CN109243419A - A kind of ventilating sound-proof structure based on acoustic metamaterial technology - Google Patents
A kind of ventilating sound-proof structure based on acoustic metamaterial technology Download PDFInfo
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- CN109243419A CN109243419A CN201811265734.7A CN201811265734A CN109243419A CN 109243419 A CN109243419 A CN 109243419A CN 201811265734 A CN201811265734 A CN 201811265734A CN 109243419 A CN109243419 A CN 109243419A
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- 238000005516 engineering process Methods 0.000 title description 14
- 230000001413 cellular effect Effects 0.000 claims abstract description 43
- 230000000737 periodic effect Effects 0.000 claims abstract description 3
- 238000005192 partition Methods 0.000 claims description 141
- 238000004891 communication Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 21
- 238000009413 insulation Methods 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000338742 Erebia meta Species 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
Abstract
The present disclosure proposes a kind of ventilating sound-proof structures, comprising: multiple cellulars (1) of a cellular or periodic arrangement；Wherein, the cellular includes: first panel (10), and center is equipped with the first opening (101)；Second panel (20), is oppositely arranged with the first panel, and center is equipped with the second opening, opposite with the position of first opening；And sandwich layer (30), between the first panel and second panel, with multiple operatic tunes runners (301), the multiple operatic tunes runner is connected to the first opening and the second opening.Disclosure ventilating sound-proof structure can inhibit air flow noise in wide frequency range, with light-weight, high temperature resistant, fire prevention, resistance to vapours attack and impingment corrosion characteristic.
Description
Technical field
This disclosure relates to ventilating sound-proof technical field more particularly to a kind of ventilating sound-proof knot based on acoustic metamaterial technology
Structure.
Background technique
With the development of industry and science and technology, dynamic power machine and electronic equipments equipment are had been more and more widely used.
However, mechanical equipment can all supervene noise, and requirement of the Machine Design to ventilation limits the effect of sound insulation measure, tradition
Aeration structure hardly insulate against sound.Cabin noise control is paid more and more attention, and with the application of cabin control new technology, is dissipated in cabin
The noise of hot ventilation equipment and large-scale return air inlet becomes one of the important sources for influencing cabin noise.Heat dissipation ventilation equipment is due to logical
The demand of wind heat dissipation, traditional sound insulating structure/material can not effectively play a role, and cause the noise generated in operational process several
It leaks completely.How sound insulation and ventilation are taken into account, becomes ventilating sound-proof design facing challenges.
Summary of the invention
(1) technical problems to be solved
Present disclose provides a kind of ventilating sound-proof structures based on acoustic metamaterial technology, at least partly to solve the above institute
?.
(2) technical solution
According to one aspect of the disclosure, a kind of ventilating sound-proof structure is provided, comprising: a cellular or periodically row
Multiple cellulars of column；Wherein, the cellular includes:
First panel, center are equipped with the first opening；
Second panel is oppositely arranged with the first panel, and center is equipped with the second opening, the position with first opening
It sets opposite；And
Sandwich layer, between the first panel and second panel, with multiple operatic tunes runners, the multiple operatic tunes stream
Road is connected to the first opening and the second opening.
In some embodiments, the sandwich layer includes a frame, and multiple separator units in frame, each partition
Unit includes the partition of multiple and different length, formed between adjacent partition and between partition and frame it is multiple it is curved not
With the operatic tunes runner of length.
In some embodiments, the frame includes four side plates, respectively the first side plate, the second side plate, third side plate
It with the 4th side plate, is sequentially connected end to end in turn, surrounds rectangular-shaped；
The sandwich layer includes separator unit described in a frame and two or four in the frame, each every
Plate unit includes a plate and three bent plates.
In some embodiments, the sandwich layer includes two separator units, respectively first partition unit and second
Separator unit, one end of multiple partitions of first partition unit are connect with first side plate, second partition unit it is multiple every
One end of plate is connect with the third side plate；The other end of multiple partitions of the first partition unit and the second partition list
The other end of multiple partitions of member is opposite.
In some embodiments, each bent plate includes the first extension, the second extension and interconnecting piece, the interconnecting piece
One end is connect with first extension, and the other end is connect with the second extension；
First extension of the plate and the bent plate, the second extension edge are parallel to the second side plate, the 4th side plate
Direction extend, the interconnecting piece of the bent plate extends along the direction for being parallel to the first side plate, third side plate, and each bent plate passes through first
Extension is connect with side plate.
