CN210532658U - Active noise reduction device - Google Patents
Active noise reduction device Download PDFInfo
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- CN210532658U CN210532658U CN201921503944.5U CN201921503944U CN210532658U CN 210532658 U CN210532658 U CN 210532658U CN 201921503944 U CN201921503944 U CN 201921503944U CN 210532658 U CN210532658 U CN 210532658U
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- active noise
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Abstract
An active noise reduction device is characterized in that an integrated beam is arranged in a device shell, two ends of the integrated beam are arranged on the inner side wall of the device shell, and an input device and an output device for active noise reduction are arranged on the integrated beam. The utility model discloses in will initiatively fall the centralized setting of input device and the output device of making an uproar and set up on same one line through integrated roof beam, can reduce sheltering from to the air-out area. The integrated beam can be used for wiring, so that messy wiring can be avoided under the condition that the air outlet area cannot be reduced, and new noise generated by messy wiring under the action of air flow is avoided.
Description
Technical Field
The utility model relates to a noise control field especially relates to a device of making an uproar falls in initiative.
Background
The noise of the air outlet and the air inlet of the air conditioner in families and hotels is always concerned, and especially for people with sleep disorder or shallow sleep, the noise is easier to be perceived.
For the noise problem of the air outlet and the air inlet of a central air conditioner, an air duct machine or an indoor heating and ventilation system, the active noise reduction technology is adopted in the current effective solution.
The active noise reduction devices for the air inlet and the air outlet, which have been disclosed nowadays, basically attach the collection device and the secondary source device to the sidewall of the air inlet. Generally, the speaker of the active noise reduction device needs to have a thick sound cavity and be attached to the sidewall of the air outlet or the sidewall of the external device, because the speaker of the active noise reduction device needs to meet the requirements of power, fluid mechanics, vibration and the like. The microphone also needs to be arranged on the side wall of the external device or the inner side of the air opening. This to a certain extent squeezes up the area of the air outlet.
Each of the above hardware also needs to be connected to a central processor or air conditioner controller. The existing method is to directly route the wires along the side wall of the external device in a shortest distance mode. However, this is not aesthetically pleasing and is not conducive to mass production or safe acceptance.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects existing in the prior art, the utility model aims to provide an active noise reduction device. The noise problem of air outlet, air intake can be solved through the technique of making an uproar of falling voluntarily in this application.
In order to achieve the above object, the utility model provides a pair of active noise reduction device, it includes: a device housing; the two ends of the integrated beam are arranged on the inner side wall of the device shell; input means for acquiring noise; the output device is used for sending out a noise reduction signal; the input device and the output device are both arranged on the integrated beam.
Optionally, in the above active noise reduction device, the input device is located in front of the output device along the airflow direction.
Optionally, the active noise reduction device further includes an input device bracket, and the input device is connected to the integration beam through the input device bracket.
Optionally, the active noise reduction device further includes an output device bracket, and the output device is connected to the integrated beam through the output device bracket.
Optionally, in the active noise reduction device, the output device further includes an output device sound cavity, and the output device sound cavity just contains the air duct area occupied by the input device in the air duct.
Optionally, in the active noise reduction device, the output device bracket and the integrated beam are integrated into a whole, or are separated; the sound cavity of the output device and the integrated beam are integrated or split.
Optionally, in the active noise reduction device, an installation groove is formed in the integrated beam, and is used for accommodating a line of the active noise reduction device.
Optionally, the active noise reduction device further includes a sound absorbing material disposed on an inner sidewall of the device housing.
Optionally, the active noise reduction device further includes a central control unit, which is mounted on the device housing or the integrated beam.
Optionally, in the active noise reduction device, a protrusion is disposed in the middle of the device housing, and a sound absorbing material is filled inside the protrusion.
Compared with the prior art, the utility model has the following technical effects:
1. the utility model discloses a device of making an uproar falls in the initiative, it is provided with integrated roof beam in the device shell, and the both ends setting of integrated roof beam is on the inside wall of device shell, and set up input device and the output device who is used for making an uproar falls in the initiative on the integrated roof beam, and the shared air inlet of output device or air-out area just overlap with the area that input device occupied like this, can reduce sheltering from of this device to air inlet or air-out area.
2. Further, the utility model discloses in will initiatively fall the input device and the centralized setting of output device that make an uproar on the integrated roof beam of a straight line through integrated roof beam, can reduce input, output device's the air-out area that occupies. And moreover, the integrated beam structure can be used for wiring, the messy wiring is avoided under the condition that the air outlet area is not reduced, and new noise generated by the messy wiring under the action of airflow is avoided.
