JP2002162191A - Multi-tube type heat exchanger - Google Patents
Multi-tube type heat exchangerInfo
- Publication number
- JP2002162191A JP2002162191A JP2000358035A JP2000358035A JP2002162191A JP 2002162191 A JP2002162191 A JP 2002162191A JP 2000358035 A JP2000358035 A JP 2000358035A JP 2000358035 A JP2000358035 A JP 2000358035A JP 2002162191 A JP2002162191 A JP 2002162191A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- burring
- tube sheet
- heat transfer
- heat exchanger
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
- F28F9/185—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding with additional preformed parts
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、一般産業用、自動
車用などに用いられる多管式熱交換器とその製造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multitubular heat exchanger used for general industries, automobiles, and the like, and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】各種流体の加熱あるいは冷却用もしくは
ＥＧＲガスの冷却等に用いられる多管式熱交換器として
は、図６、図７にその一例を示すごとく、両端部に第１
熱交換流体入口１１−１および出口１１−２を設けた胴
管（シェル）１１と、伝熱管（チューブ）群１２の両端
部を固定する板金製のチューブシート１３および第２熱
交換流体入口１４−１および出口１４−２が設けられた
端部キャップ（ボンネット）１４とで構成されており、
その接続構造はチューブシート１３が胴管（シェル）１
１または端部キャップ１４に固定され、かつ各伝熱管１
２−１とチューブシート１３のろう付け部は、薄肉チュ
ーブシート１３−１にバーリング壁１３−１ａを設けた
貫通孔に伝熱管１２−１の端部を嵌入した状態でろう付
けした構造である（特開平７−３２４８８７号公報参
照）。2. Description of the Related Art As an example of a multi-tube heat exchanger used for heating or cooling various fluids or for cooling EGR gas, as shown in FIGS.
A body tube (shell) 11 provided with a heat exchange fluid inlet 11-1 and an outlet 11-2, a sheet metal tube sheet 13 for fixing both ends of a heat transfer tube (tube) group 12, and a second heat exchange fluid inlet 14 -1 and an end cap (bonnet) 14 provided with an outlet 14-2.
The connection structure is such that the tube sheet 13 is composed of the body tube (shell) 1.
1 or end caps 14 and each heat transfer tube 1
The brazing portion between 2-1 and the tube sheet 13 has a structure in which the end portion of the heat transfer tube 12-1 is fitted into a through hole provided with the burring wall 13-1a in the thin tube sheet 13-1 and brazed. (See JP-A-7-324887).
【０００３】[0003]
【発明が解決しようとする課題】しかるに、上記した従
来の多管式熱交換器の場合は、チューブシート１３を胴
管（シェル）１１または端部キャップ１４に固定する方
式であるため、チューブシート１３は薄肉のものでは強
度を確保できないため厚肉する必要があるが、厚肉のチ
ューブシートでは、バーリング加工が困難となり所望の
バーリング壁長ささが得られず、短いバーリング壁とな
らざるを得ないため伝熱管１２−１のろう付け長さが短
くなりろう付け強度が低くなる。チューブシートと伝熱
管のろう付け部の強度が低いと、各種装置あるいはエン
ジンや自動車の走行中に生じる振動やＥＧＲガス自体の
圧力変動に伴う脈動等により発生する応力集中により当
該ろう付け部に亀裂が入り、該亀裂より熱交換流体が漏
れるなどの現象が起こるため、チューブシートと伝熱管
のろう付け部の強度は高くする必要がある。しかしなが
ら、従来のいわゆる１枚物の板材からなるチューブシー
トでは、前記したごとくチューブシートと伝熱管のろう
付け長さを長くできないのが実状である。However, in the case of the above-mentioned conventional multi-tube heat exchanger, the tube sheet 13 is fixed to the body tube (shell) 11 or the end cap 14, so that the tube sheet is not used. In the case of a thin tube sheet 13, it is necessary to increase the wall thickness. However, in the case of a thick tube sheet, burring becomes difficult and a desired burring wall length cannot be obtained. Since there is no brazing, the brazing length of the heat transfer tube 12-1 is short, and the brazing strength is low. If the strength of the brazing portion between the tube sheet and the heat transfer tube is low, cracks may occur in the brazing portion due to stress generated by vibrations generated during the operation of various devices, engines, or automobiles, or pulsations caused by pressure fluctuations of the EGR gas itself. Phenomena such as leakage of the heat exchange fluid from the cracks, the brazing portion between the tube sheet and the heat transfer tube needs to have high strength. However, in the conventional tube sheet made of a so-called one-piece plate material, the brazing length of the tube sheet and the heat transfer tube cannot be lengthened as described above.
【０００４】本発明はこのような従来技術の実状に鑑み
てなされたもので、少なくとも一方のチューブシートを
２枚板構造とすることによって伝熱管とのろう付け長さ
を長くできて、前記応力に十分耐え得るろう付け強度を
有する高耐久性と信頼性に富む多管式熱交換器を提供し
ようとするものである。[0004] The present invention has been made in view of such a situation of the prior art, and by making at least one of the tube sheets into a two-plate structure, the length of brazing to the heat transfer tube can be increased, and the above-mentioned stress can be reduced. It is an object of the present invention to provide a highly durable and reliable multi-tube heat exchanger having a brazing strength enough to withstand the heat.
【０００５】[0005]
【課題を解決するための手段】本発明に係る多管式熱交
換器は、両端部に第１熱交換流体入口および出口が設け
られた胴管、該胴管の内壁の両端部付近に設けられるチ
ューブシート、該チューブシートに支持される伝熱管
群、および前記胴管の両端部に配設される第２熱交換流
体入口および出口が設けられた端部キャップが、それぞ
れろう付けもしくは溶接にて一体化された構造の多管式
熱交換器において、少なくとも一方の前記チューブシー
トを、前記伝熱管と内接するバーリング壁を有する薄肉
のバーリングチューブシートと厚肉のバックアップチュ
ーブシートをろう付けまたは溶接にて一体化して構成し
たことを特徴とするものである。また、前記チューブシ
ートのバーリング壁の高さは、伝熱管の肉厚の２倍以
上、管径の２倍以下であることを特徴とし、さらに伝熱
管がバーリングチューブシートに当接していることを特
徴とするものである。SUMMARY OF THE INVENTION A multitubular heat exchanger according to the present invention has a body tube having first heat exchange fluid inlets and outlets at both ends, and is provided near both ends of an inner wall of the body tube. A tube sheet, a heat transfer tube group supported by the tube sheet, and end caps provided with second heat exchange fluid inlets and outlets provided at both ends of the body tube are respectively brazed or welded. In a multi-tube heat exchanger having an integrated structure, at least one of the tube sheets is brazed or welded to a thin burring tube sheet having a burring wall inscribed with the heat transfer tube and a thick backup tube sheet. It is characterized by having been constituted integrally by. Further, the height of the burring wall of the tube sheet is not less than twice the thickness of the heat transfer tube and not more than twice the tube diameter, and furthermore, the heat transfer tube is in contact with the burring tube sheet. It is a feature.
【０００６】[0006]
【発明の実施の形態】図１は本発明に係る多管式熱交換
器のチューブシートと伝熱管のろう付け部の一実施例を
示す一部拡大断面図、図２は同上の多管式熱交換器のチ
ューブシートと伝熱管のろう付け部の他の実施例を示す
一部拡大断面図、図３は同上の多管式熱交換器のチュー
ブシートの一部を示す斜視図、図４は同じく他のチュー
ブシートの一部を示す斜視図、図５は同じく別のチュー
ブシートの一部を示す斜視図であり、１は胴管、２は伝
熱管、３Ａ、３Ｂ、３Ｃはチューブシート、４は端部キ
ャップである。FIG. 1 is a partially enlarged cross-sectional view showing an embodiment of a tube sheet and a brazing portion of a heat transfer tube of a multi-tube heat exchanger according to the present invention. FIG. FIG. 3 is a partially enlarged cross-sectional view showing another embodiment of the tube sheet of the heat exchanger and the brazing portion of the heat transfer tube. FIG. 3 is a perspective view showing a part of the tube sheet of the multi-tube heat exchanger. Is a perspective view showing a part of another tube sheet, FIG. 5 is a perspective view showing a part of another tube sheet, 1 is a body tube, 2 is a heat transfer tube, 3A, 3B and 3C are tube sheets. Reference numeral 4 denotes an end cap.
【０００７】すなわち図１に示す多管式熱交換器は、胴
管１、伝熱管２、チューブシート３Ａおよび端部キャッ
プ４で構成された多管式熱交換器であって、チューブシ
ート３Ａは薄肉のバーリングチューブシート３Ａ−１と
厚肉のバックアップチューブシート３Ａ−２をろう付け
または溶接にて一体化して構成したもので、薄肉のバー
リングチューブシート３Ａ−１は、例えば該チューブシ
ート３Ａ−１の円形の貫通孔部にバーリング成形により
突出する円筒形のバーリング壁３Ａ−１ａを形成し、こ
のバーリング壁３Ａ−１ａに伝熱管２の開口端部を外嵌
させ、伝熱管２の開口端面をバーリング壁３Ａ−１ａの
付け根まで嵌入させて当該部分と、バーリング壁３Ａ−
１ａの端部と伝熱管２の内面とをろう付けしたものを、
該薄肉のバーリングチューブシート３Ａ−１より厚肉で
剛性の高い平板部に前記バーリング壁３Ａ−１ａを形成
した貫通孔と同径もしくは僅かに大径の貫通孔３Ａ−２
ａを設けたバックアップチューブシート３Ａ−２をろう
付けまたは溶接にて一体化したもので、この多管式熱交
換器の場合は厚肉のバックアップチューブシート３Ａ−
２を胴管１および端部キャップ４にろう付けまたは溶接
する。この多管式熱交換器におけるバーリングチューブ
シート３Ａ−１に形成したバーリング壁３Ａ−１ａの高
さは、伝熱管２の肉厚の２倍以上、管径の２倍以下の長
さとする。その理由は、伝熱管２の２倍未満ではバーリ
ング壁の強度が弱く、またろう付け長さが短くて気密を
保有しにくく、他方、管径の２倍を超えても効果に差が
ないためである。また、図２は前記伝熱管２をバーリン
グ壁３Ａ−１ａの途中まで嵌入させて当該伝熱管２をバ
ーリング壁３Ａ−１ａにろう付けしたもので、この場合
もバーリングチューブシート３Ａ−１に形成したバーリ
ング壁３Ａ−１ａの高さは、伝熱管２の管径の２倍以下
の長さであればよいが、管端部とバーリングチューブシ
ートとの間に隙間を設けているので、伝熱管２の管長に
バラツキが多少あってもそれを吸収することができる。
なお、図１、図２に示すチューブシート３Ａの外観は、
その一部を図３に示すごとく、バーリング壁３Ａ−１ａ
を有する貫通孔が設けられたバーリングチューブシート
３Ａ−１の背面側に、前記バーリングリング壁３Ａ−１
ａを形成した貫通孔と同径もしくは僅かに大径の貫通孔
３Ａ−２ａを設けたバックアップチューブシート３Ａ−
２を一体に設けた構造となっている。That is, the multi-tube heat exchanger shown in FIG. 1 is a multi-tube heat exchanger composed of a body tube 1, a heat transfer tube 2, a tube sheet 3A and an end cap 4, and the tube sheet 3A is The thin burring tube sheet 3A-1 and the thick backup tube sheet 3A-2 are integrated by brazing or welding. The thin burring tube sheet 3A-1 is, for example, a tube sheet 3A-1. A cylindrical burring wall 3A-1a protruding by burring molding is formed in the circular through-hole portion, and the open end of the heat transfer tube 2 is fitted to the burring wall 3A-1a. The burring wall 3A-1a is fitted into the base of the burring wall 3A-1a,
The brazed end of 1a and the inner surface of the heat transfer tube 2
A through-hole 3A-2 having the same diameter or a slightly larger diameter as the through-hole in which the burring wall 3A-1a is formed in a flat plate portion thicker and more rigid than the thin-walled burring tube sheet 3A-1.
In the case of this multi-tube heat exchanger, the backup tube sheet 3A-2 provided with a thicker backup tube sheet 3A-2 is integrated by brazing or welding.
2 is brazed or welded to the body tube 1 and the end cap 4. The height of the burring wall 3A-1a formed on the burring tube sheet 3A-1 in this multi-tube heat exchanger is set to be at least twice the wall thickness of the heat transfer tube 2 and at most twice the tube diameter. The reason is that the strength of the burring wall is weak when the heat transfer tube 2 is less than twice, and the brazing length is short and it is difficult to maintain airtightness. It is. FIG. 2 shows the heat transfer tube 2 fitted into the burring wall 3A-1a halfway and brazed to the burring wall 3A-1a. In this case, the heat transfer tube 2 is formed on the burring tube sheet 3A-1. The height of the burring wall 3A-1a may be not more than twice the pipe diameter of the heat transfer tube 2, but since a gap is provided between the pipe end and the burring tube sheet, the height of the heat transfer tube 2A is reduced. Even if there is some variation in the pipe length, it can be absorbed.
The appearance of the tube sheet 3A shown in FIGS.
A part of the burring wall 3A-1a is shown in FIG.
The burring ring wall 3A-1 is provided on the back side of the burring tube sheet 3A-1 provided with a through hole having
a backup tube sheet 3A- provided with a through-hole 3A-2a having the same diameter or a slightly larger diameter as the through-hole in which a is formed.
2 are provided integrally.
【０００８】図４に示す多管式熱交換器は、断面矩形の
伝熱管に対応させたもので、この場合は薄肉のバーリン
グチューブシート３Ｂ−１の矩形の貫通孔部にバーリン
グ成形により内側に突出する矩形のバーリング壁３Ｂ−
１ａを形成し、このバーリング壁３Ｂ−１ａに矩形断面
の伝熱管（図示せず）の開口端部を前記と同様に外嵌さ
せて、当該部分をろう付けして伝熱管２の管端部をバー
リングチューブシート３Ｂ−１にろう付けしたものを、
該薄肉のバーリングチューブシート３Ｂ−１より厚肉で
剛性の高い平板部に前記バーリング壁３Ｂ−１ａを形成
した貫通孔とほぼ等しい矩形もしくは円形の貫通孔を設
けたバックアップチューブシート３Ｂ−２をろう付けま
たは溶接にて一体化したもので、この多管式熱交換器の
場合も厚肉のバックアップチューブシート３Ｂ−２を胴
管１および端部キャップ４にろう付けまたは溶接する。
この多管式熱交換器におけるバーリングチューブシート
３Ａ−１に形成したバーリング壁３Ａ−１ａの高さも前
記と同様、伝熱管の肉厚の２倍以上もしくは管径の２倍
以下の長さとする。The multi-tube heat exchanger shown in FIG. 4 corresponds to a heat transfer tube having a rectangular cross section. In this case, the rectangular through hole of the thin burring tube sheet 3B-1 is formed inside by burring molding. Protruding rectangular burring wall 3B-
1a, and the open end of a heat transfer tube (not shown) having a rectangular cross section is externally fitted to the burring wall 3B-1a in the same manner as described above, and the portion is brazed to form a tube end of the heat transfer tube 2. To the burring tube sheet 3B-1
A backup tube sheet 3B-2 in which a rectangular or circular through-hole substantially equal to the through-hole in which the burring wall 3B-1a is formed is provided in a flat plate portion thicker and more rigid than the thin burring tube sheet 3B-1. In the case of this multi-tube type heat exchanger, the thick backup tube sheet 3B-2 is brazed or welded to the body tube 1 and the end cap 4.
The height of the burring wall 3A-1a formed on the burring tube sheet 3A-1 in this multi-tube heat exchanger is also set to be twice or more the wall thickness of the heat transfer tube or twice or less the tube diameter, similarly to the above.
【０００９】図５に示す多管式熱交換器は、図４に示す
多管式熱交換器と同様、断面長方形の伝熱管に対応させ
たもので、この場合は薄肉のバーリングチューブシート
３Ｃ−１の長方形の貫通孔部の各辺にバーリング成形に
より舌状のバーリング壁３Ｃ−１ａを形成し、このバー
リング壁３Ｃ−１ａに断面長方形の伝熱管（図示せず）
の開口端部を外嵌させて、当該部分をろう付けして伝熱
管の管端部を前記と同様にバーリングチューブシート３
Ｃ−１にろう付けしたものを、該薄肉のバーリングチュ
ーブシート３Ｃ−１より厚肉で剛性の高い平板に、前記
バーリング壁３Ｃ−１ａを形成した貫通孔とほぼ等しい
断面積の長円形もしくは楕円形の貫通孔３Ｃ−２ａを設
けたバックアップチューブシート３Ｃ−２をろう付けま
たは溶接にて一体化したもので、この多管式熱交換器の
場合も厚肉のバックアップチューブシート３Ｃ−２を胴
管１および端部キャップ４にろう付けまたは溶接する。
この多管式熱交換器におけるバーリングチューブシート
３Ｃ−１に形成したバーリング壁３Ｃ−１ａの高さも前
記と同様、伝熱管の肉厚の２倍以上もしくは管径の２倍
以下の長さとする。The multi-tube heat exchanger shown in FIG. 5 corresponds to a heat transfer tube having a rectangular cross section, similarly to the multi-tube heat exchanger shown in FIG. 4. In this case, a thin burring tube sheet 3C- A tongue-shaped burring wall 3C-1a is formed on each side of the rectangular through hole by burring molding, and a heat transfer tube (not shown) having a rectangular cross section is formed on the burring wall 3C-1a.
The outer end of the heat transfer tube is fitted to the outer end of the burring tube sheet 3 in the same manner as described above.
C-1 is brazed to a thinner burring tube sheet 3C-1 and is thicker and more rigid than a flat plate, and is formed into an oval or elliptical cross-sectional area substantially equal to the through hole formed with the burring wall 3C-1a. The backup tube sheet 3C-2 provided with the through hole 3C-2a is integrally formed by brazing or welding. In the case of this multi-tube heat exchanger, the thick backup tube sheet 3C-2 is also used as the body. Braze or weld to tube 1 and end cap 4.
The height of the burring wall 3C-1a formed on the burring tube sheet 3C-1 in this multi-tubular heat exchanger is also set to be twice or more the wall thickness of the heat transfer tube or twice or less the tube diameter in the same manner as described above.
【００１０】なお、伝熱管の材質としては、ＳＵＳ３０
４、ＳＵＳ３０４Ｌ、ＳＵＳ３１６、ＳＵＳ３１６Ｌ、
ＳＵＳ３２１などのオーステナイト系ステンレス鋼など
が用いられ、外径は種々のものが使用されるがＥＧＲク
ーラー用では１２．０ｍｍ〜５．０ｍｍで、長さは１２
０〜６００ｍｍ程度のものが多いが特に長さの制限はな
く、矩形断面のものも多用される。また、胴管や２枚構
造のチューブシートも伝熱管と同様の材質である。この
ような材質の多管式熱交換器における伝熱管群とチュー
ブシートの固着に使用されるろう材としては、例えばＣ
ｒ７ｗｔ％、Ｂ３ｗｔ％、Ｓｉ４ｗｔ％、Ｆｅ３ｗｔ
％、残部ＮｉからなるＮｉ基ろう材である。また、組立
方式は、各部を個々にろう付け、溶接により組立てても
よいが、ろう付け炉などを使用して各部を一括してろう
付け組立てしてもよい。The material of the heat transfer tube is SUS30
4, SUS304L, SUS316, SUS316L,
Austenitic stainless steel such as SUS321 is used, and various outer diameters are used. For an EGR cooler, the outer diameter is 12.0 mm to 5.0 mm and the length is 12 mm.
There are many about 0 to 600 mm, but there is no particular limitation on the length, and those having a rectangular cross section are often used. Further, the body tube and the tube sheet having the two-sheet structure are made of the same material as the heat transfer tube. Examples of the brazing material used for fixing the heat transfer tube group and the tube sheet in the multi-tube heat exchanger made of such a material include, for example, C
r7wt%, B3wt%, Si4wt%, Fe3wt
%, With the balance being Ni. In addition, in the assembling method, each part may be individually brazed and assembled by welding, or each part may be collectively brazed and assembled using a brazing furnace or the like.
【００１１】[0011]
【発明の効果】以上説明したごとく、本発明に係る多管
式熱交換器は、薄肉のバーリングチューブシートと厚肉
のバックアップチューブシートをろう付けにて一体化し
て構成したチューブシートを用いたことにより、ろう付
け長さが長くなり強度的に優れたろう付け部が得られる
と共に、厚肉のバックアップチューブシートでチューブ
シート自体の強度を保持できるので流体圧に対する剛性
も十分に確保することができ、また矩形断面の伝熱管で
あっても特にバッアップチューブシートの貫通孔を円形
もしくは楕円形とすることにより、伝熱管とチューブシ
ートのろう付け部には応力集中により亀裂が入ることも
なくなり、耐久性、信頼性に富む。また、バーリングチ
ューブシートには薄肉のものを使用できるので、バーリ
ング加工の際にバーリング壁にクラックを生じることが
なく、耐久性に優れたバーリング壁が得られるなどの効
果も奏する。As described above, the multi-tubular heat exchanger according to the present invention uses a tube sheet in which a thin burring tube sheet and a thick backup tube sheet are integrated by brazing. Thereby, the brazing length is increased and a brazing part excellent in strength is obtained, and the strength of the tube sheet itself can be maintained by the thick backup tube sheet, so that sufficient rigidity against fluid pressure can be secured, Even for heat transfer tubes with a rectangular cross section, by making the through-holes in the backup tube sheet circular or elliptical, cracks do not enter the brazed portion between the heat transfer tube and the tube sheet due to stress concentration, and durability. , Reliable. In addition, since a thin burring tube sheet can be used, cracks are not generated in the burring wall during burring, and the burring wall sheet having excellent durability can be obtained.
【図１】本発明に係る多管式熱交換器のチューブシート
と伝熱管のろう付け部の一実施例を示す一部拡大断面図
である。FIG. 1 is a partially enlarged cross-sectional view showing one embodiment of a tube sheet and a brazing portion of a heat transfer tube of a multitubular heat exchanger according to the present invention.
【図２】同上の多管式熱交換器のチューブシートと伝熱
管のろう付け部の他の実施例を示す一部拡大断面図であ
る。FIG. 2 is a partially enlarged sectional view showing another embodiment of the tube sheet of the multi-tube heat exchanger and the brazing portion of the heat transfer tube.
【図３】同上の多管式熱交換器のチューブシートの一部
を示す斜視図である。FIG. 3 is a perspective view showing a part of a tube sheet of the multi-tube heat exchanger according to the first embodiment.
【図４】同じく他のチューブシートの一部を示す斜視図
である。FIG. 4 is a perspective view showing a part of another tube sheet.
【図５】同じく別のチューブシートの一部を示す斜視図
である。FIG. 5 is a perspective view showing a part of another tube sheet.
【図６】本発明の対象とする従来の多管式熱交換器の一
例を中央部を省略して示す横断平面図である。FIG. 6 is a cross-sectional plan view showing an example of a conventional multi-tube heat exchanger to which the present invention is applied, omitting a central portion.
【図７】同上従来の多管式熱交換器におけるチューブシ
ートと伝熱管のろう付け部を示す一部拡大断面図でであ
る。FIG. 7 is a partially enlarged cross-sectional view showing a brazed portion between a tube sheet and a heat transfer tube in the conventional multi-tube heat exchanger.
１ 胴管 ２ 伝熱管 ３Ａ、３Ｂ、３Ｃ チューブシート ３Ａ−１、３Ｂ−１、３Ｃ−１ バーリングチューブシ
ート ３Ａ−２、３Ｂ−２、３Ｃ−２ バックアップチューブ
シート ３Ａ−１ａ、３Ｂ−１ａ、３Ｃ−１ａ バーリング壁 ３Ｃ−２ａ 長円形もしくは楕円形の貫通孔 ４ 端部キャップ1 Body tube 2 Heat transfer tube 3A, 3B, 3C Tube sheet 3A-1, 3B-1, 3C-1 Burring tube sheet 3A-2, 3B-2, 3C-2 Backup tube sheet 3A-1a, 3B-1a, 3C -1a Burring wall 3C-2a Oval or elliptical through hole 4 End cap
Claims (3)
が設けられた胴管、該胴管の内壁の両端部付近に設けら
れるチューブシート、該チューブシートに支持される伝
熱管群、および前記胴管の両端部に配設される第２熱交
換流体入口および出口が設けられた端部キャップが、そ
れぞれろう付けもしくは溶接にて一体化された構造の多
管式熱交換器において、少なくとも一方の前記チューブ
シートを、前記伝熱管と内接するバーリング壁を有する
薄肉のバーリングチューブシートと厚肉のバックアップ
チューブシートをろう付けまたは溶接にて一体化して構
成したことを特徴とする多管式熱交換器。1. A body tube provided with a first heat exchange fluid inlet and an outlet at both ends, a tube sheet provided near both ends of an inner wall of the body tube, a heat transfer tube group supported by the tube sheet, and In a multi-tube heat exchanger having a structure in which end caps provided with second heat exchange fluid inlets and outlets provided at both ends of the body tube are respectively integrated by brazing or welding, A multi-tubular heat exchanger, wherein one of the tube sheets is formed by brazing or welding a thin-walled burring tube sheet having a burring wall insulated with the heat transfer tube and a thick-walled backup tube sheet. Exchanger.
さは、伝熱管の肉厚の２倍以上、管径の２倍以下である
ことを特徴とする請求項１記載の多管式熱交換器。2. The multi-tube heat exchanger according to claim 1, wherein the height of the burring wall of the tube sheet is at least twice the thickness of the heat transfer tube and at most twice the tube diameter. .
に当接していることを特徴とする請求項１または２記載
の多管式熱交換器。3. The multi-tube heat exchanger according to claim 1, wherein the heat transfer tube is in contact with a burring tube sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000358035A JP4614249B2 (en) | 2000-11-24 | 2000-11-24 | Multi-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000358035A JP4614249B2 (en) | 2000-11-24 | 2000-11-24 | Multi-tube heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002162191A true JP2002162191A (en) | 2002-06-07 |
| JP4614249B2 JP4614249B2 (en) | 2011-01-19 |
Family
ID=18830007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000358035A Expired - Fee Related JP4614249B2 (en) | 2000-11-24 | 2000-11-24 | Multi-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4614249B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100596021B1 (en) | 2005-12-08 | 2006-07-03 | 합자회사 소백산업 | Egr cooler housing |
| JP2007113795A (en) * | 2005-10-18 | 2007-05-10 | Usui Kokusai Sangyo Kaisha Ltd | Multitubular heat exchanger for exhaust gas cooling device |
| JP2007178109A (en) * | 2005-12-28 | 2007-07-12 | Usui Kokusai Sangyo Kaisha Ltd | Multitubular heat exchanger for exhaust gas cooling device |
| JP2009162396A (en) * | 2007-12-28 | 2009-07-23 | Showa Denko Kk | Double-wall-tube heat exchanger |
| JP2009204165A (en) * | 2008-02-26 | 2009-09-10 | Showa Denko Kk | Double pipe heat exchanger |
| JP2013514513A (en) * | 2009-12-18 | 2013-04-25 | ヴァレオ システム テルミク | Heat exchanger |
| JP2019041557A (en) * | 2017-08-29 | 2019-03-14 | 東芝三菱電機産業システム株式会社 | Cooling pipe protective structure and totally enclosed fan cooled type rotary electric machine |
| JP2019105271A (en) * | 2017-12-14 | 2019-06-27 | ハンオン システムズ | Exhaust gas cooler, and exhaust gas recirculation system with exhaust gas cooler |
| WO2023241604A1 (en) * | 2022-06-15 | 2023-12-21 | 绍兴永风节能科技有限公司 | Efficient heat exchanger |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07324887A (en) * | 1994-05-31 | 1995-12-12 | Tsuchiya Mfg Co Ltd | Multi-tubular type heat exchanger core and its manufacture |
-
2000
