Anti-resonance noise reduction motor stator

Abstract

This utility model relates to the field of anti-resonance noise reduction motor stator technology, and particularly to an anti-resonance noise reduction motor stator, solving the problem in the prior art where changes in the gap between the stator and the magnetic mechanism cause structural instability, vibration, and resonance-induced noise. The anti-resonance noise reduction motor stator includes a housing, a stator assembly inside the housing, an outer sleeve inside the stator assembly, a magnetic layer inside the outer sleeve, a buffer layer between the outer sleeve and the magnetic layer, a rotating shaft inside the magnetic layer, a protruding ring fixedly connected inside the housing, and a receiving groove at the inner bottom of the housing, with several vibration damping blocks fixedly connected inside the receiving groove. This utility model ensures that the gap between the stator assembly and the outer sleeve remains constant, thereby guaranteeing the stability of the stator assembly, preventing resonance with external equipment, and preventing vibration from affecting the use of the motor stator during operation while also reducing noise.

Description

Technical Field

[0001] This utility model relates to the field of anti-resonance and noise reduction motor stator technology, and in particular to anti-resonance and noise reduction motor stator. Background Technology

[0002] The stator of a motor is the stationary part of a motor or generator. It mainly consists of three parts: the stator core, the stator windings, and the frame. Its main function is to generate a rotating magnetic field. When current flows through the stator windings, according to Ampere's circuital law, the current will generate a magnetic field in the stator core, forming a magnetic flux.

[0003] Chinese Patent Publication No. CN218415941U discloses a noise-reducing motor stator, including a stator and a noise-reducing water jacket disposed on its outer surface. The noise-reducing water jacket is cylindrical and has a cavity for containing liquid. The side wall has several layers of elastic columns evenly distributed and penetrating the inner and outer walls of the noise-reducing water jacket. The outer wall of the stator is provided with several grooves that match the position and size of the elastic columns. Two of the elastic columns have flow channels that connect the cavity to the outer space of the noise-reducing water jacket. These flow channels are sealed with caps. This utility model uses water for noise reduction and cooling, and can also achieve vibration reduction through the elastic columns. If there is a greater need for cooling, the flow channels can be connected to a circulating cooling water system for water cooling. Compared with existing equipment and processes, this utility model has certain advantages.

[0004] For existing anti-resonance noise reduction motor stators, in actual use, the structural instability and vibration caused by the change in the gap between the stator and the magnetic components in the motor lead to high-speed instability. The motor structure generates vibration and noise due to resonance, thus causing potential noise problems. Utility Model Content

[0005] The purpose of this invention is to provide an anti-resonance and noise-reducing motor stator, which solves the problem in the prior art where changes in the gap between the stator and the magnetic mechanism cause structural instability and vibration, and resonance generates noise.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The anti-resonance noise reduction motor stator includes a housing, a stator assembly inside the housing, an outer sleeve inside the stator assembly, a magnetic layer inside the outer sleeve, a buffer layer between the outer sleeve and the magnetic layer, a rotating shaft inside the magnetic layer, a protruding ring fixedly connected inside the housing, and a receiving groove opened at the bottom of the housing, with several vibration damping blocks fixedly connected inside the receiving groove.

[0008] Preferably, the magnetic layer is made of several magnets fixedly connected to the surface of the rotating shaft.

[0009] Preferably, the outer layer is made of a spiral wound tape containing glass fiber or carbon fiber wrapped around the surface of the buffer layer.

[0010] Preferably, both feet at the bottom of the receiving groove are rounded.

[0011] Preferably, a frustum-shaped mounting groove is provided on one side of the outer casing, and a sealing plate is fixedly connected inside the mounting groove.

[0012] Preferably, one end of the rotating shaft passes through the surface of the sealing plate.

