SK57596A3 - Device for noise absorbing - Google Patents
Device for noise absorbing Download PDFInfo
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- SK57596A3 SK57596A3 SK575-96A SK57596A SK57596A3 SK 57596 A3 SK57596 A3 SK 57596A3 SK 57596 A SK57596 A SK 57596A SK 57596 A3 SK57596 A3 SK 57596A3
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- Prior art keywords
- noise
- absorber
- spacer
- damping
- plate
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- 239000006096 absorbing agent Substances 0.000 claims abstract description 42
- 125000006850 spacer group Chemical group 0.000 claims abstract description 18
- 238000013016 damping Methods 0.000 claims description 25
- 239000006260 foam Substances 0.000 claims description 12
- 230000030279 gene silencing Effects 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 6
- 239000011496 polyurethane foam Substances 0.000 claims description 6
- 239000011796 hollow space material Substances 0.000 claims description 5
- 239000003562 lightweight material Substances 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000007779 soft material Substances 0.000 claims description 3
- 239000004640 Melamine resin Substances 0.000 claims description 2
- 229920006264 polyurethane film Polymers 0.000 claims description 2
- 230000003584 silencer Effects 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 208000000474 Poliomyelitis Diseases 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 235000014101 wine Nutrition 0.000 description 1
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
- E04B1/8409—Sound-absorbing elements sheet-shaped
-
- 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
- E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
-
- 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
- E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
-
- 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
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
-
- 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
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
- E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
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)
- Building Environments (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
Description
Oblasť technikyTechnical field
Vynález sa týka hlavne na umiestnenie plochách .In particular, the invention relates to the placement of surfaces.
zariadenia na tlmenie hluku , na priestorovo obmedzujúcichnoise suppression devices, space-limiting
Doterajší stav techniky i’a tlmenie akustických priestorov , ako papríklad zvukových štúdií , ale tiež aerodynamických tunelov , sú známe zariadenia na tlmenie hluku upravené na priesrorovo obmedzujúcich plochách , ako na stenách alebo krytoch .BACKGROUND OF THE INVENTION [0003] In addition to damping acoustic spaces, such as sound studios, as well as wind tunnels, noise damping devices are known to be provided on space-limiting surfaces, such as walls or covers.
Na tlmenie hluku sa až doteraz používali nák ladné klinové konštrukcie s klinmi , ktoré mali dĺžku 60 až 120 cm , a ktoré boli upravené na stenách a krytoch tlmených priestorov . Tieto kliny skladajú ce sa z naplnenej hmoty vyčnievali svojou dĺžkou , ktorá zodpovedala dĺžke zvukových vín , zhruba 1 m do priestoru .Up to now, wedge-shaped wedges of 60 to 120 cm in length have been used to attenuate noise and have been modified on the walls and covers of the attenuated spaces. These wedges, consisting of filled material, protruded about 1 m into the space by their length corresponding to the length of the sound wines.
plošne zhotovené zariadenia na sú taktiež upravené na stenách priestorov.. Také ploché zaria majú pórovitý pohlcovač a HeTaktiež sú známe tlmenie hluku , ktoré a krytoch akustických denia na tlmenie hluku lmholtzov rezonátor .Such flat devices have a porous absorber and He is also known for sound attenuation and acoustic damping for sound attenuation lmholtz resonator.
Podstata__vynálezuPodstata__vynálezu
Vynález si kladie za úlohu vytvoriť zariadenie na tlmenie hluku v úvode uvedeného typu , ktoré v hĺbke priestoru zaberie málo miesta a ktoré tlmí hluk v širokopásmovej frekvenčnej oblasti . Okrem toho je jednoducho a ekonomicky výhodne zhotoviteľné .SUMMARY OF THE INVENTION It is an object of the present invention to provide a noise damping device of the type mentioned at the outset which takes up little space in the depth of space and which attenuates noise in the broadband frequency domain. In addition, it is simple and economical to produce.
