CN112484289B - Noise reduction device, fresh air fan and noise reduction method - Google Patents
Noise reduction device, fresh air fan and noise reduction method Download PDFInfo
- Publication number
- CN112484289B CN112484289B CN202011312311.3A CN202011312311A CN112484289B CN 112484289 B CN112484289 B CN 112484289B CN 202011312311 A CN202011312311 A CN 202011312311A CN 112484289 B CN112484289 B CN 112484289B
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- noise
- reduction device
- silencing
- structures
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/242—Sound-absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/40—Noise
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a noise reduction device, a fresh air fan and a noise reduction method, wherein the noise reduction device is provided with a channel, and the noise reduction device comprises: the silencing structures are provided with a plurality of silencing holes; the silencing holes on different silencing structures have different hole diameters and/or different hole densities; the silencing holes of the silencing structures communicate the inner side and the outer side of the channel; a shielding structure, at least part of which is movably arranged to selectively expose the at least one sound attenuating structure; the driving structure is connected with the shielding structure so as to drive the shielding structure to switch among a plurality of positions; when the shielding structures are positioned at different positions, the exposed silencing structures are different; the noise detection module is used for detecting a noise signal; and the controller is electrically connected with the driving structure and the noise detection module so as to control the action of the driving structure according to the noise signal. The noise reduction device solves the problem that the noise reduction device in the prior art cannot be used under different noise conditions.
Description
Technical Field
The invention relates to the field of noise reduction, in particular to a noise reduction device, a fresh air fan and a noise reduction method.
Background
In the process of production and living, various noises are easy to generate, and the noises can cause a plurality of adverse effects on physical and psychological health of people. Therefore, noise reduction techniques are increasingly receiving attention.
The existing passive noise reducer can only produce better weakening effect on noise with specific frequency and strength due to the fixed structure, and when the noise changes, the noise reducing effect of the existing noise reducer is greatly reduced.
Therefore, the noise condition that the device of making an uproar was suitable for now is comparatively single, and the use limitation is great, can't satisfy and use under the different noise condition.
Disclosure of Invention
The invention mainly aims to provide a noise reduction device, a fresh air fan and a noise reduction method, and aims to solve the problem that the noise reduction device in the prior art cannot be used under different noise conditions.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a noise reducing device provided with a passage, the noise reducing device comprising: the silencing structures are provided with a plurality of silencing holes; the silencing holes on different silencing structures have different hole diameters and/or different hole densities; the silencing holes of the silencing structures communicate the inner side and the outer side of the channel; a shielding structure, at least part of which is movably arranged to selectively expose the at least one sound attenuating structure; the driving structure is connected with the shielding structure so as to drive the shielding structure to switch among a plurality of positions; when the shielding structures are positioned at different positions, the exposed silencing structures are different; the noise detection module is used for detecting a noise signal; and the controller is electrically connected with the driving structure and the noise detection module so as to control the action of the driving structure according to the noise signal detected by the noise detection module.
Further, the sound attenuating structure is made of a foamed metal material.
Furthermore, the channel extends along the preset direction, and the plurality of silencing structures are sequentially arranged along the preset direction; the shielding structure comprises a plurality of shielding pieces, and each shielding piece is movably arranged along the preset direction so as to selectively shield the silencing holes of the plurality of silencing structures.
Furthermore, the number of the silencing structures is N, and the number of the shielding pieces is N-1; wherein N is a natural number greater than 1.
Furthermore, each silencing structure is a first cylindrical structure; each shield comprises a second cylindrical structure; the second cylindrical structure is sleeved on the outer side of the first cylindrical structure, or the first cylindrical structure is sleeved on the outer side of the second cylindrical structure.
Furthermore, each silencing structure is a cylindrical structure, and an avoidance port extending along a preset direction is formed in the wall of each cylindrical structure; the shield includes: the first sleeve part is sleeved outside the tubular structure; a second sleeve part arranged in the tubular structure; the first sleeve part and the second sleeve part are connected with the connecting part; the connecting part is movably arranged in the avoiding opening along the preset direction.
