JP2018010127A - Muffling unit and muffling structure using muffling unit - Google Patents
Muffling unit and muffling structure using muffling unit Download PDFInfo
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Abstract
Description
本技術は、消音ユニットおよび消音ユニットを用いた消音構造体に関する。 The present technology relates to a silencing unit and a silencing structure using the silencing unit.
従来、換気ファンなどの送風設備や、換気の対象となる室内に設置された機械設備などから発生する騒音を低減するために、消音ユニットが用いられてきた。このような消音ユニットの一つに、スプリッタ型消音ユニットがある。スプリッタ型消音ユニットは、所望の減音量が得られるように、通過させる気体の流量にあわせて、吸音層の厚さ、風路の幅、消音ユニットの大きさを適宜調整することができる。たとえば、特許文献１は、通風路の内壁全体に吸音材を配置した中空状の中子を複数並べて配置したスプリッタ型消音ユニットを開示する。また、特許文献２は、吸音ダクトの通風路に設けたシート状の吸音板を開示する。 Conventionally, a silencing unit has been used in order to reduce noise generated from ventilation equipment such as a ventilation fan or mechanical equipment installed in a room to be ventilated. One such silencer unit is a splitter-type silencer unit. The splitter type silencing unit can appropriately adjust the thickness of the sound absorbing layer, the width of the air path, and the size of the silencing unit in accordance with the flow rate of the gas to be passed so that a desired sound reduction is obtained. For example, Patent Document 1 discloses a splitter type noise reduction unit in which a plurality of hollow cores each having a sound absorbing material disposed on the entire inner wall of a ventilation path are arranged side by side. Patent Document 2 discloses a sheet-like sound absorbing plate provided in a ventilation path of a sound absorbing duct.
しかしながら、特許文献１の技術では、通風路を構成する内壁全体に厚い吸音材が配置されるので、風路に直交する面に大きな障害物を配置することになり、通過する流体の風速が高くなる。このため、消音ユニットの圧力損失や気流発生音が増大し、消音ユニットの性能が低下するという問題があった。 However, in the technique of Patent Document 1, since the thick sound absorbing material is disposed on the entire inner wall constituting the ventilation path, a large obstacle is disposed on a surface orthogonal to the air path, and the wind speed of the fluid passing therethrough is high. Become. For this reason, there existed a problem that the pressure loss of a silencer unit and an airflow generation sound increased and the performance of the silencer unit fell.
一方、特許文献２の吸音材は薄く、圧力損失を増加させずにある程度の吸音効果を発揮することができるものの、吸音効果は低い。また特許文献２の吸音板はダクト内壁から離れた位置に配置されている。このため、ダクト内壁は露出され、通風路内に音波を吸音しない面があるので、場合によってはさらに消音ユニットを配置する必要がある。 On the other hand, the sound absorbing material of Patent Document 2 is thin and can exhibit a certain level of sound absorbing effect without increasing pressure loss, but the sound absorbing effect is low. The sound absorbing plate of Patent Document 2 is disposed at a position away from the duct inner wall. For this reason, since the inner wall of the duct is exposed and there is a surface that does not absorb sound waves in the ventilation path, a silencer unit needs to be further disposed in some cases.
本技術は、上記課題に鑑みてなされたものであって、消音ユニットの通風路を構成する２つの対向面の一部に薄い吸音板を設けて、吸音板を透過する音の一部を吸音すること、風路領域を確保して圧力損失を低減すること、のうち少なくとも１つを実現することを目的としている。 The present technology has been made in view of the above-described problem, and a thin sound absorbing plate is provided on a part of two opposing surfaces constituting the ventilation path of the silencer unit to absorb a part of the sound transmitted through the sound absorbing plate. It is intended to achieve at least one of the following, to ensure the air passage region and reduce the pressure loss.
上述した課題を解決するために、本発明の第１の形態によれば、消音ユニットであって、略直方体形状の第１消音部材と、前記第１消音部材から離間して配置される、略直方体形状の第２消音部材と、前記第１消音部材および前記第２消音部材を接続する吸音板と、を有し、前記第２消音部材の方を向く前記第１消音部材の内側面は、音響透過性を有する部材を有し、前記第１消音部材の方を向く前記第２消音部材の内側面は、音響透過性を有する部材を有する、消音ユニットを特徴とする。 In order to solve the above-described problem, according to the first aspect of the present invention, the silencing unit is a first silencing member having a substantially rectangular parallelepiped shape and disposed substantially apart from the first silencing member. A rectangular parallelepiped second silencing member, and a sound absorbing plate connecting the first silencing member and the second silencing member, and an inner surface of the first silencing member facing the second silencing member is: The sound-transmitting member has a sound-transmitting member, and an inner surface of the second sound-transmitting member facing the first sound-transmitting member has a sound-transmitting member.
また、本発明の第２の形態によれば、前記吸音板は第１吸音板および第２吸音板を有し、前記第１吸音板は、前記第１消音部材の上面と前記第２消音部材の上面とを接続し、前記第２吸音板は、前記第１消音部材の底面と前記第２消音部材の底面とを接続する、消音ユニットを特徴とする。 Moreover, according to the 2nd form of this invention, the said sound-absorbing board has a 1st sound-absorbing board and a 2nd sound-absorbing board, and the said 1st sound-absorbing board is the upper surface of the said 1st sound deadening member, and the said 2nd sound deadening member The second sound absorbing plate is characterized by a silencing unit that connects a bottom surface of the first silencing member and a bottom surface of the second silencing member.
また、本発明の第３の形態によれば、前記第１消音部材と第２消音部材との間には通路が画定されており、前記第１吸音板と、前記第２吸音板とを接続する、前記通路内に配置された第１内部吸音板と、前記第１消音部材の内側面と、前記第２消音部材の内側面とを接続する、前記通路内に配置された第２内部吸音板と、の少なくとも一方を有する、消音ユニットを特徴とする。 According to the third aspect of the present invention, a passage is defined between the first silencer member and the second silencer member, and the first sound absorber and the second sound absorber are connected. A second internal sound absorbing plate disposed in the passage connecting the first internal sound absorbing plate disposed in the passage, the inner side surface of the first silencing member, and the inner side surface of the second silencing member. And a muffler unit having at least one of a plate.
また、本発明の第４の形態によれば、複数の前記消音ユニットを複数連結して構成される、消音構造体を特徴とする。 Moreover, according to the 4th form of this invention, it is characterized by the muffling structure comprised by connecting the said several muffler unit.
また、本発明の第５の形態によれば、前記吸音板は第１吸音板を有し、前記第１吸音板は、前記第１消音部材の上面と前記第２消音部材の上面とを接続し、前記第１消音部材の上面は遮音性を有する部材を有し、底面は開口部を有し、前記第２消音部材の上面は遮音性を有する部材を有し、底面は開口部を有する、第１の形態に記載の消音ユニットを特徴とする。 According to the fifth aspect of the present invention, the sound absorbing plate has a first sound absorbing plate, and the first sound absorbing plate connects the upper surface of the first silencing member and the upper surface of the second silencing member. The upper surface of the first silencing member has a sound insulating member, the bottom surface has an opening, the upper surface of the second silencing member has a sound insulating member, and the bottom surface has an opening. The silencing unit described in the first embodiment is characterized.
また、本発明の第６の形態によれば、第５の形態に記載の前記消音ユニットを２つ備えた消音構造体であって、２つの消音ユニットは、第４消音ユニットと、第１消音ユニットであり、前記第４消音ユニットの第１消音部材の上面の遮音性部材の上に、前記第１消音ユニットの第１消音部材の底面の開口部が配置され、前記第４消音ユニットの第２消音部材の上面の遮音性部材の上に、前記第１消音ユニットの第２消音部材の底面の開口部が配置されている、消音構造体を特徴とする。 Moreover, according to the 6th form of this invention, it is a muffler structure provided with two said muffler units as described in a 5th form, and two mute units are a 4th mute unit and a 1st mute unit. An opening on the bottom surface of the first silencing member of the first silencing unit is disposed on the sound insulating member on the top surface of the first silencing member of the fourth silencing unit, 2 The noise reduction structure is characterized in that an opening on the bottom surface of the second noise reduction member of the first noise reduction unit is disposed on the sound insulation member on the upper surface of the noise reduction member.
また、本発明の第７の形態によれば、前記第１消音部材の外側面は、遮音性を有する部材を有し、前記第２消音部材の外側面は、開口部を有する、第５の形態に記載の消音ユニットを特徴とする。 According to the seventh aspect of the present invention, the outer surface of the first silencing member has a member having a sound insulating property, and the outer surface of the second silencing member has an opening. The mute unit according to the embodiment is characterized.
また、本発明の第８の形態によれば、第７の形態に記載の消音ユニットを３つ備えた消音構造体であって、３つの消音ユニットは、第１消音ユニット、第２消音ユニット、第４消音ユニットであり、前記第４消音ユニットの第１消音部材の上面の遮音性部材の上に、前記第１消音ユニットの第１消音部材の底面の開口部が配置され、前記第４消音ユニットの第２消音部材の上面の遮音性部材の上に、前記第１消音ユニットの第２消音部材の底面の開口部が配置され、前記第１消音ユニットの第２消音部材の外側面の開口部の右側に、前記第２消音ユニットの第１消音部材の外側面の遮音性部材が配置されている、消音構造体を特徴とする。 Moreover, according to the 8th form of this invention, it is a muffler structure provided with three muffler units as described in a 7th form, and three mute units are a 1st mute unit, a 2nd mute unit, An opening on the bottom surface of the first silencing member of the first silencing unit is disposed on the sound insulating member on the upper surface of the first silencing member of the fourth silencing unit, and the fourth silencing unit. An opening on the bottom surface of the second silencing member of the first silencing unit is disposed on the sound insulating member on the upper surface of the second silencing member of the unit, and an opening on the outer surface of the second silencing member of the first silencing unit The sound deadening structure is characterized in that the sound insulation member on the outer surface of the first sound deadening member of the second sound deadening unit is arranged on the right side of the part.
また、本発明の第９の形態によれば、消音ユニットであって、略直方体形状の第１消音部材と、前記第１消音部材から離間して配置される、略直方体形状の第２消音部材と、前記第１消音部材と、前記第２消音部材の間に、前記第１消音部材及び前記第２消音部材のそれぞれから離間して配置される、略直方体形状の第３消音部材と、前記第１消音部材および前記第３消音部材を接続する吸音板と、前記第２消音部材および前記第３消音部材を接続する吸音板と、を有し、前記第１消音部材の方を向く前記第３消音部材の第１側面は、音響透過性を有する部材を有し、前記第２消音部材の方を向く前記第３消音部材の第２側面は、音響透過性を有する部材を有する、消音ユニットを特徴とする。 Moreover, according to the 9th form of this invention, it is a silencer unit, Comprising: The 1st silencer member of a substantially rectangular parallelepiped shape, and the 2nd silencer member of a substantially rectangular parallelepiped shape spaced apart from the said 1st silencer member And a third silencing member having a substantially rectangular parallelepiped shape disposed between the first silencing member and the second silencing member, spaced apart from each of the first silencing member and the second silencing member, A sound absorbing plate connecting the first silencing member and the third silencing member, and a sound absorbing plate connecting the second silencing member and the third silencing member, and facing the first silencing member. The muffler unit in which the first side surface of the three muffler member has a member having sound permeability, and the second side surface of the third muffler member facing the second muffler member has a member having sound permeability. It is characterized by.
