EP0087026A1 - Fuel heated water reservoir - Google Patents

Fuel heated water reservoir Download PDF

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Publication number
EP0087026A1
EP0087026A1 EP83101048A EP83101048A EP0087026A1 EP 0087026 A1 EP0087026 A1 EP 0087026A1 EP 83101048 A EP83101048 A EP 83101048A EP 83101048 A EP83101048 A EP 83101048A EP 0087026 A1 EP0087026 A1 EP 0087026A1
Authority
EP
European Patent Office
Prior art keywords
burner
water
heated water
fuel
water reservoir
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.)
Granted
Application number
EP83101048A
Other languages
German (de)
French (fr)
Other versions
EP0087026B1 (en
Inventor
Reinhold Kehl
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.)
Cofrabel Nv
SCHONEWELLE BV
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Cofrabel Nv
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
SCHONEWELLE BV
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 Vaillant Austria GmbH, Cofrabel Nv, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, SCHONEWELLE BV filed Critical Vaillant Austria GmbH
Priority to AT83101048T priority Critical patent/ATE13942T1/en
Publication of EP0087026A1 publication Critical patent/EP0087026A1/en
Application granted granted Critical
Publication of EP0087026B1 publication Critical patent/EP0087026B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank
    • F24H1/183—Inner linings

Definitions

  • the present invention relates to a fuel-heated water reservoir according to the preamble of the main claim.
  • the present invention is therefore based on the object of applying a corrosion protection layer on the side of the water container facing the burner exhaust gases, which layer is not destroyed even in the case of subsequent enamelling of the side of the water container facing the water.
  • the aluminum layer can be selected so that it diffuses into the surface of the steel and thus does not drip as a melt at the high enamelling temperatures.
  • the cladding forms such an intimate connection with the steel material that the protective layer remains fully intact even at the enamelling temperatures.
  • the figure shows a schematic sectional view of the lower part of a hot water tank.
  • the hot water tank initially has an outer casing 1, preferably made of steel sheet painted on both sides.
  • the housing is cylindrical and has its Un terseite a disc-like bottom 2 on which feet 3 are arranged.
  • a water container 4 is provided within the housing, the outer wall 5 of which is equally cylindrical and is separated from the housing wall 1 by insulation 6.
  • the water tank 4 has an approximately cylindrical shape, its bottom 7 has an approximately bell shape.
  • a flame tube 8 passes through the center of the water container, the outer jacket 9 of which faces the water of the water container 4 and is provided with an enamel layer 10.
  • the enamel layer is also provided on the bottom 7 and on the inside of the outer wall 5.
  • an extension jacket piece 16 is welded, which is equally separated from the housing wall 1 by the insulation 6.
  • the inside 17 of this extension jacket is equally covered with the aluminum layer 13.
  • the outside of the burner can also be coated with the aluminum layer 13, it is immaterial whether the burner 12 burns liquid or gaseous fuels.
  • a collecting plate 18 is welded, the outside of which can equally be provided with the aluminum layer 13.
  • the holder elements 19 of the burner and the fuel feed pipe 20 can also be provided with the aluminum layer. The same applies to the inside of the bottom 2.
  • the procedure is preferably that a steel sheet is used as the starting material, which is provided on one side with an aluminum plating.
  • This steel sheet, together with the aluminum cladding, is rolled out to the thickness required for the production of the accumulator.
  • the thickness of the steel sheet is reduced analogously to the thickness of the aluminum cladding. It is essential that the aluminum layer penetrates deeply into the steel by thinning the composite sheet.
  • the subsequent welding e.g. B. the bottom with the flame tube and the bottom with the outer wall and the bottom with the extension piece, there are no difficulties due to the one-sided application of the aluminum.
  • Even during the subsequent enamelling process of the water container 4 there are no difficulties, since the aluminum protective layer survives the enamelling furnace temperature without damage due to the penetration of the aluminum into the steel layer.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Details Of Fluid Heaters (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

1. A fuel-heated water reservoir comprising a burner (12) and a water tank (4), which consists of steel and is enamelled (10) on the side facing the water, characterized in that an aluminium layer (13) is provided on that side (9) of the water tank (4) which faces the flue gases from the burner (12).

Description

Die vorliegende Erfindung bezieht sich auf einen brennstoffbeheizten Wasserspeicher gemäß dem Oberbegriff des Hauptanspruches.The present invention relates to a fuel-heated water reservoir according to the preamble of the main claim.

Solche brennstoffbeheizten Wasserspeicher sind bereits bekannt, es existiert auf dem Markt eine Vielzahl untereinander recht ähnlicher Konstruktionen.Such fuel-heated water reservoirs are already known; there are a number of constructions that are quite similar to one another on the market.

