Permanent magnet synchronous motor stator iron core composed of special-shaped punching sheets and stator of permanent magnet synchronous motor stator iron core

Abstract

The stator core comprises a punching sheet 1, a punching sheet 2 and a punching sheet 3, the upper end of the punching sheet 1 is provided with the punching sheet 2, the lower end of the punching sheet 1 is provided with the punching sheet 3, the tooth parts of the punching sheet 2 are less than the tooth parts of the punching sheet 1, and the tooth parts of the punching sheet 2 are less than the tooth parts of the punching sheet 3. The plane structure of the third punching sheet is the same as the plane structure of the second punching sheet or the first punching sheet. According to the utility model, the number of the tooth parts of the special-shaped punching sheet 1 is reduced, so that the height of the enameled wire is lower than that of other coils, specifically, the heights of three of the nine tooth parts of the stator core are lower than that of other tooth parts, so that the height of the coil is lower than that of other coils; according to the technical scheme, the height of three or six of the twelve tooth parts of the stator core is lower than that of other tooth parts, so that the height of a coil at the position is lower than that of other coils, and through the technical scheme, compressor mechanism components such as an air cylinder seat can sink properly during design, so that the overall height of the compressor is reduced.

Description

Technical Field

[0001] This utility model relates to the field of stator core and stator technology, specifically to a permanent magnet synchronous motor stator core composed of irregularly shaped laminations and the stator thereof. Background Technology

[0002] The stator of the permanent magnet synchronous motor used in variable frequency compressors is generally composed of a stator core, a winding frame, an insulating slot bottom, enameled wire windings, and lead wire assemblies. Depending on the installation method of the winding frame, the stator core is mostly composed of one or two types of laminations stacked together, and the appearance and dimensions of the laminations are basically the same. Figure 13-14 The image shown is an example of a 9-tooth stator core in the prior art. Figure 13 The stator laminations one and two have different tooth and slot sizes, resulting in two types of laminations used for winding bobbin mounting; Figure 14 The two types of laminations differ in that they have additional mounting holes for the winding bobbin on the toothed part. Figure 15-16 This is an example of a 12-tooth stator core in the prior art. Figure 15 The stator laminations one and two have different tooth and slot dimensions, resulting in two types of laminations used for winding bobbin mounting; for example... Figure 16 The two types of laminations differ in that they have additional mounting holes for the winding bobbin on the toothed portion, which is why they are used for mounting the winding bobbin. For example... Figure 17 As shown, in existing permanent magnet synchronous stator cores, each tooth has the same height, and the number of turns of the enameled wire winding on the tooth is also the same. Therefore, as Figure 18 As shown, the height of the entire stator coil is basically the same. Therefore, when designing and assembling compressor components such as the cylinder base, they must be higher than the end face of the entire coil to ensure electrical safety distance, which limits the overall height of the compressor.

[0003] There is currently no effective solution to the above problems. Utility Model Content

[0004] In view of the above-mentioned technical problems in related technologies, this utility model proposes a permanent magnet synchronous motor stator core and stator composed of irregularly shaped laminations, which can overcome the above-mentioned shortcomings of the prior art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:

[0006] A stator core for a permanent magnet synchronous motor composed of irregularly shaped laminations includes lamination 1, lamination 2, and lamination 3. Lamination 2 is provided at the upper end of lamination 1, and lamination 3 is provided at the lower end of lamination 1. Lamination 2 has fewer teeth than lamination 1, and the planar structure of lamination 3 is the same as that of lamination 2 or lamination 1.

[0007] Furthermore, when the planar structure of the third lamination is the same as that of the second lamination, the positions of the missing teeth on the upper and lower ends of the second lamination correspond to each other.

[0008] Furthermore, when the first lamination has 9 teeth, the second lamination has 3 fewer teeth than the first lamination, and the three missing teeth are adjacent to each other.

[0009] Furthermore, the two-ring portion of the lamination is closed at the location lacking teeth.

[0010] Furthermore, the two-ring portion of the lamination is open at the location lacking teeth.

[0011] Furthermore, when the first lamination has 12 teeth, the second lamination has 3 or 6 fewer teeth than the first lamination, and the missing teeth are grouped together in groups of 3.

[0012] Furthermore, when the second lamination has six fewer teeth than the first lamination, each missing set of teeth in the second lamination is arranged opposite to the first lamination.

[0013] Furthermore, the two-ring portion of the lamination is closed at the location lacking teeth.

[0014] Furthermore, the two-ring portion of the lamination is open at the location lacking teeth.

[0015] A stator for a permanent magnet synchronous motor with a stator core composed of irregularly shaped laminations is assembled with the aforementioned stator core and a corresponding cylinder base.

