CN205536473U - Active ventilation noise eliminator - Google Patents
Active ventilation noise eliminator Download PDFInfo
- Publication number
- CN205536473U CN205536473U CN201620071924.5U CN201620071924U CN205536473U CN 205536473 U CN205536473 U CN 205536473U CN 201620071924 U CN201620071924 U CN 201620071924U CN 205536473 U CN205536473 U CN 205536473U
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- China
- Prior art keywords
- noise
- speaker
- controller
- hole
- pipe laying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Duct Arrangements (AREA)
Abstract
The utility model discloses an active ventilation noise eliminator, including detaining case, controller, leading sensor, mistake differential sensors and employing the speaker, the controller is installed on detaining the case, leading sensor is connected to the controller for the noise source noise signal that will gather sends for the controller, employ speaker connection director, install and keep away from noise source one side at leading sensor for send and offset sound in order to offset the noise that the noise source was sent, mistake differential sensors connection director, and install and keep away from noise source one side employing the speaker for the noise that sends the noise source sends for the controller with the stack noise signal who offsets who employs that the speaker sends. This noise eliminator integrated sensor, controller and actuator can be installed on the pipeline wall in an organic whole in a flexible way, realize the interior denoising of ventilation pipe -line system, provide high noise elimination volume, compact structure, little volume, low weight, the low noise damping means of resistance loss for the occasion that expects much to the ventilation noise.
Description
Technical field
This utility model relates to noise control technique field, particularly relates to ventilating system noise control
Applied technical field, is particularly well-suited to ventilation and air conditioning system pipeline air outlet noise is limited requirement
High place.
Background technology
Sound pollution is a global environmental problem, the sound pollution of the excess physiology to people
All have an impact with psychology.China quickly increases as an economy, urbanization is accelerated day by day sends out
Exhibition Chinese Home, the construction with public building the most industrial, civilian, ventilation and air conditioning system engineering
Increase, one of blower fan main noise polluter having become as city.Simultaneously along with noise level limit
Division more and more harsh, the fan noise of industrial undertaking pollutes to be paid close attention to the most widely.Cause
This, fan noise controls to become an extremely important and urgent job.
" the noise grade rule on ship " of International Maritime Organization (IMO) newly revision is in 2014
On July 1, in comes into effect, and the restriction of noise grade is modified and by pressure by new criteria
Property perform, the accommodation of the such as 10,000 above boats and ships of gross ton and the noise level limit of medical area from
60dB is lowered to 55dB, and dining room, the noise level limit of recreational area are lowered to 60dB from 65dB,
The noise level limit of other working areas is lowered to 85dB from 90dB.Vibration at active force equipment is made an uproar
In the case of sound is effectively controlled, the contribution amount of cabin noise is just highlighted by blower fan,
Therefore fan noise must be taked effective control measure.
Fan noise mainly includes air power noise (i.e. pneumatic noise) and mechanical noise two
Part, wherein intensity is the highest, and what impact was maximum is air power noise.Air pertormance is made an uproar
Sound can be divided into again rotational noise (i.e. exhaust noise) and eddy current crack, and the former presents by noise spectrum
In, low frequency characteristic, the latter then presents medium, high frequency characteristic.Reduce the air of ventilation and air conditioning system
Aerodynamic Noise of A most common method is to use acoustic filter.Conventional acoustic filter have dissipative muffler,
Reactive muffler and impedance composite muffler three kinds, these three acoustic filter belongs to passive fall
Make an uproar measure, also cry passive noise control measure.For noise reduction, dissipative muffler in,
The excellent noise reduction effect of high frequency treatment, but to low frequency almost without effect；Although reactive muffler is to spy
Fixed low-frequency noise can have good noise reduction, but its noise reduction frequency range is the most narrow, equipment
Bulky, and it is only used for specific occasion；The sound deadening capacity of impedance composite muffler and noise elimination
Frequency range is the most more satisfactory, but its is bulky, impacts at high temperature, vapours attack and high velocity air
Lower service life is shorter, in addition, uses acoustic filter also can bring pipeline to varying degrees
The unfavorable factors such as aerodynamic characteristic loss.In ventilation and air conditioning system, noise problem occurs frequently in low frequency
Section, it is possible to use space very limited, simultaneously wish that again duct pressure loss is the least,
In order to solve the problems referred to above, active-passive composite formula active silencer is used to become a kind of effective solution
Certainly way.
