Stator core of compressor motor

Abstract

The utility model discloses a stator iron core of a compressor motor, which comprises an iron core body, the diameter of the outer edge of the iron core body is smaller than the inner diameter of a compressor shell, a diameter expanding part is integrally formed on the peripheral side of the iron core body, and the iron core body is directly arranged in the compressor shell through the diameter expanding part. After the technical scheme is adopted, the stator iron core assembly is simple in structure and high in integration degree, and ferrule processing, sheet metal part processing and welding operations which need to be separately configured with the iron core body in the stator iron core assembly in the prior art are saved.

Description

Technical Field

[0001] This utility model belongs to the field of compressor motor technology, specifically relating to a stator core of a compressor motor. Background Technology

[0002] Please see Figure 12 , 13 As shown in Figure 14, the existing stator core assembly consists of a core body 1', a collar 2', and a sheet metal part 3'. The core body 1' is formed by stacking multiple laminations, with a first sidewall 11' and a second sidewall 12' on its outer periphery; the collar 2' has four weld filling holes 20'. Figure 12 Only one is visible); the two ends of the four sheet metal parts 3' have weld feet 32 ​​and arched portions 31 for transition connecting weld feet, respectively. The collar 2' is loosely fitted around the outer periphery of the iron core body 1', and the collar 2' is welded to both the iron core body 1' and the sheet metal parts 3' to form a stator iron core assembly, which is press-fitted into the compressor housing.

[0003] A careful analysis of the above stator core assembly reveals the following technical shortcomings:

[0004] The stator core body 1', the collar 2', and the sheet metal part 3' are separate structures and need to be processed and formed separately. Specifically, the collar 2', made of 3mm thick A3 steel, requires sequential blanking, rounding, drilling, welding, and slag removal processes; the sheet metal part 3', made of 7mm thick A3 steel, requires bending, welding, slag removal, and turning to a full circle process. It can be seen that the stator core assembly has a long processing time, high cost, and high defect rate. Utility Model Content

[0005] This utility model addresses the shortcomings of the existing technology by providing a compressor motor stator core with a simplified structure and a high degree of integration.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] The stator core of the compressor motor includes the core body. The outer diameter of the core body is smaller than the inner diameter of the compressor housing. The improvement is that an expanded diameter section is integrally formed on the outer periphery of the core body, and the core body is directly installed into the compressor housing through the expanded diameter section.

[0008] The aforementioned expanded diameter section is circumferentially closed.

[0009] The aforementioned diameter-expanding sections are arranged at circumferential intervals.

[0010] There are at least two circumferentially spaced expansion sections.

[0011] The aforementioned circumferentially spaced expansion sections are 3, 4, 6, or 8 in number.

[0012] The technical advantages of this utility model are as follows: Compared with the prior art, it eliminates the need for a separate collar from the traditional iron core body, as well as the need for rounding the existing collar and filling the weld seam holes on the side wall, thus saving the welding operation between the collar and the existing iron core body; it also eliminates the need for separate bending and forming of existing sheet metal parts, and correspondingly eliminates the need for welding existing sheet metal parts to the collar, instead directly forming and expanding the diameter of the iron core body, thereby achieving high-efficiency fixed installation with the compressor housing. In addition, it also saves the need to remove weld slag after two welding operations and the post-weld rounding machining operation of the sheet metal parts in the existing structure.

[0013] In summary, the expanded diameter section of this utility model is integrally formed with the iron core body and can be directly installed with the compressor housing. Compared with the existing structure, it overcomes the inefficient auxiliary operations required before installation, such as additional processing and welding of the separate parts rings after the iron core body is manufactured, additional processing and welding of the separate sheet metal parts, and machining of the whole circle after welding. Attached Figure Description

[0014] Figure 1 This is an end view of Embodiment 1 of this utility model;

[0015] Figure 2 yes Figure 1 A three-dimensional image;

[0016] Figure 3 This is an end view of Embodiment 2 of this utility model;

[0017] Figure 4 yes Figure 3 A three-dimensional image;

[0018] Figure 5 This is an end view of embodiment 3 of this utility model;

[0019] Figure 6 yes Figure 5 A three-dimensional image;

[0020] Figure 7 This is a cross-sectional view of Embodiment 4 of this utility model;

[0021] Figure 8 yes Figure 7 End face view;

[0022] Figure 9 yes Figure 8 A three-dimensional image;

[0023] Figure 10 This is an end view of embodiment 5 of the present invention;

[0024] Figure 11 yes Figure 10 A three-dimensional image;

[0025] Figure 12 This is an exploded view of the existing stator core assembly;

[0026] Figure 13 This is a diagram of the end face of an existing stator core assembly;

[0027] Figure 14 This is a 3D view of the existing stator core assembly. Detailed Implementation

[0028] Please see Figures 1-11 As shown, the stator core of the compressor motor includes a core body 1. The outer diameter of the core body 1 is smaller than the inner diameter of the compressor housing. The improvement is that an expansion portion is integrally formed on the outer periphery of the core body 1. The core body 1 is directly press-fitted to the inner wall of the compressor housing (a conventional part is not shown) through the expansion portion.

[0029] Please see Figure 1 , 2 The enlarged diameter section 100 is a circumferentially closed structure, or the enlarged diameter sections are arranged in a circumferentially spaced manner (see...). Figures 3-11 (As shown). The outer walls of the circumferentially spaced expansion sections lie on the same concentric circle. To save on the amount of silicon steel sheets and reduce the weight of the stator core, the expansion sections are located between the two end faces of the core body 1. Furthermore, the axial height of the expansion sections accounts for 1 / 2 to 1 / 3 of the stack height of the core body 1, and is generally located in the middle of the stack height of the core body 1, thereby saving and optimizing the internal space of the compressor housing.

[0030] There are no fewer than two (≥2) circumferentially spaced expansion sections. In specific implementation, the number is adjusted according to the tightness requirements between the iron core body 1 and the compressor housing, such as depending on the outer diameter of the iron core body 1.

[0031] Please see Figure 1 , 3 5, 8, 10, the iron core body 1 is conventional, including a first sidewall 11 arranged opposite to each other and a second sidewall 12 arranged opposite to each other (in the direction of feeding silicon steel strip). Figure 3 , 8 Four arc-shaped surfaces 10 are marked at intervals, and each arc-shaped surface 10 is connected to the adjacent first sidewall 11 and second sidewall 12 through a weld groove (not marked in the existing structure); Figure 5 The circumcircle of the iron core body is shown; however, other figures are not drawn. Furthermore,

[0032] Please see Figures 3-4 Two diameter-expanding portions 100-1 are arranged at intervals, and the diameter-expanding portions 100-1 are located on the arc-shaped surface 10; or four diameter-expanding portions 100-1 are arranged at intervals, and the diameter-expanding portions 100-1 are located on the arc-shaped surface 10 (see...). Figures 7-9To reduce external scrap (process scrap) of the stator core, the expanded diameter section 100-1 is located within the space P enclosed by the extension plane of the first side wall 11 and the extension plane of the second side wall 12. Therefore, the generation of scrap is reduced when the progressive die punches the laminations. That is, the part of the lamination that originally generated scrap is formed into an expanded diameter section, and the part of the scrap that is effectively utilized is formed together with the lamination body to form a shaped lamination. After the laminations are stacked to form the stator core, the expanded diameter section is formed into an expanded diameter section. The stacked laminations are welded together to form the stator core.

[0033] Please see Figures 5-6 There are 3 expansion sections 100-1 spaced apart.

[0034] Please see Figures 10-11 The diameter expansion section 100-1 has 8 sections spaced apart. An additional 6 sections can also be spaced apart, but not shown in the figure.

Claims

1. A stator core for a compressor motor, comprising a core body, wherein the outer diameter of the core body is smaller than the inner diameter of the compressor housing, characterized in that... The outer periphery of the iron core body has an integrally formed enlarged section, through which the iron core body is directly installed into the compressor housing.

2. The stator core of the compressor motor according to claim 1, characterized in that: The enlarged section is circumferentially closed.

3. The stator core of the compressor motor according to claim 1, characterized in that: The diameter-expanding sections are arranged at circumferential intervals.

4. The stator core of the compressor motor according to claim 3, characterized in that: There are at least two circumferentially spaced expansion sections.

5. The stator core of the compressor motor according to claim 4, characterized in that: The number of circumferentially spaced expansion sections is 3, 4, 6, or 8.

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