EP0319520B1 - Herstellungsverfahren eines Wärmetauschers - Google Patents

Herstellungsverfahren eines Wärmetauschers Download PDF

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Publication number
EP0319520B1
EP0319520B1 EP89101072A EP89101072A EP0319520B1 EP 0319520 B1 EP0319520 B1 EP 0319520B1 EP 89101072 A EP89101072 A EP 89101072A EP 89101072 A EP89101072 A EP 89101072A EP 0319520 B1 EP0319520 B1 EP 0319520B1
Authority
EP
European Patent Office
Prior art keywords
tube
tubes
strip
medium
heat exchanger
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 - Lifetime
Application number
EP89101072A
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English (en)
French (fr)
Other versions
EP0319520A1 (de
Inventor
Erik Kristian Stén
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.)
Blackstone Sweden AB
Original Assignee
Blackstone Sweden AB
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 Blackstone Sweden AB filed Critical Blackstone Sweden AB
Priority to AT89101072T priority Critical patent/ATE76184T1/de
Publication of EP0319520A1 publication Critical patent/EP0319520A1/de
Application granted granted Critical
Publication of EP0319520B1 publication Critical patent/EP0319520B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28D1/053—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 straight
    • F28D1/0535—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 straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more conduits
    • 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
    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • the invention relates to a method in the manufacture of a heat exchanger according to the preamble of claim 1.
  • a heat exchanger comprising a plastics tank and metal tubes as well as a method of making such a heat exchanger are disclosed by EP-A-0,000,189, according to which round tubes bent into U shape are connected with a tank having an inlet and an outlet chamber separated from each other such that a U-shaped flow is imparted to the cooling or heating medium within the heat exchanger.
  • the primary object of the invention is to provide a cheap and simple method for manufacturing a heat exchanger with flat tubes having a U-tube channel.
  • the present invention also aims at providing a method of making a heat exchanger having a higher temperature efficiency per m2 of heat exchanger surface, to establish communication between the tank and the heat transfer pile by, for example, gluing a tank made of injection moulded plastics to a heat transfer pile made of aluminium, and to provide a heat exchanger having a better seal between these components, lower weight, smaller dimensions and thus taking up less space.
  • the flat tubes give the advantage of a larger heat transfer surface, while simultaneously reducing the size of the heat exchanger for a given heat transfer capacity, an important advantage when such heat exchangers are used as vehicle coolers or heaters.
  • Fig. 1 is a perspective view of a heat exchanger, in which certain parts of the tank have been removed.
  • Fig. 2 is a perspective view of a tube comprised by the heat exchanger.
  • Fig. 3 is a section along line III-III in Fig. 2.
  • Fig. 4 is a top view of a perforated strip included in the fin unit of the heat exchanger.
  • Fig. 5 is a section along line VI-VI in Fig. 5.
  • Fig. 1 illustrates a heat exchanger 1 with a heat transfer pile 2 comprising on the one hand a plurality of tubes 3 for circulating a first medium, such as water, and on the other hand a plurality of fin units 4 which are arranged alternately with the tubes 3 and past which a second medium, such as air, is intended to flow.
  • the heat exchanger 1 can operate both as a heater and as a cooler.
  • the fin units 4 consist of a perforated and folded strip which is described below.
  • Each tube 3 has at one end an inlet 5 and an outlet 6 and is closed at its other end.
  • Each tube 3 has a partition in the form of a rod 7 which is inserted in the tube 3 and has its inner end located at a distance from the closed end of the tube, whereby a U channel for circulation of the water is formed.
  • the water thus enters at the inlet 5, flows through the U channel and is discharged through the outlet 6.
  • a tank 8 having an inlet chamber 9 and an outlet chamber 10 is connected to the open ends of the tubes 3, the tube inlet 5 communicating with the inlet chamber 9 and the tube outlet 6 communicating with the outlet chamber 10.
  • the water flows into the inlet chamber 10 of the tank 8 via an inlet piece 11 and then flows through the U channels of the tubes 3 and into the outlet chamber 10 of the tank 8, from which the water is finally discharged via an outlet piece 12 schematically illustrated in Fig.
  • the second medium is air which flows through the fin units 4 in the direction of the arrow A. If the heat exchanger is used as a cooler, the air flow cools the water in the tubes 3, and inversely the air flow is heated by the water when the heat exchanger is used as a heater, for example a car heater.
  • the specific flat shape of the tubes 3 provides a large heat transfer area which, together with the U shaped water flow path, gives an excellent exchange of heat.
  • the heat exchanger 1 has upper and lower plates 13 to stiffen the heat transfer pile 2.
  • the rear end wall 14 of the heat exchanger 1 consists of tube end portions 15 bent through about 90° when the tubes 3 are closed.
  • the tank 8 constitutes the front end wall.
  • Fig. 2 illustrates the construction of a tube 3.
  • the tube which preferably is made of aluminium, has a U channel with an inlet 5 and an outlet 6.
  • the end of the tube 3 is closed by bending the end portion 15 through about 90°, and the rod 7 is inserted to form a partition within the tube 3.
  • the outer end portion 16 of the rod 7 projects beyond the open tube end, i.e. past the inlet 5 and the outlet 6, while its inner end 17 is located at a distance from the closed tube end 15.
  • the tube 3 is flanged to provide a larger inlet and outlet area upon connection to the connecting pieces described below.
  • the flanging also serves to reduce the throttling which occurs at the junction between the tubes and the connecting pieces.
  • the outer side of the tube 3 has indentations 18 to provide discontinuities within the tube. These discontinuities produce a turbulent water flow and serve as guide means for the rod 7.
