Improved electric fan motor

Abstract

The utility model discloses an improved electric fan motor, it includes casing, rotor subassembly, heat dissipation module and noise reduction ring. Rotor subassembly realizes high -efficient heat dissipation through heat -conducting silica gel strip, and heat dissipation module combines with air scoop and heat dissipation fin group optimization air current path, and noise reduction ring utilizes the damping block to absorb vibration energy, and the arc fairing of casing inner wall and micropore structure further reduce the noise. In addition, the rubber pad layer of mounting seat bottom reduces vibration transmission. The present application can effectively reduce energy consumption, improve the heat dissipation performance and significantly reduce the noise, satisfy the demand of user to high -efficient, mute electric fan motor.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an improved electric fan motor. Background Technology

[0002] In the current household electric fan industry, the motor, as a core component, directly affects the performance and lifespan of the device. Traditional electric fan motors mostly use AC induction motors, which are simple in structure and low in cost, but consume more energy and have relatively limited efficiency during operation. Over prolonged use, the motor is prone to performance degradation due to overheating, and the noise level during operation is also quite noticeable, affecting the user experience. Furthermore, due to the relatively fixed motor design, heat dissipation performance is often insufficient, further limiting the fan's stable operation in high-temperature environments. Although some improved motor products exist on the market, there is still room for improvement in balancing energy consumption, heat dissipation, and noise reduction. Therefore, a more optimized design is urgently needed to meet user needs. Utility Model Content

[0003] The purpose of this utility model is to provide an improved electric fan motor that solves the problems mentioned in the background art.

[0004] This invention is implemented as follows: an improved electric fan motor, which mainly consists of: a housing, a rotor assembly disposed within the housing, a heat dissipation module fixed to the outside of the housing, and a noise reduction ring mounted on the rotor assembly. The housing is the main structure, the rotor assembly is connected to the housing via bearings, the heat dissipation module is fixed to the outer wall of the housing by bolts, and the noise reduction ring is fitted around the outer periphery of the rotor assembly and fits against the end face of the rotor assembly.

[0005] A further technical solution of this utility model is: the rotor assembly includes a rotating shaft, a magnetic pole piece fixed on the rotating shaft, and a coil wound around the outer periphery of the magnetic pole piece. The two ends of the rotating shaft are connected to the housing through bearings. The outer periphery of the magnetic pole piece is provided with a number of evenly distributed grooves. A thermally conductive silicone strip is embedded in the groove. The thermally conductive silicone strip is tightly attached to the magnetic pole piece and extends to the inner wall of the housing to form a heat conduction path.

[0006] A further technical solution of this utility model is: the heat dissipation module includes a heat sink assembly and an air guide shroud. The heat sink assembly is composed of several parallel metal sheets with gaps between them to form airflow channels. The air guide shroud is fixed to the outside of the heat sink assembly by a snap-fit ​​structure. The air inlet of the air guide shroud is connected to the external environment, and the air outlet faces the outer wall of the housing.

[0007] A further technical solution of this utility model is: the inner wall of the air guide shroud is provided with spiral guide ribs, the guide ribs extend along the axial direction of the air guide shroud, and the surface of the guide ribs is coated with a low friction coefficient coating to reduce the resistance when the airflow passes through and increase the airflow speed.

[0008] A further technical solution of this utility model is: the noise reduction ring is a ring structure, and its inner wall is provided with a number of protruding damping blocks. The damping blocks are in contact with the outer periphery of the rotor assembly. The material of the damping blocks is a high-molecular elastic material, which can absorb the vibration energy generated when the rotor assembly is running.

[0009] A further technical solution of this utility model is: the inner wall of the shell is provided with a plurality of arc-shaped guide plates, the arc-shaped guide plates are distributed along the axial direction of the shell, and the surface of the arc-shaped guide plates is provided with microporous structures, the diameter of the microporous structures being 0.5mm to 1mm, which are used to guide airflow and reduce the noise generated when airflow impacts the inner wall of the shell.

