Motor, fan and air conditioner

Abstract

The invention discloses a motor, a fan and an air conditioner. The motor comprises a stator, a supporting shaft, a rotor and a waterproof structure. The stator comprises a cylinder part and an end part, the two axial ends of the cylinder part are a first end and a second end respectively, the end part is arranged at the first end, the end part and the cylinder part jointly define a containing cavity, and the second end is open to define a mounting opening. The supporting shaft penetrates through the containing cavity in the axial direction of the cylinder part and is supported at the end part. The rotor is installed in the containing cavity through the installation opening and arranged outside the supporting shaft in a sleeving mode. The waterproof structure is arranged at the second end and defines a water guide groove, at least part of the water guide groove protrudes to the side, away from the first end, of the second end, and the water guide groove extends downwards from the upper end of the installation opening and avoids the rotor. According to the motor, liquid can be reduced or prevented from entering the containing cavity, and installation of the rotor towards the interior of the containing cavity is simple.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a motor, a fan and an air conditioner. Background Technology

[0002] Air conditioner outdoor units are typically installed outdoors, and water may splash onto the vicinity of the air conditioner fan motor. In some related technologies, water can easily enter the motor, causing an internal short circuit and leading to motor failure. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a motor that can reduce or prevent liquid from entering the receiving cavity, and the installation of the rotor within the receiving cavity is relatively simple.

[0004] This application also proposes a fan having the aforementioned motor.

[0005] This application also proposes an air conditioner having the aforementioned fan.

[0006] An electric motor according to an embodiment of this application includes: a stator, the stator including a cylindrical portion and an end portion, the two axial ends of the cylindrical portion being a first end and a second end, the end portion being disposed at the first end and defining a receiving cavity together with the cylindrical portion, the second end being open to define a mounting port; a support shaft, the support shaft passing through the receiving cavity along the axial direction of the cylindrical portion and supported at the end portion; a rotor, the rotor being mounted in the receiving cavity through the mounting port and sleeved outside the support shaft; and a waterproof structure, the waterproof structure being disposed at the second end and defining a water guide groove, at least a portion of the water guide groove protruding to the side of the second end away from the first end, the water guide groove extending downward from the upper end of the mounting port and avoiding the rotor.

[0007] According to the embodiments of this application, the motor simplifies the installation of the rotor into the receiving cavity by setting the stator to the aforementioned open-end form. Furthermore, the first end of the cylindrical section is closed at the end, and the second end of the cylindrical section is provided with a waterproof structure. When liquid flows to the second end, the liquid can flow into the guide channel at the second end. The liquid in the guide channel can flow along the extension direction of the guide channel, that is, the liquid flows downwards from the upper end of the mounting port along the guide channel, so that the guide channel has a guiding effect on the liquid, thereby reducing or preventing liquid from flowing into the receiving cavity through the mounting port and improving the reliability of the motor.

[0008] In some embodiments, the waterproof structure is disposed around the mounting opening, and the water guide channel is an annular groove that surrounds the mounting opening and opens away from the mounting opening.

[0009] In some embodiments, the waterproof structure includes a first baffle and a second baffle spaced apart along the axial direction of the cylindrical portion, wherein the edge of the first baffle near the mounting opening is connected to the edge of the second baffle near the mounting opening to form the water guide groove between the first baffle and the second baffle.

[0010] Furthermore, an inlay groove is formed on the second end, opening in a direction away from the first end, and the first baffle is embedded in the inlay groove. The thickness of the first baffle is less than or equal to the depth of the inlay groove, and the stator includes a solid portion blocking the side of the first baffle away from the mounting opening.

[0011] Furthermore, the inlay groove is provided with a stop portion at a position away from the first end and the mounting opening, and the first baffle is formed with a recessed groove corresponding to the stop portion. The stop portion is provided in the recessed groove to prevent the first baffle from moving in a direction away from the first end.

[0012] In some embodiments, the waterproof structure is integrally injection molded with the stator.

[0013] In some embodiments, the connection between the peripheral wall surface of the cylindrical portion and the end face of the second end is provided by a guide slope, which is used to guide water from the peripheral wall surface to the water guide channel.

