EP0550051A2 - Cutting torch of flame cutting machine provided with internal ignition device - Google Patents

Cutting torch of flame cutting machine provided with internal ignition device Download PDF

Info

Publication number
EP0550051A2
EP0550051A2 EP92122076A EP92122076A EP0550051A2 EP 0550051 A2 EP0550051 A2 EP 0550051A2 EP 92122076 A EP92122076 A EP 92122076A EP 92122076 A EP92122076 A EP 92122076A EP 0550051 A2 EP0550051 A2 EP 0550051A2
Authority
EP
European Patent Office
Prior art keywords
heating oxygen
fuel gas
heating
cutting torch
oxygen
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
EP92122076A
Other languages
German (de)
French (fr)
Other versions
EP0550051B1 (en
EP0550051A3 (en
Inventor
Werner Dipl.-Ing. Görde
Manfred Dipl.-Ing. Greifzu
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.)
GCE GmbH
Original Assignee
GCE Rhoena Autogengeraete GmbH
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 GCE Rhoena Autogengeraete GmbH filed Critical GCE Rhoena Autogengeraete GmbH
Priority to CA002096405A priority Critical patent/CA2096405A1/en
Priority to US08/083,462 priority patent/US5393223A/en
Publication of EP0550051A2 publication Critical patent/EP0550051A2/en
Publication of EP0550051A3 publication Critical patent/EP0550051A3/en
Application granted granted Critical
Publication of EP0550051B1 publication Critical patent/EP0550051B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38—Torches, e.g. for brazing or heating
    • F23D14/42—Torches, e.g. for brazing or heating for cutting

Definitions

  • the invention relates to a machine cutting torch with an internal ignition device according to the preamble of claim 1 and 2 respectively.
  • feeds i.e. Lines are provided on threaded connections for fuel gas and / or heating oxygen, which are connected to a fuel gas and oxygen supply source.
  • the known cutting torch also has a separate threaded connection which leads to a fuel gas / oxygen mixture feed opening into the cutting oxygen channel.
  • the fuel gas / oxygen mixture represents the ignition gas.
  • An electrical ignition device is arranged on the cutting oxygen channel downstream of the junction of the fuel gas / oxygen mixture feed.
  • the fuel gas-oxygen mixture is generated outside the burner body in a mixing point, which is designed as an injector.
  • the injector is part of a pilot gas quantity control device that is directly connected to supply sources for fuel gas and heating oxygen. This should enable the ignition point to be supplied with an ignition gas quantity which is independent of the setting of the heating gases of the cutting torch and which cannot be influenced (DE-OS 35 27 955).
  • the above-mentioned pilot gas quantity control device in each case contains a solenoid valve and a pressure regulator in branch lines to the injector which carry heating oxygen and fuel gas.
  • the pressure regulator is connected to a heating oxygen supply source or to a fuel gas supply source via a connection T-piece.
  • a cutting oxygen line which is connected to the cutting oxygen supply source via a regulating and / or control device, is also attached to the cutting torch via a threaded connection.
  • the supply of the fuel gas-oxygen mixture as Ignition gas thus takes place parallel to the supply of the fuel gas, the heating oxygen and the cutting oxygen to the cutting torch.
  • a separate line for the ignition gas is provided, which in practice is designed as a hose.
  • Such hoses are indeed suitable for the supply of pilot gas or fuel gas, but an accident risk cannot be ruled out if the pilot gas or fuel gas mixture is fed to the cutting torch over the usual long distances. Furthermore, the expenditure on equipment for the pilot gas quantity control device is considerable.
  • the pilot gas in which the pilot gas is also formed and which essentially comprises the mixer for mixing the pilot fuel gas and the pilot oxygen to the pilot gas mixture, pressure regulators for the pilot oxygen and pilot gas, solenoid valves for switching the pilot fuel gas on and off and of the ignition oxygen, which is arranged parallel to the fuel gas and heating oxygen supply and cutting oxygen supply to the cutting torch, occurs because of the larger amount and / or the higher pressure of the latter fuel gas and heating oxygen supply, the problem that this in a small amount or less Pressure-flowing ignition gas mixture reaches the cutting nozzle relatively late.
  • the known control or regulating device for ignition gases is designed such that the ignition gas mixture flows to the cutting torch with a larger quantity and / or greater pressure than the required quantity or pressure only by a control or regulating element arranged in the vicinity of the cutting torch or in the cutting torch to the required Quantity or the required pressure is set.
  • the control or regulating element can be designed as a fine metering valve. It can also be implemented as an orifice with a metering hole.
  • a fine metering valve for optimizing the amount of fuel gas can be arranged on the input side in front of the mixer in the fuel gas line, at least one solenoid valve being arranged on the input side in front of the fine metering valve.
  • the fine metering valve can be assigned adjusting devices which can be adjusted by a control unit as a function of a predetermined mixing ratio or a predetermined amount of the pilot gas mixture.
  • this does not solve the basic disadvantages of supplying the pilot gas mixture to the cutting torch in parallel with the fuel gas and heating oxygen and cutting oxygen.
  • the present invention is based on the object of designing a machine cutting torch with an internal ignition device of the type mentioned at the outset in such a way that the outlay in terms of equipment for the overall arrangement of the flame cutting machine is reduced and operational reliability is increased.
  • the machine cutting torch thus has only connection pieces for the fuel gas, for the heating oxygen and for the cutting oxygen, but no connection for ignition gas. It there is no hose with which pilot gas is fed to the machine cutting torch. That is why the machine cutting torch is relatively inexpensive in terms of device technology, but it is reliable.
  • the arrangement of the mixing point and the heating oxygen pressure regulator in the machine cutting torch further ensures that the ignition gas formed, despite relatively low pressure and / or a low amount, quickly reaches the cutting oxygen channel, which is a component of the machine cutting torch. Since the solenoid valves are also arranged in the machine cutting torch, not only the mixing but also the control of the ignition process can take place in the machine cutting torch. Since the components mentioned are housed within the machine cutting torch, there is a high level of protection against damage.
  • the machine cutting torch is particularly robust and compact if the mixing point and the heating oxygen pressure reducer are integral components of the machine cutting torch.
  • At least one orifice plate is preferably provided, which has a metering opening and is less complex.
  • the machine cutting torch is designed overall with the features that an injector as a pilot gas mixing point, a fuel oxygen pressure reducing orifice and a fuel gas pressure reducing orifice are integral components of the valve body, that at least parts of the solenoid valves are accommodated in the valve body and that the injector is via the fuel gas pressure reducing orifice and the fuel gas solenoid valve is connected to the connection piece for fuel gas and is connected to the connection piece for heating oxygen via the heating oxygen pressure reducing orifice and the heating oxygen solenoid valve.
  • the mixing space for the ignition gas in the valve body is essentially formed by a bore.
  • a finer level regulation can be achieved according to claim 7 with a parallel arrangement of three diaphragms, each of which is preceded by a solenoid valve, in order to preselect the diaphragms individually or together depending on the cutting task by means of a CNC control.
  • a needle valve is arranged in the machine cutting torch between the mixing point and the connecting piece for the fuel gas.
  • the supply of the pilot gas mixture into the cutting oxygen channel of the machine cutting torch and the ignition by an electrical ignition device are conventional. Glow plugs, as are otherwise used for aircraft model construction, are preferably used here, which are therefore available inexpensively practically everywhere.
  • 1, 2 and 3 connecting pieces for cutting oxygen, heating oxygen and fuel gas are designated, which sit on a valve body 4.
  • the machine cutting torch further comprises a torch head 7, which can be connected to the valve body via a pipe (not shown) and into which a cutting oxygen channel 8 opens.
  • An ignition gas bore 9 leads to the ignition gas supply to the cutting oxygen channel.
  • a model spark plug 10 is connected to the cutting oxygen channel downstream of the junction of the pilot gas hole.
  • a fuel gas / heating oxygen mixture supply in the burning head 7 of the machine cutting torch is indicated at 11. It is based on a heating gas injector 12 which is likewise accommodated within the valve body.
  • a needle valve (not shown in the drawing) in the valve body can be provided in a supply of the fuel gas to the injector 12 for heating flame regulation.
  • An injector 14 is formed integrally in the valve body, in which the ignition gas is mixed and is therefore generally referred to as the mixing point of the ignition gas.
  • To supply the injector 14 for the formation of the ignition gas mixture with heating oxygen it is branched off from the heating oxygen supply and fed to the injector 14 via a solenoid valve and an orifice 6 with metering openings.
  • An arrangement of 3 orifices with metering openings can be provided, which are preselected by solenoid valves by means of a CNC control.
  • the fuel gas is supplied to the injector 14 via a solenoid valve 15 and an orifice or a needle valve 16 with a fixed setting.
  • the embodiment of the machine cutting torch according to FIG. 2 differs from that according to FIG. 1 with regard to the heating oxygen supply 24 for the ignition mixture formation.
  • a pressure reducer 17 is switched on instead of an orifice in the heating oxygen supply, which regulates the heating oxygen pressure in the injector 14 independently of fluctuations in the heating oxygen pressure at the connecting piece 2.

Abstract

In a machine cutting torch with an internal ignition device (10) on a cutting oxygen duct (8) which is connected to a mixing point (14) which forms an ignition gas, the mixing point can be connected via a regulating heating oxygen pressure reducer (6) and at least one heating oxygen solenoid valve (5) to a heating oxygen source as well as via a combustion gas solenoid valve (15) to a combustion gas line. The machine cutting torch has, on a valve body (4), connection pieces for combustion gas, for heating oxygen and for cutting oxygen. Advantageously, a heating gas injector (12) is accommodated in the valve body (4). To increase the operational safety, the mixing point (injector 14), the heating oxygen pressure reducer (17) and the solenoid valves (5, 15) are also accommodated in the valve body, and the mixing point (14) is connected via the combustion gas solenoid valve (15) to the connection pieces (3) for combustion gas as well as via the heating oxygen pressure reducer (17) and the heating oxygen solenoid valve (5) to the connection piece (2) for heating oxygen. <IMAGE>

Description

Die Erfindung betrifft einen Maschinenschneidbrenner mit Innenzündeinrichtung nach dem Oberbegriff des Anspruchs 1 bzw.2.The invention relates to a machine cutting torch with an internal ignition device according to the preamble of claim 1 and 2 respectively.

Bei einem derartigen bekannten Maschinenschneidbrenner mit einem Schneidsauerstoffkanal sind Zuführungen, d.h. Leitungen an Gewindeanschlüssen für Brenngas und/oder Heizsauerstoff vorgesehen, die mit einer Brenngas- und Sauerstoffversorgungsquelle verbunden sind. Der bekannte Schneidbrenner weist außerdem einen getrennten Gewindestutzen auf, der zu einer in den Schneidsauerstoffkanal mündenden Brenngas-Sauerstoffgemischzuführung mündet. Das Brenngas-Sauerstoffgemisch stellt das Zündgas dar. An dem Schneidsauerstoffkanal ist eine elektrische Zündeinrichtung stromabwärts der Einmündungsstelle der Brenngas-Sauerstoffgemischzuführung angeordnet. Das Brenngas-Sauerstoffgemisch, wird außerhalb des Brennerkörpers in einer Mischstelle erzeugt, die als Injektor ausgebildet ist. Der Injektor ist Bestandteil einer Zündgasmengenregelvorrichtung, die unmittelbar an Ver-sorgungsquellen für Brenngas und Heizsauerstoff angeschlossen ist. Damit soll eine von der Einstellung der Heizgase des Schneidbrenners unabhängige und unbeeinflußbare Zündgasmenge der Zündstelle zugeführt werden können (DE-OS 35 27 955).In such a known machine cutting torch with a cutting oxygen channel, feeds, i.e. Lines are provided on threaded connections for fuel gas and / or heating oxygen, which are connected to a fuel gas and oxygen supply source. The known cutting torch also has a separate threaded connection which leads to a fuel gas / oxygen mixture feed opening into the cutting oxygen channel. The fuel gas / oxygen mixture represents the ignition gas. An electrical ignition device is arranged on the cutting oxygen channel downstream of the junction of the fuel gas / oxygen mixture feed. The fuel gas-oxygen mixture is generated outside the burner body in a mixing point, which is designed as an injector. The injector is part of a pilot gas quantity control device that is directly connected to supply sources for fuel gas and heating oxygen. This should enable the ignition point to be supplied with an ignition gas quantity which is independent of the setting of the heating gases of the cutting torch and which cannot be influenced (DE-OS 35 27 955).