Active-passive composite formula active silencer is that utilization has on the basis of passive acoustic wave filter structure
Source noise control technology produce in noise elimination cavity section one with by noise constant amplitude, anti-phase sound wave,
Noise is offset by sound wave interference cancellation principle.Active silencer typically can eliminate two times
The low frequency random noise of sound interval, noise reduction reaches 15～20dB；For single-frequency noise, noise reduction can
Reaching 20～30dB, typical deadening frequency band is 40～400Hz.Middle and high in conjunction with passive acoustic filter
Frequently the obvious characteristic of soundproof effect, carrying out research based on active-passive composite formula active silencer is
Necessary.
From the seventies and eighties in last century, Study on Active Control based on duct noise forms upsurge.
Abroad having had the active silencer of several model to come into operation at present, sale price of market is not yet
Disconnected decline.Than the development of external active silencer, the domestic research report about active silencer
Road concentrates on universities and colleges and institute substantially, and ripe application is several without report.
Utility model content
In view of drawbacks described above of the prior art or deficiency, this utility model provides a kind of active logical
Emaciation due to emotional upset acoustic device, including detaining case, controller, front sensors, error pick-up and employing
Speaker, described controller is arranged on described button case；
Described front sensors is connected to described controller, for the noises from noise sources that will collect
Signal is sent to controller；
Described employ speaker connect described controller, be arranged on described front sensors away from
Described noise source side, for sending counteracting sound to offset the noise that described noise source sends；
Described error pick-up connects described controller, and is arranged on that described to employ speaker remote
From described noise source side, raise one's voice for noise and described the employing that described noise source is sent
The superimposed noise signal of the counteracting sound that device sends is sent to described controller.
Compared with prior art, the beneficial effects of the utility model are:
The active ventilated silencing apparatus that this utility model provides, integrated sensor, controller and work
Dynamic device, in one, can be arranged on duct wall, it is achieved that air pipeline intrasystem noise flexibly
Elimination, give and ventilation noise required that high occasion provides high sound deadening capacity, compact conformation, corpusculum
The oise damping means long-pending, low weight, drag losses are low.
Accompanying drawing explanation
By reading retouching in detail with reference to made non-limiting example is made of the following drawings
Stating, other features, purpose and advantage will become more apparent upon:
The Active control silencing apparatus structural representation that Fig. 1 this utility model provides；
Description of reference numerals:
1-detains case；2-controller；3-front sensors；4-error pick-up；
5-employs speaker；6-central dividing plate；7-stuffing-box；
8-absorbs sound cotton；9-base plate；10-pipe laying；11-front sensors mounting seat；
12-error pick-up mounting seat；13-caulking gum
Detailed description of the invention
With embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It is appreciated that
, specific embodiment described herein is used only for explaining relevant utility model, rather than right
The restriction of this utility model.It also should be noted that, for the ease of describing, in accompanying drawing only
Show the part relevant to utility model.
It should be noted that in the case of not conflicting, the embodiment in the application and embodiment
In feature can be mutually combined.Describe this below with reference to the accompanying drawings and in conjunction with the embodiments in detail
Application.
As it is shown in figure 1, present embodiments provide active ventilated silencing apparatus, including button case 1,
Controller 2, front sensors 3, error pick-up 4 and employ speaker 5, controller 2
It is arranged on button case 1；
Front sensors 3 is connected to controller 2, for the noises from noise sources signal that will collect
It is sent to controller 2；
Employ speaker 5 and connect controller 2, be arranged on front sensors 3 away from noise source
Side, for sending counteracting sound to offset the noise that noise source sends；
Error pick-up 4 connects controller 2, and is arranged on and employs speaker 5 away from noise
Side, source, for the noise that sent by noise source with employ counteracting sound that speaker 5 sends
Superimposed noise signal is sent to controller 2.