  • Fig. 3 illustrates a section of the tube 3 and clearly shows the flat tube shape.
  • the space of the tube 3 to the right of the rod 7 constitutes the inlet side of the U channel, while the left-hand space constitutes the tube outlet side.
  • the indentations 18 in the upper and lower sides of the tube 3 form internal ridges 19 and serve to produce a turbulent flow.
  • the ridges 19 preferably are slightly oblique and, together with the rod 7, form an arrow-head pattern (see Fig. 2).
  • the partition may be formed, instead of by the rod 7, by impressing from the flat sides of the tube 3 longitudinal ridges which are sealingly interconnected in a subsequent operation.
  • the ridge portion thus impressed has preferably the same extent in the tube 3 as the rod 7 (see Fig. 2).
  • Fig. 4 illustrates a strip 28 which preferably is made from aluminium and which, after folding, forms a fin unit 4 for the heat transfer pile 2.
  • the strip 28 has perforations in the form of first slits 29 and second slits 30.
  • the slits 29, 30 are punched from the strip 28 and widened by bending.
  • the first slits 29 are formed such that their openings are facing the openings of the second slits 30, as is best shown in Fig. 5.
  • the strip 28 provided with slits 29, 30 is folded, and the fin units 4 are then placed alternately between the tubes 3 in the heat transfer pile 2 of the heat exchanger 1.
  • the opposing slits 29, 30 will divide and split up the air flow in the heat transfer pile 2 and serve to break up a laminar boundary layer which, on a planar surface, would position itself as an insulation.
  • the heat exchanger 1 operates as follows.
  • the water to be cooled flows into the tank 8 via the inlet piece 11 and on through the U channels of the tubes 3 and leaves the tank 8 through the outlet piece 12.
  • the air flows in a zigzag-like manner through the heat transfer pile 2 comprising the tubes 3 and the fin units 4, and because of the above-mentioned slits 29, 30 the air is distributed through the entire pile 2 to ensure satisfactory heat exchange.
  • the ridges 19 in the tubes 3 promote turbulent flow of the water passing through the U channels of the tubes 3, whereby the heat exchange is further improved.
  • the heat exchanger 1 may be manufactured as follows. First a preplated strip blank is bent to form a tube, the longitudinal edges of the blank being joined together by welding or seaming. Before welding or seaming is effected, continuities are provided in the strip, and after the strip has been bent, these discontinuities will lie on the inner side of the strip. Also a strip band which has not been preplated may be employed, and plating may be effected for instance after bending by passing the strip through a solder bath prior to welding or seaming. After that, the bent strip is flattened and cut into tube blanks which are closed at one end by clenching. During the closing operation, the other end of the tube blank may be preliminarily flanged to fit the connecting pieces on the tank.
  • a partition is provided in the longitudinal direction of each tube blank, the inner end of the partition being arranged at a distance from the closed end portion of the tube blank to form a U-shaped flow channel. Then the closed end portions of the tube blanks are bent through an angle of about 90°, and the tubes 3 are now finished.
  • the fin units 4 are manufactured in a different and shorter production line.
  • the starting material of the fin units consists of a strip 28 which is punched to provide slits 29, 30 extending longitudinally of the strip 28 and forming lines of first and second slit areas extending transversely of the strip 28.
  • the slits 29, 30 are bent out of the band 28 (i.e. out of the plane of the drawing in Fig. 5), such that the openings of the slits 29 are directed against the openings of the slits 30.
  • the slitted strip 28 is folded alternately in one and the other direction along folding lines B and C to form an endless folded fin strip.
  • the length of the slits 29, 30 preferably is somewhat shorter than the width of the fin unit 4 between the tubes 3.
  • the folded fin strip is cut into lengths slightly shorter than the length of the tubes 3.
  • the tubes 3 and the fin units 4 formed by cutting the endless fin strip are now alternately stacked in a fixture and compressed with a predetermined force, such that the tube ends folded approximately through 90° will overlap one another in the heat transfer pile 2 formed by the stacking, and will form one end wall 14 of the pile 2.
  • a predetermined force such that the tube ends folded approximately through 90° will overlap one another in the heat transfer pile 2 formed by the stacking, and will form one end wall 14 of the pile 2.
  • the heat transfer pile stacked in the fixture is now inserted in a soldering oven, the temperature of which is gradually increased to establish a subpressure so that the plating previously applied to the tubes 3 and the plates 13 will melt and, through capillary action, seep into the narrow pockets between the plates and the fin units, between the tubes and the fin units, and between the tubes and the partitions thereof. In this manner, no oxidation will occur because of the subpressure prevailing in the oven.
  • the heat transfer pile 2 is then removed from the oven and allowed to cool.
  • the open ends of the tube 3 are flanged to obtain a form corresponding to the connecting pieces in the tank. If flanging has been carried out in this manner, a calibrating subsequent flanging is effected. After that, each tube in the heat transfer pile 2 is pressure-tested and then oven-aged for tempering.
  • the heat transfer pile 2 is combined with an injection-moulded tank preferably of plastics, adhesive being applied in the troughs 22 around the connecting pieces 20, 21, and the tube ends of the heat transfer pile are inserted into their respective adhesive troughs, the outer end portion 16 of the rods 7 being inserted in corresponding recesses 23.
  • the adhesive is then allowed to set to form a finished heat exchanger.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Heat Treatment Of Articles (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Liquid Developers In Electrophotography (AREA)

