EP2950031A1 - Échangeur thermique de gaz d'échappement en acier duplex - Google Patents

Échangeur thermique de gaz d'échappement en acier duplex Download PDF

Info

Publication number: EP2950031A1
Authority: EP; European Patent Office
Prior art keywords: heat exchanger; exhaust gas; gas heat; exchanger according; shells
Prior art date: 2014-05-14
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

EP15167647.5A

Other languages

German (de)

English (en)

Other versions

EP2950031B1 (fr

Inventor

Eugen Aul

Rainer Voesgen

Fabian Fricke

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.)

Benteler Automobiltechnik GmbH

Original Assignee

Benteler Automobiltechnik 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.)

2014-05-14

Filing date

2015-05-13

Publication date

2015-12-02

2015-05-13 Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH

2015-12-02 Publication of EP2950031A1 publication Critical patent/EP2950031A1/fr

2016-12-21 Application granted granted Critical

2016-12-21 Publication of EP2950031B1 publication Critical patent/EP2950031B1/fr

Status Not-in-force legal-status Critical Current

2035-05-13 Anticipated expiration legal-status Critical

Links

229910000831 Steel Inorganic materials 0.000 title claims abstract description 27
239000010959 steel Substances 0.000 title claims abstract description 27
239000000463 material Substances 0.000 claims abstract description 19
238000003475 lamination Methods 0.000 claims abstract description 5
239000007789 gas Substances 0.000 claims 6
UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 2
239000003546 flue gas Substances 0.000 claims 2
239000000956 alloy Substances 0.000 claims 1
229910045601 alloy Inorganic materials 0.000 claims 1
238000000034 method Methods 0.000 description 10
230000008569 process Effects 0.000 description 8
238000005476 soldering Methods 0.000 description 8
238000002485 combustion reaction Methods 0.000 description 7
241000446313 Lamella Species 0.000 description 6
229910000679 solder Inorganic materials 0.000 description 5
238000005260 corrosion Methods 0.000 description 4
230000007797 corrosion Effects 0.000 description 4
238000010168 coupling process Methods 0.000 description 4
239000000446 fuel Substances 0.000 description 4
238000005304 joining Methods 0.000 description 4
230000008878 coupling Effects 0.000 description 3
238000005859 coupling reaction Methods 0.000 description 3
230000008901 benefit Effects 0.000 description 2
238000005219 brazing Methods 0.000 description 2
238000001816 cooling Methods 0.000 description 2
238000004519 manufacturing process Methods 0.000 description 2
229910000851 Alloy steel Inorganic materials 0.000 description 1
244000287680 Garcinia dulcis Species 0.000 description 1
238000010521 absorption reaction Methods 0.000 description 1
239000000654 additive Substances 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
229910001566 austenite Inorganic materials 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
230000008859 change Effects 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
230000000694 effects Effects 0.000 description 1
238000004049 embossing Methods 0.000 description 1
239000003344 environmental pollutant Substances 0.000 description 1
239000012530 fluid Substances 0.000 description 1
UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
231100000719 pollutant Toxicity 0.000 description 1
230000009467 reduction Effects 0.000 description 1
125000006850 spacer group Chemical group 0.000 description 1
239000000126 substance Substances 0.000 description 1
229910000859 α-Fe Inorganic materials 0.000 description 1

Images

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
- 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
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like 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
- 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
- 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
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0006—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the plate-like or laminated conduits being enclosed within a pressure vessel
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
- F28F21/083—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys from stainless steel
- 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