[0016] The beneficial effects of this utility model are as follows: This utility model reduces the number of teeth on the irregularly shaped lamination to make the height of the enameled wire lower than that of other coils. Specifically, the height of 3 out of the 9 teeth on the stator core is lower than that of the other teeth, making the coil height at this location lower than that of other coils; the height of 3 or 6 out of the 12 teeth on the stator core is lower than that of the other teeth, making the coil height at this location also lower than that of other coils. Through this technical solution, the compressor mechanism components, such as the cylinder seat, can be appropriately lowered in design, thereby reducing the overall height of the compressor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the open assembly of the two rings of the laminations of the 9-tooth stator core of the permanent magnet synchronous motor composed of irregularly shaped laminations according to the embodiments of this utility model.

[0019] Figure 2 This is a three-dimensional schematic diagram of the open assembly of the two rings of the laminations of the 9-tooth stator core of the permanent magnet synchronous motor composed of irregularly shaped laminations according to the embodiments of this utility model.

[0020] Figure 3 This is a schematic diagram of the closed assembly of the two rings of the laminations of the 9-tooth stator core of the permanent magnet synchronous motor composed of irregularly shaped laminations according to the embodiments of this utility model.

[0021] Figure 4 This is a three-dimensional schematic diagram of the closed assembly of the two rings of the laminations of the 9-tooth stator core of the permanent magnet synchronous motor composed of irregularly shaped laminations according to the embodiments of this utility model.

[0022] Figure 5 This is a schematic diagram of the assembly of a 12-tooth stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to an embodiment of the present invention, wherein the laminations have two fewer than three teeth and the ring portion is open.

[0023] Figure 6 This is a three-dimensional schematic diagram of the assembly of a 9-tooth stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to an embodiment of the present invention, wherein the laminations have two fewer than 3 teeth and the ring portion is open.

[0024] Figure 7 This is a schematic diagram of the assembly of a 12-tooth stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to an embodiment of the present invention, wherein the laminations have two fewer than three teeth and the ring portion is closed.

[0025] Figure 8 This is a three-dimensional schematic diagram of a 9-tooth stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations, wherein the laminations have two fewer than 3 teeth and the ring portion is closed and assembled according to an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the assembly of a 12-tooth stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations, with two laminations having fewer than 6 teeth and an open ring, according to an embodiment of the present invention.

[0027] Figure 10 This is a three-dimensional schematic diagram of the assembly of a 9-tooth stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to an embodiment of the present invention, wherein the laminations have two fewer than 6 teeth and the ring portion is open.

[0028] Figure 11This is a schematic diagram of the assembly of a 12-tooth stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations, with two laminations having 6 fewer teeth and a closed ring, according to an embodiment of the present invention.

[0029] Figure 12 This is a three-dimensional schematic diagram of a 9-tooth stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations, wherein the laminations have 6 fewer teeth and the ring is closed and assembled according to an embodiment of the present invention.

[0030] Figure 13 This is a schematic diagram of a stator core with 9 teeth composed of two types of laminations with different slots, according to an embodiment of the present invention.

[0031] Figure 14 This is a schematic diagram of a stator core with 9 teeth, according to an embodiment of the present invention, composed of two types of laminations with different tooth sections.

[0032] Figure 15 This is a schematic diagram of a stator core with 12 teeth composed of two types of laminations with different tooth sections, according to an embodiment of the present invention.

[0033] Figure 16 This is a schematic diagram of a stator core with 12 teeth composed of two types of laminations with different tooth sections, according to an embodiment of the present invention.

[0034] Figure 17 This is a schematic diagram of a 9-tooth stator according to an embodiment of the present invention;

[0035] Figure 18 This is a schematic diagram of the assembly of a compressor stator and cylinder block according to the prior art described in the embodiments of this utility model;

[0036] In the diagram: 1. Lamination 1; 2. Lamination 2; 3. Lamination 3; 4. Slot; 5. Gear; 6. Enamelled wire winding; 7. Winding frame; 8. Custom iron core; 9. Cylinder seat; 10. Stator assembly; 11. A safety distance H is maintained between the cylinder seat and the coil. Detailed Implementation

[0037] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0038] like Figure 1-12As shown in the embodiment of the present invention, a stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations includes lamination 1, lamination 2, and lamination 3. Lamination 2 is provided at the upper end of lamination 1, and lamination 3 is provided at the lower end of lamination 1. Lamination 2 has fewer teeth than lamination 1, and the planar structure of lamination 3 is the same as that of lamination 2 or lamination 1.

[0039] When the planar structure of the third stamping 3 is the same as that of the second stamping 2, the positions of the missing teeth on the upper and lower ends of the second stamping 2 correspond to each other.

