A silent, noise-reducing, temperature-controlled speed-regulating cooling fan

Abstract

This utility model discloses a silent, noise-reducing, temperature-controlled speed-regulating cooling fan, relating to the field of cooling fans. It includes a cooling fan body with an outer shell. The outer shell of the cooling fan body has a noise-reducing mechanism for lowering noise. The noise-reducing mechanism includes a fixed frame fixedly installed on the outer shell of the cooling fan body, with sound-absorbing holes and airflow channels on the inner wall of the fixed frame. A sound-insulating layer is fixedly installed inside the fixed frame, and a shock-absorbing layer is fixedly installed on the outer wall of the fixed frame, with a limiting block fixedly installed on the outer wall of the shock-absorbing layer. The end of the outer shell has a fixing mechanism for easy disassembly and assembly of the cooling fan body. This silent, noise-reducing, temperature-controlled speed-regulating cooling fan can reflect, refract, and absorb sound waves generated during fan operation, reducing noise intensity. It also effectively buffers vibrations generated during fan operation, preventing vibrations from being transmitted to the outer shell and causing additional noise, thus achieving efficient noise reduction and creating a quiet operating environment for users.

Description

Technical Field

[0001] This utility model relates to the field of cooling fan technology, specifically a silent, noise-reducing, temperature-controlled speed-regulating cooling fan. Background Technology

[0002] A cooling fan is a heat dissipation component that uses high-speed rotating blades to drive airflow, transferring heat from a heat source to the surrounding air to achieve cooling and ensure the normal operation of equipment. It is widely used in instruments and equipment such as computers, communication products, optoelectronic products, consumer electronics, automotive electronic equipment, and medical equipment.

[0003] In the prior art, Chinese Patent No. CN222702191U discloses a DC brushless temperature-controlled speed-regulating cooling fan, including a cooling fan housing. Shell plates are fixedly installed on the front and rear sides of the cooling fan housing. A DC brushless motor body is housed inside the cooling fan housing. The output shaft of the DC brushless motor body is fixedly mounted with fan blades via a coupling. A support frame is provided on the outer wall of the cooling fan housing. Two grooves are formed diagonally at the top and bottom of the cooling fan housing. Two threaded holes are formed on the inner wall of each groove. A mounting base is provided on the inner wall of each groove. Bolts, threaded holes, and screws are provided to install a light on the cooling fan and adjust the lighting angle, facilitating manual adjustment of the cooling fan angle at night, improving the convenience and practicality of the cooling fan. Furthermore, a temperature sensor and a microcontroller are included, allowing for automatic monitoring and control based on ambient temperature, achieving temperature-controlled speed regulation.

[0004] Based on the above information, it can be seen that existing temperature-controlled speed-regulating cooling fans have certain problems in practical use. Because the vibration generated by existing cooling fans during operation is easily transmitted to the equipment casing, it generates a lot of noise and affects the quietness of the operating environment. This noise problem is even more prominent in places with high noise requirements. Therefore, we propose a silent and noise-reducing temperature-controlled speed-regulating cooling fan. Utility Model Content

[0005] The purpose of this utility model is to provide a silent and noise-reducing temperature-controlled speed-regulating cooling fan to solve the problem mentioned in the background art that the vibration generated by the existing cooling fan during operation is easily transmitted to the equipment casing, thereby generating a lot of noise and affecting the quietness of the use environment, especially in places with high noise requirements, where the noise problem is more prominent.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a silent, noise-reducing, temperature-controlled, speed-regulating cooling fan, comprising a cooling fan body, an outer shell on the outer wall of the cooling fan body, a noise reduction mechanism on the outer wall of the cooling fan body for reducing noise, the noise reduction mechanism including a fixed frame fixedly installed on the outer wall of the cooling fan body, and the inner wall of the fixed frame having a sound-absorbing hole and a flow guide groove, a sound insulation layer fixedly installed inside the fixed frame, a shock-absorbing layer fixedly installed on the outer wall of the fixed frame, and a limit block fixedly installed on the outer wall of the shock-absorbing layer, and a fixing mechanism for convenient disassembly and assembly of the cooling fan body at the end of the outer shell.

