Hanging type air conditioner indoor unit

Abstract

The utility model discloses a hanging type air conditioner indoor unit, and relates to the technical field of air conditioners. The hanging type air conditioner indoor unit comprises a machine shell, a heat exchanger, a heat exchange fan, a driving motor, a connecting shell and a protruding part. The driving motor comprises a stator and an outer rotor; the outer rotor is provided with an extending part into which the stator extends; the connecting shell is connected to the end, facing the driving motor, of the heat exchange fan. An accommodating part for accommodating the outer rotor is defined and formed in the connecting shell; a first gap is formed between the side, facing the heat exchange fan, of the stator and the side, deviating from the heat exchange fan, of the connecting shell. One end of the connecting shaft is connected to the connecting shell, and the other end of the connecting shaft is connected with a first bearing; the bearing sleeves the stator and is positioned on one side, close to the heat exchange fan, of the stator; the protruding part protrudes out of the side, away from the heat exchange fan, of the connecting shell and corresponds to the bearing sleeve. According to the hanging type air conditioner indoor unit, the protruding part and the bearing sleeve are correspondingly arranged, the bearing sleeve buffers the heat exchange fan, and hard collision between the heat exchange fan and the stator is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a wall-mounted air conditioning indoor unit. Background Art

[0002] The motor is one of the core components of the air conditioner indoor unit. It drives the fan to rotate, sucks in the indoor air, cools or heats it through the heat exchanger, and then blows the treated air out to adjust the indoor temperature. The performance of the motor directly affects the operating efficiency and cooling / heating effect of the air conditioner indoor unit. An efficient and stable motor can ensure that the air conditioner indoor unit maintains stable performance during long-term operation and reduce energy consumption.

[0003] The outer rotor motor is a common type of motor. In the indoor unit of the wall-mounted air conditioner using the outer rotor motor, the stator is installed in the housing as the motor body, and the outer rotor is connected to the fan. One end of the heat exchange fan is usually provided with a receiving portion for installing the outer rotor, and at least part of the stator is arranged in the receiving portion so that the outer rotor and the stator cooperate with each other. There is usually a gap between the stator and the inner wall of the receiving portion along the axial direction of the heat exchange fan to ensure the reliability of the relative rotation between the outer rotor and the stator.

[0004] During the production and transportation process, the heat exchange fan is prone to move along its axial direction, which may cause the outer rotor and the stator to collide with each other, causing damage to the motor and / or fan, and reducing the service life of the wall-mounted air conditioner indoor unit. Utility Model Content

[0005] In view of the deficiencies existing in the related art, the present application provides a wall-mounted air-conditioning indoor unit which can protect the heat exchange fan when the heat exchange fan moves axially to prevent the heat exchange fan from being damaged.

[0006] The present application provides a wall-mounted air conditioner indoor unit, comprising:

[0007] The casing at least comprises a casing air inlet and a casing air outlet, wherein the casing air inlet is arranged at the top of the casing, and the casing air outlet is arranged at the front bottom of the casing; the casing air inlet and the casing air outlet extend along the length direction of the casing respectively;

[0008] The heat exchanger is arranged inside the casing and close to the air inlet of the casing; the heat exchanger is installed on the base of the casing;

[0009] A heat exchange fan is arranged inside the casing, and the heat exchange fan is located on the leeward side of the heat exchanger; the axial direction of the heat exchange fan is arranged along the length direction of the casing;

[0010] The driving motor is arranged inside the casing; the driving motor and the heat exchange fan are arranged along the axial direction of the heat exchange fan;

[0011] The drive motor further comprises:

[0012] a stator mounted on the housing;

[0013] The outer rotor is provided with an insertion portion for at least a portion of the stator to be inserted therein; the outer rotor can rotate relative to the stator to drive the heat exchange fan to rotate;

[0014] A connecting shell connected to one end of the heat exchange fan facing the drive motor; a receiving portion is defined in the connecting shell, and the outer rotor is arranged in the receiving portion; the receiving portion is communicated with the extending portion;

[0015] 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 the axial direction of the heat exchange fan;

[0016] A connecting shaft is arranged along the axial direction of the heat exchange fan; one end of the connecting shaft in the length direction is connected to the connecting shell, and the other end of the connecting shaft in the length direction is connected to the first bearing;

[0017] A bearing sleeve is arranged on the stator and is used to connect the first bearing; the bearing sleeve is arranged on a side of the stator close to the heat exchange fan;

[0018] The raised portion, whose raised connecting shell is arranged on the side away from the heat exchange fan, is arranged opposite to the stator along the axial direction of the heat exchange fan; the raised portion and the bearing sleeve are arranged correspondingly, so that when the heat exchange fan drives the outer rotor to move toward the stator through the connecting shell, the raised portion and the bearing sleeve contact each other.

[0019] The technical solution connects the outer rotor and the stator by setting a connecting shaft, and the connecting shaft is connected to the stator through a first bearing, so that the connecting shaft supports the relative rotation between the outer rotor and the stator through the connecting shell, thereby preventing the axis of the outer rotor from deviating downward from the axis of the stator under the action of the gravity of the heat exchange fan; by setting a protrusion on the side of the connecting shell away from the heat exchange fan, and using the corresponding arrangement of the protrusion and the bearing sleeve, when the heat exchange fan moves toward the stator, the protrusion and the bearing sleeve contact each other, so that the bearing sleeve can buffer the heat exchange fan, thereby preventing the heat exchange fan from being damaged by a hard collision with the stator through the connecting shell.

[0020] The present application also provides a wall-mounted air conditioner indoor unit, comprising:

[0021] The casing at least comprises a casing air inlet and a casing air outlet, wherein the casing air inlet is arranged at the top of the casing, and the casing air outlet is arranged at the front bottom of the casing; the casing air inlet and the casing air outlet extend along the length direction of the casing respectively;

[0022] A heat exchanger is arranged inside the casing and close to the air inlet of the casing;

[0023] A heat exchange fan is arranged inside the casing, and the heat exchange fan is located on the leeward side of the heat exchanger; the axial direction of the heat exchange fan is arranged along the length direction of the casing;

[0024] The driving motor is arranged inside the casing; the driving motor and the heat exchange fan are arranged along the axial direction of the heat exchange fan;

[0025] The drive motor further comprises:

[0026] a stator mounted on the housing;

[0027] The outer rotor is provided with an insertion portion for at least a portion of the stator to be inserted therein; the outer rotor can rotate relative to the stator to drive the heat exchange fan to rotate;

[0028] A connecting shell connected to one end of the heat exchange fan facing the drive motor; a receiving portion is defined in the connecting shell, and the outer rotor is arranged in the receiving portion; the receiving portion is communicated with the extending portion;

[0029] 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 the axial direction of the heat exchange fan;

[0030] A connecting shaft is arranged along the axial direction of the heat exchange fan; one end of the connecting shaft in the length direction is connected to the connecting shell, and the other end of the connecting shaft in the length direction is connected to the first bearing;

[0031] A first mounting portion extending along the axial direction of the heat exchange fan; the first mounting portion at least penetrates the side of the stator facing the heat exchange fan along its extension direction; a bearing sleeve for connecting the first bearing is provided in the mounting portion;

[0032] The raised portion, whose raised connecting shell is arranged on the side away from the heat exchange fan, is arranged opposite to the stator along the axial direction of the heat exchange fan; the raised portion and the bearing sleeve are arranged correspondingly, so that when the heat exchange fan drives the outer rotor to move toward the stator through the connecting shell, the raised portion extends into the first mounting portion and contacts the bearing sleeve.