Furthermore, each shielding piece comprises a driving part, and a threaded through hole is formed in the driving part; the driving structure includes: the screw rods extend along the preset direction, and are matched with the driving parts of the shielding pieces in a one-to-one correspondence manner; the plurality of rotary driving pieces are connected with the plurality of screw rods in a one-to-one correspondence manner so as to drive the corresponding screw rods to rotate; the plurality of rotary driving pieces are all electrically connected with the controller.
Furthermore, the number of the noise detection modules is two, and the two noise detection modules are arranged at two ends of the channel in a one-to-one correspondence manner.
Further, the controller comprises a communication module, and the communication module is used for receiving or transmitting the noise signal and the corresponding driving structure action command to the outside.
According to a second aspect of the present invention, a new fan is provided, where the new fan includes a main machine and the noise reduction device, and the noise reduction device is disposed at an air outlet of the new fan.
According to a third aspect of the present invention, there is provided a noise reduction method, in the above noise reduction apparatus, the noise reduction method comprising: acquiring a noise signal at an inlet of a channel of a noise reduction device; determining a noise reduction mode according to the noise signal; and controlling the movement of the driving structure of the noise reduction device according to the noise reduction mode.
Further, after the step of controlling the movement of the driving structure of the noise reduction apparatus according to the noise reduction mode, the noise reduction method further includes: acquiring a noise signal at the outlet of a channel of a noise reduction device; and sending the noise signal at the inlet of the channel of the noise reducer, the noise signal at the outlet of the channel of the noise reducer and the action command of the driving structure to the outside.
The noise reduction device applying the technical scheme of the invention is provided with a channel, and the noise reduction device comprises: the noise reduction device comprises a plurality of noise reduction structures, a shielding structure, a driving structure, a noise detection module and a controller, wherein a plurality of noise reduction holes are formed in each noise reduction structure, and the aperture and/or the hole density of the noise reduction holes in different noise reduction structures are different; the silencing holes of the silencing structures communicate the inner side and the outer side of the channel; at least a portion of the shade structure is movably disposed to selectively expose the at least one sound attenuating structure; the driving structure is connected with the shielding structure so as to drive the shielding structure to switch among a plurality of positions; when the shielding structures are positioned at different positions, the exposed silencing structures are different; the noise detection module is used for detecting a noise signal; the controller is electrically connected with the driving structure and the noise detection module so as to control the action of the driving structure according to the noise signal detected by the noise detection module. Thus, the noise detection module can acquire a noise signal, the controller can analyze the noise signal, and the driving structure is controlled to act according to the frequency, the intensity and the like of noise, so that a proper silencing structure is exposed. Therefore, the function of controlling the noise reduction mode according to the noise condition is realized, the noise reduction mode can be flexibly controlled according to the noise difference, the noise reduction device keeps high-efficiency noise reduction performance, and the problem that the noise reduction device in the prior art cannot meet the use requirements under different noise conditions is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of a first viewing angle of an embodiment of a noise reducing arrangement according to the invention;
FIG. 2 is an enlarged schematic view of a partial region of the noise reducer of FIG. 1;
FIG. 3 shows a schematic view of an exploded structure of an embodiment of a noise reducing device according to the present invention;
FIG. 4 shows a schematic cross-sectional structure of an embodiment of a noise reducer according to the invention from a second perspective;
FIG. 5 is an enlarged schematic view of a partial region of the noise reducer of FIG. 4;
FIG. 6 shows a schematic cross-sectional view of a third perspective of an embodiment of a noise reducer according to the present invention;
FIG. 7 is a schematic diagram illustrating the arrangement of a noise detection module and a controller of an embodiment of a noise reducer according to the present invention;
fig. 8 shows a schematic flow chart of a first embodiment of a noise reduction method according to the invention;
fig. 9 shows a schematic flow diagram of a second embodiment of a noise reduction method according to the present invention.
Wherein the figures include the following reference numerals:
100. a channel; 1. a sound deadening structure; 2. a shielding structure; 21. a shield; 211. a first sleeve portion; 212. a second sleeve portion; 213. a connecting portion; 214. a drive section; 3. a drive structure; 31. a screw rod; 32. a rotary drive member; 33. a coupling; 34. a supporting seat; 4. a noise detection module; 5. and a controller.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 7, a noise reduction device is provided, the noise reduction device is provided with a channel 100, and the noise reduction device includes: a plurality of silencing structures 1, wherein each silencing structure 1 is provided with a plurality of silencing holes; the silencing holes on different silencing structures 1 have different hole diameters and/or different hole densities; the silencing holes of the silencing structures 1 communicate the inner side and the outer side of the channel 100; a shielding structure 2, at least part of the shielding structure 2 being movably arranged to selectively expose the at least one sound attenuating structure 1; the driving structure 3 is connected with the shielding structure 2 to drive the shielding structure 2 to switch among a plurality of positions; when the shielding structure 2 is in different positions, the exposed silencing structure 1 is different; the noise detection module 4 is used for detecting a noise signal; and the controller 5 is electrically connected with the driving structure 3 and the noise detection module 4 so as to control the action of the driving structure 3 according to the noise signal detected by the noise detection module 4.
The noise reduction device of the present invention is provided with a channel 100, and the noise reduction device includes: the noise reduction device comprises a plurality of noise reduction structures 1, a shielding structure 2, a driving structure 3, a noise detection module 4 and a controller 5, wherein a plurality of noise reduction holes are formed in each noise reduction structure 1, and the aperture and/or the hole density of the noise reduction holes in different noise reduction structures 1 are different; the silencing holes of the silencing structures 1 communicate the inner side and the outer side of the channel 100; at least part of the shielding structure 2 is movably arranged to selectively expose at least one sound attenuating structure 1; the driving structure 3 is connected with the shielding structure 2 to drive the shielding structure 2 to switch among a plurality of positions; when the shielding structure 2 is in different positions, the exposed silencing structure 1 is different; the noise detection module 4 is used for detecting a noise signal; the controller 5 is electrically connected with both the driving structure 3 and the noise detection module 4 to control the action of the driving structure 3 according to the noise signal detected by the noise detection module 4. In this way, the noise detection module 4 can obtain the noise signal, and the controller 5 can analyze the noise signal, and control the driving structure 3 to operate according to the frequency, intensity, and the like of the noise, so as to expose the proper silencing structure 1. Therefore, the function of controlling the noise reduction mode according to the noise condition is realized, the noise reduction mode can be flexibly controlled according to the noise difference, the noise reduction device keeps high-efficiency noise reduction performance, and the problem that the noise reduction device in the prior art cannot meet the use requirements under different noise conditions is solved.
At least part of the shielding structure 2 is movably arranged to selectively expose at least one sound attenuating structure 1, meaning: during the movement of the shielding structure 2, there is a state in which at least one sound deadening structure 1 can be exposed.
In the present embodiment, the sound-deadening structure 1 is made of a foamed metal material. By adopting the foam metal material to manufacture the noise reduction structure 1, the attenuation of sound waves can be realized through the viscous resistance acting, the medium heat conduction effect, the metal framework heat conduction and the like of the foam metal material, and a better sound absorption effect is achieved. In addition, the foam metal with the silencing holes can resonate with noise with corresponding frequency in the silencing process, so that the energy of the noise is greatly reduced, and the silencing effect is improved. Of course, the sound-deadening structure 1 may also be another type of resistive sound-deadening structure.
Specifically, the passage 100 is extended along a preset direction, and the plurality of silencing structures 1 are sequentially arranged along the preset direction; the shielding structure 2 includes a plurality of shielding members 21, and each shielding member 21 is movably disposed along a predetermined direction to selectively shield the muffling holes of the plurality of muffling structures 1.
Specifically, the number of the silencing structures 1 is N, and the number of the shielding pieces 21 is N-1; wherein N is a natural number greater than 1.
By adopting the arrangement, the N-1 silencing structures 1 can be shielded through the N-1 shielding pieces 21, the rest silencing structures 1 are exposed, and the positions of the shielding pieces 21 are adjusted to control the exposure of the silencing structures 1, so that the noise reduction mode is controlled. In addition, because the number of the shielding piece 21 is one less than that of the noise reduction structure 1, an extra space is not required to be provided to avoid the movement of the shielding piece 21, the length of the noise reduction device in the preset direction can be effectively reduced, and the size of the noise reduction device is reduced. As shown in fig. 1, in the present embodiment, the number of the sound deadening structures 1 is 5, and the number of the blinders 21 is 4. Through controlling each shielding piece 21 motion, can control 5 amortization structures 1 and selectively expose to have 5 middle noise modes, improve the adaptability of noise reduction device to different noise annuluses.