[0010] A further technical solution of this utility model is: the bottom of the housing is provided with a mounting base, the mounting base is connected to the housing by threads, and the bottom surface of the mounting base is provided with a rubber pad layer with a thickness of 3mm to 5mm, which is used to reduce the vibration transmitted to the external support structure when the motor is running.

[0011] A further technical solution of this utility model is: the outer periphery of the coil is wrapped with an insulating layer, and the outer surface of the insulating layer is coated with a graphene coating with a thickness of 0.1mm to 0.2mm, which is used to improve the thermal conductivity of the coil and reduce heat accumulation.

[0012] The beneficial effects of this utility model are as follows: This improved electric fan motor utilizes thermally conductive silicone strips on the rotor assembly to rapidly conduct heat generated by the magnetic pole pieces to the inner wall of the housing, effectively reducing the motor's temperature rise and improving operational stability in high-temperature environments. The heat dissipation module, through a combination of a guide shroud and heat sink assembly, optimizes the airflow path using guide ribs, further enhancing heat dissipation efficiency. The noise reduction ring absorbs vibration energy through damping blocks, and, in conjunction with the arc-shaped guide plate and microporous structure on the inner wall of the housing, significantly reduces motor noise during operation. Furthermore, the rubber pad at the bottom of the mounting base reduces vibration transmission, improving overall operational stability. The combined effect of these technologies results in excellent performance in terms of energy consumption, heat dissipation, and noise reduction, meeting users' needs for a high-efficiency, quiet electric fan motor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a partially enlarged view of the rotor assembly in this utility model.

[0015] Figure 3 This is an exploded view of the heat dissipation module in this utility model.

[0016] The attached diagram is labeled as follows: 1. Housing; 2. Rotor assembly; 3. Heat dissipation module; 4. Noise reduction ring; 5. Rotating shaft; 6. Magnetic pole piece; 7. Coil; 8. Thermally conductive silicone strip; 9. Heat sink assembly; 10. Air guide shroud; 11. Air guide rib; 12. Damping block; 13. Arc-shaped air guide plate; 14. Mounting base; 15. Rubber pad layer. Detailed Implementation

[0017] The specific implementation method of the improved electric fan motor of this utility model is as follows: Figures 1 to 3 Please provide a detailed explanation. For example... Figure 1 As shown, the improved electric fan motor includes a housing 1, a rotor assembly 2, a heat dissipation module 3, and a noise reduction ring 4. The housing 1 is the main structure, and the rotor assembly 2 is housed inside it. The heat dissipation module 3 is fixed to the outside of the housing 1 by bolts. The noise reduction ring 4 is fitted around the outer periphery of the rotor assembly 2 and fits against the end face of the rotor assembly 2. The housing 1 forms the basis of the overall structure, and its inner wall is provided with several arc-shaped guide plates 13. These guide plates are distributed along the axial direction of the housing 1, and their surfaces have micro-perforations with a diameter of 0.5 mm to 1 mm to guide airflow and reduce the noise generated when the airflow impacts the inner wall of the housing.

[0018] The rotor assembly 2 consists of a shaft 5, magnetic pole pieces 6, and a coil 7. The shaft 5 is connected to the housing 1 at both ends via bearings. The magnetic pole pieces 6 are fixed to the shaft 5, and the coil 7 is wound around the outer circumference of the magnetic pole pieces 6. Figure 2 As shown, the outer periphery of the magnetic pole piece 6 has several evenly distributed grooves, within which thermally conductive silicone strips 8 are embedded. The silicone strips 8 are tightly fitted to the magnetic pole piece 6 and extend to the inner wall of the housing 1, forming a heat conduction path. This allows the heat generated by the magnetic pole piece 6 during operation to be quickly transferred to the inner wall of the housing 1. The outer periphery of the coil 7 is wrapped with an insulating layer. The outer surface of the insulating layer is coated with a graphene coating with a thickness of 0.1 mm to 0.2 mm to improve the thermal conductivity of the coil 7 and reduce heat accumulation. This design ensures that heat inside the motor can be quickly conducted outwards, preventing performance degradation due to localized high temperatures.

