EP0622602B1 - Kühler eines Kraftfahrzeuges - Google Patents

Kühler eines Kraftfahrzeuges Download PDF

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Publication number
EP0622602B1
EP0622602B1 EP19940400894 EP94400894A EP0622602B1 EP 0622602 B1 EP0622602 B1 EP 0622602B1 EP 19940400894 EP19940400894 EP 19940400894 EP 94400894 A EP94400894 A EP 94400894A EP 0622602 B1 EP0622602 B1 EP 0622602B1
Authority
EP
European Patent Office
Prior art keywords
plates
radiator
radiator according
protrusions
perforated
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
EP19940400894
Other languages
English (en)
French (fr)
Other versions
EP0622602A3 (de
EP0622602A2 (de
Inventor
Jean-Claude Deronzier
Stéphane Pitruzzella
Hervé Damotte
Jean-Claude Vera
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.)
ECIA Equipements et Composants pour lIndustrie Automobile SA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
ECIA Equipements et Composants pour lIndustrie Automobile SA
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 Commissariat a lEnergie Atomique CEA, ECIA Equipements et Composants pour lIndustrie Automobile SA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0622602A2 publication Critical patent/EP0622602A2/de
Publication of EP0622602A3 publication Critical patent/EP0622602A3/de
Application granted granted Critical
Publication of EP0622602B1 publication Critical patent/EP0622602B1/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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated 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
    • F28D1/03—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
    • F28D1/0308—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 the conduits being formed by paired plates touching each other
    • F28D1/0316—Assemblies of conduits in parallel
    • 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
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element