[0007] Furthermore, the fixed frame has a circular cross-section and its length is greater than that of the cooling fan body. The guide channel has an arc-shaped design and is set at equal angles on the inner wall of the fixed frame. The opening length of the guide channel is the same as that of the fixed frame.

[0008] Furthermore, the sound-absorbing holes penetrate the inner wall of the fixed frame and are arranged in an array on the inner wall of the fixed frame. The sound insulation layer is made of sound-absorbing cotton and has a circular cross-section.

[0009] Furthermore, the outer wall of the shock-absorbing layer is slidably connected to the outer shell, and the outer wall of the shock-absorbing layer is in contact with the inner wall of the outer shell. The shock-absorbing layer is made of rubber. The limiting blocks are distributed at equal angles on the outer wall of the shock-absorbing layer, and the cross-section of the limiting blocks is T-shaped. Limiting grooves are opened at equal angles on the inner wall of the outer shell, and the inner wall of the limiting groove is in contact with the outer wall of the limiting block.

[0010] Furthermore, the fixing mechanism includes a mounting frame that is slidably mounted on the outer wall of the housing, and the outer wall of the mounting frame is provided with a protective cover, and the outer wall of the protective cover is provided with ventilation holes. Guide rods that are evenly distributed are fixedly mounted on the outer wall of the mounting frame. A locking block is slidably mounted on the outer wall of the mounting frame, and an unlocking block is fixedly mounted at the end of the locking block. A reset spring is fixedly mounted on the outer wall of the unlocking block.

[0011] Furthermore, the mounting frame has a circular cross-section, and the outer diameter of the mounting frame is larger than the outer diameter of the sound insulation layer. The outer wall of the outer shell has a mounting groove, and the inner wall of the mounting groove fits against the outer wall of the mounting frame. The inner wall of the mounting groove has a slot that fits against the outer wall of the end of the card block. The protective cover covers the end of the cooling fan body, and the outer wall of the protective cover has an array of ventilation holes, and the cross-section of the ventilation holes has a honeycomb design.

[0012] Furthermore, the guide rod is cylindrical in shape, with beveled corners at the ends. It is made of magnetic material, and the outer wall of the outer shell has adsorption grooves at equal angles, with the inner wall of the adsorption grooves fitting against the outer wall of the guide rod.

[0013] Furthermore, the card blocks are symmetrically arranged on both sides of the mounting frame, and the outer wall of the end of the card block is designed with a slope. The unlocking block is arranged perpendicular to the card block, and the end of the unlocking block is located outside the mounting frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This silent, noise-reducing, temperature-controlled speed-regulating cooling fan features a noise reduction mechanism. The sound-absorbing holes on the inner wall of the fixed frame reflect, refract, and absorb the sound waves generated by the fan, reducing noise intensity. The airflow guides are distributed at equal angles in an arc shape, guiding airflow smoothly and reducing noise generated by airflow colliding with the fixed frame. The sound insulation layer is made of sound-absorbing cotton, which effectively absorbs residual noise. At the same time, the honeycomb ventilation holes on the outer wall of the protective cover further reduce wind resistance. The combined effect of these multiple structures achieves efficient noise reduction, creating a quiet operating environment for users.

[0015] 2. By setting up a shock-absorbing layer and a limiting block, the shock-absorbing layer is made of rubber, which is soft and elastic, and can effectively buffer the vibration generated during the operation of the fan, preventing the vibration from being transmitted to the outer casing and causing additional noise. The limiting block cooperates with the limiting groove on the inner wall of the outer casing to limit and fix the fixed frame while absorbing vibration, which enhances the stability of the overall structure of the fan and further reduces noise and equipment wear caused by vibration.

[0016] 3. The installation frame features a fixed mechanism for easy assembly and disassembly. The mounting frame uses a guide rod and magnetic attraction between the suction groove and the locking block and slot to quickly install the cooling fan onto the outer casing. When disassembly is required, simply push the unlocking block to compress the reset spring, causing the locking block to disengage from the slot, and the fan can be easily removed. The operation is simple and facilitates subsequent cleaning, maintenance, and replacement of the fan, improving the convenience of equipment use and maintenance efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 This is a schematic cross-sectional view of the outer shell, mounting frame, and protective cover of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the cooling fan body, fixing frame, sound insulation layer, shock absorption layer and limiting block of this utility model; Figure 6 This is a schematic diagram of the outer shell, mounting groove, limiting groove, and guide groove of this utility model; Figure 7 This is a schematic diagram of the protective cover, mounting frame, guide rod, and slot structure of this utility model.

