JPH0614013Y2 - Elbow type silencer - Google Patents
Elbow type silencerInfo
- Publication number
- JPH0614013Y2 JPH0614013Y2 JP1987005464U JP546487U JPH0614013Y2 JP H0614013 Y2 JPH0614013 Y2 JP H0614013Y2 JP 1987005464 U JP1987005464 U JP 1987005464U JP 546487 U JP546487 U JP 546487U JP H0614013 Y2 JPH0614013 Y2 JP H0614013Y2
- Authority
- JP
- Japan
- Prior art keywords
- silencer
- splitter
- elbow
- sound absorbing
- absorbing material
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/02—Influencing flow of fluids in pipes or conduits
- F15D1/04—Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements or elbows with respect to flow, specially for reducing losses in flow
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は空気調和設備又は換気設備の通風ダクト曲り
部に設置して使用するエルボ型の消音器に関するもので
ある。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an elbow-type silencer which is used by being installed in a bent portion of a ventilation duct of an air conditioning equipment or a ventilation equipment.
前記のようなダクト曲り部に設置される従来のエルボ型
消音器として、適当な曲り角（例えば90度の曲り角）を
有するエルボ型の消音器本体１に、グラスウール等の吸
音材２を内張りし、この吸音材２の内面側を多数の小孔
を有する孔開き板３（パンチングメタル）で被包した第
７図に示す吸音材内張り消音器と、適当な曲り角を有す
るエルボ型の消音器本体１に、グラスウール等の吸音材
２を該吸音材と前記本体１との間に空気層４を形成すべ
く内張りし、この吸音材２の空気層４側及び通風路側面
を多数の小孔を有する孔開き板３（パンチングメタル）
で被包した第８図に示す空気層付き吸音材内張り消音器
と、第７図に示したような吸音材内張り消音器の本体内
部（本体１内の通風路曲り部分）に、小円弧形状のガイ
ド・ベーン５を複数枚配設固定した第９図に示すガイド
・ベーン付き消音器と、第７図に示したような吸音材内
張り消音器の本体内部に、大円弧形状のスプリッタ・ベ
ーン６を通風路７を区画するように配設固定した第10図
に示すスプリッタ・ベーン付き消音器の４タイプのエル
ボ型消音器が知られている。As a conventional elbow-type silencer installed in the above-described duct bending portion, an elbow-type silencer body 1 having an appropriate bending angle (for example, a bending angle of 90 degrees) is lined with a sound absorbing material 2 such as glass wool, A sound absorber lining silencer shown in FIG. 7 in which the inner surface of the sound absorber 2 is covered with a perforated plate 3 (punching metal) having a large number of small holes, and an elbow-type silencer body 1 having an appropriate bending angle. In addition, a sound absorbing material 2 such as glass wool is lined to form an air layer 4 between the sound absorbing material and the body 1, and the sound absorbing material 2 has a large number of small holes on the air layer 4 side and the ventilation passage side surface. Perforated plate 3 (punching metal)
In the main body of the sound absorbing material lined silencer with an air layer shown in FIG. 8 and the sound absorbing material lined silencer shown in FIG. In the main body of the silencer with guide vanes shown in FIG. 9 in which a plurality of guide vanes 5 of FIG. There are known four types of elbow-type silencers, namely a silencer with a splitter vane shown in FIG. 10 in which the ventilation passages 6 are divided and fixed.
しかしながら、第７図に示す従来例(1)の吸音材内張り
消音器は、流れ空気の圧力損失が大きい、送風機か
らダクト中を伝搬する騒音またはダクト系で発生した騒
音の低周波数域の減衰量が小さい、本体入口1aから流
入した流れ空気（気流）の偏流により本体出口1bでの乱
れが大きい、このため気流による発生騒音も大きい、と
いう問題がある。However, the sound absorbing material lined silencer of the conventional example (1) shown in FIG. 7 has a large pressure loss of flowing air, the attenuation amount of the noise propagating in the duct from the blower or the noise generated in the duct system in the low frequency range. There is a problem that the turbulence at the main body outlet 1b is large due to the uneven distribution of the flow air (air flow) flowing from the main body inlet 1a, and thus the noise generated by the air flow is also large.
