Fan and air conditioner

Abstract

The utility model discloses a fan and an air conditioner, and relates to the technical field of air conditioners. The motor comprises a rotor assembly and a stator assembly, the stator assembly comprises a stator and a supporting shaft, a containing cavity is formed in the stator, the supporting shaft penetrates through the containing cavity and is fixed to the stator, the rotor assembly is arranged in the containing cavity and sleeves the supporting shaft, and the rotor assembly comprises a rotor and a bearing embedded in the rotor. The rotor is rotatably supported on the support shaft through a bearing. And the wind wheel is arranged at one axial end of the rotor and is in driving connection with the rotor. According to the fan, the bearing is embedded in the rotor, so that the axial size of the motor can be reduced. And the wind wheel is directly connected with the rotor of the motor, so that an axial gap between the rotor and the wind wheel can be reduced, and the axial size of the whole fan is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and particularly to a fan and an air conditioner. Background Art

[0002] In the related art of air conditioners, air flow is caused by a fan. After the air flow exchanges heat with a heat exchanger, it is sent into a room to achieve the effect of adjusting the indoor temperature. Among them, the fan is mainly composed of a combination of a motor and a fan blade. The rotor of the motor is connected to the fan blade through a rotating shaft, and the fan blade is driven to rotate through the rotating shaft. Such a fan has problems such as a relatively long axial dimension and a large volume, occupying a large space in the air conditioner. Summary of the Utility Model

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. For this reason, the present application proposes a fan, and the fan can reduce the dimension along its axis and reduce the space occupied in the air conditioner.

[0004] The present application also proposes an air conditioner having the above-mentioned fan.

[0005] The fan according to an embodiment of the present application includes: a motor, the motor includes a rotor assembly and a stator assembly, the stator assembly includes a stator and a support shaft, a receiving cavity is formed in the stator, the support shaft passes through the receiving cavity and is fixed to the stator, the rotor assembly is disposed in the receiving cavity and sleeved outside the support shaft, the rotor assembly includes a rotor and a bearing embedded in the rotor, and the rotor is rotatably supported on the support shaft through the bearing; a wind wheel, the wind wheel is disposed at an axial end of the rotor, and the wind wheel is drivingly connected to the rotor.

[0006] According to the fan of the embodiment of the present application, by embedding the bearing in the rotor, the axial dimension of the motor can be reduced. And the wind wheel is directly connected to the rotor of the motor, which can reduce the axial gap between the rotor and the wind wheel, that is, reduce the axial gap between the motor and the wind wheel, so as to reduce the axial dimension of the entire fan, which is beneficial to the miniaturization of the fan and can reduce the space occupied in the air conditioner.

[0007] In some embodiments, one end face of the wind wheel facing the motor is attached to one end face of the rotor facing the wind wheel.

[0008] In some embodiments, the wind wheel forms a receiving groove recessed in a direction away from the motor, and at least a part of the motor is embedded in the receiving groove.

[0009] Further, at least a part of the stator is embedded in the receiving groove and is in clearance fit with the peripheral wall surface of the receiving groove.

[0010] In some embodiments, one side of the rotor facing the wind wheel has a driving portion, the driving portion is eccentrically arranged relative to the support shaft, and the rotor is fixedly connected to the wind wheel through the driving portion.

[0011] Further, there are a plurality of the driving portions which are spaced apart and surround the support shaft.

[0012] In some embodiments, the driving portion is formed as a connecting hole, and the rotor is fixedly connected to the wind wheel through a fastener passing through the wind wheel and the connecting hole; or, the driving portion is formed as a hot melt column, and the wind wheel has a mounting hole corresponding to the hot melt column, the hot melt column passes through the mounting hole, and the rotor is fixedly connected to the wind wheel through the hot melting of the hot melt column.

[0013] In some embodiments, one side of the rotor facing the wind wheel has a first positioning structure, the first positioning structure is eccentrically arranged relative to the support shaft, one side of the wind wheel facing the rotor has a second positioning structure, and the first positioning structure and the second positioning structure are inserted and matched along the axial direction of the support shaft.

