JPH09136160A - Method for seal-welding end plate of heat exchanger and flat tube - Google Patents

Method for seal-welding end plate of heat exchanger and flat tube

Info

Publication number
JPH09136160A
JPH09136160A JP29271395A JP29271395A JPH09136160A JP H09136160 A JPH09136160 A JP H09136160A JP 29271395 A JP29271395 A JP 29271395A JP 29271395 A JP29271395 A JP 29271395A JP H09136160 A JPH09136160 A JP H09136160A
Authority
JP
Japan
Prior art keywords
flat tube
end plate
seal
welding
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.)
Withdrawn
Application number
JP29271395A
Other languages
Japanese (ja)
Inventor
Ryoji Kishikawa
良治 岸川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP29271395A priority Critical patent/JPH09136160A/en
Publication of JPH09136160A publication Critical patent/JPH09136160A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PROBLEM TO BE SOLVED: To execute a sound seal welding and to reduce the man-hour by inserting an expanding and cooling jig into a flat tube, making an end plate in close contact with the flat tube and executing seal-welding. SOLUTION: A flat tube 3 is thrusted in an end plate 2, an expanding and cooling jig 1 of copper is inserted into the flat tube 3, the flat tube 3 is expanded and the gap between the end plate 2 and the flat tube 3 is eliminated. A flange 2a is formed in the part of hole into which the flat tube 3 of the end plate 2 is inserted and comes into close contact with the external circumference face of the flat tube 3. In this state, the end plate 2 and the flat tube 3 are seal-welded by a TIG welding torch 5. Since the gap between the end plate 2 and the flat tube 3 is eliminated, the sound welding part without the erosion part can be obtained by the cooling action of the expanding and cooling jig 1.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、熱交換器の端板と
偏平管とのシール溶接方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal welding method for an end plate of a heat exchanger and a flat tube.

【０００２】[0002]

【従来の技術】従来の熱交換器の端板と偏平管とのシー
ル溶接方法を、図３及び図４によって説明する。図３及
び図４に示すように、熱交換器の端板２と偏平管３とを
シール溶接する際、端板２に偏平管３を差し込みＴＩＧ
溶接トーチ５によってＴＩＧ溶接していた。なお、４は
偏平管３に取付けられたフィンである。2. Description of the Related Art A conventional seal welding method for an end plate of a heat exchanger and a flat tube will be described with reference to FIGS. As shown in FIGS. 3 and 4, when seal welding the end plate 2 and the flat tube 3 of the heat exchanger, the flat tube 3 is inserted into the end plate 2 and the TIG is used.
TIG welding was performed by the welding torch 5. In addition, 4 is a fin attached to the flat tube 3.

【０００３】[0003]

【発明が解決しようとする課題】前記の図３及び図４に
示す従来の方法において、端板２と偏平管３とをシール
溶接する際、端板２に偏平管３を差し込んだ時、両材の
加工精度のバラツキにより、スキ間１１が生じていた。
この状態で溶接すると、端板２と偏平管３のそれぞれの
板厚が薄いため、図５に示すようにシール溶接部１０に
溶損部１２が生じ修復不可能となり、このような溶損部
１２を生じた端板と偏平管とを交換しなければならなか
った。In the conventional method shown in FIGS. 3 and 4, when the end plate 2 and the flat tube 3 are seal-welded together, when the flat tube 3 is inserted into the end plate 2, both The gap 11 was generated due to the variation in the processing accuracy of the material.
When welding is performed in this state, the plate thicknesses of the end plate 2 and the flat tube 3 are thin, and therefore, as shown in FIG. The end plate that produced 12 had to be replaced with a flat tube.

【０００４】本発明は、以上の問題点を解決することが
できる熱交換器の端板と偏平管とのシール溶接方法を提
供しようとするものである。The present invention is intended to provide a seal welding method for an end plate of a heat exchanger and a flat tube which can solve the above problems.

【０００５】[0005]

【発明が解決しようとする課題】本発明の熱交換器の端
板と偏平管とのシール溶接方法は、熱交換器の端板と偏
平管とをシール溶接するに当たり、偏平管内に拡管兼冷
却治具を偏平管に差し込み端板と偏平管とを密着させて
シール溶接することを特徴とする。The seal welding method of the end plate of the heat exchanger and the flat tube of the present invention is performed by sealing and welding the end plate of the heat exchanger and the flat tube. The jig is inserted into the flat tube, and the end plate and the flat tube are brought into close contact with each other and seal welding is performed.

