WO1993013377A1 - Echangeur de chaleur a plaques soudees et procede de fabrication de modules de plaques permettant l'obtention de tels echangeurs - Google Patents
Echangeur de chaleur a plaques soudees et procede de fabrication de modules de plaques permettant l'obtention de tels echangeurs Download PDFInfo
- Publication number
- WO1993013377A1 WO1993013377A1 PCT/FR1992/001232 FR9201232W WO9313377A1 WO 1993013377 A1 WO1993013377 A1 WO 1993013377A1 FR 9201232 W FR9201232 W FR 9201232W WO 9313377 A1 WO9313377 A1 WO 9313377A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plates
- modules
- exchanger
- fluid
- transverse
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
- B21D53/045—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal by inflating partially united plates
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0006—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the plate-like or laminated conduits being enclosed within a pressure vessel
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
- F28F3/14—Elements constructed in the shape of a hollow panel, e.g. with channels by separating portions of a pair of joined sheets to form channels, e.g. by inflation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/10—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes made by hydroforming
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
- F28F2275/067—Fastening; Joining by welding by laser welding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49366—Sheet joined to sheet
- Y10T29/49369—Utilizing bond inhibiting material
- Y10T29/49371—Utilizing bond inhibiting material with subsequent fluid expansion
Definitions
- the present invention relates to the technical sector of plate heat exchangers and their various constituents.
- the heat exchangers developed to date can be classified into two main categories, namely: tubular exchangers and plate exchangers with joints or welded.
- Plate exchangers with seals consist of a stack of an appropriate number of profiled and ribbed plates which are clamped between two frames by means of tie rods. These plates have in their corners openings which delimit, in the stack, inlet and outlet passages for fluids. The alternation of the latter in the successive spaces defined between the plates is obtained by the use of profile joints and suitable shapes.
- These exchangers have good thermal performance with a small footprint, but their reliability is limited by the strength of the seals: nature, temperature and pressure of the product to be conveyed; moreover other factors, such as aging or others are likely to act on these joints.
- Welded plate heat exchangers take up the advantages of plate heat exchangers with seals, at a higher cost while eliminating the disadvantages of these. They nevertheless have several disadvantages of their own - and stem from their method of development and design, these disadvantages are recognized and recognized by the manufacturers.
- a first drawback lies in the fact that the plates are produced by stamping, which gives residual stresses or tensions following the method of obtaining to obtain the profile of the plates.
- a second drawback lies in the appearance of crevices which are observed, on the one hand, at the level of the connection of the plates between them constituting the bundle and, on the other hand, of the manifolds for fluids with this bundle.
- FIG. 3 shows the deformation obtained by pressure. It is noted that this in the exchanger accentuates the crevices (4) inherent in the manufacturing method used, first it is formed, then it is welded, and thus facilitates the stagnation of products such as chlorides in water. Consequently, there is stagnation and concentration of the latter in these crevices, then corrosion which may ultimately lead to the destruction of stainless steel appliances.
- a third drawback of plate heat exchangers lies in the expansion constraints.
- the pressure resistance of the device is constituted by a frame or box provided with a door
- the bundle is at its upper and lower ends at very different temperatures; thus, the frame is also subjected to beam-like temperatures but different due to its thickness. Due to temperature differences, the plates all expand differently, and the frame or box is gradually deformed giving an ideal troncopyra appearance. Therefore, the beam is energized as a result of these temperature differences, which causes additional constraints to those inherent in the manufacturing method (stamping).
- the parallelepipedic device is a self-resisting beam and only two thick external plates form a structure taking up the pressure forces
- the design of the beam which has two external walls, which are an integral part of the two self-resisting end chambers, and which they do not fully participate in the exchange surface are therefore at temperatures different from all the other plates constituting the bundle, "because in no case are the contact points sufficient to ensure temperature uniformity between the walls constituting these end chambers, the coefficient of heat transfer by convection being generally higher than that by conduction ", therefore significant constraints in these two end chambers. At the connection by welding them with the other chambers and manifolds, these constraints can cause breakage or leakage
- a fourth drawback of heat exchangers with welded plates lies in the fact that they are not 100% radiographable. There are access parts which are impossible to control, in particular as regards the assembly of the plate bundle on the frame, these areas being inaccessible to current means of control.