[0014] Further, there are a plurality of the first positioning structures which are spaced apart and surround the support shaft.

[0015] In some embodiments, one of the first positioning structure and the second positioning structure is a groove, and the other is a protrusion.

[0016] Further, the rotor is formed with a shaft hole passing through the support shaft, the rotor includes a plurality of rib plates arranged at intervals around the shaft hole, the rib plates extend along the radial direction of the shaft hole, and a groove is formed between two adjacent rib plates.

[0017] Further, a driving portion is formed at one end of the rib plate away from the shaft hole in the radial direction of the shaft hole, the rotor is fixedly connected to the wind wheel through the driving portion, and an avoidance recess for avoiding the driving portion is formed on the protrusion.

[0018] In some embodiments, the stator is formed in the form of a housing that is open in the direction facing the wind wheel, so as to include an annular portion and an end portion, the end portion is connected to the side of the annular portion away from the wind wheel, one end of the support shaft away from the wind wheel is fixed to the end portion, one end of the support shaft close to the wind wheel is suspended, and bearings are sleeved on both axial ends of the support shaft respectively.

[0019] In some embodiments, the rotor includes a plurality of split rotor cores and a plurality of magnets, and the stator includes a stator core and a stator winding; and / or, the wind wheel is an axial flow wind wheel to include a hub and blades arranged on the periphery of the hub, and the hub is drivingly connected to the rotor.

[0020] The air conditioner according to the embodiment of the present application includes the blower described in the above embodiment.

[0021] The air conditioner according to the embodiment of the present application, by adopting the blower of the above embodiment, can reduce the axial dimension of the motor by embedding the bearing in the rotor. And the impeller is directly connected to the rotor of the motor, which can reduce the axial gap between the rotor and the impeller, that is, reduce the axial gap between the motor and the impeller, thereby reducing the axial dimension of the entire blower, facilitating the miniaturization of the blower, and thus facilitating the layout of the blower in the air conditioner or reducing the volume of the air conditioner.

[0022] Some of the additional aspects and advantages of the present application will be given in the following description, some will become apparent from the following description, or be understood through the practice of the present application. Description of the Drawings

[0023] Figure 1 is a sectional view of a blower according to an embodiment of the present application;

[0024] Figure 2 is Figure 1 an enlarged view of the blower shown in

[0025] Figure 3 is Figure 1 a front projection schematic diagram of the blower shown in

[0026] Figure 4 is a sectional view of a stator assembly according to an embodiment of the present application;

[0027] Figure 5 is a sectional view of a rotor assembly according to an embodiment of the present application;

[0028] Figure 6 is a schematic structural diagram of a rotor assembly according to an embodiment of the present application;

[0029] Figure 7 is a schematic structural diagram of a rotor assembly according to another embodiment of the present application;

[0030] Figure 8 is an exploded schematic diagram of a blower according to an embodiment of the present application;

[0031] Figure 9 is a schematic structural diagram of an impeller according to an embodiment of the present application;

[0032] Figure 10 is Figure 9 an enlarged view of the impeller shown in

[0033] Figure 11It is a front projection schematic diagram of an electric motor according to an embodiment of the present application.

[0034] Reference numerals:

[0035] Fan 1000,

[0036] Electric motor 100,

[0037] Rotor assembly 10, rotor 11, drive part 111, first positioning structure 112, shaft hole 113, rib plate 114, split rotor core 115, magnet 116, extension plate 117, baffle 118, polymer assembly 119, bearing 12,

[0038] Stator assembly 20, accommodation cavity 21, stator 22, ring part 221, end part 222, stator core 223, stator winding 224, sealing groove 225, support shaft 23,

[0039] Wind wheel 200, accommodation groove 210, second positioning structure 220, avoidance recess 230, hub 240, blade 250. Detailed implementation manners

[0040] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0041] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0042] The fan 1000 and the air conditioner according to an embodiment of the application will be described below with reference to the drawings.

[0043] As Figures 1-4 shown, the fan 1000 according to an embodiment of the present application includes: an electric motor 100 and a wind wheel 200.