It can be understood that the length of the shielding structure 2 along the preset direction is equal to or slightly different from the length of the silencing structure 1 along the preset direction, so that the shielding of the silencing hole of one silencing structure 1 can be realized through one shielding structure 2.
In order to shield the silencing structures 1, each silencing structure 1 is a first cylindrical structure; each shutter 21 comprises a second cylindrical structure; the second cylindrical structure is sleeved on the outer side of the first cylindrical structure, or the first cylindrical structure is sleeved on the outer side of the second cylindrical structure.
In the embodiment, each silencing structure 1 is a cylindrical structure, and an avoidance opening extending along a preset direction is formed in the wall of the cylindrical structure; the shutter 21 includes: a first sleeve part 211 sleeved outside the tubular structure; a second sleeve portion 212 provided inside the tubular structure; a connecting portion 213 to which the first sleeve portion 211 and the second sleeve portion 212 are both connected; the connection portion 213 is movably disposed in the escape opening along a predetermined direction. The plurality of muffling holes are arranged on the wall of the first cylindrical structure.
In order to be able to control the movement of the shutter 2, each shutter 21 comprises a driving portion 214, the driving portion 214 being provided with a threaded through hole; the drive structure 3 includes: the screw rods 31 extend along the preset direction, and the screw rods 31 are matched with the driving parts 214 of the shielding pieces 21 in a one-to-one correspondence manner; the plurality of rotary driving pieces 32 are connected with the plurality of screw rods 31 in a one-to-one correspondence manner so as to drive the corresponding screw rods 31 to rotate; the plurality of rotary drives 32 are each electrically connected to the controller 5.
One end of the screw rod 31 is connected with the rotary driving piece 32 through a coupler 33, and the other end of the screw rod 31 is supported through a supporting seat 34. In the present embodiment, the rotary drive 32 is a motor.
In this embodiment, there are two noise detection modules 4, and the two noise detection modules 4 are disposed at two ends of the channel 100 in a one-to-one correspondence. Therefore, the detection of noise signals before and after noise reduction can be realized, and the noise reduction effect of the corresponding noise reduction mode on the current noise is judged.
Specifically, the controller 5 includes a communication module to receive or transmit the noise signal and the corresponding actuation command of the driving structure 3 to the outside through the communication module.
In addition, the invention also provides a fresh air fan, which comprises a host and the noise reduction device, wherein the noise reduction device is arranged at the air outlet of the fresh air fan.
Referring to fig. 8 and fig. 9, the present invention further provides a noise reduction method, where the noise reduction device includes: acquiring a noise signal at an inlet of a channel 100 of the noise reduction device; determining a noise reduction mode according to the noise signal; the movement of the drive structure 3 of the noise reducing means is controlled according to the noise reduction mode.
Specifically, after the step of controlling the movement of the driving structure 3 of the noise reducing device according to the noise reduction mode, the noise reduction method further comprises: acquiring a noise signal at the outlet of a channel 100 of the noise reduction device; the noise signal at the inlet of the passage 100 of the noise reducer, the noise signal at the outlet of the passage 100 of the noise reducer, and the operation command of the driving structure 3 are sent to the outside.
In addition, the noise reduction device comprises a storage module, wherein the storage module is used for storing a plurality of preset noise reduction modes, and the preset noise reduction modes comprise noise signals and action instructions of the driving structure 3 in one-to-one correspondence.
The noise reduction method also comprises the steps of receiving a noise reduction mode and storing the noise reduction mode in a storage module;
the step of determining a noise reduction mode from the noise reduction signal comprises: a noise reduction mode corresponding to the noise reduction signal is selected from a plurality of preset noise reduction modes.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the noise reduction device of the present invention is provided with a channel 100, and the noise reduction device includes: the noise reduction device comprises a plurality of noise reduction structures 1, a shielding structure 2, a driving structure 3, a noise detection module 4 and a controller 5, wherein a plurality of noise reduction holes are formed in each noise reduction structure 1, and the aperture and/or the hole density of the noise reduction holes in different noise reduction structures 1 are different; the silencing holes of the silencing structures 1 communicate the inner side and the outer side of the channel 100; at least part of the shielding structure 2 is movably arranged to selectively expose at least one sound attenuating structure 1; the driving structure 3 is connected with the shielding structure 2 to drive the shielding structure 2 to switch among a plurality of positions; when the shielding structure 2 is in different positions, the exposed silencing structure 1 is different; the noise detection module 4 is used for detecting a noise signal; the controller 5 is electrically connected with both the driving structure 3 and the noise detection module 4 to control the action of the driving structure 3 according to the noise signal detected by the noise detection module 4. In this way, the noise detection module 4 can obtain the noise signal, and the controller 5 can analyze the noise signal, and control the driving structure 3 to operate according to the frequency, intensity, and the like of the noise, so as to expose the proper silencing structure 1. Therefore, the function of controlling the noise reduction mode according to the noise condition is realized, the noise reduction mode can be flexibly controlled according to the noise difference, the noise reduction device keeps high-efficiency noise reduction performance, and the problem that the noise reduction device in the prior art cannot meet the use requirements under different noise conditions is solved.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (12)
1. A noise reducer having a channel (100) therein, the noise reducer comprising:
the noise reduction structure comprises a plurality of noise reduction structures (1), wherein a plurality of noise reduction holes are formed in each noise reduction structure (1); the silencing holes on different silencing structures (1) are different in aperture and/or hole density; the silencing holes of the silencing structures (1) are communicated with the inner side and the outer side of the channel (100);
a shielding structure (2), at least part of said shielding structure (2) being movably arranged to selectively expose at least one of said sound attenuating structures (1);
a driving structure (3) connected with the shielding structure (2) to drive the shielding structure (2) to switch among a plurality of positions; when the shielding structure (2) is at different positions, the exposed silencing structure (1) is different;
the noise detection module (4) is used for detecting a noise signal;
and the controller (5) is electrically connected with the driving structure (3) and the noise detection module (4) so as to control the action of the driving structure (3) according to the noise signal detected by the noise detection module (4).
2. The noise reduction device according to claim 1, characterized in that the sound-attenuating structure (1) is made of a foamed metal material.
3. The noise reduction device according to claim 1, characterized in that the channel (100) is arranged extending along a preset direction, along which a plurality of the silencing structures (1) are arranged in sequence; the shielding structure (2) comprises a plurality of shielding pieces (21), and each shielding piece (21) is movably arranged along the preset direction so as to selectively shield the silencing holes of the silencing structures (1).
4. The noise reduction device according to claim 3, characterized in that said silencing structure (1) is N, said screen (21) is N-1; wherein N is a natural number greater than 1.
5. The noise reduction device according to claim 3, characterized in that each of the sound-attenuating structures (1) is a first cylindrical structure; each of said shutters (21) comprises a second cylindrical structure;
the second tubular structure is sleeved on the outer side of the first tubular structure, or the first tubular structure is sleeved on the outer side of the second tubular structure.
6. The noise reduction device according to claim 3, wherein each of the noise reduction structures (1) is a cylindrical structure, and an avoidance port extending along the preset direction is formed in the cylindrical wall of the cylindrical structure; the shutter (21) comprises:
a first sleeve part (211) sleeved outside the cylindrical structure;
a second sleeve section (212) provided inside the tubular structure;
a connecting portion (213), the first sleeve portion (211) and the second sleeve portion (212) both being connected to the connecting portion (213); the connecting part (213) is movably arranged in the avoiding opening along the preset direction.
7. The noise reduction device according to claim 3, characterized in that each shutter (21) comprises a driving portion (214), said driving portion (214) being provided with a threaded through hole; the drive structure (3) comprises:
the lead screws (31) extend along the preset direction, and the lead screws (31) are matched with the driving parts (214) of the shielding pieces (21) in a one-to-one correspondence manner;
the plurality of rotary driving parts (32), the plurality of rotary driving parts (32) are connected with the plurality of screw rods (31) in a one-to-one correspondence manner so as to drive the corresponding screw rods (31) to rotate; the plurality of rotary driving members (32) are electrically connected with the controller (5).
8. The noise reduction device according to any one of claims 1 to 7, wherein there are two noise detection modules (4), and the two noise detection modules (4) are disposed at two ends of the channel (100) in a one-to-one correspondence.
9. Noise reducing device according to any one of claims 1 to 7, wherein the controller (5) comprises a communication module to receive or transmit to the outside, via said communication module, a noise signal and a command for the actuation of the driving structure (3) corresponding thereto.
10. A fresh air machine, characterized in that, the fresh air machine comprises a host and the noise reduction device of any one of claims 1 to 9, the noise reduction device is arranged at the air outlet of the fresh air machine.
11. A noise reduction method for the noise reduction apparatus according to any one of claims 1 to 9, characterized by comprising:
acquiring a noise signal at an inlet of a channel (100) of the noise reduction device;
determining a noise reduction mode according to the noise signal;
-controlling the movement of the driving structure (3) of the noise reducing device according to the noise reduction mode.
12. The noise reduction method according to claim 11, characterized in that after the step of controlling the movement of the driving structure (3) of the noise reduction device according to the noise reduction mode, the noise reduction method further comprises:
acquiring a noise signal at an outlet of a channel (100) of the noise reduction device;
and sending the noise signal at the inlet of the channel (100) of the noise reduction device, the noise signal at the outlet of the channel (100) of the noise reduction device and the action command of the driving structure (3) to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312311.3A CN112484289B (en) | 2020-11-20 | 2020-11-20 | Noise reduction device, fresh air fan and noise reduction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312311.3A CN112484289B (en) | 2020-11-20 | 2020-11-20 | Noise reduction device, fresh air fan and noise reduction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112484289A CN112484289A (en) | 2021-03-12 |
| CN112484289B true CN112484289B (en) | 2021-11-30 |
Family
ID=74932378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011312311.3A Active CN112484289B (en) | 2020-11-20 | 2020-11-20 | Noise reduction device, fresh air fan and noise reduction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112484289B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237259B (en) * | 2021-06-07 | 2022-11-25 | 宁波奥克斯电气股份有限公司 | Noise rectifying device and method of air conditioner and air conditioner |
| CN113699967A (en) * | 2021-09-02 | 2021-11-26 | 吴婵 | Formula of making an uproar construction tamp equipment falls |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5460570A (en) * | 1993-02-04 | 1995-10-24 | Kabushiki Kaisha Toshiba | Ventilator for elevator cage |
| CN203595247U (en) * | 2013-09-24 | 2014-05-14 | Tcl空调器(中山)有限公司 | Silencer and inverter air conditioner |
| DE102013203625A1 (en) * | 2013-03-04 | 2014-09-04 | Gerhard FEUSTLE | Decentralized ventilation apparatus has sound passage openings which are arranged in different noise control walls of sound proofing device, so that acoustic energy is divided into two components which are overlaid by one control wall |
| CN204165212U (en) * | 2013-12-18 | 2015-02-18 | 海尔集团公司 | A kind of multisection type full rate section air conditioner muffler |
| CN205425376U (en) * | 2016-02-02 | 2016-08-03 | 深圳市金迈高智能科技有限公司 | Take active noise reduction's new fan |
| CN108826648A (en) * | 2018-08-01 | 2018-11-16 | 深圳市风轻云科技有限公司 | A kind of noise reduction air duct |
| KR20180134753A (en) * | 2018-05-18 | 2018-12-19 | 주식회사 누리플랜 | Noise reducing louver |
| CN110608169A (en) * | 2019-09-05 | 2019-12-24 | 珠海格力电器股份有限公司 | Compressor noise reduction box, noise reduction method, compressor and air conditioner |
| CN210070186U (en) * | 2019-06-21 | 2020-02-14 | 珠海格力电器股份有限公司 | Silencer and air conditioner |
| CN110940083A (en) * | 2019-12-31 | 2020-03-31 | 天津丽茂源松节能技术有限公司 | Silencing device of new trend system |
| CN111022814A (en) * | 2019-12-17 | 2020-04-17 | 华电重工股份有限公司 | Matrix type silencer |
