Axial fan blade noise reduction device

Abstract

The utility model relates to fan blade noise reduction technical field discloses a kind of axial fan blade noise reduction device, including base, the upper surface of base is provided with buffer assembly, the upper surface of buffer assembly is fixedly connected with driving motor, the output end of driving motor is connected with rotating shaft, the outer wall of rotating shaft is fixedly connected with connecting column, the outer wall of connecting column is provided with blade, the outer wall of blade is provided with porous coating, buffer assembly includes bottom plate, the upper surface of bottom plate is fixedly connected in the upper surface of base, the upper surface of bottom plate is fixedly connected with support column, the inside sliding connection of support column has sliding column, the outer wall of sliding column is provided with first spring. In the utility model, the rotating shaft of driving motor output end drives connecting column and blade rotation, finally further absorbs airflow noise, to reduce the noise generated when blade rotates, improve the protection and the effect of running quietness to human health.

Description

Technical Field

[0001] This utility model relates to the field of fan blade noise reduction technology, and in particular to an axial flow fan blade noise reduction device. Background Technology

[0002] Fan blades are sheet-like structures mounted on rotating parts that drive the flow of gas or liquid through rotation. They are commonly found in equipment such as fans and blowers, and can convert mechanical energy into the kinetic energy of fluids. With the continuous increase in the power of modern industrial equipment and the intensification of the trend of miniaturization and high performance of electronic products, the heat generated during equipment operation has increased dramatically, which puts forward higher requirements for heat dissipation efficiency. Axial flow fan blade devices, through unique blade design and aerodynamic principles, can achieve high flow rate and high air pressure air delivery in a small space, quickly remove the heat from the equipment, and maintain the stable operation of the equipment.

[0003] However, when the blades of a traditional axial flow fan rotate at high speed, the friction between the blades and the air generates noise, causing noise pollution to the working environment or living space, and long-term exposure can affect human health. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an axial flow fan blade noise reduction device, which aims to improve the problem of noise generated by the friction between the blades and the air when the fan blades of traditional axial flow fan blade devices rotate at high speed.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A noise reduction device for axial flow fan blades includes a base, a buffer assembly is provided on the upper surface of the base, a drive motor is fixedly connected to the upper surface of the buffer assembly, a rotating shaft is connected to the output end of the drive motor, a connecting column is fixedly connected to the outer wall of the rotating shaft, a blade is provided on the outer wall of the connecting column, and a porous coating is provided on the outer wall of the blade.

[0007] Preferably, the buffer assembly includes a base plate, the upper surface of which is fixedly connected to the upper surface of the base, a support column fixedly connected to the upper surface of the base plate, a sliding column slidably connected inside the support column, a first spring provided on the outer wall of the sliding column, the bottom end of the first spring fixedly connected to the top end of the support column, the top end of the sliding column fixedly connected to the outer wall of the drive motor, a flow guide shroud fixedly connected to the upper surface of the base, sound-absorbing cotton provided inside the flow guide shroud, and a grid shell fixedly connected inside the flow guide shroud.

[0008] Preferably, the blade has a groove inside, and a fixing plate is fixedly connected to the outer wall of the blade.

[0009] Preferably, a fixing post is slidably connected inside the fixing plate, a sliding plate is fixedly connected to the outer wall of the fixing post, the outer wall of the sliding plate is slidably connected inside the sliding groove, and a pull ring is fixedly connected to the top of the fixing post.

[0010] Preferably, the outer wall of the fixing column is provided with a second spring, and the bottom end of the second spring is fixedly connected to the top of the slide plate.

[0011] Preferably, a third spring is provided inside the fixing column, and a buckle is fixedly connected to one end of the third spring.

[0012] Preferably, the connecting column has a first limiting groove inside and a second limiting groove inside.

[0013] Preferably, the outer wall of the fixing column is disposed inside the first limiting groove, and the outer wall of the buckle is engaged inside the second limiting groove.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the shaft at the output end of the drive motor drives the connecting column and blades to rotate, which further absorbs airflow noise, thereby reducing the noise generated when the blades rotate and improving the protection of human health and the quietness of operation.

[0016] 2. In this utility model, pulling the pull ring moves the fixing column, eventually causing the fixing column to disengage from the first limiting groove and the blade to be removed, thereby achieving quick disassembly of the blade and facilitating maintenance, repair and cleaning of the blade. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an axial flow fan blade noise reduction device proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of a partial blade structure of an axial flow fan blade noise reduction device proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the fixing plate of the axial flow fan blade noise reduction device proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the fixing column of the axial flow fan blade noise reduction device proposed in this utility model;

[0021] Figure 5 This is a partial structural diagram of the third spring in an axial flow fan blade noise reduction device proposed in this utility model.

