EP1926962A1 - Echangeur thermique, en particulier echangeur thermique pour gaz d'echappement - Google Patents

Echangeur thermique, en particulier echangeur thermique pour gaz d'echappement

Info

Publication number
EP1926962A1
EP1926962A1 EP06805687A EP06805687A EP1926962A1 EP 1926962 A1 EP1926962 A1 EP 1926962A1 EP 06805687 A EP06805687 A EP 06805687A EP 06805687 A EP06805687 A EP 06805687A EP 1926962 A1 EP1926962 A1 EP 1926962A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
coating
exhaust gas
sol
gas heat
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Withdrawn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
EP06805687A
Other languages
German (de)
English (en)
Inventor
Klaus Fischle
Dieter Gross
Oliver Mamber
Matthias Pfitzer
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 EP1926962A1 publication Critical patent/EP1926962A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • 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
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings

Definitions

  • Heat exchanger in particular exhaust gas heat exchanger
  • the invention relates to a heat exchanger, in particular an exhaust gas heat exchanger, with at least one of a medium, in particular exhaust gas, acted upon surface of metal, in particular of aluminum or stainless steel, which is provided with a coating.
  • the invention also relates to a method for producing a heat exchanger described above.
  • Exhaust gas mainly from diesel engines, leads in exhaust gas heat exchangers together with moisture and temperature to corrosion attacks on the metallic materials used.
  • temperature-resistant coatings can be used.
  • the object of the invention is to provide a heat exchanger, in particular an exhaust gas heat exchanger, with at least one of a medium, in particular of exhaust gas, acted upon surface of metal, in particular of aluminum or stainless steel, which is provided with a coating, the coating better Has properties as conventional paints and the production is safe to produce.
  • the object is in a heat exchanger, in particular an exhaust gas heat exchanger, with at least one of a medium, in particular of Exhaust gas, applied surface of metal, in particular of aluminum or stainless steel, which is provided with a coating, achieved in that the coating comprises a coating material based on nanotechnology.
  • the coating material comprises at least one nanomaterial or a nanostructure.
  • the coating is vitreous and has a very good chemical resistance.
  • a preferred embodiment of the heat exchanger is characterized in that the coating comprises a main component which is composed of an organic and an inorganic portion. Via the crosslinking temperature, the properties of the coating can be defined or varied over wide limits.
  • the heat exchanger is characterized in that the coating contains silicon.
  • organo (alkoxy) silanes are selectively hydrolyzed by using suitable catalysts with elimination of alcohols.
  • the heat exchanger is characterized in that the coating contains titanium, zirconium, aluminum, magnesium, zinc and / or calcium. Due to the different substances, the inorganic network can be selectively modified.
  • the above-mentioned object is achieved in that the coating is produced in a sol-gel process.
  • a sol for the production of nanomaterials is converted into a gel.
  • Hydrolysis and condensation reactions generate a three-dimensional network of molecules stored together in a liquid.
  • thermal process steps the gels are processed into nanomaterials or nanostructures.
  • a preferred embodiment of the method is characterized in that at least one sol is deposited on the surface to be coated. is brought.
  • the surface to be coated can be wetted with the sol in any manner.
  • Another preferred embodiment of the method is characterized in that the sol is cured to form a crosslinked polymer layer.
  • the curing is preferably carried out under the influence of temperature.
  • a heat exchanger to be coated is flooded with the coating material and emptied; the emptied heat exchanger is heated in a drying oven.