また、第８図に示す従来例(2)の空気層付き吸音材内張
り消音器は、前述した従来例(1)の吸音材内張り消音器
に比して、の低周波数域の減衰量が少し改善される
が、前記の圧力損失及びの気流乱れによる騒音発生
の点については全く変わらない。Further, the sound absorbing material lined muffler with an air layer of the conventional example (2) shown in FIG. 8 has a small amount of attenuation in the low frequency range compared to the sound absorbing material lined muffler of the conventional example (1) described above. Although improved, there is no difference in terms of the above-mentioned pressure loss and noise generation due to air flow turbulence.
一方、第９図に示す従来例(3)のガイド・ベーン付き消
音器及び第10図に示す従来例(5)のスプリッタ・ベーン
付き消音器は、ガイド・ベーン５及びスプリッタ・ベー
ン６の整流効果により圧力損失は小さくなるが、前記ベ
ーン５，６が剥き出しの彎曲鋼板で形成されているため
に、この付設ベーン５，６に気流が当たって騒音が出る
という新たな騒音発生の問題が生じ、前記のようなベー
ン５，６を有しない第７図及び第８図の消音器よりも返
って消音性能が悪いという問題があった。On the other hand, the silencer with a guide vane of the conventional example (3) shown in FIG. 9 and the silencer with a splitter vane of the conventional example (5) shown in FIG. Although the pressure loss is reduced due to the effect, since the vanes 5 and 6 are formed of the exposed curved steel plates, a new noise generation problem occurs in which the attached vanes 5 and 6 are hit by the air flow and generate noise. However, there is a problem that the silencing performance is worse than that of the silencer of FIGS. 7 and 8 which does not have the vanes 5 and 6 as described above.
この考案は前記従来の問題点を解決するために、第９図
のガイド・ベーン５及び第10図のスプリッタ・ベーン６
に変えて、両側壁面に多数の小孔を穿設せる孔開き空洞
ベーンを適用し、この孔開き空洞ベーンの内部空洞にグ
ラスウール等の吸音材を装填した整流機能及び消音機能
を有するスプリッタ構造としたことを特徴とするもので
ある。In order to solve the above-mentioned conventional problems, this invention proposes a guide vane 5 shown in FIG. 9 and a splitter vane 6 shown in FIG.
In place of this, a perforated cavity vane that allows a large number of small holes to be perforated on both wall surfaces is applied, and a splitter structure having a rectifying function and a sound deadening function in which a sound absorbing material such as glass wool is loaded in the inner cavity of the perforated hollow vane. It is characterized by having done.
吸音材を内張りした消音器本体の内部に、前記のような
構造のスプリッタを配設固定すると、本体内張り吸音材
及びスプリッタ装填吸音材の両方の吸音作用で高い音響
減衰量を得ることができ、従来の消音器よりも減音性能
が向上する。また、円弧状曲り部を有した前記スプリッ
タの整流効果により、エルボ曲りによる気流の偏流がな
くなり、圧力損失を小さくすることができると共に、前
記スプリッタの消音機能によってスプリッタ付設による
発生騒音の問題も解消することができる。By disposing and fixing the splitter having the above-described structure inside the silencer body with the sound absorbing material lined, a high acoustic attenuation amount can be obtained by the sound absorbing action of both the body lined sound absorbing material and the splitter loaded sound absorbing material, The noise reduction performance is improved as compared with the conventional silencer. Further, due to the rectifying effect of the splitter having the arc-shaped curved portion, the uneven flow of the air flow due to the elbow bending can be eliminated, the pressure loss can be reduced, and the noise canceling function of the splitter also eliminates the problem of noise generated by the splitter. can do.
以下、この考案の第１の実施例を第１図及び第２図の図
面に従い説明すると、図中11は空気調和設備又は換気設
備の通風ダクトＡ，Ｂの曲り部に第１図の如く接続して
使用されるエルボ型の消音器本体であって、この消音器
本体11は適当な曲り角例えば内角及び外角が直角な90度
の曲り角を有した四角形断面の角曲りエルボとして構成
され、その内面部にグラスウール等の吸音材12a,12bを
内張りし、この吸音材12a,12bの内面側を多数の小孔を
有する孔開き板13a,13b（パンチングメタル）で被包し
た構成となっている。なお、この孔開き板13a,13bは本
体角曲り部と対応する部分が気流の偏流を防止するアー
ル面として形成されている。A first embodiment of the present invention will be described below with reference to the drawings of FIGS. 1 and 2. In the drawing, 11 is connected to the bent portion of the ventilation ducts A and B of the air conditioning equipment or ventilation equipment as shown in FIG. The muffler main body 11 is used as a muffler main body, and the muffler main body 11 is formed as a square-curved elbow having a rectangular cross section with an appropriate bend angle, for example, a 90-degree bend angle at which the inner and outer angles are right angles. A sound absorbing material 12a, 12b such as glass wool is lined in the portion, and the inner surface side of the sound absorbing material 12a, 12b is covered with perforated plates 13a, 13b (punching metal) having many small holes. The perforated plates 13a, 13b are formed as rounded surfaces for preventing uneven flow of airflow at the portions corresponding to the bent portions of the main body.
