Stator punching sheet, motor with stator punching sheet and compressor with stator punching sheet

Abstract

The stator punching sheet comprises a punching sheet body, the punching sheet body comprises an annular yoke part and N tooth parts distributed along the circumferential direction of the yoke part, N is 6, 9 or 12, a winding groove is formed between adjacent tooth parts, the annular yoke part is provided with a gap part, and the gap part is provided with a gap. The central angle corresponding to the notch part is theta1, and theta1 is larger than or equal to 60 degrees and smaller than or equal to 90 degrees; the chord length corresponding to the notch part is W1, and the W1 is greater than or equal to 45mm and less than or equal to 65mm; according to the technical scheme of the utility model, the equal size proportion and the mutual relation of the groove type distribution angles of the tooth part, the yoke part and the winding groove are further optimized, so that the beneficial effects of improving the motor performance, reducing the material cost of the motor and reducing the overall height of the compressor are achieved.

Description

Technical Field

[0001] This utility model relates to the field of motor device technology, specifically to stator laminations and motors and compressors having them. Background Technology

[0002] In recent years, to increase the effective volume of refrigerator refrigeration and freezing compartments, more restrictions have been placed on the overall height of refrigerator compressors. For permanent magnet synchronous motors used in inverter compressors, the lamination design has evolved to include non-circular uniform distribution and designs with "notches," such as the evolution from the commonly used traditional 9 / 12 / 15 tooth circumferential uniform distribution to a 6 / 9 / 12 tooth non-circumferential uniform distribution, thereby avoiding interference with compressor components and achieving the goal of reducing the overall height of the compressor.

[0003] However, for stator laminations of permanent magnet synchronous motors with non-circularly distributed "notches," the reduction of 3 or 6 slots in the relative number of windings has a certain impact on motor performance. It is necessary to rationally design key elements such as stator slot shape, teeth, yoke, and notch size to ensure that motor performance meets requirements to the greatest extent possible. Utility Model Content

[0004] In view of the above-mentioned technical problems in related technologies, this utility model proposes a stator lamination and a motor and compressor having the same, which can overcome the above-mentioned deficiencies 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 type of stator lamination;

[0007] The stator lamination includes a lamination body, which includes an annular yoke and N teeth distributed along the circumference of the yoke, where N is 6, 9, or 12. A winding slot is formed between adjacent teeth. A notch is provided on one or both sides of the annular yoke, and the central angle corresponding to the notch is θ1, which is greater than or equal to 60 degrees and less than or equal to 90 degrees. The chord length corresponding to the notch is W1, which is greater than or equal to 45 mm and less than or equal to 65 mm.

[0008] Furthermore, the widest part of the tooth is T1, and the narrowest part of the tooth is T2, wherein 5.5mm ≤ T2 ≤ 8.5mm, and 1.0 ≤ T1 / T2 ≤ 1.4.

[0009] Furthermore, the inner radius of the lamination body is R1, and the radius of the winding slot is R2, wherein 28mm ≤ R1 ≤ 34mm, and 0.65 ≤ R1 / R2 ≤ 0.68.

[0010] Furthermore, the lateral distance between the yoke and the edge of the lamination body is Y1, and the longitudinal distance between the yoke and the edge of the lamination body is Y2, wherein 0.74 ≤ Y1 / T2 ≤ 0.78, and 0.45 ≤ Y2 / T2 ≤ 0.80.

[0011] Furthermore, the notch width of the yoke is Y3, where 0.6 ≤ Y3 / T2 ≤ 1.2.

[0012] Furthermore, the slot width of the winding slot is 2.8-3.2mm, and the slot depth is 1.2-2.4mm.

[0013] According to a second aspect of the present invention, an electric motor is also provided;

[0014] The motor includes the aforementioned stator laminations.

[0015] According to a third aspect of this utility model, a compressor is also provided.

[0016] The compressor includes the aforementioned motor.

[0017] The beneficial effects of this utility model are as follows: Through the technical solution of this utility model, the size ratios and interrelationships of the slot distribution angle of the teeth, yoke and winding slots are further optimized, thereby achieving the beneficial effects of improving motor performance, reducing motor material costs and reducing the overall height of the compressor. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the first embodiment of a stator lamination with 6 non-circularly evenly distributed teeth according to the present utility model.

[0020] Figure 2 This is a schematic diagram of a second embodiment of a stator lamination with 6 non-circularly evenly distributed teeth according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the third embodiment of a stator lamination with 6 non-circularly evenly distributed teeth according to the present utility model.

[0022] Figure 4 This is a schematic diagram of the structure of a first embodiment of a stator lamination with 9 teeth not circumferentially distributed according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the first embodiment of a stator lamination with 12 non-circularly evenly distributed teeth according to the present utility model.

[0024] In the diagram: 1. Lamination body; 2. Yoke; 3. Tooth; 4. Winding slot. Detailed Implementation

[0025] 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 skilled in the art are within the protection scope of the present utility model.