[0033] The technical solution connects the outer rotor and the stator by setting a connecting shaft, and the connecting shaft is connected to the stator through a first bearing, so that the connecting shaft supports the relative rotation between the outer rotor and the stator through the connecting shell, thereby preventing the axis of the outer rotor from deviating downward from the axis of the stator under the action of the gravity of the heat exchange fan; by setting a protrusion on the side of the connecting shell away from the heat exchange fan, and using the corresponding arrangement of the protrusion and the bearing sleeve, when the heat exchange fan moves toward the stator, the protrusion and the bearing sleeve contact each other, so that the bearing sleeve can buffer the heat exchange fan, thereby preventing the heat exchange fan from being damaged by a hard collision with the stator through the connecting shell.

[0034] In some embodiments, the axial dimension of the first gap along the heat exchange fan is L1, the distance along the axial direction of the heat exchange fan between the end of the protrusion facing the stator and the end of the bearing sleeve facing the connecting shell is L2, and L1 and L2 satisfy the relationship: L1>L2.

[0035] In some of the embodiments, a projection of the protrusion along the axial direction of the heat exchange fan is located within a projection of a side of the bearing sleeve facing the connecting shell along the axial direction of the heat exchange fan.

[0036] In some embodiments, the outer diameter of the protrusion facing the stator is D1, the outer diameter of the bearing sleeve facing the connecting shell is H1, and L1 and D1 satisfy the relationship: H1>D1.

[0037] In some of the embodiments, a through portion is defined inside the raised portion for the connecting shaft to pass through, and the connecting shaft passes through the through portion to connect with the first bearing; the inner diameter of the raised portion facing the stator end is D2, and the outer diameter is D1; ​​the inner diameter of the bearing sleeve facing the connecting shell end is H2, and the outer diameter is H1; H1, H2, D1, and D2 satisfy the relationship: D2>H2, D1

[0038] In some of the embodiments, the casing is also equipped with a motor casing, and the stator is installed in the motor casing; a restraining portion is provided on the inner wall of the motor casing, and the restraining portion protrudes from the inner wall of the motor casing; and the connecting casing is arranged to extend into the motor casing on the side away from the heat exchange fan.

[0039] In some embodiments, the distance between the side of the connecting shell extending into the motor shell and the side of the constraint portion facing the heat exchange fan along the axial direction of the heat exchange fan is L3, and L3 and L2 satisfy the relationship: L3>L2.

[0040] In some embodiments, a mating portion is provided on the outer periphery of the connecting shell, and one end of the motor shell facing the heat exchange fan is provided in the mating portion; the distance between one end of the motor shell provided in the mating portion and the mating portion along the axial direction of the heat exchange fan is L4, and L4 and L2 satisfy the relationship: L4>L2.

[0041] In some of the embodiments, a support shaft is provided at one end of the heat exchange fan away from the connecting shell, and the support shaft is connected to a second bearing; the casing is provided with a bearing seat for connecting the second bearing, and the bearing seat is arranged corresponding to the end of the heat exchange fan away from the connecting shell; when the heat exchange fan moves along its axial direction away from the drive motor, the heat exchange fan and the bearing seat contact each other.

[0042] The technical solution sets a support shaft at one end of the heat exchange fan away from the driving motor, and sets a bearing seat on the base, so that the support shaft is connected to the bearing seat through a second bearing, so that the base supports the heat exchange fan, thereby increasing the reliability and stability of the operation of the heat exchange fan; and the bearing seat is set corresponding to the end of the heat exchange fan away from the driving motor. When the heat exchange fan moves along the axial direction of the heat exchange fan in a direction away from the driving motor, the heat exchange fan and the bearing seat contact each other, so that the bearing seat can buffer the heat exchange fan and avoid damage to the heat exchange fan due to hard collision with the casing.

[0043] ​In the above embodiment, a wall-mounted air-conditioning indoor unit connects the outer rotor and the stator by setting a connecting shaft, and the connecting shaft is connected to the stator through a first bearing, so that the connecting shaft supports the relative rotation between the outer rotor and the stator through the connecting shell, thereby preventing the axis of the outer rotor from deviating downward from the axis of the stator under the action of the gravity of the heat exchange fan; by setting a protrusion on the side of the connecting shell away from the heat exchange fan, and using the corresponding arrangement of the protrusion and the bearing sleeve, when the heat exchange fan moves toward the stator, the protrusion and the bearing sleeve contact each other, so that the bearing sleeve can buffer the heat exchange fan, thereby preventing the heat exchange fan from being damaged by a hard collision with the stator through the connecting shell.

[0044] The above-mentioned wall-mounted air conditioner indoor unit can not only ensure that the heat exchange fan and the drive motor are arranged coaxially, but also protect the heat exchange fan during the production or transportation of the wall-mounted air conditioner indoor unit to avoid damage caused by collision between the heat exchange fan and the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a structural schematic diagram of an embodiment of a wall-mounted air conditioner indoor unit of the present application;

[0046] Figure 2 It is a schematic diagram of the structure of the interior of an embodiment of a wall-mounted air conditioner indoor unit of the present application (without a heat exchanger);

[0047] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the wall-mounted air conditioner indoor unit of the present application when the outer cover is not installed;

[0048] Figure 4 It is a structural schematic diagram of a heat exchange fan, a drive motor and a motor shield installed on a base in one embodiment of a wall-mounted air conditioner indoor unit of the present application;

[0049] Figure 5 This is a structural schematic diagram of a heat exchange fan and a drive motor installed on a base in one embodiment of a wall-mounted air conditioner indoor unit of the present application;

[0050] Figure 6 This is a schematic diagram of the structure of a heat exchange fan, a drive motor, and a motor housing connected to each other in one embodiment of a wall-mounted air conditioner indoor unit of the present application;

[0051] Figure 7 This is a schematic structural diagram of the heat exchange fan and the drive motor when assembled in one embodiment of the wall-mounted air conditioner indoor unit of the present application;

[0052] Figure 8 This is a structural schematic diagram of a drive motor assembled on a motor housing in one embodiment of a wall-mounted air conditioner indoor unit of the present application;

[0053] Fig. 9This is a structural schematic diagram from another angle when the driving motor is assembled on the motor housing in one embodiment of the wall-mounted air conditioner indoor unit of the present application;

[0054] Fig.10 This is a structural schematic diagram of the assembly of the stator and the motor housing in one embodiment of the wall-mounted air conditioner indoor unit of the present application;

[0055] Fig.11 This is a structural schematic diagram of the assembly of the connecting shaft and the outer rotor in one embodiment of the wall-mounted air conditioner indoor unit of the present application;

[0056] Fig.12 It is a cross-sectional view of a heat exchange fan and a drive motor mounted on a motor housing when they are connected to each other in one embodiment of a wall-mounted air conditioner indoor unit of the present application;

[0057] Fig.13 It is a cross-sectional view of a driving motor assembled on a motor housing in one embodiment of a wall-mounted air conditioner indoor unit of the present application;

[0058] Fig.14 for Fig.13 A partial enlarged view of the middle part;

[0059] Fig.15 for Fig.14 A partial enlarged view of point B in the middle;

[0060] Fig.16 It is a structural schematic diagram of a raised portion and a bearing sleeve in one embodiment of a wall-mounted air conditioner indoor unit of the present application when the raised portion and the bearing sleeve are arranged correspondingly.

