EP0434977B1 - Boiler - Google Patents

Boiler Download PDF

Info

Publication number
EP0434977B1
EP0434977B1 EP90122272A EP90122272A EP0434977B1 EP 0434977 B1 EP0434977 B1 EP 0434977B1 EP 90122272 A EP90122272 A EP 90122272A EP 90122272 A EP90122272 A EP 90122272A EP 0434977 B1 EP0434977 B1 EP 0434977B1
Authority
EP
European Patent Office
Prior art keywords
burner
tubes
distance
tube
chamber
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 - Lifetime
Application number
EP90122272A
Other languages
German (de)
French (fr)
Other versions
EP0434977A1 (en
Inventor
Hans-Albrecht Kohlmann
Winfried Uckelmann
Hans Ludowisy
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.)
N.V. VAILLANT S.A.
VAILLANT-SCHONEWELLE B.V.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-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, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Publication of EP0434977A1 publication Critical patent/EP0434977A1/en
Application granted granted Critical
Publication of EP0434977B1 publication Critical patent/EP0434977B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/70Baffles or like flow-disturbing devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/30Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections
    • F24H1/32Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections with vertical sections arranged side by side

Definitions

  • the invention relates to a sectional heating boiler with two end links and at least one middle link, in which a burner chamber provided with a burner tube is arranged in a space formed between the end links and below the middle link (s).
  • the aim of the invention is to propose a boiler of the type mentioned in the introduction, in which an adaptation to the respective conditions is possible in a simple manner, in particular with regard to the expansion of performance. NO x reduction is also desirable.
  • the focal surface of a chamber delimited by wall parts and the outflow cross-section of the burner rod or burner rods arranged in this chamber of the relationship F B F A 20 to 40 are sufficient, where F B is the combustion chamber area, which results from the product of the depth and width of the respective chamber, and F A is the mixture outlet cross section of the burner rod or the burner rods.
  • heat conducting rods are arranged in the vicinity of each burner tube and run parallel to the respective burner tube.
  • the boiler according to the invention has a base plate 25 on which the side walls formed by end members 5 stand up, the end members 5 are flowed through by the heating medium.
  • the end members 5 are essentially L-shaped in cross section, so that they also form part of the ceiling 26 of the burner chamber.
  • the burner chamber is divided several times.
  • essentially T-shaped middle members 6 are provided in cross section, which are also flowed through by the heating medium 9.
  • the substantially horizontal legs of the end members 5 and the middle members 6 are dimensioned such that their vertical legs are spaced apart from one another, which allows the inclusion of a burner tube 1 in the chamber 3 delimited by the wall parts of the end members 5 and the middle members 6 .
  • intermediate pieces 11 are also provided, which can be inserted between the horizontal legs of the middle links 6 or the end links 5.
  • the burner tubes 1 are supplied with a gas-air mixture via a mixture tube 15, the mixing of these two components taking place in the mixture tube 15.
  • a gas nozzle 16 is arranged just in front of the inlet end of the mixture pipe 15, air being sucked into the mixture pipe 15 when the gas flows into the mixture pipe 15.
  • the wall parts 6 - as shown in FIG. 3 - can have a recess 14 in which the ignition takes place (unhindered jumping of the flame in front of one rod onto the other).
  • an output of, for example, 11 kW can be achieved with two burner tubes and, with three burner tubes, an output of 17 kW, etc.
  • FIG. 2 also clearly shows that a maximum of two burner tubes 1 are arranged between two wall parts 5, 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gas Burners (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Fire-Extinguishing Compositions (AREA)

Abstract

Sectional boiler with two end sections (5) and at least one central section (6) with a number of burner pipes (1). With more than two burner pipes (1), a separate T-shaped central section (6) is provided, which projects with its leg into the space between two burner pipes (1). <IMAGE>

Description

Die Erfindung bezieht sich auf einen Gliederheizkessel mit zwei Endgliedern und wenigstens einem Mittelglied, bei dem eine mit einem Brennerrohr versehene Brennerkammer in einem zwischen den Endgliedern und unterhalb des/der Mittelgliedes(er) gebildeten Raum angeordnet ist.The invention relates to a sectional heating boiler with two end links and at least one middle link, in which a burner chamber provided with a burner tube is arranged in a space formed between the end links and below the middle link (s).

Bei solchen bekannten Heizkesseln ergibt sich das Problem, daß deren Auslegung für den jeweiligen Bedarf relativ aufwendig ist, und bisher mußte für jeden Anwendungsfall separat ausgelegt und dimensioniert werden.In such known boilers, there is the problem that their design is relatively complex for the respective need, and previously it had to be designed and dimensioned separately for each application.

Ziel der Erfindung ist es, einen Heizkessel der eingangs erwähnten Art vorzuschlagen, bei dem auf einfache Weise eine Anpassung an die jeweiligen Verhältnisse, insbesondere im Hinblick auf Leistungserweiterung, möglich ist. Weiterhin ist eine NOx-Reduzierung anzustreben.The aim of the invention is to propose a boiler of the type mentioned in the introduction, in which an adaptation to the respective conditions is possible in a simple manner, in particular with regard to the expansion of performance. NO x reduction is also desirable.

Erfindungsgemäß wird dies dadurch erreicht, daß bei Leistungserweiterung mehrere Brennerrohre vorgesehen sind und daß bei mehr als zwei Brennerrohren ein gesondertes T-förmiges Mittelglied vorgesehen ist, das mit seinem Schenkel in den Raum zwischen zwei Brennerrohren ragt und bei zwischen den Wandteilen der End- und Mittelglieder angeordneten Brennerrohren das Verhältnis des Abstandes der Brennerrohre von der nächstgelegenen Wand, bezogen auf den halben Abstand zwischen diesen beiden Wandteilen, der Beziehung: l l max = 0,3 - 0,7

Figure imgb0001

entspricht, wobei l den Abstand eines jeden Brennerrohres von der nächstgelegenen Wand und lmax den halben Abstand zwischen den beiden Wandteilen, zwischen denen beide Brennerrohre angeordnet sind, bedeuten und daß die Abstände zwischen zwei Brennerrohren beziehungsweise zwischen einem Paar von Brennerrohren und einem weiteren Brennerrohr den Beziehungen:
   A = 2 (lmax - 1)
   B = 2l + d A B = l max - 1 l + d 2
Figure imgb0002

entsprechen, wobei A den Abstand zwischen den beiden Brennerrohren eines Paares, B den Abstand zwischen einem einzelnen Brennerrohr und dem nächstgelegenen Brennerrohr eines Paares, l den Abstand eines Brennerrohres eines Paares vom nächstgelegenen Wandteil, lmax den Mittelabstand zwischen den das einzelne Brennerohr umgebenden Wandteilen und d die Dicke des zwischen dem Paar von Brennerrohren und dem einzelnen Brennerrohr befindlichen Wandteiles bedeuten.According to the invention, this is achieved in that several burner tubes are provided when the power is expanded and that in the case of more than two burner tubes a separate T-shaped central member is provided which projects with its leg into the space between two burner tubes and between the wall parts of the end and middle members arranged burner tubes the ratio of the distance of the burner tubes from the nearest wall, based on half the distance between these two wall parts, the relationship: l l Max = 0.3 - 0.7
Figure imgb0001

corresponds, where l is the distance of each burner tube from the nearest wall and l max is half the distance between the two wall parts between which both burner tubes are arranged, and that the distances between two burner tubes or between a pair of burner tubes and another burner tube den Relationships:
A = 2 (l max - 1)
B = 2l + d A B = l Max - 1 l + d 2nd
Figure imgb0002

correspond, where A the distance between the two burner tubes of a pair, B the distance between a single burner tube and the closest burner tube of a pair, l the distance of a burner tube of a pair from the nearest wall part, l max the center distance between the wall parts surrounding the individual burner tube and d mean the thickness of the wall part located between the pair of burner tubes and the individual burner tube.

Dies ermöglicht es, einen Kessel für eine vorgegebene Leistung modulartig aufzubauen und so in der Größe an die geforderte Leistung anzupassen. Dabei ist es möglich, einen erfindungsgemäßen Kessel für eine beliebige Leistung durch einfaches Verbinden der einzelnen modulartigen Teile herzustellen, womit auch der Vorteil einer einfachen Vorratshaltung der einzelnen Teile verbunden ist. Dabei ist aber stets sichergestellt, daß sich entsprechend kleine Abstände zwischen den Brennerohren und den diesen benachbarten gekühlten Wandteilen ergeben.This makes it possible to build a boiler for a given output in a modular manner and thus adapt its size to the required output. It is possible to manufacture a boiler according to the invention for any desired power by simply connecting the individual module-like parts, which also has the advantage of simply keeping the individual parts in stock. However, it is always ensured that there are correspondingly small distances between the burner tubes and the adjacent cooled wall parts.

