US20080190596A1 - Heat Exchanger, in Particular for a Motor Vehicle - Google Patents

Heat Exchanger, in Particular for a Motor Vehicle Download PDF

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Publication number
US20080190596A1
US20080190596A1 US11/910,547 US91054706A US2008190596A1 US 20080190596 A1 US20080190596 A1 US 20080190596A1 US 91054706 A US91054706 A US 91054706A US 2008190596 A1 US2008190596 A1 US 2008190596A1
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US
United States
Prior art keywords
side part
heat exchanger
slots
pipes
openings
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.)
Abandoned
Application number
US11/910,547
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English (en)
Inventor
Dieter Bachner
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
Assigned to BEHR GMBH & CO. KG reassignment BEHR GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BACHNER, DIETER
Publication of US20080190596A1 publication Critical patent/US20080190596A1/en
Abandoned 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
    • 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

  • 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 usually have two header boxes, between which pipes, for example flat pipes, and corrugated fins are arranged.
  • pipes for example flat pipes
  • corrugated fins are arranged.
  • side parts are frequently arranged between the header boxes.
  • the outer pipes are colder, that is to say shorter, than the inner pipes and the corrugated fins, with the result that the soldered connections of the outer pipes to the pipe plates are stressed in a pronounced manner.
  • undesired fracture formations occur, in particular in the outer pipes in the region of the soldered connections to the pipe plates.
  • DE 197 53 408 A1 has disclosed a heat exchanger for a motor vehicle, which heat exchanger has a fin/pipe block with a multiplicity of pipes and corrugated fins which are connected to one another in the manner of a network structure.
  • the fin/pipe block In order to stabilize the fin/pipe block, in particular during the manufacturing process, it is surrounded on opposite sides by two side parts.
  • a side part of this type has an approximately U-shaped profile in cross section for strength reasons, the two limbs which are bent upward serving as reinforcing ribs.
  • said reinforcing ribs according to DE 197 53 408 A1 can have expansion regions, which expansion regions are configured as fold-like beads.
  • expansion sections are also provided, formed by apertures in the side part, which correspond with the reinforcing ribs.
  • the reinforcing ribs are formed by a formed flat center part of the base plate of the side part, one edge of the flat center part being precut in sections for manufacture of the side part, and the flat center part subsequently being formed out of the plane of the base plate.
  • the side part can have projections which serve to cover header boxes.
  • the side part has two expansion regions which are formed substantially by apertures. The latter extend transversely with respect to the longitudinal extent of the side parts over virtually the entire plane, that is to say the unbent surface of the side part.
  • U.S. Pat. No. 3,939,908 A1 has disclosed the provision of openings with lugs in the side part which form a means for distributing the solder, with the result that the entire surface of the side part is not soldered to the pipes/corrugated fins, as a result of which the function of elements is ensured for compensation of the different coefficients of thermal expansion and the associated different longitudinal expansion of the side part and pipes/corrugated fins, such as a fold-like bead.
  • fold-like beads of this type which compensate for part of the stresses which are produced as a consequence of different longitudinal expansions of the pipes, tearing of the bead often occurs, however, as a consequence of overloading.
  • a heat exchanger in particular for a motor vehicle, having pipes and optionally corrugated fins which are arranged between header boxes and through which a first, hot medium can flow, and having at least one side part which is arranged laterally between two header boxes, a second medium which flows through the pipes and optionally the corrugated fins being colder during operation than the first, hot medium, the side part receiving at least one part of the tensile stresses which acts at least on the outermost pipe during operation as a consequence of different thermal expansions of the pipes and optionally corrugated fins, and the side part having slots and/or openings which change the spring constant of the side part with respect to a side part without slots and/or openings, in such a way that the tensile stress which acts on the outermost pipe is reduced in the case of a different longitudinal expansion of the central pipes in comparison with the outermost pipe which is arranged adjacently to the side part.
  • the spring constant of the side part can be fixed by means of slots and/or openings in conjunction with the loadbearing cross section and its effective length.
  • slots are provided in the side part, they preferably extend at least in regions transversely with respect to the longitudinal extent of the side part, with the result that the loadbearing cross section is reduced accordingly.
  • the arrangement can be symmetrical or asymmetrical.
