JP2005248842A - Muffler - Google Patents

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JP2005248842A
JP2005248842A JP2004060712A JP2004060712A JP2005248842A JP 2005248842 A JP2005248842 A JP 2005248842A JP 2004060712 A JP2004060712 A JP 2004060712A JP 2004060712 A JP2004060712 A JP 2004060712A JP 2005248842 A JP2005248842 A JP 2005248842A
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chamber
muffler
exhaust pipe
exhaust gas
opening
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JP4271601B2 (en
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Hidetaka Ito
藤 秀 隆 伊
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I THREE KK
Three Kk I
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I THREE KK
Three Kk I
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a muffler capable of preventing corrosion. <P>SOLUTION: The muffler M is provided with a muffler main body 1, an exhaust gas introduction pipe introducing exhaust gas into the muffler main body 1, an exhaust pipe 3 meandering in the muffler main body 1 and projecting out of the muffler main body 1 to lead exhaust gas introduced into the muffler main body to outside, a first and a second support member 4, 5 provided in the muffler main body 1 and supporting the exhaust pipe 3 in the muffler main body 1. The muffler main body 1 is divided into a first chamber X and a second chamber Y by the first support member 4, the second chamber Y is divided into a second' chamber Y<SB>1</SB>and a second " chamber Y<SB>2</SB>by a second support member 5, one end of openings of the exhaust pipe 3 is positioned in the first chamber X and the exhaust pipe 3 meandering in the muffler main body 1 is positioned in at least the second ' chamber Y<SB>1</SB>and the second " chamber Y<SB>2</SB>, the first chamber X, a plurality of opening parts 31 exist in the exhaust pipe 3 positioned in the second ' chamber Y<SB>1</SB>, and acoustic material 7 is provided to cover the plurality of opening parts 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、マフラ−に係り、特に、腐食の防止を図ることができるマフラ−に関する。     The present invention relates to a muffler, and more particularly to a muffler capable of preventing corrosion.

マフラ−においては、管路の中途に膨張室を設け、排気ガスが持っているエネルギ−を低減させて騒音の低下化を図っている（例えば、特許文献１参照、特許文献１の図１で言えば、第１拡張室15、第２拡張室16）。
特開平９−６０５１６号公報（図１） In the muffler, an expansion chamber is provided in the middle of the pipe to reduce the energy of exhaust gas (see, for example, Patent Document 1 and FIG. 1 of Patent Document 1). For example, the first expansion chamber 15 and the second expansion chamber 16).
Japanese Patent Laid-Open No. 9-60516 (FIG. 1)

排気ガスは、一般に触媒を介してマフラ−へ流入されるため、マフラ−へ流入される排気ガス中には、二酸化炭素、水等が含まれている。その結果、排気ガス中の水がマフラ−内の膨張室で拡散し、マフラ−内の膨張室には、水が溜り易く、溜った水はマフラ−の外へ排出されにくく、マフラ−の腐食を早めてしまうという問題点があった。
本発明は、上述した問題点を考慮してなされたもので、腐食の防止を図ることができるマフラ−を提供するものである。 Since exhaust gas generally flows into the muffler via a catalyst, the exhaust gas flowing into the muffler contains carbon dioxide, water, and the like. As a result, the water in the exhaust gas diffuses in the expansion chamber in the muffler, and the water easily accumulates in the expansion chamber in the muffler. There was a problem of speeding up.
The present invention has been made in view of the above-described problems, and provides a muffler capable of preventing corrosion.

上記目的を達成するために、請求項１記載のマフラ−は、マフラ−本体と、このマフラ−本体内に排気ガスを導入する排気ガス導入管と、前記マフラ−本体内に導入された排気ガスを外気へ導くように、前記マフラ−本体内 を蛇行すると共に、前記マフラ−本体の外へ突出した排気管と、前記マフラ−本体内に設けられ、前記排気管を前記マフラ−本体内で支持する第１、第２の支持部材と、前記マフラ−本体は前記第１の支持部材により第１の室と第２の室に仕切られ、前記第２の室は、前記第２の支持部材により第２’の室と第２”の室に仕切られ、前記排気管の開口の一端は前記第１の室に、前記排気管の開口の他端は外気にそれぞれ臨み、前記第２’の室は、前記マフラ−本体内の前記第１の支持部材と前記第２の支持部材 との間に設けられた室であり、前記マフラ−本体内を蛇行する前記排気管は、少なくとも、前記第２’の室、前記第２”の室、前記第１の室に位置し、前記第２’の室内に位置する前記排気管には、複数の開口部があり、前記複数の開口部を覆うように設けられた吸音材とを備えているものである。     In order to achieve the above object, a muffler according to claim 1 includes a muffler main body, an exhaust gas introduction pipe for introducing exhaust gas into the muffler main body, and an exhaust gas introduced into the muffler main body. Meandering in the muffler body so as to guide the air to the outside air, an exhaust pipe projecting out of the muffler body, and provided in the muffler body, and supporting the exhaust pipe in the muffler body The first and second support members and the muffler main body are partitioned into a first chamber and a second chamber by the first support member, and the second chamber is separated by the second support member. The second 'chamber is partitioned into a second' chamber and a second 'chamber, with one end of the exhaust pipe opening facing the first chamber and the other end of the exhaust pipe opening facing the outside air. Between the first support member and the second support member in the muffler body. The exhaust pipe meandering in the muffler body is located at least in the second 'chamber, the second "chamber, and the first chamber, and the second' The exhaust pipe located in the room has a plurality of openings and a sound absorbing material provided so as to cover the plurality of openings.

また、請求項２記載のマフラ−は、請求項１記載のマフラ−において、排気ガス導入管の開口の一端と排気管の開口の一端とが対向しているものである。     A muffler according to claim 2 is the muffler according to claim 1, wherein one end of the opening of the exhaust gas introduction pipe faces one end of the opening of the exhaust pipe.

また、請求項３記載のマフラ−は、請求項１記載のマフラ−において、排気ガス導入管の開口の一端と排気管の開口の一端とが接続されているものである。     A muffler according to claim 3 is the muffler according to claim 1, wherein one end of the opening of the exhaust gas introduction pipe is connected to one end of the opening of the exhaust pipe.

また、請求項４記載のマフラ−は、請求項１記載のマフラ−において、排気ガス導入管の開口の一端と排気管の開口の一端とが対向しないものであって、前記排気ガス導入管の開口の一端に対向すると共に、排気ガスを前記排気管の開口の一端へ導くガイドが設けられているものである。     Further, the muffler according to claim 4 is the muffler according to claim 1, wherein one end of the opening of the exhaust gas introduction pipe and one end of the opening of the exhaust pipe do not face each other. A guide is provided to face one end of the opening and guide exhaust gas to one end of the opening of the exhaust pipe.

また、請求項５記載のマフラ−は、一方の側に位置する一方のマフラ−本体と、この一方のマフラ−本体内に排気ガスを導入する一方の排気ガス導入管と、前記一方のマフラ−本体内に導入された排気ガスを外気へ導くように、前記一方のマフラ−本体内を蛇行すると共に、前記一方のマフラ−本体の外へ突出した一方の排気管と、前記一方のマフラ−本体内に設けられ、前記一方の排気管を前記一方のマフラ−本体内で支持する一方の第１、第２の支持部材と、前記一方のマフラ−本体は前記一方の第１の支持部材により一方の第１の室と一方の第２の室に仕切られ、前記一方の第２の室は、前記一方の第２の支持部材により一方の第２’の室と一方の第２”の室に仕切られ、前記一方の排気管の開口の一端は前記一方の第１の室に、前記一方の排気管の開口の他端は外気にそれぞれ臨み、前記一方の第２’の室は、前記一方のマフラ−本体内の前記一方の第１の支持部材と前記一方の第２の支持部材との間に設けられた室であり、前記一方のマフラ−本体内を蛇行する前記一方の排気管は、少なくとも、前記一方の第２’の室、前記一方の第２”の室、前記一方の第１の室に位置し、前記一方の第２’の室内に位置する前記一方の排気管には、複数の開口部があり、前記複数の開口部を覆うように設けられた一方の吸音材と、他方の側に位置する他方のマフラ−本体と、この他方のマフラ−本体内に排気ガスを導入する他方の排気ガス導入管と、前記他方のマフラ−本体内に導入された排気ガスを外気へ導くように、前記他方のマフラ−本体内を蛇行すると共に、前記他方のマフラ−本体の外へ突出した他方の排気管と、前記他方のマフラ−本体内に設けられ、前記他方の排気管を前記他方のマフラ−本体内で支持する他方の第１、第２の支持部材と、前記他方のマフラ−本体は前記他方の第１の支持部材により他方の第１の室と他方の第２の室に仕切られ、前記他方の第２の室は、前記他方の第２の支持部材により他方の第２’の室と他方の第２”の室に仕切られ、前記他方の排気管の開口の一端は前記他方の第１の室に、前記他方の排気管の開口の他端は外気にそれぞれ臨み、前記他方の第２’の室は、前記他方のマフラ−本体内の前記他方の第１の支持部材と前記他方の第２の支持部材との間に設けられた室であり、前記他方のマフラ−本体内を蛇行する前記他方の排気管は、少なくとも、前記他方の第２’の室、前記他方の第２”の室、前記他方の第１の室に位置し、前記他方の第２’の室内に位置する前記他方の排気管には、複数の開口部があり、前記複数の開口部を覆うように設けられた他方の吸音材と、前記一方の第１の室と前記他方の第１の室とを連通する通路を備えているものである。     According to a fifth aspect of the present invention, there is provided a muffler having one muffler body located on one side, one exhaust gas introduction pipe for introducing exhaust gas into the one muffler body, and the one muffler. One exhaust pipe projecting out of the one muffler main body and meandering in the one muffler main body to guide the exhaust gas introduced into the main body to the outside air, and the one muffler main body One of the first and second support members provided within the one muffler main body and the one muffler main body supported by the one first support member. The first chamber is divided into one second chamber, and the one second chamber is divided into one second 'chamber and one second "chamber by the one second support member. One end of the opening of the one exhaust pipe is partitioned into the one first chamber, The other end of the opening of the one exhaust pipe faces the outside air, and the one second 'chamber is the one first support member and the one second support member in the one muffler body. And the one exhaust pipe meandering in the one muffler body includes at least the one second 'chamber, the one second "chamber, the one The one exhaust pipe located in the first chamber and the one second 'chamber has a plurality of openings, and one sound absorbing member provided so as to cover the plurality of openings. Material, the other muffler body located on the other side, the other exhaust gas introduction pipe for introducing exhaust gas into the other muffler body, and the exhaust gas introduced into the other muffler body Meandering the other muffler main body so as to guide the air to the outside air, and The other exhaust pipe projecting out of the main body and the other first and second supports provided in the other muffler main body and supporting the other exhaust pipe within the other muffler main body. The member and the other muffler main body are partitioned by the other first support member into the other first chamber and the other second chamber, and the other second chamber is the other second chamber. The other 2 ′ chamber and the other 2 ″ chamber are partitioned by the supporting member, and one end of the opening of the other exhaust pipe is formed in the other first chamber and the opening of the other exhaust pipe is formed. The other end faces outside air, and the other second 'chamber is provided between the other first support member and the other second support member in the other muffler body. And the other exhaust pipe meandering in the other muffler main body is at least the other second 'chamber. The other exhaust pipe located in the other second "chamber and the other first chamber and located in the other second 'chamber has a plurality of openings, The other sound absorbing material provided so as to cover the opening, and a passage communicating the one first chamber and the other first chamber are provided.

請求項１記載のマフラ−によれば、第２”の室、第１の室に位置する排気管は、閉じているため、排気管より第２”の室、第１の室へ排気ガスが漏れることがなく、排気管内に排気ガス中の水がたまりにくく、排気ガス中の水によるマフラ−の腐食を防止することができる。     According to the muffler of the first aspect, since the exhaust pipe located in the second "chamber and the first chamber is closed, the exhaust gas flows from the exhaust pipe to the second" chamber and the first chamber. There is no leakage, water in the exhaust gas hardly accumulates in the exhaust pipe, and muffler corrosion due to water in the exhaust gas can be prevented.