[0014] In some embodiments, one end of the support shaft is fixed to the end and the other end is suspended. The motor further includes a bearing embedded in the rotor, which is sleeved on the support shaft so that the rotor can rotate around the support shaft.

[0015] Furthermore, the bearings are respectively fitted at both ends of the support shaft.

[0016] In some embodiments, the rotor includes a plurality of modular rotor cores and a plurality of magnets, and the stator includes a stator core and stator windings.

[0017] A fan according to an embodiment of this application includes: a motor and a fan wheel as described in the above embodiments, wherein the fan wheel is disposed at one axial end of the rotor and is drivenly connected to the rotor.

[0018] According to the fan of the embodiment of this application, by adopting the motor of the above embodiment, the stator is closed at the first end of the cylindrical section. A waterproof structure is provided at the second end of the cylindrical section. When liquid flows to the second end, the liquid can flow into the guide groove at the second end. The liquid in the guide groove can flow along the extension direction of the guide groove, that is, the liquid flows downward from the upper end of the mounting port along the guide groove, so that the guide groove has a guiding effect on the liquid, thereby reducing or avoiding the liquid flowing into the receiving cavity through the mounting port, improving the stability of the fit between the stator, rotor and support shaft, improving the reliability of the motor, and thus improving the reliability of the fan.

[0019] In some embodiments, the impeller has a recessed receiving groove facing away from the motor, at least a portion of the motor is embedded in the receiving groove, and the side end face of the impeller facing the motor is in contact with the side end face of the rotor facing the impeller.

[0020] In some embodiments, the rotor has a drive unit on the side facing the wind turbine, and the rotor is fixedly connected to the wind turbine through the drive unit. There are multiple drive units that are spaced apart and surround the support shaft.

[0021] In some embodiments, the rotor has a first positioning structure on the side facing the wind turbine, and the wind turbine has a second positioning structure on the side facing the rotor. The first positioning structure and the second positioning structure are inserted into each other along the axial direction of the support shaft. There are multiple first positioning structures that are spaced apart around the support shaft.

[0022] An air conditioner according to an embodiment of this application includes the motor of the above embodiment, or the fan of the above embodiment.

[0023] According to the air conditioner of this application embodiment, by employing the motor or fan of the above embodiment, an end seal is provided at the first end of the cylinder. A waterproof structure is provided at the second end of the cylinder. When liquid flows to the second end, the liquid can flow into the water guide groove at the second end. The liquid in the water guide groove can flow along the extension direction of the water guide groove, that is, the liquid flows downward from the upper end of the mounting port along the water guide groove, so that the water guide groove has a guiding effect on the liquid, thereby reducing or preventing the liquid from flowing into the receiving cavity through the mounting port, improving the stability of the fit between the stator, rotor and support shaft, improving the reliability of the motor, and thus improving the reliability of the air conditioner.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of an electric motor according to an embodiment of this application;

[0026] Figure 2 This is a cross-sectional view of the stator and waterproof structure according to an embodiment of this application;

[0027] Figure 3 yes Figure 2 A magnified view of the stator and waterproof structure at the mounting groove;

[0028] Figure 4 This is a cross-sectional structural diagram of the stator according to an embodiment of this application;

[0029] Figure 5 yes Figure 4 The diagram shows the three-dimensional structure of the stator.

[0030] Figure 6 This is a cross-sectional view of a waterproof structure according to an embodiment of this application;

[0031] Figure 7 yes Figure 6 The diagram shows a three-dimensional structure of the waterproof structure.

[0032] Figure 8 This is a cross-sectional structural diagram of a fan according to an embodiment of this application;

[0033] Figure 9 This is a schematic diagram of the rotor structure according to an embodiment of this application;

[0034] Figure 10 This is a schematic diagram of the rotor according to another embodiment of this application;

[0035] Figure 11 This is a schematic diagram of the structure of a wind turbine according to an embodiment of this application;

[0036] Figure 12 yes Figure 11 The diagram shows a partial structural view of the wind turbine at the second positioning structure.

[0037] Figure 13 This is an exploded schematic diagram of a fan according to an embodiment of this application.

