CN1125219C - Sound wave phase position change apparatus and sound insulation wall - Google Patents
Sound wave phase position change apparatus and sound insulation wall Download PDFInfo
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- CN1125219C CN1125219C CN96122863A CN96122863A CN1125219C CN 1125219 C CN1125219 C CN 1125219C CN 96122863 A CN96122863 A CN 96122863A CN 96122863 A CN96122863 A CN 96122863A CN 1125219 C CN1125219 C CN 1125219C
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- porous member
- position change
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- 238000009413 insulation Methods 0.000 title claims description 46
- 239000000463 material Substances 0.000 claims description 20
- 229920003023 plastic Polymers 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 30
- 238000010586 diagram Methods 0.000 description 12
- 238000013016 damping Methods 0.000 description 8
- 239000004925 Acrylic resin Substances 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 229920005668 polycarbonate resin Polymers 0.000 description 3
- 239000004431 polycarbonate resin Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Classifications
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- 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
- E04B1/84—Sound-absorbing elements
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0041—Free-standing grates
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
- E01F8/0076—Cellular, e.g. as wall facing
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0094—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic constructions for generation of phase shifting
-
- 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
- E04B1/8227—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 screens ; Arrangements of sound-absorbing elements, e.g. baffles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Multimedia (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
An element is provided for varying the phase of acoustic waves for use in a sound insulating wall. The element comprises a porous member (15) supported around a sound insulating plate assembly (14). The plate assembly (14) comprises a plurality of sound insulating plates (12, 13) which form a plurality of independent spaces (16) therebetween. The sound insulating wall comprises a sound insulating panel (11) provided to stand in the vicinity of a sound source. The phase changing element is mounted along an upper end portion of the sound insulating panel.
Description
The present invention relates to be arranged at sound source around or on the propagation path, the sound wave phase position change apparatus that makes the phase place of sound wave advance or postpone, and the sound-proof wall that utilizes this sound wave phase position change apparatus.
Figure 23 represents for example key diagram of the existing sound-proof wall shown in the special public clear 51-46969 communique of Japan Patent.In the drawings, on the sound-proof wall 1, damping material 2 is housed along its upper end.The shape of damping material 2 and mounting structure have all kinds shown in A～G of Figure 23.
Figure 24 represents that Japan Patent spy for example opens the key diagram of other examples of the existing sound-proof wall shown in the clear 52-91514 communique.In the drawings, on the sound-proof wall 1, non-penetrator 3 is housed along its upper end.Non-penetrator 3 has the structure that stops that sound wave penetrates.The shape of non-penetrator 3 and mounting structure have all kinds shown in A～H of Figure 24.
Figure 25 is the key diagram of effect of the sound-proof wall of expression Figure 23.Send the sound wave 5a of direct impact damping material 2 and absorbed by damping material 2 from sound source 4 by the sound wave that damping material 2 is impacted in sound-proof wall 1 reflection back.Thereby, cross sound-proof wall and have only sound wave 5c by damping material 2 top diffraction to extraradial sound wave, cross sound-proof wall and the sound reduction of going.
Figure 26 is the key diagram of effect of the sound-proof wall of expression Figure 24.Directly impact the sound wave 5d of non-penetrator 3 and impact the sound wave 5e of non-penetrator 3 respectively by non-penetrator 3 reflections by sound-proof wall 1 reflection back.How many phase places of sound wave 5d, 5e because the difference of path, has some deviations with respect to the phase place of the sound wave 5c by non-penetrator 3 diffraction.Therefore, sound wave 5d, 5e and sound wave 5c interfere with each other, thereby these two kinds of sound waves all weaken, and cross sound-proof wall and the sound reduction of going.
But, use the existing sound-proof wall of described such damping material 2, can not weaken the sound wave 5c of diffraction on the damping material 2.Use the sound-proof wall of non-penetrator 3, because just the path length difference that causes of shape causes phase deviation, it is little to interfere with each other the sound reduction effect that causes.
The present invention makes in order to solve described problem, and purpose is to obtain to make the phase deviation of the sound wave of incident to strengthen, thereby can improve the sound wave phase position change apparatus and the sound-proof wall of the effect of the sound reduction that sound wave interference causes with this.
The related sound wave phase position change apparatus of invention of the present invention the 1st aspect, possess: the porous member that constitutes by porous material, and constitute by polylith sound insulation sheet, to support porous member, and it is different to form volume at the back of porous member, independently the sound insulation sheet assembly of a plurality of spatial portions.
The related sound wave phase position change apparatus of invention of the present invention the 2nd aspect uses the porous member that the deposited porous material that forms of many plastic grain parts is constituted.
The related sound wave phase position change apparatus of invention of the present invention the 3rd aspect exposes outside sound insulation sheet and porous member and engages, and forms rib portion.
The related sound wave phase position change apparatus of invention of the present invention the 4th aspect uses tabular porous member, and its thickness is changed.
The related sound wave phase position change apparatus of invention of the present invention the 5th aspect changes the thickness of porous member with the way that changes laminated number.
The related sound wave phase position change apparatus of invention of the present invention the 6th aspect, thereby the tabular porous member that uses section shape bending sound wave incident area to increase.
The related sound wave phase position change apparatus of invention of the present invention the 7th aspect makes the profile size of porous member section change along its length direction, thereby increases the sound wave incident area of porous member.
The related sound wave phase position change apparatus of invention of the present invention the 8th aspect, the sound insulation sheet that constitutes the bottom of spatial portion tilts with respect to horizontal direction, and the end on low one side connects porous member.
The related sound wave phase position change apparatus of invention of the present invention the 9th aspect, the material of porous member and sound insulation sheet assembly uses light transmissive material.
The related sound-proof wall of invention of the present invention the 10th aspect possesses: erect and be arranged at sound source sound insulating panel nearby, and have porous member that porous material constitutes and install along the upper end of sound insulating panel, constitute by some sound insulation sheets simultaneously, to support porous member, and it is different to form volume at the back of porous member, independently the sound wave phase position change apparatus of the sound insulation sheet assembly of a plurality of spatial portions.
Fig. 1 is the sectional drawing of sound-proof wall key component with sound wave phase position change apparatus of embodiments of the invention 1.
Fig. 2 is the key diagram of effect of the sound-proof wall of presentation graphs 1.
Fig. 3 is to the graph of a relation of the example of phase difference θ between the incident acoustic wave of frequency f and the reflective sound wave in presentation graphs 1 sound wave phase position change apparatus.
Fig. 4 is the sectional drawing of sound-proof wall key component with sound wave phase position change apparatus of embodiments of the invention 2.
Fig. 5 is the key diagram of effect of the sound-proof wall of presentation graphs 4.
Fig. 6 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 3.
Fig. 7 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 4.
Fig. 8 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 5.
Fig. 9 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 6.
Figure 10 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 7.
Figure 11 is the key component sectional drawing of the variation of expression Figure 10.
Figure 12 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 8.
Figure 13 is the key component sectional drawing of the variation of expression Figure 12.
Figure 14 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 9.
Figure 15 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 10.
Figure 16 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 11.
Figure 17 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 12.
Figure 18 is the plan view of formation of the sound wave phase position change apparatus of expression embodiments of the invention 13.
Figure 19 is the plan view of the variation of expression Figure 18.
Figure 20 is the plan view of another variation of expression Figure 18.
Figure 21 is the approximate three-dimensional map of the sound wave phase position change apparatus of embodiments of the invention 14.
Figure 22 is the approximate three-dimensional map of the variation of expression Figure 21.
Figure 23 is the key diagram of an example of the existing sound-proof wall of expression.
Figure 24 is the key diagram of another example of the existing sound-proof wall of expression.
Figure 25 is the key diagram of effect of the sound-proof wall of expression Figure 23.
Figure 26 is the key diagram of effect of the sound-proof wall of expression Figure 24.
Below embodiments of the invention are illustrated.
Embodiment 1
Fig. 1 is the sectional drawing of sound-proof wall key component with sound wave phase position change apparatus of embodiments of the invention 1.Fig. 2 is the key diagram of effect of the sound-proof wall of presentation graphs 1.