Vytýčená úloha sa podľa vynálezu rieši zariade ním na tlmenie hluku , hlavne na umiestnenie na priestor obmedzujúcich plochách , ktoré má prvý tlmiaci článok na aizk® ' zvukové frekvencie a pdŕuhý. t líšiaci článok na vysoké zvukové frekvencie , pričom prvý tlmiaci článok má doskový pohlcovač , ktorý je usporiadaný prostredníctvom rozperného článku v odstupe ku prieš torovo obmedzujúcej ploche a druhý tlmiaci článok má na doskovom pohlcovači usporiadaný pórovitý pohlcovač . Prostredníctvom tohoto zhotovenia zariadenia na tlmenie hluku podľa vynálezu sa odstránia na priestor náročné klinové mechanizmy . Zariadenie na tlmenie hluku podľa vynálezu je zhotovené zvlášť jednoducho z dvoch tlmiacich článkov f pričom prvý tlmiaci článok slúži ná pohlcovanie zvukových frekvencií pod 500 Hz . Na prvom tlmiacom článku usporiadaný druhý tlmiaci článok tlmí vyššie zvukové frekvencie vyvolané trecími a inými energetickými stratami . Zariadenie na tlmenie hluku podľa vynálezu sa vyznačuje kompaktnou konštrukciou a hlavne hladkou povrchovou plochou . Priestorové straty sú tak veľmi nepatrné . Pri využití v aerodynamických tuneloch sa usporiadaním podľa vynálezu podstatne znížia straty prúdenia , podmienené až doteraz používanými klinovými mechanizmami.According to the invention, this object is achieved by means of a noise dampening device, in particular for placing in a space-limiting area, which has a first damping element for aizk® sound frequencies and dense. The first damping element has a plate absorber which is arranged by a spacer element spaced from the prism-limiting surface and the second damping element has a porous absorber arranged on the plate absorber. This embodiment of the noise attenuation device according to the invention eliminates the space-intensive wedge mechanisms. The noise damping device according to the invention is made particularly simply of two damping elements f, the first damping element serving to absorb sound frequencies below 500 Hz. The second damping element, provided on the first damping element, attenuates the higher sound frequencies caused by friction and other energy losses. The noise attenuation device according to the invention is characterized by a compact construction and, in particular, a smooth surface. The spatial losses are thus very small. When used in wind tunnels, the arrangement according to the invention significantly reduces flow losses due to the wedge mechanisms used hitherto.
Podľa výhodného zhotovenia .vynálezu podľa patentového nároku 2 je rozperný článok vytvorený v tvare rámu a na rozpernom článku usporiadaný doskový pohlcovač zviera s priestorovo obmedzenou plochou dutý priestor . Usporiadanie zariadenia na tlmenie hluku s du tým priestorom upraveným k priestorovo Obmedzujúcej ploche tvorí zvlášť dobré tlmenie nízkych zvukových frekvencií .According to a preferred embodiment of the invention according to claim 2, the spacer member is in the form of a frame and a hollow space is arranged on the spacer member with a space-limited area. The arrangement of the silencing device with the space provided for the space-limiting surface constitutes a particularly good attenuation of the low sound frequencies.
Podľa dalšieho výhodného zhotovenia zariadenia podľa vynálezu sa skladá doskový pohlcovač z v ohybe mäkkého materiálu . Tým sa dalej zdokonalí tlmenie hluku v nízkych frekvenčných miestach.According to a further preferred embodiment of the device according to the invention, the plate absorber comprises a bend of soft material. This further improves noise attenuation at low frequency locations.
Podľa dalšieho výhodného zhotovenia zariadenia podľa vynálezu je doskový pohlcovač uzavretá fólia z plastickej hmoty , hlavne fólie z polyuretánu .According to a further preferred embodiment of the device according to the invention, the plate absorber is a closed plastic film, in particular a polyurethane film.
Podľa dalšieho výhodného zhotovenia zariadenia podľa vynálezu má hrúbka doskového pohlcovača hod notu 20 /im až 200 /im . Ako obzvlášť výhodná sa preukázala hrúbka doskového pohlcovača o hodnote 25/um až 50 /um.According to a further preferred embodiment of the device according to the invention, the thickness of the plate absorber has a value of 20 µm to 200 µm. A plate absorber thickness of 25 µm to 50 µm has proven to be particularly advantageous.
Podľa dalšieho výhodného zhotovenia zariadenia podľa vynálezu pozostáva rozperný článok z odľahčenej hmoty , hlavne z penovej plastickej hmoty z otvorenými bunkami , ako z polyuretán ovej penovej hmoty alebo z penovej melaminovej .živice .According to a further preferred embodiment of the device according to the invention, the spacer element consists of a lightweight material, in particular an open-cell foam plastic such as a polyurethane foam or a melamine foam resin.
V usporiadaní zariadenia podľa vynálezu má hrúbka rozperného článku zhruba hodnotu 100 mm.In the arrangement of the device according to the invention, the thickness of the spacer element is approximately 100 mm.
Podľa dalšieho výhodného zhotovenia zariadenia podľa vynálezu sa predpokladá 7 že je upravený obal, bočné obklopujúci rozperný článok . Tento obal je výhodne zhotovený z plechu .In a further preferred embodiment of an apparatus according to the invention it is expected to be 7 treated container, side surrounding the intermediate piece. This wrapper is preferably made of sheet metal.
Podľa dalšieho výhodného zhotovenia zariadenia podľa vynálezu sa skladá pórovitý pohlcovač z odľahčenej hmoty , hlavne z penovej plastickej hmoty s otvorenými bunkami , napríklad, z polyuretanovej penovej hmoty alebo z penovej melaminovej živice .According to a further preferred embodiment of the device according to the invention, the porous absorber consists of a lightweight material, in particular an open-cell foam plastic, for example a polyurethane foam or a melamine foam resin.
V zvlášť výhodnom zhotovení zariadenia podľa vynálezu je na ku hluku privrátenej ploche doskového pohlcovača upravená dierkovaná fólia Prostredníctvom takej fólie nie je nepriaznivo ovplyvnená pohlcovacia charakteristika zariadenia na tlmenie hluku na vysoké frekvencie . Pritom má dierkovaná fó lia s výhodou podiel dierkovaných plôch v hodnote 20 až 80 %· Ako zvlášť výhodný sa ukázal podiel dierkovaných plôch v hodnote 30 až 50 % .In a particularly advantageous embodiment of the device according to the invention, a perforated film is provided on the noise-facing surface of the plate absorber. Such a film does not adversely affect the absorption characteristics of the high-frequency noise attenuator. In this case, the perforated film preferably has a proportion of perforated surfaces of 20 to 80%. The proportion of perforated surfaces of 30 to 50% has proved particularly advantageous.
Podľa ďalšieho výhodného zhotovenia zariadenia podľa vynálezu je pórovitý pohlcovač zhotovený v podstate v tvare kvádra a má hrúbku v hodnote zhruba 130 mm .According to a further preferred embodiment of the device according to the invention, the porous absorber is substantially cuboid and has a thickness of approximately 130 mm.
Prehľad obrázkov na výkresochBRIEF DESCRIPTION OF THE DRAWINGS
Vynález je 3alej podrobnejšie znázornený a opi saný na príklade zhotovenia v spojení s výkresovou časťou .The invention is illustrated and described in more detail below by way of example with reference to the drawing.
Na obr. 1 je schematicky a nie v zodpovedajúcich rozmeroch znázornený prierez na priestor obrne ďzujúcu plochu usporiadaného zariadenia na tlmenie hluku podľa vynálezu .In FIG. 1 is a schematic cross-sectional view, not in corresponding dimensions, of the polio space of the surface of the inventive silencing device.
Na obr. 2 je znázornený skúšobný diagram , ktorý uvádza dosahovaný stupeň pohlcovania hluku v závislosti od frekvencie prostredníctvom zariadenia na tlmenie hluku podľa vynálezu .In FIG. 2 is a test chart showing the degree of noise absorption achieved by a noise attenuation device according to the invention.
Rríklad__,(/££y^£ýy//£^__vynálezuRríklad __, (/ ^ £ ££ y Yy // ^ £ __ invention
Na obr. 1 je znázornené zariadenie 1 na tlmenie hluku, ktoré je upravené na priestorovo obmedzujú-In FIG. 1 shows a noise-damping device 1 which is adapted to be spatially limited.
