CN208487769U - A kind of active noise reducing device for fresh air system - Google Patents
A kind of active noise reducing device for fresh air system Download PDFInfo
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- CN208487769U CN208487769U CN201820956799.5U CN201820956799U CN208487769U CN 208487769 U CN208487769 U CN 208487769U CN 201820956799 U CN201820956799 U CN 201820956799U CN 208487769 U CN208487769 U CN 208487769U
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- fresh air
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- air system
- reducing device
- active noise
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Abstract
The utility model discloses a kind of active noise reducing device for fresh air system, and the fresh air system includes fresh air channel characterized by comprising the sensor on fresh air channel inner sidewall is arranged in, for obtaining signal；Emitter in fresh air channel is set, for emitting noise reduction sound wave；The position for being relatively close to noise source is arranged in relative to emitter for the sensor.The utility model can be effectively reduced fresh air Middle and low frequency noise and part high-frequency noise；The use for reducing the passive noise reduction means such as fresh air system sound-absorbing material, reduces engineering cost；It can need to be adjusted according to fresh air, universality is strong；Fresh air performance itself is not interfered, is secondly guaranteed the air-tightness of pipeline, is prevented gas leak in pipe；Guarantee that the effect of active noise reduction system is optimal.
Description
Technical field
The utility model belongs to the technical field of fresh air system noise reduction, in particular to a kind of master for fresh air system
Dynamic denoising device.
Background technique
Commercial or home fresh air system is there are many places noise problem more outstanding, if fresh air processor internal fan is to interior
When air supply tube conveys fresh air, the noise of processor inner blower can be blowed to pipeline, to reach at air outlet, be examined by human ear
Feel.Secondly the noise and air that intake stack, wind pipe vibration generate hit duct wall or are leading when flowing in pipeline
It flows bend position and forms noise caused by turbulent flow, can all directly affect the auditory perception of indoor people.
At present for the noise problem of the fresh air system of above-mentioned several situations, majority is using passive noise reduction means, such as
The package sound absorption damping material on the outside of pipeline, or silencer is installed inside pipeline.But the Middle and low frequency noise of fresh air is faced,
Traditional noise reduction means noise reduction effect is poor, and mode is cumbersome, and engineering cost is higher, there is noise reduction effect bottleneck more.
It is directed to the active noise reduction means of fresh air system in the prior art, as patent document ZL201711471708.5 is disclosed
A kind of fresh air purifier with decrease of noise functions, by denoising device in conjunction with clarifier, which be can be only applied to
At the air outlet of fresh air system, the application site of the noise reduction means is by biggish limitation；The denoising device setting position and
The filtration of itself has an adverse effect to fresh air system air channel volume, hinders the flowing of air in air duct, is unfavorable for new
The normal work of wind system.
Utility model content
In view of the shortcomings of the prior art, the utility model provides one kind for carrying out active noise reduction simultaneously in fresh air channel
It will not interfere the active noise reducing device of fresh air system script performance.
To achieve the above object, it adopts the following technical scheme that
A kind of active noise reducing device for fresh air system, the fresh air system include fresh air channel, comprising:
Sensor on fresh air channel inner sidewall is set, for obtaining signal；
Emitter in fresh air channel is set, for emitting noise reduction sound wave；
Emitter mounting box on fresh air channel lateral wall is set；
Wherein, the position for being relatively close to noise source is arranged in relative to emitter for the sensor；The transmitting
Device is mounted in emitter mounting box.
Further, sensor uses microphone, for obtaining the noise signal of noise source sending.
Further, emitter uses loudspeaker, for emitting sound identical with noise signal opposite in phase, amplitude
Wave.
It further, further include central processing unit, for noise signal acquired in receiving sensor.
Further, the channel recess being recessed towards channel interior, the hair are provided on the fresh air channel side wall
Injection device mounting box is mounted on the inside of channel recess.
Further, emitter is mounted on the lateral wall of fresh air channel, and the signal emission port of emitter passes through new
Opening on the lateral wall in wind channel protrudes into the inside of fresh air channel.
Further, central processing unit is mounted in emitter mounting box.
Further, central processing unit is mounted on interior new blower or fresh air channel tube wall outside or indoor fresh air control device
It is interior.
Further, sensor and emitter are directly installed in fresh air channel.
Further, the shape, size and material of emitter mounting box are adjusted according to noise reduction needs.
The utility model has the advantages that
The noise control that fresh air system is carried out using the active noise reducing device of the utility model is the following noise reduction science and technology first
New trend, and active noise reduction can make up the deficiency of traditional noise reduction mode in low frequency part, while cooperate in medium-high frequency part
Passive noise reduction reaches more preferably noise reduction effect, reduces noise control engineering cost.