[0040] In Example 1, as Figure 1-4 As shown, when the first lamination 1 has 9 teeth, the second lamination 2 has 3 fewer teeth than the first lamination 1, and the three missing teeth are adjacent to each other. The ring portion of the second lamination 2 is either closed or open at the location where the teeth are missing.

[0041] In Example 2, as Figure 5-12 As shown, when the lamination 1 has 12 teeth, the lamination 2 has 3 or 6 fewer teeth than the lamination 1, and the missing teeth are grouped together in groups of 3. When the lamination 2 has 6 fewer teeth than the lamination 1, each group of missing teeth in the lamination 2 is arranged opposite to each other. The ring portion of the lamination 2 is either closed or open at the location of the missing teeth.

[0042] A stator for a permanent magnet synchronous motor with a stator core composed of irregularly shaped laminations is assembled with the aforementioned stator core and a corresponding cylinder base.

[0043] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0044] In practical use, according to the permanent magnet synchronous motor stator core composed of irregularly shaped laminations described in this utility model, when lamination one has 9 teeth, the height of the coil is reduced by reducing the adjacent 3 teeth of lamination two, and the safe distance H between it and the cylinder seat is increased, providing space for reducing the height of the cylinder seat, thereby reducing the overall height of the compressor. Moreover, the ring part of lamination two can be open or closed in the position where the teeth are missing.

[0045] When the first lamination has 12 teeth, by reducing 3 or 6 teeth of the second lamination, with each group of three teeth, the height of the coil is reduced, and the safe distance H between the coil and the cylinder seat is increased, providing space to reduce the height of the cylinder seat, thereby reducing the overall height of the compressor. Moreover, the ring of the second lamination can be open or closed in the position where the teeth are missing.

[0046] Of course, when the stator core lamination one has 15 teeth, the coil height of lamination two with 3, 6, or 9 teeth can also be reduced, thus lowering the coil height at this point. The laminations can also be slightly modified to create 3-4 similar laminations forming the corresponding stator core.

[0047] In summary, by utilizing the above-mentioned technical solution of this utility model, the height of the enameled wire is lower than that of other coils by reducing the number of teeth on the irregularly shaped lamination. Specifically, the height of 3 out of the 9 teeth on the stator core is lower than that of the other teeth, making the coil height at this location lower than that of other coils; the height of 3 or 6 out of the 12 teeth on the stator core is lower than that of the other teeth, making the coil height at this location also lower than that of other coils. Through this technical solution, the compressor mechanism components, such as the cylinder seat, can be appropriately lowered in design, thereby reducing the overall height of the compressor.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stator core for a permanent magnet synchronous motor composed of irregularly shaped laminations, characterized in that, It includes a first stamp (1), a second stamp (2) and a third stamp (3). The upper end of the first stamp (1) is provided with the second stamp (2), and the lower end of the first stamp (1) is provided with the third stamp (3). The second stamp (2) has fewer teeth than the first stamp (1). The planar structure of the third stamp (3) is the same as that of the second stamp (2) or the first stamp (1).

2. The stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to claim 1, characterized in that, When the planar structure of the third stamping (3) is the same as that of the second stamping (2), the positions of the missing teeth on the upper and lower ends of the second stamping (2) correspond to each other.

3. The stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to any one of claims 1-2, characterized in that, When the first stamping (1) has 9 teeth, the second stamping (2) has 3 fewer teeth than the first stamping (1), and the three missing teeth are adjacent to each other.

4. The stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to claim 3, characterized in that, The ring portion of the second (2) stamping is closed at the position where the teeth are missing.

5. The stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to claim 3, characterized in that, The ring portion of the second (2) lamination is open at the position where the teeth are missing.

6. The stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to any one of claims 1-2, characterized in that, When the first stamping (1) has 12 teeth, the second stamping (2) has 3 or 6 fewer teeth than the first stamping (1), and the missing teeth are grouped together in groups of 3.

7. The stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to claim 6, characterized in that, When the number of teeth in the second (2) of the stamping is six less than the number of teeth in the first (1) of the stamping, each set of missing teeth in the second (2) of the stamping is arranged opposite to each other.

8. The stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to claim 7, characterized in that, The ring portion of the second (2) stamping is closed at the position where the teeth are missing.

9. The stator core of a permanent magnet synchronous motor composed of irregularly shaped laminations according to claim 7, characterized in that, The ring portion of the second (2) lamination is open at the position where the teeth are missing.

10. A stator for a permanent magnet synchronous motor stator core composed of irregularly shaped laminations, characterized in that, Assemble the stator core according to any one of claims 1-9 with the corresponding cylinder base.

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