Hanging type air conditioner

Abstract

An indoor unit of the hanging type air conditioner comprises a machine shell, an indoor heat exchanger, a heat exchange fan, a mounting base and a driving motor, the mounting base is provided with a motor mounting groove and a first shaft hole which are oppositely arranged, a first rotating shaft of the heat exchange fan penetrates through the first shaft hole, and the driving motor is arranged in the motor mounting groove and connected with the heat exchange fan; the driving motor comprises an inner stator arranged in the motor mounting groove and an outer rotor arranged on the outer side of the inner stator in the radial direction in a sleeving mode, the outer rotor is connected with the heat exchange fan, in the length direction of the machine shell, the maximum moving distance of the outer rotor and the heat exchange fan in the direction away from the inner stator is L1, the maximum depth of the outer rotor inserted into the motor mounting groove is L2, L2 is larger than L1, or L2 is larger than L2. In the length direction of the machine shell, the sum of the maximum depths of the outer rotor and the heat exchange fan inserted into the motor installation groove is L3, and L3 is larger than L1. According to the invention, when the outer rotor is reset after moving, the situation that the outer rotor is damaged due to the fact that the outer rotor collides with the mounting base is avoided.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and more particularly to a wall-mounted air conditioner. Background Technology

[0002] With the development of air conditioning technology, air conditioning products are constantly being updated and replaced. From the evolution of air conditioning models, the earliest air conditioning model was the integrated window air conditioner. Now, split air conditioners are the mainstream model. Floor-standing air conditioners and wall-mounted air conditioners are two important branches of today's split air conditioners. As the name suggests, floor-standing air conditioners are air conditioners with indoor units in the shape of columns and installed on the ground, while wall-mounted air conditioners are air conditioners with indoor units suspended on the wall by components such as back panels and brackets.

[0003] The indoor unit of the wall-mounted air conditioner is equipped with a drive motor and a heat exchange fan. The drive motor drives the heat exchange fan to rotate, so that indoor air is introduced into the indoor unit through the heat exchange air inlet. After heat exchange, the air flows into the room through the heat exchange air outlet.

[0004] In related technologies, the drive motor used to drive the heat exchange fan can be an external rotor motor, which includes an inner stator and an outer rotor. The inner stator is installed and fixed inside the indoor unit by a mounting bracket, and the outer rotor is located outside the inner stator. The two are locked together by levitation force. The outer rotor is connected to the heat exchange fan. When the inner stator is energized, the outer rotor rotates relative to the inner stator, thereby driving the heat exchange fan to rotate.

[0005] However, since the outer rotor and inner stator are locked together by a levitation force, which is relatively weak, the outer rotor will break free from the inner stator's restraint when it falls. This causes the outer rotor and heat exchange fan to easily move around in the air duct. When the outer rotor tries to reset after moving around, it is easy to hit the mounting base, which can easily damage the outer rotor and affect its reset. Utility Model Content

[0006] This application discloses a wall-mounted air conditioner that can prevent the outer rotor from hitting the mounting base and damaging the outer rotor when it is reset after being moved, and ensures that the outer rotor can be reset smoothly.

[0007] To achieve the above objectives, some embodiments of this application disclose a wall-mounted air conditioner, which includes:

[0008] Indoor unit;

[0009] The indoor unit includes:

[0010] The housing has a heat exchange air duct, an air inlet and an air outlet communicating with the heat exchange air duct;

[0011] A mounting seat is arranged in the casing, and a heat exchange air duct is formed between the mounting seat and the casing, which respectively communicates with the air inlet and the air outlet, and the mounting seat is provided with a motor mounting groove and a first shaft hole arranged oppositely along the length direction of the casing;

[0012] An indoor heat exchanger is arranged in the heat exchange air duct;

[0013] A heat exchange fan is arranged in the heat exchange air duct and located at the leeward side of the indoor heat exchanger, which is used to drive indoor air to enter the heat exchange air duct through the air inlet, and the indoor air is heat exchanged by the indoor heat exchanger, and then the heat exchanged indoor air is discharged through the air outlet, and the heat exchange fan is provided with a first rotating shaft which is arranged in the first shaft hole; and

[0014] A driving motor is arranged in the motor mounting groove, and the driving motor is connected with the heat exchange fan and used to drive the heat exchange fan to rotate, and the driving motor comprises:

[0015] An inner stator is arranged in the motor mounting groove; and

[0016] An outer rotor is arranged radially outside the inner stator and can rotate relative to the inner stator, and the outer rotor is connected with the heat exchange fan;

[0017] In the length direction of the casing, the maximum distance of the outer rotor and the heat exchange fan moving away from the inner stator is L1, the maximum depth of the outer rotor inserted into the motor mounting groove is L2, and L2>L1, or in the length direction of the casing, the sum of the maximum depths of the outer rotor and the heat exchange fan inserted into the motor mounting groove is L3, and L3>L1.

[0018] In the hanging type air conditioner indoor unit in the present application, by making the maximum depth of the outer rotor inserted into the motor mounting groove greater than the maximum distance of the outer rotor and the heat exchange fan moving away from the inner stator, or making the sum of the maximum depth of the outer rotor and the heat exchange fan inserted into the motor mounting groove greater than the maximum distance of the outer rotor and the heat exchange fan moving away from the inner stator, when the indoor unit falls and causes the outer rotor and the heat exchange fan to move away from the inner stator, even when the outer rotor and the heat exchange fan move away from the inner stator to the maximum distance, the outer rotor still has part located in the motor mounting groove, avoiding the outer rotor completely separating from the motor mounting groove and located outside the motor mounting groove, and the outer rotor moving along the radial direction of the heat exchange fan, causing the projection of the outer rotor in the length direction of the cabinet to have part located outside the motor mounting groove, that is, avoiding the outer rotor and the motor mounting groove misaligned and not corresponding in the length direction of the cabinet, so as to avoid the outer rotor abutting and impacting the mounting seat when the outer rotor and the heat exchange fan reset after moving and under the action of the magnetic force, thereby reducing the probability of damaging the outer rotor, and ensuring that the outer rotor and the heat exchange fan can reset smoothly, so as to ensure that the outer rotor can cooperate with the inner stator smoothly, drive the heat exchange fan to rotate smoothly, and further ensure that the indoor unit can operate smoothly and normally.

[0019] As an optional embodiment, in the embodiments of the present application, the mounting seat is further provided with a receiving groove, the receiving groove is oppositely arranged with the motor mounting groove in the length direction of the cabinet, and the first shaft hole is arranged on the groove bottom surface of the receiving groove, and part of the heat exchange fan is located in the receiving groove.

[0020] In the length direction of the cabinet, the maximum distance of the outer rotor and the heat exchange fan moving away from the first shaft hole is L4, and the depth of the heat exchange fan inserted into the receiving groove is L5, and L5>L4.

[0021] In this way, when the indoor unit falls and causes the outer rotor and the heat exchange fan to move away from the first shaft hole, even when the outer rotor and the heat exchange fan move away from the first shaft hole to the maximum distance, the heat exchange fan still has part located in the receiving groove, avoiding the heat exchange fan completely separating from the receiving groove and located outside the receiving groove, and the heat exchange fan moving along the radial direction thereof, causing the projection of the heat exchange fan in the length direction of the cabinet to have part located outside the receiving groove, that is, avoiding the heat exchange fan and the receiving groove misaligned and not corresponding in the length direction of the cabinet, so as to avoid the heat exchange fan abutting and impacting the mounting seat when the outer rotor and the heat exchange fan reset after moving and under the action of the magnetic force, thereby reducing the probability of damaging the heat exchange fan, and ensuring that the outer rotor and the heat exchange fan can reset smoothly, so as to ensure that the outer rotor can cooperate with the inner stator smoothly, drive the heat exchange fan to rotate smoothly, and further ensure that the indoor unit can operate smoothly and normally.

