A low-noise fan for air-cooled coolers

Abstract

This utility model discloses a low-noise fan for an air-cooled cooler, including a noise-reducing shell and a fan box. The noise-reducing shell has a carbon fiber reinforced plastic layer inside, and a titanium alloy sheet is placed on the inner wall of the carbon fiber reinforced plastic layer. A fiberglass sheet is placed on the inner wall of the titanium alloy sheet. The upper end of the noise-reducing shell has mounting holes. This low-noise fan for an air-cooled cooler uses a snap-fit ​​connection between the mounting holes and mounting rods to facilitate the assembly of the cover frame. The connecting mesh provides some protection against debris while ensuring that the airflow speed is not affected. The snap-fit ​​structure also facilitates the disassembly, cleaning, and replacement of the connecting mesh, ensuring its cleanliness. The carbon fiber reinforced plastic layer has high damping performance, with a damping ratio of over [value missing], which can quickly attenuate vibration energy, thereby reducing noise. The titanium alloy sheet adjusts the material's natural frequency to avoid the excitation frequency, reducing resonance noise.

Description

Technical Field

[0001] This utility model relates to the field of air-cooled cooler technology, specifically to a low-noise fan for an air-cooled cooler. Background Technology

[0002] An air-cooled cooler is a cooling device that uses air as the heat exchange medium. It removes heat through air convection, thus achieving a cooling effect. It is often called an air cooler, oil cooler, or air-cooled oil cooler. The working principle of an air-cooled cooler is the exchange of heat between external air and an internal fluid. An internal fan draws in outside air and transfers heat to it through a heat exchanger, achieving a cooling effect. This cooling method does not require water or other liquid media, thus offering advantages such as easy installation and low maintenance costs. Low-noise fans in air-cooled coolers are devices that dissipate heat through forced air convection. Their core feature is utilizing ambient air as the cooling medium, eliminating the need for a cooling water system. The application of low-noise fans in air-cooled coolers primarily aims to reduce noise during operation while ensuring effective heat dissipation. Air-cooled coolers are widely used in various applications requiring refrigeration or cooling, such as commercial buildings, industrial refrigeration, data centers, and communication base stations. Because they do not rely on a cooling water system, they are suitable for use in water-scarce areas or areas with poor water quality.

[0003] As per application number CN201920168117.9, this utility model relates to a low-noise fan, comprising a volute and several blades. The volute has an air inlet and an air outlet. The blades surround the air inlet, and multiple air ducts extend from the air inlet to the air outlet. The two ends of each air duct are connected to the air inlet and the air outlet, respectively. The blades rotate under the drive of a power device, forming an airflow. The airflow passes through the air ducts and is discharged from the air outlet. By setting several independent air ducts inside the volute, the airflow formed by the rotation of the blades enters different air ducts at the air inlet and is discharged from the air outlet. The airflow in different air ducts does not collide or interfere, reducing the number of airflow collisions within the fan, avoiding resonance, reducing fan noise, and preventing the airflow from decreasing in speed or stagnating due to mutual collisions, thereby increasing the airflow speed at the air outlet and optimizing the fan's performance. (ESM) A similar invention has been applied for a patent on the same day.

[0004] The above applications currently have the following shortcomings:

[0005] The outer shell material is thin, and it will generate noise due to vibration during use, which will affect the working environment.

[0006] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a low-noise fan for an air-cooled cooler in order to achieve a more practical purpose. Utility Model Content

[0007] The purpose of this invention is to provide a low-noise fan for an air-cooled cooler to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a low-noise fan for an air-cooled cooler, comprising a noise-reducing shell and a fiberglass sheet, wherein a carbon fiber reinforced plastic layer is disposed inside the noise-reducing shell, and a titanium alloy sheet is disposed on the inner wall of the carbon fiber reinforced plastic layer, the fiberglass sheet is disposed on the inner wall of the titanium alloy sheet, and an installation hole is provided at the upper end of the noise-reducing shell.

[0009] Furthermore, a mounting rod is inserted through the mounting hole, and a cover frame is provided at the upper end of the mounting rod.

[0010] Furthermore, a connecting mesh is installed inside the cover frame, and the mounting rods are distributed in a ring shape about the center of the cover frame.

[0011] Furthermore, the inner wall of the noise-reducing housing is provided with an elastic block, and the end of the elastic block is provided with a connecting frame.

[0012] Furthermore, a rotating shaft is installed inside the connecting frame, and a heat dissipation fan blade is provided on the outer wall of the rotating shaft.

[0013] Furthermore, a connecting shaft is installed at the bottom of the connecting frame, and a servo motor is installed at the bottom of the connecting shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model facilitates the assembly of the cover frame through the interlocking connection between the mounting holes and the mounting rods. The connecting mesh provides some protection against debris while ensuring that wind speed remains unaffected. The interlocking structure also allows workers to easily disassemble, clean, and replace the connecting mesh, maintaining its cleanliness. The carbon fiber reinforced plastic layer possesses high damping performance, with a damping ratio exceeding [value missing], enabling rapid attenuation of vibration energy and reducing noise. The titanium alloy sheet adjusts the material's natural frequency to avoid the excitation frequency, reducing resonance noise. The fiberglass sheet, composed of glass fiber and resin composites, has a dense structure that effectively blocks sound transmission. The elastic block buffers the vibration force of the connecting frame on the noise-reducing shell, ensuring the stability of the noise-reducing shell while reducing noise generation. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the main structure of a low-noise fan for an air-cooled cooler according to the present invention.

[0017] Figure 2 This is a bottom-view three-dimensional structural diagram of a low-noise fan for an air-cooled cooler according to this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of a low-noise fan housing for an air-cooled cooler according to the present invention.