請求項２記載のマフラ−によれば、前述した請求項１記載の発明の効果に加え、排気ガス導入管の排気ガスがマフラ−本体の内壁に直接当たるのを防ぎ、マフラ−本体の内壁の劣化を防いで、排気ガス導入管の開口の一端と排気管の開口の一端とが対向しているため、排気ガス導入管の排気ガスを排気管にスム−ズに導くことができる。     According to the muffler according to claim 2, in addition to the effect of the invention according to claim 1, the exhaust gas of the exhaust gas introduction pipe is prevented from directly hitting the inner wall of the muffler main body, and the inner wall of the muffler main body is prevented. Deterioration is prevented, and one end of the opening of the exhaust gas introduction pipe faces one end of the opening of the exhaust pipe, so that the exhaust gas of the exhaust gas introduction pipe can be smoothly guided to the exhaust pipe.

請求項４記載のマフラ−によれば、前述した請求項１記載の発明の効果に加え、排気ガス導入管の開口の一端と排気管の開口の一端とが対向しない構造にあって、排気ガス導入管の一端に対向すると共に、排気ガスを前記排気管の開口の一端へ導くガイドが設けられているため、排気ガス導入管の排気ガスがマフラ−本体の内壁に直接当たるのを防ぎ、マフラ−本体の内壁の劣化を防いで、排気ガス導入管の排気ガスを排気管にスム−ズに導くことができる。     According to the muffler of the fourth aspect, in addition to the effect of the invention of the first aspect described above, the exhaust gas introduction pipe has one end of the opening that does not oppose one end of the exhaust pipe. A guide is provided to oppose one end of the introduction pipe and guide the exhaust gas to one end of the opening of the exhaust pipe, so that the exhaust gas of the exhaust gas introduction pipe is prevented from directly hitting the inner wall of the muffler body. -The deterioration of the inner wall of the main body can be prevented, and the exhaust gas from the exhaust gas introduction pipe can be smoothly guided to the exhaust pipe.

請求項５記載のマフラ−によれば、前述した請求項１記載の発明の効果に加え、一方の第１の室と他方の第１の室とを連通する通路を備えているため、連通する通路を介して、排気ガスが衝突し（干渉し）、消音効果を得ることができると共に、連通する通路に排気ガスをためることができ、トルクの増大を図ることができる。     According to the muffler according to the fifth aspect, in addition to the effect of the invention according to the first aspect, the muffler includes the passage that communicates one first chamber and the other first chamber. Exhaust gas collides (interferes) through the passage, so that a silencing effect can be obtained, and exhaust gas can be accumulated in the communicating passage, so that torque can be increased.

本発明の一実施例のマフラ−を図面を参照して説明する。
図１乃至図３において、Ｍは、エンジンから吐き出される排気ガスの騒音を低減して大気中に放出するマフラ−で、マフラ−Ｍは、一対のマフラ−本体１、１’を有している。１は一方の側に位置する一方のマフラ−本体で、１’は他方の側に位置する他方のマフラ−本体で、一方のマフラ−本体１と他方のマフラ−本体１’は左右対称に設けられている。２は一方のマフラ−本体１内に排気ガスを導入する一方の排気ガス導入管で、２’は他方のマフラ−本体１内に排気ガスを導入する他方の排気ガス導入管で、一方の排気ガス導入管２と他方の排気ガス導入管２’は、排気ガス導入管Ｐの中途より分岐している。 A muffler according to an embodiment of the present invention will be described with reference to the drawings.
1 to 3, M is a muffler that reduces the noise of exhaust gas discharged from the engine and releases it to the atmosphere. The muffler M has a pair of muffler bodies 1 and 1 '. . 1 is one muffler body located on one side, 1 'is the other muffler body located on the other side, and one muffler body 1 and the other muffler body 1' are provided symmetrically. It has been. Reference numeral 2 denotes one exhaust gas introduction pipe for introducing exhaust gas into one muffler main body 1, and 2 ′ denotes the other exhaust gas introduction pipe for introducing exhaust gas into the other muffler main body 1. The gas introduction pipe 2 and the other exhaust gas introduction pipe 2 ′ are branched from the middle of the exhaust gas introduction pipe P.

３は一方の排気管で、一方の排気管３は、一方のマフラ−本体１内に導入された排気ガスを外気へ導くように、一方のマフラ−本体１内を蛇行すると共に、一方のマフラ−本体１の外へ突出する構成となっている。
また、４、５は一方の第１、第２の支持部材で、一方の第１、第２の支持部材４、５は、一方のマフラ−本体１内に一方のマフラ−本体１内を横断するように設けられ、一方の排気管３を一方のマフラ−本体１内で支持するようになっている。
一方の排気管３の排気流れは、上流から下流に向かって、符号Ａ、Ｂ、Ｃ、Ｄ、Ｅ、Ｆ、Ｇ、Ｈ、Ｉの順となっている。
そして、一方のマフラ−本体１は一方の第１の支持部材４により一方の第１の室Ｘと一方の第２の室Ｙに仕切られ、一方の第２の室Ｙは、一方の第２の支持部材５により一方の第２’の室Ｙ1 と一方の第２”の室Ｙ2 に仕切られ、一方の排気管３の開口の一端Ａは一方の第１の室Ｘに、一方の排気管３の開口の他端Ｉは外気にそれぞれ臨むようになっている。 Reference numeral 3 denotes one exhaust pipe, and the one exhaust pipe 3 meanders in one muffler main body 1 so as to guide the exhaust gas introduced into one muffler main body 1 to the outside air, and one muffler -It is the structure which protrudes out of the main body 1.
Reference numerals 4 and 5 denote one first and second support members. One first and second support members 4 and 5 traverse one muffler body 1 and one muffler body 1. And one exhaust pipe 3 is supported in one muffler body 1.
The exhaust flow of one exhaust pipe 3 is in the order of reference signs A, B, C, D, E, F, G, H, and I from upstream to downstream.
One muffler main body 1 is partitioned into one first chamber X and one second chamber Y by one first support member 4, and one second chamber Y is one second chamber Y. The support member 5 is divided into one second 'chamber Y 1 and one second "chamber Y 2 , and one end A of the opening of one exhaust pipe 3 is connected to one first chamber X. The other end I of the opening of the exhaust pipe 3 faces the outside air.