[0044] The motor 100 includes a rotor assembly 10 and a stator assembly 20. The stator assembly 20 includes a stator 22 and a support shaft 23. An accommodation cavity 21 is formed in the stator 22. The support shaft 23 passes through the accommodation cavity 21 and is fixed to the stator 22. The rotor assembly 10 is disposed in the accommodation cavity 21 and sleeved outside the support shaft 23. The rotor assembly 10 includes a rotor 11 and a bearing 12 embedded in the rotor 11. The rotor 11 is rotatably supported on the support shaft 23 through the bearing 12. A wind wheel 200 is disposed at one axial end of the rotor 11, and the wind wheel 200 is drivingly connected to the rotor 11.

[0045] It can be understood that the support shaft 23 is fixed to the stator 22. The support shaft 23 can define the position of the rotor assembly 10 in the accommodation cavity 21. At the same time, the support shaft 23 can define the rotation axis of the rotor assembly 10, so that the rotor assembly 10 can rotate in the accommodation cavity 21 with a fixed rotation axis. The wind wheel 200 is connected to the rotor 11, so that the wind wheel 200 can rotate coaxially with the rotor 11, thereby realizing the driving of the wind wheel 200 to rotate by the motor 100.

[0046] It should be noted that for the convenience of description, the extending direction of the rotation axis of the rotor assembly 10 is taken as the axial direction. The wind wheel 200 rotates coaxially with the rotor assembly 10, that is, the axial direction is the axis direction of the rotor assembly 10 and the wind wheel 200.

[0047] Thus, by embedding the bearing 12 in the rotor 11, the axial dimension of the motor 100 can be reduced. The wind wheel 200 is directly connected to the rotor 11 of the motor 100, which can reduce the axial clearance between the rotor 11 and the wind wheel 200, that is, reduce the axial clearance between the motor 100 and the wind wheel 200, thereby reducing the axial dimension of the entire fan 1000 and being beneficial to the miniaturization of the fan 1000.

[0048] In this application, the fixing method of the support shaft 23 to the stator 22 is not limited. For example, the support shaft 23 is integrally formed with the stator 22 by injection molding. Another example is that the support shaft 23 is connected to the stator 22 by welding.

[0049] In some embodiments, retaining rings are arranged on both axial sides of the bearing 12. The retaining rings are clamped between the bearing 12 and the rotor 11, which can reduce or avoid the axial movement of the bearing 12 when it is embedded in the rotor 11, and improve the stability of the rotor 11 being rotatably supported on the support shaft 23 through the bearing 12 and rotating.

[0050] In some embodiments, as Figure 1 、 Figure 2 shown, the end face of the wind wheel 200 facing the motor 100 is attached to the end face of the rotor 11 facing the wind wheel 200.

[0051] Therefore, the rotor 11 can stop against the wind wheel 200 at different positions outside the rotation axis, thereby reducing or avoiding the shaking of the wind wheel 200 along the axis relative to the rotor 11 and improving the stability of the rotor 11 driving the wind wheel 200 to rotate.

[0052] At the same time, the relative position of the rotor 11 and the wind wheel 200 along the axial direction can be limited, reducing or avoiding the axial movement of the wind wheel 200 relative to the rotor 11, improving the stability of the connection between the rotor 11 and the wind wheel 200, and improving the stability of the motor 100 driving the wind wheel 200 to rotate. In addition, it is easy to locate the relative position of the rotor 11 and the wind wheel 200 along the axial direction, simplifying the connection operation between the wind wheel 200 and the rotor 11.

[0053] In some embodiments, Figure 1 , Figure 2 As shown, the wind wheel 200 is formed with a receiving groove 210 that is recessed in a direction away from the motor 100 , and at least a portion of the motor 100 is embedded in the receiving groove 210 .

[0054] It can be understood that the receiving groove 210 is recessed in a direction away from the motor 100 , that is, the receiving groove 210 is recessed in the axial direction away from the motor 100 .

[0055] Thus, the motor 100 can be partially embedded in the receiving groove 210 along the axial direction, which can reduce the overall axial size of the fan 1000. At the same time, the receiving groove 210 can limit the connection position of the motor 100 to the wind wheel 200, simplify the connection operation between the wind wheel 200 and the motor 100, reduce or avoid installation errors between the motor 100 and the wind wheel 200, and play a fool-proof role.

[0056] Furthermore, at least part of the stator 22 is embedded in the receiving groove 210, so that the receiving groove 210 can guide the connection position of the motor 100 on the wind wheel 200, which is convenient for the connection operation between the motor 100 and the wind wheel 200. The stator 22 is matched with the clearance of the peripheral wall surface of the receiving groove 210. It can be understood that the wind wheel 200 rotates synchronously with the rotor 11, and the rotor 11 rotates relative to the stator 22, that is, the wind wheel 200 rotates relative to the stator 22.

[0057] Therefore, there is a gap between the stator 22 and the wind wheel 200, which can reduce or avoid the stator 22 from blocking the rotation of the wind wheel 200, and maintain the stability of the wind wheel 200 relative to the stator 22. In addition, when the rotor 11 is separated from the wind wheel 200, the stator 22 can limit the direction of the wind wheel 200 to escape from the motor 100, so that the wind wheel 200 can be separated from the motor 100 in the axial direction, that is, the direction of the wind wheel 200 escaping from the motor 100 is controllable, thereby improving safety.

[0058] In some embodiments, Figures 6-8As shown, the side of the rotor 11 facing the wind wheel 200 has a driving portion 111, and the driving portion 111 is eccentrically arranged relative to the support shaft 23. The rotor 11 is fixedly connected to the wind wheel 200 through the driving portion 111 to limit the axial position of the rotor 11 relative to the wind wheel 200, and the rotor 11 can apply a driving force tangential to the axis of rotation to the wind wheel 200 through the driving portion 111.

[0059] It can be understood that the driving part 111 is fixedly connected to the wind wheel 200, that is, the rotor 11 applies a force to the wind wheel 200 at the driving part 111 to drive the wind wheel 200 to rotate. The driving part 111 is eccentrically arranged relative to the support shaft 23, so that the driving part 111 and the rotation axis of the rotor 11 and the wind wheel 200 are staggered, and the distance between the driving part 111 and the rotation axis is the force arm of the wind wheel 200 subjected to the driving force from the rotor 11.

[0060] In this way, the lever arm of the driving force of the rotor 11 driving the wind wheel 200 to rotate can be increased, thereby reducing the driving force required for the rotor 11 to drive the wind wheel 200 to rotate, that is, the output torque required for the motor 100 to drive the wind wheel 200 to rotate can be reduced, while improving the stability of the motor 100 driving the wind wheel 200 to rotate.

[0061] Furthermore, if Figures 6-8 and Figure 11 As shown, the driving parts 111 are multiple and spaced around the support shaft 23. Thus, the rotor 11 is fixedly connected to the wind wheel 200 at multiple positions around the rotation axis, which can reduce or avoid the axial shaking of the wind wheel 200 relative to the rotor 11.

[0062] At the same time, the rotor 11 can apply driving force to the wind wheel 200 to rotate at multiple positions around the rotation axis, so that the rotor 11 can disperse the driving force on the wind wheel 200 at multiple driving parts 111 around the rotation axis, thereby improving the stability of the rotor 11 driving the wind wheel 200 to rotate.

[0063] In some embodiments, Figure 6 As shown, the driving part 111 is formed as a connecting hole, and the rotor 11 is fixedly connected to the wind wheel 200 through a fastener penetrating through the wind wheel 200 and the connecting hole. Figure 7 As shown, the driving part 111 is formed as a hot melt column, and the wind wheel 200 has a mounting hole corresponding to the hot melt column, the hot melt column is inserted into the mounting hole, and the rotor 11 is fixedly connected to the wind wheel 200 through the hot melt of the hot melt column. Therefore, the rotor 11 can be fixedly connected with the wind wheel 200 through the driving part 111, reducing or avoiding the rotation of the rotor 11 relative to the wind wheel 200 around the rotation axis, so as to maintain the synchronous rotation of the wind wheel 200 and the rotor 11, and improve the stability of the rotor 11 driving the wind wheel 200 to rotate.