[0019] In the diagram: 1. Noise-reducing housing; 2. Mounting hole; 3. Mounting rod; 4. Cover frame; 5. Connecting mesh; 6. Elastic block; 7. Connecting frame; 8. Rotating shaft; 9. Cooling fan blade; 10. Connecting shaft; 11. Servo motor; 12. Carbon fiber reinforced plastic layer; 13. Titanium alloy sheet; 14. Fiberglass sheet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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 some embodiments of this utility model, but not all embodiments.

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example

[0023] like Figures 1-3 As shown, it includes a noise-reducing shell 1 and a fiberglass sheet 14. The interior of the noise-reducing shell 1 is provided with a carbon fiber reinforced plastic layer 12, and a titanium alloy sheet 13 is placed on the inner wall of the carbon fiber reinforced plastic layer 12. The fiberglass sheet 14 is placed on the inner wall of the titanium alloy sheet 13. An installation hole 2 is provided at the upper end of the noise-reducing shell 1.

[0024] In summary: the interlocking connection between mounting hole 2 and mounting rod 3 facilitates the assembly of the cover frame 4, and the connecting net 5, while providing some protection against debris, ensures that the wind speed is not affected. The interlocking structure also makes it easy for workers to disassemble the connecting net 5 for cleaning and replacement, ensuring its cleanliness. The carbon fiber reinforced plastic layer 12 has high damping performance, with a damping ratio exceeding 0.05, enabling rapid attenuation of vibration energy and reducing noise. The titanium alloy sheet 13 adjusts the material's natural frequency to avoid the excitation frequency, reducing resonance noise. The fiberglass sheet 14, composed of glass fiber and resin composite, has a dense structure that effectively blocks sound transmission.

[0025] like Figures 1-3As shown, a mounting rod 3 is inserted through the mounting hole 2, and a cover frame 4 is provided at the upper end of the mounting rod 3. A connecting mesh 5 is placed inside the cover frame 4, and the mounting rod 3 is distributed in a ring shape about the center of the cover frame 4. An elastic block 6 is provided on the inner wall of the noise reduction housing 1, and a connecting frame 7 is provided at the end of the elastic block 6. A rotating shaft 8 is installed inside the connecting frame 7, and a heat dissipation fan blade 9 is provided on the outer wall of the rotating shaft 8. A connecting shaft 10 is installed at the bottom end of the connecting frame 7, and a servo motor 11 is installed at the bottom end of the connecting shaft 10.

[0026] In summary: the elastic block 6 can buffer the vibration force of the connecting frame 7 on the noise reduction housing 1, ensuring the stability of the noise reduction housing 1 while reducing the generation of noise.

[0027] Working principle: When this type of air-cooled cooler's low-noise fan is in use, it first... Figures 1-3 Align the mounting rods 3 one by one with the mounting holes 2. After alignment, apply pressure to the mounting rods 3 so that they can enter the interior of the mounting holes 2, thereby connecting the connecting mesh 5 to the noise reduction housing 1. The locking structure also facilitates the disassembly of the connecting mesh 5 by the staff for cleaning and replacement, ensuring the cleanliness of the connecting mesh 5. Turn on the servo motor 11 to make the cooling fan blades 9 rotate, which drives the airflow. The connecting mesh 5 provides a certain degree of dust prevention while ensuring that the airflow speed is not affected. When the cooling fan blades 9 rotate, the connecting frame 7 will generate vibration force, and the elastic block 6 has a certain degree of elasticity. The structure can buffer the vibration force of the connecting frame 7 on the noise reduction shell 1, ensuring the stability of the noise reduction shell 1 while reducing noise generation. The noise reduction shell 1 contains a carbon fiber reinforced plastic layer 12, a titanium alloy sheet 13, and a fiberglass sheet 14. The carbon fiber reinforced plastic layer 12 has high damping performance, with a damping ratio of over 0.05, which can quickly attenuate vibration energy, thereby reducing noise. The titanium alloy sheet 13 adjusts the natural frequency of the material to avoid the excitation frequency and reduce resonance noise. The fiberglass sheet 14 is made of glass fiber and resin composite, with a dense structure that can effectively block sound transmission.

[0028] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A low-noise fan for an air-cooled cooler, comprising a noise-reducing housing (1) and fiberglass sheets (14), characterized in that, The noise-reducing shell (1) has a carbon fiber reinforced plastic layer (12) inside, and a titanium alloy sheet (13) is placed on the inner wall of the carbon fiber reinforced plastic layer (12). The fiberglass sheet (14) is placed on the inner wall of the titanium alloy sheet (13). The noise-reducing shell (1) has an installation hole (2) at the upper end.

2. The low-noise fan for an air-cooled cooler according to claim 1, characterized in that, An installation rod (3) is inserted through the mounting hole (2), and a cover frame (4) is provided at the upper end of the installation rod (3).

3. The low-noise fan for an air-cooled cooler according to claim 2, characterized in that, The cover frame (4) is equipped with a connecting net (5), and the mounting rods (3) are distributed in a ring shape about the center of the cover frame (4).

4. The low-noise fan for an air-cooled cooler according to claim 1, characterized in that, The inner wall of the noise reduction housing (1) is provided with an elastic block (6), and the end of the elastic block (6) is provided with a connecting frame (7).

5. A low-noise fan for an air-cooled cooler according to claim 4, characterized in that, The connecting frame (7) is equipped with a rotating shaft (8), and the outer wall of the rotating shaft (8) is provided with heat dissipation fan blades (9).

6. A low-noise fan for an air-cooled cooler according to claim 4, characterized in that, The bottom of the connecting frame (7) is equipped with a connecting shaft (10), and the bottom of the connecting shaft (10) is equipped with a servo motor (11).

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