EP0036128B1 - Burner for the combustion of liquid fuels in the gaseous state - Google Patents

Burner for the combustion of liquid fuels in the gaseous state Download PDF

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Publication number
EP0036128B1
EP0036128B1 EP81101531A EP81101531A EP0036128B1 EP 0036128 B1 EP0036128 B1 EP 0036128B1 EP 81101531 A EP81101531 A EP 81101531A EP 81101531 A EP81101531 A EP 81101531A EP 0036128 B1 EP0036128 B1 EP 0036128B1
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EP
European Patent Office
Prior art keywords
burner
gasification chamber
gasification
chamber
housing
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Expired
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EP81101531A
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German (de)
French (fr)
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EP0036128A1 (en
Inventor
Adolf Frick
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Stoechio-Matic AG
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Stoechio-Matic AG
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Priority to AT81101531T priority Critical patent/ATE8698T1/en
Publication of EP0036128A1 publication Critical patent/EP0036128A1/en
Application granted granted Critical
Publication of EP0036128B1 publication Critical patent/EP0036128B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/448—Vaporising devices incorporated with burners heated by electrical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/443—Vaporising devices incorporated with burners heated by the main burner flame
    • F23D11/445—Vaporising devices incorporated with burners heated by the main burner flame the flame and the vaporiser not coming into direct contact