  • the slots are preferably configured so as to extend only over a part of the length of the side part, as a result of which the effective length of the loadbearing cross section is fixed.
  • the slots are preferably of H-shaped or T-shaped configuration; they are preferably arranged in the longitudinal extent and/or perpendicularly with respect to the former.
  • an H-shaped design of the slots is preferred, the “H” being oriented in the longitudinal direction of the side part.
  • the openings are preferably of circular and/or oval and/or ellipsoid and/or slot-like configuration. Other shapes are possible.
  • the side part is preferably of flat, that is to say rectangular, or U-shaped configuration.
  • Side parts of this type can be manufactured simply from a metal sheet by means of punching and optionally forming.
  • the side part preferably has at least one fin, the latter preferably extending perpendicularly with respect to the surface of the side part.
  • the fins can be configured integrally with the side part or can be placed onto it. In the case of an integral configuration, the fin can be formed by means of bending, optionally also by means of drawing out.
  • the side part can comprise at least two parts which are connected fixedly to one another.
  • fins can be attached to the side part, for example by means of welding, optionally also by means of soldering or riveting.
  • the side part preferably has a spring constant of from 1000 N/mm to 40000 N/mm. Spring constants of this magnitude result in an optimum stress reduction, in particular in the case of heat exchangers which are made from aluminum or aluminum alloys.
  • the heat exchanger is preferably stressfree at a uniform temperature distribution and room temperature.
  • the side part can be under a predefined compressive stress in the direction of its longitudinal extent, that is to say the outermost pipe is prestressed somewhat.
  • FIGS. 1 a - d show diagrammatic details of plan views of side parts having different slot patterns
  • FIGS. 2 a - d show diagrammatic sections of side parts having different cross sections
  • FIGS. 3 a - f show diagrammatic details of plan views of side parts having further slot patterns
  • FIGS. 4 a - e show diagrammatic details of plan views of side parts having further opening patterns
  • FIGS. 5 a - j show illustrations of a further variant.
  • a heat exchanger a charge air cooler of a motor vehicle in the present case, of which only parts of side parts 1 are shown in the drawing, has two header boxes according to the present exemplary embodiment, formed by trough-shaped box elements and pipe plates, a plurality of pipes, the ends of which protrude into openings which are provided in the pipe plates, and corrugated fins which are arranged between the pipes.
  • the side parts 1 are arranged on the outside between the header boxes, for which purpose they are connected fixedly to the header boxes but not directly to the pipes and/or corrugated fins.
  • the parts of the heat exchanger are soldered to one another in a manner which is known per se, which preferably takes place in a single soldering operation, or are connected fixedly to one another in some other way.
  • the spring constants of the side parts are designed accordingly. That is to say, if a length difference occurs of the central, hot pipes and the outer, cold and therefore short pipes in the heat exchanger, which length difference leads to stresses, in particular in the case of the outer pipes in the region of the soldered connections to the pipe plates, the side parts compensate at least partially for these stresses by acting as a type of tie rod in the case of a temperature difference and therefore length difference of the central and the outer pipes, and counteracting the tensile stress on the outermost pipes which is caused by the adjacent, inner/central pipes as a result.
  • slots 2 or other openings are provided in the side part 1 , which ensure that the spring characteristic curve, that is to say the force over the length difference of the (in particular outermost and second outermost) pipes, of the side part 1 in each case compensates for the tensile stress as a result of the innermost to second outermost pipes on the outermost pipe, substantially by a corresponding tensile stress which is oriented in the opposite direction (that is to say, a corresponding pressure on the respective outermost pipe).
  • the spring constant D preferably lies in the range from 1000 N/mm to 40000 N/mm, it not being necessary for the spring constant to necessarily be constant in the normal operating range, that is to say it not being necessary for the spring characteristic diagram to rise in a linear manner.
  • the spring constant or spring constants is/are fixed by the selection of the loadbearing cross section and its active length. In order to ensure the function as tie rod, it is required that a purely elastic deformation of the side part takes place over the entire operating range.
  • slots 2 which are arranged in an H-shape are provided in the side part 1 , in order to optimize the spring constant D in the longitudinal extent of the side part 1 in such a way that the tensile stress of the side part 1 , in the case of a corresponding length difference of the adjacent outermost pipes, compensates for the latter, that is to say that the force of the side part 1 on the outermost pipe compensates for the tensile stress which acts on the outermost pipe as a consequence of the length difference of the pipes, with the result that the soldered connections between the outermost pipe and the pipe plates which are arranged at both ends of the pipe, through which the force flux extends, are protected.
