EP2295923A2 - Echangeur thermique, moteur à combustion interne et utilisation de l'échangeur thermique - Google Patents

Echangeur thermique, moteur à combustion interne et utilisation de l'échangeur thermique Download PDF

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Publication number
EP2295923A2
EP2295923A2 EP10170747A EP10170747A EP2295923A2 EP 2295923 A2 EP2295923 A2 EP 2295923A2 EP 10170747 A EP10170747 A EP 10170747A EP 10170747 A EP10170747 A EP 10170747A EP 2295923 A2 EP2295923 A2 EP 2295923A2
Authority
EP
European Patent Office
Prior art keywords
opening
heat exchanger
collar
concavity
fluid
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.)
Granted
Application number
EP10170747A
Other languages
German (de)
English (en)
Other versions
EP2295923B1 (fr
EP2295923A3 (fr
Inventor
Franco Ghiani
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 EP2295923A2 publication Critical patent/EP2295923A2/fr
Publication of EP2295923A3 publication Critical patent/EP2295923A3/fr
Application granted granted Critical
Publication of EP2295923B1 publication Critical patent/EP2295923B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • 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
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F28F2275/045—Fastening; Joining by brazing with particular processing steps, e.g. by allowing displacement of parts during brazing or by using a reservoir for storing brazing material
    • 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
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Definitions

  • the invention relates to a heat exchanger for exchanging heat between a first fluid on the one hand and a second fluid on the other hand with a block for the separate and heat exchanging guidance of the first and the second fluid, comprising; a number of flow passages through which the first fluid passes; a chamber receiving the flow channels and permeable by the second fluid; a housing in which the chamber and the flow channels are arranged; and a floor substantially separating the first and second fluid which spaces the flow channels formed in the form of pipes, a holding portion of a pipe being held in an opening of the floor and the opening having a collar with an insertion slope widening the opening area.
  • An initially mentioned heat exchanger is disclosed, for example, in US Pat DE 100 16 029 A1 , This has openings in the form of passages with an approximately from the beginning to the end of a passage decreasing wall thickness, which is so thin at about the lower end of a connecting portion, that the insertion bevel can be folded to the outside.
  • Such an insertion bevel provides a larger interface and provides sufficient leeway to ensure sufficient strength of the connection, even with tubes located at the lower longitudinal transient limit.
  • the placement of a tube plate is facilitated on a tube bundle, even if distance tolerances of the tube bundle are not exactly met. It should also be possible to provide an improved solder joint.
  • the invention begins, whose task is to provide a heat exchanger with an improved pipe-ground connection.
  • an improved pipe-to-floor connection is to be made available in a heat exchanger which has an opening with a collar with an opening which widens the opening area.
  • the object is achieved by the invention by means of a heat exchanger of the type mentioned, is provided in accordance with the invention that the collar has on at least one side an indentation to the interior of the opening portion deforming indentation. This improves the pipe-to-floor connection.
  • the invention also leads to an internal combustion engine with such a heat exchanger.
  • a heat exchanger according to the concept of the invention has proven particularly suitable for use in the form of an exhaust gas heat exchanger, for example an exhaust gas cooler for exhaust gas cooling, in an exhaust gas recirculation system of an internal combustion engine of a motor vehicle.
  • the heat exchanger according to the concept of the invention has also proven to be preferred for use as a charge air cooler for the direct or indirect cooling of charge air in a Ladeluffzu slaughterhouse for an internal combustion engine of a motor vehicle.
  • the first fluid is in particular formed as an exhaust gas and / or a charge air.
  • the second fluid is accordingly formed in particular as a coolant or the like.
  • the coolant may be liquid,
  • the invention is based on the consideration that an insertion bevel facilitates the cassetting of a tube plate and a tube bundle and is fundamentally also suitable for a connection, in particular a solder connection, between a tube sheet and a holding portion of a pipe to improve.
  • an insertion bevel however, can not always eliminate the transverse dimension variance of a holding section of a tube in comparison to a cross section of the opening edge formed by the actual opening passage.
  • an insertion bevel extends the opening area, this can even be disadvantageous if a holding section of a pipe has an undersize.
  • the tube could be easily introduced with its holding portion in the extended opening portion of the opening, but would be insufficient soldering can be, since in such a case, a distance between the holding portion of the tube and opening edge proves to be too large.
  • the invention has recognized that the insertion bevel is to be provided on at least one side with a concavity that deforms to the interior of the opening region.
  • the concavity makes it possible, according to the concept of the invention, to reliably fix even pipes which have too small a cross-section at their holding section compared to the opening cross-section.
  • the invention has also recognized that this fixation is made available before the soldering process and thus the soldering process itself can already take place at a reliably fixed connection between the pipe and the tube sheet.
  • the opening of the bottom is particularly advantageous as a passage structure in a heat exchanger according to the invention.
  • a tube collar of the passage has to an insertion bevel.
  • An insertion bevel can be formed, for example, as a funnel-shaped extension of the opening area.
  • an insertion bevel is arranged outwardly, ie on a side of the base directed away from the chamber of the heat exchanger block.
  • the holding portion of the tube is particularly advantageous liquid-tight in the region of the insertion, in particular metallic, connected to the collar.
  • the holding portion of a tube is conveniently an end-side portion of a tube and passes through the aperture so that the distal end of the tube beyond the tube bottom, i. outside the chamber, is arranged.
  • a tube is particularly suitable a flat tube, such as a Mehrschflachrohr or a Einttingflachrohr - particularly suitable, for example, a B-tube or the like
  • a flat tube has a narrow side and a broad side, which is associated with a corresponding narrow side and a broad side of the opening in the ground.
  • the opening of the tube plate is formed as a flat opening with a narrow side and a broad side.
  • the concavity is formed only on one or only on two gegenuberfregenden sides of the opening.
  • This has the advantage that a tube, in particular a flat tube, in a corresponding opening by the concavity on preferably two opposite sides for a comparatively well clamped and on the other hand can be relatively well and simply threaded through the unchanged left insertion of the other two sides , This is true even for tubes with undersize.
  • the concept of the invention allows a self-acting during insertion of the tube compensation and adaptation of a draft contour or an opening edge on the one hand and a cross section of the tube in the holding section on the other. Overall, a joint connection between the tube sheet and the bottom can be advantageously optimized. In addition, the concept of the invention makes it possible to increase production throughput and make assembly of floor and tube bundles more reliable and easier.
  • the opening of the bottom is formed as a flat opening and the concavity is arranged only on two opposite collar sides of the opening. Preferably, these are the narrow sides of the collar.
  • the simplified introduction of a tube is largely maintained in the opening by leaving the lead-in at a broad side of the collar and yet achieved by the concavity on a narrow side of the collar sufficient fixation of a pipe.
  • This area forces the tube cross-section with respect to the actual opening passage of the soil to a precise shape when inserting the tube.
  • the mold is then completely closed and firmly fixed in the opening of the soil. A further expansion of the pipe cross-section is not required.
  • An improved solder joint is already achievable due to the good fixation of the tube in the ground. Likewise are unwanted changes in the holding area of the tube reliably prevented.
  • the curvature can basically be carried out to varying degrees.
  • Beilspielmik in the context of a first preferred embodiment, the concavity partially or completely cancel the insertion.
