CN212566244U - Active noise reduction equipment installed on air outlet equipment - Google Patents
Active noise reduction equipment installed on air outlet equipment Download PDFInfo
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- CN212566244U CN212566244U CN202020600609.3U CN202020600609U CN212566244U CN 212566244 U CN212566244 U CN 212566244U CN 202020600609 U CN202020600609 U CN 202020600609U CN 212566244 U CN212566244 U CN 212566244U
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Abstract
The embodiment of the utility model provides a pair of install in initiative of air-out equipment and fall equipment of making an uproar, include: the device comprises a controller, a sound acquisition device and a loudspeaker; the loudspeaker is in communication connection with the controller, and the sound collection device is in communication connection with the controller; the sound collection device and the loudspeaker are sequentially installed along the air outlet direction of the air outlet equipment; the air outlet equipment is used for outputting air, and the sound collecting device is used for collecting sound waves in the environment near the air outlet of the air outlet equipment and sending the sound waves to the controller. Will the embodiment of the utility model provides an equipment fixing is in the air outlet department back of air-out equipment, can effectively reduce the noise of air-out equipment air outlet department, has reduced the damage to people's hearing, has improved people's comfort.
Description
Technical Field
The utility model relates to an equipment technical field of making an uproar especially relates to an install in equipment of making an uproar falls in initiative of air-out equipment.
Background
At present, when air outlet equipment (such as an air purifier, air conditioning equipment, a fresh air fan and the like) works, the noise at the air outlet is one of important indexes for evaluating the performance of the air outlet equipment in the industry. Along with the increasing living standard of people, the requirements on the performance of air outlet equipment are also increased year by year; not only will bigger air current flux, still stronger regulating power, consequently need air conditioning equipment increase power, when the power increase of air-out equipment, just can lead to the air-out noise increase of the air-out equipment that is in operating condition, it is especially obvious at air outlet department, influence user experience.
SUMMERY OF THE UTILITY MODEL
In order to solve prior art, powerful air-out equipment is in the course of the work, and the air outlet noise is big, influences user experience's technical problem. The embodiment of the utility model provides an install in the initiative of air-out equipment and fall equipment of making an uproar, concrete technical scheme is as follows:
the embodiment of the utility model provides an install in the initiative of air-out equipment and fall equipment of making an uproar, include: the device comprises a controller, a sound acquisition device and a loudspeaker;
the loudspeaker is in communication connection with the controller, and the sound collection device is in communication connection with the controller; the sound collection device and the loudspeaker are sequentially installed along the air outlet direction of the air outlet equipment;
the air-out equipment is used for outputting air, sound collection system is used for gathering the sound wave in the environment near the air outlet of air-out equipment, and will the sound wave send to the controller, the controller basis the target sound wave is confirmed to the sound wave, controller control the speaker is pressed the sound production of target sound wave, wherein, the target sound wave is: and the intensity of the sound wave obtained after superposition with the sound wave is less than the preset intensity of the sound wave.
Optionally, the wind-out device further comprises a housing, an air inlet butted with the air outlet of the wind-out device is formed in a first surface of the housing, an air outlet is formed in a second surface of the housing, the sound collection device and the loudspeaker are arranged in the housing, and the sound collection device is located between the air inlet and the loudspeaker in the housing.
Optionally, the air conditioner further comprises an air outlet grille, the air outlet grille is installed at the air outlet, and the external dimension of the air outlet grille is matched with the external dimension of the air outlet; the first surface and the second surface are two opposite surfaces of the shell.
Optionally, still include sound feedback device, sound feedback device sets up the shell is installed on the face of air exit, controller communication connection sound feedback device, sound feedback device is used for gathering the feedback sound wave in the environment that the air exit goes out, and will the feedback sound wave send to the controller, the controller basis the adjustment of feedback sound wave the intensity of target sound wave, so that when the speaker carries out the vocal according to the target sound wave after the adjustment, the intensity of the feedback sound wave that obtains is less than predetermine intensity.