The active noise reducing device of the utility model is directly installed on the air duct of fresh air system, can be carried out to noise direct
The effect of noise reduction, noise reduction is directly efficient；The active noise reducing device of the utility model may be mounted at each of fresh air system air duct
Position, according to the position of the actual demand reasonable arrangement denoising device of noise reduction；Sense in the active noise reducing device of the utility model
Reception device is answered to be close to install on the inner sidewall of air duct, emitter is largely mounted on the lateral wall in air duct, and only emission port is arranged
On the inner sidewall in air duct, such installation will not interfere active noise reduction system to fresh air script performance (performances such as air quantity), together
When noise reduction effect it is best.
To sum up, the utility model can be effectively reduced fresh air Middle and low frequency noise and part high-frequency noise (the utility model
Pipeline form can accomplish reduce 2000hz or more high-frequency noise), can by adjusting the quantity of microphone and loudspeaker
Accomplish the high-frequency for reducing noise in 3000hz and 3000hz or more；Reduce the passive noise reduction means such as fresh air system sound-absorbing material
It uses, reduces engineering cost；It can need to be adjusted according to fresh air, universality is strong；Fresh air performance itself is not interfered, is secondly guaranteed
The air-tightness of pipeline prevents gas leak in pipe；Guarantee that the effect of active noise reduction system is optimal.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the active noise reducing device for fresh air system of the utility model；
Fig. 2 is the side schematic view of the active noise reducing device for fresh air system of the utility model；
In figure, 1 is fresh air channel, and 2 be sensor, and 3 be emitter, and 4 be emitter mounting box, and 5 emit for signal
Mouthful, 6 be channel recess.
Specific embodiment
To keep the purpose and technical solution of the utility model embodiment clearer, implement below in conjunction with the utility model
The attached drawing of example, is clearly and completely described the technical solution of the utility model embodiment.Obviously, described embodiment
It is a part of the embodiment of the utility model, instead of all the embodiments.Based on described the embodiments of the present invention,
Those of ordinary skill in the art's every other embodiment obtained under the premise of being not necessarily to creative work belongs to practical
Novel protected range.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
The meaning of " inside and outside " described in the utility model is referred to relative to equipment itself, inside sensing equipment
Direction be it is interior, otherwise is outer；Rather than the specific restriction to the equipment mechanism of the utility model.
The meaning of " connection " described in the utility model can be to be directly connected to be also possible between component between component
Pass through being indirectly connected with for other components.
As illustrated in fig. 1 and 2, the active noise reducing device for fresh air system of the utility model, fresh air system include fresh air
Channel 1, comprising:
Sensor 2 on 1 inner sidewall of fresh air channel is set, for obtaining signal；
Emitter 3 in fresh air channel 1 is set, for emitting noise reduction sound wave；
Emitter mounting box on fresh air channel lateral wall is set；
Wherein, the position for being relatively close to noise source is arranged in relative to emitter for the sensor；The transmitting
Device is mounted in emitter mounting box.
Sensor 2 uses microphone, for obtaining the noise signal of noise source sending.
Emitter 3 uses loudspeaker, for emitting sound wave identical with noise signal opposite in phase, amplitude.
Microphone, loudspeaker can adjust quantity or model according to actual needs, and other classes can also be added according to actual needs
Individual sensor
It further include central processing unit, for noise signal acquired in receiving sensor 2.
The channel recess 6 being recessed towards channel interior, the emitter peace are provided on the fresh air channel side wall
Mounted box is mounted on the inside of channel recess 6.The shape of the channel recess 6 can be right angle be also possible to it is streamlined
It can be form of arcs.
Emitter 3 is mounted on the lateral wall of fresh air channel 1, and the signal emission port 5 of emitter 3 passes through fresh air channel
Opening on 1 lateral wall protrudes into the inside of fresh air channel 1.As preferred embodiment, which is arranged in channel recess
In portion 6.
Central processing unit is mounted in emitter mounting box 4.Shape, size and the material root of emitter mounting box 4
It is adjusted according to noise reduction needs, so that the signal that emitter is issued reaches optimal noise reduction effect.
Sensor 2 and emitter 3 are directly installed in fresh air channel 1.
The tube can place new blower air-supply outlet, fresh air in system channel middle section noise reduction essential regions or room
System air inlet and air outlet.Be placed on channel emitter installation box shaped it is unlimited, can according to horn shape or be actually needed into
Row adjusts, and emitter mounting box is opening on the inside of pipe, and there are active noise reducing device routes in emitter installation box wall
The cavity of required size.Facilitate denoising device to be powered to transmit with data, next prevents fresh air air-flow from leaking, influences air outlet
Air quantity.Microphone or remaining sensor are fixed on the inner sidewall of air duct, specific location, can be adjusted according to actual product needs
It is whole.
