A stator structure for an AC motor, an AC motor module for a fan, and a fan.

Abstract

This utility model relates to the field of electric motors, and particularly to a stator structure for an AC motor, an AC motor module for a fan, and a fan. It includes a stator body with a cavity for assembling a rotor. Four sets of stator teeth are evenly distributed along the outer periphery of the cavity on the outer side of the stator body. A winding cavity is formed between adjacent sets of stator teeth, and an opening penetrating into the cavity is formed on the sidewall of the winding cavity. This optimized structural design improves the number of stator teeth, resulting in higher production efficiency and yield.

Description

Technical Field

[0001] This utility model relates to the field of electric motors, and in particular to a stator structure for an AC motor, an AC motor module for a fan, and a fan. Background Technology

[0002] In traditional AC motors, especially 2-pole AC fan motors, the stator winding is mostly done manually. Of course, some use winding equipment for coarse winding. However, most existing fan motors have 12 stator teeth (forming 6 groups of 2 poles), which makes the winding process cumbersome. The process is particularly complicated when winding manually. As products become more refined, the multiple windings on smaller stators also lead to a decrease in the yield rate of winding equipment, affecting product quality. Utility Model Content

[0003] The purpose of this invention is to provide a stator structure for an AC motor that optimizes the number of stator teeth through a reasonable structural design, thereby increasing the production efficiency and yield of the product.

[0004] To achieve the above objectives, the present invention adopts the following solution: A stator structure for an AC motor includes a stator body, a cavity for assembling a mover on the stator body, and four sets of stator teeth on the outer side of the cavity on the stator body. The four sets of stator teeth are evenly distributed along the outer periphery of the cavity, and a winding cavity is formed between two adjacent sets of stator teeth. An opening penetrating into the cavity is also formed on the side wall of the winding cavity.

[0005] As described above, the stator structure of an AC motor includes an outer frame and an annular frame. The annular frame is located inside the outer frame and forms the cavity. The outer periphery of the annular frame is connected to the outer frame through the stator teeth. The opening is formed on the annular frame.

[0006] As described above, the stator structure of an AC motor includes a first stator tooth group and a second stator tooth group. The first stator tooth group consists of two oppositely distributed first stator teeth, and the second stator tooth group consists of two oppositely distributed second stator teeth. The first stator teeth and the second stator tooth group are distributed adjacent to each other.

[0007] In the stator structure of an AC motor as described above, the width of the stator teeth is 1 / 3 to 1 / 4 of the width of the stator body on the same side.

[0008] As described above, in the stator structure of an AC motor, the two sides of the first stator tooth are straight sides extending parallel from the annular frame to the outer frame, and the two sides of the second stator tooth are oblique sides extending gradually from the annular frame to the outer frame.

[0009] As described above, the stator structure of an AC motor further includes a leakage magnetic structure on the side of the stator teeth near the cavity.

[0010] The stator structure of an AC motor as described above, wherein the leakage magnetic structure is a through-hole structure that penetrates the front and rear sides of the stator teeth.

[0011] The stator structure of an AC motor as described above, wherein the leakage magnetic structure is a guide groove structure that runs through the front and rear sides of the stator teeth and one side is connected to the cavity.

[0012] This utility model also provides an AC motor module for a fan, including the stator structure described above, a mover disposed on the stator body, and a first bracket and a second bracket installed on the front and rear sides of the stator body.

[0013] This utility model also provides a fan, characterized in that it includes a fan body, on which an AC motor module is provided.