In the drawings, sound insulating panel 11 is erect the side of the road that sound sources (or noise source) 4 such as being arranged at automobile for example passes through.At the upper end of sound insulating panel 11 vertical fixing the 1st sound insulation sheet 12.At some the 2nd sound insulation sheets 13 of the both sides horizontal fixed of the 1st sound insulation sheet 12.The the 1st and the 2nd sound insulation sheet 12,13 is made of for example iron plate and plastic plate.And constitute sound insulation sheet assembly 14 by the 1st and the 2nd sound insulation sheet 12,13.
Outer part at sound insulation sheet assembly 14 is provided with porous member 15 cylindraceous.Porous member 15 extends along the length direction of sound insulating panel 11.Form at the back of porous member 15 again volume different, spatial portion 16 independently.The sound wave phase position change apparatus 17 of this embodiment 1 has the sound insulation sheet assembly 14 of porous member 15 and double as reinforcing rib.And this sound wave phase position change apparatus 17 and sound insulating panel 11 constitute the sound-proof wall of this embodiment 1.
The material of porous member can use plastics, pottery or foaming metal etc.Using under the situation of plastics for example, can use the method that plastic grain is partly heated deposited manufacturing porous member 15.Such method is for example having narration Japanese patent laid-open 2-289333 number.And plastic material can use for example acrylic resin, acrylic resin, vinyl chloride resin, ABS resin or polycarbonate resin etc.Employing makes the deposited method of plastic grain, can be shaped with metal die at an easy rate to make the porous member of desirable shape.
Below its action is illustrated.In Fig. 2, be directly incident on the sound wave 18 of sound wave phase position change apparatus 17 and incide the sound wave 19 of sound wave phase position change apparatus 17 by sound insulating panel 11 reflection, enter spatial portion 16 by porous member 15, be configured sound insulation sheet 12,13 reflections of the wall portion of spatial portion 16.Then, outwards penetrate from sound wave phase position change apparatus 17 by porous member 15.
Here, after sound wave 18 was injected sound wave phase position change apparatus 17 with incident angle β, when penetrating as sound wave 18a, the standard acoustic impedance Z of sound wave phase position change apparatus 17 can represent with following formula:
Z＝ρa/cos(β)×(Pi+Pr)/(Pi-Pr)
In the formula, ρ a (ρ is the density of air, and a is airborne velocity of sound) is the characteristic impedance of air, and Pi is the acoustic pressure of incident acoustic wave 18, and Pr is the acoustic pressure of reflective sound wave (from the sound wave of sound wave phase position change apparatus 17 ejaculations) 18a.
According to following formula, the pressure reflection ratio R of sound wave phase position change apparatus 17 can be expressed as:
R＝Pr/Pi＝(Zcos(β)-ρa)/(Zcos(β)+ρa)。
Again, according to this formula, the phase difference θ of incident acoustic wave 18 and reflective sound wave 18a is expressed as:
θ＝arg(R)
Again, the porous member 15 of sound wave phase position change apparatus 17, its sound characteristics comprise acoustic mass m and acoustic resistance r, and the sound characteristics that spatial portion 16 possesses then comprises acoustic capacitance c, and therefore, the standard acoustic impedance Z of sound wave phase position change apparatus 17 is expressed as during for f in frequency:
Z＝r+j2πfm+1/j2πfc
Wherein, j
2=-1
As mentioned above, the phase difference θ of incident acoustic wave 18 and reflective sound wave 18a changes with standard acoustic impedance Z.Adopt the sound wave phase position change apparatus 17 of present embodiment 1, then can control this impedance Z, phase difference can be changed.Specifically, by means of the thickness of controlling porous member 15 and porosity etc. acoustic mass m and acoustic resistance r are controlled respectively exactly, acoustic capacitance c is controlled, can obtain desirable phase characteristic by means of the volume of control spatial portion 6.By means of the mutual deposited degree of control plastic grain, can control porosity at an easy rate.
Fig. 3 is to the graph of a relation of the example of phase difference θ between the incident acoustic wave 18 of frequency f and the reflective sound wave 18a in the expression sound wave phase position change apparatus 17.In the drawings, phase difference θ is that 180 degree or-180 degree are that expression incident acoustic wave 18 anti-phase backs reflect away as reflective sound wave 18a.Like this, be that reflective sound wave 18a is anti-phase with the sound wave 20 of diffraction on sound wave phase position change apparatus 17 under the situation of 180 degree or-180 degree at phase difference θ, therefore, both sides cancel out each other, and sound wave is decay significantly generally.
As mentioned above, adopt the sound wave phase position change apparatus 17 of embodiment 1, can make the phase deviation of incident acoustic wave big, thereby, can improve the effect that weakens sound wave by means of the mutual interference of sound wave.And, at the back of porous member 15, exist volume different, a plurality of spatial portions 16 independently, therefore can be suitable for the multiple phase characteristic of different frequency respectively, can obtain the sound wave of big frequency range and subtract the audio fruit preferably.
Because porous member 15 makes the deposited member that forms of plastic grain part, can make all different shapes at an easy rate, and be convenient to adjust porosity again.
Moreover the material of sound insulation sheet assembly 14 and porous member 15 uses for example transparent light transmissive materials such as acrylic resin, vinyl chloride resin, ABS resin or polycarbonate resin, thereby can prevent deepening on every side when using as sound-proof wall.
Embodiment 2
Fig. 4 is the sectional drawing of sound-proof wall key component with sound wave phase position change apparatus of the embodiment of the invention 2.Fig. 5 is the key diagram of effect of the sound-proof wall of presentation graphs 4.At the foregoing description 1, the section shape of sound wave phase position change apparatus 17 is taken as circle, and at present embodiment 2, uses section shape to be roughly semicircular tabular sound wave phase position change apparatus 21.Be exposed to the 2nd sound insulation sheet 13a and the porous member 15 joint formation rib portions 22 of outside foot again.Other formations are identical with the foregoing description 1.
Below its action is illustrated.Be directly incident on the sound wave 18 of sound wave phase position change apparatus 21, and the foregoing description 1: the same its phase place is offset.And by the sound wave 23 of sound insulating panel 11 reflection back by rib portion 22 because the effect of the phase place variation effect that the shape of rib portion 22 causes is offset for example 180 degree.Like this, sound wave 18a, the 23a of phase deviation and by the sound wave 20 of sound wave phase position change apparatus 21 top diffraction cancel out each other, totally being decayed of sound wave.
Such sound wave phase position change apparatus 21 is compared for circular device with section shown in Figure 1, integral miniaturization, it is also easy to make simultaneously.And, also can obtain the phase place variation effect by the shape of this rib portion 22 because rib portion 22 is set.Again because rib portion 22 is positioned at the both sides of sound wave phase position change apparatus 21, no matter the position of sound source 4 can both be obtained the effect that weakens sound wave in which side of sound wave phase position change apparatus 21.
Fig. 6 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 3.In this embodiment, the section shape of sound wave phase position change apparatus 24 is taken as roughly fan-shaped.
Such device is compared with embodiment 2, and integral body is miniaturization more.And can obtain identical with the embodiment 2 sound wave effect that weakens to sound source to rib portion 22 both sides.
Fig. 7 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 4.At the foregoing description 1～3, crooked porous member 15 is shown, and, uses flat porous member 26 at the sound wave phase position change apparatus 25 of this embodiment 4.
Like this, because porous member 26 is made tabular, make and assemble and carry out easily.And, because rib portion 22 is set, can obtain weakening the effect of sound wave equally with the foregoing description 3.
Embodiment 5
Fig. 8 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 5.
In the various embodiments described above, 1 porous member is shown, and the sound wave phase position change apparatus 27 of present embodiment uses a plurality of porous members 28 separately.Joint at each porous member 28 and sound insulation sheet 13 forms rib portion 29.
Such sound wave phase position change apparatus 27 not only makes the phase place of the sound wave of injecting porous member 28 be offset, and rib portion 22,29 also dephases, and therefore, the effect that weakens sound wave is big.
Also have, shown in Figure 8 is flat porous member 28, but also can be for example polyline shaped or wavy section shape.
Embodiment 6
Fig. 9 is the key component sectional drawing of the sound wave phase position change apparatus of embodiments of the invention 6.The sound wave phase position change apparatus 30 of this embodiment uses flat porous member 26, and section shape is roughly opposite up and down with Fig. 7.
Use sound wave phase position change apparatus 30 as described above also can access the effect that weaken sound wave roughly the same with the foregoing description 3.
Embodiment 7
Figure 10 and Figure 11 are the key component sectional drawings of the sound wave phase position change apparatus of embodiments of the invention 7.In the drawings, sound insulation sheet assembly 31 has: the 3rd sound insulation sheet 32 of the 1st and the 2nd sound insulation sheet 12,13, circular-arc section, and from 2 the 4th sound insulation sheets 33 of the 3rd sound insulation radial configuration in sheet 32s.Sound wave phase position change apparatus 34 has the porous member 35 of sound insulation sheet assembly 31 and circular-arc section.The constituent material of tabular porous member 35 is identical with the various embodiments described above, but its thickness changes.The device of Figure 11 is the device with the end thickening opposite with porous member 35 upset ends of Figure 10.
Below its action is described.The porous member 35 of sound wave phase position change apparatus 34, its sound characteristics comprise acoustic mass m and acoustic resistance r, and the acoustic property of spatial portion 16 comprises acoustic capacitance c.Here, change the thickness of porous member 35, can guide sound quality m and acoustic resistance r, obtain desirable phase characteristic.
Also have, among Figure 10 and Figure 11, the thickness of porous member 35 is continually varyings, but also can make its discontinuous variation.
Embodiment 8
Figure 12 and Figure 13 are the key component sectional drawings of the sound wave phase position change apparatus of the embodiment of the invention 8.In this routine sound wave phase position change apparatus 36, use the tabular porous member 15 of same thickness, but this porous member 15 is laminated, general thickness is changed.Figure 13 is the laminated configuration example different with Figure 12.Use such sound wave phase position change apparatus also can access the effect identical with the foregoing description 7.
Embodiment 9
Figure 14 is the key component sectional drawing of the sound wave phase position change apparatus of the embodiment of the invention 9.In this routine sound wave phase position change apparatus 37, use the flat porous member 28 of porous member 38,39 replacement Fig. 8 of section shape bending.
Because make the section bending of porous member 38,39 like this, the real surface of these porous members amasss, is that sound wave incident area becomes bigger than projected area.With this acoustic mass m and acoustic resistance r on apparent are diminished, obtain the phase characteristic of more approaching ± 180 degree.Thereby can access the excellent more effect that weakens sound wave.
Embodiment 10
Also have, the section shape of porous member is not limited to shown in Figure 14, also can use the porous member 40 of section shape for example shown in Figure 15, and the surface area ratio projected area can obtain same effect greatly.
Figure 16 is the key component sectional drawing of the sound wave phase position change apparatus of the embodiment of the invention 11.In this routine sound wave phase position change apparatus 41, constitute the sound insulation sheet of spatial portion 16 bottoms, promptly the 2nd insulate against sound sheet 13, and connect porous member 15 at its low side respectively to the horizontal direction inclination.Other structures are identical with the foregoing description 3.
In such sound wave phase position change apparatus 41, the water that sees through porous member 15 infiltration spatial portions flows along the 2nd sound insulation sheet 13, discharges to the outside near the porous members 15 the rib portion 22.Thereby, when sound wave phase position change apparatus 41 is used for sound-proof wall in outdoor application, be convenient to rainproof.And the effect that weakens sound wave is identical with embodiment 3.
Figure 17 is the key component sectional drawing of the sound wave phase position change apparatus of the embodiment of the invention 12.In this routine sound wave phase position change apparatus 42, ligthing paraphernalias 43 such as fluorescent lamp are set in the sound insulation sheet assembly 31.And the material of porous member 15 and sound insulation sheet assembly 31 uses transparent or semitransparent acrylic resin, vinyl chloride resin, ABS resin, polycarbonate resin etc.
In such sound wave phase position change apparatus 42, sound-proof wall can be used as lighting device.Can access the effect roughly the same again with embodiment 3.
Figure 18 is the plan view of formation of the sound wave phase position change apparatus of expression embodiments of the invention 13.Section shape is identical with Fig. 4.This routine sound wave phase position change apparatus 21 is along the size of its length direction change the entire profile, to increase sound wave incident area.
In such sound wave phase position change apparatus 21, substantial surface area ratio projected area is big, therefore, can reduce acoustic mass m and acoustic resistance r on apparent, obtains the characteristic of the phase difference of more approaching ± 180 degree, also can obtain the excellent effect that weakens sound wave.
Also have,, polyline shaped is made on the plane of sound wave phase position change apparatus 21 both sides, but be not limited to this, also can make wave-like for example shown in Figure 19 at Figure 18.Again, for the sound wave phase position change apparatus 24 with section shape shown in Figure 6, the flat shape that also can make the one side is by variation shown in Figure 20.
Figure 21 is the approximate three-dimensional map of the sound wave phase position change apparatus of embodiments of the invention 14.Illustrate in the various embodiments described above other all-in-one-piece sound wave phase position change apparatus is installed on the sound insulating panel, and in this example, the part of the part of sound insulating panel 11 and sound wave phase position change apparatus 24 is beforehand with and is integral.Like this, can also simplify installation to reduce component number by the sharing structure material.
Figure 22 is the stereogram of summary of other examples of expression Figure 21.In this example, the both ends 11a of the length direction of sound insulating panel 11 parts extends longlyer than sound wave phase position change apparatus 24 parts.Such sound-proof wall is provided with the pillar that section is a H shape (not shown) by means of keeping erectting at interval, inserts the method for the both ends 11a of sound insulating panel 11 in the groove of the pillar of this H shape section, obtains easily installing.
Under the situation that sound wave phase position change apparatus and sound insulating panel are integrally formed, the part of sound wave phase position change apparatus can have the distortion shown in the various embodiments described above.
Again, in the various embodiments described above, the situation that sound wave phase position change apparatus is used for sound-proof wall only is shown, still, also can on the works beyond the sound insulating panels such as for example mansion, the use sound wave phase position change apparatus be set.
As mentioned above, the invention sound wave phase position change apparatus of the present invention the 1st aspect possesses: be made of porous material Porous member, and constituted by polylith sound insulation sheet, supporting porous member, and at the back of porous member Form volume different, the sound insulation sheet assembly of a plurality of spatial portions independently, therefore, can make the phase of incident acoustic wave Biased moving greatly can be improved sound wave with this and mutually be interfered the sound wave that causes to weaken effect.
The invention sound wave phase position change apparatus of the present invention the 2nd aspect, use with many plastic grain parts deposited and Therefore the porous member that the porous material that becomes consists of, is easy to porous member is made various shapes, is easy to simultaneously transfer The porosity of whole porous member.
The invention sound wave phase position change apparatus of the present invention the 3rd aspect exposes outside sound insulation sheet and porous member and connects Close, form rib section. Therefore, the phase place that causes except porous member and spatial portion changes, also have rib section to cause phase The position changes, and can improve the effect that weakens sound wave.
The invention sound wave phase position change apparatus of the present invention the 4th aspect uses tabular porous member, and makes it thick Degree changes, therefore can guide sound quality m and acoustic resistance r, obtain desirable phase characteristic.
The invention sound wave phase position change apparatus of the present invention the 5th aspect changes with the way that changes laminated number Therefore the thickness of porous member, be easy to guide sound quality and acoustic resistance.
The invention sound wave phase position change apparatus of the present invention the 6th aspect, the tabular porous structure of Usage profile shape bending Part, thereby, acoustic mass m and acoustic resistance r on apparent are reduced, can more be approached ± phases of 180 degree The potential difference characteristic weakens effect thereby can obtain more excellent sound wave.