The active ventilated silencing apparatus that this utility model embodiment provides, integrated sensor, control
Device and actuator, in one, can be arranged on duct wall, it is achieved that air pipeline system flexibly
The elimination of interior noise, give ventilation noise is required high occasion provide high sound deadening capacity, compact conformation,
The oise damping means that small size, low weight, drag losses are low.
Such as Fig. 1, further, during the button case 1 that this utility model embodiment provides is internally provided with
Space bar 6, employs scattered by button case 1 of counteracting sound that speaker 5 sends for reducing
The intensity that hot hole is propagated outside button case 1.
In utility model embodiment, detain case internal controller be internally connected with power supply and power amplifier unit,
Certain heat can be produced in the case of working long hours, therefore to heat radiation, at controller
Around offer louvre.But due to offering of louvre, employ the counteracting that speaker sends
Sound blazes abroad easily by louvre, produces new noise outside pipeline section to be controlled.Due to centre
Arranging of dividing plate can separate employing speaker with louvre, greatly reduces by button case
On louvre to button case outside propagate counteracting sound intensity.
Such as Fig. 1, further, the central dividing plate that this utility model embodiment provides is provided with
Stuffing-box through hole, is provided with stuffing-box 7 in stuffing-box through hole, for error pick-up 4
Connecting line is connected on controller 2 by stuffing-box 7.Error pick-up and the connection of controller
Line is connected by the stuffing-box of central dividing plate, and one can make connecting line cabling reasonable, two be due to
The installation of stuffing-box makes counteracting sound will not be blazed abroad by stuffing-box through hole.
Such as Fig. 1, further, the active ventilated silencing apparatus that this utility model embodiment provides,
It is provided with sound absorption cotton in button case 1 inside and at the rightabout employing speaker 5 voice directions
8.The impact employing the sound wave make-up case that the speaker back side sends is reduced by sound absorption cotton, it is to avoid
Casing vibrates.
Such as Fig. 1, further, the button case 1 that this utility model embodiment provides is provided with base plate 9,
Employing speaker 5 to be arranged on base plate 9, base plate offers error pick-up through hole, is used for
Error pick-up 4 is deeply detained in case 1 by error pick-up through hole, and base plate 1 is further opened with making
Employ speaker hole, employ speaker 5 and send outside button case 1 by employing speaker hole
Counteracting sound.At the scene in installation process, can employ speaker be arranged on button case base plate
On, it is also possible to it is arranged on ventilation shaft to be eliminated the noise employing speaker, as waited to eliminate the noise
Ventilation shaft is a square tube, so can be arranged on wait to eliminate the noise employing speaker easily
Ventilation shaft on, if ventilation shaft to be eliminated the noise is a pipeline having arc, such as pipe,
Then employing loudspeaker body long-pending relatively big, bad being arranged on treats, on silencing ventilating pipe road, at this time may be used
To be arranged on the plane bottom plate that button case is arranged, at this moment significantly facilitated by the setting of plane bottom plate
Employ the installation of speaker.
Such as Fig. 1, further, the active ventilated silencing apparatus that this utility model embodiment provides
Also include that pipe laying 10, button case 1 are movably arranged on pipe laying 10, as button box fastener exists
On pipe laying；
Being provided with front sensors sensing hole on pipe laying 10, front sensors 3 is by front
Put sensor sensing hole detection noise signal in the incoming pipe laying in silencing ventilating pipe road 10；
Being provided with error pick-up sensing hole on pipe laying 10, error pick-up 4 is by by mistake
Noise signal through counteracting sound superposition in gap sensor sensing hole detection pipe laying 10；
Pipe laying 10 is provided with speaker vocal hole, employs speaker 5 by raising one's voice
Device vocal hole sends counteracting sound in pipe laying 10.
By in advance button case being arranged on pipe laying, as long as will wait when installing on the spot to eliminate the noise
Ventilation shaft dock with pipe laying just can start eliminate the noise, be very easy to site operation
Difficulty, improve in-site installation efficiency.
Such as Fig. 1, further, the active ventilated silencing apparatus that this utility model embodiment provides
Also including front sensors mounting seat 11, front sensors 3 is by front sensors mounting seat 11
It is fixed on pipe laying 10.Sensor is fixed, then before keeping by front sensors mounting seat
Put sensor stabilization, be arranged on pipeline quickly and easily, base plate can also be arranged on simultaneously
On.This utility model is arranged on pipe laying.
Such as Fig. 1, further, the active ventilated silencing apparatus that this utility model embodiment provides
Also including error pick-up mounting seat 12, error pick-up 4 is by error pick-up mounting seat 12
It is fixed on pipe laying 10.Fix sensor by error pick-up mounting seat, then keep by mistake
Gap sensor is stablized, is arranged on pipeline quickly and easily.
Such as Fig. 1, further, the pipe laying 10 sidewall peace that this utility model embodiment provides
Equipped with sound absorption cotton 8, sound absorption is cotton at pipe laying 10 front sensors sensing hole, error pick-up
Sensing hole and speaker occur hole correspondence position to be provided with supporting through hole.One is entered by sound absorption cotton
The noise in silencing ventilating pipe road is treated in step reduction.
Such as Fig. 1, further, the button case 1 of this utility model embodiment offer and pipe laying
Caulking gum 13 it is provided with between 10 contact surfaces.Make to detain that case and pipe laying coordinate is tighter
Close, it is substantially reduced simultaneously and employs the intensity that the counteracting sound that speaker sends outwards is propagated.
The operation principle of the active ventilated silencing apparatus that this utility model provides is:
During work, upstream noise enters controller, error pick-up through front sensors collection
Signal is also given controller by pickup downstream noise signal, and this signal is to employ speaker to send
The counteracting sound come and the superimposed noise of upstream noise.The upstream and downstream signal conduct that controller receives
The input of system, is constantly adjusted by adaptive algorithm and employs speaker output signal, finally
Reach the effect eliminated the noise.
Above description is only the preferred embodiment of the application and saying institute's application technology principle
Bright.It will be appreciated by those skilled in the art that utility model scope involved in the application, and
It is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain not simultaneously
In the case of departing from the design of described utility model, above-mentioned technical characteristic or its equivalent feature carry out
Combination in any and other technical scheme of being formed.Such as features described above with disclosed herein (but
It being not limited to) technical characteristic with similar functions replaces mutually and the technical scheme that formed.
Claims (10)
1. an active ventilated silencing apparatus, it is characterised in that include detaining case, controller, front
Putting sensor, error pick-up and employ speaker, described controller is arranged on described button case
On；
Described front sensors is connected to described controller, for the noises from noise sources that will collect
Signal is sent to controller；
Described employ speaker connect described controller, be arranged on described front sensors away from
Described noise source side, for sending counteracting sound to offset the noise that described noise source sends；
Described error pick-up connects described controller, and is arranged on that described to employ speaker remote
From described noise source side, raise one's voice for noise and described the employing that described noise source is sent
The superimposed noise signal of the counteracting sound that device sends is sent to described controller.
Active ventilated silencing apparatus the most according to claim 1, it is characterised in that in institute
State button case and be internally provided with central dividing plate, described employ the counteracting that speaker sends for reducing
Sound buckles the intensity of propagation outside case by the louvre on described button case to described.
Active ventilated silencing apparatus the most according to claim 2, it is characterised in that in institute
State and on central dividing plate, be provided with stuffing-box through hole, in described stuffing-box through hole, stuffing-box is installed,
Connecting line for described error pick-up is connected on described controller by described stuffing-box.
Active ventilated silencing apparatus the most according to claim 2, it is characterised in that in institute
State button case inside and the described rightabout employing speaker voice directions is provided with sound absorption
Cotton.
Active ventilated silencing apparatus the most according to claim 1, it is characterised in that described
Button case is provided with base plate, and described speaker of employing is arranged on described base plate, and described base plate is opened
It is provided with error pick-up through hole, for error pick-up by described error pick-up through hole deeply
In described button case, described base plate offers employs speaker hole, and described speaker of employing leads to
Cross described speaker hole of employing and send counteracting sound outside described button case.