Durch diese Maßnahmen wird erreicht, daß das Innere des Heizkessels relativ kühl gehalten wird, wodurch die Bildung von NOx weitgehend unterbunden wird. Bei nur einem zwischen zwei Wandteilen angerodneten Brennerrohr gilt die Beziehung: l l max = 1

Figure imgb0003
These measures ensure that the interior of the boiler is kept relatively cool, which largely prevents the formation of NO x . With only one burner pipe eroded between two wall parts, the relationship applies: l l Max = 1
Figure imgb0003

Weiter kann vorgesehen sein, daß die Brennfläche einer durch Wandteile begrenzten Kammer und der Ausströmquerschnitt des beziehungsweise der in dieser Kammer angeordneten Brennerstabes beziehungsweise Brennerstäbe der Beziehung F B F A = 20 bis 40

Figure imgb0004

genügen, wobei FB die Brennraumfläche, die sich aus dem Produkt der Tiefe und der Breite der jeweiligen Kammer ergibt, und FA den Gemischaustrittsquerschnitt des Brennerstabes beziehungsweise der Brennerstäbe bedeuten.It can further be provided that the focal surface of a chamber delimited by wall parts and the outflow cross-section of the burner rod or burner rods arranged in this chamber of the relationship F B F A = 20 to 40
Figure imgb0004

are sufficient, where F B is the combustion chamber area, which results from the product of the depth and width of the respective chamber, and F A is the mixture outlet cross section of the burner rod or the burner rods.

Durch die Einhaltung dieser Dimensionierungsrichtlinien wird eine optimale Beaufschlagung der vom Heizmedium durchströmten Wandteile sichergestellt, wodurch auch die Temperatur der Brenngase im Inneren des Kessels niedrig gehalten wird.By adhering to these dimensioning guidelines, an optimal loading of the wall parts through which the heating medium flows is ensured, which also lowers the temperature of the combustion gases inside the boiler is held.

Zur weiteren Verminderung der Temperatur der Brenngase kann vorgesehen sein, daß in der Nähe eines jeden Brennerrohres Wärmeleitstäbe angeordnet sind, die parallel zum jeweiligen Brennerrohr verlaufen.To further reduce the temperature of the fuel gases, it can be provided that heat conducting rods are arranged in the vicinity of each burner tube and run parallel to the respective burner tube.

Diese Wärmeleitstäbe leiten die Wärme in die vom Heizmedium durchströmten Wandteile ab, wobei durch die Wärmeleitstäbe die Temperatur der Flammen bereits nahe den Brennerrohren wesentlich vermindert wird.These heat conducting rods dissipate the heat into the wall parts through which the heating medium flows, the heat conducting rods substantially reducing the temperature of the flames near the burner tubes.

Die Erfindung wird nun anhand der Zeichnung näher erläutert.The invention will now be explained in more detail with reference to the drawing.

Dabei zeigen:

  • Figur 1 schematisch einen Querschnitt durch einen erfindungsgemäßen Heizkessel,
  • Figur 2 ein Schema für den modulartigen Aufbau erfindungsgemäßer Heizkessel und
  • Figur 3 einen Längsschnitt durch einen erfindungsgemäßen Heizkessel.
Show:
  • FIG. 1 schematically shows a cross section through a boiler according to the invention,
  • Figure 2 is a diagram for the modular construction of boilers according to the invention and
  • Figure 3 shows a longitudinal section through a boiler according to the invention.

Der erfindungsgemäße Heizkessel weist eine Bodenplatte 25 auf, auf der die durch Endglieder 5 gebildeten Seitenwände aufstehen, wobei die Endglieder 5 vom Heizmedium durchströmt sind. Die Endglieder 5 sind im Querschnitt im wesentlichen L-förmig ausgebildet, so daß diese auch einen Teil der Decke 26 der Brennerkammer bilden.The boiler according to the invention has a base plate 25 on which the side walls formed by end members 5 stand up, the end members 5 are flowed through by the heating medium. The end members 5 are essentially L-shaped in cross section, so that they also form part of the ceiling 26 of the burner chamber.

Die Brennerkammer ist mehrfach unterteilt. Dazu sind im Querschnitt im wesentlichen T-förmige Mittelglieder 6 vorgesehen, die ebenfalls vom Heizmedium 9 durchströmt sind.The burner chamber is divided several times. For this purpose, essentially T-shaped middle members 6 are provided in cross section, which are also flowed through by the heating medium 9.