The invention sound wave phase position change apparatus of the present invention the 7th aspect makes the profile size edge of the section of porous member Its length direction and change, thus the sound wave incident area of increase porous member. Therefore, can make sound on apparent Quality m and acoustic resistance r reduce, and are more approached ± 180 phase difference characteristics of spending, thereby can obtain more excellent Sound wave weaken effect.
The invention sound wave phase position change apparatus of the present invention the 8th aspect, the sound insulation sheet of the bottom of Special composition section is relative Tilt in horizontal direction, connect porous member in the end on its low one side, therefore, be arranged at outdoor situation Under can prevent that rainwater from accumulating in the spatial portion.
The invention sound wave phase position change apparatus of the present invention the 9th aspect, the material of porous member and sound insulation sheet assembly Use light transmissive material, therefore, can prevent that sound wave phase position change apparatus from making the nearby dimmed of sound panel.
The invention sound-proof wall of the present invention the 10th aspect possesses: erects and is arranged at sound source sound panel nearby, and tool Porous member that porous material consists of is arranged and install along the upper end of sound panel, simultaneously by some sound insulation sheets combination structures Become, supporting porous member, and form at the back of porous member volume different, a plurality of spatial portions independently Therefore the sound wave phase position change apparatus of sound insulation sheet assembly can make the phase deviation of incident acoustic wave big, improves with this Sound wave interferes the sound wave that causes to weaken effect mutually.
Claims (10)
1. sound wave phase position change apparatus possesses: porous member, and constitute and in order to support the sound insulation sheet assembly of described porous member, it is characterized in that by many sound insulation sheets,
Described porous member is made of and is arranged on the periphery of described sound insulation sheet assembly porous material,
Described sound insulation sheet form at the back of described porous member volume different, a plurality of spatial portions independently.
2. sound wave phase position change apparatus according to claim 1 is characterized in that, porous member is by the deposited porous material that forms of many plastic grain parts is constituted.
3. sound wave phase position change apparatus according to claim 1 is characterized in that, exposes outside sound insulation sheet and porous member and engages, and forms rib portion.
4. sound wave phase position change apparatus according to claim 1 is characterized in that porous member is tabular, and its thickness changes.
5. sound wave phase position change apparatus according to claim 4 is characterized in that, changes the thickness of porous member with the way of the laminated number that changes porous member.
6. sound wave phase position change apparatus according to claim 1 is characterized in that porous member is tabular, and its section configuration bending, thereby sound wave incident area increases.
7. sound wave phase position change apparatus according to claim 1 is characterized in that, the size of porous member the entire profile changes along its length direction, thereby the sound wave incident area of porous member increases.
8. sound wave phase position change apparatus according to claim 1 is characterized in that, the sound insulation sheet that constitutes the bottom of spatial portion tilts with respect to horizontal direction, connects porous member in the end on its low one side.
9. sound wave phase position change apparatus according to claim 1 is characterized in that, porous member and sound insulation sheet assembly are made of the material of printing opacity respectively.
10. sound-proof wall is characterized in that possessing:
Setting is arranged at sound source sound insulating panel nearby, and