[0014] In summary, the advantages of this utility model over the prior art are: This utility model provides a stator structure for an AC motor. Through optimized design, it adopts four sets of stator teeth surrounding the outer periphery of the mover cavity, and adjacent stator teeth are connected to the cavity through a winding cavity, which facilitates the winding operation. The four evenly distributed sets of stator teeth make the winding operation simpler and facilitate miniaturization design. When using winding equipment, it simplifies the winding process, resulting in a high yield and reduced costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the stator structure of an AC motor according to the present invention; Figure 2 These are schematic diagrams of different embodiments of the stator structure; Figure 3 These are schematic diagrams of different embodiments of the stator structure; Figure 4 These are schematic diagrams of different embodiments of the stator structure; Figure 5 These are schematic diagrams of different embodiments of the stator structure; Figure 6 Front view of the stator structure; Figure 7A schematic diagram of an AC motor module for a fan; Figure 8 for Figure 7 Exploded view. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 6 As shown, this utility model provides a stator structure for an AC motor, including a stator body 1. The stator body 1 has a cavity 101 for assembling a mover 9. Four sets of stator teeth 11 are also provided on the outer side of the cavity 101 on the stator body 1. The four sets of stator teeth 11 are evenly distributed along the outer periphery of the cavity 101, and a winding cavity 12 is formed between adjacent sets of stator teeth 11. An opening 120 penetrating into the cavity 101 is also formed on the side wall of the winding cavity 12. This design, through optimized design, uses four sets of stator teeth surrounding the outer periphery of the mover cavity, with adjacent sets of stator teeth connected to the cavity via the winding cavity. This facilitates winding operations, and the evenly distributed four sets of stator teeth simplify the winding process and facilitate miniaturization. When using a winding device, it simplifies the winding process, completing the winding in one step, reducing the likelihood of winding errors, resulting in a high yield, reduced costs, and guaranteed product quality.

[0019] In addition, in this embodiment of the utility model, the optimized stator tooth structure simplifies the production process, increases output, reduces production costs by 20%, reduces labor costs by 40% compared to manual winding, and significantly improves production speed. Correspondingly, for production on winding equipment, the yield rate is high, raw material costs are saved by 40%, and production efficiency is increased by 20%.

[0020] In this embodiment of the present invention, the stator body 1 includes an outer frame 18 and an annular frame 19. The annular frame 19 is located inside the outer frame 18 and forms the cavity 101. The outer periphery of the annular frame 19 is connected to the outer frame 18 through the stator teeth 11. The opening 120 is formed on the annular frame 19. Preferably, the outer frame 18, the annular frame 19, and the stator teeth 11 in this embodiment are integrally formed.

[0021] like Figure 6As shown in this embodiment of the invention, in order to ensure that the winding meets the usage requirements, the width d of the stator tooth 11 is 1 / 3 to 1 / 4 of the width D of the stator body 1 on the same side. This appropriate width ensures that the usage requirements are met on a small-sized stator without resulting in insufficient winding space, while also facilitating winding. For example, in a stator body with a width D of 70mm, the width d of the stator tooth 11 is preferably 18mm to 22mm.

[0022] In addition, in this scheme, the stator teeth 11 include a first stator tooth group 11a and a second stator tooth group 11b. The first stator tooth group 11a consists of two oppositely distributed first stator teeth, and the second stator tooth group 11b consists of two oppositely distributed second stator teeth, with the first stator teeth and the second stator tooth group 11b being adjacent to each other. The two sides of the first stator teeth are straight sides extending parallel from the annular frame 19 to the outer frame 18, and the two sides of the second stator teeth are oblique sides extending gradually from the annular frame 19 to the outer frame 18. By employing two stator tooth designs with slightly different shapes and their cross-arrangement, this layout design can improve energy efficiency, increase the starting torque of the motor, and enhance stability. In this scheme, preferably, the width of the two straight sides of the first stator teeth is maintained at 19mm, and the width of the two oblique sides of the second stator teeth satisfies a trapezoidal design with a minimum width d1 of 18mm and a maximum width d2 of 22mm.

[0023] Traditional motors, when operating for extended periods, gradually decrease in speed, leading to a rise in temperature. This increased temperature shortens the motor's lifespan and increases the risk of overheating, seizing, or burning out, rendering the motor unusable. This design addresses this issue by incorporating a magnetic leakage structure 3 on the stator teeth 11 near the cavity 101. This leakage structure allows magnetic flux to leak out during operation, increasing the magnetic torque between the rotor and stator, thus improving the stability of the motor's operating speed. Furthermore, with this leakage structure, the motor reaches a stable speed a few seconds faster than without it, experiences less speed drop during prolonged operation, maintains a more stable operating temperature, and has a longer lifespan.

[0024] like Figures 2 to 4 As shown, as one of the optional rather than limited embodiments of the leakage magnetic structure, the leakage magnetic structure 3 is a through hole structure that penetrates the front and rear sides of the stator tooth 11.

[0025] like Figure 5 As shown, as another embodiment of the leakage magnetic structure, which is optional but not limited, the leakage magnetic structure 3 is a guide groove structure that runs through the front and rear sides of the stator tooth 11 and has one side connected to the cavity 101.

[0026] Of course, each stator tooth 11 can be designed with at least a single through hole structure or guide groove structure, or 2 to 3 through hole structures or guide groove structures can be set on each stator tooth 11, and the leakage magnetic structure on the corresponding stator tooth 11 is also set relative to each other.

[0027] This utility model also provides an AC motor module for a fan, including the stator structure described above, a mover 91 disposed on the stator body 1, and a first bracket 92 and a second bracket 93 installed on the front and rear sides of the stator body 1. In this design, the first bracket 92 and the second bracket 93 are installed on the stator body 1 to form a motor mounting bracket. Taking the first bracket 92 as an example, the first bracket 92 is inserted into the inside of the winding cavity 12 through a plug-in portion 921 that mates with the winding cavity 12 for assembly. After installation, it forms a barrier 922 covering the front side of the stator teeth 11, preventing the wire assembly from being exposed.

[0028] This utility model also provides a fan, including a fan body, on which the aforementioned AC motor module is provided. Because of the use of the aforementioned AC motor module, the fan product also has the same beneficial effects.

[0029] This utility model provides a stator structure for an AC motor. Through optimized design, it adopts four sets of stator teeth surrounding the outer periphery of the mover cavity, and adjacent stator teeth are connected to the cavity through a winding cavity, which facilitates the winding operation. The four evenly distributed sets of stator teeth make the winding operation simpler and facilitate miniaturization design. When using winding equipment, it simplifies the winding process, resulting in a high yield and reduced costs.

[0030] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stator structure of an alternating current motor, characterized by comprising: The stator body (1) includes a cavity (101) for assembling a mover (9) on the stator body (1). Four sets of stator teeth (11) are also provided on the outside of the cavity (101) on the stator body (1). The four sets of stator teeth (11) are evenly distributed along the outer periphery of the cavity (101), and a winding cavity (12) is provided between two adjacent sets of stator teeth (11). An opening (120) penetrating into the cavity (101) is also provided on the side wall of the winding cavity (12).

2. An AC motor stator structure as set forth in claim 1, wherein The stator body (1) includes an outer frame (18) and an annular frame (19). The annular frame (19) is located inside the outer frame (18) and forms the cavity (101). The outer periphery of the annular frame (19) is connected to the outer frame (18) through the stator teeth (11). The opening (120) is opened on the annular frame (19).

3. The stator structure of an AC motor according to claim 2, characterized in that, The stator teeth (11) include a first stator tooth group (11a) and a second stator tooth group (11b). The first stator tooth group (11a) consists of two oppositely distributed first stator teeth, and the second stator tooth group (11b) consists of two oppositely distributed second stator teeth. The first stator teeth and the second stator tooth group (11b) are distributed adjacent to each other.

4. The stator structure of an AC motor according to claim 1, characterized in that, The width (d) of the stator tooth (11) is 1 / 3 to 1 / 4 of the width (D) of the stator body (1) on the same side.

5. The stator structure of an AC motor according to claim 3, characterized in that, The two sides of the first stator tooth are straight sides that extend parallel from the annular frame (19) to the outer frame (18), and the two sides of the second stator tooth are oblique sides that extend gradually from the annular frame (19) to the outer frame (18).

6. The stator structure of an AC motor according to claim 1, characterized in that, The stator tooth (11) is also provided with a magnetic leakage structure (3) on the side near the cavity (101).

7. The stator structure of an AC motor according to claim 6, characterized in that, The leakage magnetic structure (3) is a through hole structure that penetrates the front and rear sides of the stator tooth (11).

8. The stator structure of an AC motor according to claim 6, characterized in that, The leakage magnetic structure (3) is a guide groove structure that runs through the front and rear sides of the stator tooth (11) and one side is connected to the cavity (101).

9. An AC motor module for a fan, characterized in that, The stator structure includes any one of claims 1-8, a mover (91) disposed on the stator body (1), and a first bracket (92) and a second bracket (93) installed on the front and rear sides of the stator body (1).

10. A fan, characterized in that, It includes a fan body, on which the AC motor module as described in claim 9 is provided.

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