An inner rotor fan stator and an inner rotor fan

Abstract

The utility model discloses an inner rotor fan stator and inner rotor fan, be located the outer periphery of inner rotor fan rotor, including the stator body with winding, wherein, the first bearing seat insert and the second bearing seat insert are set respectively to the upper and lower both ends of stator body, and the stator body, first bearing seat insert and second bearing seat insert are filled and embedded and / or the integral forming of cladding type stator housing is obtained, and first bearing seat insert is as first bearing seat, and second bearing seat insert is as second bearing seat, the utility model not only avoided the process that stator was pressed in stator (motor) housing additionally, and high assembly coaxial degree between stator housing and stator body and bearing was ensured respectively, satisfy high speed application scene demand while, simplify the assembly process of inner rotor fan and reduce manufacturing cost, ensure the performance of inner rotor fan simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of fans, specifically relating to an internal rotor fan stator and an internal rotor fan. Background Technology

[0002] As is well known, fans are widely used in household appliances. Structurally, a fan mainly consists of a motor, a stator, and a moving impeller. Specifically, existing motors typically use an internal rotor assembly, which mainly consists of a rotor-motor shaft assembly located on the inner circumference, a stator located on the outer circumference, and a motor housing. During installation, the stator is press-fitted into the motor housing, and then the rotor-motor shaft assembly is placed on the inner circumference of the stator. Bearings need to be installed between the motor shaft and the motor housing.

[0003] However, the applicant found that since wind turbines are usually used in high-speed applications, existing wind turbine motors not only require cumbersome assembly processes and have high structural costs, but also require the motor housing and stator to have high coaxiality, as well as high coaxiality with the upper and lower bearings. Otherwise, the motor performance will be significantly reduced, which places stringent requirements on the assembly process.

[0004] Therefore, the applicant hopes to find a technical solution to improve the above-mentioned technical problems. Summary of the Invention

[0005] In view of this, the purpose of this utility model is to provide an internal rotor fan stator and an internal rotor fan, which not only avoids the additional process of pressing the stator into the stator (motor) housing, but also ensures high assembly coaxiality between the stator housing and the stator body and the bearing, respectively. This meets the requirements of high-speed application scenarios, simplifies the assembly process of the internal rotor fan and reduces manufacturing costs, while ensuring the performance of the internal rotor fan.

[0006] The technical solution adopted in this utility model is as follows: An internal rotor fan stator, located on the outer periphery of the internal rotor fan rotor, includes a stator body with windings. A first bearing housing insert and a second bearing housing insert are respectively provided at the upper and lower ends of the stator body. The stator body, the first bearing housing insert and the second bearing housing insert are integrally formed by filling, embedding and / or covering to obtain a stator housing. The first bearing housing insert serves as a first bearing housing and the second bearing housing insert serves as a second bearing housing.

[0007] Preferably, the integral molding is carried out by integral injection molding or integral die casting.

[0008] Preferably, the first bearing housing insert includes a first bearing housing body unit located on the inner periphery and a plurality of first insert reinforcing bracket units extending outwardly at intervals relative to the first bearing housing body unit.

[0009] Preferably, the second bearing housing insert is located within a second bearing housing body unit located on the inner periphery and a plurality of second insert reinforcing bracket units extending peripherally outward relative to the second bearing housing body unit.

[0010] Preferably, the stator housing is made of bulk molding compound (BMC).

[0011] Preferably, the inner rotor fan rotor and the motor shaft are installed as a single unit, wherein one end of the motor shaft is rotatably connected to the first bearing seat via a first bearing, and the other end of the motor shaft is rotatably connected to the second bearing seat via a second bearing.

[0012] Preferably, an internal rotor fan includes an internal rotor motor, a stator impeller, a moving impeller, and a fan shroud that are installed and connected as a single unit; wherein, the internal rotor motor includes an internal rotor fan rotor and an internal rotor fan stator located on the outer periphery of the internal rotor fan rotor, and the internal rotor fan stator adopts the internal rotor fan stator according to the above description.

[0013] Preferably, the fixed impeller is fixedly connected to one end of the stator housing, and the moving impeller is fixedly connected to one end of the motor shaft; wherein, the shroud is located on the outer periphery of the moving impeller and is fixedly connected to the fixed impeller.

[0014] Preferably, the stator impeller and stator housing are integrally formed; or, the stator impeller, stator housing and fan cover are integrally formed.

[0015] Preferably, a control board is installed at the other end of the stator housing. The control board is electrically connected to the winding, and a control board protective cover is provided on the outer periphery of the control board and is fixedly connected to the stator housing.