[0019] The heat dissipation module 3 includes a heat sink assembly 9 and an air guide shroud 10, such as Figure 3As shown, the heat sink assembly 9 consists of several parallel metal plates with gaps between them to form airflow channels. The air guide shroud 10 is fixed to the outside of the heat sink assembly 9 via a snap-fit ​​structure. The air inlet of the air guide shroud 10 is connected to the external environment, while the air outlet faces the outer wall of the housing 1, thus achieving efficient heat dissipation. To further optimize the airflow path, the inner wall of the air guide shroud 10 is provided with spiral-shaped guide ribs 11, which extend along the axial direction of the air guide shroud 10. Their surfaces are coated with a low-friction coefficient coating to reduce airflow resistance and increase airflow velocity. The synergistic effect of the heat sink assembly 9 and the air guide shroud 10 allows cooling air to enter and pass through the heat sink assembly 9 more smoothly, thereby significantly improving heat dissipation efficiency.

[0020] The noise reduction ring 4 has a ring-shaped structure with several raised damping blocks 12 on its inner wall. The damping blocks 12 are in contact with the outer periphery of the rotor assembly 2. The damping blocks 12 are made of a high-polymer elastic material, which can absorb the vibration energy generated when the rotor assembly 2 is running. Through the design of its damping blocks 12, the noise reduction ring 4 effectively reduces the vibration generated by the rotor assembly 2 during high-speed rotation, thereby reducing the overall noise level of the motor during operation. In addition, the arc-shaped guide plate 13 on the inner wall of the housing 1, together with the microporous structure on its surface, further reduces the noise generated when the airflow impacts the inner wall of the housing, resulting in a significant improvement in the overall acoustic performance of the motor during operation.

[0021] The bottom of the housing 1 is provided with a mounting base 14, which is connected to the housing 1 by threads. The bottom surface of the mounting base 14 is provided with a rubber pad layer 15 with a thickness of 3mm to 5mm. The function of the rubber pad layer 15 is to reduce the vibration transmitted to the external support structure during motor operation, thereby improving the overall smoothness of motor operation. This design is particularly suitable for scenarios requiring stable operation for a long time, such as household appliances or industrial equipment, and can significantly reduce the impact of vibration on the surrounding environment.

[0022] In practical applications, when the motor starts, the current passes through the coil 7 to generate a magnetic field, driving the magnetic pole piece 6 to rotate the shaft 5, thus converting electrical energy into mechanical energy. During this process, the thermally conductive silicone strip 8 on the magnetic pole piece 6 rapidly conducts the heat generated during operation to the inner wall of the housing 1, and then dissipates the heat to the external environment through the heat dissipation module 3 on the outside of the housing 1. The air guide shroud 10 in the heat dissipation module 3 optimizes the airflow path through its spiral guide ribs 11, allowing cooling air to enter the heat sink assembly 9 more efficiently and carry away heat. At the same time, the damping block 12 of the noise reduction ring 4 absorbs the vibration energy generated when the rotor assembly 2 is running, and together with the arc-shaped guide plate 13 on the inner wall of the housing 1 and its surface microporous structure, reduces the noise of the motor during operation. The rubber pad layer 15 at the bottom of the mounting base 14 further reduces vibration transmission, ensuring that the motor remains stable and quiet during operation.

[0023] The connections and positions of all the aforementioned components have been meticulously designed to ensure the optimal balance of energy consumption, heat dissipation, and noise reduction in the motor. For example, rotor assembly 2 is connected to housing 1 via bearings, ensuring the stability of shaft 5 during high-speed rotation; the thermally conductive silicone strip 8 is tightly fitted to the magnetic pole piece 6 and the inner wall of housing 1, ensuring efficient heat conduction; the heat dissipation module 3 is fixed to the outer wall of housing 1 via a snap-fit ​​structure, facilitating disassembly and maintenance; the noise reduction ring 4 is fitted to the end face of rotor assembly 2, while the damping block 12 directly contacts the outer periphery of rotor assembly 2, thereby effectively absorbing vibration energy. These design details together constitute a complete system that solves the problems of high energy consumption, insufficient heat dissipation, and significant noise in traditional electric fan motors.

