WO2021148078A1 - Procédé pour appliquer un revêtement mince sur des surfaces intérieures d'évidements débouchants - Google Patents

Procédé pour appliquer un revêtement mince sur des surfaces intérieures d'évidements débouchants Download PDF

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Publication number
WO2021148078A1
WO2021148078A1 PCT/DE2021/100013 DE2021100013W WO2021148078A1 WO 2021148078 A1 WO2021148078 A1 WO 2021148078A1 DE 2021100013 W DE2021100013 W DE 2021100013W WO 2021148078 A1 WO2021148078 A1 WO 2021148078A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressed air
coating
jet
nozzle
constriction
Prior art date
Application number
PCT/DE2021/100013
Other languages
German (de)
English (en)
Inventor
Jens-Werner Kipp
Original Assignee
Kipp Jens Werner
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 Kipp Jens Werner filed Critical Kipp Jens Werner
Priority to EP21705422.0A priority Critical patent/EP4094031A1/fr
Publication of WO2021148078A1 publication Critical patent/WO2021148078A1/fr

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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
    • B05D3/042—Directing or stopping the fluid to be coated with air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/04—Coatings; Surface treatments hydrophobic

Definitions

  • the invention relates to a method for applying a thin coating to an inner surface of a through recess, in particular a through recess of a lamellar heat exchanger and / or a through hole.
  • the invention also relates to the use of the method for thin-coating internal surfaces of a lamellar heat exchanger and / or internal surfaces of through-bores
  • a thin coating of internal surfaces of lamellar heat exchangers with construction depths of typically up to 800mm is not possible. Coatings of lamellar heat exchangers, for example for the purpose of corrosion protection, are made during manufacture or when the lamellar heat exchanger is dismantled using an immersion process. Due to the process, however, the coating thickness is in a higher range. Due to the comparatively large coating thickness, the heat transfer can already be noticeably impaired. In addition, the thin coating of lamellar heat exchangers in the installed state with the known or commonly used coating agents has not been possible up to now.
  • the object of the invention is to provide a method with which the application of a thin coating can be applied to an internal surface of through bores and of lamellar heat exchangers.
  • the depth of the exchanger can be up to 800mm and more.
  • the method for applying a thin coating to an inner surface of a passage recess provides that a coating agent is introduced into a compressed air stream and thereby broken down into fine droplets and that the coating agent is then by means of a convergent-divergent jet nozzle with a constricted nozzle jet is applied to the surface to be coated at a high flow rate.
  • the output speed of the new method which is high in contrast to the usual spray methods, is at least 30 m / sec up to supersonic speed, depending on the structural depth of the deceiver or the through hole to be coated. This guarantees that the nozzle jet can also coat surfaces that are deeper.
  • the beam directed onto the surfaces runs parallel or largely parallel, that is, at an acute angle to the surface to be coated.
  • the friction of the jet on the surface nevertheless leads to the desired thin coating of the surfaces.
  • the high speed of the nozzle jet immediately removes excess material so that the coating can be applied thinly or produced.
  • the layer thickness of the surface can also be regulated.
  • the method according to the invention makes it possible to provide thin coatings with a thickness of 100 nm to 40 ⁇ m. Here it is possible to produce a specified nominal thickness with an accuracy of a maximum of 20%.
  • Another possibility of regulation is the dosage amount of the coating agent.
  • the thin coating also smooths the existing surfaces, thereby closing the pores of the surfaces. This leads to the improvement of the throughput values of compressed air or fluids.
  • the smoother surfaces are also easier to clean.
  • liquids or liquids with particles are used as coating agents.
  • hydrophobic coating agents in the area of uncovered lamellar heat exchangers outdoors, a self-cleaning effect is also achieved through rain.
  • Silazanes for example, are used as hydrophobic coating agents.
  • halogenated hydrocarbons such as PTFE or hybrids with an inorganic basic structure with organic side chains can serve as coating agents.
  • FIG. 2 shows a basic illustration of the method in the thin coating of internal surfaces of a lamellar heat exchanger.
  • the method according to the invention is illustrated using a first application example shown in FIG. 1.
  • the jet nozzle 4 which has a first connection for supplying compressed air 1 and a wide connection for supplying a coating agent 2.
  • the jet nozzle 4 is designed as a convergent-divergent jet nozzle with a constriction 5.
  • the jet nozzle 4 is used to atomize the blasting agent 2 and provides a jet 3 at the outlet at a speed of at least 30 m / sec.
  • the coating agent 2 is metered into the compressed air 1 at a distance 6 of 40 mm in front of the constriction 5 of the jet nozzle 4.
  • the compressed air 1 preferably has a dew point of at least 3 ° C.
  • a pressure of the metered in coating agent 2 is preferably greater than a pressure of the supplied compressed air 1.
  • the nozzle jet 3 is directed onto a jacket 8 of a roller which has a multiplicity of through recesses 9.
  • the passage recesses 9 provide internal surfaces 10 to which a thin coating with a thickness in the range from 100 nm to 40 ⁇ m is applied.
  • the inner surface 10 extends parallel to a jet direction 7 of the nozzle jet 3, which is directed onto the jacket 8 of the roller.
  • the nozzle jet 3 can be directed at an acute angle 11 onto the inner surfaces 10 of the through cutouts 9. The acute angle 11 should - in relation to the beam direction 7 - be smaller than 30 °.
  • Fig. 2 shows a second application example for the method according to the invention.
  • the inner surfaces 9 of a lamellar heat exchanger 12 are thinly coated, with adjacent lamellas 13 of the lamellar heat exchanger 12 forming the through cutouts 9.

