CN205425376U - Take active noise reduction's new fan - Google Patents
Take active noise reduction's new fan Download PDFInfo
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- CN205425376U CN205425376U CN201620108334.5U CN201620108334U CN205425376U CN 205425376 U CN205425376 U CN 205425376U CN 201620108334 U CN201620108334 U CN 201620108334U CN 205425376 U CN205425376 U CN 205425376U
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Abstract
The utility model discloses a take active noise reduction's new fan, which comprises an outer shell, be equipped with the new trend fan in the shell and air exhaust the fan, still be equipped with the active noise reduction device in the shell, the active noise reduction device is including sound sensor, audio processor and the voice frequency generator of order connection in proper order, the noise sound wave that the sound sensor produced when gathering the new trend fan and airing exhaust fan work to produce a noise signal according to the noise sound wave, audio processor converts noise signal to anti - noise signal, anti - noise signal control audio generator produces the anti - noise sound wave opposite with noise sound wave amplitude same phase. The utility model discloses an interference between anti - noise sound wave and the noise sound wave, and then make anti - noise sound wave and noise sound wave cancel each other out, reduced the noise of new fan.
Description
Technical field
This utility model relates to new blower fan technical field, particularly to the new blower fan of a kind of band active noise reduction.
Background technology
At present, people are to improve the air quality in room, typically carry out the air in clean room by installing new blower fan, by outdoor new wind suction chamber, and indoor old wind can be discharged to outdoor during the work of new blower fan.During new blower fan work, fresh-air fan and exhaust fan produce the biggest noise, bring bad impact to people's daily life.The noise that brings during in order to reduce the work of new blower fan, typically takes to increase acoustical cotton to reduce noise, but poor effect, and acoustical cotton is not prevented fires, and there is also potential safety hazard.
Utility model content
Main purpose of the present utility model is to provide the new blower fan of a kind of band active noise reduction, it is possible to reduce the noise that the work of new blower fan produces, and reduces the noise impact on user, and excellent noise reduction effect.
In order to realize utility model purpose, this utility model provides the new blower fan of a kind of band active noise reduction, including shell, fresh-air fan and exhaust fan it is provided with in described shell, it is additionally provided with active noise reducing device in described shell, described active noise reducing device includes the sound transducer being linked in sequence successively, audio process and audio-frequency generator, the noise sound wave that described sound transducer produces when gathering fresh-air fan and exhaust fan work, and produce a noise signal according to noise sound wave, noise signal is converted into anti-noise signal by described audio process, described anti-noise signal controls audio-frequency generator and produces an anti-noise sound wave contrary with noise sound wave amplitude same phase.
Preferably, described audio process receives noise signal from described sound transducer, and described noise signal carries out anti-phase process to produce an anti-noise signal contrary with noise signal amplitude same phase, and sends described audio-frequency generator to.
Preferably, described sound transducer is mike, and described audio-frequency generator is speaker.
Preferably, described sound transducer is towards noise source direction, and described audio-frequency generator is back to noise source direction.
Preferably, it is provided with dividing plate between described sound transducer and described audio-frequency generator.
Preferably, being additionally provided with fresh air channel and air exhaust passage in described shell, described fresh-air fan is arranged in fresh air channel, and described exhaust fan is arranged on air exhaust passage.
This utility model is by being provided with active noise reducing device in the shell of new blower fan, the noise sound wave that the sound transducer of active noise reducing device produces when gathering fresh-air fan and exhaust fan work, and produce a noise signal according to noise sound wave, noise signal is converted into anti-noise signal by audio process, and described anti-noise signal controls audio-frequency generator and produces an anti-noise sound wave contrary with noise sound wave amplitude same phase.By the interference between anti-noise sound wave and noise sound wave, and then anti-noise sound wave is cancelled out each other with noise sound wave, reduce the noise of new blower fan.
Accompanying drawing explanation
Fig. 1 is the structural representation of the new blower fan of band active noise reduction in this utility model one embodiment.
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is used only for explaining this utility model, be not used to limit this utility model.
With reference to Fig. 1, Fig. 1 is the structural representation of the new blower fan of band active noise reduction in this utility model one embodiment, a kind of new blower fan of band active noise reduction, including shell 1, fresh-air fan 10 and exhaust fan 20 it is provided with in shell 1, being additionally provided with active noise reducing device 30 in shell 1, active noise reducing device 30 includes sound transducer 31, audio process 32 and the audio-frequency generator 33 being linked in sequence successively.
Concrete, in the present embodiment, fresh air channel 11 and air exhaust passage 21 it is additionally provided with in shell 1, fresh-air fan 10 is arranged in fresh air channel 11, exhaust fan 20 is arranged on air exhaust passage 21, fresh air channel 11 enters indoor for outdoor new wind, outdoor new wind is sucked and is drained into indoor by fresh-air fan 10, new wind entrance 12 with new wind outlet 13 respectively two ends with fresh air channel 11 connect, air exhaust passage 21 is discharged to outdoor for indoor old wind, indoor old wind is discharged to outdoor by exhaust fan 20, air draft entrance 22 with wind exhausting outlet 23 respectively two ends with air exhaust passage 21 connect.
Sound transducer 31 is towards noise source direction, the noise sound wave produced when collection fresh-air fan 10 and exhaust fan 20 work, and produce a noise signal according to noise sound wave, noise signal is converted into anti-noise signal by audio process 32, concrete, audio process 32 receives noise signal from sound transducer 31, and noise signal is carried out anti-phase process to produce an anti-noise signal contrary with noise signal amplitude same phase, and send audio-frequency generator 33 to, anti-noise signal controls audio-frequency generator 33 and produces an anti-noise sound wave contrary with noise sound wave amplitude same phase.
By the interference between anti-noise sound wave and noise sound wave, and then anti-noise sound wave is cancelled out each other with noise sound wave, reduce the noise of new blower fan.It is the most a lot of relative to using acoustical cotton noise reduction that new blower fan uses active noise reducing device 30 noise reduction, and reduces fire risk, and safety is greatly improved, and reduces the noise impact on user.
Optionally, sound transducer 31 is mike, and audio-frequency generator 33 is speaker.
In the present embodiment, audio-frequency generator 33 is back to noise source direction, by audio-frequency generator 33 and the back-to-back setting of sound transducer 31, it is therefore intended that make the direction of sound propagation of audio-frequency generator 33 deviate from sound transducer 31, reduce audio-frequency generator 33 and return to the intensity of sound of sound transducer 31.Further, arranging dividing plate 40 between sound transducer 31 and audio-frequency generator 33, dividing plate 40 can be flat board, it is possible to for other shape and structure, the effect arranging dividing plate 40 is to be that the sound stoping audio-frequency generator 33 returns to sound transducer 31.
Active noise reducing device 30 can be one, the most multiple, when active noise reducing device 30 is multiple, will be in display arrangement between fresh-air fan 10 and exhaust fan 20, use multiple active noise reducing device 30 can provide the noise reduction being more uniformly distributed, but cost can be made to increase, the number of active noise reducing device should be determined the most in actual use according to fresh-air fan 10 and the watt level of exhaust fan 20, the design parameter of active noise reducing device 30 and estimated cost.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (6)
1. the new blower fan of a band active noise reduction, including shell, fresh-air fan and exhaust fan it is provided with in described shell, it is characterized in that, it is additionally provided with active noise reducing device in described shell, described active noise reducing device includes the sound transducer being linked in sequence successively, audio process and audio-frequency generator, the noise sound wave that described sound transducer produces when gathering fresh-air fan and exhaust fan work, and produce a noise signal according to noise sound wave, noise signal is converted into anti-noise signal by described audio process, described anti-noise signal controls audio-frequency generator and produces an anti-noise sound wave contrary with noise sound wave amplitude same phase.
2. the new blower fan of band active noise reduction as claimed in claim 1, it is characterized in that, described audio process receives noise signal from described sound transducer, and described noise signal is carried out anti-phase process to produce an anti-noise signal contrary with noise signal amplitude same phase, and send described audio-frequency generator to.
3. the new blower fan of band active noise reduction as claimed in claim 1, it is characterised in that described sound transducer is mike, and described audio-frequency generator is speaker.
4. the new blower fan of band active noise reduction as claimed in claim 1, it is characterised in that described sound transducer is towards noise source direction, and described audio-frequency generator is back to noise source direction.
5. the new blower fan of band active noise reduction as claimed in claim 1, it is characterised in that be provided with dividing plate between described sound transducer and described audio-frequency generator.
6. the new blower fan of band active noise reduction as claimed in claim 1, it is characterised in that being additionally provided with fresh air channel and air exhaust passage in described shell, described fresh-air fan is arranged in fresh air channel, and described exhaust fan is arranged on air exhaust passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620108334.5U CN205425376U (en) | 2016-02-02 | 2016-02-02 | Take active noise reduction's new fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620108334.5U CN205425376U (en) | 2016-02-02 | 2016-02-02 | Take active noise reduction's new fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205425376U true CN205425376U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620108334.5U Expired - Fee Related CN205425376U (en) | 2016-02-02 | 2016-02-02 | Take active noise reduction's new fan |
Country Status (1)
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| CN (1) | CN205425376U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108734933A (en) * | 2017-04-13 | 2018-11-02 | 广东美的智美科技有限公司 | Range hood and control method |
| CN109340983A (en) * | 2018-11-14 | 2019-02-15 | 湖南麓风建材科技有限公司 | The new blower of window |
| CN110701648A (en) * | 2018-07-10 | 2020-01-17 | 佛山市顺德区合捷电器实业有限公司 | Noise reduction part and range hood |
| CN110762728A (en) * | 2019-09-23 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Indoor air conditioner simulation noise reduction control method and indoor air conditioner |
| CN112484289A (en) * | 2020-11-20 | 2021-03-12 | 珠海格力电器股份有限公司 | Noise reduction device, fresh air fan and noise reduction method |
| CN114165881A (en) * | 2021-12-08 | 2022-03-11 | 江苏中科睿赛污染控制工程有限公司 | New fan and noise reduction method thereof |
| CN115143133A (en) * | 2022-06-07 | 2022-10-04 | 兰溪诸葛南方水泥有限公司 | Novel fan for noise reduction and electricity saving in cement production |
| WO2023035495A1 (en) * | 2021-09-13 | 2023-03-16 | Tcl空调器(中山)有限公司 | Noise type identification method, air conditioner, apparatus, and computer-readable storage medium |
-
2016
- 2016-02-02 CN CN201620108334.5U patent/CN205425376U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108734933A (en) * | 2017-04-13 | 2018-11-02 | 广东美的智美科技有限公司 | Range hood and control method |
| CN110701648A (en) * | 2018-07-10 | 2020-01-17 | 佛山市顺德区合捷电器实业有限公司 | Noise reduction part and range hood |
| CN110701648B (en) * | 2018-07-10 | 2024-05-24 | 佛山市顺德区合捷电器实业有限公司 | Noise reduction component and smoke exhaust ventilator |
| CN109340983A (en) * | 2018-11-14 | 2019-02-15 | 湖南麓风建材科技有限公司 | The new blower of window |
| CN110762728A (en) * | 2019-09-23 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Indoor air conditioner simulation noise reduction control method and indoor air conditioner |
| CN112484289A (en) * | 2020-11-20 | 2021-03-12 | 珠海格力电器股份有限公司 | Noise reduction device, fresh air fan and noise reduction method |
| CN112484289B (en) * | 2020-11-20 | 2021-11-30 | 珠海格力电器股份有限公司 | Noise reduction device, fresh air fan and noise reduction method |
| WO2023035495A1 (en) * | 2021-09-13 | 2023-03-16 | Tcl空调器(中山)有限公司 | Noise type identification method, air conditioner, apparatus, and computer-readable storage medium |
| CN114165881A (en) * | 2021-12-08 | 2022-03-11 | 江苏中科睿赛污染控制工程有限公司 | New fan and noise reduction method thereof |
| CN115143133A (en) * | 2022-06-07 | 2022-10-04 | 兰溪诸葛南方水泥有限公司 | Novel fan for noise reduction and electricity saving in cement production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20190202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |