3 rotates.

[0099] In some embodiments, referring to FIG20, the free end of the outer ring 4 extends into the second receiving portion 64, such that the first receiving portion 42 and the second receiving portion 64 interweave to form a multi-level labyrinth structure, which improves the product's waterproof, dustproof, and insect-proof performance.

[0100] In some embodiments, to improve the waterproof, dustproof, and insect-proof properties of the labyrinth structure, the first receiving portion 42 and the annular rib 61, as well as the outer ring 4 and the second receiving portion 64, have overlapping areas in the radial direction of the outer rotor motor 5. The radial dimension of the overlapping area in the cross-flow fan 3 is not less than 1 mm to reduce the possibility of collisions during transportation.

[0101] In some embodiments, the rotational clearance between the rotor 52 and the stator 51 is c. Where c ≥ 1.5 mm, this is to reduce vibration and noise generated during the operation of the external rotor motor 5. In other words,

[0102] To reduce vibration and noise generated during the operation of the external rotor motor 5, the rotational clearance c can be set to be no less than the first parameter value. The first parameter value can be any value between 1.5mm and 2mm. A suitable specific parameter should be selected during the design process. For example, the first parameter value could be 1.5mm.

[0103] In some embodiments, the first receiving portion 42 is an open annular groove structure, and the wall thickness of the annular rib 61 is about 1 mm. The groove width of the first receiving portion 42 in the radial direction of the cross-flow fan 3 is set to be greater than 5 mm to ensure that the rotational clearance c between the rotor 52 and the stator 51 is ≥ 1.5 mm, thereby reducing the friction between the stator 51 and the rotor 52 when concentricity deviation occurs, and ensuring the normal use of the external rotor motor.

[0104] In some embodiments, the movement gap d between the outer ring 4 and the second connecting rib 63 in the radial direction of the cross-flow fan 3 is ≥3mm. By designing the movement gap d to be no less than 3mm, the assembly precision can be reduced, thereby facilitating assembly and improving the working stability of the outer rotor motor 5. Simultaneously, it also ensures a safe distance between the outer ring 4 and the second connecting rib 63, reducing or preventing collisions caused by axial runout during the rotation of the outer ring 4 and when the entire unit is dropped. In other words, to facilitate assembly and improve working stability, the movement gap d is set to be no less than the second parameter value. The second parameter value can be any value between 3mm and 3.5mm. A suitable specific parameter should be selected during the design process. For example, the second parameter value can be 3mm.

[0105] In some embodiments, referring to FIG21, the first connecting rib 41 may include a vertical rib 411. One end of the vertical rib 411 is connected to the outer peripheral wall of the outer ring member 4. The first connecting rib 41 may include a ring rib 412, one end of which is connected to the vertical rib 411. The ring rib 412 is arranged around the outside of the outer ring member 4, and the ring rib 412 is spaced apart from the outer ring member 4.

[0106] In some embodiments, referring to FIG22, a recess 74 is formed on the sidewall of the motor cover 7, and the recess 74 is arranged around the outside of the vertical rib 411. The vertical rib 411 extends along its own extending direction to the outside of the annular rib 412 to form an extension segment 43, which extends into the recess 74. The extension segment 43 and the recess 74 are spaced apart.

[0107] In this embodiment, a recess 74 is formed in the motor cover 7, and the extension section 43 extends into the recess 74 to form a set of labyrinth structure. This labyrinth structure is formed in conjunction with the labyrinth structure formed between the first receiving part 42 and the annular rib 61 to form a multi-level labyrinth structure, thereby improving the safety protection level of the external rotor motor 5.

[0108] It should be understood that the recess 74 can also be formed by assembling the motor cover 7 with the base 11.

