CN201730496U - Active ventilation sound-insulating window - Google Patents
Active ventilation sound-insulating window Download PDFInfo
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- CN201730496U CN201730496U CN2010202397696U CN201020239769U CN201730496U CN 201730496 U CN201730496 U CN 201730496U CN 2010202397696 U CN2010202397696 U CN 2010202397696U CN 201020239769 U CN201020239769 U CN 201020239769U CN 201730496 U CN201730496 U CN 201730496U
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Abstract
The utility model discloses an active ventilation sound-insulating window, which comprises a sound-insulating window. An active sound-insulating ventilation device is arranged on the sound-insulating window and comprises a ventilation channel and an active noise control device which are communicated with the indoor and the outdoor. According to the utility model, the active sound-insulating ventilation device is arranged on the traditional ventilation sound-insulating window; low-frequency noise can be offset and absorbed by using an active noise control technology; and meanwhile, medium-high frequency noise is absorbed by using a sound-absorbing layer made of sound-absorbing material paved on the inner wall of the ventilation channel and a sound-absorbing structure inside the ventilation channel, so that the low-frequency noise and high-frequency noise can be effectively reduced under the condition of keeping favorable ventilation performance.
Description
Technical field
The utility model relates to a kind of building oise damping means, particularly relates to a kind of Active noise control using technology of utilizing and realizes both satisfying air-conditioning requirement, can effectively insulate against sound again to guarantee the quiet active ventilated and soundproof window of architecture indoor.
Background technology
No matter the window that existing building is installed is timber window, steel sash, aluminum window, plastic-steel window etc., and main function is exactly daylighting and ventilation.Because process of urbanization is more and more faster, noise pollution has become one of importance of environment pollution, amusement noise between the traffic noise on the street, the construction noise in building site, neighbourhood or the like, make us restless by day and sleepless by night, the difficult peace of sleeping and eating.
Adopting sound proof window to administer the building noise at present is a kind of ideal method, particularly apparent in view at the traffic noise effect.But, people's custom of ventilating of windowing can cause the sound insulation property of sound proof window directly to descend, therefore there is the problem of " it is noisy dead to window; close window and suppress extremely " in common sound proof window, though and noise reduction measure centering, high-frequency noises such as employing sound insulating structure or sound absorption material are comparatively effective, and are little to the control effect of low-frequency noise.
Now, appearing to a certain extent of ventilated and soundproof window can address the above problem, but ventilated and soundproof window is being handled level of noise such as site construction noise, railway, airport noise above 80-90dB, when concentrating on the noise of low frequency below 250, noise energy has very big problem, usually need be cost to sacrifice ventilation,, reduce measure such as air channel area and solve low-frequency noise sound insulation problem by increasing vent passages bending number of times, thereby the manufacture craft difficulty is increased greatly, and cost of manufacture is also high.
The utility model content
Goal of the invention of the present utility model is, at the problem of above-mentioned existence, provides a kind of and all can effectively insulate against sound to low-frequency noise and high-frequency noise, and have the active ventilated and soundproof window of performance of ventilating well.
The utility model adopts the Active noise control using technology, is called the noise ACTIVE CONTROL again, is called for short ANC, is the new method that appliance computer and electronic technology are carried out noise control, it is advantageous that the control to low-frequency noise.Its main thought is: produce artificially in the sound field control area one equate with noise magnitudes of acoustic waves to be controlled, sound wave that phase place is opposite, both backs that superpose, front and back are realized destructive interference and are reached the noise elimination purpose.General title noise source is elementary sound source, and the sound source that produces the control sound wave is called secondary sound source.The theoretical foundation of the active control of noise is the Young interference theory of sound wave, promptly as can be known by the linear superposition theorem of sound field, when frequency identical, when two row sound waves of constant phase difference meet, produce mutual interference in the space, as shown in Figure 1, when elementary sound source and secondary sound source amplitude equate, when phase place is opposite, for elementary sound source, just can in certain zone, reach the effect of noise elimination.
The technical solution of the utility model is: a kind of active ventilated and soundproof window, comprise sound proof window, it is characterized in that: described sound proof window is provided with active sound insulation ventilation installation, and described active sound insulation ventilation installation comprises vent passages and the active noise control system that communication chamber is inside and outside;
Described active noise control system comprises secondary sound source, sensor and adaptive active controller, described secondary sound source is arranged on the wall of vent passages, described sensor be arranged on the indoor air intake that is communicated with and with the outdoor air outlet place that is communicated with, described secondary sound source and sensor are electrically connected with described adaptive active controller.
Active ventilated and soundproof window described in the utility model, its described sound proof window comprise inside and outside two-layer window frame, and described vent passages is arranged between the inside and outside two-layer window frame.
Active ventilated and soundproof window described in the utility model, its described vent passages is made of sound barrier, is provided with absorbent treatment at described vent passages inwall.
Active ventilated and soundproof window described in the utility model, its described sensor that is arranged at the air intake place is the microphone of unidirectivity characteristic.
