Indoor air-conditioning unit

Abstract

The present application discloses an indoor air-conditioning unit (100), comprising: a housing (3); a heat exchange air inlet (31); a heat exchange air outlet (32); a base (4); a heat exchange fan (5), wherein a first limiting portion (52) is provided at one end of the heat exchange fan (5) in the axial direction, and the first limiting portion (52) extends in the axial direction of the heat exchange fan (5); and a driving motor (6), wherein the driving motor (6) comprises a motor housing (61); a second limiting portion (611) is provided at one end of the motor housing (61); there is a gap between the second limiting portion (611) and the first limiting portion (52), and in the length direction of a main body (300), the first limiting portion (52) is arranged away from the heat exchange fan (5) relative to the second limiting portion (611); and in the projection along the length direction of the main body (300), the first limiting portion (52) and the second limiting portion (611) at least partially overlap, so as to prevent the heat exchange fan (5) from being separated from the driving motor (6) when falling.

Description

Air conditioner indoor unit

[0001] The present application claims priority to Chinese Patent Application No. 202421488657.2, filed on June 27, 2024, Chinese Patent Application No. 202421494733.0, filed on June 27, 2024, Chinese Patent Application No. 202421494767.X, filed on June 27, 2024, and Chinese Patent Application No. 202421529870.3, filed on June 28, 2024, the contents of all of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

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

[0003] The driving motor is one of the core components of the air conditioner indoor unit. The driving motor drives the heat exchange fan to rotate, sucks indoor air for refrigeration or heating treatment, and then blows out the treated air to achieve indoor temperature regulation.

[0004] However, during production and transportation, the heat exchange fan is prone to axial movement, causing the heat exchange fan and the driving motor to disengage, resulting in separation of the heat exchange fan and the driving motor and reducing the service life of the ceiling-mounted air conditioner indoor unit. SUMMARY

[0005] The present application provides an air conditioner indoor unit that can prevent the heat exchange fan and the driving motor from disengaging due to axial movement of the heat exchange fan.

[0006] According to an aspect of the present application, an air conditioner indoor unit is provided, comprising:

[0007] a main body, a vertical direction of the main body being a height direction of the main body, a horizontal direction of the main body being a length direction of the main body, and a first cavity being formed in the main body;

[0008] The main body comprises:

[0009] a casing;

[0010] a heat exchange air inlet, which is in communication with the first cavity;

[0011] a heat exchange air outlet, which is in communication with the first cavity;

[0012] a base, which is arranged in the first cavity, and a heat exchange air duct is formed in the base;

[0013] A heat exchange fan is arranged in the heat exchange air duct, an axial direction of the heat exchange fan is the same as a length direction of the main body, one end of the axial direction of the heat exchange fan is provided with a first limiting part, and the first limiting part extends along the axial direction of the heat exchange fan;

[0014] A driving motor is arranged at one end of the first limiting part of the heat exchange fan, and the driving motor is used for driving the heat exchange fan to rotate;

[0015] The driving motor comprises:

[0016] A motor shell is fixedly connected with the base, and the motor shell is provided with a second limiting part at one end of the motor shell facing the heat exchange fan;

[0017] An outer rotor is connected with the heat exchange fan, and a rotation axis of the outer rotor is coaxially arranged with a rotation axis of the heat exchange fan;

[0018] An inner stator is arranged in the interior of the motor shell, and the outer rotor is rotatable relative to the inner stator;

[0019] A spacing is arranged between the second limiting part and the first limiting part, and in the length direction of the main body, the first limiting part is arranged away from the heat exchange fan relative to the second limiting part;

[0020] In a projection along the length direction of the main body, the first limiting part and the second limiting part at least partially coincide.

[0021] In the embodiments of the present application, when the heat exchange fan falls and moves along the axial direction thereof, one end of the axial direction of the heat exchange fan is provided with the first limiting part, the first limiting part extends along the axial direction of the heat exchange fan, the motor shell of the driving motor is provided with the second limiting part at one end of the motor shell facing the heat exchange fan, in the length direction of the main body, the first limiting part is arranged away from the heat exchange fan relative to the second limiting part. In a projection along the length direction of the main body, the first limiting part and the second limiting part at least partially coincide. That is, the second limiting part is arranged between the first limiting part and the heat exchange fan, when the heat exchange fan falls and moves along the axial direction thereof, the first limiting part and the second limiting part can abut each other to limit the heat exchange fan and the driving motor from being separated, so as to avoid the separation of the driving motor and the heat exchange fan. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 is a structural diagram of an air conditioner according to some embodiments of the present application;

[0023] FIG. 2 is a schematic diagram of the overall structure of an air conditioner indoor unit according to some embodiments of the present application;

[0024] FIG. 3 is a schematic diagram of the internal structure of an air conditioner indoor unit (without assembling a heat exchanger) according to some embodiments of the present application;

[0025] FIG. 4 is a structural block diagram of an air conditioner according to some embodiments of the present application;

[0026] FIG. 5A is an internal structural diagram of an air conditioner indoor unit according to some embodiments of the present application;

[0027] FIG. 5B is a structural diagram of an air conditioner outdoor unit according to some embodiments of the present application;

[0028] FIG. 6 is a structural diagram of an air conditioner indoor unit according to some embodiments of the present application;

[0029] FIG. 7 is a structural diagram of a driving motor of an air conditioner indoor unit according to some embodiments of the present application;

[0030] FIG. 8 is an enlarged view of portion A in FIG. 7;

[0031] FIG. 9A is an enlarged view of portion B in FIG. 7;

[0032] FIG. 9B is a structural diagram of a heat exchange fan and a driving motor mounted to a base according to some embodiments of the present application;

[0033] FIG. 9C is a structural diagram of a heat exchange fan and a driving motor according to some embodiments of the present application; FIG. 9D is a structural diagram of a heat exchange fan and a driving motor according to some embodiments of the present application;

[0034] FIG. 10 is a heat exchange fan mounting diagram of an air conditioner indoor unit according to some embodiments of the present application;

[0035] FIG. 11 is a structural diagram of a driving motor and a heat exchange fan of an air conditioner indoor unit according to some embodiments of the present application;

[0036] FIG. 12 is a structural diagram of a heat exchange fan of an air conditioner indoor unit according to some embodiments of the present application;

[0037] FIG. 13 is a structural diagram of a driving motor of an air conditioner indoor unit according to some embodiments of the present application;

[0038] FIG. 14 is an end view of a driving motor of an air conditioner indoor unit according to some embodiments of the present application;

[0039] FIG. 15 is a sectional view taken along line A-A in FIG. 14;

[0040] FIG. 16 is an enlarged view of portion C in FIG. 15;

[0041] FIG. 17 is an enlarged view of portion D in FIG. 15;

[0042] FIG. 18 is a disassembled structural diagram of a driving motor of an air conditioner indoor unit according to some embodiments of the present application;

[0043] FIG. 19 is a structural diagram of a driving motor of an air conditioner indoor unit according to some embodiments of the present application;

[0044] FIG. 20 is a structural diagram of a first bearing of an air conditioner indoor unit according to some embodiments of the present application;

[0045] FIG. 21 is a split diagram of a first bearing of an air conditioner indoor unit according to some embodiments of the present application;

[0046] FIG. 22 is a structural diagram of an internal structure of an air conditioner indoor unit when an outer cover is not assembled according to some embodiments of the present application;

[0047] FIG. 23 is a connection diagram of an electrical box and a driving motor according to some embodiments of the present application;

[0048] FIG. 24 is a structural diagram of a heat exchange fan and a driving motor of an air conditioner indoor unit when installed in a base according to some embodiments of the present application;

[0049] FIG. 25 is a structural diagram of a heat exchange fan of an air conditioner indoor unit when connected with a driving motor and a motor housing according to some embodiments of the present application;

[0050] FIG. 26 is a structural diagram of a heat exchange fan and a driving motor of an air conditioner indoor unit when assembled according to some embodiments of the present application;

[0051] FIG. 27 is a sectional view of a heat exchange fan and a driving motor of an air conditioner indoor unit when connected with each other and assembled in a motor housing according to some embodiments of the present application;

[0052] FIG. 28 is a structural diagram of a connection housing and a heat exchange fan of an air conditioner indoor unit when integrally formed according to some embodiments of the present application;

[0053] FIG. 29 is another angle sectional view of a heat exchange fan and a driving motor of an air conditioner indoor unit when connected with each other and assembled in a motor housing according to some embodiments of the present application;

[0054] FIG. 30 is a structural diagram of an inner stator and a motor housing of an air conditioner indoor unit when assembled according to some embodiments of the present application;

[0055] FIG. 31 is a structural diagram of a buffer and a motor cover of an air conditioner indoor unit when assembled according to some embodiments of the present application;

[0056] FIG. 32 is a structural diagram of a motor cover of an air conditioner indoor unit according to some embodiments of the present application;

[0057] FIG. 33 is a structural diagram of a buffer of an air conditioner indoor unit according to some embodiments of the present application.

[0058] FIG. 34 is a structural diagram of a connection shaft and an outer rotor of an air conditioner indoor unit when assembled according to some embodiments of the present application;

[0059] FIG. 35 is a structural schematic diagram of a heat exchange fan of an air conditioner indoor unit and a driving motor assembled to a motor shell according to some embodiments of the present application;

[0060] FIG. 36 is a structural schematic diagram of a driving motor of an air conditioner indoor unit assembled to a motor shell according to some embodiments of the present application;

[0061] FIG. 37 is an enlarged view of a portion E in FIG. 36;

[0062] FIG. 38 is an enlarged view of a portion F in FIG. 36;

[0063] FIG. 39 is a structural schematic diagram of a protruding portion of an air conditioner indoor unit and a shaft sleeve according to some embodiments of the present application. Embodiments of the present application

[0064] For the purpose of making the present application and its embodiments more clear, the present application will be described in detail below with reference to the accompanying drawings of the exemplary embodiments of the present application. It is apparent that the described exemplary embodiments are only a part of the embodiments of the present application, but not all of the embodiments of the present application.

[0065] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the following described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0066] The terms "first", "second", "third", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchanged under appropriate circumstances.

[0067] The terms "include" and "have" and any variations thereof are intended to cover but not exclusive inclusion, for example, a product or device including a series of components does not necessarily limit to all the components clearly listed, but can include other components not clearly listed or inherent to these products or devices.

[0068] Referring to FIG. 1, an air conditioner 1000 includes an air conditioner indoor unit 100 and an air conditioner outdoor unit 5, and the air conditioner indoor unit 100 is installed in an indoor space. The air conditioner outdoor unit 5 is installed in an outdoor space for outdoor environment heat exchange.

[0069] According to one embodiment of the present application, as shown in FIG. 2, an air conditioner indoor unit 100 is provided.

[0070] The air conditioner indoor unit 100 provided by the embodiments of the present application can have various implementation forms. Illustratively, the air conditioner indoor unit 100 can be a hanging air conditioner indoor unit with a fresh air function, or a conventional hanging air conditioner indoor unit.

[0071] As shown in FIG. 2, the air conditioner indoor unit 100 includes a main body 300, which has a bottom and a top. The top of the main body 300 is opposite to the bottom of the main body 300, and the height direction of the main body 300 is from the bottom of the main body 300 to the top of the main body 300. The main body 300 also has a length direction, wherein one side of the main body 300 is opposite to the other side of the main body 300, and the length direction of the main body 300 is from one side of the main body 300 to the other side of the main body 300. The main body 300 has a front side and a back side arranged oppositely, wherein the front side of the main body 300 is the side of the main body 300 facing the user, and the back side of the main body 300 is the side of the main body 300 facing the wall. The front-to-back direction of the main body 300 is from the front side of the main body 300 to the back side of the main body 300.

[0072] In some embodiments, the main body 300 can include a cabinet 3 arranged in an indoor space, usually arranged at the top of the indoor space or the space above the indoor space. The cabinet 3 has a front side and a back side arranged oppositely, wherein the front side of the cabinet 3 is the side of the cabinet 3 facing the user, and the back side of the cabinet 3 is the side of the cabinet 3 facing the wall.

[0073] In some embodiments, the main body 300 can further include a heat exchange air inlet 31 arranged at the top of the cabinet 3. During refrigeration or heating, indoor air can enter the interior of the cabinet 3 through the heat exchange air inlet 31. The heat exchange air inlet 31 extends along the length direction of the cabinet 3 to increase the air inlet amount of the air conditioner indoor unit 100.

[0074] Referring to FIG. 3, in some embodiments, the main body 300 can further include an outer cover 33, and the interior of the outer cover 33 is defined to form a first cavity 331 with an opening facing the back side of the cabinet 3. The first cavity 331 is formed in the interior of the cabinet 3, and the first cavity 331 is in communication with the heat exchange air inlet 31. The heat exchange air inlet 31 is arranged at the top of the outer cover 33, and indoor air can enter the first cavity 331 through the heat exchange air inlet 31.