- the aim sought after according to the present invention was therefore to remedy the drawbacks noted of tubular exchangers and exchangers with welded plates.
- the goal is to design a heat exchanger having the performance of heat exchangers. welded plates, with the same compactness, and offering the reliability of the tubular exchanger.
- Another object is to co ⁇ i conference an exchanger which does not generate constraints as a result of its manufacturing method.
- Another aim is to design an exchanger which can be entirely radiographed with total accessibility for inspection.
- Another object is to design an exchanger eliminating all zones of crevices between its plates or between the plates and the frame.
- Another object is to design an exchanger offering great ease of cleaning on one of its circuits, and also supporting, without particular difficulty, significant pressures.
- the heat exchanger with welded plates is remarkable in that it comprises and in particular receives a bundle of several modules consisting of two plates, said plates being connected together by connection zones obtained by welding with laser and being shaped by hydroforming, said plates having their transverse ends folded down and emerging by defining between them a longitudinal interior cavity constituting a first conduit for circulation of a fluid A, said modules being associated with one another by connection of the ends folded back facing plates thus defining in a transverse plane a second circuit of a fluid B.
- different modules of two plates are produced to constitute a bundle of modules intended to be inserted into the body of an exchanger, the method consisting in producing each module from two plates which are previously linked together by connecting zones defined along their periphery and at certain interior points, in a next phase to shape the two plates by hydroforming, after shaping an interior cavity, in a next phase to cut the transverse ends of the constituent plates of the module in order to define a direction of circulation of a first fluid, then to shape said transverse ends of the plates of each module to allow after placing side by side of the adjacent modules the connection of the ends of the plates together to constitute a second passage circuit of a fluid.
- Figures 1, 2 and 3 are schematic views illustrating the bonding zones by welding of the welded plate heat exchangers, and highlighting their crevices.
- Figure 4 is a schematic view illustrating the principle of the method of manufacturing the heat exchanger plates and the heat exchanger consisting of such plates according to the invention.
- Figure 5 is a schematic view showing the formation of connecting zones of two plates of the exchanger constituting a module.
- FIG. 6 shows the shaping of the two plates between them constituting a module, in order to define a fluid circulation conduit.
- Figure 7 is a schematic view showing the shaping with transverse cutting of one of the ends of the module.
- Figure 8 is a front view of a plate module before shaping its ends.
- Figure 9 is a schematic view of the module according to Figure 7 with inversion of the ends of the facing plates.
- Figure 10 is a view illustrating the assembly of several plate modules together.
- Figure 11 is a top view illustrating the connection of two modules together.
- FIG. 12 is a sectional view of an exchanger arranged with plate modules according to the invention.
- FIG. 13 is a cross-sectional view along the line AA in FIG. 12.
- Figure 14 is an exterior view of a plate heat exchanger according to the invention.
- the known technique consisted in principle in shaping the plates of the exchanger and then carrying out their welding in appropriate zones.
- the originality of the invention lies in the fact that the plates (5 - 6) which are capable of being integrated into the exchanger are linked together beforehand to define a module (M), then then they are put in place shaped to define fluid circulation channels.
- the process for manufacturing the exchange plates and the exchanger made up of these consists of the following phases: Plates (5 - 6) of rectangular section of dimensions are produced suitable and made of metallic material.
- connection zones (7) between the two plates in a configuration judiciously studied to respond to a plate profile taking into account thermal, hydraulic and pressure resistance problems, said zones defining connection lines. (7.1), or points (7.2) connecting the plates together.
- connection is made over the entire periphery of the two plates and of the protruding heel (8) constituting a module, which becomes watertight by having previously introduced a leaflet (9 ) which will allow the entry of the forming fluid ( Figure 5).
- the next phase consists in introducing, by the brochure, a pressurized fluid (air, oil, water, etc.) capable of causing, by hydroforming, the deformation of the plates between them which remain maintained and linked by laser welds on their periphery and in different appropriate places.
- a pressurized fluid air, oil, water, etc.
- the next phase (figure 7) then consists in removing and-r- detaching the heel (8) containing the booklet (9), by recovering it, on the one hand, and, on the other hand, (figure 8 ) to cut each of the transverse ends of the plates according to a suitable cut which then makes it possible to obtain a circular profile in the form of a sector C which can be seen in FIG. 10, then separate the two plates at the four corners.
