EP1690057B1 - Echangeur thermique, en particulier echangeur thermique de gaz d'echappement - Google Patents

Echangeur thermique, en particulier echangeur thermique de gaz d'echappement Download PDF

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Publication number
EP1690057B1
EP1690057B1 EP04790976A EP04790976A EP1690057B1 EP 1690057 B1 EP1690057 B1 EP 1690057B1 EP 04790976 A EP04790976 A EP 04790976A EP 04790976 A EP04790976 A EP 04790976A EP 1690057 B1 EP1690057 B1 EP 1690057B1
Authority
EP
European Patent Office
Prior art keywords
housing
heat exchanger
duct
expansion element
channel
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.)
Not-in-force
Application number
EP04790976A
Other languages
German (de)
English (en)
Other versions
EP1690057A1 (fr
Inventor
Peter Kalisch
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1690057A1 publication Critical patent/EP1690057A1/fr
Application granted granted Critical
Publication of EP1690057B1 publication Critical patent/EP1690057B1/fr
Anticipated expiration legal-status Critical
Not-in-force 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
    • F28D7/16—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 in parallel spaced relation
    • F28D7/163—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 in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • 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
    • F28F9/0236—Header boxes; End plates floating elements
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
    • 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

Definitions

  • the invention relates to a heat exchanger for cooling gas or liquid media, in particular an exhaust gas heat exchanger for an internal combustion engine, comprising a tubular housing having at least one inlet opening with a subsequent annular channel for distributed inflow of a cooling medium into the interior of the housing.
  • Such a heat exchanger is known from JP 2000045884.
  • Such a heat exchanger is also known from DE 102 38 882 A1 and comprises a tubular housing in which a tube bundle is used for the axial flow through the exhaust gas, wherein the tube bundle is surrounded by an introduced coolant.
  • a tube bundle is used for the axial flow through the exhaust gas, wherein the tube bundle is surrounded by an introduced coolant.
  • the tubes on the one hand and the housing on the other hand arise during operation of the exhaust gas heat exchanger thermoelectric voltages due to different strains of the tubes and the housing.
  • To compensate for such voltages slots are arranged in the housing, which are sealed to the outside by a channel housing with a corrugated pipe section. This creates an integrated into the heat exchanger housing expansion compensation element.
  • the annular channel located within the housing impairs the flow-through cross-section and the production of the heat exchanger.
  • the annular channel alone as uniform as possible circumferential distribution of the coolant over the housing interior and a largely uniform flow velocity of the coolant inside the housing can not be achieved.
  • the invention is based on the object to make the generic heat exchanger such that with a simplified structure distributed over the circumference of the housing uniform flow of coolant into the housing interior can be done safely.
  • the inlet opening is arranged on the channel housing and has a connecting piece for a hose line.
  • the heat exchanger housing and the channel housing are made in one piece, e.g. is made by casting. Regardless, it is also conceivable to produce the channel housing, for example, made of sheet metal separately from the heat exchanger housing and to connect with this by welding or soldering tight.
  • the heat exchanger with a channel housing made of sheet metal, it is in the context of the invention also advantageous if parts of the heat exchanger housing and the channel housing are used simultaneously to form a conventional in heat exchangers of this type expansion element.
  • a heat exchanger is created, which is compact and can be produced inexpensively, since, for example, a special channel housing for the distribution of the coolant can be omitted.
  • the channel housing is formed with a corrugated pipe section and the passage openings are designed as slots which extend at an axial distance from each other partially over the circumference of the heat exchanger housing.
  • the integrated expansion element simultaneously performs the function of uniform distribution of the coolant inside the housing.
  • the expansion element is arranged with the inlet opening at the inlet end of the housing, wherein the channel housing with a smooth cylindrical part welded to the heat exchanger housing and the subsequent corrugated pipe section on the inlet-side flange of the housing or is soldered.
  • the heat exchanger shown in the exemplary embodiment is an exhaust gas heat exchanger 1 for cooling the exhaust gases of an internal combustion engine, in particular for cooling the exhaust gases recirculated into the combustion chamber of the internal combustion engine in certain operating states (so-called exhaust gas recirculation).
  • the exhaust gas heat exchanger 1 has a tubular housing 2, each with a flange 3, 4 on the inflow 5 and the outflow 6.
  • the housing 2 is U-shaped, so that the flanges 3 and 4 are laterally adjacent.
  • the U-shaped housing parts are interconnected by a tab 7.
  • a sheet metal hanger 8 is provided for fixing the heat exchanger 1 on the engine housing.
  • a tube bundle extending in the longitudinal direction is arranged in the interior of the heat exchanger housing 2 and is welded tightly to the housing 2 via a respective tube plate at the longitudinal housing ends.
  • the housing 2 is in the region of lying on the inflow 5 flange 3 outside of a channel housing 9, which encloses a ring channel 10 relative to the housing 2.
  • the channel housing 9 is made of sheet metal and is connected to the heat exchanger housing 2 by welding or soldering.
  • the channel housing 2 may in the context of the invention also consist of the same material as the housing 2 and be made in one piece with this.
  • the channel housing 2 has an inlet opening 11 with a connecting piece 12 for a coolant hose.
  • passage openings 13 to 16 distributed over the circumference are arranged. Via the passage openings 13 to 16 can thus evenly distributed from the connecting piece 11 in the annular channel 10 coolant flow into the interior of the housing 2, so in addition to a substantially uniform heating and a largely uniform flow velocity of the coolant along the surface of the exhaust gas flowed through the pipes is ensured.
  • the exit of the coolant from the housing 2 takes place in the vicinity of the flange 4 on the outflow side 6 through a connecting piece 17.
  • the channel housing 9 with the passage openings is part of an expansion element 18 integrated in the housing 2.
  • the passage openings 13 to 16 designed as slots, which are arranged at an axial distance from each other over part of the circumference, while the slots outwardly covering and made of sheet metal channel housing 9 next to a smooth cylindrical housing portion 19 for receiving the connecting piece 12 still an additional corrugated pipe section 20th has for the expansion compensation.
  • the connecting pieces 12 and 17 are arranged close to the flanges 3 and 4. This results in that the expansion element 17 is positioned close to the flange 3, wherein the housing portion 19 is welded directly to the housing 2 and the corrugated pipe section 20 directly to the flange 3 or soldered.
  • a protective cover 21 the channel housing 9 is protected against external influences.
  • the object of the invention is shown in the combination of a heat exchanger with an expansion element.
  • the invention also includes an embodiment of a heat exchanger without expansion element, in which the channel housing 2 is designed without the additional corrugated pipe section 20 and the passage openings 13 to 16 are made as simple holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Claims (5)