[0075] In some embodiments, the main body 300 can further include a heat exchange air outlet 32 arranged at the bottom of the cabinet 3. The first cavity 331 is in communication with the heat exchange air inlet 31 and the heat exchange air outlet 32, respectively. During refrigeration or heating, indoor air flows to the first cavity 331 through the heat exchange air inlet 31, and flows to the indoor space through the heat exchange air outlet 32. The heat exchange air outlet 32 extends along the length direction of the cabinet 3 to increase the air outlet amount of the air conditioner indoor unit 100.

[0076] Please refer to FIG. 4 to FIG. 6, in some embodiments, the main body 300 can further include a base 4, the base 4 is arranged in the first cavity 331, the base 4 and the outer cover 33 are detachably connected with each other, and the base 4 is formed with a heat exchange air duct 41.

[0077] The front bottom opening of the base 4 is arranged in correspondence with the front bottom opening of the outer cover 110, so as to jointly define a heat exchange air outlet 32.

[0078] In some embodiments, the main body 300 can further include an indoor heat exchanger 1001, the indoor heat exchanger 1001 is arranged in the first cavity 331, and the indoor heat exchanger 1001 is used for heat exchange with indoor air entering the first cavity 331 to form air-conditioning air, the air-conditioning air is output to the indoor through the heat exchange air outlet 32 to meet the cooling or heating needs of the user.

[0079] It should be noted that the air-conditioning air can be cold air, hot air or normal temperature air.

[0080] In some embodiments, the main body 300 can further include a heat exchange fan 5, the heat exchange fan 5 is arranged in the heat exchange air duct 41, and the axial direction of the heat exchange fan 5 is the same as the length direction of the main body 300. By operating the heat exchange fan 5, the indoor air is introduced into the first cavity 331 through the heat exchange air inlet 31, then flows through the indoor heat exchanger 1001, and then flows to the indoor through the heat exchange air outlet 32 after flowing through the heat exchange air duct 41.

[0081] In some embodiments, the heat exchange fan 5 is arranged at the leeward side of the indoor heat exchanger 1001, so as to reduce the resistance of the indoor heat exchanger 1001 to the air flow and improve the air inlet amount to the indoor.

[0082] It should be noted that in the hanging type air conditioner indoor unit 100, the heat exchange fan 5 is usually a cross-flow fan.

[0083] In some embodiments, the air conditioner outdoor unit 200 is arranged in an outdoor space, the air conditioner outdoor unit 200 includes a shell 2, the shell 2 is arranged with a second cavity 21, and the shell 2 is arranged with an outdoor air inlet 22 and an outdoor air outlet 23. The outdoor air inlet 22 is in communication with the outdoor space and the second cavity 21, and the outdoor air outlet 23 is in communication with the outdoor space and the second cavity 21.

[0084] Please refer to FIG. 6, in some embodiments, the shell 2 is arranged with an outdoor heat exchanger 202, the outdoor heat exchanger 202 is arranged with refrigerant, and the refrigerant in the outdoor heat exchanger 202 can be used for heat exchange with air flowing through the outdoor heat exchanger 202 and entering the second cavity 21.

[0085] In some embodiments, the shell 2 is arranged with a compressor 201, the compressor 201 is arranged in the second cavity, and the compressor 201 is installed at the bottom of the air conditioner outdoor unit 200.

[0086] In some embodiments, the air conditioner outdoor unit 200 can include a throttling device 204 disposed in the second cavity 21 for expanding the high-temperature and high-pressure liquid-phase refrigerant into low-pressure liquid-phase refrigerant. The throttling device 204 can be disposed at the leeward side of the outdoor heat exchanger 202, which can facilitate connection with the compressor 201.

[0087] The air conditioner 1000 performs a refrigeration cycle of the air conditioner 1000 by using the compressor 201, the outdoor heat exchanger 202, the throttling device 204, and the indoor heat exchanger 1001. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0088] The compressor 201 compresses the low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas. The discharged refrigerant gas flows into the outdoor heat exchanger 202.

[0089] The outdoor heat exchanger 202 condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0090] The throttling device 204 expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the outdoor heat exchanger 202 into low-pressure liquid-phase refrigerant.

[0091] The indoor heat exchanger 1001 evaporates the refrigerant expanded in the throttling device 204 and returns the low-temperature and low-pressure refrigerant gas to the compressor 201.

[0092] The indoor heat exchanger 1001 can achieve a refrigeration effect by heat-exchanging with the material to be cooled using the latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioner 1000 can adjust the temperature of the indoor space.

[0093] In both the indoor heat exchanger 1001 and the outdoor heat exchanger 202, one of which is a condenser and the other of which is an evaporator, when the indoor heat exchanger 1001 functions as a condenser and the outdoor heat exchanger 202 functions as an evaporator, the air conditioner 1000 functions as a heater in a heating mode. When the indoor heat exchanger 1001 functions as an evaporator and the outdoor heat exchanger 202 functions as a condenser, the air conditioner 1000 functions as a cooler in a cooling mode.

[0094] Referring to FIG. 4, in some embodiments, the heat exchange fan 5 can include a first end 51, which is one end of the heat exchange fan 5 in the axial direction.

[0095] In some embodiments, the main body 300 can further include a driving motor 6 disposed at the first end 51 of the heat exchange fan 5, the driving motor 6 being configured to drive the heat exchange fan 5 to rotate.

[0096] Please refer to FIG. 7 to FIG. 9, in some embodiments, the driving motor 6 can include a motor housing 61, the motor housing 61 is fixedly connected with the base 4, one end of the motor housing 61 is provided with a second limiting portion 611.

[0097] Please refer to FIG. 12, in some embodiments, the first end 51 is provided with a first limiting portion 52, the first limiting portion 52 extends along the axial direction of the heat exchange fan 5.

[0098] Please refer to FIG. 13, in some embodiments, the driving motor 6 can further include an outer rotor 62, the outer rotor 62 is fixedly connected with the heat exchange fan 5, the rotation axis of the outer rotor 62 is coaxially arranged with the rotation axis of the heat exchange fan 5, the outer rotor 62 rotates synchronously with the heat exchange fan 5.

[0099] In some embodiments, the driving motor 6 can further include an inner stator 63, the inner stator 63 is arranged inside the motor housing 61, the outer rotor 62 is rotatable relative to the inner stator 63.

[0100] In some embodiments, the inner stator 63 is detachably connected with the motor housing 61, the motor housing 61 is connected with the base 4, the inner stator 63 is connected with the motor housing 61 to realize the fixation of the inner stator 63.

[0101] In some embodiments, a spacing is arranged between the second limiting portion 611 and the first limiting portion 52, in the length direction of the main body 300, the first limiting portion 52 is arranged away from the heat exchange fan 5 relative to the second limiting portion 611. In the projection along the length direction of the main body 300, the first limiting portion 52 and the second limiting portion 611 at least partially overlap.

[0102] The spacing arranged between the second limiting portion 611 and the first limiting portion 52 can avoid the first limiting portion 52 and the second limiting portion 611 from being in contact when the heat exchange fan 5 rotates, thereby affecting the rotation of the heat exchange fan 5.

[0103] In the length direction of the main body 300, the first limiting portion 52 is arranged away from the heat exchange fan 5 relative to the second limiting portion 611. In the projection along the length direction of the main body 300, the first limiting portion 52 and the second limiting portion 611 at least partially overlap. That is, the second limiting portion 611 is arranged between the first limiting portion 52 and the heat exchange fan 5, when the heat exchange fan 5 falls and moves along the axial direction thereof, the first limiting portion 52 and the second limiting portion 611 can abut each other to limit the heat exchange fan 5 and the driving motor 6 from being separated, thereby avoiding the separation of the driving motor 6 and the heat exchange fan 5, and improving the assembly efficiency of the heat exchange fan 5 and the driving motor 6.

[0104] The first limiting part 52 and the second limiting part 611 are provided with a spacing, when the heat exchange fan 5 moves along the axial direction, the first limiting part 52 and the second limiting part 611 abut, which can not only make the first limiting part 52 and the second limiting part 611 not contact when the heat exchange fan 5 rotates normally, avoiding the mutual contact of the first limiting part 52 and the second limiting part 611 affecting the rotation, but also can make the heat exchange fan 5 fall off, avoiding the driving motor 6 from being disconnected from the heat exchange fan 5 when the heat exchange fan 5 moves along the axial direction, avoiding the damage of the heat exchange fan 5 and the driving motor 6, avoiding the repeated assembly of the heat exchange fan 5 and the driving motor 6, and improving the assembly efficiency of the heat exchange fan 5 and the driving motor 6.

[0105] As shown in FIG. 10, in some embodiments, the base 4 can further include a motor cavity 42, the motor cavity 42 is provided on one side of the heat exchange air duct 41, and the driving motor 6 is arranged in the motor cavity 42.

[0106] In some embodiments, the base 4 can further include a limiting piece 43, and the limiting piece 43 is arranged in the motor cavity 42.

[0107] As shown in FIG. 11, in some embodiments, the motor shell 61 can further include a limiting rib 612, and the limiting rib 612 is arranged at the bottom of the motor shell 61. The limiting piece 43 cooperates with the limiting rib 612 to limit the axial movement of the motor shell 61.

[0108] Illustratively, the limiting piece 43 can be arranged as a limiting groove, the limiting rib 612 can be inserted into the limiting groove, and the limiting groove is clamped on the limiting rib 612, thereby preventing the limiting rib 612 from moving along the axial direction of the heat exchange fan 5, and further limiting the freedom of the motor shell 61 in the length direction of the main body 300.

[0109] As shown in FIGS. 12 and 13, in some embodiments, the heat exchange fan 5 can further include a first flange 53, the first flange 53 is arranged at the first end 51 of the heat exchange fan 5, the first flange 53 is arranged around the edge of the heat exchange fan 5, the first flange 53 extends along the axial direction of the heat exchange fan 5 away from the heat exchange fan 5, and the first limiting part 52 is arranged on the first flange 53.

[0110] In some embodiments, the motor shell 61 can further include a second flange 613, the second flange 613 is arranged at one end of the motor shell 61 facing the heat exchange fan 5, the second flange 613 extends along the axial direction of the motor shell 61 away from the motor shell 61, and the second limiting part 611 is arranged on the second flange 613.

[0111] As shown in FIG. 8, in some embodiments, the second flange 613 is arranged inside the first flange 53, and illustratively, the shape of the second limiting part 611 can be arranged as a ring shape, and the second limiting part 611 extends towards the inside of the first flange 53.

[0112] In some embodiments, the first limiting portion 52 is provided as a hook, and the first limiting portion 52 extends towards the outside of the second flange 613.

[0113] In some embodiments, the first flange 53 and the second flange 613 at least partially overlap in the projection along the height direction of the main body 300, so that the first flange 53 and the second flange 613 are staggered, avoiding dust from falling into the inside of the motor housing 61 and causing damage to the driving motor 6.

[0114] Please continue to refer to FIG. 8. In some embodiments, the heat exchange fan 5 can further include a third flange 54, which is provided on the inside of the first flange 53 and extends in the axial direction of the heat exchange fan 5 towards the driving motor 6. The outer rotor 62 is provided on the inside of the third flange 54 and rotates synchronously with the heat exchange fan 5.

[0115] In some embodiments, the third flange 54 can be annular, and the third flange 54 is coaxially provided with the first flange 53. The second flange 613 is provided between the first flange 53 and the third flange 54. The third flange 54 does not contact the first flange 53, and a gap is provided between the first flange 53, the second flange 613 and the third flange 54 to facilitate the rotation of the heat exchange fan 5.

[0116] In some embodiments, a gap is provided between the first flange 53, the second flange 613 and the third flange 54, and the gap is in a meandering shape. This way can prevent dust and moisture from entering the inside of the motor housing 61 and avoid damage to the driving motor 6.

[0117] As shown in FIG. 9A, in some embodiments, the main body 300 can further include a first bearing 7, which is provided inside the inner stator 63.

[0118] In some embodiments, the first bearing 7 can be provided as a sliding rubber bearing, and the rubber material can provide better buffering effect for the heat exchange fan 5.

[0119] In some embodiments, the heat exchange fan 5 can further include a fan shaft 56, which is rotatably provided in the first bearing 7 and can rotate relative to the first bearing 7. The first bearing 7 can limit the displacement and shaking of the fan shaft 56 in directions other than the rotation around its own axis, so that the fan shaft 56 can stably rotate around its own axis.

[0120] As shown in FIG. 8, in some embodiments, the motor housing 61 further includes a fourth flange 614, which extends in the radial direction of the motor housing 61 towards the direction away from the motor housing 61.

[0121] In the projection along the height direction of the main body 300, the fourth flange 614 has a spacing with the first limiting part 52 to avoid the first limiting part 52 hitting the fourth flange 614 when the heat exchange fan 5 falls and moves along the axial direction, thereby avoiding damage to the heat exchange fan 5 and the driving motor 6.

