Noise reduction device for cooling fan of computer

Abstract

The utility model discloses a computer cooling fan noise reduction device which comprises a case and a cooling fan body, the outer wall of the front side of the case is provided with a through groove, the periphery of the through groove is provided with an annular installation groove matched with the cooling fan body in a clamping mode, and the inner wall of the annular installation groove is provided with a rubber shock pad tightly attached to the cooling fan body. An exhaust pipe located on the periphery of the cooling fan body is fixedly arranged on the outer wall of the case, a noise reduction cavity is formed in the exhaust pipe, noise absorption cotton is pasted to the inner wall of the noise reduction cavity, a plurality of circular protrusions located on the noise absorption cotton are evenly arranged in the noise reduction cavity, and a dust screen plate is arranged at the end, away from the cooling fan body, of the exhaust pipe. Compared with the prior art, the computer cooling fan has the advantages that the rubber shock pad tightly attached to the cooling fan body is arranged in the annular mounting groove, then the noise reduction cavity is formed in the air outlet of the cooling fan body, noise reduction treatment is achieved through the sound absorption cotton in the noise reduction cavity under the cooperation of the circular protrusions, and noise of the computer cooling fan is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of computer cooling fans, in particular to a noise reduction device for a computer cooling fan. Background Art

[0002] Computer fans are also called cooling fans, which are generally used for heat dissipation. They are provided for use with radiators and chassis. The chassis fan is installed on the computer chassis to dissipate heat for the entire internal space of the computer chassis;

[0003] The existing chassis cooling fan is directly fixed on the chassis wall to cooperate with the heat dissipation of electrical components in the chassis. However, the cooling fan will generate noise during operation. The noise is more obvious when multiple chassis are used at the same time, thereby generating noise pollution and affecting the hearing of operators. Therefore, a computer cooling fan noise reduction device is needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is that a cooling fan generates noise pollution when in use, and a noise reduction device for a computer cooling fan is provided.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a computer cooling fan noise reduction device, including a chassis and a cooling fan body, the chassis front outer wall is provided with a through groove, the through groove is surrounded by annular mounting grooves that cooperate with the cooling fan body, the cooling fan body is installed in the annular mounting groove through the through groove, the inner wall of the annular mounting groove is provided with a rubber shock-absorbing pad that is close to the cooling fan body, the chassis outer wall is fixedly provided with an exhaust duct located around the cooling fan body, the exhaust duct is provided with a silencer cavity, the inner wall of the silencer cavity is pasted with sound-absorbing cotton, the silencer cavity is evenly provided with a plurality of circular protrusions on the sound-absorbing cotton, and the exhaust duct is provided with a dust-proof mesh plate at one end away from the cooling fan body.

[0006] As an improvement, the outer wall of the exhaust duct is provided with a limiting groove that cooperates with the dust-proof screen plate. The setting of the limiting groove facilitates the installation and removal of the dust-proof screen plate, thereby facilitating cleaning and improving air outlet efficiency.

[0007] As an improvement, a dust removal chamber close to the cooling fan body is provided in the exhaust duct, and a small vacuum cleaner is fixedly provided on the outer wall at the bottom end of the exhaust duct. The small vacuum cleaner is connected with a dust suction hose connected to the bottom end of the dust removal chamber. The dust in the dust removal chamber during the heat dissipation process can be sucked out to reduce the dust adhering to the outer wall of the cooling fan body, thereby ensuring the heat dissipation efficiency and reducing noise.

[0008] As an improvement, a stretching rod is slidably provided through the top wall of the exhaust duct and extends into the dust removal chamber. The bottom end of the stretching rod is connected to a cleaning plate close to the outer wall of the cooling fan body. Cleaning brushes are evenly arranged on the cleaning plate and close to the outer wall of the cooling fan body. The inner wall of the exhaust duct is provided with a sliding groove that cooperates with the cleaning plate for sliding connection, so that the dust on the outer wall of the cooling fan body can be fully cleaned.

[0009] As an improvement, an armrest is connected to the top of the stretching rod, a sliding rod close to the chassis is passed through the armrest, a fixing groove matching the sliding rod is provided on the outer wall of the chassis, a reset plate is connected to the other end of the sliding rod, and a group of reset springs located on both sides of the sliding rod are connected between the reset plate and the armrest, which can limit and fix the position of the cleaning plate when not in use to prevent it from shaking at will.

[0010] The advantage of the utility model over the prior art is that a rubber shock-absorbing pad close to the cooling fan body is provided in the annular mounting groove of the cooling fan body, and then a silencer cavity is arranged at the air outlet position of the cooling fan body, and the sound-absorbing cotton in the silencer cavity achieves noise reduction processing with the cooperation of the circular protrusion, thereby effectively reducing the noise of the computer cooling fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a first stereoscopic diagram of a computer cooling fan noise reduction device of the utility model.