In some embodiments, the first extending part of each bent plate of first partition unit is in the plate of first partition unit
With the region between the second side plate, the second extending part of each bent plate of first partition unit in first partition unit plate with
Region between the plate of second partition unit；
First extending part of each bent plate of second partition unit is between the plate and the 4th side plate of second partition unit
Region, the second extending part of each bent plate of second partition unit is in the plate and first partition unit of second partition unit
Region between plate；
By described the other end of the bent plate of the plate and two separator units of two separator units, in the member
Born of the same parents center limits a space, and the operatic tunes runner passes through the space and first opening and the second open communication.
In some embodiments, the sandwich layer includes four separator units, respectively first partition unit, second partition list
Member, third separator unit and the 4th separator unit；
One end of multiple partitions of first partition unit is connect with first side plate, multiple partitions of second partition unit
One end connect with second side plate, one end of multiple partitions of third separator unit is connect with the third side plate, the 4th
One end of multiple partitions of separator unit is connect with the 4th side plate；
The other end of multiple partitions of the first partition unit is another with multiple partitions of the third separator unit
End is opposite, the other end of multiple partitions of the other end of multiple partitions of the second partition unit and the 4th separator unit
Relatively；
Four separator units limit a space at the cellular center, the operatic tunes runner by the space with
First opening and the second open communication.
In some embodiments, the bent plate be L-type plate comprising an extension and connect with an extension one
Interconnecting piece；
The extension of the plate and the L-type plate of first partition unit and third separator unit edge is parallel to second
The interconnecting piece of the L-type plate of the direction extension of side plate, the 4th side plate, the first partition unit and third separator unit is along flat
Row extends in the direction of the first side plate, third side plate；
The extension of the plate and the L-type plate of the second partition unit and the 4th separator unit edge is parallel to
The interconnecting piece of the L-type plate of the direction extension of first side plate, third side plate, the second partition unit and the 4th separator unit
Extend along the direction for being parallel to the second side plate, the 4th side plate.
In some embodiments, the frame, operatic tunes cross section of fluid channel, the first opening and the second opening are rounded or polygon
Shape.
In some embodiments, the thickness of the cellular is between 6~30mm；The thickness of first, second panel between
Between 0.2~3mm；The opening area of first, second panel is between 100~1000mm2Between；Cellular size between 1650~
10000mm2Between；Operatic tunes width of flow path Δ d is between 1~5mm；The wall thickness of operatic tunes runner is between 0.5~2.5mm.
(3) beneficial effect
It can be seen from the above technical proposal that a kind of ventilating sound-proof structure based on acoustic metamaterial technology of the disclosure is at least
Have the advantages that one of them:
(1) disclosure ventilating sound-proof structure can take into account ventilation and sound insulation effect, effectively meet use demand.
(2) disclosure ventilating sound-proof structure is based on acoustic metamaterial technology, using the fine building of intralamellar part structure, inside
Portion integrates Meta Materials resonating member, can guarantee performance of ventilating, while realizing higher sound insulation property.
(3) ventilating sound-proof structure of the present invention realizes relatively small thickness control by the way that operatic tunes runner to be bent in a thickness direction
Lower frequency of sound wave.It is designed using the curved channel of Meta Materials technology, by designing the operatic tunes runner of different length, not cocurrent flow
The different frequency of sound wave of the corresponding control of road length, can inhibit air flow noise in wide frequency range.
(4) use all-metal structure, with light-weight, high temperature resistant, fire prevention, resistance to vapours attack and impingment corrosion characteristic.
Detailed description of the invention
Fig. 1 is disclosure ventilating sound-proof structural schematic diagram.
Fig. 2 is the cellular schematic diagram of disclosure ventilating sound-proof structure.
Fig. 3 is the cellular explosive view of disclosure ventilating sound-proof structure.
Fig. 4 is one embodiment cellular core structure schematic diagram of the disclosure.
Fig. 5 is the bending plate schematic diagram in Fig. 4 cellular sandwich layer.
Fig. 6 is another embodiment cellular core structure schematic diagram of the disclosure.
Fig. 7 is the bending plate schematic diagram in Fig. 6 cellular sandwich layer.