[0109] In some embodiments, the rotational clearance between the extension section 43 and the sidewall of the motor housing 7 is e. e ≥ 1.5 mm. Here, the rotational clearance e is the radial movement clearance between the extension section 43 and the sidewall of the motor housing 7 in the cross-flow fan 3. During the drop of the entire unit and the rotation of the cross-flow fan 3, a rotational clearance e is required between the extension section 43 and the sidewall of the motor housing 7. The rotational clearance e cannot be too small, as this will cause a collision. To avoid collision between the extension section 43 and the motor housing 7, the rotational clearance e is set to be no less than the third parameter value. The third parameter value can be any value between 1.5 mm and 2 mm. A suitable specific parameter should be selected during the design process. For example, the third parameter value can be 1.5 mm.

[0110] In some embodiments, referring to FIG22, a first baffle 71 is provided on the side wall of the motor cover 7. In this embodiment, the first baffle 71 and the side wall of the motor cover 7 form a recess 74. The first baffle 71 forms the side wall of the recess 74, and the first baffle 71 is located on the side of the extension 43 near the cross-flow fan 3.

[0111] In some embodiments, referring to FIG25, the distance between the extension 43 (or the first connecting rib 41 with straight ribs) and the first baffle 71 in the axial direction of the cross-flow fan 3 is L3. Referring to FIG24, the end of the cross-flow fan 3 away from the external rotor motor 5 has a shaft cover 32, and the distance between the shaft cover 32 and the base 11 is L4, where L3 ≥ L4.

[0112] In some embodiments, L4 can be 4.5mm or 4mm. In order to reduce or prevent the thermal expansion and contraction of the base and fan during the air conditioning heating and cooling process, as well as the accumulation of dimensional tolerances during the mass production of the product, friction may occur between the side of the fan and the bearing or the side of the base, resulting in noise.

[0113] In some embodiments, a shock-absorbing support rubber may be provided at position L4. This support rubber may be mounted on the base 11. When L3 is set to be greater than or equal to L4, causing the entire indoor unit 100 of the wall-mounted air conditioner to fall and the cross-flow fan 3 to lurch away from the external rotor motor 5, the cross-flow fan 3 first contacts the support rubber on the base 11 to absorb shock, reducing the likelihood of the extension section 43 breaking upon impact with the first baffle 71, thereby reducing or preventing noise generated inside the cross-flow fan 3 due to the breakage of the first baffle 71.

[0114] In some embodiments, referring to Figures 22 and 25, a second baffle 72 protrudes from the sidewall of the motor housing 7. One end of the first baffle 71 and the second baffle 72 are connected to the sidewall of the motor housing 7, and the other end extends radially toward the outer ring 4 along the outer rotor motor 5. The first baffle 71 is closer to the cross-flow fan 3 than the second baffle 72, and a recess 74 is formed between the first baffle 71 and the second baffle 72.

[0115] In this embodiment, the second baffle 72 improves the dustproof, waterproof, and insect-proof effects. It should be understood that in other embodiments, the second baffle 72 may be omitted; its application can be considered based on actual circumstances.

[0116] In some embodiments, the recess 74 may be formed by an upward recess of a portion of the sidewall of the motor cover 7.

[0117] In some embodiments, continuing to refer to FIG25, the distance between the extension section 43 (or the first connecting rib 41 with straight ribs) and the second baffle 72 along the axial direction of the cross-flow fan 3 is L1, and the distance between the outer ring 4 and the second connecting rib 63 on its own extension line is L2. Wherein, L1≥L2. In this embodiment, L2 is selected as 3mm.

[0118] In some embodiments, when the stator 51 is mounted on the motor bracket 6, a rubber ring is provided between the stator 51 and the motor bracket 6. The rubber ring may be located on the stator 51. Setting L1 to be greater than or equal to L2 ensures that when the indoor unit 100 of the wall-mounted air conditioner falls and the cross-flow fan 3 lurches towards the external rotor motor 5, the outer ring 4 first impacts the rubber ring on the contact surface of the stator 51 to absorb shock, thus bearing the impact of the cross-flow fan 3. This protects the cross-flow fan 3, reduces the risk of damage, and minimizes or prevents the second baffle 72 from breaking due to impact, which could cause noise inside the cross-flow fan 3.

[0119] In some embodiments, referring to Figures 23 and 25, the distance between the stator 51 and the end cover 31 in the axial direction of the cross-flow fan 3 is L5. Wherein, L5 = L2.

