CN106639014B - Ventilation sound insulation hole based on helmholtz resonance chamber - Google Patents
Ventilation sound insulation hole based on helmholtz resonance chamber Download PDFInfo
- Publication number
- CN106639014B CN106639014B CN201710016499.9A CN201710016499A CN106639014B CN 106639014 B CN106639014 B CN 106639014B CN 201710016499 A CN201710016499 A CN 201710016499A CN 106639014 B CN106639014 B CN 106639014B
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- ventilation
- sound insulation
- hole
- resonance chamber
- cavity
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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 description 16
- 230000005540 biological transmission Effects 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 12
- 238000002310 reflectometry Methods 0.000 description 8
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000000034 method 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
- 230000008439 repair process Effects 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 present invention provides the ventilation sound insulation holes based on helmholtz resonance chamber, are related to field of noise control.The ventilation sound insulation hole based on helmholtz resonance chamber includes ventilation hole；Neck tube is arranged in around the ventilation hole and is connected with the ventilation hole；Cavity of arbitrary shape, preferably large volume rectangular enclosure are arranged in the outside of the ventilation hole and are separated by the neck tube and the ventilation hole, and the cavity is connected with the neck tube.The cavity will divulge information hole as rotation center, and angularly the period is rotatably arranged in the plane where the ventilation hole, while the sound wave incident end of cavity is connected with neck tube, which can form wider phonon-side bands, and realization had not only been divulged information but also the effect of sound insulation.The ventilation sound insulation porous material based on helmholtz resonance chamber is selected extensively, and preparation is simple, is easily assembled, is with a wide range of applications.
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 technique
Noise transmission and noise control are very important research contents.With the rapid development of our country's economy, traffic is made an uproar
Sound and construction noise etc. are increasingly severe, and noise brings extremely serious influence to indoor occupant.Present door, window or
It sound insulation or can only can only divulge information, can not accomplish that both sound insulation and ventilation take into account.
Attached drawing 1 gives traditional Ventilating wall schematic diagram, including ventilation hole 1 and bounds (wall) 2.Hole 1
Having a size of long 1m, wide 1m, thickness 0.1m, wall long 3m, wide 3m, thickness 0.1m.As wall upper opening, though such device
Ventilation is so achieved the purpose that, but noise is but difficult to completely cut off；If be not open on wall, although completely cut off noise, but
It cannot divulge information.Thus not only divulge information but also the effect of sound insulation proposes challenge to how realizing simultaneously.
Summary of the invention
It is common to solve it is an object of the present invention to provide the ventilation sound insulation hole based on helmholtz resonance chamber
Wall can not meet simultaneously not only divulges information but also the problem of sound insulation.
Particularly, the present invention provides a kind of ventilation sound insulation hole based on helmholtz resonance chamber is eliminated 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 separated by the neck tube and the ventilation hole, the cavity is connected with the neck tube,
To generate resonance with the sound wave that transmits in the ventilation shaft incident direction, realization completely eliminate at some frequencies with it is described
Sound wave in the corresponding transmission direction of incident direction.
Further, the cavity is using the ventilation hole as rotation center, and angularly the period is rotatably arranged described
In plane where ventilation hole, the ventilation sound insulation hole is ultimately formed.
Further, the cavity is arbitrary shape.
Further, the cavity is rectangle, is rotatably arranged in the plane where the ventilation hole with 90 ° of periods.
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 rigid boundary material side
Normal direction acoustic pressure in boundary is zero.
Further, the ventilation sound insulation hole is prepared using common plastics.