Dabei sind die im wesentlichen horizontal verlaufenden Schenkel der Endglieder 5 und der Mittelglieder 6 so bemessen, daß deren vertikale Schenkel einen lichten Abstand voneinander aufweisen, der die Aufnahme eines Brennerrohres 1 in der durch die Wandteile der Endglieder 5 und der Mittelglieder 6 begrenzten Kammer 3 ermöglicht.The substantially horizontal legs of the end members 5 and the middle members 6 are dimensioned such that their vertical legs are spaced apart from one another, which allows the inclusion of a burner tube 1 in the chamber 3 delimited by the wall parts of the end members 5 and the middle members 6 .

Weiter sind noch Zwischenstücke 11 vorgesehen, die zwischen den horizontalen Schenkeln der Mittelglieder 6 oder der Endglieder 5 einsetzbar sind. In diesem Falle entsteht eine vergrößerte Kammer 3′, in der zwei zueinander parallellaufende Brennerrohre 1 angeordnet sind.Furthermore, intermediate pieces 11 are also provided, which can be inserted between the horizontal legs of the middle links 6 or the end links 5. In this case there is an enlarged chamber 3 ', in which two burner tubes 1 running parallel to one another are arranged.

In der Decke 26 sind im Bereich einer jeden Kammer 3, 3′ Rauchgaskanäle 2 angeordnet, die in den Rauchabzug 10 münden.In the ceiling 26 in the area of each chamber 3, 3 'flue gas channels 2 are arranged, which open into the smoke vent 10.

Im Bereich der Brennerrohre 1 sind zu diesen parallellaufende Wärmeleitstäbe 8 angeordnet, die einen Teil der Wärme der Flammen 4 ableiten.In the area of the burner tubes 1, parallel heat-conducting rods 8 are arranged, which dissipate part of the heat of the flames 4.

Die Anordnung der beiden Brennerrohre 1 in den Kammern 3, 3′ ist so bemessen, daß das Verhältnis des Abstandes l eines Brennerrohres 1 vom nächsten Wandteil 5, 6 zum halben lichten Abstand lmax der beiden eine vergrößerte Kammer 3′ begrenzenden Wandteilen l l max = 0,3 bis 0,7

Figure imgb0005

beträgt.The arrangement of the two burner tubes 1 in the chambers 3, 3 'is dimensioned so that the ratio of the distance l of a burner tube 1 from the next wall part 5, 6 to half the clear distance l max of the two an enlarged chamber 3' delimiting wall parts l l Max = 0.3 to 0.7
Figure imgb0005

is.

Die Abstände der Brennerrohre 1 voneinander sind dabei so bemessen, daß der Abstand A der beiden in einer Kammer 3′ angeordneten Brennerrohre der Beziehung A = 2 (l max - 1)

Figure imgb0006

entspricht und der Abstand B des einzelnen Rohres 1 von dem nächstgelegenen Rohr 1 des benachbarten Paares von Brennerrohren der Kammer 3′ der Beziehung B = 21 + d
Figure imgb0007

entspricht.The distances between the burner tubes 1 are dimensioned such that the distance A of the two in a chamber 3 'arranged burner tubes of the relationship A = 2 (l Max - 1)
Figure imgb0006

corresponds and the distance B of the individual tube 1 from the nearest tube 1 of the adjacent pair of burner tubes of the chamber 3 'of the relationship B = 21 + d
Figure imgb0007

corresponds.

Das Verhältnis der Brennraumfläche FB, die sich aus dem Produkt der Tiefe und der Breite des Brennraumes errechnet, zum Gemischausströmquerschnitt FA des Brennerrohres 1 liegt bei F B F A = 20 bis 40

Figure imgb0008

wobei FA die dem Gemisch zur Verfügung stehende Brennerrohraustrittsfläche (Gemischausströmquerschnitt) bezeichnet, welche für die einzelnen Kammern 3 und 3′ unterschiedlich groß sein kann, zum Beispiel FA für Kammer 3′ = 2 · FA für Kammer 3.The ratio of the combustion chamber area F B , which is calculated from the product of the depth and the width of the combustion chamber, to the mixture outflow cross section F A of the burner tube 1 is included F B F A = 20 to 40
Figure imgb0008

where F A denotes the burner tube outlet area available for the mixture (mixture outflow cross section), which can be of different sizes for the individual chambers 3 and 3 ', for example F A for chamber 3' = 2 · F A for chamber 3.