  • a Einwölbungshack increases with a collar height.
  • a Einwölbungshack increase with a collar height as well as a skew of the insertion bevel. This leads, in the context of a particularly preferred development, to the fact that, at least in the region of a ridge of the concavity, the collar is aligned with the opening edge formed by the actual opening passage. It may also project in the region of the ridge of the collar beyond the opening edge into a region of the actual opening passage.
  • the ridge of the concavity is aligned with the opening edge or protrudes beyond this in the region of a narrow side of a flat opening.
  • a flat tube with the advantages explained above can be kept very narrow or less narrow in a particularly advantageous manner.
  • a collar can basically run on all sides of the opening. It has also proven to be advantageous that the collar extends only on one side or only on two opposite sides of the opening. The two opposite sides of the opening are in particular narrow sides of the opening. Accordingly, it has proven to be possible in principle that the concavity extends on all sides of the opening. In addition, it may be particularly advantageous that the concavity is arranged only on one side or only on opposite sides of an opening. The opposite sides of the opening are in particular narrow sides of the opening.
  • the collar on opposite narrow sides of an opening can be formed like a tab with a larger collar height than on a broadside of the opening. The tab is particularly well suited to carry a concavity according to the concept of the invention.
  • the concavity is formed as a nose directed to the opening area.
  • the nose unfolds - as a clamping nose - preferably a clamping action on an associated side of a holding portion of a tube, when it is inserted into the opening.
  • the collar can have a section with no opening (ie at the distal end of the collar) without an indentation and / or an opening-near section with a concavity (ie at the proximal end of the collar).
  • Fig. 1 shows a heat exchanger 100 in the form of an exhaust gas cooler with a in Fig. 1 laterally open block 10 for the separate and heat exchanging guidance of a first fluid I in the form of an exhaust gas and a second fluid II in the form of a coolant.
  • the supply of the coolant is present symbolically represented by an arrow for the second fluid II.
  • the first fluid I is the block 10 via connection port 20 to supply or removed.
  • a connecting piece 20 expands from an exhaust pipe to a funnel for forming a diffuser 21, which serves for the uniform flow of a flow cross section for the first fluid I formed by flow channels 30.
  • the block 10 has, in addition to a tube bundle for forming the number of Strömtingskanälen 30 through which the first fluid I flows through a chamber 41 in a housing 40 of the block 10 which receives the flow channels and can be flowed through by the second fluid II, which housing 40 is shown as laterally open.
  • the block 10 moreover has a bottom 50 largely separating the first fluid I and the second fluid II.
  • a bottom 50 serves to connect an inflow-side diffuser 21 (bottom left in FIG Fig. 1 ) and an outflow-side diffuser 21 (upper right in the Fig. 1 ).
  • the different floors 50 and diffusers 21 are provided with the same reference numerals for the sake of simplicity.
  • FIG. 2 the block 10 of the heat exchanger 100 with the bundle of flow channels 30, the housing 40 and the floors 50 is shown in more detail.
  • the flow channels 30 are presently formed in the form of flat tubes having a in Fig. 4 have apparent narrow side 31 and broadside 32.
  • FIG. 3 and FIG. 4 show in a perspective or exploded view the connection of the flat tubes 30 on one of the floors 50. From this It can be seen that a bottom 50 keeps the tubes 30 at a distance.
  • an end-side holding portion H of a tube 30 is held in an opening 51 of the bottom 50 in the present case.
  • the holding portion H is formed as an end-side portion which passes through the opening 51 of the bottom 50 and is thus arranged with a distal end E of the tube 30 beyond the bottom 50.
  • Fig. 5 shows in plan view formed according to the concept of the invention bottom 50 with the already explained openings 51.
  • the opening 51 is present for receiving a flat tube with the narrow side 31 of the flat tube associated narrow side S and one of the broad side 32 of the flat tube 30 associated broadside B in Shape of a flat opening executed.
  • An opening 51 is presently formed as a passage, a in Fig. 6 (A), (B) has better recognizable collar 52.
  • the collar 52 extends at its foot (proximal end) along an opening edge 53 of the opening 51 formed by the actual opening passage.
  • the collar 52 opens with a Opening area - in the foot of the collar of the opening passage - widening insertion bevel 1.
  • the insertion bevel 1 opens in the present funnel-shaped starting from the opening edge 53rd
  • the concavity 2 is formed in such a way that it virtually eliminates the insertion bevel 1 on the narrow side S of the opening 51.
  • the collar 52 is aligned with the opening edge 53 formed by the actual opening passage. In the present case, this is achieved in that the concavity the concavity 2 increases with a collar height exactly as an oblique dimension of the insertion bevel 1; These thus cancel each other out.
  • the concavity 2 is only on the narrow side S of the opening 51 mounted - concretely on the opposite narrow sides S of the opening 51, like out Fig. 6 (B) it can be seen, the concavity 2 is formed in the form of a clamping nose for a flat tube 30 to be held in the opening 51.
  • the clamping nose is to clamp the flat tube at its opposite narrow sides 31. This has the advantage that one - as out Fig. 4 visible - introduced flat tube through the running at the broad side B of the opening 51 funnel-shaped insertion 1 even without incorrect positioning to the bottom 50 is threaded securely.
  • the tube 30, at least in the region of the ridge 3 of the clamping lug, is frictionally held by the clamping nose.
  • the tube 30 can be suitably deformed or clamped at its holding portion H, so as to adopt a shape as accurate as possible, which practically corresponds to the course of the opening edge 53.
  • a pipe cross-section Q of a pipe 30 made with undersize or otherwise inaccurate would be deformed at its holding section H by the transverse forces acting from the clamping nose on the ridge 3 of the concavity 2.
  • the deformation is such that the contour of the cross section Q - for example, on the broad side B of the opening 51 and / or on the narrow side S of the opening 51 - applies to the opening edge 53 and is pushed there.
  • the tube 30 Due to the formation of the concavity 2 in the insertion bevel 1 of the collar 52 of the opening 51 according to the concept of the invention, the tube 30 is thus already held in the opening 51 before a solder connection.
  • the solder joint to be subsequently attached in a space between the insertion 1 and holding portion H of the tube 30th be attached - the funnel-shaped course of the insertion bevel 1 forms a Lotkehle, which also serves as a solder depot. It forms a reliable and tight solder joint to ensure safe separation of the first fluid 1 from the second fluid II through the bottom 50.
  • a balance and the automatic adjustment of the tube cross-section Q on the contour of the opening edge 53 is according to the concept of the invention by the concavity 2 reached on the narrow side S.