６はガイドで、ガイド６は排気ガス導入管２の開口の一端に対向すると共に、排気ガス導入管２からの排気ガスを排気管３の開口の一端Ａへ導くように第１の支持部材４に設けられている。なお、一方の第１の室Ｘにおいて、排気ガス導入管２の開口の一端と排気管３の開口の一端Ａとは対向しない構成となっているため、ガイド６がなければ、排気ガス導入管２の排気ガスがマフラ−本体１の内壁に直接当たり、マフラ−本体１の内壁が劣化すると共に、排気ガス導入管２の排気ガスを排気管３にスム−ズに導くことができない。しかしながら、本実施例では、排気ガス導入管２の開口の一端と排気管３の開口の一端Ａとが対向しない構造にあって、排気ガス導入管２の一端に対向すると共に、排気ガスを排気管３の開口の一端Ａへ導くガイド６が設けられているため、排気ガス導入管２の排気ガスがマフラ−本体１の内壁に直接当たるのを防ぎ、マフラ−本体１の内壁の劣化を防いで、排気ガス導入管２の排気ガスを排気管３にスム−ズに導くことができるようになっている。     Reference numeral 6 denotes a guide, and the guide 6 opposes one end of the opening of the exhaust gas introduction pipe 2 and the first support member 4 so as to guide the exhaust gas from the exhaust gas introduction pipe 2 to one end A of the opening of the exhaust pipe 3. Is provided. In the first chamber X, since one end of the opening of the exhaust gas introduction pipe 2 and one end A of the opening of the exhaust pipe 3 are not opposed to each other, if there is no guide 6, the exhaust gas introduction pipe The exhaust gas 2 directly hits the inner wall of the muffler body 1, the inner wall of the muffler body 1 deteriorates, and the exhaust gas from the exhaust gas introduction pipe 2 cannot be smoothly guided to the exhaust pipe 3. However, in the present embodiment, the one end of the opening of the exhaust gas introduction pipe 2 and the one end A of the opening of the exhaust pipe 3 are not opposed to each other, the one end of the exhaust gas introduction pipe 2 is opposed, and the exhaust gas is exhausted. Since the guide 6 leading to one end A of the opening of the pipe 3 is provided, the exhaust gas of the exhaust gas introduction pipe 2 is prevented from directly hitting the inner wall of the muffler body 1 and the deterioration of the inner wall of the muffler body 1 is prevented. Thus, the exhaust gas from the exhaust gas introduction pipe 2 can be smoothly guided to the exhaust pipe 3.

また、一方の第２’の室Ｙ1 は、一方のマフラ−本体１内の一方の第１の支持部材４と一方の第２の支持部材５との間に設けられた室である。
なお、一方のマフラ−本体１内を蛇行する一方の排気管３は、少なくとも、一方の第２’の室Ｙ1 、一方の第２”の室Ｙ2 、一方の第１の室Ｘに位置するようになっている。 また、一方の第２’の室Ｙ2 内に位置する一方の排気管３には、複数の開口部31が設けられている。７は一方の吸音材で、一方の吸音材７は、耐熱性を有し、複数の開口部31を覆うように一方の第２’の室Ｙ2 内に設けられている。一方の吸音材７は、例えば、一方の排気管３の周囲にステンレスウ−ル71が、このステンレスウ−ル71の外に耐熱性のグラスウ−ル72が位置するようになっている。一方の排気管３のＣ、Ｆ、ＨからＩの部分には、開口部31は設けられておらず、また、一方の排気管３のＨからＩの部分は、外気に向かって一方の排気管３の通路が漸次拡大するようになっている。 One second ′ chamber Y 1 is a chamber provided between one first support member 4 and one second support member 5 in one muffler body 1.
One exhaust pipe 3 meandering in one muffler body 1 is located at least in one second 'chamber Y 1 , one second "chamber Y 2 , and one first chamber X. In addition, a plurality of openings 31 are provided in one exhaust pipe 3 located in one second ′ chamber Y 2 , 7 is one sound absorbing material, The sound absorbing material 7 has heat resistance and is provided in one second 'chamber Y 2 so as to cover the plurality of openings 31. The one sound absorbing material 7 is, for example, one exhaust pipe. The stainless steel wall 71 is located around the stainless steel wall 71, and the heat-resistant glass wall 72 is located outside the stainless steel wall 71. C, F, H to I of one exhaust pipe 3 In the portion, the opening 31 is not provided, and in the portion from H to I of the one exhaust pipe 3, the passage of the one exhaust pipe 3 gradually expands toward the outside air. It has become.

