JP2002123259A - Acoustical panel - Google Patents
Acoustical panelInfo
- Publication number
- JP2002123259A JP2002123259A JP2000314397A JP2000314397A JP2002123259A JP 2002123259 A JP2002123259 A JP 2002123259A JP 2000314397 A JP2000314397 A JP 2000314397A JP 2000314397 A JP2000314397 A JP 2000314397A JP 2002123259 A JP2002123259 A JP 2002123259A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- noise
- sound
- frequency
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010409 thin film Substances 0.000 claims abstract description 100
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 239000011358 absorbing material Substances 0.000 claims description 19
- 239000011491 glass wool Substances 0.000 abstract description 15
- 238000009413 insulation Methods 0.000 description 30
- 230000005540 biological transmission Effects 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 102100029777 Eukaryotic translation initiation factor 3 subunit M Human genes 0.000 description 1
- 101001012700 Homo sapiens Eukaryotic translation initiation factor 3 subunit M Proteins 0.000 description 1
- 241000981595 Zoysia japonica Species 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、防音パネルに関
し、特に、変圧器等から出る低音域から比較的高音域に
到る騒音を遮音する防音パネルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproofing panel, and more particularly to a soundproofing panel for insulating noise from a low frequency range to a relatively high frequency range from a transformer or the like.
【０００２】[0002]
【従来の技術】近年、交通道路、鉄道線路、ライフライ
ンの工事、さらに自動車、電車、航空機からの騒音や、
日常生活において隣家、階上からの生活騒音、深夜営業
の店舗からの騒音等が、騒音苦情として問題になってい
る。また、工場や変電所等の施設からの騒音も問題にな
っている。これらの騒音に対する騒音低減対策として
は、発生源に対する対策と防音による対策が行われてい
る。2. Description of the Related Art In recent years, construction of traffic roads, railway tracks and lifelines, as well as noise from automobiles, trains and aircraft,
In daily life, noise from neighbors, upstairs, and noise from stores operating late at night have become problems as noise complaints. Also, noise from facilities such as factories and substations has become a problem. As noise reduction measures against these noises, measures against the generation source and measures against sound are taken.
【０００３】発生源に対する対策は、騒音の発生機構そ
のものを改善することで行われている。例えば、工場や
変電所などに設置されている機械、変圧器、リアクトル
からの騒音の場合は、その機械、変圧器、リアクトルの
機構そのものを改善することによって、騒音を低減して
いる。[0003] Countermeasures against the generation source are taken by improving the noise generation mechanism itself. For example, in the case of noise from machines, transformers, and reactors installed in factories and substations, noise is reduced by improving the mechanisms of the machines, transformers, and reactors themselves.
【０００４】防音による対策としては、ボード、コンク
リート、ガラス等を用いる遮音による方法と、グラスウ
ール、ロックウール、パーティクルボード、プラスター
ボード等を用いる吸音による方法がある。遮音による方
法では、上記のボード等の遮音材によって音の伝搬を遮
断することで騒音を低減する。吸音による方法では、上
記のグラスウール等の吸音材によって音のエネルギを熱
のエネルギに変換し吸収することで騒音を低減する。[0004] As a countermeasure by soundproofing, there are a soundproofing method using boards, concrete, glass and the like, and a sound absorbing method using glass wool, rock wool, particle board, plaster board and the like. In the sound insulation method, noise is reduced by intercepting sound propagation by the sound insulation material such as the board. In the sound absorbing method, noise is reduced by converting sound energy into heat energy by the sound absorbing material such as the glass wool and absorbing the heat energy.
【０００５】騒音を低減するための遮音材は、重量の増
加に伴い騒音の低減を大きくすることができる。このた
め、騒音の低減を大きくするためには、遮音材の重量を
大きくしなければならない。騒音の低減のため、遮音材
の重量を大きくすると、それに伴い容積も大きくなり、
建造物の構造材や内装材に用いるのは難しくなる。ま
た、重量も大きいため扱いにくい。このような従来の騒
音を低減するための遮音材では、建造物の構造材や内装
材に対しての重量や容積等の制約から防音性能に限界が
でてくる。以上のことは吸音材についても同様に言える
ことである。[0005] A sound insulating material for reducing noise can greatly reduce noise as the weight increases. Therefore, in order to increase the noise reduction, the weight of the sound insulating material must be increased. If the weight of the sound insulation material is increased to reduce noise, the volume will increase accordingly,
It will be difficult to use it for structural and interior materials of buildings. In addition, it is difficult to handle because of its large weight. In such a conventional sound insulating material for reducing noise, there is a limit to the soundproofing performance due to restrictions on the weight and volume of structural and interior materials of a building. The same can be said for the sound absorbing material.
【０００６】上記した発生源に対する対策と防音に対す
る対策とは別に、他の騒音低減対策として、音波の干渉
を利用するアクティブ・ノイズ・コントロール（以下、
ANCという）と呼ばれる方法がある。このANCによる方法
では、音センサで騒音を捕らえ、捕らえた騒音と逆位相
の音波をスピーカから発生させ、騒音とスピーカからの
音波との干渉によって騒音を打ち消す。しかし、このAN
Cによる騒音低減対策では、適用可能な音域が、波長が
長く平面波になりやすい低音のみでしか使用できない。
また、ANCによる騒音低減方法では、騒音を瞬時に分析
する高価な制御装置と騒音を打ち消す音波を発生するス
ピーカが必要となり、ANCの設備の構築に多大な費用が
かかる。[0006] Apart from the above countermeasures against the generation source and the countermeasures against soundproofing, another noise reduction countermeasure is an active noise control (hereinafter, referred to as "active noise control") utilizing interference of sound waves.
ANC). In the ANC method, noise is captured by a sound sensor, a sound wave having a phase opposite to the captured noise is generated from a speaker, and the noise is canceled by interference between the noise and the sound wave from the speaker. But this AN
In the noise reduction measures by C, the applicable sound range can be used only for low tones that have long wavelengths and tend to become plane waves.
In addition, the noise reduction method using ANC requires an expensive control device that analyzes noise instantaneously and a speaker that generates a sound wave that cancels the noise, and construction of ANC equipment requires a large cost.
