EP0087026B1 - Fuel heated water reservoir - Google Patents

Fuel heated water reservoir Download PDF

Info

Publication number
EP0087026B1
EP0087026B1 EP83101048A EP83101048A EP0087026B1 EP 0087026 B1 EP0087026 B1 EP 0087026B1 EP 83101048 A EP83101048 A EP 83101048A EP 83101048 A EP83101048 A EP 83101048A EP 0087026 B1 EP0087026 B1 EP 0087026B1
Authority
EP
European Patent Office
Prior art keywords
burner
water
water reservoir
heated water
fuel
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
Application number
EP83101048A
Other languages
German (de)
French (fr)
Other versions
EP0087026A1 (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

Links

Images

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 divider 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 a disk-like base 2 on its underside, on which stands 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 container 4 is approximately cylindrical in shape, its bottom 7 is approximately bell-shaped.
  • a flame tube 8 passes through the center of the water tank, the outer jacket 9 of which faces the water of the water tank 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 gteicherma ß coated with the aluminum layer 13
  • the outside of the burner can be coated with the aluminum layer 13, it does not matter whether the burner 12 burns liquid or gaseous fuels.
  • a collecting plate 18 is welded in the annular space on the inside 17, 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 such 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 to produce the storage.
  • the thickness of the steel sheet is reduced analogously to the thickness of the aluminum cladding.
  • the aluminum by thinning the composite sheet layer penetrates deeply into the steel.
  • 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.

Landscapes

  • 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 large number of constructions that are quite similar to one another on the market.

Aus der US-A-2 650 575 ist ein gasbeheizter Speicher bekanntgeworden, der einen Wasserbehälter aus Stahl aufweist, dessen sowohl dem Wasser zugewandte Seite wie auch die den Rauchgasen zugewandte Seite mit einer Emailschicht versehen ist.From US-A-2 650 575 a gas-heated store has become known which has a water tank made of steel, the side facing the water as well as the side facing the flue gases is provided with an enamel layer.

Eine solche Ausgestaltung eines Speichers ist schwierig, da das beidseitige Emaillieren häufig zur sogenannten Emailschuppenbildung führt. Das bedeutet, daß die Email auf mindestens einer Seite schadhaft wird und damit die Korrosionsbeständigkeit des Stahls nicht gewährleistet wird. Zudem ist eine beidseitige Emaillierung relativ teuer.Such a design of a memory is difficult, since the enamelling on both sides often leads to the so-called enamel scale formation. This means that the enamel is damaged on at least one side and the corrosion resistance of the steel is not guaranteed. In addition, enamelling on both sides is relatively expensive.

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 Aluminiumschicht 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 aus gesetzt sind, mit einer solchen Aluminiumschicht zu versehen.Finally, it is particularly expedient to provide the other inner walls of the water storage, provided that they are the exhaust gases from the burner, with such an aluminum layer.

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 Unterteilers eines Heißwasserspeichers.The figure shows a schematic sectional view of the divider 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 Standfuße 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 a disk-like base 2 on its underside, on which stands 3 are arranged.

Innerhalb des Gehäuses ist ein Wasserbehälter4vorgesehen, dessen Außenwand 5 gleichermaßen zylinderförmig ist und von der Gehäuse wand 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 Innenseite der Außenwand 5 vorgesehen. An der Innenseite 11 des Flammrohrs 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 container 4 is approximately cylindrical in shape, its bottom 7 is approximately bell-shaped. A flame tube 8 passes through the center of the water tank, the outer jacket 9 of which faces the water of the water tank 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 of a burner 12, 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 gteicherma ßen 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 gteicherma ß coated with the aluminum layer 13 The outside of the burner can be coated with the aluminum layer 13, it does not matter whether the burner 12 burns liquid or gaseous fuels. Between the burner and the extension jacket 17, a collecting plate 18 is welded in the annular space on the inside 17, 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 Heißwasserspeichers wird 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 such 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 to produce the storage. The thickness of the steel sheet is reduced analogously to the thickness of the aluminum cladding. It is essential that the aluminum by thinning the composite sheet layer penetrates deeply into the steel. 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. 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).
2. A fuel-heated water heater according to claim 1, characterized in that aluminium layer consists of a cladding layer.
3. A fuel-heated water reservoir according to claim 1 or 2, characterized in that all parts (17, 2) of the housing (1) of the water reservoir which enclose the combustion chamber (21) are provided with the aluminium layer on that side which faces the burner (12).
4. A fuel-heated water reservoir according to any of claims 1 to 3, characterized in that all parts (12, 20, 19, 18) which protrude into the combustion chamber (21) are provided with the aluminium 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 EP0087026A1 (en) 1983-08-31
EP0087026B1 true EP0087026B1 (en) 1985-06-19

Family

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)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU576558B2 (en) * 1984-05-09 1988-09-01 State Industries, Inc. Water heater construction

Family Cites Families (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.

Also Published As

Publication number Publication date
DE3302787A1 (en) 1983-08-18
EP0087026A1 (en) 1983-08-31
ATE13942T1 (en) 1985-07-15
DE3360272D1 (en) 1985-07-25
DE8203486U1 (en) 1982-07-01

Similar Documents

Publication Publication Date Title
DE568050C (en) Pressure-tight combustion chamber for gas turbines, steam generators with pressure firing and related systems
EP0087026B1 (en) Fuel heated water reservoir
DE1401769B2 (en) METHOD AND DEVICE FOR INCINERATION OF LOW FLUID LIQUIDS
DE2829363A1 (en) Open fireplace that can be used as a hot water heater
CH148905A (en) Electric tube.
DE3123079C2 (en)
DE2721894C3 (en) Boilers for liquid or gaseous fuels
DE60211353T2 (en) DOUBLE SOLID FUEL INCINERATOR
DE297289C (en)
DE2622045B2 (en) Heat exchanger
DE2910409C2 (en) Collective heating boiler
AT142378B (en) Mainly used for the emission of light electrical discharge tube.
DE506998C (en) Spark plug for internal combustion engines
DE8800105U1 (en) Heating tube boilers for high pressure and high temperature, especially for use in high-pressure cleaning equipment
DE1751858C (en) Circular cylindrical jacket pipe for a jacket radiant heating pipe
DE7931362U1 (en) FIREPLACE INSERT FOR AN OPEN FIREPLACE
DE761157C (en) Process for the manufacture of upper parts of coal bath ovens
AT224301B (en) Heating system with a dome-like tile jacket that is closed on all sides and heated with hot air as a radiator
DE2800058A1 (en) Heat installation for liq. circulation system - has hot gas heating vessel with two outlets to each of two reserve cylinders and third outlet to central heating radiators
DE1623370C1 (en) Pyrotechnic radiator
DE3801437A1 (en) Heating boiler with pulsation burner
DE2059524A1 (en) Special central heating boiler, especially for oil and gas heating
DE7319752U (en) STORAGE STONE FOR HEAT STOVE
DE1041927B (en) Process for operating tube furnaces and tube furnaces
DE3508117A1 (en) BOILER FOR A LOW TEMPERATURE HEATING

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19830809

ITF It: translation for a ep patent filed

Owner name: DR. ING. A. RACHELI & C.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VAILLANT GMBH

Owner name: SCHONEWELLE B.V.

Owner name: VAILLANT LTD.

Owner name: VAILLANT GES.M.B.H

Owner name: VAILLANT S.A.R.L

Owner name: COFRABEL N.V.

Owner name: JOH. VAILLANT GMBH U. CO

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 13942

Country of ref document: AT

Date of ref document: 19850715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3360272

Country of ref document: DE

Date of ref document: 19850725

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19901212

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19901217

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19901221

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19901227

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19901228

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19910102

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910110

Year of fee payment: 9

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910228

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19910318

Year of fee payment: 9

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920204

Ref country code: GB

Effective date: 19920204

Ref country code: AT

Effective date: 19920204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19920228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19920229

Ref country code: CH

Effective date: 19920229

BERE Be: lapsed

Owner name: S.A. VAILLANT N.V:

Effective date: 19920228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920901

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19921030

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19921103

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 83101048.3

Effective date: 19920904