３’は他方の排気管で、他方の排気管３’は、一方の排気管３と同様に、他方のマフラ−本体１’内に導入された排気ガスを外気へ導くように、他方のマフラ−本体１’内を蛇行すると共に、他方のマフラ−本体１’の外へ突出する構成となっている。
また、４’、５’は他方の第１、第２の支持部材で、他方の第１、第２の支持部材４’、５’は、他方のマフラ−本体１’内に他方のマフラ−本体１’内を横断するように設けられ、他方の排気管３’を他方のマフラ−本体１’内で支持するようになっている。
他方の排気管３’の排気流れは、上流から下流に向かって、符号Ａ’、Ｂ’、Ｃ’、Ｄ’、Ｅ’、Ｆ’、Ｇ’、Ｈ’、Ｉ’の順となっている。
そして、他方のマフラ−本体１’は他方の第１の支持部材４’により他方の第１の室Ｘ’と他方の第２の室Ｙ’に仕切られ、他方の第２の室Ｙ’は、他方の第２の支持部材５’により他方の第２’の室Ｙ’1 と他方の第２”の室Ｙ’2 に仕切られ、他方の排気管３’の開口の一端Ａ’は他方の第１の室Ｘ’に、他方の排気管３’の開口の他端Ｉ’は外気にそれぞれ臨むようになっている。
６’はガイドで、ガイド６’は排気ガス導入管２’の開口の一端に対向すると共に、排気ガス導入管２’からの排気ガスを排気管３’の開口の一端Ａ’へ導くように他方の第１の支持部材４’に設けられている。
他方の第２’の室Ｙ’1 は、他方のマフラ−本体１’内の他方の第１の支持部材４’と他方の第２の支持部材５’との間に設けられた室である。
なお、他方のマフラ−本体１’内を蛇行する他方の排気管３’は、少なくとも、他方の第２’の室Ｙ’1 、一方の第２”の室Ｙ’2 、他方の第１の室Ｘ’に位置するようになっている。
また、他方の第２’の室Ｙ’2 内に位置する他方の排気管３’には、複数の開口部31’が設けられている。７’は他方の吸音材で、他方の吸音材７’は、耐熱性を有し、複数の開口部31を覆うように一方の第２’の室Ｙ2 内に設けられている。他方の吸音材７’は、例えば、他方の排気管３の周囲にステンレスウ−ル（図示せず）が、このステンレスウ−ル（図示せず）の外に耐熱性のグラスウ−ル（図示せず）が位置するようになっている。
他方の排気管３’のＣ’、Ｆ’、Ｈ’からＩ’の部分には、開口部31’は設けられておらず、他方の排気管３’のＨ’からＩ’の部分は、外気に向かって他方の排気管３’の通路が漸次拡大するようになっている。
なお、一方のマフラ−本体１と他方のマフラ−本体１’とは、排気ガス導入管Ｐの中途より分岐した一方の排気ガス導入管２と他方の排気ガス導入管２’、通路８で接続されている。通路８は、一方の第１の室Ｘと他方の第１の室Ｘ’とを連通するものである。 3 ′ is the other exhaust pipe, and the other exhaust pipe 3 ′ is, like the one exhaust pipe 3, the other muffler so as to guide the exhaust gas introduced into the other muffler main body 1 ′ to the outside air. The main body 1 'meanders and the other muffler main body 1' protrudes outside.
4 'and 5' are the other first and second support members, and the other first and second support members 4 'and 5' are arranged in the other muffler body 1 '. It is provided so as to traverse the inside of the main body 1 ′, and the other exhaust pipe 3 ′ is supported in the other muffler main body 1 ′.
The exhaust flow of the other exhaust pipe 3 ′ is in the order of signs A ′, B ′, C ′, D ′, E ′, F ′, G ′, H ′, and I ′ from upstream to downstream. Yes.
The other muffler body 1 'is partitioned into the other first chamber X' and the other second chamber Y 'by the other first support member 4', and the other second chamber Y ' , 'the other second' while the second supporting member 5 is partitioned into 2 'chamber Y 1 and the other second "' chamber Y, and the other 'end a of the opening of the' other exhaust pipe 3 The other end I ′ of the opening of the other exhaust pipe 3 ′ faces outside air in the first chamber X ′.
6 'is a guide, and the guide 6' is opposed to one end of the opening of the exhaust gas introduction pipe 2 'and guides the exhaust gas from the exhaust gas introduction pipe 2' to one end A 'of the opening of the exhaust pipe 3'. The other first support member 4 ′ is provided.
The other second ′ chamber Y ′ 1 is a chamber provided between the other first support member 4 ′ and the other second support member 5 ′ in the other muffler body 1 ′. .
The other exhaust pipe 3 ′ meandering in the other muffler body 1 ′ includes at least the other second ′ chamber Y ′ 1 , one second ”chamber Y ′ 2 , and the other first exhaust chamber 3 ′. It is located in chamber X ′.
In addition, a plurality of openings 31 ′ are provided in the other exhaust pipe 3 ′ located in the other second ′ chamber Y ′ 2 . Reference numeral 7 ′ denotes the other sound absorbing material, and the other sound absorbing material 7 ′ has heat resistance and is provided in one second ′ chamber Y 2 so as to cover the plurality of openings 31. The other sound-absorbing material 7 ′ includes, for example, a stainless steel wall (not shown) around the other exhaust pipe 3, and a heat-resistant glass wool (not shown) outside the stainless steel wall (not shown). (Not shown) is located.
The opening 31 'is not provided in the C', F ', H' to I 'portion of the other exhaust pipe 3', and the H 'to I' portion of the other exhaust pipe 3 'is The passage of the other exhaust pipe 3 'gradually expands toward the outside air.
One muffler main body 1 and the other muffler main body 1 ′ are connected by one exhaust gas introduction pipe 2 branched from the middle of the exhaust gas introduction pipe P, the other exhaust gas introduction pipe 2 ′, and a passage 8. Has been. The passage 8 communicates one first chamber X and the other first chamber X ′.

従って、排気ガス導入管Ｐの中途より分岐した一方の排気ガス導入管２と他方の排気ガス導入管２’より、一方のマフラ−本体１内の一方の第１の室Ｘと他方のマフラ−本体１’内の他方の第１の室Ｘ’に排気ガスが導かれ、一方の第１の室Ｘ、他方の第１の室Ｘ’は膨張室となっているため、排気ガスが持っているエネルギ−が低減して騒音の低下が図れる。
また、一方の第１の室Ｘと他方の第１の室Ｘ’とを連通する通路８を介して、排気ガスが衝突し（干渉し）、消音効果を得ることができると共に、連通する通路８に排気ガスをためることができ、トルクの増大を図ることができる。
また、一方の第１の室Ｘに流入した排気ガス（他方の第１の室Ｘ’に流入した排気ガスの流れについては、一方の第１の室Ｘに流入した排気ガスと作用効果が同様であるため、その説明を省略する。）はガイド６に当たり、当たった排気ガスの一部は開口の一端Ａから排気管３内に導かれる。排気管３内に導かれた排気ガスは、開口部31から音波のエネルギ−は一方の吸音材７に吸収されながら、一方の排気管３のＡ、Ｂ、Ｃ、Ｄ、Ｅ、Ｆ、Ｇ、Ｈ、Ｉの順に進んでいく。
そして、一方の排気管３の第２”の室Ｙ2 、第１の室Ｘに位置する排気管３（Ｃ、Ｆ、Ｈ）は、開口部31を有せず閉じているため、排気管３より第２”の室Ｙ2 、第１の室Ｘへ排気ガスが漏れることがなく、排気管３内に排気ガス中の水がたまりにくく、排気ガス中の水によるマフラ−の腐食を防止することができる。 Therefore, one exhaust gas introduction pipe 2 branched from the middle of the exhaust gas introduction pipe P and the other exhaust gas introduction pipe 2 ', one first chamber X in one muffler body 1 and the other muffler. The exhaust gas is guided to the other first chamber X ′ in the main body 1 ′, and the first chamber X and the other first chamber X ′ are expansion chambers. The energy that is present can be reduced and noise can be reduced.
Further, the exhaust gas collides (interferes) through the passage 8 that communicates one first chamber X and the other first chamber X ′, so that a silencing effect can be obtained, and the communicating passage Exhaust gas can be accumulated in 8, and torque can be increased.
Further, the exhaust gas flowing into one first chamber X (the exhaust gas flowing into the other first chamber X ′ has the same effect as the exhaust gas flowing into the first chamber X). Therefore, a description thereof will be omitted.) Hits the guide 6, and a part of the exhaust gas hit is guided into the exhaust pipe 3 from one end A of the opening. The exhaust gas guided into the exhaust pipe 3 is absorbed by the sound absorbing material 7 through the opening 31 while the sound absorbing material 7 absorbs the sound wave, and A, B, C, D, E, F, G of the one exhaust pipe 3. , H and I in this order.
Since the exhaust pipe 3 (C, F, H) located in the second ”chamber Y 2 and the first chamber X of the one exhaust pipe 3 is closed without the opening 31, the exhaust pipe The exhaust gas does not leak into the second "chamber Y 2 and the first chamber X from 3, the water in the exhaust gas does not collect easily in the exhaust pipe 3, and the muffler is prevented from being corroded by the water in the exhaust gas. can do.