【０００７】上記の問題を解決する遮音装置が、特公平
７−１９１５４号公報において提案されている。以下、
図９〜図１２を参照して上記公報で開示された遮音装置
の説明をする。図９は薄膜５１の表面に錘５２をほぼ一
定間隔aをもって規則的に固定した遮音装置を示す図で
ある。枠部材５３に張られた剛性を備えた薄膜５１に、
錘５２がほぼ一定間隔aをもって固定されている。この
ため、この遮音装置に入射する騒音によって薄膜５１全
体の振動と、規則的に固定された錘５２によって分割さ
れる部分の振動が生じる。この薄膜５１全体の振動と分
割された部分の振動は独自に振動し、これらの振動が打
ち消し合って薄膜５１全体の振動を減衰させる。従っ
て、薄膜５１全体の振動が減衰するため、騒音の低減が
なされる。A sound insulation device that solves the above problem is proposed in Japanese Patent Publication No. 7-19154. Less than,
The sound insulation device disclosed in the above publication will be described with reference to FIGS. FIG. 9 is a diagram showing a sound insulating device in which weights 52 are regularly fixed on the surface of the thin film 51 at substantially constant intervals a. The thin film 51 having rigidity stretched on the frame member 53,
The weight 52 is fixed with a substantially constant interval a. For this reason, the noise incident on the sound insulating device causes vibration of the entire thin film 51 and vibration of a portion divided by the weight 52 fixed regularly. The vibration of the entire thin film 51 and the vibration of the divided portions vibrate independently, and these vibrations cancel each other to attenuate the vibration of the entire thin film 51. Therefore, since the vibration of the entire thin film 51 is attenuated, noise is reduced.
【０００８】図１０は、薄膜５１の表面を格子状の枠５
４で分割した遮音装置を示す図である。枠部材５３に張
られた剛性を備えた薄膜５１が格子状の枠５４で分割さ
れている。このため、図９の遮音装置と同様に入射する
騒音によって薄膜５１全体の振動と、格子状の枠５４に
よって分割される部分の振動が生じる。薄膜５１全体の
振動と格子状の枠５４によって分割された部分の振動は
独自に振動し、これらの振動が打ち消し合って薄膜５１
全体の振動が減衰する。これらの遮音装置は、構造が簡
単であり、薄膜を用いているため軽量である。また、重
量の増加を伴わず遮音量を増大させることができるた
め、重量や容積の制約を緩和できる。FIG. 10 shows that the surface of the thin film 51 is
It is a figure showing the sound insulation device divided by 4. A rigid thin film 51 stretched over a frame member 53 is divided by a lattice-like frame 54. For this reason, as in the sound insulation device of FIG. 9, the incident noise causes vibration of the entire thin film 51 and vibration of a portion divided by the lattice frame 54. The vibration of the entire thin film 51 and the vibration of the portion divided by the lattice-shaped frame 54 vibrate independently, and these vibrations cancel each other, and
The whole vibration is damped. These sound insulation devices have a simple structure and are lightweight because they use a thin film. Further, since the sound insulation volume can be increased without increasing the weight, restrictions on weight and volume can be reduced.
【０００９】しかし、この遮音装置では、錘５２が固定
される間隔または錘５２の重さおよび格子状の枠５４の
桟のピッチ等により、遮音できる騒音の音域が決まって
しまう。また、この薄膜５１による遮音では、薄膜５１
の厚さを厚くしていったとき、騒音の入射によって起こ
る薄膜全体の振動を分割できず、うまく振動を打ち消す
ことができなくなっていくため、構造上低音の遮音しか
できない。このため、低音の騒音を狙って遮音した場
合、高音の騒音は遮音できずに透過してしまう。However, in this sound insulation device, the sound range of noise that can be sound-insulated is determined by the interval at which the weight 52 is fixed, the weight of the weight 52, the pitch of the bars of the lattice-shaped frame 54, and the like. In the sound insulation by the thin film 51, the thin film 51
When the thickness of the thin film is increased, the vibration of the entire thin film caused by the incidence of noise cannot be divided, and the vibration cannot be effectively canceled out. For this reason, when sound is cut off aiming at low-pitched noise, high-pitched noise is transmitted without being able to be cut off.
【００１０】図１１に鋼板と薄膜５１に錘５２を設けた
遮音装置との比較実験の結果を示した。×印は鋼板によ
る結果であり、▲印は錘付き薄膜の結果である。縦軸は
遮音の程度を表す透過損失をｄＢで取り、横軸は対数で
１／３オクターブバンド中心周波数をＨｚで取ってい
る。この実験で用いた錘付き薄膜は２４０Ｈｚの騒音の
遮音を狙って、厚さを０．２７ｍｍにしてある。従っ
て、薄膜の透過損失は２４０Ｈｚで最大の４８ｄＢとな
り、鋼板に比べて約２０ｄＢの差があり、透過損失が良
い。しかし、５５０Ｈｚにおける透過損失は１４ｄＢで
あり、鋼板と比べて約１５ｄＢ下回っており、透過損失
が悪い。これらの問題を解決するため、上記の公報では
錘付き薄膜を複数枚重ねて対応することを提案してい
る。FIG. 11 shows the results of a comparison experiment with a sound insulation device in which a weight 52 is provided on a steel plate and a thin film 51. The mark “x” indicates the result of the steel sheet, and the mark ▲ indicates the result of the thin film with a weight. The vertical axis represents the transmission loss representing the degree of sound insulation in dB, and the horizontal axis represents the logarithmic 1/3 octave band center frequency in Hz. The thickness of the thin film with a weight used in this experiment was set to 0.27 mm for sound insulation of 240 Hz noise. Therefore, the transmission loss of the thin film is 48 dB at 240 Hz, which is the maximum, and there is a difference of about 20 dB as compared with a steel plate, and the transmission loss is good. However, the transmission loss at 550 Hz is 14 dB, which is about 15 dB lower than that of the steel plate, and the transmission loss is poor. In order to solve these problems, the above-mentioned publication proposes that a plurality of thin films with a weight are stacked to cope with them.
