EP1650523A1 - Verbindungsstruktur zwischen einem Sammelkasten und einem Anschluss eines Wärmetauschers und Verfahren zu dessen Verbindung - Google Patents

Verbindungsstruktur zwischen einem Sammelkasten und einem Anschluss eines Wärmetauschers und Verfahren zu dessen Verbindung Download PDF

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Publication number
EP1650523A1
EP1650523A1 EP05022521A EP05022521A EP1650523A1 EP 1650523 A1 EP1650523 A1 EP 1650523A1 EP 05022521 A EP05022521 A EP 05022521A EP 05022521 A EP05022521 A EP 05022521A EP 1650523 A1 EP1650523 A1 EP 1650523A1
Authority
EP
European Patent Office
Prior art keywords
header tank
communication hole
connector
joint structure
plate wall
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Withdrawn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
EP05022521A
Other languages
English (en)
French (fr)
Inventor
Minoru Tsuchiya
Toru Takai
Koichi Iwasaka
Hiroyuki Tamura
Takumi Funatsu
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.)
Marelli Corp
Original Assignee
Calsonic Kansei Corp
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 Calsonic Kansei Corp filed Critical Calsonic Kansei Corp
Publication of EP1650523A1 publication Critical patent/EP1650523A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines

Definitions

  • the invention relates to a joint structure of a header tank and a connector in a heat exchanger, and a method of joining thereof.
  • Ordinary heat exchangers have a plurality of tubes in which fluid flows, fins arranged between the tubes, and header tanks for distribution and confluence joined at both ends of the tubes.
  • the header tank is joined with a block-shaped connector for external pipe connection. Joining of the header tank and the connector is generally performed by brazing simultaneously when the tubes, fins, and the header tanks are brazed together.
  • the header tank and the connector When the header tank and the connector are brazed, they must be placed in a brazing furnace in such a state that they have been positioned and temporarily fixed in advance.
  • a method is adopted that positioning and temporary fixing are performed utilizing a positioning unit provided, or positioning and temporary fixing is conducted by welding (for example, see Japanese Patent Applications Laid-open Nos. H6-229696 and H10-238987).
  • the positioning and temporary fixing method according to the related art requires a complicated structure or takes man-hours, or it is difficult to conduct reliable positioning and temporary fixing, which may cause variations of the positioning and temporary fixing and further increases in cost.
  • the invention is directed to provide a joint structure of a header tank and a connector in a heat exchanger and a joining method thereof, which allows reliable positioning and temporary fixing with a simple constitution and allows constant-quality brazing at a low cost.
  • the first aspect of the invention provides a joint structure of a header tank and a connector in a heat exchanger.
  • the joint structure includes a header tank (1) including a plate wall (1c) formed with a first communication hole (1a).
  • the joint structure includes a block-shaped connector (2) having a second communication hole (2b) positioned to the first communication hole (1a) and joined to the header tank (1).
  • the first communication hole (1a) is smaller than the second communication hole (2b).
  • the first communication hole (1a) has therearound a periphery (1b) caulked and fixed on an inner peripheral surface of the second communication hole (2a) by burring formation.
  • the header tank (1) and the connector (2) caulked and fixed on each other by burring formation may be brazed to each other.
  • the connector (2) includes a first portion (2d) diverged in a concave form.
  • the joint structure further includes a header-tank backup member (12) mating with the connector and having a second portion (12a) converged in a convex form. The diverged first portion and the converged second portion hold the plate wall (1c) therebetween.
  • the second aspect of the invention provides a method of joining a header tank and a connector in a heat exchanger.
  • the method includes the step of forming, on a plate wall (1c) of a header tank (1) of a heat exchanger, a first communication hole (1a) smaller than a second communication hole (2b) of a block-shaped connector (2).
  • the method includes the step of positioning the first and second communication holes (1a; 2b) to each other.
  • the method includes the step of inserting a punch (13a) into the header tank (1) to burring form a periphery (1b) around the first communication hole (1a), with the first and second communication holes positioned to each other.
  • the method includes the step of caulking and fixing the periphery (1b) around the first communication hole (1a) on an inner peripheral surface of the second communication hole (2b) by the punch (13a).
  • the method includes the step of brazing the header tank (1) and the connector (2) caulked and fixed.
  • the method may include the step of applying a brazing material on an outer surface of the plate wall (1c) of a header tank (1) before the step of caulking and fixing by burring formation.
  • the method may include the step of brazing the header tank (1) and the connector (2) to each other with the brazing material.
  • Figs. 1A to 1C are step diagrams illustrating a caulking process based upon a burring formation for obtaining a joint structure according to an embodiment of the invention.
  • Figs. 1A to 1C are step diagrams illustrating a caulking process based upon a burring formation.
  • a header tank 1 a connector 2, a connector backup member 11, a header tank backup member 12, a punch rod 13, and a punch 13a are illustrated.
  • the header tank 1 is of a two-separate type. Only a tank main unit in which a heat exchange fluid passage is formed is illustrated. The tank main unit is assembled with a header plate (not illustrated) joined to another tube, constituting an actual header tank.
  • the header tank 1 has a tubular base 1d extending straight.
  • the header tank 1 has a semi-cylindrical plate wall 1c, and a central portion thereof in a transverse direction has a communication hole 1a communicating with a flow holes 2a and 2b.
  • the semi-cylindrical plate wall 1c has, at the end, an oblique peripheral surface relative to the base 1d.
  • the plate wall 1c extends from the base 1d to be converged.
  • the flow holes 2a and 2b of the connector 2 constitute a stepped hole.
  • the flow holes 2a and 2b have an enlarged diameter portion 2a connected to an external pipe and a reduced diameter portion 2b connected to the communication hole 1a of the header tank 1.
  • the diameter of the communication hole 1a of the header tank 1 is formed smaller than a diameter of the flow hole 2b of the connector 2 in advance.
  • the connector 2 and the header tank 1 are supported by the backup members 11 and 12, respectively.
  • the connector 2 and the plate wall 1c of the header tank 1 are caused to abut against each other, so that the communication hole 1a and the flow hole 2b are positioned to each other.
  • the plate wall 1c of the header tank 1 is supported from inside thereof by the semicircular column portion 12a of the backup member 12 on the side of the header tank 1.
  • the semicircular column portion 12 a as a second portion has, at the end, a periphery converged to conform to the inner surface's shape of the semi-cylindrical plate wall 1c.
  • the end face of the connector 2 is supported by the flat portion of the backup member 11 on the side of the connector 2.
  • the abutting portion 2d of the connector 2 is caused to abut against the outer face of the plate wall 1c of the header tank 1.
  • the abutting portion 2d as a first portion is shaped to conform to the oblique outer surface of the distal end of the plate wall 1c.
  • the abutting portion 2d is diverged to conform to the converged outer surface of the plate wall 1c.
  • the punch rod 13 is elevated from inside of the header tank 1, while being guided by a slide hole 12b of the backup member 12.
  • the punch 13a at the distal end of the punch rod 13 burring-forms the periphery 1b around the communication hole 1a formed in the plate wall 1c of the header tank 1.
  • the punch 13a caulks and fixes the periphery 1b (burring portion) of the communication hole 1a on the inner peripheral portion of the flow hole 2b.
  • the "burring formation” means that the punch 13a stretches and flanges the periphery 1b around the communication hole 1a. The punch 13a presses the periphery 1b burred against the inner peripheral surface of the flow hole 1b.
  • brazing material may be applied on the outer face of the plate wall 1c of the header tank 1 in advance. After caulking and fixing are performed in this state by the burring formation, the header tank 1 and the connector 2 are brazed to each other by the brazing material. This method establishes brazing with stable quality without supplying brazing material later.
  • brazing is performed in a state that the header tank 1 and the connector 2 have been positioned and temporarily fixed to each other reliably and firmly, so that products with stable quality are provided. Furthermore, the burring formation is conducted simply without taking man-hours, and the automation may be performed.
  • the first communication hole is smaller than the second communication hole, and the periphery around the first communication hole is burring formed.
  • This method allows the periphery around the first communication hole to be caulking fixed on the inner peripheral surface, thus securely and firmly positioning and temporarily fixing the header tank and the connector to each other. Further, the burring formation allows for secure positioning and temporary fixing with a simple structure without taking man-hours, thus achieving brazing with a constant quality at a lower production cost.
  • the header tank and the connector are brazed to each other, thus securely joining the header tank and the connector to each other.
  • a brazing material is applied on the outer surface of the plate wall before the step of caulking and fixing by burring formation, and the header tank and the connector are brazed to each other. This method achieves brazing with a stable quality without feeding a brazing material later.

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)
EP05022521A 2004-10-18 2005-10-14 Verbindungsstruktur zwischen einem Sammelkasten und einem Anschluss eines Wärmetauschers und Verfahren zu dessen Verbindung Withdrawn EP1650523A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004303250A JP2006112759A (ja) 2004-10-18 2004-10-18 熱交換器のヘッダタンクとコネクタの接合構造及び接合方法

Publications (1)

Publication Number Publication Date
EP1650523A1 true EP1650523A1 (de) 2006-04-26

Family

ID=35811627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05022521A Withdrawn EP1650523A1 (de) 2004-10-18 2005-10-14 Verbindungsstruktur zwischen einem Sammelkasten und einem Anschluss eines Wärmetauschers und Verfahren zu dessen Verbindung

Country Status (3)

