CN217107595U - Noise reduction foam for limiting sound wave transmission and fan assembly - Google Patents
Noise reduction foam for limiting sound wave transmission and fan assembly Download PDFInfo
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- CN217107595U CN217107595U CN202221041676.1U CN202221041676U CN217107595U CN 217107595 U CN217107595 U CN 217107595U CN 202221041676 U CN202221041676 U CN 202221041676U CN 217107595 U CN217107595 U CN 217107595U
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- fan
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- shielding part
- vent hole
- noise reduction
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
- 239000006260 foam Substances 0.000 title claims abstract description 22
- 230000009467 reduction Effects 0.000 title claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003313 weakening effect Effects 0.000 abstract description 5
- 229920000742 Cotton Polymers 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model relates to a noise reduction foam and fan assembly for limiting sound wave transmission, which belongs to the technical field of noise reduction of servers and comprises a supporting part and a shielding part; a first vent hole penetrating through the supporting part is formed in the axis of the supporting part; a second vent hole penetrating through the shielding part is formed on the axis of the shielding part; the shielding part is arranged in the first ventilation hole, and the shielding part is arranged close to one end of the first ventilation hole; the shielding part and the other end of the first ventilation hole are provided with a shielding gap. The first vent hole and the second vent hole are used as structures allowing sound waves to pass through; the shielding part is used as a part for blocking and changing the sound wave path in the transmission process so as to form a weakening effect on the sound wave; the shielding gap provides a buffer distance for the diffusion of sound waves, and meanwhile, the shielding part is prevented from being close to a sound source to cause vibration; the supporting part supports the shielding part and is matched with the shielding part to absorb sound waves to achieve the noise reduction effect.
Description
Technical Field
The utility model belongs to the technical field of the server is fallen the noise, specifically speaking is a cotton and fan assembly of bubble of making an uproar falls in restriction sound wave transmission.
Background
Nowadays, the power consumption of a processor (CPU) of a server is increasing, the system density is increasing, and in order to effectively solve the heat dissipation problem, the performance of an air-cooled fan has a more and more significant trend, and the performance of the air-cooled fan is one of the issues of the heat dissipation research at present. However, the noise caused by the fan increases proportionally. The mode of noise reduction that adopts at present, it is not unusual to paste some bubble cotton of making an uproar that fall in the server, utilizes the characteristic of bubble cotton itself, goes to absorb the refraction of sound, reduces the transmission of sound. The fan is usually surrounded by foam, and the foam which can absorb or change the sound transmission direction and path is added, so as to reduce the noise value. However, the transmission mode of sound in the air is radial and multi-angle projection, the effect cannot be exerted if only the source is wrapped, and the transmission change capability of sound waves is limited.
SUMMERY OF THE UTILITY MODEL
For solving the problem that prior art can't change the radiation area and the direction of broadcasting in-process sound, the utility model provides a cotton and fan assembly of making an uproar falls in restriction sound wave transmission.
The utility model discloses a realize through following technical scheme:
a noise reduction foam for limiting sound wave transmission comprises a supporting part and a shielding part; a first vent hole penetrating through the supporting part is formed in the axis of the supporting part; a second vent hole penetrating through the shielding part is formed on the axis of the shielding part; the shielding part is arranged in the first vent hole, and the shielding part is arranged close to one end of the first vent hole; the shielding part and the other end of the first ventilation hole are provided with a shielding gap.
The first vent hole and the second vent hole are used as structures allowing sound waves to pass through; the shielding part is used as a part for blocking and changing the sound wave path in the transmission process so as to form a weakening effect on the sound wave; the shielding gap provides a buffer distance for the diffusion of sound waves, and meanwhile, the shielding part is prevented from being close to a sound source to cause vibration; the supporting part supports the shielding part and is matched with the shielding part to absorb sound waves to achieve the noise reduction effect.
The utility model discloses a further improvement still, the cross-section in above-mentioned second venthole is circular. According to the fact that the sound waves are radial in the transmission process, the circular second ventilation holes are matched with the transmission of the sound waves, and a covering surface which changes and is matched with the sound wave transmission path can be formed.
The utility model is further improved in that the shielding gap is 5-8 cm. The position of the changed sound wave propagation path keeps a certain distance from the sound source, and the formation of vibration is reduced.
The utility model is further improved in that the thickness of the shielding part is 5-8 cm. The shielding part can reduce the load on the supporting part and improve the absorption of the sound wave at the same time of forming interference change on the sound wave propagation path.