[0022] As an optional implementation, in the embodiments of the present application, the heat exchange fan comprises:

[0023] a first end cover connected with the outer rotor;

[0024] a second end cover spaced apart from the first end cover along the length direction of the casing, and the first rotating shaft is arranged on the side of the second end cover away from the first end cover; and

[0025] a fan blade connected between the first end cover and the second end cover;

[0026] The mounting seat is further provided with a receiving groove opposite to the motor mounting groove along the length direction of the casing, wherein the first shaft hole is arranged on the groove bottom surface of the receiving groove, and the second end cover is located in the receiving groove.

[0027] The groove side wall of the receiving groove is provided with a first groove below the second end cover, and the first groove is used for collecting condensed water dripping from the second end cover.

[0028] In this way, the condensed water on the second end cover can be prevented from directly dripping to the ground, thereby improving the user experience.

[0029] As an optional implementation, in the embodiments of the present application, in the radial direction of the heat exchange fan, the outer circumferential side surface of the second end cover protrudes outwardly beyond the outer circumferential side surface of the fan blade.

[0030] In the length direction of the casing, the thickness of the second end cover is H1, and the width of the first groove is w1, and w1

[0031] When the above relationship is satisfied, in the case that the indoor unit falls and the outer rotor and the heat exchange fan move away from the inner stator, even in the case that the outer rotor and the heat exchange fan move away from the inner stator to the maximum distance, the second end cover can be prevented from falling completely into the first groove to cause the fan blade to contact the groove side wall of the receiving groove, so that the second end cover contacts the groove side wall of the receiving groove first when the heat exchange fan moves away from the inner stator to the maximum displacement, instead of the fan blade, thereby protecting the fan blade and avoiding damage to the fan blade.

[0032] As an optional implementation, in the embodiments of the present application, the heat exchange fan comprises:

[0033] a first end cover connected with the outer rotor, and the first end cover is located in the motor mounting groove;

[0034] A second end cover is arranged at a position spaced apart from the first end cover along the length direction of the casing, and the first rotating shaft is arranged at a side of the second end cover away from the first end cover.

[0035] A fan blade is connected between the first end cover and the second end cover.

[0036] The groove side wall of the motor mounting groove is provided with a second groove for collecting condensed water dripping from the first end cover.

[0037] In this way, the condensed water on the second end cover can be prevented from directly dripping to the ground, thereby improving user experience.

[0038] As an optional embodiment, in the embodiment of the present application, the outer circumferential side of the first end cover protrudes outwardly beyond the outer circumferential side of the fan blade in the radial direction of the heat exchange fan.

[0039] The thickness of the first end cover in the length direction of the casing is H2, and the width of the second groove is w2, and w2

[0040] When the above relationship is satisfied, in the case that the indoor unit falls down and the outer rotor and the heat exchange fan move in a direction away from the first shaft hole, even in the case that the outer rotor and the heat exchange fan move in the direction away from the first shaft hole to the maximum distance, the first end cover can be prevented from falling completely into the second groove and causing the fan blade to contact the groove side wall of the receiving groove, so that the heat exchange fan still contacts the groove side wall of the motor mounting groove first when the heat exchange fan moves in the direction away from the first shaft hole to the maximum distance, instead of the fan blade, thereby protecting the fan blade and avoiding damage to the fan blade.

[0041] As an optional embodiment, in the embodiment of the present application, the indoor unit further comprises:

[0042] A first bearing is arranged between the first rotating shaft and the first shaft hole.

[0043] A first elastic shaft sleeve is arranged between the first bearing and the first shaft hole, and the outer circumferential surface of the first elastic shaft sleeve is provided with a plurality of first protruding ribs arranged in a spaced apart manner along the circumferential direction of the first elastic shaft sleeve.

[0044] Since the first protruding ribs are generally elongated structures, prone to deformation, when the first elastic shaft sleeve is assembled to the first shaft hole, the first protruding ribs will be deformed by the extrusion of the hole wall surface of the first shaft hole, and it can be understood that when the bearing seat exists, the first protruding ribs will be deformed by the extrusion of the inner surface of the bearing seat, so that the first elastic shaft sleeve is fixed in the first shaft hole, which can effectively prevent the radial jump of the first bearing, and ensure that the first rotating shaft can rotate smoothly relative to the first bearing, thereby facilitating the improvement of the rotating stability of the heat exchange fan and reducing the generation of noise.

[0045] In addition, the arrangement of the plurality of first protruding ribs can strengthen the structural strength of the first elastic shaft sleeve, avoid excessive deformation of the first elastic shaft sleeve, thereby reducing the radial jump displacement of the heat exchange fan, making the heat exchange fan more stable in the mounting seat, and protecting the fan blades.

[0046] As an optional embodiment, in the embodiment of the present application, the inner stator is provided with a second shaft hole with an axis extending along the axial direction of the first rotating shaft, and the inner part of the outer rotor is provided with a second rotating shaft, which is arranged in the second shaft hole.

[0047] By arranging the second rotating shaft in the inner part of the rotor shell and making the second rotating shaft pass through the hollow part of the magnetic ring and be inserted into the second shaft hole of the inner stator, the outer rotor can be supported by the inner stator in the radial direction through the second rotating shaft, so that the outer rotor has sufficient radial support, the rotating stability of the outer rotor is improved, and the generation of noise is reduced.

[0048] As an optional embodiment, in the embodiment of the present application, the indoor unit further comprises:

[0049] a second bearing arranged between the second rotating shaft and the second shaft hole; and

[0050] a second elastic shaft sleeve arranged between the second bearing and the second shaft hole, and the outer circumferential surface of the second elastic shaft sleeve is provided with a plurality of second protruding ribs, and the plurality of second protruding ribs are arranged in a spaced manner along the circumferential direction of the second elastic shaft sleeve.

[0051] Since the second protruding ribs are generally elongated structures, prone to deformation, when the second elastic shaft sleeve is assembled to the second shaft hole, the second protruding ribs will be deformed by the extrusion of the hole wall surface of the second shaft hole, thereby facilitating the interference fixation of the second elastic shaft sleeve in the second shaft hole, which can effectively prevent the radial jump of the second bearing, and ensure that the second rotating shaft can rotate smoothly relative to the second bearing, thereby facilitating the improvement of the rotating stability of the heat exchange fan and reducing the generation of noise.

[0052] In addition, the arrangement of the plurality of second protruding ribs can strengthen the structural strength of the second elastic shaft sleeve, avoid excessive deformation of the second elastic shaft sleeve, and thus reduce the radial displacement of the heat exchange fan, so that the heat exchange fan is more stable in the mounting seat and the fan blades are protected.

[0053] As an optional embodiment, in the embodiment of the present application, the heat exchange fan comprises:

[0054] a first end cover connected with the outer rotor;

[0055] a second end cover arranged at a distance from the first end cover along the length direction of the casing, and the first rotating shaft is arranged on the side of the second end cover away from the first end cover; and

[0056] a fan blade connected between the first end cover and the second end cover;

[0057] The outer rotor comprises:

[0058] a rotor shell sleeved on the outer side in the radial direction of the inner stator, and the rotor shell is integrally formed with the first end cover; and

[0059] a magnetic ring arranged in the rotor shell and nested on the outer side in the radial direction of the inner stator.

[0060] In this way, since the material of the rotor shell is usually plastic and the cost is usually low, compared with the structure in which the rotor shell and the magnetic ring are integrated and the entire outer rotor is made of magnetic material, the outer rotor in the present application adopts the structure in which the rotor shell and the magnetic ring are separately arranged, so that the material of the rotor shell can be different from that of the magnetic ring, for example, plastic with low cost, thereby facilitating the reduction of the cost of the outer rotor.

[0061] Moreover, the rotor shell is integrally formed with the first end cover, for example, the outer rotor can be injection molded to be connected to the first end cover of the heat exchange fan, so that the rotor shell and the first end cover can share one component, reducing the number of parts and saving cost; at the same time, it can also reduce the distance between the driving motor and the heat exchange fan, save the space of the main body after the driving motor and the heat exchange fan are connected in the length direction of the casing, and thus facilitate the reduction of the appearance size of the indoor unit, achieving the effect of small size and beauty.

[0062] Compared with the prior art, the present application has the following advantages:

[0063] The wall-mounted air conditioner provided in this application embodiment, by ensuring that the maximum depth of the outer rotor inserted into the motor mounting slot is greater than the maximum distance the outer rotor and heat exchange fan move away from the inner stator, or by ensuring that the sum of the maximum depths of the outer rotor and heat exchange fan inserted into the motor mounting slot is greater than the maximum distance the outer rotor and heat exchange fan move away from the inner stator, can ensure that even when the outer rotor and heat exchange fan move away from the inner stator to their maximum distance due to a drop of the indoor unit, a portion of the outer rotor remains within the motor mounting slot, preventing the outer rotor from completely detaching from the motor mounting slot and remaining within the motor mounting area. The outer rotor moves radially along the heat exchange fan outside the mounting slot, causing part of its projection along the length of the casing to lie outside the motor mounting slot. This avoids the situation where the outer rotor and the motor mounting slot do not align along the length of the casing, thus preventing the outer rotor from colliding with the mounting base when it resets under magnetic force after moving. This reduces the chance of damaging the outer rotor and ensures that the outer rotor and heat exchange fan can reset smoothly, allowing the outer rotor to cooperate smoothly with the inner stator and drive the heat exchange fan to rotate, thereby ensuring the smooth and normal operation of the indoor unit. Attached Figure Description

[0064] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0065] Figure 1 A simplified structural diagram of the mounting base and drive motor in related technologies;

[0066] Figure 2 A simplified structural diagram of the outer rotor of a drive motor impacting the mounting base in a related technology;

[0067] Figure 3 This is a schematic diagram of the structure of the wall-mounted air conditioner disclosed in the embodiments of this application;

[0068] Figure 4 This is a schematic diagram of the structure of the indoor unit disclosed in the embodiments of this application;

[0069] Figure 5 The indoor unit disclosed in the embodiments of this application is along Figure 4 A schematic diagram of the structure in the AA direction;

[0070] Figure 6 This is a top view of the indoor unit disclosed in the embodiments of this application;

[0071] Figure 7is a structure schematic view of the indoor unit along the B-B direction in Figure 6

[0072] Figure 8 is a partial enlarged view at M in Figure 7

[0073] Figure 9 is a first partial enlarged view at N in Figure 7

[0074] Figure 10 is a second partial enlarged view at N in Figure 7

[0075] Figure 11 is a partial enlarged view at O in Figure 8

[0076] Figure 12 is a partial enlarged view at P in Figure 10

[0077] Figure 13 is a structure schematic view of the first elastic shaft sleeve;

[0078] Figure 14 is a structure schematic view of the second elastic shaft sleeve;

[0079] Main figure mark explanation

[0080] 100 - hanging type air conditioner;

[0081] 10 - indoor unit; 11 - machine shell; 111 - heat exchange air duct; 112 - air inlet; 113 - air outlet; 114 - air inlet grille; 115 - air deflector; 12 - indoor heat exchanger; 13 - heat exchange fan; 13a - first rotating shaft; 131 - first end cover; 132 - second end cover; 133 - fan blade; 14 - mounting seat; 141 - motor mounting groove; 1411 - protruding part; 1412 - second groove; 142 - first shaft hole; 143 - accommodating groove; 1431 - first groove; 15 - driving motor; 151 - inner stator; 1511 - second shaft hole; 152 - outer rotor; 1521 - rotor shell; 1522 - magnetic ring; 1523 - second rotating shaft; 16a - first bearing; 16b - bearing seat; 17 - first elastic shaft sleeve; 171 - first protruding rib; 18 - second bearing; 19 - second elastic shaft sleeve; 191 - second protruding rib;

[0082] 20 - outdoor unit;

[0083] 30 - pipeline. DETAILED DESCRIPTION

[0084] ​​​​​​In order to make the purposes, technical solutions and advantages of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. That is, the specific embodiments described herein are only used to explain the present application, and are not intended to limit the present application.

[0085] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the embodiments described next, and is not intended to limit the embodiments of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0086] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0087] The terms "first", "second", and the like can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. For example, without departing from the scope of the present application, the first rotating shaft can be referred to as the second rotating shaft, and similarly, the second rotating shaft can be referred to as the first rotating shaft. Both the first rotating shaft and the second rotating shaft are rotating shafts, but they are not the same rotating shaft.

[0088] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0089] In the description of the application, it should be explained that the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0090] In the description of the application, it should be explained that the singular form "one", "a" and "said / that" can also include the plural form, unless the context clearly indicates otherwise. It should also be understood that the term "includes / contains" or "has" and the like specifies the existence of the stated features, integers, steps, operations, components, parts or combinations thereof, but does not exclude the possibility of the existence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.

[0091] In addition, the term "and / or" used in the specification includes any and all combinations of the related listed items, for example, A and / or B can mean: A exists alone, A and B exist together, B exists alone, that is, the term "and / or" used in the specification includes any and all combinations of the related listed items.

[0092] In the related art, the driving motor in the hanging air conditioner indoor unit can be set as an inner rotor motor or an outer rotor motor. The inner rotor motor includes an inner rotor and an outer stator arranged outside the inner rotor, and the inner rotor is connected with the heat exchange fan, so that the inner rotor rotates relative to the outer stator after the inner rotor motor is powered on, and in turn drives the heat exchange fan to rotate. The outer rotor motor includes an inner stator and an outer rotor arranged outside the inner stator, and the outer rotor is connected with the heat exchange fan, so that the outer rotor rotates relative to the inner stator after the inner stator motor is powered on, and in turn drives the heat exchange fan to rotate.

[0093] In order to reduce the friction between the stator and the rotor, a magnetic suspension motor appears on the market, that is, a motor in which the stator and the rotor are locked by suspension force. However, due to the complex structure and large size of the current magnetic suspension inner rotor motor, it is not conducive to the miniaturization design and cost optimization of the hanging air conditioner indoor unit, so the related art usually adopts a magnetic suspension outer rotor motor as the driving motor of the heat exchange fan.

[0094] Specifically, as Figure 1As shown, the indoor unit of the wall-mounted air conditioner is internally provided with a mounting seat 14, which is provided with a motor mounting groove 141, an inner stator 151 of a driving motor 15 is mounted in the motor mounting groove 141, and an outer rotor 152 of the driving motor 15 is at least partially located in the motor mounting groove 141, and the outer rotor 152 is connected with the heat exchange fan 13.

[0095] However, since the outer rotor and the inner stator are locked by the suspension force, which is relatively weak, when falling, the outer rotor will be out of the restraint of the inner rotor, causing the outer rotor and the heat exchange fan to easily move in the heat exchange air duct along the axial direction and the radial direction of the heat dissipation fan, and the amount of movement of the outer rotor and the heat exchange fan in the radial direction is mainly determined by the deformation amount of the mounting seat caused by the impact of the outer rotor and the heat exchange fan on the mounting seat. The greater the deformation amount of the mounting seat, the greater the radial displacement of the outer rotor and the heat exchange fan, and the more likely it is that the projection of the outer rotor in the length direction of the casing after movement will be partially located outside the motor mounting groove, i.e. the more likely it is that the projection of the outer rotor in the direction from right to left will be partially located outside the motor mounting groove, as shown. Figure 2 Thus, the outer rotor 152 is more likely to hit the mounting seat 14 when resetting after movement under the action of the magnetic force, which further easily damages the outer rotor 152 and causes the outer rotor 152 to fail to reset smoothly, affecting use.

[0096] To this end, the applicant has tried to reduce the deformation amount of the mounting seat by increasing the rigidity of the mounting seat, such as using a double-layer mounting base, to reduce the movement amount of the heat exchange fan in the radial direction, but such a mounting seat has a large volume, which is not conducive to the miniaturization design of the indoor unit of the wall-mounted air conditioner and the optimization of the cost.

[0097] Therefore, the embodiments of the present application provide a wall-mounted air conditioner which can realize the miniaturization design of the indoor unit while avoiding the outer rotor from hitting the mounting seat and being damaged when resetting after movement, and ensuring that the outer rotor can reset smoothly.

[0098] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in some embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0099] The embodiments of the present application disclose a wall-mounted air conditioner, which mainly performs a refrigeration cycle of the wall-mounted air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to air that has been adjusted and heat-exchanged.

[0100] The compressor compresses the refrigerant gas in a low-temperature and low-pressure state to discharge a refrigerant gas in a high-temperature and high-pressure state. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0101] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by exchanging heat with a material to be cooled using latent heat of evaporation of the refrigerant. Throughout the cycle, the ceiling-mounted air conditioner can adjust the temperature of the indoor space.

[0102] The ceiling-mounted air conditioner provided by the embodiments of the present application can have various implementation forms, such as Figure 3 as shown in the accompanying drawings, Figure 3 In one specific implementation of the ceiling-mounted air conditioner provided by the embodiments of the present application, the ceiling-mounted air conditioner 100 includes an indoor unit 10 and an outdoor unit 20, and the indoor unit 10 is connected to the outdoor unit 20 installed in an outdoor space through a pipe 30.

[0103] The outdoor unit 20 refers to a part of the refrigeration cycle including the compressor and the outdoor heat exchanger, and the indoor unit 10 refers to a part of the refrigeration cycle including the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit. The indoor heat exchanger and the outdoor heat exchanger are used as the condenser or the evaporator. When the indoor heat exchanger is used as the condenser, the ceiling-mounted air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger is used as the evaporator, the air conditioner functions as a cooler in a cooling mode.

[0104] Please refer to Figure 4 , Figure 4 An exemplary structural schematic diagram of the ceiling-mounted air conditioner provided by the embodiments of the present application. The indoor unit 10 provided by the embodiments of the present application can be a ceiling-mounted air conditioner mounted on a wall or other structure, and the indoor unit 10 includes a casing 11 that can form the overall appearance of the indoor unit 10.

[0105] Exemplarily, as Figure 4As shown, the shell 11 has a top and a bottom, the top of the shell 11 and the bottom of the shell 11 are opposite two ends, from the top of the shell 11 to the bottom of the shell 11 is the height direction of the shell 11; the shell 11 has a left side and a right side, the left side of the shell 11 and the right side of the shell 11 are opposite two sides, from the left side of the shell 11 to the right side of the shell 11 is the length direction of the shell 11; the shell 11 has a front side and a back side, the front side of the shell 11 and the back side of the shell 11 are opposite two sides, from the front side of the shell 11 to the back side of the shell 11 is the thickness direction of the shell 11; wherein, the shell 11 is arranged on the indoor top or the upper space of the indoor, the front side of the shell 11 is arranged towards the user, and the back side of the shell 11 is arranged towards the wall.

[0106] In some embodiments, Figure 4 and Figure 5 As shown, the indoor unit 10 provided by the embodiments of the present application further comprises a mounting seat 14, the mounting seat 14 is arranged in the shell 11, and a heat exchange air duct 111 is formed between the mounting seat 14 and the shell 11, which can be used to accommodate various functional devices of the ceiling-mounted air conditioner indoor unit 10, such as the indoor heat exchanger 12, the heat exchange fan 13, the mounting seat 14, the driving motor and the like mentioned later.

[0107] In some embodiments, the shell 11 further has an air inlet 112 and an air outlet 113 which are in communication with the heat exchange air duct 111, the air inlet 112 is located at the top of the shell 11, and the air outlet 113 is arranged on the front side of the shell 11 and close to the bottom of the shell 11, that is, the air outlet 113 is located on the lower front side of the shell 11.

[0108] Optionally, an air inlet grille 114 can be arranged at the air inlet 112 to prevent sundries from entering the interior of the shell 11; and an air deflector 115 can be arranged at the air outlet 113, which is connected to the shell 11 in a hinged manner to open or close the air outlet 113.

[0109] Please refer to Figure 5 The indoor unit 10 provided by the embodiments of the present application further comprises an indoor heat exchanger 12, which is arranged in the heat exchange air duct 111, and the indoor heat exchanger 12 is used to exchange heat with the indoor air entering the heat exchange air duct 111 through the air inlet 112 to form air conditioning air to meet the cooling or heating needs of the user. Wherein, the air conditioning air can be cold air, hot air or even normal temperature air.

[0110] Optionally, the indoor heat exchanger 12 is arranged close to the air inlet 112.

[0111] As Figure 5As shown, the indoor unit 10 provided by the embodiments of the present application further comprises a heat exchange fan 13, which is arranged in the heat exchange air duct 111 and located at the leeward side of the indoor heat exchanger 12. The heat exchange fan 13 is used to drive the indoor air to enter the heat exchange air duct 111 through the air inlet 112, and then the indoor air is heat exchanged by the indoor heat exchanger 12. The indoor air after heat exchange is discharged through the air outlet 113, i.e. the air after heat exchange flows to the indoor space from the air outlet 113, so as to realize the temperature regulation of the indoor space.

[0112] Optionally, the heat exchange fan 13 can be a cross-flow fan, and the heat exchange fan 13 is arranged close to the air outlet 113. The length direction of the casing 11 extends along the length direction of the casing 11, and the rotation axis of the heat exchange fan 13 is arranged along the length direction of the casing 11.

[0113] In combination Figures 6 to 10 As shown, the heat exchange fan 13 provided by the embodiments of the present application is provided with a first rotating shaft 13a extending along the length direction of the casing 11. The mounting seat 14 is provided with a motor mounting groove 141 and a first shaft hole 142 arranged oppositely along the length direction of the casing. The first rotating shaft 13a of the heat exchange fan 13 is arranged in the first shaft hole 142. When the heat exchange fan 13 operates, the first rotating shaft 13a rotates relative to the first shaft hole 142.

[0114] The indoor unit 10 provided by the embodiments of the present application further comprises a driving motor 15, which is arranged in the motor mounting groove 141 and connected with the heat exchange fan 13. The driving motor 15 can be used to drive the heat exchange fan 13 to rotate, so that the indoor air can enter the heat exchange air duct 111 through the air inlet 112 and be heat exchanged by the indoor heat exchanger 12. The air after heat exchange, such as cold air after temperature reduction or hot air after temperature increase, is blown to the indoor space through the air outlet 113, so as to change the air temperature of the indoor space, such as to reduce the air temperature of the indoor space or to increase the air temperature of the indoor space.

[0115] In some embodiments, the driving motor 15 comprises an inner stator 151 and an outer rotor 152. The inner stator 151 is arranged in the motor mounting groove 141, and the outer rotor 152 is arranged on the outer side of the inner stator 151 in the radial direction and can rotate relative to the inner stator 151. The outer rotor 152 is connected with the heat exchange fan 13, so as to realize the connection between the driving motor 15 and the heat exchange fan 13. When the inner stator 151 and the outer rotor 152 interact, the outer rotor 152 can rotate relative to the inner stator 151 and synchronously drive the heat exchange fan 13 to rotate, so that the indoor air can enter the heat exchange air duct 111 and be heat exchanged by the indoor heat exchanger 12 through the air inlet 112. The air after heat exchange is blown to the indoor space through the air outlet 113, so as to change the temperature of the indoor space.

[0116] In the present application, the driving motor 15 is a magnetic suspension motor, the outer rotor 152 and the inner stator 151 are locked by the suspension force, that is, the outer rotor 152 can be provided with axial and radial electromagnetic restraint by the suspension force, and the outer rotor 152 can rotate relative to the inner stator 151 while avoiding the outer rotor 152 from easily separating from the inner stator 151 in the axial direction, and the suspension force between the outer rotor 152 and the inner stator 151 needs to be overcome.

[0117] Since the outer rotor 152 and the inner stator 151 of the magnetic suspension motor are locked by the suspension force to complete positioning, the rotation accuracy is ensured, and the outer rotor 152 and the inner stator 151 can be positioned without contact. During the driving of the heat exchange fan 13 by the driving motor 15, the outer rotor 152 and the inner stator 151 rotate without contact, the vibration transmission between the heat exchange fan 13 and the inner stator 151 is isolated, and the noise and vibration generated by mechanical friction are greatly reduced, so that the whole machine of the indoor unit 10 is greatly reduced in noise and vibration, the generation of abnormal sound is avoided, and the user's use comfort is improved.

[0118] It can be understood that, since the outer rotor 152 and the inner stator 151 of the magnetic suspension motor are locked by the suspension force, when the indoor unit 10 falls, for example, when the indoor unit 10 accidentally falls due to carelessness during transportation, the suspension force between the outer rotor 152 and the inner stator 151 will be overcome. When the suspension force between the outer rotor 152 and the inner stator 151 is overcome, the outer rotor 152 and the heat exchange fan 13 will move away from the inner stator 151 or move away from the first shaft hole 142.

[0119] In the present application, only the outer rotor 152 can be located in the motor mounting groove 141, and the heat exchange fan 13 is located outside the motor mounting groove 141, that is, the heat exchange fan 13 does not exist in the motor mounting groove 141, or the outer rotor 152 can be located in the motor mounting groove 141, and part of the heat exchange fan 13 can be located in the motor mounting groove 141.

[0120] As shown in Figures 7 to 9 , in the length direction of the casing 11, the maximum distance of the heat exchange fan 13 moving away from the inner stator 151 is L1, that is, the maximum distance of the outer rotor 152 and the heat exchange fan 13 moving away from the inner stator 151 is L1.

[0121] As shown in Figures 7 to 9 , when the outer rotor 152 is located in the motor mounting groove 141 and the heat exchange fan 13 is located outside the motor mounting groove 141, in the length direction of the casing 11, the maximum depth of the outer rotor 152 inserted into the motor mounting groove 141 is L2, L2>L1.

[0122] And asFigure 7 , Figure 8 and Figure 10 As shown, when the outer rotor 152 is located in the motor mounting slot 141 and the heat exchange fan 13 is partially located in the motor mounting slot 141, the sum of the maximum depths of the outer rotor 152 and the heat exchange fan 13 inserted into the motor mounting slot 141 along the length of the housing 11 is L3. That is, the sum of the thickness of the outer rotor 152 and the maximum depth of the heat exchange fan 13 inserted into the motor mounting slot 141 along the length of the housing is L3, where L3 > L1.

[0123] When the above relationship is satisfied, when the indoor unit 10 falls, causing the outer rotor 152 and heat exchange fan 13 to move away from the inner stator 151, even when the outer rotor 152 and heat exchange fan 13 move away from the inner stator 151 to their maximum distance, the outer rotor 152 will still be partially located in the motor mounting slot 141. This prevents the outer rotor 152 from completely leaving the motor mounting slot 141 and being located outside the motor mounting slot 141. Furthermore, the outer rotor 152 may, for example, move radially along the heat exchange fan 13 under its own weight, resulting in a portion of the projection of the outer rotor 152 along the length of the casing 11 being located in the motor mounting slot. In the case of 141, the misalignment and non-correspondence between the outer rotor 152 and the motor mounting slot 141 in the length direction of the housing 11 are avoided. This prevents the outer rotor 152 from abutting or colliding with the mounting base 14 when the outer rotor 152 and the heat exchange fan 13 are reset under the action of magnetic force after erratic movement. This reduces the probability of damaging the outer rotor 152 and ensures that the outer rotor 152 and the heat exchange fan 13 can be reset smoothly. This ensures that the outer rotor 152 can cooperate smoothly with the inner stator 151 and drive the heat exchange fan 13 to rotate smoothly, thereby ensuring that the indoor unit 10 can operate smoothly and normally.

[0124] In the length direction of the housing 11, the maximum distance L1 that the outer rotor 152 and the heat exchange fan 13 move away from the inner stator 151 can be understood as the distance that the outer rotor 152 and the heat exchange fan 13 move away from the inner stator 151 from a state where they have not moved until the heat exchange fan 13 comes into contact with the mounting base 14 (such as the bottom surface of the receiving groove 143 mentioned later) and can no longer move along the original direction.

[0125] In some embodiments, such as Figure 8 and Figure 10As shown, the mounting seat 14 provided by the embodiment of the present application is further provided with a receiving groove 143, which is oppositely arranged with the motor mounting groove 141 along the length direction of the casing 11, wherein the first shaft hole 142 is arranged on the groove bottom surface of the receiving groove 143, and the heat exchange fan 13 is partially located in the receiving groove 143, and in the length direction of the casing 11, the maximum distance of the outer rotor 152 and the heat exchange fan 13 moving away from the first shaft hole 142 is L4, and the depth of the heat exchange fan 13 inserted into the receiving groove 143 is L5, L5>L4.

[0126] When the above relationship is satisfied, when the indoor unit falls and causes the outer rotor 152 and the heat exchange fan 13 to move away from the first shaft hole 142, even when the outer rotor 152 and the heat exchange fan 13 move away from the first shaft hole 142 to the maximum distance, the heat exchange fan 13 is still partially located in the receiving groove 143, avoiding the heat exchange fan 13 completely separating from the receiving groove 143 and being located outside the receiving groove 143, and the situation that the heat exchange fan 13, for example, under the action of its own gravity, moves along its radial direction, causing the projection of the heat exchange fan 13 in the length direction of the casing 11 to be partially located outside the receiving groove 143, that is, avoiding the situation that the heat exchange fan 13 is dislocated with the receiving groove 143 in the length direction of the casing 11 and cannot correspond, thereby avoiding the situation that the heat exchange fan 13 abuts and hits the mounting seat 14 when the outer rotor 152 and the heat exchange fan 13 are reset after moving and under the action of magnetic force, so as to reduce the probability of damaging the heat exchange fan 13, and to ensure that the outer rotor 152 and the heat exchange fan 13 can be smoothly reset, thereby ensuring that the outer rotor 152 can smoothly cooperate with the inner rotor 151 to smoothly drive the heat exchange fan 13 to rotate, and further ensuring that the indoor unit 10 can smoothly and normally operate.

[0127] Wherein, in the length direction of the casing 11, the maximum distance of the outer rotor 152 and the heat exchange fan 13 moving away from the first shaft hole 142 is L4, which can be understood as: when the outer rotor 152 and the heat exchange fan 13 move away from the first shaft hole 142 to the state that the heat exchange fan 13 abuts with the mounting seat 14 (for example, the protruding portion 1411 in the motor mounting groove 141) and cannot continue to move along the original direction, the distance moved in the length direction of the casing 11.

[0128] In the present application, the heat exchange fan 13 can include a first end cover 131 connected with the outer rotor 152, a second end cover 132 spaced apart from the first end cover 131 along the length direction of the casing, a first rotating shaft 13a arranged at the side of the second end cover 132 away from the first end cover 131, and a fan blade 133 connected between the first end cover 131 and the second end cover 132, that is, the first end cover 131 and the second end cover 132 are arranged at the two ends of the fan blade 133 respectively. The outer rotor 152 is fixedly connected with the first end cover 131, and the outer rotor 152 drives the fan blade 133 to rotate through the first end cover 131 to drive the airflow in the heat exchange air duct 111 to flow.

[0129] In some embodiments, the outer rotor 152 includes a rotor shell 1521 and a magnetic ring 1522. The rotor shell 1521 is sleeved on the outer side in the radial direction of the inner stator 151, and the magnetic ring 1522 is arranged in the rotor shell 1521 and is nested on the outer side in the radial direction of the inner stator 151. The magnetic ring 1522 is mainly used to jointly act with the winding of the inner stator 151 to generate a suspension force, so as to provide the outer rotor 152 with electromagnetic restraint in the axial and radial directions through the suspension force. The outer rotor 152 and the inner stator 151 can be locked without contact in the radial direction while the outer rotor 152 rotates relative to the inner stator 151. Thus, the vibration transmission between the heat exchange fan 13 and the inner stator 151 can be isolated, and the noise and vibration generated by mechanical friction are greatly reduced, so that the overall noise and vibration of the indoor unit 10 are greatly reduced, the generation of abnormal sound is avoided, and the user's use comfort is improved.

[0130] In this way, since the material of the rotor shell 1521 is usually plastic and the cost is usually relatively low, compared with the structure that the rotor shell 1521 and the magnetic ring 1522 are integrated and the material of the entire outer rotor 152 is a magnetic material, the outer rotor 152 in the present application adopts the structure that the rotor shell 1521 and the magnetic ring 1522 are separately arranged. Thus, the material of the rotor shell 1521 can be different from that of the magnetic ring 1522, for example, plastic with a relatively low cost is adopted, so as to be conducive to reducing the cost of the outer rotor 152.

[0131] Optionally, the rotor shell 1521 is integrally formed with the first end cover 131. For example, the outer rotor 152 can be injection molded to be connected to the first end cover 131 of the heat exchange fan 13. Thus, the rotor shell 1521 and the first end cover 131 can share one component, the number of parts is reduced, and the cost is saved. Meanwhile, the distance between the driving motor 15 and the heat exchange fan 13 can be reduced, the space of the main body after the driving motor 15 and the heat exchange fan 13 are connected in the length direction of the casing 11 is saved, and then the appearance size of the indoor unit 10 is favorably reduced, and the effect of being small and beautiful is achieved.

[0132] In some embodiments, asFigure 8 As shown, the indoor unit further comprises a first bearing 16a arranged between the first rotating shaft 13a and the first shaft hole 142. In this way, the first rotating shaft 13a can be supported by the first bearing 16a, the friction coefficient of the first rotating shaft 13a during rotation relative to the first shaft hole 142 is reduced, and the rotation accuracy is ensured, thereby facilitating the rotation stability of the heat exchange fan 13 and reducing the generation of noise.

[0133] Optionally, the indoor unit further comprises a bearing seat 16b arranged between the first bearing 16a and the first shaft hole 142, so that the first bearing 16a is installed and fixed in the first shaft hole 142 through the bearing seat 16b.

[0134] In some embodiments, the indoor unit 10 further comprises a first elastic shaft sleeve 17, such as a plastic sleeve, a silica gel sleeve, or a rubber sleeve, which is arranged between the first bearing 16a and the first shaft hole 142.

[0135] In this way, not only can the elastic force of the first elastic shaft sleeve 17 ensure that the first bearing 16a is always attached to the hole wall surface of the first shaft hole 142, that is, the inner surface of the bearing seat 16b, thereby effectively preventing the radial runout of the first bearing 16a, but also the elastic deformation capacity of the first elastic shaft sleeve 17 can absorb part of the impact energy, thereby achieving the purposes of vibration reduction and noise reduction.

[0136] In some embodiments, as shown in Figs. 1 and 2, Figure 8 and Figure 10 As shown, the inner stator 151 is provided with a second shaft hole 1511 extending along the axial direction of the first rotating shaft 13a, and the inside of the outer rotor 152 is provided with a second rotating shaft 1523, specifically, the inside of the rotor shell 1521 of the outer rotor 152 is provided with the second rotating shaft 1523, the second rotating shaft 1523 passes through the hollow part of the magnetic ring 1522 and the second shaft hole 1511, and the second rotating shaft 1523 can rotate together with the rotor shell 1521, so that the second rotating shaft 1523 can rotate relative to the second shaft hole 1511.

[0137] By arranging the second rotating shaft 1523 in the inside of the rotor shell 1521 and making the second rotating shaft 1523 pass through the hollow part of the magnetic ring 1522 and be inserted into the second shaft hole 1511 of the inner stator 151, the outer rotor 152 can be supported by the inner stator 151 in the radial direction, so that the outer rotor 152 has sufficient radial support, the rotation stability of the outer rotor 152 is improved, and the generation of noise is reduced.

[0138] In some embodiments, the indoor unit further comprises a second bearing 18 arranged between the second rotating shaft 1523 and the second shaft hole 1511. In this arrangement, the second bearing 18 can be used to support the second rotating shaft 1523, reduce the friction coefficient of the second rotating shaft 1523 during rotation relative to the second shaft hole 1511, and ensure the rotation accuracy, thereby improving the rotation stability of the outer rotor 152 and reducing noise.

[0139] In some embodiments, the indoor unit further comprises a second elastic shaft sleeve 19, such as a plastic sleeve, a silica gel sleeve, or a rubber sleeve, arranged between the second bearing 18 and the second shaft hole 1511.

