SE1451077A1 - Silencing device - Google Patents
Silencing device Download PDFInfo
- Publication number
- SE1451077A1 SE1451077A1 SE1451077A SE1451077A SE1451077A1 SE 1451077 A1 SE1451077 A1 SE 1451077A1 SE 1451077 A SE1451077 A SE 1451077A SE 1451077 A SE1451077 A SE 1451077A SE 1451077 A1 SE1451077 A1 SE 1451077A1
- Authority
- SE
- Sweden
- Prior art keywords
- sound
- absorbing elements
- damping device
- air ducts
- elements
- Prior art date
Links
- 230000030279 gene silencing Effects 0.000 title 1
- 238000005192 partition Methods 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 64
- 235000015096 spirit Nutrition 0.000 claims description 5
- 230000008016 vaporization Effects 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 8
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- 241000270272 Coluber Species 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B7/10—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses by special construction of the frame members
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
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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
- E04B1/8209—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/18—Air-flow control members, e.g. louvres, grilles, flaps or guide plates specially adapted for insertion in flat panels, e.g. in door or window-pane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/242—Sound-absorbing material
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
Abstract
Enligt uppfinningen tillhandahålls en Ijuddämpningsanordning för montering i en genomgående öppning i en fönsterkarm eller i en annan öppning genom en skiljeyta. Anordningen innefattar ett flertal luftkanaler som sträcker sig längs med hela eller huvudsakligen hela ljuddämpningsanordningens djup, vilka luftkanaler skiljs åt av ljudabsorberande element som är fixerade relativt varandra. En första ände hos var och en av åtminstone två av de ljudabsorberande elementen har en annan bredd än respektive andra ände. De åtminstone två ljudabsorberande elementen av de ljudabsorberande elementen är växelvis anordnade så, att vartannat av de ljudabsorberande elementen smalnar av i ljuddämpningsanordningens djupriktning, och resterande ljudabsorberande element utvidgas i djupriktningen, vilket därmed gör att åtminstone en av luftkanalerna är vinklad relativt ljuddämpningsanordningens djupriktning.(Fig. 2)According to the invention, a sound attenuation device is provided for mounting in a through-opening in a window frame or in another opening through a partition surface. The device comprises a plurality of air ducts extending along the entire or substantially entire depth of the sound attenuation device, which air ducts are separated by sound-absorbing elements which are fixed relative to each other. A first end of each of at least two of the sound absorbing elements has a different width than the respective other end. The at least two sound-absorbing elements of the sound-absorbing elements are alternately arranged so that each of the sound-absorbing elements tapers in the deep direction of the sound-absorbing device, and the remaining sound-absorbing elements expand in the deep direction, so that at least one of the air ducts is angled relative to the sound channels. 2)
Description
LJUDDAMPNINGSANORDNING Tekniskt omrade Uppfinningen hanfor sig till omradet ljuddampningsanordning f6r montering i en genomgaende oppning i en fonsterkarm, vagg eller liknande. SOUND STEAMING DEVICE Technical area The invention relates to the field of sound damping device for mounting in a through-opening in a window frame, cradle or the like.
Teknisk bakgrund For att tillhandahalla tilluft till ett rum i en bostad eller liknande kan ventiler som monteras pa, i eller invid en fonsterkarm anvandas. Sadana ventiler är vanligtvis langstrackta och reglerar flodet genom en eller flera genomgaende 6ppningar i fonsterkarmen eller i en intilliggande skiljeyta, vilka oppningar kan vara i form av en spalt eller ett flertal hal. Technical background To provide supply air to a room in a dwelling or the like, valves mounted on, in or next to a window frame can be used. Such valves are usually elongate and control the flow through one or more through openings in the window frame or in an adjacent partition surface, which openings may be in the form of a gap or a plurality of slides.
For att reducera buller fran en sadan tilluftslOsning är det kant att montera ljuddampare i de ovan beskrivna en eller flera genomgaende 6ppningarna. Flera tillverkare tillhandahaller idag ljuddampare avsedda att monteras i en spaltformad oppning. In order to reduce noise from such a supply air solution, it is advisable to mount silencers in the one or more through-openings described above. Several manufacturers today provide silencers intended to be mounted in a slit-shaped opening.
I SE 522703 presenteras en sadan ljuddampande konstruktion som innefattar ett ljudabsorberande material som har ett antal hal vilka stracker genom materialet och är omgivet av material med en viss tjocklek. En nackdel med denna losning är att den inte alltid passar i applikationer som kraver en mycket lag bygghojd. SE 522703 presents such a sound-absorbing construction which comprises a sound-absorbing material which has a number of slides which extend through the material and are surrounded by material of a certain thickness. A disadvantage of this solution is that it does not always fit in applications that require a very low construction height.