Optionally, the loudspeaker enclosure is further included, the loudspeaker is penetratingly mounted on any side wall of the loudspeaker enclosure, and an opening of the loudspeaker faces the outer side of the loudspeaker enclosure.
Optionally, the speaker housing is fixed to an inner side wall of the housing, and a surface of the speaker housing connected to the housing is any surface of the speaker housing where the speaker is not installed.
Optionally, the structure of the speaker housing is a hollow cylindrical structure or a hollow quadrangular prism structure, when the structure of the speaker housing is the hollow cylindrical structure, the height of the speaker housing is H (mm) (0 < H ≦ 100), and the cross-sectional diameter of the speaker housing is aH (0 < a ≦ 100);
when the structure of the loudspeaker shell is a hollow quadrangular prism structure, the height of the loudspeaker shell is H (mm), wherein H is more than 0 and less than or equal to 100, and the length and the width of the cross section of the loudspeaker shell are respectively aH (a is more than 0 and less than or equal to 100) and bH (b is more than 0 and less than or equal to 100).
Optionally, the sound collection device includes multiple microphones, and each of the microphones is respectively in communication connection with the controller;
the controller is used for acquiring each sound wave collected by each microphone and determining a target sound wave according to each sound wave.
Optionally, the controller is specifically configured to: calculating the average value of each environment sound wave, and determining a target sound wave according to the average value, wherein the target sound wave is as follows: and the intensity of the sound wave obtained after the sound waves corresponding to the average value are superposed is smaller than that of the sound wave with the preset intensity.
Optionally, a plurality of the speakers are included, and each of the speakers is communicatively connected to the controller.
The embodiment of the utility model provides a pair of install in initiative of air-out equipment and fall equipment of making an uproar, include: the device comprises a controller, a sound acquisition device and a loudspeaker; the loudspeaker is in communication connection with the controller, and the sound collection device is in communication connection with the controller; the sound collection device and the loudspeaker are sequentially installed along the air outlet direction of the air outlet equipment; the air-out equipment is used for outputting air, sound collection system is used for gathering the sound wave in the environment near the air outlet of air-out equipment, and will the sound wave send to the controller, the controller basis the target sound wave is confirmed to the sound wave, controller control the speaker is pressed the sound production of target sound wave, wherein, the target sound wave is: and the intensity of the sound wave obtained after superposition with the sound wave is less than the preset intensity of the sound wave.
The active noise reduction device installed on the air outlet device provided by the embodiment of the utility model can be installed at the air outlet of any device through outputting wind power, such as an air outlet of an air conditioner, an air outlet of a central air conditioner, an air outlet of an air purifier, an air outlet of a fresh air system, etc., a sound collection device is arranged at the air outlet of any air outlet device, the sound collection device is used for collecting sound waves in the environment at the air outlet of the air outlet device and sending the sound waves to a controller, the controller analyzes the sound waves to obtain target sound waves, wherein the target sound waves are the sound waves with the intensity smaller than the preset intensity obtained by superposing the sound waves in the environment at the air outlet of the air outlet device, and then the controller controls the loudspeaker to send the target sound waves, namely, the loudspeaker can neutralize the sound waves in the environment at the air outlet of the air outlet device after sending the, make the output wind process of air-out equipment the embodiment of the utility model provides an after the initiative noise reduction equipment that falls, its intensity reduces to predetermineeing below the intensity. Therefore, the sound wave sensed by the region where the ears are located is the sound wave with lower intensity, the hearing damage of the user is reduced, the comfort of the user is improved, and the user experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the embodiment of the utility model provides a install in the active noise reduction equipment's of air-out equipment structure sketch map that provides.
Fig. 2 is another schematic structural diagram of an active noise reduction device installed on an air outlet device provided in the embodiment of the present invention.