また、本発明の第１０の形態によれば、前記第１消音部材および前記第３消音部材を接続する吸音板は、第３吸音板、第４吸音板を有し、前記第２消音部材および前記第３消音部材を接続する吸音板は、第５吸音板、第６吸音板を有し、前記第３吸音板は、前記第１消音部材の上面と前記第３消音部材の上面とを接続し、前記第４吸音板は、前記第１消音部材の底面と前記第３消音部材の底面とを接続し、前記第５吸音板は、前記第２消音部材
の上面と前記第３消音部材の上面とを接続し、前記第６吸音板は、前記第２消音部材の底面と前記第３消音部材の底面とを接続する、第９の形態に記載の消音ユニットを特徴とする。
According to a tenth aspect of the present invention, the sound absorbing plate connecting the first and third sound absorbing members includes a third sound absorbing plate and a fourth sound absorbing plate, and the second sound absorbing member and The sound absorbing plate to which the third sound absorbing member is connected has a fifth sound absorbing plate and a sixth sound absorbing plate, and the third sound absorbing plate connects the upper surface of the first sound absorbing member and the upper surface of the third sound absorbing member. The fourth sound absorbing plate connects the bottom surface of the first silencer member and the bottom surface of the third silencer member, and the fifth sound absorbing plate connects the top surface of the second silencer member and the third silencer member. The upper surface is connected, and the sixth sound absorbing plate is characterized by the silencing unit according to the ninth embodiment, which connects the bottom surface of the second silencing member and the bottom surface of the third silencing member.
また、本発明の第１１の形態によれば、前記第１消音部材と第３消音部材との間には第１通路が画定されており、前記第３消音部材と第２消音部材との間には第２通路が画定されており、前記第１消音部材の内側面と、前記第３消音部材の第１側面とを接続する、前記第１通路内に配置された第３内部吸音板と、前記第２消音部材の内側面と、前記第３消音部材の第２側面とを接続する、前記第２通路内に配置された第４内部吸音板と、前記第３吸音板と、第４吸音板とを接続する、前記第１通路内に配置された第５内部吸音板と、前記第５吸音板と、第６吸音板とを接続する、前記第２通路内に配置された第５内部吸音板と、の少なくとも一つを有する、第９又は１０の形態に記載の消音ユニットを特徴とする。 According to the eleventh aspect of the present invention, a first passage is defined between the first silencer member and the third silencer member, and between the third silencer member and the second silencer member. A second passage is defined, and a third internal sound absorbing plate disposed in the first passage connecting the inner side surface of the first silencing member and the first side surface of the third silencing member; , A fourth internal sound-absorbing plate disposed in the second passage connecting the inner side surface of the second silencing member and the second side surface of the third silencing member, the third sound-absorbing plate, and a fourth A fifth internal sound absorbing plate disposed in the first passage, connected to the sound absorbing plate, a fifth internal sound absorbing plate, the fifth sound absorbing plate, and a sixth sound absorbing plate connected to the fifth internal sound absorbing plate. The silencer unit according to the ninth or tenth aspect has at least one of an internal sound absorbing plate.
また、本発明の第１２の形態によれば、消音ユニットであって、略直方体形状の第１消音部材と、前記第１消音部材から離間して配置される、略直方体形状の第２消音部材と、を有し、前記第２消音部材の方を向く前記第１消音部材の内側面は、音響透過性を有する部材を有し、前記第１消音部材の内側面の反対側の外側面は遮音性を有する部材を有し、前記第１消音部材の上面は第１開口部を有し、底面は第２開口部を有しており、前記第１消音部材の方を向く前記第２消音部材の内側面は、音響透過性を有する部材を有し、前記第２消音部材の内側面の反対側の外側面は遮音性を有する部材を有し、前記第２消音部材の上面は第１開口部を有し、底面は第２開口部を有している、消音ユニットを特徴とする。 Further, according to the twelfth aspect of the present invention, the silencing unit is a first silencing member having a substantially rectangular parallelepiped shape and a second silencing member having a substantially rectangular parallelepiped shape which is disposed apart from the first silencing member. And the inner side surface of the first silencing member facing the second silencing member has a member having sound permeability, and the outer side surface opposite to the inner side surface of the first silencing member is A second sound-absorbing member having a sound-insulating member, wherein the upper surface of the first silencing member has a first opening, the bottom surface has a second opening, and faces the first silencing member; The inner side surface of the member has a member having sound permeability, the outer side surface opposite to the inner side surface of the second silencing member has a member having sound insulation properties, and the upper surface of the second silencing member has a first surface. Features a muffler unit having an opening and a bottom surface having a second opening.
また、本発明の第１３の形態によれば、第１２の形態に記載の前記消音ユニットを前記第２消音部材の外側面に略直交する第１方向に２つ配置した消音部材層と、前記消音部材層の上に配置された板材と、を備えた、消音構造体を特徴とする。 According to a thirteenth aspect of the present invention, the muffler member layer in which two muffler units according to the twelfth aspect are arranged in a first direction substantially orthogonal to the outer surface of the second muffler member, And a sound-absorbing structure including a plate disposed on the sound-absorbing member layer.
また、本発明の第１４の形態によれば、第１３の形態に記載の消音構造体であって、前記板材は、遮音性を有する第１部材と、吸音板と、遮音性を有する第２部材とがこの順に２回繰り返して前記第１方向に連結されており、第１の消音ユニットの第１消音部材の第１開口部の上に前記板材の遮音性を有する第１部材が配置され、第１の消音ユニットの前記第２消音部材の第１開口部の上に前記板材の遮音性を有する第２部材が配置され、第２の消音ユニットの第１消音部材の第１開口部の上に前記板材の遮音性を有する第１部材が配置され、第２の消音ユニットの前記第２消音部材の第１開口部の上に前記板材の遮音性を有する第２部材が配置されている、消音構造体を特徴とする。 Moreover, according to a fourteenth aspect of the present invention, in the sound deadening structure according to the thirteenth aspect, the plate member includes a first member having sound insulation, a sound absorbing plate, and a second member having sound insulation. The members are connected in the first direction by repeating twice in this order, and the first member having the sound insulating property of the plate material is disposed on the first opening of the first silencer member of the first silencer unit. The second member having the sound insulation of the plate member is disposed on the first opening of the second silencing member of the first silencing unit, and the first opening of the first silencing member of the second silencing unit A first member having sound insulation of the plate material is disposed above, and a second member having sound insulation property of the plate material is disposed on the first opening of the second sound silencing member of the second sound silencing unit. Features a mute structure.
また、本発明の第１５の形態によれば、前記第１消音部材の内部、及び前記第２消音部材の内部には吸音材が充填されている、第１乃至３、５、７、９乃至１１、及び１２のいずれか一の形態に記載の消音ユニットを特徴とする。 According to a fifteenth aspect of the present invention, the first to third, fifth, seventh, ninth to thirty-fifth members are filled with a sound absorbing material inside the first silencer member and the second silencer member. It is characterized by the mute unit according to any one of 11 and 12.
また、本発明の第１６の形態によれば、前記第３消音部材の内部には吸音材が充填されている、第９乃至１１のいずれか一の形態に記載の消音ユニットを特徴とする。 According to a sixteenth aspect of the present invention, there is provided the noise reduction unit according to any one of the ninth to eleventh aspects, wherein the third noise reduction member is filled with a sound absorbing material.
図１Ａは、一実施形態による消音ユニットを概略的に示す斜視図である。図１Ｂは、一実施形態による、図１Ａに示す消音ユニットの断面図である。消音ユニット１００は、たとえば高速道路や地下鉄などの換気設備の換気ダクトの途中に配置される。消音ユニット１００は、換気設備の送風機などから発生する騒音を換気ダクト内で消音させるためのものである。図１Ａは、消音ユニット１００を換気ダクト内に配置したときに状態を示しており、図面の手前側が換気ダクトの上流であり、奥側が換気ダクトの下流であり、気流は上流から下流に流れる。 FIG. 1A is a perspective view schematically showing a silencer unit according to an embodiment. 1B is a cross-sectional view of the silencer unit shown in FIG. 1A, according to one embodiment. The silencer unit 100 is disposed in the middle of a ventilation duct of a ventilation facility such as an expressway or a subway. The silencer unit 100 is for silencing noise generated from a blower or the like of a ventilation facility in a ventilation duct. FIG. 1A shows a state in which the muffler unit 100 is disposed in the ventilation duct. The front side of the drawing is the upstream side of the ventilation duct, the back side is the downstream side of the ventilation duct, and the airflow flows from the upstream side to the downstream side.
図１Ａ及び図１Ｂに示される消音ユニット１００は、第１消音部材１０ａおよび第２消音部材１０ｂを有する。第１消音部材１０ａと第２消音部材１０ｂとは、離間して配置される。第１消音部材１０ａと第２消音部材１０ｂとの間には、気流および音波が通る通路３０が画定される。図１Ａ及び図１Ｂに示されるように、第１消音部材１０ａと第２消音部材１０ｂとは、第１吸音板５０および第２吸音板５２により接続される。 The silencing unit 100 shown in FIGS. 1A and 1B includes a first silencing member 10a and a second silencing member 10b. The first silencing member 10a and the second silencing member 10b are spaced apart. A passage 30 through which airflow and sound waves pass is defined between the first silencing member 10a and the second silencing member 10b. As shown in FIGS. 1A and 1B, the first silencer member 10 a and the second silencer member 10 b are connected by a first sound absorbing plate 50 and a second sound absorbing plate 52.