Die genannte Zündgasmengenregelvorrichtung beinhaltet in Abzweigleitungen zu dem Injektor, die Heizsauerstoff sowie Brenngas führen, jeweils ein Magnetventil und einen Druckregler. Im einzelnen ist der Druckregler über ein Anschluß-T-Stück an eine Heizsauerstoffversorgungsquelle bzw. an eine Brenngasversorgungsquelle angeschlossen. An den Schneidbrenner ist weiterhin über einen Gewindestutzen eine Schneidsauerstoffleitung angebracht, welche über eine Regel- und/oder Steuereinrichtung mit der Schneidsauerstoffversorgungsquelle verbunden ist. Die Zufuhr des Brenngas-Sauerstoffgemisches als Zündgas erfolgt also parallel zu der Zufuhr des Brenngases, des Heizsauerstoffs und des Schneidsauerstoffs zu dem Schneidbrenner. Somit ist eine gesonderte Leitung für das Zündgas vorgesehen, die in der Praxis als Schlauch ausgeführt ist. Derartige Schläuche sind zwar für die Zündgaszufuhr oder Brenngaszufuhr geeignet, jedoch kann gleichwohl ein Unfallrisiko nicht ausgeschlossen werden, wenn über die üblichen langen Wege das Zündgas bzw. Brenngasgemisch dem Schneidbrenner zugeführt wird. Weiterhin ist der apparative Aufwand für die Zündgasmengenregelvorrichtung erheblich.The above-mentioned pilot gas quantity control device in each case contains a solenoid valve and a pressure regulator in branch lines to the injector which carry heating oxygen and fuel gas. In particular, the pressure regulator is connected to a heating oxygen supply source or to a fuel gas supply source via a connection T-piece. A cutting oxygen line, which is connected to the cutting oxygen supply source via a regulating and / or control device, is also attached to the cutting torch via a threaded connection. The supply of the fuel gas-oxygen mixture as Ignition gas thus takes place parallel to the supply of the fuel gas, the heating oxygen and the cutting oxygen to the cutting torch. Thus, a separate line for the ignition gas is provided, which in practice is designed as a hose. Such hoses are indeed suitable for the supply of pilot gas or fuel gas, but an accident risk cannot be ruled out if the pilot gas or fuel gas mixture is fed to the cutting torch over the usual long distances. Furthermore, the expenditure on equipment for the pilot gas quantity control device is considerable.

Bei der bekannten Anordnung der separaten Zündgasmengenregelvorrichtung, in der auch das Zündgas gebildet wird und die dazu im wesentlichen den Mischer zum Mischen des Zündbrenngases und des Zündsauerstoffes zu dem Zündgasgemisch, Druckregler für den Zündsauerstoff und das Zündgas, Magnetventile zum Zu- und Abschalten des Zündbrenngases und des Zündsauerstoffs umfaßt, die parallel zu der Brenngas- und Heizsauerstoffzufuhr sowie Schneidsauerstoffzufuhr an dem Schneidbrenner angeordnet ist, tritt aufgrund der größeren Menge und/oder des höheren Druckes der letztgenannten Brenngas- und Heizsauerstoffzufuhr das Problem auf, daß das in geringer Menge bzw. unter geringem Druck strömende Zündgasgemisch die Schneiddüse erst verhältnismäßig spät erreicht. Dies ist insbesondere bei Brennschneidmaschinen mit einer Vielzahl von Schneidbrennern störend, da der Zündfunke erst in Abhängigkeit von der zuletzt anstehenden Menge des Zündgasgemisches eines Brenners erzeugt werden darf (DE-PS 38 27 750). Um deswegen die Zündzeit zu verringern und eine sichere Zündung zu erreichen, ist die bekannte Steuer- oder Regelvorrichtung für Zündgase so ausgebildet, daß das Zündgasgemisch mit gegenüber der benötigten Menge bzw. dem benötigten Druck größerer Menge und/oder größerem Druck zu dem Schneidbrenner strömt und erst durch ein in der Nähe des Schneidbrenners oder in dem Schneidbrenner angeordnetes Steuer- oder Regelelement auf die benötigte Menge oder den benötigten Druck eingestellt wird. Das Steuer- oder Regelelement kann dabei als Feindosierventil ausgebildet sein. Es kann auch als Blende mit einer Dosierbohrung realisiert sein. Abgesehen davon kann eingangsseitig vor dem Mischer in der Brenngasleitung ein Feindosierventil zur Optimierung der Brenngasmenge angeordnet sein, wobei eingangsseitig vor dem Feindosierventil mindestens ein Magnetventil angeordnet ist. Dem Feindosierventil können Stellvorrichtungen zugeordnet sein, die in Abhängigkeit von einem vorgegebenen Mischungsverhältnis oder einer vorgegebenen Menge des Zündgasgemisches durch eine Steuereinheit verstellbar sind. Die grundsätzlichen Nachteile der Zündgasgemischzufuhr zu dem Schneidbrenner parallel zu dem Brenngas- und Heizsauerstoff sowie Schneidsauerstoff sind damit jedoch nicht gelöst.In the known arrangement of the separate pilot gas quantity control device, in which the pilot gas is also formed and which essentially comprises the mixer for mixing the pilot fuel gas and the pilot oxygen to the pilot gas mixture, pressure regulators for the pilot oxygen and pilot gas, solenoid valves for switching the pilot fuel gas on and off and of the ignition oxygen, which is arranged parallel to the fuel gas and heating oxygen supply and cutting oxygen supply to the cutting torch, occurs because of the larger amount and / or the higher pressure of the latter fuel gas and heating oxygen supply, the problem that this in a small amount or less Pressure-flowing ignition gas mixture reaches the cutting nozzle relatively late. This is particularly troublesome in the case of flame cutting machines with a large number of cutting torches, since the ignition spark may only be generated as a function of the last quantity of the ignition gas mixture of a burner (DE-PS 38 27 750). In order to reduce the ignition time and to achieve a reliable ignition, the known control or regulating device for ignition gases is designed such that the ignition gas mixture flows to the cutting torch with a larger quantity and / or greater pressure than the required quantity or pressure only by a control or regulating element arranged in the vicinity of the cutting torch or in the cutting torch to the required Quantity or the required pressure is set. The control or regulating element can be designed as a fine metering valve. It can also be implemented as an orifice with a metering hole. Apart from this, a fine metering valve for optimizing the amount of fuel gas can be arranged on the input side in front of the mixer in the fuel gas line, at least one solenoid valve being arranged on the input side in front of the fine metering valve. The fine metering valve can be assigned adjusting devices which can be adjusted by a control unit as a function of a predetermined mixing ratio or a predetermined amount of the pilot gas mixture. However, this does not solve the basic disadvantages of supplying the pilot gas mixture to the cutting torch in parallel with the fuel gas and heating oxygen and cutting oxygen.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Maschinenschneidbrenner mit Innenzündeinrichtung der eingangs genannten Gattung so auszubilden, daß der gerätetechnische Aufwand für die Gesamtanordnung der Brennschneidmaschine verringert wird und die Betriebssicherheit erhöht wird.The present invention is based on the object of designing a machine cutting torch with an internal ignition device of the type mentioned at the outset in such a way that the outlay in terms of equipment for the overall arrangement of the flame cutting machine is reduced and operational reliability is increased.

