CN106639014A - Ventilation and sound insulation hole based on Helmholtz resonance cavity - Google Patents
Ventilation and sound insulation hole based on Helmholtz resonance cavity Download PDFInfo
- Publication number
- CN106639014A CN106639014A CN201710016499.9A CN201710016499A CN106639014A CN 106639014 A CN106639014 A CN 106639014A CN 201710016499 A CN201710016499 A CN 201710016499A CN 106639014 A CN106639014 A CN 106639014A
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- China
- Prior art keywords
- ventilation
- sound insulation
- hole
- helmholtz resonance
- insulation hole
- 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.)
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- 238000009423 ventilation Methods 0.000 title claims abstract description 70
- 238000009413 insulation Methods 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 238000002310 reflectometry Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8209—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only sound absorbing devices
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a ventilation and sound insulation hole based on a Helmholtz resonance cavity and relates to the field of noise control. The ventilation and sound insulation hole based on the Helmholtz resonance cavity comprises a ventilation hole, neck tubes and cavities in any shapes, wherein the neck tubes are arranged around the ventilation hole and connected with the ventilation hole; and the large-size rectangular cavities are selected preferably to be arranged on the outer side of the ventilation hole and separated from the ventilation hole through the neck tubes, and the cavities communicate with the neck tubes. The ventilation hole serves as a rotation center of the cavities, and the cavities are rotationally arranged in the plane where the ventilation hole is located in equal-angle and equal-cycle modes; and meanwhile, sound wave incoming ends of the cavities communicate with the neck tubes, the structure can form wide phonon band gaps, and the ventilation effect and the sound insulation effect are both achieved. The ventilation and sound insulation hole based on the Helmholtz resonance cavity is extensive in material selection source and easy to manufacture and assemble and has wide application prospects.
Description
Technical field
The present invention relates to field of noise control, more particularly to a kind of ventilation sound insulation hole based on helmholtz resonance chamber
Hole.
Background technology
Noise transmission and Noise measarement are very important research contents.With the fast development of China's economy, traffic is made an uproar
Sound and construction noise etc. are increasingly severe, and noise brings extremely serious impact to indoor occupant.Present door, window, or
Can only sound insulation, or can only divulge information, it is impossible to accomplish sound insulation and ventilation both take into account.
Accompanying drawing 1 gives traditional Ventilating wall schematic diagram, including ventilation hole 1 and bounds (body of wall) 2.Hole 1
Size be long 1m, wide 1m, thickness 0.1m, the long 3m of body of wall, wide 3m, thickness 0.1m.As wall upper shed, though such device
The purpose of ventilation has so been reached, but noise is but difficult to completely cut off；If without opening on wall, although completely cut off noise, but but
Can not divulge information.Thus to how simultaneously to realize not only divulging information but also the effect of sound insulation proposes challenge.
The content of the invention
It is an object of the present invention to provide based on the ventilation sound insulation hole in helmholtz resonance chamber, it is common to solve
Body of wall cannot meet simultaneously not only divulges information but also the problem of sound insulation.
Especially, the invention provides a kind of ventilation sound insulation hole based on helmholtz resonance chamber, eliminates for noise,
Including：Ventilation hole；Neck tube, is arranged in around the ventilation hole and is connected with the ventilation hole；And cavity, it is arranged in
It is described ventilation hole outside and by the neck tube with it is described ventilation hole separate, the cavity is connected with the neck tube,
To produce resonance with the sound wave that transmits in the ventilation shaft incident direction, realization be completely eliminated at some frequencies with it is described
Sound wave in the corresponding transmission direction of incident direction.
Further, using the ventilation hole as pivot, angularly cycle rotation is arranged in described the cavity
In the plane that ventilation hole is located, the ventilation sound insulation hole is ultimately formed.
Further, the cavity is arbitrary shape.
Further, the cavity is rectangle, is arranged in the plane that the ventilation hole is located with 90 ° of cycle rotations.
Further, the sound wave incident end of the cavity is connected with the neck tube.
Further, the cavity is semi-closed structure.
Further, the ventilation sound insulation hole is prepared using bounds material.
Further, the bounds material refers to rigid boundary material, and incident acoustic wave is on the rigid boundary material side
Normal direction acoustic pressure in boundary is zero.
Further, the ventilation sound insulation hole is prepared using common plasticses.