[0012] Figure 2 It is a second stereoscopic diagram of a computer cooling fan noise reduction device of the utility model.

[0013] Figure 3 It is a first sectional stereoscopic diagram of a computer cooling fan noise reduction device of the utility model.

[0014] Figure 4 The utility model is a partial structural sectional stereogram of a computer cooling fan noise reduction device.

[0015] Figure 5 It is a schematic diagram of the structure of part A in the figure.

[0016] As shown in the figure: 1. Chassis; 2. Cooling fan body; 3. Annular mounting groove; 4. Rubber shock-absorbing pad; 5. Exhaust duct; 6. Silence chamber; 7. Sound-absorbing cotton; 8. Circular protrusion; 9. Dust-proof mesh plate; 10. Limiting groove; 11. Dust removal chamber; 12. Small vacuum cleaner; 13. Dust suction hose; 14. Stretching rod; 15. Cleaning plate; 16. Cleaning brush; 17. Slide groove; 18. Armrest; 19. Slide rod; 20. Fixed groove; 21. Reset plate; 22. Reset spring; 23. Through groove. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] Embodiment 1

[0019] Combined with Figure 1-3 As shown, a computer cooling fan noise reduction device comprises a case 1 and a cooling fan body 2, wherein the front outer wall of the case 1 is provided with a through groove 23, and the through groove 23 is provided with an annular mounting groove 3 around the cooling fan body 2, and the cooling fan body 2 is installed in the annular mounting groove 3 through the through groove 23, and the inner wall of the annular mounting groove 3 is provided with a rubber shock-absorbing pad 4 close to the cooling fan body 2, and the outer wall of the case 1 is fixed with an exhaust pipe 5 around the cooling fan body 2, and a silencer cavity 6 is provided in the exhaust pipe 5, and a sound-absorbing cotton 7 is pasted on the inner wall of the sound-absorbing cavity 6, and a plurality of circular protrusions 8 on the sound-absorbing cotton 7 are evenly provided in the sound-absorbing cavity 6, and a dust-proof mesh plate 9 is provided at one end of the exhaust pipe 5 away from the cooling fan body 2, and a limiting groove 10 matching the dust-proof mesh plate 9 is provided on the outer wall of the exhaust pipe 5;

[0020] Through the above structure, the cooling fan body 2 is first placed in the chassis 1 through the through groove 23, and then the installation frame of the cooling fan body 2 is placed in the annular installation groove 3, and the rubber shock-absorbing pad 4 is close to the outer wall of the cooling fan body 2. After the cooling fan body 2 is fixedly installed, the exhaust pipe 5 is installed. When the cooling fan body 2 is working to dissipate heat in the chassis 1, the extracted hot air is released through the exhaust pipe 5. At the same time, the noise is absorbed by the sound-absorbing cotton 7 in the silencer cavity 6. The circular protrusion 8 blocks the noise and increases the contact area between the sound-absorbing cotton 7 and the noise, so that most of the noise can be eliminated. At the same time, when the cooling fan body 2 is working, the rubber shock-absorbing pad 4 alleviates the shaking caused by its work, thereby reducing the vibration and noise generated when the fan is running;

[0021] Embodiment 2

[0022] Based on the first embodiment, combined with the attached Figure 4 and 5As shown, a dust removal chamber 11 close to the cooling fan body 2 is provided in the exhaust duct 5, a small vacuum cleaner 12 is fixedly provided on the outer wall at the bottom end of the exhaust duct 5, and the small vacuum cleaner 12 is connected with a dust suction hose 13 connected with the bottom end of the dust removal chamber 11; a stretching rod 14 is slidably provided through the top wall of the exhaust duct 5 and extends into the dust removal chamber 11; a cleaning plate 15 close to the outer wall of the cooling fan body 2 is connected to the bottom end of the stretching rod 14, and a cleaning brush 16 close to the outer wall of the cooling fan body 2 is evenly provided on the cleaning plate 15; a sliding groove 17 cooperating with the cleaning plate 15 and slidingly connected to the inner wall of the exhaust duct 5 is provided, and an armrest 18 is connected to the top end of the stretching rod 14, and a sliding rod 19 close to the chassis 1 is penetrated on the armrest 18, and a fixing groove 20 matching the sliding rod 19 is provided on the outer wall of the chassis 1, and a reset plate 21 is connected to the other end of the sliding rod 19, and a group of reset springs 22 located on both sides of the sliding rod 19 are connected between the reset plate 21 and the armrest 18;

[0023] Through the above structure, the reset plate 21 is pulled regularly so that the slide bar 19 is away from the fixed groove 20 with the cooperation of the reset spring 22, and the limit on the stretching rod 14 is cancelled. The stretching rod 14 can be pulled by the handrail 18 so that the cleaning plate 15 moves up and down with the cooperation of the slide groove 17, and the cleaning brush 16 continuously cleans the outer wall of the cooling fan body 2 to sweep away the dust, and the dust is extracted with the cooperation of the small vacuum cleaner 12 and the vacuum hose 13, so as to realize the dust removal of the cooling fan body 2, remove dust and dirt, maintain the operation efficiency of the fan, and thus reduce noise.