[0061] In the figure,

[0062] 100, housing; 200, heat exchange fan; 300, heat exchanger; 400, electrical box; 500, motor shield; 600, bearing seat; 700, motor housing; 800, drive motor; 900, bearing sleeve;

[0063] 101, air inlet of the casing; 102, air outlet of the casing;

[0064] 110, outer cover; 120, base;

[0065] 701, connecting part;

[0066] 710, housing; 720, cover; 730, shock-absorbing rubber;

[0067] 711, Constraint Department;

[0068] 801, first gap; 802, second gap;

[0069] 810, connecting shell; 820, stator; 830, connecting shaft; 840, outer rotor;

[0070] 811, accommodating portion; 812, protruding portion; 813, penetrating portion; 814, matching portion; 815, first peripheral wall; 816, second peripheral wall;

[0071] 821, limiter;

[0072] 831. First bearing. DETAILED DESCRIPTION

[0073] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0074] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0075] The terms "first ψ, "second ψ, "third ψ, etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar or similar objects or entities, and are not necessarily meant to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0076] The terms "including" and "having" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a series of components is not necessarily limited to all the components expressly listed, but may include other components not expressly listed or inherent to such products or devices.

[0077] The wall-mounted air conditioner indoor unit provided in the embodiment of the present application may have various implementation forms. The wall-mounted air conditioner indoor unit may be a wall-mounted air conditioner indoor unit with a fresh air function, or may be a conventional wall-mounted air conditioner indoor unit.

[0078] like Figure 1 As shown, a wall-mounted air-conditioning indoor unit provided in the present application includes a casing 100, and the casing 100 is used to form the overall appearance of the wall-mounted air-conditioning indoor unit; the casing 100 has a top and a bottom, the top of the casing 100 and the bottom of the casing 100 are opposite sides, and the height direction of the casing 100 is from the top of the casing 100 to the bottom of the casing 100; the right side of the casing 100 and the left side of the casing 100 are opposite ends, and the length direction of the casing 100 is from the left side of the casing 100 to the right side of the casing 100; the front side of the casing 100 and the back side of the casing 100 are opposite sides, and the thickness direction of the casing 100 is from the front side of the casing 100 to the back side of the casing 100.

[0079] In practical applications, the housing 100 is usually disposed on the top of a room or in an upper space of a room, wherein the rear side of the housing 100 is disposed toward a wall, and the front side of the housing 100 is disposed toward a user.

[0080] like Figure 1 As shown, the casing 100 includes a casing air inlet 101, which is arranged at the top of the casing 100, and indoor air enters the interior of the casing 100 through the casing air inlet 101; the casing air inlet 101 extends along the length direction of the casing 100 to increase the air intake volume of the indoor unit of the wall-mounted air conditioner.

[0081] like Figure 2 and Figure 3 As shown, the casing 100 includes a casing air outlet 102, which is opened on the front side of the casing 100 and arranged close to the bottom of the casing 100, that is, the casing air outlet 102 is located on the front lower side of the casing 100; the air inside the casing 100 is output to the room through the casing air outlet 102; the casing air outlet 102 extends along the length direction of the casing 100 to increase the air outlet of the indoor unit of the wall-mounted air conditioner.

[0082] like Figure 2 As shown, the housing 100 includes an outer cover 110 , the outer cover 110 defines an outer cover 110 cavity with an opening toward the rear side of the housing 100 , and the housing air inlet 101 is opened at the top of the outer cover 110 .

[0083] like Figure 3-Figure 5 As shown, the housing 100 includes a base 120 , which is disposed at the opening of the cavity of the outer cover 110 , and the base 120 and the outer cover 110 are detachably connected to each other.

[0084] A base opening is provided at the front bottom of the base 120 , and a cover opening is provided at the front bottom of the cover 110 . The base opening and the cover opening are correspondingly arranged to jointly define a housing air outlet 102 .

[0085] like Figure 3 As shown, the wall-mounted air conditioner indoor unit includes a heat exchanger 300, which is installed on the base 120 and located inside the casing 100. The air in the casing 100 is heated by the heat exchanger 300 after contacting the heat exchanger 300 to form conditioned air, and the conditioned air is output to the room through the casing air outlet 102 to meet the user's cooling or heating needs.

[0086] The heat exchanger 300 is disposed close to the air inlet 101 of the casing, so that the heat exchanger 300 can timely exchange heat for the air entering the casing 100 .

[0087] It should be noted that the air-conditioning wind can be cold air, hot air, or even normal temperature air.

[0088] like Figure 4 and Figure 5 As shown, the wall-mounted air conditioner indoor unit includes a heat exchange fan 200, which is installed on the base 120 and located inside the casing 100. The heat exchange fan 200 is located on the leeward side of the heat exchanger 300, and the axial direction of the heat exchange fan 200 extends along the length direction of the casing 100.

[0089] By operating the heat exchange fan 200, indoor air is introduced into the interior of the casing 100 through the casing air inlet 101, and after heat exchange through the heat exchanger 300 to form conditioned air, the conditioned air flows into the room through the casing air outlet 102.

[0090] It should be noted that, in a wall-mounted air conditioner indoor unit, the heat exchange fan 200 is usually a cross-flow fan.

[0091] One end of the heat exchange fan 200 in the length direction is connected to a support shaft, and the support shaft is connected to a second bearing.

[0092] like Figure 4-Figure 6 As shown, the base 120 is provided with a bearing seat 600, and the bearing seat 600 is arranged near one end of the support shaft of the heat exchange fan 200, and the second bearing is installed on the bearing seat 600 so that the support shaft is connected to the base 120 through the second bearing, so that the base 120 supports the operation of the heat exchange fan 200, thereby increasing the stability of the heat exchange fan 200 during operation.

[0093] It should be noted that the bearing seat 600 is made of a relatively soft material such as rubber or silicone, and the bearing seat 600 is deformed to facilitate installation of the second bearing on the bearing seat 600 .

