CN207113187U - A kind of active ventilated silencing apparatus - Google Patents
A kind of active ventilated silencing apparatus Download PDFInfo
- Publication number
- CN207113187U CN207113187U CN201721038098.5U CN201721038098U CN207113187U CN 207113187 U CN207113187 U CN 207113187U CN 201721038098 U CN201721038098 U CN 201721038098U CN 207113187 U CN207113187 U CN 207113187U
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- China
- Prior art keywords
- active
- silencing
- ventilation shaft
- silencing apparatus
- ventilated
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- Expired - Fee Related
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
It the utility model is related to noise control technique field, disclose a kind of active ventilated silencing apparatus, including ventilation shaft and silencing pipeline, the openend of the ventilation shaft sets blower fan, the other end of the ventilation shaft and the position of the blower fan face set active noise reducing device, the silencing pipeline and the ventilation shaft vertical connection, one end of the silencing pipeline connect with the side wall of the ventilation shaft, are covered on the inwall of the silencing pipeline and are fixed with micropore sound absorbing layer.It the active ventilated silencing apparatus of the utility model example, can effectively suppress the noise of blower fan, reduce noise pollution of the noise to Workplace.
Description
Technical field
Noise control technique field is the utility model is related to, more particularly to a kind of active ventilated silencing apparatus.
Background technology
Generally need to be aerated using blower fan in large-scale manufacturing enterprise, traditional fan noise is bigger, to producing field
Existing noise jamming, noise intensity are existing more than country typically at 90~105dB (A)《Industrial enterprise's noise health mark
It is accurate》.To be reported according to domestic and international research, Long Term Contact is more than 85dB (A) noise except that can cause specific hearing loss,
The non-specific injury of the systems such as nervous system, angiocarpy can also be caused.Therefore, the protection of noise is related to operating personnel's
The prevention of health and disease.
It is by German thing earliest that active Active Noise Control technology, which is also active noise cancellation technology ANC (ActiveNoiseControl),
What neo-confucian PaulLeug proposed in 1933, by acquisition noise signal is shifted, after gain process, release and raw noise
Sonic wave amplitude is identical but the secondary noise of opposite in phase offsets with raw noise, so as to reach the purpose for eliminating noise.Therefore,
A ventilation unit can with active silencing means is needed, realizes ventilating noise-elimination function.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of active ventilated silencing apparatus, to have
Effect suppresses the noise of blower fan, reduces noise pollution of the noise to Workplace.
The utility model adopts the following technical scheme that：
A kind of active ventilated silencing apparatus is provided, its structure includes：
Ventilation shaft and silencing pipeline, the openend of the ventilation shaft set blower fan, the other end of the ventilation shaft
Active noise reducing device, the silencing pipeline and the ventilation shaft vertical connection are set with the position of the blower fan face, it is described
One end of silencing pipeline connects with the side wall of the ventilation shaft, is covered on the inwall of the silencing pipeline and is fixed with micropore suction
Sound-absorbing layer.
Further, the other end of the ventilation shaft is provided with active noise reducing device mounting seat.
Further, the active noise reducing device includes reference sensor, error pick-up, secondary sound source and Active control
Device.
Further, the error pick-up is located at the top of the active noise reducing device, and the secondary sound source is located at institute
State below error pick-up, for the reference sensor below the secondary sound source, the active controller is located at the ginseng
Examine below sensor.
Further, the secondary sound source uses unidirectivity loudspeaker.
Further, the error microphone uses general microphone.
Further, the silencing pipeline using double-deck tempering glass system into being set between the double-deck safety glass
There is acoustic material.Silencing pipeline using double-deck tempering glass system into, and acoustic material is provided between double-deck safety glass, can
Effectively to prevent noise from being transmitted to outside silencing pipeline.
Further, the silencing pipeline using double-deck tempering glass system into being set between the double-deck safety glass
There is sound-absorbing material, the safety glass positioned at internal layer is provided with micropore.Pass through the micropore and sound absorber of the safety glass of internal layer
Material, can further absorb the noise in noise elimination pipeline.
Its operation principle：
The beneficial effects of the utility model are：
1st, the active ventilated silencing apparatus of the utility model example, wind caused by blower fan enter hush pipe through ventilation shaft
Road, the low-frequency noise and part mid-frequency noise in noise caused by blower fan are i.e. single in the secondary sound source for being arranged on ventilation shaft end
Directional loudspeaker sends anti-reflective ripple and carries out neutralization elimination, and residual noise is gathered by error pick-up and feeds back to Active control
Device, it is easy to its optimized algorithm and makes its sounding to secondary sound source transmission signal, so circulation is finally reached elimination reduction low frequency and made an uproar
The purpose of sound.Noise is further absorbed, arrival disappears when by silencing pipeline by the micropore sound absorbing layer on silencing pipeline inwall
Sound purpose.
2nd, the active ventilated silencing apparatus of the utility model example, noise elimination pipeline use double-deck safety glass, have good
Noise reduction the advantages of, pipeline does not leak out, and effectively solves ventilation not noise reduction and the nonventilated contradiction of noise reduction, the elimination to noise is more
Thoroughly, ventilation is ensured.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 is the sectional view of the silencing pipeline of the utility model embodiment 1；
Fig. 3 is the sectional view of the silencing pipeline of the utility model embodiment 2.
In figure：1- ventilation shafts, 2- silencing pipelines, 3- blower fans, 4- reference sensors, 5- microphones, 6- unidirectivities are raised
Sound device, 7- active controllers, 8- micropore sound absorbing layers, 9- acoustic materials, 10- sound-absorbing materials, 11- micropores, 12- active noise reducing devices
Mounting seat.
Embodiment
In order to be better understood by the technical solution of the utility model, with reference to Figure of description and specific embodiment to this
Utility model is described further.
Embodiment 1
As depicted in figs. 1 and 2, a kind of active ventilated silencing apparatus, including ventilation shaft 1 and silencing pipeline 2, ventilation shaft
1 openend sets blower fan 3, and the other end of ventilation shaft 1 sets active noise reducing device mounting seat with the position of the face of blower fan 3
12, active noise reducing device is installed, active noise reducing device includes reference sensor 4, Mike in active noise reducing device mounting seat 12
Wind 5, unidirectivity loudspeaker 6 and active controller 7.Microphone 5 is located at the top of the active noise reducing device, and unidirectivity is raised
Below microphone 5, reference sensor 4 is located at reference to biography sound device 6 located at the lower section of unidirectivity loudspeaker 6, active controller 7
The lower section of sensor 4.
Silencing pipeline 2 and the vertical connection of ventilation shaft 1, one end of silencing pipeline 2 connect with the side wall of ventilation shaft 1,
Covering is fixed with micropore sound absorbing layer 8 on the inwall of silencing pipeline 2.
Silencing pipeline 2 is using double-deck tempering glass system into being provided with acoustic material 9 between double-deck safety glass.Noise reduction
Pipeline 2 is using double-deck tempering glass system into and being provided with acoustic material between double-deck safety glass, can effectively prevent noise
It is transmitted to outside silencing pipeline.
Embodiment 2
As shown in figure 3, the difference of the present embodiment and above-described embodiment is, silencing pipeline 2 uses double-deck tempering glass
Glass is made, and sound-absorbing material 10 is provided between double-deck safety glass, and the safety glass positioned at internal layer is provided with micropore 11.Pass through
The micropore 11 and sound-absorbing material 10 of the safety glass of internal layer, can further absorb the noise in noise elimination pipeline.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that utility model scope involved in the application, however it is not limited to what the particular combination of above-mentioned technical characteristic formed
Technical scheme, while should also cover in the case where not departing from utility model design, by above-mentioned technical characteristic or its be equal
Other technical schemes that feature is combined and formed.Such as features described above has with (but not limited to) disclosed herein
The technical scheme that the technical characteristic for having similar functions is replaced mutually and formed.
Claims (8)
- A kind of 1. active ventilated silencing apparatus, it is characterised in that including：Ventilation shaft and silencing pipeline, the openend of the ventilation shaft set blower fan, the other end of the ventilation shaft and institute The position for stating blower fan face sets active noise reducing device, the silencing pipeline and the ventilation shaft vertical connection, the noise reduction One end of pipeline connects with the side wall of the ventilation shaft, is covered on the inwall of the silencing pipeline and is fixed with micropore sound-absorbing Layer.
- 2. active ventilated silencing apparatus according to claim 1, it is characterised in that the other end of the ventilation shaft is provided with Active noise reducing device mounting seat.
- 3. active ventilated silencing apparatus according to claim 1, it is characterised in that the active noise reducing device includes reference Sensor, error pick-up, secondary sound source and active controller.
- 4. active ventilated silencing apparatus according to claim 3, it is characterised in that the error pick-up has located at described The top of source denoising device, the secondary sound source is below the error pick-up, and the reference sensor is located at described time Below level sound source, the active controller is below the reference sensor.
- 5. active ventilated silencing apparatus according to claim 3, it is characterised in that the secondary sound source uses unidirectivity Loudspeaker.
- 6. active ventilated silencing apparatus according to claim 3, it is characterised in that the error microphone uses general wheat Gram wind.
- 7. active ventilated silencing apparatus according to claim 1, it is characterised in that the silencing pipeline uses double-deck tempering Glass is made, and acoustic material is provided between the double-deck safety glass.
- 8. active ventilated silencing apparatus according to claim 1, it is characterised in that the silencing pipeline uses double-deck tempering Glass is made, and sound-absorbing material is provided between the double-deck safety glass, is provided with positioned at the safety glass of internal layer micro- Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038098.5U CN207113187U (en) | 2017-08-18 | 2017-08-18 | A kind of active ventilated silencing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038098.5U CN207113187U (en) | 2017-08-18 | 2017-08-18 | A kind of active ventilated silencing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207113187U true CN207113187U (en) | 2018-03-16 |
Family
ID=61569916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721038098.5U Expired - Fee Related CN207113187U (en) | 2017-08-18 | 2017-08-18 | A kind of active ventilated silencing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207113187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020087430A1 (en) * | 2018-10-30 | 2020-05-07 | 中科振声（苏州）电子科技有限公司 | Active noise reduction distribution box for train air conditioner |
| CN111145715A (en) * | 2019-12-27 | 2020-05-12 | 汉得利（常州）电子股份有限公司 | Active noise control system and control method for fan |
-
2017
- 2017-08-18 CN CN201721038098.5U patent/CN207113187U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020087430A1 (en) * | 2018-10-30 | 2020-05-07 | 中科振声（苏州）电子科技有限公司 | Active noise reduction distribution box for train air conditioner |
| CN111145715A (en) * | 2019-12-27 | 2020-05-12 | 汉得利（常州）电子股份有限公司 | Active noise control system and control method for fan |
| CN111145715B (en) * | 2019-12-27 | 2020-08-25 | 汉得利（常州）电子股份有限公司 | Active noise control system and control method for fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20200818 |