Definitions

  • the invention relates to a burner for the combustion of liquid fuels in the gaseous state, with a gasification chamber which is protected by the flame and has no air inlet openings and has an inlet for the liquid fuel and an outlet for the vaporized fuel, and at least one heated wall for evaporating the liquid Fuel, and with a movable cleaning member arranged in the carburetor chamber for cleaning the carburetor walls.
  • EPA-PS 0 006 747 describes a burner in which the liquid fuel is introduced together with air into a helically wound passage in the burner body. The heat of the flame heats the burner body, and the liquid fuel evaporates in the helical passage. The liquid fuel then enters a mixing chamber, is mixed with additional air and escapes through the openings of a burner plate, with a blue glowing flame forming above the burner plate. This flame also heats the burner body and thus provides the necessary heat of vaporization. To start the burner, it is heated by an electric heating coil. This burner has significant disadvantages.
  • CH-PS 365 353 discloses a device operated with liquid fuel, which is intended in particular for internal combustion engines and has an evaporator with an electrical heating element.
  • the evaporator has an inlet for the liquid fuel and outlets for the evaporated fuel.
  • the known device has the disadvantage that deposits can form in the evaporator, which can impair its function.
  • FR-PS 1 312447 describes a burner with a gasification chamber which is heated by a coaxially arranged electrical heating element.
  • a thermostat is provided to control the temperature in the evaporator chamber in a range of e.g. B. to keep 260 ° to 315 ° C.
  • the vaporized fuel enters a compartment of the gasification chamber through a heated helical passage and exits under high pressure through a nozzle, which is cleaned by a bimetallic needle when the burner is switched off.
  • This burner is complicated in structure and has the explicitly mentioned disadvantage that solid residues can form in the gasification chamber.
  • the cleaning member is a motor wiper that rotates quickly.
  • the fuel Since practically no air can enter the gasification chamber, the fuel is gasified in the absence of atmospheric oxygen. This avoids undesirable oxidation of the fuel in the gasification chamber in a manner known per se, so that for this reason alone, practically no solid products are present even after the burner has been in operation for a long time. But even if small amounts of solid substances form on the walls, they are removed in the form of fine dust from the wiper-shaped cleaning element, which rotates quickly with the motor. The whirled up dust leaves the gasification chamber together with the gas. Due to the constantly rotating wiper-shaped cleaning element, the fuel is always finely distributed, which facilitates rapid evaporation and largely prevents the formation of deposits on the walls, so that there is no harmful influence of deposits on the evaporation of the fuel.
  • an electrical heating element for heating at least one wall of the gasification chamber and a temperature sensor for maintaining an optimal gasification temperature are provided. This allows the gasification temperature to be kept in a range in which no coking takes place and any other residues are easily broken down with the wiper and removed in dust form together with the gas from the chamber.
  • the gasification chamber advantageously has the shape of a body of revolution, and the cleaning member is expediently arranged on a concentric axis. This results in a particularly simple construction of the burner.
  • a cylindrical configuration of the gasification chamber has proven to be very useful. But it would also be possible, for example, to design the gasification chamber conically.
  • the cleaning member is expediently formed by a steel brush. Such steel brushes are able to keep the chamber walls constantly clean. To enlarge the surface, the parts of the walls of the carburettor chamber that are swept by the wiper can have grooves. A steel brush is easily able to engage in such grooves.
  • An expedient embodiment of the invention provides that the motor for driving the cleaning member is arranged outside the gasification chamber and that sealing means for the drive axis of the cleaning member are arranged between the gasification chamber and the motor. It would be possible to arrange the rotor of an electric motor within the gasification chamber and to drive it through the stator through the wall of the gasification chamber. This would have the advantage that the carburetor chamber could be kept securely tight. There would then be no risk of an undesired escape of evaporated fuel under pressure in the gasification chamber. However, this risk is accepted in order to be able to use the motor for the fuel pump and / or the blower for driving the wiper-shaped cleaning member.
  • the sealing means are expediently arranged on the end of a tubular part made of a relatively poorly heat-conducting material facing away from the gasification chamber. This prevents the heat from the carburetor chamber from damaging the engine.
  • the tubular part can radiate considerable heat, so that practically no heat reaches the motor via the motor axis. Sealing agents are necessary because a relatively high pressure must be generated in the gasification chamber in order to produce a favorable flame shape.
  • the arrangement of the seal at the end of the tubular part also means that this seal is not exposed to excessively high temperatures.
  • the drive axle is advantageously guided through an opening into the carburetor chamber with little play and the inner diameter of the tubular part is kept only slightly larger than the diameter of the drive axle of the wiper.
  • the tubular part expediently consists of a bellows made of stainless steel.
  • Such bellows are commercially available.
  • the advantage of stainless steel is that it conducts heat relatively poorly.
  • Heat conduction via the drive axle can be further reduced by the fact that the tubular part does not extend all the way to the motor flange, but ends beforehand and the fan is arranged between the seal and the motor. A further cooling effect is then achieved by the air supply, so that the motor is reliably protected against excessive heat.
  • the tubular part can be surrounded by a housing which has at least one air inlet and has at least one air outlet leading to the fan.
  • the flow of fresh air cools the tubular part, which at the same time heats the supply air, which in turn improves the efficiency of the burner.
  • the outlet for the gas produced is advantageously formed by at least one nozzle through which the gas emerges at a relatively high speed.
  • the speed depends primarily on the pressure in the gasification chamber, which in turn depends on the amount of fuel supplied and the nozzle diameter.
  • the gas emerges at a relatively high speed and thus produces the relatively long flame shape desired in most cases.
  • An outlet valve which can be actuated by excess pressure in the interior of the gasification chamber can be provided in the nozzle.
  • This has the advantage that the gas can only flow out of the nozzle when there is excess pressure in the gasification chamber. It is therefore possible to extinguish the burner immediately if the excess pressure in the gasification chamber is reduced.
  • This is advantageously done by means of a solenoid valve which can be actuated when the burner is switched off.
  • the carburetor chamber can be connected to the fuel return line via the solenoid valve. This prevents gasified fuel from being lost. Rather, it condenses in the fuel return line.
  • the nozzle is advantageously surrounded by a flame tube.
  • flame tubes are already known in commercial gas burners and have proven very successful.
  • a flame tube can be arranged because a nozzle is also provided here, through which the pressurized gas formed in the gasification chamber emerges at a relatively high speed.
  • the Flame tube is advantageously arranged on the housing of the gasification chamber. The heat is transferred from the flame tube to the housing.
  • the transition point between the flame tube and the housing is expediently designed in such a way that no heat transfer to the housing of the gasification chamber takes place which exceeds the optimum gasification temperature. It is thus possible for the temperature sensor to continue to be able to control the heating element in such a way that an optimal gasification temperature is maintained in the gasification chamber.
  • the flame tube advantageously has radial air inlets. In this way, the air is further preheated before it contributes to the formation of flames.
  • This arrangement which is known per se, is already known from gas burners for being advantageous per se for flame formation.
  • the burner has a gasification chamber 11, which is formed, for example, by a housing 13.
  • This housing can consist of cast iron: it is connected to the fan housing 18 with a flange 14 and screws 16.
  • the gasification chamber 11 has the shape of a rotating body.
  • the carburetor chamber could also have another shape, e.g. B. a conical.
  • a cleaning element 17 which can be driven by the motor 15.
  • two such cleaning elements 17 are shown.
  • These cleaning members 17 are formed by a steel brush or a brush made of a different, oil-resistant and wear-resistant material. In operation, the cleaning members 17 coat the heatable cylindrical wall 19.
  • This wall 19 is provided with grooves 20 to enlarge the surface.
  • An electric heating element 21 in the form of a heating winding is used to heat the wall 19.
  • a temperature sensor 22 is also provided, with which the heating element 21 can be controlled via a control device (not shown).
  • the heat of the flame 25 can also be used to heat the gasification chamber 11.
  • the heat of the flame tube 27 is transferred to the housing 13.
  • the Motos.3.5 which drives the cleaning elements 17 via the drive shaft 29 arranged concentrically to the gasification chamber 11, also serves to drive the fuel pump 31 in the illustrated embodiment.
  • the fuel is fed via line 33 into the chamber 11, where it wets the wall 19 and is finely distributed by the cleaning members 17 over this wall 19.
  • a line 30 leads from the chamber 11 via a solenoid valve 32 back to the return line 34. This makes it possible to release the pressure in the chamber 11 by opening the solenoid valve 32.
  • the gas entering line 30 condenses because it is rapidly cooled.
  • a tubular part 35 made of a relatively poorly heat-conducting material is arranged between the engine 15 and the housing 13 of the carburetor chamber 11.
  • a seal 37 which, for. B. can be designed as a labyrinth seal. This seal prevents gas from escaping from the gasification chamber 11 on the drive axle 29.
  • the drive shaft 29 leads through the wall of the carburetor chamber 11 with little play.
  • the bellows 35 has an inner diameter which is only slightly larger than the diameter of the drive shaft 29. A relatively small space 39 is therefore created between the bellows 35 and the drive shaft 29, which is in communication with the carburetor chamber 11. A little gasified fuel can penetrate into this space 39.
  • the drive shaft 29 passes through the opening 40 with relatively little play, there is no major exchange of gas between the chamber 11 and the space 39.
  • the temperature in the room 39 is significantly lower than the temperature in the gasification chamber 11. This also contributes to the fact that the bellows 35 radiates considerable heat.
  • the seal 37 and the motor 15 are therefore well protected from the high temperatures in the gasification chamber 11. This protection can be further improved if, as shown, the fan wheel 45 is arranged in a housing 18 directly on the motor 15. The fan wheel 45 is fastened to the motor shaft 29 with a screw 47.
  • the tubular part 35 is surrounded by a housing 48 which has at least one air inlet 49 and at least one air outlet 50 leading to the fan 45.
  • the air supply can be regulated by a flap 51, which is only shown schematically in the drawing. Improved cooling of the bellows 35 is achieved by the air flowing into the space 52. Furthermore, the air within the fan housing 18 contributes to effective thermal insulation between the motor 15 and the hot burner parts.
  • the gas formed in the gasification chamber 11 can flow out through the nozzle 41 at a relatively high gas velocity.
  • the outflow speed can be regulated by appropriate coordination of the nozzle diameter and the fuel supply.
  • the nozzle 41 is surrounded by the flame tube 27. This flame tube has radial air inlets 43 through which the air supplied from the fan housing 18 can flow to the flame via a duct 55.
  • the outflowing gas can be ignited in the usual way, for example by means of an ignition electrode (not shown).
  • the nozzle 41 has an outlet valve 57 which can be actuated by excess pressure in the interior of the gasification chamber 11.
  • This valve has a concentrically arranged valve needle 58 and a bellows 60 that can be extended by the pressure in the chamber 11. If there is no pressure in the chamber, the valve is closed. In the event of an overpressure in the chamber, however, the bellows is lengthened and the valve is thus opened so that gas can flow out of the nozzle 41.
  • the solenoid valve 32 opens so that the pressure in the chamber drops immediately, the valve 57 closes and the flame extinguishes immediately.
  • the hot parts of the burner are surrounded by insulation 61.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)