[0024] In application scenarios, this improved electric fan motor can be widely used in household appliances, industrial equipment, and other fields requiring efficient heat dissipation and quiet operation. For example, in household standing fans, this motor can significantly reduce operating noise and improve the user experience; in industrial ventilation equipment, its efficient heat dissipation performance ensures stable operation of the equipment for extended periods in high-temperature environments. Furthermore, because the rubber pad 15 at the bottom of the mounting base 14 reduces vibration transmission, this motor is also suitable for vibration-sensitive precision equipment, providing reliable driving force.

[0025] As can be seen from the above specific embodiments, this utility model achieves comprehensive optimization of the motor in terms of energy consumption, heat dissipation, and noise reduction by rationally designing the structure of each component and their interrelationships. This design not only meets users' needs for high-efficiency and quiet motors but also has high practicality and promotional value.

[0026] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0027] In practical applications, when this improved electric fan motor is installed in a household standing electric fan, its operation process is as follows. First, the motor is fixed to the fan bracket via the mounting bracket 14. The rubber pad 15 contacts the bracket, ensuring that the vibration generated by the motor during operation is effectively absorbed, thereby reducing the vibration energy transmitted to the external support structure. This design significantly reduces noise and equipment shaking caused by motor vibration, improving the user experience.

[0028] After the motor is started, the current flows through coil 7 to generate a magnetic field, driving the magnetic pole piece 6 to rotate the shaft 5, thus converting electrical energy into mechanical energy. During this process, the thermally conductive silicone strip 8 on the magnetic pole piece 6 quickly conducts the heat generated during operation to the inner wall of the housing 1. Because the thermally conductive silicone strip 8 is embedded in the groove on the outer periphery of the magnetic pole piece 6 and closely adheres to the inner wall of the housing 1, it forms an efficient heat conduction path, allowing heat to be quickly transferred from the magnetic pole piece 6 to the inner wall of the housing 1. Simultaneously, the insulating layer surface on the outer periphery of coil 7 is coated with a graphene coating, further improving the thermal conductivity of coil 7, reducing heat accumulation, and preventing performance degradation caused by localized high temperatures.

[0029] Subsequently, the heat from the inner wall of the housing 1 is dissipated to the external environment through the heat dissipation module 3. Cooling air enters from the air inlet of the air guide shroud 10, and guided by the spiral guide ribs 11, the airflow smoothly passes through the gaps between the heat sink fins 9 along an optimized path. The low-friction coefficient coating on the surface of the guide ribs 11 reduces airflow resistance and increases airflow velocity, thereby enhancing heat dissipation efficiency. The heat sink fins 9 consist of several parallel metal fins, and the gaps between the metal fins form airflow channels, allowing the cooling air to efficiently carry away heat and finally exhaust it from the air outlet of the air guide shroud 10. This design significantly improves the motor's heat dissipation capacity in high-temperature environments, ensuring its stable operation over long periods.

[0030] Meanwhile, the damping block 12 of the noise reduction ring 4 contacts the outer periphery of the rotor assembly 2, absorbing the vibration energy generated when the rotor assembly 2 rotates at high speed. The damping block 12 is made of a high-polymer elastic material, which can effectively reduce the transmission of vibration to the housing 1, thereby reducing the overall noise level of the motor during operation. In addition, the arc-shaped guide plate 13 provided on the inner wall of the housing 1, together with the microporous structure on its surface, further reduces the noise generated when the airflow impacts the inner wall of the housing. The arc-shaped guide plate 13 is distributed along the axial direction of the housing 1, and the microporous structure with a diameter of 0.5 mm to 1 mm on its surface can guide the airflow and reduce the turbulence effect when the airflow impacts the inner wall of the housing, thereby improving the overall acoustic effect of the motor during operation.

[0031] During fan operation, the rubber pad 15 at the bottom of the mounting base 14 further reduces the possibility of vibration being transmitted to the external support structure. The rubber pad 15, with a thickness of 3mm to 5mm, has excellent shock absorption performance and is particularly suitable for scenarios requiring long-term stable operation. This design not only improves the smoothness of motor operation but also significantly reduces the impact of vibration on the surrounding environment, allowing the fan to remain quiet and stable during operation.