[0122] As shown in FIG. 9B, in some embodiments, the air conditioner indoor unit 100 can further include a second bearing 9 connected to the second end 58 of the heat exchange fan 5 in the axial direction. The first end 51 and the second end 58 are two ends of the heat exchange fan 5 opposite in the axial direction. The second bearing 9 is arranged opposite to the first bearing 7 in the axial direction of the heat exchange fan 5, and the fan shaft 56 penetrates the second bearing 9. The first bearing 7 and the second bearing 9 can define the rotation center of the heat exchange fan 5 to avoid shaking in the radial direction when the heat exchange fan 5 rotates.

[0123] In some embodiments, the second bearing 9 can be a sliding rubber bearing. The rubber material can provide better buffering effect for the heat exchange fan 5. When the heat exchange fan 5 falls, it will move axially due to inertia. When the heat exchange fan 5 moves towards the side of the second bearing 9, the rubber material of the second bearing 9 can contact and buffer the shaft end of the heat exchange fan 5, thereby protecting the heat exchange fan 5.

[0124] In some embodiments, the inner stator 63 can include a bracket 634. The bracket 634 can be an iron core, for example. The bracket 634 is arranged in the annular inner part surrounded by the outer rotor 62.

[0125] In some embodiments, the inner stator 63 can further include a coil 635. The coil 635 can be a copper coil or an aluminum coil, for example. The coil 635 is wound around the bracket 634. The coil 635 is energized to make the bracket 634 have magnetism. When the driving motor 6 is energized, the current flows through the coil 635 wound around the bracket 634 to generate an induced magnetic field, so that the bracket 634 has magnetism. The induced magnetic field interacts with the magnetic field generated by the outer rotor 62 which is a permanent magnet, so that the outer rotor 62 rotates relative to the inner stator 63. The rotation of the outer rotor 62 in turn drives the heat exchange fan 5 to rotate synchronously.

[0126] In some embodiments, the inner stator 63 can further include a wrapping part 636. The wrapping part 636 wraps around the periphery of the bracket 634 and the coil 635, and is integrally formed with the bracket 634 and the coil 635. When the inner stator 63 is installed, the bracket 634, the coil 635 and the wrapping part 636 are assembled as a whole.

[0127] In some embodiments, the heat exchange fan 5 can further include a fan body 55, which is cylindrically arranged, and the first flange 53 and the second flange 613 are respectively connected to the axial ends of the fan body 55, and the fan body 55 has a spacing with the inner stator 63. The fan shaft 56 is arranged in the fan body 55.

[0128] As shown in FIG. 9, in some embodiments, the heat exchange fan 5 can further include an anti-collision rib 57 arranged at one axial end of the fan body 55, the anti-collision rib 57 is arranged protruding from the fan body 55 along the axial direction of the heat exchange fan 5, and the anti-collision rib 57 has a spacing with the first bearing 7, so that the heat exchange fan 5 can run a certain distance relative to the first bearing 7 when falling, which can play a buffering role, and can also avoid the interference of the first bearing 7 to the heat exchange fan 5 when the heat exchange fan 5 is normally rotating.

[0129] As shown in FIGS. 8 and 9, in some embodiments, the minimum spacing between the fourth flange 614 and the first limiting portion 52 is s, and the minimum spacing between the anti-collision rib 57 and the first bearing 7 is b, wherein in the case of s>b, when the heat exchange fan 5 slides along the axial direction due to falling, the anti-collision rib 57 can impact and contact the first bearing 7, the first bearing 7 can play a buffering role to the anti-collision rib 57, and then play a buffering role to the heat exchange fan 5, thereby avoiding the heat exchange fan 5 from impacting the inner stator 63, so as to avoid the damage of the heat exchange fan 5.

[0130] In the case of s>b, when the anti-collision rib 57 impacts and contacts the first bearing 7, the first limiting portion 52 does not contact the fourth flange 614, avoiding the damage of the first limiting portion 52 and the fourth flange 614 caused by the impact, and thereby avoiding the damage of the heat exchange fan 5.

[0131] In some embodiments, the minimum spacing between the fan body 55 and the inner stator 63 is a, wherein in the case of a>b, when the anti-collision rib 57 impacts and contacts the first bearing 7, the fan body 55 does not contact the inner stator 63, avoiding the damage of the fan body 55 and the inner stator 63 caused by the impact, and thereby avoiding the damage of the heat exchange fan 5 and the driving motor 6.

[0132] In some embodiments, the minimum spacing between the first limiting portion 52 and the second limiting portion 611 is n, wherein in the case of n>b, when the anti-collision rib 57 impacts and contacts the first bearing 7, the first limiting portion 52 does not contact the second limiting portion 611, avoiding the damage of the first limiting portion 52 and the second limiting portion 611 caused by the impact, and thereby avoiding the damage of the heat exchange fan 5 and the driving motor 6.

[0133] In some embodiments, the minimum distance between the first limiting portion 52 and the second flange 613 is f, wherein, in the case of f>1mm, the first limiting portion 52 can play a role in preventing dust and moisture from entering the inside of the motor housing 61, and in the case of f≤1mm, the distance between the first limiting portion 52 and the second flange 613 is too small, and the first limiting portion 52 and the second flange 613 can interfere with each other when the heat exchange fan 5 rotates, thereby affecting the rotation of the heat exchange fan 5. Therefore, f>1mm can avoid the contact between the first limiting portion 52 and the second flange 613 when the heat exchange fan 5 rotates, thereby avoiding the damage of the heat exchange fan 5.

[0134] In some embodiments, the minimum distance between the second limiting portion 611 and the first flange 53 is p, wherein, in the case of p>1mm, the second limiting portion 611 can play a role in preventing dust and moisture from entering the inside of the motor housing 61, and in the case of p≤1mm, the distance between the second limiting portion 611 and the first flange 53 is too small, and the second limiting portion 611 and the first flange 53 can interfere with each other when the heat exchange fan 5 rotates, thereby affecting the rotation of the heat exchange fan 5. Therefore, p>1mm can avoid the contact between the second limiting portion 611 and the first flange 53 when the heat exchange fan 5 rotates, thereby avoiding the damage of the heat exchange fan 5.

[0135] According to another embodiment of the present application, as shown in FIGS. 14-17, an air conditioner indoor unit 100 is provided, which is different from the air conditioner indoor unit 100 in some of the above embodiments in that the air conditioner indoor unit 100 is not provided with the first limiting portion 52, the second limiting portion 611, and the fourth flange 614, and the inside of the inner stator 63 of the air conditioner indoor unit 100 is provided with an assembly cavity 64, which is a through cavity penetrating the inner stator 63 in the length direction of the main body 300.

[0136] In some embodiments, the first bearing 7 is arranged in the assembly cavity 64.

[0137] In some embodiments, the first bearing 7 can include a shaft sleeve 71, which cooperates with the assembly cavity 64 to limit the first bearing 7 in the assembly cavity 64.

[0138] In some embodiments, the shaft sleeve 71 has a closed end 711 away from the heat exchange fan 5, and an open end 712 close to the heat exchange fan 5, i.e., in the length direction of the main body 300, the end of the shaft sleeve 71 away from the heat exchange fan 5 is provided in a closed structure.

[0139] In some embodiments, the first bearing 7 can include a sliding piece 72 arranged inside the shaft sleeve 71.

[0140] In some embodiments, the end of the heat exchange fan 5 is provided with a fan shaft 56, the fan shaft 56 passes through the opening end 712 and the sliding piece 72, and a gap is provided between the fan shaft 56 and the closed end 711, that is, when the heat exchange fan 5 rotates normally, the fan shaft 56 does not abut against the closed end 711. In this way, when the heat exchange fan 5 rotates normally, the fan shaft 56 does not contact the closed end 711, so as to avoid the mutual contact between the fan shaft 56 and the closed end 711, which affects the rotation. In addition, when the heat exchange fan 5 is dropped and moves along the axial direction, the fan shaft 56 can abut against the closed end 711, so as to provide a buffering force for the fan shaft 56, prevent the heat exchange fan 5 from being damaged due to impact, and prevent the heat exchange fan 5 from impacting the driving motor 6 and causing damage to the driving motor 6 or impacting the base 4 and causing damage to the base 4.

[0141] In some embodiments, the closed end 711 can prevent dust from entering the inside of the first bearing 7, thereby preventing damage to the first bearing 7.

[0142] As shown in FIGS. 17-21, in some embodiments, the assembly cavity 64 can include a first assembly portion 641, which is arranged inside the assembly cavity 64 and recessed towards the center of the assembly cavity 64.

[0143] In some embodiments, the shaft sleeve 71 can include a first matching portion 713, which is arranged protruding towards the periphery of the shaft sleeve 71 and abuts against the first assembly portion 641.

[0144] Illustratively, the first assembly portion 641 is arranged as a concave cavity, and the first matching portion 713 is arranged as a flange, which is arranged closer to the heat exchange fan 5 relative to the first assembly portion 641. In this way, when the first matching portion 713 moves away from the heat exchange fan 5, the first matching portion 713 can press the first assembly portion 641, so as to prevent the shaft sleeve 71 from moving away from the heat exchange fan 5 and separating from the assembly cavity 64.

[0145] In some embodiments, the assembly cavity 64 can further include a second assembly portion 642, which is arranged at the opening of the assembly cavity 64 close to the heat exchange fan 5 and recessed towards the periphery of the assembly cavity 64.

[0146] In some embodiments, the shaft sleeve 71 further includes a second matching portion 714, which is arranged at the opening end 712 of the shaft sleeve 71 and protrudes towards the periphery of the shaft sleeve 71, and abuts against the second assembly portion 642.

[0147] Illustratively, the second assembly portion 642 is provided as a concave cavity, and the second matching portion 714 is provided as a flange. The second matching portion 714 is arranged close to the heat exchange fan 5 relative to the second assembly portion 642, so that when the shaft sleeve 71 moves away from the heat exchange fan 5, the second matching portion 714 can press the second assembly portion 642, preventing the shaft sleeve 71 from moving away from the heat exchange fan 5 and disassembling from the assembly cavity 64.

[0148] In some embodiments, the driving motor 6 can further include a clamping plate 65 arranged at one end of the motor housing 61 away from the heat exchange fan 5. The clamping plate 65 is detachably connected with the motor housing 61, and the inner stator 63 is limited inside the clamping plate 65 and the motor housing 61.

[0149] In the related art, an outer rotor motor is a common type of motor, which includes an outer rotor and a stator. In an air conditioner indoor unit using the outer rotor motor, the heat exchange fan is prone to move in the axial direction, which can cause the outer rotor to collide with the stator, resulting in damage to the outer rotor motor and the heat exchange fan, and reducing the service life of the air conditioner indoor unit.

[0150] To solve the problem of component damage caused by the axial movement of the heat exchange fan, according to another embodiment of the present application, an air conditioner indoor unit 100 is provided. A buffer 69 is arranged in the motor housing 61, and the buffer 69 is in contact with the connecting shaft 60. The buffer 69 blocks and buffers the outer rotor 62 through the connecting shaft 60, preventing the outer rotor 62 from colliding with the inner stator 63 and damaging the driving motor 6 and the heat exchange fan 5.

[0151] In the embodiment of the present application, the air conditioner indoor unit 100 includes the main body 300, the casing 3, the heat exchange air inlet 31, the heat exchange air outlet 32, the outer cover 33, the first cavity 331, the base 4, the indoor heat exchanger 1001, and the heat exchange fan 5 in the above-mentioned embodiments. The main body 300 includes the casing 3, which is located at the top or upper space of the room. The casing 3 has the heat exchange air inlet 31 extending along the length direction at the top and the heat exchange air outlet 32 extending along the length direction at the bottom. The outer cover 33 inside the casing 3 forms the first cavity 331 with an opening facing the rear side of the casing 3, and the heat exchange air inlet 31 is arranged at the top of the outer cover 33 and communicates with the first cavity 331. The base 4 is located in the first cavity 331 and detachably connected with the outer cover 33. The front bottom opening of the base 4 corresponds to the front bottom opening of the outer cover 33 to form the heat exchange air outlet 32, and the base 4 has the heat exchange air duct 41 inside. The indoor heat exchanger 1001 is arranged in the first cavity 331, and the heat exchange fan 5 is arranged in the heat exchange air duct 41 of the base 4, with the axial direction consistent with the length direction of the main body 300 and located at the leeward side of the indoor heat exchanger 1001.

[0152] In some embodiments, as shown in FIGS. 22 and 23, the air conditioner indoor unit 100 further comprises an electrical box 8, which is mounted on the base 4 and is arranged close to the driving motor 6. The electrical box 8 is internally provided with electrical components such as a control board 81, which is connected to the driving motor 6 through a wire to control the operation of the driving motor 6.

