EP1869390A1 - Echangeur thermique conçu en particulier pour un vehicule automobile - Google Patents

Echangeur thermique conçu en particulier pour un vehicule automobile

Info

Publication number
EP1869390A1
EP1869390A1 EP06723989A EP06723989A EP1869390A1 EP 1869390 A1 EP1869390 A1 EP 1869390A1 EP 06723989 A EP06723989 A EP 06723989A EP 06723989 A EP06723989 A EP 06723989A EP 1869390 A1 EP1869390 A1 EP 1869390A1
Authority
EP
European Patent Office
Prior art keywords
side part
heat exchanger
slots
tubes
exchanger according
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.)
Withdrawn
Application number
EP06723989A
Other languages
German (de)
English (en)
Inventor
Dieter BÄCHNER
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1869390A1 publication Critical patent/EP1869390A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements

Definitions

  • Heat exchanger in particular for a motor vehicle
  • the invention relates to a heat exchanger, in particular for a motor vehicle and in particular a charge air cooler, according to the preamble of claim 1.
  • Heat exchangers generally have two headers, between which pipes, such as flat tubes, and corrugated fins are arranged.
  • pipes such as flat tubes
  • corrugated fins In order to connect the headers and protect the outer corrugated ribs, side panels are often placed between the headers.
  • the outer tubes are colder, ie shorter, than the inner tubes and the corrugated ribs, so that the solder joints of the outer tubes are heavily loaded with the tubesheets. Due to the stresses, undesirable cracking occurs, in particular in the case of the outer tubes in the area of the solder joints with the tubesheets.
  • a heat exchanger for a motor vehicle which has a rib / tube block with a plurality of interconnected in the manner of a network structure tubes and corrugated fins.
  • a rib / tube block with a plurality of interconnected in the manner of a network structure tubes and corrugated fins.
  • the rib / tube block In order to stabilize the rib / tube block, in particular during a manufacturing process, it is enclosed on opposite sides of two side parts.
  • such a side part has an approximately U-shaped profile in cross-section, wherein the two upturned legs serve as reinforcing ribs.
  • these reinforcing ribs according to DE 197 53 408 A1 can have expansion regions which are designed as fold-like beads.
  • expansion sections are also provided, formed by openings in the side part, which correspond to the reinforcing ribs.
  • the reinforcing ribs are formed by a reshaped center section of the base plate of the side part, wherein for the production of the side part, an edge of the solicitnmit- tel Swisss section precut and then the center section from the plane of the base plate is formed out.
  • the side part may have projections at its longitudinal ends, which serve to seal the collecting boxes.
  • the side part has two expansion areas, which are formed essentially by openings. These extend transversely to the longitudinal extent of the side parts over almost the entire plane, i. not bent surface of the side part.
  • Noses are known in the side part, which form a means for distributing the solder, so that not the entire surface of the side part is soldered to the tubes / corrugated fins, whereby the function of elements for balancing the different thermal expansion coefficient and the associated different longitudinal extent of side member and pipes / corrugated fins, such as a pleat-like bead, is secured.
  • wrinkle-like beads that compensate for a portion of the stresses that arise as a result of different linear expansion of the tubes, however, there is often a rupture of the bead due to an overload.
  • split side parts are known transversely to the longitudinal extent. Such heat exchangers thus leave nothing to be desired, in particular with regard to the load on the solder joints of the outer tubes with the tubesheets.
  • a heat exchanger in particular for a motor vehicle, arranged between collecting boxes, through which flows through a first, hot medium pipes and possibly corrugated fins and with at least one laterally disposed between two headers side part, wherein the tubes and possibly corrugated ribs flowing around second medium
  • the side part receives at least a portion of the tensile stresses acting at least on the outermost tube in operation due to different thermal expansion of the tubes and corrugated ribs during operation, and the side part slots and / or openings having, which the spring constant of the side part opposite a side part without slots and / or openings changed such that at a different longitudinal extent of the middle tubes in comparison to the outermost, adjacent to the side part disposed tube, the tensile stress acting on the outermost tube is reduced.
  • Slots are provided in the side part, so they are preferably at least partially transverse to the longitudinal extent of the side part, so that the supporting cross-section is reduced accordingly.
  • the arrangement may be symmetrical or asymmetrical.
  • the slots are formed to extend only over a portion of the length of the side member, whereby the effective length of the supporting cross section is determined.
  • the slots are preferably H- or T-shaped, wherein they are preferably arranged in the longitudinal direction and / or perpendicular thereto.
  • an H-shaped configuration of the slots is preferred, wherein the "H" is aligned in the longitudinal direction of the side part.
  • openings are provided in the side part, then the openings are preferably circular and / or oval and / or elliptical and / or slot-like. Other shapes are possible.
  • the side part is preferably flat in its cross-section, ie rectangular, or U-shaped. Such side parts can be easily produced from a sheet by punching and optionally forming.
  • the side part has at least one rib, the same preferably extending perpendicular to the surface of the side part.
  • the ribs may be formed integrally with the side part or be placed. In the case of a one-piece embodiment, the rib may be formed by bending, possibly also by means of stretching.
  • the side part may consist of at least two parts which are firmly connected to each other.
  • ribs may be attached to the side part, for example by means of welding, optionally also by means of soldering, riveting.
  • the side part preferably has a spring constant of 1000 N / mm to 40,000 N / mm in its longitudinal extent. Spring constants of this order of magnitude provide optimum stress reduction, especially in the case of heat exchangers made of aluminum or aluminum alloys.
  • the heat exchanger is preferably stress-free with a uniform temperature distribution and room temperature.
  • the side part can be at room temperature under a predetermined compressive stress in the direction of its longitudinal extension, i. the outermost tube is slightly biased.
  • FIG. 4a-e schematic, partial plan views of side parts with other opening patterns
  • FIG. 5a-5j representations of another variant.
  • a heat exchanger in this case an intercooler of a motor vehicle, of which only parts of side parts 1 are shown in the drawing, according to the present embodiment, two manifolds formed by trough-shaped box elements and tube sheets, a plurality of tubes whose ends protrude into openings in the tube sheets are provided, and corrugated fins which are arranged between the tubes.
  • the side parts 1 are arranged on the outside between the collecting boxes, for which they are firmly connected to the collecting boxes, but not directly to the pipes and / or corrugated fins.
  • the parts of the heat exchanger are soldered together in a known per se, which preferably takes place in a single soldering process, or otherwise firmly connected to each other.
  • the side parts are designed accordingly in their spring constants. That is, when the heat exchanger, a difference in length of the middle, hot tubes and the outer, cold and therefore short tubes occurs, which leads to tensions, especially in the outer tubes in the field of solder joints with the tubesheets, the side parts compensate for these stresses at least partially, by at a temperature and thus length difference of the middle and outer tubes as a kind Tie rod act and thereby counteract the tensile stress on the outermost tubes, which is caused by the adjacent, inner / middle tubes.
  • the lateral part 1 in each case equalizes the tensile stress through the inner to the second outermost tubes to the outermost tube essentially by a corresponding, oppositely directed tensile stress (that is to say a corresponding pressure on the respective outermost tube).
  • the spring constant D in a heat exchanger of aluminum or an aluminum alloy is preferably in a range of 1000 N / mm to 40,000 N / mm, and the spring constant in the normal operating range does not necessarily have to be constant, i. that the spring characteristic must be linearly increasing.
  • the determination of the spring constant (s) is made by the choice of the supporting cross section and its effective length. It is necessary to ensure the function of a tie rod that over the entire operating range a purely elastic deformation of the side part takes place.
  • H-shaped slots 2 are provided to optimize the spring constant D in the longitudinal extent of the side part 1 such that the tension of the side part 1 with a corresponding difference in length of the adjacent outermost tubes equalizes the same, ie that the force of the side part 1 on the outermost tube the tension acting on the outermost tube is compensated due to the difference in length of the tubes, so that the solder joints between the outermost tube and the tubesheets arranged at both ends of the tube, through which the flow of force passes, are protected.
  • the legs of the H run in the direction of the longitudinal extent of the side part 1 and the cross-connection perpendicular thereto.
  • T-shaped slots 2 are provided, wherein both legs of the T perpendicular to the longitudinal extension of the side part 1 and aligned with each other on the side thereof and the two transverse lines in the longitudinal extension of the side part 1 and parallel to each other, where they end at the same height, are arranged.
  • a T-shaped slot 2 is provided, the leg of which is arranged perpendicular to the longitudinal extension of the side part 1 on one side thereof and the transverse line in the longitudinal extension of the side part 1 off the same.
  • a plurality of H-shaped slots 2 are provided, which are formed according to the embodiment and arranged at the same height.
  • the cross-sectional profile of the side part 1 does not necessarily have to be constant over the entire longitudinal extension thereof. This also applies to the thickness and overall width of the side part 1.
  • the side part 1 according to the embodiment is substantially, i. apart from the end areas in which it is soldered to the headers, just trained.
  • FIG. 2 a shows a section through the same in the region of the legs of the H-shaped slots 2.
  • the two edges are bent in the longitudinal extent of the side part by 90 °, so that the side part 2 is U-shaped.
  • the slots 2 run - according to the representation of Fig. 2b - in the corner areas.
  • the slots 2 may also extend in the bottom region, as shown in FIG. 2c, and / or possibly also in the region of the legs.
  • ribs or edges of a side part are bent by less than or more than 90 °, so that the ribs or edges are formed in cross-section as oblique legs.
  • FIG. 2 d shows a variant of a side part 1, in which a rib 3 rising vertically from the surface thereof is provided approximately centrally next to a slot 2 extending in the longitudinal extent of the side part.
  • This rib 3 is presently fixed by welding on the side part 1.
  • An edge is - according to the previous variant - bent by 90 ° in Fig. 2d, wherein the edge and rib 3 extend in the same direction.
  • Figures 3a to 3f show various other variants of slots 2, which are arranged obliquely or perpendicular to the longitudinal extent of the side part 1 of one or both sides. As shown, the slots 2 are provided at equidistant intervals, however, changing distances and / or changing angles to the longitudinal extension of the side part 1 may also be provided.
  • opening 4 is provided in the side part 1, with a single, circular opening 4 (see FIG. 4c), a plurality of circular openings 4 (see FIGS 4a, 4b) or, for example, oval openings 4 with the most varied arrangements of the longitudinal axis (cf., FIGS. 4d to 4e) can be provided.
  • the longitudinal axes can also be arranged obliquely. Any combinations or other shapes of the openings and / or slots are possible, depending on the desired spring characteristic of the side part. 1
  • FIGS. 5a to 5j show a variant of the first exemplary embodiment with a side part 1, in which three slots 2 arranged in an H-shape are provided.
  • the slots 2 each have the same width, which in the present case corresponds approximately to one twentieth of the width of the side part.
  • the two, the legs of the "H" forming slots 2 extend - with respect to the length of the side part 1 arranged centrally - over a little more than a third of the total length of the side part 1.
  • the two legs connecting slot 2 is with respect to the length of the side part. 1 arranged in the middle and ends in the legs forming slots 2.
  • the edge width of the side part 1 is on the outside of the slot 2, which is closest to the edge, about one sixth of the total width of the side part.
  • V-shaped beads 5 extending in the longitudinal direction, the depth of which is slightly less than the material thickness of the side part 1.
  • the length of the beads 5 is only about one third of the length of the short, transverse to the longitudinal extent of the side part 1 slot 2.
  • beads 5 are arranged two further, correspondingly formed and parallel thereto aligned beads 5 in the edge region of the side part 1 in the height of the transverse leg 2.

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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

L'invention concerne un échangeur thermique conçu en particulier pour un véhicule automobile, comprenant : des tuyaux qui sont disposés entre des cuves collectrices et qui peuvent être traversés par une première substance chaude, et éventuellement des nervures ondulées, et ; au moins une pièce latérale (1) qui est disposée de manière latérale entre deux cuves collectrices. Selon l'invention, une deuxième substance circulant autour des tuyaux et éventuellement des nervures ondulées est plus froide lors du fonctionnement que ladite première substance chaude. La pièce latérale (1) absorbe au moins une partie des contraintes de traction qui agissent, lors du fonctionnement, au moins sur le tuyau le plus à l'extérieur, sous l'effet de différentes dilatations thermiques des tuyaux et éventuellement des nervures ondulées. De plus, la pièce latérale (1) comporte des fentes (2) et/ou des ouvertures (4) qui modifient la rigidité de la pièce latérale (1) par rapport à une pièce latérale exempte de fentes et/ou d'ouvertures, de façon à réduire la contrainte de traction exercée sur le tuyau le plus à l'extérieur, lorsque les tuyaux centraux présentent une dilatation longitudinale différente de celle du tuyau situé le plus à l'extérieur, à côté de la pièce latérale (1).
EP06723989A 2005-04-05 2006-04-04 Echangeur thermique conçu en particulier pour un vehicule automobile Withdrawn EP1869390A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005015708 2005-04-05
PCT/EP2006/003031 WO2006105925A1 (fr) 2005-04-05 2006-04-04 Echangeur thermique conçu en particulier pour un vehicule automobile

Publications (1)

Publication Number Publication Date
EP1869390A1 true EP1869390A1 (fr) 2007-12-26

Family

ID=36633039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723989A Withdrawn EP1869390A1 (fr) 2005-04-05 2006-04-04 Echangeur thermique conçu en particulier pour un vehicule automobile

Country Status (4)

Country Link
US (1) US20080190596A1 (fr)
EP (1) EP1869390A1 (fr)
CN (1) CN101166945A (fr)
WO (1) WO2006105925A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN102261864A (zh) * 2010-05-28 2011-11-30 扬州英谛车材实业有限公司 一种新型散热器芯子支撑板
JP5009413B2 (ja) * 2010-12-22 2012-08-22 シャープ株式会社 熱交換器及びそれを搭載した空気調和機
CN102285313A (zh) * 2011-02-23 2011-12-21 泰安鼎鑫冷却器有限公司 用于汽车换热器的护板
CN104180702A (zh) * 2013-05-21 2014-12-03 重庆长安汽车股份有限公司 消除汽车散热器热应力的边挡板及汽车散热器
US10359238B2 (en) 2013-10-23 2019-07-23 Modine Manufacturing Company Heat exchanger and side plate
US10429133B2 (en) * 2016-08-04 2019-10-01 Hanon Systems Heat exchanger element with thermal expansion feature
DE102017206113A1 (de) * 2017-04-10 2018-10-11 Mahle International Gmbh Wärmeübertrager für ein Kraftfahrzeug

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Also Published As

Publication number Publication date
CN101166945A (zh) 2008-04-23
US20080190596A1 (en) 2008-08-14
WO2006105925A1 (fr) 2006-10-12

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