[0013] This utility model has the following beneficial effects:

[0014] After the stator assembly is powered on, the magnetic layer drives the rotating shaft to rotate through electromagnetic force. After a period of use, the temperature inside the outer casing rises, and the rotating shaft and magnetic layer expand due to heat, squeezing the buffer layer. The outer casing remains unchanged in shape, ensuring that the gap between the stator assembly and the outer casing remains constant, thus guaranteeing the stability of the stator assembly. The protruding rings enhance the rigidity of the vibration transmission path, weakening the vibration transmission from the bottom to the side wall. The receiving groove and vibration damping block construct a vibration transmission barrier to suppress low-frequency vibration. The frustum-shaped mounting groove weakens the vibration transmitted by the sealing plate and avoids resonance with external equipment. This prevents vibration from affecting the use of the motor stator and also reduces noise. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Cross-sectional view of the inner and outer shell;

[0018] Figure 3 for Figure 2 Side view diagram after removing the stator assembly;

[0019] Figure 4 for Figure 3 Side view of the central receiving tank;

[0020] Figure 5 for Figure 3 A side view of the inner and outer layers.

[0021] In the diagram: 1. Outer shell; 2. Stator assembly; 3. Outer jacket layer; 4. Magnetic layer; 5. Buffer layer; 6. Rotating shaft; 7. Protruding ring; 8. Receiving groove; 9. Vibration damping block; 10. Mounting groove; 11. Sealing plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Reference Figure 1-5 The anti-resonance noise reduction motor stator includes a housing 1, a stator assembly 2 inside the housing 1, and an outer sleeve 3 inside the stator assembly 2. When the stator assembly 2 is in use, there is no contact between the stator assembly 2 and its inner outer sleeve 3. The outer sleeve 3 is rotated by a magnetic layer 4 under electromagnetic force. The outer sleeve 3 requires a magnetic layer 4 inside, and a buffer layer 5 is provided between the outer sleeve 3 and the magnetic layer 4. The buffer layer 5 is made of an elastic material that does not deform when heated or cooled. A rotating shaft 6 is located inside the magnetic layer 4. The rotating shaft 6 can rotate under the electromagnetic force received by the magnetic layer 4. The magnetic layer 4 can drive the buffer layer 5 and the outer sleeve 3 to rotate together, allowing the stator assembly 2 to drive the rotating shaft 6 to rotate. After the stator assembly 2 is powered on, the temperature inside the housing 1 rises. When the temperature rises, the rotating shaft 6 expands radially due to heat, while the outer sleeve... The glass fiber in layer 3 has a small coefficient of thermal expansion, so the outer layer 3 hardly expands. The buffer layer 5 is compressed to accommodate the expansion of the rotating shaft 6 and the magnetic layer 4. When cooling, the rotating shaft 6 shrinks back to its original shape, the outer layer 3 changes little, and the buffer layer 5 recovers its original shape by elasticity, filling the space. This ensures that the temperature during use does not affect the gap between the outer layer 3 and the stator assembly 2, so that the stator assembly 2 will not vibrate due to the change in the gap. The inner part of the outer shell 1 is fixedly connected with a protruding ring 7, which can easily support the stator assembly 2. The protruding ring 7 can enhance the rigidity of the vibration transmission path and weaken the vibration transmission from the bottom surface to the side wall. The inner bottom of the outer shell 1 is provided with a receiving groove 8, and several vibration damping blocks 9 are fixedly connected inside the receiving groove 8. The vibration damping blocks 9 can build a vibration transmission barrier inside the receiving groove 8 to suppress low-frequency vibration.

[0024] Furthermore, the magnetic layer 4 is made of several magnets fixedly connected to the surface of the rotating shaft 6. When the stator assembly 2 starts and drives the rotating shaft 6 to rotate through electromagnetic force in conjunction with the magnets, the temperature inside the outer shell 1 rises, which causes the rotating shaft 6 and the magnets to expand. The collision of the magnets squeezes the buffer layer 5, causing the buffer layer 5 to shrink and protect the outer shell 3 from deformation. This prevents the outer shell 3 and the stator assembly 2 from vibrating due to changes in the gap.