Diese aus Stahl hergestellten Wasserspeicher bereiten das Problem, daß bei relativ niedriger Soll-Temperatur des gespeicherten Warmwassers an den Flächen des Wasserspeichers, die dem Abgas des Brenners zugewandt sind, aufgrund von Taupunktunterschreitungen Korrosion auftritt.These water storage tanks made of steel have the problem that corrosion occurs at the relatively low target temperature of the stored hot water on the surfaces of the water storage tank which face the exhaust gas of the burner due to the dew point being undershot.

Korrosionserscheinungen treten aufgrund der Emaillierung der dem Wasser zugewandten Seite im Wasserraum des Speichers fast nie auf.Signs of corrosion almost never occur due to the enamelling of the side facing the water in the water space of the storage tank.

Da die Emaillierung des Wasserbehälters als letzter Arbeitsgang bei der Erstellung eines solchen Wasserspeichers vorgenommen wird, verbot sich bislang die Aufbringung einer Schutzschicht an der dem Wasser abgewandten Seite des Speichers, da entsprechende Schutzschichten abschmelzen würden. Diese Schutzschichten müßten nämlich auch zudem einem guten Wärmeübergang von den Abgasen des Brenners zum Wasserbehälter nicht im Wege stehen.Since the enamelling of the water tank is carried out as the last step in the creation of such a water reservoir, it was previously prohibited to apply a protective layer on the side of the reservoir facing away from the water, since corresponding protective layers would melt. These protective layers should not also stand in the way of good heat transfer from the exhaust gases of the burner to the water tank.

Der vorliegenden Erfindung liegt mithin die Aufgabe zugrunde, auf der den Brennerabgasen zugewandten Seite des Wasserbehälters eine Korrosionsschutzschicht aufzubringen, die auch bei nachfolgender Emaillierung der dem Wasser zugewandten Seite des Wasserbehälters nicht zerstört wird.The present invention is therefore based on the object of applying a corrosion protection layer on the side of the water container facing the burner exhaust gases, which layer is not destroyed even in the case of subsequent enamelling of the side of the water container facing the water.

Die Lösung dieser Aufgabe gelingt mit den kennzeichnenden Merkmalen des Hauptanspruches.This problem is solved with the characterizing features of the main claim.

Hierbei kann die Alumimumschicht so gewählt werden, daß sie in die Oberfläche des Stahls eindiffundiert und somit bei den hohen Emailliertemperaturen nicht als Schmelze abtropft.The aluminum layer can be selected so that it diffuses into the surface of the steel and thus does not drip as a melt at the high enamelling temperatures.

Es ist vorteilhaft, die Aluminiumschicht als Plattierung aufzubringen. Hierbei geht die Plattierung eine so innige Verbindung mit dem Stahlmaterial ein, daß auch bei den Emailliertemperaturen die Schutzschicht voll erhalten bleibt.It is advantageous to apply the aluminum layer as a plating. The cladding forms such an intimate connection with the steel material that the protective layer remains fully intact even at the enamelling temperatures.

Schließlich ist es besonders zweckmäßig, auch die übrigen Innenwände des Wasserspeichers, soweit sie den Abgasen des Brenners ausgesetzt sind, mit einer solchen Aluminiumschicht .zu versehen.Finally, it is particularly expedient to provide the other inner walls of the water reservoir with such an aluminum layer insofar as they are exposed to the exhaust gases of the burner.

Weitere Ausgestaltungen und besonders vorteilhafte Weiterbildungen der Erfindung gehen aus der nachfolgenden Beschreibung hervor, die in Verbindung mit der Figur der Zeichnung ein Ausführungsbeispiel der Erfindung näher erläutern.Further refinements and particularly advantageous developments of the invention will become apparent from the following description, which explain an exemplary embodiment of the invention in more detail in conjunction with the figure of the drawing.

Die Figur zeigt.eine schematische Schnittdarstellung des Unterteiles eines Heißwasserspeichers.The figure shows a schematic sectional view of the lower part of a hot water tank.

Der Heißwasserspeicher weist zunächst ein Außenmantelgehäuse 1, vorzugsweise aus beiderseits lackiertem Stahlblech, auf. Das Gehäuse ist zylinderförmig und weist an seiner Unterseite einen scheibenartigen Boden 2 auf, an dem Standfüße 3 angeordnet sind.The hot water tank initially has an outer casing 1, preferably made of steel sheet painted on both sides. The housing is cylindrical and has its Un terseite a disc-like bottom 2 on which feet 3 are arranged.

