Noise reduction shielding type double-layer copper mesh variable frequency motor

Abstract

The utility model relates to the technical field of variable frequency motors, and discloses a noise reduction shielding type double-layer copper mesh variable frequency motor, which comprises a frequency converter fixedly connected to the top of a motor main body, a noise reduction block fixedly connected to the outside of the motor main body, and a breathable shell fixedly connected to the outside of the noise reduction block. A noise reduction block is arranged in the motor main body, a fixing frame is fixedly connected in the noise reduction block, a cooling fan is fixedly connected in the fixing frame, a plurality of wave-shaped fins are arranged outside the motor main body, the wave-shaped fins are arranged to be wave-shaped, and a rotating shaft is fixedly connected outside the motor main body. According to the cooling fan, the fixing frame in the noise reduction block and materials of the noise reduction block can effectively absorb and buffer vibration generated during operation of the cooling fan and reduce noise transmission, the breathable shell further prevents noise from diffusing outwards, the wave-shaped fins disorganize a sound wave transmission path through special design, physical and psychological health of operators is facilitated, and the requirement for environmental protection is met.

Description

Technical Field

[0001] This utility model relates to the field of variable frequency motor technology, and in particular to a noise-reducing and shielding double-layer copper mesh variable frequency motor. Background Technology

[0002] With the rise of intelligent and green industrial development, the application of electronic devices and precision instruments is becoming increasingly widespread, leading to ever-increasing demands on motor performance. The noise and electromagnetic interference generated during motor operation not only affect the normal operation of surrounding equipment but can also cause environmental pollution and safety hazards. Meanwhile, in specialized fields such as aerospace and medical equipment, even more stringent standards have been set for the noise reduction and electromagnetic shielding performance of motors. Noise-reducing and shielded double-layer copper mesh variable frequency motors have emerged to meet the urgent needs of modern industry for high-performance motors.

[0003] The working principle of a variable frequency motor is to convert AC power with a fixed frequency and voltage into AC power with adjustable frequency and voltage through a frequency converter, thereby driving the motor. This type of motor can adjust its speed according to actual load requirements, showing certain advantages in energy saving. However, traditional variable frequency motors have shortcomings in noise reduction and electromagnetic shielding. Their noise reduction methods mainly rely on simple sound insulation materials, and shielding often uses a single-layer metal mesh or coating, which is difficult to cope with noise and electromagnetic interference problems in complex environments.

[0004] In existing technologies, due to the limitations of the sound insulation materials themselves and the lack of systematic noise reduction design, it is impossible to effectively block the propagation path of multiple sources of noise such as mechanical vibration and electromagnetic noise during motor operation. The overall noise reduction efficiency is low and cannot meet the needs of noise-sensitive industrial scenarios and high-end applications. Therefore, a noise-reducing and shielded double-layer copper mesh variable frequency motor is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a noise-reducing and shielded double-layer copper mesh variable frequency motor, which aims to improve the problem of low noise reduction efficiency in some existing devices.

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

[0007] A noise-reducing and shielded double-layer copper mesh variable frequency motor includes a motor body, a frequency converter fixedly connected to the top of the motor body, a noise-reducing block fixedly connected to the outside of the motor body, and a breathable outer shell fixedly connected to the outside of the noise-reducing block.

[0008] As a further description of the above technical solution:

[0009] The noise reduction block is internally fixedly connected to a mounting frame, and the mounting frame is internally fixedly connected to a cooling fan.

[0010] As a further description of the above technical solution:

[0011] The motor body is provided with multiple wave-shaped fins on its exterior, and the wave-shaped fins are configured as wave shapes;

[0012] As a further description of the above technical solution:

[0013] A rotating shaft is fixedly connected to the outside of the motor body, and two copper meshes are provided on the outside of the rotating shaft;

[0014] As a further description of the above technical solution:

[0015] Two support frames are fixed to the bottom of the motor body;

[0016] As a further description of the above technical solution:

[0017] Support columns are provided on both sides of the support frame.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, the fixing frame inside the noise reduction block and the material of the noise reduction block can effectively absorb and buffer the vibration generated when the cooling fan is running, reduce the transmission of noise, and the breathable shell further blocks the noise from spreading outward. The wave-shaped fins are specially designed to disrupt the sound wave propagation path and reduce noise radiation. The comprehensive application of these noise reduction measures greatly reduces the noise generated when the motor is running, providing a quieter working environment, which is beneficial to the physical and mental health of the operators and meets environmental protection requirements.

