CN117967614A - Noise reduction device and communication equipment - Google Patents
Noise reduction device and communication equipment Download PDFInfo
- Publication number
- CN117967614A CN117967614A CN202211321215.4A CN202211321215A CN117967614A CN 117967614 A CN117967614 A CN 117967614A CN 202211321215 A CN202211321215 A CN 202211321215A CN 117967614 A CN117967614 A CN 117967614A
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- noise reduction
- noise
- support frame
- main control
- circuit board
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- 238000004891 communication Methods 0.000 title claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 239000011358 absorbing material Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 17
- 230000000712 assembly Effects 0.000 abstract description 10
- 238000000429 assembly Methods 0.000 abstract description 10
- 230000003584 silencer Effects 0.000 description 7
- 230000030279 gene silencing Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The application provides a noise reduction device and communication equipment, the noise reduction device comprises: the support frame is provided with an air inlet and an air outlet; the first noise reduction module is arranged at the air inlet of the supporting frame; the first noise reduction module comprises a main control circuit board and a plurality of first noise reduction assemblies, the plurality of first noise reduction assemblies are distributed at intervals along the height direction of the supporting frame, and the first noise reduction assemblies are electrically connected with the main control circuit board; and the second noise reduction module is arranged at the air outlet of the supporting frame and is used for blocking noise source transmission. The application solves the problem of poor noise reduction effect of the noise reduction device.
Description
Technical Field
The application relates to the technical field of equipment silencing and noise reduction, in particular to a noise reduction device and communication equipment.
Background
With the continuous development of integrated circuit technology, the volume of communication equipment is smaller and smaller, and the system is more complicated, so that the communication equipment is in a high-heat-density state. In order to improve the heat dissipation performance of the high heat density communication device, heat dissipation devices such as fans and the like are required to be added. However, as the number of fans increases, the noise of the communication device increases.
In the related art, passive noise reduction is often used for noise reduction processing of a communication device. Sound absorbing materials such as sound absorbing cotton are used to block the transmission of sound between the noise source and the external environment. However, the traditional sound absorption material has very limited effect of eliminating low-frequency noise, and cannot eliminate all-frequency noise sources, so that the noise reduction effect of the communication equipment is poor.
Disclosure of Invention
The embodiment of the application provides a noise reduction device and communication equipment, which at least solve the technical problem that the noise reduction effect of the noise reduction device in the related art is poor.
In a first aspect, the present application provides a noise reduction device comprising:
the support frame is provided with an air inlet and an air outlet;
The first noise reduction module is arranged at the air inlet of the supporting frame; the first noise reduction module comprises a main control circuit board and a plurality of first noise reduction assemblies, the plurality of first noise reduction assemblies are distributed at intervals along the height direction of the supporting frame, and the first noise reduction assemblies are electrically connected with the main control circuit board; and
The second noise reduction module is arranged at the air outlet of the supporting frame and used for blocking noise source transmission.
In a second aspect, the present application also provides a communication device comprising:
a cabinet having an opening;
The noise reduction device is characterized in that the supporting frame of the noise reduction device is connected to the cabinet, and the noise reduction device is used for covering the opening of the cabinet.
According to the noise reduction device and the communication equipment provided by the application, the noise reduction device comprises: the support frame is provided with an air inlet and an air outlet; the first noise reduction module is arranged at the air inlet of the supporting frame; the first noise reduction module comprises a main control circuit board and a plurality of first noise reduction assemblies, the plurality of first noise reduction assemblies are distributed at intervals along the height direction of the supporting frame, and the first noise reduction assemblies are electrically connected with the main control circuit board; and the second noise reduction module is arranged at the air outlet of the supporting frame and is used for blocking noise source transmission. According to the technical scheme, the composite noise reduction device combining active noise reduction and passive noise reduction is arranged to realize full-band noise reduction of the noise source, so that the noise reduction effect of the noise reduction device is improved. Specifically, the noise reduction device is configured to at least comprise a support frame, a first noise reduction module and a second noise reduction module, wherein an air inlet and an air outlet are arranged on the support frame so as to enable air to flow out; the first noise reduction module is arranged at the air inlet side of the supporting frame to absorb noise sources generated by gas movement and eliminate low-frequency noise sources; the second noise reduction module is arranged on the air outlet side of the supporting frame so as to block the sound transmission between the noise coming out of the first noise reduction module and the external environment and eliminate the medium-high frequency band noise source. Therefore, the first noise reduction module and the second noise reduction module which are complementary are configured on the supporting frame, so that the full-frequency-band elimination of the noise source is realized, and the noise reduction effect is effectively improved. And when the noise reduction device is applied to the communication equipment, as the noise reduction device is an additional structural member of the communication equipment, the long-term operation reliability of the communication equipment is not affected, and the noise reduction device is beneficial to the mute/bass operation of the communication equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a first perspective view of a noise reducer provided by the present application;
FIG. 2 is a second perspective view of the noise reducer provided by the present application;
FIG. 3 is a first perspective view of a first noise reduction assembly according to the present application;
FIG. 4 is a second perspective view of the first noise reduction assembly of the present application;
FIG. 5 is a schematic diagram of a main control circuit board structure provided by the present application;
Fig. 6 is a schematic partial perspective view of a second noise reduction module according to the present application;
Fig. 7 is a top view of fig. 6.