[0024] In the specific implementation of the utility model, the cooling fan body 2 is first placed in the chassis 1 through the through slot 23, and then the installation frame of the cooling fan body 2 is placed in the annular installation slot 3, and the rubber shock-absorbing pad 4 is closely attached to the outer wall of the cooling fan body 2. After the cooling fan body 2 is fixedly installed, the exhaust pipe 5 is installed;

[0025] When the cooling fan body 2 is working to dissipate heat in the chassis 1, the extracted hot air is released through the exhaust pipe 5. At the same time, the noise is absorbed by the sound-absorbing cotton 7 in the silencer chamber 6. The circular protrusion 8 blocks the noise, increases the contact area between the sound-absorbing cotton 7 and the noise, thereby being able to eliminate most of the noise. At the same time, when the cooling fan body 2 is working, the rubber shock-absorbing pad 4 alleviates the shaking caused by its work, thereby reducing the vibration and noise generated when the fan is running; regularly pull the reset plate 21 so that the slide bar 19 is away from the fixed groove 20 with the cooperation of the reset spring 22, cancel the limit on the stretching rod 14, and then pull the stretching rod 14 through the handrail 18 so that the cleaning plate 15 moves up and down with the cooperation of the slide groove 17, and the cleaning brush 16 continuously cleans the outer wall of the cooling fan body 2 to clean the dust, and extracts the dust with the cooperation of the small vacuum cleaner 12 and the dust suction hose 13, so as to realize the dust removal of the cooling fan body 2, remove dust and dirt to maintain the operation efficiency of the fan, thereby reducing noise.

[0026] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A computer cooling fan noise reduction device, comprising a case (1) and a cooling fan body (2), wherein the front outer wall of the case (1) is provided with a through groove (23), and the through groove (23) is surrounded by an annular mounting groove (3) for engaging with the cooling fan body (2), and the cooling fan body (2) is installed in the annular mounting groove (3) through the through groove (23), characterized in that: The inner wall of the annular mounting groove (3) is provided with a rubber shock-absorbing pad (4) which is in close contact with the cooling fan body (2); the outer wall of the chassis (1) is fixedly provided with an exhaust pipe (5) which is located around the cooling fan body (2); a silencer cavity (6) is provided in the exhaust pipe (5); sound-absorbing cotton (7) is pasted on the inner wall of the silencer cavity (6); a plurality of circular protrusions (8) which are located on the sound-absorbing cotton (7) are evenly provided in the silencer cavity (6); and a dust-proof screen (9) is provided at one end of the exhaust pipe (5) which is away from the cooling fan body (2).

2. A computer cooling fan noise reduction device according to claim 1, characterized in that: The outer wall of the exhaust pipe (5) is provided with a limiting groove (10) that matches the dust-proof mesh plate (9).

3. A computer cooling fan noise reduction device according to claim 1, characterized in that: The exhaust duct (5) is provided with a dust removal chamber (11) close to the cooling fan body (2), and a small vacuum cleaner (12) is fixedly provided on the outer wall of the bottom end of the exhaust duct (5), and the small vacuum cleaner (12) is connected with a dust suction hose (13) which is in communication with the bottom end of the dust removal chamber (11).

4. A computer cooling fan noise reduction device according to claim 3, characterized in that: A stretching rod (14) is slidably provided through the top wall of the exhaust duct (5) and extends into the dust removal chamber (11); a cleaning plate (15) close to the outer wall of the cooling fan body (2) is connected to the bottom end of the stretching rod (14); cleaning brushes (16) are evenly provided on the cleaning plate (15) and are in close contact with the outer wall of the cooling fan body (2); and a sliding groove (17) is provided on the inner wall of the exhaust duct (5) and is slidably connected to the cleaning plate (15).

5. A computer cooling fan noise reduction device according to claim 4, characterized in that: The top end of the stretching rod (14) is connected to a handrail (18), a slide bar (19) close to the chassis (1) is passed through the handrail (18), an outer wall of the chassis (1) is provided with a fixing groove (20) matched with the slide bar (19), the other end of the slide bar (19) is connected to a reset plate (21), and a group of reset springs (22) located on both sides of the slide bar (19) are connected between the reset plate (21) and the handrail (18).

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