16は前記消音器本体11の内部に通風路17を二分区画する
ように配設固定した空気の流れを転向し整流するための
円弧状曲り部16aを有する一枚のスプリッタで、このス
プリッタ16は両側壁面に多数の小孔18aを穿設した円弧
状曲り部16aを有する直角折曲形状の孔開き空洞ベーン1
8と、この孔開き空洞ベーン18の内部空洞に装填したグ
ラスウール等の吸音材19とからなる整流機能及び消音機
能を有したスプリッタ構造に構成されている。16 is a single splitter having an arc-shaped curved portion 16a for diverting and rectifying the flow of air arranged and fixed so as to divide the ventilation passage 17 into two parts inside the silencer body 11, and this splitter 16 is Right angle bent perforated hollow vane 1 having arcuate bent portions 16a having a large number of small holes 18a formed on both wall surfaces.
8 and a sound absorbing material 19 such as glass wool loaded in the inner cavity of the perforated cavity vane 18 are configured as a splitter structure having a rectifying function and a sound deadening function.
第３図は吸音材12a,12bを内張りし、その内面側を孔開
き板13a,13bで被包した外角内丸曲りの消音器本体11′
に本考案を適用した第２の実施例を、第４図は空気層14
を形成して内張りした吸音材12a及び該吸音材12aの空気
層14側及び通風路側面を被包する孔開き板13を有する外
角内丸曲りの消音器本体11″に本考案を適用した第３の
実施例を示すもので、この消音器本体11′，11″の内部
に配設固定されるスプリッタ16の構成については、第１
図に示すものと同様であるから同一部分に同符号を付し
て説明を省略する。FIG. 3 shows a silencer main body 11 'with a curved inner corner in which the sound absorbing materials 12a and 12b are lined and the inner surface side is covered with perforated plates 13a and 13b.
A second embodiment in which the present invention is applied to FIG.
The present invention is applied to a silencer main body 11 ″ having an outer corner inside a bend, which has a sound absorbing material 12a that is formed with a liner and a perforated plate 13 that covers the air layer 14 side of the sound absorbing material 12a and the air passage side surface. In the first embodiment of the present invention, the splitter 16 fixedly arranged inside the silencer body 11 ', 11 "will be described with reference to the first embodiment.
Since it is similar to that shown in the figure, the same parts are designated by the same reference numerals and the description thereof is omitted.
第５図は吸音材12a,12bが内張りされる消音器本体11を
外角内角の直角曲りエルボとし、この消音器本体11の内
部に円弧状曲り部16aを有する第１のスプリッタ161と、
この第１スプリッタ161の上側通風路入側部分を区画す
る本体外角部対応位置に円弧状曲り部16bを有した第２
のスプリッタ162と、前記第１スプリッタ161の下側通風
路入側部分を区画する本体内角部対応位置に円弧状曲り
部16cを有した第３のスプリッタ163とを配設固定した第
４の実施例を、また第６図は吸音材12a,12bが内張りさ
れる消音器本体11を外角内角の直角曲りエルボとし、こ
の消音器本体11の内部に通風路17の曲り部と対応する位
置に円弧状曲り部16dを有する長さの短い通風路入側ス
プリッタ160を配設固定した第５の実施例を示す。な
お、この第５図及び第６図の実施例におけるスプリッタ
160〜163の構成については、第１図に示すものと同様で
あるから詳細な構成説明は省略する。また、前記各実施
例は90度の曲り角を有するエルボ型消音器について説明
したが、この消音器本体11（11′，11″）の曲り角は通
風ダクトＡ，Ｂの接続角度に応じて45度，60度，120度
の如く適当な角度に変更し得ること当然である。FIG. 5 shows a silencer body 11 on which sound absorbing materials 12a and 12b are lined as a right-angled elbow with an outside angle and an internal angle, and a first splitter 161 having an arc-shaped bend portion 16a inside the silencer body 11.