[0018] In the diagram: 1. Cooling fan body; 2. Outer shell; 201. Limiting groove; 202. Mounting groove; 203. Slot; 204. Adsorption groove; 3. Fixing frame; 301. Noise reduction hole; 302. Airflow guide groove; 4. Sound insulation layer; 5. Shock absorption layer; 501. Limiting block; 6. Protective cover; 601. Ventilation hole; 7. Mounting frame; 701. Guide rod; 8. Slot; 801. Unlocking block; 802. Return spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: Please refer to Figure 1 , Figure 2 and Figure 5 This utility model provides the following technical solution: a silent, noise-reducing, temperature-controlled speed-regulating cooling fan, comprising a cooling fan body 1, an outer shell 2 on the outer wall of the cooling fan body 1, and a noise reduction mechanism on the outer wall of the cooling fan body 1 for reducing noise. The noise reduction mechanism includes a fixing frame 3 fixedly installed on the outer wall of the cooling fan body 1, and the inner wall of the fixing frame 3 has a sound-absorbing hole 301 and a guide groove 302. A sound insulation layer 4 is fixedly installed inside the fixing frame 3, and a shock-absorbing layer 5 is fixedly installed on the outer wall of the fixing frame 3. A limit block 501 is fixedly installed on the outer wall of the shock-absorbing layer 5. The fixing frame 3 has a circular cross-section, and the length of the fixing frame 3 is greater than the length of the cooling fan body 1. The guide groove 302 has an arc-shaped design. Furthermore, the flow guide 302 is set at equal angles on the inner wall of the fixed frame 3, and the opening length of the flow guide 302 is the same as the length of the fixed frame 3. The sound-absorbing hole 301 penetrates the inner wall of the fixed frame 3, and the sound-absorbing hole 301 is arranged in an array on the inner wall of the fixed frame 3. The sound insulation layer 4 is made of sound-absorbing cotton, and the cross-section of the sound insulation layer 4 is designed in a circular shape. The outer wall of the shock-absorbing layer 5 is slidably connected to the outer shell 2, and the outer wall of the shock-absorbing layer 5 is attached to the inner wall of the outer shell 2. The shock-absorbing layer 5 is made of rubber. The limiting block 501 is distributed at equal angles on the outer wall of the shock-absorbing layer 5, and the cross-section of the limiting block 501 is designed in a T shape. The inner wall of the outer shell 2 is opened at equal angles with the limiting groove 201, and the inner wall of the limiting groove 201 is attached to the outer wall of the limiting block 501.

[0021] When the cooling fan body 1 is running, the airflow generated by the fan blades rotates enters through the ventilation holes 601 and along the inner wall of the fixed frame 3. At this time, the guide grooves 302 distributed at equal angles in an arc shape on the inner wall of the fixed frame 3 play a role in sorting and guiding the turbulent airflow, allowing the airflow to pass smoothly through the fixed frame 3 and reducing the noise generated by the airflow hitting the inner wall of the fixed frame 3. At the same time, the sound waves generated by the operation of the cooling fan body 1 propagate to the sound-absorbing holes 301 on the inner wall of the fixed frame 3. The sound-absorbing holes 301 weaken the noise intensity by reflecting, refracting and absorbing the sound waves. The sound-absorbing cotton insulation layer 4 inside the fixed frame 3 further reduces the remaining noise. The sound energy is absorbed and converted into heat energy and consumed. The vibration generated by the fan blade rotation is first transmitted to the fixed frame 3. The rubber shock-absorbing layer 5 fixed on the outer wall of the fixed frame 3 can effectively buffer and absorb the vibration energy, greatly reducing the transmission of vibration to the outer shell 2 and avoiding additional noise caused by resonance of the outer shell 2 due to vibration transmission. In addition, the ventilation holes 601 with honeycomb design on the outer wall of the protective cover 6 reduce wind resistance and reduce wind noise while ensuring ventilation and heat dissipation. Through the coordinated work of the guide groove 302, the sound-absorbing hole 301, the sound insulation layer 4 and the ventilation hole 601, the operating noise of the cooling fan body 1 is effectively suppressed.