[0153] In some embodiments, as shown in FIGS. 24, 25 and 29, one end of the heat exchange fan 5 in the length direction is connected with a fan shaft 56, and the fan shaft 56 is connected with a second bearing 9. The base 4 is provided with a bearing seat 44, which is arranged close to the end of the fan shaft 56 of the heat exchange fan 5. The second bearing 9 is mounted on the bearing seat 44, so that the fan shaft 56 is connected to the base 4 through the second bearing 9, thereby supporting the heat exchange fan 5 to run and increasing the stability of the heat exchange fan 5 when running.

[0154] In some embodiments, the bearing seat 44 is made of soft materials such as rubber or silica gel, so as to facilitate the mounting of the second bearing 9 on the bearing seat 44.

[0155] In some embodiments, as shown in FIG. 26, the air conditioner indoor unit 100 comprises a driving motor 6, which is arranged on the right side of the heat exchange fan 5 and is used to drive the heat exchange fan 5 to run. The driving motor 6 is mounted on the base 4 and is located inside the casing 3. The driving motor 6 and the heat exchange fan 5 are arranged along the axial direction of the heat exchange fan 5.

[0156] In some embodiments of the present application, the driving motor 6 is an outer rotor motor.

[0157] In some embodiments, the driving motor 6 comprises an outer rotor 62, which is the rotatable part of the driving motor 6 and is used to drive the heat exchange fan 5 to rotate synchronously.

[0158] In some embodiments, as shown in FIG. 27, the outer rotor 62 is usually mounted in a connecting shell 50, which is connected to one end of the heat exchange fan 5 facing the driving motor 6. It should be noted that the connecting shell 50 rotates synchronously with the outer rotor 62.

[0159] The connecting shell 50 can be detachably connected with the heat exchange fan 5 or can be integrally formed with the heat exchange fan 5. In the embodiments of the present application, the heat exchange fan 5 is integrally formed with the connecting shell 50. The integral forming can increase the firmness of the connection between the heat exchange fan 5 and the connecting shell 50 and can facilitate the connection between the heat exchange fan 5 and the connecting shell 50.

[0160] In some embodiments, as shown in FIGS. 26 and 27, the driving motor 6 further comprises an inner stator 63, which is the non-rotatable part of the driving motor 6. The inner stator 63 cooperates with the outer rotor 62, and the outer rotor 62 can rotate relative to the inner stator 63.

[0161] In some embodiments, the outer rotor 62 is provided with a receiving cavity 621, and part of the inner stator 63 extends into the receiving cavity 621 and cooperates with the outer rotor 62.

[0162] In some embodiments, a gap is provided between the outer rotor 62 and the inner stator 63 along the radial direction of the inner stator 63, so as to prevent the inner stator 63 from contacting the outer rotor 62 and generating friction or collision when the outer rotor 62 rotates relative to the inner stator 63, thereby ensuring the reliability of the rotation of the connecting shell 50.

[0163] In some embodiments, as shown in FIG. 28, the connecting shell 50 is provided with a receiving portion 501 at the end away from the heat exchange fan 5, the outer rotor 62 is arranged in the receiving portion 501, the receiving cavity 621 is in communication with the receiving portion 501, and at least part of the inner stator 63 is arranged in the receiving portion 501 so as to cooperate with the outer rotor 62.

[0164] Illustratively, the receiving portion 501 is a cavity provided at the end of the connecting shell 50 facing the inner stator 63, and the opening of the cavity is arranged to face the inner stator 63, so that the side of the inner stator 63 facing the heat exchange fan 5 can extend into the cavity, thereby cooperating with the outer rotor 62.

[0165] The receiving portion 501 is provided with a peripheral wall arranged along the circumferential direction thereof, and the peripheral wall is located at the side of the connecting shell 50 facing the inner stator 63.

[0166] In some embodiments, as shown in FIG. 29, a first gap 601 is provided between the side of the inner stator 63 facing the heat exchange fan 5 and the side of the connecting shell 50 facing the inner stator 63 along the axial direction of the heat exchange fan 5, so as to prevent the inner stator 63 from contacting the connecting shell 50 and generating friction when the connecting shell 50 rotates relative to the inner stator 63, thereby affecting the rotation of the outer rotor 62.

[0167] In some embodiments, as shown in FIG. 27, the driving motor 6 further comprises a connecting shaft 60, the axial direction of the connecting shaft 60 is arranged along the axial direction of the heat exchange fan 5, and one end of the connecting shaft 60 is connected to the connecting shell 50.

[0168] In some embodiments, as shown in FIG. 25, in order to facilitate the installation and fixation of the inner stator 63, the inner stator 63 is generally arranged in the motor housing 61, and the motor housing 61 is installed on the base 4 by means of fasteners such as bolts or screws, so as to ensure the firmness of the installation of the inner stator 63.

[0169] In some embodiments, as shown in FIG. 30, the outer periphery of the motor housing 61 is provided with a connecting portion 616, and the connecting portion 616 is connected to the base 4 by means of fasteners such as bolts or screws, so as to install the motor housing 61 on the base 4.

[0170] In some embodiments, the number of connecting portions 616 can be set to two, and the two connecting portions 616 are correspondingly arranged along the thickness direction of the shell 3 to increase the firmness of the connection between the motor housing 61 and the base 4.

[0171] During the production and transportation of the air conditioner indoor unit 100, the heat exchange fan 5 is prone to move along its axial direction, which causes the heat exchange fan 5 to easily collide with the shell 3 or the driving motor 6 and other components, resulting in damage to the heat exchange fan 5 and the driving motor 6.

[0172] Since the bearing seat 44 is located at the end of the heat exchange fan 5 axially away from the driving motor 6, and the bearing seat 44 is usually made of soft materials such as rubber or silicone, in some embodiments, the bearing seat 44 is used to limit and block the movement of the heat exchange fan 5 along the axial direction of the heat exchange fan 5 towards the bearing seat 44, so that the bearing seat 44 buffers the heat exchange fan 5.

[0173] Specifically, the bearing seat 44 and the end of the heat exchange fan 5 close to the bearing seat 44 are arranged opposite to each other along the axial direction of the heat exchange fan 5; when the heat exchange fan 5 moves along its axial direction away from the bearing seat 44 of the driving motor 6, the end of the heat exchange fan 5 close to the bearing seat 44 contacts the bearing seat 44, so that the bearing seat 44 buffers and protects the heat exchange fan 5.

[0174] Since the heat exchange fan 5 is connected with the connecting shell 50, and the connecting shaft 60 is connected with the connecting shell 50, when the heat exchange fan 5 moves along its axial direction towards the inner stator 63, the connecting shell 50 and the connecting shaft 60 will also move axially synchronously, therefore, in some embodiments of the present application, as shown in FIG. 27, a buffer 69 is arranged on the inner wall of the motor housing 61 towards the heat exchange fan 5, so that the buffer 69 cooperates with the end of the connecting shaft 60 away from the heat exchange fan 5; when the heat exchange fan 5 drives the connecting shaft 60 to move axially through the connecting shell 50, the connecting shaft 60 contacts the buffer 69, so that the buffer 69 blocks the connecting shaft 60, preventing the connecting shell 50 from continuing to move axially, and the buffer 69 can also prevent the connecting shaft 60 from rigidly colliding with the motor housing 61, thereby avoiding damage to the driving motor 6 and the heat exchange fan 5.

[0175] It should be noted that the buffer 69 can be made of soft materials such as rubber or silicone.

[0176] In some embodiments, the bearing seat 44 and the buffer 69 are correspondingly arranged at both ends of the heat exchange fan 5 in the axial direction; when the heat exchange fan 5 moves along its axial direction, the heat exchange fan 5 contacts the bearing seat 44 or the buffer 69 to prevent the heat exchange fan 5 from rigidly colliding with other components.

[0177] In some embodiments, the projection of the connecting shaft 60 along the axial direction of the heat exchange fan 5 is located within the projection of the side of the buffer 69 facing the connecting shaft 60 along the axial direction of the heat exchange fan 5, so that the buffer 69 can be in sufficient contact with the connecting shaft 60, and the buffer 69 can be in reliable contact with the connecting shaft 60 when the heat exchange fan 5 moves along the axial direction thereof toward the inner stator 63, thereby preventing the heat exchange fan 5 from continuing to move toward the inner stator 63.

[0178] In some embodiments, as shown in FIG. 30, the center of the buffer 69 is located on the axis of the connecting shaft 60, the outer diameter of the end of the connecting shaft 60 away from the heat exchange fan 5 is V, the distance from any point on the outer periphery of the side of the buffer 69 facing the connecting shaft 60 to the axis of the connecting shaft 60 is T / 2, and T and V satisfy the relationship T > V, so that the buffer 69 can be in reliable contact with the connecting shaft 60.

[0179] If T = V, the area of the end of the connecting shaft 60 facing the buffer 69 is the same as the area of the side of the buffer 69 facing the connecting shaft 60, and if the connecting shaft 60 deviates along the radial direction of the heat exchange fan 5, the connecting shaft 60 cannot be in sufficient contact with the buffer 69, which can reduce the buffering effect of the buffer 69 on the heat exchange fan 5.

[0180] If T < V, the area of the end of the connecting shaft 60 facing the buffer 69 is greater than the area of the side of the buffer 69 facing the connecting shaft 60, the buffer 69 cannot be in sufficient contact with the connecting shaft 60, the buffering effect of the buffer 69 on the heat exchange fan 5 is poor, and when the heat exchange fan 5 moves along the axial direction thereof toward the inner stator 63, the connecting shaft 60 can be in contact with the inner wall of the motor housing 61 facing the heat exchange fan 5, which can cause damage to the heat exchange fan 5.

[0181] In some embodiments, as shown in FIG. 29, there is a second gap 602 between the end of the connecting shaft 60 away from the heat exchange fan 5 and the side of the buffer 69 facing the connecting shaft 60 along the axial direction of the heat exchange fan 5, so as to prevent the connecting shaft 60 from being in contact with the buffer 69 when the heat exchange fan 5 does not move axially, thereby affecting the operation of the heat exchange fan 5.

[0182] In some embodiments, the size of the first gap 601 along the axial direction of the heat exchange fan 5 is L1, the size of the second gap 602 along the axial direction of the heat exchange fan 5 is L2, and L1 and L2 satisfy the relationship L1 > L2, so that when the heat exchange fan 5 moves axially toward the inner stator 63, the connecting shaft 60 can first interact with the buffer 69, so that the buffer 69 prevents the heat exchange fan 5 from continuing to move through the connecting shaft 60.

[0183] If L1

[0184] If L1=L2, when the heat exchange fan 5 moves towards the inner stator 63, the bottom wall of the accommodating portion 501 contacts the inner stator 63, the connecting shaft 60 contacts the buffer 69, the buffer 69 can play a certain buffering effect on the connecting shaft 60, but the bottom wall of the accommodating portion 501 collides with the inner stator 63, the heat exchange fan 5 and the inner stator 63 are impacted, the heat exchange fan 5 and the inner stator 63 are easily damaged, and the buffering effect of the buffer 69 is not good.

[0185] In some embodiments, as shown in FIG. 27, the inner wall of the motor housing 61 is provided with a constraint portion 615, the constraint portion 615 protrudes from the inner wall of the motor housing 61, and the constraint portion 615 is used to constrain the inner stator 63, so that the inner stator 63 is installed in the motor housing 61.

[0186] The outer periphery of the inner stator 63 is provided with an adapting portion 632, the adapting portion 632 on the side facing away from the heat exchange fan 5 cooperates with the side of the constraint portion 615 facing away from the heat exchange fan 5, so as to prevent the inner stator 63 from continuing to move axially in the direction close to the heat exchange fan 5 along the axial direction of the heat exchange fan 5, thereby limiting the position of the inner stator 63.

[0187] In some embodiments, as shown in FIG. 29, the end of the connecting shell 50 away from the heat exchange fan 5 extends into the motor housing 61, and the end of the connecting shell 50 extending into the motor housing 61 has a third gap 603 along the axial direction of the heat exchange fan 5 with the side of the constraint portion 615 facing the connecting shell 50, so as to prevent the connecting shell 50 from contacting the constraint portion 615 and generating friction when the connecting shell 50 rotates relative to the inner stator 63, thereby ensuring the reliability of the rotation of the connecting shell 50.

[0188] In some embodiments, the third gap 603 has a size L3 along the axial direction of the heat exchange fan 5, and L3 and L2 satisfy the relationship L3>L2, so that when the heat exchange fan 5 moves towards the inner stator 63 along the axial direction thereof, the connecting shaft 60 can first interact with the buffer 69, so that the buffer 69 prevents the heat exchange fan 5 from continuing to move through the connecting shaft 60.

[0189] If L3

[0190] If L3=L2, when the heat exchange fan 5 moves towards the inner stator 63, the connecting shell 50 contacts the constraint part 615, and the connecting shaft 60 contacts the buffer 69. Although the buffer 69 can buffer the connecting shaft 60 to a certain extent, the connecting shell 50 and the constraint part 615 collide with each other, and the heat exchange fan 5 and the connecting shell 50 are impacted, so the heat exchange fan 5 and the connecting shell 50 are easily damaged, and the buffering effect of the buffer 69 is not good.