次に、図２を参照して、本実施形態にかかる第１消音部材１０ａおよび第２消音部材１０ｂの構成を説明する。図２は、第１消音部材１０ａおよび第２消音部材１０ｂの概略斜視図である。図２においては、説明の便宜のため第１吸音板５０、第２吸音板５２は省略してある。第１消音部材１０ａは、長辺ｐ１、短辺ｐ２、高さｐ３（ｐ１＞ｐ２＞ｐ３）の略直方体の構造であり、正面１２ａ、裏面１４ａ、上面１６ａ、底面１８ａ、外側面２０ａ、および内側面２２ａを有する。なお、「正面」、「裏面」、「上面」、および「底面」は、換気ダクトの上流から見た場合の相対的な位置関係を表している。また、「外側面」および「内側面」は、気流が通過する通路３０から見た相対的な位置関係、または対向して配置される第２消音部材１０ｂから見た相対的な位置関係を表している。すなわち
、第１消音部材１０ａの内側面２２ａは、第２消音部材１０ｂの方を向く、第１消音部材１０ａの側面であり、第１消音部材１０ａの外側面２０ａは、内側面２２ａの反対側の側面である。第１消音部材１０ａの内側面２２ａは、第２消音部材１０ｂの内側面２２ｂと略平行に配置される。第２消音部材１０ｂの内側面２２ｂ、外側面２０ｂについても同様に定義される。
Next, with reference to FIG. 2, the structure of the 1st silencer member 10a and the 2nd silencer member 10b concerning this embodiment is demonstrated. FIG. 2 is a schematic perspective view of the first silencing member 10a and the second silencing member 10b. In FIG. 2, the first sound absorbing plate 50 and the second sound absorbing plate 52 are omitted for convenience of explanation. The first silencing member 10a has a substantially rectangular parallelepiped structure having a long side p1, a short side p2, and a height p3 (p1>p2> p3), and includes a front surface 12a, a back surface 14a, an upper surface 16a, a bottom surface 18a, an outer surface 20a, and It has an inner surface 22a. Note that “front”, “back”, “top”, and “bottom” represent relative positional relationships when viewed from the upstream side of the ventilation duct. The “outer side surface” and “inner side surface” represent a relative positional relationship as viewed from the passage 30 through which the airflow passes, or a relative positional relationship as viewed from the second silencing member 10b disposed to face each other. ing. That is, the inner side surface 22a of the first silencing member 10a is the side surface of the first silencing member 10a facing the second silencing member 10b, and the outer side surface 20a of the first silencing member 10a is opposite to the inner side surface 22a. Of the side. The inner side surface 22a of the first silencing member 10a is disposed substantially parallel to the inner side surface 22b of the second silencing member 10b. The same applies to the inner side surface 22b and the outer side surface 20b of the second silencing member 10b.
第１消音部材１０ａの正面１２ａ、裏面１４ａ、上面１６ａ、底面１８ａ、外側面２０ａ、および内側面２２ａは、それぞれ板状の部材から構成され、内部空間を画定する。内部空間には吸音材９０（図１Ｂ）が充てんされる。吸音材９０は、たとえば、グラスウールやロックウール等の繊維質の吸音材料で形成されるが、吸音性を備える限り、他の材料で形成してもよい。吸音材９０はＪＩＳ Ａ６３０１の吸音材料で示されたロックウール吸音材、グラスウール吸音材程度の吸音性能を有することが望ましい。 The front surface 12a, the back surface 14a, the upper surface 16a, the bottom surface 18a, the outer surface 20a, and the inner surface 22a of the first silencing member 10a are each formed of a plate-shaped member and define an internal space. The internal space is filled with a sound absorbing material 90 (FIG. 1B). The sound absorbing material 90 is formed of a fibrous sound absorbing material such as glass wool or rock wool, but may be formed of other materials as long as it has sound absorbing properties. It is desirable that the sound absorbing material 90 has a sound absorbing performance similar to that of the rock wool sound absorbing material and the glass wool sound absorbing material shown by the sound absorbing material of JIS A6301.
内側面２２ａは、音響透過性の部材から形成される。音響透過性の部材は、たとえば、金属繊維板、金属焼結板、多孔板、多孔質セラミックス、発砲コンクリート、ガラスクロス、不織布、多孔質材などの多孔板、およびこれらの任意の組み合わせから形成される。音響透過性の部材は、音響透過性を備える限り、他の材料で形成されてもよい。 The inner side surface 22a is formed from a sound transmissive member. The sound-transmitting member is formed from, for example, a metal fiber plate, a metal sintered plate, a porous plate, porous ceramics, foamed concrete, a glass cloth, a nonwoven fabric, a porous plate such as a porous material, and any combination thereof. The The sound transmitting member may be formed of other materials as long as it has sound transmitting properties.
一方、正面１２ａ、裏面１４ａ、上面１６ａ、底面１８ａ、および外側面２０ａは、音響透過性を有さない遮音性の部材から形成される。遮音性の部材は、たとえば、無孔板であり、無孔板はたとえば、鋼板、アルミ板、およびこれらの任意の組み合わせから形成される。遮音性の部材は、遮音性を備える限り、他の材料で形成されてもよく、望ましい遮音性能は、厚さ０．８ｍｍ程度の薄いアルミ板や鋼板などの金属板が有する遮音性能以上のものである。第２消音部材１０ｂは、第１消音部材１０ａと同一の構成とすることができる。 On the other hand, the front surface 12a, the back surface 14a, the top surface 16a, the bottom surface 18a, and the outer surface 20a are formed from a sound insulating member that does not have sound transmission. The sound insulating member is, for example, a non-porous plate, and the non-porous plate is formed of, for example, a steel plate, an aluminum plate, and any combination thereof. The sound insulating member may be formed of other materials as long as it has sound insulating properties, and the desired sound insulating performance is more than the sound insulating performance possessed by a metal plate such as a thin aluminum plate or steel plate having a thickness of about 0.8 mm. It is. The second silencing member 10b can have the same configuration as the first silencing member 10a.
図１Ａおよび図１Ｂに戻って、消音ユニット１００を構成する第１吸音板５０および第２吸音板５２について説明する。図１Ａ及び図１Ｂに示されるように、第１吸音板５０は、第１消音部材１０ａの上面１６ａと第２消音部材１０ｂの上面１６ｂとを接続し、第２吸音板５２は、第１消音部材１０ａの底面１８ａと第２消音部材１０ｂの底面１８ｂとを接続する。第１吸音板５０および第２吸音板５２は、消音部材（１０ａ、１０ｂ）よりも薄い板状の部材であり、吸音性を有する部材である。吸音性を有する部材は、たとえば・グラスウールやロックウール等の繊維板、アルミ等の金属繊維板などから形成することができる。吸音性を有する部材は、吸音性を備える限り、他の材料で形成されてもよい。第１吸音板５０および第２吸音板５２の厚さは、たとえば、短辺ｐ２の５％以下の厚さを有する。吸音板（５０、５２）をより強度のあるものにするために、各吸音板（５０、５２）の上面の全面に亘って、多孔板を配置してもよい。 Returning to FIG. 1A and FIG. 1B, the first sound absorbing plate 50 and the second sound absorbing plate 52 constituting the muffling unit 100 will be described. As shown in FIG. 1A and FIG. 1B, the first sound absorbing plate 50 connects the upper surface 16a of the first silencer member 10a and the upper surface 16b of the second silencer member 10b, and the second sound absorbing plate 52 is the first silencer. The bottom surface 18a of the member 10a is connected to the bottom surface 18b of the second silencing member 10b. The first sound absorbing plate 50 and the second sound absorbing plate 52 are plate-like members thinner than the sound deadening members (10a, 10b), and are members having sound absorbing properties. The member having sound absorption can be formed from, for example, a fiber plate such as glass wool or rock wool, a metal fiber plate such as aluminum. The member having sound absorbing properties may be formed of other materials as long as it has sound absorbing properties. The thickness of the first sound absorbing plate 50 and the second sound absorbing plate 52 is, for example, 5% or less of the short side p2. In order to make the sound absorbing plate (50, 52) stronger, a perforated plate may be arranged over the entire upper surface of each sound absorbing plate (50, 52).
図１Ａに示される消音ユニット１００によれば、ダクトを通る騒音は消音ユニット１００の通路３０に導かれる。消音部材１０ａ、１０ｂの内側面２２ａ、２２ｂは、音響透過性を有するので、音波の一部は消音部材１０ａ、１０ｂの内部空間に進入する。そのため、消音部材１０ａ、１０ｂの内部空間に充てんされた吸音材９０により消音することができる。また、音波が消音ユニット１００の通路３０を通るときに、音波の一部は第１吸音板５０および第２吸音板５２により吸音される。 According to the silencing unit 100 shown in FIG. 1A, the noise passing through the duct is guided to the passage 30 of the silencing unit 100. Since the inner side surfaces 22a and 22b of the silencing members 10a and 10b have sound permeability, a part of the sound wave enters the internal space of the silencing members 10a and 10b. Therefore, the sound can be silenced by the sound absorbing material 90 filled in the internal space of the sound deadening members 10a and 10b. Further, when the sound wave passes through the passage 30 of the muffler unit 100, a part of the sound wave is absorbed by the first sound absorbing plate 50 and the second sound absorbing plate 52.
次に、図３を参照して、本発明の一実施形態にかかる消音ユニット１００の配列例について説明する。図３は、図１Ａ及び図１Ｂに示す消音ユニット１００を上下左右に９個積み上げ実装した消音構造体２００の断面図である。 Next, with reference to FIG. 3, the example of arrangement | sequence of the silencer unit 100 concerning one Embodiment of this invention is demonstrated. FIG. 3 is a cross-sectional view of a silencing structure 200 in which nine silencing units 100 shown in FIGS. 1A and 1B are stacked and mounted vertically and horizontally.
第１消音ユニット１００ａは、第２消音ユニット１００ｂの左側に連結されている。す
なわち、第１消音ユニット１００ａの第２消音部材１０ｂの外側面２０ｂの遮音性部材は、第２消音ユニット１００ｂの第１消音部材１０ａの外側面２０ａの遮音性部材に連結されている。また、第１消音ユニット１００ａは、第４消音ユニット１００ｄの上側に連結されている。すなわち、第１消音ユニット１００ａの第１消音部材１０ａの底面１８ａの遮音性部材は、第４消音ユニット１００ｄの第１消音部材１０ａの上面１６ａの遮音性部材と連結され、第１消音ユニット１００ａの第２消音部材１０ｂの底面１８ｂの遮音性部材は、第４消音ユニット１００ｄの第２消音部材１０ｂの上面１６ｂの遮音性部材と連結されている。第１消音ユニット１００ａの第２吸音板５２は、第４消音ユニット１００ｄの第１吸音板５０の上に配置されている。
The first silencing unit 100a is connected to the left side of the second silencing unit 100b. In other words, the sound insulation member on the outer surface 20b of the second sound silencing member 10b of the first sound silencing unit 100a is connected to the sound insulation member on the outer surface 20a of the first sound silencing member 10a of the second sound silencing unit 100b. The first silencing unit 100a is connected to the upper side of the fourth silencing unit 100d. That is, the sound insulation member on the bottom surface 18a of the first sound silencing member 10a of the first sound silencing unit 100a is connected to the sound insulation member on the upper surface 16a of the first sound silencing member 10a of the fourth sound silencing unit 100d. The sound insulation member on the bottom surface 18b of the second sound silencing member 10b is connected to the sound insulation member on the upper surface 16b of the second sound silencing member 10b of the fourth sound silencing unit 100d. The second sound absorbing plate 52 of the first silencing unit 100a is disposed on the first sound absorbing plate 50 of the fourth silencing unit 100d.