Die Brennerrohre 1 werden über ein Gemischrohr 15 mit einem Gas-Luft-Gemisch versorgt, wobei die Mischung dieser beiden Komponenten im Gemischrohr 15 erfolgt. Dabei ist eine Gasdüse 16 knapp vor dem Einlaßende des Gemischrohres 15 angeordnet, wobei beim Einströmen des Gases in das Gemischrohr 15 Luft mit in das Gemischrohr 15 eingesaugt wird. Zur besseren Überzündung können die Wandteile 6 - wie Figur 3 zeigt - eine Ausnehmung 14 besitzen, in welchem die Überzündung erfolgt (ungehindertes Überspringen der Flamme vor einem Stab auf den anderen).The burner tubes 1 are supplied with a gas-air mixture via a mixture tube 15, the mixing of these two components taking place in the mixture tube 15. A gas nozzle 16 is arranged just in front of the inlet end of the mixture pipe 15, air being sucked into the mixture pipe 15 when the gas flows into the mixture pipe 15. For better ignition, the wall parts 6 - as shown in FIG. 3 - can have a recess 14 in which the ignition takes place (unhindered jumping of the flame in front of one rod onto the other).

Durch den modulartigen Aufbau des Heizkessels kann dieser leicht an die jeweils gewünschte Leistung abgepaßt werden. So läßt sich, wie auch der Figur 2 zu ersehen ist, zum Beispiel mit zwei Brennerrohren eine Leistung von zum Beispiel 11 kW erreichen und mit drei Brennerrohren eine solche von 17 kW usw.Thanks to the modular design of the boiler, it can easily be adapted to the required output. Thus, as can also be seen in FIG. 2, an output of, for example, 11 kW can be achieved with two burner tubes and, with three burner tubes, an output of 17 kW, etc.

Die Figur 2 zeigt auch deutlich, daß maximal zwei Brennerrohre 1 zwischen zwei Wandteilen 5, 6 angeordnet sind.FIG. 2 also clearly shows that a maximum of two burner tubes 1 are arranged between two wall parts 5, 6.

Claims (3)

  1. A sectional heating boiler comprising two end sections and at least one intermediate section, wherein a burner chamber provided with a burner tube is disposed in a space that is disposed between the end sections and below the intermediate section(s), characterized in that a plurality of burner tubes (1) are provided for an increase of power and that in case of a provision of more than two burner tubes (1) a separate T-shaped intermediate section (6) is provided, the leg of which extends into the space between two burner tubes (1), and in case of burner tubes (1) disposed between the wall portions of the end and intermediate sections (5, 6) the ratio of the distance from the burner tubes (1) to the nearest wall to one-half of the distance between said two wall portions complies with the relationship l l max = 0.3 to 0.7
    Figure imgb0012
    wherein l is the distance from each burner tube (1) to the nearest wall and lmax is one-half of the distance between the two wall portions between which the two burner tubes (1) are disposed, and the distances between two burner tubes (1) and/or between a pair of burner tubes and a further burner tube (1) comply with the relationships
       A = 2 (lmax - 1)
       B = 2 l + d A B = l max - 1 1 + d 2
    Figure imgb0013
    wherein A is the distance between the two burner tubes of a pair, B is the distance between a single burner tube (1) and the nearest burner tube of a pair, l is the distance of one burner tube of a pair from the nearest wall portion, lmax is the center spacing of the wall portions surrounding the single burner tube (1) and d is the thickness of the wall portion that is disposed between the pair of burner tubes and the single burner tube (1).
  2. A sectional heating boiler according to claim 1, characterized in that the combustion area of a chamber (3, 3′) defined by wall portions (5, 6) and the exit cross-section of the burner rod (1) or burner rods disposed in said chamber complies with the relationship F B F A = 20 to 40
    Figure imgb0014
    wherein FB is the combustion chamber area determined as the product of the depth and width of the chamber (3, 3′) concerned and FA is the mixture exit flow area of the burner tube (1) or burner tubes.
  3. A sectional heating boiler according to any of either the preceding claims, characterized in that heat-conducting rods (8) are disposed near each burner tube (1) and are parallel to said burner tube (1).
EP90122272A 1989-11-24 1990-11-22 Boiler Expired - Lifetime EP0434977B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2684/89 1989-11-24
AT268489 1989-11-24

Publications (2)