Claims (10)

1. Ein Verfahren zur Herstellung eines Wärmeaustauschers (1), betrieben durch ein erstes Medium und ein zweites Medium und enthaltend einen Behälter (8) mit einer Einlaufkammer (9) und einer Auslaufkammer (10) zur Aufnahme des ersten Mediums, sowie eine Wärmeübertragungsbatterie (2) mit Rohren (3) für die Umwälzung des genannten ersten Mediums, wobei die genannten Rohre (3) ein U-Profil mit Eintritt (5) für den Anschluß an die genannte Einlaufkammer (9) und einen Austritt (6) für den Anschluß an die genannte Auslaufkammer (10) besitzen, während die genannte Wärmeübertragungsbatterie (2) Rippeneinheiten (4) aufweist, die mit den genannten Rohren (3) abwechselnd angeordnet und zur Leitung des genannten zweiten Mediums durch die genannten Rohre geeignet sind, wobei das genannte Verfahren die stapelartige Anordnung der genannten Rohre und der genannten Rippeneinheiten zur Bildung der genannten Wärmeübertragungsbatterie einschließt, wodurch die genannten Rohre und die genannten Rippeneinheiten vorzugsweise durch ein Lötverfahren miteinander verbunden und die Wärmeübertragungsbatterie zur Bildung des genannten Wärmeaustauschers mit dem genannten Behälter verbunden sind, dadurch gekennzeichnet , daß jedes Rohr (3) dadurch gebildet wird, daß man einen Blechstreifen in Längsrichtung biegt und dessen Längskanten zusammenfügt, daß der gebogene Streifen abgeflacht und in Rohr-Rohlinge geschnitten ist, daß die zugeschnittenen Rohr-Rohlinge an einem Endteil (15) verschlossen werden und daß in Längsrichtung jedes Rohr-Rohlings zur Bildung des genannten Rohrs eine Trennwand (7) vorgesehen ist, während das Innenende (17) der genannten Trennwand in einem Abstand von dem verschlossenen Endteil des Rohr-Rohlings angebracht ist, so daß das genannte U-Profil entsteht.
2. Ein Verfahren nach Anspruch 1, dadurch gekennzeichnet , daß die Trennwand dadurch gebildet wird, daß man ein Längselement (7) in den Rohr-Rohling einsetzt, um damit in einem anschließenden Arbeitsgang eine dichte Verbindung herzustellen.
3. Ein Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der genannte Endteil dadurch gebildet wird, daß man zwei in den Rohr-Rohling eingepreßte Stege zusammenpreßt, wobei die genannten Stege in einem anschließenden Arbeitsgang dicht miteinander verbunden werden.
4. Ein Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet , daß im Streifen Unterbrechungen (19) vorgesehen sind, die nach dem Umbiegen des Rohr-Rohlings auf dessen Innenseite liegen.
5. Ein Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß der geschlossene Endteil jedes Rohr-Rohlings um etwa 90° in der Weise gebogen ist, daß die gebogenen Endteile (15) zusammen eine Abschlußwand (14) des Wärmeaustauschers (11) bilden.
6. Ein Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet , daß der gebogene Streifen, bevor seine Längskanten zusammengefügt werden, mit einem Lot plattiert wird.
7. Ein Verfahren nach Anspruch 6, dadurch gekennzeichnet , daß die Trennwand (7) während der Verbindung von Rohren und Rippeneinheiten in ihrer Lage verlötet wird.
8. Ein Verfahren nach Anspruch 7, dadurch gekennzeichnet , daß das Löten mit Unterdruck ausgeführt wird.
9. Ein Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet , daß der Streifen der Rippeneinheit mit Löchern versehen und in Längsrichtung zur Bildung der genannten Rippeneinheit (4) gefalzt ist.
10. Ein Verfahren nach Anspruch 9, dadurch gekennzeichnet , daß die genannten Löcher die Form von Schlitzen haben, die sich in Längsrichtung des genannten Streifens erstrecken, daß die genannten Schlitze in zwei Reihen angeordnet sind, deren Breite der Dicke der fertigen Rippeneinheit entspricht, und daß wenigstens eine Kante der genannten Schlitze aus der Ebene des Streifens herausgebogen ist.
EP89101072A 1985-06-18 1986-06-05 Herstellungsverfahren eines Wärmetauschers Expired - Lifetime EP0319520B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89101072T ATE76184T1 (de) 1985-06-18 1986-06-05 Herstellungsverfahren eines waermetauschers.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8503013 1985-06-18
SE8503013A SE457476B (sv) 1985-06-18 1985-06-18 Foerfarande foer framstaellning av vaermevaexlare i vilken det ena mediet leds i u-formade kanaler