Abstract

A burner has a gasification chamber (11) without air inlet openings so that the evaporation of fuel takes place essentially without air. A motor (15) drives wipers (17) which distribute the fuel over a heatable wall (19) of a gasification chamber 11 and remove deposits therefrom. A bellows (35) and a ventilator (45) comprise heat barriers between hot portions of the burner and the motor 15.

Description

Die Erfindung betrifft einen Brenner zur Verbrennung von flüssigen Brennstoffen in gasförmigem Zustand, mit einer von der Flamme geschützten, keine Lufteinlassöffnungen aufweisenden Vergaserkammer, die einen Einlass für den flüssigen Brennstoff und einen Auslass für den verdampften Brennstoff aufweist sowie mindestens eine beheizte Wand zur Verdampfung des flüssigen Brennstoffes, und mit einem in der Vergaserkammer angeordneten beweglichen Reinigungsorgan zur Reinigung der Vergaserwände.The invention relates to a burner for the combustion of liquid fuels in the gaseous state, with a gasification chamber which is protected by the flame and has no air inlet openings and has an inlet for the liquid fuel and an outlet for the vaporized fuel, and at least one heated wall for evaporating the liquid Fuel, and with a movable cleaning member arranged in the carburetor chamber for cleaning the carburetor walls.

In der EPA-PS 0 006 747 ist ein Brenner beschrieben, bei dem der flüssige Brennstoff zusammen mit Luft in einen schraubenförmig gewundenen Gang des Brennerkörpers eingegeben wird. Durch die Hitze der Flamme erhitzt sich der Brennerkörper, und es folgt eine Verdampfung des flüssigen Brennstoffes im schraubenförmigen Gang. Der flüssige Brennstoff tritt dann in eine Mischkammer ein, wird mit zusätzlicher Luft vermischt und entweicht durch die Oeffnungen einer Brennerplatte, wobei über der Brennerplatte eine blau leuchtende Flamme entsteht. Diese Flamme erwärmt auch den Brennerkörper und sorgt so für die notwendige Verdampfungswärme. Zum Anfahren des Brenners wird dieser durch eine elektrische Heizspirale erhitzt. Dieser Brenner weist erhebliche Nachteile auf. Bei der Verdampfung des Brennstoffes in Gegenwart von Luft können sich in der als schraubenförmiger Gang ausgebildeten Vergaserkammer unerwünschte Ablagerungen bilden, die bald die Wirksamkeit der Verdampfung erheblich beeinträchtigen. Die relativ kurze Flamme über der Brennplatte erweist sich auch für viele Anwendungszwecke als ungünstig.EPA-PS 0 006 747 describes a burner in which the liquid fuel is introduced together with air into a helically wound passage in the burner body. The heat of the flame heats the burner body, and the liquid fuel evaporates in the helical passage. The liquid fuel then enters a mixing chamber, is mixed with additional air and escapes through the openings of a burner plate, with a blue glowing flame forming above the burner plate. This flame also heats the burner body and thus provides the necessary heat of vaporization. To start the burner, it is heated by an electric heating coil. This burner has significant disadvantages. When the fuel is evaporated in the presence of air, undesirable deposits can form in the gasification chamber, which is designed as a helical passage, and these will soon significantly impair the effectiveness of the evaporation. The relatively short flame above the fuel plate also proves to be unfavorable for many applications.

Durch die CH-PS 365 353 ist ein mit flüssigem Brennstoff betriebenes Gerät bekannt, das insbesondere für Brennkraftmaschinen vorgesehen ist und einen Verdampfer mit einem elektrischen Heizelement aufweist. Der Verdampfer besitzt einen Einlass für den flüssigen Brennstoff und Auslässe für den verdampften Brennstoff. Das vorbekannte Gerät hat den Nachteil, dass sich im Verdampfer Ablagerungen bilden können, die dessen Funktion beeinträchtigen können.CH-PS 365 353 discloses a device operated with liquid fuel, which is intended in particular for internal combustion engines and has an evaporator with an electrical heating element. The evaporator has an inlet for the liquid fuel and outlets for the evaporated fuel. The known device has the disadvantage that deposits can form in the evaporator, which can impair its function.

Durch die US-PS 1 349 923 ist ein Gasgenerator für einen Brenner zur Verbrennung von Kohlenwasserstoffen bekannt geworden, bei welchem die Flammen des Brenners ein Rohr erhitzen, in welches flüssiger Brennstoff eingeleitet wird, der dann verdampft und durch ein Ventil entweichen kann. Das Ventil kann durch einen durch das Rohr führenden Schaft durch ein Handrad betätigt werden. Am Schaft ist eine Schraubenfeder in einer gewindeförmigen Rinne des Schafts eingelegt. Diese Schraubenfeder steht in Kontakt mit der Rohrinnenwandung und befreit diese beim Oeffnen oder Schliessen des Ventils von Kohlenstoffablagerungen. Nachteilig ist jedoch, dass diese Ablagerungen im Innern des Rohrs verbleiben und von Zeit zu Zeit entfernt werden müssen. Da die Temperatur der Einrichtung in keiner Weise geregelt wird, ist die Ablagerungsrate relativ gross, so dass die Einrichtung häufige Unterhaltsarbeiten verlangt.From US-PS 1 349 923 a gas generator for a burner for the combustion of hydrocarbons has become known, in which the flames of the burner heat a tube into which liquid fuel is introduced, which can then evaporate and escape through a valve. The valve can be operated by a handwheel through a shaft leading through the tube. A coil spring is inserted on the shaft in a thread-shaped groove of the shaft. This coil spring is in contact with the inner wall of the tube and removes carbon deposits when the valve is opened or closed. However, it is disadvantageous that these deposits remain inside the tube and have to be removed from time to time. Since the temperature of the device is not regulated in any way, the deposition rate is relatively high, so that the device requires frequent maintenance work.

