A fan device noise reduction device

Abstract

The utility model discloses a fan equipment noise reduction device, including main part, buffer mechanism and barrier mechanism, buffer mechanism sets up one end of main part, and buffer mechanism is away from the one end of main part and is provided with the folding connecting pipe, and the barrier mechanism is connected in the one end of folding connecting pipe, buffer mechanism inside is provided with the barrier shunt piece, and the both sides symmetrical of barrier shunt piece are provided with rotatable fan blade, through the cooperation of fan blade and damper spring, utilize the barrier shunt piece and carry out the reduction of noise, and then cooperate the barrier of fan blade, make the noise of fan exhaust wind reach the minimum, reduce the influence of the noise when discharging to the surrounding environment.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine noise reduction technology, and more specifically, to a noise reduction device for wind turbine equipment. Background Technology

[0002] Noise pollution is a problem inherent in existing fan equipment, especially in applications requiring high cleanliness (such as cleanrooms and laboratories). This invention aims to address the following technical challenges: When the motor drives the impeller to rotate at high speed, broadband noise (including mechanical vibration noise and airflow turbulence noise) generated inside the fan is transmitted to the external environment through pipes, causing significant noise pollution. Traditional noise reduction solutions, due to structural limitations and the simplification of acoustic treatment, struggle to achieve efficient noise suppression. To address these issues, this invention proposes a fan noise reduction device integrating buffering and blocking mechanisms. Through multi-stage sound energy attenuation and airflow optimization design, it systematically reduces noise propagation intensity, meeting the quiet operation requirements of sound-sensitive environments. Utility Model Content

[0003] In order to solve at least one of the above-mentioned technical problems, this utility model proposes a noise reduction device for fan equipment.

[0004] The first aspect of this utility model provides a noise reduction device for a fan equipment, comprising: a main body, a buffer mechanism, and a blocking mechanism;

[0005] The buffer mechanism is disposed at one end of the main body, and a folded connecting tube is provided at the end of the buffer mechanism away from the main body. The blocking mechanism is connected to one end of the folded connecting tube.

[0006] The buffer mechanism is equipped with a flow-diverting block inside, and rotatable fan blades are symmetrically arranged on both sides of the flow-diverting block.

[0007] In a preferred embodiment of the present invention, the buffer mechanism includes a noise reduction box and a slide groove, the slide groove being disposed on one side of the noise reduction box, and a limit rod being disposed inside the slide groove.

[0008] In a preferred embodiment of the present invention, a sliding block is provided inside the groove, and the main body is installed at one end of the sliding block.

[0009] In a preferred embodiment of this utility model, an inner rod is provided at each of the four corners of the bottom of the noise reduction box, and a damping spring is provided at the bottom of the inner rod.

[0010] In a preferred embodiment of this utility model, a sleeve is fitted on the outer bottom of the inner rod, and a groove is provided inside the sleeve, with the damping spring disposed within the groove.

[0011] In a preferred embodiment of this utility model, sound-insulating sponge is provided on the inner wall of the noise reduction box.

[0012] In a preferred embodiment of this utility model, an exhaust trough is provided inside the main body, and a dustproof net is provided on the inner side of one end of the exhaust trough.

[0013] In a preferred embodiment of the present invention, the blocking mechanism includes an air inlet, and a limit block is provided inside the air inlet.

[0014] In a preferred embodiment of this utility model, an installation frame is provided inside the air inlet, an opening is provided on the inner side of the installation frame, and a fixing bolt is provided on the outer side of the installation frame.

[0015] In a preferred embodiment of this utility model, a baffle plate is provided inside the air inlet.

[0016] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0017] This application utilizes an optimized duct system design to alter airflow velocity and pressure changes, mechanically reducing the aerodynamic noise of the fan. Through the combination of fan blades and damping springs, noise is reduced using obstruction and diversion blocks. The obstruction by the fan blades further minimizes the noise from the exhaust air, reducing its impact on the surrounding environment. Simultaneously, the wind force dispersed due to the obstruction and diversion blocks is buffered by the damping springs, reducing noise from collisions with the inner wall of the noise reduction chamber. Furthermore, the sound-absorbing foam inside the noise reduction chamber isolates the collision sound, achieving a secondary noise reduction effect, thus reducing noise during the noise reduction process and preventing noise pollution. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, some of the drawings in the following description are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the noise reduction device for a fan unit according to an embodiment of this utility model;

[0020] Figure 2 This is a side sectional view of the noise reduction device for a fan unit according to an embodiment of this utility model;

[0021] Figure 3 This is an enlarged view of section A of embodiment A of this utility model;

[0022] Figure 4 This is a cross-sectional view of the connection between the inner rod and the sleeve in an embodiment of this utility model.

[0023] In the diagram: 1. Main body; 2. Buffer mechanism; 3. Barrier mechanism; 4. Folded connecting pipe; 5. Exhaust duct; 6. Dustproof net; 7. Sliding block; 201. Noise reduction box; 202. Slide groove; 203. Limiting rod; 204. Sound insulation sponge; 205. Fan blade; 206. Barrier and diversion block; 207. Inner rod; 208. Sleeve; 209. Container groove; 210. Damping spring; 301. Air inlet; 302. Limiting block; 303. Opening; 304. Mounting frame; 305. Fixing bolt; 306. Baffle plate. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] Example 1

[0027] See Figures 1-4 As shown, this utility model proposes a noise reduction device for a fan, comprising: a main body 1, a buffer mechanism 2, and a blocking mechanism 3;

[0028] The buffer mechanism 2 is located at one end of the main body 1, and the end of the buffer mechanism 2 away from the main body 1 is provided with a folded connecting tube 4. The blocking mechanism 3 is connected to one end of the folded connecting tube 4.

[0029] The buffer mechanism 2 is equipped with a flow divider block 206, and rotatable fan blades 205 are symmetrically arranged on both sides of the flow divider block 206.

[0030] According to an embodiment of the present invention, the buffer mechanism 2 includes a noise reduction box 201 and a slide 202. The slide 202 is disposed on one side of the noise reduction box 201, and a limit rod 203 is disposed inside the slide 202.

[0031] According to an embodiment of the present invention, a sliding block 7 is provided inside the sliding groove 202, and the main body 1 is installed at one end of the sliding block 7.

[0032] According to an embodiment of the present invention, an inner rod 207 is provided at each of the four corners of the bottom of the noise reduction box 201, and a damping spring 210 is provided at the bottom of the inner rod 207.

[0033] According to an embodiment of the present invention, a sleeve 208 is sleeved on the outer side of the bottom of the inner rod 207, and a receiving groove 209 is provided inside the sleeve 208, and a damping spring 210 is disposed in the receiving groove 209.

[0034] According to an embodiment of the present invention, a sound-insulating sponge 204 is provided on the inner wall of the noise reduction box 201.

[0035] According to an embodiment of the present invention, an exhaust duct 5 is provided inside the main body 1, and a dustproof net 6 is provided on the inner side of one end of the exhaust duct 5.

[0036] According to an embodiment of the present invention, the barrier mechanism 3 includes an air inlet 301, and a limiting block 302 is provided inside the air inlet 301.

[0037] According to an embodiment of the present utility model, an installation frame 304 is provided inside the air inlet 301, an opening 303 is provided on the inner side of the installation frame 304, and a fixing bolt 305 is provided on the outer side of the installation frame 304.

[0038] According to an embodiment of the present invention, a baffle plate 306 is provided inside the air inlet 301.