[0022] Legend:

[0023] 1. Base; 2. Base plate; 3. Support column; 4. Sliding column; 5. First spring; 6. Drive motor; 7. Rotating shaft; 8. Connecting column; 9. Blade; 10. Porous coating; 11. Shield; 12. Sound-absorbing cotton; 13. Grille shell; 14. Slide groove; 15. Fixing plate; 16. Fixing column; 17. Slide plate; 18. Second spring; 19. Pull ring; 20. Third spring; 21. Buckle; 22. First limiting groove; 23. Second limiting groove. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Reference Figures 1-2 An embodiment of this utility model is provided: an axial flow fan blade noise reduction device, including a base 1, a buffer assembly is provided on the upper surface of the base 1, a drive motor 6 is fixedly connected to the upper surface of the buffer assembly, a rotating shaft 7 is connected to the output end of the drive motor 6, a connecting column 8 is fixedly connected to the outer wall of the rotating shaft 7, a blade 9 is provided on the outer wall of the connecting column 8, and a porous coating 10 is provided on the outer wall of the blade 9.

[0026] Specifically, the base 1 provides a stable mounting foundation for the entire axial fan blade noise reduction device. The buffer assembly reduces the vibration generated during the operation of the drive motor 6 and reduces the transmission of vibration to the external structure through the base 1. The drive motor 6 provides power to drive the connecting column 8 and the blade 9 to rotate through the rotating shaft 7. The rotating shaft 7 transmits the rotational power of the drive motor 6 to the connecting column 8 and the blade 9. The connecting column 8 connects the blade 9 and drives it to rotate. The blade 9 promotes airflow through rotation, realizing the ventilation and heat dissipation function of the axial fan blade. The porous coating 10 absorbs medium and high frequency noise, thereby reducing the noise generated when the fan blade rotates and reducing the noise propagation effect.

[0027] Reference Figures 1-2 The buffer assembly includes a base plate 2, the upper surface of which is fixedly connected to the upper surface of the base 1. A support column 3 is fixedly connected to the upper surface of the base plate 2. A sliding column 4 is slidably connected inside the support column 3. A first spring 5 is provided on the outer wall of the sliding column 4. The bottom end of the first spring 5 is fixedly connected to the top end of the support column 3. The top end of the sliding column 4 is fixedly connected to the outer wall of the drive motor 6. A flow guide shroud 11 is fixedly connected to the upper surface of the base 1. Sound-absorbing cotton 12 is provided inside the flow guide shroud 11. A grid shell 13 is fixedly connected inside the flow guide shroud 11.

[0028] Specifically, the base plate 2 provides an installation position for other buffer components such as the support column 3. The support column 3 supports the sliding column 4. The sliding column 4 slides up and down within the support column 3 as the drive motor 6 vibrates. The first spring 5 absorbs the energy generated by the vibration of the drive motor 6 through its own elastic deformation, thus playing a shock absorption role. The air guide 11 guides the airflow evenly through the blade 9. The sound-absorbing cotton 12 absorbs the noise generated when the airflow passes through. The grille shell 13 is used to fix and support the air guide 11, thereby achieving the effect of reducing vibration noise and improving the quietness of operation.

[0029] Reference Figures 3-5 The blade 9 has a groove 14 inside, and a fixing plate 15 is fixedly connected to the outer wall of the blade 9. A fixing post 16 is slidably connected inside the fixing plate 15, and a sliding plate 17 is fixedly connected to the outer wall of the fixing post 16. The outer wall of the sliding plate 17 is slidably connected inside the groove 14. A pull ring 19 is fixedly connected to the top of the fixing post 16. A second spring 18 is provided on the outer wall of the fixing post 16, and the bottom end of the second spring 18 is fixedly connected to the top of the sliding plate 17. A third spring 20 is provided inside the fixing post 16, and a buckle 21 is fixedly connected to one end of the third spring 20. A first limiting groove 22 is provided inside the connecting post 8, and a second limiting groove 23 is provided inside the connecting post 8. The outer wall of the fixing post 16 is located inside the first limiting groove 22, and the outer wall of the buckle 21 is engaged inside the second limiting groove 23.