Fig. 3 is a module connection diagram according to an embodiment of the present invention.
Reference numerals:
the device comprises a controller 1, a sound acquisition device 2, a loudspeaker 3, a sound feedback device 4, a shell 5, an air inlet 6, an air outlet 7, a loudspeaker shell 8 and an air outlet grille 9.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The patent provides a plurality of parallel schemes, and different expressions belong to an improved scheme based on a basic scheme or a parallel scheme. Each solution has its own unique features.
Example 1
Please refer to fig. 1, fig. 2, and fig. 3, an embodiment of the present invention provides an active noise reduction device installed on an air outlet device, including: controller 1, sound collection system 2, speaker 3.
The loudspeaker 3 is in communication connection with the controller 1, and the sound collection device 2 is in communication connection with the controller 1; the sound collection device 2 and the loudspeaker 3 are sequentially installed along the air outlet direction of the air outlet equipment.
Air-out equipment is used for outputting the air, sound collection system 2 is used for gathering the sound wave in the environment near air outlet of air-out equipment, and will the sound wave send to controller 1, controller 1 basis the target sound wave is confirmed to the sound wave, controller 1 control speaker 3 is pressed the sound production of target sound wave, wherein, the target sound wave is: and the intensity of the sound wave obtained after superposition with the sound wave is less than the preset intensity of the sound wave.
Specifically, the sound collection device 2 may be a microphone, or may be another device for collecting sound.
The above-mentioned equipment of making an uproar falls in initiative of installing in air-out equipment can include a sound collection system 2, also can include two at least sound collection systems 2, can include a speaker 3, also can include two at least speakers 3, the embodiment of the utility model provides a specifically limited speaker 3 and sound collection system 2's quantity not. When the number of the sound collection devices 2 is larger, the range of the collected environmental sound waves is larger, so that the target sound waves determined by the controller 1 are more accurate, and after the sound waves emitted by the loudspeaker 3 are superposed with the sound waves in the environment near the air outlet of the air outlet device, the obtained sound waves have smaller intensity, and the sound waves felt by a user are smaller. When the number of the loudspeakers 3 is larger, the sound wave intensity of wind passing through the active noise reduction device in all directions can be uniformly reduced, and further, noise felt by a user is reduced, so that the user experience is improved.
Loudspeaker 3 can directly be installed in air outlet equipment air outlet department, also can install on the inside wall of the air outlet of air outlet equipment, can also install in the air outlet outside of air outlet equipment through support piece, and loudspeaker 3's position is close to the air outlet more, and noise reduction is better. In the embodiment of the present invention, the kind and model of the speaker 3 are not specifically limited, and the speaker 3 may be an independent speaker 3 or a speaker 3 with an acoustic cavity.
The controller 1 may be installed at any position of the air outlet device, or may be installed at a place other than the air outlet device by a support member, as a preferred embodiment, the controller 1 may be installed at a position that does not affect the air outlet of the air outlet device, and when the controller 1 may be installed on the air outlet device, the controller may be embedded in the air conditioning device, for example, in the controller 1 of the fresh air machine, or may be externally installed on the air conditioning device; the power supply mode of above-mentioned controller 1 can be by air conditioning equipment's mains operated, also can be by built-in lithium electricity self-power supply, also perhaps be the power supply of solar module, the embodiment of the utility model provides a do not specifically inject the power supply mode of above-mentioned controller 1.
The sound collection device 2 and the loudspeaker 3 are sequentially arranged along the air outlet direction of the air outlet equipment, and it needs to be explained that the sound collection device 2 needs to collect the noise at the air outlet of the air outlet equipment firstly, and the sound wave is emitted by the loudspeaker 3 to offset the noise at the air outlet.
The sound collection device 2 may be connected to the controller 1 through a wireless signal or through a communication line, the controller 1 may be connected to the speaker 3 through a wireless signal or through a communication line, and the sound collection device 2 may be connected to the controller 1, the controller 1 and the speaker 3 through a wireless signal in order to reduce the complexity of the device.