Active ventilated and soundproof window described in the utility model, its in described vent passages, with the vent passages level be provided with at least one microwell plate.
Active ventilated and soundproof window described in the utility model, its described microwell plate is divided into the uniform airflow passage with vent passages.
Active ventilated and soundproof window described in the utility model, its described secondary sound source is a loudspeaker.
The existing ventilated and soundproof window of the utility model is provided with source sound insulation ventilation installation, utilize the Active noise control using technology that low-frequency noise is offset absorption, adopt simultaneously at the vent passages inwall and lay the absorbent treatment that constitutes by sound absorption material and the sound absorption construction of vent passages inside absorbs high-frequency noises, under the situation that keeps the good ventilation performance, also can carry out noise reduction process effectively like this to low-frequency noise and high-frequency noise.
Description of drawings
Fig. 1 is the Young principle of interference.
Fig. 2 is the stereogram of the utility model embodiment one.
Fig. 3 is the vertical view of the utility model embodiment one.
Fig. 4 is the front view of the utility model embodiment one.
Fig. 5 is the stereogram of the utility model embodiment two.
Fig. 6 is the vertical view of the utility model embodiment two.
Fig. 7 is the front view of the utility model embodiment two.
Mark among the figure: 1 is sound proof window, and 2 is vent passages, and 3 is secondary sound source, and 4 is reference sensor, and 5 is error pick-up, and 6 is air intake, and 7 is air outlet, and 8 is absorbent treatment, and 9 is microwell plate.
The specific embodiment
Disclosed all features in this manual, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this manual (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Embodiment one: shown in Fig. 2,3 and 4, a kind of active ventilated and soundproof window, comprise sound proof window 1, described sound proof window 1 comprises inside and outside two-layer window frame, described sound proof window 1 is provided with active sound insulation ventilation installation, and described active sound insulation ventilation installation comprises vent passages 2 and the active noise control system that communication chamber is inside and outside.Described vent passages 2 is made of sound barrier, also can directly be made of the sound proof window window frame, is provided with the absorbent treatment 8 that is made of 2cm sound absorption woollen blanket at described vent passages 2 inwalls.
Wherein, described vent passages 2 is arranged between the described inside and outside two-layer window frame, described active noise control system comprises secondary sound source 3, sensor and adaptive active controller, described secondary sound source 3 is arranged on the side wall surface of vent passages 2, described secondary sound source 3 is a loudspeaker, as coil-moving speaker, cone formula loudspeaker, piezo-electric loudspeaker etc.; Described sensor is divided into reference sensor 4 and error pick-up 5, described reference sensor 4 is arranged on and the indoor air intake that is communicated with 6 places, described error pick-up 5 is arranged on and the outdoor air outlet that is communicated with 7 places, described reference sensor 4 and error pick-up 5 array respectively are placed on into, the air outlet wall, the described reference sensor 4 that is arranged at air intake 6 places is the microphone of unidirectivity characteristic, use has the microphone of unidirectivity characteristic as the reference sensor, can directly gather the reference signal of incident-noise signal, pick up the acoustical feedback problem that method solves adaptive control system with reference signal as the adaptive active control system.Described secondary sound source 3 and sensor are electrically connected with described adaptive active controller.
Embodiment two: shown in Fig. 5,6 and 7, a kind of active ventilated and soundproof window, comprise sound proof window 1, described sound proof window 1 comprises inside and outside two-layer window frame, described sound proof window 1 is provided with active sound insulation ventilation installation, and described active sound insulation ventilation installation comprises vent passages 2 and the active noise control system that communication chamber is inside and outside.
Wherein, described vent passages 2 is arranged between the described inside and outside two-layer window frame, described active noise control system comprises secondary sound source 3, sensor and adaptive active controller, described secondary sound source 3 is arranged on the top and the bottom of vent passages 2, described secondary sound source 3 is a loudspeaker, as coil-moving speaker, cone formula loudspeaker, piezo-electric loudspeaker etc.; Described sensor is divided into reference sensor 4 and error pick-up 5, described reference sensor 4 is arranged on and the indoor air intake that is communicated with 6 places, described error pick-up 5 is arranged on and the outdoor air outlet that is communicated with 7 places, described reference sensor 4 and error pick-up 5 array respectively are placed on into, the air outlet wall, the described reference sensor 4 that is arranged at air intake 6 places is the microphone of unidirectivity characteristic, use has the microphone of unidirectivity characteristic as the reference sensor, can directly gather the reference signal of incident-noise signal, pick up the acoustical feedback problem that method solves adaptive control system with reference signal as the adaptive active control system.Described secondary sound source 3 and sensor are electrically connected with described adaptive active controller.
Described vent passages 2 is made of sound barrier, be provided with the absorbent treatment that constitutes by sound absorption material at described vent passages 2 inwalls, in described vent passages 2, eliminate the noise with two microwell plates 9 that are provided with of vent passages 2 levels, microwell plate 9 is isolated into uniform three parts with vent passages 2 simultaneously, and air-flow is carried out rectification.