má v tvare rámu zhotovený rozperný článok 2 a na tomto rozpernom článku 2 usporiadaný doskový pohlcovač 2* Rozperný článok 2 je na priestor robmedzujú .cej ploche 6 upravený napríklad prilepením . Prostredníctvom v tvare rámu zhotoveného rozperného článku 2 a prostredníctvom na ňom napríklad prilepením usporiadaného doskového pohlcovača 3 je spolu s priestor*. obmedzuj úe®® iplochou 6 uzavretý vzduchom naplnený dutý priestor £ . Rozperný článok 2 sa skladá z odľahčenej hmoty , napríklad zo spenenej ' plastickej hmoty s otvorenými bunkami , ako napríklad z polyuretanovéj penovej hmoty alebo z penovej melaminovej živice . . Doskový pohlcovač 3 sa skladá z v ohybe mä kkého materiálu , výhodne z fólie z plastickej hmoty. Prostredníctvom tohoto usporiadania prvého tlmiaceho člá nku podľa vynálezu sú tlmené zvukové frekvencie pod zhruba 500 Hz prostredníctvom v ohybe mäkkého doskového pohlcovača 3 a prostredníctvom dutého priestoru 5, upraveného k priestor obmedzujúcej ploche 6. Rozperný článok 2 môže byť , ako je to na obr. znázornené , bočné obklopený obalom 7 · Prostredníctvom tohoto obalu J, ktorý môže byť vytvorený napríklad z tenkých kovových alebo plechových pásov alebo podobne , sa pohlcovacia kvalita prvého tlmiaceho článku úalej zdokonaľuje a vytvorí sa vymedzenie proti äalším susedným zariadeniam na tlmenie hluku .it has a spacer element 2 in the form of a frame and a plate absorber 2 arranged thereon. * The spacer element 2 is adapted to the space defining surface 6, for example by gluing. By means of a frame-shaped spacer element 2 and by means of it, for example by gluing an arranged plate absorber 3, it is together with the space *. restrict the air-filled hollow space 6 with the surface 6. The spacer 2 consists of a lightweight material, for example a foamed open-cell plastic, such as a polyurethane foam or foam melamine resin. . The plate absorber 3 consists of a bending soft material, preferably a plastic film. By means of this first damping element arrangement according to the invention, the sound frequencies are lowered below about 500 Hz by bending the soft plate absorber 3 and by means of a hollow space 5 adapted to the space limiting surface 6. The spacer 2 can be as shown in FIG. illustrated, laterally surrounded by a wrapper 7 By means of this wrapper J, which may be formed, for example, of thin metal or sheet metal strips or the like, the absorptive quality of the first damping element is further improved and a delimitation against other adjacent noise damping devices is created.
Druhý tlmiaci článok zariadenia 1 na tlmenie hluku podľa vynálezu je upravený priamo , naprík lad prilepením , na doskovom pohlcovači 3 a má v podstate pórovitý pohlcovač 4 z odľahčenej hmoty , hlavne z penovej plastickej hmoty s otvorenými bunkami , ako z polyuretánovej penovej hmoty alebo z penovej melaminovej ;;živice * Na tej ploche , ktorá je privrátená k hluku , môže mať pórovitý pohlcovaČ 4 , ako je to znázornené , otvormi <9 výbave nú dierkovanú fóliu 8. Podiel plochy otvorov 9 tejto dierkovanej fólie 8 má hodnotu 20 až 80 %. Ako obzvlášť výhodný sa ukázal podiel plochy otvorov % o hodnote 30 až 50The second silencer of the silencing device 1 according to the invention is provided directly, for example by glueing, on the plate absorber 3 and has a substantially porous absorber 4 of lightweight material, in particular of open cell foam plastic such as polyurethane foam or foam foam. The porous absorber 4, as shown, may have a perforated film 8 provided with apertures 9 on the surface that is facing the noise. The proportion of the aperture surface area 9 of the apertured film 8 is 20 to 80%. A 30% to 50% aperture area area area proved to be particularly advantageous
V druhom tlmiacom článku zariadenia 1 na tlmenie hluku podľa vynálezu sú utlmené zvukové frekvencie nad 500 Hz prostredníctvom trecích a iných e nergetických strát v pórovitom pohlcovači 4·In the second attenuator of the silencing device 1 according to the invention, the sound frequencies above 500 Hz are attenuated by friction and other non-energy losses in the porous absorber 4.
Hrúbka rozperného článku 2 má hodnotu zhruba 100 mm, hrúbka pórovitého pohlc ovača 4 má hodnotu zhruba 130 mm. Polia z plastickej hmoty , ktorá slúži ako doskový pohlcovač 2 » De hrubá len 200 /um , výhodne len 50 /um , takže celé zariadenie 1 na tlmenie hluku má hrúbku len zhruba v hodnote 230 mm.The thickness of the spacer 2 is approximately 100 mm, the thickness of the porous absorber 4 is approximately 130 mm. The fields of plastics material, which serves as a plate-shaped absorber 2 »D e thick as 200 / um, preferably only a 50 / um, so that the entire device 1 to the sound insulation has a thickness of only a value of about 230 mm.
