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1. WO1999008060 - TUBE FOR HEAT EXCHANGERS AND METHOD OF MANUFACTURING SAME

Publication Number WO/1999/008060
Publication Date 18.02.1999
International Application No. PCT/JP1998/003513
International Filing Date 06.08.1998
Chapter 2 Demand Filed 26.02.1999
IPC
F28D 1/03 2006.1
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
CPC
F28D 1/0391
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
0391a single plate being bent to form one or more conduits
Y10T 29/49384
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
49377Tube with heat transfer means
49378Finned tube
49384Internally finned
Y10T 29/49391
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
49391Tube making or reforming
Applicants
  • ZEXEL CORPORATION [JP]/[JP] (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, KR, LU, MC, NL, PT, SE)
  • KATO, Soichi [JP]/[JP] (UsOnly)
  • SAKURADA, Muneo [JP]/[JP] (UsOnly)
  • KURIHARA, Shin [JP]/[JP] (UsOnly)
  • HAIYA, Sadao [JP]/[JP] (UsOnly)
  • SUGITA, Takashi [JP]/[JP] (UsOnly)
  • AKIYAMA, Shoji [JP]/[JP] (UsOnly)
  • UMEHARA, Takahumi [JP]/[JP] (UsOnly)
Inventors
  • KATO, Soichi
  • SAKURADA, Muneo
  • KURIHARA, Shin
  • HAIYA, Sadao
  • SUGITA, Takashi
  • AKIYAMA, Shoji
  • UMEHARA, Takahumi
Agents
  • MORI, Masazumi
Priority Data
9/21488208.08.1997JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) TUBE FOR HEAT EXCHANGERS AND METHOD OF MANUFACTURING SAME
(FR) TUBE POUR ECHANGEURS THERMIQUES ET PROCEDE DE FABRICATION CORRESPONDANT
Abstract
(EN) A tube for heat exchangers, in which roll forming is used to form a bead compartmenting medium flow passages in a tube and a thickness (B) of the bead base is made larger than that of a stock plate for the tube. The roll forming comprises a first step of bending and forming the plate successively in a concave form to provide a planned bead portion as an intermediate formed bead portion, a second step of drawing the planned bead portion laterally, and a third step of compressing the planned bead portion after the second step in a bead heightwise direction. A width (w') of recesses of the planned bead portion (21a) in the first step is made larger than a width (w) of recesses of beads (21) after forming, and a height (h') of the planned bead portion (21b) after the second step is made larger than a height (h) of the bead (21) after forming. Accordingly, methods of manufacturing a heat exchanger tube, in which bases of beads are enhanced in pressure resisting property, and a heat exchanger tube, in which unevenness of the plate can be reduced when beads are formed, are obtained.
(FR) Cette invention se rapporte à un tube pour échangeurs thermiques dans lequel on forme par profilage dans un tube des passages pour écoulement d'un milieu, compartimentés par des côtes, de sorte que l'épaisseur de la base desdites côtes soit supérieure à celle de la plaque de matière utilisée pour le tube. Le profilage consiste, dans une première étape, à plier et à façonner la plaque de façon à lui donner une forme concave en des emplacements successifs et à former une partie prédéterminée dotée de côtes constituant une partie de côtes de forme intermédiaire, puis dans une seconde étape, à étirer latéralement la partie de côtes prédéterminée, et enfin, dans une troisième étape, à comprimer la partie de côtes prédéterminée suivant la direction verticale des côtes. On accroît la largeur (w') des évidements de la partie de côtes prédéterminée (21a) au cours de la première étape, de manière à la rendre supérieure à la largeur (w) des évidements des côtes (21) après le formage, et on accroît la hauteur (h') de la partie de côtes prédéterminée (21b) de manière à la rendre supérieure à la hauteur (h) des côtes (21) après formage. Cette invention se rapporte également à des procédés de fabrication d'un tube d'échangeur thermique, dans lequel les bases de côtes possèdent des caractéristiques améliorées de résistance à la pression, et d'un tube d'échangeur thermique dans lequel il est possible de réduire les irrégularités de la plaque lorsqu'on forme les côtes.
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