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP86903682.2 Division 1987-01-08

Publications (2)

Publication Number Publication Date
EP0319520A1 EP0319520A1 (de) 1989-06-07
EP0319520B1 true EP0319520B1 (de) 1992-05-13

Family

ID=20360614

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89101072A Expired - Lifetime EP0319520B1 (de) 1985-06-18 1986-06-05 Herstellungsverfahren eines Wärmetauschers
EP86903682A Expired - Lifetime EP0258253B1 (de) 1985-06-18 1986-06-05 Wärmetauscher

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP86903682A Expired - Lifetime EP0258253B1 (de) 1985-06-18 1986-06-05 Wärmetauscher

Country Status (6)

Country Link
EP (2) EP0319520B1 (de)
AT (1) ATE76184T1 (de)
DE (1) DE3685335D1 (de)
ES (2) ES8801595A1 (de)
SE (1) SE457476B (de)
WO (1) WO1986007628A1 (de)

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DE4026988C2 (de) * 1990-08-25 1999-10-28 Behr Gmbh & Co Wärmetauscher mit einem Paket aus Flachrohren und Wellrippeneinheiten
SE469912C (sv) * 1992-09-30 1996-03-28 Valeo Engine Cooling Ab Fordonskylare med platta rör i rader där rören har vidgade ändpartier och däremellan närliggande rad vidrörande partier
FR2737557B1 (fr) * 1995-07-31 1997-09-12 Valeo Climatisation Tube a circulation en u pour echangeur de chaleur et son procede de fabrication
FR2738905B1 (fr) * 1995-09-20 1997-12-05 Valeo Climatisation Tube d'echangeur de chaleur a canaux de circulation a contre-courant
FR2786558B1 (fr) 1998-11-30 2001-02-02 Valeo Thermique Moteur Sa Tube plat pour echangeur de chaleur de largeur reduite
DE10127084B4 (de) * 2000-06-17 2019-05-29 Mahle International Gmbh Wärmeübertrager, insbesondere für Kraftfahrzeuge
ITTV20070115A1 (it) * 2007-06-26 2008-12-27 Galvanin Luigino S P A Scambiatore di calore per caldaia
GB2509762B (en) 2013-01-14 2015-02-04 Halla Visteon Climate Control Tube for Heat Exchanger
WO2021057984A1 (zh) * 2019-09-27 2021-04-01 浙江盾安人工环境股份有限公司 换热器
CN111958197B (zh) * 2020-08-17 2022-04-22 青岛恒恩智能装备有限公司 内置式冷凝器成型贴敷的连续生产方法及设备

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Publication number Publication date
EP0258253A1 (de) 1988-03-09
SE8503013L (sv) 1986-12-19
EP0319520A1 (de) 1989-06-07
ES297013Y (es) 1988-11-16
ES8801595A1 (es) 1988-02-16
SE8503013D0 (sv) 1985-06-18
ES297013U (es) 1988-03-16
DE3685335D1 (de) 1992-06-17
EP0258253B1 (de) 1991-04-10
ES556215A0 (es) 1988-02-16
SE457476B (sv) 1988-12-27
ATE76184T1 (de) 1992-05-15
WO1986007628A1 (en) 1986-12-31

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