Definitions

the present invention relates to an exhaust gas heat exchanger for a motor vehicle according to the features in the preamble of patent claim 1.
the exhaust gas has temperatures of more than 500 ° C up to 1000 ° C.
Such an exhaust gas heat exchanger is exposed directly to the high temperatures of the exhaust gas, so that it can lead to significant thermal fluctuations in the operation of the exhaust gas heat exchanger but also in the cold start behavior of an internal combustion engine.
the exhaust gas itself has highly corrosive properties, so that over the duration of the application area corresponding to the material, in particular the lateral surfaces and the coupling points of the exhaust gas heat exchanger are attacked.
a corresponding exhaust gas heat exchanger is for example from the DE 10 2006 029 110 A1 known.
Object of the present invention is to reduce an exhaust gas heat exchanger in its component weight and in particular in the production costs, with at least constant or increased use duration and heat transfer properties.
the exhaust gas heat exchanger according to the invention is for a motor vehicle and has an outer shell and plates arranged one above the other in layers one above the other. It is characterized in that an internal lamellar sheet of austenitized steel material in an inner cassette made of ferritic steel material or is arranged from duplex steel and in turn at least two of the inner cassettes are arranged one above the other like a plate and the outer shell is formed around the inner cassettes encompassing duplex steel.
a plate heat exchanger which has a weight saving of up to 30% and thus an optimal tuning is realized by using different materials.
the wall thicknesses can be reduced, with at least constant strength and corresponding longevity and corrosion resistance.
a possible additional price for the material used in the casing is compensated by the lower percentage use, so that an overall corrosion-resistant exhaust gas heat exchanger is provided.
the choice of material that is different from one another makes it possible to optimally compensate for different thermal expansions, in particular also taking account of coupling points existing between the components, in particular soldered seams.
a first flow channel is formed between an inner lateral surface of the shell and an outer lateral surface of the inner cassettes and a second flow channel in the inner cassettes themselves.
a lamination sheet is arranged in the inner cassette itself.
the lamella plate itself has a wavy or else a sawtooth-shaped configuration in cross-section.
the lamella plate is made of austenitic steel material and positioned in the inner cassette.
the lamella plate itself may also be coupled to the inner cassette, for example by a cohesive joining method and in particular a soldering method.
the inner cassette is double-shelled by two shells, wherein both shells are soldered together. Both shells essentially have a cross-sectionally U-shaped configuration, wherein these are then plugged into one another in a vertical direction from above and below with the inclusion of the lamination sheet and coupled with a cohesive joining process, in particular a soldering process. At the same time then also the lamellae can be coupled to the inner shell.
the inner cassettes have outwardly directed Abstandsbuckel.
the respective inner cassettes which are located completely on the outside, then abut against the inner circumferential surface of the shell with their spacing humps.
the shell also has inwardly directed distance humps.
the distance bumps continue to increase the surface area available for each heat exchanger, which further increases the cooling capacity.
the ends of the inner cassettes are designed to converge. As a result, the cross section for the entering or exiting exhaust gas is then kept as large as possible in each case on the exhaust gas inlet and outlet side, which benefits a very low pressure loss of the exhaust gas heat exchanger according to the invention.
the pressure loss is additionally reduced, with at least the same cooling capacity.
the distance hump which can also be formed as bumps, thereby expanding during a soldering process, so that a high-quality solder joint comes about.
the sheath is particularly preferably in turn formed as a two-shell shell shell, wherein both shells are soldered together.
the shells of the shell are configured in a U-shaped cross-section and with the respective free ends of the U plugged into each other and via a thermal joining process, in particular soldering, coupled together.
duplex steel of the shell and in the case of the use of duplex steel in an inner cassette for these a duplex steel alloy of 1.4462 or 1.4362 or 1.4162 is used.
An optimum of freedom from deformation, corrosion resistance and resistance to the effects of temperature occurs here.
Brazing is preferably used as the brazing process, which in turn is carried out in particular in a continuous or vacuum furnace.
a solder additive is used on a nickel-iron basis.
Ferrite and austenite are each present at 50% pro rata.
a soldering temperature between 980 ° C and 1100 ° C.
holders made of duplex steel are arranged on the envelope.
the exhaust gas heat exchanger according to the invention is then coupled to an internal combustion engine.
the holders themselves can be coupled to the casing by materially joining or, preferably, also be formed integrally and with the same material on the casing.
the components of the shell of the inner cassette and / or the lamella plate are then produced as Blechumformbaumaschine, in particular deep-drawn components.
an exhaust gas heat exchanger 1 is shown in longitudinal section and cross-sectional view.
the exhaust gas heat exchanger 1 is designed as a plate heat exchanger, wherein a first flow channel 2 is formed between the inner circumferential surface 3 of an outer shell 4 and the outer circumferential surface 5 of the inner cassettes 6 arranged in the shell 4.
a second flow channel 7 is then formed in the inner cassettes 6, wherein in each case a fin sheet 8 is also arranged to increase the available there for heat absorption surface.
the exhaust gas A flow in the inner cassette 6, wherein a corresponding amount of heat on the lamella 8 and the inner circumferential surface 9 of the inner cassette 6 is received and passed through the wall of the inner cassette 6 to a fluid not shown in detail in the first flow channel 2.
the lamination plate 8 is formed of austenitic material
the inner cassette 6 is formed of ferritic material or duplex steel and the sheath 4 of duplex steel.
the choice of whether the inner cassette 6 duplex steel or ferritic steel material is used depends on the expected vibration load. If a relatively low vibration load is observed, a ferritic steel material is used, whereas with a high expected vibration load a duplex steel is used.
the sheath 4 is double-shelled and has a first shell 10 and a second shell 11.
holders 12 are coupled to secure the exhaust gas heat exchanger 1 to a not shown engine or an internal combustion engine.
the first shell 10 and the second shell 11 are each U-shaped in cross-section and inserted into each other in opposite directions, so that an optimum solder gap 13 is adjusted at a joint to produce a solder seam with a particularly high quality in a subsequent soldering process, so that they just under durability aspects, a high density and resistance to vibration brings with it.
the holder 12 itself can be integrally formed on the outside of the shell 4 and material uniform be or be formed in several parts, so that they are coupled by means of a coupling method not shown to the shell 4.
hump 14 which may also be in the form of a bulge or a bulge.
the spacer bosses 14 can be introduced by embossing into the respective shell of the inner cassette 6 or the shell 4. These then serve to form a spacing of the inner cassettes 6 with each other, which in turn leads to the formation of the respective first flow channel 2.
at the ends of the inner cassettes 6 are shown in each case to each other outwardly flared tapered ends 15 each two adjacent inner cassettes 6 to each other. These outwardly flared ends 15 are soldered together. As a result, the tightness between the first flow channel 2 and the second flow channel 7 is produced at the edge. The outwardly flared ends 15 also expand during the soldering operation, resulting in a good quality of solder joint therebetween.

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)

EP15167647.5A 2014-05-14 2015-05-13 Échangeur thermique de gaz d'échappement en acier duplex Not-in-force EP2950031B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102014106807.6A DE102014106807B4 (de)	2014-05-14	2014-05-14	Abgaswärmetauscher aus Duplexstahl

Publications (2)

Publication Number	Publication Date
EP2950031A1 true EP2950031A1 (fr)	2015-12-02
EP2950031B1 EP2950031B1 (fr)	2016-12-21

Family

ID=53385454

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP15167647.5A Not-in-force EP2950031B1 (fr)	2014-05-14	2015-05-13	Échangeur thermique de gaz d'échappement en acier duplex

Country Status (5)

Country	Link
US (1)	US20150330719A1 (fr)
EP (1)	EP2950031B1 (fr)
JP (1)	JP6280520B2 (fr)
DE (1)	DE102014106807B4 (fr)
ES (1)	ES2611011T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2018124253A1 (fr) *	2016-12-26	2018-07-05	株式会社ティラド	Structure assemblée par brasage au nickel
PL3388773T3 (pl) *	2017-04-14	2021-02-08	Valeo Autosystemy Sp. Z.O.O.	Wymiennik ciepła dla pojazdów silnikowych

Citations (5)

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Publication number	Priority date	Publication date	Assignee	Title
WO2007014617A1 (fr) *	2005-07-29	2007-02-08	Linde Aktiengesellschaft	Echangeur de chaleur enroule comportant differents materiaux
DE102005055481A1 (de) *	2005-11-18	2007-05-24	Behr Gmbh & Co. Kg	Wärmetauscher für einen Verbrennungsmotor
DE102006029110A1 (de)	2006-06-22	2007-12-27	Linde Ag	Wärmetauscher
JP2011157589A (ja) *	2010-02-01	2011-08-18	Maruyasu Industries Co Ltd	ステンレス鋼製品の耐食性改善方法
EP2711659A2 (fr) *	2012-09-19	2014-03-26	Benteler Automobiltechnik GmbH	Procédé de fabrication d'un échangeur thermique

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JPS633089A (ja) *	1986-06-24	1988-01-08	Nippon Kokan Kk <Nkk>	石炭乾燥機
US7004237B2 (en) *	2001-06-29	2006-02-28	Delaware Capital Formation, Inc.	Shell and plate heat exchanger
DE10214467A1 (de) *	2002-03-30	2003-10-09	Modine Mfg Co	Abgaswärmetauscher für Kraftfahrzeuge
US20040003916A1 (en) *	2002-07-03	2004-01-08	Ingersoll-Rand Energy Systems, Inc.	Unit cell U-plate-fin crossflow heat exchanger
JP2005055153A (ja) *	2003-08-07	2005-03-03	Toyota Motor Corp	熱交換器
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KR20080089418A (ko) *	2005-12-21	2008-10-06	엑손모빌 리서치 앤드 엔지니어링 컴퍼니	파울링 감소를 위한 내식성 물질, 내식성 및 내파울링성이개선된 열 전달 부품, 및 파울링 감소 방법
JP4773541B2 (ja) *	2009-04-09	2011-09-14	マルヤス工業株式会社	多管式熱交換器
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JP5585558B2 (ja) *	2011-09-24	2014-09-10	株式会社デンソー	排気熱交換装置

2014
- 2014-05-14 DE DE102014106807.6A patent/DE102014106807B4/de not_active Expired - Fee Related
2015
- 2015-05-11 JP JP2015096370A patent/JP6280520B2/ja not_active Expired - Fee Related
- 2015-05-13 EP EP15167647.5A patent/EP2950031B1/fr not_active Not-in-force
- 2015-05-13 US US14/711,612 patent/US20150330719A1/en not_active Abandoned
- 2015-05-13 ES ES15167647.5T patent/ES2611011T3/es active Active

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2007014617A1 (fr) *	2005-07-29	2007-02-08	Linde Aktiengesellschaft	Echangeur de chaleur enroule comportant differents materiaux
DE102005055481A1 (de) *	2005-11-18	2007-05-24	Behr Gmbh & Co. Kg	Wärmetauscher für einen Verbrennungsmotor
DE102006029110A1 (de)	2006-06-22	2007-12-27	Linde Ag	Wärmetauscher
JP2011157589A (ja) *	2010-02-01	2011-08-18	Maruyasu Industries Co Ltd	ステンレス鋼製品の耐食性改善方法
EP2711659A2 (fr) *	2012-09-19	2014-03-26	Benteler Automobiltechnik GmbH	Procédé de fabrication d'un échangeur thermique

Also Published As

Publication number	Publication date
JP6280520B2 (ja)	2018-02-14
DE102014106807A1 (de)	2015-11-19
DE102014106807B4 (de)	2017-12-21
US20150330719A1 (en)	2015-11-19
ES2611011T3 (es)	2017-05-04
EP2950031B1 (fr)	2016-12-21
JP2015219005A (ja)	2015-12-07

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