The controller 1 may be a microprocessor or other device having a control function. The controller 1 may be commercially available, or the controller 1 may be obtained by writing a program corresponding to the procedure executed by the controller 1 into a microcomputer in which a control program is not programmed. When the controller 1 is obtained by writing a program corresponding to the step executed by the controller 1, the controller 1 can be more suitable for active noise reduction equipment, so that the control effect of the controller 1 is better, and the noise intensity heard by people can be more flexibly controlled.
It should be noted that, the controller 1 determines the target sound wave through the sound wave collected by the sound collection device 2, and controls the speaker 3 to generate sound according to the target sound wave, so as to offset the air outlet noise of the air outlet device, and the control process can be implemented according to the following steps:
step 1: converting sound waves collected by the sound collection device 2 into analog noise signals through a microphone, and converting the analog noise signals into digital noise signals through an analog-to-digital conversion module;
step 2: the digital noise signal is processed by an adaptive filter module to generate a secondary digital sound source signal;
and step 3: the secondary digital sound source signal generates a secondary amplified digital sound source signal through a signal gain module;
and 4, step 4: and converting the secondary amplified digital sound source signal into a secondary amplified analog sound source signal through a digital-to-analog conversion module, obtaining a sound wave signal with the phase opposite to that of the secondary amplified analog sound source signal, and taking the sound wave signal as a target sound wave.
Alternatively, a person skilled in the art may acquire a plurality of sound waves by using the sound acquisition device 2 through a single variable control method, obtain a target sound wave intensity that can cancel the noise at the air outlet of the air outlet device by using a single sound wave as a fixed variable until a target sound wave intensity corresponding to each sound wave among the plurality of sound waves is obtained, establish a data model between the sound wave intensity and the target sound wave intensity, and write the data model into the controller 1 to implement the above control process. In the testing process, along the air-out direction of air-out equipment, can set up second group sound collection system 2 behind speaker 3, the noise intensity of gathering through second group sound collection system 2, as the sound wave that judges speaker 3 and send according to the target sound wave offsets the effect of the sound wave that sound collection system 2 gathered. Again the embodiment of the utility model provides an in, predetermine intensity and be 44 decibels, the human being is less than in the environment of 44 decibels, experiences well, certainly, predetermine intensity can be the arbitrary value below the 44 decibels, it needs to explain, the embodiment of the utility model provides a it is the realization principle of equipment of making an uproar and should making an uproar to fall to protect, theoretically, predetermine intensity and all can realize for the arbitrary value the utility model discloses according to the scheme of target intensity noise control, only in actual conditions, be less than 44 decibels, the human being has the experience of preferred.
The active noise reduction device installed on the air outlet device provided by the embodiment of the present invention can be installed at the air outlet of any device through outputting wind power, such as air outlet of air conditioner, air outlet of central air conditioner, air outlet of air purifier, air outlet of fresh air system, etc., the sound collection device 2 is installed at the air outlet of any air outlet device, the sound collection device 2 is used for collecting the sound wave in the environment of the air outlet device 7 and sending the sound wave to the controller 1, the controller 1 analyzes the sound wave to obtain the target sound wave, wherein the target sound wave is the sound wave which is obtained by superposing the sound wave in the environment of the air outlet device 7 and has the intensity smaller than the preset intensity, and then the controller 1 controls the speaker 3 to send the target sound wave, that is, after the speaker 3 sends the target sound wave, the target sound wave can be neutralized with the sound wave in the environment of the air outlet device 7, make the output wind process of air-out equipment the embodiment of the utility model provides an after the initiative noise reduction equipment that falls, its intensity reduces to predetermineeing below the intensity. Therefore, the sound wave felt by the region where the ears are located is the sound wave with smaller intensity, the damage to the hearing of the user is reduced, the comfort of the user is improved, and the user experience is further improved.