Specific embodiment
For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
Disclosure wideband ventilating sound-proof structure is based on acoustic metamaterial technology, using the fine building of intralamellar part structure, leads to
It crosses and is internally integrated Meta Materials resonating member, can realize higher sound insulation property under the premise of keeping original performance of ventilating constant,
By the way that operatic tunes runner to be bent in a thickness direction, realizes that relatively small thickness controls lower frequency of sound wave, press down in wide frequency range
Air flow noise processed at least improves 5dB compared with tradition ventilation structure mean transmission loss, has light-weight, high temperature resistant, fire prevention, resistance to steaming
The advantages of vapour erosion and impingment corrosion.
Present disclose provides a kind of ventilating sound-proof structures, as shown in Figure 1-3, the ventilating sound-proof structure includes: a member
Multiple cellulars 1 of born of the same parents or periodic arrangement；Wherein, the cellular includes:
First panel 10, center are equipped with the first opening 101；
Second panel 20 is oppositely arranged with the first panel, and center is equipped with the second opening (not shown), with described the
The position of one opening is opposite；And
Sandwich layer 30, between the first panel and second panel, with multiple runners 301, multiple runner with
The first opening and the second opening connection.
Disclosure ventilating sound-proof structure, air is circulated by hatch frame, and sound wave is reflected by operatic tunes runner, so both leading to
Wind insulates against sound again.
Using the fine building of intralamellar part structure, can be realized higher under the premise of keeping original performance of ventilating constant
Sound insulation property.
Wherein, the sandwich layer includes a frame, and multiple separator units in frame, and each separator unit includes more
The different partition of a length forms the institute of multiple curved different lengths between adjacent partition and between partition and frame
State operatic tunes runner.It is designed as a result, using the curved channel of Meta Materials technology, it is different by designing the operatic tunes runner of different length
The different frequency of sound wave of the corresponding control of flow channel length can inhibit air flow noise (i.e. Meta Materials technology in wide frequency range
Wideband sound insulation).
The different length of partition corresponds to the control of different frequency sound wave, and septum plate length is mainly according to the size of cellular and face
The percent opening (aperture opening ratio) of plate determines, in the size of cellular and the percent opening of panel, after the arrangement mode of partition determines, partition
Length can determine.
Specifically, the ventilating sound-proof structure can be the sound insulating structure of 5 × 5 cellulars arrangement, as shown in Figure 1.Certainly, Fig. 1
Shown 5 × 5 cellular arrangement is intended only as a kind of exemplary illustration, it will be apparent to a skilled person that its sound insulating structure
It can be arranged using arbitrary cellular, however it is not limited to the arrangement of 5 × 5 cellulars.
The ventilating sound-proof structure uses all-metal structure, and the thickness of the cellular is between 6~30mm；First and second
The thickness of panel is between 0.2~3mm；The opening area of first and second panel is between 100~1000mm2Between；Cellular size
Between 1650~10000mm2Between；Operatic tunes width of flow path Δ d is between 1~5mm；The wall thickness of operatic tunes runner between 0.5~
Between 2.5mm.
As shown in Fig. 2, first opening, the second opening can be rectangular opening, cellular can be rectangle, the thickness of sound insulating structure
For H, the thickness of the first and second panel is d, and the area of the first and second panel rectangular opening is w × e, and the area of cellular is a × b, is led to
Ventilation rate η=we/ (ab) of wind sound insulating structure.
In one embodiment, as illustrated in figures 4-5, first opening, the second opening are square hole；Sandwich layer have 8 runners with
Square hole is connected.Specifically, the sandwich layer includes a frame, which includes four side plates, respectively the first side plate 302, second
Side plate 303, third side plate 304 and the 4th side plate 305, are sequentially connected end to end in turn, surround rectangular frame.First side plate and third
Side plate is oppositely arranged, and the second side plate and the 4th side plate are oppositely arranged.
The sandwich layer further includes two separator units, respectively first partition unit and second partition unit.Each partition
Unit include from inside to outside or ecto-entad arrangement multiple partitions, length successively increases multiple partitions from inside to outside.Specific to
The present embodiment, each separator unit include a plate 306 (i.e. first partition) and three bent plates 307,308,309 (respectively the
Two partitions, third partition, the 4th partition).The plate 306, bent plate 307, bent plate 308, bent plate 309 length successively increase.