[0064] In some embodiments,Figure 9 , Figure 10 As shown in Figure 10 , one side of the rotor 11 facing the wind wheel 200 has a first positioning structure 112, and the first positioning structure 112 is eccentrically arranged relative to the support shaft 23. One side of the wind wheel 200 facing the rotor 11 has a second positioning structure 220, and the first positioning structure 112 and the second positioning structure 220 are inserted and matched along the axial direction of the support shaft 23.

[0065] Thus, the first positioning structure 112 and the second positioning structure 220 are inserted and matched at a position far from the rotation axes of the wind wheel 200 and the rotor 11, which can limit the relative positions of the wind wheel 200 and the rotor 11 in the tangential direction of the rotation axis to ensure the synchronous rotation of the wind wheel 200 with the rotor 11. At the same time, the insertion and matching of the first positioning structure 112 and the second positioning structure 220 can guide the connection position of the rotor 11 on the wind wheel 200, facilitating the connection of the rotor 11 and the wind wheel 200 at the correct position, and the installation method is relatively simple, which can reduce the operation difficulty of installing the rotor 11 and the wind wheel 200.

[0066] Preferably, the first positioning structure 112 abuts against the second positioning structure 220 along the tangential direction of the rotation axis, so that the rotor 11 can apply a driving force in the tangential direction of the rotation axis to the second positioning structure 220 through the first positioning structure 112 to drive the wind wheel 200 to rotate synchronously with the rotor 11.

[0067] Furthermore, there are multiple first positioning structures 112 spaced around the support shaft 23. Correspondingly, there are multiple second positioning structures 220 on the side of the wind wheel 200 facing the rotor 11, which are spaced around the support shaft 23.

[0068] Thus, the first positioning structure 112 and the second positioning structure 220 can be inserted and matched at different positions around the rotation axes of the rotor 11 and the wind wheel 200, thereby limiting the relative positions between the rotor 11 and the wind wheel 200 at multiple positions around the rotation axis, improving the stability of the relative positions of the rotor 11 and the wind wheel 200 around the rotation axis, and improving the stability of the synchronous rotation of the wind wheel 200 with the rotor 11.

[0069] In some embodiments, as Figures 9-11 shown, one of the first positioning structure 112 and the second positioning structure 220 is a groove, and the other is a protrusion. Thus, the protrusion can be axially inserted into the groove to achieve the insertion and matching of the first positioning structure 112 and the second positioning mechanism.

[0070] It should be noted that in the Figures 9-11 example, the first positioning structure 112 is a groove and the second positioning structure 220 is a protrusion. In other embodiments, it can also be that the first positioning structure 112 is a protrusion and the second positioning structure 220 is a groove.

[0071] Further, as shown in Figure 6 , Figure 7 , the rotor 11 is formed with a shaft hole 113 passing through the support shaft 23. The rotor 11 includes a plurality of rib plates 114 arranged at intervals around the shaft hole 113. The rib plates 114 extend radially along the shaft hole 113, and grooves are formed between two adjacent rib plates 114.

[0072] It can be understood that a plurality of grooves are formed between the plurality of rib plates 114, and the plurality of rib plates 114 are arranged at intervals around the shaft hole 113, that is, the plurality of grooves are arranged at intervals around the shaft hole 113. That is to say, the first positioning structure 112 is a groove. Correspondingly, the second positioning structure 220 on the wind wheel 200 is a plurality of protrusions.

[0073] Thus, the rib plates 114 can provide radial support for the shaft hole 113 to improve the stability of the shaft hole 113, that is, to improve the stability of the rotor 11 sleeved on the support shaft 23 through the shaft hole 113 and rotating. At the same time, the space between the rib plates 114 can be used to form grooves, so that the protrusions on the wind wheel 200 can be inserted into the grooves, thereby improving the space utilization rate of the rotor 11 without setting additional space in the axial direction of the rotor 11 to form grooves, which is beneficial to reducing the axial dimension of the rotor 11.

[0074] Further, a driving portion 111 is formed at one end of the rib plate 114 away from the shaft hole 113 in the radial direction of the shaft hole 113. The rotor 11 is fixedly connected to the wind wheel 200 through the driving portion 111, and an avoidance recess 230 for avoiding the driving portion 111 is formed on the protrusion.

[0075] Thus, the rib plates 114 can provide support for the shaft hole 113 and form grooves around the shaft hole 113. At the same time, the rib plates 114 can also form the driving portion 111 for the fixed connection between the rotor 11 and the wind wheel 200, so that the rib plates 114 can perform multiple functions with one component, thereby simplifying the structure of the rotor 11 and improving the space utilization rate of the rotor 11, which is beneficial to reducing the axial dimension of the rotor 11.

[0076] At the same time, when the driving portion 111 is fixedly connected to the wind wheel 200 in the avoidance recess 230, the protrusions are simultaneously located in the grooves. Among them, the driving portion 111 can limit the axial position of the rotor 11 relative to the wind wheel 200 to reduce or avoid the wind wheel 200 disengaging from the motor 100 axially, and the driving portion 111 can also limit the position of the rotor 11 relative to the wind wheel 200 tangentially along the rotation axis. And through the insertion and matching of the protrusions and the grooves, the position of the rotor 11 relative to the wind wheel 200 tangentially along the rotation axis is further limited, improving the stability of the synchronous rotation of the wind wheel 200 with the rotor 11.

[0077] In some embodiments, as shown in Figure 2 ,Figure 4 As shown, the stator 22 is formed in the form of a housing that opens towards the direction of the wind wheel 200, and includes an annular portion 221 and an end portion 222. The end portion 222 is connected to the side of the annular portion 221 that is away from the wind wheel 200. One end of the support shaft 23 that is away from the wind wheel 200 is fixed to the end portion 222, making the setting position of the support shaft 23 stable, that is, the rotation axis is stable when the rotor 11 is sleeved on the support shaft 23. One end of the support shaft 23 that is close to the wind wheel 200 is suspended, so that the support shaft 23 can be axially spaced apart from the wind wheel 200 to avoid the support shaft 23 affecting the rotation of the wind wheel 200. Axial bearings 12 are respectively sleeved on both ends of the support shaft 23, so that the rotor 11 can be supported by the support shaft 23 at different axial positions through the bearings 12 at both ends of the support shaft 23, to improve the stability of the position of the rotor 11 relative to the support shaft 23, thereby improving the stability of the rotation axis of the rotor 11.

[0078] Thus, the annular portion 221 and the end portion 222 enclose to form a receiving cavity 21, and the receiving cavity 21 opens towards the wind wheel 200, making the structure of the stator 22 relatively simple. The rotor 11 can be placed into the receiving cavity 21 from the end of the stator 22 that opens towards the wind wheel 200, which is convenient for the installation operation of the rotor 11 on the stator 22. At the same time, one end of the support shaft 23 that is close to the wind wheel 200 is suspended, so that the support shaft 23 can be axially spaced from the wind wheel 200 to avoid the support shaft 23 interfering with the connection between the rotor 11 and the wind wheel 200, to ensure the reliable connection between the rotor 11 and the wind wheel 200.

[0079] In this application, the fixing method of the support shaft 23 at the end portion 222 is not limited. For example, the support shaft 23 is integrally injection-molded on the end portion 222. For another example, the support shaft 23 is welded to the end portion 222.

[0080] In this application, the connection method between the end portion 222 and the annular portion 221 is not limited. For example, the end portion 222 and the annular portion 221 are integrally injection-molded. For another example, the end portion 222 is welded to the annular portion 221.

[0081] Furthermore, as shown in Figure 4 and Figure 5 , a sealing groove 225 surrounding the opening of the receiving cavity 21 is provided at one end of the annular portion 221 that is close to the wind wheel 200. The sealing groove 225 opens towards the wind wheel 200. An extension plate 117 surrounding the rotation axis is provided on the outer peripheral surface of the rotor 11 at one end close to the wind wheel 200. A baffle 118 is provided at one end of the extension plate 117 that is away from the rotation axis. The baffle 118 extends axially away from the wind wheel 200. Among them, when the rotor 11 is installed on the stator 22, the baffle 118 is axially inserted into the sealing groove 225.

[0082] Thus, through the cooperation of the baffle 118, the extension plate 117, and the sealing groove 225, the axial position of the rotor 11 relative to the stator 22 can be defined, reducing or avoiding the rotor 11 from moving into the accommodation cavity 21 and causing the stator 22 to contact the wind wheel 200, and reducing or avoiding the stator 22 from interfering with the rotation of the wind wheel 200. At the same time, a labyrinth seal structure can be formed by the cooperation between the baffle 118, the extension plate 117, and the sealing groove 225, thereby reducing or avoiding liquid from entering the accommodation cavity 21, enabling the rotor 11 to seal the accommodation cavity 21, and improving the reliability of the motor 100.

[0083] In some embodiments, as Figures 4-7 shown, the rotor 11 includes a plurality of split rotor cores 115 and a plurality of magnets 116, and the stator 22 includes a stator core 223 and a stator winding 224 to drive the rotor 11 to rotate relative to the stator 22. Among them, using a plurality of split rotor cores 115 can reduce the magnetic leakage effect of magnetic field conduction on the split rotor cores 115.

[0084] Preferably, the plurality of split rotor cores 115 and the plurality of magnets 116 are axially encapsulated by a polymer composite 119, which can reduce or avoid the axial movement of the magnets 116, reduce or avoid the split rotor cores 115 from axially disengaging from the rotor 11, and improve the structural stability and rotational stability of the rotor 11. Among them, the material of the polymer composite 119 is preferably polybutylene terephthalate (PBT).

[0085] Preferably, when the stator 22 includes an annular portion 221 and an end portion 222, the stator core 223 and the stator winding 224 are integrally injection-molded in the annular portion 221, which can insulate and waterproof the stator core 223 and the stator winding 224. Among them, the annular portion 221 and the end portion 222 are preferably bulk molding compound parts.

[0086] In some embodiments, as Figure 8 shown, the wind wheel 200 is an axial flow wind wheel, which includes a hub 240 and blades 250 arranged on the circumferential side of the hub 240. The hub 240 is drivingly connected to the rotor 11, and the rotor 11 drives the hub 240 to rotate to realize the rotation of the blades 250.

[0087] Exemplarily, as Figures 8-10 shown, the axial flow wind wheel includes a plurality of blades 250 arranged on the hub 240. The trailing edge region of the blade 250 is recessed toward the leading edge intake direction of the blade 250. The plurality of blades 250 are centered on the rotation center axis of the wind wheel 200. The axial flow wind wheel 200 can reduce the airflow noise and increase the air volume. The specific structure and principle of the axial flow wind wheel 200 are well known to those skilled in the art and will not be elaborated here.

[0088] Certainly, the present application is not limited thereto. In other embodiments of the present application, the wind wheel 200 may also be of other types, such as cross-flow wind wheels, centrifugal wind wheels, etc.

[0089] The air conditioner according to the embodiment of the present application is characterized by including the blower 1000 in the above embodiment. Among them, the type of the air conditioner is not limited, and it may be an integrated air conditioner (such as a kitchen air conditioner, a window air conditioner, etc.), or a split air conditioner (such as a split cabinet air conditioner, a split wall-mounted air conditioner, etc.), or a ceiling air conditioner, a duct air conditioner, and so on.

[0090] For the air conditioner of the present application, by adopting the blower 1000 in the above embodiment, the blower 1000 can reduce the axial dimension of the motor 100 by embedding the bearing 12 in the rotor 11. The wind wheel 200 is directly connected to the rotor 11 of the motor 100, which can reduce the axial clearance between the rotor 11 and the wind wheel 200, that is, reduce the axial clearance between the motor 100 and the wind wheel 200, thereby reducing the axial dimension of the entire blower 1000, which is beneficial to the miniaturization of the blower 1000, and thus facilitating the layout of the blower 1000 in the air conditioner or reducing the volume of the air conditioner.

[0091] The other components and operations of the blower 1000 and the air conditioner according to the embodiment of the present application are known to those of ordinary skill in the art and will not be described in detail here.

[0092] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0093] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0094] In this application, unless otherwise clearly defined or limited, terms such as "install", "connect", "link", "fix", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the connection inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0095] In this application, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0096] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0097] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this application, and the scope of this application is defined by the claims and their equivalents.

Claims

1. A fan, characterized in that, Comprising: A motor, the motor including a rotor assembly and a stator assembly, the stator assembly including a stator and a support shaft, an accommodation cavity being formed in the stator, the support shaft passing through the accommodation cavity and being fixed to the stator, the rotor assembly being disposed in the accommodation cavity and sleeved outside the support shaft, the rotor assembly including a rotor and a bearing embedded in the rotor, the rotor being rotatably supported on the support shaft by the bearing; An impeller, the impeller being disposed at an axial end of the rotor, the impeller being drivingly connected to the rotor.

2. The fan according to claim 1, characterized in that, One side end face of the impeller facing the motor is in contact with one side end face of the rotor facing the impeller.

3. The fan according to claim 1, characterized in that, The impeller forms an accommodation groove recessed in a direction away from the motor, at least a part of the motor being embedded in the accommodation groove.

4. The blower according to claim 3, characterized in that, At least a part of the stator is embedded in the accommodation groove and is in clearance fit with the peripheral wall surface of the accommodation groove.

5. The fan according to claim 1, characterized in that, One side of the rotor facing the impeller has a driving part, the driving part being eccentrically arranged relative to the support shaft, and the rotor being fixedly connected to the impeller through the driving part.

6. The blower according to claim 5, characterized in that, There are a plurality of the driving parts, which are spaced around the support shaft.

7. The fan according to claim 5, characterized in that, The driving part is formed as a connecting hole, and the rotor is fixedly connected to the impeller through a fastener passing through the impeller and the connecting hole; alternatively, the driving part is formed as a hot melt column, the impeller has a mounting hole corresponding to the hot melt column, the hot melt column passes through the mounting hole, and the rotor is fixedly connected to the impeller through the hot melting of the hot melt column.

8. The fan according to claim 1, characterized in that, One side of the rotor facing the impeller has a first positioning structure, the first positioning structure being eccentrically arranged relative to the support shaft, one side of the impeller facing the rotor has a second positioning structure, and the first positioning structure and the second positioning structure are in plug-in fit along the axial direction of the support shaft.

9. The blower according to claim 8, characterized in that, There are a plurality of the first positioning structures, which are spaced around the support shaft.

10. The fan according to claim 8, characterized in that, One of the first positioning structure and the second positioning structure is a groove, and the other is a convex block.

11. The fan according to claim 10, characterized in that, The rotor forms a shaft hole passing through the support shaft, the rotor includes a plurality of rib plates spaced around the shaft hole, the rib plates extend radially along the shaft hole, and a groove is formed between two adjacent rib plates.

12. The fan according to claim 11, characterized in that, The rib plate forms a driving part at one end away from the shaft hole in the radial direction of the shaft hole, the rotor is fixedly connected to the impeller through the driving part, and an avoidance recess for avoiding the driving part is formed on the convex block.

13. The fan according to claim 1, characterized in that, The stator is formed in the form of a cover shell that is open in the direction of the impeller, so as to include an annular part and an end part, the end part being connected to the side of the annular part away from the impeller, the end of the support shaft away from the impeller being fixed to the end part, the end of the support shaft close to the impeller being suspended, and bearings being sleeved on both axial ends of the support shaft respectively.

14. The fan according to any one of claims 1-13, characterized in that, The rotor includes a plurality of split rotor cores and a plurality of magnets, and the stator includes a stator core and a stator winding; And / or, the impeller is an axial flow impeller to include a hub and blades arranged on the periphery of the hub, the hub being drivingly connected to the rotor.

15. An air conditioner, characterized in that, Including the blower according to any one of claims 1-14.

Images