CN-224218150-U - Permanent magnet motor stator assembly of mixed magnetic conduction material for compressor and refrigeration compressor

Abstract

The utility model belongs to the technical field of compressors, and particularly discloses a permanent magnet motor stator assembly of a mixed magnetic conduction material for a compressor and a refrigeration compressor. The stator assembly of the permanent magnet motor integrally adopts a sandwich structure, the outer layer is made of silicon steel material to form a stator core, the appearance support is provided by the silicon steel material, the connecting part of the stator yoke and the stator teeth is provided with the mounting groove, and the filling block in the mounting groove is made of amorphous material, so that the stator assembly is simple in shape and easy to punch and process. In addition, the both ends of stator core still are provided with the encapsulation piece to prevent the amorphous material from the damage that the outside knocked into the lead. The permanent magnet motor stator component adopts the amorphous material and the silicon steel material as the mixed magnetic conduction material, so that the iron core loss of the tooth yoke part in the permanent magnet motor stator component is reduced, the motor efficiency is improved, the performance improvement is ensured to the greatest extent, and the component is compatible with the existing mechanical structure, and is convenient to use and mass production.

Inventors

• ZHAO XINHUA
• ZHANG YANG
• SUN YAN
• WANG YANXIA
• Shang Zhaolong
• LIU ZHENGWEI
• JIN GUODONG

Assignees

• 青岛万宝压缩机有限公司

Dates

Publication Date

20260508

Application Date

20250605

Claims (9)

1. 1. The permanent magnet motor stator assembly of the mixed magnetic conduction material for the compressor is characterized by comprising a stator core, a filling block and a packaging sheet; The stator core is made of silicon steel material and comprises a stator yoke and stator teeth; The stator yoke is of an annular structure, a plurality of stator teeth are arranged on the inner wall of the stator yoke along the circumferential direction, the plurality of stator teeth are arranged at equal intervals, and a mounting groove is formed at the joint of the stator yoke and the stator teeth; The filling blocks are arranged in the mounting grooves and made of amorphous materials; the encapsulation piece sets up in stator core's upper surface and lower surface, and the encapsulation piece is made by silicon steel material.
2. 2. The permanent magnet motor stator assembly of claim 1 wherein the permanent magnet motor stator assembly comprises a composite magnetic permeable material, The upper surface and the lower surface of the stator core are provided with raised buckling points; and a concave point matched with the buckling point is arranged on one side of the packaging sheet, which is close to the stator core.
3. 3. The permanent magnet motor stator assembly of claim 1 wherein the permanent magnet motor stator assembly comprises a composite magnetic permeable material, The filling block adopts a T-shaped structure.
4. 4. A permanent magnet motor stator assembly of a hybrid magnetic permeable material for a compressor according to claim 3, The filling block with the T-shaped structure is formed by bonding two amorphous stacked blocks with a straight-line-shaped structure.
5. 5. The permanent magnet motor stator assembly of claim 1 wherein the permanent magnet motor stator assembly comprises a composite magnetic permeable material, The filling blocks are of square structures or trapezoid structures.
6. 6. The permanent magnet motor stator assembly of claim 1 wherein the permanent magnet motor stator assembly comprises a composite magnetic permeable material, The profile edge of the side face of the filling block is provided with a chamfer.
7. 7. The permanent magnet motor stator assembly of claim 1 wherein the permanent magnet motor stator assembly comprises a composite magnetic permeable material, The stator yoke and the stator teeth are of an integrated structure.
8. 8. The permanent magnet motor stator assembly of claim 1 wherein the permanent magnet motor stator assembly comprises a composite magnetic permeable material, The stator core and the encapsulation piece are laminated by silicon steel sheets.
9. 9. A refrigerating compressor is characterized in that, The refrigeration compressor is provided with the permanent magnet motor stator assembly of the mixed magnetic conduction material for the compressor, which is disclosed in any one of claims 1 to 8.

Description

Permanent magnet motor stator assembly of mixed magnetic conduction material for compressor and refrigeration compressor Technical Field The utility model belongs to the technical field of compressors, and relates to a permanent magnet motor stator assembly of a mixed magnetic conduction material for a compressor and a refrigeration compressor. Background In order to meet the requirements of high efficiency and energy conservation, the stator assembly of the permanent magnet motor used by the refrigeration compressor is generally made of silicon steel materials with higher grades so as to reduce loss. Amorphous materials, which are ultra-thin high permeability materials that can reduce the iron loss by about 70% compared to conventional silicon steel materials, are a series of challenges in practical applications. Firstly, the hardness of the amorphous material is about 4 times that of the common silicon steel material, so that the abrasion problem of a die is particularly remarkable in the manufacturing process of a motor punching sheet, and the die repairing frequency is remarkably increased. Secondly, the thickness of the amorphous strip is extremely thin and is only about 0.025mm, which is equivalent to 1/14 to 1/20 of the thickness of the common silicon steel material. Therefore, when producing motors of the same stack thickness, the number of strokes of the mould needs to be increased by a factor of 14 to 20, resulting in a considerable reduction in the yield of motors produced under the same mould. In view of the above problems, improvements have been proposed. For example, when designing a motor punching sheet, the phenomenon of die collapse caused by stress concentration during punching is avoided by enlarging a transition chamfer, so that the service life of a die is prolonged, but the problem of loss of the die caused by high hardness of an amorphous material cannot be fundamentally solved by such measures. The other method is to replace the die stamping by adopting a linear cutting mode, but the method also has the problems of low yield and difficult guarantee of each dimensional tolerance of the motor, thereby influencing the subsequent production process of the motor. In addition, in order to reduce the abrasion of the die as much as possible, the motor can also adopt a disc type axial flux motor iron core structure, and the service life of the die is prolonged by a method of reducing the stamping area and ensuring uniform stress during stamping. However, this structural change may result in a motor that is not compatible with existing mechanical structures, not only requiring redesign of the installation scheme, but also failing to meet the capacity and size requirements of the new structure motor by the original stamping and wire cutting process. In view of the foregoing, there is a need for a stator assembly of a permanent magnet motor for a compressor in the prior art, which has a further improved structure. Disclosure of utility model The utility model aims to provide a permanent magnet motor stator assembly of a mixed magnetic conduction material for a compressor, which is applied to a refrigeration compressor. In order to achieve the above purpose, the utility model adopts the following technical scheme: A permanent magnet motor stator assembly of mixed magnetic conduction materials for a compressor comprises a stator core, a filling block and a packaging sheet; The stator core is made of silicon steel material and comprises a stator yoke and stator teeth; The stator yoke is of an annular structure, a plurality of stator teeth are arranged on the inner wall of the stator yoke along the circumferential direction, the plurality of stator teeth are arranged at equal intervals, and a mounting groove is formed at the joint of the stator yoke and the stator teeth; The filling block is arranged in the mounting groove and is made of amorphous materials; the encapsulation piece sets up in stator core's upper surface and lower surface, and the encapsulation piece is made by silicon steel material. Preferably, the upper surface and the lower surface of the stator core are provided with raised buckling points; and a concave point matched with the buckling point is arranged on one side of the packaging sheet close to the stator core. Preferably, the filling block adopts a T-shaped structure. Preferably, the filling block with the T-shaped structure is formed by bonding two amorphous stacked blocks with a straight-line structure. Preferably, the filling block adopts a square structure or a trapezoid structure. Preferably, the edges of the profile of the sides of the filling block are provided with chamfers. Preferably, the stator yoke is of unitary construction with the stator teeth. Preferably, the stator core and the encapsulation sheet are laminated from silicon steel sheets. A refrigeration compressor is provided with the permanent magnet motor stator assembly of the mixed magnetic conduction mat