Example 2
On the basis of the embodiment 1, the embodiment of the present invention further optimizes the scheme of the embodiment 1. The method comprises the following specific steps:
in one embodiment, please refer to fig. 1 and fig. 2. The equipment further comprises a shell 5, wherein an air inlet 6 butted with an air outlet of the air outlet equipment is formed in a first surface of the shell 5, an air outlet 7 is formed in a second surface of the shell 5, the sound collection device 2 and the loudspeaker 3 are arranged in the shell 5, and the sound collection is positioned in the shell 5 between the air inlet 6 and the loudspeaker 3 in the shell 5.
Specifically, shell 5 can be the joint with the connected mode of air-out equipment, also can be bolted connection, can also be the welding, can also be through support piece with shell 5 support in the air outlet department of air-out equipment, the embodiment of the utility model provides a do not specifically prescribe a limit to the relation of connection between shell 5 and the air-out equipment, as preferred implementation, in the connection process, the size of the air intake 6 of shell 5 and the size adaptation of the air outlet of air-out equipment to guarantee that the wind of air-out equipment output most gets into in shell 5, after the equipment of making an uproar falls via the initiative and fall the processing of making an uproar, export the wind of low noise, in order to improve the effect that the equipment of making an uproar falls to.
In one embodiment, the air conditioner further comprises an air outlet grille 9, wherein the air outlet grille 9 is installed at the air outlet 7, and the external dimension of the air outlet grille 9 is matched with the external dimension of the air outlet 7; the first surface and the second surface are two surfaces opposite to the housing 5.
Specifically, air-out grid 9 can directly purchase and obtain, installs air-out grid 9 on above-mentioned first face, also can set up a plurality of through holes on the first face of shell 5, and air-out grid 9 is accomplished in the preparation. In a preferred embodiment, the first surface and the second surface face each other, so that the air permeability inside the casing 5 is improved, and the influence of the casing 5 on the air volume of the air outlet device is reduced.
In an embodiment, still include sound feedback device 4, sound feedback device 4 sets up shell 5 is installed on the face of air exit 7, controller 1 communication connection sound feedback device 4, sound feedback device 4 is used for gathering feedback sound wave in the environment that the air exit 7 goes out, and will feedback sound wave send to controller 1, controller 1 basis feedback sound wave adjustment the intensity of target sound wave, so that when speaker 3 carries out the vocal according to the target sound wave after the adjustment, the intensity of the feedback sound wave that obtains is less than predetermine intensity.
Specifically, the above-mentioned equipment of making an uproar falls in initiative of air-out equipment can include an acoustic feedback device 4, also can include two at least acoustic feedback devices 4, the embodiment of the utility model provides a do not specifically inject the quantity of acoustic feedback device 4. When the number of the sound feedback devices 4 is larger, the range of the collected environmental sound waves is larger, so that the target sound waves determined by the controller 1 are more accurate, and after the sound waves emitted by the loudspeaker 3 are superposed with the sound waves in the environment near the air outlet of the air outlet equipment, the obtained sound waves have smaller intensity, and the sound waves felt by a user are smaller. The noise felt by the user is further reduced, and the user experience is improved.
In one embodiment, the loudspeaker device further comprises a loudspeaker housing 8, wherein the loudspeaker 3 is penetratingly mounted on any side wall of the loudspeaker housing 8, and the opening of the loudspeaker 3 faces the outer side of the loudspeaker housing 8.
In one embodiment, the speaker housing 8 is fixed to the inner side wall of the housing 5, and the surface of the speaker housing 8 connected to the housing 5 is the surface of the speaker housing 8 where the speaker 3 is not installed.
In one embodiment, the structure of the speaker housing 8 is a hollow cylindrical structure or a hollow quadrangular prism structure, when the structure of the speaker housing 8 is a hollow cylindrical structure, the height of the speaker housing 8 is H (mm) (0 < H ≦ 100), and the cross-sectional diameter of the speaker housing 8 is aH (0 < a ≦ 100).