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  • 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)
EP10170747.9A 2009-07-28 2010-07-26 Echangeur thermique, moteur à combustion interne et utilisation de l'échangeur thermique Not-in-force EP2295923B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009035089A DE102009035089A1 (de) 2009-07-28 2009-07-28 Wärmetauscher, Brennkraftmaschine und Verwendung des Wärmetauschers

Publications (3)

Publication Number Publication Date
EP2295923A2 true EP2295923A2 (fr) 2011-03-16
EP2295923A3 EP2295923A3 (fr) 2014-04-23
EP2295923B1 EP2295923B1 (fr) 2017-04-12

Family

ID=43037668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10170747.9A Not-in-force EP2295923B1 (fr) 2009-07-28 2010-07-26 Echangeur thermique, moteur à combustion interne et utilisation de l'échangeur thermique

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EP (1) EP2295923B1 (fr)
DE (1) DE102009035089A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011085479A1 (de) 2011-10-28 2013-05-02 Behr Gmbh & Co. Kg Wärmeübertrager
DE102015219627A1 (de) * 2015-10-09 2017-04-13 Röchling Automotive SE & Co. KG Frischgaszufuhrkanal
CN112901328A (zh) * 2021-02-01 2021-06-04 陈首君 一种发动机用的虹吸式节能冷却装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10016029A1 (de) 2000-03-31 2001-10-04 Modine Mfg Co Wärmetauscher mit einer Vielzahl von Rohren

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD104233A1 (fr) * 1973-04-16 1974-03-05
JPH0612229B2 (ja) * 1986-07-29 1994-02-16 Ｑ洋ラジエ−タ−株式会社 熱交換器のチユ−ブ接合部
DE4120442A1 (de) * 1991-06-20 1992-12-24 Thermal Waerme Kaelte Klima Flachrohrwaermetauscher, herstellungsverfahren desselben und anwendungen
JPH08327283A (ja) * 1995-05-30 1996-12-13 Sanden Corp 熱交換器の熱交換チューブ接合構造
DE19844848A1 (de) * 1998-09-30 2000-04-06 Modine Mfg Co Wärmetauscher
US6241144B1 (en) * 1999-09-30 2001-06-05 Caterpillar Inc. Friction fit tab and slot shape
US6786275B2 (en) * 2002-05-23 2004-09-07 Valeo Engine Cooling Heat exchanger header assembly
US7413006B2 (en) * 2006-04-06 2008-08-19 Modine Manufacturing Company Header plate for use in a heat exchanger
DE102008033594A1 (de) * 2007-07-26 2009-02-26 Behr Gmbh & Co. Kg Boden für einen Wärmetauscher

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10016029A1 (de) 2000-03-31 2001-10-04 Modine Mfg Co Wärmetauscher mit einer Vielzahl von Rohren

Also Published As

Publication number Publication date
DE102009035089A1 (de) 2011-02-03
EP2295923B1 (fr) 2017-04-12
EP2295923A3 (fr) 2014-04-23

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