  • the heat exchanger to be coated is forcibly flooded by the coating material and then emptied. Thereafter, the heat exchanger is preferably hung so that excess coating material can completely leak without forming unwanted accumulations of coating material inside the heat exchanger. Drops adhering to the outlet of the heat exchanger are removed in a suitable manner, for example by means of compressed air or with the aid of an electrostatic precipitator.
  • the invention relates to an exhaust gas heat exchanger made of aluminum or stainless steel.
  • the exhaust gas heat exchanger has a cavity which is traversed by exhaust gas during operation of the exhaust gas heat exchanger.
  • the cavity is coated with a coating material based on nanotechnology.
  • the main component of the coating material is composed of an organic and an inorganic portion.
  • Via the crosslinking temperature the properties of the coating can be defined over wide limits. At high baking temperatures, a higher proportion The organic ingredients expelled, that is, the degree of crosslinking is higher. As a result, the corrosion resistance of the layer increases. At low stoving temperatures, the proportion of organic ingredients is higher, that is, the ductility of the coating is greater.
  • An exhaust gas heat exchanger to be coated is forcibly flooded with the coating material according to one aspect of the present invention and then emptied. Thereafter, the exhaust gas heat exchanger is suspended so that excess coating material can completely leak without forming accumulations in the interior. Adhesive drops at the outlet are removed in a suitable manner, for example by compressed air or with the aid of an electrostatic droplet stripper. Subsequently, the exhaust gas heat exchanger then passes through a drying oven.
  • ORMOCER harbors a brand of the Fraunhofer Deutschen Republic for the promotion of applied research in Kunststoff.
  • organo (alkoxy) silanes are specifically hydrolyzed by using suitable catalysts for splitting off alcohols, for example methanol, ethanol, etc.
  • suitable catalysts for splitting off alcohols for example methanol, ethanol, etc.
  • Subsequent condensation reactions lead to the formation of organically modified inorganic-oxidic structures.
  • silicon can also be partially replaced by other elements, in particular titanium, zirconium or aluminum.
  • the elements magnesium, zinc and calcium can be incorporated.
  • the aqueous-alcoholic sols are applied by flooding to the heat exchanger to be coated, which is also referred to as a heat exchanger, and thermally cured. This results in a crosslinked polymer layer.
  • the aim of the coating is, in addition to the anti-corrosive and / or water-repellent property at the same time to prevent the adhesion of dirt, particles, soot and oil films.
  • This oleophobic effect when using ORMOCER layers in a proportion of 0.1 to 10%, preferably 0.5 to 5%, in particular 1 to 2%, of Fluorosilanes can be achieved in the ORMOCER layer.
  • the incorporation of a simultaneously hydrophobic and oleophobic character of the layer is achieved by adding an alkoxysilane with highly fluorinated alkyl chains. Particularly favorable effects are achieved with silanes of the type F13 (CF 3 - (CF 2 ) S -) and F16 (CF 2 H- (CF 2 H).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention concerne un échangeur thermique, en particulier un échangeur thermique pour gaz d'échappement, comprenant au moins une surface faite de métal, en particulier d'aluminium ou d'acier inoxydable, qui est exposée à une substance, en particulier à des gaz d'échappement, et présente un revêtement. Afin d'améliorer les propriétés du revêtement, celui-ci comprend une matière de revêtement basée sur la nanotechnologie.
EP06805687A 2005-09-14 2006-09-12 Echangeur thermique, en particulier echangeur thermique pour gaz d'echappement Withdrawn EP1926962A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005043730A DE102005043730A1 (de) 2005-09-14 2005-09-14 Wärmetauscher, insbesondere Abgaswärmetauscher
PCT/EP2006/008851 WO2007031262A1 (fr) 2005-09-14 2006-09-12 Echangeur thermique, en particulier echangeur thermique pour gaz d'echappement

Publications (1)

Publication Number Publication Date
EP1926962A1 true EP1926962A1 (fr) 2008-06-04

Family

ID=37507708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06805687A Withdrawn EP1926962A1 (fr) 2005-09-14 2006-09-12 Echangeur thermique, en particulier echangeur thermique pour gaz d'echappement

Country Status (7)

Country Link
US (1) US20080245512A1 (fr)
EP (1) EP1926962A1 (fr)
JP (1) JP2009508080A (fr)
CN (1) CN101305255A (fr)
DE (1) DE102005043730A1 (fr)
RU (1) RU2430323C2 (fr)
WO (1) WO2007031262A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033222A1 (de) 2008-07-15 2010-01-21 Behr Gmbh & Co. Kg Verfahren zur Herstellung eines Wärmeübertragers und Wärmeübertrager, herstellbar nach dem Verfahren
DE102008062705A1 (de) 2008-12-18 2010-06-24 Behr Gmbh & Co. Kg Beschichtungsverfahren und Beschichtungsvorrichtung zum Herstellen eines Bauteils sowie Wärmetauscher und Verwendung des Wärmetauschers
JP5218525B2 (ja) * 2010-11-09 2013-06-26 株式会社デンソー 熱輸送流体が流通する装置
JP5934569B2 (ja) * 2012-04-27 2016-06-15 日立Ｇｅニュークリア・エナジー株式会社 保護部材付熱交換器
DE102013215386A1 (de) * 2013-08-05 2015-02-05 Behr Gmbh & Co. Kg Wärmeübertrager aus Aluminium und Verfahren zur Erzeugung einer Oberflächenbeschichtung auf einem Wärmeübertrager aus Aluminium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813709A1 (de) * 1998-03-27 1999-09-30 Inst Neue Mat Gemein Gmbh Verfahren zum Schutz eines metallischen Substrats vor Korrosion
WO2003093383A1 (fr) * 2002-04-29 2003-11-13 Institut für Neue Materialien Gemeinnützige GmbH Substrats dotes d'un revetement empechant la formation d'un biofilm

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000329497A (ja) * 1999-05-19 2000-11-30 Toyobo Co Ltd 自動車エアコン熱交換器用フィン
JP2000329495A (ja) * 1999-05-21 2000-11-30 Nissan Motor Co Ltd 空気調和装置用熱交換器およびその表面処理方法
AU1461501A (en) * 1999-12-03 2001-06-12 Caterpillar Inc. Patterned hydrophilic-oleophilic metal oxide coating and method of forming
US6890640B2 (en) * 1999-12-03 2005-05-10 Caterpillar Inc Patterned hydrophilic-oleophilic metal oxide coating and method of forming
JP2001247822A (ja) * 2000-03-06 2001-09-14 Kansai Paint Co Ltd 親水化処理用組成物及び親水化処理方法
DE10045606A1 (de) * 2000-09-15 2002-03-28 Volkswagen Ag Oligodynamische Oberflächenbeschichtung auf metallischen Werkstücken und Verfahren zur Herstellung der Beschichtung
DE20018520U1 (de) * 2000-10-28 2001-02-01 Pucel Markus Filterfreie Wärmeaustauscher mit Nano-Technologie
DE10262308B4 (de) * 2002-01-08 2009-02-05 Aloys Wobben Vorrichtung zum Handhaben von Stückgütern
DE102004011544A1 (de) * 2003-03-31 2004-10-14 Behr Gmbh & Co. Kg Wärmetauscher und Verfahren zur Oberflächenbehandlung eines solchen
EP1610911B1 (fr) * 2003-03-31 2016-05-11 MAHLE Behr GmbH & Co. KG Echangeur thermique et procede de traitement de surface d'un tel echangeur thermique
DE10323729A1 (de) * 2003-05-26 2004-12-16 Institut Für Neue Materialien Gem. Gmbh Zusammensetzung mit Nichtnewtonschem Verhalten
DE10355833A1 (de) * 2003-11-26 2005-06-23 Behr Gmbh & Co. Kg Wärmetauscher
DE10359806A1 (de) * 2003-12-19 2005-07-14 Modine Manufacturing Co., Racine Wärmeübertrager mit flachen Rohren und flaches Wärmeübertragerrohr
EP1562018A1 (fr) * 2004-02-03 2005-08-10 Siemens Aktiengesellschaft Tube d'échangeur de chaleur, échangeur de chaleur et son utilisation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813709A1 (de) * 1998-03-27 1999-09-30 Inst Neue Mat Gemein Gmbh Verfahren zum Schutz eines metallischen Substrats vor Korrosion
WO2003093383A1 (fr) * 2002-04-29 2003-11-13 Institut für Neue Materialien Gemeinnützige GmbH Substrats dotes d'un revetement empechant la formation d'un biofilm

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007031262A1 *

Also Published As

Publication number Publication date
RU2430323C2 (ru) 2011-09-27
RU2008114316A (ru) 2009-10-20
WO2007031262A1 (fr) 2007-03-22
CN101305255A (zh) 2008-11-12
JP2009508080A (ja) 2009-02-26
US20080245512A1 (en) 2008-10-09
DE102005043730A1 (de) 2007-03-22

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