[0094] like Figure 7 As shown, the wall-mounted air conditioner indoor unit includes a drive motor 800, which is located at one end of the heat exchange fan 200 away from the support shaft, and the drive motor 800 is used to drive the heat exchange fan 200 to operate; the drive motor 800 is installed on the base 120 and is located inside the casing 100, and the drive motor 800 and the heat exchange fan 200 are arranged along the axial direction of the heat exchange fan 200.

[0095] like Figure 3 As shown, the wall-mounted air conditioner indoor unit includes an electrical box 400, which is installed on the base 120. The electrical box 400 is arranged close to the drive motor 800. The electrical box 400 is installed with electrical components such as a control board. The control board is connected to the drive motor 800 through a line to control the operation of the drive motor 800. This is common knowledge in the art and will not be repeated here.

[0096] In the present application, the drive motor 800 is an outer rotor 840 motor.

[0097] like Figure 7-Figure 9As shown, the driving motor 800 includes an outer rotor 840 , which is a rotatable part of the driving motor 800 . The outer rotor 840 is used to drive the heat exchange fan 200 to rotate synchronously.

[0098] The outer rotor 840 is usually installed in the connecting shell 810, and the connecting shell 810 is connected to one end of the heat exchange fan 200 facing the driving motor 800. It should be noted that the connecting shell 810 and the outer rotor 840 rotate synchronously.

[0099] The connecting shell 810 can be detachably connected to the heat exchange fan 200 , or can be integrally formed with the heat exchange fan 200 .

[0100] like Figure 7 and Fig.12 As shown, the driving motor 800 includes a stator 820 , which is a non-rotatable part of the driving motor 800 . The stator 820 cooperates with an outer rotor 840 , and the outer rotor 840 can rotate relative to the stator 820 .

[0101] The outer rotor 840 is provided with an insertion portion, and a portion of the stator 820 is inserted into the insertion portion to cooperate with the outer rotor 840 .

[0102] It should be noted that the specific composition of the outer rotor 840 and the specific composition of the stator 820, as well as the connection shell 810 being rotatable relative to the stator 820, belong to the prior art in this field and will not be described in detail here.

[0103] There is a gap between the outer rotor 840 and the stator 820 along the radial direction of the stator 820 to prevent the stator 820 and the outer rotor 840 from contacting each other to generate friction or collision when the outer rotor 840 rotates relative to the stator 820, thereby ensuring the reliability of the rotation of the connecting shell 810.

[0104] like Fig.11 As shown, an accommodating portion 811 is provided at one end of the connecting shell 810 away from the heat exchange fan 200, the outer rotor 840 is disposed in the accommodating portion 811, the extending portion is connected to the accommodating portion 811, and at least part of the stator 820 is disposed in the accommodating portion 811, so that the stator 820 and the outer rotor 840 cooperate with each other.

[0105] In the present application, the accommodating portion 811 is a cavity provided at one end of the connecting shell 810 facing the stator 820, and the opening of the cavity is arranged toward the stator 820 so that the side of the stator 820 facing the heat exchange fan 200 can extend into the cavity, thereby enabling the stator 820 and the outer rotor 840 to cooperate with each other.

[0106] The accommodation portion 811 includes a first circumferential wall 815 , which is disposed along the circumference of the accommodation portion 811 ; the first circumferential wall 815 is disposed on a side of the connection shell 810 facing the stator 820 .

[0107] like Fig.13 As shown, there is a first gap 801 along the axial direction of the heat exchange fan 200 between the side of the stator 820 facing the heat exchange fan 200 and the side of the connecting shell 810 facing the stator 820 to prevent the stator 820 and the connecting shell 810 from contacting each other and generating friction when the connecting shell 810 rotates relative to the stator 820, thereby affecting the rotation of the outer rotor 840.

[0108] like Figure 10-13 As shown, the driving motor 800 includes a connecting shaft 830, and the axial direction of the connecting shaft 830 is arranged along the axial direction of the heat exchange fan 200; one end of the connecting shaft 830 is connected to the connecting shell 810, and the other end of the connecting shaft 830 is connected to the stator 820, so that the connecting shaft 830 constrains the stator 820 and the connecting shell 810, so that the outer rotor 840 is arranged coaxially with the stator 820, thereby increasing the reliability of the relative rotation between the two.

[0109] like Fig.12 As shown, a first bearing 831 is provided at one end of the connecting shaft 830 connected to the stator 820 , and the connecting shaft 830 is rotatably connected to the stator 820 via the first bearing 831 .

[0110] The stator 820 is provided with a mounting portion, in which a bearing sleeve 900 is provided. The bearing sleeve 900 is used to connect with the first bearing 831 . The first bearing 831 is provided in the bearing sleeve 900 , so that the connecting shaft 830 and the stator 820 are connected to each other.

[0111] In the present application, the mounting portion is a through cavity provided on the stator 820 , and the through cavity is provided along the axial direction of the heat exchange fan 200 and penetrates the stator 820 .

[0112] like Figure 5 and Figure 6 As shown, in order to facilitate the installation and fixation of the stator 820, the stator 820 is usually arranged in the motor housing 700, and the motor housing 700 is installed on the base 120 to ensure the firmness of the installation of the stator 820.

[0113] like Figure 8-Figure 10 As shown, a connecting portion 701 is provided on the outer periphery of the motor housing 700 , and the connecting portion 701 is connected to the base 120 via fasteners such as bolts or screws, so that the motor housing 700 is installed on the base 120 .

[0114] During the production and transportation of the wall-mounted air conditioner indoor unit, the heat exchange fan 200 is prone to move along its axial direction, causing the heat exchange fan 200 to easily collide with components such as the casing 100 or the drive motor 800, resulting in damage to the heat exchange fan 200 and / or the drive motor 800.

[0115] It should be noted that since the motor housing 700 is installed on the base 120 and the stator 820 is installed on the motor housing 700, the stator 820 is fixedly connected relative to the base 120. When the heat exchange fan 200 moves along its axial direction toward the stator 820, the position of the stator 820 relative to the base 120 remains unchanged, and the heat exchange fan 200 will drive the outer rotor 840 to move relative to the base 120 through the connecting shell 810.

[0116] In some embodiments, the connecting shaft 830 is fixedly connected to the connecting shell 810, and the connecting shaft 830 and the connecting shell 810 move synchronously; when the connecting shell 810 rotates, the connecting shaft 830 also rotates synchronously; when the connecting shell 810 moves axially along the heat exchange fan 200, the connecting shaft 830 also moves synchronously.

[0117] In other embodiments, the connecting shaft 830 is connected to the connecting shell 810 via a bearing. Although the connecting shaft 830 may not rotate synchronously when the connecting shell 810 rotates, the connecting shaft 830 usually moves synchronously when the connecting shell 810 moves axially along the heat exchange fan 200.

[0118] This is because when the connecting shaft 830 is connected to the connecting shell 810 through a bearing, the connecting shell 810 is usually provided with a bearing sleeve 900 for bearing the connecting shaft 830, and the connecting shell 810 is usually provided with a cavity for placing the bearing sleeve 900, and the end of the cavity close to the heat exchange fan 200 is usually a closed end to prevent the connecting shaft 830 and / or the bearing sleeve 900 from detaching from the connecting shell 810. Therefore, when the connecting shell 810 moves axially along the heat exchange fan 200, the connecting shaft 830 usually moves synchronously.

