EP0035078B1 - Procédé pour la fabrication d'échangeurs de chaleur à ailettes - Google Patents

Procédé pour la fabrication d'échangeurs de chaleur à ailettes Download PDF

Info

Publication number
EP0035078B1
EP0035078B1 EP80300655A EP80300655A EP0035078B1 EP 0035078 B1 EP0035078 B1 EP 0035078B1 EP 80300655 A EP80300655 A EP 80300655A EP 80300655 A EP80300655 A EP 80300655A EP 0035078 B1 EP0035078 B1 EP 0035078B1
Authority
EP
European Patent Office
Prior art keywords
plates
fins
heat
fin
plate
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.)
Expired
Application number
EP80300655A
Other languages
German (de)
English (en)
Other versions
EP0035078A2 (fr
EP0035078A3 (en
Inventor
Pál Gál
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.)
Licencia Talalmanyokat Ertekesitoe Es Innovacios K
Original Assignee
Licencia Talalmanyokat Ertekesito Es Innovacios Kuelkereskedelmi Vallalat
Licencia Talalmanyokat Ertekesito Vallalat
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 Licencia Talalmanyokat Ertekesito Es Innovacios Kuelkereskedelmi Vallalat, Licencia Talalmanyokat Ertekesito Vallalat filed Critical Licencia Talalmanyokat Ertekesito Es Innovacios Kuelkereskedelmi Vallalat
Priority to DE8080300655T priority Critical patent/DE3072155D1/de
Priority to EP80300655A priority patent/EP0035078B1/fr
Priority to AT80300655T priority patent/ATE43709T1/de
Publication of EP0035078A2 publication Critical patent/EP0035078A2/fr
Publication of EP0035078A3 publication Critical patent/EP0035078A3/en
Application granted granted Critical
Publication of EP0035078B1 publication Critical patent/EP0035078B1/fr
Expired legal-status Critical Current

Links

Images

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
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • 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
    • F28D1/00—Heat-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
    • F28D1/02—Heat-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 with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-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 with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-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 with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-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 with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • 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
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives

Definitions

  • the invention concerns a process for manufacturing finned heat-exchangers.
  • One particular application of the process is the fabrication of radiators of internal combustion engines for road vehicles.
  • aluminium would be a desirable material to use owing to its relative cheapness and good thermal conductivity but the fabrication of finned heat exchangers made of aluminium has proved problematic. Thin aluminium plates are difficult to spot weld without causing electrode burns while the use of adhesive resins has proved unsatisfactory in motor car radiators because of the exposure of such resin bonds to the combined effect of relatively high temperatures and mechanical loads, such as vibration as well as the formation of so-called heat dams by the resin material, impeding heat transfer.
  • GB-A-1,273,141 discloses a heat exchanger in which pairs of pre-formed metal sheets are roll-bonded together to define liquid flow passages (tubes). Corrugated metallic foil strips are then bonded directly with metal-to-metal contact to the outer walls of the liquid flow passages. The thus finned tube is then secured "backto back" to a like finned tube by epoxy resin adhesive bonding between those adjacent end portion of the strip fins which are remote from the tubes.
  • This disclosure suffers from the already- mentioned disadvantage flowing from the use of adhesives; moreover, closely spaced fins (“microfins”) cannot be fabricated in this way since conventional pressure rollers required to effect bonding of the strip fins to the liquid carrying tubes are too large to reach the sites of bonding.
  • US-A-3,650,005 discloses an improvement in the use of the so-called stop weld technique (itself disclosed in US-A-2,690,002) of fabricating heat exchanger tubes from aluminium sheets, in which, after a pair of sheets carrying a predetermined pattern of stop weld material have been hot-rolled together, the portion which was not bonded together by the effect of the stop weld material is deformed from inside to a tubular form by the use of high-pressure water.
  • This disclosure is essentially limited to the formation of the liquid-carrying tubes and does not address itself at all to the problem of securing fins to such tubes.
  • US-A-3,712,372 discloses the fabrication of heat exchangers utilising the stop weld technique in combination with a hydraulic "inflation" technique for deforming the non-bonded parts of adjacent sheets into tubular form.
  • the tubes are placed in a frame and portions thereof are flattened by special flattening rollers. Thereafter, flat fins are brazed or soldered to these flattened portions. The assembly is then bent into a serpentine form.
  • This disclosure complicates the manufacture of finned heat exchanger tubes by requiring special machinery for flattening selected portions of the tubes and by requiring a separate step of brazing or soldering the roots of fins to the tubes while omitting any teaching of how to secure fin tips to an adjacent tube or tube portion.
  • the present invention seeks to solve the problems of making finned heat-echangers in which both ends of the fins are to be secured, of enabling fins of widely varying spacing and geometry to be used and of simplifying manufacturing by combining fabrication with pressure testing.
  • the heat-exchanger elements are assembled and retained in a frame and the tubular passages are expanded by test-pressings or a separately performed pressing and the directly heat-transmitting surfaces are brought into close adhesive connection.
  • the invention breaks with hitherto known technologies and enables the manufacture of strip finned heat-exchanging elements in a completely novel manner by connecting the strip fins with the cooling tubes or cooling passages by a direct bond.
  • FIG. 1 there is shown a fragmentary heat exchanger wherein the tubular passages 3 are formed from plates which have been welded together and wherein the strip-shaped fins 1 are fixed thereto by securing together a flat side 2a, 2b of the tubular passage 3 and the outer faces 1a, 1b of the strip fins 1.
  • Figure 2 illustrates by an arrow I the direction of flow of the heating or cooling medium while the arrow designated by II indicates the direction of flow of air.
  • the tubular passages 3 it is expedient to place one of the welding electrodes 5 which is provided with a water channel and which is therefore water-cooled, inside the full length of the tubular passage 3.
  • the welding electrode 5 then not only serves to weld the fins 1 to the tubular passages 3 but also serves to ensure that the tubular passage does not collapse during the formation and welding of the strip-like fins.
  • the electrode 5 may be removed.
  • Figure 3 shows the welding seam 4 at the root of the fin 1. This particular solution can only be used for U-shaped tubular passages.
  • FIG. 5 shows an embodiment wherein thin strip-fins 1 are connected to the surface of the plate 2 at several locations.
  • the connection between the fins and the plates may according to Figure 6 be effected by ultra-sonic welding or, as shown in Figure 7, where the material of the strip fins is thicker, and the pitch of the fins is smaller, by spot welding. This is also shown in Figure 8.
  • Figure 9 shows a forced-flow heat-exchanger portion wherein the strip fins 1, the welded sheets 2 and tubular passages 3 are connected in series and in parallel in accordance with the well-known criteria of heat-transfer technology.
  • the outer faces 1a of the strip fins 1 are welded at locations 4a to plates disposed at the edges of tubular passages and between such passages.
  • the plurality of fin rows welded to the plate 2 form a finned heat exchanger element.
  • Several completed heat exchanger elements may be assembled together by offsetting one of the rows with the aid of the strip fins and placing it on the adjacent row while the third row is aligned with the first row of such elements. From the point of view of manufacturing technology, it is expedient to form one inlet and one outlet. In this way, each individual heat-exchanging element in effect forms a closed system with only a minimal risk of faults and leaks.
  • the heat-exchanger elements to be assembled together are of one piece.
  • the diagram or plan of the individual or tubular passages of the heat exchangers together with their connecting ducts, are continuously applied to the plates 2, with a suitable offset, and then after rolling, expanding and finning, the individual heat-exchangers are bent forwards and backwards and laid upon each other.
  • the heat-exchanger formed in this way is thereafter processed or handled as described above.
  • the figure does not show the inlets and outlets which can be formed in any suitable manner by welding a cylindrical tube into the tubular passages 3.
  • Another expedient solution may lie in welding-in or closing the outlet opening of the tubular passages, and by resistance welding or inductance welding connecting eyes are welded at the appropriate locations of the tubular passages of the sheet 2. These eyes are then suitable for making further connections.
  • This solution is particulary advantageous where the sheet 2 is made from aluminium.
  • the heat-exchanger held in a frame is subjected to pressure tests.
  • the pressure test is of course a compulsory matter for all heat-exchangers.
  • the pressure test is not only a safety and reliability check but at the same time also forms the final or finishing technological phase of the assembly.
  • the tubular passages inevitably undergo a certain deformation and extension in the direction of the strip fins. This extension is sufficient to ensure that due to any manufacturing or assembling inaccuracies, any loose heat exchanging elements should be tensioned or come into tight engagement with a frame or with each other. In this way it can be ensured that the flat faces 2a of the tubular passages 3 should tightly engage the outer faces 1a of the strip fins 1 whereby to form a metallic contact therebetween which is suitable for good metallic heat transfer.
  • FIGS 10 to 12 illustrate a heat exchanger in the form of a motor vehicle radiator core.
  • the principle of construction of the strip fins 1 and the tubular passages 3, that is to say the basic characteristic of the heat-exchanger elements, is identical with the heat-exchangers shown in the above-described embodiments, although of course the constructional configuration and the heat flow connections are different.
  • the water chamber of the radiator core in the illustrated embodiment is of the twin-chamber type.
  • a double layer baffle plate 11 separates the hot water chamber 10a from the cooled or cold water chamber 10b.
  • Each individual cooling element 6 is connected by way of a tubular neck 12 to the water chamber 10 whereby to form a double passage 12a and 12b.
  • the water to be cooled flows through passage 12a into the cooling element 6. It then flows through the two tubular passages 3a, turns as it flows through tubular passage 3b flows back through the cooling passages 3c and having cooled down, discharges through the passage 12b into the cooled or cold water chamber 10b.
  • the mutually superposed cooling elements 6 are connected in parallel in accordance with the foregoing flow scheme.
  • the motor vehicle radiator described in the preceding paragraphs differs from hitherto known constructions.
  • the new construction has numerous advantages, for instance it is not necessary to solder a large number of pipes to the tube wall.
  • each tube is associated with two soldering operations for soldering into the tubular wall, while in the present invention one tube wall connection is associated with four tubular passages.
  • the tube wall 13 is expediently produced by deep-drawing, so that is should be unitary with the sides of the water chamber 13a. In this way a very simple water chamber configuration can be achieved because its one open side may be closed simply by a rimmed cover 14 which bears against the sides 14a of the water chamber 13a and is matched thereto.
  • the cooling elements 5 are superposed in the distribution according to the drawing and are placed in the frame 15a.
  • the connection openings 13c of the tubular wall 13 are aligned with the tube necks 12 onto which on assembly the tube walls 13 are fitted.
  • the tube wall 13 is fixed to the shoulders 15b of the frame 15a by spot-welding or line-welding.
  • the tube necks 12 are connected in a leakproof manner e.g. by brazing or by another expediently chosen method of welding, to the tube wall 13.
  • fusion adhesive bonding In the case where one utilises plate materials which are so thin that a high quality weld cannot be used at all, then it is expedient to use fusion adhesive bonding. This insulation is of neutral effect on heat transfer because it is in contact with only one side of the water chamber.
  • the cooling at the airside of the adhesive material disposed between the tube neck 12 and the opening 13c is also ensured because the air stream is at all times in contact with the surface 13b.
  • arrows I indicate the path of the coolant water while the arrows 11 indicate the direction of flow of the cooling air.
  • Figure 13 illustrates a complex industrial condenser or water cooler.
  • the strip fins 1 are disposed on the tubular passages 3 in agreement with the embodiment already shown in Figures 1 and 2 above but its plate 2 has more tubular passages 3.
  • the drawing does not show the end construction of the cooling elements 6 which may at one end be e.g. open with the tubular passages 3 coupled into the tubular wall while at its other element, it may e.g. be flattened and open as for instance is shown in Figures 10, 11, and 12 with regard to the tubular neck 12 of the motor vehicle radiator.
  • a slit fin 30 wherein before bending and welding a cutter cuts the strip at several places intermittently to produce openings or slits 30a.
  • FIG. 31 Another manner of construction is shown by the cut-away strip fin 31.
  • appropriately sized strips are cut intermittently at several loctions from the basic strip, to produce openings 31a.
  • the slit strip-fin 30 and the cut-away strip-fin 31 represent embodiments which for certain heat exchangers can produce a greater air side heat transfer. It is an advantage of this embodiment that the transmission tool can be operated synchronously with the fin forming apparatus so that this part operation does not require a separate working phase.
  • the embodiment shown in Figure 13 makes it possible to manufacture in a particularly simple manner the very large air coolers used in power stations, in the chemical industry etc. because the elements may be made in accordance with the technical requirements in any arbitrary length and width and can be finished to the required size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Catalysts (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Claims (3)