[0038] Figure label:

[0039] Fan 1000

[0040] Motor 100

[0041] Stator 10, cylindrical section 11, first end 111, second end 112, end portion 12, receiving cavity 13, mounting opening 14, inlay groove 15, stop portion 151, solid portion 16, guide slope 17, peripheral wall surface 18, stator core 191, stator winding 192.

[0042] Support shaft 20

[0043] Rotor 30, modular rotor core 31, magnet 32, drive unit 33, first positioning structure 34, shaft hole 35, stiffening plate 36, waterproof structure 40, water guide groove 41, first baffle 42, second baffle 43, settling groove 44.

[0044] Bearing 50

[0045] Wind turbine 200, receiving trough 210, second positioning structure 220, hub 240, blades 250. Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0047] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0048] The following description, with reference to the accompanying drawings, describes an embodiment of a motor 100, a fan 1000, and an air conditioner according to the present application.

[0049] like Figure 1 , Figure 2 As shown, the motor 100 according to an embodiment of this application includes: a stator 10, a support shaft 20, a rotor 30, and a waterproof structure 40.

[0050] The stator 10 includes a cylindrical portion 11 and an end portion 12. The axial ends of the cylindrical portion 11 are a first end 111 and a second end 112, respectively. The end portion 12 is located at the first end 111 and, together with the cylindrical portion 11, defines a receiving cavity 13. The second end 112 is open to define a mounting port 14. A support shaft 20 passes through the receiving cavity 13 along the axial direction of the cylindrical portion 11 and is supported by the end portion 12. The rotor 30 is installed in the receiving cavity 13 through the mounting port 14 and is sleeved on the outside of the support shaft 20, which facilitates the installation of the rotor 30 in the receiving cavity 13. A waterproof structure 40 is located at the second end 112 and defines a water guide groove 41. At least a portion of the water guide groove 41 protrudes to the side of the second end 112 away from the first end 111. The water guide groove 41 extends downward from the upper end of the mounting port 14 and avoids the rotor 30, so as to reduce or avoid interference of the water guide groove 41 with the rotation of the rotor 30 relative to the stator 10.

[0051] Therefore, by setting the stator 10 to the aforementioned open-end form, the installation of the rotor 30 into the receiving cavity 13 is relatively simple. Furthermore, the first end 111 of the cylindrical portion 11 is closed by the end 12, and the second end 112 of the cylindrical portion 11 is provided with a waterproof structure 40. When liquid flows to the second end 112, the liquid can flow into the water guide groove 41. The liquid in the water guide groove can flow along the extension direction of the water guide groove, that is, the liquid flows downward from the upper end of the mounting port 14 along the water guide groove 41, so that the water guide groove has a guiding effect on the liquid, thereby reducing or preventing liquid from flowing into the receiving cavity 13 through the mounting port 14, and improving the reliability of the motor 100.

[0052] In this application, the connection relationship between the support shaft 20, the rotor 30, and the stator 10 is not limited. For example, the support shaft 20 is fixed to the stator 10, and the rotor 30 is rotatably sleeved on the support shaft 20.

[0053] In some embodiments, such as Figure 1 , Figure 6 and Figure 7 As shown, the waterproof structure 40 is arranged around the mounting opening 14, and the water guide channel 41 is an annular channel that surrounds the mounting opening 14 and opens in a direction away from the mounting opening 14.

[0054] Therefore, the liquid surrounding the mounting port 14 at the second end 112 can flow into the water guide trough 41. The liquid in the water guide trough 41, guided by the trough 41, can flow around the mounting port 14 and downwards, allowing the liquid to flow below the mounting port 14 under the influence of gravity and the guidance of the water guide trough 41. Thus, the water guide trough 41 can guide the liquid circumferentially around the mounting port 14, avoiding its flow and further reducing or preventing liquid from flowing into the receiving cavity 13 through the mounting port 14, thereby further improving the reliability of the motor 100.

[0055] In some embodiments, such as Figure 2 , Figure 6 and Figure 7 As shown, the waterproof structure 40 includes a first baffle 42 and a second baffle 43 spaced apart along the axial direction of the cylindrical portion 11. The edge of the first baffle 42 near the mounting opening 14 is connected to the edge of the second baffle 43 near the mounting opening 14 to form a water guide groove 41 between the first baffle 42 and the second baffle 43.

[0056] Thus, the water guide channel 41 and the installation port 14 are separated by the edges of the first baffle 42 and the second baffle 43, so that the liquid in the water guide channel 41 and the installation port 14 are separated by the edges of the first baffle 42 and the second baffle 43, thereby reducing or preventing the liquid in the water guide channel 41 from flowing to the installation port 14.

[0057] Meanwhile, the first baffle 42 and the second baffle are spaced apart along the axial direction, so that the extension direction of the water guide channel 41 is perpendicular to the axial direction, thereby reducing the movement of liquid along the axial direction in the water guide channel 41 and reducing or preventing liquid from flowing out of the water guide channel 41 and flowing to the installation port 14 along the axial direction.

[0058] Furthermore, such as Figures 3-5 As shown, a mounting groove 15 is formed on the second end 112, which opens in a direction away from the first end 111. The first baffle 42 is embedded in the mounting groove 15. The thickness t1 of the first baffle 42 is less than or equal to the groove depth t2 of the mounting groove 15. The stator 10 includes a solid portion 16 that blocks the side of the first baffle 42 away from the mounting opening 14. The solid portion 16 can prevent the waterproof structure 40 from leaving the stator 10 in a direction away from the mounting opening 14.

[0059] It is understandable that the thickness t1 of the first baffle 42 is less than or equal to the groove depth t2 of the inlay groove 15, so that the surface of the first baffle 42 away from the first end 111 can be flush with the surface of the second end 112 away from the first end 111, or the surface of the first baffle 42 away from the first end 111 is recessed relative to the surface of the second end 112 away from the first end 111.

[0060] Therefore, when the liquid flows along the end face of the second end 112 to the water guide channel 41, it can directly pass through the surface of the first baffle 42 away from the first end 111 and flow between the first baffle 42 and the second baffle 43, reducing or avoiding the obstruction of the first baffle 42 when the liquid flows from the end of the second end 112 to the water guide channel 41. This improves the smoothness of the liquid flow to the water guide channel 41 and reduces or avoids splashing caused by the liquid being blocked by the first baffle 42, thereby reducing or avoiding the risk of liquid splashing and entering the receiving cavity 13 from the mounting port 14.

[0061] In addition, the inlay groove 15 can define the connection position of the waterproof structure 40 at the second end 112, and the first baffle 42 and the inner wall of the inlay groove 15 cooperate to form a labyrinth seal, which can reduce or prevent liquid from flowing from between the first baffle 42 and the inner wall of the inlay groove 15 to the mounting port 14.

[0062] Furthermore, such as Figure 3 As shown, the inlay groove 15 is provided with a stop portion 151 at a position away from the first end 111 and the mounting port 14. The first baffle 42 is formed with a recess 44 corresponding to the stop portion 151. The stop portion 151 is provided in the recess 44 to prevent the first baffle 42 from moving in a direction away from the first end 111.

[0063] Therefore, the stop portion 151 can limit the axial position of the first baffle 42 within the mounting groove 15, improving the stability of the waterproof structure 40 relative to the stator 10 along the axial direction, thereby improving the reliability of the liquid guiding effect of the water guiding groove 41. Simultaneously, the stop portion 151 can increase the contact area between the first baffle 42 and the inner wall of the mounting groove 15, improving the sealing between the first baffle 42 and the inner wall of the mounting groove 15. This further enhances the effect of the water guiding groove 41 in guiding liquid away from the mounting port 14.

[0064] In some embodiments, the waterproof structure 40 is integrally injection molded with the stator 10, which reduces the number of molds required to manufacture the waterproof structure 40 and the stator 10, and simplifies the manufacturing process of the stator 10 and the waterproof structure 40. At the same time, it can reduce or avoid gaps between the waterproof structure 40 and the stator 10, and reduce or avoid liquid from flowing from the gaps at the connection between the waterproof structure 40 and the stator 10 to the mounting port 14.

[0065] In this application, there are no restrictions on the material of the waterproof structure 40. Preferably, the waterproof structure 40 is a bulk molding compound.

[0066] In some embodiments, such as Figure 2 As shown, the connection between the peripheral wall surface 18 of the cylindrical part 11 and the end face of the second end 112 is connected by a guide slope 17, which is used to guide water from the peripheral wall surface 18 to the water tank 41.

[0067] Therefore, the liquid on the peripheral wall 18 of the cylinder 11 can flow through the guide slope 17 into the water guide groove 41, improving the smoothness of the liquid flow from the peripheral wall 18 of the cylinder 11 to the water guide groove 41, reducing or avoiding splashing of the liquid during the flow from the peripheral wall 18 of the cylinder 11 to the water guide groove 41, thereby reducing or avoiding the risk of liquid splashing and entering the receiving cavity 13 from the mounting port 14.

[0068] In some embodiments, such as Figure 1As shown, one end of the support shaft 20 is fixed to the end 12 to stabilize the support shaft 20 in the stator 10, and the other end is suspended so that the support shaft 20 can be spaced apart from the wind turbine 200 along the axial direction to avoid the support shaft 20 affecting the rotation of the wind turbine 200.

[0069] The motor 100 also includes a bearing 50 embedded in the rotor 30. The bearing 50 is sleeved on the support shaft 20 so that the rotor 30 can rotate around the support shaft 20. Thus, the rotation axis of the rotor 30 extends along the support shaft 20, and the support shaft 20 is stable in the stator 10. This stabilizes the rotation axis of the rotor 30 when it is sleeved on the support shaft 20, thereby achieving stable rotation of the rotor 30 relative to the stator 10 with a fixed rotation axis.

[0070] Furthermore, such as Figure 1 As shown, bearings 50 are respectively fitted at both ends of the support shaft 20. Thus, the rotor 30 can be supported by the support shaft 20 at different axial positions through the bearings 50 at both ends of the support shaft 20, thereby improving the stability of the rotor 30's position relative to the support shaft 20, and thus improving the stability of the rotor 30's rotation axis, that is, improving the stability of the rotor 30's rotation.

[0071] In some embodiments, such as Figure 1 , Figure 4 , Figure 9 and Figure 10 As shown, the rotor 30 includes multiple modular rotor cores 31 and multiple magnets 32, and the stator 10 includes a stator core 191 and a stator winding 192. This enables the rotor 30 to rotate relative to the stator 10. The use of multiple modular rotor cores 31 reduces the leakage magnetic field effect caused by the magnetic field conduction on the modular rotor cores 31.

[0072] Preferably, multiple modular rotor cores 31 and multiple magnets 32 are encapsulated axially by a polymer component, which can reduce or avoid axial movement of the magnets 32 and reduce or avoid axial detachment of the modular rotor cores 31 from the rotor 30, thereby improving the structural stability and rotational stability of the rotor 30. The polymer component is preferably made of polybutylene terephthalate (PBT).

[0073] Preferably, when the stator 10 includes a cylindrical portion 11 and an end portion 12, the stator core 191 and the stator winding 192 are integrally injection molded within the cylindrical portion 11, thereby providing insulation and waterproof protection for the stator core 191 and the stator winding 192. The cylindrical portion 11 and the end portion 12 are preferably bulk molding compound parts.

[0074] like Figure 8As shown, the fan 1000 according to the embodiment of this application includes a fan wheel 200 and a motor 100 as described in the above embodiment. The fan wheel 200 is disposed at one axial end of the rotor 30 and is drivenly connected to the rotor 30 so that the rotor 30 drives the fan wheel 200 to rotate.

[0075] The fan 1000 of this application, by adopting the motor 100 of the above embodiment, has a stator 10 closed at the first end 111 of the cylindrical portion 11 by an end 12. A waterproof structure 40 is provided at the second end 112 of the cylindrical portion 11. When liquid flows to the second end 112, the liquid can flow into the water guide groove 41 at the second end 112. The liquid in the water guide groove can flow along the extension direction of the water guide groove, that is, the liquid flows downward from the upper end of the mounting port 14 along the water guide groove 41, so that the water guide groove has a guiding effect on the liquid, thereby reducing or avoiding the liquid flowing into the receiving cavity 13 through the mounting port 14, improving the stability of the fit between the stator 10, rotor 30 and support shaft 20, improving the reliability of the motor 100, and thus improving the reliability of the fan 1000.