Z uvedeného je jasné , že v porovnaní s ináč oby čajnými , zhruba 1 m dlhými dielčími mechanizmami dochádza k jasne výhodnejšiemu spotrebovaniu priestoru , takže tlmené akustické priestory , vybavené zariade ním 1 na tlmenie hluku podľa vynálezu poskytujú viac priestoru , prípadne môžu byť- už dopredu zhotovené'.; ako menšie . Preto je taktiež výhodné využitie zariadenia 1 na tlmenie hluku podľa vynálezu v aerodynamických tuneloch , pretože sa prostredníctvom rovnej povrchovej plochy , ktorá je upravená rovnobežne k priestor obmedzujúcej ploche 6, vytvárajú veľmi malé straty v prúdení .It is clear from the above that, compared to the other two tea meters, which are approximately 1 m long, there is a clearly more advantageous consumption of space, so that the attenuated acoustic spaces equipped with the noise attenuation device 1 of the invention provide more space, or made .; than smaller. Therefore, it is also advantageous to use the noise attenuation device 1 according to the invention in wind tunnels, since very low flow losses are generated by a flat surface which is arranged parallel to the space limiting surface 6.
Zariadenie 1 na tlmenie hluku podľa vynálezu tlmí podľa dalej uvedených výsledkov radu merania zvuk v oblasti širokého pásma frekvencie . V tomto rade merania bol stupeň pohlcovania zvuku určovaný podľa DIN 52212. Hrúbka pórovitého pohlcováča 4 z basotectú mala hodnotu 130 mm , hrúbka doskového pohlc ovača 2 mala hodnotu 50 /um a hrúbka obklopeného dutého priestoru % mala 100 mm ' . Skúšob O ná plocha mala hodnotu 9,8 m ,meraný priestor haly mal objem 210 nr. Meraný bol činiteľ zvukového pohltenia pri frekvencii f v Hz .The noise attenuation device 1 according to the invention attenuates a series of measurements in the wide frequency range according to the following results. In this series of measurements, the degree of sound absorption was determined according to DIN 52212. The thickness of the porous absorber 4 of basotectus was 130 mm, the thickness of the plate absorber 2 was 50 µm and the thickness of the enclosed hollow space% was 100 mm -1. The test area was 9.8 m, the measured area of the hall had a volume of 210 nr. The sound absorption factor at f in Hz was measured.
Ako je z výsledkov merania vidno , je činiteľ . 8 zvukovej pohltivosti v širokej frekvenčnej ob lasti v hodnote 200 Hz až 500 Hz vždy väčší ako 1.As can be seen from the measurement results, it is a factor. 8 sound absorption in a wide frequency owned taking a value of 200 Hz to 500 Hz is always greater than the first
Len pod hodnotou zhruba 180 Hz klesne činiteľ zvuko vého pohltenia pod hodnotu 1 . Tieto výsledky merania sú graficky znázornené v skúšobnom diagrame na obr . 2 , pričom na úsečke jé nanesená frekvencia v Hz a na poradovníku činiteľ zvukového pohltenia .Only below about 180 Hz, the sound absorption coefficient falls below 1. These measurement results are graphically shown in the test diagram of FIG. 2, the frequency in Hz being applied to the line and the sound absorption coefficient applied to the line.