【００１１】図１２に錘付き薄膜を間隔ｃを置いて２枚
設けた遮音装置を示す。表面に錘をほぼ一定間隔aをも
って規則的に固定した２枚の薄膜５１を、間隔保持部材
５５により中間に空気層５６を形成するように重ねてあ
る。この２枚の薄膜の厚さや錘の重さ等は、同じものを
用いている。このような二重構造の遮音装置を用いるこ
とにより、防音性能が上がる。FIG. 12 shows a sound insulating device in which two thin films with a weight are provided at intervals c. Two thin films 51 having weights fixed regularly on the surface thereof at a substantially constant interval a are overlapped by a spacing member 55 so as to form an air layer 56 in the middle. The same thickness and weight of the two thin films are used. By using such a double-layered sound insulation device, the sound insulation performance is improved.
【００１２】しかし、低周波音から高周波音にわたって
防音性能の良い遮音装置を作るためには、要求される防
音性能に対応して必要な枚数の錘付き薄膜を要する。つ
まり、薄膜の厚さや錘の重さを変えることで遮音できる
周波数が決まるため、広い音域にわたって遮音をするた
めには、複数枚の薄膜を必要とする。薄膜を何枚も用い
ると、遮音装置自体が厚くなってしまうため、建造物の
構造材や内装材に用いるのは難しい。また、薄膜のみを
用いているため、薄膜の構造上、高音域の騒音の遮音も
難しい。さらに、この遮音装置は構成として薄膜を用い
ているため、構造上弱い。また、薄膜は損傷により著し
く防音性能が低減するため、外装材として扱いにくく、
施工性が悪い。However, in order to produce a sound insulating device having good soundproofing performance from low-frequency sound to high-frequency sound, a necessary number of thin films with weights are required corresponding to the required soundproofing performance. That is, since the frequency at which sound can be isolated is determined by changing the thickness of the thin film and the weight of the weight, a plurality of thin films are required to perform sound insulation over a wide sound range. If a number of thin films are used, the sound insulation device itself becomes thicker, so that it is difficult to use it as a structural material or interior material of a building. Further, since only a thin film is used, it is difficult to isolate high-frequency noise due to the structure of the thin film. Furthermore, since this sound insulation device uses a thin film as a configuration, it is weak in structure. In addition, since the thin film has a markedly reduced soundproofing performance due to damage, it is difficult to handle as an exterior material,
Poor workability.
【００１３】[0013]
【発明が解決しようとする課題】従来の防音対策で用い
られている遮音材や吸音材は、防音性能を良くするため
には重量、容積を増やすことしかできず、建築材として
の制約から防音に限界があった。また、ANCは設備に多
大な費用がかかり、遮音できる音域が低音に限られてい
た。また、上記公報で開示されている遮音装置では、広
い音域にわたる騒音を遮音するためには、何枚もの薄膜
を用いなければならないという問題があった。また、薄
膜を用いているため、構造上低音の遮音に特徴があり、
構造上弱く、薄膜の損傷により著しく防音性能が減少す
る等の問題があった。The sound insulating material and the sound absorbing material used in the conventional soundproofing measures can only be increased in weight and volume in order to improve the soundproofing performance. Had limitations. In addition, ANC was very expensive to install, and the range of sound insulation was limited to low frequencies. Further, the sound insulation device disclosed in the above publication has a problem in that many thin films must be used in order to isolate noise over a wide sound range. In addition, because it uses a thin film, it is characterized by low sound insulation in its structure.
There is a problem that the structure is weak and the soundproofing performance is significantly reduced due to damage to the thin film.
【００１４】本発明の目的は、上記の問題に鑑み、軽量
でかつ簡単な構造で、低周波音から高周波音までの広い
音域の騒音を低減する、耐久性および汎用性のある防音
パネルを提供することにある。In view of the above problems, an object of the present invention is to provide a durable and versatile soundproof panel which has a lightweight and simple structure and reduces noise in a wide sound range from low frequency sounds to high frequency sounds. Is to do.
【００１５】[0015]
【課題を解決するための手段および作用】本発明に係る
防音パネルは、上記の目的を達成するために、次のよう
に構成される。The soundproofing panel according to the present invention is configured as follows to achieve the above object.
【００１６】 本発明に係る第１の防音パネル（請求項
１に対応）は、振動する面が分割される構造を有し、音
波によって引き起こされる全体振動と、分割によって生
じる部分振動が相互に打ち消し合って全体振動を減衰さ
せ、低周波の騒音の伝搬を低減する薄膜と、薄膜に対向
させて一定間隔で配置され、相対的に高周波の騒音の伝
搬を低減する鋼板とから構成される。上記の構成におい
て、薄膜と鋼板を組合せ両者を対向させて配置したこと
により、薄膜が遮音できない高周波音の騒音も遮音する
ことができる。これにより、本発明に係る第１の防音パ
ネルは、低周波音から高周波音までの広い音域の騒音を
防音できる。A first soundproofing panel according to the present invention (corresponding to claim 1) has a structure in which a vibrating surface is divided, and the whole vibration caused by a sound wave and the partial vibration caused by the division cancel each other. It is composed of a thin film that attenuates the entire vibration and reduces the transmission of low-frequency noise, and a steel plate that is arranged at a predetermined interval facing the thin film and that reduces the transmission of relatively high-frequency noise. In the above configuration, by combining the thin film and the steel plate and disposing them so as to face each other, high-frequency noise that cannot be sound-insulated by the thin film can also be isolated. Thereby, the first soundproof panel according to the present invention can prevent noise in a wide range from low-frequency sound to high-frequency sound.
【００１７】本発明に係る第２の防音パネル（請求項２
に対応）は、上記の構成において、好ましくは、薄膜と
鋼板の間に吸音材を挿入することを特徴とする。薄膜と
鋼板の間に吸音材を入れることによって、薄膜と鋼板の
間で多重反射して残存する共鳴周波数の騒音が吸収さ
れ、さらに防音性能が良くなる。A second soundproof panel according to the present invention (claim 2)
In the above configuration, preferably, a sound absorbing material is inserted between the thin film and the steel plate. By inserting a sound absorbing material between the thin film and the steel plate, the noise of the resonance frequency remaining due to multiple reflection between the thin film and the steel plate is absorbed, and the soundproof performance is further improved.