When the structure of the loudspeaker shell 8 is a hollow quadrangular prism structure, the height of the loudspeaker shell 8 is H (mm), wherein H is more than 0 and less than or equal to 100, and the length and the width of the cross section of the loudspeaker shell 8 are respectively aH (more than 0 and less than or equal to 100 a) and bH (more than 0 and less than or equal to 100 b).
In a preferred embodiment, the height of the speaker housing 8 is H, the length, width and height of the speaker housing 8 are 86.4H, 56.3H and 140.7H, respectively, and the height of the front extension of the acoustic cavity is 27.5H. The size of the acoustic cavity is set, so that the optimal noise reduction effect in the cavity can be ensured on the basis of ensuring that the cavity does not occupy too large space.
In one embodiment, the sound collection device 2 includes multiple microphones, and each of the microphones is communicatively connected to the controller 1; the controller 1 is configured to acquire each sound wave collected by each microphone, and determine a target sound wave according to each sound wave.
In one embodiment, the controller 1 is specifically configured to: calculating the average value of each environment sound wave, and determining a target sound wave according to the average value, wherein the target sound wave is as follows: and the intensity of the sound wave obtained after the sound waves corresponding to the average value are superposed is smaller than that of the sound wave with the preset intensity.
In one embodiment, a plurality of the speakers 3 are included, and each of the speakers 3 is communicatively connected to the controller 1.
Please refer to fig. 2. The controller 1, the sound collection device 2, the loudspeaker 3 and the sound feedback device 4 are in position relation, and the controller 1 is only required to be arranged at the air outlet position which does not influence the air outlet equipment; the sound collection device 2, the loudspeaker 3 and the sound feedback device 4 are arranged along the air outlet direction of the air outlet equipment, and when the air outlet direction is seen, the sound collection device 2, the loudspeaker 3 and the sound feedback device 4 are firstly contacted with air blown out by the air conditioning equipment, and finally the sound feedback device 4 is arranged; among the three, the loudspeaker 3 is the device which most easily influences the air output, and needs to be placed as far as possible according to actual conditions without influencing the air output, and the shell 5 needs to meet the fluid mechanics design, has the volume as small as possible, and is installed as close to the side as possible.
The embodiment of the utility model provides a pair of install in initiative of air-out equipment and fall equipment of making an uproar, include: the device comprises a controller 1, a sound acquisition device 2 and a loudspeaker 3; the loudspeaker 3 is in communication connection with the controller 1, and the sound collection device 2 is in communication connection with the controller 1; the sound collection device 2 and the loudspeaker 3 are sequentially installed along the air outlet direction of the air outlet equipment; air-out equipment is used for outputting the air, sound collection system 2 is used for gathering the sound wave in the environment near air outlet of air-out equipment, and will the sound wave send to controller 1, controller 1 basis the target sound wave is confirmed to the sound wave, controller 1 control speaker 3 is pressed the sound production of target sound wave, wherein, the target sound wave is: and the intensity of the sound wave obtained after superposition with the sound wave is less than the preset intensity of the sound wave.