Abstract

L'invention concerne un procédé pour appliquer un revêtement mince sur une surface (10) intérieure d'un évidement débouchant (9), en particulier d'un évidement débouchant (9) d'un échangeur de chaleur à lamelles (12) et/ou d'un trou débouchant, un agent de revêtement (2) étant introduit dans un flux d'air comprimé (1) et ainsi décomposé en gouttelettes très fines, puis appliqué sur la surface (10) à revêtir au moyen d'un jet (3) produit par une buse de projection convergente-divergente (4) présentant un étranglement (5) à une vitesse d'écoulement élevée.
PCT/DE2021/100013 2020-01-20 2021-01-11 Procédé pour appliquer un revêtement mince sur des surfaces intérieures d'évidements débouchants WO2021148078A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21705422.0A EP4094031A1 (fr) 2020-01-20 2021-01-11 Procédé pour appliquer un revêtement mince sur des surfaces intérieures d'évidements débouchants

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102020101229 2020-01-20
DE102020101229.2 2020-01-20
DE102020127076.3 2020-10-14
DE102020127076.3A DE102020127076A1 (de) 2020-01-20 2020-10-14 Verfahren zur Dünnbeschichtung innenliegender Oberflächen von Durchgangsausnehmungen

Publications (1)

Publication Number Publication Date
WO2021148078A1 true WO2021148078A1 (fr) 2021-07-29

Family

ID=76650423

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2021/100013 WO2021148078A1 (fr) 2020-01-20 2021-01-11 Procédé pour appliquer un revêtement mince sur des surfaces intérieures d'évidements débouchants

Country Status (3)

Country Link
EP (1) EP4094031A1 (fr)
DE (1) DE102020127076A1 (fr)
WO (1) WO2021148078A1 (fr)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2276106A1 (fr) * 1974-06-26 1976-01-23 Cegedur Procede de vernissage des parois internes d'un tube d'aluminium de grande longueur
US4786060A (en) * 1987-09-16 1988-11-22 Mcdonnell Douglas Corporation Sealant spray applicator system and method employing same
JPH03133632A (ja) * 1989-10-20 1991-06-06 Kobe Steel Ltd Ｕ字型熱交換器用伝熱管の製造方法
US5472738A (en) * 1991-03-25 1995-12-05 Alfa Laval Thermal Ab Method of providing heat transfer plates with a layer of a surface protecting material
US6861101B1 (en) * 2002-01-08 2005-03-01 Flame Spray Industries, Inc. Plasma spray method for applying a coating utilizing particle kinetics
EP2289630A1 (fr) * 2009-08-27 2011-03-02 General Electric Company Appareil et procédé de dépôt de revêtements
WO2011121562A1 (fr) * 2010-04-01 2011-10-06 Basf Se Procédé de préparation de monolithes recouverts
EP2471605A1 (fr) * 2011-01-03 2012-07-04 General Electric Company Buse à utiliser avec un pistolet pulvérisateur
DE102011113536A1 (de) * 2011-09-15 2013-03-21 Jens-Werner Kipp Verfahren zur Herstellung einer Schutzschicht für Trägervorrichtungen, auf denen Werkstücke montiert werden, um diese Werkstücke einer Oberflächenbehandlung zu unterziehen
DE102013109124A1 (de) * 2013-08-23 2015-02-26 Jens Werner Kipp Verfahren und Vorrichtung zur Reinigung von Flächen eines Lamellenwärmetauschers
WO2016210064A1 (fr) * 2015-06-23 2016-12-29 Moog Inc. Buse de pulvérisation à froid directionnelle
EP3205407A1 (fr) * 2016-02-09 2017-08-16 IPR-Intelligente Peripherien für Roboter GmbH Procede et installation destines a revetir les parois interieures d'un espace creux a l'aide d'une couche de protection anticorrosion a base de cire
WO2018045457A1 (fr) * 2016-09-07 2018-03-15 Burgess Alan W Torche de pulvérisation à grande vitesse pour la pulvérisation de surfaces internes
WO2018077326A1 (fr) * 2016-10-31 2018-05-03 Mycon Gmbh Agencement d'installation et procédé de nettoyage automatique d'échangeurs de chaleur à lamelles
US20190330734A1 (en) * 2018-04-25 2019-10-31 The Board Of Trustees Of The University Of Illinois Method of coating heat transfer components to impart superhydrophobicity

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2276106A1 (fr) * 1974-06-26 1976-01-23 Cegedur Procede de vernissage des parois internes d'un tube d'aluminium de grande longueur
US4786060A (en) * 1987-09-16 1988-11-22 Mcdonnell Douglas Corporation Sealant spray applicator system and method employing same
JPH03133632A (ja) * 1989-10-20 1991-06-06 Kobe Steel Ltd Ｕ字型熱交換器用伝熱管の製造方法
US5472738A (en) * 1991-03-25 1995-12-05 Alfa Laval Thermal Ab Method of providing heat transfer plates with a layer of a surface protecting material
US6861101B1 (en) * 2002-01-08 2005-03-01 Flame Spray Industries, Inc. Plasma spray method for applying a coating utilizing particle kinetics
EP2289630A1 (fr) * 2009-08-27 2011-03-02 General Electric Company Appareil et procédé de dépôt de revêtements
WO2011121562A1 (fr) * 2010-04-01 2011-10-06 Basf Se Procédé de préparation de monolithes recouverts
EP2471605A1 (fr) * 2011-01-03 2012-07-04 General Electric Company Buse à utiliser avec un pistolet pulvérisateur
DE102011113536A1 (de) * 2011-09-15 2013-03-21 Jens-Werner Kipp Verfahren zur Herstellung einer Schutzschicht für Trägervorrichtungen, auf denen Werkstücke montiert werden, um diese Werkstücke einer Oberflächenbehandlung zu unterziehen
DE102013109124A1 (de) * 2013-08-23 2015-02-26 Jens Werner Kipp Verfahren und Vorrichtung zur Reinigung von Flächen eines Lamellenwärmetauschers
WO2016210064A1 (fr) * 2015-06-23 2016-12-29 Moog Inc. Buse de pulvérisation à froid directionnelle
EP3205407A1 (fr) * 2016-02-09 2017-08-16 IPR-Intelligente Peripherien für Roboter GmbH Procede et installation destines a revetir les parois interieures d'un espace creux a l'aide d'une couche de protection anticorrosion a base de cire
WO2018045457A1 (fr) * 2016-09-07 2018-03-15 Burgess Alan W Torche de pulvérisation à grande vitesse pour la pulvérisation de surfaces internes
WO2018077326A1 (fr) * 2016-10-31 2018-05-03 Mycon Gmbh Agencement d'installation et procédé de nettoyage automatique d'échangeurs de chaleur à lamelles
US20190330734A1 (en) * 2018-04-25 2019-10-31 The Board Of Trustees Of The University Of Illinois Method of coating heat transfer components to impart superhydrophobicity

Also Published As

Publication number Publication date
EP4094031A1 (fr) 2022-11-30
DE102020127076A1 (de) 2021-07-22

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