JPS6139081Y2 - - Google Patents
Info
- Publication number
- JPS6139081Y2 JPS6139081Y2 JP16500881U JP16500881U JPS6139081Y2 JP S6139081 Y2 JPS6139081 Y2 JP S6139081Y2 JP 16500881 U JP16500881 U JP 16500881U JP 16500881 U JP16500881 U JP 16500881U JP S6139081 Y2 JPS6139081 Y2 JP S6139081Y2
- Authority
- JP
- Japan
- Prior art keywords
- outlet pipe
- muffler
- muffler body
- pipe
- exhaust gas
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 244000124853 Perilla frutescens Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
本考案は自動車用マフラの排水構造に関するも
のである。[Detailed Description of the Invention] The present invention relates to a drainage structure for a muffler for an automobile.
自動車用マフラは通常筒状本体の内部を仕切板
により複数の区画室に区画し、インレツトパイプ
より本体内に入つた排気ガスが各区画室を通過す
る間に順次膨脹し圧力と温度が低下して行き、ア
ウトレツトパイプより外部に排出するようになつ
ているのが普通である。 Automobile mufflers usually have a cylindrical body whose interior is divided into multiple compartments by partition plates, and exhaust gas enters the main body from an inlet pipe and expands sequentially as it passes through each compartment, causing a drop in pressure and temperature. Normally, the water is discharged to the outside through an outlet pipe.
このようなマフラにおいて、マフラ本体内には
排気ガス中の水分が凝縮分離したり或は洗車時等
水がアウトレツトパイプより入つたりして水分が
たまり、マフラを腐蝕させると言う問題がある。 In such mufflers, there is a problem in that moisture in the exhaust gas condenses and separates inside the muffler body, or water enters from the outlet pipe during car washing, and moisture accumulates inside the muffler body, corroding the muffler. .
上記のような問題を防止する為にアウトレツト
パイプのマフラ本体内の開口部をマフラ本体内底
面上に近接対向させ、アウトレツトパイプのマフ
ラ本体内開口部とそれが近接対向するマフラ本体
内底面との狭いすき間よりアウトレツトパイプを
通つて外部に流出する排気ガスの流速にてマフラ
本体内底面にたまつている水をアウトレツトパイ
プ内に吸い込み排気ガスと共に外部に排出させる
装置が従来より開発され例えば実開昭55−137209
号公報等にて公開されている。しかしこれらの従
来装置はアウトレツトパイプを大きく彎曲形成し
てそのマフラ本体内開口部を該マフラ本体内底面
に近接対向させねばならないのでパイプの彎曲形
成が厄介なる上に彎曲部にて排気ガスの流れが直
線状のアウトレツトパイプに比しスムーズでなく
なり、更に水の吸い出しを効果的に行なうために
はアウトレツトパイプ開口部とマフラ本体内底面
との間のすき間を小とすることが必要であるが、
該すき間をあまり小さくすると排気のバツクプレ
ツシヤの増大をまねくばかりか、冬期における駐
車時たまつている水が凍結して排気ガス通路を閉
塞しエンジン起動が不能となる等の事故を発生さ
せることもあり、極めて不都合である。 In order to prevent the above-mentioned problems, the opening in the muffler body of the outlet pipe is closely opposed to the bottom surface of the muffler body, and the opening in the outlet pipe's muffler body and the bottom surface of the muffler body are closely opposed to each other. A device has previously been developed that uses the flow rate of the exhaust gas flowing out through the outlet pipe through a narrow gap between the muffler and the muffler body to draw water accumulated on the bottom of the muffler body into the outlet pipe and discharge it to the outside together with the exhaust gas. For example, Utsukai Showa 55-137209
It is published in the No. 3 bulletin, etc. However, in these conventional devices, the outlet pipe must be formed into a large curve and the opening in the muffler body must be closely opposed to the bottom surface of the muffler body, which makes it difficult to form a curve in the pipe and also prevents exhaust gas from flowing at the curved part. The flow is not as smooth as with a straight outlet pipe, and in order to effectively suck out water, it is necessary to reduce the gap between the outlet pipe opening and the bottom of the muffler body. Yes, but
If the gap is made too small, not only will the exhaust back pressure increase, but also the water that collects when the vehicle is parked in the winter may freeze and block the exhaust gas passage, causing accidents such as the engine not being able to start. It's inconvenient.
