JP6660343B2

JP6660343B2 - Silencer

Info

Publication number: JP6660343B2
Application number: JP2017108540A
Authority: JP
Inventors: 博康立石; 慎吾芳賀; 直樹奥原; 和宏津田
Original assignee: Yutaka Giken Co Ltd
Current assignee: Yutaka Giken Co Ltd
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2020-03-11
Anticipated expiration: 2037-05-31
Also published as: JP2018204463A

Description

本発明は、第１および第２シェル半体が相互に結合されて成るシェル内に、インレットパイプが挿通される第１隔壁と、前記インレットパイプとはガス流通方向を異ならせたアウトレットパイプが挿通される第２隔壁とが設けられる消音器に関する。 According to the present invention, a first partition into which an inlet pipe is inserted, and an outlet pipe having a different gas flow direction from the inlet pipe are inserted into a shell formed by connecting the first and second shell halves to each other. And a muffler provided with a second partition wall.

このような消音器は、たとえば特許文献１で知られている。 Such a silencer is known, for example, from Patent Document 1.

特開２０１５−１４２０９号公報JP 2015-14209 A

上記特許文献１で開示される消音器では、インレットパイプおよびアウトレットパイプがシェル内で湾曲するように形成され、それらのインレットパイプおよびアウトレットパイプが、相互に平行に配置される一対の隔壁に挿通されるように構成されており、消音器の組み付け時に一対の隔壁の位置決めが難しく、一対の隔壁へのインレットパイプおよびアウトレットパイプの挿入に高い精度が要求されるという課題がある。 In the silencer disclosed in Patent Document 1, the inlet pipe and the outlet pipe are formed to be curved in the shell, and the inlet pipe and the outlet pipe are inserted through a pair of partition walls arranged in parallel with each other. Therefore, it is difficult to position the pair of partition walls when assembling the muffler, and there is a problem that high precision is required for inserting the inlet pipe and the outlet pipe into the pair of partition walls.

本発明は、かかる事情に鑑みてなされたものであり、一対の隔壁のシェル内での位置決めを容易とした消音器を提供することを目的とする。 The present invention has been made in view of such circumstances, and has as its object to provide a muffler that facilitates positioning of a pair of partition walls in a shell.

上記目的を達成するために、本発明は、第１および第２シェル半体が相互に結合されて成るシェル内に、インレットパイプが挿通される第１隔壁と、前記インレットパイプとはガス流通方向を異ならせたアウトレットパイプが挿通される第２隔壁とが設けられる消音器において、前記第１隔壁および前記第２隔壁の一方の外周の一部に、前記第１隔壁および前記第２隔壁の他方が有する平面部に当接するようにして直線状に延びる当接部が設けられ、前記第１隔壁および前記第２隔壁の一方の外周のうち前記当接部を除く残余の部分と、前記第１隔壁および前記第２隔壁の他方の外周とが、前記シェルの内面に接合され、前記シェル内に、前記第１隔壁および前記第２隔壁の他方と前記シェルとで規定される吸音室が形成され、前記アウトレットパイプのうち前記吸音室に充填される吸音材で囲まれる部分に、複数の小孔が穿設されることを第１の特徴とする。 In order to achieve the above object, the present invention provides a fuel cell system comprising: a first partition in which an inlet pipe is inserted in a shell in which a first and a second shell half are connected to each other; A muffler provided with a second partition into which an outlet pipe having a different shape is inserted, and a part of the outer periphery of one of the first and second partitions, and the other of the first and second partitions. A contact portion extending in a straight line so as to contact the flat portion of the first partition and the remaining portion of the outer periphery of one of the first partition and the second partition except for the contact portion; and the other of the outer periphery of the partition wall and the second partition wall is joined to the inner surface of the shell, the shell, the acoustic chamber defined by the first partition and the second partition wall other and the shell is formed The outlay The portion surrounded by sound absorbing material filled in the acoustic chamber of the heat pipe, the first, wherein a plurality of small holes are bored.

本発明は、第１の特徴の構成に加えて、前記第１シェル半体が平面状の底壁を有しつつ上方に開いた椀状に形成され、前記第２シェル半体が前記底壁に対向する天井壁を有しつつ下方に開いた椀状に形成され、前記天井壁が、前記底壁との間隔を前記天井壁の他の部分よりも小さくした低位部と、その低位部よりも前記底壁との間隔を大きくした高位部と、前記低位部側に向かうにつれて前記底壁に近付くように湾曲して前記低位部および前記高位部間を結ぶ連結部とを有するように形成され、前記平面部を有する前記第２隔壁の外周が、前記天井壁の前記低位部および前記底壁に当接するようにして前記第１および第２シェル半体に接合され、前記第２隔壁の前記平面部に前記第１隔壁の外周の一部に設けられる当接部が当接され、前記シェル内に、前記第２隔壁を前記吸音室との間に介在させるとともに第１隔壁の両側に配置される一対の共鳴室が形成されることを第２の特徴とする。 According to the present invention, in addition to the configuration of the first aspect , the first shell half is formed in an upwardly-opening bowl shape having a flat bottom wall, and the second shell half is formed of the bottom wall. The ceiling wall is formed in a bowl shape that opens downward while having a ceiling wall facing the ceiling wall, and the ceiling wall has a lower portion whose interval with the bottom wall is smaller than other portions of the ceiling wall, and a lower portion than the lower portion. And a connecting portion connecting the lower portion and the higher portion by bending so as to approach the bottom wall toward the lower portion side. , The outer periphery of the second partition having the flat portion is joined to the first and second shell halves such that the outer periphery of the second partition abuts on the lower portion and the bottom wall of the ceiling wall, and A contact portion provided on a part of the outer periphery of the first partition wall is in contact with the flat portion, and In Le, a second feature in that the pair of resonance chambers which are arranged on both sides of the first partition wall with interposed between the second partition wall the sound absorbing chamber is formed.