ここで、図３を用いて第４消音ユニット１００ｄの通路３０内の音波が伝播する経路を説明する。第４消音ユニット１００ｄの通路３０を通る音波の一部は、第４消音ユニット１００ｄの第１吸音板５０で吸音される。第４消音ユニット１００ｄの第１吸音板５０が吸音しなかった残りの音は、隣接する第１消音ユニット１００ａの第２吸音板５２へ向けて伝播する。そして、当該残りの音は、一部が、第１消音ユニット１００ａの第２吸音板５２で吸音される。第１消音ユニット１００ａの第２吸音板５２で吸音されなかった音は、第１消音ユニット１００ａの通路３０へ伝播し、第１消音ユニット１００ａの第１消音部材１０ａ、第２消音部材１０ｂ、第１吸音板５０により吸音される。第１消音ユニット１００ａで吸音されなかった音の一部は、さらに第１吸音板５０から消音構造体２００の外部へ漏れ出る。 Here, the path | route through which the sound wave in the channel | path 30 of the 4th silencer unit 100d propagates is demonstrated using FIG. A part of the sound wave passing through the passage 30 of the fourth silencing unit 100d is absorbed by the first sound absorbing plate 50 of the fourth silencing unit 100d. The remaining sound that has not been absorbed by the first sound absorbing plate 50 of the fourth sound absorbing unit 100d propagates toward the second sound absorbing plate 52 of the adjacent first sound absorbing unit 100a. A part of the remaining sound is absorbed by the second sound absorbing plate 52 of the first silencing unit 100a. The sound that has not been absorbed by the second sound absorbing plate 52 of the first silencing unit 100a propagates to the passage 30 of the first silencing unit 100a, and the first silencing member 10a, the second silencing member 10b, Sound is absorbed by one sound absorbing plate 50. Part of the sound that has not been absorbed by the first silencing unit 100a further leaks from the first sound absorbing plate 50 to the outside of the silencing structure 200.
次に、図４を参照して、本発明の一実施形態にかかる消音ユニット１００の配列例について説明する。図４は、図１Ａに示す消音ユニット１００を上下左右に９個積み上げ実装した消音構造体３００の断面図である。図４に示される消音構造体３００の最上面に配置された消音ユニット（１００ａから１００ｃ）は、図１Ａに示される消音ユニット１００と同様に、第１消音部材１０ａおよび第２消音部材１０ｂ、第２吸音板５２を有する。しかし、消音ユニット（１００ａから１００ｃ）は、図１Ａに示される消音ユニット１００とは異なり、第１吸音板５０のかわりに遮音性の部材が備えられている。すなわち、第１消音部材１０ａの上面１６ａおよび第２消音部材１０ｂの上面１６ｂは遮音性の部材で接続されている。したがって、たとえば、第１消音ユニット１００ａの第２吸音板５２および第１消音部材１０ａおよび第２消音部材１０ｂにより吸音されなかった音は、第１消音ユニット１００ａの第１消音部材１０ａの上面１６ａおよび第２消音部材１０ｂの上面１６ｂを接続する遮音性の部材で遮音される。 Next, with reference to FIG. 4, the example of arrangement | sequence of the silencer unit 100 concerning one Embodiment of this invention is demonstrated. FIG. 4 is a cross-sectional view of a silencing structure 300 in which nine silencing units 100 shown in FIG. The silencing unit (100a to 100c) disposed on the uppermost surface of the silencing structure 300 shown in FIG. 4 is similar to the silencing unit 100 shown in FIG. 1A, and includes a first silencing member 10a, a second silencing member 10b, Two sound absorbing plates 52 are provided. However, the silencing units (100a to 100c) are provided with a sound insulating member instead of the first sound absorbing plate 50, unlike the silencing unit 100 shown in FIG. 1A. That is, the upper surface 16a of the first silencing member 10a and the upper surface 16b of the second silencing member 10b are connected by a sound insulating member. Therefore, for example, the sound that has not been absorbed by the second sound absorbing plate 52, the first sound absorbing member 10a, and the second sound absorbing member 10b of the first sound suppressing unit 100a can be obtained from the upper surface 16a of the first sound absorbing member 10a and Sound insulation is provided by a sound insulating member that connects the upper surface 16b of the second silencing member 10b.
また、図４に示される消音構造体３００の最下面に配置された消音ユニット１００ｇから１００ｉは、図１Ａに示される消音ユニット１００と同様に、第１消音部材１０ａおよび第２消音部材１０ｂ、第１吸音板５０を有する。しかし、消音ユニット１００ｇから１００ｉは、図１Ａに示される消音ユニット１００とは異なり、第２吸音板５２のかわりに遮音性の部材を備えている。すなわち、第１消音部材１０ａの底面１８ａおよび第２消音部材１０ｂの底面１８ｂは遮音性の部材で接続されている。 Further, the silencing units 100g to 100i arranged on the lowermost surface of the silencing structure 300 shown in FIG. 4 are the same as the silencing unit 100 shown in FIG. 1A, the first silencing member 10a and the second silencing member 10b, One sound absorbing plate 50 is provided. However, the silencing units 100g to 100i include a sound insulating member instead of the second sound absorbing plate 52, unlike the silencing unit 100 shown in FIG. 1A. That is, the bottom surface 18a of the first silencing member 10a and the bottom surface 18b of the second silencing member 10b are connected by a sound insulating member.
消音ユニットを複数用いて組み立て消音構造体を構成すると、隣接する２つの消音ユニット１００の外周面を構成する遮音性部材が重複する部分がある。たとえば、図３に示される消音構造体２００において、第１消音ユニット１００ａにおける第２消音部材１０ｂの外側面２０ｂと、第２消音ユニット１００ｂにおける第１消音部材１０ａの外側面２０ａとは、いずれも遮音性部材である。図５から図７に示す実施例では、隣接する２つの消音ユニット１００の消音部材の外周面を構成する遮音性部材が重複しないように構成される。 When an assembled silencing structure is configured by using a plurality of silencing units, there are portions where the sound insulating members constituting the outer peripheral surfaces of two adjacent silencing units 100 overlap. For example, in the silencing structure 200 shown in FIG. 3, both the outer surface 20b of the second silencing member 10b in the first silencing unit 100a and the outer surface 20a of the first silencing member 10a in the second silencing unit 100b are both. It is a sound insulating member. In the embodiment shown in FIGS. 5 to 7, the sound insulating members constituting the outer peripheral surfaces of the sound deadening members of two adjacent sound deadening units 100 are configured not to overlap.
図５Ａは、一実施形態による消音ユニット１００の概略斜視図である。図５Ｂは、図５
Ａに示す消音ユニット１００の断面図である。図５Ｃは、図５Ａに示す消音ユニット１００を上下反転した概略斜視図である。
FIG. 5A is a schematic perspective view of the muffler unit 100 according to an embodiment. 5B is the same as FIG.
It is sectional drawing of the silencer unit 100 shown to A. FIG. FIG. 5C is a schematic perspective view of the muffler unit 100 shown in FIG. 5A turned upside down.
図５Ａから図５Ｃに示される消音ユニット１００は、図１Ａに示される消音ユニット１００と同様に、第１消音部材１０ａおよび第２消音部材１０ｂ、第１吸音板５０を有する。しかし、図５Ａから５Ｃに示される消音ユニット１００は、図１Ａに示される消音ユニット１００とは異なり、第１消音部材１０ａの底面１８ａは開口部４０ａ（図５Ｂおよび図５Ｃ）を有し、第２消音部材１０ｂの底面１８ｂは開口部４０ｂ（図５Ｂおよび図５Ｃ）を有し、第２吸音板５２が設けられていない。その他に関しては図１Ａに示す消音ユニット１００の構成と同様である。 The silencing unit 100 shown in FIGS. 5A to 5C includes a first silencing member 10a, a second silencing member 10b, and a first sound absorbing plate 50, similarly to the silencing unit 100 shown in FIG. 1A. However, the silencing unit 100 shown in FIGS. 5A to 5C is different from the silencing unit 100 shown in FIG. 1A, and the bottom surface 18a of the first silencing member 10a has an opening 40a (FIGS. 5B and 5C). 2 The bottom surface 18b of the silencer 10b has an opening 40b (FIGS. 5B and 5C), and the second sound absorbing plate 52 is not provided. Others are the same as those of the muffler unit 100 shown in FIG. 1A.
吸音材９０を第１消音部材１０ａの内部空間に支持するために、第１消音部材１０ａの開口部４０ａを底面１８ａの一部に設けてもよい。図５Ｃに示されるように、たとえば、開口部４０ａは、底面１８ａの高さｐ３方向の一方の端部９２ａを除いた部分に、長辺ｐ１に亘って設けられる。開口部４０ａからは、第１消音部材１０ａの内部空間に充てんされている吸音材９０が露出している。第２消音部材１０ｂの開口部４０ｂは、第１消音部材１０ａの開口部４０ａと同様に、底面１８ｂの高さｐ３方向の一方の端部９２ｂを除いた部分に、長辺ｐ１に亘って設けてもよい。 In order to support the sound absorbing material 90 in the internal space of the first silencing member 10a, the opening 40a of the first silencing member 10a may be provided in a part of the bottom surface 18a. As shown in FIG. 5C, for example, the opening 40a is provided across the long side p1 in a portion excluding one end 92a in the height p3 direction of the bottom surface 18a. The sound absorbing material 90 filled in the internal space of the first silencing member 10a is exposed from the opening 40a. Similarly to the opening 40a of the first silencing member 10a, the opening 40b of the second silencing member 10b is provided over the long side p1 in a portion excluding one end 92b in the height p3 direction of the bottom surface 18b. May be.
図６は、図５に示す消音ユニット１００を上下左右に任意の数だけ連結させた消音構造体４００の断面図である。第１消音ユニット１００ａは、第４消音ユニット１００ｄの上面に連結されている。第４消音ユニット１００ｄの第１消音部材１０ａの上面１６ａの遮音性を有する部材の上に、第１消音ユニット１００ａの第１消音部材１０ａの底面１８ａの開口部４０ａが配置されている。また、第４消音ユニット１００ｄの第２消音部材１０ｂの上面１６ｂの遮音性を有する部材の上に、第１消音ユニット１００ａの第２消音部材１０ｂの底面１８ｂの開口部４０ｂが配置されている。かかる構成により、第１消音ユニット１００ａは、第４消音ユニット１００ｄの上面（１６ａ及び１６ｂ）に設けられた遮音性を有する部材と、第４消音ユニット１００ｄの第１吸音板５０を、第４消音ユニット１００ｄと共用することができる。 FIG. 6 is a cross-sectional view of a silencing structure 400 in which an arbitrary number of silencing units 100 shown in FIG. 5 are connected vertically and horizontally. The first silencing unit 100a is connected to the upper surface of the fourth silencing unit 100d. The opening 40a of the bottom surface 18a of the first silencing member 10a of the first silencing unit 100a is disposed on the member having the sound insulation property of the upper surface 16a of the first silencing member 10a of the fourth silencing unit 100d. Further, the opening 40b of the bottom surface 18b of the second silencing member 10b of the first silencing unit 100a is disposed on the member having the sound insulation property of the upper surface 16b of the second silencing member 10b of the fourth silencing unit 100d. With such a configuration, the first silencing unit 100a includes a member having sound insulation provided on the upper surface (16a and 16b) of the fourth silencing unit 100d and the first sound absorbing plate 50 of the fourth silencing unit 100d. It can be shared with the unit 100d.