[0026] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0027] like Figure 1-5 As shown, a stator lamination according to an embodiment of the present invention includes a lamination body 1. The lamination body 1 includes an annular yoke 2 and N teeth 3 distributed along the circumference of the yoke 2, wherein N is 6, 9, or 12. A winding slot 4 is formed between adjacent teeth 3. A notch is provided on one or both sides of the annular yoke 2. The central angle corresponding to the notch is θ1, wherein θ1 is greater than or equal to 60 degrees and less than or equal to 90 degrees. The chord length corresponding to the notch is W1, wherein W1 is greater than or equal to 45 mm and less than or equal to 65 mm.

[0028] According to an embodiment of the present invention, in a specific embodiment, the widest part of the tooth 3 is T1, and the narrowest part of the tooth 3 is T2, wherein 5.5mm ≤ T2 ≤ 8.5mm, and 1.0 ≤ T1 / T2 ≤ 1.4.

[0029] According to an embodiment of the present invention, in a specific embodiment, the inner radius of the lamination body 1 is R1, and the radius of the winding slot 4 is R2, wherein 28mm ≤ R1 ≤ 34mm, and 0.65 ≤ R1 / R2 ≤ 0.68.

[0030] According to an embodiment of the present invention, in a specific embodiment, the yoke 2 is laterally spaced from the edge of the lamination body 1 by a dimension Y1, and the yoke 2 is longitudinally spaced from the edge of the lamination body 1 by a dimension Y2, wherein 0.74 ≤ Y1 / T2 ≤ 0.78 and 0.45 ≤ Y2 / T2 ≤ 0.80.

[0031] According to an embodiment of the present invention, in a specific embodiment, the notch width of the yoke 2 is Y3, wherein 0.6≤Y3 / T2≤1.2.

[0032] According to an embodiment of the present invention, in a specific embodiment, the width of the winding slot is 2.8-3.2 mm and the depth is 1.2-2.4 mm.

[0033] In addition, in a second aspect, this utility model also proposes an electric motor; the electric motor includes the aforementioned stator laminations.

[0034] According to a third aspect of the present invention, a compressor is also provided; the compressor includes the aforementioned motor.

[0035] 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.

[0036] In practical applications, based on the stator lamination described in this utility model, a stator lamination and a motor and compressor having the same are designed for this type of lamination with 6 / 9 / 12 teeth that are not evenly distributed circumferentially.

[0037] By optimizing the dimensional proportions and interrelationships of the teeth, yoke, and slot distribution angles, the goal is to improve motor performance, reduce motor material costs, and lower the overall height of the compressor.

[0038] Regarding this utility model Figure 1The following is a preferred design example, in which R1=33.1mm, T1=11.1 mm, T2=8.15mm, θ1=80°, and W1=56 mm.

[0039] Compared with the traditional 9-tooth circumferentially distributed lamination, this patented motor uses approximately 40% less enameled wire and approximately 5.8% less silicon steel, resulting in a reduction of 3.5~4.5 yuan per unit in overall material costs, while maintaining the same motor efficiency.

[0040] In summary, by utilizing the above-mentioned technical solution of this utility model, the dimensional proportions and interrelationships of the tooth, yoke, and winding slot distribution angles are further optimized, thereby achieving the beneficial effects of improving motor performance, reducing motor material costs, and lowering the overall height of the compressor.

[0041] 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 lamination characterized by, The stator lamination includes a lamination body (1) comprising an annular yoke (2) and N tooth portions (3) distributed along the circumference of the yoke (2), N being 6, 9 or 12, a winding slot (4) being formed between adjacent tooth portions (3), one side or both sides of the annular yoke (2) being provided with a notch portion, the corresponding central angle of the notch portion being θ1, θ1 being greater than or equal to 60 degrees and less than or equal to 90 degrees; the corresponding chord length of the notch portion being W1, W1 being greater than or equal to 45 mm and less than or equal to 65 mm.

2. A stator lamination according to claim 1, characterized in that The widest width of the tooth portion (3) is T1, and the narrowest width of the tooth portion (3) is T2, wherein 5.5 mm≤T2≤8.5 mm, and 1.0≤T1 / T2≤1.

4.

3. A stator lamination according to claim 1, wherein The inner radius of the lamination body (1) is R1, and the radius of the winding slot (4) is R2, wherein 28 mm≤R1≤34 mm, and 0.65≤R1 / R2≤0.

68.

4. A stator lamination according to claim 2, wherein The transverse distance of the yoke (2) from the edge of the lamination body (1) is Y1, and the longitudinal distance of the yoke (2) from the edge of the lamination body (1) is Y2, wherein 0.74≤Y1 / T2≤0.78, and 0.45≤Y2 / T2≤0.

80.

5. A stator lamination according to claim 4, wherein The width of the notch portion of the yoke (2) is Y3, wherein 0.6≤Y3 / T2≤1.

2.

6. A stator lamination according to claim 1, wherein The slot opening width of the winding slot is 2.8-3.2 mm, and the slot depth is 1.2-2.4 mm.

7. An electric machine characterized by The stator lamination according to any one of claims 1-6.

8. A compressor characterized by, The motor according to claim 7.

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