本発明は、第１および第２シェル半体が相互に結合されて成るシェル内に、インレットパイプが挿通される第１隔壁と、前記インレットパイプとはガス流通方向を異ならせたアウトレットパイプが挿通される第２隔壁とが設けられる消音器において、前記第１隔壁の外周の一部に、前記第２隔壁が有する平面部に当接するようにして直線状に延びる当接部が設けられ、前記第１隔壁の外周のうち前記当接部を除く残余の部分と、前記第２隔壁の外周とが、前記シェルの内面に接合され、前記第１シェル半体が平面状の底壁を有しつつ上方に開いた椀状に形成され、第２シェル半体が前記底壁に対向する天井壁を有しつつ下方に開いた椀状に形成され、前記天井壁が、前記底壁との間隔を前記天井壁の他の部分よりも小さくした低位部と、その低位部よりも前記底壁との間隔を大きくした高位部と、前記低位部側に向かうにつれて前記底壁に近付くように湾曲して前記低位部および前記高位部間を結ぶ連結部とを有するように形成され、前記第２隔壁の外周が、前記天井壁の前記低位部および前記底壁に当接するようにして前記第１および第２シェル半体に接合され、前記第２隔壁の前記平面部に前記第１隔壁の外周の一部に設けられる当接部が当接され、前記シェル内に、前記第２隔壁を前記吸音室との間に介在させるとともに第１隔壁の両側に配置される一対の共鳴室が形成されることを第３の特徴とする。According to the present invention, a first partition into which an inlet pipe is inserted, and an outlet pipe having a different gas flow direction from the inlet pipe are inserted into a shell formed by connecting the first and second shell halves to each other. A silencer provided with a second partition to be provided, a part of the outer periphery of the first partition is provided with a contact portion extending linearly so as to contact a flat portion of the second partition, The remaining portion of the outer periphery of the first partition other than the contact portion and the outer periphery of the second partition are joined to the inner surface of the shell, and the first shell half has a flat bottom wall. A second shell half having a ceiling wall facing the bottom wall and having a bowl shape opened downward, wherein the ceiling wall is spaced from the bottom wall. A lower portion smaller than the other portion of the ceiling wall, A higher portion having a larger distance from the bottom wall than the lower portion, and a connecting portion that curves so as to approach the bottom wall toward the lower portion and connects the lower portion and the higher portion. And the outer periphery of the second partition wall is joined to the first and second shell halves such that the outer periphery of the second partition wall comes into contact with the lower portion and the bottom wall of the ceiling wall, and the flat portion of the second partition wall is formed. And a contact portion provided on a part of the outer periphery of the first partition is in contact with the first partition, and the second partition is interposed between the first partition and the sound absorbing chamber in the shell, and is disposed on both sides of the first partition. A third feature is that a pair of resonance chambers is formed.

さらに本発明は、第１〜第３の特徴の構成のいずれかに加えて、前記第１隔壁および前記第２隔壁が直交して配置され、前記インレットパイプの少なくとも前記第１隔壁に挿通される部分が前記第１隔壁に直交して配置され、前記アウトレットパイプの少なくとも前記第２隔壁に挿通される部分が前記第２隔壁に直交して配置されることを第４の特徴とする。Further, according to the present invention, in addition to any one of the first to third features, the first partition and the second partition are arranged orthogonally, and are inserted into at least the first partition of the inlet pipe. A fourth feature is that a portion is disposed orthogonal to the first partition, and at least a portion of the outlet pipe inserted into the second partition is disposed orthogonal to the second partition.

本発明の第１の特徴によれば、第１隔壁および第２隔壁の一方の外周の一部に形成されて直線状に延びる当接部が、第１隔壁および第２隔壁の他方が有する平面部に当接し、第１隔壁および第２隔壁の一方の外周のうち当接部を除く残余の部分と、第１隔壁および第２隔壁の他方の外周とがシェルの内面に接合されるので、組み付け時に、第１および第２隔壁はシェルの内面で支持されるとともに第１および第２隔壁の相互当接部で支持されることになり、シェル内での第１および第２隔壁の位置決めが容易となり、それにより消音器の製造を容易としてコスト低減を図ることができる。また第１および第２隔壁の剛性を高め、それらの隔壁の振動を抑制することができる。 According to the first feature of the present invention, the contact portion formed on a part of the outer circumference of one of the first partition and the second partition and extending linearly has a flat surface that the other of the first partition and the second partition has. Abuts on the inner surface of the shell because the remaining portion of the outer periphery of one of the first and second partitions except for the abutting portion and the other outer periphery of the first and second partitions are joined to the inner surface of the shell. At the time of assembling, the first and second partitions are supported by the inner surface of the shell and are supported by the mutual contact portions of the first and second partitions, so that the positioning of the first and second partitions in the shell is achieved. This facilitates the production of the muffler, thereby reducing costs. In addition, the rigidity of the first and second partitions can be increased, and the vibration of those partitions can be suppressed.

また、シェル内に形成される吸音室に吸音材が充填され、アウトレットパイプのうち吸音材で囲まれる部分に複数の小孔が穿設されるので、ガスの出口付近で高周波の音を効果的に低減することができる。 Also, the sound absorbing material is filled in the sound absorbing chamber that is formed in the shell, a plurality of small holes in a portion surrounded by the sound absorbing material of the outlet pipe is drilled, the effect of high-frequency sound in the vicinity of the outlet of the gas Can be effectively reduced .

本発明の第２，第３の特徴によれば、平面部を有する第２隔壁の外周が、第１シェル半体の底壁と、第２シェル半体の天井壁の低位部とに当接するようにして第１および第２シェル半体に接合されるので、第１および第２シェル半体の結合方向での第２隔壁の位置決め性が高くなる。 According to the second and third features of the present invention, the outer periphery of the second partition having the flat portion contacts the bottom wall of the first shell half and the lower portion of the ceiling wall of the second shell half. In this way, the first and second shell halves are joined to each other, so that the positioning of the second partition wall in the joining direction of the first and second shell halves is improved.

さらに本発明の第４の特徴によれば、第１隔壁および第２隔壁が直交して配置され、インレットパイプの少なくとも第１隔壁に挿通される部分が第１隔壁に直交し、アウトレットパイプの少なくとも第２隔壁に挿通される部分が第２隔壁に直交しているので、インレットパイプおよびアウトレットパイプをほぼ直管状としても、ガスの出入り方向をほぼ９０度変化させることができ、消音器の配置上の自由度が増大する。Further, according to the fourth feature of the present invention, the first partition and the second partition are arranged orthogonally, and at least a portion of the inlet pipe inserted into the first partition is orthogonal to the first partition, and at least the outlet pipe has Since the portion inserted into the second partition is orthogonal to the second partition, even if the inlet pipe and the outlet pipe are substantially straight pipes, the direction of gas inflow and outflow can be changed by almost 90 degrees. Is increased.

消音器の横断平面図である。It is a cross-sectional plan view of a silencer. 図１の２矢視方向から見た消音器の縦断側面図である。FIG. 2 is a longitudinal sectional side view of the silencer as viewed from the direction of arrow 2 in FIG. 1. 図１の３−３線断面図である。FIG. 3 is a sectional view taken along line 3-3 of FIG. 1. 図３の４矢示部拡大図である。FIG. 4 is an enlarged view of a portion indicated by arrow 4 in FIG. 3. 図１の５−５線矢視方向から見た第２隔壁およびアウトレットパイプの側面図である。FIG. 5 is a side view of the second partition wall and the outlet pipe as viewed from the direction of arrows 5-5 in FIG. 1.

以下、本発明の実施の形態について添付の図１〜図５を参照しながら説明すると、先ず図１〜図３において、たとえば四輪車両用内燃機関の排気系に用いられる消音器のシェル１１は、第１および第２シェル半体１２，１３が相互に結合されて成るものであり、第１シェル半体１２は、平面状の底壁１２ａを有しつつ上方に開いた椀状に形成され、第２シェル半体１３は、前記底壁１２ａに対向する天井壁１３ａを有しつつ下方に開いた椀状に形成される。第１シェル半体１２の上端には側方に張り出す第１フランジ１２ｂが一体に形成され、第２シェル半体１３の下端には側方に張り出す第２フランジ１３ｂが一体に形成され、第１および第２フランジ１２ｂ，１３ｂが溶接によって相互に結合される。 Hereinafter, an embodiment of the present invention will be described with reference to the attached FIGS. 1 to 5. First, in FIGS. 1 to 3, for example, a shell 11 of a silencer used in an exhaust system of an internal combustion engine for a four-wheel vehicle is provided. , The first and second shell halves 12 and 13 are connected to each other. The first shell half 12 is formed in an upwardly open bowl shape having a planar bottom wall 12a. The second shell half 13 has a ceiling wall 13a facing the bottom wall 12a and is formed in a bowl shape opened downward. At the upper end of the first shell half 12, a first flange 12b extending laterally is integrally formed, and at the lower end of the second shell half 13, a second flange 13b extending laterally is integrally formed. The first and second flanges 12b, 13b are connected to each other by welding.

第２シェル半体１３の前記天井壁１３ａは、前記第１シェル半体１２の前記底壁１２ａとの間隔を前記天井壁１３ａの他の部分よりも小さくした低位部１３ａａと、その低位部１３ａａよりも前記底壁１２ａとの間隔を大きくした高位部１３ａｂと、低位部１３ａａ側に向かうにつれて前記底壁１２ａに近付くように湾曲して前記低位部１３ａａおよび前記高位部１３ａｂ間を結ぶ連結部１３ａｃとを有するように形成される。 The ceiling wall 13a of the second shell half 13 has a lower portion 13aa in which the distance from the bottom wall 12a of the first shell half 12 is smaller than other portions of the ceiling wall 13a, and the lower portion 13aa. A higher portion 13ab having a larger distance from the bottom wall 12a than the lower portion 13aa, and a connecting portion 13ac which curves toward the lower wall 12a toward the lower portion 13aa and connects the low portion 13aa and the high portion 13ab. Are formed.

前記シェル１１内には、インレットパイプ１４が挿通される第１隔壁１７と、第１および第２のアウトレットパイプ１５，１６が挿通される第２隔壁１８とが設けられる。前記インレットパイプ１４でのガス流通方向が図１の矢印１９で示す方向であるのに対して、第１および第２のアウトレットパイプ１５，１６でのガス流通方向は図１の矢印２０で示す方向であり、インレットパイプ１４と、第１および第２のアウトレットパイプ１５，１６とでは、ガス流通方向が、この実施の形態ではほぼ９０度異なるようにして相互に異なるように設定されている。 In the shell 11, a first partition 17 through which the inlet pipe 14 is inserted and a second partition 18 through which the first and second outlet pipes 15 and 16 are inserted are provided. The gas flow direction in the inlet pipe 14 is the direction shown by the arrow 19 in FIG. 1, while the gas flow direction in the first and second outlet pipes 15 and 16 is the direction shown by the arrow 20 in FIG. In the inlet pipe 14 and the first and second outlet pipes 15 and 16, the gas flow directions are set to be different from each other by substantially 90 degrees in this embodiment.