- 2000-11-24 JP JP2000358035A patent/JP4614249B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07324887A (en) * | 1994-05-31 | 1995-12-12 | Tsuchiya Mfg Co Ltd | Multi-tubular type heat exchanger core and its manufacture |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007113795A (en) * | 2005-10-18 | 2007-05-10 | Usui Kokusai Sangyo Kaisha Ltd | Multitubular heat exchanger for exhaust gas cooling device |
| KR100596021B1 (en) | 2005-12-08 | 2006-07-03 | 합자회사 소백산업 | Egr cooler housing |
| JP2007178109A (en) * | 2005-12-28 | 2007-07-12 | Usui Kokusai Sangyo Kaisha Ltd | Multitubular heat exchanger for exhaust gas cooling device |
| JP2009162396A (en) * | 2007-12-28 | 2009-07-23 | Showa Denko Kk | Double-wall-tube heat exchanger |
| JP2009204165A (en) * | 2008-02-26 | 2009-09-10 | Showa Denko Kk | Double pipe heat exchanger |
| JP2013514513A (en) * | 2009-12-18 | 2013-04-25 | ヴァレオ システム テルミク | Heat exchanger |
| JP2019041557A (en) * | 2017-08-29 | 2019-03-14 | 東芝三菱電機産業システム株式会社 | Cooling pipe protective structure and totally enclosed fan cooled type rotary electric machine |
| JP2019105271A (en) * | 2017-12-14 | 2019-06-27 | ハンオン システムズ | Exhaust gas cooler, and exhaust gas recirculation system with exhaust gas cooler |
| WO2023241604A1 (en) * | 2022-06-15 | 2023-12-21 | 绍兴永风节能科技有限公司 | Efficient heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4614249B2 (en) | 2011-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH09310995A (en) | Egr gas cooler | |
| US8393382B2 (en) | Heat exchanger with telescoping expansion joint | |
| US20070000652A1 (en) | Heat exchanger with dimpled tube surfaces | |
| JP2002162191A (en) | Multi-tube type heat exchanger | |
| JP3558131B2 (en) | Double tube heat exchanger | |
| JPH0989491A (en) | Egr gas cooling device | |
| JP2004053002A (en) | Joining structure of pipe for flange | |
| JP4646383B2 (en) | Multi-tube heat exchanger | |
| JP6406614B2 (en) | Heat exchanger header and heat exchanger provided with the same | |
| JP4009001B2 (en) | EGR gas cooler for internal combustion engine | |
| US9067289B2 (en) | Heat exchanger with telescoping expansion joint | |
| JP4726692B2 (en) | Refrigerant condenser with receiver | |
| JPH10306995A (en) | Heat transfer pipe and egr gas-cooler using it | |
| JPH11183062A (en) | Double piped heat exchanger | |
| JP2001141386A (en) | Multitubular heat exchanger | |
| JP2001108390A (en) | Multi-tube type heat exchanger and its manufacturing method | |
| JP2002350071A (en) | Double pipe heat exchanger | |
| JP2000283686A (en) | Cooling element of multiboard oil cooler | |
| JP2001027495A (en) | Joint between tank for heat-exchanger and outlet pipe | |
| JP4104270B2 (en) | Piping joint device | |
| JP2004069255A (en) | Multipipe heat exchanger | |
| JP2001227413A (en) | Shell and tube egr gas cooling device | |
| JP3318817B2 (en) | Double pipe exhaust manifold | |
| JP6146771B2 (en) | Tube tubeless multi-tube heat exchanger | |
| JP2007501374A (en) | Heat exchanger unit for automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20071121 |
|
| RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20080527 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080530 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20100618 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100629 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100827 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20101013 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20101014 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131029 Year of fee payment: 3 |
|
| LAPS | Cancellation because of no payment of annual fees |