DE4120563C2 - - Google Patents
Info
- Publication number
- DE4120563C2 DE4120563C2 DE4120563A DE4120563A DE4120563C2 DE 4120563 C2 DE4120563 C2 DE 4120563C2 DE 4120563 A DE4120563 A DE 4120563A DE 4120563 A DE4120563 A DE 4120563A DE 4120563 C2 DE4120563 C2 DE 4120563C2
- Authority
- DE
- Germany
- Prior art keywords
- heat exchanger
- coating
- seconds
- minutes
- wall
- 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.)
- Expired - Fee Related
Links
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 7
- 239000000049 pigment Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229920002050 silicone resin Polymers 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011253 protective coating Substances 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 230000000379 polymerizing effect Effects 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 238000007865 diluting Methods 0.000 claims 1
- 239000011241 protective layer Substances 0.000 claims 1
- 230000002378 acidificating effect Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- 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
-
- 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
- F28F21/02—Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
-
- 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
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper 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
- F28F21/089—Coatings, claddings or bonding layers made from metals or metal alloys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
Diese Erfindung betrifft einen Wärmetauscher aus Kupfer für an der Wand montierbare Heizkessel, der wirkungsvoll gegen Korrosion durch saures Kondensat und hohe Temperaturen geschützt ist, was dem Wärmetauscher folglich einen guten Wirkungsgrad und eine lange Lebensdauer gibt.This invention relates to a copper heat exchanger for wall-mounted boiler, effective against corrosion what is protected by acidic condensate and high temperatures consequently the heat exchanger has a good efficiency and one long life there.
Die Erfindung betrifft auch das bestimmte Verfahren zum Auftragen der notwendigen Beschichtung auf den Wärmetauscher, damit er geschützt wird.The invention also relates to the particular method of application the necessary coating on the heat exchanger so that it is protected.
Beschichtungen zum Schutz für Wärmetauscher für an der Wand montierbare Heizkessel sind aus dem Stand der Technik schon bekannt und bestehen im allgemeinen aus Silikonharzen mit Aluminiumpigmenten.Coatings for protection of heat exchangers for on the wall Mountable boilers are already state of the art known and generally consist of silicone resins Aluminum pigments.
Die bekannten Aluminium-Silikonbeschichtungen ergeben einen wirkungsvollen Schutz gegen hohe Temperaturen aber haben den Nachteil, daß sie, wegen der chemischen Eigenschaften der Aluminiumpigmente, nicht genauso wirkungsvoll gegen Kondensat sind, da die Aluminiumpigmente bekanntermaßen leicht durch saure Lösungen angegriffen werden und sich in Folge dessen verschlech tern, was zum Verlust der Schutzbarriere gegen Korrosion für das darunterliegende Kupfer führt. The well-known aluminum-silicone coatings result in one effective protection against high temperatures Disadvantage that, because of the chemical properties of the Aluminum pigments, not as effective against condensate because the aluminum pigments are known to be slightly acidic Solutions are attacked and deteriorate as a result tern, which leads to the loss of the protective barrier against corrosion for the underlying copper leads.
Das momentane Bestreben nach höchst wirkungsvollen, an der Wand montierbaren Heizkesseln erhöht die Problematik der Korrosion von Wärmetauschern aus Kupfer durch saures Kondensat und hebt so die Unzulänglichkeiten der bekannten Beschichtungen hervor.The current pursuit of highly effective, on the wall mountable boilers increases the problem of corrosion of Heat exchangers made of copper with acidic condensate, thus lifting the Shortcomings of the known coatings.
Die Aufgabe der vorliegenden Erfindung ist es, die Nachteile durch das Vorsehen einer Beschichtung für Wärmetauscher aus Kupfer für an der Wand montierbare Heizkessel zu überwinden, die außer, daß sie gegen hohe Temperaturen resistent ist, wie sie in einem modernen, an der Wand montierbaren Heizkessel vorherr schen, eine hoch wirkungsvolle antikorrosive Barriere erzeugt, die gegen das saure Kondensat schützt, das im speziellen in hoch wirkungsvollen, an der Wand montierbaren Heizkesseln vorhanden ist.The object of the present invention is to overcome the disadvantages by providing a coating for heat exchangers Copper for wall-mounted boilers to overcome that except that it is resistant to high temperatures, as in a modern, wall-mounted boiler creates a highly effective anti-corrosive barrier, which protects against the acidic condensate, which in particular in high effective, wall-mounted boilers available is.
Dies wird im wesentlichen durch das Ersetzen der Aluminiumpigmen te durch andere Schutzpigmente erreicht, die inert gegen die aggressive Wirkung von sauren Kondensaten sind, so wie z. B. ein Gemisch aus Eisenoxid und Graphit, das ergibt zu den Vorteilen für die Beschichtung und folglich für den Wärmetauscher zusätz lich eine schwarze Einfärbung, die den Wärmetransport erhöht und erleichtert.This is essentially due to the replacement of the aluminum pigments achieved by other protective pigments that are inert to the are aggressive effects of acidic condensates, such as. B. a Mixture of iron oxide and graphite, that gives the advantages for the coating and consequently for the heat exchanger Lich a black color, which increases the heat transfer and facilitated.