[0022] Example 2: Please refer to Figure 1 and Figures 3-7 Based on Embodiment 1, a fixing mechanism is also disclosed, the specific structure of which is as follows: The end of the outer shell 2 is provided with a fixing mechanism for convenient assembly and disassembly of the cooling fan body 1. The fixing mechanism includes a mounting frame 7 slidably mounted on the outer wall of the outer shell 2, and a protective cover 6 is provided on the outer wall of the mounting frame 7. A ventilation hole 601 is opened on the outer wall of the protective cover 6. Guide rods 701 distributed at equal angles are fixedly mounted on the outer wall of the mounting frame 7. A locking block 8 is slidably mounted on the outer wall of the mounting frame 7, and an unlocking block 801 is fixedly mounted at the end of the locking block 8. A return spring 802 is fixedly mounted on the outer wall of the unlocking block 801. The mounting frame 7 has a circular cross-section, and its outer diameter is larger than the outer diameter of the sound insulation layer 4. An installation groove 202 is opened on the outer wall of the outer shell 2, and the inner wall of the installation groove 202 fits against the outer wall of the mounting frame 7. A slot 203 is provided that fits against the outer wall of the end of the card block 8. The protective cover 6 covers the end of the cooling fan body 1, and the outer wall of the protective cover 6 has an array of ventilation holes 601, and the cross-section of the ventilation holes 601 has a honeycomb design. The guide rod 701 has a cylindrical design, and the corners of the end of the guide rod 701 are beveled. The guide rod 701 is made of magnetic material. The outer wall of the outer shell 2 has an adsorption groove 204 at equal angles, and the inner wall of the adsorption groove 204 fits against the outer wall of the guide rod 701. The card blocks 8 are symmetrically arranged on both sides of the mounting frame 7, and the outer wall of the end of the card block 8 has a beveled design. The unlocking block 801 is perpendicular to the card block 8, and the end of the unlocking block 801 is located outside the mounting frame 7. A slot 203 is provided on the inner wall of the mounting groove 202, and the inner wall of the slot 203 fits against the outer wall of the end of the card block 8.

[0023] When fixing the cooling fan body 1, align the guide rod 701 on the mounting frame 7 with the adsorption groove 204 on the outer wall of the outer shell 2. Since the guide rod 701 is made of magnetic material, it will automatically adsorb into the adsorption groove 204, playing a preliminary positioning role. Next, push the mounting frame 7 so that the outer wall of the mounting frame 7 fits against the mounting groove 202 on the outer shell 2. During this process, the beveled ends of the symmetrically arranged locking blocks 8 on both sides of the mounting frame 7 contact the inner wall of the mounting groove 202 of the outer shell 2. As the mounting frame 7 is pushed forward, the locking blocks 8 are squeezed and slide outward, compressing the return spring 8. 02. After the mounting frame 7 is fully pushed into the mounting slot 202, the locking block 8 is locked into the slot 203 on the inner wall of the mounting slot 202 under the elastic force of the return spring 802, thus completing the fixed connection between the cooling fan body 1 and the outer shell 2. When disassembling, simply push the unlocking block 801 to drive the locking block 8 to slide outward and compress the return spring 802, so that the locking block 8 is released from the slot 203. The mounting frame 7 along with the cooling fan body 1 can then be easily removed from the outer shell 2. This makes it convenient and quick to disassemble and assemble the cooling fan body 1, facilitating subsequent cleaning, maintenance and replacement.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A silent, noise-reducing, temperature-controlled speed-regulating cooling fan, comprising a cooling fan body (1), wherein the outer wall of the cooling fan body (1) is provided with a shell (2), characterized in that: The outer wall of the cooling fan body (1) is provided with a noise reduction mechanism for reducing noise. The noise reduction mechanism includes a fixed frame (3) fixedly installed on the outer wall of the cooling fan body (1), and the inner wall of the fixed frame (3) is provided with a sound-absorbing hole (301) and a flow guide groove (302). A sound insulation layer (4) is fixedly installed inside the fixed frame (3). A shock-absorbing layer (5) is fixedly installed on the outer wall of the fixed frame (3), and a limit block (501) is fixedly installed on the outer wall of the shock-absorbing layer (5). The end of the outer shell (2) is provided with a fixing mechanism for convenient disassembly and assembly of the cooling fan body (1).

2. The silent, noise-reducing, temperature-controlled speed-regulating cooling fan according to claim 1, characterized in that: The fixed frame (3) has a circular cross-section and the length of the fixed frame (3) is greater than the length of the cooling fan body (1). The guide groove (302) has an arc design and the guide groove (302) is set at equal angles on the inner wall of the fixed frame (3). The opening length of the guide groove (302) is the same as the length of the fixed frame (3).

3. The silent, noise-reducing, temperature-controlled speed-regulating cooling fan according to claim 1, characterized in that: The sound-absorbing hole (301) penetrates the inner wall of the fixed frame (3), and the sound-absorbing hole (301) is arranged in an array on the inner wall of the fixed frame (3). The sound insulation layer (4) is made of sound-absorbing cotton, and the cross-section of the sound insulation layer (4) is a circular design.

4. The silent, noise-reducing, temperature-controlled speed-regulating cooling fan according to claim 1, characterized in that: The outer wall of the shock-absorbing layer (5) is slidably connected to the outer shell (2), and the outer wall of the shock-absorbing layer (5) is in contact with the inner wall of the outer shell (2). The shock-absorbing layer (5) is made of rubber. The limiting blocks (501) are distributed at equal angles on the outer wall of the shock-absorbing layer (5), and the cross section of the limiting blocks (501) is T-shaped. The inner wall of the outer shell (2) is provided with limiting grooves (201) at equal angles, and the inner wall of the limiting grooves (201) is in contact with the outer wall of the limiting blocks (501).

5. A silent, noise-reducing, temperature-controlled speed-regulating cooling fan according to claim 1, characterized in that: The fixing mechanism includes a mounting frame (7) that is slidably mounted on the outer wall of the housing (2), and the outer wall of the mounting frame (7) is provided with a protective cover (6), and the outer wall of the protective cover (6) is provided with a ventilation hole (601). The outer wall of the mounting frame (7) is fixedly mounted with guide rods (701) that are distributed at equal angles. The outer wall of the mounting frame (7) is slidably mounted with a locking block (8), and the end of the locking block (8) is fixedly mounted with an unlocking block (801), and the outer wall of the unlocking block (801) is fixedly mounted with a return spring (802).

6. A silent, noise-reducing, temperature-controlled speed-regulating cooling fan according to claim 5, characterized in that: The mounting frame (7) has a circular cross-section and the outer diameter of the mounting frame (7) is larger than the outer diameter of the sound insulation layer (4). The outer wall of the outer shell (2) is provided with a mounting groove (202) and the inner wall of the mounting groove (202) is in contact with the outer wall of the mounting frame (7). The inner wall of the mounting groove (202) is provided with a slot (203) that is in contact with the outer wall of the end of the card block (8). The protective cover (6) covers the end of the cooling fan body (1) and the outer wall of the protective cover (6) is provided with ventilation holes (601) arranged in an array. The cross-section of the ventilation holes (601) is designed in a honeycomb shape.

7. A silent, noise-reducing, temperature-controlled speed-regulating cooling fan according to claim 5, characterized in that: The guide rod (701) is cylindrical in shape, and the corners of the end of the guide rod (701) are angled. The guide rod (701) is made of magnetic material. The outer wall of the outer shell (2) is provided with adsorption grooves (204) at equal angles, and the inner wall of the adsorption grooves (204) is in contact with the outer wall of the guide rod (701).

8. A silent, noise-reducing, temperature-controlled speed-regulating cooling fan according to claim 5, characterized in that: The card block (8) is symmetrically arranged on both sides of the mounting frame (7), and the outer wall of the end of the card block (8) is designed with a slope. The unlocking block (801) is arranged perpendicular to the card block (8), and the end of the unlocking block (801) is located outside the mounting frame (7).

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