Central processing unit can be placed on the outside of emitter mounting box or new blower or tube wall or indoor fresh air control
System.It can be adjusted as needed.The tube can connect new fan outlet, or as the connector of other pipelines,
Also air outlet or air inlet be can be used as.
The utility model listens to noise sound wave using microphone, identical, the phase that calculates wavelength, amplitude by central processing unit
Position is in 180 ° of opposite sound waves, and plays reversed noise reduction sound wave by power amplifier speaker unit, realizes noise reduction.
The above is only the embodiments of the present invention, and the description thereof is more specific and detailed, but can not therefore understand
For a limitation on the scope of the patent of the present invention.It should be pointed out that for those of ordinary skill in the art, not taking off
Under the premise of from the utility model design, various modifications and improvements can be made, these belong to the protection of the utility model
Range.
Claims (10)
1. a kind of active noise reducing device for fresh air system, the fresh air system includes fresh air channel (1), which is characterized in that
Include:
Sensor (2) on fresh air channel (1) inner sidewall is set, for obtaining signal；
The emitter (3) being arranged on fresh air channel (1), for emitting noise reduction sound wave；
Emitter mounting box (4) on fresh air channel (1) lateral wall is set；
Wherein, the position for being relatively close to noise source is arranged in relative to emitter (3) for the sensor (2)；The hair
Injection device (3) is mounted in emitter mounting box (4).
2. a kind of active noise reducing device for fresh air system according to claim 1, which is characterized in that the sensor
(2) microphone is used, for obtaining the noise signal of noise source sending.
3. a kind of active noise reducing device for fresh air system according to claim 1, which is characterized in that the transmitting dress
(3) are set using loudspeaker, for emitting sound wave identical with noise signal opposite in phase, amplitude.
4. a kind of active noise reducing device for fresh air system according to claim 1, which is characterized in that further include center
Processor, for noise signal acquired in receiving sensor (2).
5. a kind of active noise reducing device for fresh air system according to claim 1, which is characterized in that the fresh air is logical
The channel recess (6) being recessed towards channel interior is provided on road (1) side wall, the emitter mounting box (4) is mounted on
The inside of channel recess (6).
6. a kind of active noise reducing device for fresh air system according to claim 1, which is characterized in that the transmitting dress
It sets (3) to be mounted on the lateral wall of fresh air channel (1), the signal emission port of emitter (3) passes through the outside of fresh air channel (1)
Opening on wall protrudes into the inside of fresh air channel (1).
7. a kind of active noise reducing device for fresh air system according to claim 4, which is characterized in that the centre
Reason device is mounted in emitter mounting box (4).
8. a kind of active noise reducing device for fresh air system according to claim 4, which is characterized in that the centre
Reason device is mounted in new blower or on the outside of fresh air channel tube wall or in indoor fresh air control device.
9. a kind of active noise reducing device for fresh air system according to claim 1, which is characterized in that the sensor
(2) it is directly installed on fresh air channel (1) with emitter (3).
10. a kind of active noise reducing device for fresh air system according to claim 1, which is characterized in that the transmitting
Shape, size and the material of device mounting box (4) are adjusted according to noise reduction needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820956799.5U CN208487769U (en) | 2018-06-21 | 2018-06-21 | A kind of active noise reducing device for fresh air system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820956799.5U CN208487769U (en) | 2018-06-21 | 2018-06-21 | A kind of active noise reducing device for fresh air system |
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| Publication Number | Publication Date |
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| CN208487769U true CN208487769U (en) | 2019-02-12 |
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ID=65248396
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| CN201820956799.5U Active CN208487769U (en) | 2018-06-21 | 2018-06-21 | A kind of active noise reducing device for fresh air system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765619A (en) * | 2020-07-03 | 2020-10-13 | 深圳市旷世伟业工程有限公司 | Central air conditioner noise reduction structure and method thereof |
-
2018
- 2018-06-21 CN CN201820956799.5U patent/CN208487769U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765619A (en) * | 2020-07-03 | 2020-10-13 | 深圳市旷世伟业工程有限公司 | Central air conditioner noise reduction structure and method thereof |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201123 Address after: Room 109, 1 / F, building 5, No. 725, Jinsong District, Panjiayuan, Chaoyang District, Beijing 100021 Patentee after: BEIJING ANSHENG HAOLANG TECHNOLOGY Co.,Ltd. Address before: 501 (F-051) on the fifth floor of No. 14 Building, No. 7 Courtyard, Dijin Road, Haidian District, Beijing 100000 Patentee before: BEIJING ANSHENG ZHIYUAN TECHNOLOGY PARTNERSHIP (L.P.) |
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| TR01 | Transfer of patent right |