Capacitor operation single-phase asynchronous motor and punching sheet thereof

Abstract

The utility model provides a capacitor operation single-phase asynchronous motor and a punching sheet thereof, the stator punching sheet comprises a yoke portion ring body composed of an outer circle fixing frame and an outer winding iron core frame, and a plurality of tooth grooves matched with tooth root portions are arranged on the inner side of the outer circle fixing frame at intervals along the circumferential direction. The stator teeth are fixedly installed on the tooth grooves through the tooth root portions, so that detachable installation of the outer winding iron core frame and the outer circle fixing frame is achieved, rapid disassembly and reinstallation of the stator punching sheet are facilitated, the maintenance cost and the production cost are reduced, meanwhile, accurate installation and adjustment of the stator teeth in the production process are facilitated, and the production efficiency is improved. And the processing and installation precision and stability of the stator punching sheet are improved. In addition, the stator teeth are uniformly distributed along the circumferential direction of the inner side of the outer circle fixing frame, and the stator slots are formed between the adjacent stator teeth and the inner side of the outer circle fixing frame, so that uniform distribution of a magnetic field is facilitated, magnetic resistance is reduced, and the operation efficiency of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a capacitor-operated single-phase asynchronous motor and a punching plate thereof. Background Art

[0002] The stator is the stationary part of a motor or generator, whose primary function is to generate a rotating magnetic field. The stator consists of three parts: the stator core, the stator winding, and the frame. Stator windings can be divided into two types: centralized winding and distributed winding, depending on the coil shape and mounting wiring method.

[0003] Currently, the stator windings of conventional capacitor-operated single-phase asynchronous motors are mostly distributed windings, using distributed stator laminations. However, distributed windings require coils to be distributed across multiple slots in the stator, and a large number of winding coils are required to cover the entire stator. This makes the overall structure of the distributed stator laminations relatively complex, resulting in high production costs and inconvenient installation and removal. Therefore, it is necessary to provide an externally wound centralized stator lamination to replace the original distributed stator laminations for use in capacitor-operated single-phase asynchronous motors. Utility Model Content

[0004] Aiming at the technical problems in the prior art that the overall structure of distributed stator punchings is relatively complex, the production cost is high, and the installation and disassembly are relatively inconvenient, the utility model provides a capacitor-operated single-phase asynchronous motor and its punchings.

[0005] A capacitor-operated single-phase asynchronous motor punching sheet, comprising a rotor punching sheet and a stator punching sheet that can be sleeved outside the rotor punching sheet; the center of the rotor punching sheet is provided with an axial hole and a plurality of slots, and the slots are evenly arranged around the outer circumference of the axial hole; the stator punching sheet comprises a yoke ring body, the yoke ring body comprises an outer circular fixing frame and an outer winding core frame that can be detachably mounted on the inner side of the outer circular fixing frame; the outer winding core frame comprises a plurality of stator teeth extending inwardly along the radial direction of the outer circular fixing frame, and the stator teeth are evenly distributed along the circumference of the inner side of the outer circular fixing frame; adjacent A stator slot is formed between the two stator teeth and the inner side of the outer circular fixing frame; the stator teeth include a claw portion, a waist portion and a root portion connected in sequence along the direction close to the outer circular fixing frame, and a plurality of claw portions are evenly distributed along the circumference of the inner side of the outer circular fixing frame and form a center hole, and the stator punching sheet is sleeved on the rotor punching sheet through the center hole; a plurality of positioning grooves are provided on the outer circumferential side of the outer circular fixing frame, and a plurality of tooth grooves are provided on the inner side of the outer circular fixing frame at intervals along the circumferential direction to cooperate with the tooth root portion, and the stator teeth are fixedly mounted on the tooth grooves through the tooth root portion.

[0006] Furthermore, the inner diameter of the opening of the tooth groove is larger than the inner diameter of the end of the tooth groove away from the opening, and the inner side wall of the tooth groove is provided with a block portion, and the outer side wall of the tooth root is provided with a groove portion matching the block portion.

[0007] Furthermore, the vertical cross-section of the stator teeth is T-shaped, the number of the stator teeth is 8, and the number of the slots is 34.

[0008] Furthermore, a rectangular marking groove is provided on each tooth waist, and the length of the rectangular marking groove is 3.5 mm and the width is 1 mm.