| CN111156202A (en) * | 2020-03-24 | 2020-05-15 | 河南绿典环保节能科技有限公司 | Mining is for local fan gas elimination guiding device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012083698A1 (en) * | 2011-08-01 | 2012-06-28 | 华为技术有限公司 | Ventilation denoising device and ventilation denoising system |
| CN210624871U (en) * | 2019-09-20 | 2020-05-26 | 成都希音科技有限公司 | Broadband noise reduction device for fresh air equipment |
| CN211503203U (en) * | 2020-02-21 | 2020-09-15 | 张亚丽 | Energy-saving and noise-reducing structure in ventilation process of air conditioning unit |
| CN111336642A (en) * | 2020-04-15 | 2020-06-26 | 江苏弘冉智能科技有限公司 | Real-time protection air curtain system |
-
2020
- 2020-11-20 CN CN202011312311.3A patent/CN112484289B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5460570A (en) * | 1993-02-04 | 1995-10-24 | Kabushiki Kaisha Toshiba | Ventilator for elevator cage |
| DE102013203625A1 (en) * | 2013-03-04 | 2014-09-04 | Gerhard FEUSTLE | Decentralized ventilation apparatus has sound passage openings which are arranged in different noise control walls of sound proofing device, so that acoustic energy is divided into two components which are overlaid by one control wall |
| CN203595247U (en) * | 2013-09-24 | 2014-05-14 | Tcl空调器(中山)有限公司 | Silencer and inverter air conditioner |
| CN204165212U (en) * | 2013-12-18 | 2015-02-18 | 海尔集团公司 | A kind of multisection type full rate section air conditioner muffler |
| CN205425376U (en) * | 2016-02-02 | 2016-08-03 | 深圳市金迈高智能科技有限公司 | Take active noise reduction's new fan |
| KR20180134753A (en) * | 2018-05-18 | 2018-12-19 | 주식회사 누리플랜 | Noise reducing louver |
| CN108826648A (en) * | 2018-08-01 | 2018-11-16 | 深圳市风轻云科技有限公司 | A kind of noise reduction air duct |
| CN210070186U (en) * | 2019-06-21 | 2020-02-14 | 珠海格力电器股份有限公司 | Silencer and air conditioner |
| CN110608169A (en) * | 2019-09-05 | 2019-12-24 | 珠海格力电器股份有限公司 | Compressor noise reduction box, noise reduction method, compressor and air conditioner |
| CN111022814A (en) * | 2019-12-17 | 2020-04-17 | 华电重工股份有限公司 | Matrix type silencer |
| CN110940083A (en) * | 2019-12-31 | 2020-03-31 | 天津丽茂源松节能技术有限公司 | Silencing device of new trend system |
| CN111156202A (en) * | 2020-03-24 | 2020-05-15 | 河南绿典环保节能科技有限公司 | Mining is for local fan gas elimination guiding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112484289A (en) | 2021-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112484289B (en) | Noise reduction device, fresh air fan and noise reduction method | |
| JP6450003B2 (en) | Soundproof structure | |
| JP6616516B2 (en) | Soundproof structure and soundproof system | |
| US5508477A (en) | Apparatus for acoustic noise reduction of office automation devices utilizing Helmholtz resonance theory | |
| US20110222698A1 (en) | Noise reduction device | |
| WO2015029044A2 (en) | Incubator with a noise muffling mechanism and method thereof | |
| US6078676A (en) | Speaker system with a three-dimensional spiral sound passage | |
| JP2013164229A (en) | Silencing ventilation device | |
| JP4784249B2 (en) | Electronic device inspection method and electronic device inspection device | |
| WO2013125569A1 (en) | X-ray ct device | |
| KR20160045747A (en) | System having a control unit | |
| CN210624871U (en) | Broadband noise reduction device for fresh air equipment | |
| AU7221998A (en) | Loudspeaker systems | |
| CN112780872A (en) | Noise eliminator in pipeline | |
| US10798476B2 (en) | Slidable microphone inside a portable device | |
| CN113646543A (en) | Blower with silencer | |
| CN212157611U (en) | A equipment of making an uproar falls in amortization for it is electromechanical | |
| CN205408112U (en) | Domestic animal earphone | |
| CN110685940A (en) | Low-noise energy-saving environment-friendly integrated mixed flow fan | |
| CN220522150U (en) | Assembled compressor falls between making an uproar | |
| CN203743132U (en) | Air-filtering silencer | |
| CN217763889U (en) | Device for fixing central air-conditioning unit | |
| CN216245855U (en) | Anti-unmanned aerial vehicle device based on radar technology | |
| CN216896358U (en) | Noise eliminator in pipeline | |
| CN103807220B (en) | Bispin active blower fan noise reduction assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |