EP0781391A1 - Pre-mixed gas ignition burner - Google Patents

Pre-mixed gas ignition burner

Info

Publication number
EP0781391A1
EP0781391A1 EP96927014A EP96927014A EP0781391A1 EP 0781391 A1 EP0781391 A1 EP 0781391A1 EP 96927014 A EP96927014 A EP 96927014A EP 96927014 A EP96927014 A EP 96927014A EP 0781391 A1 EP0781391 A1 EP 0781391A1
Authority
EP
European Patent Office
Prior art keywords
wire mesh
gas
flame
pilot burner
mesh
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
EP96927014A
Other languages
German (de)
French (fr)
Other versions
EP0781391B1 (en
Inventor
Hugo Groenemans
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.)
Garrett Motion SARL
Original Assignee
Honeywell 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 Honeywell BV filed Critical Honeywell BV
Publication of EP0781391A1 publication Critical patent/EP0781391A1/en
Application granted granted Critical
Publication of EP0781391B1 publication Critical patent/EP0781391B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/02—Pilot flame igniters without interlock with main fuel supply
    • F23Q9/04—Pilot flame igniters without interlock with main fuel supply for upright burners, e.g. gas-cooker burners

Definitions

  • the invention relates to a premix gas pilot burner with an air inlet arranged downstream of the gas inlet and a mixture outlet opening, which is opposed by a flame sensor electrode.
  • Gas pilot burners are known in numerous embodiments, e.g. from DE-GM 1 870 006, 1 897 906, 69 39 679, 69 47 963, 70 37 072, 72 18 018 and 74 01 561.
  • Gas premix burners according to the preamble of claim 1 are known from DE-GM 70 37 072 and DE-AS 10 09 126.
  • the wire mesh has a constant mesh width over its entire extent.
  • DE-AS 10 09 126 the apex area of the wire mesh opposite the outlet opening of the gas pipe is covered by a disk.
  • a gas burner for gases with low ignition speed in which the burner plate placed on the burner head is made of a gas-permeable material and in such a thickness that gas passes through the central gas passage opening for the main flame under substantially reduced pressure the burner plate can pass through. It forms a ring of small holding flames surrounding the main flame.
  • a similar construction shows DE-GM 69 39 679, where a
  • Flow channel for the main outlet opening of the gas is arranged behind the inlet nozzle of the gas in the mixing space so that this flow channel is mainly fed with pure fuel gas.
  • the burner plate surrounding this main flow channel is provided with a large number of small gas passage openings surrounding the main outlet opening, which give rise to a ring of small ionization flames in which the sensor electrode of an ionization flame detector is immersed.
  • a premix gas pilot burner is to be created which is inexpensive to manufacture and which can produce a stable flame even with fluctuating gas pressure.
  • a dome-shaped or paraboloid-shaped wire mesh can be produced in a simple manner by deforming a flat wire mesh with a constant mesh size over a mandrel. It can be fastened in a sleeve that can be screwed or plugged onto the burner mouth.
  • Such a production of the wire mesh also has the advantage that the mesh size of the mesh is larger in the apex area of the curvature than in the edge areas of the curved wire mesh.
  • the grid creates a larger ground area for a flame sensor that works on the flame ionization principle and thus a stronger flame flow.
  • the counter electrode faces the mixture outlet opening and can optionally also be used as an ignition electrode.
  • a separate ignition electrode is directed laterally onto the curved wire mesh.
  • Figure 1 is a side view of a pilot burner assembly with flame electrode and separate ignition electrode.
  • Fig. 2A in an enlarged scale a section through the curved wire mesh
  • Fig. 2B on the same scale an end view of the wire mesh.
  • Has paraboloids It is made from a flat wire mesh with a constant mesh size by deforming it into a dome-shaped shape over a correspondingly shaped mandrel. At the same time, the mesh size in the apex region 10 of the grille is larger than in the edge region 11 thereof.
  • the wire grate deformed in this way is held by a sleeve 8 which is screwed onto the outlet opening of the burner tube 2 or is attached by a snap connection.
  • the flame sensor electrode 3 can also serve as an ignition electrode for forming the ignition sparks when the burner is started.
  • the ground area enlarged by the grid 9 leads to an increased ionization current between the burner 2 and the sensor electrode 3, as a result of which the operation of the flame sensor is improved.
  • the new pilot burner is characterized by low manufacturing costs because the additional lateral outlet openings, which are often required in known pilot burners, are eliminated and it is composed of automatically produced turned parts and can also be assembled automatically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Gas Burners (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

In a pre-mixed gas ignition burner the mixture outlet (8) is covered by a domed wire mesh (9). It forms an enlarged mass area for a flame sensor based on the flame ionisation principle and produces a ring of small permanent flames which stabilise the main flame.

Description

Vormisch-Gaszündbrenner Premix gas pilot burner
Die Erfindung betrifft einen Vormisch-Gaszündbrenner mit einem stromabwärts vom Gaseinlaß angeordneten Lufteinlaß sowie einer Gemischauslaßöfϊhung, welcher eine Flammenfuhlerelektrode gegenübersteht. Gaszündbrenner sind in zahlreichen Ausführungsformen bekannt, z.B. aus DE-GM 1 870 006, 1 897 906, 69 39 679, 69 47 963, 70 37 072, 72 18 018 und 74 01 561.The invention relates to a premix gas pilot burner with an air inlet arranged downstream of the gas inlet and a mixture outlet opening, which is opposed by a flame sensor electrode. Gas pilot burners are known in numerous embodiments, e.g. from DE-GM 1 870 006, 1 897 906, 69 39 679, 69 47 963, 70 37 072, 72 18 018 and 74 01 561.
Gasvormischbrenner gemäß Oberbegriff des Anspruchs 1 sind aus DE-GM 70 37 072 sowie DE-AS 10 09 126 bekannt. Die Drahtgitter haben dort über ihre gesamte Ausdehung eine gleichbleibende Maschenweite. In DE-AS 10 09 126 ist der der Austrittsoffnung des Gasrohrs gegenüberliegende Scheitelbereich des Drahtgitters durch eine Scheibe abgedeckt.Gas premix burners according to the preamble of claim 1 are known from DE-GM 70 37 072 and DE-AS 10 09 126. The wire mesh has a constant mesh width over its entire extent. In DE-AS 10 09 126 the apex area of the wire mesh opposite the outlet opening of the gas pipe is covered by a disk.
Aus DE-AS 11 84 713 ist ein Gasbrenner für Gase geringer Zündgeschwindigkeit bekannt, bei dem die auf den Brennerkopf aufgesetzte Brennerplatte aus einem gasdurchlässigen Werkstoff und in solcher Dicke ausgebildet ist, daß um die zentrale Gasdurchtrittsöffhung für die Hauptflamme herum Gas unter wesentlich vermindertem Druck durch die Brennerplatte hindurchtreten kann. Es bildet einen die Hauptflamme umgebenden Kranz kleiner Halteflammen. Eine ähnliche Konstruktion zeigt DE-GM 69 39 679, wo einFrom DE-AS 11 84 713 a gas burner for gases with low ignition speed is known, in which the burner plate placed on the burner head is made of a gas-permeable material and in such a thickness that gas passes through the central gas passage opening for the main flame under substantially reduced pressure the burner plate can pass through. It forms a ring of small holding flames surrounding the main flame. A similar construction shows DE-GM 69 39 679, where a
Strömungskanal für die Hauptaustrittsöffhung des Gases hinter der Eintrittsdüse des Gases in den Mischraum so angeordnet ist, daß dieser Strömungskanal überwiegend mit reinem Brenngas beschickt wird. Die diesen Hauptströmungskanal umgebende Brennerplatte ist mit einer Vielzahl kleiner, die Hauptaustrittsöffhung umgebender Gasdurchtrittsöffhungen versehen, welche einen Ring kleiner Ionisationsflammen entstehen lassen, in welchen die Fühlerelektrode eines Ionisations-Flammenfuhlers eintaucht.Flow channel for the main outlet opening of the gas is arranged behind the inlet nozzle of the gas in the mixing space so that this flow channel is mainly fed with pure fuel gas. The burner plate surrounding this main flow channel is provided with a large number of small gas passage openings surrounding the main outlet opening, which give rise to a ring of small ionization flames in which the sensor electrode of an ionization flame detector is immersed.
Mit der Erfindung soll ein Vormisch-Gaszündbrenner geschaffen werden, der kostengünstig herstellbar ist und auch bei schwankendem Gasdruck eine stabile Flamme entstehen läßt. Dies gelingt mit der im Anspruch 1 gekennzeichneten Erfindung. Ein kuppel- oder paraboloidförmiges Drahtgitter läßt sich in einfacher Weise durch Verformen eines ebenen Drahtgitters konstanter Maschenweite über einem Dorn herstellen. Man kann es in einer auf den Brennermund aufschraubbaren oder aufsteckbaren Hülse befestigen. Eine solche Herstellung des Drahtgitters hat zugleich den Vorteil, daß die Maschenweite des Gitters im Scheitelbereich der Wölbung größer ist als in den Randbereichen des gewölbten Drahtgitters.With the invention, a premix gas pilot burner is to be created which is inexpensive to manufacture and which can produce a stable flame even with fluctuating gas pressure. This succeeds with the invention characterized in claim 1. A dome-shaped or paraboloid-shaped wire mesh can be produced in a simple manner by deforming a flat wire mesh with a constant mesh size over a mandrel. It can be fastened in a sleeve that can be screwed or plugged onto the burner mouth. Such a production of the wire mesh also has the advantage that the mesh size of the mesh is larger in the apex area of the curvature than in the edge areas of the curved wire mesh.
Die bei der Verformung des Gitters zwangsweise entstehende unterschiedliche Maschenweite hat zur Folge, daß vom Scheitel der Düse her zum Rand Ringe von Durchlaßöffhungen entstehen, welche zum Rand hin einen immer kleiner werdenden Öffhungsquerschnitt haben. Der Durchmesser dieser Öffnungen bestimmt das Zündverhalten der Flamme in Abhängigkeit vom Gemischdruck und der Gemischzusammensetzung. Es wird sich also immer eine Öffhungsgröße finden, die optimal an das jeweilige Gemisch bzw. den jeweiligen Gemischdruck angepaßt ist.The result of the different mesh size which is inevitably formed when the grille is deformed is that rings of passage openings are formed from the apex of the nozzle to the edge and have an increasingly smaller opening cross-section towards the edge. The diameter of these openings determines the ignition behavior of the flame as a function of the mixture pressure and the mixture composition. There will always be an opening size that is optimally adapted to the respective mixture or the respective mixture pressure.
Es hat sich gezeigt, daß auf diese Weise eine besonders stabile Zündflamme gebildet wird. Das Gitter fuhrt nämlich zum Entstehen einer Vielzahl kleiner Flammen, welche dicht nebeneinander einen die Hauptflamme umgebenden Ring von Halteflammen bilden. Sie wirken aufeinander ein und erhöhen die Stabilität des Zündbrenners. Bei einer Änderung von Gemischzusammensetzung oder -druck wandert der Ring von Halteflammen am Gitter auf und ab. Es ist aber stets ein Kranz gut brennender Halteflammen vorhanden, welcher die Hauptflamme unterstützt bzw. wieder zündet. Die zum Rand hin immer kleiner werdenden Öffnungen sorgen für eine Vielzahl stabiler Halteflammen, was insgesamt zur Stabilisierung der Flamme beiträgt.It has been shown that a particularly stable pilot flame is formed in this way. This is because the grid leads to the creation of a large number of small flames which form a ring of holding flames close to one another around the main flame. They interact and increase the stability of the pilot burner. When the mixture composition or pressure changes, the ring of holding flames moves up and down the grille. But there is always a wreath of well-burning holding flames, which supports the main flame or ignites it again. The openings, which are getting smaller and smaller towards the edge, ensure a large number of stable holding flames, which overall contributes to stabilizing the flame.
Zugleich entsteht durch das Gitter eine größere Massefläche für einen auf dem Flammenionisationsprinzip arbeitenden Flammenfühler und somit ein stärkerer Flammenstrom. Die Gegenelektrode steht der Gemischauslaßöffhung gegenüber und kann ggf. zugleich als Zündelektrode Verwendung finden. Bei einer anderen Ausführungsform ist eine gesonderte Zündelektrode seitlich auf das gewölbte Drahtgitter gerichtet. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. Die Erfindung wird nachfolgend anhand eines in der Zeichnung wiedergegebenen Ausführungsbeispiels erläutert. Dabei zeigtAt the same time, the grid creates a larger ground area for a flame sensor that works on the flame ionization principle and thus a stronger flame flow. The counter electrode faces the mixture outlet opening and can optionally also be used as an ignition electrode. In another embodiment, a separate ignition electrode is directed laterally onto the curved wire mesh. Advantageous refinements of the invention result from the subclaims. The invention is explained below using an exemplary embodiment shown in the drawing. It shows
Fig. 1 eine seitliche Ansicht einer Zündbrenneranordnung mit Flammenelektrode und gesonderter Zündelektrode;Figure 1 is a side view of a pilot burner assembly with flame electrode and separate ignition electrode.
Fig. 2A in vergrößertem Maßstab einen Schnitt durch das gewölbte Drahtgitter undFig. 2A in an enlarged scale a section through the curved wire mesh and
Fig. 2B im gleichen Maßstab eine stirnseitige Draufsicht auf das Drahtgitter.Fig. 2B on the same scale an end view of the wire mesh.
In einem gemeinsamen Träger 1 sind ein Zündbrenner 2 von im wesentlichen zylindrischer Gestalt sowie eine Flammenfuhlerelektrode 3 und eine Zündelektrode 4 gehalten, welche gegenüber dem Träger 1 elektrisch isoliert sind. Gas wird dem Zündbrenner 2 über eine axiale Gaszuleitung 5 zugeführt, während Verbrennungsluft radial über ein Schmutzfilter 6 angesaugt wird. Innerhalb des Sechskantstutzens 7 befindet sich eine Düse zur Strömungsbeschleunigung, wie dies an sich bekannt ist. Über dem Brennermundstück 8 wölbt sich ein Drahtgitter 9, welches die Form einer Kuppel oder angenähert einesA pilot burner 2 of essentially cylindrical shape and a flame sensor electrode 3 and an ignition electrode 4, which are electrically insulated from the carrier 1, are held in a common carrier 1. Gas is supplied to the pilot burner 2 via an axial gas feed line 5, while combustion air is sucked in radially through a dirt filter 6. Within the hexagon socket 7 there is a nozzle for accelerating the flow, as is known per se. A wire mesh 9, which has the shape of a dome or approximately one, arches over the burner mouthpiece 8
Paraboloids hat. Es ist aus einem ebenen Drahtgitter konstanter Maschenweite hergestellt, indem dieses über einem entsprechend geformten Dorn zu seiner kuppeiförmigen Gestalt verformt wird. Dabei wird zugleich die Maschenweite im Scheitelbereich 10 des Gitters größer als in dessen Randbereich 11. Das so verformte Drahtgitter wird von einer auf die Austrittsoffnung des Brennerrohres 2 aufgeschraubten oder durch eine Schnappverbindung aufgesteckten Hülse 8 gehalten. Anstelle einer gesonderten Zündelektrode 4 kann auch die Flammenfuhlerelektrode 3 beim Ingangsetzen des Brenners als Zündelektrode zur Bildung der Zündfunken dienen. Die durch das Gitter 9 vergrößerte Massefläche führt zu einem erhöhten Ionisationsstrom zwischen Brenner 2 und Fühlerelektrode 3, wodurch die Arbeitsweise des Flammenfühlers verbessert wird. Der neue Zündbrenner zeichnet sich durch geringe Herstellungskosten aus, weil die bei bekannten Zündbrennern vielfach erforderlichen zusätzlichen seitlichen Austrittsoffnungen entfallen und er aus automatisch herstellbaren Drehteilen zusammengesetzt ist und auch automatisch zusammengebaut werden kann. Has paraboloids. It is made from a flat wire mesh with a constant mesh size by deforming it into a dome-shaped shape over a correspondingly shaped mandrel. At the same time, the mesh size in the apex region 10 of the grille is larger than in the edge region 11 thereof. The wire grate deformed in this way is held by a sleeve 8 which is screwed onto the outlet opening of the burner tube 2 or is attached by a snap connection. Instead of a separate ignition electrode 4, the flame sensor electrode 3 can also serve as an ignition electrode for forming the ignition sparks when the burner is started. The ground area enlarged by the grid 9 leads to an increased ionization current between the burner 2 and the sensor electrode 3, as a result of which the operation of the flame sensor is improved. The new pilot burner is characterized by low manufacturing costs because the additional lateral outlet openings, which are often required in known pilot burners, are eliminated and it is composed of automatically produced turned parts and can also be assembled automatically.

Claims

Patentansprüche claims
1. Vormisch-Gaszündbrenner mit : a) einem stromabwärts vom Gaseinlaß (5) angeordneten Lufteinlaß (6) sowie b) einer von einem kuppelförmig gewölbten Drahtgitter (9) überdeckten1. Premix gas pilot burner with: a) an air inlet (6) arranged downstream of the gas inlet (5) and b) one covered by a dome-shaped wire mesh (9)
Gemischauslaßöffhung (8), welcher eine Flammenfuhlerelektrode (3) gegenübersteht, dadurch gekennzeichnet, daß c) die Wölbung des Drahtgitters (9) durch Verformen eines ebenen Drahtgitters gleicher Maschenweite hergestellt ist, und d) die Maschenweite des Drahtgitters (9) im Scheitelbereich (10) der kuppelformigen Wölbung wesentlich größer ist als in den Randbereichen (11) des Drahtgitters (9).Mixture outlet opening (8), which is opposite a flame sensor electrode (3), characterized in that c) the curvature of the wire mesh (9) is produced by deforming a flat wire mesh of the same mesh size, and d) the mesh size of the wire mesh (9) in the apex region (10 ) the dome-shaped curvature is significantly larger than in the edge areas (11) of the wire mesh (9).
2. Zündbrenner nach Anspruch 1, dadurch gekennzei chnet , daß eine gesonderte Zündelektrode (4) seitlich auf das gewölbte Drahtgitter (9) gerichtet ist.2. pilot burner according to claim 1, characterized gekennzei chnet that a separate ignition electrode (4) is directed laterally onto the curved wire mesh (9).
3. Zündbrenner nach Anspruch 1 oder 2, dadurch gekennzei chnet , daß zwischen Gaseinlaß (5) und Lufteinlaß (6) eine Düse im Gasweg angeordnet ist. 3. pilot burner according to claim 1 or 2, characterized gekennzei chnet that between the gas inlet (5) and air inlet (6) a nozzle is arranged in the gas path.
EP96927014A 1995-07-25 1996-07-16 Pre-mixed gas ignition burner Expired - Lifetime EP0781391B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19527075 1995-07-25
DE19527075A DE19527075C1 (en) 1995-07-25 1995-07-25 Pre-mix gas ignition burner
PCT/EP1996/003115 WO1997005426A1 (en) 1995-07-25 1996-07-16 Pre-mixed gas ignition burner

Publications (2)

Publication Number Publication Date
EP0781391A1 true EP0781391A1 (en) 1997-07-02
EP0781391B1 EP0781391B1 (en) 1999-04-14

Family

ID=7767691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927014A Expired - Lifetime EP0781391B1 (en) 1995-07-25 1996-07-16 Pre-mixed gas ignition burner

Country Status (6)

Country Link
EP (1) EP0781391B1 (en)
CZ (1) CZ6218U1 (en)
DE (2) DE19527075C1 (en)
HU (2) HUP9702446A2 (en)
PL (1) PL58566Y1 (en)
WO (1) WO1997005426A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19811987A1 (en) * 1998-03-19 1999-09-23 Rauschert Gmbh & Co Kg Paul Pilot burner
CN103363555B (en) * 2012-04-01 2016-08-03 宁波市比利仕燃器科技有限公司 Low interference igniter for gas utensil security protection
US11466854B2 (en) * 2021-02-05 2022-10-11 The Marley Company Llc Spark ignition pilot assembly

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7037072U (en) * 1900-01-01 Junkers & Co Gmbh Device for lighting and monitoring gas-heated devices
DE1009126B (en) * 1952-05-03 1957-05-29 Vaillant Joh Kg Ignition burner for gases with low ignition speeds, especially liquid gases
DE1897906U (en) * 1962-03-17 1964-08-06 Danfoss As GAS BURNER, IN PARTICULAR IGNITION BURNER
DE1184713B (en) * 1963-02-04 1965-01-07 Junkers & Co Gas burners, especially for gases with a low ignition speed
DE1870006U (en) * 1963-02-08 1963-04-11 Junkers & Co IGNITION BURNER FOR GAS HEATED APPLIANCES.
FR1455790A (en) * 1964-08-20 1966-05-20 Quercia Flaminaire Sa Improvements to gas burners
CH475518A (en) * 1968-12-10 1969-07-15 Landis & Gyr Ag Pilot burner
US3528754A (en) * 1968-12-16 1970-09-15 Honeywell Inc Pilot burner
FR2082195A5 (en) * 1970-03-06 1971-12-10 Saunier Duval
DE7218018U (en) * 1971-05-13 1972-08-10 Soc Italiana Tecnomeccanica La Precisa Di De Stefani P S FIRE DEVICE FOR GAS HEATERS
FR2214865A1 (en) * 1973-01-18 1974-08-19 Italiana Tecnomeccanica Precis
DE2819075A1 (en) * 1978-04-29 1979-10-31 Dungs Karl Gmbh & Co Atmospheric gas burner with injection chamber - has adjustment tube for gas and air flow opposite ignition electrode
JPS57172106A (en) * 1981-04-16 1982-10-22 Jii S Seisakusho:Kk Gas burner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9705426A1 *

Also Published As

Publication number Publication date
HU1606U (en) 1999-09-28
DE59601657D1 (en) 1999-05-20
HU9800043V0 (en) 1998-04-28
DE19527075C1 (en) 1996-08-14
PL106385U1 (en) 1997-08-04
HUP9702446A2 (en) 1998-03-30
EP0781391B1 (en) 1999-04-14
WO1997005426A1 (en) 1997-02-13
PL58566Y1 (en) 2001-04-30
CZ6218U1 (en) 1997-06-24

Similar Documents

Publication Publication Date Title
DE19729047C1 (en) Air mixer for gas burner
DE69820818T2 (en) spark plug
EP0102507A2 (en) Apparatus for injecting fuel into the combustion chambers of internal-combustion engines of the self-igniting kind
DE3121572C2 (en)
DE19705372A1 (en) Spark plug for an internal combustion engine and process for its manufacture
DE2003352C3 (en) Valve arrangement for a gas lighter
DE2832708A1 (en) GAS BURNER
EP0221914B1 (en) Flame injection burner for powder- or wire- form materials
DE2541991C3 (en) burner
DE4344728C2 (en) Gas lighter
EP3254027B1 (en) Gas distributor device for an atmospheric gas burner
EP0781391B1 (en) Pre-mixed gas ignition burner
EP0367777B1 (en) Injection valve
DE19857020C2 (en) Firelighter
DE3110301A1 (en) BURNER WITH A PRE-MIXTURE OF AIR AND BLOW GAS
DE3502166C2 (en)
DE2700786C3 (en) Ceramic gas burner for wind heaters
EP0832399A1 (en) Catalytic ignition burner for a gas turbine
DE4011190A1 (en) Recuperative burner for industrial plant
EP0451662B1 (en) Recuperative burner
DE2809114A1 (en) Burner with annular nozzle for combustion plant - uses clamped replaceable rims to change nozzle outlet width
DE2249689C3 (en) Burner valve nozzle for gas lighters
DE3600151C2 (en)
AT228440B (en) Gaseous fuel burners
DE2242040C3 (en) Solder and heating torch

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: 19970310

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT NL

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19981001

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

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

Effective date: 19990415

REF Corresponds to:

Ref document number: 59601657

Country of ref document: DE

Date of ref document: 19990520

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

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
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

NLS Nl: assignments of ep-patents

Owner name: HONEYWELL TECHNOLOGIES SARL

Effective date: 20080618

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

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

Ref country code: GB

Payment date: 20120625

Year of fee payment: 17

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

Ref country code: DE

Payment date: 20120731

Year of fee payment: 17

Ref country code: IT

Payment date: 20120720

Year of fee payment: 17

Ref country code: FR

Payment date: 20120712

Year of fee payment: 17

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

Ref country code: NL

Payment date: 20120713

Year of fee payment: 17

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20140201

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

Effective date: 20130716

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140331

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

Ref country code: NL

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

Effective date: 20140201

Ref country code: GB

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

Effective date: 20130716

Ref country code: DE

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

Effective date: 20140201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59601657

Country of ref document: DE

Effective date: 20140201

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: 20130731

Ref country code: IT

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

Effective date: 20130716