[0032] As can be seen from the above specific operating steps, this utility model achieves comprehensive optimization of the motor in terms of energy consumption, heat dissipation, and noise reduction by rationally designing the structure of each component and their interrelationships. For example, the close fit between the thermally conductive silicone strip 8, the magnetic pole piece 6, and the inner wall of the housing 1 ensures efficient heat conduction; the heat dissipation module 3, through the synergistic effect of the air guide shroud 10 and the heat sink assembly 9, optimizes the airflow path and significantly improves heat dissipation efficiency; the damping block 12 of the noise reduction ring 4 cooperates with the arc-shaped guide plate 13 on the inner wall of the housing 1 to jointly reduce the noise level of the motor during operation. These design details together constitute a complete system that solves the problems of high energy consumption, insufficient heat dissipation, and significant noise in traditional electric fan motors.

[0033] In summary, this utility model, through specific structural design and operating principle, achieves comprehensive optimization of the motor in terms of energy consumption, heat dissipation, and noise reduction, meeting users' needs for high-efficiency and quiet electric fan motors, and has high practicality and promotional value.

[0034] 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 and improvements 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. An improved electric fan motor, characterized in that, The improved electric fan motor mainly consists of a housing (1), a rotor assembly (2) disposed inside the housing (1), a heat dissipation module (3) fixed to the outside of the housing (1), and a noise reduction ring (4) installed on the rotor assembly (2). The rotor assembly (2) is connected to the housing (1) through bearings, the heat dissipation module (3) is fixed to the outer wall of the housing (1) by bolts, and the noise reduction ring (4) is sleeved on the outer periphery of the rotor assembly (2) and fits against the end face of the rotor assembly (2).

2. The improved electric fan motor according to claim 1, characterized in that: The rotor assembly (2) includes a rotating shaft (5), a magnetic pole piece (6) fixed on the rotating shaft (5), and a coil (7) wound around the outer periphery of the magnetic pole piece (6). The two ends of the rotating shaft (5) are connected to the housing (1) through bearings. The outer periphery of the magnetic pole piece (6) is provided with several uniformly distributed grooves. Thermally conductive silicone strips (8) are embedded in the grooves. The thermally conductive silicone strips (8) are tightly attached to the magnetic pole piece (6) and extend to the inner wall of the housing (1) to form a heat conduction path.

3. The improved electric fan motor according to claim 1, characterized in that: The heat dissipation module (3) includes a heat sink assembly (9) and an air guide shroud (10). The heat sink assembly (9) is composed of several parallel metal sheets with gaps between them to form airflow channels. The air guide shroud (10) is fixed to the outside of the heat sink assembly (9) by a snap-fit ​​structure. The air inlet of the air guide shroud (10) is connected to the external environment, and the air outlet faces the outer wall of the housing (1).

4. An improved electric fan motor according to claim 3, characterized in that: The inner wall of the air guide shroud (10) is provided with spiral guide ribs (11), which extend along the axial direction of the air guide shroud (10), and the surface of the guide ribs (11) is coated with a low friction coefficient coating.

5. An improved electric fan motor according to claim 1, characterized in that: The noise reduction ring (4) is a ring structure with several protruding damping blocks (12) on its inner wall. The damping blocks (12) are in contact with the outer periphery of the rotor assembly (2). The damping blocks (12) are made of high polymer elastic material.

6. An improved electric fan motor according to claim 1, characterized in that: The inner wall of the shell (1) is provided with a plurality of arc-shaped guide plates (13), which are distributed along the axial direction of the shell (1). The surface of the arc-shaped guide plates (13) is provided with microporous structures with a diameter of 0.5 mm to 1 mm.

7. An improved electric fan motor according to claim 1, characterized in that: The bottom of the housing (1) is provided with a mounting base (14), which is connected to the housing (1) by threads. The bottom surface of the mounting base (14) is provided with a rubber pad layer (15) with a thickness of 3mm to 5mm.

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