Diese Aufgabe wird durch die in dem kennzeichnenden Teil des Anspruchs 1 angegebene Erfindung gelöst.This object is achieved by the invention specified in the characterizing part of claim 1.

Damit wird erreicht, daß die Mischung des Zündgases nicht mehr vor dem Brenner erfolgt, sondern innerhalb des Ventilkörpers des Brennerkörpers, wobei durch den regulierenden Druckminderer für Heizsauerstoff, der in dem Brennerkörper integriert ist, das Zündgas unabhängig von verschiedenen Eingangsdrücken des Brenners reguliert wird. Es werden damit die Nachteile vermieden, die sonst bei der Zufuhr des für das Schneiden als auch für das Zünden verwendeten Heizsauerstoffs eintreten können. Der Maschinenschneidbrenner weist somit lediglich Anschlußstutzen für das Brenngas, für den Heizsauerstoff und für den Schneidsauerstoff auf, jedoch keinen Anschluß für Zündgas. Es entfällt ein Schlauch, mit dem Zündgas dem Maschinenschneidbrenner zugeführt wird. Deswegen ist der Maschinenschneidbrenner gerätetechnisch verhältnismäßig wenig aufwendig, jedoch betriebssicher. Durch die Anordnung der Mischstelle und des Heizsauerstoffdruckreglers in dem Maschinenschneidbrenner wird weiterhin erreicht, daß das gebildete Zündgas trotz verhältnismäßig geringen Druckes und/oder niedriger Menge rasch in den Schneidsauerstoffkanal gelangt, der Bestand-teil des Maschinenschneidbrenners ist. Da auch die Magnetventile in dem Maschinenschneidbrenner angeordnet sind, kann nicht nur die Mischung, sondern auch die Steuerung des Zündvorgangs in dem Maschinenschneidbrenner ablaufen. Da die genannten Komponenten innerhalb des Maschinenschneidbrenners untergebracht sind, besteht ein hoher Schutz gegen Beschädigungen.This ensures that the ignition gas is no longer mixed in front of the burner, but within the valve body of the burner body, the ignition gas being regulated by the regulating pressure reducer for heating oxygen, which is integrated in the burner body, independently of various input pressures of the burner. This avoids the disadvantages that can otherwise occur when supplying the heating oxygen used for cutting as well as for ignition. The machine cutting torch thus has only connection pieces for the fuel gas, for the heating oxygen and for the cutting oxygen, but no connection for ignition gas. It there is no hose with which pilot gas is fed to the machine cutting torch. That is why the machine cutting torch is relatively inexpensive in terms of device technology, but it is reliable. The arrangement of the mixing point and the heating oxygen pressure regulator in the machine cutting torch further ensures that the ignition gas formed, despite relatively low pressure and / or a low amount, quickly reaches the cutting oxygen channel, which is a component of the machine cutting torch. Since the solenoid valves are also arranged in the machine cutting torch, not only the mixing but also the control of the ignition process can take place in the machine cutting torch. Since the components mentioned are housed within the machine cutting torch, there is a high level of protection against damage.

Besondere Robustheit und Kompaktheit des Maschinenschneidbrenners werden erreicht, wenn die Mischstelle und der Heizsauerstoffdruckminderer integrale Bestandteile des Maschinenschneidbrenners sind.The machine cutting torch is particularly robust and compact if the mixing point and the heating oxygen pressure reducer are integral components of the machine cutting torch.

Dabei wird bevorzugt statt des Heizsauerstoffdruckminderers wenigstens eine Blende vorgesehen, die eine Dosieröffnung aufweist und weniger aufwendig ist.Instead of the heating oxygen pressure reducer, at least one orifice plate is preferably provided, which has a metering opening and is less complex.

In einer bevorzugten Alternative ist der Maschinenschneidbrenner insgesamt mit den Merkmalen ausgebildet, daß ein Injektor als Zündgasmischstelle, eine heizsauerstoffdruckmindernde Blende und eine brenngasdruckmindernde Blende integrale Bestandteile des Ventilkörpers sind, daß zumindest Teile der Magnetventile in dem Ventilkörper untergebracht sind und daß der Injektor über die brenngasdruckmindernde Blende und das Brenngas-Magnetventil mit den Anschlußstutzen für Brenngas in Verbindung steht sowie über die heizsauerstoffdruckmindernde Blende und das Heizsauerstoff-Magnetventil mit dem Anschlußstutzen für Heizsauerstoff in Verbindung steht.In a preferred alternative, the machine cutting torch is designed overall with the features that an injector as a pilot gas mixing point, a fuel oxygen pressure reducing orifice and a fuel gas pressure reducing orifice are integral components of the valve body, that at least parts of the solenoid valves are accommodated in the valve body and that the injector is via the fuel gas pressure reducing orifice and the fuel gas solenoid valve is connected to the connection piece for fuel gas and is connected to the connection piece for heating oxygen via the heating oxygen pressure reducing orifice and the heating oxygen solenoid valve.

Wegen des einfachen inneren Aufbaus des Ventilkörpers ist dieser Maschinenschneidbrenner gerätetechnisch besonders wenig aufwendig. Dabei wird der Mischraum für das Zündgas in dem Ventilkörper im wesentlichen durch eine Bohrung gebildet. Besonders vorteilhaft sind nach Anspruch 3 die Verbindungen, die den Injektor für das Zündgas über die brenngasdruckmindernde Blende und das Brenngas-Magnetventil mit dem Anschlußstutzen für Brenngas sowie über die heizsauerstoffdruckmindernde Blende und das Heizsauerstoff-Magnetventil mit dem Anschlußstutzen für Heizsauerstoff verbinden, jeweils als (Stich-) Bohrungen in dem Ventilkörper ausgeführt. Hierdurch werden die Kompaktheit und der einfache Aufbau des Ventilkörpers weiter gefördert.Because of the simple internal structure of the valve body, this machine cutting torch is particularly inexpensive in terms of device technology. The mixing space for the ignition gas in the valve body is essentially formed by a bore. Particularly advantageous are according to claim 3, the connections that connect the injector for the ignition gas via the fuel gas pressure reducing orifice and the fuel gas solenoid valve with the connection piece for fuel gas and via the heating oxygen pressure reducing orifice and the heating oxygen solenoid valve with the connection piece for heating oxygen, each as (stitch -) Drilled holes in the valve body. This further promotes the compactness and simple construction of the valve body.

Eine feinstufigere Regulierung kann gemäß Anspruch 7 mit einer parallelen Anordnung von drei Blenden erreicht werden, denen je ein Magnetventil vorgeschaltet ist, um die Blenden je nach Schneidaufgabe durch eine CNC-Steuerung einzeln oder gemeinsam vorzuwählen.A finer level regulation can be achieved according to claim 7 with a parallel arrangement of three diaphragms, each of which is preceded by a solenoid valve, in order to preselect the diaphragms individually or together depending on the cutting task by means of a CNC control.

Zur Einstellung des Brenngasdrucks an der Mischstelle ist nach Anspruch 8 bevorzugt vorgesehen, daß in dem Maschinenschneidbrenner zwischen der Mischstelle und dem Anschlußstutzen für das Brenngas ein Nadelventil angeordnet ist.To adjust the fuel gas pressure at the mixing point, it is preferably provided according to claim 8 that a needle valve is arranged in the machine cutting torch between the mixing point and the connecting piece for the fuel gas.

Die Zuführung des Zündgasgemisches in den Schneidsauerstoffkanal des Maschinenschneidbrenners sowie die Zündung durch eine elekrische Zündeinrichtung sind konventionell. Bevorzugt werden hier Glühkerzen eingesetzt, wie sie sonst für den Flugzeugmodellbau verwendet werden, die deshalb praktisch überall kostengünstig erhältlich sind.The supply of the pilot gas mixture into the cutting oxygen channel of the machine cutting torch and the ignition by an electrical ignition device are conventional. Glow plugs, as are otherwise used for aircraft model construction, are preferably used here, which are therefore available inexpensively practically everywhere.

Zwei Ausführungsbeispiele der Erfindung werden im folgenden anhand einer Zeichnung mit zwei Figuren erläutert, in denen die entsprechenden Maschinenschneidbrenner schematisch dargestellt sind. Die Ausführungsform gemäß Fig. 1 ist bevorzugt. In beiden Figuren sind gleiche Teile mit übereinstimmenden Bezugszeichen versehen.Two embodiments of the invention are explained below with reference to a drawing with two figures, in which the corresponding machine cutting torch is shown schematically are. The embodiment according to FIG. 1 is preferred. In both figures, identical parts are provided with the same reference numerals.

In den Zeichnungen sind mit 1, 2 und 3 Anschlußstutzen für Schneidsauerstoff, Heizsauerstoff und Brenngas bezeichnet, die an einem Ventilkörper 4 sitzen. Der Maschinenschneidbrenner umfaßt weiter einen Brennerkopf 7, der über ein nicht dargestelltes Rohr mit dem Ventilkörper verbunden sein kann und in den ein Schneidsauerstoffkanal 8 mündet. Zu dem Schneidsauerstoffkanal führt eine Zündgasbohrung 9 zur Zündgaszufuhr. Stromabwärts der Einmündungsstelle der Zündgasbohrung steht eine Modellbau-Zündkerze 10 mit dem Schneidsauerstoffkanal in Verbindung. Eine Brenngas-Heizsauerstoffgemischzuführung in dem Brennkopf 7 des Maschinenschneidbrenners ist bei 11 angedeutet. Sie geht von einem ebenfalls innerhalb des Ventilkörpers untergebrachten Heizgas-Injektor 12 aus. Ein in der Zeichnung nicht dargestelltes Nadelventil in dem Ventilkörper kann in einer Zuführung des Brenngases zu dem Injektor 12 zur Heizflammenregulierung vorgesehen sein.In the drawings, 1, 2 and 3 connecting pieces for cutting oxygen, heating oxygen and fuel gas are designated, which sit on a valve body 4. The machine cutting torch further comprises a torch head 7, which can be connected to the valve body via a pipe (not shown) and into which a cutting oxygen channel 8 opens. An ignition gas bore 9 leads to the ignition gas supply to the cutting oxygen channel. A model spark plug 10 is connected to the cutting oxygen channel downstream of the junction of the pilot gas hole. A fuel gas / heating oxygen mixture supply in the burning head 7 of the machine cutting torch is indicated at 11. It is based on a heating gas injector 12 which is likewise accommodated within the valve body. A needle valve (not shown in the drawing) in the valve body can be provided in a supply of the fuel gas to the injector 12 for heating flame regulation.