Definitions

  • the invention relates to a radiator. automotive and a possible manufacturing process of certain elements constituting the exchange surface of heat.
  • the heat transfer fluid of engines automobile is generally a liquid composed of water mixed with glycol or other antifreeze.
  • the heat that it absorbs is evacuated by the exchange surface of a radiator exposed to ambient air, which constitutes the refrigerant, and in which the water flows between a distribution water box and a water box collection.
  • This exchange surface is composed for the essential, in most cases, of tubes metallic copper or aluminum parallel to very flat oval, circular or rectangular section which are connected by their ends to the boxes water generally made of polymeric material; looks like cooling circulates between the tubes thanks to the speed of the automobile or, failing that, to a fan.
  • the intervals between the tubes are occupied by corrugated sheets of metal intended to increase the heat exchange surface: they are connected to tubes by solders established at the tops of ripples. But the technological difficulties are important to control the quality of the solder on such thin sheets (110 ⁇ m for example), and we have could observe contact defects between sheets and tubes which interfered with heat conduction and therefore the efficiency of the radiator.
  • the radiator fragment known from the figure 1 is made up of tubes 1 of very rectangular section flat, portions of both sides of which have been illustrated, or main plates 2 for two of them.
  • Water to cool circulates in the tubes 1, towards the arrow L, along canals 4.
  • the spaces between the tubes 1, substantially wider than the channels 4, are occupied by wavy sheets 5 united to flat plates 2, at the tops of the undulations, by solders 6.
  • the fins of the sheets 5 have undergone stamping which has formed lamellae 7, the shape is similar to the shutters of the shutters, for increase the turbulence of the circulating air parallel to the fins, i.e. perpendicular to the liquid, according to arrow G.
  • German patent DE-A-2 should also be mentioned 611 399 which describes a heat exchanger whose plates are extruded; this manufacturing process can be chosen for the radiator plates of the invention.
  • the radiator object of the invention composed essentially of hollow parallel plates of material polymer in which flows in smooth channels the liquid heat transfer fluid and between which a gaseous refrigerant such as air, is further characterized in that the plates have faces exposed to coolant provided with linear projections and perpendicular to the direction of gas flow.
  • projections have the technical function of increasing the heat exchange surface and create turbulence of the refrigerant flow by varying the interval section or the channels it crosses.
  • the radiator heat exchange surface element can be made from half plates molded by injection, by welding the half-plates together to constitute the flow channels for the heat transfer fluid.
  • the plates can be manufactured in one piece by an extrusion process continuous, and the projections therefore extend in the axis of the tubes: an extrusion process will then be used.
  • a simple construction and economical radiator is obtained if it is composed, in addition to plates, of fluid boxes each of which has an openwork face recesses in each of which one end of one of the plates is engaged.
  • This construction is indeed compatible with boxes in also polymeric material.
  • the boxes can be joined to the plates by bonding or welding. They may also include, with the same concern for simplicity, a semi-cylindrical envelope or analog connected and united to the openwork face by same means.
  • a radiator 10 has generally been illustrated according to the invention in Figure 2. It comprises two water boxes, one distribution 11 and one collection 12, located one above the other. Each of water boxes 11 and 12 is formed by an openwork plate 13 and an envelope 14.
  • the envelope 14 can be semi-cylindrical, its end generators are joined to the perforated plate 13 by welding or bonding and its opposite portion is pierced and joined to tubing 15.
  • a flexible pipe not shown is connected to the pipes 15 for transport the water from the cooling circuit of the engine in the distribution water box 11 and the remove from collection 12.
  • the plates 9 of the invention extend between the perforated plates 13, to through which their ends are engaged and welded or glued to reach the water boxes 11 and 12, as Figure 4 illustrates.
  • the ambient air reaches the radiator 10 by its front side, cross member flowing between the tubes 9, thus cooling the water, which is distributed in the plates 9 flowing between the water boxes 11 and 12.
  • the radiator 10 is placed at the front of the automobile, behind the grille and in front of the engine. As this location is classic, we just to symbolize the automobile seen from the front by the frame A.
  • the water boxes 11 and 12 and the plates 9 are all made of polymeric material.
  • the plates 9 can be formed as in the known embodiment of two main faces 16 all parallel between them and joined by much shorter faces 17; a joint surface 18 cuts the short faces 17 if the plates 15 are produced by injection molding in two parts or half-plates each of which is composed of one of the main faces 16 and a half short faces 17 then by welding or gluing of these half-plates at the joint surface 18.
  • plate 9 has a section uniform, it is however possible and more advantageous to manufacture it by continuous extrusion. Plate 9 is then produced in half-plates as before or, which will probably be preferred, from room to room similar shape, except that there is no longer a surface joint 18.
  • the volume included in plate 9, which constitutes the channel 21 in which the water flows, can be divided into parallel channels separated by longitudinal ribs 25 whose function is to better guide the water.
  • These longitudinal ribs 25 are produced by extrusion or assembled to the plates 9 by bonding or welding as appropriate.
  • the channel 21 is smooth, that is to say of uniform section from one end of plate 9 to the other, again so as not to create pressure drop.
  • the main faces 16 are provided with linear projections 19, which we see here in section and which are perpendicular to the direction G of the flow air.
  • Their section can be semi-cylindrical and joined to the main face 16 by a diameter.
  • the linear projections 19 vary the section of the channels 20 and make the air flow turbulent; the stirring thus caused increases the licking of the faces main 16 by air and improves the extraction of heat.
  • the linear projections 19 are continuous over the entire free length of the plates 9, that is to say between the perforated plates 13, but do not extend over the portions of the plates 9 engaged in the perforated plates 13. If the process of manufacturing, extrusion for example, requires extend over these portions, they are then leveled.
  • the improvement coefficients of the heat transfer between the air and the wall of the plates 9 were generally between 1.25 and 3 for increases in relative pressure loss included between 3 and 8.
  • the values of the h / e ratio were between 0.01 and 0.5, the w / h ratio was between 5 and 100.
  • the main faces 16 adjacent are offset by half a step, that is to say that the linear projections 19 project at mid-distance linear projections 19 of the main plate 16 neighbor.
  • Figure 5a for the record represents a linear projection 19a to semicircular section supported on a side plate 16 by its diameter, as in FIG. 3; a square section projection 19b is shown in the Figure 5b; a triangular section projection 19c, supported on the side plate 16 by one side, is shown in Figure 5c, and a sectional projection rectangular 19d is shown in Figure 5d; conversely, another triangular section projection 19th, supported on the main plate 16 by an angle and shown in Figure 5e, on a projection almost circular section 19f and shown in the figure 5f, can also be chosen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (10)

  1. Kühler eines Kraftfahrzeugs, im wesentlichen gebildet durch parallele Platten (9) aus polymerem Material, in denen in glatten Kanälen (21) eine Wärmeübertragungsflüssigkeit zirkuliert und zwischen denen ein gasförmiges Kühlfluid zirkuliert,
    dadurch gekennzeichnet,
    daß die Platten (9) dem Kühlfluid (G) ausgesetzte Flächen haben, die geradlinige Wölbungen (19) aufweisen, senkrecht zu der Fließrichtung des Gases.
  2. Kühler nach Anspruch 1, dadurch gekennzeichnet, daß die geradlinigen Wölbungen (19) kontinuierlich sind.
  3. Kühler nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die geradlinigen Wölbungen zweier benachbarter Platten unterschiedliche, zu den Platten senkrechte Projektionen haben.
  4. Kühler nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Wölbungen, berechnet bezüglich einer Breite (e), die aufeinanderfolgende Platten (9) trennt, eine zwischen 0,01 und 0,5 enthaltende Höhe (h) haben.
  5. Kühler nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Wölbungen in Fließrichtung des Kühlfluids bezogen auf ihre Höhe (h) eine Teilung (p) zwischen 5 und 100 haben.
  6. Kühler nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Platten extrudiert sind.
  7. Kühler nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Platten spritzgegossen sind.
  8. Kühler nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Platten durch zwei zusammengelötete oder -geklebte Halbplatten gebildet werden.
  9. Kühler nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß er außerdem zwei Wärmeübertragungsfluid-Behälter (11, 12) umfaßt, wobei jeder dieser Behälter eine ausgesparte Fläche bzw. Vorderseite (13) mit Ausschnitten aufweist, in denen jeweils ein Ende von einer der Platten (9) sitzt.
  10. Kühler nach Anspruch 9, dadurch gekennzeichnet, daß die Behälter eine Hülle (14) umfassen, die mit der ausgesparten Vorderseite (13) verbunden ist, wobei die ausgesparten Vorderseiten (13) und die Hüllen (14) aus polymerem Material sind.
EP19940400894 1993-04-28 1994-04-26 Kühler eines Kraftfahrzeuges Expired - Lifetime EP0622602B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9305010A FR2704635B1 (fr) 1993-04-28 1993-04-28 Radiateur d'automobile eet procédé de fabrication.
FR9305010 1993-04-28

Publications (3)

Publication Number Publication Date
EP0622602A2 EP0622602A2 (de) 1994-11-02
EP0622602A3 EP0622602A3 (de) 1995-08-09
EP0622602B1 true EP0622602B1 (de) 1998-03-04

Family

ID=9446522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940400894 Expired - Lifetime EP0622602B1 (de) 1993-04-28 1994-04-26 Kühler eines Kraftfahrzeuges

Country Status (3)

Country Link
EP (1) EP0622602B1 (de)
DE (1) DE69408708T2 (de)
FR (1) FR2704635B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10213543A1 (de) * 2001-11-30 2003-06-12 Hartmut Koenig Wärmeübertrager für gasförmige Medien
DE10218912A1 (de) * 2002-04-27 2003-11-06 Modine Mfg Co Gewellter Wärmetauschkörper
US7975479B2 (en) 2007-04-30 2011-07-12 Caterpillar Inc. Bi-material corrosive resistant heat exchanger
CN105051479B (zh) 2013-03-15 2017-05-31 达纳加拿大公司 具有嵌套凸片的传热表面
CA2914453A1 (en) * 2013-06-27 2014-12-31 Dana Canada Corporation Fluid channels having performance enhancement features and devices incorporating same
CN104269970B (zh) * 2014-10-20 2017-02-15 青岛龙发热电有限公司 一种可用于电动机冷却的气液双介质冷却器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB441462A (en) * 1933-04-13 1936-01-13 Hermann Carl Amme Improvements in a heat exchange surface
JPS5031464A (de) * 1973-05-25 1975-03-27
DE2611399A1 (de) * 1976-03-18 1977-09-22 M & D Klima System Ag Waermetauscher
JPS60226696A (ja) * 1984-04-24 1985-11-11 Mitsubishi Heavy Ind Ltd フイン付伝熱管及びその製造方法
DE3615300A1 (de) * 1986-05-06 1987-11-12 Norsk Hydro As Kuehlrohre, sowie verfahren und vorrichtung zu deren herstellung
GB8910966D0 (en) * 1989-05-12 1989-06-28 Du Pont Canada Panel heat exchangers formed from thermoplastic polymers
DE3929004A1 (de) * 1989-09-01 1991-03-07 Behr Gmbh & Co Waermetaeuscher
GB9019921D0 (en) * 1990-09-12 1990-10-24 Benham Paul Polycarbonate radiator
IT1244187B (it) * 1990-12-18 1994-07-08 Sauro Stella Scambiatore di calore per veicoli
TW224508B (de) * 1991-03-15 1994-06-01 Toshiba Co Ltd

Also Published As

Publication number Publication date
DE69408708D1 (de) 1998-04-09
FR2704635A1 (fr) 1994-11-04
DE69408708T2 (de) 1998-09-17
EP0622602A3 (de) 1995-08-09
FR2704635B1 (fr) 1995-06-02
EP0622602A2 (de) 1994-11-02

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