  • the limbs of the H extend in the direction of the longitudinal extent of the side part 1 and the transverse connection extends perpendicularly with respect to this.
  • T-shaped slots 2 are provided, both limbs of the T being arranged perpendicularly with respect to the longitudinal extent of the side part 1 and in a manner which is aligned with one another and ends on the side of said side part 1 , and the two transverse lines being arranged in the longitudinal extent of the side part 1 and parallel to one another, said two transverse lines ending at the same level.
  • only one T-shaped slot 2 is provided, the limb of which is arranged perpendicularly with respect to the longitudinal extent of the side part 1 in a manner which ends on one side of the latter, and the transverse line is arranged in the longitudinal extent of the side part 1 in an eccentric manner with respect to the latter.
  • a plurality of H-shaped slots 2 are provided which are configured in accordance with the exemplary embodiment and are arranged at the same level.
  • the cross-sectional profile of the side part 1 does not necessarily have to be constant over the entire longitudinal extent of said side part 1 . This is also true of the thickness and overall width of the side part 1 .
  • the side part 1 according to the exemplary embodiment is substantially of planar configuration, that is to say apart from the end regions, in which it is soldered to the header boxes.
  • FIG. 2 a shows a section through the latter in the region of the limbs of the H-shaped slots 2 .
  • the two edges are bent by 90° in the longitudinal extent of the side part, with the result that the side part 2 is of U-shaped configuration.
  • the slots 2 extend into the corner regions.
  • the slots can also extend in the base region and/or optionally also in the region of the limbs.
  • fins or edges of a side part are bent by more or less than 90°, with the result that the fins or edges are configured as oblique limbs in cross section.
  • FIG. 2 d shows one variant of a side part 1 , in which a fin 3 which rises up perpendicularly from the surface of said side part 1 is provided approximately centrally next to a slot 2 which extends in the longitudinal extent of the side part.
  • this fin 3 is attached fixedly to the side part 1 by means of welding.
  • one edge is bent over by 90° in FIG. 2 d, the edge and the fin 3 extending in the same direction.
  • FIGS. 3 a to 3 f show different other variants of slots 2 which are arranged, on one or both sides, obliquely or perpendicularly with respect to the longitudinal extent of the side part 1 .
  • the slots 2 are provided at equidistant spacings, but different spacings and/or changing angles with respect to the longitudinal extent of the side part 1 can also be provided.
  • openings 4 are provided in the side part 1 instead of slots, it being possible for a single, circular opening 4 (cf. FIG. 4 c ), a plurality of circular openings 4 which are arranged in a row or offset (cf. FIGS. 4 a, 4 b ) or, for example, also oval openings 4 with a very wide variety of arrangements of the longitudinal axis (cf. FIGS. 4 d to 4 e ) to be provided.
  • the longitudinal axes can also be arranged obliquely.
  • FIGS. 5 a to 5 j show one variant of the first exemplary embodiment having a side part 1 , in which three slots 2 are provided which are arranged in an H-shape.
  • the slots 2 have in each case the same width which, in the present case, corresponds to approximately one twentieth of the width of the side part.
  • the two slots 2 which form the limbs of the “H” extend over somewhat more than one third of the entire length of the side part 1 .
  • the slot 2 which connects the two limbs is arranged in the center with regard to the length of the side part 1 and ends in the slots 2 which form the limbs.
  • the edge width of the side part 1 is approximately one sixth of the overall width of the side part 1 .
  • V-shaped beads 5 which extend in the longitudinal direction and the depth of which is somewhat smaller than the material thickness of the side part 1 are arranged along the center longitudinal axis of the side part 1 .
  • the length of the beads 5 is considerably smaller than that of the slots 2 .
  • the length of the beads 5 is only approximately one third of the length of the short slot 2 which extends transversely with respect to the longitudinal extent of the side part 1 .
  • two further beads 5 which are configured accordingly and are oriented parallel to the former are arranged in the edge region of the side part 1 at the level of the transversely extending limb 2 .
  • each opening 4 in the form of a hole having an internal diameter which is greater than the width of the slots 2 is provided in the center longitudinal axis of the side part 1 in the end region of the limbs of the “H” which is formed by the slots 2 , centrally between the limb ends.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US11/910,547 2005-04-05 2006-04-04 Heat Exchanger, in Particular for a Motor Vehicle Abandoned US20080190596A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005015708 2005-04-05
DE102005015708.4 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
US20080190596A1 true US20080190596A1 (en) 2008-08-14

Family

ID=36633039

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/910,547 Abandoned US20080190596A1 (en) 2005-04-05 2006-04-04 Heat Exchanger, in Particular for a Motor Vehicle

Country Status (4)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130240187A1 (en) * 2010-12-22 2013-09-19 Sharp Kabushiki Kaisha Heat exchanger and air conditioner equipped with same
JP2016534308A (ja) * 2013-10-23 2016-11-04 モーディーン・マニュファクチャリング・カンパニーＭｏｄｉｎｅ Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｃｏｍｐａｎｙ 熱交換器およびサイドプレート
US10429133B2 (en) * 2016-08-04 2019-10-01 Hanon Systems Heat exchanger element with thermal expansion feature

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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
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
DE102017206113A1 (de) * 2017-04-10 2018-10-11 Mahle International Gmbh Wärmeübertrager für ein Kraftfahrzeug

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1357597A (en) * 1918-07-12 1920-11-02 Springer John Frame for radiators
US3939908A (en) * 1973-04-04 1976-02-24 Societe Anonyme Des Usines Chausson Method for equalizing differential heat expansions produced upon operation of a heat exchanger and heat exchanger embodying said method
US4719967A (en) * 1987-06-22 1988-01-19 General Motors Corporation Heat exchanger core with shearable reinforcements
US5257454A (en) * 1992-01-30 1993-11-02 Ford Motor Company Method of making a heat exchanger with thermal stress relieving zone
US5954123A (en) * 1995-06-12 1999-09-21 Ford Global Technologies, Inc. Heat exchanger
US6328098B1 (en) * 1998-11-10 2001-12-11 Valeo Inc. Side member for heat exchanger and heat exchanger incorporating side plate
US20020023735A1 (en) * 2000-08-30 2002-02-28 Akira Uchikawa Double heat exchanger with condenser and radiator
US6412547B1 (en) * 2000-10-04 2002-07-02 Modine Manufacturing Company Heat exchanger and method of making the same
US20020084064A1 (en) * 2000-12-28 2002-07-04 Rhodes Eugene E. Integrated heat exchanger support and sealing structure
US20050121178A1 (en) * 2002-04-23 2005-06-09 Chi-Duc Nguyen Heat exchanger, especially a heat exchanging module, for a motor vehicle
US20050224219A1 (en) * 2002-11-25 2005-10-13 Behr Gmbh &Co. Kg Heat exchanger unit, in particular for a motor vehicle and method for producing said unit
US20070163751A1 (en) * 2004-02-02 2007-07-19 Behr Gmbh & Co. Kg Metal side-plate for a radiator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2735198B2 (ja) * 1987-11-16 1998-04-02 カルソニック株式会社 アルミニウム製熱交換器
US6269868B1 (en) * 1999-07-02 2001-08-07 Visteon Global Technologies, Inc. Heat exchanger with variable compression side support
FR2873434B1 (fr) * 2004-07-20 2017-12-29 Valeo Thermique Moteur Sa Echangeur de chaleur muni de joues
JP2006052866A (ja) * 2004-08-09 2006-02-23 Calsonic Kansei Corp 熱交換器