Integral in dem Ventilkörper ist ein Injektor 14 ausgebildet, in dem das Zündgas gemischt wird und deswegen allgemein als Mischstelle des Zündgases bezeichnet ist. Zur Versorgung des Injektors 14 für die Zündgasgemischbildung mit Heizsauerstoff wird dieser von der Heizsauerstoffzuführung abgezweigt und über ein Magnetventil und eine Blende 6 mit Dosieröffnungen dem Injektor 14 zugeführt. Es kann eine Anordnung von 3 Blenden mit Dosieröffnungen vorgesehen sein, die durch Magnetventile mittels einer CNC-Steuerung vorgewählt werden. Eine Zufuhr des Brenngases zu dem Injektor 14 erfolgt über ein Magnetventil 15 sowie eine Blende oder ein Nadelventil 16 mit fester Einstellung.An injector 14 is formed integrally in the valve body, in which the ignition gas is mixed and is therefore generally referred to as the mixing point of the ignition gas. To supply the injector 14 for the formation of the ignition gas mixture with heating oxygen, it is branched off from the heating oxygen supply and fed to the injector 14 via a solenoid valve and an orifice 6 with metering openings. An arrangement of 3 orifices with metering openings can be provided, which are preselected by solenoid valves by means of a CNC control. The fuel gas is supplied to the injector 14 via a solenoid valve 15 and an orifice or a needle valve 16 with a fixed setting.

Die beschriebenen Elemente des Maschinenschneidbrenners mit Ausnahme der äußeren Teile der Anschlußstutzen 1, 2, 3 und gegebenenfalls äußerer Teile der Magnetventile 5, 15 sind innerhalb des Ventilkörpers des Maschinenschneidbrenners angeordnet, wobei insbesondere der Injektor 14 zur Zündgasmischung und die Blenden 15, 16, 17 integrale Bestandteile des Ventilkörpers 4 sind. Verbleibende (Stich-)Leitungen in dem Ventilkörper sind mit strich-punktierten Linien dargestellt. Die Verbindungen ergeben sich damit aus der Zeichnung.The described elements of the machine cutting torch with the exception of the outer parts of the connecting pieces 1, 2, 3 and optionally outer parts of the solenoid valves 5, 15 are arranged within the valve body of the machine cutting torch, in particular the injector 14 for ignition gas mixing and the orifices 15, 16, 17 being integral components of the valve body 4. Remaining (branch) lines in the valve body are shown with dash-dotted lines. The connections thus result from the drawing.

Die Ausführungsform des Maschinenschneidbrenners nach Fig. 2 unterscheidet sich von derjenigen nach Fig. 1 hinsichtlich der Heizsauerstoffzuführung 24 für die Zündgemischbildung. Anstelle einer oder mehrerer paralleler Blenden in Fig. 1 ist in der zweiten Ausführungsform nach Fig. 2 ein Druckminderer 17 statt einer Blende in der Heizsauerstoffzuführung eingeschaltet, der den Heizsauerstoffdruck in dem Injektor 14 unabhängig von Schwankungen des Heizsauerstoffdrucks an dem Anschlußstutzen 2 reguliert.The embodiment of the machine cutting torch according to FIG. 2 differs from that according to FIG. 1 with regard to the heating oxygen supply 24 for the ignition mixture formation. Instead of one or more parallel orifices in FIG. 1, in the second embodiment according to FIG. 2, a pressure reducer 17 is switched on instead of an orifice in the heating oxygen supply, which regulates the heating oxygen pressure in the injector 14 independently of fluctuations in the heating oxygen pressure at the connecting piece 2.

Claims (9)

Maschinenschneidbrenner mit Innenzündeinrichtung an einem Schneidsauerstoffkanal, der mit einer Zündgas bildenden Mischstelle, insbesondere einem Injektor, in Verbindung steht, wobei die Mischstelle über einen regulierenden Heizsauerstoffdruckminderer und wenigstens ein Heizsauerstoff-Magnetventil an eine Heizsauerstoffquelle anschließbar ist sowie über ein Brenngas-Magnetventil an eine Brenngasleitung anschließbar ist und wobei der Maschinenschneidbrenner an einem Ventilkörper Anchlußstutzen für Brenngas, für Heizsauerstoff und für Schneidsauerstoff aufweist, wobei vorzugsweise ein Heizgas-Injektor in dem Ventilkörper untergebracht ist,
dadurch gekennzeichnet,
daß die Mischstelle (Injektor 14), der Heizsauerstoffdruckminderer (17) und die Magnetventile (5, 15) in dem Ventilkörper untergebracht sind und daß die Mischstelle (14) über das Brenngas-Magnetventil (15) mit den Anschlußstutzen (3) für Brenngas sowie über den Heizsauerstoffdruckminderer (17) und das Heizsauerstoff-Magnetventil (5) mit dem Anschlußstutzen (2) für Heizsauerstoff verbunden ist.Machine cutting torch with an internal ignition device on a cutting oxygen channel which is connected to a mixing point which forms an ignition gas, in particular an injector, the mixing point being connectable to a heating oxygen source via a regulating heating oxygen pressure reducer and at least one heating oxygen solenoid valve, and to a fuel gas line via a fuel gas solenoid valve and the machine cutting torch on a valve body has connecting pieces for fuel gas, for heating oxygen and for cutting oxygen, a heating gas injector preferably being accommodated in the valve body,
characterized,
that the mixing point (injector 14), the heating oxygen pressure reducer (17) and the solenoid valves (5, 15) are accommodated in the valve body and that the mixing point (14) via the fuel gas solenoid valve (15) with the connecting piece (3) for fuel gas and is connected via the heating oxygen pressure reducer (17) and the heating oxygen solenoid valve (5) to the connection piece (2) for heating oxygen. Maschinenschneidbrenner mit Innenzündeinrichtung an einem Schneidsauerstoffkanal, der mit einer Zündgas bildenden Mischstelle, insbesondere einem Injektor, in Verbindung steht, wobei die Mischstelle über heizsauerstoffdruckmindernde Mittel und wenigstens ein Heizsauerstoff-Magnetventil an eine Heizsauerstoffquelle anschließbar ist sowie über ein Brenngas-Magnetventil an eine Brenngasleitung anschließbar ist und wobei der Maschinenschneidbrenner an einem Ventilkörper Anchlußstutzen für Brenngas, für Heizsauerstoff und für Schneidsauerstoff aufweist,
dadurch gekennzeichnet,
daß ein Injektor (14) als Zündgasmischstelle eine heizsauerstoffdruckmindernde Blende (6) und eine brenngasdruckmindernde Blende (16) integrale Bestandteile des Ventilkörpers (4) sind, daß zumindest Teile der Magnetventile 5, 15) in dem Ventilkörper (4) untergebracht sind und daß der Injektor (14) über die brenngasdruckmindernde Blende (16) und das Brenngas-Magnetventil (15) mit den Anschlußstutzen (3) für Brenngas in Verbindung steht sowie über die heizsauerstoffdruckmindernde Blende (6) und das Heizsauerstoff-Magnetventil (5) mit dem Anschlußstutzen (2) für Heizsauerstoff in Verbindung steht.Machine cutting torch with an internal ignition device on a cutting oxygen channel, which is connected to a mixing point that forms an ignition gas, in particular an injector, the mixing point being connectable to a heating oxygen source by means of heating-oxygen pressure-reducing means and at least one heating oxygen solenoid valve and being connectable to a fuel gas line via a fuel gas solenoid valve and wherein the machine cutting torch has connecting pieces for fuel gas, for heating oxygen and for cutting oxygen on a valve body,
characterized,
that an injector (14) as a pilot gas mixing point, a heating oxygen pressure reducing orifice (6) and a fuel gas pressure reducing orifice (16) are integral parts of the valve body (4), that at least parts of the solenoid valves 5, 15) are accommodated in the valve body (4) and that The injector (14) is connected via the fuel gas pressure reducing orifice (16) and the fuel gas solenoid valve (15) to the connection piece (3) for fuel gas as well as via the heating oxygen pressure reducing orifice (6) and the heating oxygen solenoid valve (5) to the connection piece ( 2) for heating oxygen. Maschinenschneidbrenner nach Anspruch 2,
dadurch gekennzeichnet,
daß der Injektor (14) für das Zündgas über die brenngasdruckmindernde Blende und das Brenngas-Magnetventil (15) mit dem Anschlußstutzen (3) für Brenngas sowie über die heizsauerstoffdruckmindernde Blende (6) und das Heizsauerstoff-Magnetventil (5) mit dem Anschlußstutzen (2) für Heizsauerstoff jweils über (Stich-)Bohrungen in dem Ventilkörper (4) in Verbindung steht.Machine cutting torch according to claim 2,
characterized,
that the injector (14) for the ignition gas via the fuel gas pressure reducing orifice and the fuel gas solenoid valve (15) with the connection piece (3) for fuel gas as well as over the heating oxygen pressure reducing orifice (6) and the heating oxygen solenoid valve (5) with the connection piece (2 ) for heating oxygen is connected via (tap) holes in the valve body (4). Maschinenschneidbrenner nach Anspruch 1,
dadurch gekennzeichnet,
daß die Mischstelle (14) und der Heizsauerstoffdruckminderer (25) integrale Bestandteile des Maschinenschneidbrenners sind.Machine cutting torch according to claim 1,
characterized,
that the mixing point (14) and the heating oxygen pressure reducer (25) are integral components of the machine cutting torch. Maschinenschneidbrenner nach Anspruch 1 oder 4,
dadurch gekennzeichnet,
daß anstelle des Heizsauerstoffdruckminderers wenigstens eine Blende (6) vorgesehen ist.Machine cutting torch according to claim 1 or 4,
characterized,
that at least one diaphragm (6) is provided instead of the heating oxygen pressure reducer. Maschinenschneidbrenner nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
daß anstelle der heizsauerstoffdruckmindernden Blende (6) ein regulierender Heizsauerstoffdruckminderer (17) vorgesehen ist.Machine cutting torch according to claim 2 or 3,
characterized,
that instead of the heating oxygen pressure reducing orifice (6) a regulating heating oxygen pressure reducing valve (17) is provided. Maschinenschneidbrenner nach Anspruch 3,
dadurch gekennzeichnet,
daß statt des Heizsauerstoffdruckminderers drei strömungsmäßig parallel angeordnete Blenden (18, 19, 20) vorgesehen sind, denen je ein Magnetventil (15, 16, 17) vorgeschaltet ist.Machine cutting torch according to claim 3,
characterized,
that instead of the heating oxygen pressure reducer, three orifices (18, 19, 20) arranged in parallel are provided, each of which has a solenoid valve (15, 16, 17) connected upstream. Maschinenschneidbrenner nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
daß in dem Maschinenschneidbrenner zwischen der Mischstelle (14) und dem Anschlußstutzen (3) für das Brenngas ein Nadelventil angeordnet ist.Machine cutting torch according to one of the preceding claims,
characterized,
that a needle valve is arranged in the machine cutting torch between the mixing point (14) and the connecting piece (3) for the fuel gas. Maschinenschneidbrenner nach einem der vorangehenden Ansprüche,
gekennzeichnet durch
eine Modellbau-Glühkerze (10) als Innenzündeinrichtung in einem Brennerkopf (7).Machine cutting torch according to one of the preceding claims,
marked by
a model glow plug (10) as an internal ignition device in a burner head (7).
EP92122076A 1991-12-28 1992-12-28 Cutting torch of flame cutting machine provided with internal ignition device Expired - Lifetime EP0550051B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002096405A CA2096405A1 (en) 1992-12-28 1993-05-17 Cutting torch machine having an internal ignition device
US08/083,462 US5393223A (en) 1992-12-28 1993-06-30 Cutting torch machine having an internal ignition device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4143144A DE4143144C2 (en) 1991-12-28 1991-12-28 Machine cutting torch with internal ignition device
DE4143144 1991-12-28