Wherein one end of two separator units is connect with two opposite side plates respectively, and the other end is towards sandwich layer middle part, specifically
, one end of multiple partitions of first partition unit is connect with first side plate, and the one of multiple partitions of second partition unit
End is connect with the third side plate.The other end of multiple partitions of the first partition unit is more with the second partition unit
The other end of a partition is opposite and does not contact.
The plate 306 is located at the position in the middle part of sandwich layer, and has an interval between the plate of two separator units.
Each bent plate 307,308,309 is inShape, is respectively enclosed to an open area, and the plate 306 is located at the bent plate 306
In the region surrounded, the bent plate 306 is located in the region that bent plate 307 surrounds, and the bent plate 307 is located at what bent plate 308 surrounded
In region.Each bent plate include the first extension 310, the second extension 311 and interconnecting piece 312, the interconnecting piece one end with it is described
The connection of first extension, the other end are connect with the second extension.The plate 306, the first extension of bent plate 307, bent plate 308
The first extension, bent plate 309 the length of the first extension successively increase；The second extension, the bent plate of the bent plate 307
308 the second extension, bent plate 309 the length of the second extension successively increase；Interconnecting piece, the bent plate 308 of the bent plate 307
Interconnecting piece, bent plate 309 the length of interconnecting piece successively increase.
First extension of the plate and the bent plate extends along the direction for being parallel to the second side plate, the 4th side plate,
Second extension of the bent plate extends along the direction for being parallel to the second side plate, the 4th side plate, and the interconnecting piece of the bent plate is along flat
Row extends in the direction of the first side plate, third side plate.
First extending part of each bent plate of first partition unit is between the plate and the second side plate of first partition unit
Region, the second extending part of each bent plate of first partition unit is in the plate and second partition unit of first partition unit
Region between plate.Plate and fourth side of first extending part of each bent plate of second partition unit in second partition unit
Region between plate, the second extending part of each bent plate of second partition unit is in the plate and first partition of second partition unit
Region between the plate of unit.Formed between adjacent partition and between partition that side plate is adjacent thereto it is multiple it is curved not
With the runner 301 of length, for example, between the 4th side plate 305 and bent plate 309, between the first side plate 302 and bent plate 309, bent plate 309
Between 308 between bent plate, 307 between bent plate 308 and bent plate between, between bent plate 307 and plate 306, bent plate 309 and plate
Between 306 etc..
By described the other end of the bent plate of the plate and two separator units of two separator units, described
Cellular center limits a space 313.The space is opposite with the position of first opening and the second opening, and area is identical.Institute
It states runner and is formed in the space that sandwich layer cellular center core layer removes opening, and be connected with opening.
In the present embodiment, the sandwich layer is formed with 8 runners, wherein the thickness H=12mm of the cellular；Upper and lower panel
Thickness d=1mm；The opening size w=15mm, e=15mm of upper and lower panel；Cellular size a=52mm, b=52mm；Runner
Width Delta d=3mm；The wall thickness t=1mm of runner.The length of four partitions of each separator unit is from small to large successively are as follows:
33.18mm、48.62mm、65.75mm、82.87mm。
In another embodiment, as shown in fig. 6-7, unlike previous embodiment, sandwich layer has 16 runners and square hole
It is connected.Specifically, the sandwich layer further includes four separator units, each separator unit includes multiple partitions, and multiple partitions are by interior
And outer length successively increases.Specific to the present embodiment, each separator unit includes a plate 314 and three bent plates 315,316,
317.The plate 314, bent plate 315, bent plate 316, bent plate 317 length successively increase.
One end of multiple partitions of first partition unit is connect with first side plate 302, second partition unit it is multiple
One end of partition is connect with second side plate 303, one end of multiple partitions of third separator unit and the third side plate 304
Connection, one end of multiple partitions of the 4th separator unit is connect with the 4th side plate 305.The first partition unit it is multiple
The other end of partition is opposite with the other end of multiple partitions of the third separator unit, the second partition unit it is multiple every
The other end of plate is opposite with the other end of multiple partitions of the 4th separator unit.
One end of the plate of each separator unit is connect with each side plate respectively, and the other end extends close to the position at sandwich layer center
It sets, and there is interval between each other；Each bent plate is located at two adjacent side plates and is respectively connected with two with the two side plates
In the bent plate region that plate limits, and there is interval between each other.