[0120] In some embodiments, a shock-absorbing support rubber may be provided at position L5, wherein the support rubber is disposed on the stator 51. Setting L5 to be equal to L2 ensures that when the entire unit is dropped and the cross-flow fan 3 moves towards the stator 51, the support rubber at position L5 and the stator 51 at position L2 jointly bear the impact of the cross-flow fan 3 to absorb shock, thereby protecting the cross-flow fan 3 and reducing the risk of damage.

[0121] In some embodiments, referring to FIG25, the distance between the first connecting rib 41 and the motor bracket 6 in the axial direction of the cross-flow fan 3 is L6. Wherein, L6≥L2.

[0122] In this embodiment, L6 is set to be greater than or equal to L2, so that when the indoor unit 100 of the wall-mounted air conditioner falls and the cross-flow fan 3 moves in the direction of the external rotor motor 5, the outer ring 4 first collides with the rubber ring on the contact surface of the stator 51 and the supporting rubber shock absorber to protect the cross-flow fan 3 and reduce or prevent the cross-flow fan 3 from breaking.

[0123] In some embodiments, referring to FIG25, the distance between the first connecting rib 41 and the annular rib 61 in the axial direction of the cross-flow fan 3 is L7. Wherein, L7≥L2.

[0124] In this embodiment, L7 is set to be greater than or equal to L2. When the indoor unit 100 of the wall-mounted air conditioner falls and the cross-flow fan 3 lurches towards the external rotor motor 5, the outer ring 4 first collides with the rubber ring on the contact surface of the stator 51 to absorb the shock, thus bearing the impact of the cross-flow fan 3 and protecting it from damage. At the same time, this reduces or avoids the situation where the first connecting rib 41 impacts the annular rib 61, causing the annular rib 61 to break and generate noise inside the cross-flow fan 3.

[0125] In some embodiments, referring to FIG26, the first receiving portion 42 has two first sidewalls 421 disposed opposite to each other. The annular ribs 412 of the first connecting rib 41 and the outer ring member 4 form the two first sidewalls 421 of the first receiving portion 42 disposed opposite to each other.

[0126] In some embodiments, referring to FIG26, the wall-mounted air conditioner indoor unit 100 may include a third baffle 413. The third baffle 413 is circumferentially disposed on one of the two first sidewalls 421. That is, the third baffle 413 is connected to the first sidewall 421 in the circumferential direction.

[0127] In some embodiments, the third baffle 413, the first connecting baffle 41, the outer ring 4, and the end cap 31 can be an integral structure to ensure the structural strength of the product. The third baffle 413, the first connecting baffle 41, the outer ring 4, and the end cap 31 can be integrally injection molded, but this is not limited to this; other methods can also be used to form an integral structure.

[0128] In some embodiments, referring to FIG26, the wall-mounted air conditioner indoor unit 100 may include a fourth baffle 62. The fourth baffle 62 is disposed around the side of the annular baffle 61 near the third baffle 413. After product assembly, the third baffle 413 is closer to the cross-flow fan 3 relative to the fourth baffle 62. The third baffle 413 and the fourth baffle 62 are spaced apart in the length direction of the housing 1, and the third baffle 413 and the fourth baffle 62 have an overlapping area in the axial direction of the outer ring 4.

[0129] The wall-mounted air conditioner indoor unit 100 provided in this embodiment has an annular rib 61 extending into the first receiving part 42 to cover the gap between the motor bracket 6 and the outer ring 4. The annular rib 61 and the first receiving part 42 form a waterproof, dustproof and waterproof labyrinth structure.

[0130] In this embodiment, by setting a third baffle 413 and a fourth baffle 62 with overlapping areas, they cooperate with the annular rib 61 and the first receiving part 42 to form a multi-level labyrinth structure. This reduces or blocks dust, impurities, insects, water vapor, etc. from the outside of the external rotor motor 5 from entering the gap between the stator 51 and the rotor 52. It also reduces or avoids blockage between the stator 51 and the rotor 52 affecting rotation and generating noise, or reduces or avoids the problem of water vapor entering between the stator 51 and the rotor 52 and causing a short circuit, thereby improving the safety protection level of the external rotor motor 5. In other words, when dust, impurities, insects, and water vapor from the outside of the external rotor motor 5 enter the rotation gap between the stator 51 and the rotor 52 through the gap between the outer ring 4 and the motor bracket 6, they need to make multiple turns in the multi-level labyrinth structure after being blocked by multiple ribs before entering the interior of the external rotor motor 5. That is, the multi-level labyrinth structure formed by multiple ribs reduces the possibility of dust, impurities, insects, and water vapor entering between the stator 51 and the rotor 52, thereby improving the safety protection level of the external rotor motor 5.

[0131] In some embodiments, the annular rib 61, the motor bracket 6, and the fourth retaining rib 62 can be an integral structure to ensure structural strength. The annular rib 61, the motor bracket 6, and the fourth retaining rib 62 can be integrally injection molded, but this is not limited to this; other methods can also be used to form an integral structure.

[0132] In some embodiments, referring to Figures 27 and 28, a fourth baffle 62 is disposed on the outer peripheral wall of the annular baffle 61 and located within the first receiving portion 42. A third baffle 413 is circumferentially disposed on the first connecting baffle 41 and extends radially along the outer ring member 4.

[0133] In this embodiment, after assembly, the third baffle 413 of the wall-mounted air conditioner indoor unit 100 is closer to the cross-flow fan 3 than the fourth baffle 62, and the third baffle 413 and the fourth baffle 62 are located at the inlet end of the multi-stage labyrinth structure. Along the length of the housing 1, the third baffle 413 and the fourth baffle 62 are spaced apart; and the third baffle 413 and the fourth baffle 62 overlap in the radial direction of the outer ring 4.

[0134] The wall-mounted air conditioner indoor unit 100 provided in this embodiment has an annular rib 61 extending into the first receiving portion 42, which can block the axial gap between the motor bracket 6 and the outer ring 4. By setting a third baffle 413 and a fourth baffle 62 on the annular rib 61 and the first connecting rib 41 respectively, they cooperate with the motor bracket 6 and the first receiving portion 42 to form a multi-level labyrinth structure, reducing or preventing dust, impurities, insects, water vapor, etc. from the outside of the external rotor motor 5 from entering the gap between the stator 51 and the rotor 52, reducing or preventing blockage between the stator 51 and the rotor 52 from affecting rotation and generating noise, or preventing or reducing the problem of water vapor entering between the stator 51 and the rotor 52 and causing a short circuit, thus improving the safety protection level of the external rotor motor 5.

[0135] Among them, the third baffle 413 and the fourth baffle 62 are set at the inlet end of the multi-stage labyrinth structure, which can block dust, impurities, insects and water vapor outside the external rotor motor 5 from entering the labyrinth structure, thereby reducing the risk of dust, impurities, insects and water vapor entering the labyrinth structure, and thus reducing or preventing them from entering the gap between the stator 51 and the rotor 52.

[0136] In some embodiments, referring to Figures 28 and 29, the radial dimension of the overlapping area is n. n ≥ 1 mm. By designing n to be not less than 1 mm, it is beneficial to form a complex path between the third baffle 413 and the fourth baffle 62. In other words, in order to provide a complex path for dust, moisture, or insects within the first receiving portion 42, and to reduce or prevent their entry into the rotational gap between the stator 51 and the rotor 52, the radial dimension n of the overlapping area is set to be not less than the fourth parameter value. The fourth parameter value can be any value between 1 mm and 1.4 mm. A suitable parameter is considered during the design process; for example, the fourth parameter value can be 1 mm.

[0137] In some embodiments, referring to Figures 28 and 30, the distance between the third baffle 413 and the fourth baffle 62 along the length of the housing 1 is m, and the distance between the annular rib 61 and the first connecting rib 41 is q. Wherein, m ≥ q.