1. Un procédé de fabrication d'un échangeur de chaleur à ailettes, comprenant les étapes suivantes:
(i) on prépare un pluralité de paires de plaques (2)
(ii) on applique sur une première plaque de chacune desdites paires un matériau empêchant la soudure, selon une disposition prédéterminée,
(iii) on superpose à ladite première plaque une seconde plaque de chacune desdites paires et l'on assemble lesdites plaques par cylindrage à chaud pour former ladite paire de plaques (2),
(iv) on dilate les zones de ladite seconde paire de plaques (2) qui sont protégées par ledit matériau empêchant la soudure en appliquant une pression de fluide, de manière à former une pluralité de passages tubulaires (3, 3a, 3b) pour l'écoulement d'un fluide d'échange thermique,
(v) on fixe à l'aide d'une liaison de cohésion ou adhésive une pluralité d'ailettes (1; 30) par l'une de leurs extrémités sur les plaques (2), caractérisé en ce que:
A. l'on maintient rigidement l'autre extrémité de chaque ailette (1; 30) à proximité de la surface (22) d'une autre plaque (2) à laquelle elle doit être fixée de manière permanente, sans l'y fixer;
B. on remplit lesdits passages (3, 3a, 3b) d'écoulement avec du liquide à une pression permettant à la fois d'atteindre les pressions d'essai classiques et présentant une valeur telle qu'elle conduise à une liaison permanente par contact direct métal sur métal et déformation entre ladite autre extrémité de chaque ailette (1; 30) et ladite surface (2a) de ladite autre plaque (2).
2. Un procédé selon la revendication 1, caractérisé en ce que les ailettes (1; 30) sont repliées en forme par, et uniquement par, ladite application de la pression de liquide de manière à provoquer une déformation permanente.
3. Un procédé selon la revendication 1 ou 2, dans lequel l'échangeur de chaleur est formé d'aluminium, caractérisé en ce qu'on fixe l'extrémité précitée de chaque ailette (1; 30) auxdites plaques par soudure directe (4) sans utilisation d'aucun matériau étranger.
EP80300655A 1980-03-05 1980-03-05 Procédé pour la fabrication d'échangeurs de chaleur à ailettes Expired EP0035078B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8080300655T DE3072155D1 (en) 1980-03-05 1980-03-05 Process for manufacturing finned heat-exchangers
EP80300655A EP0035078B1 (fr) 1980-03-05 1980-03-05 Procédé pour la fabrication d'échangeurs de chaleur à ailettes
AT80300655T ATE43709T1 (de) 1980-03-05 1980-03-05 Verfahren zur herstellung von gerippten waermetauschern.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80300655A EP0035078B1 (fr) 1980-03-05 1980-03-05 Procédé pour la fabrication d'échangeurs de chaleur à ailettes

Publications (3)

Publication Number Publication Date
EP0035078A2 EP0035078A2 (fr) 1981-09-09
EP0035078A3 EP0035078A3 (en) 1982-06-09
EP0035078B1 true EP0035078B1 (fr) 1989-05-31

Family

ID=8187117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80300655A Expired EP0035078B1 (fr) 1980-03-05 1980-03-05 Procédé pour la fabrication d'échangeurs de chaleur à ailettes

Country Status (3)

Country Link
EP (1) EP0035078B1 (fr)
AT (1) ATE43709T1 (fr)
DE (1) DE3072155D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103128519B (zh) * 2013-03-14 2015-05-27 上海交通大学 微通道换热器制造方法和装置
CN103486772A (zh) * 2013-06-04 2014-01-01 浙江三可热交换系统有限公司 一种地铁列车空调微通道换热器的生产方法
CN111136194B (zh) * 2020-01-17 2024-07-26 东莞市合辉精密机械设备有限公司 铜片贴网机

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB810876A (en) * 1956-08-10 1959-03-25 Crompton Parkinson Ltd Improvements relating to electric arc welding of studs and similar bodies
FR1359712A (fr) * 1963-02-05 1964-04-30 Runtal Holding Co Sa Procédé et dispositif pour assembler les pièces d'un radiateur par soudage
GB1132526A (en) * 1966-04-15 1968-11-06 Inst Elektroswarki Patona Machine for making heat-exchange surfaces
GB1273141A (en) * 1968-02-13 1972-05-03 Glacier Co Ltd Heat exchanger and method of making it
US3650005A (en) * 1970-03-19 1972-03-21 Showa Aluminium Co Ltd Method for producing tube in sheets
US3712372A (en) * 1971-03-01 1973-01-23 Oilin Corp Method and apparatus for deforming a flat on parts of metal strip-type tubing while leaving other parts undeformed
US3764774A (en) * 1972-07-13 1973-10-09 R Boose I-type segmented finned tube and its method of manufacture
US4224984A (en) * 1974-03-20 1980-09-30 Sharp Kabushiki Kaisha Finned tube useful for heat exchangers
FR2354160A1 (fr) * 1976-06-08 1978-01-06 Chausson Usines Sa Procede pour la fabrication de sous-ensembles d'echangeurs de chaleur et echangeur en resultant

Also Published As

Publication number Publication date
DE3072155D1 (en) 1989-07-06
EP0035078A2 (fr) 1981-09-09
EP0035078A3 (en) 1982-06-09
ATE43709T1 (de) 1989-06-15

Similar Documents

Publication Publication Date Title
EP1158260B1 (fr) Echangeur de chaleur, procede de fabrication d'echangeur de chaleur, et procede de fabrication de tube pour echangeur de chaleur
US3702021A (en) Methods of making heat exchangers
US5295302A (en) Method of manufacturing an aluminum heat exchanger
EP0753128A1 (fr) Echangeur thermique modulaire en aluminium extrude
US20070000652A1 (en) Heat exchanger with dimpled tube surfaces
WO2008038948A1 (fr) Échangeur thermique d'automobile destiné à réunir la boîte à eau et le réservoir et son procédé de fabrication
US20050194124A1 (en) Heat exchanger, in particular oil cooler for a motor vehicle
US20070051499A1 (en) Semifinished flat tube, process for producing same, flat tube, heat exchanger comprising the flat tube and process for fabricating the heat exchanger
US7322403B2 (en) Heat exchanger with modified tube surface feature
US5761808A (en) Method of making a heat exchanger
CN103502761A (zh) 热交换器的制造方法和热交换器
EP1191298A2 (fr) Construction d'un échangeur de chaleur
US4601089A (en) Process for the manufacture of heat-exchanger elements of strip-finned heat-exchangers
US6269869B1 (en) Continuous corrugated heat exchanger and method of making same
EP0035078B1 (fr) Procédé pour la fabrication d'échangeurs de chaleur à ailettes
JPS6166091A (ja) 熱交換器用チユ−ブ材及び該チユ−ブ材による熱交換器コアの製造方法
US2998639A (en) Method of making heat exchangers
US2232562A (en) Method of making a heat exchanger
US20090145587A1 (en) Fin pack, heat exchanger, and method of producing same
US3702022A (en) Methods of making heat exchangers
EP1179719A2 (fr) Procédé de fabrication d'un tube d'échangeur de chaleur
US3688372A (en) The method of making a heat exchanger
JPH033160B2 (fr)
US20150068715A1 (en) Heat exchanger
JP2744815B2 (ja) 熱交換器用チューブの製造方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19820413

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LICENCIA TALALMANYOKAT ERTEKESITOE ES INNOVACIOS K

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

REF Corresponds to:

Ref document number: 43709

Country of ref document: AT

Date of ref document: 19890615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3072155

Country of ref document: DE

Date of ref document: 19890706

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19910531

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19911230

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920303

Year of fee payment: 13

Ref country code: AT

Payment date: 19920303

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19920305

Year of fee payment: 13

Ref country code: CH

Payment date: 19920305

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19920316

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19920318

Year of fee payment: 13

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920331

Year of fee payment: 13

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19921201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930305

Ref country code: GB

Effective date: 19930305

Ref country code: AT

Effective date: 19930305

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930306

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19930331

Ref country code: BE

Effective date: 19930331

BERE Be: lapsed

Owner name: LICENCIA TALALMANYOKAT ERTEKESITO ES INNOVACIOS K

Effective date: 19930331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19931001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930305

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19931130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 80300655.0

Effective date: 19931008