The bent plate is L-type plate comprising an extension 318 and the interconnecting piece 319 connecting with first extension.
Wherein, the extension of the plate and the L-type plate of first partition unit and third separator unit edge is parallel to second side
The direction extension of plate, the 4th side plate, the first partition unit is with the interconnecting piece of the L-type plate of third separator unit along parallel
Extend in the direction of the first side plate, third side plate.The plate and the L of the second partition unit and the 4th separator unit
The extension of template extends along the direction for being parallel to the first side plate, third side plate, the second partition unit and the 4th partition
The interconnecting piece of the L-type plate of unit extends along the direction for being parallel to the second side plate, the 4th side plate.The plate 314, bent plate
315 the first extension, the first extension of bent plate 316, bent plate 317 the length of the first extension successively increase；It is described curved
The interconnecting piece of plate 315, the interconnecting piece of bent plate 316, bent plate 317 the length of interconnecting piece successively increase.
The runner of multiple curved different lengths is formed between adjacent partition and between partition that side plate is adjacent thereto.
Four separator units limit a space, the position in the space and first opening and the second opening at the cellular center
Relatively, area is identical.The runner is formed in the space that sandwich layer cellular center core layer removes opening, and is connected with opening.
In the present embodiment, the sandwich layer is formed with 16 runners, wherein the cellular integral thickness H=12mm；Above and below
Plate thickness d=1mm, upper and lower panel center square hole size w=15mm, e=15mm；Cellular size a=52mm, b=52mm；
Width of flow path Δ d=3mm；The wall thickness t=1mm of runner.The length of four partitions of each separator unit is followed successively by from small to large
17.5mm、24.9mm、33.25mm、41.62mm。
Particular embodiments described above has carried out further in detail the purpose of the disclosure, technical scheme and beneficial effects
Describe in detail it is bright, it is all it should be understood that be not limited to the disclosure the foregoing is merely the specific embodiment of the disclosure
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
So far, attached drawing is had been combined the embodiment of the present disclosure is described in detail.According to above description, art technology
Personnel should have clear understanding to the disclosure.
It should be noted that in attached drawing or specification text, the implementation for not being painted or describing is affiliated technology
Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, the above-mentioned definition to each element and method is simultaneously
It is not limited only to various specific structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can carry out letter to it
It singly changes or replaces.
Under the limitation of the space of cellular, the quantity of the runner is not limited to 8 or 16, can according to width of flow path and
Length carries out design, and the section of runner can be circle, triangle, square etc..
The quantity of the separator unit is not limited to two or four, and the quantity of the partition of each separator unit is also not necessarily limited to
One plate and three bent plates, bent plate are also not necessarily limited toShape or L shape.
The panel, sandwich layer, opening shape be also not necessarily limited to rectangle, can also be other shapes, such as round, triangle
Shape, hexagon etc..
Certainly, according to actual needs, the step of method of disclosure also includes other, due to the same disclosure innovation without
It closes, details are not described herein again.
Particular embodiments described above has carried out further in detail the purpose of the disclosure, technical scheme and beneficial effects
Describe in detail bright, it should be understood that the foregoing is merely the specific embodiment of the disclosure, be not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the protection of the disclosure
Within the scope of.
Claims (10)
1. a kind of ventilating sound-proof structure, comprising: multiple cellulars (1) of a cellular or periodic arrangement；Wherein, the cellular
Include:
First panel (10), center are equipped with the first opening (101)；
Second panel (20), is oppositely arranged with the first panel, and center is equipped with the second opening, the position with first opening
It sets opposite；And
Sandwich layer (30), it is the multiple with multiple operatic tunes runners (301) between the first panel and second panel
Operatic tunes runner is connected to the first opening and the second opening.
2. ventilating sound-proof structure according to claim 1, wherein the sandwich layer includes a frame, and in frame
Multiple separator units, each separator unit include the partition of multiple and different length, between adjacent partition and partition and frame
Between form the operatic tunes runners of multiple curved different lengths.
3. ventilating sound-proof structure according to claim 2, wherein
The frame includes four side plates, respectively the first side plate (302), the second side plate (303), third side plate (304) and the
Four side plates (305), are sequentially connected end to end in turn, and surround rectangular-shaped；
The sandwich layer includes separator unit described in a frame and two or four in the frame, each partition list
Member includes a plate (306；And three bent plates (307,308,309 314)；315,316,317).
4. ventilating sound-proof structure according to claim 3, wherein
The sandwich layer includes two separator units, respectively first partition unit and second partition unit, first partition list
One end of multiple partitions of member is connect with first side plate, one end of multiple partitions of second partition unit and the third side
Plate connection；The other end of multiple partitions of the other end of multiple partitions of the first partition unit and the second partition unit
Relatively.
5. ventilating sound-proof structure according to claim 4, wherein
Each bent plate (307,308,309) includes the first extension (310), the second extension (311) and interconnecting piece
(312), which connect with first extension, and the other end is connect with the second extension；
First extension of the plate (306) and the bent plate (307,308,309), the second extension edge are parallel to second
The interconnecting piece of the direction extension of side plate, the 4th side plate, the bent plate extends along the direction for being parallel to the first side plate, third side plate,
Each bent plate is connect by the first extension with side plate.
6. ventilating sound-proof structure according to claim 5, wherein
Area of first extending part of each bent plate of first partition unit between the plate and the second side plate of first partition unit
Domain, the second extending part of each bent plate of first partition unit is in the plate of first partition unit and the plate of second partition unit
Between region；
Area of first extending part of each bent plate of second partition unit between the plate and the 4th side plate of second partition unit
Domain, the second extending part of each bent plate of second partition unit is in the plate of second partition unit and the plate of first partition unit
Between region；
By described the other end of the bent plate of the plate and two separator units of two separator units, in the cellular
The heart limits a space (313), and the operatic tunes runner passes through the space and first opening and the second open communication.
7. ventilating sound-proof structure according to claim 3, wherein
The sandwich layer includes four separator units, respectively first partition unit, second partition unit, third separator unit and the
Four separator units；
One end of multiple partitions of first partition unit is connect with first side plate, and the one of multiple partitions of second partition unit
End is connect with second side plate, and one end of multiple partitions of third separator unit is connect with the third side plate, the 4th partition
One end of multiple partitions of unit is connect with the 4th side plate；
The other end phase of the other end of multiple partitions of the first partition unit and multiple partitions of the third separator unit
It is right, the other end phase of the other end of multiple partitions of the second partition unit and multiple partitions of the 4th separator unit
It is right；
Four separator units limit a space at the cellular center, the operatic tunes runner by the space with it is described
First opening and the second open communication.
8. ventilating sound-proof structure according to claim 7, wherein
The bent plate (315,316,317) be L-type plate comprising an extension (318) and connect with an extension one
Interconnecting piece (319)；
The extension of the plate (314) and the L-type plate of first partition unit and third separator unit is along being parallel to the
The interconnecting piece edge of the L-type plate of the direction extension of two side plates, the 4th side plate, the first partition unit and third separator unit
It is parallel to the first side plate, the direction of third side plate extends；
The extension of the plate and the L-type plate of the second partition unit and the 4th separator unit edge is parallel to first
The interconnecting piece of the L-type plate of the direction extension of side plate, third side plate, the second partition unit and the 4th separator unit is along flat
Row extends in the direction of the second side plate, the 4th side plate.
9. ventilating sound-proof structure according to claim 2, wherein the frame, operatic tunes cross section of fluid channel, the first opening and the
The two rounded or polygons of opening.
10. ventilating sound-proof structure according to claim 1, wherein the thickness of the cellular is between 6~30mm；The
One, the thickness of second panel is between 0.2~3mm；The opening area of first, second panel is between 100~1000mm2It
Between；Cellular size is between 1650~10000mm2Between；Operatic tunes width of flow path Δ d is between 1~5mm；The wall of operatic tunes runner
Thickness is between 0.5~2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811265734.7A CN109243419B (en) | 2018-10-26 | 2018-10-26 | Ventilating sound insulation structure based on acoustic metamaterial technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811265734.7A CN109243419B (en) | 2018-10-26 | 2018-10-26 | Ventilating sound insulation structure based on acoustic metamaterial technology |
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| US11521589B2 (en) * | 2018-11-05 | 2022-12-06 | Yamaha Corporation | Sound absorption structure |
| CN115675317A (en) * | 2023-01-03 | 2023-02-03 | 质子汽车科技有限公司 | Vehicle with a steering wheel |
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