[0016] This application specifically proposes a stator housing structure obtained by directly integrally molding the stator body. In order to ensure structural strength and coaxiality during integral molding, this application also specifically proposes to set a first bearing housing insert and a second bearing housing insert at the upper and lower ends of the stator body, respectively. Then, the stator body, the first bearing housing insert and the second bearing housing insert are filled, embedded and / or covered by integral molding to obtain the stator housing. This not only avoids the additional process of pressing the stator into the stator (motor) housing, but also ensures high assembly coaxiality between the stator housing and the stator body and the bearings, respectively. This meets the requirements of high-speed application scenarios, simplifies the assembly process of the internal rotor fan and reduces manufacturing costs, while ensuring the performance of the internal rotor fan. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the internal rotor fan motor according to a specific embodiment of this utility model; Figure 2 It is Figure 1 A schematic diagram of the structure after rotation at a certain angle; Figure 3 yes Figure 2 Sectional view along the AA direction; Figure 4 yes Figure 1 A schematic diagram of the decomposed structure; Figure 5 This is a structural schematic diagram of the internal rotor fan according to a specific embodiment of this utility model; Figure 6 yes Figure 5 A schematic diagram of the decomposed structure; Figure 7 This is a cross-sectional view of the internal rotor fan according to a specific embodiment of this utility model. Detailed Implementation

[0018] This utility model discloses an internal rotor fan stator located on the outer periphery of the internal rotor fan rotor. It includes a stator body with windings, wherein a first bearing seat insert and a second bearing seat insert are respectively provided at the upper and lower ends of the stator body. The stator body, the first bearing seat insert and the second bearing seat insert are filled, embedded and / or covered in an integral molding process to obtain a stator shell. The first bearing seat insert serves as a first bearing seat and the second bearing seat insert serves as a second bearing seat.

[0019] This utility model embodiment also discloses an internal rotor fan, including an internal rotor motor, a stator impeller, a moving impeller, and a fan shroud that are installed and connected as one unit; wherein, the internal rotor motor includes an internal rotor fan rotor and an internal rotor fan stator located on the outer periphery of the internal rotor fan rotor, and the internal rotor fan stator adopts the internal rotor fan stator according to the above description.

[0020] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0021] Please see Figure 1 , Figure 2 , Figure 3 and combined Figure 4As shown, an internal rotor fan stator 10 is located on the outer periphery of the internal rotor fan rotor 20. It includes a stator body 12 with windings 11 (with terminals 11a). A first bearing seat insert 13 and a second bearing seat insert 14 are respectively provided at the upper and lower ends of the stator body 12. The stator body, the first bearing seat insert 13 and the second bearing seat insert 14 are integrally formed by filling and embedding and / or covering (that is, the material is filled and embedded molding and / or covered molding. In specific implementation, it usually includes filling and embedding molding and covered molding, which can significantly increase the molding strength. Covered molding is usually partially covered molding, which is to facilitate installation in related structures) to obtain a stator housing 15. The first bearing seat insert 13 serves as the first bearing seat and the second bearing seat insert 14 serves as the second bearing seat.

[0022] Preferably, in this embodiment, the one-piece molding is carried out by one-piece injection molding or one-piece die casting; more specifically, in this embodiment, the one-piece molding is carried out by one-piece injection molding, and the material of the stator housing 15 is BMC material, which can further improve the structural strength of the stator housing 15, meet the requirements of high speed application scenarios, and facilitate good heat dissipation.

[0023] Preferably, in order to further enhance the strength of the integrally formed stator housing 15, in this embodiment, the first bearing housing insert 13 includes a first bearing housing body unit 13a located on the inner periphery and a plurality of first insert reinforcing bracket units 13b extending outwardly from the first bearing housing body unit 13a at intervals relative to the first bearing housing body unit 13a. Figure 4 (Showing 3); the second bearing housing insert 14 is located in a plurality of second insert reinforcing bracket units 14b, including the second bearing housing body unit 14a located on the inner periphery and the second bearing housing body unit 14a extending outwardly at intervals relative to the second bearing housing body unit 14a. Figure 4 (As shown in 3).

[0024] Preferably, combined with Figure 5 , Figure 6 and Figure 7 As shown, in this embodiment, the inner rotor fan rotor 20 and the motor shaft 30 are installed and connected as a whole. One end of the motor shaft 30 is rotatably connected to the first bearing seat (i.e., the first bearing seat insert 13) via the first bearing 31, and the other end of the motor shaft 30 is rotatably connected to the second bearing seat (i.e., the second bearing seat insert 14) via the second bearing 32.

[0025] Preferably, please refer to [see also] Figure 5 , Figure 6 and Figure 7As shown, this embodiment also proposes an internal rotor fan 1, including an internal rotor motor, a fixed impeller 40, a moving impeller 50 and a fan shroud 60 that are installed and connected as a whole; wherein, the internal rotor motor includes an internal rotor fan rotor 20 and an internal rotor fan stator located on the outer periphery of the internal rotor fan rotor 20, and the internal rotor fan stator adopts the internal rotor fan stator 10 described above according to this embodiment.

[0026] Preferably, in this embodiment, the fixed impeller 40 is fixedly connected to one end of the stator housing 15, and the moving impeller 50 is fixedly connected to one end of the motor shaft 30; wherein, the shroud 60 is located on the outer periphery of the moving impeller 50 and is fixedly connected to the fixed impeller 40.

[0027] It should be noted that, preferably, in other embodiments, the stator impeller 40 and the stator housing 15 adopt an integral molding structure; other preferred embodiments may also be adopted, for example, the stator impeller 40, the stator housing 15 and the fan cover 60 adopt an integral molding structure. These are all contents that can be further extended based on the embodiments of this application and are all within the scope of implementation of this application.

[0028] Preferably, in this embodiment, a control board 70 is installed at the other end of the stator housing 15. The control board 70 is electrically connected to the winding 11, and a control board protective cover 71 is provided on the outer periphery of the control board 70 and is fixedly connected to the stator housing 15.

[0029] This embodiment specifically proposes a stator housing 15 structure that is directly integrally formed on the stator body 12. In order to ensure structural strength and coaxiality during integral forming, this embodiment also proposes to set a first bearing seat insert 13 and a second bearing seat insert 14 at the upper and lower ends of the stator body 12, respectively. Then, the stator body 12, the first bearing seat insert 13 and the second bearing seat insert 14 are filled, embedded and / or covered in an integral forming process to obtain the stator housing 15. This not only avoids the additional process of pressing the stator 10 into the stator (motor) housing, but also ensures high assembly coaxiality between the stator housing 15 and the stator body 12 and the bearings, which meets the requirements of high-speed application scenarios, simplifies the assembly process of the internal rotor fan and reduces manufacturing costs, while ensuring the performance of the internal rotor fan.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment includes only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stator for an internal rotor fan, located on the outer periphery of the internal rotor fan rotor, characterized in that, The stator body includes a winding, wherein a first bearing housing insert and a second bearing housing insert are respectively provided at the upper and lower ends of the stator body. The stator body, the first bearing housing insert and the second bearing housing insert are filled, embedded and / or covered in an integral molding process to obtain a stator housing. The first bearing housing insert serves as a first bearing housing and the second bearing housing insert serves as a second bearing housing.

2. The internal rotor fan stator according to claim 1, characterized in that, The integral molding is achieved through integral injection molding or integral die casting.

3. The internal rotor fan stator according to claim 1, characterized in that, The first bearing housing insert includes a first bearing housing body unit located on the inner periphery and a plurality of first insert reinforcement bracket units extending outwardly at intervals relative to the first bearing housing body unit.

4. The internal rotor fan stator according to claim 1, characterized in that, The second bearing housing insert is located within a second bearing housing body unit located on the inner periphery and a plurality of second insert reinforcement bracket units extending outwardly from the second bearing housing body unit relative to the second bearing housing body unit.

5. The internal rotor fan stator according to claim 1, characterized in that, The stator housing is made of bulk molding compound (BMC).

6. The internal rotor fan stator according to claim 1, characterized in that, The inner rotor fan rotor and the motor shaft are installed as one unit. One end of the motor shaft is rotatably connected to the first bearing seat via a first bearing, and the other end of the motor shaft is rotatably connected to the second bearing seat via a second bearing.

7. An internal rotor fan, characterized in that, The device includes an internal rotor motor, a stator impeller, a moving impeller, and a fan shroud that are installed and connected as a single unit; wherein, the internal rotor motor includes an internal rotor fan rotor and an internal rotor fan stator located on the outer periphery of the internal rotor fan rotor, and the internal rotor fan stator adopts the internal rotor fan stator according to any one of claims 1-6.

8. The internal rotor fan according to claim 7, characterized in that, The fixed impeller is fixedly connected to one end of the stator housing, and the moving impeller is fixedly connected to one end of the motor shaft; wherein, the fan cover is located on the outer periphery of the moving impeller and is fixedly connected to the fixed impeller.

9. The internal rotor fan according to claim 7 or 8, characterized in that, The impeller and stator housing are integrally formed; or, the impeller, stator housing and fan cover are integrally formed.

10. The internal rotor fan according to claim 7, characterized in that, A control board is installed at the other end of the stator housing. The control board is electrically connected to the winding, and a control board protective cover is provided on the outer periphery of the control board and is fixedly installed and connected to the stator housing.

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