[0020] 2. In this utility model, the wave-shaped fins increase the contact area between the motor body and the air, accelerating heat conduction; the cooling fan forces airflow, forming an efficient air circulation, which quickly dissipates the heat generated by the motor, extends the service life of the motor, reduces the probability of failure caused by overheating, and improves the reliability and stability of the motor. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the noise-reducing and shielding double-layer copper mesh variable frequency motor proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the breathable outer shell of the noise-reducing and shielding double-layer copper mesh frequency converter motor proposed in this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a schematic diagram of the copper mesh structure of the noise-reducing and shielding double-layer copper mesh variable frequency motor proposed in this utility model.

[0025] Legend:

[0026] 1. Motor body; 2. Inverter; 3. Ventilated housing; 4. Copper mesh; 5. Shaft; 6. Support frame; 7. Support column; 8. Wave-shaped fins; 9. Noise reduction block; 10. Fixing frame; 11. Cooling fan. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1 to 3This utility model provides an embodiment of a noise-reducing and shielded double-layer copper mesh variable frequency motor, including a motor body 1. The motor body 1 is the core power output component, using a high-strength alloy shell. It integrates a high-efficiency electromagnetic winding and rotor structure. The shell undergoes special surface treatment, possessing good corrosion resistance and wear resistance, and can adapt to complex industrial environments. The internal electromagnetic winding is wound with high-purity enameled wire, combined with an optimized magnetic circuit design, which can effectively reduce energy loss and improve the motor's operating efficiency. A frequency converter 2 is fixedly connected to the top of the motor body 1. The frequency converter 2 has an aluminum alloy shell, which ensures good heat dissipation performance and has a certain electromagnetic shielding capability. The frequency converter 2 integrates an advanced control chip and power module. Through preset programs or external signal commands, it can quickly and accurately convert AC power with fixed frequency and fixed voltage into AC power with adjustable frequency and voltage. Its modular design facilitates later maintenance and upgrades, and it has comprehensive overcurrent, overvoltage, and overheat protection functions to ensure the safe and stable operation of the motor under various working conditions. A noise reduction block 9 is fixedly connected to the outside of the motor body 1, and a ventilated outer shell 3 is fixedly connected to the outside of the noise reduction block 9. The ventilated outer shell 3 is made of lightweight, high-strength mesh metal material, such as stainless steel wire mesh or aluminum alloy mesh, which has good mechanical strength and can protect the internal noise reduction block 9 and the motor body 1. At the same time, its mesh structure ensures smooth airflow, providing necessary ventilation for motor heat dissipation. In addition, the surface of the ventilated outer shell 3 is specially treated, providing certain dustproof and moisture-proof properties, which can extend the service life of the motor. The noise reduction block 9 adopts a multi-layer composite noise reduction method. Made of high-strength engineering plastic, the mounting bracket 10 incorporates sound-absorbing cotton and a damping layer. The sound-absorbing cotton effectively absorbs mid-to-high frequency noise generated during motor operation, while the damping layer suppresses structural vibration and reduces the propagation of low-frequency noise. Its unique honeycomb structure ensures support strength while further enhancing vibration damping, providing a stable mounting base for the cooling fan 11. The cooling fan 11 is internally fixed to the mounting bracket 10. This high-performance axial fan uses aerospace-grade engineering plastic blades and has undergone dynamic balancing testing, exhibiting low noise and high airflow. The fan motor is a brushless DC motor, offering high operating efficiency, long lifespan, and easy maintenance. The cooling fan 11's speed is controlled by an intelligent temperature control system. When the motor temperature is low, the fan operates at low speed to reduce noise; when the motor temperature rises, the fan automatically increases speed to accelerate airflow and promptly remove the heat generated by the motor, ensuring the motor always operates within a suitable temperature range.