En alternativ losning är utformad med tva parallella plattformade element, t.ex. platar, mellan vilka ett flertal distanselement är anordnade parallellt och pa avstand fran varandra. Avstandet mellan distanselementen bildar kanaler, dvs. ett flertal parallella kanaler skiljs at av distanselennenten. En nackdel med denna losning är att de i bullriga miljoer kan ge en otillracklig ljuddampning, dvs. den bullerdampande formagan är begransad. 2 Sammanfattning Ett syfte med foreliggande uppfinning är att astadkomma en ljuddampningsanordning med forbattrad ljuddampning, som foretradesvis samtidigt har ett lagt flodesmotstand, och foretradesvis aven gar att utforma med en lag byggh6jd. An alternative solution is designed with two parallel platform elements, e.g. plates, between which a plurality of spacer elements are arranged in parallel and at a distance from each other. The distance between the spacer elements forms channels, ie. a plurality of parallel channels are separated by the spacer element. A disadvantage of this solution is that in noisy environments they can give an insufficient sound damping, ie. the noise-vaporizing shape is limited. 2 Summary An object of the present invention is to provide a sound damping device with improved sound damping, which preferably simultaneously has a laid river resistance, and preferably also can be designed with a low construction height.
Detta och andra syften uppnas enligt foreliggande uppfinning med en ljuddampningsanordning enligt det oberoende patentkravet. FOredragna utf6ringsformer definieras i de beroende kraven. This and other objects are achieved according to the present invention with a sound damping device according to the independent claim. Preferred embodiments are defined in the dependent claims.
Enligt uppfinningen tillhandahalls en ljuddampningsanordning f6r montering i en genomgaende oppning i en fonsterkarm eller i en annan oppning genom en skiljeyta. Anordningen innefattar ett flertal luftkanaler som stracker sig langs med hela eller huvudsakligen hela ljuddampningsanordningens djup, vilka luftkanaler skiljs at av ljudabsorberande element som är fixerade relativt varandra. En f6rsta 5nde hos var och en av atminstone tva av de ljudabsorberande elementen har en annan bredd an respektive andra ande. De atminstone tva ljudabsorberande elementen av de ljudabsorberande elementen är vaxelvis anordnade sa, att vartannat av dessa atnninstone tva ljudabsorberande element smalnar av i ljuddampningsanordningens djupriktning, och resterande av dessa atminstone tva ljudabsorberande element utvidgas i djupriktningen, vilket armed gor att atminstone en av luftkanalerna är vinklad relativt ljuddampningsanordningens djupriktning. According to the invention, a sound damping device is provided for mounting in a through-opening in a window frame or in another opening through a partition surface. The device comprises a plurality of air ducts which extend along the entire or substantially entire depth of the sound damping device, which air ducts are separated by sound-absorbing elements which are fixed relative to each other. A first fifth of each of at least two of the sound absorbing elements has a different width than the second second, respectively. The at least two sound-absorbing elements of the sound-absorbing elements are arranged alternately so that each of these at least two sound-absorbing elements tapers in the deep direction of the sound-damping device, and the remainder of these at least two sound-absorbing elements are extended in the deep direction at least one angle. relative to the depth direction of the sound damping device.
Alternativt kan det sistnamnda beskrivas som att en forsta och en andra delmangd av namnda ljudabsorberande element är vaxelvis anordnade (dvs. anordnade efter eller bredvid varandra d5r vartannat element tillhor den f6rsta delmangden och de andra elementen tillhOr den andra delmangden), dar namnda fOrsta delmangd element är anordnade sa, att de smalnar av i ljudd5mparens djupriktning, och namnda andra delmangd element är anordnade sa, att de utvidgas i namnda djupriktning, vilket darmed g6r n5mnda luftkanaler vinklade relativt ljudd5mparens djupriktning. Alternatively, the latter may be described as a first and a second subset of said sound absorbing elements being arranged alternately (i.e. arranged after or next to each other where each second element belongs to the first subset and the second elements belong to the second subset), wherein said first subset of elements are arranged so that they taper in the depth direction of the sound absorber, and said second subset of elements are arranged so that they expand in said depth direction, thus making said air ducts angled relative to the depth direction of the sound adapter.
Uppfinningen är baserad pa insikten att kanaler som är vinklade relativt ljuddamparens djupriktning eller inkommande stromningsriktning ger en forbattrad ljuddampning. Uppfinningen ar vidare baserad pa insikten att den impedansskillnad 3 som uppstar mellan tva intilliggande ljudabsorberande element med olika bredd är fordelaktig med avseende pa ljuddampning i ett varierat brett frekvensomrade. The invention is based on the insight that channels which are angled relative to the depth direction or incoming flow direction of the sounder provide improved sound damping. The invention is further based on the realization that the impedance difference 3 which arises between two adjacent sound-absorbing elements of different widths is advantageous with respect to sound evaporation in a varied wide frequency range.
Det inses att ljuddamparens eller ljuddannpningsanordningens djupriktning avser en vinkelrat riktning mot den fonsterkarm eller skiljeyta genom vilken ljuddampningsanordningen är avsedd att monteras, eller med andra ord en riktning som är vinkelrat mot ljuddampningsanordningens fram- och baksida, dvs. dess inloppssida och utloppssida, eller med andra ord en riktning som är parallell med den huvudsakliga strOmningsriktningen in och/eller ut fran ljuddampningsanordningen. It will be appreciated that the deep direction of the muffler or muffler refers to a perpendicular direction to the window frame or partition through which the muffler is intended to be mounted, or in other words a direction perpendicular to the front and back of the muffler, i.e. its inlet side and outlet side, or in other words a direction parallel to the main flow direction in and / or out of the sound damping device.