図７は、本発明のさらなる実施形態にかかる消音ユニット１００を上下左右に任意の数だけ連結させた消音構造体５００の断面図である。本実施形態にかかる消音ユニット１００は、第２消音部材１０ｂの外側面２０ｂに開口部４２ｂを有している。従って、本実施形態にかかる第２消音部材１０ｂは、第１消音部材１０ａと異なる構成を有する。すなわち、消音ユニット１００は、図１Ａに示される消音ユニット１００とは異なり、第１消音部材１０ａの底面１８ａに開口部４０ａを有し、第２消音部材１０ｂの底面１８ｂに開口部４０ｂを有し、第２消音部材１０ｂの外側面２０ｂに開口部４２ｂを有しており、第２吸音板５２は設けられていない。その他に関しては図１Ａに示す消音ユニット１００の構成と同様である。 FIG. 7 is a cross-sectional view of a silencing structure 500 in which an arbitrary number of silencing units 100 according to a further embodiment of the present invention are connected vertically and horizontally. The silencing unit 100 according to the present embodiment has an opening 42b on the outer side surface 20b of the second silencing member 10b. Therefore, the second silencing member 10b according to the present embodiment has a configuration different from that of the first silencing member 10a. That is, unlike the silencing unit 100 shown in FIG. 1A, the silencing unit 100 has an opening 40a on the bottom surface 18a of the first silencing member 10a and an opening 40b on the bottom surface 18b of the second silencing member 10b. The second sound absorbing member 10b has an opening 42b on the outer surface 20b, and the second sound absorbing plate 52 is not provided. Others are the same as those of the muffler unit 100 shown in FIG. 1A.
吸音材９０を第２消音部材１０ｂの内部空間に支持するために、第２消音部材１０ｂの開口部４２ｂを外側面２０ｂの一部に設けてもよい。たとえば、開口部４２ｂは、第２消音部材１０ｂの外側面２０ｂの短辺ｐ２方向の両端部９４ｂを除いた部分に、長辺ｐ１に亘って設けられる。開口部４２ｂからは、第２消音部材１０ｂの内部空間に充てんされている吸音材９０が露出する。 In order to support the sound absorbing material 90 in the internal space of the second silencing member 10b, the opening 42b of the second silencing member 10b may be provided in a part of the outer surface 20b. For example, the opening part 42b is provided over the long side p1 in the part except the both ends 94b of the short side p2 direction of the outer side surface 20b of the 2nd muffling member 10b. The sound absorbing material 90 filled in the internal space of the second silencer 10b is exposed from the opening 42b.
第１消音ユニット１００ａは、第４消音ユニット１００ｄの上に連結されている。すなわち、第４消音ユニット１００ｄの第１消音部材１０ａの上面１６ａの遮音性を有する部材の上に、第１消音ユニット１００ａの第１消音部材１０ａの底面１８ａの開口部４０ａが配置され、第４消音ユニット１００ｄの第２消音部材１０ｂの上面１６ｂの遮音性を有
する部材の上に、第１消音ユニット１００ａの第２消音部材１０ｂの底面１８ｂの開口部４０ｂが配置されている。かかる構成により、第１消音ユニット１００ａは、第４消音ユニット１００ｄの上面（１６ａ及び１６ｂ）に設けられた遮音性を有する部材と、第４消音ユニット１００ｄの第１吸音板５０を、第４消音ユニット１００ｄと共用することができる。
The first silencing unit 100a is connected to the fourth silencing unit 100d. That is, the opening 40a of the bottom surface 18a of the first silencing member 10a of the first silencing unit 100a is disposed on the member having the sound insulation property of the upper surface 16a of the first silencing member 10a of the fourth silencing unit 100d, and the fourth The opening 40b of the bottom surface 18b of the second silencing member 10b of the first silencing unit 100a is disposed on the member having the sound insulation property of the upper surface 16b of the second silencing member 10b of the silencing unit 100d. With such a configuration, the first silencing unit 100a includes a member having sound insulation provided on the upper surface (16a and 16b) of the fourth silencing unit 100d and the first sound absorbing plate 50 of the fourth silencing unit 100d. It can be shared with the unit 100d.
また、第１消音ユニット１００ａは、第２消音ユニット１００ｂの左に連結されている。すなわち、第１消音ユニット１００ａの第２消音部材１０ｂの外側面２０ｂの開口部４２ｂの右側に、第２消音ユニット１００ｂの第１消音部材１０ａの外側面２０ａの遮音性部材が配置されている。かかる構成により、第１消音ユニット１００ａは、右に隣接する第２消音ユニット１００ｂの外側面２０ａに設けられた遮音性部材を、第２消音ユニット１００ｂと共用することができる。 The first silencing unit 100a is connected to the left of the second silencing unit 100b. That is, the sound insulation member of the outer side surface 20a of the first silencing member 10a of the second silencing unit 100b is disposed on the right side of the opening 42b of the outer side surface 20b of the second silencing member 10b of the first silencing unit 100a. With this configuration, the first silencing unit 100a can share the sound insulating member provided on the outer surface 20a of the second silencing unit 100b adjacent to the right with the second silencing unit 100b.
図８Ａは、本発明のさらなる実施形態にかかる消音ユニット１００の断面図である。図８Ａに示される消音ユニット１００は、図１Ａに示される消音ユニット１００と同様に、第１消音部材１０ａおよび第２消音部材１０ｂを有する。しかし、図８Ａに示される消音ユニット１００は、図１Ａに示される消音ユニット１００とは異なり、第１消音部材１０ａと、第２消音部材１０ｂの間に、第１消音部材１０ａ及び第２消音部材１０ｂのそれぞれから離間して配置される、第３消音部材１０ｃを備えている。第３消音部材１０ｃは、長辺ｐ１、短辺ｐ２、高さｐ３（ｐ１＞ｐ２＞ｐ３）の略直方体形状である。第１消音部材１０ａと第３消音部材１０ｃの間には第１通路３０ａが画定され、第３消音部材１０ｃと第２消音部材１０ｂとの間には第２通路３０ｂが画定される。 FIG. 8A is a cross-sectional view of a silencer unit 100 according to a further embodiment of the present invention. The silencing unit 100 shown in FIG. 8A includes a first silencing member 10a and a second silencing member 10b, similar to the silencing unit 100 shown in FIG. 1A. However, the silencing unit 100 shown in FIG. 8A differs from the silencing unit 100 shown in FIG. 1A in that the first silencing member 10a and the second silencing member are interposed between the first silencing member 10a and the second silencing member 10b. There is provided a third silencing member 10c that is spaced apart from each of 10b. The third silencing member 10c has a substantially rectangular parallelepiped shape having a long side p1, a short side p2, and a height p3 (p1> p2> p3). A first passage 30a is defined between the first silencing member 10a and the third silencing member 10c, and a second passage 30b is defined between the third silencing member 10c and the second silencing member 10b.
第３消音部材１０ｃは、第１消音部材１０ａあるいは第２消音部材１０ｂと同様に、正面１２ｃ、裏面１４ｃ（不図示）、上面１６ｃ、底面１８ｃを有する。しかし、第３消音部材１０ｃは、第１消音部材１０ａ，第２消音部材１０ｂとは異なり、第３消音部材１０ｃの、第１消音部材１０ａの方を向く第１側面２４と、第３消音部材１０ｃの、第２消音部材１０ｂの方を向く第２側面２６を有し、第１側面２４及び第２側面２６はいずれも、上述の音響透過性の部材から形成される。 The third silencing member 10c has a front surface 12c, a back surface 14c (not shown), an upper surface 16c, and a bottom surface 18c, like the first silencing member 10a or the second silencing member 10b. However, the third silencing member 10c is different from the first silencing member 10a and the second silencing member 10b, and the first side surface 24 of the third silencing member 10c facing the first silencing member 10a and the third silencing member 10c has a second side face 26 facing the second silencing member 10b, and both the first side face 24 and the second side face 26 are formed of the above-described sound-transmitting member.
消音ユニット１００は、第１消音部材１０ａと第３消音部材１０ｃとを接続する第３吸音板５６および第４吸音板５８と、第２消音部材１０ｂと第３消音部材１０ｃとを接続する第５吸音板６０および第６吸音板６２を有する。第３吸音板５６は、第１消音部材１０ａの上面１６ａと第３消音部材１０ｃの上面１６ｃとを接続し、第４吸音板５８は、第１消音部材１０ａの底面１８ａと第３消音部材１０ｃの底面１８ｃとを接続し、第５吸音板６０は、第２消音部材１０ｂの上面１６ｂと第３消音部材１０ｃの上面１６ｃとを接続し、第６吸音板６２は、第２消音部材１０ｂの底面１８ｂと第３消音部材１０ｃの底面１８ｃとを接続する。 The silencing unit 100 includes a third sound absorbing plate 56 and a fourth sound absorbing plate 58 that connect the first silencing member 10a and the third silencing member 10c, and a fifth that connects the second silencing member 10b and the third silencing member 10c. A sound absorbing plate 60 and a sixth sound absorbing plate 62 are provided. The third sound absorbing plate 56 connects the upper surface 16a of the first silencing member 10a and the upper surface 16c of the third silencing member 10c, and the fourth sound absorbing plate 58 includes the bottom surface 18a of the first silencing member 10a and the third silencing member 10c. The fifth sound absorbing plate 60 connects the upper surface 16b of the second silencing member 10b and the upper surface 16c of the third silencing member 10c, and the sixth sound absorbing plate 62 connects to the second silencing member 10b. The bottom surface 18b is connected to the bottom surface 18c of the third silencing member 10c.
上述したように、第１側面２４と、第２側面２６はいずれも音響透過性の部材で形成されるので、第３消音部材１０ｃは、第１通路３０ａ、及び第２通路３０ｂを通る音波を消音する。すなわち、第３消音部材１０ｃは、２つの通路を通過する音波を消音することができる。図３に示す消音構造体２００においては、各通路３０に２つの消音部材が設けられており、たとえば、２つの通路３０を通過する音波は、合計４つの消音部材で吸音する。一方、本実施形態にかかる消音ユニット１００においては、２つの通路を通過する音波を合計３つの消音部材で吸音する。従って、本実施形態によると、消音部材１０の数を減らすことができる。なお、第１消音部材１０ａと第２消音部材１０ｂの間に配置される第３消音部材１０ｃの数は、２つ以上でもよい。 As described above, since both the first side surface 24 and the second side surface 26 are formed of sound-transmitting members, the third silencing member 10c transmits sound waves that pass through the first passage 30a and the second passage 30b. Silence. That is, the third silencing member 10c can silence the sound wave passing through the two passages. In the silencing structure 200 shown in FIG. 3, two silencing members are provided in each passage 30. For example, sound waves passing through the two passages 30 are absorbed by a total of four silencing members. On the other hand, in the muffling unit 100 according to the present embodiment, sound waves passing through two passages are absorbed by a total of three muffling members. Therefore, according to this embodiment, the number of the muffling members 10 can be reduced. In addition, the number of the 3rd silencer members 10c arrange | positioned between the 1st silencer member 10a and the 2nd silencer member 10b may be two or more.