[0009] Furthermore, a notch is provided on the stator slot, and the width of the notch is 4 mm.

[0010] Furthermore, the thickness of the stator punching sheet is 0.5 mm; the width of the tooth waist is 9±0.02 mm; the slot height of the stator slot is 11.7 mm; the outer diameter of the yoke ring body is 94 mm to 94.06 mm, and the inner diameter is 56 mm to 56.03 mm; the inner diameter of the outer circular fixing frame is 81 to 81.03 mm.

[0011] Furthermore, the width of the slotted hole on a side close to the shaft hole is greater than the width of the slotted hole on a side away from the upper shaft hole.

[0012] Furthermore, the diameter of the rotor punching is 56 mm; the diameter of the shaft hole is 8 mm; and the length of the slot hole is 10.25±0.02 mm.

[0013] Furthermore, the rotor punchings are cast aluminum rotor punchings.

[0014] The utility model also provides a capacitor-operated single-phase asynchronous motor, comprising a capacitor-operated single-phase asynchronous motor punching sheet as described in any one of the above items.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a stator lamination for a capacitor-operated single-phase asynchronous motor, comprising a stator lamination and a rotor lamination, wherein the stator lamination comprises a yoke ring body composed of an outer cylindrical fixing frame and an outer winding iron core frame, wherein a plurality of tooth slots are provided on the inner side of the outer cylindrical fixing frame at intervals along the circumferential direction and in cooperation with the tooth root portion, so that the stator teeth are fixedly mounted on the tooth slots through the tooth root portion, thereby realizing detachable mounting of the outer winding iron core frame and the outer cylindrical fixing frame, facilitating rapid disassembly and reinstallation of the stator lamination, reducing maintenance and production costs, and facilitating precise mounting and adjustment of the stator teeth during production, thereby improving machining, mounting accuracy, and stability of the stator lamination. In addition, the stator teeth are evenly distributed along the circumferential direction of the inner side of the outer cylindrical fixing frame, and stator slots are formed between adjacent stator teeth and the inner side of the outer cylindrical fixing frame, thereby facilitating uniform distribution of the magnetic field, reducing magnetic resistance, and improving the operating efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A schematic structural diagram of a stator lamination for a capacitor-operated single-phase asynchronous motor provided in Example 1 of the present utility model;

[0017] Figure 2 A schematic diagram of the structure of the outer circular fixing frame provided in Example 1 of the present utility model;

[0018] Figure 3 A schematic diagram of the stator tooth structure provided in Example 1 of the present utility model;

[0019] Figure 4 A schematic diagram of the three-dimensional structure of a stator core with stacked stator punchings provided in Example 1 of the present utility model;

[0020] Figure 5 A schematic diagram of the planar structure of a stator punching sheet provided in Example 2 of the present utility model;

[0021] Figure 6 This is a schematic diagram of the planar structure of the stator punching provided in Example 3 of the present utility model.

[0022] Figure ID

[0023] 1. Rotor punching sheet; 11. Shaft hole; 12. Slot hole; 2. Stator punching sheet; 21. Yoke ring; 22. Outer circle fixing frame; 23. Outer winding core frame; 24. Stator teeth; 241. Tooth claw part; 242. Tooth waist part; 243. Tooth root part; 2431. Groove part; 25. Stator slot; 251. Notch; 26. Center hole; 27. Positioning groove; 28. Tooth groove; 281. Block part; 3. Rectangular marking groove. DETAILED DESCRIPTION

[0024] To help those skilled in the art better understand the present invention, the present invention is further described in detail below with reference to the accompanying drawings. The embodiments described herein are merely a portion of the present invention, not all of the present invention. All other embodiments derived by those skilled in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] refer to Figure 1 and Figure 4 As shown, a capacitor-operated single-phase asynchronous motor lamination comprises a rotor lamination 1 and a stator lamination 2 that can be sleeved over the rotor lamination 1. Multiple rotor laminations 1 can be stacked to form a rotor core; multiple stator laminations 2 can be stacked to form a stator core. In this embodiment, the stator lamination 2 is 0.5 mm thick.

