Sound attenuating air vent
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0394210
(2010-09-03)
|
등록번호 |
US-8511426
(2013-08-20)
|
우선권정보 |
GB-0915517.7 (2009-09-04) |
국제출원번호 |
PCT/GB2010/001672
(2010-09-03)
|
§371/§102 date |
20120516
(20120516)
|
국제공개번호 |
WO2011/027123
(2011-03-10)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Ove Arup & Partners International Ltd
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
8 |
초록
▼
A sound attenuating air vent comprises: an air path and a discontinuous sound absorbing lining around at least a part of the air path. A method of designing such a sound attenuating air vent comprises: determining a target attenuation performance based on the noise source and the receiver noise sens
A sound attenuating air vent comprises: an air path and a discontinuous sound absorbing lining around at least a part of the air path. A method of designing such a sound attenuating air vent comprises: determining a target attenuation performance based on the noise source and the receiver noise sensitivity and the separating construction, and determining a desired arrangement for the discontinuous lining and/or vent based on the target attenuation performance.
대표청구항
▼
1. A sound attenuating air vent for passive ventilation between two areas of a building or between a building and the outside, the air vent comprising: an air path and a discontinuous sound absorbing lining around at least a part of the air path, and sound reflecting material between areas of the di
1. A sound attenuating air vent for passive ventilation between two areas of a building or between a building and the outside, the air vent comprising: an air path and a discontinuous sound absorbing lining around at least a part of the air path, and sound reflecting material between areas of the discontinuous sound absorbing lining; wherein the discontinuous sound absorbing lining comprises strips of sound absorbing material positioned in the vent so as to be generally perpendicular to the direction of the air flow and sound propagation; wherein the sound reflecting material comprises ribs of sound reflecting material provided between some or all of the strips of sound absorbing material. 2. The sound attenuating air vent as claimed in claim 1, wherein the air path is a direct air path. 3. The sound attenuating air vent as claimed in claim 1, arranged for placement between a sound source and sound receiver out of plane with the sound source and/or wherein the air path has a length such that line of sight between source and receiver is broken. 4. The sound attenuating air vent as claimed in claim 1, wherein the sound reflecting material substantially fills gaps between the discontinuous sound absorbing lining to thereby form a substantially continuous lining in the vent. 5. The sound attenuating air vent as claimed in claim 1, wherein a width and a spacing of the strips and/or ribs is selected based on a desired frequency range to be attenuated. 6. The sound attenuating air vent as claimed in claim 1, wherein a period of discontinuity of the strips and/or ribs is selected to be about a half-wavelength of the fundamental frequency in a frequency range to be attenuated. 7. The sound attenuating air vent as claimed in claim 3, wherein the discontinuous sound absorbing lining is arranged so as to include multiple periods of discontinuity selected to correspond to a desired set of frequencies in a frequency range to be attenuated. 8. The sound attenuating air vent as claimed in claim 1, wherein the vent has a shape, dimensions, and/or discontinuous lining selected based on a target performance. 9. The sound attenuating air vent as claimed in claim 1, comprising ribs of sound reflecting material integrally formed with the structure of the vent. 10. A lining for a sound attenuating air vent for passive ventilation between two areas of a building or between a building and the outside, the lining comprising a discontinuous layer of sound absorbing material and sound reflecting material between areas of the discontinuous sound absorbing material; wherein the discontinuous sound absorbing material comprises strips of sound absorbing material positioned in the vent so as to be generally perpendicular to the direction of the air flow and sound propagation; and wherein the sound reflecting material comprises ribs of sound reflecting material provided between some or all of the strips of sound absorbing material. 11. The lining as claimed in claim 10, comprising a backing layer, wherein the sound absorbing material is mounted on the backing layer in order to form the discontinuous layer of sound absorbing material. 12. A partition which, in use, is between a noise source and a noise receiver, the partition comprising a sound attenuating air vent comprising: an air path and a discontinuous sound absorbing lining around at least a part of the air path, and/or an air vent lined with a lining as claimed in claim 10, the vent(s) being positioned to be out of plane with the sound source and or receiver. 13. A method of providing a sound attenuating air vent for passive ventilation between two areas of a building or between a building and the outside, the method comprising: providing a discontinuous sound absorbing lining around at least a part of an air path through the air vent, the sound absorbing comprising strips of sound absorbing material positioned in the vent so as to be generally perpendicular to the direction of the air flow and sound propagation; and providing sound reflecting material between areas of sound absorbing material;wherein in that the sound reflecting material comprises ribs of sound reflecting material provided between some or all of the strips of sound absorbing mate. 14. The method as claimed in claim 13, comprising locating the sound attenuating air vent out of plane with a sound source and/or sound receiver. 15. The method as claimed in claim 13, comprising moulding walls of the vent structure with internal ribs of sound reflecting material. 16. The method as claimed in claim 13, wherein the lining comprises discontinuous elements fixed to a backing layer, and the method comprises a step of installing the discontinuous lining by securing the backing layer to an internal surface of the air vent. 17. The method as claimed in claim 13, comprising providing a vent comprising an air path and a discontinuous sound absorbing lining around at least one of at least a part of the air path and a lining comprising a backing layer, wherein the sound absorbing material is mounted on the backing layer in order to form the discontinuous layer of sound absorbing material to thereby provide a target sound attenuation performance, wherein the target sound attenuation performance is determined based on the unwanted noise at the source, the desired noise level at the receiver and the separating construction between source and receiver. 18. A method as claimed in claim 17, comprising determining required vent shape and dimensions based on known relationships between vent shape and dimensions and the vent's acoustic and/or aerodynamic characteristics in order to meet acoustic and/or aerodynamic performance criteria set by the user; and/or determining the lining arrangement based on a model of the acoustic performance of the lining and on acoustic performance criteria set by the user. 19. The method as claimed in claim 17 comprising matching the user's needs to the performance of one of a number of predetermined lining arrangements, and providing the user with a recommendation for an appropriate lining arrangement selected from the predetermined arrangements. 20. The method as claimed in claim 17, wherein the lining comprises sound absorbing material between areas of the discontinuous sound absorbing lining.
이 특허에 인용된 특허 (8)
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Dear Terrence A. (Elkton MD) Ingard Karl U. (Kittery Point MA), Acoustically inactive corrugated structure.
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Yazici Muammer,CAX ; Richarz Werner,CAX, Air handling structure for fan inlet and outlet.
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Ross David F. (Scottsdale AZ) Lyon Craig A. (Mesa AZ), Compact muffler apparatus and associated methods.
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Ruach, Evan, Duct silencer.
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Zarnick Bernard, Duct silencer.
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Furse John H. (Jefferson County KY) Noreen Robert A. (Jefferson County KY), Sound attenuating apparatus and method of forming the same.
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Breitscheidel Hans-Ulrich (Hrte 6 Siegburg DEX) Lorry Cosmas (Hrte 6 Niederkassel DEX) Rehlen Helmut (Hrte 6 7951 Ingoldingen DEX) Roellinghoff Jrgen (Fohrenweg 9 7950 Mettenburg DEX), Sound-insulated flow duct and process for the manufacture thereof.
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Ehrich ; Frederic Franklin, Spiral strip acoustic treatment.
이 특허를 인용한 특허 (3)
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Roberge, Martin; Boyko, Michael; Anderson, Brian J., Air diffuser for vacuum fan of planters.
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Disimile, Peter, Fluid flow noise mitigation structure and method.
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LaPree, Scott R.; Mahaney, Jr., Howard V.; Mroz, Stephen P.; O'Connell, Michael D., Method and apparatus for acoustical noise reduction and distributed airflow.
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