  1. Échangeur de chaleur pour refroidir des fluides gazeux ou liquides, en particulier échangeur de chaleur de gaz d'échappement pour un moteur à combustion, comprenant un boîtier de forme tubulaire qui présente au moins une ouverture d'entrée avec un canal annulaire qui s'y raccorde pour assurer un écoulement entrant réparti d'un fluide de refroidissement dans l'intérieur du boîtier, dans lequel le canal annulaire (10) est formé à l'extérieur sur le boîtier (2) par un boîtier de canal (9) qui entoure à distance un tronçon du boîtier, et dans lequel le canal annulaire (10) est relié à l'intérieur du boîtier par des ouvertures traversantes (13 à 16) agencées de façon répartie à la périphérie du boîtier (2),
    caractérisé en ce que
    les ouvertures traversantes (13 à 16) sont réalisées sous forme de fentes qui s'étendent sur une partie de la périphérie du boîtier et à distance axiale les unes des autres, lesquelles forment un élément de dilatation (18) conjointement avec le boîtier de canal (9) qui comporte un tronçon en forme de tube ondulé (20).
  2. Échangeur de chaleur selon la revendication 1,
    caractérisé en ce que le boîtier de canal (9) comprend, outre le tronçon en forme de tube ondulé (20), une partie de boîtier cylindrique (19) qui s'y raccorde en direction axiale et sur lequel est agencée l'ouverture d'entrée (11) avec la tubulure d'entrée (12).
  3. Échangeur de chaleur selon la revendication 1,
    caractérisé en ce que le boîtier (2) est pourvu d'une bride respective (3, 4) à ses extrémités longitudinales pour le raccordement d'un conduit de gaz échappement, et en ce que l'élément de dilatation (18) est prévu à l'extrémité du boîtier (2) située du côté entrée (5) des gaz d'échappement.
  4. Échangeur de chaleur selon la revendication 1,
    caractérisé en ce que le boîtier de canal (2) est réalisé sous forme d'une pièce en tôle qui est reliée de façon étanche par une extrémité au boîtier (2) et par l'autre extrémité à la bride (3) du côté entrée.
  5. Échangeur de chaleur selon la revendication 1,
    caractérisé en ce que l'élément de dilatation (18) est entouré par un manchon protecteur (21).
EP04790976A 2003-11-08 2004-10-28 Echangeur thermique, en particulier echangeur thermique de gaz d'echappement Not-in-force EP1690057B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10352221A DE10352221A1 (de) 2003-11-08 2003-11-08 Wärmetauscher, insbesondere Abgaswärmetauscher
PCT/EP2004/012206 WO2005047799A1 (fr) 2003-11-08 2004-10-28 Echangeur thermique, en particulier echangeur thermique de gaz d'echappement

Publications (2)

Publication Number Publication Date
EP1690057A1 EP1690057A1 (fr) 2006-08-16
EP1690057B1 true EP1690057B1 (fr) 2007-04-25

Family

ID=34559493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04790976A Not-in-force EP1690057B1 (fr) 2003-11-08 2004-10-28 Echangeur thermique, en particulier echangeur thermique de gaz d'echappement

Country Status (5)

Country Link
US (1) US20070144157A1 (fr)
EP (1) EP1690057B1 (fr)
BR (1) BRPI0415736A (fr)
DE (2) DE10352221A1 (fr)
WO (1) WO2005047799A1 (fr)

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217798A (en) * 1962-12-05 1965-11-16 American Radiator & Standard Heat exchanger
US3407870A (en) * 1966-11-07 1968-10-29 Braune Rudolf Ernst Recuperative type heat exchanger
US3422887A (en) * 1967-06-19 1969-01-21 Graham Mfg Co Inc Condenser for distillation column
DE3027510C2 (de) * 1980-07-19 1987-04-09 Hochtemperatur-Reaktorbau GmbH, 4600 Dortmund Gewölbter Deckel zum Verschließen einer vertikalen Ausnehmung in einem Druckgefäß
FR2497937B1 (fr) * 1981-01-13 1986-03-07 Stein Industrie Dispositif d'echange de chaleur a faisceau de tubes avec lyres de dilatation soustraites aux vibrations
US4875712A (en) * 1985-02-05 1989-10-24 Asahi Glass Company, Ltd. Joint structure for a tube support plate and a tube
US4838581A (en) * 1985-02-05 1989-06-13 Asahi Glass Company Ltd. Joint structure for a tube support plate and a tube
DE3914862C2 (de) * 1989-05-05 1993-12-16 Productech Gmbh Verfahren zur Verminderung von mechanischen Spannungen beim Schweissen
US5584340A (en) * 1995-08-07 1996-12-17 Heatcraft Inc. Heat exchanger with flexible tube support
DE29612361U1 (de) * 1996-07-19 1996-08-29 Gustav Wahler Gmbh U. Co, 73730 Esslingen Kühler für gasförmige oder flüssige Medien, insbesondere Abgaskühler, für eine Brennkraftmaschine
JP2000045884A (ja) * 1998-07-24 2000-02-15 Hino Motors Ltd Ｅｇｒクーラ
US6273180B1 (en) * 1998-12-23 2001-08-14 L'air Liquide, Societe Anonyme Pour L'etude Et L'eploitation Des Procedes Georges Claude Heat exchanger for preheating an oxidizing gas
US6684938B2 (en) * 1999-01-20 2004-02-03 Hino Motors, Ltd. EGR cooler
FR2797039B1 (fr) * 1999-07-27 2001-10-12 Ziepack Echangeur de chaleur en module d'echange s'y rapportant
US6474408B1 (en) * 2000-08-31 2002-11-05 Honeywell International Inc. Heat exchanger with bypass seal allowing differential thermal expansion
US6536231B2 (en) * 2001-05-31 2003-03-25 Carrier Corporation Tube and shell heat exchanger for multiple circuit refrigerant system
JP4006734B2 (ja) * 2001-10-24 2007-11-14 ベール ゲーエムベーハー ウント コー カーゲー 熱交換器
US6827138B1 (en) * 2003-08-20 2004-12-07 Abb Lummus Global Inc. Heat exchanger
US7198037B2 (en) * 2004-12-14 2007-04-03 Honeywell International, Inc. Bypass for exhaust gas cooler

Also Published As

Publication number Publication date
US20070144157A1 (en) 2007-06-28
EP1690057A1 (fr) 2006-08-16
DE502004003643D1 (de) 2007-06-06
DE10352221A1 (de) 2005-06-09
BRPI0415736A (pt) 2006-12-19
WO2005047799A1 (fr) 2005-05-26

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