【００１８】本発明に係る第３の防音パネル（請求項３
に対応）は、上記の構成において、好ましくは、薄膜の
外側にこの薄膜を被う他の吸音材と鋼板を設けて構成さ
れることを特徴とする。上記の構成によれば、入射して
内部の薄膜や鋼板に反射された騒音を内部に閉じこめる
ことができる。また、防音パネルの内部で騒音の反射が
行われるたびに、内部に挿入された吸音材によって騒音
が吸収される。また、パネル化した際、外部の衝撃から
薄膜を保護し耐久性が良くなるため、施工性が向上す
る。A third soundproof panel according to the present invention (claim 3)
) Is characterized in that, in the above configuration, a steel sheet and another sound absorbing material covering the thin film are preferably provided outside the thin film. According to the above configuration, noise that is incident and reflected on the thin film or steel plate inside can be confined inside. Further, each time noise is reflected inside the soundproof panel, the noise is absorbed by the sound absorbing material inserted inside. Further, when the panel is formed, the thin film is protected from external impact and durability is improved, so that workability is improved.
【００１９】[0019]
【発明の実施の形態】以下に、本発明の好適な実施形態
を添付図面に基づいて説明する。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
【００２０】図１と図２を参照して本発明に係る防音パ
ネルの第１の実施形態を説明する。図１は防音パネルの
外観を示し、図２は縦断面を示す。本実施形態に係る防
音パネルは、ボタン状の錘１２がほぼ一定間隔を置いて
規則的に固定されている剛性を有した薄膜１１と、この
薄膜１１と一定間隔を置いて対向して配置される鋼板１
３と、この鋼板１３と薄膜１１の間隔を一定に保持する
間隔保持部材１５と、鋼板１３と薄膜１１の間の空間に
挿入されたグラスウール１４とから二重構造壁として構
成される。ここで、薄膜１１は、錘１２がほぼ一定間隔
で設けられているという構成だけでなく、騒音によって
引き起こされる振動を薄膜１１全体の振動と部分の振動
に分割するような構成であればよい。例えば、薄膜に枠
を設けて、薄膜全体の振動を分割するような構成にして
もよい。以下、錘１２が規則的に一定間隔を置いて固定
されている錘付きの薄膜を例として採用し説明する。グ
ラスウール１４はそれ自体パネル状の形態を有する。グ
ラスウール１４は通気性を有する多孔質吸音材であり、
その材質に応じた周波数帯域の音を吸収する吸音材とし
ての機能を有している。グラスウール１４は吸音材の一
例であって、これに限定されるものではない。また、間
隔保持部材１５の幅Ｌ１は、例えば約１００ｍｍであ
る。従って、本実施形態に係る防音パネルは約１００ｍ
ｍの厚みを有している。A first embodiment of a soundproof panel according to the present invention will be described with reference to FIGS. FIG. 1 shows the appearance of the soundproof panel, and FIG. 2 shows a longitudinal section. The soundproof panel according to the present embodiment has a rigid thin film 11 in which button-shaped weights 12 are regularly fixed at substantially constant intervals, and is arranged opposite to the thin film 11 at regular intervals. Steel plate 1
3, a spacing member 15 for keeping the gap between the steel plate 13 and the thin film 11 constant, and a glass wool 14 inserted into the space between the steel plate 13 and the thin film 11 to form a double structure wall. Here, the thin film 11 may have not only a configuration in which the weights 12 are provided at substantially constant intervals but also a configuration in which vibration caused by noise is divided into vibration of the entire thin film 11 and vibration of a portion. For example, a frame may be provided on the thin film to divide the vibration of the entire thin film. Hereinafter, a weighted thin film in which the weights 12 are regularly fixed at regular intervals will be described as an example. The glass wool 14 itself has a panel-like shape. Glass wool 14 is a porous sound-absorbing material having air permeability,
It has a function as a sound absorbing material that absorbs sound in a frequency band corresponding to the material. The glass wool 14 is an example of a sound absorbing material, and is not limited to this. The width L1 of the spacing member 15 is, for example, about 100 mm. Therefore, the soundproof panel according to the present embodiment is about 100 m.
m.
【００２１】本実施形態の防音パネルの薄膜１１側に騒
音が入射すると、薄膜全体は騒音の低音部分によって振
動する。同時に錘１２によって、薄膜全体の振動とは別
に部分的な振動が錘１２の配置箇所に起きる。この部分
的な振動と薄膜全体の振動が相互作用で打ち消し合い、
薄膜全体の振動が減衰する。この薄膜全体の振動の減衰
によって、騒音の低周波音部分（例えば１２５〜４００
Ｈｚ）が遮音される。錘付き薄膜１１によって遮音でき
なかった騒音の一部は、グラスウール１４によって吸収
される。さらに残る中周波音および高周波音の騒音（例
えば４００〜４０００Ｈｚ）は、鋼板１３によって反射
して遮音される。この鋼板１３によって反射された騒音
の一部は、薄膜１１によっても反射され、薄膜１１と鋼
板１３の間で共鳴を起こす。この共鳴する騒音の周波数
を共鳴周波数という。本実施形態の防音パネルでは、鋼
板１３と錘付き薄膜１１の遮音に対する機構が異なって
おり、遮音する周波数も異なるため、従来の同じ材料を
用いた二重構造壁の防音パネルに比べ共鳴しにくい構造
となっている。しかし、鋼板１３と錘付き薄膜１１の間
には共鳴しにくいが、共鳴してしまう周波数の音が生じ
る。この共鳴周波数の騒音に関しては、間に挿入されて
いるグラスウール１４によって吸音し、防音性能を高め
ている。When noise is incident on the thin film 11 side of the soundproof panel of the present embodiment, the entire thin film vibrates due to the low sound portion of the noise. At the same time, the weight 12 causes a partial vibration at the position where the weight 12 is disposed, separately from the vibration of the entire thin film. This partial vibration and the vibration of the entire thin film cancel each other out due to the interaction,
The vibration of the entire thin film is attenuated. Due to the attenuation of the vibration of the entire thin film, a low-frequency sound portion of the noise (for example, 125 to 400)
Hz). Part of the noise that could not be isolated by the weighted thin film 11 is absorbed by the glass wool 14. Furthermore, the remaining medium-frequency sound and high-frequency sound noise (e.g., 400 to 4000 Hz) are reflected by the steel plate 13 and blocked. Part of the noise reflected by the steel plate 13 is also reflected by the thin film 11, causing resonance between the thin film 11 and the steel plate 13. The frequency of the resonating noise is called a resonance frequency. In the soundproof panel of the present embodiment, the mechanism for sound insulation of the steel plate 13 and the weighted thin film 11 is different, and the frequency of sound insulation is also different, so that the soundproof panel has less resonance than the conventional soundproof panel of the double structure wall using the same material. It has a structure. However, resonance between the steel plate 13 and the weighted thin film 11 is difficult, but a sound having a frequency that causes resonance is generated. With respect to the noise at the resonance frequency, the sound is absorbed by the glass wool 14 inserted therebetween, and the soundproof performance is enhanced.