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1357597A (en) * 1918-07-12 1920-11-02 Springer John Frame for radiators
US3939908A (en) * 1973-04-04 1976-02-24 Societe Anonyme Des Usines Chausson Method for equalizing differential heat expansions produced upon operation of a heat exchanger and heat exchanger embodying said method
US4719967A (en) * 1987-06-22 1988-01-19 General Motors Corporation Heat exchanger core with shearable reinforcements
US5257454A (en) * 1992-01-30 1993-11-02 Ford Motor Company Method of making a heat exchanger with thermal stress relieving zone
US5954123A (en) * 1995-06-12 1999-09-21 Ford Global Technologies, Inc. Heat exchanger
US6328098B1 (en) * 1998-11-10 2001-12-11 Valeo Inc. Side member for heat exchanger and heat exchanger incorporating side plate
US20020029869A1 (en) * 1998-11-10 2002-03-14 Kodumudi Magesh V. Side member for heat exchanger and heat exchanger incorporating side plate
US6736193B2 (en) * 1998-11-10 2004-05-18 Valeo Thermique Moteur Side member for heat exchanger and heat exchanger incorporating side plate
US6523603B2 (en) * 2000-08-30 2003-02-25 Denso Corporation Double heat exchanger with condenser and radiator
US20020023735A1 (en) * 2000-08-30 2002-02-28 Akira Uchikawa Double heat exchanger with condenser and radiator
US6412547B1 (en) * 2000-10-04 2002-07-02 Modine Manufacturing Company Heat exchanger and method of making the same
US20020084064A1 (en) * 2000-12-28 2002-07-04 Rhodes Eugene E. Integrated heat exchanger support and sealing structure
US20050121178A1 (en) * 2002-04-23 2005-06-09 Chi-Duc Nguyen Heat exchanger, especially a heat exchanging module, for a motor vehicle
US7198095B2 (en) * 2002-04-23 2007-04-03 Behr Gmbh & Co. Kg Heat exchanger, especially a heat exchanging module, for a motor vehicle
US20050224219A1 (en) * 2002-11-25 2005-10-13 Behr Gmbh &Co. Kg Heat exchanger unit, in particular for a motor vehicle and method for producing said unit
US20070163751A1 (en) * 2004-02-02 2007-07-19 Behr Gmbh & Co. Kg Metal side-plate for a radiator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130240187A1 (en) * 2010-12-22 2013-09-19 Sharp Kabushiki Kaisha Heat exchanger and air conditioner equipped with same
JP2016534308A (ja) * 2013-10-23 2016-11-04 モーディーン・マニュファクチャリング・カンパニーＭｏｄｉｎｅ Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｃｏｍｐａｎｙ 熱交換器およびサイドプレート
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

Also Published As

Publication number Publication date
EP1869390A1 (fr) 2007-12-26
WO2006105925A1 (fr) 2006-10-12
CN101166945A (zh) 2008-04-23

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BEHR GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BACHNER, DIETER;REEL/FRAME:020062/0214

Effective date: 20070928

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION