JPS5842574Y2 - Catalyst holding device for exhaust gas purification tube - Google Patents

Catalyst holding device for exhaust gas purification tube

Info

Publication number
JPS5842574Y2
JPS5842574Y2 JP12106077U JP12106077U JPS5842574Y2 JP S5842574 Y2 JPS5842574 Y2 JP S5842574Y2 JP 12106077 U JP12106077 U JP 12106077U JP 12106077 U JP12106077 U JP 12106077U JP S5842574 Y2 JPS5842574 Y2 JP S5842574Y2
Authority
JP
Japan
Prior art keywords
catalyst body
exhaust gas
holding device
catalyst
gas purification
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
Application number
JP12106077U
Other languages
Japanese (ja)
Other versions
JPS5446919U (en
Inventor
敏勝 日比
秀和 鈴木
Original Assignee
スズキ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by スズキ株式会社 filed Critical スズキ株式会社
Priority to JP12106077U priority Critical patent/JPS5842574Y2/en
Publication of JPS5446919U publication Critical patent/JPS5446919U/ja
Application granted granted Critical
Publication of JPS5842574Y2 publication Critical patent/JPS5842574Y2/en
Expired legal-status Critical Current

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  • Exhaust Gas After Treatment (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Description

【考案の詳細な説明】 この考案は、内燃機関の排気ガスを浄化する排気ガス浄
化筒の触媒体保持装置に関する。
[Detailed Description of the Invention] This invention relates to a catalyst body holding device for an exhaust gas purification tube that purifies exhaust gas of an internal combustion engine.

内燃機関の排気ガスに二次空気を注入して燃え易くし、
触媒に触れさせて酸化反応を起させて浄化する装置が知
られている。
Injecting secondary air into the exhaust gas of an internal combustion engine to make it more flammable,
A device is known that purifies substances by bringing them into contact with a catalyst to cause an oxidation reaction.

しかし反応に伴つ発熱によって触媒体を取着している浄
化筒が熱膨張を起すので、この熱膨張の影響を受けない
ように触媒体を固定しなければならず、従って複雑な構
造となり、製作が面倒でコスト高となる。
However, the heat generated by the reaction causes thermal expansion of the purification cylinder to which the catalyst is attached, so the catalyst must be fixed so that it is not affected by this thermal expansion, resulting in a complicated structure. Manufacturing is troublesome and costs high.

この考案は、かかる点に鑑み改善したもので、以下図面
に示す本考案の実施例について説明する。
This invention has been improved in view of these points, and an embodiment of the invention shown in the drawings will be described below.

浄化筒1は、後端2を開放し、後端2に近い一側に排気
出口3を設ける。
The purification cylinder 1 has an open rear end 2 and an exhaust outlet 3 on one side near the rear end 2.

そして、後端2に後蓋4を合せ、ボルトナツトで固定す
る。
Then, the rear cover 4 is fitted to the rear end 2 and fixed with bolts and nuts.

後蓋4の中心内側には、芯軸5を溶接によって植設する
A core shaft 5 is implanted inside the center of the rear lid 4 by welding.

触媒体6は、芯孔7と多数のハニカム状の小孔8を設け
たセラミック製の担体に触媒剤をコーティングしたもの
である。
The catalyst body 6 is a ceramic carrier provided with a core hole 7 and a large number of honeycomb-shaped small holes 8 and coated with a catalyst agent.

そして、触媒体6の外周には、スチールウールで成形し
た緩衝体9を巻(。
A buffer body 9 made of steel wool is wrapped around the outer periphery of the catalyst body 6.

触媒体6は芯孔7を芯軸5の先端に挿入し、ナツト10
で固定する。
The catalyst body 6 has a core hole 7 inserted into the tip of the core shaft 5, and a nut 10
Fix it with.

浄化筒1内に緩衝体9を設けた触媒体6を挿入し、後蓋
4を浄化筒1の後端2に固定する。
A catalyst body 6 provided with a buffer body 9 is inserted into the purification cylinder 1, and a rear cover 4 is fixed to the rear end 2 of the purification cylinder 1.

作用について説明する。The effect will be explained.

排気ガスは、触媒体6の小孔8を通るとき、触媒剤に触
れて酸化反応を起して浄化し、排気出口3に流れる。
When the exhaust gas passes through the small holes 8 of the catalyst body 6, it comes into contact with the catalyst agent, causes an oxidation reaction, is purified, and flows to the exhaust outlet 3.

而して、この反応に伴う高温発熱によって、浄化筒1及
び芯軸5は、主として長さ方向に膨張するが、触媒体6
は芯軸5に固定されていて、浄化筒の軸方向に対しては
、全く自由であるので、自由に伸長移動できる。
Due to the high temperature heat generated by this reaction, the purifying cylinder 1 and the core shaft 5 expand mainly in the length direction, but the catalyst body 6
is fixed to the core shaft 5 and is completely free in the axial direction of the purification cylinder, so it can freely extend and move.

又、触媒体6は、担体がセラミックで脆いが、緩衝体9
によって振動を防止できて破損がない。
In addition, the catalyst body 6 has a ceramic carrier and is brittle, but the buffer body 9
This prevents vibration and prevents damage.

そして、緩衝体9は、触媒体6と浄化筒1の隙間を排気
ガスが流れるのを防止する。
The buffer body 9 prevents exhaust gas from flowing through the gap between the catalyst body 6 and the purification cylinder 1.

以上説明したように、この考案は、後端を開放した浄化
筒を設け、後蓋の中央に芯軸を植設し、該芯軸の先端に
触媒体を挿入固定し、触媒体の周りに緩衝体を巻き、触
媒体を浄化筒内に挿入して後蓋を浄化筒の後端に固定す
るようにしたので、触媒体が浄化筒に対し、軸方向に自
由で、浄化筒や芯軸の膨張に影響がなくなる。
As explained above, this invention provides a purification cylinder with the rear end open, a core shaft is planted in the center of the rear lid, a catalyst body is inserted and fixed at the tip of the core shaft, and a catalyst body is inserted and fixed around the catalyst body. Since the buffer body is wrapped, the catalyst body is inserted into the purification cylinder, and the rear cover is fixed to the rear end of the purification cylinder, the catalyst body is free in the axial direction with respect to the purification cylinder, and the catalyst body is inserted into the purification cylinder and the core shaft. There is no effect on the expansion of

このため製作にも精度を必要とせず安価にできる。Therefore, manufacturing does not require precision and can be made at low cost.

又、触媒体を芯軸に固定することによって、部品点数も
少く、この面でも安価になる。
Furthermore, by fixing the catalyst body to the core shaft, the number of parts is reduced, and the cost is also reduced in this respect.

そして、触媒体は緩衝体に保持されて割れ破損も少い。Further, the catalyst body is held by the buffer body, and there is little chance of cracking or damage.

更に、触媒体は後蓋と同時に着脱できて、交換組付けも
容易になる。
Furthermore, the catalyst body can be attached and detached at the same time as the rear cover, making it easy to replace and assemble.

【図面の簡単な説明】[Brief explanation of drawings]

図は本考案の一実施例を示す縦断面図である。 1・・・・・・浄化筒、 2・・・・・・後端、 4・・・・・・後蓋、 5・・・・・・芯軸、 6・・・・・・触媒体、 9・・・・・・緩衝体。 The figure is a longitudinal sectional view showing an embodiment of the present invention. 1...Purification tube, 2... Rear end, 4... Rear lid, 5... core axis, 6...Catalyst body, 9...Buffer.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 後端を開放した浄化筒を設け、後蓋の中央に芯軸を植設
し、該芯軸の先端に触媒体を挿入固定し、触媒体の周り
に緩衝体を巻き、触媒体を浄化筒内に挿入して後蓋を浄
化筒の後端に固定するようにしたことを特徴とする排気
ガス浄化筒の触媒体保持装置。
A purification tube with an open rear end is provided, a core shaft is planted in the center of the rear cover, a catalyst body is inserted and fixed at the tip of the core shaft, a buffer is wrapped around the catalyst body, and the catalyst body is inserted into the purification tube. 1. A catalyst body holding device for an exhaust gas purification cylinder, characterized in that the rear cover is fixed to the rear end of the purification cylinder by being inserted into the catalyst body.
JP12106077U 1977-09-08 1977-09-08 Catalyst holding device for exhaust gas purification tube Expired JPS5842574Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12106077U JPS5842574Y2 (en) 1977-09-08 1977-09-08 Catalyst holding device for exhaust gas purification tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12106077U JPS5842574Y2 (en) 1977-09-08 1977-09-08 Catalyst holding device for exhaust gas purification tube

Publications (2)

Publication Number Publication Date
JPS5446919U JPS5446919U (en) 1979-03-31
JPS5842574Y2 true JPS5842574Y2 (en) 1983-09-27

Family

ID=29077848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12106077U Expired JPS5842574Y2 (en) 1977-09-08 1977-09-08 Catalyst holding device for exhaust gas purification tube

Country Status (1)

Country Link
JP (1) JPS5842574Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6728781B2 (en) * 2016-03-03 2020-07-22 株式会社Ihi Reactor

Also Published As

Publication number Publication date
JPS5446919U (en) 1979-03-31

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