Axial flow fan with noise reduction function

Abstract

The utility model relates to the field of axial flow fans, and discloses an axial flow fan with a noise reduction function, which comprises a shell, protection plates are arranged at two ends of the shell, a motor support is arranged in the shell, the motor support is fixedly connected with a motor, an impeller is arranged on one side of the motor, a bearing plate is arranged in the motor support, and the bearing plate is fixedly connected with the motor. A bearing plate is arranged on one side of the motor support, a cushion pad is arranged below the bearing plate, a spring is arranged below the cushion pad, a positioning block is arranged on the side, close to a motor rotating shaft, of the motor support, and the positioning block tightly presses the motor support, so that the axial flow fan with the noise reduction function is provided. And if the position of the axial flow fan is close to a bedroom or a rest area, the mechanical noise may disturb rest and sleep of people, so that the feeling of fatigue is increased, and the life quality is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, and more specifically to an axial flow fan with a noise reduction function. Background Art

[0002] The main function of an axial flow fan is to provide air circulation and ventilation. The noise generated by an axial flow fan comes from two aspects. On the one hand, when the blades of the axial flow fan rotate, they will produce friction or impact with the air. The faster the speed, the higher the frequency of contact with the air, and the sharper the noise generated. On the other hand, the motor will vibrate when working. These vibrations will be transmitted through the structure of the fan, thereby generating mechanical noise. Since the motor will vibrate when working, if the axial flow fan is located close to the bedroom or rest area, the mechanical noise may disturb people's rest and sleep, increase fatigue, and affect the quality of life.

[0003] In view of this, we propose an axial flow fan with noise reduction function. Utility Model Content

[0004] The purpose of the utility model is to provide an axial flow fan with a noise reduction function in response to the deficiencies of the prior art. The motor will generate vibrations when working. If the axial flow fan is located close to a bedroom or rest area, the mechanical noise may disturb people's rest and sleep, leading to increased fatigue and affecting the quality of life.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an axial flow fan with noise reduction function, comprising: a shell, protective plates are provided at both ends of the shell, a motor bracket is provided inside the shell, the motor bracket is fixedly connected to the motor, an impeller is provided on one side of the motor, a bearing plate is provided inside the motor bracket, a buffer pad is provided under the bearing plate, a spring is provided under the buffer pad, and a positioning block is provided on the side of the motor bracket close to the motor rotating shaft, and the positioning block tightly presses the motor bracket.

[0006] Preferably, an air inlet hole is provided on a side of the motor bracket close to the impeller, and the air inlet hole is conical in shape, and has the largest inner diameter on a side close to the motor.

[0007] Preferably, the buffer pad comprises an upper rubber pad, the lower side of the upper rubber pad is fixedly connected to one end of a second spring, the other end of the second spring is fixedly connected to a lower rubber pad, and the lower rubber pad is tightly pressed against one end of a bearing plate.

[0008] Preferably, a fixing plate is provided inside the upper rubber pad, and the fixing plate is fixedly connected to the motor bracket.

[0009] Preferably, the positioning block consists of a left connecting block and a right connecting block, and a third spring is provided inside the left connecting block and the right connecting block. The third spring is tightly pressed against the fixed base plate, and the fixed base plate is tightly pressed against the motor bracket.

[0010] Preferably, the motor output shaft passes through the positioning block and one side of the motor bracket and is fixedly connected to the impeller.

[0011] According to the above scheme,

[0012] Compared with the prior art, the beneficial effects are as follows:

[0013] The utility model is fixedly connected to the motor bracket through the inner wall of the shell, and a load-bearing plate, a buffer pad and a spring are arranged inside the motor bracket to fix the motor with a positioning block, which can effectively absorb and buffer the vibration that may be generated during the operation of the motor, so as to reduce the damage of the vibration to the motor and other components, prolong the service life of the entire system, and achieve the function of noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the internal distribution structure of the housing of the utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of the motor bracket of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the motor bracket of the utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of the housing of the utility model;

[0018] In the figure: 1, casing; 2, protective plate; 3, motor bracket; 4, motor; 5, impeller; 6, positioning block; 301, bearing plate; 302, buffer pad; 303, spring; 304, air inlet; 305, upper rubber pad; 306, second spring; 307, lower rubber pad; 308, fixing plate; 601, left connecting block; 602, right connecting block; 603, third spring; 604, fixing bottom plate. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and not limiting of the protection scope of the utility model.

