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1. WO1996002348 - FLAT TUBE BRAZING METHOD FOR LAMINATED HEAT EXCHANGERS

Publication Number WO/1996/002348
Publication Date 01.02.1996
International Application No. PCT/JP1995/001413
International Filing Date 17.04.1995
IPC
B23K 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
1Soldering, e.g. brazing, or unsoldering
F28D 1/03 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEAT STORAGE PLANTS OR APPARATUS IN GENERAL
1Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
02with the heat-exchange conduits immersed in the body of fluid
03with plate-like or laminated conduits
F28F 9/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
9Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
02Header boxes; End plates
04Arrangements for sealing elements into header boxes or end plates
16by permanent joints, e.g. by rolling
18by welding
CPC
B23K 1/0012
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
1Soldering, e.g. brazing, or unsoldering
0008specially adapted for particular articles or work
0012Brazing heat exchangers
B23K 2101/14
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
2101Articles made by soldering, welding or cutting
04Tubular or hollow articles
14Heat exchangers
F28D 1/0316
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
1Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
02with heat-exchange conduits immersed in the body of fluid
03with plate-like or laminated conduits
0308the conduits being formed by paired plates touching each other
0316Assemblies of conduits in parallel
F28F 9/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
9Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
02Header boxes; End plates
04Arrangements for sealing elements into header boxes or end plates
16by permanent joints, e.g. by rolling
18by welding
Y10T 29/49373
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
49Method of mechanical manufacture
4935Heat exchanger or boiler making
49373Tube joint and tube plate structure
Y10T 29/49393
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
49Method of mechanical manufacture
4935Heat exchanger or boiler making
49393with metallurgical bonding
Applicants
  • ZEXEL CORPORATION [JP/JP]; 6-7, Shibuya 3-chome Shibuya-ku Tokyo 150, JP (AllExceptUS)
  • KATO, Soichi [JP/JP]; JP (UsOnly)
Inventors
  • KATO, Soichi; JP
Agents
  • MORI, Masazumi; 9-10, Honcho 2-chome Nakano-ku Tokyo 164, JP
Priority Data
6/16659419.07.1994JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) FLAT TUBE BRAZING METHOD FOR LAMINATED HEAT EXCHANGERS
(FR) PROCEDE DE BRASAGE DE TUBES PLATS POUR ECHANGEURS THERMIQUES STRATIFIES
Abstract
(EN)
A flat tube brazing method for a laminated heat exchanger, having the steps of laminating a plurality of solder-clad flat tubes (2) via fins (3), inserting both end portions of a flat tube or at least one end portion thereof into a tube insert hole (5) of a header tank (4) and combining them, and unitarily brazing the end portion(s) of the flat tubes and tube insert hole together, characterized in that the width A of the tube insert holes is set greater than that B of the flat tubes, the laminated heat exchanger being placed laterally so that the widthwise axes of the flat tubes extend vertically, and supported by a jig (19) so that a clearance (20) is formed in the portion of the tube insert holes which are below the lower portions of the flat tubes, at the time of the unitary brazing of the combined flat tubes. Owing to this method, the inserting of the flat tubes into the holes at the time of combining thereof is done reliably, and the brazing performance of the tube insert holes and flat tubes can be improved. The brazing of beads is also done reliably, so that a laminated heat exchanger in which the pressure resistance is secured is obtained.
(FR)
L'invention concerne un procédé de brasage de tubes plats pour un échangeur thermique stratifié, consistant à stratifier, avec des ailettes (3), une pluralité de tubes plats (2) brasurés, à introduire les deux parties terminales d'un tube plat ou au moins une partie teminale de celui-ci dans un orifice d'introduction de tube (5) d'un collecteur (4) en les appariant, et à braser unitairement et conjointement la ou les parties terminales des tubes plats ainsi que l'orifice d'introduction de tube. Ce procédé est caractérisé en ce que la largeur A des orifices d'introduction de tube est supérieure à la largeur B des tubes plats, l'échangeur thermique stratifié étant placé latéralement de sorte que les axes transversaux des tubes plats s'étendent verticalement, et étant supporté par un bâti (19) de manière à former un dégagement (20) dans la partie des orifices d'introduction de tube qui sont situés au-dessous des parties inférieures des tubes plats, lors du brasage unitaire des tubes plats appariés. Ce procédé permet une introduction fiable des tubes plats dans les orifices lors de leur appariement, ainsi qu'une amélioration de l'efficacité de brasage des orifices d'introduction de tube et des tubes plats. Le brasage des nervures s'effectue également de manière fiable, ce qui permet d'obtenir un échangeur thermique stratifié dans lequel la résistance à la pression est garantie.
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