3. The integrated beam can be further arranged in the middle of the shell, so that noise reduction waves output by the output device can be fully mixed and interfered with noise sound waves after the integrated beam is arranged, and the noise reduction effect is further improved.
4. In addition, still further set up passive sound absorbing material at the inside wall of device shell in this application, further promote the noise reduction effect. Wherein, the middle part of the outer casing can be provided with a bulge, and the passive sound absorption material is filled inside the bulge. Therefore, the problem that the sound absorption material is directly attached to the inner wall to occupy the air outlet area in the prior art can be avoided, and the air loss is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention for the purpose of explanation and not limitation of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of an active noise reduction device according to the present invention;
fig. 2 is a schematic view of the active noise reduction device of the present invention disposed at the air outlet;
fig. 3 is a schematic view of the active noise reduction device of the present invention disposed at the air inlet;
fig. 4 is a perspective view of an implementation of the active noise reduction apparatus of the present invention;
fig. 5 is a perspective view of another implementation manner of the active noise reduction device of the present invention.
In the figure, 1 denotes a device case, 11 denotes a boss, 2 denotes an integration beam, 3 denotes an input device, 31 denotes an input device holder, 4 denotes an output device, 41 denotes an output device holder, and 42 denotes an output device sound cavity.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
The meaning of "inside and outside" in the present invention means that the direction pointing to the inside of the housing is inside, otherwise outside, relative to the housing of the active noise reduction device itself; and not to the specific limitations of the device mechanism of the present invention.
The term "connected" as used herein may mean either a direct connection between elements or an indirect connection between elements through other elements.
The utility model provides a device of making an uproar falls in initiative, the direct embedded air outlet in tuber pipe machine, central air conditioning, the especially centralized new trend system of the mode that its accessible fig. 2 is shown, perhaps through the embedded air intake in systems such as tuber pipe machine, central air conditioning, new trend shown in fig. 3. Referring to fig. 1, the active noise reduction apparatus includes:
a device housing 1;
the two ends of the integrated beam 2 are arranged on the inner side wall of the device shell 1;
an input device 3 for acquiring noise;
an output device 4 for emitting a noise reduction signal;
the input device 3 and the output device 4 are both arranged on the integration beam 2. The central control unit is connected with the central control unit, and the central control unit drives the output device to send out a corresponding noise reduction signal according to the noise signal obtained by the input device so as to realize active noise reduction.
The input device is also connected with an input device bracket 31, and the output device is also connected with an output device bracket 41 and an output device sound cavity 42. The integration beam 2 can be used to centrally arrange the output device sound cavity 42, the input device support 31, the output device 4, the input device 3, and the output device support 41.
In a preferred embodiment, the input device 3 is arranged in front of the output device 4 in the direction of the air flow. The input device 3 is connected to the integration beam 2 via the input device bracket 31, while the output device 4 is similarly connectable to the other side of the integration beam 2 in the air flow direction via the output device bracket 41.
The input device can be a microphone and a vibration acquisition device generally, and noise sound waves or noise sound fields are acquired. The output device can be generally selected to be a loudspeaker or other forms of output for realizing noise reduction sound waves. The output device, typically a loudspeaker or the like, is also provided with an output device sound cavity 42. The output device bracket 41 can be integrated with the integrated beam 2 or separated from the integrated beam, and the output device sound cavity 42 can also be integrated with the integrated beam 2 or separated from the integrated beam. In order to reduce the occupation of the air duct area, the output device sound cavity 42 is arranged in the air duct of the air outlet or the air inlet of the air duct machine, the central air conditioner, the fresh air system and the like, and is just set to contain the air duct area occupied by the input device 3. In order to further reduce the occupation of the air duct area, reduce the influence on the air outlet or the air inlet and reduce the structural vibration caused by blocking the air flow, the connecting line between the input device 3 and the output device 4 can be completely and intensively fixed on the integrated beam 2, thereby reducing the wiring complexity.
Furthermore, still can further be provided with the mounting groove on above-mentioned integrated beam 2 for hold the circuit of initiative noise reduction device, with the whole embedded in integrated beam 2 supports of walking of each circular telegram device, reduce each circular telegram device and the area that exposes of line in the wind channel, reduce the risk that the vibration produced.
In another implementation manner, the active noise reduction device further includes a sound absorption material, and the sound absorption material may be disposed on an inner side wall of the device housing 1 to further achieve passive noise reduction, so as to further improve noise reduction effect. In particular, referring to fig. 5, a protrusion 11 may be further disposed in the middle of the device housing 1, and the sound-absorbing material is filled inside the protrusion 11, so as to avoid the sound-absorbing material occupying the ventilation area of the air duct and reduce the air volume loss.