Innerhalb des Gehäuses ist ein Wasserbehälter 4 vorgesehen, dessen Außenwand 5 gleichermaßen zylinderförmig ist und von der Gehäusewand 1 durch eine Isolierung 6 getrennt ist. Der Wasserbehälter 4 hat etwa Zylinderform, sein Boden 7 weist etwa Glockenform auf. Das Zentrum des Wasserbehälters durchsetzt ein Flammrohr 8, dessen Außenmantel 9 dem Wasser des Wasserbehälters 4 zugewandt ist und mit einer Emailschicht 10 versehen ist. Die Emailschicht ist auch am Boden 7 und an der Innenseita der Außenwand 5 vorgesehen. An der Innenseite 11 des Flam'nrohrs 8, die den Abgasen eines Brenners 12 zugewandt ist, ist eine Aluminiumschicht 13 aufgebracht, die auch an der Unterseite 14 des Bodens 7 vorhanden ist.A water container 4 is provided within the housing, the outer wall 5 of which is equally cylindrical and is separated from the housing wall 1 by insulation 6. The water tank 4 has an approximately cylindrical shape, its bottom 7 has an approximately bell shape. A flame tube 8 passes through the center of the water container, the outer jacket 9 of which faces the water of the water container 4 and is provided with an enamel layer 10. The enamel layer is also provided on the bottom 7 and on the inside of the outer wall 5. On the inside 11 of the flame tube 8, which faces the exhaust gases from a burner 1 2, an aluminum layer 13 is applied, which is also present on the underside 14 of the bottom 7.

An der untersten Stelle 15 des Bodens 7 ist ein Verlängerungsmantelstück 16 angeschweißt, das von der Gehäusewandung 1 gleichermaßen durch die Isolierung 6 getrennt ist. Die Innenseite 17 dieses Verlängerungsmantels ist gleichermaßen mit der Aluminiumschicht 13 überzogen. Auch die Außenseite des Brenners kann mit der Aluminiumschicht 13 überzogen sein, hierbei ist es gleichgültig, ob der Brenner 12 flüssige oder gasförmige Brennstoffe verbrennt. Zwischen Brenner und dem Verlängerungsmantel 17 ist im Ringraum der Innenseite 17 ein Auffangblech 18 angeschweißt, dessen Außenseite gleichermaßen mit der Aluminiumschicht 13 versehen werden kann. `Auch die Halterungselemente 19 des Brenners und das Brennstoffzufuhrrohr 20 können mit der Aluminiumschicht versehen sein. Das gleiche gilt für die Innenseite des Bodens 2.At the lowest point 15 of the bottom 7, an extension jacket piece 16 is welded, which is equally separated from the housing wall 1 by the insulation 6. The inside 17 of this extension jacket is equally covered with the aluminum layer 13. The outside of the burner can also be coated with the aluminum layer 13, it is immaterial whether the burner 12 burns liquid or gaseous fuels. Between the burner and the extension jacket 17 is in the annular space On the inside 17, a collecting plate 18 is welded, the outside of which can equally be provided with the aluminum layer 13. `The holder elements 19 of the burner and the fuel feed pipe 20 can also be provided with the aluminum layer. The same applies to the inside of the bottom 2.

Bei der Herstellung des Heißwasserspeicherswird bevorzugt so vorgegangen, daß als Ausgangsmaterial ein Stahlblech verwendet wird, das .einseitig mit einer Aluminiumplattierung versehen ist. Dieses Stahlblech wird zusammen mit der Aluminiumplattierung auf das zur Herstellung des Speichers benötigte Dickenmaß ausgewalzt. Hierbei verringert sich das Dickenmaß des Stahlblechs analog zum Dickenmaß der Aluminiumplattierung. Wesentlich ist dabei, daß durch das Dünnerwalzen des Verbundbleches die Aluminiumschicht tief in den Stahl eindringt. Beim anschließenden Verschweißen, z. B. des Bodens mit dem Flammrohr und des Bodens mit der Außenwand und des Bodens mit dem Verlängerungsstück, gibt es aufgrund des einseitigen Auftrags des Aluminiums keine Schwierigkeiten. Auch beim nachfolgenden Emailliervorgang des Wasserbehälters 4 ergeben sich keine Schwierigkeiten, da aufgrund des Eindringens des Aluminiums in die Stahlschicht die Emaillierofen-Temperatur von der Aluminiumschutzschicht schadlos überstanden wird.In the manufacture of the hot water tank, the procedure is preferably that a steel sheet is used as the starting material, which is provided on one side with an aluminum plating. This steel sheet, together with the aluminum cladding, is rolled out to the thickness required for the production of the accumulator. The thickness of the steel sheet is reduced analogously to the thickness of the aluminum cladding. It is essential that the aluminum layer penetrates deeply into the steel by thinning the composite sheet. During the subsequent welding, e.g. B. the bottom with the flame tube and the bottom with the outer wall and the bottom with the extension piece, there are no difficulties due to the one-sided application of the aluminum. Even during the subsequent enamelling process of the water container 4, there are no difficulties, since the aluminum protective layer survives the enamelling furnace temperature without damage due to the penetration of the aluminum into the steel layer.

Somit sind praktisch alle Innenseiten des Feuerungsraumes 21 auf der dem Brenner bzw. seinen Abgasen zugewandten Seite und alle in den Brennraum hineinragenden Elemente durch die Aluminiumschutzschicht gegen Korrosion geschützt.Thus, practically all inner sides of the combustion chamber 21 on the side facing the burner or its exhaust gases and all elements projecting into the combustion chamber are protected against corrosion by the aluminum protective layer.

Claims (4)

1. Brennstoffbeheizter Wasserspeicher mit einem Brenner und einem stählernen Wasserbehälter, der auf der dem Wasser zugewandten Seite emailliert ist, dadurch gekennzeichnet, daß auf der den Abgasen des Brenners (12) zugewandten Seite (9) des Wasserbehälters (4) eine Aluminiumschicht (13) aufgebracht ist.1. Fuel-heated water tank with a burner and a steel water tank, which is enamelled on the water-facing side, characterized in that on the exhaust gases of the burner (12) facing side (9) of the water tank (4) an aluminum layer (13) is applied. 2. Brennstoffbeheizter Wasserspeicher nach Anspruch eins, dadurch gekennzeichnet, daß die Aluminiumschicht als Plattierung vorgesehen ist.2. Fuel-heated water reservoir according to claim one, characterized in that the aluminum layer is provided as a cladding. 3. Brennstoffbeheizter Wasserspeicher nach Anspruch eins oder zwei, dadurch gekennzeichnet, daß sämtliche den Feuerungsraum (21) umschließenden Teile (17, 2) des Gehäuses (1) des Wasserspeichers auf ihrer dem Brenner (12) zugewandten Seite mit der Aluminiumschicht versehen sind.3. Fuel-heated water reservoir according to claim one or two, characterized in that all the parts (17, 2) of the housing (1) of the water reservoir surrounding the furnace (21) are provided with the aluminum layer on their side facing the burner (12). 4. brennstoffbeheizter Wasserspeicher nach einem der Ansprüche eins bis drei, dadurch gekennzeichnet, daß sämtliche in den Feuerungsraum (21) hinein- ragenden Teile (12, 20, 19, 18) mit der Aluminiumschicht versehen sihd.4. fuel-heated water storage according to one of claims one to three, characterized in that all in the furnace (21) protruding parts (12, 20, 19, 18) provided with the aluminum layer.
EP83101048A 1982-02-09 1983-02-04 Fuel heated water reservoir Expired EP0087026B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83101048T ATE13942T1 (en) 1982-02-09 1983-02-04 FUEL HEATED WATER TANK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8203486U 1982-02-09
DE19828203486U DE8203486U1 (en) 1982-02-09 1982-02-09 FUEL HEATED WATER TANK

Publications (2)

Publication Number Publication Date
EP0087026A1 true EP0087026A1 (en) 1983-08-31
EP0087026B1 EP0087026B1 (en) 1985-06-19

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ID=6736881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101048A Expired EP0087026B1 (en) 1982-02-09 1983-02-04 Fuel heated water reservoir

Country Status (3)

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EP (1) EP0087026B1 (en)
AT (1) ATE13942T1 (en)
DE (3) DE8203486U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163838A1 (en) * 1984-05-09 1985-12-11 State Industries, Inc. Water heater construction

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650575A (en) * 1950-03-31 1953-09-01 Smith Corp A O Water heater flue construction
DE1716484U (en) * 1953-06-03 1956-02-09 Horst Riedel COAL STOVE.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650575A (en) * 1950-03-31 1953-09-01 Smith Corp A O Water heater flue construction
DE1716484U (en) * 1953-06-03 1956-02-09 Horst Riedel COAL STOVE.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163838A1 (en) * 1984-05-09 1985-12-11 State Industries, Inc. Water heater construction
EP0163838B1 (en) 1984-05-09 1987-07-29 State Industries, Inc. Water heater construction

Also Published As

Publication number Publication date
EP0087026B1 (en) 1985-06-19
DE3302787A1 (en) 1983-08-18
ATE13942T1 (en) 1985-07-15
DE3360272D1 (en) 1985-07-25
DE8203486U1 (en) 1982-07-01

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