[0026] Specifically, refer to Figure 1As shown, the rotor punching 1 is centrally provided with an axial hole 11 and a plurality of slots 12, which are evenly arranged around the outer periphery of the axial hole 11. The width of the slots 12 on the side closest to the axial hole 11 is greater than the width on the side away from the upper axial hole 11. In this embodiment, the rotor punching 1 is a cast aluminum rotor punching 1; the diameter of the rotor punching 1 is 56 mm; the diameter of the axial hole 11 is 8 mm; there are 34 slots 12, and the length of each slot 12 is 10.25 ± 0.02 mm.

[0027] The slots 12 are arranged evenly around the outer periphery of the shaft hole 11 , which helps to evenly distribute the current in the rotor, thereby optimizing the distribution of the magnetic field, reducing the distortion of the magnetic field, and improving the electromagnetic conversion efficiency of the motor.

[0028] refer to Figure 1 、 Figure 2 As shown, the stator lamination 2 includes a yoke ring 21, which includes an outer cylindrical retainer 22 and an outer winding core frame 23 detachably mounted on the inner side of the outer cylindrical retainer 22. In this embodiment, the outer diameter of the yoke ring 21 is 94 mm to 94.06 mm, and the inner diameter is 56 mm to 56.03 mm; the inner diameter of the outer cylindrical retainer 22 is 81 mm to 81.03 mm.

[0029] Among them, reference Figure 1 and Figure 3 As shown, the outer winding core frame 23 includes a plurality of stator teeth 24 extending radially inward from the outer cylindrical retainer 22. These stator teeth 24 are evenly distributed along the inner circumference of the outer cylindrical retainer 22. A stator slot 25 is formed between two adjacent stator teeth 24 and the inner side of the outer cylindrical retainer 22. In this embodiment, the slot height of each stator slot 25 is 11.7 mm. The vertical cross-section of each stator tooth 24 is T-shaped, and there are eight stator teeth 24.

[0030] The stator teeth 24 are evenly distributed along the inner side of the outer cylindrical fixing frame 22 , and stator slots 24 are formed between adjacent stator teeth 22 and the inner side of the outer cylindrical fixing frame 22 , which is beneficial to the uniform distribution of the magnetic field, reduces magnetic resistance, and improves the operating efficiency of the motor.

[0031] The stator teeth 24 include a claw portion 241, a waist portion 242, and a root portion 243, which are connected in sequence along the direction close to the outer cylindrical fixing frame 22. Several claw portions 241 are evenly distributed along the inner circumference of the outer cylindrical fixing frame 22 and form a center hole 26. The stator punching 2 is mounted on the rotor punching 1 through this center hole 26. The width of the waist portion 242 is 9±0.02mm.

[0032] The outer circumferential side of the outer circular fixing frame 22 is provided with a plurality of positioning grooves 27 , and the inner side of the outer circular fixing frame 22 is provided with a plurality of tooth grooves 28 arranged to cooperate with the tooth root portion 243 at intervals along the circumferential direction. The stator teeth 24 are fixedly mounted on the tooth grooves 28 through the tooth root portion 243 .

[0033] By arranging a plurality of tooth grooves 28 that are arranged in cooperation with the tooth root portions 243 at intervals along the circumferential direction on the inner side of the outer circular fixing frame 22, the stator teeth 24 are fixedly mounted on the tooth grooves 28 through the tooth root portions 243, thereby realizing the detachable installation of the outer winding core frame 23 and the outer circular fixing frame 22, which is conducive to the rapid disassembly and reinstallation of the stator punching 2, reduces maintenance costs and production costs, and facilitates the precise installation and adjustment of the stator teeth 24 during the production process, thereby improving the processing, installation accuracy and stability of the stator punching 2.

[0034] The inner diameter of the opening of the tooth groove 28 is larger than the inner diameter of the end of the tooth groove 28 away from the opening, and the inner wall of the tooth groove 28 is provided with a block portion 281, and the outer wall of the tooth root portion 243 is provided with a groove portion 2431 matching the block portion 281.

[0035] Each tooth waist 242 is provided with a rectangular marking groove 3, which is 3.5 mm long and 1 mm wide. The rectangular marking groove 3 can mark the stator punching 25, facilitating accurate stacking of the stator punching 251 during lamination, thereby improving the efficiency and quality of the lamination process.