Publication Number Publication Date
EP0434977A1 EP0434977A1 (en) 1991-07-03
EP0434977B1 true EP0434977B1 (en) 1993-02-10

Family

ID=3538651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122272A Expired - Lifetime EP0434977B1 (en) 1989-11-24 1990-11-22 Boiler

Country Status (3)

Country Link
EP (1) EP0434977B1 (en)
AT (1) ATE85692T1 (en)
DE (2) DE59000887D1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1302170A (en) * 1961-09-29 1962-08-24 Oelfeuerungen Ag Multi-part element boiler
DE2948838A1 (en) * 1979-12-05 1981-06-11 Wilhelm Dipl.-Ing. 8114 Uffing Schirmer Central heating boiler with thermostat control - has several burner sections individually connected in water circulation circuit
EP0326185B1 (en) * 1985-10-05 1992-04-29 Joh. Vaillant GmbH u. Co. Atmospheric gas burner

Also Published As

Publication number Publication date
ATE85692T1 (en) 1993-02-15
DE9016006U1 (en) 1991-02-07
EP0434977A1 (en) 1991-07-03
DE59000887D1 (en) 1993-03-25

Similar Documents

Publication Publication Date Title
DE4207500C2 (en) Boiler with reduced NO¶x¶ emissions
DE3633236C2 (en)
EP0434977B1 (en) Boiler
EP0131962B1 (en) Heat exchanger
EP0164098A2 (en) Heat exchanger
DE1629964A1 (en) Universal burner, especially for gas-heated household appliances
DE3916142C2 (en) Atmospheric gas burner
EP0994322A2 (en) Heat exchanger with connecting element
EP0869315A2 (en) Atmospheric gas burner
DE102011083407B4 (en) Residual gas burner
DE2034353A1 (en) Arrangements provided with holes
DE4435749A1 (en) Nozzle arrangement
DE29618377U1 (en) Gas combination roaster, especially sausage roaster
DE10341644B4 (en) Helical heat exchanger
DE3001174C2 (en) Fluidized bed combustion chamber
AT399381B (en) CASTED BOILER
AT397568B (en) Atmospheric gas burner
DE60008164T2 (en) Cooled and fully premixed gas burner
DE19545844A1 (en) Gas burner with mixing chamber and venturi duct
DE102004004853A1 (en) Boiler wall part for combustion furnace has flat section from which oblong pipe shaped element extends through which cooling agent flows
DE3131948C2 (en)
DE2031002C3 (en) Gas burner device
DE2053805B2 (en) Recuperative burner for industrial furnace - has air duct extending around combustion chamber with flow reversed past this to burner
DE25938C (en) Gas burner with preheating
DE19826094A1 (en) boiler

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

17P Request for examination filed

Effective date: 19910420

AK Designated contracting states

Kind code of ref document: A1

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

17Q First examination report despatched

Effective date: 19920306

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

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

Owner name: VAILLANT GMBH

Owner name: VAILLANT-SCHONEWELLE B.V.

Owner name: VAILLANT LTD.

Owner name: VAILLANT GES.M.B.H

Owner name: VAILLANT S.A.R.L

Owner name: JOH. VAILLANT GMBH U. CO.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

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

Ref country code: SE

Effective date: 19930210

Ref country code: NL

Effective date: 19930210

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930210

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19930210

Ref country code: DK

Effective date: 19930210

REF Corresponds to:

Ref document number: 85692

Country of ref document: AT

Date of ref document: 19930215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59000887

Country of ref document: DE

Date of ref document: 19930325

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930330

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
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: 19931130

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: GB

Payment date: 19990903

Year of fee payment: 10

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

Ref country code: FR

Payment date: 19990908

Year of fee payment: 10

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

Ref country code: BE

Payment date: 19991013

Year of fee payment: 10

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

Ref country code: GB

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

Effective date: 20001122

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

Ref country code: BE

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

Effective date: 20001130

BERE Be: lapsed

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

Effective date: 20001130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20001122

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

Ref country code: FR

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

Effective date: 20010731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: AT

Payment date: 20021014

Year of fee payment: 13

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

Ref country code: DE

Payment date: 20021112

Year of fee payment: 13

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

Ref country code: CH

Payment date: 20030207

Year of fee payment: 13

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

Ref country code: AT

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

Effective date: 20031122

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

Ref country code: LI

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

Effective date: 20031130

Ref country code: CH

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

Effective date: 20031130

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

Ref country code: DE

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

Effective date: 20040602

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: IT

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

Effective date: 20051122