本考案は新たな部品の追加等は一切なしに上記
のようにマフラ本体内にたまつた水分を的確に排
出し得ると共に上記のような従来の不都合をすべ
て解消し得る構造を提供することを目的とするも
ので、以下附図実施例につき説明する。 The present invention aims to provide a structure that can accurately discharge the moisture accumulated in the muffler body as described above without adding any new parts, and can eliminate all the conventional disadvantages as described above. This purpose will be described below with reference to the accompanying drawings.
図において１は筒状のマフラ本体、２，２′は
該本体内を区画する仕切板で、該仕切板２，２′
等により本体１内は複数の区画室Ａ，Ｂ，Ｃ等に
区画される。 In the figure, 1 is a cylindrical muffler main body, 2 and 2' are partition plates that partition the inside of the main body, and the partition plates 2 and 2'
The interior of the main body 1 is divided into a plurality of compartments A, B, C, etc.
３はインレツトパイプ、４はアウトレツトパイ
プで、該インレツトパイプ３より区画室Ａに入つ
た排気ガスが仕切板２に設けた連通孔２ａよりＢ
室に入り、更に連通パイプ５を通つてＣ室に入
り、各室にて膨脹を繰り返して圧力及び温度を低
下させ、Ｃ室よりアウトレツトパイプ４を通つて
外部に排出されるようになつている。 3 is an inlet pipe, 4 is an outlet pipe, and the exhaust gas entering the compartment A from the inlet pipe 3 is passed through the communication hole 2a provided in the partition plate 2 to B.
It then enters the C chamber through the communication pipe 5, expands repeatedly in each chamber to lower the pressure and temperature, and is discharged from the C chamber to the outside through the outlet pipe 4. There is.
本考案では仕切板の下底部分に各区画室を連通
する水通路６，６′を設けると共にアウトレツト
パイプ４のある区画室例えばＢ室内部分を幅方向
に押しつぶして第２図に示すような楕円断面形状
部４ａを形成し、該楕円断面形状部４ａの下端部
にマフラ本体１の底面１ａに近接して対向する穴
４ｂを設けたものである。 In the present invention, water passages 6, 6' are provided at the bottom of the partition plate to communicate with each compartment, and the compartment where the outlet pipe 4 is located, for example, the part of room B, is crushed in the width direction to form an ellipse as shown in FIG. A cross-sectional portion 4a is formed, and a hole 4b is provided at the lower end of the elliptical cross-sectional portion 4a to be close to and opposite to the bottom surface 1a of the muffler body 1.
以上のように構成した本考案によれば、本来円
形断面の真直なパイプ材よりなるアウトレツトパ
イプ４の一部を幅方向に押しつぶすことにより長
径が上下方向に向いた楕円断面形状部４ａを形成
しその下端部に穴４ｂを設けたものであるので、
アウトレツトパイプ４をマフラ本体１の底面１ａ
から所定高さｅをもつて水平状に組付けても楕円
断面形状部４ａの長径方向下端部に設けた穴４ｂ
は図示のように底面１ａに近接対向すると共に、
円形断面をつぶして楕円断面にすると排気通路断
面積は円形断面部にくらべかなり小となり、従つ
て該楕円断面形状部４ａを流れる排気ガスの流速
は円形断面部より速く圧力は低下し、ベンチユリ
効果によりマフラ本体１の底面１ａ部にたまつた
水を効率よく穴４ｂより吸い込み、排気ガスと共
に外部に排出するものである。 According to the present invention configured as described above, by crushing a part of the outlet pipe 4 made of a straight pipe material with an originally circular cross section in the width direction, an elliptical cross-sectional portion 4a whose major axis is directed in the vertical direction is formed. Since the hole 4b is provided at the lower end of the shiso,
Connect the outlet pipe 4 to the bottom surface 1a of the muffler body 1.
Even if it is assembled horizontally with a predetermined height e from
are closely opposed to the bottom surface 1a as shown in the figure, and
When the circular cross-section is crushed to become an elliptical cross-section, the cross-sectional area of the exhaust passage becomes much smaller than that of the circular cross-section. Therefore, the flow rate of the exhaust gas flowing through the oval cross-section 4a is faster than that of the circular cross-section, and the pressure decreases, resulting in a ventilator effect. Accordingly, water accumulated on the bottom surface 1a of the muffler body 1 is efficiently sucked in through the holes 4b and discharged to the outside together with the exhaust gas.
実験上、直径31.8mmのパイプ材を押しつぶして
長径42mm、短径17mmの楕円断面形状部を形成する
と、該楕円断面形状部の断面積は約３割程度減少
し、ベンチユリ効果が作用して水の掃き出し効率
が著しく向上することを確認した。 Experimentally, when a pipe material with a diameter of 31.8 mm is crushed to form an elliptical cross-sectional area with a major axis of 42 mm and a minor axis of 17 mm, the cross-sectional area of the elliptical cross-sectional area decreases by about 30%, and the Benchlily effect acts to prevent water from flowing. It was confirmed that the cleaning efficiency was significantly improved.
以上のように本考案によれば構造が簡単で製造
コストが極めて安価であり、水抜き効率が非常に
良好であると共に、アウトレツトパイプの排気ガ
ス流入口部をマフラ本体底面部に近接するよう屈
曲させたり又はアウトレツトパイプの区画室内部
分を下方に彎曲させてマフラ底面部に近づけここ
に水吸上用の穴を設けたりしたもの等、曲管タイ
プのアウトレツトパイプを用いたものに比し本考
案のものはアウトレツトパイプが直線状であるの
で排気ガスの流れがスムーズでアウトレツトパイ
プからの異音の発生が極めて少く、更に停車中に
マフラ本体内の水が凍結しても穴４ｂをむさぐだ
けでアウトレツトパイプの排気ガス流入口までふ
さぐようなことは決してない等、実用上極めて大
なる効果をもたらし得るものである。 As described above, according to the present invention, the structure is simple, the manufacturing cost is extremely low, the water removal efficiency is very good, and the exhaust gas inlet of the outlet pipe is placed close to the bottom of the muffler body. Compared to those using a bent pipe type outlet pipe, such as one that is bent or the compartment inside of the outlet pipe is bent downward to bring it closer to the bottom of the muffler and has holes for water absorption there. However, since the outlet pipe of the present invention is straight, the flow of exhaust gas is smooth and there is very little abnormal noise from the outlet pipe.Furthermore, even if water in the muffler body freezes while the vehicle is stopped, there will be no holes in the muffler. This can bring about extremely great practical effects, such as simply blocking the outlet pipe 4b will never block the exhaust gas inlet of the outlet pipe.
第１図は本考案の実施例を示す縦断側面図、第
２図は第１図のＸ−Ｘ断面図である。
１……マフラ本体、２，２′……仕切板、３…
…インレツトパイプ、４……アウトレツトパイ
プ、４ａ……楕円断面形状部、４ｂ……穴、６，
６′……水通路。
FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along line XX in FIG. 1...muffler body, 2, 2'...partition plate, 3...
... Inlet pipe, 4 ... Outlet pipe, 4a ... Oval cross section, 4b ... Hole, 6,
6'...Water passage.
Claims (1)
気ガスが仕切板により仕切られた各区画室を順次
通つてアウトレツトパイプより排出されるように
したマフラにおいて、仕切板下底部に各区画室を
連通する水通路を設け、断面ほぼ円形のパイプ材
よりなるアウトレツトパイプのマフラ本体内部分
に、該アウトレツトパイプを幅方向に押しつぶす
ことにより縦長の楕円断面形状部を形成すると共
に、該楕円断面形状部の下端部にマフラ本体の底
面部に近接対向する穴を設けたことを特徴とする
自動車用マフラの排水構造。 In a muffler in which exhaust gas enters the muffler main body from an inlet pipe, passes sequentially through each compartment partitioned by a partition plate, and is discharged from an outlet pipe, a water passage is provided at the bottom of the partition plate to communicate each compartment. A vertically elongated elliptical section is formed by crushing the outlet pipe in the width direction in the inner part of the muffler body of an outlet pipe made of a pipe material having a substantially circular cross section, and a lower end of the elliptical section is formed by crushing the outlet pipe in the width direction. A drainage structure for a muffler for an automobile, characterized in that a hole is provided in the bottom part of the muffler body in close proximity to and opposite to the bottom part of the muffler body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16500881U JPS5870415U (en) | 1981-11-05 | 1981-11-05 | Automotive muffler drainage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16500881U JPS5870415U (en) | 1981-11-05 | 1981-11-05 | Automotive muffler drainage structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5870415U JPS5870415U (en) | 1983-05-13 |
| JPS6139081Y2 true JPS6139081Y2 (en) | 1986-11-10 |
Family
ID=29957218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16500881U Granted JPS5870415U (en) | 1981-11-05 | 1981-11-05 | Automotive muffler drainage structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5870415U (en) |
-
1981
- 1981-11-05 JP JP16500881U patent/JPS5870415U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5870415U (en) | 1983-05-13 |
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