[0036] Example 2

[0037] refer to Figure 5 As shown, compared with embodiment 1, embodiment 3 is different in that a notch 251 is provided on the stator slot 25 , and the width of the notch is 4 mm.

[0038] Example 3

[0039] refer to Figure 4 As shown, compared with Example 1, the difference of Example 3 is that the outer circle fixing frame 22 and the outer winding core frame 23 are integrally formed, and a notch 251 is provided on the stator slot 25, and the width of the notch is 4 mm.

[0040] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention and are not intended to limit the present invention to the specific embodiments described. Obviously, other modifications and variations may be made based on the contents of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. They are not intended to limit the present invention, and any simple variations of the present invention fall within the scope of protection of the present invention.

Claims

1. A capacitor-operated single-phase asynchronous motor lamination, comprising a rotor lamination and a stator lamination that can be sleeved outside the rotor lamination; characterized in that: The center of the rotor punching is provided with an axial hole and a plurality of slots, and the slots are evenly arranged around the outer periphery of the axial hole; The stator punching sheet includes a yoke ring body, and the yoke ring body includes an outer circle fixing frame and an outer winding core frame detachably mounted on the inner side of the outer circle fixing frame; The outer winding core frame includes a plurality of stator teeth extending inwardly along the radial direction of the outer circular fixing frame, and the stator teeth are evenly distributed along the circumference of the inner side of the outer circular fixing frame; a stator slot is formed between two adjacent stator teeth and the inner side of the outer circular fixing frame; The stator teeth include claw portions, waist portions, and root portions sequentially connected in a direction close to the outer cylindrical fixing frame. The claw portions are evenly distributed along the inner circumference of the outer cylindrical fixing frame and form a center hole. The stator punchings are sleeved on the rotor punchings through the center hole. The outer circumferential side of the outer circle fixing frame is provided with a plurality of positioning grooves, and the inner side of the outer circle fixing frame is provided with a plurality of tooth grooves that cooperate with the tooth root portion at intervals along the circumferential direction, and the stator teeth are fixedly mounted on the tooth grooves through the tooth root portion.

2. A capacitor-operated single-phase asynchronous motor punching lamination according to claim 1, characterized in that: The inner diameter of the opening of the tooth groove is larger than the inner diameter of the end of the tooth groove away from the opening, and the inner side wall of the tooth groove is provided with a block portion, and the outer side wall of the tooth root is provided with a groove portion matching the block portion.

3. A capacitor-operated single-phase asynchronous motor punching lamination according to claim 1, characterized in that: The vertical cross-section of the stator teeth is T-shaped, the number of the stator teeth is 8, and the number of the slots is 34.

4. A capacitor-operated single-phase asynchronous motor punching lamination according to claim 1, characterized in that: A rectangular marking groove is provided on each tooth waist, and the length of the rectangular marking groove is 3.5 mm and the width is 1 mm.

5. A capacitor-operated single-phase asynchronous motor punching lamination according to claim 1, characterized in that: The stator slot is provided with a notch.

6. A capacitor-operated single-phase asynchronous motor punching lamination according to claim 1, characterized in that: The thickness of the stator punching sheet is 0.5mm; the width of the tooth waist is 9±0.02mm, and the slot height of the stator slot is 11.7mm; the outer diameter of the yoke ring body is 94mm to 94.06mm, and the inner diameter is 56mm to 56.03mm; the inner diameter of the outer circular fixing frame is 81 to 81.03mm.

7. A capacitor-operated single-phase asynchronous motor punching lamination according to claim 1, characterized in that: The width of the slotted hole at a side close to the shaft hole is greater than the width of the slotted hole at a side away from the upper shaft hole.

8. The capacitor-operated single-phase asynchronous motor punching lamination according to claim 1, characterized in that: The diameter of the rotor punching is 56 mm; the diameter of the shaft hole is 8 mm; and the length of the slot hole is 10.25±0.02 mm.

9. A capacitor-operated single-phase asynchronous motor punching lamination according to claim 1, characterized in that: The rotor punchings are cast aluminum rotor punchings.

10. A capacitor-operated single-phase asynchronous motor, characterized in that: It comprises a capacitor-operated single-phase asynchronous motor punching sheet as described in any one of claims 1-9.

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