I enlighet med en utforingsform av uppfinningen har namnda forsta andar och/eller namnda andra andar avrundade h6rn med en radie am minst 2 mm. Detta är fordelaktigt eftersom det ger ett lagre stromningsmotstand genom ljuddamparen. According to an embodiment of the invention, said first spirits and / or said second spirits have rounded corners with a radius of at least 2 mm. This is advantageous because it provides a lower flow resistance through the muffler.
I enlighet med en annan utforingsform av uppfinningen sa har namnda atminstone en av de luftkanaler som är vinklad en tvarsnittsarea som okar i ljuddampningsanordningens djupriktning eller i stromningsriktningen genom kanalen. Detta är fordelaktigt eftersom det ger ett lagre stronnningsnnotstand genom ljuddamparen. In accordance with another embodiment of the invention, said at least one of the air ducts which is angled has a cross-sectional area which increases in the deep direction of the sound vaporizing device or in the direction of flow through the duct. This is advantageous because it provides a lower throttle resistance through the muffler.
I enlighet med ytterligare en annan utforingsform av uppfinningen sa är de sidoytor hos namnda atminstone tva ljudabsorberande element som begransar eller definierar namnda atminstone en av namnda luftkanaler plana. I enlighet med ytterligare en annan utforingsform sa är atminstone en av de sidoytor has de atminstone tva de ljudabsorberande elementen som begransar eller definierar den atminstone en av luftkanalerna helt eller delvis konkav eller konvex. Med andra ord sa kan den atminstone en av luftkanalerna ha en icke-konstant tvarsnittsarea eller bredd. I utforingsformer dar atminstone en av de sidoytor hos de atminstone tva de ljudabsorberande elementen som begransar eller definierar den atminstone en av luftkanalerna är helt eller delvis konkav sa kan tvarsnittsarean eller bredden vara maximal vid en position mellan ljuddampningsanordningens inlopp och utlopp. Detta kan ocksa beskrivas som att den atminstone en av luftkanalerna är forsedd med en kavitet mellan inloppet och utloppet. Denna utforingsform är fordelaktig eftersom den 4 kan ge en okad ljuddannpning i ett specifikt frekvensonnrade, vilket frekvensonnrade beror pa den valda geometrin hos sidoytan eller sidoytorna. In accordance with yet another embodiment of the invention, the side surfaces of said at least two sound absorbing elements defining or defining said at least one of said air ducts are planar. According to yet another embodiment, at least one of the side surfaces has the at least two sound absorbing elements defining or defining the at least one of the air ducts completely or partially concave or convex. In other words, the at least one of the air ducts may have a non-constant cross-sectional area or width. In embodiments where at least one of the side surfaces of the at least two sound absorbing elements defining or defining the at least one of the air ducts is completely or partially concave, then the cross-sectional area or width may be maximum at a position between the inlet and outlet of the sound vaporizer. This can also be described as the at least one of the air ducts being provided with a cavity between the inlet and the outlet. This embodiment is advantageous because it 4 can give an increased sound generation in a specific frequency range, which frequency range depends on the selected geometry of the side surface or surfaces.
I enlighet med ytterligare en annan utf6ringsform av uppfinningen sá är atminstone en av de sidoytor hos namnda atminstone tva ljudabsorberande element som begransar eller definierar namnda atminstone en av namnda luftkanaler helt eller delvis konkav, och atminstone en andra motstaende sidoyta hos namnda atminstone tva ljudabsorberande element helt eller delvis konvex, sa att namnda atminstone en av namnda luftkanaler är bOjd eller krOkt i dess flodesriktning eller med andra ord har en b6jd eller kr6kt flodesriktning. Med andra ord sa är atminstone tva sidoytor som är riktade mot varandra och begransar namnda atminstone en av namnda luftkanaler utformade sa, att den ena av sidoytorna är helt eller delvis konkav och den andra av sidoytorna är helt eller delvis konvex. Formen eller krokningen hos den eller de sidoytor som är helt eller delvis konkav kan motsvara formen eller kr6kningen hos den eller de sidoytor som är helt eller delvis konvex, vilket armed gor att luftkanalens eller luftkanalernas bredd är konstant eller huvudsakligen konstant. Denna utforingsform är fordelaktig eftersom den kan ge ytterligare forbattrad ljuddampning. According to yet another embodiment of the invention, at least one of the side surfaces of said at least two sound absorbing elements defining or defining said at least one of said air ducts is wholly or partly concave, and at least one second opposite side surface of said at least two sound absorbing elements is completely or partially convex, so that said at least one of said air ducts is curved or curved in its river direction or in other words has a curved or curved river direction. In other words, so are at least two side surfaces facing each other and defining said at least one of said air ducts formed so that one of the side surfaces is completely or partially concave and the other of the side surfaces is completely or partially convex. The shape or curvature of the side surface (s) which is wholly or partly concave may correspond to the shape or curvature of the side surface (s) which are wholly or partly convex, which means that the width of the air duct or ducts is constant or substantially constant. This embodiment is advantageous because it can provide further improved sound damping.