Publications (3)

Publication Number Publication Date
EP0550051A2 true EP0550051A2 (en) 1993-07-07
EP0550051A3 EP0550051A3 (en) 1993-10-20
EP0550051B1 EP0550051B1 (en) 1998-12-02

Family

ID=6448221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92122076A Expired - Lifetime EP0550051B1 (en) 1991-12-28 1992-12-28 Cutting torch of flame cutting machine provided with internal ignition device

Country Status (2)

Country Link
EP (1) EP0550051B1 (en)
DE (2) DE4143144C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8303298B2 (en) 2008-04-08 2012-11-06 Victro Equipment Company Advanced gas torch
WO2016008506A1 (en) * 2014-07-14 2016-01-21 Gce Holding Ab Machine cutting torch system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420935C1 (en) 1994-06-16 1995-07-20 Messer Griesheim Schweistechni Cutting burner esp. for Oxyacetylene torch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516511A1 (en) * 1985-05-08 1986-11-13 Messer Griesheim Gmbh, 6000 Frankfurt Cutting torch
DE3527955A1 (en) * 1985-08-03 1987-02-12 Messer Griesheim Gmbh CUTTING TORCH
DE3624504C1 (en) * 1986-07-19 1988-02-11 Messer Griesheim Gmbh Cutting torch with a nozzle, in particular block cutting nozzle
EP0432522A2 (en) * 1989-12-15 1991-06-19 Messer Griesheim Gmbh Method for igniting the main gas supply to individual cutting torches

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827750A1 (en) * 1988-08-16 1990-04-19 Messer Griesheim Gmbh CONTROL OR CONTROL DEVICE FOR IGNITION GAS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516511A1 (en) * 1985-05-08 1986-11-13 Messer Griesheim Gmbh, 6000 Frankfurt Cutting torch
DE3527955A1 (en) * 1985-08-03 1987-02-12 Messer Griesheim Gmbh CUTTING TORCH
DE3624504C1 (en) * 1986-07-19 1988-02-11 Messer Griesheim Gmbh Cutting torch with a nozzle, in particular block cutting nozzle
EP0432522A2 (en) * 1989-12-15 1991-06-19 Messer Griesheim Gmbh Method for igniting the main gas supply to individual cutting torches

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8303298B2 (en) 2008-04-08 2012-11-06 Victro Equipment Company Advanced gas torch
WO2016008506A1 (en) * 2014-07-14 2016-01-21 Gce Holding Ab Machine cutting torch system
CN106413964A (en) * 2014-07-14 2017-02-15 Gce控股公司 Machine cutting torch system
US20170129033A1 (en) * 2014-07-14 2017-05-11 Gce Holding Ab Machine cutting torch system
US10569352B2 (en) 2014-07-14 2020-02-25 Gce Holding Ab Machine cutting torch system
US11110535B2 (en) 2014-07-14 2021-09-07 Gce Holding Ab Machine cutting torch system
US11691211B2 (en) 2014-07-14 2023-07-04 Gce Holding Ab Machine cutting torch system

Also Published As

Publication number Publication date
DE59209578D1 (en) 1999-01-14
EP0550051B1 (en) 1998-12-02
DE4143144A1 (en) 1993-07-01
EP0550051A3 (en) 1993-10-20
DE4143144C2 (en) 1996-06-13

Similar Documents

Publication Publication Date Title
EP1205653B1 (en) Burner with staged fuel injection and method of operation
DE4240222C2 (en) Gas turbine burner
EP0898064B1 (en) Gas engine
DE2812462A1 (en) FEEDING DEVICE FOR GAS FUEL
EP0193838A2 (en) Burner disposition for combustion installations, especially for combustion chambers of gas turbine installations, and method for its operation
EP1036984B1 (en) Premix type gas burner
EP0510006B1 (en) Fitting for connecting at least one hybrid burner to fluid-fuel feed devices
DE3739805C3 (en) Device for regulating the speed of an internal combustion engine
DE202013105011U1 (en) Shutter with stop
EP0550051B1 (en) Cutting torch of flame cutting machine provided with internal ignition device
EP1040262A1 (en) Fuel dosing system
DE3527955C2 (en)
EP0687859B1 (en) Cutting torch
DE10334228A1 (en) Operating premix burner involves selecting second, third further fuel nozzle opening groups, applying fuel to them independently of each other so second, third groups form premixing, diffusion stages
DE2536073A1 (en) Burner head, partic for gaseous fuels - has gas outlet channels sharply divergent from supply pipe axis, and mounted behind plate of the burner
DE3516511A1 (en) Cutting torch
DE3939508A1 (en) Fuel and air intake controller for combustion engine - has two-part annular seating for conical and annular closure members controlling fuel injection air space
DE3624504C1 (en) Cutting torch with a nozzle, in particular block cutting nozzle
DE3827750C2 (en)
EP0432522A2 (en) Method for igniting the main gas supply to individual cutting torches
DE3132994A1 (en) Method and appliance for mixing liquids
DE3826279A1 (en) Gas burner
DE3303915A1 (en) Regulating apparatus for an oil burner
EP0443371A1 (en) Method to control space thrusters
EP1712837A1 (en) Burner assembly and method of operating it

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

Kind code of ref document: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19931027

17Q First examination report despatched

Effective date: 19940916

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

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

REF Corresponds to:

Ref document number: 59209578

Country of ref document: DE

Date of ref document: 19990114

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

Effective date: 19990111

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: DRAGOTTI & ASSOCIATI S.R.L.

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: 20011219

Year of fee payment: 10

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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: 20021228

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

Effective date: 20021228

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

Ref country code: IT

Payment date: 20101217

Year of fee payment: 19

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

Ref country code: FR

Payment date: 20120102

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20111229

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59209578

Country of ref document: DE