[0119] In the present application, the connecting shaft 830 is directly connected to the connecting shell 810 .

[0120] Since the connecting shaft 830 usually moves synchronously with the connecting shell 810 along the axial direction of the heat exchange fan 200 , and the position of the stator 820 relative to the connecting shell 810 is fixed, the connecting shaft 830 can move relative to the stator 820 along the axial direction of the heat exchange fan 200 .

[0121] In the present application, since the bearing seat 600 is located at one end of the heat exchange fan 200 axially away from the drive motor 800, and the bearing seat 600 is usually made of a softer material such as rubber or silicone, the bearing seat 600 is used to limit and block the movement of the heat exchange fan 200 along the axial direction of the heat exchange fan 200 toward the bearing seat 600, so that the bearing seat 600 buffers the heat exchange fan 200.

[0122] Specifically, one end of the bearing seat 600 close to the heat exchange fan 200 is disposed opposite to the heat exchange fan 200 along the axial direction of the heat exchange fan 200; when the heat exchange fan 200 moves axially away from the driving motor 800, one end of the heat exchange fan 200 facing the bearing seat 600 contacts the bearing seat 600, so that the bearing seat 600 prevents the heat exchange fan 200 from continuing to move. At the same time, the bearing seat 600 can also buffer the heat exchange fan 200 to avoid damage to the heat exchange fan 200 due to impact.

[0123] As Fig.11 and Fig.12 shown, the bottom wall of the accommodating portion 811 is provided with a protruding portion 812. The protruding portion 812 is located within the accommodating portion 811 and is correspondingly disposed with the bearing sleeve 900. When the heat exchange fan 200 moves axially towards the driving motor 800, the heat exchange fan 200 drives the connecting shell 810 to move synchronously, and the protruding portion 812 contacts the bearing sleeve 900, so that the bearing sleeve 900 buffers the connecting shell 810 and the heat exchange fan 200.

[0124] It should be noted that since the bearing sleeve 900 is installed in the installation portion, when the bearing sleeve 900 is located at the end of the installation portion close to the bottom wall of the accommodating portion 811, the protruding portion 812 contacts the bearing sleeve 900; when the bearing sleeve 900 is located inside the installation portion, the protruding portion 812 extends into the installation portion and contacts the bearing sleeve 900.

[0125] As Fig.14 shown, there is a second gap 802 along the axial direction of the heat exchange fan 200 between one end of the protruding portion 812 facing the stator 820 and one end of the bearing sleeve 900 facing the connecting shell 810, so as to prevent the protruding portion 812 from contacting the bearing sleeve 900 when the heat exchange fan 200 does not move axially, and avoid interference of the bearing sleeve 900 with the axial movement of the heat exchange fan 200.

[0126] As Fig.14 shown, the axial dimension of the first gap 801 along the axial direction of the heat exchange fan 200 is L1, and the distance of the second gap 802 along the axial direction of the heat exchange fan 200 is L2. L2 and L1 satisfy the relationship: L1 > L2, so that when the heat exchange fan 200 moves axially towards the stator 820, the protruding portion 812 first interacts with the bearing sleeve 900, and the bearing sleeve 900 prevents the heat exchange fan 200 from continuing to move through the protruding portion 812.

[0127] If L1 < L2, when the heat exchange fan 200 moves towards the stator 820, the bottom wall of the accommodating portion 811 first collides rigidly with the stator 820, and when the bottom wall of the accommodating portion 811 collides rigidly with the stator 820, the protruding portion 812 does not contact the bearing sleeve 900. Therefore, the bearing sleeve 900 cannot effectively play a buffering role.

[0128] If L1=L2, when the heat exchange fan 200 moves toward the stator 820, when the bottom wall of the accommodating portion 811 contacts the stator 820, the protrusion 812 contacts the bearing sleeve 900. Although the bearing sleeve 900 can play a certain buffering role on the protrusion 812, due to the mutual collision between the bottom wall of the accommodating portion 811 and the stator 820, the heat exchange fan 200 and / or the stator 820 are subjected to impact force, and the heat exchange fan 200 and the stator 820 are easily damaged, and the buffering effect of the bearing sleeve 900 is not good.

[0129] like Fig.12 As shown, a constraint portion 711 is provided on the inner wall of the motor housing 700 . The constraint portion 711 protrudes from the inner wall of the motor housing 700 . The constraint portion 711 is used to limit the installation position of the stator 820 in the motor housing 700 and fix the stator 820 so that the stator 820 is installed in the motor housing 700 .

[0130] A shock-absorbing rubber 730 is installed on the outer periphery of the stator 820 , and the shock-absorbing rubber 730 is used to absorb and buffer the vibration generated by the stator 820 when the driving motor 800 is working.

[0131] In some embodiments, the constraint portion 711 cooperates with the shock-absorbing rubber 730 so that the constraint portion 711 indirectly constrains the stator 820 .

[0132] The way in which the motor housing 700 constrains the stator 820 or the way in which the stator 820 is fixed to the motor housing 700 belongs to conventional technical means in the art and will not be described in detail here.

[0133] like Fig.12 As shown, one end of the connecting shell 810 away from the heat exchange fan 200 extends into the motor shell 700, so that the end of the stator 820 facing the heat exchange fan 200 can extend into the accommodating portion 811 and cooperate with the connecting shell 810.

[0134] There is a third gap between one end of the connecting shell 810 extending into the interior of the motor shell 700 and the side of the constraint part 711 facing the connecting shell 810 along the axial direction of the heat exchange fan 200 to prevent the connecting shell 810 and the constraint part 711 from contacting each other and generating friction when the connecting shell 810 rotates relative to the stator 820, so as to ensure the reliability of the rotation of the connecting shell 810.

[0135] like Fig.15 As shown, the axial dimension of the third gap along the heat exchange fan 200 is L3, and L3 and L2 satisfy the relationship: L3>L2, so that when the heat exchange fan 200 moves along its axial direction toward the stator 820, the protrusion 812 can first interact with the bearing sleeve 900, so that the bearing sleeve 900 prevents the heat exchange fan 200 from continuing to move through the protrusion 812.

[0136] If L3 < L2, when the heat exchange fan 200 moves towards the stator 820, the connecting shell 810 first has a hard collision with the restraining portion 711. Moreover, when the connecting shell 810 has a hard collision with the restraining portion 711, the convex portion 812 is not in contact with the bearing sleeve 900. Therefore, the bearing sleeve 900 cannot effectively play a buffering role.

[0137] If L3 = L2, when the heat exchange fan 200 moves towards the stator 820, when the connecting shell 810 contacts the restraining portion 711, the convex portion 812 is in contact with the bearing sleeve 900. Although the bearing sleeve 900 can play a certain buffering role for the convex portion 812, since the connecting shell 810 also collides with the restraining portion 711, the heat exchange fan 200 and the connecting shell 810 are subjected to impact forces, and the heat exchange fan 200 and the connecting shell 810 are liable to be damaged. Therefore, the buffering effect of the bearing sleeve 900 is not good.