A fan assembly comprises a fan body and noise reduction foam, wherein the fan body comprises a fan frame and fan blades, a fan air channel is formed in the axis of the fan frame, and the fan blades are arranged in the fan air channel; the supporting part is arranged on one side surface of the fan frame, and the first vent hole and the fan air channel are coaxially arranged; the shielding part occupies one tenth of the cross-sectional area of the fan air duct in a radial plane. One tenth of the coverage surface ensures that the vibration intensity is prevented from being increased due to the reflection of the sound waves while the interference is formed on the sound waves in the transmission process.
The utility model discloses a further improvement still, the cross sectional shape in above-mentioned fan wind channel is the same with the cross sectional shape in first ventilation hole, and the cross sectional area in fan wind channel is not more than the cross sectional area in first ventilation hole. The sound wave is prevented from being interfered by the supporting part after passing through the fan air duct, and the purpose is to prevent the supporting part from being overlapped with the fan air duct in the direction of the axial lead, so that the sound wave is prevented from being interfered too early to promote vibration.
The utility model discloses a further improvement still, the cross sectional shape in above-mentioned fan wind channel is circular. The sound wave is formed regularly and the interference of the sound wave path is changed by matching with the shielding part.
The utility model discloses a further improvement still, above-mentioned supporting part is close to the side that shelters from the clearance and bonds on fan frame. The convenient degree of installation of the bubble cotton at the fan body of making an uproar falls in the improvement.
According to the technical scheme provided by the utility model, the beneficial effects are that: the first vent hole and the second vent hole are used as structures allowing sound waves to pass through; the shielding part is used as a part for blocking and changing the sound wave path in the transmission process so as to form a weakening effect on the sound wave; the shielding gap provides a buffer distance for the diffusion of sound waves, and meanwhile, the shielding part is prevented from being close to a sound source to cause vibration; the supporting part supports the shielding part and is matched with the shielding part to absorb sound waves to achieve the noise reduction effect.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view illustrating a sound wave propagation path of a fan body in the prior art.
Fig. 2 is a schematic view of the sound wave propagation path of the fan body after the noise reduction foam is used according to the embodiment of the present invention.
Fig. 3 is a schematic view of the combination state of the noise reduction foam and the fan body according to the embodiment of the present invention.
Fig. 4 is a schematic view of the split state of the noise reduction foam and the fan body according to the embodiment of the present invention.
Fig. 5 is the utility model discloses a foam structure schematic diagram of making an uproar falls in embodiment.
Fig. 6 is the utility model discloses a detailed embodiment falls the cotton split structure sketch of bubble of making an uproar.
In the drawings: 100. the fan comprises a fan body, 110, a fan frame, 120, a fan duct, 200, a supporting portion, 210, a first vent hole, 300, a shielding portion, 310, a second vent hole, 320 and a shielding gap.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.
As shown in fig. 2-5, a fan assembly includes a fan body 100 and noise reduction foam, wherein the fan body 100 includes a fan frame 110 and fan blades, a fan air duct 120 is disposed on an axial line of the fan frame 110, and the fan blades are disposed in the fan air duct 120;
the noise reduction foam is disposed on a side of the fan body 100 away from the heat generating component.
The noise reduction foam comprises a supporting part 200 and a shielding part 300; one side of the supporting portion 200 close to the shielding gap 320 is adhered to the fan frame 110. The installation convenience degree of the noise reduction foam in the fan body 100 is improved.
A first vent hole 210 penetrating through the supporting part 200 is formed on the axis of the supporting part 200; and the first ventilation hole 210 and the fan duct 120 are coaxially disposed.
The cross-sectional shape of the fan duct 120 is the same as that of the first vent 210, and the cross-sectional area of the fan duct 120 is not greater than that of the first vent 210. The sound waves are prevented from being interfered by the supporting portion 200 after passing through the fan duct 120, and the purpose of the sound waves is to prevent the supporting portion 200 from being overlapped with the fan duct 120 in the direction of the axis, so that the sound waves are prevented from being interfered too early to promote vibration.
The shielding part 300 is arranged in the first vent hole 210, and one end of the shielding part 300 close to the first vent hole 210 is arranged; the shielding portion 300 leaves a shielding gap 320 with the other end of the first vent hole 210.
The shielding gap 320 is 5-8 cm. The position of the changed sound wave propagation path keeps a certain distance from the sound source, and the formation of vibration is reduced.
The thickness of the shielding part 300 is 5-8 cm. The shield portion 300 can reduce the load on the support portion 200 by a certain thickness while changing the propagation path of the sound wave in a disturbing manner, and can improve the absorption of the sound wave.