I enlighet med ytterligare en annan utforingsform av uppfinningen sa har atminstone ett av de ljudabsorberande elementen en annan densitet an atminstone ett annat av de ljudabsorberande elementen. I enlighet med ytterligare en annan utforingsform av uppfinningen sá har de ljudabsorberande elementen som smalnar av i ljuddampningsanordningens djupriktning en annan densitet an de ljudabsorberande element som utvidgas i namnda djupriktning. Med andra ord sá har intilliggande ljudabsorberande element olika densitet. Att ha ljudabsorberande element med olika densitet är fordelaktigt eftersom det ger ytterligare mojlighet att stamma av ljuddampningen till den specifika bullertyp (biltrafik, tagtrafik, flyg etc.) som racier i den miljo dar ljuddampningsanordningen ska installeras. Med andra ord kan man darmed, forutom att justera geometrin hos de ljuddampande elementen (och darmed bl.a. kanalbredd, vinkel hos kanalerna, utvidgning hos kanalema), aven anpassa densiteten hos var och en av de ljudabsorberande elementen for att optimera ljuddampningen. Exempelvis kan det f6r laga frekvenser vara fordelaktigt att ha ljudabsorberande element med en relativt lag densitet, nnedan det for hoga frekvenser kan vara fordelaktigt att ha ett tatare material med hogre densitet. According to yet another embodiment of the invention, at least one of the sound absorbing elements has a different density than at least another of the sound absorbing elements. According to yet another embodiment of the invention, the sound-absorbing elements which taper in the deep direction of the sound-damping device have a different density than the sound-absorbing elements which expand in the said deep direction. In other words, adjacent sound absorbing elements have different densities. Having sound-absorbing elements with different densities is advantageous because it provides additional possibility to control the sound damping to the specific type of noise (car traffic, train traffic, aircraft, etc.) that racers in the billion sound damping device are to be installed. In other words, in addition to adjusting the geometry of the sound damping elements (and thus, among other things, channel width, angle of the channels, widening of the channels), one can also adjust the density of each of the sound absorbing elements to optimize the sound damping. For example, it may be advantageous for low frequencies to have sound-absorbing elements with a relatively low density, while for high frequencies it may be advantageous to have a tatter material with a higher density.
I enlighet med ytterligare en annan utf6ringsform av uppfinningen sá har atminstone ett av de ljudabsorberande elementen en icke-konstant eller varierande densitet, varvid densiteten vid en f6rsta ande hos det atminstone ett av de ljudabsorberande elementen skiljer sig fran densiteten vid dess andra ande. Detta är fOrdelaktigt eftersom det ger ytterligare frihetsgrader att stamma av ljuddampningen till den specifika bullertyp (biltrafik, tagtrafik, flyg etc.) som racier i den miljO dar ljuddampningsanordningen ska installeras. I en utforingsform är densiteten h6gre vid en ande an vid den andra, bredare, anden, och sjunker gradvis, exennpelvis linjart, daremellan. Pa sa vis ger den bredare anden med lag densitet god dampning vid laga frekvenser och den smalare anden med hog densitet en god dampning vid hoga frekvenser. I en annan utforingsform varierar densiteten i sidled, exem pelvis kan de ljuddampande elementen utformas sa att den ena halvan har en densitet och den andra halvan en annan densitet, dvs. de är delade med avseende pa densiteten i djupriktningen. According to yet another embodiment of the invention, at least one of the sound absorbing elements has a non-constant or varying density, the density at a first spirit of the at least one of the sound absorbing elements differing from the density at its second spirit. This is advantageous because it provides additional degrees of freedom to control the sound damping to the specific type of noise (car traffic, train traffic, flights, etc.) that racers in the environment where the sound damping device is to be installed. In one embodiment, the density is higher at one spirit than at the other, wider, the spirit, and decreases gradually, for example linearly, in between. In this way, the wider spirit with low density gives good steaming at low frequencies and the narrower spirit with high density gives good steaming at high frequencies. In another embodiment the density varies laterally, for example the sound-damping elements can be designed so that one half has a density and the other half a different density, i.e. they are divided with respect to the density in the depth direction.
I enlighet med ytterligare en annan utforingsform av uppfinningen sa innefattar ljuddampningsanordningen forsta och andra plattformade element anordnade parallellt och pa avstand fran varandra, dar de ljudabsorberande elementen är fixerade mellan de plattformade elementen. De ljudabsorberande elementen kan ocksa vara plattformade med ett huvudsakligen rektangulart tvarsnitt. Detta ger valdefinierade kanaler med ett rektangulart tvarsnitt som begransas uppat och nedat av de plattformade elementen och i sidled av tva ljudabsorberande element. De ljudabsorberande elementen kan i ytterligare en annan utfOringsform beskrivas som huvudsakligen triangelformade. Med andra ord sa har de ljudabsorberande elementen ett huvudsakligen triangelformat tvarsnitt sett ovanifran. According to yet another embodiment of the invention, the sound damping device comprises first and second platform-shaped elements arranged parallel and at a distance from each other, where the sound-absorbing elements are fixed between the platform-shaped elements. The sound-absorbing elements can also be platformed with a substantially rectangular cross-section. This provides select channels with a rectangular cross-section that is delimited up and down by the platform elements and laterally by two sound-absorbing elements. In yet another embodiment, the sound-absorbing elements can be described as being substantially triangular. In other words, the sound-absorbing elements have a substantially triangular cross-section seen from above.
I enlighet med ytterligare en annan utf6ringsform av uppfinningen sa har ljuddampningsanordningen en h6jd i intervallet 5-500 mm, foretradesvis en h6jd mindre an 50 mm, eller mindre an 15mm. 6 Kort beskrivning av ritningarna Dessa och andra aspekter av den foreliggande uppfinningen kommer nu beskrivas mer i detalj med hanvisning till de bifogade ritningarna, vilka visar f6r narvarande foredragna utf6ringsformer av uppfinningen, varvid: fig. 1 visar en kand ljuddampningsanordning, fig. 2 visar en ljuddampningsanordning enligt en f6rsta utf6ringsform av uppfinningen, fig. 3 visar en ljuddampningsanordning enligt en andra utf6ringsform av uppfinningen, fig. 4 visar en ljuddampningsanordning enligt en tredje utf6ringsform av uppfinningen, och fig. 5 visar en ljuddampningsanordning enligt en fjarde utforingsform av uppfinningen. According to yet another embodiment of the invention, the sound damping device has a height in the range 5-500 mm, preferably a height less than 50 mm, or less than 15 mm. 6 Brief description of the drawings These and other aspects of the present invention will now be described in more detail with reference to the accompanying drawings, which show presently preferred embodiments of the invention, in which: Fig. 1 shows a known sound damping device, Fig. 2 shows a sound damping device according to a first embodiment of the invention, Fig. 3 shows a sound damping device according to a second embodiment of the invention, Fig. 4 shows a sound damping device according to a third embodiment of the invention, and Fig. 5 shows a sound damping device according to a fourth embodiment of the invention.
Detaljerad beskrivning av foredragna utforingsformer Figur 1 visar en perspektivvy av en del av en kand ljuddampningsanordning 1 med ett forsta plattformat element 2 pa vilket distanselement 3a-e är anordnade parallellt och pa avstand tan varandra. MeIlan distanselementen 3a-e bildas parallella kanaler 4a-d genom vilka det inkommande flodet F fordelas. Ljuddampningsanordningen innefattar ocksa ett andra plattformat element som inte visas i figuren. Det andra plattformade elementet är av samma typ som det forsta plattformade elementet och är anordnat parallellt med detta pa distanselementen 3a-e for att pa sá vis utgora en Ovre begransning av kanalerna 4a-d. Kanalerna definieras alltsa av de tva plattformade elementen och distanselementen. Distanselementen 3a-e är av ett ljudabsorberande material fOr att ge den Onskade ljuddampande effekten. De platfformade elementen är utformade i plast, metall, papp eller liknande. Detailed description of preferred embodiments Figure 1 shows a perspective view of a part of a known sound damping device 1 with a first platform element 2 on which spacer elements 3a-e are arranged in parallel and at a distance from each other. Between the spacer elements 3a-e, parallel channels 4a-d are formed through which the incoming river F is distributed. The sound damping device also comprises a second platform element which is not shown in the figure. The second platform element is of the same type as the first platform element and is arranged parallel thereto on the spacer elements 3a-e so as to form an upper boundary of the channels 4a-d. The channels are thus defined by the two platform elements and the spacer elements. The spacer elements 3a-e are of a sound-absorbing material to give the desired sound-damping effect. The flat-shaped elements are designed in plastic, metal, cardboard or the like.
Figur 2 visar en planvy av en del av en ljuddampningsanordning 11 enligt en forsta utforingsform av uppfinningen. Ljudabsorberande element 13a-e är anordnade pa avstand Than varandra pa ett forsta plattformat element 12. MeIlan de ljudabsorberande elementen 13a-e bildas kanaler 14a-d. De ljudabsorberande elementen har ett rektangulart tvarsnitt sett i ljuddampningsordningens djupriktning Y, vilket gor att aven kanalerna har ett rektangulart tvarsnitt. 7 Ljuddannpningsanordningen innefattar ocksa ett andra plattformat element som inte visas i figuren. Det andra plattformade elementet är av samma typ som det forsta plattformade elementet och är anordnat parallellt med detta pa de ljudabsorberande elementen 13a-e f6r att pa sá vis utgora en ovre begransning av kanalerna 14a-d. En forsta ande 13a1-el hos var och en av de ljudabsorberande elementen har en mindre bredd an den andra anden 13a2-e2, och de ljudabsorberande elementen har darmed huvudsakligen triangelformade tvarsnitt sett i en vinkelrat riktning relativt det f6rsta plattformade elementet 12. De ljudabsorberande elementen är vaxelvis anordnade sa att vartannat element 13a, 13c, 13e smalnar av i djupriktningen Y, och att de andra elementen 13b, 13d utvidgas i djupriktningen. Detta gor att kanalerna 14a-d ar vinklade relativt djupriktningen Y. I denna utforingsform sa smalnar elementen 13a, 13c, 13e av med samnna vinkel som elementen 13b, 13d utvidgas, vilket darmed gor att kanalerna 14a-d har en konstant bredd. Ljuddampningsanordningen har ett langstrackt tvarsnitt, dvs. har en avsevart store bredd an hojd. De ljudabsorberande elementens forsta och andra andar har avrundade h6rn i djupriktningen. Figure 2 shows a plan view of a part of a sound damping device 11 according to a first embodiment of the invention. Sound-absorbing elements 13a-e are spaced apart on a first platform element 12. Between the sound-absorbing elements 13a-e channels 14a-d are formed. The sound-absorbing elements have a rectangular cross-section seen in the deep direction Y of the sound-damping order, which means that the channels also have a rectangular cross-section. 7 The sound forming device also comprises a second platform element which is not shown in the figure. The second platform element is of the same type as the first platform element and is arranged parallel thereto on the sound-absorbing elements 13a-e so as to constitute an upper limitation of the channels 14a-d. A first spirit 13a1-el of each of the sound-absorbing elements has a smaller width than the second spirit 13a2-e2, and the sound-absorbing elements thus have substantially triangular cross-sections seen in a perpendicular direction relative to the first platform-shaped element 12. The sound-absorbing elements are arranged alternately so that every other element 13a, 13c, 13e tapers in the deep direction Y, and that the other elements 13b, 13d expand in the deep direction. This causes the channels 14a-d to be angled relative to the depth direction Y. In this embodiment, the elements 13a, 13c, 13e taper at the same angle as the elements 13b, 13d are widened, thus causing the channels 14a-d to have a constant width. The sound damping device has an elongated cross section, ie. has a considerable width and height. The first and other spirits of the sound-absorbing elements have rounded corners in the deep direction.
Figur 3 visar en planvy av en del av en ljuddannpningsanordning 21 enligt en andra utf6ringsform av uppfinningen. Ljudabsorberande element 23a-e är anordnade pa avstand Iran varandra pa ett forsta plattformat element 22. Mellan de ljudabsorberande elementen 23a-e bildas kanaler 24a-d. Ljuddampningsanordningen innefattar ocksa ett andra plattformat element som inte visas i figuren. Det andra plattformade elementet är av samma typ som det forsta plattformade elementet och är anordnat parallellt med detta med de ljudabsorberande elementen daremellan. Denna andra utf6ringsform skiljer sig fran den f6rsta utf6ringsformen genom att kanalerna 24a-d har en bredd eller tvarsnittsarea som Okar i ljuddampningsanordningens djupriktning Y. Sonn framgar ur fig. 3 sa har kanalerna en bredd b1 vid inloppet och en bredd b2 vid utloppet, dar b2>b1. I detta fall sa uppnas denna okning av bredd eller tvarsnittsarea genom att elementen 23a, 23c, 23e smalnar av snabbare, dvs. med en storre vinkel, an vad elementen 23b, 23d utvidgas. Med andra ord sa är forhallandet mellan bredderna has andra och f6rsta anden has elementen 23a, 23c, 23e storre an hos elementen 23b, 23d. 8 Figur 4 visar en planvy av en del av en ljuddannpningsanordning 31 enligt en tredje utforingsform av uppfinningen. Ljudabsorberande element 33a-e ar anordnade pa avstand Iran varandra pa ett forsta plattformat element 32. MeIlan de ljudabsorberande elementen 33a-e bildas kanaler 34a-d. Ljuddampningsanordningen innefattar ocksa ett andra plattformat element som inte visas i figuren. Det andra plattformade elementet ar av samma typ som det forsta plattformade elementet och ar anordnat parallellt med detta med de ljudabsorberande elementen daremellan. Denna tredje utforingsform skiljer sig Than den f6rsta utf6ringsformen genom att kanalerna 34a-d har icke-konstant bredd eller tvarsnittsarea, dar bredden eller tvarsnittsarean ar maximal mellan ljuddampningsanordningens inlopp och utlopp. I figuren motsvaras den maximala bredden av b3 som ar storre an bredderna b1, b2 vid inloppet respektive utloppet. Detta kan ocksa beskrivas som att kanalerna 34a-d ar forsedda med en kavitet mellan inloppet och utloppet. Detta astadkoms genom att de ljudabsorberande elementen 33b, 33d som utvidgas i djupriktningen har sidoytor 33b3-b4, 33d3-d4 som ar delvis konkava. Sonn framgar ur figuren begransar dessa sidoytor kanalerna 34a-d fran ett hall. I andra utf6ringsformer sa kan istallet en eller flera av de ljudabsorberande element 33a, 33c, 33e som avsmalnar i djupriktningen ha en eller bada sidoytor som ar helt eller delvis konkava. I ytterligare andra utforingsformer sa kan ett, flera eller samtliga ljudabsorberande element ha en eller !Dada sidoytor som ar helt eller delvis konkava eller konvexa. Figure 3 shows a plan view of a part of a sound forming device 21 according to a second embodiment of the invention. Sound-absorbing elements 23a-e are arranged at a distance from each other on a first platform element 22. Channels 24a-d are formed between the sound-absorbing elements 23a-e. The sound damping device also comprises a second platform element which is not shown in the figure. The second platform element is of the same type as the first platform element and is arranged parallel to it with the sound-absorbing elements therebetween. This second embodiment differs from the first embodiment in that the channels 24a-d have a width or cross-sectional area which increases in the depth direction Y of the sound damping device. Sonn is shown in Fig. 3, so the channels have a width b1 at the inlet and a width b2 at the outlet, where b2 > b1. In this case, this increase in width or cross-sectional area is achieved by the elements 23a, 23c, 23e narrowing faster, i.e. with a larger angle, than what the elements 23b, 23d expand. In other words, the ratio between the widths of the second and first spirits of the elements 23a, 23c, 23e is greater than that of the elements 23b, 23d. 8 Figure 4 shows a plan view of a part of a sound forming device 31 according to a third embodiment of the invention. Sound-absorbing elements 33a-e are arranged at a distance from each other on a first platform element 32. Between the sound-absorbing elements 33a-e channels 34a-d are formed. The sound damping device also comprises a second platform element which is not shown in the figure. The second platform element is of the same type as the first platform element and is arranged parallel to it with the sound-absorbing elements therebetween. This third embodiment differs from the first embodiment in that the channels 34a-d have a non-constant width or cross-sectional area, where the width or cross-sectional area is maximum between the inlet and outlet of the sound-evaporating device. In the figure, the maximum width of b3 which is larger than the widths b1, b2 at the inlet and the outlet, respectively, corresponds. This can also be described as the channels 34a-d being provided with a cavity between the inlet and the outlet. This is achieved in that the sound-absorbing elements 33b, 33d which expand in the deep direction have side surfaces 33b3-b4, 33d3-d4 which are partially concave. As can be seen from the figure, these side surfaces delimit the channels 34a-d from a hall. In other embodiments, instead, one or more of the sound absorbing elements 33a, 33c, 33e which taper in the deep direction may have one or both side surfaces which are completely or partially concave. In still other embodiments, one, several or all of the sound absorbing elements may have one or more lateral surfaces which are wholly or partly concave or convex.
