EP2299225A2 - Échangeur de chaleur coulée sous pression ainsi que procédé destiné à la fabrication d'un tel dispositif - Google Patents

Échangeur de chaleur coulée sous pression ainsi que procédé destiné à la fabrication d'un tel dispositif Download PDF

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Publication number
EP2299225A2
EP2299225A2 EP10170458A EP10170458A EP2299225A2 EP 2299225 A2 EP2299225 A2 EP 2299225A2 EP 10170458 A EP10170458 A EP 10170458A EP 10170458 A EP10170458 A EP 10170458A EP 2299225 A2 EP2299225 A2 EP 2299225A2
Authority
EP
European Patent Office
Prior art keywords
ribs
heat transfer
transfer device
housing part
base housing
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Withdrawn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
EP10170458A
Other languages
German (de)
English (en)
Inventor
Axel Hemsing
Frank Langner
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP2299225A2 publication Critical patent/EP2299225A2/fr
Withdrawn legal-status Critical Current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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial 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
    • 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
    • F28F3/048—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 in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • 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
    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded
    • 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
    • F28F2275/06—Fastening; Joining by welding
    • F28F2275/062—Fastening; Joining by welding by impact pressure or friction welding

Definitions

  • the invention relates to a heat transfer device for an internal combustion engine having an outer housing, an inner housing, which in the outer housing, arranged and flows around the coolant and can be flowed through by a medium to be cooled, and which has a basic housing part, which has a first, closed over the circumference portion and a second circumferentially unilaterally open portion which is closed by a lid member and a method of manufacturing such a heat transfer device, wherein the heat transfer device is produced by die casting and the lid part is connected to the base housing part by welding, in particular friction stir welding.
  • Such heat transfer devices are used for example as a cooler in internal combustion engines. They serve to cool exhaust gases to improve the combustion process or to cool the charge air. It is known to produce heat exchangers from a plurality of die-cast shells arranged one inside the other, ribs extending from the die-cast shells into the channel through which the fluid to be cooled flows. The shell, from which the ribs extend into the channel through which the fluid to be cooled flows, simultaneously serves as a partition between the channel through which the cooling fluid flows and the channel through which the fluid to be cooled flows, so that a coolant jacket is formed between the inner housing and the outer housing.
  • Such a heat transfer device is, for example, in the DE 10 2005 058 204 B4 disclosed.
  • This produced in the die-casting heat exchanger has a coolant jacket between the inner housing and outer housing and is flowed through in a U-shape of exhaust gas.
  • the inner housing consists of a basic housing part, which is closed by a lid. From the cover and the bottom of the base housing part extend to improve the efficiency broken ribs in the direction of the opposite wall.
  • the area of the basic housing part, in which a closed peripheral wall is present is kept as short as possible.
  • a mold insert for forming the ribs can be removed from the side of the lid part from the base housing part after casting.
  • a disadvantage of a heat exchanger constructed in this way is that problems arise with the strength of the heat exchanger and its ribs fixed on one side during operation.
  • the first section can be made much longer without loss of efficiency, so that the length of the weld decreases when attaching the lid. As a result, processing time and thus processing costs can be reduced.
  • the strength of the heat transfer device increases due to the increased stiffness of the base housing part and the reduction in the size of the lid and thus weld length.
  • the ribs extend in the main flow direction of the fluid to be cooled over the entire first portion.
  • the maximum cooling effect of the ribs and at the same time the maximum rigidity of the basic housing part is achieved.
  • the ribs in the region of the closed peripheral wall in the main flow direction have a greater extent than the interrupted in the main flow direction interrupted ribs.
  • the channel through which the fluid to be cooled is U-shaped, wherein a rib arranged in the first section serves as a partition wall, via which an inlet region is separated from an outlet region.
  • a rib arranged in the first section serves as a partition wall, via which an inlet region is separated from an outlet region.
  • the serving as a partition rib extends into the second portion of the base housing part, wherein the lid part rests on serving as a partition rib in the second section. This also largely prevents short-circuit currents, since there are no gaps in the dividing wall and the equalized flow from the first section initially does not tend to overflow the dividing wall.
  • FIG. 1 an inner housing 2 of a heat transfer device according to the invention is shown, which is surrounded in the assembled state by an outer housing, not shown, which is pushed by a closed back 4 of the inner housing 2 against a front flange 6 of the inner housing 2 and welded there.
  • a coolant jacket completely surrounds the inner casing 2, with the exception of an open front side 8 of the inner casing 2.
  • the inner housing 2 has a base housing part 12, which, viewed from the front side 8 to the rear side 4, has two sections 14, 16 lying one behind the other.
  • the first portion 14 has a closed peripheral wall 18 consisting of four substantially mutually perpendicular side walls.
  • the following, second section 16 has over its circumference an open upper peripheral wall 20, which is closed in the figures by a substantially plate-shaped cover part 22.
  • the first portion 14 of the base housing part 12 has ribs 24 which extend from the upper peripheral wall 20 to the lower peripheral wall 26 and over the entire length of the first portion 14. They are made in one piece with the closed peripheral wall 18, as will be described below. This also means that a firm connection between the ribs 24 and the opposite Circumferential walls 20, 26 is made, which are thus connected to each other not only by the lateral peripheral walls 28 but also by the ribs 24.
  • ribs 30 extend alternately from the cover part 22 and from the lower peripheral wall 26 of the base housing part 12 into the interior of the inner housing 2. They each end in front of the opposite wall. These ribs 30 are additionally in rows one behind the other, wherein the successive rows are arranged offset from one another.
  • One of the ribs which is arranged in the central region of the open front side 8, is continued without interruption from the first section 14 into the second section 16 of the inner housing 2.
  • This rib serves as a partition wall 32 and ends in front of the closed rear side 4, so that here takes place a U-shaped deflection of a media flow to be cooled.
  • an inlet region 34 of the inner housing 2 is thus separated from an outlet region 36 by the dividing wall 32.
  • this serving as a partition wall 32 rib extends from the lower peripheral wall 26 in the direction of the opposite upper peripheral wall 20, on which the cover part 22 loosely rests on the partition wall 32.
  • a channel 38 through which the medium to be cooled can flow is formed, each of which is provided by a lateral flow Peripheral wall 28, the partition wall 32, and a part of the upper peripheral wall 20 and the lower peripheral wall 26 is limited.
  • a gas flow of a medium to be cooled can accordingly flow into the inner housing 2 via the inlet region 34 formed on the front side 8.
  • the gas continues to flow through the first section 14 on one side of the dividing wall 32, passing through the ribs 24. This establishes a main flow direction A of the medium.
  • transverse flows can arise through the interruptions between the ribs 30, the main flow direction A remaining intact.
  • a reversal of the gas flow takes place along the semicircular rear side 4 of the inner housing 2. After flowing through the reversal region, the flow continues in the now opposite main flow direction A to the outlet region 36 on the front side 8.
  • the heat transfer is very good, since the heat from the ribs 24 can be discharged to both sides, which is not possible in the following areas.
  • Such a heat transfer device is made by using a die with a slide forming the fins 24 and a mold insert forming the fins 30, the slide being inserted from the front side 8 and demolded to the front after the casting process while the mold set is from the top 20 pushed in the die and pulled out there for demoulding.
  • continuous ribs 24 are made via the slider connecting the opposed peripheral walls 20, 26 with each other while the mold insert forms the discontinuous ribs 30 which extend upwardly from the lower peripheral wall 26.
  • Both types of ribs 24, 30 have a decreasing cross-section in the removal direction, so that the ribs 24 in the first direction 14 are wedge-shaped in the main flow direction, while the ribs 30 have a larger cross-section in their respective section facing the attachment wall to ensure clean demolding to be able to ensure.
  • both can be connected to one another by friction stir welding. Subsequently, the likewise cast outer housing is pushed by the back 4 over the inner housing 2 and welded thereto with the flange 6 or bolted with the interposition of a seal.
EP10170458A 2009-09-03 2010-07-22 Échangeur de chaleur coulée sous pression ainsi que procédé destiné à la fabrication d'un tel dispositif Withdrawn EP2299225A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009039833A DE102009039833A1 (de) 2009-09-03 2009-09-03 Wärmeübertragungsvorrichtung sowie Verfahren zur Herstellung einer derartigen Wärmeübertragungsvorrichtung

Publications (1)

Publication Number Publication Date
EP2299225A2 true EP2299225A2 (fr) 2011-03-23

Family

ID=43242384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10170458A Withdrawn EP2299225A2 (fr) 2009-09-03 2010-07-22 Échangeur de chaleur coulée sous pression ainsi que procédé destiné à la fabrication d'un tel dispositif

Country Status (2)

Country Link
EP (1) EP2299225A2 (fr)
DE (1) DE102009039833A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103776170A (zh) * 2012-10-23 2014-05-07 德扬技术全球能源方案有限公司 换热器以及制造这种换热器的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011002053A1 (de) 2011-04-14 2012-10-18 Pierburg Gmbh Wärmetauscher für eine Verbrennungskraftmaschine sowie Verfahren zur Herstellung eines derartigen Wärmetauschers
DE102011053422B4 (de) * 2011-09-09 2015-03-05 Pierburg Gmbh Druckgussform und Verfahren zur Herstellung eines Gehäuseteils einer Wärmeübertragungsvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005058204B4 (de) * 2005-12-02 2008-07-24 Pierburg Gmbh Kühlvorrichtung für eine Verbrennungskraftmaschine
DE102007019206B4 (de) * 2007-04-24 2009-11-26 Pierburg Gmbh Wärmeübertragungsvorrichtung
DE102008012930B3 (de) * 2008-03-06 2009-06-04 Pierburg Gmbh Verfahren zur Herstellung von Wärmeübertragungsvorrichtungen
DE102008036222B3 (de) * 2008-08-02 2009-08-06 Pierburg Gmbh Wärmeübertragungseinheit für eine Verbrennungskraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103776170A (zh) * 2012-10-23 2014-05-07 德扬技术全球能源方案有限公司 换热器以及制造这种换热器的方法
CN103776170B (zh) * 2012-10-23 2019-11-05 德扬技术控股有限公司 换热器以及制造这种换热器的方法

Also Published As

Publication number Publication date
DE102009039833A1 (de) 2011-03-10

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