Ventilation sound insulation hole based on helmholtz resonance chamber of the invention, it is theoretical by classical lumped parameter, it calculates
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 repairs 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,
To be formed about one section of phonon-side bands (the volume size that the phonon forbidden bandwidth depends on cavity) in resonant frequency, reach
Significant soundproof effect.Periodic arrangement is several along longitudinal direction for the ventilation sound insulation hole by described based on helmholtz resonance chamber again, just
The sound insulation noise elimination effect of wider frequency can be achieved.In addition, the ventilation porous material selection is extensively, production is simple, low in cost, just
In assembly, it is with a wide range of applications.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Background technique and of the invention one is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter
A little specific embodiments.Identical appended drawing reference denotes same or similar part or part in attached drawing.Those skilled in the art
It should be understood that the drawings are not necessarily drawn to scale.In attached drawing：
Fig. 1 is traditional wall schematic diagram；
Fig. 2 is the ventilation sound insulation hole signal according to an embodiment of the invention based on big rectangle helmholtz resonance chamber
Figure；
Fig. 3 is the transmissivity of the ventilation sound insulation hole described in Fig. 2 based on big rectangle helmholtz resonance chamber, reflectivity with sound
The variation schematic diagram of wave frequency rate.
Fig. 4 is that the ventilation sound insulation hole in accordance with another embodiment of the present invention based on small rectangle helmholtz resonance chamber shows
It is intended to；
Fig. 5 is the transmissivity of the ventilation sound insulation hole described in Fig. 4 based on small rectangle helmholtz resonance chamber, reflectivity with sound
The variation schematic diagram of wave frequency rate.
Fig. 6 is that the ventilation sound insulation hole in accordance with another embodiment of the present invention based on triangle helmholtz resonance chamber shows
It is intended to；
Fig. 7 is the transmissivity of the ventilation sound insulation hole described in Fig. 6 based on triangle helmholtz resonance chamber, reflectivity with sound
The variation schematic diagram of wave frequency rate.
Each symbol is expressed as follows in Fig. 1：
1, hole, 2, bounds.
Each symbol is expressed as follows in Fig. 2-Fig. 7：
2, plastics wall,
3, ventilation hole,
4, the first neck tube, the 5, second neck tube, 6, third neck tube, the 7, the 4th neck tube,
8, the first big rectangular enclosure, 9, the second largest rectangular enclosure, 10, the third-largest rectangular enclosure, 11, the fourth-largest rectangle sky
Chamber,
12, the first small rectangular enclosure, the 13, second small rectangular enclosure, 14, the small rectangular enclosure of third, the 15, the 4th small rectangle are empty
Chamber,
16, the first triangular cavity, the 17, second triangular cavity, 18, third triangular cavity, the 19, the 4th triangle are empty
Chamber.
Specific embodiment
Fig. 2 is the ventilation sound insulation hole schematic diagram according to an embodiment of the invention based on helmholtz resonance chamber.Such as
Shown in Fig. 2, a kind of ventilation sound insulation hole based on helmholtz resonance chamber provided in this embodiment, for realizing not only divulge information but also every
The effect of sound, generality may include：Ventilation hole, neck tube and rectangular enclosure.Wherein hole 3 is 1m long, width 1m, thickness for ventilation
0.1m is set to structure centre；Neck tube, long 0.8m, wide 0.1m, thickness 0.08m, be arranged in ventilation hole 3 around and and ventilation hole
Hole 3 is connected；Big rectangular enclosure includes the first big rectangular enclosure 8, the second largest rectangular enclosure 9, the third-largest rectangular enclosure 10 and the 4th
Big rectangular enclosure 11, the first big rectangular enclosure 8 are connected with the first neck tube 4, the second largest rectangular enclosure 9, the third-largest rectangular enclosure
10 and the fourth-largest rectangular enclosure 11 be also connected respectively with the second neck tube 5, third neck tube 6 and the 4th neck tube 7, form half and seal
Close structure, to generate resonance with the sound wave that transmits in described hole incident direction, realization completely eliminate at some frequencies with
The effect of sound wave in the corresponding transmission direction of the incident direction.
Big rectangular enclosure described in Fig. 2 will divulge information hole 3 as rotation center, divulged information with 90 ° of rotation angle periodic arrangements
In plane where hole 3, the ventilation sound insulation hole is ultimately formed.The present embodiment uses long 1.9m, wide 0.8m, thickness
The big rectangular enclosure of 0.08m is simulated.