A second arc-shaped bent portion 16b is provided at a position corresponding to an outer corner portion of the main body that divides the upper ventilation passage entrance side portion of the first splitter 161.
Fourth embodiment in which the splitter 162 of No. 1 and the third splitter 163 having an arcuate curved portion 16c at a position corresponding to an inner corner portion of the main body that divides the lower ventilation passage entrance side portion of the first splitter 161 are arranged and fixed. An example is also shown in FIG. 6, in which the silencer body 11 on which the sound absorbing materials 12a and 12b are lined is a right-angled elbow with an outside angle and an inside angle. A fifth embodiment will be described in which a short-length ventilation passage inlet side splitter 160 having an arc-shaped curved portion 16d is arranged and fixed. The splitter in the embodiment of FIGS. 5 and 6
The configuration of 160 to 163 is the same as that shown in FIG. 1, and therefore detailed description of the configuration is omitted. Although the above-mentioned embodiments have described the elbow-type silencer having a bending angle of 90 degrees, the bending angle of the silencer body 11 (11 ', 11 ") is 45 degrees depending on the connection angle of the ventilation ducts A and B. Naturally, it can be changed to an appropriate angle such as 60 degrees, 120 degrees.
この考案のエルボ型消音器は吸音材を内張りした消音器
本体の内部に、前記のような消音構造のスプリッタを配
設固定したものであるから、本体内張り吸音材及びスプ
リッタ装填吸音材の両方の吸音作用で高い音響減衰量を
得ることができ、従来の消音器よりも減音性能が向上す
る。また、円弧状曲り部を有した前記スプリッタの整流
効果により、エルボ曲りによる気流の偏流がなくなり、
圧力損失を小さくすることができると共に、前記スプリ
ッタの消音機能によってスプリッタ付設による発生騒音
の問題も解消することができる。従って、この考案によ
れば圧力損失が小さくて、消音性能の高い消音器を提供
することができる。The elbow-type silencer of the present invention is one in which a splitter having the above-described sound deadening structure is disposed and fixed inside the silencer body having a sound absorbing material lined therein. High sound attenuation can be obtained by the sound absorbing action, and the sound reduction performance is improved as compared with the conventional silencer. Further, due to the rectifying effect of the splitter having the arc-shaped curved portion, the drift of the air flow due to the elbow bending is eliminated,
The pressure loss can be reduced, and the problem of noise generated due to the attachment of the splitter can be solved by the silencing function of the splitter. Therefore, according to this invention, it is possible to provide a silencer having a small pressure loss and a high silencing performance.
【図面の簡単な説明】 第１図は本考案の第１の実施例に係わるエルボ型消音器
の構造を示した縦断面図、第２図は同消音器の斜視図、
第３図乃至第６図は本考案の第２乃至第５の実施例に係
わるエルボ型消音器の構造を概略的に示した縦断面図、
第７図乃至第10図は構造形態が異なる従来のエルボ型消
音器の構造を概略的に示した縦断面図である。 Ａ，Ｂ……通風ダクト、11（11′，11″）……エルボ型
の消音器本体、12a,12b……本体内張りの吸音材、13a,1
3b……孔開き板、16（160,161〜163）……スプリッタ、
16a〜16d……スプリッタの円弧状曲り部、17……通風
路、18……孔開き空洞ベーン、18a……小孔、19……孔
開き空洞ベーンの内部空洞に装填した吸音材。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional view showing the structure of an elbow-type silencer according to the first embodiment of the present invention, and FIG. 2 is a perspective view of the silencer.
3 to 6 are longitudinal sectional views schematically showing the structure of an elbow type silencer according to second to fifth embodiments of the present invention,
7 to 10 are vertical sectional views schematically showing the structure of a conventional elbow silencer having a different structure. A, B ... Ventilation duct, 11 (11 ', 11 ") ... Elbow type silencer body, 12a, 12b ... Sound absorbing material lined inside the body, 13a, 1
3b ... perforated plate, 16 (160,161-163) ... splitter,
16a to 16d …… Arc-shaped bend of the splitter, 17 …… Ventilation passage, 18 …… Perforated hollow vane, 18a …… Small hole, 19 …… Sound absorbing material loaded in the internal cavity of the perforated hollow vane.
Claims (1)
り部に設置して使用されるエルボ型の消音器であって、
グラスウール等の吸音材を内張りした適当な曲り角を有
するエルボ型の消音器本体と、この消音器本体の内部に
通風路を区画するように配設固定した空気の流れを転向
し整流するための円弧状曲り部を有する一枚又は複数枚
のスプリッタとを具備し、このスプリッタが両側壁面に
多数の小孔を穿設せる孔開き空洞ベーンの内部空洞にグ
ラスウール等の吸音材を装填した整流・消音機能を有す
るスプリッタ構造に構成されていることを特徴とするエ
ルボ型消音器。1. An elbow-type silencer which is used by being installed in a bent portion of a ventilation duct of an air conditioning equipment or a ventilation equipment,
An elbow type silencer body with an appropriate bending angle lined with a sound absorbing material such as glass wool, and a circle for diverting and rectifying the flow of air fixed and arranged inside the silencer body so as to partition the ventilation passage A rectifier / silencer that is equipped with one or more splitters with arc-shaped bends, and this splitter has a large number of small holes on both wall surfaces. An elbow silencer characterized by having a splitter structure having a function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987005464U JPH0614013Y2 (en) | 1987-01-20 | 1987-01-20 | Elbow type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987005464U JPH0614013Y2 (en) | 1987-01-20 | 1987-01-20 | Elbow type silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63113710U JPS63113710U (en) | 1988-07-22 |
| JPH0614013Y2 true JPH0614013Y2 (en) | 1994-04-13 |
Family
ID=11611953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987005464U Expired - Lifetime JPH0614013Y2 (en) | 1987-01-20 | 1987-01-20 | Elbow type silencer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614013Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8146706B2 (en) | 2006-08-07 | 2012-04-03 | Denso Corporation | Air duct for vehicle air conditioning and air conditioner for vehicle |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2911510B2 (en) * | 1990-01-23 | 1999-06-23 | 株式会社熊谷組 | Silencer |
| JP2948199B2 (en) * | 1997-09-22 | 1999-09-13 | 通彦 川野 | Suction elbow with guide vanes |
| JP2017122559A (en) * | 2016-01-08 | 2017-07-13 | 株式会社荏原製作所 | Corner vane and silencer using corner vane |
| TWI700466B (en) * | 2018-08-13 | 2020-08-01 | 黃渤為 | Muffler structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS515281U (en) * | 1974-06-27 | 1976-01-14 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61142250U (en) * | 1985-02-25 | 1986-09-02 |
-
1987
- 1987-01-20 JP JP1987005464U patent/JPH0614013Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS515281U (en) * | 1974-06-27 | 1976-01-14 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8146706B2 (en) | 2006-08-07 | 2012-04-03 | Denso Corporation | Air duct for vehicle air conditioning and air conditioner for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63113710U (en) | 1988-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6342005B1 (en) | Active noise control for plug fan installations | |
| US6640926B2 (en) | Elbow silencer | |
| WO2019009338A1 (en) | Sound-damping system | |
| JPH0614013Y2 (en) | Elbow type silencer | |
| WO2019009342A1 (en) | Sound-damping system | |
| JP7439657B2 (en) | Silencer | |
| JPS608232Y2 (en) | Silencer | |
| JPH0346715B2 (en) | ||
| JPH07305974A (en) | Silencer | |
| JPH0519600Y2 (en) | ||
| JPH0526407Y2 (en) | ||
| JP3439789B2 (en) | Active silencer | |
| JPH01139952A (en) | Muffler for air conditioner | |
| JP3031450U (en) | Silencer | |
| JPS6245631Y2 (en) | ||
| CN215597743U (en) | Silencer and silencing device | |
| JPH0228346Y2 (en) | ||
| JP3044736B2 (en) | Air conditioning duct noise attenuator | |
| JP2517069Y2 (en) | Resonance / Resonance type silencer elbow | |
| JP2593730B2 (en) | Silencer in ventilation duct system | |
| JPH0272291A (en) | Resonance silencing device for feed air duct | |
| JPS63286647A (en) | Muffler for air conditioning | |
| JPH03181741A (en) | Silencer for air-conditioner | |
| JP2883010B2 (en) | Silencer tower for low frequency noise | |
| JPH02302552A (en) | Muffler for air-conditioning |