A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SOUND-DEADENING SYSTEM
To provide a sound-deadening system that can achieve both a high ventilation characteristic and sound-proof performance, can deaden a plurality of resonance sounds, and is high in versatility without a need for designing to adapt to a ventilation sleeve.SOLUTION: A sound-deadening system 10k has a sound-deadening device installed in a ventilation sleeve 12. The sound-deadening device 14 is aimed at deadening a sound with a frequency of first resonance of the ventilation sleeve, and comprises: a sound-deadening device 22 that has a hollow part 30 and an opening part 32, and is arranged on one end surface side of a wall; and a sound absorption material that is arranged in the hollow part or at a position covering the opening part. The opening part of the sound-deadening device is arranged facing a center axis side of the ventilation sleeve. A depth Lof the hollow part in an advancement direction of a sound wave in the sound-deadening device is larger than a width of the opening part in an axis direction of the ventilation sleeve. Let a wavelength of a sound wave in a resonance frequency of the first resonance of the ventilation sleeve be λ, then the depth Lof the hollow part satisfies 0.011×λ
【課題】高い通気性と防音性能を両立することができ、また、複数の共鳴音を消音することができ、また、通気スリーブに合わせた設計が不要で汎用性の高い消音システムを提供する。【解決手段】通気スリーブ１２に消音装置が設置された消音システム１０ｋであって、消音装置１４は、通気スリーブの第一共鳴の周波数の音を消音するものであり、空洞部３０および開口部３２を有し、壁の一方の端面側に配置される消音器２２と、空洞部内または開口部を覆う位置に配置される吸音材とを備える。消音器の開口部は、通気スリーブの中心軸側を向いて配置されており、消音器内の音波の進行方向における空洞部の深さＬdは、通気スリーブの軸方向における開口部の幅よりも大きく、通気スリーブの第一共鳴の共鳴周波数における音波の波長をλとすると、空洞部の深さＬdは０．０１１×λ＜Ｌd＜０．２５×λを満たす。【選択図】図３３
SOUND-DEADENING SYSTEM
To provide a sound-deadening system that can achieve both a high ventilation characteristic and sound-proof performance, can deaden a plurality of resonance sounds, and is high in versatility without a need for designing to adapt to a ventilation sleeve.SOLUTION: A sound-deadening system 10k has a sound-deadening device installed in a ventilation sleeve 12. The sound-deadening device 14 is aimed at deadening a sound with a frequency of first resonance of the ventilation sleeve, and comprises: a sound-deadening device 22 that has a hollow part 30 and an opening part 32, and is arranged on one end surface side of a wall; and a sound absorption material that is arranged in the hollow part or at a position covering the opening part. The opening part of the sound-deadening device is arranged facing a center axis side of the ventilation sleeve. A depth Lof the hollow part in an advancement direction of a sound wave in the sound-deadening device is larger than a width of the opening part in an axis direction of the ventilation sleeve. Let a wavelength of a sound wave in a resonance frequency of the first resonance of the ventilation sleeve be λ, then the depth Lof the hollow part satisfies 0.011×λ
【課題】高い通気性と防音性能を両立することができ、また、複数の共鳴音を消音することができ、また、通気スリーブに合わせた設計が不要で汎用性の高い消音システムを提供する。【解決手段】通気スリーブ１２に消音装置が設置された消音システム１０ｋであって、消音装置１４は、通気スリーブの第一共鳴の周波数の音を消音するものであり、空洞部３０および開口部３２を有し、壁の一方の端面側に配置される消音器２２と、空洞部内または開口部を覆う位置に配置される吸音材とを備える。消音器の開口部は、通気スリーブの中心軸側を向いて配置されており、消音器内の音波の進行方向における空洞部の深さＬdは、通気スリーブの軸方向における開口部の幅よりも大きく、通気スリーブの第一共鳴の共鳴周波数における音波の波長をλとすると、空洞部の深さＬdは０．０１１×λ＜Ｌd＜０．２５×λを満たす。【選択図】図３３
SOUND-DEADENING SYSTEM
消音システム
SUGAWARA YOSHIHIRO (author) / YAMAZOE SHOGO (author) / HAKUTA SHINYA (author) / OTSU AKIHIKO (author)
2019-04-04
Patent
Electronic Resource
Japanese
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