なお、図４及び図５に示すように、一方の排気管３内の部位Ｆと一方の第１の室Ｘとを連通する通路Ｓ、他方の排気管３’内の部位Ｆ’と他方の第１の室Ｘ’とを連通する通路Ｓ’、をそれぞれ設け、ベンチュリ効果を利用して、一方の第１の室Ｘ、他方の第１の室Ｘ’内の水分を一方の排気管３、他方の排気管３’にそれぞれ導くようにしても良い。     As shown in FIGS. 4 and 5, the passage S that connects the portion F in one exhaust pipe 3 and one first chamber X, the portion F ′ in the other exhaust pipe 3 ′, and the other A passage S ′ that communicates with the first chamber X ′ is provided, and by utilizing the venturi effect, moisture in one of the first chamber X and the other first chamber X ′ is supplied to one exhaust pipe 3. Alternatively, each may be led to the other exhaust pipe 3 '.

また、上述した実施例においては、一方のマフラ−本体１と他方のマフラ−本体１’を左右対称に設けたマフラ−Ｍについて説明したが、本発明にあっては、これに限らず、マフラ−本体は単体でも良く、また、マフラ−本体が単体の場合、排気ガス導入管の開口の一端と排気管の開口の一端とが対向しないものでも良い。
下記に説明するマフラ−Ｍは、マフラ−本体が単体の場合であって、排気ガス導入管の開口の一端と排気管の開口の一端とが対向するものである。 In the embodiment described above, the muffler M in which one muffler main body 1 and the other muffler main body 1 'are provided symmetrically has been described. However, the present invention is not limited to this, and the muffler is not limited thereto. The main body may be a single body, and when the muffler main body is a single body, one end of the opening of the exhaust gas introduction pipe may not be opposite to one end of the opening of the exhaust pipe.
The muffler M described below is a case where the muffler main body is a single body, and one end of the opening of the exhaust gas introduction pipe faces one end of the opening of the exhaust pipe.

図６及び図７において、Ｍは、エンジンから吐き出される排気ガスの騒音を低減して大気中に放出するマフラ−で、マフラ−Ｍは、単体のマフラ−本体１を有している。
２はマフラ−本体１内に排気ガスを導入する排気ガス導入管で、排気ガス導入管２の開口の一端Ａと排気管３の開口の一端とが対向するようになっている。
この排気管３は、マフラ−本体１内に導入された排気ガスを外気へ導くように、マフラ−本体１内を蛇行すると共に、マフラ−本体１の外へ突出する構成となっている。
また、４、５は第１、第２の支持部材で、第１、第２の支持部材４、５は、マフラ−本体１内にマフラ−本体１内を横断するように設けられ、排気管３をマフラ−本体１内で支持するようになっている。
排気管３の排気流れは、上流から下流に向かって、符号Ａ、Ｂ、Ｃと流れ、符号Ｃの部位で、符号ＤとＥに分岐し、符号Ｈの部位で合流し、符号Ｉ、Ｊ、Ｋの順となっている。
そして、マフラ−本体１は第１の支持部材４により第１の室Ｘとの第２の室Ｙに仕切られ、第２の室Ｘは、第２の支持部材５により第２’の室Ｙ1 と第２”の室Ｙ2 に仕切られ、排気管３の開口の一端Ａは第１の室Ｘに、排気管３の開口の他端Ｋは外気にそれぞれ臨むようになっている。 6 and 7, M is a muffler that reduces the noise of exhaust gas discharged from the engine and releases it to the atmosphere. The muffler M has a single muffler body 1.
Reference numeral 2 denotes an exhaust gas introduction pipe for introducing exhaust gas into the muffler main body 1. One end A of the opening of the exhaust gas introduction pipe 2 and one end of the opening of the exhaust pipe 3 are opposed to each other.
The exhaust pipe 3 is configured to meander in the muffler main body 1 and project outside the muffler main body 1 so as to guide the exhaust gas introduced into the muffler main body 1 to the outside air.
Reference numerals 4 and 5 denote first and second support members. The first and second support members 4 and 5 are provided in the muffler main body 1 so as to cross the muffler main body 1, and the exhaust pipe. 3 is supported in the muffler body 1.
The exhaust flow of the exhaust pipe 3 flows from upstream to downstream, as indicated by reference signs A, B, and C, branches at reference sign C to reference signs D and E, and joins at reference sign H, and reference signs I and J , K in that order.
The muffler body 1 is partitioned into a second chamber Y with respect to the first chamber X by the first support member 4, and the second chamber X is divided into the second ′ chamber Y by the second support member 5. 1 and is divided into chambers Y 2 of the second "end a of the opening of the exhaust pipe 3 in the first chamber X, and the other end K of the opening of the exhaust pipe 3 is made so as to face each to the outside air.

また、第２’の室Ｙ1 は、マフラ−本体１内の第１の支持部材４と第２の支持部材５との間に設けられた室である。
なお、マフラ−本体１内を蛇行する排気管３は、少なくとも、第２’の室Ｙ1 、第２”の室Ｙ2 、第１の室Ｘに位置するようになっている。また、第２’の室Ｙ2 内に位置する排気管３には、複数の開口部31が設けられている。７は吸音材で、吸音材７は、耐熱性を有し、複数の開口部31を覆うように一方の第２’の室Ｙ2 内に設けられている。一方の吸音材７は、例えば、一方の排気管３の周囲にステンレスウ−ル71が、ステンレスウ−ル71の外に耐熱性のグラスウ−ル72が位置するようになっている。排気管３のＣ、Ｈ、ＪからＫの部分には、開口部31は設けられておらず、また、排気管３のＪからＫの部分は、外気に向かって排気管３の通路が漸次拡大するようになっている。 The second ′ chamber Y 1 is a chamber provided between the first support member 4 and the second support member 5 in the muffler body 1.
The exhaust pipe 3 meandering in the muffler body 1 is positioned at least in the second 'chamber Y 1 , the second "chamber Y 2 , and the first chamber X. The exhaust pipe 3 located in the 2 ′ chamber Y 2 is provided with a plurality of openings 31. Reference numeral 7 denotes a sound-absorbing material, and the sound-absorbing material 7 has heat resistance. . provided as the chamber Y 2 of one of the second 'covers one of the sound absorbing material 7, for example, stainless steel U around the one of the exhaust pipe 3 - Le 71, stainless U - outside Le 71 A heat-resistant glass wool 72 is located on the C., H, J to K portion of the exhaust pipe 3, and no opening 31 is provided. From the portion to K, the passage of the exhaust pipe 3 gradually expands toward the outside air.

なお、上述した実施例においては、排気ガス導入管２の開口の一端Ａと排気管３の開口の一端とが対向するようにしたが、図８に示すように、排気ガス導入管２と排気ガス導入管２の開口の一端Ａとを接続するようにしても良い。     In the embodiment described above, one end A of the opening of the exhaust gas introduction pipe 2 and one end of the opening of the exhaust pipe 3 are opposed to each other. However, as shown in FIG. One end A of the opening of the gas introduction pipe 2 may be connected.

図１は、本発明の一実施例のマフラ−の概略的断面図である。FIG. 1 is a schematic sectional view of a muffler according to an embodiment of the present invention. 図２は、図１の２−２線による概略的断面図である。FIG. 2 is a schematic cross-sectional view taken along line 2-2 of FIG. 図３は、図１の３−３線による概略的断面図である。3 is a schematic cross-sectional view taken along line 3-3 of FIG. 図４は、図１と異なる他の実施例のマフラ−の概略的断面図である。FIG. 4 is a schematic cross-sectional view of a muffler of another embodiment different from FIG. 図５は、図４の５−５線による概略的断面図である。FIG. 5 is a schematic cross-sectional view taken along line 5-5 of FIG. 図６は、図４と異なる他の実施例のマフラ−の概略的断面図である。FIG. 6 is a schematic cross-sectional view of a muffler of another embodiment different from FIG. 図７は、図６の７−７線による概略的断面図である。7 is a schematic cross-sectional view taken along line 7-7 of FIG. 図８は、図６と異なる他の実施例のマフラ−の概略的断面図である。FIG. 8 is a schematic cross-sectional view of a muffler of another embodiment different from FIG.

符号の説明Explanation of symbols

Ｍ ・・・・・マフラ−
１ ・・・・・マフラ−本体
２ ・・・・・排気ガス導入管
３ ・・・・・排気管
４ ・・・・・第１の支持部材
５ ・・・・・第２の支持部材
７ ・・・・・吸音材
31 ・・・・・開口部 M ... Muffler
DESCRIPTION OF SYMBOLS 1 ... Muffler body 2 ... Exhaust gas introduction pipe 3 ... Exhaust pipe 4 ... First support member 5 ... Second support member 7 ... Sound absorbing material
31 ・ ・ ・ ・ ・ Opening

Claims (5)

マフラ−本体と、
このマフラ−本体内に排気ガスを導入する排気ガス導入管と、
前記マフラ−本体内に導入された排気ガスを外気へ導くように、前記マフラ−本体内 を蛇行すると共に、前記マフラ−本体の外へ突出した排気管と、
前記マフラ−本体内に設けられ、前記排気管を前記マフラ−本体内で支持する第１、 第２の支持部材と、
前記マフラ−本体は前記第１の支持部材により第１の室と第２の室に仕切られ、
前記第２の室は、前記第２の支持部材により第２’の室と第２”の室に仕切られ、
前記排気管の開口の一端は前記第１の室に、前記排気管の開口の他端は外気にそれぞ れ臨み、
前記第２’の室は、前記マフラ−本体内の前記第１の支持部材と前記第２の支持部材 との間に設けられた室であり、
前記マフラ−本体内を蛇行する前記排気管は、少なくとも、前記第２’の室、前記第２”の室、前記第１の室に位置し、
前記第２’の室内に位置する前記排気管には、複数の開口部があり、
前記複数の開口部を覆うように設けられた吸音材と、
を備えていることを特徴とするマフラ−。 Muffler body,
An exhaust gas introduction pipe for introducing exhaust gas into the muffler body;
An exhaust pipe meandering inside the muffler body and projecting outside the muffler body so as to guide the exhaust gas introduced into the muffler body to the outside air;
First and second support members provided in the muffler body and supporting the exhaust pipe in the muffler body;
The muffler body is partitioned into a first chamber and a second chamber by the first support member,
The second chamber is partitioned into a second 'chamber and a second "chamber by the second support member,
One end of the exhaust pipe opening faces the first chamber, and the other end of the exhaust pipe opening faces the outside air,
The second 'chamber is a chamber provided between the first support member and the second support member in the muffler body,
The exhaust pipe meandering in the muffler body is located at least in the second 'chamber, the second "chamber, and the first chamber,
The exhaust pipe located in the second 'chamber has a plurality of openings.
A sound absorbing material provided to cover the plurality of openings;
A muffler characterized by comprising: 排気ガス導入管の開口の一端と排気管の開口の一端とが対向していることを特徴とする請求項１記載のマフラ−。     2. A muffler according to claim 1, wherein one end of the opening of the exhaust gas introduction pipe faces one end of the opening of the exhaust pipe. 排気ガス導入管の開口の一端と排気管の開口の一端とが接続されていることを特徴とする請求項１記載のマフラ−。     The muffler according to claim 1, wherein one end of the opening of the exhaust gas introduction pipe and one end of the opening of the exhaust pipe are connected. 排気ガス導入管の開口の一端と排気管の開口の一端とが対向しないものであって、前記排気ガス導入管の開口の一端に対向すると共に、排気ガスを前記排気管の開口の一端へ導くガイドが設けられていることを特徴とする請求項１記載のマフラ−。     One end of the opening of the exhaust gas introduction pipe is not opposed to one end of the opening of the exhaust pipe, is opposed to one end of the opening of the exhaust gas introduction pipe, and guides the exhaust gas to one end of the opening of the exhaust pipe. 2. A muffler according to claim 1, wherein a guide is provided. 一方の側に位置する一方のマフラ−本体と、
この一方のマフラ−本体内に排気ガスを導入する一方の排気ガス導入管と、
前記一方のマフラ−本体内に導入された排気ガスを外気へ導くように、前記一方のマフラ−本体内を蛇行すると共に、前記一方のマフラ−本体の外へ突出した一方の排気管と、
前記一方のマフラ−本体内に設けられ、前記一方の排気管を前記一方のマフラ−本体内で支持する一方の第１、第２の支持部材と、
前記一方のマフラ−本体は前記一方の第１の支持部材により一方の第１の室と一方の第２の室に仕切られ、
前記一方の第２の室は、前記一方の第２の支持部材により一方の第２’の室と一方の第２”の室に仕切られ、
前記一方の排気管の開口の一端は前記一方の第１の室に、前記一方の排気管の開口の他端は外気にそれぞれ臨み、
前記一方の第２’の室は、前記一方のマフラ−本体内の前記一方の第１の支持部材と前記一方の第２の支持部材との間に設けられた室であり、
前記一方のマフラ−本体内を蛇行する前記一方の排気管は、少なくとも、前記一方の第２’の室、前記一方の第２”の室、前記一方の第１の室に位置し、
前記一方の第２’の室内に位置する前記一方の排気管には、複数の開口部があり、
前記複数の開口部を覆うように設けられた一方の吸音材と、
他方の側に位置する他方のマフラ−本体と、
この他方のマフラ−本体内に排気ガスを導入する他方の排気ガス導入管と、
前記他方のマフラ−本体内に導入された排気ガスを外気へ導くように、前記他方のマフラ−本体内を蛇行すると共に、前記他方のマフラ−本体の外へ突出した他方の排気管と、
前記他方のマフラ−本体内に設けられ、前記他方の排気管を前記他方のマフラ−本体内で支持する他方の第１、第２の支持部材と、
前記他方のマフラ−本体は前記他方の第１の支持部材により他方の第１の室と他方の第２の室に仕切られ、
前記他方の第２の室は、前記他方の第２の支持部材により他方の第２’の室と他方の第２”の室に仕切られ、
前記他方の排気管の開口の一端は前記他方の第１の室に、前記他方の排気管の開口の他端は外気にそれぞれ臨み、
前記他方の第２’の室は、前記他方のマフラ−本体内の前記他方の第１の支持部材と前記他方の第２の支持部材との間に設けられた室であり、
前記他方のマフラ−本体内を蛇行する前記他方の排気管は、少なくとも、前記他方の第２’の室、前記他方の第２”の室、前記他方の第１の室に位置し、
前記他方の第２’の室内に位置する前記他方の排気管には、複数の開口部があり、
前記複数の開口部を覆うように設けられた他方の吸音材と、
前記一方の第１の室と前記他方の第１の室とを連通する通路を備えている
ことを特徴とするマフラ−。 One muffler body located on one side;
One exhaust gas introduction pipe for introducing exhaust gas into the one muffler body,
One exhaust pipe meandering inside the one muffler body and projecting outside the one muffler body so as to guide the exhaust gas introduced into the one muffler body to the outside air;
One of the first and second support members provided in the one muffler body and supporting the one exhaust pipe in the one muffler body;
The one muffler body is partitioned into one first chamber and one second chamber by the one first support member,
The one second chamber is partitioned by the one second support member into one second 'chamber and one second "chamber,
One end of the opening of the one exhaust pipe faces the first chamber of the one, and the other end of the opening of the one exhaust pipe faces the outside air,
The one second 'chamber is a chamber provided between the one first support member and the one second support member in the one muffler body,
The one exhaust pipe meandering in the one muffler body is located at least in the one second 'chamber, the one second "chamber, and the one first chamber,
The one exhaust pipe located in the one second 'chamber has a plurality of openings,
One sound absorbing material provided to cover the plurality of openings;
The other muffler body located on the other side;
The other exhaust gas introduction pipe for introducing the exhaust gas into the other muffler body,
The other muffler main body meandering in the other muffler main body and the other exhaust pipe projecting out of the other muffler main body so as to guide the exhaust gas introduced into the other muffler main body to the outside air;
The other first and second support members provided in the other muffler body and supporting the other exhaust pipe in the other muffler body;
The other muffler body is partitioned into the other first chamber and the other second chamber by the other first support member,
The other second chamber is partitioned by the other second support member into the other second 'chamber and the other second "chamber,
One end of the other exhaust pipe opening faces the other first chamber, and the other end of the other exhaust pipe opening faces the outside air,
The other second 'chamber is a chamber provided between the other first support member and the other second support member in the other muffler body,
The other exhaust pipe meandering in the other muffler body is located at least in the other second 'chamber, the other second "chamber, and the other first chamber,
The other exhaust pipe located in the other second 'chamber has a plurality of openings,
The other sound absorbing material provided to cover the plurality of openings,
A muffler comprising a passage communicating the one first chamber and the other first chamber.
JP2004060712A 2004-03-04 2004-03-04 Muffler and muffler mute method Expired - Fee Related JP4271601B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102011634A (en) * 2010-12-12 2011-04-13 昆明理工大学 Three-stage symmetrical muffling exhaust pipe
CN102011636A (en) * 2010-12-12 2011-04-13 昆明理工大学 Two-stage noise reduction exhaust pipe
CN103115215A (en) * 2013-03-14 2013-05-22 吴静 Noise reduction type smoke discharge pipe
JP2019007439A (en) * 2017-06-27 2019-01-17 小倉クラッチ株式会社 Air blowing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102011634A (en) * 2010-12-12 2011-04-13 昆明理工大学 Three-stage symmetrical muffling exhaust pipe
CN102011636A (en) * 2010-12-12 2011-04-13 昆明理工大学 Two-stage noise reduction exhaust pipe
CN103115215A (en) * 2013-03-14 2013-05-22 吴静 Noise reduction type smoke discharge pipe
JP2019007439A (en) * 2017-06-27 2019-01-17 小倉クラッチ株式会社 Air blowing device

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