A second vent hole 310 penetrating the shielding portion 300 is formed on the axial line of the shielding portion 300. The first and second vent holes 210 and 310 serve as a structure allowing sound waves to pass therethrough; the shielding portion 300 serves as a portion blocking the change of the path of the acoustic wave during the propagation to form a weakening effect on the acoustic wave; the shielding gap 320 provides a buffering distance for the diffusion of the sound wave while preventing the shielding portion 300 from being close to the sound source to cause vibration; the support portion 200 supports the shielding portion 300, and absorbs sound waves to reduce noise in cooperation with the shielding portion 300.
The cross-sectional shape of the fan duct 120 is circular. The second vent hole 310 has a circular cross-section. According to the fact that the sound waves are radial in the transmission process, the circular second ventilation holes 310 are matched with the transmission of the sound waves, and a covering surface which changes and adapts the sound wave propagation path can be formed. Facilitating regular formation of the sound wave and changing the interference of the sound wave path in cooperation with the shielding portion 300.
The shielding portion 300 occupies one tenth of the cross-sectional area of the fan duct 120 in the radial plane. One tenth of the coverage surface ensures that the vibration intensity is prevented from being increased due to the reflection of the sound waves while the interference is formed on the sound waves in the transmission process.
An included angle formed between one side surface of the blocking portion 300 close to the fan body 100 and the first vent hole 210 is a right angle. So as to ensure that the vertical side surface of the shielding part 300 close to the fan body 100 can form an effective shielding surface, and the effect of absorbing sound waves by the noise reduction foam can be exerted to the maximum.
In the noise reduction foam and fan assembly for limiting sound wave transmission of the present invention, the first vent hole 210 and the second vent hole 310 are used as structures for allowing sound waves to pass through; the shielding portion 300 serves as a portion blocking the change of the path of the acoustic wave during the propagation to form a weakening effect on the acoustic wave; the shielding gap 320 provides a buffering distance for the diffusion of the sound wave while preventing the shielding portion 300 from being close to the sound source to cause vibration; the support portion 200 supports the shielding portion 300, and absorbs sound waves to reduce noise in cooperation with the shielding portion 300.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative relationships in positions, if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended 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.
Claims (8)
1. The noise reduction foam for limiting the transmission of sound waves is characterized by comprising a supporting part (200) and a shielding part (300); a first vent hole (210) penetrating through the supporting part (200) is formed on the axis of the supporting part (200); a second vent hole (310) penetrating through the shielding part (300) is formed on the axis of the shielding part (300); the shielding part (300) is arranged in the first vent hole (210), and one end, close to the first vent hole (210), of the shielding part (300) is arranged; a shielding gap (320) is reserved between the shielding part (300) and the other end of the first vent hole (210).
2. The noise reducing foam for limiting sound wave transmission of claim 1, wherein the cross section of the second vent hole (310) is circular.
3. The noise reducing foam for limiting the transmission of sound waves according to claim 1, wherein the shielding gap (320) is 5-8 cm.
4. The noise reduction foam for limiting the transmission of sound waves according to claim 1, wherein the thickness of the shielding part (300) is 5-8 cm.
5. A fan assembly, characterized by comprising a fan body (100) and the noise reduction foam of any one of claims 1 to 4, wherein the fan body (100) comprises a fan frame (110) and fan blades, a fan air duct (120) is opened on an axial line of the fan frame (110), and the fan blades are arranged in the fan air duct (120); the supporting part (200) is arranged on one side surface of the fan frame (110), and the first ventilation hole (210) and the fan air channel (120) are coaxially arranged; the shielding portion (300) occupies one tenth of the cross-sectional area of the fan duct (120) in a radial plane.
6. The fan assembly as claimed in claim 5, wherein the cross-sectional shape of the fan duct (120) is the same as the cross-sectional shape of the first vent (210), and the cross-sectional area of the fan duct (120) is not greater than the cross-sectional area of the first vent (210).
7. The fan assembly of claim 6, wherein the fan stack (120) is circular in cross-sectional shape.
8. A fan assembly according to claim 5, characterized in that the support (200) is bonded to the fan frame (110) on the side thereof adjacent to the shielding gap (320).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221041676.1U CN217107595U (en) | 2022-04-30 | 2022-04-30 | Noise reduction foam for limiting sound wave transmission and fan assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221041676.1U CN217107595U (en) | 2022-04-30 | 2022-04-30 | Noise reduction foam for limiting sound wave transmission and fan assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217107595U true CN217107595U (en) | 2022-08-02 |
Family
ID=82586966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221041676.1U Active CN217107595U (en) | 2022-04-30 | 2022-04-30 | Noise reduction foam for limiting sound wave transmission and fan assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217107595U (en) |
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2022
- 2022-04-30 CN CN202221041676.1U patent/CN217107595U/en active Active
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