Die FR-PS 1 312447 beschreibt einen Brenner mit einer Vergaserkammer, die durch ein koaxial angeordnetes elektrisches Heizelement aufgeheizt wird. Ein Thermostat ist vorgesehen, um die Temperatur in der Verdampferkammer in einem Bereich von z. B. 260° bis 315 °C zu halten. Der verdampfte Brennstoff gelangt durch einen geheizten schraubenförmigen Gang in ein Abteil der Vergaserkammer und verlässt diese unter hohem Druck durch eine Düse, die beim Abschalten des Brenners durch eine bimetallbetätigte Nadel jeweils gereinigt wird. Dieser Brenner ist kompliziert im Aufbau und besitzt den ausdrücklich erwähnten Nachteil, dass sich in der Vergaserkammer feste Rückstände bilden können.FR-PS 1 312447 describes a burner with a gasification chamber which is heated by a coaxially arranged electrical heating element. A thermostat is provided to control the temperature in the evaporator chamber in a range of e.g. B. to keep 260 ° to 315 ° C. The vaporized fuel enters a compartment of the gasification chamber through a heated helical passage and exits under high pressure through a nozzle, which is cleaned by a bimetallic needle when the burner is switched off. This burner is complicated in structure and has the explicitly mentioned disadvantage that solid residues can form in the gasification chamber.

Es ist Aufgabe der Erfindung, einen Brenner der eingangs erwähnten Art zu schaffen, bei welchem eine Bildung von Ablagerungen an den Wänden der Vergaserkammer weitgehend verhindert wird und etwaige feste Rückstände abgebaut und in Staubform mit dem Gas aus der Kammer befördert werden.It is an object of the invention to provide a burner of the type mentioned in the introduction, in which the formation of deposits on the walls of the gasification chamber is largely prevented and any solid residues are broken down and transported in dust form with the gas from the chamber.

Gemäss der Erfindung wird dies dadurch erreicht, dass das Reinigungsorgan ein motorisch rasch drehender Wischer ist.According to the invention, this is achieved in that the cleaning member is a motor wiper that rotates quickly.

Da in die Vergaserkammer praktisch keine Luft eindringen kann, erfolgt die Vergasung des Brennstoffes in Abwesenheit von Luftsauerstoff. Dadurch wird in an sich bekannter Weise in der Vergaserkammer eine unerwünschte Oxydation des Brennstoffes vermieden, so dass allein aus diesem Grunde auch nach langer Betriebszeit des Brenners praktisch keine festen Produkte vorhanden sind. Aber auch wenn sich kleine Mengen von festen Stoffen an den Wänden bilden, werden diese in Form von feinem Staub vom sich motorisch rasch drehenden wischerförmigen Reinigungsorgan entfernt. Der aufgewirbelte Staub verlässt zusammen mit dem Gas die Vergaserkammer. Durch das sich stetig drehende wischerförmige Reinigungsorgan wird der Brennstoff immer fein verteilt, was eine rasche Verdampfung erleichtert und eine Bildung von Ablagerungen an den Wänden weitgehend verhindert, so dass kein schädlicher Einfluss von Ablagerungen auf die Verdampfung des Brennstoffes auftritt.Since practically no air can enter the gasification chamber, the fuel is gasified in the absence of atmospheric oxygen. This avoids undesirable oxidation of the fuel in the gasification chamber in a manner known per se, so that for this reason alone, practically no solid products are present even after the burner has been in operation for a long time. But even if small amounts of solid substances form on the walls, they are removed in the form of fine dust from the wiper-shaped cleaning element, which rotates quickly with the motor. The whirled up dust leaves the gasification chamber together with the gas. Due to the constantly rotating wiper-shaped cleaning element, the fuel is always finely distributed, which facilitates rapid evaporation and largely prevents the formation of deposits on the walls, so that there is no harmful influence of deposits on the evaporation of the fuel.

Gemäss einer vorteilhaften Ausführungsform der Erfindung ist ein elektrisches Heizelement zur Beheizung mindestens einer Wand der Vergaserkammer und ein Temperaturfühler zur Aufrechterhaltung einer optimalen Vergasungstemperatur vorgesehen. Dies erlaubt es, die Vergasungstemperatur in einem Bereich zu halten, in welchem keine Verkokung stattfindet und etwaige andere Rückstände leicht mit dem Wischer abgebaut und in Staubform zusammen mit dem Gas aus der Kammer befördert werden.According to an advantageous embodiment of the invention, an electrical heating element for heating at least one wall of the gasification chamber and a temperature sensor for maintaining an optimal gasification temperature are provided. This allows the gasification temperature to be kept in a range in which no coking takes place and any other residues are easily broken down with the wiper and removed in dust form together with the gas from the chamber.