[0140] In this arrangement, not only can the elastic force of the second elastic shaft sleeve 19 ensure that the second bearing 18 always adheres to the hole wall surface of the second shaft hole 1511, effectively preventing radial runout of the second bearing 18, but also the elastic deformation capability of the second elastic shaft sleeve 19 can absorb part of the impact energy to achieve the purpose of vibration reduction and noise reduction.

[0141] When the indoor unit is in cooling operation, cold air passes through the fan blade 133 and is blown out of the air outlet towards the indoor. At this time, the side of the second end cover 132 facing the fan blade 133 has cold air, while the other side of the second end cover 132 facing away from the fan blade 133 has no cold air, resulting in condensation on the other side of the second end cover 132 facing away from the fan blade 133, forming water mist or even larger water droplets, which can adhere to the second end cover 132 or drip down, causing the second end cover 132 to appear condensation, which not only affects the user experience, but also easily causes user complaints.

[0142] To this end, in some embodiments, as shown in Figure 8 and Figure 11 the second end cover 132 is located in the accommodation groove 143, and the groove side wall of the accommodation groove 143 is provided with a first groove 1431 located below the second end cover 132, so that the first groove 1431 can be used to collect condensed water dripping from the second end cover 132, that is, the condensed water on the second end cover 132 can drip into the first groove 1431 and be collected in the first groove 1431, so as to avoid the condensed water on the second end cover 132 from directly dripping to the ground, improving the user experience.

[0143] Optionally, the first groove 1431 can be a plurality of first grooves 1431 arranged along the length direction of the cabinet 11. The arrangement of the plurality of first grooves 1431 can not only ensure the structural strength of the mounting seat 14, but also increase the volume of the first groove 1431 to avoid the condensed water in the first groove 1431 from overflowing and flowing to the ground, further improving the user experience.

[0144] In some embodiments, the outer peripheral side of the second end cover 132 protrudes outward from the outer peripheral side of the fan blade 133 in the radial direction of the heat exchange fan 13. This ensures that when the indoor unit 10 falls, the second end cover 132 contacts the side wall of the receiving groove 143 first, rather than the fan blade 133, thereby protecting the fan blade 133 and preventing damage to the fan blade 133.

[0145] Furthermore, such as Figure 11 As shown, along the length of the housing 11, the thickness of the second end cover 132 is H1, and the width of the first groove 1431 is w1, where w1 < H1.

[0146] It is understandable that when there are multiple first grooves 1431 and the widths of the first grooves 1431 are not the same, w1 is the maximum value among the widths of the multiple first grooves 1431.

[0147] When the above relationship is satisfied, even if the outdoor unit falls and causes the outer rotor 152 and heat exchange fan 13 to move away from the inner stator 151, even if the outer rotor 152 and heat exchange fan 13 move away from the inner stator 151 to the maximum distance, the second end cover 132 can be prevented from falling completely into the first groove 1431, causing the fan blade 133 to contact the groove side wall of the receiving groove 143. This ensures that when the heat exchange fan 13 moves away from the inner stator 151 to the maximum distance, the second end cover 132 will contact the groove side wall of the receiving groove 143 first, rather than the fan blade 133. This protects the fan blade 133 and prevents damage to the fan blade 133.

[0148] When the indoor unit is in cooling mode, cold air passes through the fan blades 133 and blows into the room through the air outlet. At this time, there is cold air on the side of the first end cover 131 facing away from the fan blades 133, but no cold air on the other side of the first end cover 131 facing the fan blades 133. This causes condensation to form on the other side of the first end cover 131 facing away from the fan blades 133, forming water mist or even condensing into larger water droplets that adhere to the first end cover 131 or drip off. This condensation phenomenon on the first end cover 131 not only affects the user experience but also easily leads to user complaints.

[0149] In some embodiments, such as Figure 10 and Figure 12 As shown, the first end cap 131 is located in the motor mounting groove 141, and the side wall of the motor mounting groove 141 is provided with a second groove 1412. The second groove 1412 is located below the first end cap 131 so that the second groove 1412 can be used to collect the condensate dripping from the first end cap 131. That is, the condensate on the first end cap 131 can drip into the second groove 1412 and be collected in the second groove 1412, so as to prevent the condensate on the first end cap 131 from dripping directly onto the ground and improve the user experience.

[0150] Optionally, the second groove 1412 can be multiple, and the multiple second grooves 1412 are arranged along the length direction of the shell 11. The arrangement of the multiple second grooves 1412 can ensure the structural strength of the mounting seat 14, increase the volume of the second groove 1412, avoid the condensed water in the second groove 1412 from overflowing to the ground, and further improve the user experience.

[0151] In some embodiments, as shown in Figure 12 In the radial direction of the heat exchange fan 13, the outer circumferential side of the first end cover 131 protrudes outwardly from the outer circumferential side of the fan blade 133; wherein in the length direction of the shell 11, the thickness of the first end cover 131 is H2, and the width of the second groove 1412 is w2, w2

[0152] It can be understood that when the second groove 1412 is multiple and the widths of the second grooves 1412 are different, w1 is the maximum value among the widths of the multiple second grooves 1412.

[0153] When the above relationship is satisfied, in the case that the indoor unit 10 falls and the outer rotor 152 and the heat exchange fan 13 move in the direction away from the first shaft hole 142, even in the case that the outer rotor 152 and the heat exchange fan 13 move in the direction away from the first shaft hole 142 to the maximum distance, the first end cover 131 can be prevented from falling completely into the second groove 1412 to cause the fan blade 133 to contact the groove side wall of the accommodation groove 143, so that when the heat exchange fan 13 moves in the direction away from the first shaft hole 142 to the maximum displacement, the first end cover 131 contacts the groove side wall of the motor mounting groove 141 first, rather than the fan blade 133, thereby protecting the fan blade 133 and avoiding damage to the fan blade 133.

[0154] In some embodiments, as shown in Figure 8 and Figure 13 As shown in

[0155] Since the first protruding rib 171 is usually an elongated structure and is prone to deformation, when the first elastic shaft sleeve 17 is assembled into the first shaft hole 142, the first protruding rib 171 will be deformed by the extrusion of the hole wall surface of the first shaft hole 142. It can be understood that when the bearing seat 16b exists, the first protruding rib 171 will be deformed by the extrusion of the inner surface of the bearing seat 16b, so that the first elastic shaft sleeve 17 is fixed in the first shaft hole 142 with interference, which can effectively prevent the radial jump of the first bearing 16a, ensure that the first rotating shaft 13a can rotate smoothly relative to the first bearing 16a, and further facilitate to improve the rotation stability of the heat exchange fan 13 and reduce the generation of noise.

[0156] In addition, the plurality of first protruding ribs 171 can strengthen the structural strength of the first elastic shaft sleeve 17, so as to avoid excessive deformation of the first elastic shaft sleeve 17, thereby reducing the radial displacement of the heat exchange fan 13, and making the heat exchange fan 13 more stable in the mounting seat 14, and protecting the fan blade 133.

[0157] In some embodiments, as shown in Figure 10 and Figure 14 The outer circumferential surface of the second elastic shaft sleeve 19 is provided with a plurality of second protruding ribs 191, and the plurality of second protruding ribs 191 are arranged in a spaced manner along the circumferential direction of the second elastic shaft sleeve 19.