【０００６】本発明では、拡管兼冷却治具を偏平管に差
し込み端板と偏平管を密着させることにより、端板と偏
平管との間にスキ間が生ずることがなく、溶損部が発生
しない。また、偏平管に差し込まれた拡管兼冷却治具は
溶接時の冷却作用を奏し、健全なシール溶接が可能とな
る。In the present invention, by inserting the pipe expanding / cooling jig into the flat tube and bringing the end plate and the flat tube into close contact with each other, there is no gap between the end plate and the flat tube, and a melting damage portion occurs. do not do. Further, the pipe expanding / cooling jig inserted into the flat pipe exerts a cooling action during welding, which enables sound seal welding.

【０００７】[0007]

【発明の実施の形態】本発明の実施の一形態を、図１及
び図２によって説明する。まず、図１に示すように、端
板２に図４に示すものと同様な形状の偏平管３を差し込
んだ後に、銅製の拡管兼冷却治具１を偏平管３に差し込
み、偏平管３を拡管して、端板２と偏平管３とのスキ間
を無くす。なお、２ａは端板２の偏平管３を差し込む穴
の部分に形成され偏平管３の外周面に接するフランジで
ある。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. First, as shown in FIG. 1, after inserting a flat tube 3 having the same shape as that shown in FIG. 4 into the end plate 2, a copper pipe expanding / cooling jig 1 is inserted into the flat tube 3 and the flat tube 3 is inserted. The pipe is expanded to eliminate the gap between the end plate 2 and the flat pipe 3. Reference numeral 2a is a flange which is formed in a hole portion of the end plate 2 into which the flat tube 3 is inserted and which contacts the outer peripheral surface of the flat tube 3.

【０００８】この状態でＴＩＧ溶接トーチ５で端板２と
偏平管３とをシール溶接する。前記のように端板２と偏
平管３との間にスキ間がないことと拡管兼冷却治具１の
冷却作用によって、図２に示すように溶損部のない健全
なシール溶接部１０を得ることができる。In this state, the end plate 2 and the flat tube 3 are seal-welded with the TIG welding torch 5. As described above, since there is no gap between the end plate 2 and the flat tube 3 and the cooling action of the tube expanding / cooling jig 1, as shown in FIG. Obtainable.

【０００９】[0009]

【発明の効果】本発明は、熱交換器の端板と偏平管とを
シール溶接するに当たり、偏平管内に拡管兼冷却治具を
差し込んで端板と偏平管とを密着させてシール溶接をし
ているために、端板と偏平管との間にスキ間が生ぜず、
かつ、拡管兼冷却治具の冷却効果によって端板と偏平管
との健全なシール溶接を行うことができる。また、溶損
部が生じて端板や偏平管を取替える必要がなく、大幅な
工数低減を図ることができる。According to the present invention, when the end plate of the heat exchanger and the flat tube are seal-welded, a pipe expanding and cooling jig is inserted into the flat tube to bring the end plate and the flat tube into close contact with each other for seal welding. Therefore, there is no gap between the end plate and the flat tube,
Moreover, sound sealing welding between the end plate and the flat tube can be performed by the cooling effect of the tube expanding and cooling jig. In addition, it is not necessary to replace the end plate and the flat tube due to the melt-dissipated portion, and the number of steps can be significantly reduced.

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

【図１】本発明の実施の一形態を示す縦断面図である。FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

【図２】前記実施の形態のシール溶接部を示す縦断面図
である。FIG. 2 is a vertical sectional view showing a seal welded portion of the embodiment.

【図３】従来の熱交換器の端板と偏平管とのシール溶接
方法を示す縦断面図である。FIG. 3 is a vertical cross-sectional view showing a conventional seal welding method for an end plate and a flat tube of a heat exchanger.

【図４】前記従来のシール溶接方法を示す平面図であ
る。FIG. 4 is a plan view showing the conventional seal welding method.

【図５】前記従来のシール溶接方法のシール溶接部を示
す縦断面図である。FIG. 5 is a vertical cross-sectional view showing a seal welded portion of the conventional seal welding method.