In the mode of fig. 5, the protrusions are parallel to the integrated beam 2, while in other implementations, the protrusions 11 are perpendicular to or at an angle to the integrated beam 2 without affecting the sound absorption effect of the sound absorption material therein.
In the above active noise reduction device, the number of the input devices 3 and the output devices 4 is not limited, and the vertical position of the integration beam 2 should not be limited as well. Preferably, the integration beam 2 may be disposed at a central position or on a central axis of the device housing 1, so that the noise reduction sound waves output by the output device 4 can be sufficiently mixed and interfered with the noise sound waves in the device air duct, so as to further improve the noise reduction effect.
The device housing 1 or duct structure of the device described above should not be limited to a rectangular structure like that shown in fig. 4. It can be adjusted according to the shape of air outlet comparatively freely.
In the above apparatus, a separate central control unit may be provided. The central control unit is independently connected with electricity to control the switch of the central control unit, so that the synthesis and control of noise reduction sound waves are realized. In other implementation manners, the central control unit of the active noise reduction device may also be integrated with the control unit of the noise-reduced device, so as to perform power connection and switch control. The central control unit may be mounted on the device housing 1 or the integration beam 2.
The utility model has the advantages that:
through integrated roof beam 2 with input device 3 and output device 4 set up in concentrated, make it be in same straight line, overlap the shared passage area of both, reduce sheltering from the air-out area, and make the wiring that will connect input device 3 and output device 4 can follow the recess of integrated roof beam 2 and arrange in proper order, can not additionally occupy the air-out area, can avoid the air-out area to be crowded by equipment and occupy, and can not produce new noise under the effect of air current because of walking in disorder of line. The invention can simultaneously reduce the noise of the air outlet and the air inlet of the air duct machine, the central air conditioner, the fresh air system and the like, ensure that the noise is reduced, simultaneously do not lose the air quantity, do not extrude the air outlet area, have simple and feasible centralized wiring mode, are beneficial to mass production standardization, are suitable for mass production, and can solve the standard inspection problem of the mass production.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An active noise reduction device, comprising:
a device housing (1);
the two ends of the integrated beam (2) are arranged on the inner side wall of the device shell (1);
input means (3) for acquiring noise;
an output device (4) for emitting a noise reduction signal;
the input device (3) and the output device (4) are both arranged on the integrated beam (2).
2. Active noise reduction device according to claim 1, characterized in that the input device (3) is located in front of the output device (4) in the direction of the air flow.
3. An active noise reduction device according to claim 1, characterized by an input device carrier (31), the input device (3) being connected to the integration beam (2) via the input device carrier (31).
4. An active noise reduction device according to claim 1, characterized by an output device support (41), the output device (4) being connected to the integration beam (2) through the output device support (41).
5. An active noise reduction device according to claim 4, characterized in that the output device (4) further comprises an output device sound cavity (42), the output device sound cavity (42) just contains the air channel area occupied by the input device (3) in the air channel.
6. Active noise reduction device according to claim 5, characterized in that the output device support (41) is integral with the integration beam (2), or split; the output device sound cavity (42) and the integrated beam (2) are integrated or split.
7. Active noise reduction device according to claim 1, characterized in that the integration beam (2) is provided with mounting slots for accommodating the wiring of the active noise reduction device.
8. An active noise reduction device according to claim 1, characterized by further comprising sound absorbing material arranged on the inner side walls of the device housing (1).
9. An active noise reduction device according to claim 1, characterized by further comprising a central control unit mounted on the device housing (1) or the integration beam (2).
10. Active noise reduction device according to claim 1, characterized in that the device housing (1) is provided with a bulge (11) in the middle, the inner side of which is filled with sound-absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921503944.5U CN210532658U (en) | 2019-09-10 | 2019-09-10 | Active noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921503944.5U CN210532658U (en) | 2019-09-10 | 2019-09-10 | Active noise reduction device |
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| Publication Number | Publication Date |
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| CN210532658U true CN210532658U (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921503944.5U Active CN210532658U (en) | 2019-09-10 | 2019-09-10 | Active noise reduction device |
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| CN (1) | CN210532658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981570A (en) * | 2020-08-11 | 2020-11-24 | 青岛海信日立空调系统有限公司 | Air pipe type air conditioner indoor unit |
-
2019
- 2019-09-10 CN CN201921503944.5U patent/CN210532658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981570A (en) * | 2020-08-11 | 2020-11-24 | 青岛海信日立空调系统有限公司 | Air pipe type air conditioner indoor unit |
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