【００２２】図３に第１の実施形態の防音パネルと従来
の錘付き薄膜のみの遮音パネルとの透過損失を比較した
実験結果を示している。縦軸は遮音の程度を表す透過損
失をｄＢで取り、横軸は対数で１／３オクターブバンド
中心周波数をＨｚで取っている。□印は本実施形態に係
る防音パネルよる結果であり、▲印は従来の錘付き薄膜
のみの遮音装置による結果である。従来の錘付き薄膜の
みの遮音装置がピークを迎える２４０Ｈｚより高い音で
は、本実施形態の防音パネルがよく防音しているのがわ
かった。実験を行った１０００Ｈｚから４０００Ｈｚの
間では約２０ｄＢの透過損失の差があり、両装置の最も
差がついた５５０Ｈｚでは約３０ｄＢもの透過損失の差
があった。この実験より、本実施形態の防音パネルは従
来の錘付き薄膜に比べて相対的に中周波および高周波の
音域で高い防音性能を持ち、低周波音から高周波音まで
の広い音域で防音を実現していることがわかる。FIG. 3 shows an experimental result comparing the transmission loss between the soundproof panel of the first embodiment and the conventional soundproof panel with only a thin film with a weight. The vertical axis represents the transmission loss representing the degree of sound insulation in dB, and the horizontal axis represents the logarithmic 1/3 octave band center frequency in Hz. The marks □ are the results obtained by the soundproof panel according to the present embodiment, and the marks ▲ are the results obtained by the conventional sound insulation device using only a thin film with a weight. It was found that the soundproof panel of the present embodiment is well soundproofed at a sound higher than 240 Hz at which the conventional sound insulating device having only a thin film with a weight reaches its peak. There was a transmission loss difference of about 20 dB between 1000 Hz and 4000 Hz in the experiment, and a transmission loss difference of about 30 dB at 550 Hz where the two devices had the largest difference. From this experiment, the soundproofing panel of this embodiment has higher soundproofing performance in the middle and high frequency ranges relatively than the conventional thin film with weight, and achieves soundproofing in a wide range from low frequency sounds to high frequency sounds. You can see that it is.
【００２３】次に図４を参照して本発明の第２の実施形
態を説明する。第２の実施形態に係る防音パネルは、第
１の実施形態の防音パネルの薄膜１１の外側に、さらに
グラスウール１４Ｒと鋼板１３Ｒを設け薄膜１１を被う
ようにした構成から成っている。図４において、図２で
示した要素と実質的に同一の要素には同一の符号を付し
ている。つまり、２枚の鋼板１３，１３Ｒの間に錘付き
薄膜１１を設け、さらにこの錘付き薄膜１１と両側の２
枚の各々の鋼板１３，１３Ｒとの間にグラスウール１
４，１４Ｒを挿入した構成から成っている。ここで間隔
保持部材１５Aの幅Ｌ２は、例えば約１５０ｍｍであ
り、高さＬ３は、例えば約５００ｍｍである。従って、
本実施形態に係る防音パネルは約１５０ｍｍの厚みと約
５００ｍｍの高さを有している。上記の構成によれば、
鋼板１３Ｒ側から入射した騒音は錘付き薄膜１１と鋼板
１３の薄膜側とで反射されるが、その反射した騒音は鋼
板１３Ｒの薄膜１１側で反射され、２枚の鋼板１３，１
３Ｒの間に閉じこめられることになる。閉じこめられた
騒音は、グラスウール１４，１４Ｒで吸収され、反射さ
れるたびに低減していく。図５は、本実施形態の防音パ
ネルとコンクリート（１２０ｍｍの厚み）との防音性能
を比較した実験結果である。◆印は本実施形態の防音パ
ネルによる結果であり、●印はコンクリート（１２０ｍ
ｍ）による結果である。本実施形態の防音パネルとコン
クリート１２０ｍｍの防音性能は、ほぼ同じであること
がわかる。以上の第２実施形態の防音パネルは、防音壁
や防音囲いとして使い易く取り扱い易いものとして作ら
れており、施工性が高いものとなる。Next, a second embodiment of the present invention will be described with reference to FIG. The soundproof panel according to the second embodiment has a configuration in which a glass wool 14R and a steel plate 13R are further provided outside the thin film 11 of the soundproof panel of the first embodiment to cover the thin film 11. 4, elements substantially the same as the elements shown in FIG. 2 are denoted by the same reference numerals. That is, the thin film with weight 11 is provided between the two steel plates 13 and 13R, and the thin film with weight 11 and
Glass wool 1 between each of the steel plates 13, 13R
4, 14R is inserted. Here, the width L2 of the spacing member 15A is, for example, about 150 mm, and the height L3 is, for example, about 500 mm. Therefore,
The soundproof panel according to the present embodiment has a thickness of about 150 mm and a height of about 500 mm. According to the above configuration,
The noise incident from the steel plate 13R side is reflected by the thin film 11 with the weight and the thin film side of the steel plate 13, but the reflected noise is reflected by the thin film 11 side of the steel plate 13R, and the two steel plates 13, 1
You will be trapped during 3R. The trapped noise is absorbed by the glass wools 14 and 14R, and is reduced each time it is reflected. FIG. 5 is an experimental result comparing the soundproofing performance of the soundproofing panel of the present embodiment with concrete (120 mm thick). The mark “◆” indicates the result of the soundproof panel of this embodiment, and the mark “●” indicates the concrete (120 m
m). It can be seen that the soundproofing performance of the soundproofing panel of this embodiment and the 120 mm of concrete are almost the same. The soundproof panel of the second embodiment described above is made as a soundproof wall or soundproof enclosure that is easy to use and handle, and has high workability.