[0020] Example

[0021] like Figure 1-Figure 4As shown: An axial flow fan with noise reduction function, including: protective plates 2 are provided at both ends of the shell 1, which is to protect the internal components from the influence of the external environment. Inside the shell 1, a motor bracket 3 is designed. The main function of this motor bracket 3 is to fix and connect the motor 4, which provides a stable support for the motor to ensure its normal operation. The motor 4 plays a core role in this structure and is responsible for driving the operation of the entire system.

[0022] On one side of the motor 4, there is an impeller 5. This impeller 5 is directly driven by the motor 4, and its rotation generates power to drive the system to work. This layout makes power transmission more direct and efficient.

[0023] A bearing plate 301 is provided inside the motor bracket 3. A buffer pad 302 and a spring 303 are provided below the bearing plate 301. This design is intended to absorb and buffer the vibration that may be generated during the operation of the motor, so as to reduce the damage to the motor and other components caused by the vibration, extend the service life of the entire system, and achieve the function of noise reduction.

[0024] A positioning block 6 is provided on one side of the motor bracket 3 close to the rotating shaft of the motor 4. The positioning block 6 is designed to tightly fit the motor bracket 3 to provide additional stability and support. This unique design ensures that the motor remains stable when running at high speed, greatly reducing the risk of performance loss or structural damage caused by vibration.

[0025] It can be understood that the air inlet 304 is cleverly designed to be conical. The conical structure not only allows the airflow to enter smoothly, but also effectively changes the direction and speed of the airflow, thereby being more conducive to the operation of the impeller. When the airflow passes through the air inlet, the changes in its speed and pressure are precisely controlled, so that the impeller can operate in the best state.

[0026] The inner diameter of the air inlet 304 near the motor 4 is the largest, and a large inner diameter can reduce the resistance of the airflow and help maintain the stability of the airflow. A large inner diameter also means a larger flow area, which can accommodate more airflow.

[0027] It is understood that the top layer of the buffer pad 302 is the upper rubber pad 305. The rubber material has good elasticity and shock absorption properties, and can effectively absorb and disperse the impact force from above. The main function of the upper rubber pad 305 is to act as a primary buffer, converting most of the vibration energy into heat energy, thereby preventing the energy from being transmitted to the core part of the device.

[0028] One end of the second spring 306 is fixedly connected to the lower side of the upper rubber pad 305. As a mechanical elastic element, the spring has excellent elasticity and restoring force, and can effectively buffer and reduce impact. The second spring 306 plays a key role here, connecting the upper rubber pad and the lower rubber pad to form an elastic buffer system.

[0029] The other end of the second spring 306 is fixedly connected to the lower rubber pad 307. The lower rubber pad 307 is made of rubber like the upper rubber pad 305 and also has good shock absorption performance. The main function of the lower rubber pad 307 is to act as a secondary buffer to further absorb and disperse the residual impact force transmitted by the second spring 306.

[0030] The lower rubber pad 307 is tightly pressed against one end of the carrier plate 301. This pressing ensures the close contact between the buffer pad 302 and the carrier plate 301, so that the buffer pad 302 can effectively isolate the impact force from the core part of the device. At the same time, the tight pressing also ensures that the buffer pad 302 will not be displaced or loosened during the operation of the device, thereby maintaining the stability of its buffering performance.

[0031] It is understandable that: inside the upper rubber pad 305 of the buffer pad 302, a key component, the fixing plate 308, is hidden. The fixing plate 308 is not placed randomly, but is precisely designed to achieve its specific function.

[0032] The fixing plate 308 is made of a high-strength material with sufficient rigidity and stability. Its main task is to provide a solid support point to ensure a stable connection between the buffer pad 302 and the entire motor bracket 3. This connection must be strong enough to withstand various forces and vibrations that may occur during the operation of the equipment.

[0033] The fixing plate 308 is designed to be fixedly connected to the motor bracket 3. This connection uses high-strength bolts or other reliable fasteners to ensure a tight connection between the two. Through this fixed connection, the stability and rigidity of the motor bracket 3 are significantly enhanced. Even when the device is subjected to strong external impact or internal vibration, this connection can maintain its integrity and prevent any form of displacement or loosening.