Folglich ist die Schutzbeschichtung für den Wärmetauscher aus Kupfer für an der Wand montierbare Heizkessel, die aus Silikon harzen hergestellt werden, dadurch gekennzeichnet, daß sie Pigmente aus einem Gemisch aus Eisenoxid und Graphit enthält.As a result, the protective coating for the heat exchanger is made Copper for wall-mounted boilers made of silicone resins are produced, characterized in that they Contains pigments from a mixture of iron oxide and graphite.
Wie experimentell gefunden wurde, hängt, wegen der komplexen Geometrie des Wärmetauschers, der Wirkungsgrad von solch einer Schutzbeschichtung stark von einer Auftragung in einem Tauchver fahren ab, das die Arbeitsparameter streng begrenzt.How experimentally found depends on the complex Geometry of the heat exchanger, the efficiency of such Protective coating heavily from an application in an immersion depart, which strictly limits the working parameters.
Im Detail ist das Verfahren zum Aufbringen der Beschichtung auf
den Wärmetauscher aus Kupfer für an der Wand montierbare
Heizkessel, das ein Tauchverfahren ist, durch folgende Schritte
gekennzeichnet:
Einstellen der Ford-Becher Nr. 4-Viskosität der Beschichtung
durch eine geeignete Verdünnung mit einem Lösungsmittel innerhalb
eines Bereichs von 40 bis 55 Sekunden;
Halten des Wärmetauschers, damit er geschützt wird, in einem
herkömmlich aufgerührten Beschichtungsbad bei der Viskosität für
eine Zeitdauer von 20 bis 30 Sekunden;
Trocknen der auf den Wärmetauscher aufgetragenen Beschichtungslage
an der Luft für eine Zeitdauer nicht geringer als
30 min; und
schließlich Polymerisieren der Beschichtungslage in einem Ofen
bei 100°C bis 190°C für eine Zeitdauer nicht kürzer als 30
Minuten.In detail, the process for applying the coating to the copper heat exchanger for wall-mounted boilers, which is an immersion process, is characterized by the following steps:
Adjusting the Ford # 4 cup viscosity of the coating by appropriate dilution with a solvent within a range of 40 to 55 seconds;
Holding the heat exchanger to be protected in a conventionally stirred coating bath at viscosity for a period of 20 to 30 seconds;
Air drying the coating layer applied to the heat exchanger for a period not less than 30 min; and
finally polymerize the coating layer in an oven at 100 ° C to 190 ° C for a period not less than 30 minutes.
Außergewöhnlich gute Ergebnisse im Experiment in Bezug auf einen wirkungsvoll geschützten Wärmetauscher und in Folge dessen, lange Lebensdauer wurden erreicht durch das Eintauchen des Wärmetauschers für 20 Sekunden in ein Bad aus Silikonharz mit zugesetztem Eisenoxid und Graphit mit einer Ford-Becher Nr. 4-Viskosität von 42 Sekunden, dann Trocknen der auf den Wärmetau scher aufgetragenen Beschichtungslage 30 Minuten lang an Luft und schließlich durch Polymerisieren der Beschichtungslage in einem Ofen für 30 Minuten bei 165°C.Exceptionally good results in experiment with one effectively protected heat exchanger and as a result, long Lifespan was achieved by immersing the Heat exchanger in a silicone resin bath for 20 seconds added iron oxide and graphite with a Ford cup no. 4 viscosity of 42 seconds, then drying on the heat rope sheared coating layer in air for 30 minutes and finally by polymerizing the coating layer in an oven for 30 minutes at 165 ° C.