【００２４】以下に、図６〜８を参照にして、本発明に
係る第２の実施形態の防音パネルを利用した実規模モデ
ルの試験を説明する。試験は変電所における変圧器、リ
アクトルの騒音の低減を目的として行われた。変電所で
は防音対策として発生源対策と遮音対策が行われてい
る。発生源対策としては、変圧器、リアクトルに対し、
磁歪による騒音の低減のため珪素鋼板を開発し、また鉄
芯構造の改良を行い、効果を上げている。遮音対策とし
ては、質量を重くすればするほど遮音のできるコンクリ
ートや鉄板が用いられていた。そこで、軽量で簡単な構
造であり、高音域まで十分な遮音性を有する実用的な第
２の実施形態の防音パネルを用いて試験を行った。A test of a full-scale model using the soundproof panel of the second embodiment according to the present invention will be described below with reference to FIGS. The test was conducted to reduce transformer and reactor noise at substations. At substations, countermeasures are taken against sound sources and noise insulation. As a countermeasure for the generation source, transformers and reactors
To reduce noise due to magnetostriction, a silicon steel plate has been developed, and the structure of the iron core has been improved to improve the effect. As a sound insulation measure, concrete and iron plates that can be sound-insulated as the mass increases are used. Therefore, a test was performed using the practical soundproof panel of the second embodiment, which is lightweight and has a simple structure and has sufficient sound insulation up to a high sound range.
【００２５】錘付き薄膜として１２０Ｈｚの周波数の騒
音を狙った薄膜１１を用い、この薄膜１１の両側に一定
間隔を置いて鋼板１３を設け、薄膜１１と鋼板１３の間
にはグラスウール１４を入れた。試験において、プレハ
ブ化を目指して幅１９６０ｍｍ×高さ５００ｍｍ×厚さ
１５０ｍｍのユニットパネル２０を用いた。このような
パネル２０にすることによって、溶接の必要をなくし、
支柱２２にはめ込むだけで設置することができるように
した。このパネル２０を用いて、４０MVAの分路リアク
トル２３から出る騒音の防音試験を行った。分路リアク
トル２３の側面をこのパネル２０で囲み、天井部２１は
従来の鉄板とした。従来の鉄板としたのは、分路リアク
トル２３の天井部２１は貫通部が多いためである。従来
の構造の防音壁と比較するため、厚み１２ｍｍの鉄板と
１００ｍｍの吸音材を合わせた防音壁を用いた。パネル
２０の面密度は５９．４ｋｇ／ｍ２であり、従来の構造
の防音壁の面密度は１１８ｋｇ／ｍ２である。A thin film 11 aimed at noise at a frequency of 120 Hz was used as a thin film with a weight, and steel plates 13 were provided at regular intervals on both sides of the thin film 11, and glass wool 14 was inserted between the thin films 11 and 13. . In the test, a unit panel 20 having a width of 1960 mm × a height of 500 mm × a thickness of 150 mm was used for prefabrication. Such a panel 20 eliminates the need for welding,
It can be installed simply by fitting it into the column 22. Using this panel 20, a soundproofing test of noise emitted from the shunt reactor 23 of 40 MVA was performed. The side surface of the shunt reactor 23 was surrounded by the panel 20, and the ceiling 21 was a conventional iron plate. The conventional iron plate is used because the ceiling portion 21 of the shunt reactor 23 has many penetrating portions. For comparison with a conventional sound-insulating wall, a sound-insulating wall composed of a 12 mm-thick iron plate and a 100 mm sound absorbing material was used. The areal density of the panel 20 is 59.4 kg / m 2 , and the areal density of the conventional soundproof wall is 118 kg / m 2 .
【００２６】図６は本試験で用いた分路リアクトル２３
と防音壁を上からみた平面図である。図７は本試験で用
いた分路リアクトル２３と防音壁を横からみた側面図で
ある。分路リアクトル２３を囲む防音壁の寸法は幅４８
５５ｍｍ、高さ２９７０ｍｍ、奥行き３８０５ｍｍであ
る。第２の実施形態の防音パネルは、この防音壁の支柱
にはめ込むことによって簡単に設置される。FIG. 6 shows the shunt reactor 23 used in this test.
FIG. 2 is a plan view of the soundproof wall viewed from above. FIG. 7 is a side view of the shunt reactor 23 and the soundproof wall used in this test as viewed from the side. The size of the soundproof wall surrounding the shunt reactor 23 is width 48
55 mm, height 2970 mm, depth 3805 mm. The soundproof panel of the second embodiment is easily installed by fitting it into a support of the soundproof wall.
【００２７】図８は、上記試験の結果を表した表であ
る。単体騒音とは、分路リアクトル２３そのものから出
る騒音のことである。完成騒音とは、防音壁を介して、
分路リアクトル２３から出る騒音を測った騒音量であ
る。減音量とは、単体騒音から完成騒音を引いた量であ
り、どれだけ防音できたかを示している。分路リアクト
ル２３そのものの騒音である単体騒音は、６６．４ｄＢ
であった。実験結果を見ると、パネル２０による完成騒
音は４５．５ｄＢであり、減音量は２０．９ｄＢとな
り、従来の構造の防音壁による完成騒音は４５．７ｄＢ
であり、減音量は２０．７ｄＢとなった。減音量はほぼ
同じであるが、面密度はパネル２０の方が従来の構造の
防音壁に比べて半分である。つまり、本発明に係る防音
パネルは軽い上、防音性能が優れている。FIG. 8 is a table showing the results of the above test. The single noise refers to noise emitted from the shunt reactor 23 itself. With completed noise, through the soundproof wall,
This is a noise amount obtained by measuring noise emitted from the shunt reactor 23. The sound reduction is the amount obtained by subtracting the completed noise from the single noise, and indicates how much soundproofing was achieved. The unit noise of the shunt reactor 23 itself is 66.4 dB.
Met. According to the experimental results, the completed noise by the panel 20 is 45.5 dB, the sound reduction is 20.9 dB, and the completed noise by the conventional soundproof wall is 45.7 dB.
, And the volume reduction was 20.7 dB. Although the sound volume reduction is almost the same, the surface density of the panel 20 is half that of the conventional soundproof wall. That is, the soundproof panel according to the present invention is light and has excellent soundproof performance.
【００２８】以上の本発明の実施形態の説明において、
前述のごとく吸音材はグラスウールに限らず、ロックウ
ール等の多孔質型吸音材やパーティクルボード、プラス
ターボード等の板振動型吸音材や合板、石綿板等の共鳴
器型吸音材でもよい。また、鋼板に挟まれて内蔵される
錘付き薄膜と吸音材は１枚に限らず、複数枚でもよい。In the above description of the embodiment of the present invention,
As described above, the sound absorbing material is not limited to glass wool, but may be a porous sound absorbing material such as rock wool, a plate vibration type sound absorbing material such as particle board or plaster board, or a resonator type sound absorbing material such as plywood or asbestos board. Further, the number of the thin film with the weight and the sound absorbing material which are built in between the steel plates is not limited to one, but may be plural.
【００２９】[0029]
【発明の効果】以上の説明で明らかなように本発明によ
れば、鋼板と錘付き薄膜を用いることで、低周波音から
高周波音までの広い音域に対して防音することができ
る。また、鋼板と錘付き薄膜は遮音の機構が違うため、
共鳴しやすい周波数を少なくすることができ、さらに鋼
板と錘付き薄膜の間に吸音材を挿入することで、防音性
能を高めることができる。また、同程度の防音性能を持
つ防音壁に比べ軽量であり、構成が簡単であることか
ら、施工性の向上、工期の短縮が期待できる。As is apparent from the above description, according to the present invention, the use of a steel plate and a thin film with a weight makes it possible to provide sound insulation over a wide range from low-frequency sounds to high-frequency sounds. In addition, since the sound insulation mechanism is different between a steel plate and a thin film with a weight,
The frequency at which resonance is likely to occur can be reduced, and the soundproofing performance can be improved by inserting a sound absorbing material between the steel plate and the weighted thin film. In addition, since it is lighter than a soundproof wall having the same level of soundproof performance and has a simple configuration, improvement in workability and shortening of construction period can be expected.
【図１】本発明の第１の実施形態の外観を示す図であ
る。FIG. 1 is a diagram showing an appearance of a first embodiment of the present invention.
【図２】本発明の第１の実施形態の構成を示す縦断面図
である。FIG. 2 is a longitudinal sectional view showing the configuration of the first embodiment of the present invention.
【図３】本発明の第１の実施形態と従来の錘付き薄膜と
の透過損失を比較実験した実験結果を示す図である。FIG. 3 is a diagram showing an experimental result of a comparative experiment of transmission loss between the first embodiment of the present invention and a conventional thin film with a weight.
【図４】本発明の第２の実施形態の構成を示す断面図で
ある。FIG. 4 is a sectional view showing a configuration of a second exemplary embodiment of the present invention.
【図５】本発明の第２の実施形態と従来のコンクリート
の防音壁との透過損失を比較実験した実験結果を示す図
である。FIG. 5 is a view showing an experimental result of a comparative experiment on a transmission loss between the second embodiment of the present invention and a conventional soundproof wall of concrete.
【図６】実規模モデルの試験に用いた防音壁を上から見
た平面図である。FIG. 6 is a plan view of the soundproof wall used for the test of the full-scale model as viewed from above.
【図７】実規模モデルの試験に用いた防音壁を横から見
た側面図である。FIG. 7 is a side view of the soundproof wall used for the test of the full-scale model as viewed from the side.
【図８】実規模モデルの試験結果を表す表である。FIG. 8 is a table showing test results of a full-scale model.
【図９】従来の錘付き薄膜の構成を示す図である。FIG. 9 is a view showing a configuration of a conventional thin film with a weight.
【図１０】従来の格子状の枠を固定された薄膜の構成を
示す図である。FIG. 10 is a diagram showing a configuration of a conventional thin film to which a grid-like frame is fixed.
【図１１】鋼板と従来の錘付き薄膜との透過損失を比較
実験した実験結果を示す図である。FIG. 11 is a view showing an experimental result of a comparative experiment of transmission loss between a steel plate and a conventional thin film with a weight.
【図１２】従来の錘付き薄膜を二重に重ねた遮音装置を
示す図である。FIG. 12 is a diagram showing a conventional sound insulation device in which a thin film with a weight is doubled.
１１ 薄膜 １２ 錘 １３ 鋼板 １４ グラスウール ２０ パネル ２２ 支柱 ２３ 分路リアクトル DESCRIPTION OF SYMBOLS 11 Thin film 12 Weight 13 Steel plate 14 Glass wool 20 Panel 22 Prop 23 Shunt reactor
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｅ０４Ｂ 1/86 (72)発明者 川瀬 康彰 東京都港区芝一丁目11番11号 日本板硝子 環境アメニティ株式会社内 Ｆターム(参考） 2D001 AA01 CB01 CD03 2E001 DF04 DF07 FA03 FA14 GA17 GA42 GA46 HA02 HA03 HA32 HA33 HB02 HC02 HC04 5D061 AA12 AA16 BB01 BB37 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme Court ゛ (Reference) E04B 1/86 (72) Inventor Yasuaki Kawase 1-1-11 Shiba, Minato-ku, Tokyo Nippon Sheet Glass Environmental Amenities Stock Company F term (reference) 2D001 AA01 CB01 CD03 2E001 DF04 DF07 FA03 FA14 GA17 GA42 GA46 HA02 HA03 HA32 HA33 HB02 HC02 HC04 5D061 AA12 AA16 BB01 BB37
Claims (3)
波によって引き起こされる全体振動と、分割によって生
じる部分振動が相互に打ち消し合って前記全体振動を減
衰させ、低周波の騒音の伝搬を低減する薄膜と、 前記薄膜に対向させて一定間隔で配置され、相対的に高
周波の騒音の伝搬を低減する鋼板と、 から成ることを特徴とする防音パネル。The present invention has a structure in which a vibrating surface is divided, and a whole vibration caused by a sound wave and a partial vibration generated by the division cancel each other to attenuate the whole vibration, thereby reducing the propagation of low-frequency noise. A soundproof panel comprising: a thin film to be reduced; and a steel plate arranged at a predetermined interval facing the thin film to reduce propagation of relatively high-frequency noise.
したことを特徴とする請求項１記載の防音パネル。2. The soundproofing panel according to claim 1, wherein a sound absorbing material is inserted between the thin film and the steel plate.
音材と鋼板を設けたことを特徴とする請求項１または２
記載の防音パネル。3. A steel sheet and another sound absorbing material covering the thin film are provided outside the thin film.