図４を併せて参照して、前記第１隔壁１７および前記第２隔壁１８の一方の外周の一部、この実施の形態では第１隔壁１７の外周の一部に直線状に延びる当接部２１が設けられ、前記第１隔壁１７および前記第２隔壁１８の他方が有する平面部２２に前記当接部２１が当接される。この実施の形態では、第１隔壁１７は、平坦な第１平板部１７ａの外周に第１平板部１７ａの一側に張り出す第１鍔部１７ｂが一体に設けられて成り、前記当接部２１は、前記第１鍔部１７ｂの一部が直線状に延びるように形成されて成る。また前記第２隔壁１８は、平坦な第２平板部１８ａの外周に第２平板部１８ａの一側に張り出す第２鍔部１８ｂが一体に設けられて成り、前記平面部２２は、前記第２平板部１８ａの一部として形成される。また前記第１隔壁１７の外周の第１鍔部１７ｂのうち前記当接部２１を除く残余の部分と、前記第２隔壁１８の外周の第２鍔部１８ｂが、前記シェル１１の内面に接合される。 Referring also to FIG. 4, a contact portion extending linearly on a part of the outer periphery of one of the first partition 17 and the second partition 18, in this embodiment, a part of the outer periphery of the first partition 17. 21 is provided, and the contact portion 21 is brought into contact with the flat portion 22 of the other of the first partition 17 and the second partition 18. In this embodiment, the first partition wall 17 is formed by integrally providing a first flange portion 17b projecting to one side of the first flat plate portion 17a on the outer periphery of the flat first flat plate portion 17a, and Reference numeral 21 is formed so that a part of the first flange portion 17b extends linearly. Further, the second partition wall 18 is formed by integrally providing a second flange portion 18b projecting to one side of the second flat plate portion 18a on the outer periphery of the flat second flat plate portion 18a. It is formed as a part of the two flat plate portions 18a. The remaining portion of the outer periphery of the first partition 17 other than the abutment portion 21 of the first flange 17 b and the second outer periphery 18 b of the second partition 18 are joined to the inner surface of the shell 11. Is done.

ところで前記第１隔壁１７および前記第２隔壁１８は相互に直交して配置されており、前記シェル１１内には、前記第２隔壁１８および前記シェル１１で規定される吸音室２４が形成されるとともに、前記第２隔壁１８を前記吸音室２４との間に介在させて第１隔壁１７の両側に配置される一対の共鳴室２５，２６が形成される。 Incidentally, the first partition 17 and the second partition 18 are arranged orthogonal to each other, and a sound absorbing chamber 24 defined by the second partition 18 and the shell 11 is formed in the shell 11. At the same time, a pair of resonance chambers 25 and 26 arranged on both sides of the first partition 17 with the second partition 18 interposed between the sound absorbing chamber 24 and the second partition 18 are formed.

また前記インレットパイプ１４の少なくとも前記第１隔壁１７に挿通される部分が前記第１隔壁１７に直交して配置されるものであり、この実施の形態では、前記インレットパイプ１４が、前記第１隔壁１７に挿通される直管部１４ａと、その直管部１４ａの一端部から屈曲してわずかに延びる屈曲管部１４ｂとを一体に有するように形成される。前記シェル１１の第２シェル半体１３における前記天井壁１３ａの前記連結部１３ａｃに設けられた入口側支持筒部２７に前記屈曲管部１４ｂが挿通、支持され、前記屈曲管部１４ｂの一端部は入口２８として機能すべく前記シェル１１の外方に開口し、前記第１隔壁１７の第１平板部１７ａに挿通される前記直管部１４ａは上下２箇所の溶接部２３で前記第１平板部１７ａに結合され、前記直管部１４ａの他端部は、前記一対の共鳴室２５，２６の一方２５に開口される。 In addition, at least a portion of the inlet pipe 14 that is inserted into the first partition 17 is disposed orthogonal to the first partition 17. In this embodiment, the inlet pipe 14 is connected to the first partition 17. The straight tube portion 14a inserted into the tube 17 and a bent tube portion 14b bent slightly from one end of the straight tube portion 14a are integrally formed. In the second shell half 13 of the shell 11, the bent tube portion 14b is inserted into and supported by an inlet side support tube portion 27 provided at the connection portion 13ac of the ceiling wall 13a, and one end of the bent tube portion 14b is supported. Is opened to the outside of the shell 11 to function as an inlet 28, and the straight pipe portion 14a inserted into the first flat plate portion 17a of the first partition 17 is connected to the first flat plate portion by two upper and lower welded portions 23. The other end of the straight pipe portion 14a is opened to one of the pair of resonance chambers 25 and 26.

ところで前記第２隔壁１８の外周の第２鍔部１８ｂは、第１シェル半体１２の前記底壁１２ａと、第２シェル半体１３の前記天井壁１３ａの前記低位部１３ａａとに当接するようにして前記第１および第２シェル半体１２，１３に接合され、前記第１および第２のアウトレットパイプ１５，１６の少なくとも前記第２隔壁１８に挿通される部分は前記第２隔壁１８に直交して配置されており、この実施の形態では、第１および第２のアウトレットパイプ１５，１６の両方の全体が直管状に形成される。 By the way, the second flange portion 18b on the outer periphery of the second partition wall 18 comes into contact with the bottom wall 12a of the first shell half 12 and the lower portion 13aa of the ceiling wall 13a of the second shell half 13. The first and second outlet pipes 15, 16 are joined to the first and second shell halves 12, 13, and at least portions of the first and second outlet pipes 15, 16 inserted through the second partition 18 are orthogonal to the second partition 18. In this embodiment, both the first and second outlet pipes 15 and 16 are formed in a straight tubular shape.