[0030] Specifically, the slide 14 provides a track for the sliding of the slide plate 17, the fixing plate 15 supports the sliding of the fixing column 16, the fixing column 16 cooperates with the first limiting groove 22 to fix the blade 9, the slide plate 17 compresses and unfolds the second spring 18, the pull ring 19 facilitates the user to manually pull the fixing column 16, the second spring 18 provides elastic force, the third spring 20 provides elastic force for the buckle 21 to snap into the second limiting groove 23 to fix the position of the blade 9, the buckle 21 cooperates with the second limiting groove 23 to fix the position of the blade 9, the second limiting groove 23 cooperates with the buckle 21 to fix the fixing column 16, and the first limiting groove 22 restricts the position of the fixing column 16, thereby enabling timely cleaning and maintenance of the blade 9 and reducing equipment downtime.

[0031] Working principle: When this axial flow fan blade noise reduction device is needed, the drive motor 6 is started first. The shaft 7 at the output end of the drive motor 6 drives the connecting column 8 and the blade 9 to rotate. During this process, the vibration generated by the drive motor 6 causes the sliding column 4 to slide, thereby causing the first spring 5 to extend and retract, thus reducing the transmission of vibration to the base 1. Then, the porous coating 10 absorbs mid-to-high frequency noise, and the guide shroud 11 guides the airflow evenly through the blade 9 and the sound-absorbing cotton 12 to further absorb the airflow noise, thereby reducing the noise generated when the blade 9 rotates and improving the protection of human health and the quietness of operation.

[0032] When it is necessary to disassemble the blade 9, first pull the pull ring 19, thereby moving the fixing post 16, causing the slide plate 17 to slide and compress the second spring 18, while compressing the third spring 20, causing the buckle 21 to disengage from the second limiting groove 23; at this time, the slide plate 17 slides along the slide groove 14, thereby causing the fixing post 16 to disengage from the first limiting groove 22, and finally the blade 9 is removed, thus achieving quick disassembly of the blade 9, which facilitates maintenance, repair and cleaning of the blade 9.

[0033] 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 noise reduction device for axial flow fan blades, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a buffer assembly, and a drive motor (6) is fixedly connected to the upper surface of the buffer assembly. The output end of the drive motor (6) is connected to a rotating shaft (7). A connecting column (8) is fixedly connected to the outer wall of the rotating shaft (7). A blade (9) is provided on the outer wall of the connecting column (8). A porous coating (10) is provided on the outer wall of the blade (9).

2. The axial flow fan blade noise reduction device according to claim 1, characterized in that: The buffer assembly includes a base plate (2), the upper surface of which is fixedly connected to the upper surface of the base (1), a support column (3) is fixedly connected to the upper surface of the base plate (2), a sliding column (4) is slidably connected inside the support column (3), a first spring (5) is provided on the outer wall of the sliding column (4), the bottom end of the first spring (5) is fixedly connected to the top end of the support column (3), the top end of the sliding column (4) is fixedly connected to the outer wall of the drive motor (6), a flow guide (11) is fixedly connected to the upper surface of the base (1), a sound-absorbing cotton (12) is provided inside the flow guide (11), and a grid shell (13) is fixedly connected inside the flow guide (11).

3. The axial flow fan blade noise reduction device according to claim 2, characterized in that: The blade (9) has a groove (14) inside, and a fixing plate (15) is fixedly connected to the outer wall of the blade (9).

4. The axial flow fan blade noise reduction device according to claim 3, characterized in that: The fixed plate (15) is slidably connected to a fixed column (16), and the outer wall of the fixed column (16) is fixedly connected to a sliding plate (17). The outer wall of the sliding plate (17) is slidably connected to the inside of the sliding groove (14), and the top of the fixed column (16) is fixedly connected to a pull ring (19).

5. The axial flow fan blade noise reduction device according to claim 4, characterized in that: The outer wall of the fixed column (16) is provided with a second spring (18), and the bottom end of the second spring (18) is fixedly connected to the top end of the slide plate (17).

6. The axial flow fan blade noise reduction device according to claim 4, characterized in that: The fixed column (16) is provided with a third spring (20) inside, and a buckle (21) is fixedly connected to one end of the third spring (20).

7. The axial flow fan blade noise reduction device according to claim 1, characterized in that: The connecting column (8) has a first limiting groove (22) inside and a second limiting groove (23) inside.

8. The axial flow fan blade noise reduction device according to claim 6, characterized in that: The outer wall of the fixed column (16) is located inside the first limiting groove (22), and the outer wall of the buckle (21) is engaged inside the second limiting groove (23).

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