【符号の説明】[Explanation of symbols]

１ 拡管兼冷却治具 ２ 端板 ３ 偏平管 ４ フィン ５ ＴＩＧ溶接トーチ １０ シール溶接部 １１ スキ間 １２ 溶損部 1 Pipe expanding / cooling jig 2 End plate 3 Flat pipe 4 Fins 5 TIG welding torch 10 Seal weld 11 Gap 12 Melt damage

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 熱交換器の端板と偏平管とをシール溶接
するに当たり、偏平管内に拡管兼冷却治具を差し込み端
板と偏平管とを密着させてシール溶接することを特徴と
する熱交換器の端板と偏平管とのシール溶接方法。1. When heat-sealing an end plate of a heat exchanger and a flat tube, a heat-spreading method is characterized in that a pipe expanding / cooling jig is inserted into the flat tube and the end plate and the flat tube are brought into close contact with each other to perform seal welding. Seal welding method for end plate of exchanger and flat tube.
JP29271395A 1995-11-10 1995-11-10 Method for seal-welding end plate of heat exchanger and flat tube Withdrawn JPH09136160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29271395A JPH09136160A (en) 1995-11-10 1995-11-10 Method for seal-welding end plate of heat exchanger and flat tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29271395A JPH09136160A (en) 1995-11-10 1995-11-10 Method for seal-welding end plate of heat exchanger and flat tube

Publications (1)

Publication Number Publication Date
JPH09136160A true JPH09136160A (en) 1997-05-27

Family

ID=17785353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29271395A Withdrawn JPH09136160A (en) 1995-11-10 1995-11-10 Method for seal-welding end plate of heat exchanger and flat tube

Country Status (1)

Country Link
JP (1) JPH09136160A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002100568A1 (en) * 2001-06-06 2002-12-19 Denso Corporation Heat exchanger and method of manufacturing the heat exchanger
EP1650523A1 (en) * 2004-10-18 2006-04-26 Calsonic Kansei Corporation Joint structure of header tank and connector in heat exchanger, and method of joining thereof
JP2012121037A (en) * 2010-12-07 2012-06-28 Ihi Corp Repairing method of tube welding part of tube plate
CN102909496A (en) * 2011-08-02 2013-02-06 苏州勃朗科技有限公司 Welding deformation preventing heat conducting device
CN103042327A (en) * 2012-12-28 2013-04-17 江阴市振江钢结构有限公司 Welding structure and welding method for thin-walled tube
JP2016112599A (en) * 2014-12-16 2016-06-23 日本パーカライジング株式会社 Joint device, joint method, manufacturing method of panel type heat exchanger, and cooling device
CN106679454A (en) * 2016-12-30 2017-05-17 浙江赛迅环保科技有限公司 PTFE heat exchanger
CN115106691A (en) * 2022-08-26 2022-09-27 无锡鼎邦换热设备股份有限公司 Shell-and-tube heat exchanger welding device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002100568A1 (en) * 2001-06-06 2002-12-19 Denso Corporation Heat exchanger and method of manufacturing the heat exchanger
US6772831B2 (en) 2001-06-06 2004-08-10 Denso Corporation Heat exchanger and method for manufacturing the same
EP1650523A1 (en) * 2004-10-18 2006-04-26 Calsonic Kansei Corporation Joint structure of header tank and connector in heat exchanger, and method of joining thereof
JP2012121037A (en) * 2010-12-07 2012-06-28 Ihi Corp Repairing method of tube welding part of tube plate
CN102909496A (en) * 2011-08-02 2013-02-06 苏州勃朗科技有限公司 Welding deformation preventing heat conducting device
CN103042327A (en) * 2012-12-28 2013-04-17 江阴市振江钢结构有限公司 Welding structure and welding method for thin-walled tube
JP2016112599A (en) * 2014-12-16 2016-06-23 日本パーカライジング株式会社 Joint device, joint method, manufacturing method of panel type heat exchanger, and cooling device
CN106679454A (en) * 2016-12-30 2017-05-17 浙江赛迅环保科技有限公司 PTFE heat exchanger
CN106679454B (en) * 2016-12-30 2018-08-17 浙江赛迅环保科技有限公司 A kind of PTFE heat exchangers
CN115106691A (en) * 2022-08-26 2022-09-27 无锡鼎邦换热设备股份有限公司 Shell-and-tube heat exchanger welding device

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20030204