Die Vergaserkammer hat vorteilhaft die Form eines Rotationskörpers, und das Reinigungsorgan ist zweckmässigerweise auf einer konzentrischen Achse angeordnet. Dies ergibt einen besonders einfachen Aufbau des Brenners. Als sehr zweckmässig erweist sich eine zylindrische Ausgestaltung der Vergaserkammer. Es wäre aber auch möglich, die Vergaserkammer beispielsweise konisch auszuführen. Das Reinigungsorgan wird zweckmässigerweise durch eine Stahlbürste gebildet. Solche Stahlbürsten sind in der Lage, die Kammerwände ständig sauber zu halten. Zur Vergrösserung der Oberfläche können die vom Wischer bestrichenen Teile der Wände der Vergaserkammer Rillen aufweisen. Eine Stahlbürste ist ohne weiteres in der Lage, in solche Rillen einzugreifen.The gasification chamber advantageously has the shape of a body of revolution, and the cleaning member is expediently arranged on a concentric axis. This results in a particularly simple construction of the burner. A cylindrical configuration of the gasification chamber has proven to be very useful. But it would also be possible, for example, to design the gasification chamber conically. The cleaning member is expediently formed by a steel brush. Such steel brushes are able to keep the chamber walls constantly clean. To enlarge the surface, the parts of the walls of the carburettor chamber that are swept by the wiper can have grooves. A steel brush is easily able to engage in such grooves.

Eine zweckmässige Ausführungsform der Erfindung sieht vor, dass der motor zum Antrieb des Reinigungsorgans ausserhalb der Vergaserkammer angeordnet ist und dass zwischen der Vergaserkammer und dem Motor Dichtungsmittel für die Antriebsachse des Reinigungsorgans angeordnet sind. Es wäre zwar möglich, den Rotor eines Elektromotors innerhalb der Vergaserkammer anzuordnen und durch den Stator durch die Vergaserkammerwandung hindurch anzutreiben. Dies hätte den Vorteil, dass die Vergaserkammer sicher dicht gehalten werden könnte. Es würde dann keine Gefahr eines unerwünschten Austritts von in der Vergaserkammer unter Druck stehendem verdampftem Brennstoff bestehen. Diese Gefahr wird aber hier in Kauf genommen, um den ohnehin vorhandenen Motor für die Brennstoffpumpe und/oder das Gebläse für den Antrieb des wischerförmigen Reinigungsorgans benützen zu können. Um die Gefahreines Austritts von verdampftem Brennstoff zu mindern, werden zweckmässigerweise die Dichtungsmittel an dem von der Vergaserkammer abgewandten Ende eines rohrförmigen Teils aus einem relativ schlecht wärmeleitenden Material angeordnet. Auf diese Weise wird verhindert, dass sich die Wärme der Vergaserkammer schädlich auf den Motor auswirkt. Der rohrförmige Teil kann erheblich Wärme abstrahlen, so dass praktisch keine Wärme über die Motorachse zum Motor gelangt. Dichtungsmittel sind deshalb notwendig, weil zur Erzeugung einer günstigen Flammenform ein relativ grosser Druck in der Vergaserkammer erzeugt werden muss. Die Anordnung der Dichtung am Ende des rohrförmigen Teils bewirkt auch, dass diese Dichtung nicht übermässig hohen Temperaturen ausgesetzt ist. Um solche Temperaturen in der Nähe der Dichtung und des Motors zu vermeiden, wird die Antriebsachse vorteilhaft mit wenig Spiel durch eine Oeffnung in die Vergaserkammer geführt und der innendurchmesser des rohrförmigen Teils nur wenig grösser gehalten als der Durchmesser der Antriebsachse des Wischers. Bei einer solchen Ausbildung dringt praktisch wenig Gas aus der Vergaserkammer in den Raum zwischen dem rohrförmigen Teil und der Antriebsachse ein, so dass innerhalb des rohrförmigen Teils immer eine wesentlich tiefere Temperatur herrscht als in der Vergaserkammer. Bei dieser tiefen Temperatur findet eine teilweise Kondensation von Brennstoff statt. Diese ist aber sehr gering. Die Kondensation von geringen Brennstoffmengen ist daher nicht schädlich, sondern dient sogar der Schmierung der Dichtung.An expedient embodiment of the invention provides that the motor for driving the cleaning member is arranged outside the gasification chamber and that sealing means for the drive axis of the cleaning member are arranged between the gasification chamber and the motor. It would be possible to arrange the rotor of an electric motor within the gasification chamber and to drive it through the stator through the wall of the gasification chamber. This would have the advantage that the carburetor chamber could be kept securely tight. There would then be no risk of an undesired escape of evaporated fuel under pressure in the gasification chamber. However, this risk is accepted in order to be able to use the motor for the fuel pump and / or the blower for driving the wiper-shaped cleaning member. In order to reduce the risk of vaporized fuel escaping, the sealing means are expediently arranged on the end of a tubular part made of a relatively poorly heat-conducting material facing away from the gasification chamber. This prevents the heat from the carburetor chamber from damaging the engine. The tubular part can radiate considerable heat, so that practically no heat reaches the motor via the motor axis. Sealing agents are necessary because a relatively high pressure must be generated in the gasification chamber in order to produce a favorable flame shape. The arrangement of the seal at the end of the tubular part also means that this seal is not exposed to excessively high temperatures. In order to avoid such temperatures in the vicinity of the seal and the motor, the drive axle is advantageously guided through an opening into the carburetor chamber with little play and the inner diameter of the tubular part is kept only slightly larger than the diameter of the drive axle of the wiper. With such a design, practically little gas penetrates from the gasification chamber into the space between the tubular part and the drive axle, so that there is always a substantially lower temperature inside the tubular part than in the gasification chamber. At this low temperature, fuel condenses partially. But this is very low. The condensation of small amounts of fuel is therefore not harmful, but even serves to lubricate the seal.

Der rohrförmige Teil besteht zweckmässigerweise aus einem Balg aus rostfreiem Stahl. Solche Bälge sind im Handel erhältlich. Rostfreier Stahl hat den Vorteil, dass er Wärme relativ schlecht leitet.The tubular part expediently consists of a bellows made of stainless steel. Such bellows are commercially available. The advantage of stainless steel is that it conducts heat relatively poorly.