図５を併せて参照して、第１および第２のアウトレットパイプ１５，１６は、第１アウトレットパイプ１５が第１隔壁１７および第２アウトレットパイプ１６間に配置されるように並列配置されており、前記第２隔壁１８の第２平板部１８ａに挿通される第１および第２のアウトレットパイプ１５，１６は上下２箇所の溶接部２９で前記第２平板部１８ａに結合される。第１および第２のアウトレットパイプ１５，１６の一端部は、前記一対の共鳴室２５，２６の他方２６に開口されており、前記第１シェル半体１２の第１フランジ１２ｂならびに前記第２シェル半体１３の第２フランジ１３ｂの一部をそれぞれ半円状に湾曲させることで形成される第１および第２出口側接続管部３０，３１に第１および第２のアウトレットパイプ１５，１６がそれぞれ挿通、支持され、前記第１および第２のアウトレットパイプ１５，１６の他端部は出口３２，３３として前記シェル１１の外方に開口される。 Referring also to FIG. 5, the first and second outlet pipes 15 and 16 are arranged in parallel such that the first outlet pipe 15 is arranged between the first partition wall 17 and the second outlet pipe 16. The first and second outlet pipes 15 and 16 inserted into the second flat plate portion 18a of the second partition wall 18 are joined to the second flat plate portion 18a by two upper and lower welded portions 29. One end of the first and second outlet pipes 15 and 16 is open to the other 26 of the pair of resonance chambers 25 and 26, and the first flange 12b of the first shell half 12 and the second shell First and second outlet pipes 15, 16 are formed in first and second outlet connection pipe sections 30, 31 formed by bending a part of the second flange 13b of the half body 13 into a semicircular shape, respectively. The other ends of the first and second outlet pipes 15 and 16 are opened as outlets 32 and 33 outside the shell 11 respectively.

また前記第１および第２のアウトレットパイプ１５，１６のうち前記吸音室２４に充填される吸音材３４で囲まれる部分には、複数の第１の小孔３５，３６がそれぞれ穿設される。また第１隔壁１７には、前記一対の共鳴室２５，２６間を相互に連通させる複数の連通孔３７が穿設され、前記第２隔壁１８には、前記他方の共鳴室２６を前記吸音室２４に通じさせる複数の第２の小孔３８が穿設される。 A plurality of first small holes 35 and 36 are formed in portions of the first and second outlet pipes 15 and 16 surrounded by the sound absorbing material 34 filled in the sound absorbing chamber 24, respectively. The first partition 17 is provided with a plurality of communication holes 37 for allowing the pair of resonance chambers 25 and 26 to communicate with each other, and the second partition 18 is provided with the other resonance chamber 26 through the sound absorbing chamber. A plurality of second small holes 38 communicating with 24 are formed.

前記第１シェル半体１２の底壁１２ａならびに前記第２シェル半体１３の天井壁１３ａには、前記第１鍔部１７ｂを配置するようにして直線状に延びる第１配置溝３９を前記底壁１２ａおよび前記天井壁１３ａの内面にそれぞれ形成するようにして外方に突出する一対ずつ二組の第１突部４０がそれぞれ突設され、前記シェル１１のうち前記第１隔壁１７に対応する部分の複数箇所に形成されるスリット（図示せず）を埋めるようにした複数の溶接部４１で前記第１鍔部１７ｂが前記シェル１１に接合される。 On the bottom wall 12a of the first shell half 12 and on the ceiling wall 13a of the second shell half 13, a first arrangement groove 39 extending linearly so as to arrange the first flange portion 17b is formed on the bottom wall 12a. Two sets of first protrusions 40 are formed on the inner surfaces of the wall 12a and the ceiling wall 13a, and each of the first protrusions 40 protrudes outward, respectively, and corresponds to the first partition 17 of the shell 11. The first flange portion 17b is joined to the shell 11 by a plurality of welds 41 which fill slits (not shown) formed at a plurality of portions of the portion.

また前記第１シェル半体１２の底壁１２ａと、前記第２シェル半体１３の天井壁１３ａにおける低位部１３ａａとには、前記第２鍔部１８ｂを配置するようにして直線状に延びる第２配置溝４２を前記底壁１２ａおよび前記低位部１３ａａの内面にそれぞれ形成するようにして外方に突出する一対ずつ二組の第２突部４３がそれぞれ突設され、前記シェル１１のうち前記第２隔壁１８に対応する部分の複数箇所に形成されるスリット（図示せず）を埋めるようにした複数の溶接部４４で前記第２鍔部１８ｂが前記シェル１１に接合される。 In addition, the bottom wall 12a of the first shell half 12 and the lower portion 13aa of the ceiling wall 13a of the second shell half 13 extend linearly so as to arrange the second flange 18b. Two sets of second protrusions 43 project outward so as to form two arrangement grooves 42 on the inner surfaces of the bottom wall 12a and the lower portion 13aa, respectively. The second flange portion 18b is joined to the shell 11 by a plurality of welded portions 44 that fill in slits (not shown) formed at a plurality of portions corresponding to the second partition wall 18.

次にこの実施の形態の作用について説明すると、第１および第２シェル半体１２，１３が相互に結合されて成るシェル１１内に、インレットパイプ１４が挿通される第１隔壁１７と、前記インレットパイプ１４とはガス流通方向を異ならせた第１および第２のアウトレットパイプ１５，１６が挿通される第２隔壁１８とが設けられるのであるが、前記第１隔壁１７および前記第２隔壁１８の一方である第１隔壁１７の外周の一部に、前記第１隔壁１７および前記第２隔壁１８の他方である第２隔壁１８が有する平面部２２に当接するようにして直線状に延びる当接部２１が設けられ、前記第１隔壁１７の外周のうち前記当接部２１を除く残余の部分と、前記第２隔壁１８の外周とが、前記シェル１１の内面に接合されるので、組み付け時に、第１および第２隔壁１７，１８はシェル１１の内面で支持されるとともに第１および第２隔壁１７，１８の相互当接部で支持されることになり、シェル１１内での第１および第２隔壁１７，１８の位置決めが容易となり、それにより消音器の製造を容易としてコスト低減を図ることができる。また第１および第２隔壁１７，１８の剛性を高め、それらの隔壁の振動を抑制することができる。 Next, the operation of this embodiment will be described. A first partition wall 17 into which an inlet pipe 14 is inserted is inserted into a shell 11 formed by connecting first and second shell halves 12 and 13 to each other. The pipe 14 is provided with a second partition 18 through which first and second outlet pipes 15 and 16 having different gas flow directions are inserted, and the first partition 17 and the second partition 18 are provided. One part of the outer periphery of the first partition 17 which is one of the first partitions 17 and the second partition 18, which is the other of the second partitions 18, is in contact with the flat portion 22 of the second partition 18 and extends linearly. A portion 21 is provided, and the remaining portion of the outer periphery of the first partition 17 other than the abutting portion 21 and the outer periphery of the second partition 18 are joined to the inner surface of the shell 11. , The first and second partitions 17 and 18 are supported by the inner surface of the shell 11 and are supported by the mutual abutting portions of the first and second partitions 17 and 18, so that the first and second partitions in the shell 11 are provided. The positioning of the partitions 17 and 18 is facilitated, whereby the production of the silencer is facilitated and the cost can be reduced. In addition, the rigidity of the first and second partition walls 17 and 18 can be increased, and the vibration of those partition walls can be suppressed.

また前記シェル１１内に、前記第１隔壁１７および前記第２隔壁１８の他方である第２隔壁１８と前記シェル１１とで規定される吸音室２４が形成され、前記第１および第２のアウトレットパイプ１５，１６のうち前記吸音室２４に充填される吸音材３４で囲まれる部分に、複数の第１の小孔３５，３６が穿設されるので、ガスの出口付近で高周波の音を効果的に低減することができる。 In the shell 11, a sound absorbing chamber 24 defined by the shell 11 and the second partition 18, which is the other of the first partition 17 and the second partition 18, is formed, and the first and second outlets are formed. Since a plurality of first small holes 35 and 36 are formed in the pipes 15 and 16 at a portion surrounded by the sound absorbing material 34 filled in the sound absorbing chamber 24, high-frequency sound is produced near the gas outlet. Can be effectively reduced.

また前記第１隔壁１７および前記第２隔壁１８が直交して配置され、前記インレットパイプ１４の少なくとも前記第１隔壁１７に挿通される部分が前記第１隔壁１７に直交して配置され、前記第１および第２のアウトレットパイプ１５，１６の少なくとも前記第２隔壁１８に挿通される部分が前記第２隔壁１８に直交して配置されるので、インレットパイプ１４と、第１および第２のアウトレットパイプ１５，１６とをほぼ直管状としても、ガスの出入り方向をほぼ９０度変化させることができ、消音器の配置上の自由度が増大する。 Further, the first partition wall 17 and the second partition wall 18 are arranged orthogonally, and at least a portion of the inlet pipe 14 inserted into the first partition wall 17 is arranged orthogonally to the first partition wall 17. Since at least a portion of the first and second outlet pipes 15 and 16 inserted into the second partition 18 is arranged orthogonal to the second partition 18, the inlet pipe 14 and the first and second outlet pipes are provided. Even if the pipes 15 and 16 are substantially straight pipes, the direction in which gas enters and exits can be changed by about 90 degrees, and the degree of freedom in arrangement of the muffler increases.

さらに前記第１シェル半体１２が平面状の底壁１２ａを有しつつ上方に開いた椀状に形成され、第２シェル半体１３が前記底壁１２ａに対向する天井壁１３ａを有しつつ下方に開いた椀状に形成され、前記天井壁１３ａが、前記底壁１２ａとの間隔を前記天井壁１３ａの他の部分よりも小さくした低位部１３ａａと、その低位部１３ａａよりも前記底壁１２ａとの間隔を大きくした高位部１３ａｂと、低位部１３ａａ側に向かうにつれて前記底壁１２ａに近付くように湾曲して前記低位部１３ａａおよび前記高位部１３ａｂ間を結ぶ連結部１３ａｃとを有するように形成され、前記平面部２２を有する前記第２隔壁１８の外周が、前記天井壁１３ａの前記低位部１３ａａおよび前記底壁１２ａに当接するようにして前記第１および第２シェル半体１２，１３に接合され、前記第２隔壁１８の前記平面部２２に前記第１隔壁１７の外周の一部に設けられる当接部２１が当接され、前記シェル１１内に、前記第２隔壁１８を前記吸音室２４との間に介在させるとともに第１隔壁１７の両側に配置される一対の共鳴室２５，２６が形成されるので、第１および第２シェル半体１２，１３の結合方向での第２隔壁１８の位置決め性を高くすることができる。 Further, the first shell half 12 is formed in a bowl shape opened upward with a flat bottom wall 12a, and the second shell half 13 has a ceiling wall 13a facing the bottom wall 12a. A lower portion 13aa formed in a bowl shape opened downward, the ceiling wall 13a having a smaller distance from the bottom wall 12a than other portions of the ceiling wall 13a, and the lower wall 13aa being lower than the lower portion 13aa. The upper portion 13ab having a larger distance from the lower portion 12a, and a connecting portion 13ac that curves so as to approach the bottom wall 12a toward the lower portion 13aa and connects the lower portion 13aa and the higher portion 13ab. The first and second shells are formed such that the outer periphery of the second partition wall 18 having the flat portion 22 is in contact with the lower portion 13aa and the bottom wall 12a of the ceiling wall 13a. The contact portion 21 provided on a part of the outer periphery of the first partition 17 is in contact with the flat portion 22 of the second partition 18, and the second portion 18 is provided in the shell 11. Since the partition 18 is interposed between the sound absorbing chamber 24 and the pair of resonance chambers 25 and 26 arranged on both sides of the first partition 17, the first and second shell halves 12 and 13 are connected. The positioning of the second partition 18 in the direction can be enhanced.

以上、本発明の実施の形態について説明したが、本発明は上記実施の形態に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行うことが可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

たとえば上述の実施の形態では、第１および第２のアウトレットパイプ１５，１６が用いられる場合について説明したが、アウトレットパイプが１本である場合にも本発明を適用することができる。 For example, in the above-described embodiment, the case where the first and second outlet pipes 15 and 16 are used has been described. However, the present invention can be applied to a case where only one outlet pipe is used.

１１・・・シェル
１２・・・第１シェル半体
１２ａ・・・底壁
１３・・・第２シェル半体
１３ａ・・・天井壁
１３ａａ・・・低位部
１３ａｂ・・・高位部
１３ａｃ・・・連結部
１４・・・インレットパイプ
１５，１６・・・アウトレットパイプ
１７・・・第１隔壁
１８・・・第２隔壁
２１・・・当接部
２２・・・平面部
２４・・・吸音室
２５，２６・・・共鳴室
３４・・・吸音材
３５，３６・・・小孔
11 Shell 12 First shell half 12a Bottom wall 13 Second shell half 13a Ceiling wall 13aa Low portion 13ab High portion 13ac · Connecting part 14 ··· Inlet pipes 15 and 16 ··· Outlet pipe 17 ··· First partition 18 ··· Second partition 21 ··· Contact part 22 ··· Plane part 24 ··· Sound absorbing chamber 25, 26 ... resonance chamber 34 ... sound absorbing material 35, 36 ... small hole

Claims

第１および第２シェル半体（１２，１３）が相互に結合されて成るシェル（１１）内に、インレットパイプ（１４）が挿通される第１隔壁（１７）と、前記インレットパイプ（１４）とはガス流通方向を異ならせたアウトレットパイプ（１５，１６）が挿通される第２隔壁（１８）とが設けられる消音器において、
前記第１隔壁（１７）および前記第２隔壁（１８）の一方の外周の一部に、前記第１隔壁（１７）および前記第２隔壁（１８）の他方が有する平面部（２２）に当接するようにして直線状に延びる当接部（２１）が設けられ、前記第１隔壁（１７）および前記第２隔壁（１８）の前記一方の外周のうち前記当接部（２１）を除く残余の部分と、前記第１隔壁（１７）および前記第２隔壁（１８）の前記他方の外周とが、前記シェル（１１）の内面に接合され、
前記シェル（１１）内に、前記第１隔壁（１７）および前記第２隔壁（１８）の他方と前記シェル（１１）とで規定される吸音室（２４）が形成され、前記アウトレットパイプ（１５，１６）のうち前記吸音室（２４）に充填される吸音材（３４）で囲まれる部分に、複数の小孔（３５，３６）が穿設されることを特徴とする消音器。 A first partition wall (17) into which an inlet pipe (14) is inserted and a first partition wall (17) into which a first and second shell halves (12, 13) are connected to each other; And a second partition wall (18) into which outlet pipes (15, 16) having different gas flow directions are inserted.
One part of the outer periphery of one of the first partition (17) and the second partition (18) is in contact with a flat portion (22) of the other of the first partition (17) and the second partition (18). A contact portion (21) extending linearly so as to be in contact with the first partition wall (17) and a remaining portion of the outer periphery of the one of the first partition wall (17) and the second partition wall (18) except for the contact portion (21) is provided. And the other outer periphery of the first partition (17) and the second partition (18) are joined to the inner surface of the shell (11) ,
In the shell (11), a sound absorbing chamber (24) defined by the other of the first partition (17) and the second partition (18) and the shell (11) is formed, and the outlet pipe (15) is formed. , the portion surrounded by sound absorbing material is filled (34) to said acoustic chamber (24) out of 16), the silencer characterized by Rukoto plurality of small holes (35, 36) is bored.

前記第１シェル半体（１２）が平面状の底壁（１２ａ）を有しつつ上方に開いた椀状に形成され、第２シェル半体（１３）が前記底壁（１２ａ）に対向する天井壁（１３ａ）を有しつつ下方に開いた椀状に形成され、前記天井壁（１３ａ）が、前記底壁（１２ａ）との間隔を前記天井壁（１３ａ）の他の部分よりも小さくした低位部（１３ａａ）と、その低位部（１３ａａ）よりも前記底壁（１２ａ）との間隔を大きくした高位部（１３ａｂ）と、前記低位部（１３ａａ）側に向かうにつれて前記底壁（１２ａ）に近付くように湾曲して前記低位部（１３ａａ）および前記高位部（１３ａｂ）間を結ぶ連結部（１３ａｃ）とを有するように形成され、前記平面部（２２）を有する前記第２隔壁（１８）の外周が、前記天井壁（１３ａ）の前記低位部（１３ａａ）および前記底壁（１２ａ）に当接するようにして前記第１および第２シェル半体（１２，１３）に接合され、前記第２隔壁（１８）の前記平面部（２２）に前記第１隔壁（１７）の外周の一部に設けられる当接部（２１）が当接され、前記シェル内（１１）に、前記第２隔壁（１８）を前記吸音室（２４）との間に介在させるとともに第１隔壁（１７）の両側に配置される一対の共鳴室（２５，２６）が形成されることを特徴とする請求項１に記載の消音器。 The first shell half (12) has a flat bottom wall (12a) and is formed in a bowl shape opened upward, and the second shell half (13) faces the bottom wall (12a). The ceiling wall (13a) is formed in a bowl shape that opens downward while having a ceiling wall (13a), and the space between the ceiling wall (13a) and the bottom wall (12a) is smaller than that of other parts of the ceiling wall (13a). A lower portion (13aa), a higher portion (13ab) in which the distance between the bottom wall (12a) is larger than the lower portion (13aa), and the bottom wall (12aa) toward the lower portion (13aa). ), The second partition wall (13ac) is formed to have a connecting portion (13ac) that curves between the lower portion (13aa) and the higher portion (13ab) and that has the flat portion (22). 18) is the outer periphery of the ceiling wall (13a). The first and second shell halves (12, 13) are joined so as to be in contact with the base portion (13aa) and the bottom wall (12a), and the flat portion (22) of the second partition wall (18). A contact portion (21) provided on a part of the outer periphery of the first partition (17) is in contact with the first partition (17), and the second partition (18) is connected to the sound absorbing chamber (24) in the shell (11). 2. The muffler according to claim 1, wherein a pair of resonance chambers (25, 26) interposed therebetween and arranged on both sides of the first partition (17) are formed.