[0076] In some embodiments, such as Figure 8 As shown, the impeller 200 has a recessed receiving groove 210 that is recessed in a direction away from the motor 100. At least a portion of the motor 100 is embedded in the receiving groove 210. 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 axially away from the motor 100.

[0077] Therefore, the motor 100 can be partially embedded in the receiving groove 210 along the axial direction, which can reduce the overall axial dimension of the fan 1000. At the same time, the receiving groove 210 can define the connection position of the motor 100 in the impeller 200, simplify the connection operation between the impeller 200 and the motor 100, reduce or avoid installation errors between the motor 100 and the impeller 200, and play a role in preventing mistakes.

[0078] Furthermore, the end face of the impeller 200 facing the motor 100 is in contact with the end face of the rotor 30 facing the impeller 200. As a result, the rotor 30 can abut against the impeller 200 at different positions outside the rotation axis, thereby reducing or avoiding axial swaying of the impeller 200 relative to the rotor 30 and improving the stability of the rotor 30 driving the impeller 200 to rotate.

[0079] Simultaneously, it can limit the relative position of the rotor 30 and the impeller 200 along the axial direction, reduce or avoid axial movement of the impeller 200 relative to the rotor 30, improve the stability of the connection between the rotor 30 and the impeller 200, and improve the stability of the motor 100 driving the impeller 200 to rotate. In addition, it facilitates the positioning of the relative position of the rotor 30 and the impeller 200 along the axial direction, simplifying the connection operation between the impeller 200 and the rotor 30.

[0080] In some embodiments, such as Figure 9 , Figure 10 As shown, the rotor 30 has a drive unit 33 on the side facing the wind turbine 200. The rotor 30 is fixedly connected to the wind turbine 200 through the drive unit 33 to define the axial position of the rotor 30 relative to the wind turbine 200. The rotor 30 can apply a tangential driving force along the rotation axis to the wind turbine 200 through the drive unit 33, so that the rotor 30 drives the wind turbine 200 to rotate through the drive unit 33.

[0081] Meanwhile, multiple drive units 33 are spaced apart and surround the support shaft 20. Thus, the rotor 30 is fixedly connected to the wind turbine 200 at multiple positions around the rotation axis, reducing or preventing axial swaying of the wind turbine 200 relative to the rotor 30. Furthermore, the rotor 30 can apply drive force to the wind turbine 200 at multiple positions around the rotation axis, allowing the rotor 30 to distribute the driving force on the wind turbine 200 among the multiple drive units 33 around the rotation axis, thereby improving the stability of the rotor 30 driving the wind turbine 200 to rotate.

[0082] Preferably, the drive unit 33 is eccentrically positioned relative to the support shaft 20.

[0083] In this application, the structure of the drive unit 33 is not limited. For example, in Figure 9 In one example, the drive unit 33 is formed as a connecting hole, and the rotor 30 is fixedly connected to the wind turbine 200 by fasteners passing through the wind turbine 200 and the connecting hole. For another example, in... Figure 10 In the example, the drive unit 33 is formed as a hot melt column, and the impeller 200 has mounting holes corresponding to the hot melt column. The hot melt column passes through the mounting holes, and the rotor 30 is fixedly connected to the impeller 200 through the hot melt of the hot melt column.

[0084] In some embodiments, such as Figure 9 , Figure 10 and Figure 12 As shown, the rotor 30 has a first positioning structure 34 on the side facing the wind turbine 200, and the wind turbine 200 has a second positioning structure 220 on the side facing the rotor 30. The first positioning structure 34 and the second positioning structure 220 are inserted and engaged along the axial direction of the support shaft 20.