Country Link
US (1) US20060108096A1 (de)
EP (1) EP1650523A1 (de)
JP (1) JP2006112759A (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1482046A (fr) * 1966-03-07 1967-05-26 Rubanox Soc Procédé pour la réalisation d'une jonction entre un circuit tubulaire intégré et un tuyau extérieur, notamment pour échangeur thermique tel qu'évaporateur ou condenseur pour appareil frigorifique
GB2048130A (en) * 1979-05-01 1980-12-10 Borg Warner Method for reinforcing heat exchanger tube to header joints
US4813112A (en) * 1982-04-16 1989-03-21 Societe Anonyme Des Usines Chausson Method for reinforcing by means of small plates at least end rows of tubes engaged into tube end plates for constituting a heat exchanger
DE29609073U1 (de) * 1995-05-15 1996-07-04 Vaillant Joh Gmbh & Co Verbindung eines Wärmetauscherrohres mit einer Wand eines Heizschachtes
JPH09136160A (ja) * 1995-11-10 1997-05-27 Mitsubishi Heavy Ind Ltd 熱交換器の端板と偏平管とのシール溶接方法
EP1426723A1 (de) * 2002-11-29 2004-06-09 Calsonic Kansei Corporation Wärmeaustauscher

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1790897A (en) * 1931-02-03 brown
US4159035A (en) * 1974-05-30 1979-06-26 Societe Anonyme Des Usines Chausson Tube and tube-plate assembly with soft joints
FR2417741A1 (fr) * 1978-02-21 1979-09-14 Ferodo Sa Revetement de plaque a trous de boite a eau d'echangeur de chaleur a tubes
US4246958A (en) * 1978-03-21 1981-01-27 Westinghouse Electric Corp. Tube to tubesheet connection system
DE4005576A1 (de) * 1990-01-13 1991-09-26 Andreas Ing Grad Veigel Waermetauscher mit rohrboden und anschlussstutzen
US5380048A (en) * 1992-08-18 1995-01-10 Russell A Division Of Ardco, Inc. Tube joint
JP2588225Y2 (ja) * 1993-04-05 1999-01-06 東洋ラジエーター株式会社 アルミニューム製オイルクーラ
DE4403402A1 (de) * 1994-02-04 1995-08-10 Behr Gmbh & Co Rohranschluß für einen Wasserkasten eines Kraftfahrzeug-Wärmetauschers
US6230747B1 (en) * 1994-09-22 2001-05-15 Daikin Industries, Ltd. Pipe connecting method and piping structure
US5538293A (en) * 1994-11-18 1996-07-23 Thinking Vents, Inc. Secondary duct installation apparatus and method for a forced air ventilation system
JP3393957B2 (ja) * 1995-05-30 2003-04-07 サンデン株式会社 熱交換器の流体給排管接合方法
JP3414171B2 (ja) * 1996-11-29 2003-06-09 株式会社デンソー 熱交換器
JP3593434B2 (ja) * 1997-02-06 2004-11-24 サンデン株式会社 熱交換器ユニット
JPH11281286A (ja) * 1998-03-26 1999-10-15 Showa Alum Corp 熱交換器
JPH11325789A (ja) * 1998-05-07 1999-11-26 Calsonic Corp 熱交換器用タンクおよびその製造方法
JP2002181486A (ja) * 2000-12-15 2002-06-26 Denso Corp 熱交換器
US7229103B2 (en) * 2002-06-25 2007-06-12 T. Rad Co., Ltd Heat exchanger tank-pipe connection structure
JP2004219027A (ja) * 2003-01-17 2004-08-05 Denso Corp コンデンサにおけるコネクタの取付構造
JP2004347210A (ja) * 2003-05-21 2004-12-09 Calsonic Kansei Corp 熱交換器の配管接続構造
US20050034847A1 (en) * 2003-08-11 2005-02-17 Robert Graham Monolithic tube sheet and method of manufacture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1482046A (fr) * 1966-03-07 1967-05-26 Rubanox Soc Procédé pour la réalisation d'une jonction entre un circuit tubulaire intégré et un tuyau extérieur, notamment pour échangeur thermique tel qu'évaporateur ou condenseur pour appareil frigorifique
GB2048130A (en) * 1979-05-01 1980-12-10 Borg Warner Method for reinforcing heat exchanger tube to header joints
US4813112A (en) * 1982-04-16 1989-03-21 Societe Anonyme Des Usines Chausson Method for reinforcing by means of small plates at least end rows of tubes engaged into tube end plates for constituting a heat exchanger
DE29609073U1 (de) * 1995-05-15 1996-07-04 Vaillant Joh Gmbh & Co Verbindung eines Wärmetauscherrohres mit einer Wand eines Heizschachtes
JPH09136160A (ja) * 1995-11-10 1997-05-27 Mitsubishi Heavy Ind Ltd 熱交換器の端板と偏平管とのシール溶接方法
EP1426723A1 (de) * 2002-11-29 2004-06-09 Calsonic Kansei Corporation Wärmeaustauscher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 09 30 September 1997 (1997-09-30) *

Also Published As

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US20060108096A1 (en) 2006-05-25
JP2006112759A (ja) 2006-04-27

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