Motor stator and rotor lamination for a blender

Abstract

The utility model discloses a motor stator lamination for mixer, through adopting the stator of block design, is engaged by the tooth groove of two ends to the stator tooth lamination of a plurality of same stator again axial laminated and forms the whole stator. The shape of single stator tooth lamination is simple, and the cost of opening mould is lower, and the die life is longer, is favorable to large -scale production, and production speed is fast, can reach more than 85% slot fill factor of block design, and higher slot fill factor can have lower copper consumption, so that motor efficiency is higher, especially in low -speed big torque motor application is more obvious. Rotor lamination can prevent the magnetic steel from the action of centrifugal force due to motor operation and axial loosening through dovetail groove -like magnetic steel slot, through the semicircular groove of the bottom of magnetic steel slot, through the surplus magnetic steel glue of storage, so that the close of magnetic steel and magnetic steel slot is more close. Its simple structure, convenient to use, under the condition of reaching the requirement, to small volume small weight low cost, has very strong practicality and extensive applicability.

Description

Technical Field

[0001] This utility model relates to a stator and rotor lamination for an electric motor, specifically a stator and rotor lamination for a mixer motor, belonging to the field of electric motor technology. Background Technology

[0002] Motors used in mixers typically operate under low-speed, high-torque conditions. They require high efficiency, generally exceeding the national standard for first-level energy efficiency. However, copper consumption is relatively high during low-speed, high-torque operation.

[0003] Therefore, it is necessary to provide a new type of stator and rotor laminations for mixer motors to reduce copper consumption and improve motor efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a stator and rotor lamination for a mixer motor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A stator and rotor lamination for a mixer motor, wherein the stator lamination is formed by sequentially splicing several T-shaped stator tooth laminations through interlocking tooth slots and interlocking teeth on both sides, and several stator laminations are axially stacked to form a stator; Along the circumferential direction, the surface of the rotor laminations is provided with several magnetic grooves; the magnetic grooves are dovetail grooves; several rotor laminations are axially stacked to form a rotor core.

[0006] The aforementioned stator tooth lamination has a first fastening point on the transverse part of the T-shape and a second fastening point on the longitudinal part of the T-shape; Furthermore, the first deduction point is horizontally distributed, and the second deduction point is vertically distributed; The first and second fastening points are used for the axial connection of several stator tooth laminations.

[0007] Adjacent stator laminations have welding grooves at their splicing surfaces, and the welding grooves are W-shaped grooves.

[0008] The bottom of the aforementioned magnetic steel trough is provided with a semi-circular groove for storing magnetic steel adhesive.

[0009] The rotor laminations described above have several weight-removing holes along the circumferential direction within the lamination body; there are reinforcing ribs between adjacent weight-removing holes.

[0010] The advantages of this utility model are: This invention relates to a stator and rotor lamination for a mixer motor. The stator employs a segmented design, with several identical stator tooth laminations meshing at their ends and then axially stacked to form the entire stator. On one hand, the simple shape of each individual stator tooth lamination results in lower mold costs, longer mold life, and facilitates large-scale production with faster production speeds. On the other hand, the segmented design allows for a higher slot fill factor, exceeding 85%. A higher slot fill factor leads to lower copper losses, resulting in higher motor efficiency, especially noticeable in low-speed, high-torque motor applications. The rotor laminations utilize dovetail-shaped magnet slots to prevent the magnets from axially loosening due to centrifugal force generated during motor operation. The semi-circular groove at the bottom of the magnet slot stores excess magnet adhesive, ensuring a tighter fit between the magnets and the slot.

[0011] This utility model discloses a stator and rotor lamination for a mixer motor. It has a simple structure, is easy to use, effectively reduces the size and weight of the motor, improves the operating efficiency of the motor, and reduces the cost of the motor. It achieves small size, small weight, and low cost while meeting the requirements, and has strong practicality and wide applicability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the stator tooth lamination structure.

[0013] Figure 2 This is a schematic diagram of the stator lamination structure.

[0014] Figure 3 This is a schematic diagram of the rotor lamination structure.

[0015] The markings in the attached diagram have the following meanings: 1. Tooth groove, 2. Tooth, 3. First snap point, 4. Second snap point, 5. Welding groove, 6. Magnet groove, 7. Weight removal hole, 8. Reinforcing rib. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0017] A type of stator and rotor lamination for a mixer motor, wherein the stator lamination is as follows: Figure 1 As shown, the rotor laminations are as follows Figure 3 As shown.

[0018] The stator lamination is composed of a stator tooth lamination with a T-shaped cross section. The T-shaped stator tooth lamination has a first fastening point distributed horizontally in the transverse part and a second fastening point distributed vertically in the longitudinal part. Multiple stator tooth laminations are axially stacked to form a stator tooth block, wherein the first fastening point 3 and the second fastening point 4 serve as axial connections.

[0019] The stator tooth lamination has matching interlocking slots 1 and interlocking teeth 2 at both ends of its transverse portion. Multiple stator tooth blocks are joined together to form the stator via these slots and teeth. Simultaneously, a W-shaped welding groove 5 provides a fixed connection, increasing welding strength. The welding groove is located at the corner of the top surface of the transverse portion of the stator tooth lamination.

[0020] The first fastening point is located at the yoke, and the second fastening point is located at the stator teeth. This distribution results in a stronger connection and makes it less prone to loosening during stacking. Furthermore, the direction aligns with the magnetic circuit, reducing the impact on the magnetic circuit and motor performance. The horizontally distributed first fastening point and the vertically distributed second fastening point, oriented in the magnetic circuit direction, further minimize the impact on the magnetic circuit and motor performance.

[0021] Multiple rotor laminations are axially stacked to form a rotor core.

[0022] On the surface of the rotor laminations, several magnet slots are sequentially arranged circumferentially, and the magnet slots 6 are dovetail slots to prevent the magnets from loosening axially due to centrifugal force generated during motor operation. A semi-circular groove is provided at the bottom of the magnet slots to store excess magnet glue, ensuring a tighter fit between the magnets and the slots. Multiple weight-reducing holes 7 are evenly distributed circumferentially within the rotor laminations, reducing the overall weight and the rotor's moment of inertia, resulting in smoother motor operation. Between adjacent weight-reducing holes are internal rotor reinforcing ribs 8, increasing the internal structural strength of the rotor and ensuring more reliable torque transmission.

[0023] The slot-pole configuration uses a 22-pole, 24-slot concentrated winding scheme. The advantage of this scheme is its shorter end windings, reducing end winding length by approximately 80% compared to distributed winding schemes, and significantly lowering copper losses. Multi-pole schemes are suitable for low-speed, high-torque applications with low frequency and low iron losses. The more poles, the lower the yoke magnetic flux density. Increasing the rotor outer diameter can increase torque output, reduce copper losses, and improve efficiency.

[0024] The rotor adopts a surface-mount design, with the magnets fixed in dovetail grooves on the outer surface of the rotor core. This surface-mount design allows for higher air gap magnetic flux density, increased torque output, reduced copper losses, and improved efficiency.

[0025] The stator adopts a modular design, with several identical stator tooth blocks meshing at both ends to form the entire stator. This modular approach is more conducive to mass production and offers faster production speeds. Furthermore, because the shape of each individual stator tooth lamination is simple, mold costs are lower and mold life is longer. From a manufacturing perspective, the modular design allows for a higher slot fill factor; a fully circular stator typically has a slot fill factor of no more than 65%, while a modular stator can achieve over 85%. Due to this higher slot fill factor, the modular stator can have lower copper losses, resulting in higher motor efficiency, especially noticeable in low-speed, high-torque motor applications.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A type of stator and rotor lamination for a mixer motor, characterized in that, The stator laminations are formed by sequentially splicing several T-shaped stator tooth laminations through interlocking tooth slots and interlocking teeth on both sides, and several stator laminations are axially stacked to form the stator; Along the circumferential direction, the surface of the rotor laminations is provided with several magnetic steel grooves, which are dovetail grooves; several rotor laminations are axially stacked to form a rotor core.

2. The stator and rotor laminations for a mixer according to claim 1, characterized in that, The stator tooth lamination has a first fastening point on the transverse part of the T-shape and a second fastening point on the longitudinal part of the T-shape; Furthermore, the first deduction point is horizontally distributed, and the second deduction point is vertically distributed; The first and second fastening points are used for the axial connection of several stator tooth laminations.

3. The stator and rotor laminations for a mixer according to claim 1, characterized in that, Adjacent stator laminations have welding grooves at their splicing surfaces, and the welding grooves are W-shaped grooves.

4. The stator and rotor laminations for a mixer according to claim 1, characterized in that, The bottom of the magnetic steel trough is provided with a semi-circular groove for storing magnetic steel adhesive.

5. The stator and rotor laminations for a mixer according to claim 1, characterized in that, The rotor lamination is located within the lamination body and has several weight-removing holes along the circumferential direction; there are reinforcing ribs between adjacent weight-removing holes.

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