図８Ｂは、図８Ａに示す消音ユニット１００を上下に任意の数だけ（図８Ｂでは３個）
連結させた消音構造体６００の断面図である。図８Ｂに示すように、消音構造体６００を、さらに遮音性を有するケーシング５０１に内挿してもよい。ケーシング５０１は消音構造体６００の上面、底面、両側面を覆うよう形成される。さらに、図示省略したが、ケーシング５０１に内挿された消音構造体６００をコンクリートダクト内に配置してもよい。また、ケーシング５０１に内挿しなくても、消音構造体６００がちょうど収まるような断面を有するコンクリートダクト内に、消音構造体６００を配置してもよい。
FIG. 8B shows an arbitrary number of muffler units 100 shown in FIG. 8A (three in FIG. 8B).
It is sectional drawing of the silencer structure 600 connected. As shown in FIG. 8B, the silencing structure 600 may be further inserted into a casing 501 having sound insulation properties. The casing 501 is formed so as to cover the upper surface, the bottom surface, and both side surfaces of the sound deadening structure 600. Furthermore, although not shown in the figure, the silencer structure 600 inserted in the casing 501 may be arranged in the concrete duct. In addition, the silencing structure 600 may be disposed in a concrete duct having a cross section in which the silencing structure 600 is just accommodated without being inserted into the casing 501.
図９Ａは、板材８０と、一方向に並べられた複数の消音部材１０とを交互に積み上げ実装した消音構造体６００を示す。図９Ａに示される消音構造体６００は、図３に示されるように、吸音板と一体形成された消音ユニットを複数配置して構成されるのではなく、消音部材と分離／連結可能な板材８０を用いて構成される。消音構造体６００は、２つの消音部材１０で構成される消音ユニットを一方向（図９Ａの左右方向）に複数配置した消音部材層と、当該消音部材層の上に配置された板材８０を交互に積み上げて構成される。 FIG. 9A shows a silencing structure 600 in which plate members 80 and a plurality of silencing members 10 arranged in one direction are alternately stacked and mounted. As shown in FIG. 3, the silencing structure 600 shown in FIG. 9A is not configured by arranging a plurality of silencing units integrally formed with the sound absorbing plate, but is a plate material 80 that can be separated / connected to the silencing member. It is configured using. The muffler structure 600 is configured by alternately arranging a muffler member layer in which a plurality of muffler units composed of two muffler members 10 are arranged in one direction (left-right direction in FIG. 9A) and a plate member 80 arranged on the muffler member layer. It is composed by stacking.
板材８０は、遮音性を有する部材（８２、８６）と、吸音板（８４）とを交互に一方向（図９Ａの左右方向）に連結して一体形成されたものである。図９Ａに示されるように、板材８０は、遮音性を有する第１部材８２、吸音板８４、遮音性を有する第２部材８６を、この順に複数回繰り返して一方向に連結されている。板材８０は薄いので、積み上げても容量が小さく可搬性が高い。板材８０の遮音性を有する第１部材８２、第２部材８６の長さは、隣接配置される消音部材１０の高さｐ３に基づいて画定される。 The plate member 80 is integrally formed by connecting sound-insulating members (82, 86) and sound-absorbing plates (84) alternately in one direction (left-right direction in FIG. 9A). As shown in FIG. 9A, the plate member 80 is connected in one direction by repeating a first member 82 having sound insulation, a sound absorbing plate 84, and a second member 86 having sound insulation several times in this order. Since the plate member 80 is thin, it has a small capacity and high portability even when stacked. The lengths of the first member 82 and the second member 86 having sound insulation properties of the plate member 80 are defined based on the height p3 of the silencer member 10 disposed adjacent thereto.
図９Ｂは、図９Ａに示す第１消音部材１０ａの拡大断面図である。第１消音部材１０ａの内側面２２ａは音響透過性を有する部材を有し、第１消音部材１０ａの外側面２０ａは遮音性を有する部材を有する。また第１消音部材１０ａの上面１６ａは第１開口部４４ａを有し、底面１８ａは第２開口部４６ａを有する。吸音材９０を第１消音部材１０ａの内部空間に支持するために、第１消音部材１０ａの第１開口部４４ａを上面１６ａの一部、第２開口部４６ａを底面１８ｂの一部に設けてもよい。たとえば、第１開口部４４ａは、上面１６ａの高さｐ３方向の両端部９６を除いた部分に、長辺ｐ１に亘って設けられる。第２消音部材１０ｂは第１消音部材１０ａと同様の構成を有するが、第２消音部材１０ｂは、第２消音部材１０ｂの内側面２２ｂが、第１消音部材１０ａの内側面２２ａに向くように配置される。 FIG. 9B is an enlarged cross-sectional view of the first silencing member 10a shown in FIG. 9A. The inner side surface 22a of the first silencing member 10a has a member having sound permeability, and the outer side surface 20a of the first silencing member 10a has a member having sound insulation properties. The upper surface 16a of the first silencing member 10a has a first opening 44a, and the bottom surface 18a has a second opening 46a. In order to support the sound absorbing material 90 in the internal space of the first silencing member 10a, the first opening 44a of the first silencing member 10a is provided on a part of the upper surface 16a, and the second opening 46a is provided on a part of the bottom surface 18b. Also good. For example, the 1st opening part 44a is provided over the long side p1 in the part except the both ends 96 of the height p3 direction of the upper surface 16a. The second silencing member 10b has the same configuration as that of the first silencing member 10a, but the second silencing member 10b is arranged such that the inner side surface 22b of the second silencing member 10b faces the inner side surface 22a of the first silencing member 10a. Be placed.
各消音部材１０は、板材８０と分離あるいは連結可能である。したがって、各消音部材１０は、搬送の際には、板材８０から分離して個別に積み上げて運ぶことができ、消音構造体を構成する際には、現場で板材８０と連結して組み立てることができる。図９Ｃは、図９Ａに示す点線部分の拡大図である。図９Ｃに示すように、第１消音部材１０ａの第１開口部４４ａの上に、板材８０の遮音性を有する第１部材８２が配置され、第２消音部材１０ｂの第１開口部４４ｂの上に、板材８０の遮音性を有する第２部材８６が配置されている。第１消音部材１０ａは、第２消音部材１０ｂから離間して配置され、第１消音部材１０ａと第２消音部材１０ｂとの間には、気流および音波が通る通路３０が画定される。板材８０の吸音板８４の下には、第１消音部材１０ａ、第２消音部材１０ｂは配置されない。また、第１消音部材１０ａの第２開口部４６ａの下に、板材８０の遮音性を有する第１部材８２が配置され、第２消音部材１０ｂの第２開口部４６ｂの下に、板材８０の遮音性を有する第２部材８６が配置されている。 Each silencing member 10 can be separated from or connected to the plate member 80. Therefore, each of the muffler members 10 can be separated from the plate member 80 and transported separately when transported, and can be assembled and connected to the plate member 80 at the site when configuring the muffler structure. it can. FIG. 9C is an enlarged view of a dotted line portion shown in FIG. 9A. As shown in FIG. 9C, the first member 82 having the sound insulation property of the plate member 80 is disposed on the first opening 44a of the first silencing member 10a, and above the first opening 44b of the second silencing member 10b. In addition, a second member 86 having a sound insulating property of the plate member 80 is disposed. The first silencing member 10a is disposed away from the second silencing member 10b, and a passage 30 through which airflow and sound waves pass is defined between the first silencing member 10a and the second silencing member 10b. Under the sound absorbing plate 84 of the plate member 80, the first silencing member 10a and the second silencing member 10b are not arranged. In addition, a first member 82 having a sound insulation property of the plate member 80 is disposed under the second opening 46a of the first silencer member 10a, and the plate member 80 is disposed under the second opening 46b of the second silencer member 10b. A second member 86 having sound insulation is disposed.
図９Ａに示される消音構造体６００は、第１方向（図９Ａの左右方向）に延びる１枚の板材８０の上に複数の消音部材１０（図９Ａでは６個）が配置された構成を、第１方向に直交する第２方向（図９Ａの上下方向）に、複数積み上げて、さらに最上部に板材８０を配置した構成を有する。第１方向とは、第２消音部材１０ｂの側面、たとえば外側面２０ｂに略直交する方向である。通路３０内を通過する音波の一部は、第１消音部材１０ａの
内側面２２ａを通過して、第１消音部材１０ａの内部空間に進入し、吸音材９０により消音される。吸音材９０により消音されなかった音は、第１消音部材１０ａの第１開口部４４ａ及び第２開口部４６ａを通過して、上下に隣接する板材８０の遮音性を有する第１部材８２で遮断される。
The silencing structure 600 shown in FIG. 9A has a configuration in which a plurality of silencing members 10 (six in FIG. 9A) are arranged on one plate member 80 extending in the first direction (left-right direction in FIG. 9A). In the second direction (vertical direction in FIG. 9A) orthogonal to the first direction, a plurality of the plates are stacked, and a plate member 80 is arranged on the uppermost part. A 1st direction is a direction substantially orthogonal to the side surface of the 2nd muffling member 10b, for example, the outer surface 20b. A part of the sound wave passing through the passage 30 passes through the inner side surface 22a of the first silencing member 10a, enters the internal space of the first silencing member 10a, and is silenced by the sound absorbing material 90. Sound that has not been muffled by the sound absorbing material 90 passes through the first opening 44a and the second opening 46a of the first muffling member 10a, and is blocked by the first member 82 having sound insulation of the plate material 80 adjacent vertically. Is done.
図１０から図１２は、通路３０内に内部吸音板を様々な態様で配置した消音ユニット１００を例示する。図１Ａに示す消音ユニット１００と同様の構成については説明を省略する。第１内部吸音板７０、第２内部吸音板７２は、第１吸音板５０、第２吸音板５２と同様の部材で形成されることができる。 10 to 12 illustrate the muffler unit 100 in which the internal sound absorbing plate is disposed in the passage 30 in various modes. A description of the same configuration as the mute unit 100 shown in FIG. 1A is omitted. The first internal sound absorbing plate 70 and the second internal sound absorbing plate 72 can be formed of the same members as the first sound absorbing plate 50 and the second sound absorbing plate 52.
図１０Ａは一実施形態による消音ユニット１００の斜視図、図１０Ｂは図１０Ａに示す消音ユニット１００の断面図である。図１０Ａおよび図１０Ｂに示す例では、第１内部吸音板７０は、第１吸音板５０と、前記第２吸音板５２とを接続し、通路３０内に配置される。第１内部吸音板７０は、消音ユニット１００の内側面２２ａ、２２ｂと略平行に、内側面２２ａ、２２ｂから離れて配置される。第１内部吸音板７０は複数でもよい。 10A is a perspective view of the silencing unit 100 according to an embodiment, and FIG. 10B is a cross-sectional view of the silencing unit 100 shown in FIG. 10A. In the example shown in FIGS. 10A and 10B, the first internal sound absorbing plate 70 connects the first sound absorbing plate 50 and the second sound absorbing plate 52 and is disposed in the passage 30. The first internal sound absorbing plate 70 is disposed away from the inner side surfaces 22 a and 22 b so as to be substantially parallel to the inner side surfaces 22 a and 22 b of the muffler unit 100. There may be a plurality of first internal sound absorbing plates 70.