[0138] In this embodiment, m is set to be no less than q, so that when the whole machine is dropped, the impact of the cross-flow fan 3 is mainly borne by the annular rib 61 and the motor bracket 6, reducing or avoiding the collision and breakage of the third baffle 413 and the fourth baffle 62, thereby reducing or avoiding the noise generated inside the cross-flow fan 3 after the third baffle 413 and the fourth baffle 62 break.

[0139] In some embodiments, referring to Figures 28 and 30, the distance between the third baffle 413 and the fourth baffle 62 along the length of the housing 1 is m. Wherein, 2mm ≤ m, and m ≤ 6mm. A safety distance is required to account for axial runout caused by the rotation of the cross-flow fan 3 or the entire unit being dropped. Therefore, to ensure a safe distance between the third baffle 413 and the fourth baffle 62, and to reduce or avoid mechanical interference and friction between them, the distance m between the third baffle 413 and the fourth baffle 62 can be set to a value not less than the fifth parameter. The fifth parameter value can be any value between 2mm and 2.5mm. A suitable parameter should be selected during the design process. For example, the fifth parameter value can be 2mm. Furthermore, to reduce or block dust, impurities, insects, and moisture, the distance m between the third baffle 413 and the fourth baffle 62 can be set to a value not greater than the sixth parameter. The sixth parameter value can be between 5mm and 6mm. A suitable parameter should be selected during the design process. For example, the sixth parameter value can be 6mm.

[0140] In some embodiments, the distance between the third baffle 413 and the fourth baffle 62 along the length of the housing 1 is m. Wherein, 2mm≤m≤6mm.

[0141] In this embodiment, the distance m is set within a reasonable range of 2mm to 6mm, which not only ensures the safe distance between the third baffle 413 and the fourth baffle 62, but also reduces or avoids the effect of excessive distance m between the third baffle 413 and the fourth baffle 62 affecting the blocking effect of dust, water vapor, etc., thereby improving the safety protection level of the external rotor motor 5.

[0142] In some embodiments, referring to FIG31, the rotational clearance between the third baffle 413 and the annular rib 61 is h1. Wherein, 1.5mm ≤ h1, and h1 ≤ 6mm. The rotational clearance h1 is the movement clearance between the third baffle 413 and the annular rib 61 in the radial direction of the cross-flow fan 3. To reduce or avoid collisions between the first baffle 71 and the annular rib 61 during operation of the cross-flow fan 3, the rotational clearance h1 can be set to be no less than the seventh parameter value. The seventh parameter value can be any value between 1.5mm and 2mm. A suitable parameter is considered during the design. For example, the seventh parameter value can be 1.5mm. Furthermore, to reduce or block the entry of dust, impurities, and moisture, the rotational clearance h1 can be set to be no greater than the eighth parameter value. The eighth parameter value can be any value between 5mm and 6mm. A suitable parameter is considered during the design. For example, the eighth parameter value can be 6mm.

[0143] In some embodiments, the rotational clearance between the third retaining rib 413 and the annular rib 61 is h1. 1.5mm≤h1≤6mm.

[0144] In this embodiment, the rotation gap h1 is set within a reasonable range, such as any value between 1.5mm and 6mm. This reduces or prevents dust, water vapor, etc. from entering the outer rotor motor 5 through the labyrinth structure, while ensuring a safe distance between the third baffle 413 and the annular rib 61, thereby reducing or avoiding collisions between the third baffle 413 and the annular rib 61.

[0145] In some embodiments, referring to FIG31, the rotational clearance between the fourth baffle 62 and the first sidewall 421 where the third baffle 413 is located is h2. Wherein, 1.5mm ≤ h2, and h2 ≤ 6mm. The rotational clearance h2 is the movement clearance between the fourth baffle 62 and the first sidewall 421 where the third baffle 413 is located in the radial direction of the cross-flow fan 3. The rotational clearance h2 cannot be too small to ensure a safe distance between the fourth baffle 62 and the first sidewall 421 where the third baffle 413 is located, reducing the possibility of collision between them. Specifically, to reduce or avoid collision during the operation of the cross-flow fan 3, the rotational clearance h2 is set to be no less than the ninth parameter value. The ninth parameter value can be any value between 1.5mm and 2mm. A suitable parameter should be selected during the design. For example, the ninth parameter value can be 1.5mm. Furthermore, the rotation clearance h2 should not be too large to reduce or prevent the entry of dust, impurities, and moisture. Specifically, the rotation clearance h2 should be set no greater than the value of the tenth parameter. The tenth parameter value can be any value between 5mm and 6mm. A suitable parameter should be selected during the design process. For example, the tenth parameter value could be 6mm.

[0146] In some embodiments, the rotational clearance between the fourth baffle 62 and the first sidewall 421 where the third baffle 413 is located is h2. 1.5mm≤h2≤6mm. In this embodiment, the rotational clearance h2 is set to any value between 1.5mm and 6mm to keep it within a reasonable range, thereby keeping the size of the fourth baffle 62 within a reasonable range. This reduces or prevents the entry of dust, moisture, etc., while also reducing or avoiding collisions between the fourth baffle 62 and the first sidewall 421 where the third baffle 413 is located.

[0147] In some embodiments, referring to FIG31, the rotational clearance h3 between the first sidewall 421, which is not connected to the third baffle 413, and the annular rib 61 can be any value between 1.5 mm and 6 mm. In this embodiment, the rotational clearance h3 is set to any value between 1.5 mm and 6 mm to keep it within a reasonable range, thereby keeping the size of the annular rib 61 within a reasonable range. This reduces or prevents the entry of dust, moisture, etc., while reducing or avoiding collisions between the first sidewall 421, which is not connected to the third baffle 413, and the annular rib 61.

[0148] In some embodiments, a motor cavity is formed inside the motor bracket 6, and the end of the motor cavity away from the cross-flow fan 3 has an opening. The stator 51 is mounted in the motor bracket 6 through the opening.

[0149] In some embodiments, referring to FIG22, the wall-mounted air conditioner indoor unit 100 may include a cover plate 9, which is adapted to the open end of the motor bracket 6 to cover the open end of the motor bracket 6, protecting the external rotor motor 5 while reducing interference from foreign objects on the operation of the external rotor motor.

[0150] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0151] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A wall-mounted air conditioner indoor unit, wherein, include: The housing has an air conditioning inlet and an air conditioning outlet on its top and front bottom sides, respectively, and the housing includes a base. An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the housing; A cross-flow fan is mounted on the base and located below the indoor heat exchanger; Under the action of the cross-flow fan, the indoor airflow enters the housing through the air conditioner inlet, and after heat exchange by the indoor heat exchanger, it is output to the room through the air conditioner outlet. The cross-flow fan includes an end cover. The outer ring component has one end fixedly connected to the end cap; An external rotor motor includes: The rotor is nested inside the outer ring component; The stator is sleeved on the outside of the rotor, and the stator and the rotor are spaced apart. A motor bracket, connected to the base, is used to mount the stator; A first connecting rib is arranged circumferentially along the outer ring of the outer ring member. The first connecting rib is bent and forms a first receiving portion with a first opening between it and the outer ring member. A ring-shaped rib is formed at one end of the motor bracket near the cross-flow fan, and the free end of the ring-shaped rib passes through the first opening and extends into the first receiving portion.

2. The wall-mounted air conditioner indoor unit according to claim 1, wherein, The inner peripheral wall of the motor bracket is provided with a second connecting rib, which is bent and forms a second receiving portion with a second opening between the second connecting rib and the annular rib. The rotor and the second connecting rib are spaced apart in the axial direction, and the free end of the outer ring extends into the second receiving portion.

3. The wall-mounted air conditioner indoor unit according to claim 2, wherein, Along the axial direction of the cross-flow fan, the movement gap between the outer ring and the second connecting rib is d, where d ≥ 3 mm.

4. The wall-mounted air conditioner indoor unit according to claim 1 or 2, wherein, The wall-mounted air conditioner indoor unit also includes a motor cover, which is detachably connected to the base. The motor cover and the base together define a motor mounting cavity, and the external rotor motor and the motor bracket are housed in the motor mounting cavity.