Claims (3)
Einstellen der Ford-Becher Nr. 4-Viskosität der Beschichtung durch geeignetes Verdünnen mit einem Lösungsmittel in einem Bereich von 40 bis 55 Sekunden;
Halten des zu beschichtenden Wärmetauschers in einem herkömmlich aufgerührten Beschichtungsbad bei dieser Viskosität für eine Zeitdauer von 20 bis 30 Sekunden;
Trocknen der auf den Wärmetauscher aufgebrachten Beschichtungslage an der Luft für eine Zeitdauer von nicht weniger als 30 Minuten; und
schließlich Polymerisieren der Beschichtungslage in einem Ofen bei 100°C bis 190°C für eine Zeitdauer nicht kürzer als 30 Minuten.2. A method of applying the protective layer according to claim 1 to the copper heat exchanger for a wall-mounted boiler, characterized by the following successive steps:
Adjusting the Ford # 4 cup viscosity of the coating by appropriately diluting with a solvent in a range of 40 to 55 seconds;
Holding the heat exchanger to be coated in a conventionally stirred coating bath at this viscosity for a period of 20 to 30 seconds;
Air drying the coating layer applied to the heat exchanger for a period of not less than 30 minutes; and
finally polymerize the coating layer in an oven at 100 ° C to 190 ° C for a period not less than 30 minutes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT02073990A IT1248980B (en) | 1990-06-22 | 1990-06-22 | PERFECTED COPPER HEAT EXCHANGER FOR WALL BOILERS |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4120563A1 DE4120563A1 (en) | 1992-01-02 |
DE4120563C2 true DE4120563C2 (en) | 1993-04-29 |
Family
ID=11171333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4120563A Granted DE4120563A1 (en) | 1990-06-22 | 1991-06-21 | COPPER HEAT EXCHANGER FOR WALL MOUNTABLE BOILERS |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE1005573A3 (en) |
CH (1) | CH682258A5 (en) |
DE (1) | DE4120563A1 (en) |
ES (1) | ES2048032B1 (en) |
FR (1) | FR2663725B1 (en) |
GB (1) | GB2245276B (en) |
IT (1) | IT1248980B (en) |
NL (1) | NL193471C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1300543C (en) * | 2003-10-22 | 2007-02-14 | 北京化工大学 | Method for corrosion resistant protection of condensed water system |
DE102006054723A1 (en) * | 2006-11-21 | 2008-05-29 | Behr Gmbh & Co. Kg | Heat exchanger, in particular exhaust gas heat exchanger |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3380836A (en) * | 1965-08-13 | 1968-04-30 | Interchem Corp | Corrosion inhibiting pigment |
ES364354A1 (en) * | 1968-03-05 | 1970-12-16 | Hutter Kg S | Treatment of metal surfaces |
DK132333C (en) * | 1973-01-09 | 1976-04-26 | J Hardenfelt | FILLER OR COATING MIXTURE WITH METAL LOOKING EFFECT |
JPS5690853A (en) * | 1979-12-25 | 1981-07-23 | Toray Silicone Co Ltd | Silicone rubber composition |
NL8204731A (en) * | 1982-12-07 | 1984-07-02 | Pyrotec Nv | INSTALLATION FOR THERMAL CRACKING OF A HYDROCARBON OUTPUT MATERIAL TO OLEGINS, TUBE HEAT EXCHANGER USED IN SUCH INSTALLATION AND METHOD FOR MANUFACTURING A TUBE HEAT EXCHANGER. |
JPS60171349A (en) * | 1984-02-16 | 1985-09-04 | Matsushita Electric Ind Co Ltd | Heat exchanger |
US4582727A (en) * | 1984-03-20 | 1986-04-15 | Amax Inc. | Varnish-bonded, carbon-coated metal products |
DK559887A (en) * | 1986-11-28 | 1988-05-29 | Hoffmann La Roche | PROCEDURE FOR THE PREPARATION OF CARBINOOL DERIVATIVES |
JPH024195A (en) * | 1988-06-20 | 1990-01-09 | Furukawa Electric Co Ltd:The | Copper or copper alloy u-tube coated with inner surface anti-corrosion coating film for heat exchanger |
-
1990
- 1990-06-22 IT IT02073990A patent/IT1248980B/en active IP Right Grant
-
1991
- 1991-06-17 GB GB9113025A patent/GB2245276B/en not_active Expired - Fee Related
- 1991-06-17 CH CH1793/91A patent/CH682258A5/it not_active IP Right Cessation
- 1991-06-19 BE BE9100591A patent/BE1005573A3/en not_active IP Right Cessation
- 1991-06-20 FR FR919107590A patent/FR2663725B1/en not_active Expired - Fee Related
- 1991-06-20 ES ES09101666A patent/ES2048032B1/en not_active Expired - Lifetime
- 1991-06-21 DE DE4120563A patent/DE4120563A1/en active Granted
- 1991-06-21 NL NL9101073A patent/NL193471C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BE1005573A3 (en) | 1993-11-09 |
FR2663725B1 (en) | 1994-03-04 |
NL193471C (en) | 1999-11-02 |
IT1248980B (en) | 1995-02-11 |
GB9113025D0 (en) | 1991-08-07 |
IT9020739A0 (en) | 1990-06-22 |
DE4120563A1 (en) | 1992-01-02 |
ES2048032B1 (en) | 1994-10-01 |
CH682258A5 (en) | 1993-08-13 |
NL9101073A (en) | 1992-01-16 |
ES2048032A1 (en) | 1994-03-01 |
FR2663725A1 (en) | 1991-12-27 |
GB2245276A (en) | 1992-01-02 |
IT9020739A1 (en) | 1991-12-22 |
NL193471B (en) | 1999-07-01 |
GB2245276B (en) | 1994-04-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8125 | Change of the main classification |
Ipc: F28F 19/04 |
|
D2 | Grant after examination | ||
8363 | Opposition against the patent | ||
8365 | Fully valid after opposition proceedings | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: SAVIO CALDAIE S.P.A., VERONA, IT |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: BIASI S.P.A., VERONA, IT |
|
8339 | Ceased/non-payment of the annual fee |