The active noise reduction device installed on the air outlet device provided by the embodiment of the present invention can be installed at the air outlet of any device through outputting wind power, such as air outlet of air conditioner, air outlet of central air conditioner, air outlet of air purifier, air outlet of fresh air system, etc., the sound collection device 2 is installed at the air outlet of any air outlet device, the sound collection device 2 is used for collecting the sound wave in the environment of the air outlet device 7 and sending the sound wave to the controller 1, the controller 1 analyzes the sound wave to obtain the target sound wave, wherein the target sound wave is the sound wave which is obtained by superposing the sound wave in the environment of the air outlet device 7 and has the intensity smaller than the preset intensity, and then the controller 1 controls the speaker 3 to send the target sound wave, that is, after the speaker 3 sends the target sound wave, the target sound wave can be neutralized with the sound wave in the environment of the air outlet device 7, make the output wind process of air-out equipment the embodiment of the utility model provides an after the initiative noise reduction equipment that falls, its intensity reduces to predetermineeing below the intensity. Therefore, the sound wave felt by the region where the ears are located is the sound wave with smaller intensity, the damage to the hearing of the user is reduced, the comfort of the user is improved, and the user experience is further improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides an install in initiative of air-out equipment and fall equipment of making an uproar which characterized in that includes: the device comprises a controller, a sound acquisition device and a loudspeaker; the sound collection device comprises a plurality of microphones, and each microphone is in communication connection with the controller;
the loudspeaker is in communication connection with the controller, and the sound collection device is in communication connection with the controller; the sound collection device and the loudspeaker are sequentially installed along the air outlet direction of the air outlet equipment;
the air outlet equipment is used for outputting air, and the sound collecting device is used for collecting sound waves in the environment near the air outlet of the air outlet equipment and sending the sound waves to the controller.
2. The active noise reduction device installed on an air outlet device of claim 1, further comprising a housing, wherein an air inlet butted with the air outlet of the air outlet device is formed in a first surface of the housing, an air outlet is formed in a second surface of the housing, the sound collection device and the speaker are both disposed in the housing, and the sound collection device is disposed in the housing and located between the air inlet and the speaker in the housing.
3. The active noise reduction device installed on an air outlet device according to claim 2, further comprising an air outlet grille installed at the air outlet, wherein the outer dimension of the air outlet grille is matched with the outer dimension of the air outlet; the first surface and the second surface are two opposite surfaces of the shell.
4. The active noise reduction device installed on an air outlet device according to claim 2, further comprising an acoustic feedback device, wherein the acoustic feedback device is disposed on a surface of the housing where the air outlet is installed, the controller is in communication connection with the acoustic feedback device, and the acoustic feedback device is configured to collect feedback sound waves in an environment where the air outlet is located, and send the feedback sound waves to the controller.
5. The active noise reduction device installed on a wind outlet device of claim 2, further comprising a speaker enclosure, wherein the speaker is installed through any side wall of the speaker enclosure, and the opening of the speaker faces the outside of the speaker enclosure.
6. The active noise reduction device installed on an air outlet device of claim 5, wherein the speaker housing is fixed on an inner side wall of the housing, and a surface of the speaker housing connected to the housing is any surface of the speaker housing where the speaker is not installed.
7. The active noise reduction device installed on a wind outlet device of claim 5, wherein the structure of the speaker housing is a hollow cylindrical structure or a hollow quadrangular prism structure, when the structure of the speaker housing is a hollow cylindrical structure, the height of the speaker housing is H (mm) (0 < H ≦ 100), and the cross-sectional diameter of the speaker housing is aH (0 < a ≦ 100);
when the structure of the loudspeaker shell is a hollow quadrangular prism structure, the height of the loudspeaker shell is H (mm), wherein H is more than 0 and less than or equal to 100, and the length and the width of the cross section of the loudspeaker shell are respectively aH (a is more than 0 and less than or equal to 100) and bH (b is more than 0 and less than or equal to 100).
8. The active noise reduction device mounted on an air outlet device of claim 1, comprising a plurality of speakers, wherein each speaker is communicatively connected to the controller.
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| CN202020600609.3U CN212566244U (en) | 2020-04-21 | 2020-04-21 | Active noise reduction equipment installed on air outlet equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150596A (en) * | 2021-12-17 | 2022-03-08 | 鲲腾技术有限公司 | Noise reduction barrier, noise reduction method, device and system and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114150596A (en) * | 2021-12-17 | 2022-03-08 | 鲲腾技术有限公司 | Noise reduction barrier, noise reduction method, device and system and storage medium |
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