[0191] It should be noted that in the air conditioner indoor unit 100 of the embodiment of the present application, other gaps can also be formed between the connecting shell 50 and the inner stator 63 and between the connecting shell 50 and the motor housing 61 along the axial direction of the heat exchange fan 5, which will not be listed one by one here.

[0192] In the gaps formed between the connecting shell 50 and the inner stator 63 and between the connecting shell 50 and the motor housing 61 along the axial direction of the heat exchange fan 5, the second gap 602 between the connecting shaft 60 and the buffer 69 has the smallest axial dimension of the heat exchange fan 5, so as to ensure that when the heat exchange fan 5 moves towards the inner stator 63 along the axial direction thereof, the connecting shaft 60 first contacts the buffer 69.

[0193] In the above-mentioned air conditioner indoor unit 100, when the heat exchange fan 5 moves away from the driving motor 6 along the axial direction of the heat exchange fan 5, the heat exchange fan 5 contacts the bearing seat 44, and the bearing seat 44 buffers the heat exchange fan 5 to avoid hard collision between the heat exchange fan 5 and the casing 3 or other components.

[0194] When the heat exchange fan 5 moves towards the inner stator 63 along the axial direction of the heat exchange fan 5, the heat exchange fan 5 drives the connecting shaft 60 to move synchronously, and the connecting shaft 60 first contacts the buffer 69. The buffer 69 buffers the connecting shaft 60 to avoid collision between the accommodating part 501 and the inner stator 63 or collision between the connecting shell 50 and the constraint part 615, so as to avoid damage to the heat exchange fan 5 and the driving motor 6.

[0195] It should be noted that since the motor housing 61 is installed on the base 4, and the inner stator 63 is installed on the motor housing 61, the inner stator 63 is fixedly connected to the base 4. When the heat exchange fan 5 moves towards the inner stator 63 along the axial direction thereof, the position of the inner stator 63 relative to the base 4 does not change, the heat exchange fan 5 drives the connecting shaft 60 to move synchronously, the connecting shaft 60 moves axially relative to the inner stator 63, and the connecting shaft 60 contacts the buffer 69.

[0196] In order to facilitate the inner stator 63 to be arranged in the motor housing 61 or to be taken out of the motor housing 61, in some embodiments, the motor housing 61 is designed as a split structure.

[0197] Specifically, as shown in FIG. 30, the motor housing 61 comprises a motor casing 67, the motor casing 67 is internally defined with a casing through cavity 671, the motor casing 67 is arranged along the length direction of the casing 3, and the inner stator 63 is arranged at least partially in the motor casing 67; the motor casing 67 is provided with a through port 672, and the inner stator 63 is arranged in or out of the casing through cavity 671 through the through port 672.

[0198] It should be noted that the through port 672 is an opening of the through cavity away from the heat exchange fan 5.

[0199] In some embodiments, the outer diameter of the inner stator 63 is less than or equal to the opening outer diameter of the through port 672, so that the inner stator 63 can be in and out of the casing through cavity 671 through the through port 672.

[0200] In some embodiments, the inner diameter of at least part of the casing through cavity 671 is greater than or equal to the outer diameter of the inner stator 63, so that the inner stator 63 is arranged in the casing through cavity 671.

[0201] In some embodiments, as shown in FIG. 29, the opening of the connecting casing 50 away from the heat exchange fan 5 extends into the casing through cavity 671, so that part of the inner stator 63 can be arranged in the accommodating part 501 and cooperates with the outer rotor 62.

[0202] It should be noted that the connecting part 616 is arranged on the outer periphery of the motor casing 67, so that the motor casing 67 is mounted on the base 4. The restraining part 615 is arranged on the inner wall of the motor casing 67 to limit the arrangement position of the inner stator 63 in the casing through cavity 671.

[0203] In some embodiments, as shown in FIG. 30, the motor housing 61 further comprises a motor cover 68, which is arranged at the through port 672 in a openable and closable manner, used to seal the opening of the casing through cavity 671 away from the heat exchange fan 5, so that the inner stator 63 is firmly arranged in the casing through cavity 671.

[0204] In some embodiments, the motor cover 68 is detachably connected with the motor casing 67, so that the motor cover 68 is arranged at the through port 671 in an openable and closable manner. When the motor cover 68 and the motor casing 67 are connected with each other, the motor cover 68 is closed; when the motor cover 68 and the motor casing 67 are separated from each other, the motor cover 68 is opened.

[0205] In some embodiments, as shown in FIG. 27 and FIG. 30, the outer periphery of the inner stator 63 towards the side of the motor cover 68 is provided with a damping member 600, which is used to absorb and buffer the vibration generated by the inner stator 63 when the driving motor 6 works.

[0206] In some embodiments, the damping member 600 can be made of rubber material, which can provide better buffering effect.

[0207] In some embodiments, the motor cover 68 is provided with a fixing portion 681 which is in communication with the interior of the motor shell 61, and the buffer 69 is arranged on the fixing portion 681.

[0208] In some embodiments, the fixing portion 681 is an opening arranged on the middle portion of the motor cover 68.

[0209] In some embodiments, the fixing portion 681 is arranged in a circular shape.

[0210] In some embodiments, the buffer 69 is provided with a first stop portion 691 which cooperates with the side of the motor cover 68 facing the through cavity 671 of the shell, as shown in FIG. 33.

[0211] In some embodiments, the buffer 69 is provided with a second stop portion 692 which is arranged axially opposite to the first stop portion 691 along the buffer 69, and cooperates with the side of the motor cover 68 facing away from the through cavity 671 of the shell.

[0212] In some embodiments, the second stop portion 692 and the first stop portion 691 together define a through portion 693 along the axial direction of the buffer 69, and the through portion 693 is arranged in the fixing portion 681.

[0213] In some embodiments, when the fixing portion 681 is an opening arranged on the motor cover 68, the first stop portion 691 is in contact with the side of the motor cover 68 facing the through cavity 671 of the shell, the through portion 693 is arranged in the fixing portion 681, and the second stop portion 692 is in contact with the side of the motor cover 68 facing away from the through cavity 671 of the shell, so as to install the buffer 69 on the motor cover 68, as shown in FIG. 31.

[0214] It should be noted that although the first stop portion 691 and the second stop portion 692 interfere with the fixing portion 681, so that the through portion 693 cannot be arranged in the fixing portion 681, since the buffer 69 is made of soft materials such as rubber or silicone, the through portion 693 can be arranged in the fixing portion 681 by deforming the buffer 69, so as to install the buffer 69 on the motor cover 68.

[0215] In some embodiments, the air conditioner indoor unit 100 further comprises a motor shield 66 arranged on the outer periphery of the motor shell 61, the motor shield 66 is connected to the motor shell 61 and the base 4, and the motor shield 66 and the base 4 jointly clamp the motor shell 61, thereby increasing the firmness of the connection between the motor shell 61 and the base 4, as shown in FIG. 24.

[0216] The motor shield 66 is provided with an assembling portion 661, which is connected with the base 4 by a fastener such as a bolt or a screw, so that the motor shield 66 is mounted on the base 4.

[0217] In some embodiments, as shown in FIG. 30, the connecting portion 616 is arranged corresponding to the assembling portion 661, so that the same fastener can simultaneously connect the motor shield 66, the motor housing 61 and the base 4, thereby increasing the assembly efficiency of the motor shield 66, the motor housing 61 and the base 4, and saving the number of fasteners used.

[0218] The air conditioner indoor unit 100 of the embodiments of the present application sets the fan shaft 56 away from one end of the driving motor 6, and sets the bearing seat 44 on the base 4, so that the fan shaft 56 is connected with the bearing seat 44 through the second bearing 9, so that the base 4 supports the heat exchange fan 5, thereby increasing the reliability and stability of the operation of the heat exchange fan 5; and the bearing seat 44 is arranged corresponding to one end of the heat exchange fan 5 away from the driving motor 6, when the heat exchange fan 5 moves along the axial direction of the heat exchange fan 5 away from the driving motor 6, the heat exchange fan 5 and the bearing seat 44 are in contact with each other, so that the bearing seat 44 can buffer the heat exchange fan 5, avoiding the hard collision between the heat exchange fan 5 and the casing 3 and damage.

[0219] The air conditioner indoor unit 100 of the embodiments of the present application sets the buffer 69 on the inner wall of the motor housing 61 facing the heat exchange fan 5, when the heat exchange fan 5 moves towards the inner stator 63, the heat exchange fan 5 drives the connecting shaft 60 to move synchronously, the connecting shaft 60 and the buffer 69 are in contact with each other, so that the buffer 69 buffers the connecting shaft 60, avoiding the hard collision between the connecting shaft 60 and the inner wall of the motor housing 61, and damaging the heat exchange fan 5 and the outer rotor 62.

[0220] In the related art, the outer rotor motor is a common type of motor, in the air conditioner indoor unit using the outer rotor motor, the outer rotor and the stator usually have a gap along the radial direction of the stator, and the gap is arranged along the circumferential direction of the stator, to ensure the reliability when the outer rotor and the stator rotate relatively, but this also causes the outer rotor to be in a suspended state relative to the stator, and the outer rotor is easy to be offset downward under the gravity of the heat exchange fan, resulting in uneven distribution of the gap, and the heat exchange fan is easy to produce large vibration and noise when operating.

[0221] In order to solve the problem of the above-mentioned outer rotor deviation, in some embodiments, as shown in Figure 27, the first bearing 7 is arranged at the two ends of the connecting shaft 60 in the axial direction, so that the connecting shaft 60 is connected to the connecting shell 50 and the inner stator 63 through the two first bearings 7, so that the connecting shaft 60 supports the relative rotation between the outer rotor 62 and the inner stator 63, avoids the axial downward deviation of the outer rotor 62 from the axis of the inner stator 63 under the action of the gravity of the heat exchange fan 5, and ensures that the outer rotor 62 and the inner stator 63 are coaxially arranged.

[0222] In some embodiments, the driving motor 6 includes a connecting shaft 60, the axial direction of the connecting shaft 60 is arranged along the axial direction of the heat exchange fan 5; one end of the connecting shaft 60 is connected to the connecting shell 50, and the other end of the connecting shaft 60 is connected to the inner stator 63, so that the connecting shaft 60 restricts the inner stator 63 and the connecting shell 50, thereby making the outer rotor 62 and the inner stator 63 coaxially arranged, and further increasing the reliability of the relative rotation between the two.

[0223] In some embodiments, the connecting shaft 60 is provided with a first bearing 7 at one end connected to the inner stator 63, and the connecting shaft 60 is rotatably connected to the inner stator 63 through the first bearing 7.

[0224] In some embodiments, the inner stator 63 is further provided with a first mounting portion 631, the first mounting portion 631 is provided with a shaft sleeve 71, the shaft sleeve 71 is used to connect the first bearing 7, and the first bearing 7 arranged on the end of the connecting shaft 60 facing the inner stator 63 is located in the shaft sleeve 71 of the first mounting portion 631, so that the connecting shaft 60 and the inner stator 63 are connected to each other.

[0225] In some embodiments, the first mounting portion 631 is a through cavity arranged on the inner stator 63, and the first mounting portion 631 is arranged along the axial direction of the heat exchange fan 5.

[0226] The connecting shaft 60 is provided with a first bearing 7 at one end connected to the connecting shell 50, and the connecting shaft 60 is rotatably connected to the connecting shell 50 through the first bearing 7.

[0227] As shown in Figure 28, the connecting shell 50 is provided with a second mounting portion 502, the second mounting portion 502 is provided with a shaft sleeve 71, the shaft sleeve 71 is used to connect the first bearing 7, and the first bearing 7 arranged on the end of the connecting shaft 60 facing the connecting shell 50 is arranged in the shaft sleeve 71 of the second mounting portion 502, so that the connecting shaft 60 and the connecting shell 50 are connected to each other.

[0228] In some embodiments, the second mounting portion 502 is a cavity arranged on the connecting shell 50, the second mounting portion 502 is arranged along the axial direction of the heat exchange fan 5, the second mounting portion 502 includes an opening arranged towards the inner stator 63, and the second mounting portion 502 is arranged corresponding to the first mounting portion 631, so that the connecting shaft 60 can pass out of the second mounting portion 502 and extend into the first mounting portion 631.

[0229] The connecting shaft 60 is connected to the connecting shell 50 and the inner stator 63 through the two first bearings 7, so that the connecting shaft 60 supports the relative rotation between the connecting shell 50 and the inner stator 63, avoids the axis of the outer rotor 62 from deviating from the axis of the inner stator 63 under the action of the gravity of the heat exchange fan 5, and thus ensures that the connecting shell 50 and the inner stator 63 are coaxially arranged.

[0230] The air conditioner indoor unit 100 of the embodiment can not only ensure that the heat exchange fan 5 and the driving motor 6 are coaxially arranged, but also protect the heat exchange fan 5 during the production or transportation of the air conditioner indoor unit 100, so as to avoid damage caused by the collision between the heat exchange fan 5 and the driving motor 6.

[0231] To solve the problem of damage caused by the axial movement of the heat exchange fan mentioned above, according to another embodiment of the present application, an air conditioner indoor unit 100 is provided, which is different from the air conditioner indoor unit 100 solving the same problem in some embodiments described above in that the air conditioner indoor unit 100 of the embodiment of the present application no longer sets a buffer 69 in the motor shell 61, but sets a protruding part 503 on the side of the connecting shell 50 away from the heat exchange fan 5, and the protruding part 503 is correspondingly arranged with the shaft sleeve 71. When the heat exchange fan 5 moves towards the inner stator 63, the protruding part 503 and the shaft sleeve 71 contact each other, so that the shaft sleeve 71 can buffer the heat exchange fan 5, and avoid damage caused by the hard collision between the heat exchange fan 5, the connecting shell 50 and the inner stator 63.

[0232] In some embodiments, as shown in FIGS. 34 and 35, the bottom wall of the accommodating part 501 is provided with a protruding part 503, the protruding part 503 is located in the accommodating part 501, and the protruding part 503 is correspondingly arranged with the shaft sleeve 71. When the heat exchange fan 5 moves in the axial direction towards the driving motor 6, the heat exchange fan 5 drives the connecting shell 50 to move synchronously, and the protruding part 503 and the shaft sleeve 71 contact each other, so that the shaft sleeve 71 buffers the connecting shell 50 and the heat exchange fan 5.

[0233] It should be noted that since the shaft sleeve 71 is installed in the first mounting part 631, when the shaft sleeve 71 is located at the end of the first mounting part 631 close to the bottom wall of the accommodating part 501, the protruding part 503 and the shaft sleeve 71 contact each other; when the shaft sleeve 71 is located in the first mounting part 631, the protruding part 503 extends into the first mounting part 631 and contacts the shaft sleeve 71.

[0234] As shown in FIG. 36 and FIG. 37, the protruding portion 503 has a second gap 602 in the axial direction of the heat exchange fan 5 between the end of the protruding portion 503 facing the inner stator 63 and the end of the shaft sleeve 71 facing the connecting shell 50, so as to prevent the protruding portion 503 from contacting the shaft sleeve 71 when the heat exchange fan 5 does not move axially, and to avoid the shaft sleeve 71 interfering with the axial movement of the heat exchange fan 5.

[0235] As shown in FIG. 36 and FIG. 37, the first gap 601 has a size P1 in the axial direction of the heat exchange fan 5, and the second gap 602 has a size P2 in the axial direction of the heat exchange fan 5, and P2 satisfies the relationship P1>P2, so that when the heat exchange fan 5 moves axially towards the inner stator 63, the protruding portion 503 first interacts with the shaft sleeve 71, and the shaft sleeve 71 is prevented from moving further by the protruding portion 503.

[0236] If P1

[0237] If P1=P2, when the heat exchange fan 5 moves towards the inner stator 63, the bottom wall of the accommodating portion 501 contacts the inner stator 63, and the protruding portion 503 contacts the shaft sleeve 71 at this time. Although the shaft sleeve 71 can exert a certain buffering effect on the protruding portion 503, since the bottom wall of the accommodating portion 501 collides with the inner stator 63, at least one of the heat exchange fan 5 and the inner stator 63 is subjected to an impact force, and the heat exchange fan 5 and the inner stator 63 are prone to damage, and the buffering effect of the shaft sleeve 71 is not good.

[0238] As shown in FIG. 35, the inner wall of the motor shell 61 is provided with a constraint portion 615, and the constraint portion 615 is protruded from the inner wall of the motor shell 61. The constraint portion 615 is used to limit the installation position of the inner stator 63 in the motor shell 61 and fix the inner stator 63, so that the inner stator 63 is installed in the motor shell 61.

[0239] The outer periphery of the inner stator 63 is provided with a damping member 600, and the damping member 600 is used to absorb and buffer the vibration generated by the inner stator 63 when the driving motor 6 is working.

[0240] In some embodiments, when the heat exchange fan 5 moves axially towards the side of the driving motor 6 after falling, the protruding portion 503 and the first peripheral wall 506 of the heat exchange fan 5 respectively contact the shaft sleeve 71 and the damping member 600, so as to buffer the heat exchange fan 5 by the shaft sleeve 71 and the damping member 600, and achieve the effect of protecting the heat exchange fan 5.

[0241] In some embodiments, the first peripheral wall 506 is a magnetic annular structure.

[0242] In some embodiments, the constraint part 615 cooperates with the damping part 600 to indirectly constrain the inner stator 63 by the constraint part 615.

[0243] As shown in Fig. 35, the end of the connecting shell 50 away from the heat exchange fan 5 extends into the motor housing 61, so that the end of the inner stator 63 toward the heat exchange fan 5 can extend into the accommodating part 501 and cooperate with the connecting shell 50.

[0244] As shown in Fig. 38, the end of the connecting shell 50 extending into the motor housing 61 and the side of the constraint part 615 toward the connecting shell 50 have a third gap 603 along the axial direction of the heat exchange fan 5, so as to prevent the connecting shell 50 from contacting the constraint part 615 and generating friction when the connecting shell 50 rotates relative to the inner stator 63, thereby ensuring the reliability of the rotation of the connecting shell 50.

[0245] The third gap 603 has a size P3 along the axial direction of the heat exchange fan 5, and P3 and P2 satisfy the relationship P3>P2, so that when the heat exchange fan 5 moves toward the inner stator 63 along the axial direction, the convex part 503 can first interact with the shaft sleeve 71, so that the shaft sleeve 71 prevents the heat exchange fan 5 from continuing to move by the convex part 503.

[0246] If P3

[0247] If P3=P2, when the heat exchange fan 5 moves toward the inner stator 63, the connecting shell 50 contacts the constraint part 615, and at this time, the convex part 503 contacts the shaft sleeve 71. Although the shaft sleeve 71 can exert a certain buffering effect on the convex part 503, the connecting shell 50 and the constraint part 615 also collide with each other, so that the heat exchange fan 5 and the connecting shell 50 are impacted, and the heat exchange fan 5 and the connecting shell 50 are prone to damage. Therefore, the buffering effect of the shaft sleeve 71 is not good.

[0248] In some embodiments, as shown in Fig. 34, the first peripheral wall 506 and the second peripheral wall 507 of the connecting shell 50 surround to form the accommodating part 505, and the end of the motor housing 61 toward the heat exchange fan 5 is arranged in the accommodating part 505, so that the connecting shell 50 cooperates with the motor housing 61.

[0249] In some embodiments, the accommodating portion 505 is a mounting groove provided on the outer periphery of the connecting shell 50; the connecting shell 50 is further provided with a second peripheral wall 507 connected to the bottom wall of the accommodating portion 501, the second peripheral wall 507 is arranged in a spaced manner between the first peripheral wall 506 and the bottom wall of the accommodating portion 501, and is located on the outer periphery of the first peripheral wall 506, so that the first peripheral wall 506, the second peripheral wall 816 and the bottom wall of the accommodating portion 501 cooperatively define the mounting groove.

[0250] As shown in FIG. 38, the end of the motor shell 61 extending into the accommodating portion 505 and the side of the bottom wall facing the inner stator 63 have a fourth gap 604 along the axial direction of the heat exchange fan 5; the fourth gap 604 has an axial dimension P4 along the heat exchange fan 5, and P4 and P2 satisfy the relationship P4>P2, so that when the heat exchange fan 5 moves towards the inner stator 63 along the axial direction, the protruding portion 503 can first interact with the shaft sleeve 71, so that the shaft sleeve 71 prevents the heat exchange fan 5 from continuing to move through the protruding portion 503.

[0251] If P4

[0252] If P4=P2, when the heat exchange fan 5 moves towards the inner stator 63, the motor shell 61 contacts the accommodating portion 505, the protruding portion 503 contacts the shaft sleeve 71, although the shaft sleeve 71 can exert a certain buffering effect on the protruding portion 503, but since the motor shell 61 also collides with the accommodating portion 505, the heat exchange fan 5 and the motor shell 61 are subjected to impact force, and the heat exchange fan 5 and the motor shell 61 are prone to damage, therefore, the buffering effect of the shaft sleeve 71 is not good.

[0253] In some embodiments, as shown in FIG. 38, the inner stator 63 is provided with a blocking portion 633 protruding from the outer periphery of the inner stator 63, the blocking portion 633 is arranged corresponding to the end of the connecting shell 50 extending into the motor shell 61, so as to position the relative arrangement position of the connecting shell 50 and the inner stator 63.

[0254] As shown in FIG. 38, the end of the connecting shell 50 extending into the motor shell 61 and the side of the blocking portion 633 facing the connecting shell 50 have a fifth gap 605 along the axial direction of the heat exchange fan 5, so as to prevent the connecting shell 50 from contacting the restraining portion 615 and generating friction when the connecting shell 50 rotates relative to the inner stator 63, so as to ensure the reliability of the rotation of the connecting shell 50.

[0255] The fifth gap 605 has an axial dimension P5 along the heat exchange fan 5, and P5 and P2 satisfy the relationship P5>P2, so that when the heat exchange fan 5 moves along the axial direction towards the inner stator 63, the convex portion 503 can first interact with the shaft sleeve 71, and the shaft sleeve 71 can prevent the heat exchange fan 5 from continuing to move by the convex portion 503.

[0256] If P5

[0257] If P5=P2, when the heat exchange fan 5 moves along the axial direction towards the inner stator 63, the connecting shell 50 contacts the blocking portion 633, and the convex portion 503 contacts the shaft sleeve 71, so that the shaft sleeve 71 can play a certain buffering effect on the convex portion 503, but since the connecting shell 50 also collides with the blocking portion 633, the heat exchange fan 5 and the connecting shell 50 are impacted, and the heat exchange fan 5 and the connecting shell 50 are prone to damage, so the buffering effect of the shaft sleeve 71 is not good.

[0258] It should be noted that in the air conditioner indoor unit 100 of the embodiment, other gaps can also be formed along the axial direction of the heat exchange fan 5 between the connecting shell 50 and the inner stator 63 and between the connecting shell 50 and the motor housing 61, which will not be enumerated one by one here.

[0259] Among the gaps formed along the axial direction of the heat exchange fan 5 between the connecting shell 50 and the inner stator 63 and between the connecting shell 50 and the motor housing 61, the second gap 602 between the convex portion 503 and the shaft sleeve 71 has the smallest axial dimension along the heat exchange fan 5, so as to ensure that when the heat exchange fan 5 moves along the axial direction towards the inner stator 63, the convex portion 503 first contacts the shaft sleeve 71.

[0260] The projection of the convex portion 503 along the axial direction of the heat exchange fan 5 is located within the projection of the shaft sleeve 71 along the axial direction of the heat exchange fan 5 towards the connecting shell 50, so that the shaft sleeve 71 can fully contact the convex portion 503, and when the heat exchange fan 5 moves along the axial direction towards the inner stator 63, the shaft sleeve 71 can reliably contact the convex portion 503 to prevent the heat exchange fan 5 from continuing to move towards the inner stator 63.

[0261] In some embodiments, the cross-sectional shape of the convex portion 503 along the axial direction of the heat exchange fan 5 is circular, and the center of the convex portion 503 is located on the axis of the shaft sleeve 71; the outer diameter of one end of the convex portion 503 towards the inner stator 63 is D1, and the outer diameter of one end of the shaft sleeve 71 towards the connecting shell 50 is H1, and H1 and D1 satisfy the relationship H1>D1.

[0262] If H1=D1, the area of the protrusion 503 towards one end of the shaft sleeve 71 is the same as the area of the shaft sleeve 71 towards the protrusion 503, if the protrusion 503 deviates along the radial direction of the heat exchange fan 5, the protrusion 503 cannot fully contact the shaft sleeve 71, and the buffering effect of the shaft sleeve 71 on the heat exchange fan 5 can be reduced.

[0263] If H1<D1, the area of the protrusion 503 towards one end of the shaft sleeve 71 is greater than the area of the shaft sleeve 71 towards the protrusion 503, the shaft sleeve 71 cannot fully contact the protrusion 503, the buffering effect of the shaft sleeve 71 on the heat exchange fan 5 is poor, and when the heat exchange fan 5 moves along the axial direction towards the inner stator 63, the protrusion 503 can contact the inner wall of the motor housing 61 towards the heat exchange fan 5, causing damage to the heat exchange fan 5.

[0264] As shown in FIG. 34, the protrusion 503 defines a through portion 504 inside for the connecting shaft 60 to pass through, and the connecting shaft 60 passes through the through portion 504 to connect with the shaft sleeve 71 of the inner stator 63 through the first bearing 7. By arranging the protrusion 503 along the circumferential direction of the connecting shaft 60, the protrusion 503 is prevented from interfering with the connection between the connecting shaft 60 and the inner stator 63.