The described soundproof panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000314397A JP2002123259A (en) | 2000-10-13 | 2000-10-13 | Acoustical panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000314397A JP2002123259A (en) | 2000-10-13 | 2000-10-13 | Acoustical panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002123259A true JP2002123259A (en) | 2002-04-26 |
Family
ID=18793663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000314397A Pending JP2002123259A (en) | 2000-10-13 | 2000-10-13 | Acoustical panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002123259A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1770216A1 (en) * | 2005-09-29 | 2007-04-04 | Rockwool International A/S | A noise absorbing element and a noise screen with such elements |
| GB2461909A (en) * | 2008-07-17 | 2010-01-20 | South Bank Univ Entpr Ltd | Sound absorbing device |
| CN105803965A (en) * | 2016-04-28 | 2016-07-27 | 中国铁道科学研究院 | Wideband sound absorption unit plate |
| CN106192785A (en) * | 2016-08-30 | 2016-12-07 | 国家电网公司 | A kind of full frequency band noise reduction barrier for transformer station and screening arrangement |
| JP2017187769A (en) * | 2016-04-05 | 2017-10-12 | 株式会社Ｓｋテック | Soundproof panel |
| JP2017227109A (en) * | 2016-06-21 | 2017-12-28 | 戸田建設株式会社 | Sound insulation structure body |
| JPWO2017030208A1 (en) * | 2015-08-20 | 2018-05-31 | 富士フイルム株式会社 | Soundproof structure, louver and soundproof wall |
| CN112227237A (en) * | 2020-11-10 | 2021-01-15 | 广州地铁设计研究院股份有限公司 | Sound barrier containing air resonant cavity |
| CN115924690A (en) * | 2022-12-09 | 2023-04-07 | 安徽菲茵特电梯有限公司 | Sound-proof elevator and sound-proof and noise reduction device |
| CN115985277A (en) * | 2022-10-13 | 2023-04-18 | 哈尔滨工程大学 | A film-type sound-absorbing porous superstructure containing a cavity and its preparation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6438796A (en) * | 1987-08-04 | 1989-02-09 | Hitachi Plant Eng & Constr Co | Sound absorbing type silencer |
| JPH06306974A (en) * | 1993-04-22 | 1994-11-01 | Takenaka Komuten Co Ltd | Sound-insulating wall |
| JPH0719154B2 (en) * | 1992-12-22 | 1995-03-06 | 株式会社鴻池組 | Sound insulation device consisting of thin film |
| JPH09158355A (en) * | 1995-12-08 | 1997-06-17 | Kawasaki Steel Corp | Sound absorbing panel and its mounting structure |
| JPH108845A (en) * | 1996-06-27 | 1998-01-13 | Matsushita Electric Works Ltd | Soundproof door |
| JPH11327563A (en) * | 1998-05-15 | 1999-11-26 | Sumitomo Metal Ind Ltd | Sound insulation material |
| JP2000250561A (en) * | 1999-02-26 | 2000-09-14 | Yunikkusu:Kk | Sound absorbing structure |
-
2000
- 2000-10-13 JP JP2000314397A patent/JP2002123259A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6438796A (en) * | 1987-08-04 | 1989-02-09 | Hitachi Plant Eng & Constr Co | Sound absorbing type silencer |
| JPH0719154B2 (en) * | 1992-12-22 | 1995-03-06 | 株式会社鴻池組 | Sound insulation device consisting of thin film |
| JPH06306974A (en) * | 1993-04-22 | 1994-11-01 | Takenaka Komuten Co Ltd | Sound-insulating wall |
| JPH09158355A (en) * | 1995-12-08 | 1997-06-17 | Kawasaki Steel Corp | Sound absorbing panel and its mounting structure |
| JPH108845A (en) * | 1996-06-27 | 1998-01-13 | Matsushita Electric Works Ltd | Soundproof door |
| JPH11327563A (en) * | 1998-05-15 | 1999-11-26 | Sumitomo Metal Ind Ltd | Sound insulation material |
| JP2000250561A (en) * | 1999-02-26 | 2000-09-14 | Yunikkusu:Kk | Sound absorbing structure |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007036231A1 (en) * | 2005-09-29 | 2007-04-05 | Rockwool International A/S | A noise absorbing element and a noise screen with such elements |
| EP1770216A1 (en) * | 2005-09-29 | 2007-04-04 | Rockwool International A/S | A noise absorbing element and a noise screen with such elements |
| GB2461909A (en) * | 2008-07-17 | 2010-01-20 | South Bank Univ Entpr Ltd | Sound absorbing device |
| JPWO2017030208A1 (en) * | 2015-08-20 | 2018-05-31 | 富士フイルム株式会社 | Soundproof structure, louver and soundproof wall |
| US10971129B2 (en) | 2015-08-20 | 2021-04-06 | Fujifilm Corporation | Soundproof structure, louver, and soundproof wall |
| JP2017187769A (en) * | 2016-04-05 | 2017-10-12 | 株式会社Ｓｋテック | Soundproof panel |
| WO2018179485A1 (en) * | 2016-04-05 | 2018-10-04 | 株式会社Ｓｋテック | Soundproof panel |
| CN105803965A (en) * | 2016-04-28 | 2016-07-27 | 中国铁道科学研究院 | Wideband sound absorption unit plate |
| CN105803965B (en) * | 2016-04-28 | 2018-04-10 | 中国铁道科学研究院 | A kind of broadband sound absorption cell board |
| JP2017227109A (en) * | 2016-06-21 | 2017-12-28 | 戸田建設株式会社 | Sound insulation structure body |
| CN106192785A (en) * | 2016-08-30 | 2016-12-07 | 国家电网公司 | A kind of full frequency band noise reduction barrier for transformer station and screening arrangement |
| CN112227237A (en) * | 2020-11-10 | 2021-01-15 | 广州地铁设计研究院股份有限公司 | Sound barrier containing air resonant cavity |
| CN112227237B (en) * | 2020-11-10 | 2022-04-29 | 广州地铁设计研究院股份有限公司 | Sound barrier containing air resonant cavity |
| CN115985277A (en) * | 2022-10-13 | 2023-04-18 | 哈尔滨工程大学 | A film-type sound-absorbing porous superstructure containing a cavity and its preparation method |
| CN115924690A (en) * | 2022-12-09 | 2023-04-07 | 安徽菲茵特电梯有限公司 | Sound-proof elevator and sound-proof and noise reduction device |
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