Figur 5 visar en planvy av en del av en ljuddampningsanordning 41 enligt en fjarde utforingsform av uppfinningen. Ljudabsorberande element 43a-e ar anordnade pa avstand Iran varandra pa ett fOrsta plattformat element 42. MeIlan de ljudabsorberande elementen 43a-e bildas kanaler 44a-d. Ljuddampningsanordningen innefattar ocksa ett andra plattformat element som inte visas i figuren. Det andra plattformade elementet ar av samma typ som det forsta plattformade elementet och ar anordnat parallellt med detta med de ljudabsorberande elementen daremellan. Denna fjarde utforingsform skiljer sig Than den tredje utf6ringsformen genom att kanalerna ar svangda eller krokta, och har huvudsakligen konstant tvarsnittsarea och bredd. Detta astadkoms genom att de ljudabsorberande element 43b, 43d som utvidgas i djupriktningen har sidoytor 43b3-b4, 43d3-d4 som ar delvis konkava, och att de ljudabsorberande element 43a, 43c, 43e som smalnar av i djupriktningen har sidoytor 43a4, 43c3-c4, 43e3 som ar delvis konvexa med huvudsakligen samma 9 krokning som de delvis konkava sidoytorna 33b3-b4, 43d3-d4. I ytterligare andra utforingsformer sa kan ett, flera eller samtliga ljudabsorberande element ha en eller bade sidoytor som är helt eller delvis konkava eller konvexa. Figure 5 shows a plan view of a part of a sound damping device 41 according to a fourth embodiment of the invention. Sound-absorbing elements 43a-e are arranged at a distance from each other on a first platform element 42. Between the sound-absorbing elements 43a-e channels 44a-d are formed. The sound damping device also comprises a second platform element which is not shown in the figure. The second platform element is of the same type as the first platform element and is arranged parallel to it with the sound-absorbing elements therebetween. This fourth embodiment differs from the third embodiment in that the channels are curved or curved, and have a substantially constant cross-sectional area and width. This is achieved in that the sound-absorbing elements 43b, 43d which expand in the deep direction have side surfaces 43b3-b4, 43d3-d4 which are partially concave, and that the sound-absorbing elements 43a, 43c, 43e which taper in the deep direction have side surfaces 43a4, 43c3-c4 , 43e3 which are partly convex with essentially the same 9 curvature as the partially concave side surfaces 33b3-b4, 43d3-d4. In still other embodiments, one, several or all of the sound-absorbing elements may have one or both side surfaces which are wholly or partly concave or convex.
I de forsta, andra, tredje och fjarde utforingsformerna som beskrivits oven sa har samtliga ljuddampande element samma och konstanta densitet. Andra utforingsformer motsvarar de fOrsta, andra, tredje och fjarde utfOringsformerna, men med skillnaden att de ljuddampande elementen 13a, 13c, 13e, 23a, 23c, 23e, 33a, 33c, 33e som smalnar av i ljuddampningsanordningens djupriktning har en annan densitet an de ljuddampande elementen 13b, 13d, 23b, 23d, 33b, 33d, som utvidgas i namnda djupriktning, dvs. intilliggande ljuddampande element har olika densitet. Ytterligare andra utf6ringsformer motsvarar nagon av de f6rsta, andra och tredje utforingsformerna, men med skillnaden att vart och ett av de ljudabsorberande elementen har en varierande densitet, dar densiteten vid en forsta ande skiljer sig tan densiteten vid dess andra ande. De ljuddampande elementen kan ocksa utforas sa att de delas i sin langsled Y-riktning, dar den ena delen har en densitet och den andra en annan densitet. In the first, second, third and fourth embodiments described above, all sound-damping elements have the same and constant density. Other embodiments correspond to the first, second, third and fourth embodiments, but with the difference that the sound-damping elements 13a, 13c, 13e, 23a, 23c, 23e, 33a, 33c, 33e which taper in the deep direction of the sound-damping device have a different density than the sound-damping the elements 13b, 13d, 23b, 23d, 33b, 33d, which are expanded in the said deep direction, i.e. adjacent sound-absorbing elements have different densities. Still other embodiments correspond to some of the first, second and third embodiments, but with the difference that each of the sound absorbing elements has a varying density, where the density of a first spirit differs from the density of its second spirit. The sound-damping elements can also be designed so that they are divided in their longitudinal direction Y-direction, where one part has a density and the other a different density.
Beskrivningen oven och de tillhorande ritningarna är att betrakta som ett ickebegransande exempel av uppfinningen. Fackmannen inser att ett flertal andringar och modifikationer kan gores inom ramen for uppfinningen, t.ex. kan ljuddampningsanordningen innefatta bade raka och vinklade kanaler, och de ljudabsorberande elementen i en och samma ljuddampningsanordning kan ha olika form och olika densiteter sinsemellan. Kanaltvarsnitten behover heller inte vara rektangulara utan kan ha en valfri form som skapas av hur de ljuddampande elementens kanter formas. Aven om figurerna visar horisontellt anordnade ljuddampningsanordningar sa inses det att de lika garna kan anordnas vertikalt eller med annan orientering. Skyddsomfanget definieras av de bifogade patentkraven. The description above and the accompanying drawings are to be considered as a non-limiting example of the invention. Those skilled in the art will appreciate that a number of changes and modifications may be made within the scope of the invention, e.g. the sound damping device may comprise both straight and angled channels, and the sound absorbing elements in one and the same sound damping device may have different shapes and different densities between them. The channel cross-sections also do not have to be rectangular but can have an optional shape created by how the edges of the sound-damping elements are formed. Although the figures show horizontally arranged sound damping devices, it will be appreciated that the like yarns may be arranged vertically or with a different orientation. The scope of protection is defined by the appended claims.
Claims (12)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1451077A SE541181C2 (en) | 2014-09-15 | 2014-09-15 | Sound attenuator for continuous opening in window sill or other partition surface |
| EP14187298.6A EP3002405A3 (en) | 2014-09-15 | 2014-10-01 | Silencing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1451077A SE541181C2 (en) | 2014-09-15 | 2014-09-15 | Sound attenuator for continuous opening in window sill or other partition surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE1451077A1 true SE1451077A1 (en) | 2016-03-16 |
| SE541181C2 SE541181C2 (en) | 2019-04-23 |
Family
ID=51726332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1451077A SE541181C2 (en) | 2014-09-15 | 2014-09-15 | Sound attenuator for continuous opening in window sill or other partition surface |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3002405A3 (en) |
| SE (1) | SE541181C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6574663B2 (en) * | 2015-09-30 | 2019-09-11 | 三機工業株式会社 | Silent ventilation louver in the ceiling |
| CA2957902C (en) * | 2016-02-24 | 2019-05-07 | VAW Systems Ltd. | Duct mounted sound attenuating baffle with an internally suspended mass layer |
| GB2605371A (en) * | 2021-03-29 | 2022-10-05 | Bae Systems Plc | Acoustic absorbing structures |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE521580A (en) * | ||||
| GB1329862A (en) * | 1970-09-22 | 1973-09-12 | Sound Attenuators Ltd | Acoustic attenuator |
| GB1344268A (en) * | 1970-11-05 | 1974-01-16 | Sound Attenuators Ltd | Sound attenuating unit |
| IT1118938B (en) * | 1979-10-05 | 1986-03-03 | Fiat Ricerche | VENTILATION SHUTTER INCLUDING A PLURALITY OF PROFILED BLINDS |
| DE3200210C2 (en) * | 1982-01-07 | 1986-04-17 | Heinz Georg Hünibach Thun Baus | Ventilation device |
| WO1989000233A1 (en) * | 1987-07-02 | 1989-01-12 | John George Hamilton | Improved vent for windows and like apertures |
| SE522703C2 (en) | 2000-12-04 | 2004-03-02 | Asservo Ab | Sound-insulating construction comprises sound-absorbent material placed or incorporated in air or gas intake, has width or depth between 50 and 200 mm and length or diameter dependent upon rate of flow |
| CA2578532C (en) * | 2004-05-07 | 2014-02-18 | Silenceair International Pty Limited | A ventilation device and frame system |
| ES1065300Y (en) * | 2007-04-23 | 2007-10-16 | Dir Air Oy | AIR FLOW REGULATOR |
-
2014
- 2014-09-15 SE SE1451077A patent/SE541181C2/en unknown
- 2014-10-01 EP EP14187298.6A patent/EP3002405A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| SE541181C2 (en) | 2019-04-23 |
| EP3002405A2 (en) | 2016-04-06 |
| EP3002405A3 (en) | 2016-09-07 |
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