[0138] In this application, a mating portion 814 is provided on the outer periphery of the connecting shell 810, and one end of the motor housing 700 facing the heat exchange fan 200 is disposed within the mating portion 814 so that the connecting shell 810 and the motor housing 700 cooperate with each other.

[0139] In some embodiments, the mating portion 814 is a mounting groove provided on the outer periphery of the connecting shell 810; the connecting shell 810 is provided with a second peripheral wall 816, and the second peripheral wall 816 is connected to the bottom wall and is located outside the first peripheral wall 815 so that the first peripheral wall 815, the second peripheral wall 816, and the bottom wall jointly define and form the mounting groove.

[0140] As Fig.15 shown, one end of the motor housing 700 extending into the mating portion 814 and the side of the bottom wall facing the stator 820 have a fourth gap along the axial direction of the heat exchange fan 200; the axial dimension of the fourth gap along the heat exchange fan 200 is L4, and L4 and L2 satisfy the relationship: L4 > L2, so that when the heat exchange fan 200 moves axially towards the stator 820, the convex portion 812 can first interact with the bearing sleeve 900, and the bearing sleeve 900 can prevent the heat exchange fan 200 from continuing to move through the convex portion 812.

[0141] If L4 < L2, when the heat exchange fan 200 moves towards the stator 820, the motor housing 700 first has a hard collision with the mating portion 814. Moreover, when the motor housing 700 has a hard collision with the mating portion 814, the convex portion 812 is not in contact with the bearing sleeve 900. Therefore, the bearing sleeve 900 cannot effectively play a buffering role.

[0142] If L4 = L2, when the heat exchange fan 200 moves towards the stator 820 and the motor housing 700 contacts the mating part 814, the protruding part 812 contacts the bearing sleeve 900. Although the bearing sleeve 900 can play a certain buffering role for the protruding part 812, since the motor housing 700 and the mating part 814 also collide with each other, the heat exchange fan 200 and the motor housing 700 are subject to impact forces, and the heat exchange fan 200 and the motor housing 700 are prone to damage. Therefore, the buffering effect of the bearing sleeve 900 is not good.

[0143] In the present application, a limiting part 821 is provided on the outer periphery of the stator 820. The limiting part 821 protrudes from the outer periphery of the stator 820 and is correspondingly arranged with one end of the connecting shell 810 extending into the motor housing 700 to position the relative position of the connecting shell 810 and the stator 820.

[0144] As Fig.15 shown, there is a fifth gap along the axial direction of the heat exchange fan 200 between one end of the connecting shell 810 extending into the motor housing 700 and the side of the limiting part 821 facing the connecting shell 810 to prevent the connecting shell 810 from contacting the restraining part 711 and generating friction when the connecting shell 810 rotates relative to the stator 820, so as to ensure the reliability of the rotation of the connecting shell 810.

[0145] The axial dimension of the fifth gap along the heat exchange fan 200 is L5, and L5 and L2 satisfy the relationship: L5 > L2, so that when the heat exchange fan 200 moves axially towards the stator 820, the protruding part 812 can first interact with the bearing sleeve 900, and the bearing sleeve 900 can prevent the heat exchange fan 200 from continuing to move through the protruding part 812.

[0146] If L5 < L2, when the heat exchange fan 200 moves towards the stator 820, the connecting shell 810 first has a hard collision with the limiting part 821, and when the connecting shell 810 has a hard collision with the limiting part 821, the protruding part 812 does not contact the bearing sleeve 900. Therefore, the bearing sleeve 900 cannot effectively play a buffering role.

[0147] If L5 = L2, when the heat exchange fan 200 moves towards the stator 820 and the connecting shell 810 contacts the limiting part 821, the protruding part 812 contacts the bearing sleeve 900. Although the bearing sleeve 900 can play a certain buffering role for the protruding part 812, since the connecting shell 810 and the limiting part 821 also collide with each other, the heat exchange fan 200 and the connecting shell 810 are subject to impact forces, and the heat exchange fan 200 and the connecting shell 810 are prone to damage. Therefore, the buffering effect of the bearing sleeve 900 is not good.

[0148] It should be noted that in the above-mentioned wall-mounted air-conditioning indoor unit, other gaps may be defined and formed between the connecting shell 810 and the stator 820, and between the connecting shell 810 and the motor shell 700 along the axial direction of the heat exchange fan 200, which are not listed here one by one.

[0149] In the gaps defined along the axial direction of the heat exchange fan 200 between the connecting shell 810 and the stator 820 and between the connecting shell 810 and the motor shell 700, the second gap 802 between the protrusion 812 and the bearing sleeve 900 is the smallest along the axial direction of the heat exchange fan 200 to ensure that when the heat exchange fan 200 moves along its axial direction toward the stator 820, the protrusion 812 first contacts the bearing sleeve 900.

[0150] The projection of the protrusion 812 along the axial direction of the heat exchange fan 200 is located within the projection of the bearing sleeve 900 along the axial direction of the heat exchange fan 200 on the side facing the connecting shell 810, so that the bearing sleeve 900 can fully contact the protrusion 812. When the heat exchange fan 200 moves along its axial direction toward the stator 820, the bearing sleeve 900 can reliably contact the protrusion 812 to prevent the heat exchange fan 200 from continuing to move toward the stator 820.

[0151] In some embodiments, the cross-sectional shape of the protrusion 812 along the axial direction of the heat exchange fan 200 is circular, and the center of the protrusion 812 is located on the axis of the bearing sleeve 900; the outer diameter of the protrusion 812 facing the stator 820 is D1, and the outer diameter of the bearing sleeve 900 facing the connecting shell 810 is H1, and H1 and D1 satisfy the relationship: H1>D1.

[0152] If H1=D1, the area of ​​the protrusion 812 facing one end of the bearing sleeve 900 is the same as the area of ​​the bearing sleeve 900 facing the protrusion 812. If the protrusion 812 deviates along the radial direction of the heat exchange fan 200, the protrusion 812 cannot fully contact with the bearing sleeve 900, which may reduce the buffering effect of the bearing sleeve 900 on the heat exchange fan 200.

[0153] If H1<D1, the area of ​​the protrusion 812 facing one end of the bearing sleeve 900 is larger than the area of ​​the bearing sleeve 900 facing the protrusion 812, the bearing sleeve 900 cannot fully contact with the protrusion 812, and the bearing sleeve 900 has a poor buffering effect on the heat exchange fan 200. When the heat exchange fan 200 moves along its axial direction close to the stator 820, the protrusion 812 may contact with the inner wall of the motor housing 700 facing the heat exchange fan 200, causing damage to the heat exchange fan 200.

[0154] like Fig.11As shown, a through portion 813 through which the connecting shaft 830 passes is defined inside the convex portion 812. The connecting shaft 830 passes through the through portion 813 and is connected to the bearing sleeve 900 provided on the stator 820 through a first bearing 831. By arranging the convex portion 812 along the circumferential direction of the connecting shaft 830, interference between the convex portion 812 and the connection between the connecting shaft 830 and the stator 820 is avoided.

[0155] It should be noted that after the through portion 813 is provided on the convex portion 812, one end of the convex portion 812 facing the stator 820 is annular. The inner diameter of the end of the convex portion 812 facing the stator 820 is D2, and the outer diameter is D1.

[0156] The inner diameter of the end of the bearing sleeve 900 facing the connection housing 810 is H2, and the outer diameter is H1; H1, H2, D1, and D2 satisfy the relationship: D2 > H2, D1 < H1, so that the convex portion 812 can fully contact the bearing sleeve 900.

[0157] If D2 = H2, the inner diameter of the convex portion 812 is equal to the inner diameter of the bearing sleeve 900. When the convex portion 812 contacts the bearing sleeve 900, theoretically, the inner wall of the convex portion 812 is aligned with the inner wall of the bearing sleeve 900. If the axes of the convex portion 812 and the bearing sleeve 900 are not collinear, at least part of the convex portion 812 is in contact with the bearing sleeve 900, and the buffering effect of the bearing sleeve 900 on the heat exchange fan 200 will be weakened.

[0158] If D2 < H2, the inner diameter of the convex portion 812 is smaller than the inner diameter of the bearing sleeve 900. When the convex portion 812 contacts the bearing sleeve 900, at least part of the convex portion 812 is in contact with the bearing sleeve 900, and the buffering effect of the bearing sleeve 900 on the heat exchange fan 200 will be weakened.

[0159] If D1 = H1, the outer diameter of the convex portion 812 is equal to the outer diameter of the bearing sleeve 900. When the convex portion 812 contacts the bearing sleeve 900, theoretically, the outer wall of the convex portion 812 is aligned with the outer wall of the bearing sleeve 900. If the axes of the convex portion 812 and the bearing sleeve 900 are not collinear, at least part of the convex portion 812 is in contact with the bearing sleeve 900, and the buffering effect of the bearing sleeve 900 on the heat exchange fan 200 will be weakened.

[0160] If D1 > H1, the outer diameter of the convex portion 812 is greater than the outer diameter of the bearing sleeve 900. When the convex portion 812 contacts the bearing sleeve 900, at least part of the convex portion 812 is in contact with the bearing sleeve 900, and the buffering effect of the bearing sleeve 900 on the heat exchange fan 200 will be weakened.

[0161] In the above-mentioned wall-mounted air-conditioning indoor unit, when the heat exchange fan 200 moves along the axial direction of the heat exchange fan 200 in a direction away from the driving motor 800, the heat exchange fan 200 and the bearing seat 600 contact each other, and the bearing seat 600 buffers the heat exchange fan 200 to prevent the heat exchange fan 200 from being damaged by a hard collision with the casing 100 or other components.

[0162] When the heat exchange fan 200 moves along the axial direction of the heat exchange fan 200 toward the stator 820, the heat exchange fan 200 drives the connecting shell 810 to move synchronously, and the protrusion 812 extends into the mounting portion and contacts the bearing sleeve 900. The bearing sleeve 900 buffers the connecting shell 810 and the heat exchange fan 200 through the protrusion 812 to avoid the bottom wall of the accommodating portion 811 colliding with the stator 820 or the connecting shell 810 colliding with the motor housing 700 to damage the heat exchange fan 200 and / or the drive motor 800.

[0163] In order to facilitate the stator 820 to be disposed in the motor housing 700 or to facilitate the stator 820 to be removed from the motor housing 700, the motor housing 700 is designed as a split structure in the present application.

[0164] Specifically, Figure 8 and Fig.12 As shown, the motor housing 700 includes a shell 710 , and a through cavity is defined inside the shell 710 . The through cavity is arranged along the length direction of the housing 100 , and at least a part of the stator 820 is arranged in the through cavity.

[0165] like Fig.15 As shown, the side of the connecting shell 810 away from the heat exchange fan 200 extends into the through cavity from the through cavity toward the opening at one end of the heat exchange fan 200, so that part of the stator 820 can be arranged in the accommodating portion 811 and cooperate with the connecting shell 810.

[0166] It should be noted that the connection portion 701 is disposed on the outer periphery of the housing 710 so that the housing 710 is mounted on the base 120. The constraint portion 711 is disposed on the inner wall of the housing 710 to limit the location of the stator 820 in the through cavity.

[0167] like Figure 8 As shown, the motor housing 700 includes a cover body 720, which is disposed at the through portion 813 in an openable and closable manner to block the opening of the through cavity away from one end of the heat exchange fan 200, so that the stator 820 is firmly disposed in the through cavity.

[0168] It should be noted that the opening and closing arrangement of the cover body 720 belongs to the prior art in this field and will not be described in detail here.

[0169] like Figure 4As shown, the wall-mounted air conditioner indoor unit includes a motor shield 500, which is arranged on the periphery of the motor housing 700, and the motor shield 500 is connected to the motor housing 700 and the base 120. The motor shield 500 and the base 120 jointly clamp the motor housing 700, thereby increasing the firmness of the connection between the motor housing 700 and the base 120.

[0170] The motor shield 500 is provided with ears, which are connected to the base 120 via fasteners such as bolts or screws, so that the motor shield 500 is installed on the base 120 .

[0171] In some embodiments, the connecting portion 701 is arranged corresponding to the ear portion so that the same fastener can simultaneously connect the motor shield 500, the motor housing 700 and the base 120, thereby increasing the assembly efficiency of the motor shield 500, the motor housing 700 and the base 120, and saving the number of fasteners used.

[0172] The above-mentioned wall-mounted air-conditioning indoor unit sets a support shaft by making the end of the heat exchange fan 200 away from the driving motor 800, and sets a bearing seat 600 on the base 120, so that the support shaft is connected to the bearing seat 600 through the second bearing, so that the base 120 supports the heat exchange fan 200, thereby increasing the reliability and stability of the operation of the heat exchange fan 200; and the bearing seat 600 is set corresponding to the end of the heat exchange fan 200 away from the driving motor 800. When the heat exchange fan 200 moves along the axial direction of the heat exchange fan 200 toward the direction away from the driving motor 800, the heat exchange fan 200 and the bearing seat 600 contact each other, so that the bearing seat 600 can buffer the heat exchange fan 200 and avoid the heat exchange fan 200 from being damaged by a hard collision with the casing 100.

[0173] The above-mentioned wall-mounted air-conditioning indoor unit is provided with a connecting shaft 830 so that the connecting shaft 830 supports the relative rotation between the outer rotor 840 and the stator 820 through the connecting shell 810, thereby preventing the axis of the outer rotor 840 from deviating downward from the axis of the stator 820 under the action of the gravity of the heat exchange fan 200, thereby ensuring that the outer rotor 840 and the stator 820 are arranged coaxially; by providing a protrusion 812 on the side of the connecting shell 810 away from the heat exchange fan 200, the protrusion 812 is correspondingly arranged with the bearing sleeve 900, when the heat exchange fan 200 moves toward the stator 820, the protrusion 812 and the bearing sleeve 900 contact each other, so that the bearing sleeve 900 can buffer the heat exchange fan 200, thereby preventing the heat exchange fan 200 from being damaged by a hard collision with the stator 820 through the connecting shell 810.

[0174] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0175] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A wall mounted air conditioner indoor unit, characterized in that: include: A casing, comprising at least a casing air inlet and a casing air outlet, wherein the casing air inlet is opened at the top of the casing, and the casing air outlet is opened at the front bottom of the casing; the casing air inlet and the casing air outlet extend along the length direction of the casing respectively; A heat exchanger is disposed inside the casing and close to the air inlet of the casing; The heat exchanger is mounted on the base of the casing; A heat exchange fan is arranged inside the casing, and the heat exchange fan is located on the leeward side of the heat exchanger; the axial direction of the heat exchange fan is arranged along the length direction of the casing; A driving motor is arranged inside the housing; the driving motor and the heat exchange fan are arranged along the axial direction of the heat exchange fan; The drive motor further comprises: a stator mounted on the housing; An outer rotor having an insertion portion for at least a portion of the stator to be inserted into; the outer rotor can rotate relative to the stator to drive the heat exchange fan to rotate; A connecting shell connected to one end of the heat exchange fan facing the drive motor; a receiving portion is defined in the connecting shell, and the outer rotor is arranged in the receiving portion; the receiving portion is communicated with the insertion portion; 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 the axial direction of the heat exchange fan; A connecting shaft is arranged along the axial direction of the heat exchange fan; one end of the connecting shaft in the length direction is connected to the connecting shell, and the other end of the connecting shaft in the length direction is connected to a first bearing; A bearing sleeve, which is arranged on the stator and is used to connect the first bearing; the bearing sleeve is arranged on a side of the stator close to the heat exchange fan; The raised portion is arranged on the side of the connecting shell away from the heat exchange fan, and the raised portion and the stator are arranged opposite to each other along the axial direction of the heat exchange fan; the raised portion and the bearing sleeve are arranged correspondingly, so that when the heat exchange fan drives the outer rotor to move toward the stator through the connecting shell, the raised portion and the bearing sleeve contact each other.

2. A wall mounted air conditioner indoor unit, characterized in that: include: A casing, comprising at least a casing air inlet and a casing air outlet, wherein the casing air inlet is opened at the top of the casing, and the casing air outlet is opened at the front bottom of the casing; the casing air inlet and the casing air outlet extend along the length direction of the casing respectively; A heat exchanger is disposed inside the casing and close to the air inlet of the casing; A heat exchange fan is arranged inside the casing, and the heat exchange fan is located on the leeward side of the heat exchanger; the axial direction of the heat exchange fan is arranged along the length direction of the casing; A driving motor is arranged inside the housing; the driving motor and the heat exchange fan are arranged along the axial direction of the heat exchange fan; The drive motor further comprises: a stator mounted on the housing; An outer rotor having an insertion portion for at least a portion of the stator to be inserted into; the outer rotor can rotate relative to the stator to drive the heat exchange fan to rotate; A connecting shell connected to one end of the heat exchange fan facing the drive motor; a receiving portion is defined in the connecting shell, and the outer rotor is arranged in the receiving portion; the receiving portion is communicated with the insertion portion; 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 the axial direction of the heat exchange fan; A connecting shaft is arranged along the axial direction of the heat exchange fan; one end of the connecting shaft in the length direction is connected to the connecting shell, and the other end of the connecting shaft in the length direction is connected to a first bearing; a first mounting portion extending along the axial direction of the heat exchange fan; the first mounting portion at least penetrates the stator along its extending direction and faces the side of the heat exchange fan; a bearing sleeve for connecting the first bearing is provided in the mounting portion; A raised portion, wherein the raised portion is arranged on a side of the connecting shell away from the heat exchange fan, and the raised portion and the stator are arranged opposite to each other along the axial direction of the heat exchange fan; the raised portion and the bearing sleeve are arranged correspondingly, so that when the heat exchange fan drives the outer rotor to move toward the stator through the connecting shell, the raised portion extends into the first mounting portion and contacts the bearing sleeve.

3. The wall-mounted air conditioner indoor unit according to claim 1 or 2, characterized in that: The axial dimension of the first gap along the heat exchange fan is L1, the distance between the end of the protrusion facing the stator and the end of the bearing sleeve facing the connecting shell along the axial direction of the heat exchange fan is L2, and L1 and L2 satisfy the relationship: L1>L2.

4. The wall-mounted air conditioner indoor unit according to claim 1 or 2, characterized in that: The projection of the protrusion along the axial direction of the heat exchange fan is located within the projection of the side of the bearing sleeve facing the connecting shell along the axial direction of the heat exchange fan.

5. The wall-mounted air conditioner indoor unit according to claim 1 or 2, characterized in that: The outer diameter of the protrusion facing the stator is D1, the outer diameter of the bearing sleeve facing the connection shell is H1, and L1 and D1 satisfy the relationship: H1>D1.

6. The wall-mounted air conditioner indoor unit according to claim 1 or 2, characterized in that: The protrusion defines a through portion for the connecting shaft to pass through, and the connecting shaft passes through the through portion to connect with the first bearing; the inner diameter of the protrusion facing the stator end is D2, and the outer diameter is D1; ​​the inner diameter of the bearing sleeve facing the connecting shell end is H2, and the outer diameter is H1; H1, H2, D1, D2 satisfy the relationship: D2>H2, D1 <H1。 7. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that: The casing is also equipped with a motor casing, and the stator is installed on the motor casing; a restraining portion is provided on the inner wall of the motor casing, and the restraining portion protrudes from the inner wall of the motor casing; the connecting casing extends into the motor casing on a side away from the heat exchange fan.

8. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that: A distance between a side of the connecting shell extending into the motor shell and a side of the constraint portion facing the heat exchange fan along the axial direction of the heat exchange fan is L3, and L3 and L2 satisfy the relationship: L3>L2.

9. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that: A mating portion is provided on the outer periphery of the connecting shell, and one end of the motor shell facing the heat exchange fan is provided in the mating portion; the distance between one end of the motor shell provided on the mating portion and the mating portion along the axial direction of the heat exchange fan is L4, and L4 and L2 satisfy the relationship: L4>L2.

10. The wall-mounted air conditioner indoor unit according to claim 1 or 2, characterized in that: A support shaft is provided at one end of the heat exchange fan away from the connecting shell, and the support shaft is connected to a second bearing; the casing is provided with a bearing seat for connecting the second bearing, and the bearing seat is arranged corresponding to the end of the heat exchange fan away from the connecting shell; when the heat exchange fan moves along its axial direction toward a direction away from the drive motor, the heat exchange fan and the bearing seat are in contact with each other.

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