[0025] Furthermore, the material of the outer jacket 3 is a winding tape containing glass fiber or carbon fiber wrapped around the surface of the buffer layer 5. The glass fiber or carbon fiber can hardly deform when heated or cooled, thus ensuring that the outer jacket 3 and the stator assembly 2 will not vibrate due to changes in the gap.

[0026] Furthermore, the bottom of the receiving groove 8 has two rounded feet. The rounded feet can avoid stress concentration, reduce vibration amplification effect, and prevent resonance.

[0027] Furthermore, a frustum-shaped mounting groove 10 is provided on one side of the outer casing 1. A sealing plate 11 is fixedly connected inside the mounting groove 10. The frustum shape of the sealing plate 11 and the mounting groove 10 can weaken the vibration transmitted by the sealing plate 11 and avoid resonance with external equipment.

[0028] Furthermore, one end of the rotating shaft 6 passes through the surface of the sealing plate 11. When in use, the rotating shaft 6 leaves the sealing plate 11 and connects to external equipment, thereby driving the external equipment.

[0029] In summary:

[0030] When the motor is in use, the stator assembly 2 inside the outer casing 1 is energized, which drives the magnets through electromagnetic force to rotate the shaft 6. After the shaft 6 rotates, the temperature inside the outer casing 1 gradually increases during use, causing the shaft 6 and the magnetic layer 4 to expand due to heat. The outer casing 3 is made of glass fiber or carbon fiber and will not deform. Therefore, the deformation of the magnets in the magnetic layer 4 can compress the buffer layer 5. The deformation of the buffer layer 5 ensures that the outer casing 3 is not affected, and the stator assembly 2 will not vibrate due to changes in the gap, thus ensuring... In normal use, the stator assembly 2 is located inside the housing 1. The vibration damping block 9 inside the receiving groove 8 forms a vibration transmission barrier to suppress low-frequency vibration. At the same time, the rigidity of the vibration transmission path is enhanced by the protruding ring 7, which weakens the vibration transmission from the bottom surface to the side wall. It can also weaken the vibration transmitted by the sealing plate 11 through the frustum-shaped mounting groove 10, and avoid resonance with external equipment. Through the above structure, the stator assembly 2 can effectively reduce vibration and noise by preventing resonance and enhancing structural rigidity during use, prevent the separation of the magnetic layer 4 from the rotating shaft 6, and reduce vibration.

[0031] 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 this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A resonance-resistant and noise-reducing motor stator, comprising a housing (1), characterized in that, The outer shell (1) has a stator assembly (2) inside, an outer sleeve layer (3) inside the stator assembly (2), a magnetic layer (4) inside the outer sleeve layer (3), a buffer layer (5) between the outer sleeve layer (3) and the magnetic layer (4), a rotating shaft (6) inside the magnetic layer (4), a protruding ring (7) fixedly connected inside the outer shell (1), a receiving groove (8) opened at the bottom of the inner shell (1), and several vibration damping blocks (9) fixedly connected inside the receiving groove (8).

2. The anti-resonance noise reduction motor stator according to claim 1, characterized in that, The magnetic layer (4) is made of several magnets fixedly connected to the surface of the rotating shaft (6).

3. The anti-resonance noise reduction motor stator according to claim 1, characterized in that, The material of the outer layer (3) is a winding tape containing glass fiber or carbon fiber wrapped around the surface of the buffer layer (5).

4. The anti-resonance noise reduction motor stator according to claim 1, characterized in that, The bottom of the receiving groove (8) has two arc-shaped feet.

5. The anti-resonance noise reduction motor stator according to claim 1, characterized in that, The outer casing (1) has a frustum-shaped mounting groove (10) on one side, and a sealing plate (11) is fixedly connected inside the mounting groove (10).

6. The anti-resonance noise reduction motor stator according to claim 5, characterized in that, One end of the rotating shaft (6) passes through the surface of the sealing plate (11).

Images