[0034] The location of the fixing plate 308 is also carefully considered. It is placed inside the upper rubber pad 305, which can maximize the shock absorption performance of the rubber pad while maintaining a stable connection with the motor bracket 3. This unique design allows the buffer pad 302 and the motor bracket 3 to work as a whole to resist the influence of external impact and internal vibration.

[0035] It is understandable that the left connecting block 601 and the right connecting block 602 are designed with a third spring 603 inside. This spring is not placed randomly, but is selected after careful consideration. The third spring 603 plays a vital role here. Its unique elastic properties enable it to deform when subjected to external pressure or impact, absorb and disperse these forces, thereby protecting the motor bracket from damage.

[0036] The other end of the third spring 603 is tightly pressed against the fixed base plate 604. This pressing relationship is precisely adjusted to ensure that the force of the spring can be evenly transmitted to the fixed base plate 604. The function of the fixed base plate 604 is to further transmit the force of the spring to the motor bracket 3 to achieve stable fixation of the motor bracket.

[0037] The connection between the fixed base plate 604 and the motor bracket 3 is also carefully designed. The tight pressing relationship between them ensures the effective transmission of force and prevents any form of energy loss. This connection method allows the motor bracket to fully utilize the characteristics of the fixed base plate and the third spring to achieve its own stable fixation.

[0038] This positioning system consisting of the left connecting block 601, the right connecting block 602, the third spring 603 and the fixed bottom plate 604 shows the ingenuity and excellent skills of the engineers. Together, they form a flexible support structure that can withstand various external impacts and internal vibrations to ensure the stable operation of the motor bracket. At the same time, this design also makes the maintenance and replacement of the equipment more convenient, greatly improving the practicality and service life of the equipment.

[0039] The working process of the utility model is as follows: during operation, the motor drives the impeller to rotate and generate airflow. The airflow enters the fan body through the air inlet, is accelerated by the impeller, and then is sucked into the shell and continues to flow. In this process, components such as the buffer pad and the positioning block play a role in reducing noise, reducing the noise generated by the motor. At the same time, the structural design of the positioning block and the motor bracket also ensures the stability and safety of the motor and the impeller.

[0040] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An axial flow fan with noise reduction function, characterized in that: include: A shell (1), wherein both ends of the shell (1) are provided with protective plates (2), a motor bracket (3) is provided inside the shell (1), the motor bracket (3) is fixedly connected to a motor (4), one side of the motor (4) is provided with an impeller (5), a bearing plate (301) is provided inside the motor bracket (3), a buffer pad (302) is provided below the bearing plate (301), a spring (303) is provided below the buffer pad (302), and a positioning block (6) is provided on one side of the motor bracket (3) close to the rotating shaft of the motor (4), and the positioning block (6) is tightly pressed against the motor bracket (3).

2. The axial flow fan with noise reduction function according to claim 1, characterized in that: An air inlet hole (304) is provided on a side of the motor bracket (3) close to the impeller. The air inlet hole (304) is conical in shape, and has the largest inner diameter on the side close to the motor (4).

3. The axial flow fan with noise reduction function according to claim 2, characterized in that: The buffer pad (302) comprises an upper rubber pad (305), one end of a second spring (306) is fixedly connected to the lower portion of the upper rubber pad (305), the other end of the second spring (306) is fixedly connected to a lower rubber pad (307), and the lower rubber pad (307) is tightly pressed against one end of the bearing plate (301).

4. The axial flow fan with noise reduction function according to claim 3, characterized in that: A fixing plate (308) is provided inside the upper rubber pad (305), and the fixing plate (308) is fixedly connected to the motor bracket (3).

5. The axial flow fan with noise reduction function according to claim 4, characterized in that: The positioning block (6) is composed of a left connecting block (601) and a right connecting block (602), and a third spring (603) is provided inside the left connecting block (601) and the right connecting block (602). The third spring (603) is tightly pressed against the fixed base plate (604), and the fixed base plate (604) is tightly pressed against the motor bracket 3().

6. The axial flow fan with noise reduction function according to claim 5, characterized in that: The output shaft of the motor (4) passes through the positioning block (6) and one side of the motor bracket (3) and is fixedly connected to the impeller (5).

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