Operating principle of the present utility model: the operating frequency range of active ventilated and soundproof window is divided into two parts, is the boundary with 500Hz.The above medium-high frequency partial noise of 500Hz is mainly absorbed by the sound absorption material of the vent passages wall that is laid in and the sound absorption construction of vent passages inside, being crisscross arranged of air intake and air outlet, making gas channel is corner formula layout, and corner structure can be propagated obstruct once more to high-frequency noises.Adopt noise reduction measures such as this sound absorption material, sound absorption construction to be called " passive noise control technology ", in general, no source noise is controlled centering, high-frequency noise is comparatively effective, and little to the control effect of low-frequency noise.
To the low-frequency noise below the 500Hz, then adopt the Active noise control using technology, at first noise is entered in the vent passages by air intake, gather the incident-noise signal by the reference sensor that is positioned at the air intake place, noise signal by the error pick-up acquisition of transmission that is positioned at the air outlet place, and convert noise signal to analog signal, be input to the A/D sampling module of adaptive active controller after then the two sensors analog signal being handled through bandpass filter, after becoming data signal with analog signal conversion, the A/D sampling module is input to the computing module of adaptive active controller, the adaptive active controller is according to the value of incident-noise reference signal and transmission noise error signal, use adaptive algorithm to obtain one group of pumping signal, and pumping signal is input to the D/A module of adaptive active controller, convert pumping signal to analog voltage signal, this analog voltage signal flows to secondary sound source by reconfigurable filter and power amplifier at last, it is opposite with the incident sound signal phase that secondary sound source sends, the anti-acoustic signal that amplitude equates, at chain of command to the incident sound counteracting that superposes, the transmission sodar that the final feasible error pick-up that is positioned at the air outlet place collects is to minimum (under the perfect condition, transmission sound is zero).
Adopt the Active noise control using technology low-frequency range below 500Hz to improve the about 10-15dB of forms sound insulation factor, make sound proof window rise to 35-40dB by 20-25dB, arrive high sound insulation factor requirement in the sound insulation factor of the following frequency range of 500Hz.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. an active ventilated and soundproof window comprises sound proof window, it is characterized in that: described sound proof window is provided with active sound insulation ventilation installation, and described active sound insulation ventilation installation comprises vent passages and the active noise control system that communication chamber is inside and outside;
Described active noise control system comprises secondary sound source, sensor and adaptive active controller, described secondary sound source is arranged on the wall of vent passages, described sensor be arranged on the indoor air intake that is communicated with and with the outdoor air outlet place that is communicated with, described secondary sound source and sensor are electrically connected with described adaptive active controller.
2. active ventilated and soundproof window according to claim 1 is characterized in that: described sound proof window comprises inside and outside two-layer window frame, and described vent passages is arranged between the inside and outside two-layer window frame.
3. active ventilated and soundproof window according to claim 2 is characterized in that: described vent passages is made of sound barrier, is provided with absorbent treatment at described vent passages inwall.
4. active ventilated and soundproof window according to claim 3 is characterized in that: the described sensor that is arranged at the air intake place is the microphone of unidirectivity characteristic.
5. according to any described active ventilated and soundproof window in the claim 1 to 4, it is characterized in that: in described vent passages, with the vent passages level be provided with at least one microwell plate.
6. active ventilated and soundproof window according to claim 5 is characterized in that: described microwell plate is divided into the uniform airflow passage with vent passages.
7. active ventilated and soundproof window according to claim 6 is characterized in that: described secondary sound source is a loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202397696U CN201730496U (en) | 2010-06-28 | 2010-06-28 | Active ventilation sound-insulating window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202397696U CN201730496U (en) | 2010-06-28 | 2010-06-28 | Active ventilation sound-insulating window |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201730496U true CN201730496U (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202397696U Expired - Fee Related CN201730496U (en) | 2010-06-28 | 2010-06-28 | Active ventilation sound-insulating window |
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| Country | Link |
|---|---|
| CN (1) | CN201730496U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852056A (en) * | 2010-06-28 | 2010-10-06 | 四川正升声学科技有限公司 | Active ventilated and soundproof window |
| EP2947649A3 (en) * | 2014-05-22 | 2015-12-30 | WaveScape Technologies GmbH | Assembly for the reduction of sound |
-
2010
- 2010-06-28 CN CN2010202397696U patent/CN201730496U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852056A (en) * | 2010-06-28 | 2010-10-06 | 四川正升声学科技有限公司 | Active ventilated and soundproof window |
| EP2947649A3 (en) * | 2014-05-22 | 2015-12-30 | WaveScape Technologies GmbH | Assembly for the reduction of sound |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Sichuan Zhengsheng Environmental Protection Technology Co.,Ltd. Assignor: Sichuan Zhengsheng Acoustic Technology Co., Ltd. Contract record no.: 2011510000101 Denomination of utility model: Active ventilated and soundproof window Granted publication date: 20110202 License type: Exclusive License Record date: 20110712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20150628 |
|
| EXPY | Termination of patent right or utility model |