[0265] As shown in FIG. 39, after the protrusion 503 is provided with the through portion 504, the protrusion 503 is annular towards one end of the inner stator 63, the inner diameter of the protrusion 503 towards one end of the inner stator 63 is D2, and the outer diameter is D1.

[0266] The inner diameter of the shaft sleeve 71 towards one end of the connecting shell 50 is H2, and the outer diameter is H1; H1, H2, D1, and D2 satisfy the relationship D2>H2 and D1

[0267] If D2=H2, the inner diameter of the protrusion 503 is equal to the inner diameter of the shaft sleeve 71, and when the protrusion 503 contacts the shaft sleeve 71, theoretically, the inner wall of the protrusion 503 is aligned with the inner wall of the shaft sleeve 71. If the axes of the protrusion 503 and the shaft sleeve 71 are not collinear, at least part of the protrusion 503 is located in the shaft sleeve 71, and the buffering effect of the shaft sleeve 71 on the heat exchange fan 5 will be weakened.

[0268] If D2<H2, the inner diameter of the protrusion 503 is smaller than the inner diameter of the shaft sleeve 71, and when the protrusion 503 contacts the shaft sleeve 71, at least part of the protrusion 503 is located in the shaft sleeve 71, and the buffering effect of the shaft sleeve 71 on the heat exchange fan 5 will be weakened.

[0269] If D1=H1, the outer diameter of the protruding part 503 is equal to the outer diameter of the shaft sleeve 71, and when the protruding part 503 is in contact with the shaft sleeve 71, theoretically, the outer wall of the protruding part 503 is aligned with the outer wall of the shaft sleeve 71, and if the axes of the protruding part 503 and the shaft sleeve 71 are not collinear, at least part of the protruding part 503 is in contact with the shaft sleeve 71, and the buffering effect of the shaft sleeve 71 on the heat exchange fan 5 will be weakened.

[0270] If D1>H1, the outer diameter of the protruding part 503 is greater than the outer diameter of the shaft sleeve 71, and when the protruding part 503 is in contact with the shaft sleeve 71, at least part of the protruding part 503 is in contact with the shaft sleeve 71, and the buffering effect of the shaft sleeve 71 on the heat exchange fan 5 will be weakened.

[0271] The air conditioner indoor unit of the embodiment of the application, when the heat exchange fan 5 moves along the heat exchange fan 5 axial direction towards the inner stator 63, the heat exchange fan 5 drives the connecting shell 50 to move synchronously, the protruding part 503 extends into the mounting part and is in contact with the shaft sleeve 71, and the shaft sleeve 71 buffers the connecting shell 50 and the heat exchange fan 5 through the protruding part 503, so as to avoid that the bottom wall of the containing part 501 and the inner stator 63 collide with each other or the connecting shell 50 and the motor housing 61 collide with each other, thereby damaging the heat exchange fan 5 and the driving motor 6.

[0272] The air conditioner indoor unit 100 of the embodiment of the application is provided with the protruding part 503 on the side of the connecting shell 50 away from the heat exchange fan 5, and the protruding part 503 is correspondingly arranged with the shaft sleeve 71, when the heat exchange fan 5 moves towards the inner stator 63, the protruding part 503 is in contact with the shaft sleeve 71, so that the shaft sleeve 71 can buffer the heat exchange fan 5, and avoid that the heat exchange fan 5 collides with the inner stator 63 through the connecting shell 50 and is damaged.

[0273] According to an aspect of the application, an air conditioner indoor unit is provided, comprising:

[0274] A main body, a vertical direction of the main body is a height direction of the main body, a horizontal direction of the main body is a length direction of the main body, and a first cavity is formed in the main body;

[0275] The main body comprises:

[0276] A shell;

[0277] A heat exchange air inlet, which is in communication with the first cavity;

[0278] A heat exchange air outlet, which is in communication with the first cavity;

[0279] A base, which is arranged in the first cavity, and a heat exchange air duct is formed in the base;

[0280] A heat exchange fan is arranged in the heat exchange air duct, and an axial direction of the heat exchange fan is the same as a length direction of the main body; one end of the axial direction of the heat exchange fan is provided with a first limiting part, and the first limiting part extends along the axial direction of the heat exchange fan;

[0281] A driving motor is arranged at one end of the heat exchange fan provided with the first limiting part, and the driving motor is used for driving the heat exchange fan to rotate;

[0282] The driving motor comprises:

[0283] A motor shell is fixedly connected with the base, and one end of the motor shell towards the heat exchange fan is provided with a second limiting part;

[0284] An outer rotor is connected with the heat exchange fan, and a rotation axis of the outer rotor is coaxially arranged with a rotation axis of the heat exchange fan;

[0285] An inner stator is arranged in the interior of the motor shell, and the outer rotor can rotate relative to the inner stator;

[0286] A spacing is arranged between the first limiting part and the second limiting part, and when the heat exchange fan moves along the axial direction, the first limiting part and the second limiting part abut.

[0287] According to another aspect of the present application, an air conditioner indoor unit is provided, comprising:

[0288] A main body, a vertical direction of the main body is a height direction of the main body, a horizontal direction of the main body is a length direction of the main body, and a first cavity is formed in the main body;

[0289] The main body comprises:

[0290] A shell;

[0291] A heat exchange air inlet, which is in communication with the first cavity;

[0292] A heat exchange air outlet, which is in communication with the first cavity;

[0293] A base, which is arranged in the first cavity, and a heat exchange air duct is formed in the base;

[0294] A heat exchange fan, which is arranged in the heat exchange air duct, and an axial direction of the heat exchange fan is the same as the length direction of the main body, and an end of the heat exchange fan is provided with a fan shaft;

[0295] A driving motor, which is arranged at one end of the axial direction of the heat exchange fan, and the driving motor is used for driving the heat exchange fan to rotate;

[0296] The driving motor comprises:

[0297] An outer rotor is connected to the heat exchange fan, and a rotation axis of the outer rotor is coaxially arranged with a rotation axis of the heat exchange fan.

[0298] An inner stator is arranged inside the outer rotor, the outer rotor is rotatable relative to the inner stator, and an inside of the inner stator is provided with an assembly cavity.

[0299] A first bearing is arranged in the assembly cavity, and the first bearing comprises:

[0300] A shaft sleeve is matched with the assembly cavity, one end of the shaft sleeve away from the heat exchange fan is a closed end, and one end of the shaft sleeve close to the heat exchange fan is an open end.

[0301] A sliding part is arranged inside the shaft sleeve.

[0302] The fan shaft passes through the open end and the sliding part, and a spacing is arranged between the fan shaft and the closed end.

[0303] In some embodiments, the assembly cavity comprises:

[0304] A first assembly part is arranged inside the assembly cavity, and the first assembly part is recessed towards a center of the assembly cavity.

[0305] The shaft sleeve comprises:

[0306] A first matching part is arranged protruding towards a periphery of the shaft sleeve, and the first matching part is in abutment with the first assembly part.

[0307] In some embodiments, the assembly cavity further comprises:

[0308] A second assembly part is arranged at an opening of the assembly cavity close to the heat exchange fan, and the second assembly part is arranged recessed towards a periphery of the assembly cavity.

[0309] The shaft sleeve comprises:

[0310] A second matching part is arranged at the open end of the shaft sleeve, the second matching part is arranged protruding towards a periphery of the shaft sleeve, and the second matching part is in abutment with the second assembly part.

[0311] In some embodiments, the driving motor further comprises:

[0312] A motor housing is fixedly connected with the base, the inner stator is arranged inside the motor housing,

[0313] A clamping plate is arranged at one end of the motor housing away from the heat exchange fan, and the clamping plate is detachably connected with the motor housing.

[0314] According to another aspect of the present application, an air conditioner indoor unit is provided.

[0315] a main body, a vertical direction of the main body being a height direction of the main body, a horizontal direction of the main body being a length direction of the main body, a first cavity being formed in the main body;

[0316] the main body comprises:

[0317] a casing;

[0318] a heat exchange air inlet, in communication with the first cavity;

[0319] a heat exchange air outlet, in communication with the first cavity;

[0320] a base, arranged in the first cavity, a heat exchange air duct being formed in the base;

[0321] a heat exchange fan, arranged in the heat exchange air duct, an axial direction of the heat exchange fan being the same as the length direction of the main body;

[0322] a driving motor, arranged at one end of the axial direction of the heat exchange fan, the driving motor being used to drive the heat exchange fan to rotate;

[0323] the driving motor comprises:

[0324] an outer rotor, connected to the heat exchange fan, the outer rotor rotating synchronously with the heat exchange fan;

[0325] an inner stator, arranged at an inner side of the outer rotor, the outer rotor being rotatable relative to the inner stator, an inner portion of the inner stator being provided with an assembly cavity;

[0326] a first bearing, arranged in the assembly cavity;

[0327] the heat exchange fan comprises:

[0328] a fan body, located in the heat exchange air duct;

[0329] a fan shaft, arranged at an end of the fan body, the fan shaft being arranged in the first bearing;

[0330] a collision prevention rib, arranged at one end of the fan body close to the first bearing, a space being arranged between the collision prevention rib and the first bearing;

[0331] when the heat exchange fan moves along the axial direction, the collision prevention rib abuts against the first bearing.

[0332] According to another aspect of the present application, an air conditioner indoor unit is provided, comprising:

[0333] A casing, comprising at least a heat exchange air inlet and a heat exchange air outlet, the heat exchange air inlet is arranged on the top of the casing, and the heat exchange air outlet is arranged on the front bottom of the casing; the heat exchange air inlet and the heat exchange air outlet respectively extend along the length direction of the casing.

[0334] An indoor heat exchanger arranged inside the casing and close to the heat exchange air inlet; the indoor heat exchanger is mounted on the base of the casing.

[0335] A heat exchange fan arranged inside the casing, the heat exchange fan is located on the leeward side of the indoor heat exchanger; the axial direction of the heat exchange fan is arranged along the length direction of the casing.

[0336] A driving motor arranged inside the casing; the driving motor and the heat exchange fan are arranged along the axial direction of the heat exchange fan.

[0337] The driving motor comprises:

[0338] A motor shell mounted inside the casing;

[0339] An inner stator, at least part of the inner stator is mounted inside the motor shell;

[0340] An outer rotor provided with a receiving cavity for receiving at least part of the inner stator; the outer rotor can rotate relative to the inner stator to drive the heat exchange fan to rotate;

[0341] A connecting shell connected to one end of the heat exchange fan towards the driving motor, the connecting shell is defined with an accommodation part inside, the outer rotor is arranged in the accommodation part, and the accommodation part is in communication with the receiving cavity;

[0342] A connecting shaft arranged along the axial direction of the heat exchange fan, one end of the connecting shaft along the length direction is connected to the connecting shell;

[0343] A buffer arranged on the inner wall of the motor shell towards the heat exchange fan, the buffer is arranged corresponding to the end of the connecting shaft away from the heat exchange fan, so that when the heat exchange fan drives the outer rotor to move towards the inner stator through the connecting shell, the connecting shaft and the buffer are in contact with each other.

[0344] In some embodiments, the projection of the connecting shaft along the axial direction of the heat exchange fan is located in the projection of the buffer towards the connecting shaft along the axial direction of the heat exchange fan.

[0345] In some embodiments, a first gap is formed between a side of the inner stator facing the heat exchange fan and a side of the connecting shell facing the inner stator along an axial direction of the heat exchange fan, and a second gap is formed between an end of the connecting shaft away from the heat exchange fan and a side of the buffer facing the connecting shaft along the axial direction of the heat exchange fan; the second gap has a size L2 along the axial direction of the heat exchange fan, the first gap has a size L1 along the axial direction of the heat exchange fan, and L1 and L2 satisfy a relationship L1>L2.

[0346] In some embodiments, a constraint is arranged on an inner wall of the motor shell, the constraint protrudes from the inner wall of the motor shell, and the constraint is configured to constrain the inner stator; an end of the connecting shell away from the heat exchange fan extends into the motor shell, and a third gap is formed between the end of the connecting shell extending into the motor shell and a side of the constraint facing the connecting shell along the axial direction of the heat exchange fan; the third gap has a size L3 along the axial direction of the heat exchange fan, and L3 and L2 satisfy a relationship L3>L2.

[0347] In some embodiments, the motor shell includes a motor casing and a motor cover; the motor casing has a casing cavity defined therein, the casing cavity is arranged along the axial direction of the heat exchange fan, and at least part of the inner stator is arranged in the casing cavity; the motor cover is arranged at an opening of the motor casing away from the heat exchange fan in a manner that the motor cover can be opened and closed; and the buffer is arranged on a side of the motor cover facing the casing cavity.

[0348] In some embodiments, the motor cover is provided with a fixing portion, the fixing portion is in communication with the inside of the motor shell, and the buffer is arranged on the fixing portion.

[0349] In some embodiments, an outer diameter of an end of the connecting shaft away from the heat exchange fan is V, a distance from an arbitrary point on an outer periphery of a side of the buffer facing the connecting shaft to an axis of the connecting shaft is T / 2, and T and V satisfy a relationship T>V.

[0350] According to another aspect of the present application, an air conditioner indoor unit is provided, which includes:

[0351] A casing includes a heat exchange air inlet and a heat exchange air outlet, the heat exchange air inlet is arranged at a top of the casing, and the heat exchange air outlet is arranged at a front bottom of the casing; the heat exchange air inlet and the heat exchange air outlet respectively extend along a length direction of the casing;

[0352] An indoor heat exchanger is arranged in the casing and close to the heat exchange air inlet;

[0353] A heat exchange fan is arranged in the machine housing, and the heat exchange fan is located at the leeward side of the indoor heat exchanger; and the heat exchange fan is arranged along the axial direction of the heat exchange fan.

[0354] A driving motor is arranged in the machine housing, and the driving motor is used to drive the heat exchange fan to operate; and the driving motor and the heat exchange fan are arranged along the axial direction of the heat exchange fan.

[0355] The driving motor comprises:

[0356] An inner stator is arranged in the machine housing.

[0357] An outer rotor is arranged with a receiving cavity, and the receiving cavity is used to receive at least part of the inner stator; and the outer rotor is rotatable relative to the inner stator to drive the heat exchange fan to rotate.

[0358] A connecting shell is connected to one end of the heat exchange fan which is located towards the driving motor, and the connecting shell is internally defined with a receiving portion, and the outer rotor is arranged in the receiving portion; and the receiving portion is in communication with the receiving cavity.

[0359] A connecting shaft is arranged along the axial direction of the heat exchange fan, and the two ends of the connecting shaft along the length direction are respectively provided with a first bearing.

[0360] The inner stator is internally provided with a first mounting portion, and the first mounting portion is used to receive one end of the connecting shaft which is located towards the inner stator; and the first mounting portion is further internally provided with a shaft sleeve which is used to connect the first bearing.

[0361] The connecting shell is internally provided with a second mounting portion, and the second mounting portion is used to receive one end of the connecting shaft which is located towards the heat exchange fan; and the second mounting portion is internally provided with a shaft sleeve which is used to connect the first bearing.

[0362] In some embodiments, the heat exchange fan and the connecting shell are connected by an integral molding manner, and one end of the connecting shaft which is away from the inner stator is connected to the heat exchange fan.

[0363] In some embodiments, one end of the heat exchange fan which is away from the outer rotor is provided with a fan shaft, and the fan shaft is connected with a second bearing; and the machine housing is provided with a bearing seat which is used to mount the second bearing, and the bearing seat is arranged in correspondence with one end of the heat exchange fan which is away from the outer rotor.

[0364] According to another aspect of the present application, an indoor unit of an air conditioner is provided, which comprises:

[0365] A casing, comprising at least a heat exchange air inlet and a heat exchange air outlet, the heat exchange air inlet is arranged on the top of the casing, and the heat exchange air outlet is arranged on the front bottom of the casing; the heat exchange air inlet and the heat exchange air outlet extend along the length direction of the casing respectively;

[0366] An indoor heat exchanger arranged inside the casing and close to the heat exchange air inlet; the indoor heat exchanger is mounted on the base of the casing;

[0367] A heat exchange fan arranged inside the casing, the heat exchange fan is located on the leeward side of the indoor heat exchanger; the axial direction of the heat exchange fan is arranged along the length direction of the casing;

[0368] A driving motor arranged inside the casing; the driving motor and the heat exchange fan are arranged along the axial direction of the heat exchange fan;

[0369] The driving motor comprises:

[0370] An inner stator mounted on the casing;

[0371] An outer rotor provided with a receiving cavity for receiving at least part of the inner stator; the outer rotor can rotate relative to the inner stator to drive the heat exchange fan to rotate;

[0372] A connecting shell connected to one end of the heat exchange fan towards the driving motor; the connecting shell is defined with a receiving portion inside; the outer rotor is arranged in the receiving portion; the receiving portion is in communication with the receiving cavity;

[0373] A connecting shaft arranged along the axial direction of the heat exchange fan; one end of the connecting shaft along the length direction is connected to the connecting shell, and the other end of the connecting shaft along the length direction is connected with a first bearing;

[0374] A shaft sleeve arranged in the inner stator for connecting the first bearing; the shaft sleeve is arranged on the side of the inner stator close to the heat exchange fan;

[0375] A protruding portion protruding from the side of the connecting shell away from the heat exchange fan; the protruding portion is arranged opposite to the inner stator along the axial direction of the heat exchange fan; the protruding portion is arranged corresponding to the shaft sleeve, so that when the heat exchange fan drives the outer rotor to move towards the inner stator through the connecting shell, the protruding portion and the shaft sleeve are in contact with each other.

[0376] In some embodiments, a first gap is formed between a side of the stator facing the heat exchange fan and a side of the connecting shell facing away from the heat exchange fan along an axial direction of the heat exchange fan, the first gap has a size P1 along the axial direction of the heat exchange fan, a size P2 is formed between an end of the protruding portion facing the inner stator and an end of the shaft sleeve facing the connecting shell along the axial direction of the heat exchange fan, and P1 and P2 satisfy a relationship P1>P2.

[0377] In some embodiments, a projection of the protruding portion along the axial direction of the heat exchange fan is located within a projection of the side of the shaft sleeve facing the connecting shell along the axial direction of the heat exchange fan.

[0378] In some embodiments, an outer diameter of the end of the protruding portion facing the inner stator is D1, an outer diameter of the end of the shaft sleeve facing the connecting shell is H1, and H1 and D1 satisfy a relationship H1>D1.

[0379] In some embodiments, the protruding portion defines a through portion inside for the connecting shaft to pass through, the connecting shaft is connected with the first bearing through the through portion; an inner diameter of the end of the protruding portion facing the inner stator is D2, and an outer diameter of the end of the protruding portion facing the inner stator is D1; an inner diameter of the end of the shaft sleeve facing the connecting shell is H2, and an outer diameter of the end of the shaft sleeve facing the connecting shell is H1; H1, H2, D1 and D2 satisfy a relationship D2>H2 and D1

[0380] In some embodiments, the machine shell is further provided with a motor housing, the inner stator is installed in the motor housing; a constraint portion is arranged on an inner wall of the motor housing; and the side of the connecting shell facing away from the heat exchange fan extends into the motor housing.

[0381] In some embodiments, a size P3 is formed between the side of the connecting shell extending into the motor housing and the side of the constraint portion facing the heat exchange fan along the axial direction of the heat exchange fan, and P3 and P2 satisfy a relationship P3>P2.

[0382] In some embodiments, the connecting shell forms a receiving portion, and an end of the motor housing facing the heat exchange fan is arranged in the receiving portion; a size P4 is formed between the end of the motor housing arranged in the receiving portion and the side of the bottom wall of the receiving portion facing the inner stator along the axial direction of the heat exchange fan, and P4 and P2 satisfy a relationship P4>P2.

[0383] According to another aspect of the present application, an air conditioner indoor unit is provided, comprising:

[0384] A casing, which at least comprises a heat exchange air inlet and a heat exchange air outlet, the heat exchange air inlet is arranged on the top of the casing, and the heat exchange air outlet is arranged on the front bottom of the casing; the heat exchange air inlet and the heat exchange air outlet respectively extend along the length direction of the casing;

[0385] An indoor heat exchanger, which is arranged inside the casing and close to the heat exchange air inlet;

[0386] A heat exchange fan, which is arranged inside the casing, and the heat exchange fan is located on the leeward side of the indoor heat exchanger; the axial direction of the heat exchange fan is arranged along the length direction of the casing;

[0387] A driving motor, which is arranged inside the casing; the driving motor and the heat exchange fan are arranged along the axial direction of the heat exchange fan;

[0388] The driving motor further comprises:

[0389] An inner stator, which is mounted on the casing;

[0390] An outer rotor, which is provided with a receiving cavity, the receiving cavity is used for receiving at least part of the inner stator; the outer rotor can rotate relative to the inner stator to drive the heat exchange fan to rotate;

[0391] A connecting shell, which is connected to one end of the heat exchange fan towards the driving motor; the connecting shell is defined to form a containing part inside, the outer rotor is arranged in the containing part; the containing part is in communication with the receiving cavity;

[0392] A connecting shaft, which is arranged along the axial direction of the heat exchange fan; one end of the connecting shaft along the length direction is connected to the connecting shell, and the other end of the connecting shaft along the length direction is connected with a first bearing;

[0393] A first mounting part, which extends along the axial direction of the heat exchange fan; the first mounting part at least penetrates one side of the inner stator along the extension direction of the first mounting part towards the heat exchange fan; the first mounting part is provided with a shaft sleeve inside for connecting the first bearing;

[0394] A protruding part, which protrudes from one side of the connecting shell away from the heat exchange fan, the protruding part is arranged opposite to the inner stator along the axial direction of the heat exchange fan; the protruding part is arranged corresponding to the shaft sleeve, so that when the heat exchange fan drives the outer rotor to move towards the inner stator through the connecting shell, the protruding part extends into the first mounting part and contacts with the shaft sleeve.

[0395] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An indoor unit for an air conditioner, comprising: The main body has a vertical direction that is the height direction of the main body, a horizontal direction that is the length direction of the main body, and a first cavity formed inside the main body; The subject includes: chassis; The heat exchange air inlet is connected to the first cavity; The heat exchange outlet is connected to the first cavity; A base is disposed within the first cavity, and a heat exchange air duct is formed within the base; A heat exchange fan is disposed in the heat exchange duct. The axial direction of the heat exchange fan is in the same direction as the length direction of the main body. A first limiting part is provided at the first end of the axial direction of the heat exchange fan. The first limiting part extends along the axial direction of the heat exchange fan. A drive motor is located at one end of the heat exchange fan where the first limiting part is provided, and the drive motor is used to drive the heat exchange fan to rotate. The drive motor includes: The motor housing is fixedly connected to the base, and a second limiting part is provided at the end of the motor housing facing the heat exchange fan; An outer rotor is connected to the heat exchange fan, and the rotation axis of the outer rotor is coaxial with the rotation axis of the heat exchange fan. An inner stator is disposed inside the motor housing, and the outer rotor is rotatable relative to the inner stator; A gap is provided between the second limiting part and the first limiting part, and in the length direction of the main body, the first limiting part is disposed away from the heat exchange fan relative to the second limiting part; On the projection along the length direction of the main body, the first limiting portion and the second limiting portion at least partially overlap.

2. The indoor unit of the air conditioner according to claim 1, wherein, The motor housing includes: a limiting rib, which is disposed at the bottom of the motor housing; The base includes: The motor cavity, wherein the drive motor is disposed within the motor cavity; A limiting member is disposed within the motor cavity, and the limiting member cooperates with the limiting rib to restrict the axial movement of the motor housing.

3. The indoor unit of the air conditioner according to claim 1, wherein, The heat exchange fan includes: a first flange disposed at one end of the heat exchange fan facing the drive motor, the first flange extending away from the heat exchange fan along the axial direction of the heat exchange fan, and a first limiting portion disposed on the first flange.

4. The indoor unit of the air conditioner according to claim 3, wherein, The motor housing includes: a second flange disposed at one end of the motor housing facing the heat exchange fan, the second flange extending away from the motor housing along the axial direction of the motor housing, and a second limiting portion disposed on the second flange.

5. The indoor unit of the air conditioner according to claim 4, wherein, The second flange is disposed inside the first flange, the second limiting portion extends toward the inside of the first flange, and the first limiting portion extends toward the outside of the second flange.

6. The indoor unit of the air conditioner according to claim 4 or 5, wherein, On the projection along the height direction of the body, the first flange and the second flange at least partially overlap.

7. The indoor unit of the air conditioner according to claim 3, wherein, The heat exchange fan further includes: a third flange disposed inside the first flange, the third flange extending away from the heat exchange fan along the axial direction of the heat exchange fan, and an outer rotor disposed inside the third flange, the outer rotor rotating synchronously with the heat exchange fan.

8. The indoor unit of the air conditioner according to claim 4, wherein, The indoor unit of the air conditioner also includes: The first bearing is disposed inside the inner stator; The heat exchange fan also includes: A fan body, wherein the first flange and the second flange are respectively connected to the fan body, and there is a gap between the fan body and the inner stator; A fan shaft passes through the fan body and the first bearing, and the fan shaft is rotatable relative to the first bearing; An anti-collision rib is provided at one end of the fan body along the axial direction and protrudes from the fan body along the axial direction of the heat exchange fan. There is a gap between the anti-collision rib and the first bearing.

9. The indoor unit of the air conditioner according to claim 8, wherein, The motor housing also includes a fourth flange, which extends radially away from the motor housing and has a gap between the fourth flange and the first limiting portion on the projection along the height direction of the main body.

10. The indoor unit of the air conditioner according to claim 9, wherein, The minimum distance between the fourth flange and the first limiting part is s, and the minimum distance between the anti-collision rib and the first bearing is b. s and b satisfy the relationship: s > b.

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