図１１Ａは一実施形態による消音ユニット１００の斜視図、図１１Ｂは図１１Ａに示す消音ユニット１００の断面図である。図１１Ａおよび図１１Ｂに示す例では、第２内部吸音板７２は、第１消音部材１０ａの内側面２２ａと、第２消音部材１０ｂの内側面２２ｂとを接続し、通路３０内に配置される。第２内部吸音板７２は、消音ユニット１００の内側面２２ａ、２２ｂと略直交して、第１吸音板５０、第２吸音板５２から離れて配置される。第２内部吸音板７２は複数でもよい。 11A is a perspective view of the silencing unit 100 according to an embodiment, and FIG. 11B is a cross-sectional view of the silencing unit 100 shown in FIG. 11A. In the example shown in FIG. 11A and FIG. 11B, the second internal sound absorbing plate 72 connects the inner side surface 22a of the first silencing member 10a and the inner side surface 22b of the second silencing member 10b and is disposed in the passage 30. . The second internal sound absorbing plate 72 is disposed away from the first sound absorbing plate 50 and the second sound absorbing plate 52 so as to be substantially orthogonal to the inner side surfaces 22 a and 22 b of the silencer unit 100. A plurality of second internal sound absorbing plates 72 may be provided.
図１２は一実施形態による消音ユニット１００の断面図である。図１２に示す例では、第１内部吸音板７０と、第２内部吸音板７２とが、通路３０内に配置されている。内部吸音板（７０、７２）を、通路３０内に配置することにより、通路３０を通る音波の吸音効果を高めることができる。 FIG. 12 is a cross-sectional view of the silencer unit 100 according to an embodiment. In the example shown in FIG. 12, a first internal sound absorbing plate 70 and a second internal sound absorbing plate 72 are disposed in the passage 30. By arranging the internal sound absorbing plates (70, 72) in the passage 30, the sound absorption effect of the sound wave passing through the passage 30 can be enhanced.
図１３Ａから図１３Ｃは、消音ユニット１００の吸音板を設ける位置、遮音性を有する部材を設ける位置の変更例をそれぞれ示す。図１３Ａに示す消音ユニット１００は、第１消音部材１０ａの上面１６ａおよび第２消音部材１０ｂの上面１６ｂに、遮音性を有する部材を設ける代わりに第１吸音板５０を設け、第１消音部材１０ａの底面１８ａおよび第２消音部材１０ｂの底面１８ｂに、遮音性を有する部材を設ける代わりに、第２吸音板５２を設けている。通路３０内を通過する音波の一部は、第１消音部材１０ａの内側面２２ａを通過して、第１消音部材１０ａの内部空間に進入し、吸音材９０により消音される。吸音材９０により消音されなかった音の一部は、第１消音部材１０ａの上面１６ａに設けられた第１吸音板５０、あるいは底面１８ｂに設けられた第２吸音板５２により吸音される。 FIGS. 13A to 13C show examples of changing the position where the sound absorbing plate of the muffler unit 100 is provided and the position where a member having sound insulation is provided. The silencing unit 100 shown in FIG. 13A is provided with a first sound absorbing plate 50 on the upper surface 16a of the first silencing member 10a and the upper surface 16b of the second silencing member 10b, instead of providing a sound insulating member, and the first silencing member 10a. Instead of providing a sound insulating member on the bottom surface 18a and the bottom surface 18b of the second silencing member 10b, a second sound absorbing plate 52 is provided. A part of the sound wave passing through the passage 30 passes through the inner side surface 22a of the first silencing member 10a, enters the internal space of the first silencing member 10a, and is silenced by the sound absorbing material 90. Part of the sound that has not been silenced by the sound absorbing material 90 is absorbed by the first sound absorbing plate 50 provided on the upper surface 16a of the first sound absorbing member 10a or the second sound absorbing plate 52 provided on the bottom surface 18b.
図１３Ｂに示す消音ユニット１００は、第１消音部材１０ａの上面１６ａおよび第２消音部材１０ｂの上面１６ｂに、遮音性を有する部材を設ける代わりに第１吸音板５０を設け、第１消音部材１０ａの底面１８ａおよび第２消音部材１０ｂの底面１８ｂに、遮音性を有する部材を設ける代わりに、第２吸音板５２を設けている。さらに、図１３Ｂに示す消音ユニット１００は、第１消音部材１０ａの外側面２０ａ、および第２消音部材１０ｂの外側面２０ｂに、吸音板を設けている。すなわち、消音ユニット１００は外周全てが吸音板で構成される。通路３０内を通過する音波の一部は、第１消音部材１０ａの内側面２２ａを通過して、第１消音部材１０ａの内部空間に進入し、吸音材９０により消音される。吸音材９０により消音されなかった音の一部は、第１消音部材１０ａの上面１６ａに設けられた第１吸音板５０、底面１８ｂに設けられた第２吸音板５２、あるいは外側面２０ａに設けられた吸音板により吸音される。 The silencing unit 100 shown in FIG. 13B is provided with a first sound absorbing plate 50 on the upper surface 16a of the first silencing member 10a and the upper surface 16b of the second silencing member 10b, instead of providing a sound insulating member, and the first silencing member 10a. Instead of providing a sound insulating member on the bottom surface 18a and the bottom surface 18b of the second silencing member 10b, a second sound absorbing plate 52 is provided. Furthermore, the noise reduction unit 100 shown in FIG. 13B is provided with sound absorbing plates on the outer side surface 20a of the first noise reduction member 10a and the outer side surface 20b of the second noise reduction member 10b. That is, the entire silencer unit 100 is constituted by a sound absorbing plate. A part of the sound wave passing through the passage 30 passes through the inner side surface 22a of the first silencing member 10a, enters the internal space of the first silencing member 10a, and is silenced by the sound absorbing material 90. A part of the sound that has not been silenced by the sound absorbing material 90 is provided on the first sound absorbing plate 50 provided on the upper surface 16a of the first sound absorbing member 10a, the second sound absorbing plate 52 provided on the bottom surface 18b, or the outer surface 20a. The sound is absorbed by the sound absorbing plate.
図１３Ｃに示す消音ユニット１００は、第１消音部材１０ａの上面１６ａと第２消音部材１０ｂの上面１６ｂを接続する遮音性を有する部材、第１消音部材１０ａの底面１８ａと第２消音部材１０ｂの底面１８ｂを接続する遮音性を有する部材を有する。さらに、図１３Ｃに示す消音ユニット１００は、第１消音部材１０ａの外側面２０ａ、および第２消音部材１０ｂの外側面２０ｂに、吸音板を設けている。通路３０内を通過する音波の一部は、第１消音部材１０ａの内側面２２ａを通過して、第１消音部材１０ａの内部空間に進入し、吸音材９０により消音される。吸音材９０により消音されなかった音の一部は、外側面２０ａに設けられた吸音板により吸音され、あるいは上面１６ａ及び底面１８ｂに設けられた遮音性を有する部材により遮音される。 The silencing unit 100 shown in FIG. 13C includes a sound insulating member that connects the upper surface 16a of the first silencing member 10a and the upper surface 16b of the second silencing member 10b, the bottom surface 18a of the first silencing member 10a, and the second silencing member 10b. A member having a sound insulating property for connecting the bottom surface 18b is provided. Furthermore, the silencing unit 100 shown in FIG. 13C is provided with sound absorbing plates on the outer side surface 20a of the first silencing member 10a and the outer side surface 20b of the second silencing member 10b. A part of the sound wave passing through the passage 30 passes through the inner side surface 22a of the first silencing member 10a, enters the internal space of the first silencing member 10a, and is silenced by the sound absorbing material 90. Part of the sound that has not been muffled by the sound absorbing material 90 is absorbed by the sound absorbing plate provided on the outer side surface 20a, or is sound-insulated by the sound-insulating members provided on the upper surface 16a and the bottom surface 18b.
以上のように本願発明の実施形態を説明してきたが、本発明は上述の実施形態に限定されるものではない。また、上述の実施形態のそれぞれの特徴は互いに矛盾しない限り組み合わせまたは交換することができる。 Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment. The features of the above-described embodiments can be combined or exchanged as long as they do not contradict each other.
１０ａ…第１消音部材
１０ｂ…第２消音部材
１２ａ、１２ｂ…正面
１４ａ、１４ｂ…裏面
１６ａ、１６ｂ、１６ｃ…上面
１８ａ、１８ｂ、１８ｃ…底面
２０ａ、２０ｂ…外側面
２２ａ、２２ｂ…内側面
３０…通路
４０ａ、４０ｂ、４２ｂ…開口部
４４ａ、４４ｂ…第１開口部
４６ａ、４６ｂ…第２開口部
５０…第１吸音板
５２…第２吸音板
５６…第３吸音板
５８…第４吸音板
６０…第５吸音板
６２…第６吸音板
７０…第１内部吸音板
７２…第２内部吸音板
９０…吸音材
９２ａ、９２ｂ、９４ｂ、９６…端部
１００…消音ユニット
２００、３００、４００、５００、６００…消音構造体
10a: first silencing member 10b: second silencing member 12a, 12b ... front surface 14a, 14b ... back surface 16a, 16b, 16c ... upper surface 18a, 18b, 18c ... bottom surface 20a, 20b ... outer surface 22a, 22b ... inner surface 30 ... Passage 40a, 40b, 42b ... opening 44a, 44b ... first opening 46a, 46b ... second opening 50 ... first sound absorbing plate 52 ... second sound absorbing plate 56 ... third sound absorbing plate 58 ... fourth sound absorbing plate 60 ... 5th sound absorbing plate 62 ... 6th sound absorbing plate 70 ... 1st internal sound absorbing plate 72 ... 2nd internal sound absorbing plate 90 ... Sound absorbing material 92a, 92b, 94b, 96 ... End part 100 ... Silencer unit 200, 300, 400, 500 , 600 ... Silencer structure
Claims (16)
略直方体形状の第１消音部材と、
前記第１消音部材から離間して配置される、略直方体形状の第２消音部材と、
前記第１消音部材および前記第２消音部材を接続する吸音板と、を有し、
前記第２消音部材の方を向く前記第１消音部材の内側面は、音響透過性を有する部材を有し、
前記第１消音部材の方を向く前記第２消音部材の内側面は、音響透過性を有する部材を有する、消音ユニット。 A silencer unit,
A first silencing member having a substantially rectangular parallelepiped shape;
A second silencing member having a substantially rectangular parallelepiped shape, spaced apart from the first silencing member;
A sound-absorbing plate connecting the first silencing member and the second silencing member,
The inner surface of the first silencing member facing the second silencing member has a member having sound permeability,
The silencing unit, wherein an inner surface of the second silencing member facing the first silencing member has a member having sound permeability.
前記第１吸音板は、前記第１消音部材の上面と前記第２消音部材の上面とを接続し、
前記第２吸音板は、前記第１消音部材の底面と前記第２消音部材の底面とを接続する、請求項１に記載の消音ユニット。 The sound absorbing plate has a first sound absorbing plate and a second sound absorbing plate,
The first sound absorbing plate connects an upper surface of the first silencing member and an upper surface of the second silencing member,
The silencer unit according to claim 1, wherein the second sound absorbing plate connects the bottom surface of the first silencer member and the bottom surface of the second silencer member.
前記第１吸音板と、前記第２吸音板とを接続する、前記通路内に配置された第１内部吸音板と、
前記第１消音部材の内側面と、前記第２消音部材の内側面とを接続する、前記通路内に配置された第２内部吸音板と、
の少なくとも一方を有する、請求項１又は２に記載の消音ユニット。 A passage is defined between the first silencing member and the second silencing member,
A first internal sound absorbing plate disposed in the passage connecting the first sound absorbing plate and the second sound absorbing plate;
A second internal sound-absorbing plate disposed in the passage connecting the inner side surface of the first silencing member and the inner side surface of the second silencing member;
The muffler unit according to claim 1 or 2, comprising at least one of the following.
前記第１吸音板は、前記第１消音部材の上面と前記第２消音部材の上面とを接続し、
前記第１消音部材の上面は遮音性を有する部材を有し、底面は開口部を有し、
前記第２消音部材の上面は遮音性を有する部材を有し、底面は開口部を有する、請求項１に記載の消音ユニット。 The sound absorbing plate has a first sound absorbing plate,
The first sound absorbing plate connects an upper surface of the first silencing member and an upper surface of the second silencing member,
The upper surface of the first silencing member has a sound insulating member, the bottom surface has an opening,
The silencer unit according to claim 1, wherein the upper surface of the second silencer member has a sound insulating member, and the bottom surface has an opening.
前記第４消音ユニットの第１消音部材の上面の遮音性部材の上に、前記第１消音ユニットの第１消音部材の底面の開口部が配置され、
前記第４消音ユニットの第２消音部材の上面の遮音性部材の上に、前記第１消音ユニットの第２消音部材の底面の開口部が配置されている、消音構造体。 A silencing structure comprising two silencing units according to claim 5, wherein the two silencing units are a fourth silencing unit and a first silencing unit,
An opening on the bottom surface of the first silencing member of the first silencing unit is disposed on the sound insulating member on the top surface of the first silencing member of the fourth silencing unit,
The silencing structure, wherein an opening on the bottom surface of the second silencing member of the first silencing unit is disposed on the sound insulating member on the top surface of the second silencing member of the fourth silencing unit.
前記第２消音部材の外側面は、開口部を有する、請求項５に記載の消音ユニット。 The outer surface of the first silencing member has a member having sound insulation,
The silencer unit according to claim 5, wherein an outer surface of the second silencer member has an opening.
前記第４消音ユニットの第１消音部材の上面の遮音性部材の上に、前記第１消音ユニットの第１消音部材の底面の開口部が配置され、
前記第４消音ユニットの第２消音部材の上面の遮音性部材の上に、前記第１消音ユニットの第２消音部材の底面の開口部が配置され
前記第１消音ユニットの第２消音部材の外側面の開口部の右側に、前記第２消音ユニットの第１消音部材の外側面の遮音性部材が配置されている、消音構造体。 A silencing structure comprising three silencing units according to claim 7, wherein the three silencing units are a first silencing unit, a second silencing unit, and a fourth silencing unit,
An opening on the bottom surface of the first silencing member of the first silencing unit is disposed on the sound insulating member on the top surface of the first silencing member of the fourth silencing unit,
An opening on the bottom surface of the second silencing member of the first silencing unit is disposed on the sound insulating member on the top surface of the second silencing member of the fourth silencing unit, and is located outside the second silencing member of the first silencing unit. The noise-reducing structure, wherein a sound-insulating member on the outer surface of the first noise-reducing member of the second sound-absorbing unit is disposed on the right side of the side opening.
略直方体形状の第１消音部材と、
前記第１消音部材から離間して配置される、略直方体形状の第２消音部材と、
前記第１消音部材と、前記第２消音部材の間に、前記第１消音部材及び前記第２消音部材のそれぞれから離間して配置される、略直方体形状の第３消音部材と、
前記第１消音部材および前記第３消音部材を接続する吸音板と、
前記第２消音部材および前記第３消音部材を接続する吸音板と、を有し、
前記第１消音部材の方を向く前記第３消音部材の第１側面は、音響透過性を有する部材を有し、
前記第２消音部材の方を向く前記第３消音部材の第２側面は、音響透過性を有する部材を有する、消音ユニット。 A silencer unit,
A first silencing member having a substantially rectangular parallelepiped shape;
A second silencing member having a substantially rectangular parallelepiped shape, spaced apart from the first silencing member;
A third silencing member having a substantially rectangular parallelepiped shape disposed between the first silencing member and the second silencing member and spaced apart from each of the first silencing member and the second silencing member;
A sound-absorbing plate connecting the first silencing member and the third silencing member;
A sound-absorbing plate connecting the second silencing member and the third silencing member,
The first side surface of the third silencing member facing the first silencing member has a member having sound permeability,
The silencing unit, wherein the second side surface of the third silencing member facing the second silencing member has a member having sound permeability.
前記第２消音部材および前記第３消音部材を接続する吸音板は、第５吸音板、第６吸音板を有し、
前記第３吸音板は、前記第１消音部材の上面と前記第３消音部材の上面とを接続し、
前記第４吸音板は、前記第１消音部材の底面と前記第３消音部材の底面とを接続し
前記第５吸音板は、前記第２消音部材の上面と前記第３消音部材の上面とを接続し、
前記第６吸音板は、前記第２消音部材の底面と前記第３消音部材の底面とを接続する、請求項９に記載の消音ユニット。 The sound absorbing plate connecting the first sound absorbing member and the third sound absorbing member has a third sound absorbing plate and a fourth sound absorbing plate,
The sound absorbing plate connecting the second sound absorbing member and the third sound absorbing member has a fifth sound absorbing plate and a sixth sound absorbing plate,
The third sound absorbing plate connects the upper surface of the first silencing member and the upper surface of the third silencing member,
The fourth sound absorbing plate connects a bottom surface of the first silencer member and a bottom surface of the third silencer member, and the fifth sound absorbing plate connects an upper surface of the second silencer member and an upper surface of the third silencer member. connection,
The silencer unit according to claim 9, wherein the sixth sound absorbing plate connects a bottom surface of the second silencer member and a bottom surface of the third silencer member.
前記第３消音部材と第２消音部材との間には第２通路が画定されており、
前記第１消音部材の内側面と、前記第３消音部材の第１側面とを接続する、前記第１通路内に配置された第３内部吸音板と、
前記第２消音部材の内側面と、前記第３消音部材の第２側面とを接続する、前記第２通路内に配置された第４内部吸音板と、
前記第３吸音板と、第４吸音板とを接続する、前記第１通路内に配置された第５内部吸音板と、
前記第５吸音板と、第６吸音板とを接続する、前記第２通路内に配置された第５内部吸音板と、
の少なくとも一つを有する、請求項９又は１０に記載の消音ユニット。 A first passage is defined between the first silencing member and the third silencing member,
A second passage is defined between the third silencing member and the second silencing member;
A third internal sound absorbing plate disposed in the first passage connecting the inner side surface of the first silencing member and the first side surface of the third silencing member;
A fourth internal sound absorbing plate disposed in the second passage connecting the inner side surface of the second silencing member and the second side surface of the third silencing member;
A fifth internal sound absorbing plate disposed in the first passage connecting the third sound absorbing plate and the fourth sound absorbing plate;
A fifth internal sound absorbing plate disposed in the second passage connecting the fifth sound absorbing plate and a sixth sound absorbing plate;
The silencer unit according to claim 9 or 10, comprising at least one of the following.
略直方体形状の第１消音部材と、
前記第１消音部材から離間して配置される、略直方体形状の第２消音部材と、
を有し、
前記第２消音部材の方を向く前記第１消音部材の内側面は、音響透過性を有する部材を有し、前記第１消音部材の内側面の反対側の外側面は遮音性を有する部材を有し、前記第１消音部材の上面は第１開口部を有し、底面は第２開口部を有しており、
前記第１消音部材の方を向く前記第２消音部材の内側面は、音響透過性を有する部材を有し、前記第２消音部材の内側面の反対側の外側面は遮音性を有する部材を有し、前記第２消音部材の上面は第１開口部を有し、底面は第２開口部を有している、消音ユニット。 A silencer unit,
A first silencing member having a substantially rectangular parallelepiped shape;
A second silencing member having a substantially rectangular parallelepiped shape, spaced apart from the first silencing member;
Have
An inner surface of the first silencing member facing the second silencing member has a member having sound permeability, and an outer surface opposite to the inner surface of the first silencing member has a member having sound insulation. And the upper surface of the first silencing member has a first opening, the bottom has a second opening,
The inner side surface of the second silencing member facing the first silencing member has a member having sound permeability, and the outer side surface opposite to the inner side surface of the second silencing member has a member having sound insulation properties. A silencing unit having a first opening on the top surface of the second silencing member and a second opening on the bottom surface.
前記消音部材層の上に配置された板材と、を備えた、消音構造体。 A silencing member layer in which two of the silencing units according to claim 12 are arranged in a first direction substantially orthogonal to an outer surface of the second silencing member,
A silencing structure comprising: a plate material disposed on the silencing member layer.
前記板材は、遮音性を有する第１部材と、吸音板と、遮音性を有する第２部材とがこの順に２回繰り返して前記第１方向に連結されており、
第１の消音ユニットの第１消音部材の第１開口部の上に前記板材の遮音性を有する第１部材が配置され、
第１の消音ユニットの前記第２消音部材の第１開口部の上に前記板材の遮音性を有する第２部材が配置され、
第２の消音ユニットの第１消音部材の第１開口部の上に前記板材の遮音性を有する第１部材が配置され、
第２の消音ユニットの前記第２消音部材の第１開口部の上に前記板材の遮音性を有する第２部材が配置されている、消音構造体。 A muffler structure according to claim 13,
The plate member is connected in the first direction by repeating a first member having sound insulation, a sound absorbing plate, and a second member having sound insulation twice in this order,
A first member having a sound insulating property of the plate material is disposed on the first opening of the first silencing member of the first silencing unit,
A second member having sound insulation of the plate material is disposed on the first opening of the second silencing member of the first silencing unit;
A first member having sound insulation of the plate material is disposed on the first opening of the first silencing member of the second silencing unit;
A silencing structure in which a second member having a sound insulation property of the plate material is disposed on the first opening of the second silencing member of the second silencing unit.
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