Fig. 3 is ventilation sound insulation hole based on big rectangle helmholtz resonance chamber described in Fig. 2 via the radially period of hole 3
After connecting ten groups, the transmissivity simulated, reflectivity with frequency of sound wave variation schematic diagram.As shown in figure 3, black triangle
Dotted line indicates reflectivity with the variation diagram of frequency of sound wave, and grey star point indicates transmissivity with the variation diagram of frequency of sound wave, transmission
Rate smaller (reflectivity is bigger) just illustrates the more of noise loss, 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 range, reaches almost ideal noise elimination effect.
Fig. 4 is that the ventilation sound insulation hole in accordance with another embodiment of the present invention based on small rectangle helmholtz resonance chamber shows
It is intended to, the present embodiment uses long 0.95m, and the small rectangular enclosure of wide 0.4m, thickness 0.08m are simulated, and it is small to specifically include first
Rectangular enclosure 12, the second small rectangular enclosure 13, the small rectangular enclosure 14 of third and the 4th small rectangular enclosure 15, remaining structure with figure
It is identical in 2, therefore just repeat no more in the present embodiment.Fig. 5 is logical based on small rectangle helmholtz resonance chamber described in Fig. 4
Wind sound insulation hole connect ten groups after transmissivity, reflectivity with frequency of sound wave variation schematic diagram.As shown in figure 5, transmissivity exists
It is zero in 150Hz~175Hz wide frequency range, the noise elimination effect for reaching almost ideal is compared with the effect of Fig. 3 to 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 use long 1.9m, wide 0.4m, the triangular cavity of thickness 0.08m
Connection is simulated, and the first triangular cavity 16, the second triangular cavity 17, third triangular cavity 18 and the 4th are specifically included
Triangular cavity 19, the triangular cavity volume is equal with the small 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 logical based on triangle helmholtz resonance chamber described in Fig. 6
Wind sound insulation hole connect ten groups after transmissivity, reflectivity with frequency of sound wave variation schematic diagram.As shown in fig. 7, transmissivity exists
It is zero in 128Hz~140Hz wide frequency range, reaches almost ideal noise elimination effect, shows for the cavity of the arbitrary shape knot
Structure has certain noise cancellation effect.
Single unit system is prepared and can be printed by 3D printer according to model 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 ventilation hole
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 uses ABS plastic, from a wealth of sources, and production is simple, low in cost, convenient for assembly.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (9)
1. a kind of ventilation sound insulation hole based on helmholtz resonance chamber is eliminated 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 separated by the neck tube and the ventilation hole, the cavity and
The neck tube is connected, and to generate resonance with the sound wave transmitted in the ventilation shaft incident direction, realizes in certain frequencies
Place completely eliminates the sound wave in transmission direction corresponding with the incident direction.
2. the ventilation sound insulation hole according to claim 1 based on helmholtz resonance chamber, the cavity is by the ventilation
Hole is as rotation center, and angularly the period is rotatably arranged in the plane where the ventilation hole, ultimately forms described logical
Wind sound insulation hole.
3. the ventilation sound insulation hole according to claim 2 based on helmholtz resonance chamber, which is characterized in that the cavity
For arbitrary shape.
4. the ventilation sound insulation hole according to claim 2 based on helmholtz resonance chamber, which is characterized in that the cavity
For rectangle, it is rotatably arranged in the plane where the ventilation hole with 90 ° of periods.
5. the ventilation sound insulation hole described in any one of -4 based on helmholtz resonance chamber, feature exist according to claim 1
In the sound wave incident end of the cavity is connected with the neck tube.
6. the ventilation sound insulation hole described in any one of -4 based on helmholtz resonance chamber, feature exist according to claim 1
In the cavity is semi-closed structure.
7. the ventilation sound insulation hole described in any one of -4 based on helmholtz resonance chamber, feature exist according to claim 1
In the ventilation sound insulation hole is prepared using bounds material.
8. the ventilation sound insulation hole according to claim 7 based on helmholtz resonance chamber, which is characterized 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 according to claim 8 based on helmholtz resonance chamber, which is characterized in that the ventilation
Sound insulation hole is prepared using common plastics.
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 CN106639014A (en) | 2017-05-10 |
| CN106639014B true CN106639014B (en) | 2018-11-23 |
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| 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 |
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Families Citing this family (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 |
| 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 |
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 |
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| CN106639014A (en) | 2017-05-10 |
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