[0158] Since the second protruding rib 191 is usually an elongated structure, it is easy to deform. When the second elastic shaft sleeve 19 is assembled into the second shaft hole 1511, the second protruding rib 191 will be deformed due to the extrusion of the hole wall surface of the second shaft hole 1511, so as to facilitate the interference fit of the second elastic shaft sleeve 19 in the second shaft hole 1511, effectively prevent the radial runout of the second bearing 18, and ensure that the second rotating shaft 1523 can rotate smoothly relative to the second bearing 18, thereby facilitating the rotation stability of the heat exchange fan 13 and reducing the generation of noise.

[0159] In addition, the plurality of second protruding ribs 191 can strengthen the structural strength of the second elastic shaft sleeve 19, so as to avoid excessive deformation of the second elastic shaft sleeve 19, thereby reducing the radial displacement of the heat exchange fan 13, and making the heat exchange fan 13 more stable in the mounting seat 14, and protecting the fan blade 133.

[0160] In some embodiments, the first elastic shaft sleeve 17 and the second elastic shaft sleeve 19 have the same structure and size. By designing the first elastic shaft sleeve 17 and the second elastic shaft sleeve 19 to be completely consistent in structure and size, the displacement of the elastic shaft sleeves on both sides of the heat exchange fan 13 can be consistent when the heat exchange fan 13 has a radial displacement, so as to reduce the probability of the fan blade 133 hitting the mounting seat 14, thereby facilitating the reduction of the probability of damage to the fan blade 133.

[0161] Alternatively, the first elastic shaft sleeve 17 and the second elastic shaft sleeve 19 can be designed as solid, that is, there is no hollow part in the first elastic shaft sleeve 17 and the second elastic shaft sleeve 19 except for the hollow part for arranging the bearing, further reducing the deformation of the first elastic shaft sleeve 17 and the second elastic shaft sleeve 19 when falling, so as to further reduce the radial displacement of the heat exchange fan 13, and protect the fan blade 133.

[0162] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, as long as the combinations do not conflict with each other, they should be construed to be within the scope of the present disclosure.

[0163] In addition, the above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the content of the present description should not be understood as a limitation on the present application, and the protection scope of the present application should be subject to the appended claims.

Claims

1. A wall-mounted air conditioner characterized by comprising: The hanging air conditioner comprises: an indoor unit; The indoor unit comprises: a casing having an air inlet and an air outlet; a mounting seat arranged in the casing and forming a heat exchange air channel with the casing, the heat exchange air channel being in communication with the air inlet and the air outlet respectively, the mounting seat being provided with a motor mounting groove and a first shaft hole arranged oppositely along the length direction of the casing; an indoor heat exchanger arranged in the heat exchange air channel; a heat exchange fan arranged in the heat exchange air channel and located at the leeward side of the indoor heat exchanger, the heat exchange fan being used to drive indoor air to enter the heat exchange air channel through the air inlet, and the indoor air is heat exchanged by the indoor heat exchanger, and the heat exchanged indoor air is discharged through the air outlet, the heat exchange fan being provided with a first rotating shaft, and the first rotating shaft is arranged in the first shaft hole; and a driving motor arranged in the motor mounting groove and connected with the heat exchange fan, the driving motor being used to drive the heat exchange fan to rotate, the driving motor comprising: an inner stator arranged in the motor mounting groove; and an outer rotor arranged on the outer side of the inner stator in the radial direction and being rotatable relative to the inner stator, the outer rotor being connected with the heat exchange fan; in the length direction of the casing, the maximum distance of the heat exchange fan moving away from the inner stator is L1, the maximum depth of the outer rotor inserted into the motor mounting groove is L2, L2>L1, or in the length direction of the casing, the sum of the maximum depths of the outer rotor and the heat exchange fan inserted into the motor mounting groove is L3, L3>L1.

2. The wall-mounted air conditioner according to claim 1, characterized by The mounting seat is further provided with a receiving groove arranged oppositely with the motor mounting groove along the length direction of the casing, wherein the first shaft hole is arranged on the groove bottom surface of the receiving groove, and the heat exchange fan is partially located in the receiving groove; in the length direction of the casing, the maximum distance of the outer rotor and the heat exchange fan moving away from the first shaft hole is L4, the depth of the heat exchange fan inserted into the receiving groove is L5, L5>L4.

3. The wall-mounted air conditioner according to claim 1, wherein The heat exchange fan comprises: a first end cover connected with the outer rotor; a second end cover arranged at intervals with the first end cover along the length direction of the casing, and the first rotating shaft is arranged on the side of the second end cover away from the first end cover; and a fan blade connected between the first end cover and the second end cover; The mounting seat is further provided with a receiving groove arranged oppositely with the motor mounting groove along the length direction of the casing, wherein the first shaft hole is arranged on the groove bottom surface of the receiving groove, and the second end cover is located in the receiving groove; wherein the groove side wall of the receiving groove is provided with a first groove, the first groove being located below the second end cover, and the first groove is used to collect condensed water dripping from the second end cover.

4. The wall-mounted air conditioner according to claim 3, characterized in that, In the radial direction of the heat exchange fan, the outer circumferential side of the second end cover protrudes outwardly from the outer circumferential side of the fan blade; In the length direction of the casing, the thickness of the second end cover is H1, and the width of the first groove is w1, w1 < H1.

5. The ceiling-suspended type air conditioner according to claim 1, wherein The heat exchange fan comprises: A first end cover connected with the outer rotor and located in the motor mounting groove; A second end cover spaced apart from the first end cover in the length direction of the casing, and the first rotating shaft is arranged on the side of the second end cover away from the first end cover; and A fan blade connected between the first end cover and the second end cover; The groove side wall of the motor mounting groove is provided with a second groove below the first end cover, and the second groove is used for collecting condensed water dripping from the first end cover.

6. The wall-mounted air conditioner according to claim 5, characterized in that, In the radial direction of the heat exchange fan, the outer circumferential side of the first end cover protrudes outwardly from the outer circumferential side of the fan blade; In the length direction of the casing, the thickness of the first end cover is H2, and the width of the second groove is w2, w2 < H2.

7. The wall-mounted air conditioner according to claim 1, wherein The indoor unit further comprises: A first bearing arranged between the first rotating shaft and the first shaft hole; and A first elastic shaft sleeve arranged between the first bearing and the first shaft hole, and the outer circumferential surface of the first elastic shaft sleeve is provided with a plurality of first protruding ribs arranged in the circumferential direction of the first elastic shaft sleeve.

8. The wall-mounted air conditioner according to claim 1, wherein The inner stator is provided with a second shaft hole with an axis extending in the axial direction of the first rotating shaft, and the inner portion of the outer rotor is provided with a second rotating shaft, and the second rotating shaft is arranged in the second shaft hole.

9. The wall-mounted air conditioner according to claim 8, characterized in that, The indoor unit further comprises: A second bearing arranged between the second rotating shaft and the second shaft hole; and A second elastic shaft sleeve arranged between the second bearing and the second shaft hole, and the outer circumferential surface of the second elastic shaft sleeve is provided with a plurality of second protruding ribs arranged in the circumferential direction of the second elastic shaft sleeve.

10. The ceiling-suspended type air conditioner according to claim 1, wherein The heat exchange fan comprises: A first end cover connected with the outer rotor; A second end cover spaced apart from the first end cover in the length direction of the casing, and the first rotating shaft is arranged on the side of the second end cover away from the first end cover; and A fan blade connected between the first end cover and the second end cover; The outer rotor comprises: A rotor shell sleeved on the outer side in the radial direction of the inner stator, and the rotor shell is integrally formed with the first end cover; and A magnetic ring arranged in the rotor shell and nested on the outer side in the radial direction of the inner stator.

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