- the next phase illustrated in FIG. 9 consists in folding the two ends (5.2 - 6.2) of the plates (5 - 6) constituting the module to a horizontal position substantially square with respect to the longitudinal plane of the plates. This shows transverse bands which, after leveling the edges (5.3 6 6.3), will allow the modules (M) to be assembled together, at butt welds, as shown in Figure 10. This determines the second circuit for the passage of the exchanger fluid referenced by the letter
- FIG. 12 There is shown in Figures 12, 13 and 14, the introduction of different modules (M) of plates object of the invention inside a heat exchanger.
- the latter comprises a longitudinal body (11) of ... great length, made of all weldable materials, in one or more parts, capable of being held in position relative to support planes, by clamping ring (15) Or other. At each of its ends, the body receives hats
- the fluid (A) crosses the heat exchanger longitudinally through the conduits formed on the caps and passing longitudinally through the various modules.
- the fluid (B) is collected by nozzles (14) then directing it into the peripheral inner chamber of the two caps by crossing, in a transverse plane then longitudinally, the different modules in the plane indicated according to the figure 10, the two circuits being perfectly against the current.
- This exchanger finds many applications such as, but not limited to, petrochemicals.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5511496A JPH06506054A (ja) | 1991-12-23 | 1992-12-23 | 溶接された板状フィン型熱交換器及び熱交換器用板状フィンの製造方法 |
US08/107,726 US5494100A (en) | 1991-12-23 | 1992-12-23 | Welded plate fin heat exchanger and heat exchanger plate fin manufacturing process |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9116423A FR2685462B1 (fr) | 1991-12-23 | 1991-12-23 | Echangeur de chaleur a plaques soudees et procede de fabrication de modules de plaques permettant l'obtention de tels echangeurs. |
FR91/16423 | 1991-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993013377A1 true WO1993013377A1 (fr) | 1993-07-08 |
Family
ID=9420744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1992/001232 WO1993013377A1 (fr) | 1991-12-23 | 1992-12-23 | Echangeur de chaleur a plaques soudees et procede de fabrication de modules de plaques permettant l'obtention de tels echangeurs |
Country Status (6)
Country | Link |
---|---|
US (1) | US5494100A (fr) |
EP (1) | EP0572652A1 (fr) |
JP (1) | JPH06506054A (fr) |
CA (1) | CA2103581A1 (fr) |
FR (1) | FR2685462B1 (fr) |
WO (1) | WO1993013377A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0694352A1 (fr) * | 1994-07-22 | 1996-01-31 | Stahlwerke Bremen GmbH | Procédé de fabrication de corps structuraux creux en tÔle |
NL1004321C2 (nl) * | 1996-10-21 | 1998-04-22 | Omega Laser Systems B V | Werkwijze voor het vervaardigen van een hol paneel en met die werkwijze vervaardigd paneel. |
WO1999067041A1 (fr) * | 1998-06-24 | 1999-12-29 | Alfa Laval Ab | Procede permettant d'assembler au moins quatre plaques de transfert de chaleur sur un ensemble de plaques et ensemble de plaques associe |
DE19944426A1 (de) * | 1999-09-16 | 2001-03-29 | Balcke Duerr Energietech Gmbh | Plattenwärmetauscher und Verdampfer |
US6289977B1 (en) | 1996-10-11 | 2001-09-18 | Ziepack | Heat exchanger, and heat exchanging beam, and related welding methods and production |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9314040U1 (de) | 1993-09-16 | 1993-11-25 | Zehnder Verkaufs- und Verwaltungs AG, Gränichen | Rohrradiator |
BE1009337A3 (fr) * | 1995-04-12 | 1997-02-04 | Hamon Lummus Bv | Aerocondenseur a tube plat. |
FR2764973B1 (fr) * | 1997-06-24 | 1999-09-17 | Packinox Sa | Procede d'assemblage des plaques d'un faisceau de plaques et faisceau de plaques realise par un tel procede |
GB9719199D0 (en) * | 1997-09-10 | 1997-11-12 | Advanced Design & Mfg Ltd | Heat recovering ventilator system |
DE19800230C2 (de) * | 1998-01-07 | 2000-01-13 | Delta Radiatoren Gmbh | Heizkörper, insbesondere Röhrenradiator |
FR2785669B1 (fr) * | 1998-11-10 | 2001-01-26 | Framatome Sa | Echangeur thermique a plaques |
IT1307038B1 (it) * | 1999-04-14 | 2001-10-23 | Istituto Rtm S P A | Metodo per la fabbricazione di strutture cellulari in compositi dilamiere metalliche e strutture cellulari realizzate secondo tale |
US6615471B2 (en) | 2001-02-12 | 2003-09-09 | Solar Turbines Inc | Method of locating the blade holders in a fin folding machine |
US6408941B1 (en) | 2001-06-29 | 2002-06-25 | Thermal Corp. | Folded fin plate heat-exchanger |
US6904961B2 (en) * | 2003-01-07 | 2005-06-14 | Honeywell International, Inc. | Prime surface gas cooler for high temperature and method for manufacture |
US7017655B2 (en) | 2003-12-18 | 2006-03-28 | Modine Manufacturing Co. | Forced fluid heat sink |
CN100445651C (zh) * | 2004-02-25 | 2008-12-24 | 广州番禺速能冷暖设备有限公司 | 可变频调节工作容量的模块化组合制冷装置 |
JP2007162974A (ja) * | 2005-12-09 | 2007-06-28 | Xenesys Inc | 熱交換用プレート |
JP2009063223A (ja) * | 2007-09-06 | 2009-03-26 | Denso Corp | 熱交換器 |
NL2003983C2 (en) | 2009-12-18 | 2011-06-21 | Mircea Dinulescu | Plate type heat exchanger and method of manufacturing heat exchanger plate. |
JP5733900B2 (ja) * | 2010-02-26 | 2015-06-10 | 三菱電機株式会社 | プレート式熱交換器の製造方法及びプレート式熱交換器 |
WO2011148216A1 (fr) * | 2010-05-26 | 2011-12-01 | Mircea Dinulescu | Échangeur de chaleur à plaques |
JP5505268B2 (ja) * | 2010-11-10 | 2014-05-28 | トヨタ自動車株式会社 | 冷却管、シリンダヘッド、及び、冷却管の製造方法 |
JP5090515B2 (ja) | 2010-11-29 | 2012-12-05 | 株式会社タクボ精機製作所 | 熱交換器 |
FR2990148B1 (fr) * | 2012-05-03 | 2014-11-14 | Ferri Jean Noel Fernandez | Echangeur a plaques soudees matelassees et nouvelles plaques permettant leur realisation |
DE102012011936A1 (de) * | 2012-06-18 | 2013-12-19 | Api Schmidt-Bretten Gmbh & Co. Kg | Plattenwärmeübertrager |
DK177774B1 (en) * | 2013-04-11 | 2014-06-23 | Spx Flow Technology Danmark As | HYGIENIC HEAT EXCHANGE AND METHOD FOR PREPARING A HYGIENIC HEAT EXCHANGE |
JP5722394B2 (ja) | 2013-07-11 | 2015-05-20 | 株式会社タクボ精機製作所 | 熱交換器 |
DE102016100182A1 (de) * | 2016-01-05 | 2017-07-06 | Deg Engineering Gmbh | Reaktor oder Wärmeübertrager |
FR3079606B1 (fr) * | 2018-03-30 | 2020-07-17 | Groupe H Labbe | Procede d'assemblage d'un echangeur thermique |
CN113167552A (zh) | 2018-09-27 | 2021-07-23 | 阿瑟科工程有限公司 | 热交换器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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FR1443029A (fr) * | 1965-08-17 | 1966-06-17 | Texas Instruments Inc | Procédé pour la fabrication de produits métalliques gonflés et produits obtenus par le procédé |
FR1561819A (fr) * | 1967-05-08 | 1969-03-28 | ||
FR2204788A1 (en) * | 1972-10-30 | 1974-05-24 | Tranter Mfg Inc | Plate heat exchanger unit - made from two flat plates spot welded together in rhombus pattern |
EP0186592A1 (fr) * | 1984-12-21 | 1986-07-02 | BARRIQUAND, Société dite: | Echangeur à plaques |
Family Cites Families (7)
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US2456455A (en) * | 1944-10-17 | 1948-12-14 | Servel Inc | Heat exchanger |
US2690002A (en) * | 1949-11-18 | 1954-09-28 | Olin Ind Inc | Method of making hollow sheet metal fabrications having a plurality of interconnected passageways |
FR1143037A (fr) * | 1954-09-10 | 1957-09-25 | Henschel & Sohn Gmbh | échangeur de chaleur à contre-courant pour turbines à gaz |
US2941787A (en) * | 1956-04-13 | 1960-06-21 | Pedar Ltd | Apparatus for heat exchange |
US3129756A (en) * | 1959-06-30 | 1964-04-21 | Ramen Torsten | Tube elements |
JPS58128236A (ja) * | 1982-01-26 | 1983-07-30 | Riken Corp | 集熱器の製造方法 |
GB9012618D0 (en) * | 1990-06-06 | 1990-07-25 | Rolls Royce Plc | Heat exchangers |
-
1991
- 1991-12-23 FR FR9116423A patent/FR2685462B1/fr not_active Expired - Lifetime
-
1992
- 1992-12-23 WO PCT/FR1992/001232 patent/WO1993013377A1/fr not_active Application Discontinuation
- 1992-12-23 CA CA002103581A patent/CA2103581A1/fr not_active Abandoned
- 1992-12-23 US US08/107,726 patent/US5494100A/en not_active Expired - Fee Related
- 1992-12-23 JP JP5511496A patent/JPH06506054A/ja active Pending
- 1992-12-23 EP EP93902374A patent/EP0572652A1/fr not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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FR1443029A (fr) * | 1965-08-17 | 1966-06-17 | Texas Instruments Inc | Procédé pour la fabrication de produits métalliques gonflés et produits obtenus par le procédé |
FR1561819A (fr) * | 1967-05-08 | 1969-03-28 | ||
FR2204788A1 (en) * | 1972-10-30 | 1974-05-24 | Tranter Mfg Inc | Plate heat exchanger unit - made from two flat plates spot welded together in rhombus pattern |
EP0186592A1 (fr) * | 1984-12-21 | 1986-07-02 | BARRIQUAND, Société dite: | Echangeur à plaques |
Non-Patent Citations (2)
Title |
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NTIS TECH NOTES. no. 9, Septembre 1984, SPRINGFIELD, VA US 'computer-controlled laser welding' * |
PATENT ABSTRACTS OF JAPAN vol. 7, no. 240 (M-251)(1385) 25 Octobre 1983 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0694352A1 (fr) * | 1994-07-22 | 1996-01-31 | Stahlwerke Bremen GmbH | Procédé de fabrication de corps structuraux creux en tÔle |
US6289977B1 (en) | 1996-10-11 | 2001-09-18 | Ziepack | Heat exchanger, and heat exchanging beam, and related welding methods and production |
NL1004321C2 (nl) * | 1996-10-21 | 1998-04-22 | Omega Laser Systems B V | Werkwijze voor het vervaardigen van een hol paneel en met die werkwijze vervaardigd paneel. |
WO1999067041A1 (fr) * | 1998-06-24 | 1999-12-29 | Alfa Laval Ab | Procede permettant d'assembler au moins quatre plaques de transfert de chaleur sur un ensemble de plaques et ensemble de plaques associe |
US6397940B1 (en) | 1998-06-24 | 2002-06-04 | Alfa Laval Ab | Method of joining at least four heat transfer plates to a plate package, and a plate package |
DE19944426A1 (de) * | 1999-09-16 | 2001-03-29 | Balcke Duerr Energietech Gmbh | Plattenwärmetauscher und Verdampfer |
DE19944426C2 (de) * | 1999-09-16 | 2003-01-09 | Balcke Duerr Energietech Gmbh | Plattenwärmetauscher und Verdampfer |
Also Published As
Publication number | Publication date |
---|---|
CA2103581A1 (fr) | 1993-06-24 |
US5494100A (en) | 1996-02-27 |
FR2685462B1 (fr) | 1999-02-05 |
EP0572652A1 (fr) | 1993-12-08 |
FR2685462A1 (fr) | 1993-06-25 |
JPH06506054A (ja) | 1994-07-07 |
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