The ventilation sound insulation hole based on helmholtz resonance chamber of the present invention, it is theoretical by classical lumped parameter, calculate
The resonant frequency of the cavity:
In formula：c0For the velocity of sound；V is cavity volume；L is neck tube length；S is neck tube pipe cross-sectional area；δ is repaiied for acoustic end
Just.After introducing a series of cavity structure of swing circle arrangements in the propagation direction, acoustic resonance can be formed under a certain frequency,
So as to be formed about one section of phonon-side bands (the phonon energy gap depends on the volume size of cavity) in resonant frequency, reach
Significant soundproof effect.It is again that the ventilation sound insulation hole based on helmholtz resonance chamber is some along longitudinal periodic arrangement, just
The sound insulation soundproof effect of achievable wider frequency.Additionally, the ventilation porous material selects extensive, make simple, it is with low cost, just
In assembling, it is with a wide range of applications.
According to the detailed description below in conjunction with accompanying drawing to the specific embodiment of the invention, those skilled in the art will be brighter
Above-mentioned and other purposes, the advantages and features of the present invention.
Description of the drawings
Describe the one of background technology and the present invention in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter
A little specific embodiments.Identical reference denotes same or similar part or part in accompanying drawing.Those skilled in the art
It should be understood that what these accompanying drawings were not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is traditional body of wall schematic diagram；
Fig. 2 is that the ventilation sound insulation hole based on big rectangle helmholtz resonance chamber according to an embodiment of the invention is illustrated
Figure；
Fig. 3 is transmissivity, the reflectivity of the ventilation sound insulation hole described in Fig. 2 based on big rectangle helmholtz resonance chamber with sound
The change schematic diagram of wave frequency rate,.
Fig. 4 is that the ventilation sound insulation hole based on little rectangle helmholtz resonance chamber in accordance with another embodiment of the present invention shows
It is intended to；
Fig. 5 is transmissivity, the reflectivity of the ventilation sound insulation hole described in Fig. 4 based on little rectangle helmholtz resonance chamber with sound
The change schematic diagram of wave frequency rate,.
Fig. 6 is that the ventilation sound insulation hole based on triangle helmholtz resonance chamber in accordance with another embodiment of the present invention shows
It is intended to；
Fig. 7 is transmissivity, the reflectivity of the ventilation sound insulation hole described in Fig. 6 based on triangle helmholtz resonance chamber with sound
The change schematic diagram of wave frequency rate,.
Each symbol is expressed as follows in Fig. 1：
1st, hole, 2, bounds.
Each symbol is expressed as follows in Fig. 2-Fig. 7：
2nd, plastics body of wall,
3rd, ventilation hole,
4th, the first neck tube, the 5, second neck tube, the 6, the 3rd neck tube, the 7, the 4th neck tube,
8th, the first big rectangular enclosure, 9, second largest rectangular enclosure, 10, the third-largest rectangular enclosure, 11, the fourth-largest rectangle it is empty
Chamber,
12nd, the first little rectangular enclosure, the 13, second little rectangular enclosure, the 14, the 3rd little rectangular enclosure, the 15, the 4th little rectangle is empty
Chamber,
16th, the first triangular cavity, the 17, second triangular cavity, the 18, the 3rd triangular cavity, the 19, the 4th triangle is empty
Chamber.
Specific embodiment
Fig. 2 is the ventilation sound insulation hole schematic diagram based on helmholtz resonance chamber according to an embodiment of the invention.Such as
Shown in Fig. 2, the present embodiment provide a kind of ventilation sound insulation hole based on helmholtz resonance chamber, for realize not only divulged information but also every
The effect of sound, generality may include：Ventilation hole, neck tube and rectangular enclosure.Wherein divulge information the long 1m of hole 3, width 1m, thickness
0.1m, located at structure centre；Neck tube, long 0.8m, wide 0.1m, thickness 0.08m are arranged in around ventilation hole 3 and and air vent
Hole 3 is connected；Big rectangular enclosure includes the first big rectangular enclosure 8, second largest rectangular enclosure 9, the third-largest rectangular enclosure 10 and the 4th
Big rectangular enclosure 11, the first big rectangular enclosure 8 is connected with the first neck tube 4, second largest rectangular enclosure 9, the third-largest rectangular enclosure
10 and the fourth-largest rectangular enclosure 11 be also connected with the second neck tube 5, the 3rd neck tube 6 and the 4th neck tube 7 respectively, form half and seal
Close structure, to produce resonance with the sound wave that transmits in described hole incident direction, realization be completely eliminated at some frequencies with
The effect of the sound wave in the corresponding transmission direction of the incident direction.
Big rectangular enclosure described in Fig. 2 will divulge information hole 3 as pivot, with 90 ° of anglec of rotation periodic arrangements in ventilation
In the plane that hole 3 is located, the ventilation sound insulation hole is ultimately formed.The present embodiment adopts long 1.9m, wide 0.8m, thickness
The big rectangular enclosure of 0.08m is simulated.
Fig. 3 is ventilation sound insulation hole described in Fig. 2 based on big rectangle helmholtz resonance chamber via the radially cycle of hole 3
After connecting ten groups, simulate obtain transmissivity, reflectivity with frequency of sound wave change schematic diagram.As shown in figure 3, black triangle
Dotted line represents variation diagram of the reflectivity with frequency of sound wave, and grey star point represents variation diagram of the transmissivity with frequency of sound wave, transmission
It is more that rate less (reflectivity is bigger) just illustrates that noise is lost, and the effect that noise is eliminated is better.In Fig. 3, transmissivity exists
It is zero in 53Hz～84Hz and 106Hz～130Hz wide frequency ranges, reaches almost ideal soundproof effect.
Fig. 4 is that the ventilation sound insulation hole based on little rectangle helmholtz resonance chamber in accordance with another embodiment of the present invention shows
It is intended to, the present embodiment adopts the little rectangular enclosure of long 0.95m, wide 0.4m, thickness 0.08m to be simulated, and specifically includes first little
Rectangular enclosure 12, the second little rectangular enclosure 13, the 3rd little rectangular enclosure 14 and the 4th little rectangular enclosure 15, remaining structure with figure
It is identical in 2, therefore just repeat no more in the present embodiment.Fig. 5 is based on the logical of little rectangle helmholtz resonance chamber described in Fig. 4
Wind sound insulation hole connects the change schematic diagram of the transmissivity after ten groups, reflectivity with frequency of sound wave.As shown in figure 5, transmissivity exists
It is zero in 150Hz～175Hz wide frequency ranges, reaches almost ideal soundproof effect, compares with the effect of Fig. 3 and decrease, table
The identical cavity volume of bright shape is bigger, and noise cancellation effect is better.
In addition the cavity is arbitrary shape, and Fig. 6 is in accordance with another embodiment of the present invention based on triangle Hai Muhuo
The hereby ventilation sound insulation hole schematic diagram of resonant cavity, the present embodiment adopts long 1.9m, wide 0.4m, the triangular cavity of thickness 0.08m
Connection is simulated, and specifically includes the first triangular cavity 16, the second triangular cavity 17, the 3rd triangular cavity 18 and the 4th
Triangular cavity 19, the triangular cavity volume is equal with the little rectangular enclosure volume of Fig. 4, remaining structure with Fig. 2 or Fig. 4
In it is identical, therefore just repeat no more in the present embodiment.Fig. 7 is based on the logical of triangle helmholtz resonance chamber described in Fig. 6
Wind sound insulation hole connects the change schematic diagram of the transmissivity after ten groups, reflectivity with frequency of sound wave.As shown in fig. 7, transmissivity exists
It is zero in 128Hz～140Hz wide frequency ranges, reaches almost ideal soundproof effect, shows for the cavity of the arbitrary shape knot
Structure has certain noise cancellation effect.
Single unit system is prepared and can printed according to model by 3D printer using bounds material.The bounds material
Material refers to rigid boundary material, and normal direction acoustic pressure of the incident acoustic wave in the rigid boundary material boundary is zero.The air vent
Hole, the neck tube and the cavity are prepared using same bounds material.And the bounds material in the present embodiment is
Rigid boundary material adopts ABS plastic, and wide material sources make simple, with low cost, are easy to assembling.
So far, although those skilled in the art will appreciate that detailed herein illustrate and describe multiple showing for the present invention
Example property embodiment, but, without departing from the spirit and scope of the present invention, still can be direct according to present disclosure
It is determined that or deriving many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all these other variations or modifications.
Claims (9)
1. a kind of ventilation sound insulation hole based on helmholtz resonance chamber, eliminates for noise, including：
Ventilation hole；
Neck tube, is arranged in around the ventilation hole and is connected with the ventilation hole；And
Cavity, be arranged in it is described ventilation hole outside and by the neck tube with it is described ventilation hole separate, the cavity with
The neck tube is connected, and to produce resonance with the sound wave that transmits in the ventilation shaft incident direction, realizes in some frequencies
Place is completely eliminated the sound wave in transmission direction corresponding with the incident direction.
2. the ventilation sound insulation hole based on helmholtz resonance chamber according to claim 1, the cavity is by the ventilation
Hole is arranged in the plane that the ventilation hole is located, ultimately forms described logical as pivot, angularly cycle rotation
Wind sound insulation hole.
3. the ventilation sound insulation hole based on helmholtz resonance chamber according to claim 2, it is characterised in that the cavity
For arbitrary shape.
4. the ventilation sound insulation hole based on helmholtz resonance chamber according to claim 2, it is characterised in that the cavity
For rectangle, it is arranged in the plane that the ventilation hole is located with 90 ° of cycle rotations.
5. the ventilation sound insulation hole based on helmholtz resonance chamber according to any one of claim 1-4, its feature exists
In the sound wave incident end of the cavity is connected with the neck tube.
6. the ventilation sound insulation hole based on helmholtz resonance chamber according to any one of claim 1-5, its feature exists
In the cavity is semi-closed structure.
7. the ventilation sound insulation hole based on helmholtz resonance chamber according to any one of claim 1-5, its feature exists
In the ventilation sound insulation hole is prepared using bounds material.
8. the ventilation sound insulation hole based on helmholtz resonance chamber according to claim 7, it is characterised in that the hard-edge
Boundary's material refers to rigid boundary material, and normal direction acoustic pressure of the incident acoustic wave in the rigid boundary material boundary is zero.
9. the ventilation sound insulation hole based on helmholtz resonance chamber according to claim 8, it is characterised in that the ventilation
Sound insulation hole is prepared using common plasticses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016499.9A CN106639014B (en) | 2017-01-10 | 2017-01-10 | Ventilation sound insulation hole based on helmholtz resonance chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016499.9A CN106639014B (en) | 2017-01-10 | 2017-01-10 | Ventilation sound insulation hole based on helmholtz resonance chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106639014A true CN106639014A (en) | 2017-05-10 |
| CN106639014B CN106639014B (en) | 2018-11-23 |
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ID=58843611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710016499.9A Active CN106639014B (en) | 2017-01-10 | 2017-01-10 | Ventilation sound insulation hole based on helmholtz resonance chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106639014B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115294950A (en) * | 2022-08-01 | 2022-11-04 | 天津科技大学 | Sound insulation and ventilation structure based on Helmholtz resonance principle |
| CN115874733A (en) * | 2022-12-15 | 2023-03-31 | 南京林业大学 | Ventilation sound insulation wall with autonomous frequency modulation function and autonomous frequency modulation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3032369A1 (en) * | 1980-08-28 | 1982-03-11 | Fa. J. Eberspächer, 7300 Esslingen | Sound-proofed ventilation air lock housing - has modulated Helmholtz resonator chambers in sides and cover |
| CN102022013A (en) * | 2010-11-05 | 2011-04-20 | 江苏省电力设计院 | Noise reduction structure of main noise resources of urban indoor substation |
| CN103890288A (en) * | 2011-10-20 | 2014-06-25 | 皇家飞利浦有限公司 | An optical acoustic panel |
| CN205783635U (en) * | 2016-06-28 | 2016-12-07 | 中国华电科工集团有限公司 | A kind of sound-absorbing sand-proof air grille |
-
2017
- 2017-01-10 CN CN201710016499.9A patent/CN106639014B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3032369A1 (en) * | 1980-08-28 | 1982-03-11 | Fa. J. Eberspächer, 7300 Esslingen | Sound-proofed ventilation air lock housing - has modulated Helmholtz resonator chambers in sides and cover |
| CN102022013A (en) * | 2010-11-05 | 2011-04-20 | 江苏省电力设计院 | Noise reduction structure of main noise resources of urban indoor substation |
| CN103890288A (en) * | 2011-10-20 | 2014-06-25 | 皇家飞利浦有限公司 | An optical acoustic panel |
| CN205783635U (en) * | 2016-06-28 | 2016-12-07 | 中国华电科工集团有限公司 | A kind of sound-absorbing sand-proof air grille |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115294950A (en) * | 2022-08-01 | 2022-11-04 | 天津科技大学 | Sound insulation and ventilation structure based on Helmholtz resonance principle |
| CN115874733A (en) * | 2022-12-15 | 2023-03-31 | 南京林业大学 | Ventilation sound insulation wall with autonomous frequency modulation function and autonomous frequency modulation method |
| CN115874733B (en) * | 2022-12-15 | 2023-06-06 | 南京林业大学 | Ventilating sound insulation wall with autonomous frequency modulation function and autonomous frequency modulation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106639014B (en) | 2018-11-23 |
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