Have porous member that porous material constitutes and install along the upper end of described sound insulating panel, constitute by polylith sound insulation sheet simultaneously, supporting described porous member, and form at the back of described porous member volume different, the sound wave phase position change apparatus of the sound insulation sheet assembly of a plurality of spatial portions independently.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP74442/96 | 1996-03-28 | ||
| JP8074442A JP2859578B2 (en) | 1996-03-28 | 1996-03-28 | Sound wave phase change device and sound barrier |
| JP74442/1996 | 1996-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1160810A CN1160810A (en) | 1997-10-01 |
| CN1125219C true CN1125219C (en) | 2003-10-22 |
Family
ID=13547362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96122863A Expired - Fee Related CN1125219C (en) | 1996-03-28 | 1996-10-18 | Sound wave phase position change apparatus and sound insulation wall |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0798426B1 (en) |
| JP (1) | JP2859578B2 (en) |
| KR (1) | KR100240212B1 (en) |
| CN (1) | CN1125219C (en) |
| DE (1) | DE69607826T2 (en) |
| MY (1) | MY124453A (en) |
| SG (1) | SG47192A1 (en) |
| TW (1) | TW305006B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2774107B1 (en) * | 1998-01-28 | 2000-04-28 | Pic Conseil | ACOUSTIC SHOCK ABSORBER FACING FOR NOISE WALL |
| FR2778487A1 (en) * | 1998-05-05 | 1999-11-12 | Socarel | Noise reduction capping, molded or pressed in concrete and incorporating particles of treated wood |
| AT408552B (en) * | 1998-05-12 | 2002-01-25 | Brunbauer Wolfgang Dipl Ing | NOISE CONTROL DEVICE |
| CA2424970C (en) * | 2000-11-08 | 2006-09-26 | Masao Suzuki | Enfolding sound barrier |
| KR20040021708A (en) * | 2002-08-29 | 2004-03-11 | 유니프레스 가부시키가이샤 | Soundproof device |
| NL1028876C2 (en) * | 2005-04-26 | 2006-10-27 | Univ Delft Tech | Noise barrier. |
| DE102008036581A1 (en) | 2008-08-06 | 2010-02-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Soundproof wall has supporting wall with molded coating, where planar structure is applied on molded coating, so that planar structure is formed by molded coating and hollow spaces |
| DE102010009987A1 (en) * | 2010-03-02 | 2011-09-08 | Bettina Köhne | Soundproof screen comprises soundproof screen edge which has curved surface that runs perpendicular to soundproof screen edge, where diffraction edge is formed, such that it runs parallel to soundproof screen edge |
| JP5380610B2 (en) * | 2011-01-24 | 2014-01-08 | 学校法人 関西大学 | Sound insulation wall using sound absorber |
| CN105603894B (en) * | 2014-11-10 | 2018-06-26 | 苏交科集团股份有限公司 | A kind of sound barrier top noise elimination structure |
| WO2018038043A1 (en) * | 2016-08-26 | 2018-03-01 | 富士フイルム株式会社 | Soundproof structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146969B2 (en) | 1973-07-10 | 1976-12-11 | ||
| JPS5291514A (en) | 1976-01-27 | 1977-08-02 | Kiyouji Fujiwara | Sound insulation wall |
| EP0578272B1 (en) * | 1988-10-31 | 1997-02-26 | Mitsubishi Denki Kabushiki Kaisha | Porous structural unit |
| GB2269842A (en) * | 1992-08-21 | 1994-02-23 | Univ Southampton | Sound absorbing apparatus |
| JP2652752B2 (en) * | 1993-02-09 | 1997-09-10 | 日東紡績株式会社 | Sound absorbing device for sound insulation wall and sound insulation wall |
| DE19509678C2 (en) * | 1995-03-07 | 2003-08-21 | Deutsche Bahn Ag | Soundproof wall |
-
1996
- 1996-03-28 JP JP8074442A patent/JP2859578B2/en not_active Expired - Fee Related
- 1996-09-25 TW TW085111746A patent/TW305006B/en active
- 1996-10-11 MY MYPI96004220A patent/MY124453A/en unknown
- 1996-10-18 CN CN96122863A patent/CN1125219C/en not_active Expired - Fee Related
- 1996-10-31 EP EP96117510A patent/EP0798426B1/en not_active Expired - Lifetime
- 1996-10-31 DE DE69607826T patent/DE69607826T2/en not_active Expired - Fee Related
- 1996-11-08 SG SG1996011071A patent/SG47192A1/en unknown
- 1996-12-11 KR KR1019960064277A patent/KR100240212B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SG47192A1 (en) | 1998-03-20 |
| JPH09265291A (en) | 1997-10-07 |
| EP0798426A1 (en) | 1997-10-01 |
| CN1160810A (en) | 1997-10-01 |
| EP0798426B1 (en) | 2000-04-19 |
| TW305006B (en) | 1997-05-11 |
| KR100240212B1 (en) | 2000-01-15 |
| JP2859578B2 (en) | 1999-02-17 |
| DE69607826D1 (en) | 2000-05-25 |
| KR970065965A (en) | 1997-10-13 |
| DE69607826T2 (en) | 2000-12-21 |
| MY124453A (en) | 2006-06-30 |
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