Active ventilated silencing apparatus the most according to claim 1, it is characterised in that also wrap
Including pipe laying, described button case is movably arranged on described pipe laying；
Being provided with front sensors sensing hole on described pipe laying, described front sensors leads to
Cross described front sensors sensing hole and detect noise signal in described pipe laying；
Being provided with error pick-up sensing hole on described pipe laying, described error pick-up leads to
Cross described error pick-up sensing hole and detect noise signal in described pipe laying；
Being provided with speaker vocal hole on described pipe laying, described speaker of employing passes through
Described speaker vocal hole sends counteracting sound in described pipe laying.
Active ventilated silencing apparatus the most according to claim 6, it is characterised in that also wrap
Including front sensors mounting seat, described front sensors is solid by described front sensors mounting seat
It is scheduled on described pipe laying.
Active ventilated silencing apparatus the most according to claim 6, it is characterised in that also wrap
Including error pick-up mounting seat, described error pick-up is solid by described error pick-up mounting seat
It is scheduled on described pipe laying.
Active ventilated silencing apparatus the most according to claim 6, it is characterised in that described
Pipe laying sidewall is provided with sound absorption cotton, and described sound absorption is cotton at described pipe laying front sensors
Sensing hole, described error pick-up sensing hole and described speaker occur hole correspondence position to be provided with
Supporting through hole.
10., according to the arbitrary described active ventilated silencing apparatus of claim 6-9, its feature exists
In, it is provided with caulking gum between described button case and described pipe laying contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620071924.5U CN205536473U (en) | 2016-01-25 | 2016-01-25 | Active ventilation noise eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620071924.5U CN205536473U (en) | 2016-01-25 | 2016-01-25 | Active ventilation noise eliminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205536473U true CN205536473U (en) | 2016-08-31 |
Family
ID=56769433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620071924.5U Withdrawn - After Issue CN205536473U (en) | 2016-01-25 | 2016-01-25 | Active ventilation noise eliminator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205536473U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509292A (en) * | 2016-01-25 | 2016-04-20 | 中国船舶重工集团公司第七一一研究所 | Active ventilation muffler |
| CN110530003A (en) * | 2019-09-10 | 2019-12-03 | 深圳市欣睿达环保工程有限公司 | A kind of electronic phase angle silencer |
| CN111981236A (en) * | 2020-07-14 | 2020-11-24 | 江苏科技大学 | Silencing device for actively modulating frequency and changing stop band and silencing method thereof |
| WO2021098331A1 (en) * | 2019-11-18 | 2021-05-27 | 中科振声（苏州）电子科技有限公司 | Noise reduction distribution box, air conditioner pipeline system and air conditioner |
-
2016
- 2016-01-25 CN CN201620071924.5U patent/CN205536473U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509292A (en) * | 2016-01-25 | 2016-04-20 | 中国船舶重工集团公司第七一一研究所 | Active ventilation muffler |
| CN105509292B (en) * | 2016-01-25 | 2019-05-24 | 中国船舶重工集团公司第七一一研究所 | A kind of active ventilated silencing apparatus |
| CN110530003A (en) * | 2019-09-10 | 2019-12-03 | 深圳市欣睿达环保工程有限公司 | A kind of electronic phase angle silencer |
| WO2021098331A1 (en) * | 2019-11-18 | 2021-05-27 | 中科振声（苏州）电子科技有限公司 | Noise reduction distribution box, air conditioner pipeline system and air conditioner |
| CN111981236A (en) * | 2020-07-14 | 2020-11-24 | 江苏科技大学 | Silencing device for actively modulating frequency and changing stop band and silencing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170111 Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 building 4 Patentee after: SHANGHAI QIYAO SYSTEM ENGINEERING CO., LTD. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: No.711 Inst., Chinese Ship Heavy-Industry Group Corp. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20190524 |
|
| AV01 | Patent right actively abandoned |