Reference numerals illustrate:
100. A support frame;
200. A first noise reduction module; 210. a main control circuit board; 211. a filter unit; 212. a noise inversion control unit; 213. a signal output unit; 214. an amplifying circuit; 220. a first noise reduction assembly; 221. a connecting piece; 222. a noise collection member; 223. a speaker member; 230. a wiring box;
300. A second noise reduction module; 301. noise reduction flow channels; 310. a sound deadening member; 311. micropores;
z, height direction; y, thickness direction.
Detailed Description
The application will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In a first aspect, referring to fig. 1 and 2, an embodiment of the present application provides a noise reduction device, including:
A support frame 100 having an air inlet and an air outlet;
the first noise reduction module 200 is arranged at the air inlet of the supporting frame 100; the first noise reduction module 200 comprises a main control circuit board 210 and a plurality of first noise reduction components 220, the plurality of first noise reduction components 220 are distributed at intervals along the height direction Z of the support frame 100, and the first noise reduction components 220 are electrically connected with the main control circuit board 210; and
The second noise reduction module 300 is disposed at the air outlet of the support frame 100, and the second noise reduction module 300 is used for blocking noise source transmission.
In this embodiment, by setting a composite noise reduction device combining active noise reduction and passive noise reduction, full-band noise reduction of a noise source is realized, so that the noise reduction effect of the noise reduction device is improved.
Specifically, the noise reduction device is configured to at least comprise a combined member of the support frame 100, the first noise reduction module 200 and the second noise reduction module 300, and an air inlet and an air outlet are arranged on the support frame 100 so as to enable air to flow out; the first noise reduction module 200 is disposed at the air inlet side of the support frame 100 to absorb noise sources generated by gas movement and eliminate low-frequency noise sources; the second noise reduction module 300 is disposed at the air outlet side of the support frame 100 to block the transmission of noise from the first noise reduction module 200 to the external environment, and to eliminate the middle-high band noise source. In this way, by configuring the first noise reduction module 200 and the second noise reduction module 300 which are complementary on the support frame 100, full-band elimination of noise sources is achieved, and noise reduction effect is effectively improved. And when the noise reduction device is applied to the communication equipment, as the noise reduction device is an additional structural member of the communication equipment, the long-term operation reliability of the communication equipment is not affected, and the noise reduction device is beneficial to the mute/bass operation of the communication equipment.
In one example, the support frame 100 is a hollow rectangular frame, the support frame 100 having a thickness. The air inlet and the air outlet are arranged at intervals in the thickness direction Y of the support frame 100, and the first noise reduction module 200 and the second noise reduction module 300 are stacked in the thickness direction Y of the support frame 100. Specifically, the air flow from the air outlet of the cabinet of the communication device enters the first noise reduction module 200 through the air inlet of the support frame 100, actively reduces noise, then passes through the second noise reduction module 300, passively reduces noise, and enters the external environment from the air outlet of the support frame 100. Therefore, the noise generated by the components in the cabinet is processed by arranging at least the dual noise reduction module, and the noise reduction effect is greatly improved.
In an example, the first noise reduction module 200 is configured to at least include a combination member of the main control circuit board 210 and a plurality of first noise reduction components 220, each first noise reduction component 220 is electrically connected to the main control circuit board 210, and the plurality of first noise reduction components 220 are distributed at intervals along the height direction Z of the support frame 100, so that the targeted processing of noise sources at different positions in the height direction Z of the support frame 100 is achieved through independent control of each first noise reduction component 220 by the main control circuit board 210.
Referring to fig. 3 and 4, in one possible embodiment, the first noise reduction assembly 220 includes a connection member 221, a noise collection member 222, and a speaker member 223, wherein the connection member 221 is connected to the support frame 100, the speaker member 223 is connected to the connection member 221, and the noise collection member 222 is disposed on a side of the speaker member 223 facing away from the second noise reduction module 300;
the main control circuit board 210 is electrically connected to the noise collection member 222 and the speaker member 223, respectively.
In this embodiment, the specific structure of the first noise reduction component 220 is set. Specifically, the first noise reduction assembly 220 is configured as a combined member including at least a connection piece 221, a noise collection piece 222, and a speaker piece 223. The connection piece 221 is used for integrating the noise collection piece 222 and the speaker piece 223; the noise collection piece 222 faces the air outlet of the cabinet and is used for collecting noise information at the air outlet of the cabinet; the speaker member 223 is used for outputting an inverted sound signal to cancel the noise source, thereby achieving a noise reduction effect. For example, but not limited to, at least one end of the connection member 221 is connected to the support frame 100, and the speaker member 223 and the noise pickup member 222 are positioned on a line of symmetry of the support frame 100.
In one example, the connection 221 is a connection beam, the noise pickup 222 is a sensor, and the speaker 223 is a speaker. The two ends of the connection beam are respectively connected with the opposite sides of the support frame 100, the speaker is disposed at the middle position of the connection beam, and the sensor is disposed at the middle position of the speaker. For example, but not limited to, the connecting beam has a horizontal width that is preferably sized to mount the speaker, thus improving the connection stability of the speaker member 223 and the connecting member 221 and extending the service life of the first noise reduction assembly 220.
In one example, the noise collection member 222 includes a sound sensor and a position sensor, so that the position information of the speaker member 223 is provided through the position sensor, so that the control of the speaker member 223 at a specific position by the main control circuit board 210 is facilitated; meanwhile, the noise source information of the cabinet is acquired through the sound sensor, so that the control of the main control circuit board 210 on the output inverted sound source quantity of the loudspeaker 223 is facilitated.
Referring to fig. 5, in one possible embodiment, the main control circuit board 210 includes a filter unit 211, a noise inversion control unit 212212, a signal output unit 213, and an amplifying circuit 214, where an input end of the filter unit 211 is electrically connected to the noise collection element 222, an output end of the filter unit 211 is electrically connected to an input end of the noise inversion control unit 212, an output end of the noise inversion control unit 212 is electrically connected to an input end of the signal output unit 213, an output end of the signal output unit 213 is electrically connected to an input end of the amplifying circuit 214, and an input end of the amplifying circuit 214 is electrically connected to the speaker element 223.
In this embodiment, the specific structure of the main control circuit board 210 is set. Specifically, the main control circuit board 210 is configured to include at least a combination member of a filter unit 211, a noise inversion control unit 212212, a signal output unit 213, and an amplifying circuit 214. After the noise acquisition part 222 acquires the noise source information at the position, the noise source information is transmitted to the filter unit 211 in the main control circuit board 210 for signal processing, then the processed noise source information is transmitted to the signal output unit 213 after the phase inversion of the noise source information is performed by the noise inversion control unit 212212, the output inverted sound signal is transmitted to the speaker part 223 after being processed by the amplifying circuit 214, and finally the speaker part 223 outputs sound signals with equal sound intensity and opposite phase so as to perform noise reduction processing on the noise source at the position.
In one possible implementation, the main control circuit board 210 controls the corresponding speaker unit 223 to emit an inverse noise source signal according to the position information and the noise source information of the noise collecting unit 222.
In the present embodiment, the operation mode of the speaker 223 is set. Specifically, the noise collection member 222 supplies the position information and the noise source information to the main control circuit board 210, so that the main control circuit board 210 performs the inverse noise reduction processing with equal sound intensity and opposite sound phase to the speaker member 223 at the specified position. Thus, the noise reduction accuracy and normalization of the noise reduction device are effectively improved.
Referring to fig. 1, in one possible embodiment, the first noise reduction module 200 further includes a plurality of cables (not shown in the drawing) and a routing box 230, where the plurality of cables and the plurality of first noise reduction components 220 are disposed in a one-to-one correspondence, and the plurality of cables are received in the routing box 230;
The first noise reduction component 220 is electrically connected to the main control circuit board 210 through a cable.
In this embodiment, the specific structure of the first noise reduction module 200 is set to improve the aesthetic property and the neatness of the noise reduction device. Specifically, the first noise reduction module 200 is configured to at least include a main control circuit board 210, a plurality of first noise reduction components 220, a plurality of cables, and a combination member of the trace box 230. Each first noise reduction assembly 220 is electrically connected to the main control circuit board 210 through a cable, so that independent control of the first noise reduction assemblies 220 is achieved.
In an example, the main control circuit board 210 is disposed at the top of the support frame 100, the trace box 230 is disposed on a side wall of the support frame 100, and the trace box 230 extends along the height direction Z of the support frame 100, so that one end of the cable is electrically connected to the first noise reduction component 220, and the other end of the cable passes through the trace box 230 to be electrically connected to the main control circuit board 210, so as to achieve storage and arrangement of the cable.
Referring to fig. 1 and 2, and 6 and 7, in one possible embodiment, the second noise reduction module 300 includes a plurality of noise reduction members 310, and the plurality of noise reduction members 310 are spaced apart in the height direction Z of the support frame 100.
In this embodiment, the specific structure of the second noise reduction module 300 is set. Specifically, the plurality of silencing pieces 310 are arranged to be spaced apart in the height direction Z of the support frame 100, so that the passive noise reduction effect of the noise reduction device is improved.
Referring to fig. 6 and 7, in one possible embodiment, two adjacent silencing pieces 310 are enclosed with the inner wall of the support frame 100 to form a noise reduction flow channel 301, and in the height direction Z of the support frame 100, the cross-sectional shape of the noise reduction flow channel 301 is any one of a wave shape, a fold line shape, a sine curve shape, or a parabola shape.
In this embodiment, the specific shape of the silencing members 310 is set to optimize the shape of the noise reduction flow channel 301 formed between two adjacent silencing members 310, so as to prolong the flow path and residence time of sound in the noise reduction flow channel 301 and improve the sound absorption effect and the sound insulation effect of the second noise reduction module 300. Specifically, the cross-sectional shape of the noise reduction flow channel 301 is any one of a wavy shape, a folded line shape, a sinusoidal shape or a parabolic shape, so that the air flow coming out from the first noise reduction module 200 is refracted at least once in the noise reduction flow channel 301, and then enters the external environment, so as to improve the noise reduction effect of the second noise reduction module 300. For example, but not limited to, the cross-sectional shape of the noise reduction flow path 301 is configured as a zigzag shape in order to simplify the structure and reduce the difficulty of production.
That is, the cross-sectional shape of the muffler 310 may be configured to be any one of wavy, folded, sinusoidal, or parabolic. For example, and without limitation, sound attenuating element 310 may be configured as a hook structure formed by at least two flat plates joined at an angle.
Referring to fig. 6, in one possible embodiment, the inside of the silencer 310 is filled with a sound absorbing material (not shown), and the surface of the silencer 310 is distributed with a plurality of micro holes 311.
In this embodiment, the muffler 310 is provided to improve the sound absorbing performance and the noise reducing performance of the muffler 310. Specifically, the inside of the silencer 310 is filled with a sound absorbing material, so that the sound absorbing effect of the silencer 310 is improved; meanwhile, a plurality of micro holes 311 are formed on the surface of the silencer 310, and the silencer 310 is configured as a perforated plate structure formed by the plurality of micro holes 311, so that sound and friction of small hole walls are utilized to convert sound energy into heat energy, and a noise reduction effect is achieved. For example, but not limited to, sound absorbing material is sound absorbing cotton or the like.
In one possible embodiment, the effective diameter of the micro holes 311 is 1mm to 8mm, and the aperture ratio of the substrate is 5% to 25%.
In this embodiment, the effective diameter length and the aperture ratio of the micro holes 311 are set to set the boundary of sound, so as to improve the attenuation characteristic of noise and the noise reduction effect of the silencer 310. Specifically, the effective diameter of the micropores 311 is 1 to 8mm, and the aperture ratio of the substrate is 5 to 25%, so that the noise attenuation accuracy is improved.
In a second aspect, the present application also provides a communication device, including a cabinet having an opening; the noise reduction device as described above, the supporting frame 100 of the noise reduction device is connected to the cabinet, and the noise reduction device is used for covering the opening of the cabinet. The specific structure of the noise reduction device refers to the above embodiments, and because the present communication device adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
In one example, the support frame 100 of the noise reducer is rotatably connected to the cabinet, such that, on the one hand, the noise reducer is used as a door structure of the cabinet to save raw materials of the cabinet; on the other hand, noise generated by the operation of various components in the cabinet is reduced/eliminated through the noise reduction device, so that the noise is prevented from being transmitted to the external environment, the mute/bass operation of the communication equipment is facilitated, and the user experience is improved. In addition, the noise reduction device is an additional structure of the communication equipment and does not directly act on components, so that the noise reduction device does not influence the long-term operation of the communication equipment, and the operation stability of the communication equipment is improved.
It will be appreciated by those skilled in the art that the modules or steps of the application described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A noise reduction device, characterized in that the noise reduction device comprises:
the support frame is provided with an air inlet and an air outlet;
The first noise reduction module is arranged at the air inlet of the supporting frame; the first noise reduction module comprises a main control circuit board and a plurality of first noise reduction components, the plurality of first noise reduction components are distributed at intervals along the height direction of the supporting frame, and the first noise reduction components are electrically connected with the main control circuit board; and
The second noise reduction module is arranged at the air outlet of the supporting frame and used for blocking noise source transmission.
2. The noise reduction device of claim 1, wherein the first noise reduction assembly comprises a connecting piece, a noise collection piece and a speaker piece, the connecting piece is connected to the support frame, the speaker piece is connected to the connecting piece, and the noise collection piece is arranged on one side of the speaker piece away from the second noise reduction module;
The main control circuit board is electrically connected with the noise acquisition part and the loudspeaker part respectively.
3. The noise reduction device according to claim 2, wherein the main control circuit board comprises a filter unit, a noise inversion control unit, a signal output unit and an amplifying circuit, wherein an input end of the filter unit is electrically connected to the noise collection member, an output end of the filter unit is electrically connected to an input end of the noise inversion control unit, an output end of the noise inversion control unit is electrically connected to an input end of the signal output unit, an output end of the signal output unit is electrically connected to an input end of the amplifying circuit, and an input end of the amplifying circuit is electrically connected to the speaker member.
4. The noise reduction device according to claim 2, wherein the main control circuit board controls the speaker unit to emit an inverse noise source signal according to the position information and the noise source information of the noise acquisition unit.
5. The noise reduction device according to claim 1, wherein the first noise reduction module further comprises a plurality of cables and a routing box, the plurality of cables and the plurality of first noise reduction components are arranged in a one-to-one correspondence manner, and the plurality of cables are accommodated in the routing box;
The first noise reduction assembly is electrically connected to the main control circuit board through the cable.
6. The noise reduction device of claim 1, wherein the second noise reduction module comprises a plurality of noise reduction pieces, the noise reduction pieces being spaced apart along a height direction of the support frame.
7. The noise reduction device according to claim 6, wherein adjacent two of the noise reduction members are enclosed with an inner wall of the support frame to form a noise reduction flow passage, and a cross-sectional shape of the noise reduction flow passage in a height direction of the support frame is any one of a wavy shape, a folded line shape, a sinusoidal shape, or a parabolic shape.
8. The noise reduction device according to claim 6, wherein the interior of the noise reduction member is filled with a sound absorbing material, and a plurality of micropores are distributed on the surface of the noise reduction member in a dispersed manner.
9. The noise reduction device according to claim 8, wherein the effective diameter of the micropores is 1mm to 8mm, and the aperture ratio of the substrate is 5% to 25%.
10. A communication device, comprising:
a cabinet having an opening;
The noise reducer of any of claims 1-9, a support frame of the noise reducer being connected to the cabinet, the noise reducer being configured to cover an opening of the cabinet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211321215.4A CN117967614A (en) | 2022-10-26 | 2022-10-26 | Noise reduction device and communication equipment |
| PCT/CN2023/096099 WO2024087606A1 (en) | 2022-10-26 | 2023-05-24 | Noise reduction apparatus and communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211321215.4A CN117967614A (en) | 2022-10-26 | 2022-10-26 | Noise reduction device and communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117967614A true CN117967614A (en) | 2024-05-03 |
Family
ID=90829898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211321215.4A Pending CN117967614A (en) | 2022-10-26 | 2022-10-26 | Noise reduction device and communication equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117967614A (en) |
| WO (1) | WO2024087606A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102318459A (en) * | 2011-08-01 | 2012-01-11 | 华为技术有限公司 | Noise-reducing Device and Ventilation Noise-reducing System |
| CN103021399B (en) * | 2012-11-21 | 2015-11-25 | 华为技术有限公司 | A kind of sound arrester and electronic equipment |
| CN104141638B (en) * | 2014-07-29 | 2017-03-22 | 浪潮集团有限公司 | Fan device achieving active noise reduction |
| CN208806968U (en) * | 2018-06-22 | 2019-04-30 | 常州倍速智能科技有限公司 | A kind of anti-noise noise reduction pavilion with active noise reduction function |
| KR102106799B1 (en) * | 2018-12-03 | 2020-05-06 | 재단법인한국조선해양기자재연구원 | Noise reduction apparatus with natural ventilation function |
-
2022
- 2022-10-26 CN CN202211321215.4A patent/CN117967614A/en active Pending
-
2023
- 2023-05-24 WO PCT/CN2023/096099 patent/WO2024087606A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024087606A1 (en) | 2024-05-02 |
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