5. The wall-mounted air conditioner indoor unit according to claim 4, wherein, The first connecting rib includes a vertical rib and a ring rib, the ring rib being arranged around the outside of the outer ring member; a recess is formed on the side wall of the motor cover, the recess being arranged around the outside of the vertical rib, the vertical rib extending to the outside of the ring rib to form an extension section, the extension section extending into the recess.

6. The wall-mounted air conditioner indoor unit according to claim 5, wherein, The motor cover has a first baffle protruding on its side wall, which forms the side wall of the recess. The first baffle is located on the side of the extension section near the cross-flow fan. In the axial direction of the cross-flow fan, the distance between the extension section and the first baffle is L3, and the distance between the shaft cover of the cross-flow fan and the base is L4, where L3 ≥ L4.

7. The wall-mounted air conditioner indoor unit according to claim 6, wherein, The motor cover has a second baffle protruding on its side wall, and the second baffle and the first baffle are spaced apart to form the recess; in the axial direction of the cross-flow fan, the distance between the extension section and the second baffle is L1, and the distance between the outer ring and the second connecting rib on its extension line is L2, where L1≥L2.

8. A wall-mounted air conditioner indoor unit, wherein, include: The housing has an air conditioning inlet and an air conditioning outlet on its top and front bottom sides, respectively, and the housing includes a base. An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the housing; A cross-flow fan is mounted on the base and located below the indoor heat exchanger; Under the action of the cross-flow fan, the indoor airflow enters the housing through the air conditioner inlet, and after heat exchange by the indoor heat exchanger, it is output to the room through the air conditioner outlet. The cross-flow fan includes an end cover. The outer ring component has one end fixedly connected to the end cap; An external rotor motor includes: The rotor is nested inside the outer ring component; The stator is sleeved on the outside of the rotor, and the stator and the rotor are spaced apart. A motor bracket, connected to the base, is used to mount the stator; A motor cover is detachably connected to the base. The motor cover and the base together define a motor mounting cavity. The external rotor motor and the motor bracket are housed in the motor mounting cavity. A recess is formed on the side wall of the motor mounting cavity; The first connecting rib is connected to the outer ring of the outer ring member, and the first connecting rib extends radially along the cross-flow fan into the recess.

9. A wall-mounted air conditioner indoor unit, wherein, include: The housing has an air conditioning inlet and an air conditioning outlet on its top and front bottom sides, respectively, and the housing includes a base. An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the housing; A cross-flow fan extends along the length of the housing and is disposed on the base. The cross-flow fan is located below the indoor heat exchanger. Under the action of the cross-flow fan, the indoor airflow enters the housing through the air conditioner inlet, and after heat exchange by the indoor heat exchanger, it is output to the room through the air conditioner outlet. The cross-flow fan includes an end cover. The outer ring component has one end fixedly connected to the end cap; An external rotor motor includes: The rotor is nested inside the outer ring component; The stator is sleeved on the outside of the rotor, and the stator and the rotor are spaced apart. A motor bracket, connected to the base, is used to mount the stator; A first connecting rib is arranged in a ring around the outer ring of the outer ring member. The first connecting rib is bent and forms a first receiving portion with a first opening between it and the outer ring member. The first receiving portion has two first sidewalls arranged opposite to each other. A ring-shaped rib is formed at one end of the motor bracket near the cross-flow fan, and the free end of the ring-shaped rib extends through the first opening into the first receiving portion; The third baffle is arranged around one of the two first side walls; The fourth baffle is arranged around the side of the annular baffle near the third baffle; After assembly, the third baffle is closer to the cross-flow fan than the fourth baffle; in the length direction of the housing, the third baffle and the fourth baffle are spaced apart, and the third baffle and the fourth baffle have an overlapping area in the axial direction of the outer ring.

10. The wall-mounted air conditioner indoor unit according to claim 9, wherein, Along the length of the shell, the distance between the third and fourth baffles is m, and the distance between the annular rib and the first connecting rib is q, where m ≥ q.

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