Claims (19)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19516819A DE19516819C2 (en) | 1995-05-08 | 1995-05-08 | Sound absorbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SK57596A3 true SK57596A3 (en) | 1996-12-04 |
Family
ID=7761346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SK575-96A SK57596A3 (en) | 1995-05-08 | 1996-05-07 | Device for noise absorbing |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0742322B1 (en) |
| JP (1) | JP3046242B2 (en) |
| KR (1) | KR100229250B1 (en) |
| CN (1) | CN1075150C (en) |
| CZ (1) | CZ125896A3 (en) |
| DE (2) | DE19516819C2 (en) |
| ES (1) | ES2135132T3 (en) |
| MY (1) | MY112640A (en) |
| SK (1) | SK57596A3 (en) |
| TW (1) | TW315396B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10151474B4 (en) * | 2000-10-18 | 2006-07-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Sound absorber with strip-shaped soundproof cover |
| DE10118187C2 (en) * | 2001-04-11 | 2003-03-27 | Siemens Ag | Device for designing the acoustics of a room |
| DE102004025352A1 (en) * | 2004-05-19 | 2005-12-22 | Schako Klima Luft Ferdinand Schad Kg Zweigniederlassung Kolbingen | wall |
| JP3580810B1 (en) * | 2004-05-27 | 2004-10-27 | 川崎重工業株式会社 | Sound absorbing device for very low frequency sound |
| WO2008055825A1 (en) * | 2006-11-07 | 2008-05-15 | Basf Se | Process for protecting combustible substrates and for producing composite layer materials comprising open-cell amino resin foams |
| EP2333181B1 (en) * | 2009-12-04 | 2013-03-20 | Phoneon GmbH | Acoustical component for influencing sound in a room |
| DE102014207852A1 (en) | 2013-04-26 | 2014-10-30 | Holzwerke Ladenburger GmbH & Co. KG | Acoustic absorber device |
| CN104538018A (en) * | 2014-12-25 | 2015-04-22 | 东南大学 | Acoustic control method of active structure of sealed cavity |
| JP7373360B2 (en) * | 2019-10-31 | 2023-11-02 | 日本音響エンジニアリング株式会社 | acoustic adjustment structure |
| WO2022222984A1 (en) * | 2021-04-23 | 2022-10-27 | The Hong Kong University Of Science And Technology | Ultra-low frequency acoustic absorber |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2169370A (en) * | 1936-12-19 | 1939-08-15 | Johns Manville | Sound-absorbing article |
| FR1352581A (en) * | 1963-04-03 | 1964-02-14 | Soundproofing slab of synthetic materials in the foam state, and method of manufacturing this slab | |
| DE1195066B (en) * | 1962-07-06 | 1965-06-16 | Hans Helmut Pfaffenholz Dipl I | Elastic element |
| DE2408028B2 (en) * | 1974-02-20 | 1978-05-11 | Fa. Carl Freudenberg, 6940 Weinheim | Sound absorbing plate |
| CH683855A5 (en) * | 1991-07-24 | 1994-05-31 | Zdzislaw Pregowski | Sound absorbing plate. |
| WO1994024382A1 (en) * | 1993-04-20 | 1994-10-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | False ceiling |
-
1995
- 1995-05-08 DE DE19516819A patent/DE19516819C2/en not_active Expired - Fee Related
-
1996
- 1996-04-11 DE DE59602222T patent/DE59602222D1/en not_active Expired - Fee Related
- 1996-04-11 ES ES96105780T patent/ES2135132T3/en not_active Expired - Lifetime
- 1996-04-11 EP EP96105780A patent/EP0742322B1/en not_active Expired - Lifetime
- 1996-04-26 MY MYPI96001608A patent/MY112640A/en unknown
- 1996-04-30 CZ CZ961258A patent/CZ125896A3/en unknown
- 1996-05-07 SK SK575-96A patent/SK57596A3/en unknown
- 1996-05-07 KR KR1019960014802A patent/KR100229250B1/en not_active IP Right Cessation
- 1996-05-08 TW TW085105470A patent/TW315396B/zh active
- 1996-05-08 CN CN96108963A patent/CN1075150C/en not_active Expired - Fee Related
- 1996-05-08 JP JP8137443A patent/JP3046242B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09111906A (en) | 1997-04-28 |
| TW315396B (en) | 1997-09-11 |
| EP0742322B1 (en) | 1999-06-16 |
| JP3046242B2 (en) | 2000-05-29 |
| CZ125896A3 (en) | 1996-11-13 |
| EP0742322A1 (en) | 1996-11-13 |
| KR100229250B1 (en) | 1999-11-01 |
| CN1075150C (en) | 2001-11-21 |
| ES2135132T3 (en) | 1999-10-16 |
| MY112640A (en) | 2001-07-31 |
| DE19516819A1 (en) | 1996-11-14 |
| DE19516819C2 (en) | 1999-05-27 |
| CN1143143A (en) | 1997-02-19 |
| KR960042518A (en) | 1996-12-21 |
| DE59602222D1 (en) | 1999-07-22 |
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