[0085] Therefore, the first positioning structure 34 and the second positioning structure 220 are engaged at a position away from the rotation axis of the wind turbine 200 and the rotor 30, which can limit the relative position of the wind turbine 200 and the rotor 30 in the tangential direction of the rotation axis, so as to ensure that the wind turbine 200 rotates synchronously with the rotor 30. At the same time, the engagement of the first positioning structure 34 and the second positioning structure 220 can guide the connection position of the rotor 30 on the wind turbine 200, making it easier for the rotor 30 and the wind turbine 200 to be connected in the correct position, and the installation method is relatively simple, which can reduce the operational difficulty of installing the rotor 30 and the wind turbine 200.

[0086] Preferably, the first positioning structure 34 abuts against the second positioning structure 220 along the tangential direction of the rotation axis, so that the rotor 30 can apply a driving force along the rotation axis to the second positioning structure 220 through the first positioning structure 34, so as to drive the impeller 200 to rotate synchronously with the rotor 30.

[0087] Furthermore, there are multiple first positioning structures 34 spaced apart around the support shaft 20. Correspondingly, there are multiple second positioning structures 220 on the side of the wind turbine 200 facing the rotor 30, spaced apart around the support shaft 20.

[0088] Therefore, the first positioning structure 34 and the second positioning structure 220 can be simultaneously engaged at different positions around the rotation axis of the rotor 30 and the wind turbine 200, thereby simultaneously defining the relative position between the rotor 30 and the wind turbine 200 at multiple positions around the rotation axis, improving the stability of the relative position of the rotor 30 and the wind turbine 200 around the rotation axis, and thus improving the stability of the wind turbine 200 rotating synchronously with the rotor 30.

[0089] Furthermore, one of the first positioning structure 34 and the second positioning structure 220 is a groove and the other is a protrusion. The protrusion can be inserted into the groove along the axial direction to realize the insertion and engagement of the first positioning structure 34 and the second positioning structure 220.

[0090] Preferably, such as Figure 9 , Figure 10 As shown, the rotor 30 has a shaft hole 35 through which the support shaft 20 passes. The rotor 30 includes a plurality of stiffeners 36 spaced around the shaft hole 35. The stiffeners 36 extend radially along the shaft hole 35, and a groove is formed between two adjacent stiffeners 36.

[0091] Preferably, such as Figure 9 , Figure 10 As shown, the stiffener 36 has a drive part 33 formed at the end of the shaft hole 35 in the radial direction away from the shaft hole 35, and the rotor 30 is fixedly connected to the wind turbine 200 through the drive part 33.

[0092] In some embodiments, such as Figure 11 and Figure 13 As shown, the wind turbine 200 is an axial flow wind turbine including a hub 240 and blades 250 disposed around the hub 240. The hub 240 is driven to the rotor 11, and the rotor 11 drives the hub 240 to rotate so as to realize the rotation of the blades 250.

[0093] For example, the axial flow impeller 200 includes a plurality of blades 250 disposed on a hub 240. The trailing edge region of the blades 250 is recessed towards the air intake direction of the leading edge of the blades 250. The plurality of blades 250 are centered on the rotational axis of the impeller 200. The axial flow impeller 200 can reduce airflow noise and increase airflow. The specific structure and principle of the axial flow impeller 200 are well known to those skilled in the art and will not be described in detail here.

[0094] Of course, this application is not limited to this. In other embodiments of this application, the wind turbine 200 may also be of other types, such as a cross-flow wind turbine, a centrifugal wind turbine, etc.

[0095] The air conditioner according to the embodiments of this application includes the motor 100 of the above embodiments or the fan 1000 of the above embodiments. The type of air conditioner is not limited; it can be an integrated air conditioner (such as a kitchen air conditioner, window air conditioner, etc.), a split air conditioner (such as a split floor-standing unit, a split wall-mounted unit, etc.), a ceiling unit, a ducted unit, etc.

[0096] The air conditioner of this application, by employing the motor 100 or the fan 1000 of the above embodiments, has its first end 111 of the cylindrical portion 11 sealed by an end 12. A waterproof structure 40 is provided at the second end 112 of the cylindrical portion 11. When liquid flows to the second end 112, it can flow into the water guide groove 41. The liquid in the water guide groove can flow along the extension direction of the water guide groove, that is, the liquid flows downward from the upper end of the mounting port 14 within the water guide groove 41. This allows the water guide groove to guide the liquid, reducing or preventing liquid from flowing into the receiving cavity 13 through the mounting port 14, improving the stability of the fit between the stator 10, rotor 30, and support shaft 20, improving the reliability of the motor 100, and thus improving the reliability of the air conditioner.

[0097] The motor 100, fan 1000, and other components and operations of the air conditioner according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0098] In the description of this application, it should be understood that the terms "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0099] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0100] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0101] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0102] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0103] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric motor, characterized in that, include: The stator includes a cylindrical portion and an end portion. The two axial ends of the cylindrical portion are a first end and a second end, respectively. The end portion is located at the first end and together with the cylindrical portion defines a receiving cavity. The second end is open to define an installation port. A support shaft, which passes through the receiving cavity along the axial direction of the cylindrical portion and is supported at the end; The rotor is installed in the receiving cavity through the mounting port and sleeved outside the support shaft; A waterproof structure is provided at the second end and defines a water guide groove, at least a portion of which protrudes to the side of the second end away from the first end, and the water guide groove extends downward from the upper end of the mounting port and avoids the rotor.

2. The motor as described in claim 1, characterized in that, The waterproof structure is arranged around the mounting opening, and the water guide groove is an annular groove that surrounds the mounting opening and opens away from the mounting opening.

3. The motor as described in claim 1, characterized in that, The waterproof structure includes a first baffle and a second baffle spaced apart along the axial direction of the cylindrical portion. The edge of the first baffle near the mounting opening is connected to the edge of the second baffle near the mounting opening to form the water guide groove between the first baffle and the second baffle.

4. The motor as described in claim 3, characterized in that, The second end has an inlay groove that opens toward the direction away from the first end. The first baffle is embedded in the inlay groove. The thickness of the first baffle is less than or equal to the depth of the inlay groove. The stator includes a solid portion that blocks the side of the first baffle away from the mounting opening.

5. The motor as described in claim 4, characterized in that, The inlay groove is provided with a stop portion at a position away from the first end and the mounting port. The first baffle is formed with a recessed groove corresponding to the stop portion. The stop portion is provided in the recessed groove to prevent the first baffle from moving in a direction away from the first end.

6. The motor as described in claim 1, characterized in that, The waterproof structure is integrally injection molded with the stator.

7. The motor as described in claim 1, characterized in that, The connection between the peripheral wall of the cylinder and the end face of the second end is made by a guide slope, which is used to guide water from the peripheral wall to the water channel.

8. The motor as described in any one of claims 1-7, characterized in that, One end of the support shaft is fixed to the end of the motor and the other end is suspended. The motor also includes a bearing embedded in the rotor and sleeved on the support shaft so that the rotor can rotate around the support shaft.

9. The motor as described in claim 8, characterized in that, The bearings are respectively fitted at both ends of the support shaft.

10. The motor as described in claim 8, characterized in that, The rotor includes multiple modular rotor cores and multiple magnets, and the stator includes a stator core and stator windings.

11. A fan, characterized in that, include: The motor and wind turbine as described in any one of claims 8-10, wherein the wind turbine is disposed at one axial end of the rotor and is drivenly connected to the rotor.

12. The fan as described in claim 11, characterized in that, The impeller has a recessed receiving groove facing away from the motor, at least a portion of the motor is embedded in the receiving groove, and the side end face of the impeller facing the motor is in contact with the side end face of the rotor facing the impeller.

13. The fan as described in claim 11, characterized in that, The rotor has a drive unit on the side facing the wind turbine, and the rotor is fixedly connected to the wind turbine through the drive unit. There are multiple drive units that are spaced apart and surround the support shaft.

14. The fan as described in claim 11, characterized in that, The rotor has a first positioning structure on the side facing the wind turbine, and the wind turbine has a second positioning structure on the side facing the rotor. The first positioning structure and the second positioning structure are inserted into each other along the axial direction of the support shaft. There are multiple first positioning structures that are spaced apart around the support shaft.

15. An air conditioner, characterized in that, It includes the motor according to any one of claims 1-10, or the fan according to any one of claims 11-14.

Images