第１および第２シェル半体（１２，１３）が相互に結合されて成るシェル（１１）内に、インレットパイプ（１４）が挿通される第１隔壁（１７）と、前記インレットパイプ（１４）とはガス流通方向を異ならせたアウトレットパイプ（１５，１６）が挿通される第２隔壁（１８）とが設けられる消音器において、A first partition wall (17) into which an inlet pipe (14) is inserted and a first partition wall (17) into which a first and second shell halves (12, 13) are connected to each other; And a second partition (18) through which outlet pipes (15, 16) having different gas flow directions are inserted,
前記第１隔壁（１７）の外周の一部に、前記第２隔壁（１８）が有する平面部（２２）に当接するようにして直線状に延びる当接部（２１）が設けられ、前記第１隔壁（１７）の外周のうち前記当接部（２１）を除く残余の部分と、前記第２隔壁（１８）の外周とが、前記シェル（１１）の内面に接合され、A contact portion (21) extending linearly so as to contact a flat portion (22) of the second partition (18) is provided on a part of the outer periphery of the first partition (17). The remaining portion of the outer periphery of the first partition (17) except for the contact portion (21) and the outer periphery of the second partition (18) are joined to the inner surface of the shell (11),
前記第１シェル半体（１２）が平面状の底壁（１２ａ）を有しつつ上方に開いた椀状に形成され、第２シェル半体（１３）が前記底壁（１２ａ）に対向する天井壁（１３ａ）を有しつつ下方に開いた椀状に形成され、前記天井壁（１３ａ）が、前記底壁（１２ａ）との間隔を前記天井壁（１３ａ）の他の部分よりも小さくした低位部（１３ａａ）と、その低位部（１３ａａ）よりも前記底壁（１２ａ）との間隔を大きくした高位部（１３ａｂ）と、前記低位部（１３ａａ）側に向かうにつれて前記底壁（１２ａ）に近付くように湾曲して前記低位部（１３ａａ）および前記高位部（１３ａｂ）間を結ぶ連結部（１３ａｃ）とを有するように形成され、前記第２隔壁（１８）の外周が、前記天井壁（１３ａ）の前記低位部（１３ａａ）および前記底壁（１２ａ）に当接するようにして前記第１および第２シェル半体（１２，１３）に接合され、前記第２隔壁（１８）の前記平面部（２２）に前記第１隔壁（１７）の外周の一部に設けられる当接部（２１）が当接され、前記シェル内（１１）に、前記第２隔壁（１８）を前記吸音室（２４）との間に介在させるとともに第１隔壁（１７）の両側に配置される一対の共鳴室（２５，２６）が形成されることを特徴とする消音器。The first shell half (12) has a flat bottom wall (12a) and is formed in a bowl shape opened upward, and the second shell half (13) faces the bottom wall (12a). The ceiling wall (13a) is formed in a bowl shape that opens downward while having a ceiling wall (13a), and the space between the ceiling wall (13a) and the bottom wall (12a) is smaller than that of other parts of the ceiling wall (13a). A lower portion (13aa), a higher portion (13ab) in which a distance between the lower portion (13aa) and the bottom wall (12a) is larger than the lower portion (13aa), and a lower portion (12aa) closer to the lower portion (13aa). ) Is formed so as to have a connecting portion (13ac) connecting between the lower portion (13aa) and the higher portion (13ab) by bending so as to approach the upper portion, and an outer periphery of the second partition wall (18) is provided on the ceiling. The lower part (13aa) and the front of the wall (13a) The first and second shell halves (12, 13) are joined so as to contact the bottom wall (12a), and the first partition (17) is attached to the flat portion (22) of the second partition (18). The contact portion (21) provided on a part of the outer periphery of the shell is in contact with the second partition (18) in the shell (11) between the second partition (18) and the sound absorbing chamber (24). A muffler characterized in that a pair of resonance chambers (25, 26) arranged on both sides of one partition (17) are formed.

前記第１隔壁（１７）および前記第２隔壁（１８）が直交して配置され、前記インレットパイプ（１４）の少なくとも前記第１隔壁（１７）に挿通される部分が前記第１隔壁（１７）に直交して配置され、前記アウトレットパイプ（１５，１６）の少なくとも前記第２隔壁（１８）に挿通される部分が前記第２隔壁（１８）に直交して配置されることを特徴とする請求項１〜３のいずれか１項に記載の消音器。 The first partition (17) and the second partition (18) are arranged orthogonally, and at least a portion of the inlet pipe (14) inserted into the first partition (17) is the first partition (17). And at least a portion of the outlet pipe (15, 16) inserted into the second partition (18) is disposed orthogonal to the second partition (18). Item 4. The muffler according to any one of Items 1 to 3 .