[0039] The working principle of the noise reduction device is as follows:

[0040] Before use, connect the exhaust port of the fan to the inlet 301, and then fix the sleeve 208 and sliding block 7 to the ground to ensure normal operation of the device. During use, the inlet 301 guides the airflow, and the baffle 306 diverts the airflow to reduce noise. The folded connecting pipe 4 guides the airflow into the noise reduction box 201, where the baffle 206 further reduces the airflow. Finally, the fan blades 205 block the airflow, minimizing the noise from the exhaust and reducing its impact on the surrounding environment. Simultaneously, the airflow dispersed due to the baffle 206 is buffered by the damping spring 210. The noise from collisions with the inner wall of the noise reduction box 201 is reduced, and the sound-insulating sponge 204 inside the noise reduction box 201 is used to isolate the collision sound, thus achieving a secondary noise reduction effect and reducing noise during the noise reduction process to avoid noise pollution. When the noise reduction box 201 is damping, the limiting rod 203 and the sliding groove 202 are engaged with the sliding block 7 to limit the up and down swing amplitude of the noise reduction box 201 to avoid excessive amplitude. The difference between this device and directly reducing the fan speed for noise reduction is that directly reducing the fan speed will affect the efficiency of the device, while this device can reduce noise at the original fan speed without affecting the discharge efficiency, thus achieving low-loss noise reduction.

[0041] In summary, this application utilizes an optimized duct system design to alter airflow velocity and pressure changes, mechanically reducing the aerodynamic noise of the fan. Through the combination of the fan blades 205 and damping springs 210, and the use of the obstruction and diversion block 206, noise is reduced. Furthermore, the obstruction provided by the fan blades 205 minimizes the noise from the exhaust air, reducing its impact on the surrounding environment. Simultaneously, the wind force dispersed by the obstruction and diversion block 206 is buffered by the damping spring 210, reducing noise from collisions with the inner wall of the noise reduction chamber 201. The sound-absorbing foam 204 inside the noise reduction chamber 201 further isolates the collision sound, achieving a secondary noise reduction effect, reducing noise during the noise reduction process and preventing noise pollution.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0044] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A noise reduction device for wind turbine equipment, comprising: The main body, buffer mechanism, and barrier mechanism are characterized in that, The buffer mechanism is disposed at one end of the main body, and a folded connecting tube is provided at the end of the buffer mechanism away from the main body. The blocking mechanism is connected to one end of the folded connecting tube. The buffer mechanism is equipped with a flow-diverting block inside, and rotatable fan blades are symmetrically arranged on both sides of the flow-diverting block.

2. The noise reduction device for a fan equipment according to claim 1, characterized in that, The buffer mechanism includes a noise reduction box and a slide. The slide is located on one side of the noise reduction box, and a limit rod is provided inside the slide.

3. The noise reduction device for a fan equipment according to claim 2, characterized in that, A sliding block is provided inside the groove, and the main body is installed at one end of the sliding block.

4. The noise reduction device for a fan equipment according to claim 2, characterized in that, The noise reduction box has inner rods at each of its four bottom corners, and damping springs are installed at the bottom of the inner rods.

5. A noise reduction device for a fan equipment according to claim 4, characterized in that, A sleeve is fitted on the outer bottom of the inner rod, and a groove is provided inside the sleeve, with the damping spring disposed within the groove.

6. A noise reduction device for a fan equipment according to claim 2, characterized in that, The inner wall of the noise reduction box is equipped with sound-insulating sponge.

7. The noise reduction device for a fan equipment according to claim 1, characterized in that, The main body is provided with an exhaust duct, and a dustproof net is provided on the inner side of one end of the exhaust duct.

8. A noise reduction device for a fan equipment according to claim 2, characterized in that, The barrier mechanism includes an air inlet, and a limit block is provided inside the air inlet.

9. A noise reduction device for a fan equipment according to claim 8, characterized in that, An installation frame is provided inside the air inlet, with an opening on the inner side of the installation frame and a fixing bolt on the outer side of the installation frame.

10. A noise reduction device for a fan equipment according to claim 8, characterized in that, A baffle plate is installed inside the air inlet.

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