[0029] Reference Figure 1 , Figure 2 and Figure 4The motor body 1 has multiple wave-shaped fins 8 on its exterior. The wave-shaped fins 8 are made of aluminum alloy with excellent thermal conductivity and are integrally formed by precision casting. Their unique wave design greatly increases the contact area with air, which can improve heat dissipation efficiency compared with traditional planar fins. At the same time, the wave structure can also effectively disrupt the sound wave propagation path. By utilizing the principle of sound wave reflection and interference, the noise radiation generated during motor operation is reduced, achieving the dual functions of heat dissipation and noise reduction. The wave-shaped fins 8 are set as waves. A rotating shaft 5 is fixedly connected to the exterior of the motor body 1. Two copper meshes 4 are set on the exterior of the rotating shaft 5. The copper meshes 4 adopt a fine weaving process with extremely small mesh size, which can effectively filter high-frequency electromagnetic interference. The outer copper mesh 4 has a slightly larger mesh, which can block low-frequency electromagnetic interference while ensuring air circulation and not affecting the heat dissipation of the motor. Both layers of copper meshes 4 are made of high-purity oxygen-free copper material, which has good conductivity and shielding performance. The edges of the copper meshes 4 are specially treated to form a complete electromagnetic shielding system. Two support frames 6 are fixed at the bottom of the motor body 1, and support columns 7 are set on both sides of the support frames 6.

[0030] Working principle: The frequency converter 2 is installed on the top of the motor body 1. After the power is turned on, the frequency converter 2 converts the AC power of fixed frequency and fixed voltage into AC power with adjustable frequency and voltage, providing a power supply for the motor body 1. It can accurately adjust the motor speed and torque according to the actual load requirements. The electromagnetic structure inside the motor body 1 generates a rotating magnetic field under the drive of the frequency converter power supply, which drives the rotating shaft 5 to rotate, realizing the conversion of electrical energy into mechanical energy and outputting power to external equipment. Inside the noise reduction block 9, the fixing frame 10 securely installs the cooling fan 11. The vibration generated by the cooling fan 11 when it is running is absorbed and buffered by the material of the fixing frame 10 and the noise reduction block 9, reducing the transmission of noise. The breathable shell 3 wraps the noise reduction block 9, which further blocks the noise from spreading outward while ensuring the heat dissipation and ventilation of the motor. The waveform fins 8 on the outside of the motor body 1 disrupt the sound wave propagation path through a special waveform design, and reduce noise radiation by using the principles of sound wave reflection and interference.

[0031] The motor body 1 generates heat during operation. The wave-shaped fins 8 increase the contact area between the motor body 1 and the air, accelerating heat conduction into the air. The cooling fan 11 operates stably under the support of the fixed frame 10, forcing airflow to exhaust the hot air around the motor body 1 through the ventilated outer shell 3, while simultaneously introducing cool air to form an air circulation, achieving efficient heat dissipation and ensuring stable operation of the motor at a suitable temperature. Two copper meshes 4 are set outside the rotating shaft 5, forming a double-layer copper mesh shielding structure. The inner layer of fine copper mesh 4 filters high-frequency electromagnetic interference, while the outer layer of slightly larger mesh copper mesh 4 blocks low-frequency interference and also provides ventilation. The two work together to reflect and absorb electromagnetic interference generated inside the motor, preventing it from leaking out and interfering with surrounding electronic equipment, while also resisting interference from external electromagnetic signals to the motor. The two support frames 6 at the bottom of the motor body 1 and the support columns 7 on both sides of the support frames 6 together form a stable support structure. The support columns 7 enhance the stability of the support frames 6, disperse the vibration and pressure generated when the motor is working, and ensure that the motor remains stable during operation, avoiding performance impact or additional noise caused by shaking.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 double-layer copper mesh variable frequency motor of noise reduction shielding type, comprising a motor body (1), characterized in that: A frequency converter (2) is fixedly connected to the top of the motor body (1), a noise reduction block (9) is fixedly connected to the outside of the motor body (1), and a breathable shell (3) is fixedly connected to the outside of the noise reduction block (9). The noise reduction block (9) is internally fixedly connected to a fixing frame (10), and the fixing frame (10) is internally fixedly connected to a cooling fan (11). The motor body (1) is provided with a plurality of wave-shaped fins (8) on its exterior, and the wave-shaped fins (8) are configured as waves.

2. The double-layer copper mesh variable frequency motor with noise reduction shielding according to claim 1, characterized in that: The motor body (1) is fixedly connected to a rotating shaft (5), and two copper meshes (4) are provided on the outside of the rotating shaft (5).

3. The double-layer copper mesh variable frequency motor with noise reduction shielding according to claim 2, characterized in that: Two support frames (6) are fixed to the bottom of the motor body (1).

4. The double-shielded dual-speed copper mesh variable frequency motor according to claim 3, characterized in that: Support columns (7) are provided on both sides of the support frame (6).

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