Eine Wärmeleitung über die Antriebsachse kann noch dadurch weiter vermindert werden, dass der rohrförmige Teil nicht ganz bis zum Motorflansch reicht, sondern vorher endet und der Lüfter zwischen der Dichtung und dem Motor angeordnet ist. Durch die Luftzufuhr wird dann noch ein weiterer Kühleffekt erreicht, so dass der Motor sicher vor übermässiger Wärme geschützt wird.Heat conduction via the drive axle can be further reduced by the fact that the tubular part does not extend all the way to the motor flange, but ends beforehand and the fan is arranged between the seal and the motor. A further cooling effect is then achieved by the air supply, so that the motor is reliably protected against excessive heat.

Der rohrförmige Teil kann von einem Gehäuse umgeben sein, das mindestens einen Lufteinlass aufweist und mindestens einen zum Lüfter führenden Luftauslass besitzt. Durch die Umströmung mit Frischluft wird der rohrförmige Teil gekühlt, wodurch zugleich eine Erwärmung der Zuluft erreicht wird, was wiederum den Wirkungsgrad des Brenners verbessert.The tubular part can be surrounded by a housing which has at least one air inlet and has at least one air outlet leading to the fan. The flow of fresh air cools the tubular part, which at the same time heats the supply air, which in turn improves the efficiency of the burner.

Mit Vorteil wird der Auslass für das erzeugte Gas durch mindestens eine Düse gebildet, durch die das Gas mit relativ hoher Geschwindigkeit austritt. Die Geschwindigkeit hängt dabei in erster Linie vom Druck in der Vergaserkammer ab, der seinerseits von der Menge des zugeführten Brennstoffes und dem Düsendurchmesser abhängt. Bei relativ hohem Druck in der Vergaserkammer tritt also das Gas mit relativ hoher Geschwindigkeit aus und erzeugt so die in den meisten Fällen gewünschte, relativ lange Flammenform.The outlet for the gas produced is advantageously formed by at least one nozzle through which the gas emerges at a relatively high speed. The speed depends primarily on the pressure in the gasification chamber, which in turn depends on the amount of fuel supplied and the nozzle diameter. At a relatively high pressure in the gasification chamber, the gas emerges at a relatively high speed and thus produces the relatively long flame shape desired in most cases.

Bei der Düse kann ein durch Ueberdruck im Innern der Vergaserkammer betätigbares Auslassventil vorgesehen sein. Dies hat den Vorteil, dass das Gas nur bei Ueberdruck in der Vergaserkammer aus der Düse ausfliessen kann. Es ist daher möglich, den Brenner sofort zum erlöschen zu bringen, wenn der Ueberdruck in der Vergaserkammer abgesenkt wird. Dies geschieht vorteilhaft durch ein beim Abschalten des Brenners betätigbares Magnetventil. Dabei kann die Vergaserkammer über das Magnetventil an die Brennstoffrückführleitung angeschlossen werden. Dadurch wird vermieden, dass vergaster Brennstoff verloren geht. Dieser kondensiert vielmehr in der Brennstoffrückführleitung.An outlet valve which can be actuated by excess pressure in the interior of the gasification chamber can be provided in the nozzle. This has the advantage that the gas can only flow out of the nozzle when there is excess pressure in the gasification chamber. It is therefore possible to extinguish the burner immediately if the excess pressure in the gasification chamber is reduced. This is advantageously done by means of a solenoid valve which can be actuated when the burner is switched off. The carburetor chamber can be connected to the fuel return line via the solenoid valve. This prevents gasified fuel from being lost. Rather, it condenses in the fuel return line.

Die Düse ist vorteilhaft von einem Flammrohr umgeben. Solche Flammrohre sind bereits bei kommerziellen Gasbrennern bekannt und haben sich sehr bewährt. Beim erfindungsgemässen Brenner wird die Anordnung eines solchen Flammrohres möglich, weil hier ebenfalls eine Düse vorgesehen ist, durch die das in der Vergaserkammer gebildete, unter Druck stehende Gas mit relativ hoher Geschwindigkeit austritt. Das Flammrohr ist vorteilhaft am Gehäuse der Vergaserkammer angeordnet. Dabei erfolgt die Uebertragung von Wärme vom Flammrohr zum Gehäusp. Zweckmässigerwelse ist jedoch die Uebergangsstelle zwischen Flammrohr und Gehäuse so ausgestaltet, dass keine die optimale Vergasurgstemperatur überschreitende Wärmeübertragung zum Gehäuse der Vergaserkammer stattfindet. So ist es möglich, dass der Temperaturfühler weiterhin in der Lage bleibt, das Heizelement so zu steuern, dass eine optimale Vergasungstemperatur in der Vergaserkammer aufrechterhalten wird.The nozzle is advantageously surrounded by a flame tube. Such flame tubes are already known in commercial gas burners and have proven very successful. In the burner according to the invention, such a flame tube can be arranged because a nozzle is also provided here, through which the pressurized gas formed in the gasification chamber emerges at a relatively high speed. The Flame tube is advantageously arranged on the housing of the gasification chamber. The heat is transferred from the flame tube to the housing. However, the transition point between the flame tube and the housing is expediently designed in such a way that no heat transfer to the housing of the gasification chamber takes place which exceeds the optimum gasification temperature. It is thus possible for the temperature sensor to continue to be able to control the heating element in such a way that an optimal gasification temperature is maintained in the gasification chamber.

Das Flammrohr besitzt vorteilhaft radiale Lufteinlässe. Auf diese Weise wird die Luft weiter vorgewärmt, bevor sie zur Flammenbildung beiträgt. Diese an sich bekannte Anordnung ist bereits von Gasbrennern her für an sich vorteilhaft für die Flammenbildung bekannt.The flame tube advantageously has radial air inlets. In this way, the air is further preheated before it contributes to the formation of flames. This arrangement, which is known per se, is already known from gas burners for being advantageous per se for flame formation.

Ein Ausführungsbeispiel der Erfindung wird nun unter Bezugnahme auf die Zeichnung beschrieben.An embodiment of the invention will now be described with reference to the drawing.

Der Brenner besitzt eine Vergaserkammer 11, die beispielsweise durch ein Gehäuse 13 gebildet wird. Dieses Gehäuse kann aus Gusseisen bestehen: Es Ist mit einem Flansch 14 und Schrauben 16 mit dem Lüftergehäuse 18 verbunden. Beim gezeigten Ausführungsbeispiel hat die Vergaserkammer 11 die Form eines Rotationskörpers. Statt der gezeigten zylindrischen Form könnte die Vergaserkammer auch eine andere Form haben, z. B. eine konische. In der Vergaserkammer 11 befindet sich ein vom Motor 15 antreibbares Reinigungsorgan 17. Beim gezeigten Ausführungsbeispiel sind zwei solche Reinigungsorgane 17 eingezeichnet. Diese Reinigungsorgane 17 werden durch eine Stahlbürste oder eine Bürste aus einem anderen, ölbeständigen und verschleissfesten Material gebildet. Im Betrieb bestreichen die Reinigungsorgane 17 die beheizbare zylinderförmige Wand 19. Diese Wand 19 ist zur Vergrösserung der Oberfläche mit Rillen 20 versehen. Zur Heizung der Wand 19 dient ein elektrisches Heizelement 21 in Form einer Heizwicklung. Zur Aufrechterhaltung einer optimalen Vergasungstemperatur ist ferner ein Temperaturfühler 22 vorgesehen, mit dem über eine nicht eingezeichnete Regeleinrichtung das Heizelement 21 gesteuert werden kann. Im Betrieb des Brenners kann zur Heizung der Vergaserkammer 11 auch die Wärme der Flamme 25 ausgenutzt werden. So wird denn beim gezeigten Ausführungsbeispiel die Wärme des Flammrohrs 27 auf das Gehäuse 13 übertragen. Dabei muss aber darauf geachtet werden, dass die Uebertragungssteiie zwischen Flammrohr 27 und Gehäuse 13 so ausgestaltet ist, dass nicht zuviel Wärme übertragen wird.. Das Wärmedefizit kann dann leicht durch das Heizelement 21 ausgeglichen werden. Auf diese Weise wird eine genaue Regeiung der Verdampfungstemperatur ermöglicht, aber der Verbrauch an elektrischer Energie klein gehaiten. Der Motos.3.5, der'über die konzentrisch zur Vergaserkammer 11 angeordnete Antriebsachse 29 die Reinlgungsorgane 17 antreibt, dient beim gezeichneten Ausführungsbeispiel auch zum Antrieb der Brennstoffpumpe 31. Der Brennstoff wird über die Leitung 33 in die Kammer 11 geführt, benetzt dort die Wandung 19 und wird von den Reinigungsorganen 17 über diese Wandung 19 fein verteilt. Von der Kammer 11 führt eine Leitung 30 über ein Magnetventil 32 zurück zur Rückführleitung 34. Dies ermöglicht es, durch Oeffnen des Magnetventils 32 den Druck in der Kammer 11 abzulassen. Das in die Leitung 30 eintretende Gas kondensiert, da es rasch abgekühlt wird.The burner has a gasification chamber 11, which is formed, for example, by a housing 13. This housing can consist of cast iron: it is connected to the fan housing 18 with a flange 14 and screws 16. In the embodiment shown, the gasification chamber 11 has the shape of a rotating body. Instead of the cylindrical shape shown, the carburetor chamber could also have another shape, e.g. B. a conical. In the gasification chamber 11 there is a cleaning element 17 which can be driven by the motor 15. In the exemplary embodiment shown, two such cleaning elements 17 are shown. These cleaning members 17 are formed by a steel brush or a brush made of a different, oil-resistant and wear-resistant material. In operation, the cleaning members 17 coat the heatable cylindrical wall 19. This wall 19 is provided with grooves 20 to enlarge the surface. An electric heating element 21 in the form of a heating winding is used to heat the wall 19. To maintain an optimal gasification temperature, a temperature sensor 22 is also provided, with which the heating element 21 can be controlled via a control device (not shown). When the burner is in operation, the heat of the flame 25 can also be used to heat the gasification chamber 11. Thus, in the exemplary embodiment shown, the heat of the flame tube 27 is transferred to the housing 13. However, care must be taken to ensure that the transmission part between the flame tube 27 and the housing 13 is designed such that not too much heat is transferred. The heat deficit can then be easily compensated for by the heating element 21. In this way, precise control of the evaporation temperature is made possible, but the consumption of electrical energy is kept low. The Motos.3.5, which drives the cleaning elements 17 via the drive shaft 29 arranged concentrically to the gasification chamber 11, also serves to drive the fuel pump 31 in the illustrated embodiment. The fuel is fed via line 33 into the chamber 11, where it wets the wall 19 and is finely distributed by the cleaning members 17 over this wall 19. A line 30 leads from the chamber 11 via a solenoid valve 32 back to the return line 34. This makes it possible to release the pressure in the chamber 11 by opening the solenoid valve 32. The gas entering line 30 condenses because it is rapidly cooled.

Zwischen dem Motor 15 und dem Gehäuse 13 der Vergaserkammer 11 ist ein rohrförmlger Teils 35 aus einem relativ schlecht wärmeleitenden Material angeordnet. Am Ende des rohrförmigen Teils 35 befindet sich eine Dichtung 37, die z. B. als Labyrinthdichtung ausgebildet sein kann. Diese Dichtung, verhindert, dass bei der Antriebsachse 29 Gas aus der Vergaserkammer 11 austreten kann. Die Antriebsachse 29 führt mit wenig Spiel durch die Wandung der Vergaserkammer 11. Es ist ersichtlich, dass der Balg 35 einen nur unwesentlich grösseren Innendurchmesser aufweist als der Durchmesser der Antriebsachse 29 beträgt. Es entsteht daher zwischen dem Balg 35 und der Antriebsachse 29 ein relativ kleiner Raum 39, der mit der Vergaserkammer 11 in Verbindung steht. In diesen Raum 39 kann etwas vergaster Brennstoff eindringen. Da aber die Antriebsachse 29 mit relativ wenig Spiel durch die Oeffnung 40 geht, findet kein grosser Austausch von Gas zwischen der Kammer 11 und dem raum 39 statt. infolgedessen ist die Temperatur im Raum 39 wesentlich tiefer als die Temperatur in der Vergasungskammer 11. Dazu trägt auch bei, dass der Balg 35 erheblich Wärme abstrahlt. Die Dichtung 37 und der Motor 15 sind daher vor den hohen Temperaturen in der Vergaserkammer 11 gut geschützt. Dieser Schutz kann noch dadurch verbessert werden, wenn wie gezeigt, das Lüfterrad 45 in einem Gehäuse 18 direkt am Motor 15 angeordnet wird. Das Lüfterrad 45 ist mit einer Schraube 47 auf der Motorwelle 29 befestigt.Between the engine 15 and the housing 13 of the carburetor chamber 11, a tubular part 35 made of a relatively poorly heat-conducting material is arranged. At the end of the tubular part 35 there is a seal 37 which, for. B. can be designed as a labyrinth seal. This seal prevents gas from escaping from the gasification chamber 11 on the drive axle 29. The drive shaft 29 leads through the wall of the carburetor chamber 11 with little play. It can be seen that the bellows 35 has an inner diameter which is only slightly larger than the diameter of the drive shaft 29. A relatively small space 39 is therefore created between the bellows 35 and the drive shaft 29, which is in communication with the carburetor chamber 11. A little gasified fuel can penetrate into this space 39. However, since the drive shaft 29 passes through the opening 40 with relatively little play, there is no major exchange of gas between the chamber 11 and the space 39. As a result, the temperature in the room 39 is significantly lower than the temperature in the gasification chamber 11. This also contributes to the fact that the bellows 35 radiates considerable heat. The seal 37 and the motor 15 are therefore well protected from the high temperatures in the gasification chamber 11. This protection can be further improved if, as shown, the fan wheel 45 is arranged in a housing 18 directly on the motor 15. The fan wheel 45 is fastened to the motor shaft 29 with a screw 47.

Der rohrförmige Teil 35 ist von einem Gehäuse 48 umgeben, das mindestens einen Lufteinlass 49 und mindestens einen zum Lüfter 45 führenden Luftauslass 50 besitzt. Durch eine Klappe 51, die in der .Zeichnung nur schematisch eingezejcitne ist, kann die Luftzufuhr geregelt werden; Durch die In den Raum 52 einströmende Luft wird eine verbesserte Kühlung des Balges 35 erreicnt. Weiter trägt die Luft Innerhalb des Lüftergehäuses 18 zu einer wirksamen thermischen Isolation zwischen Motor 15 und den heissen Brennerteiien bei.The tubular part 35 is surrounded by a housing 48 which has at least one air inlet 49 and at least one air outlet 50 leading to the fan 45. The air supply can be regulated by a flap 51, which is only shown schematically in the drawing. Improved cooling of the bellows 35 is achieved by the air flowing into the space 52. Furthermore, the air within the fan housing 18 contributes to effective thermal insulation between the motor 15 and the hot burner parts.

Das in der Vergaserkammer 11 gebildete .Gas kann durch die Düse 41 mit relativ hoher Ga. schwindigkeit ausströmen. Durch entsprechende Abstimmung des Düsendurchmessers und der Brennstoffzufuhr kann die Ausströmgeschwindigkeit geregelt werden, Die Düse 41 ist vom Flammrohr 27 umgeben. Dieses Flammrohr weist radiale Lufteinlässe 43 auf, durch die die aus dem Lüftergehäuse 18 über einen Kanal 55 zugeführte Luft zur Flamme strömen kann. Die Zündung des ausströmenden Gases kann auf übliche Weise erfolgen, beispielsweise durch eine nicht eingezeichnete Zündelektrode.The gas formed in the gasification chamber 11 can flow out through the nozzle 41 at a relatively high gas velocity. The outflow speed can be regulated by appropriate coordination of the nozzle diameter and the fuel supply. The nozzle 41 is surrounded by the flame tube 27. This flame tube has radial air inlets 43 through which the air supplied from the fan housing 18 can flow to the flame via a duct 55. The outflowing gas can be ignited in the usual way, for example by means of an ignition electrode (not shown).

Bei der Düse 41 ist beim gezeigten Ausführungsbeispiel ein durch Ueberdruck im Innern der Vergaserkammer 11 betätigbares Auslassventil 57 vorgesehen. Dieses Ventil besitzt eine konzentrisch angeordnete Ventilnadel 58 und einen durch den Druck in der Kammer 11 verlängerbaren Balg 60. Befindet sich kein Druck in der Kammer, so ist das Ventil geschlossen. Bei einem Ueberdruck in der Kammer wird hingegen der Balg verlängert und somit das Ventil geöffnet, so dass Gas aus der Düse 41 ausströmen kann. Beim Abschalten des Brenners öffnet das Magnetventil 32, so dass der Druck in der Kammer sofort abfällt, das Ventil 57 schliesst und die Flamme sofort erlischt.In the embodiment shown, the nozzle 41 has an outlet valve 57 which can be actuated by excess pressure in the interior of the gasification chamber 11. This valve has a concentrically arranged valve needle 58 and a bellows 60 that can be extended by the pressure in the chamber 11. If there is no pressure in the chamber, the valve is closed. In the event of an overpressure in the chamber, however, the bellows is lengthened and the valve is thus opened so that gas can flow out of the nozzle 41. When the burner is switched off, the solenoid valve 32 opens so that the pressure in the chamber drops immediately, the valve 57 closes and the flame extinguishes immediately.

Die heissen Teile des Brenners sind mit einer isolation 61 umgeben.The hot parts of the burner are surrounded by insulation 61.

Claims (20)

1. A burner for the combustion of liquid fuels in the gazeous state comprising a gasification chamber (11) without air inlets and being protected from the flame and comprising an inlet for liquid fuel, an outlet for gasified fuel, and at least one heatable wall (19) for gasifying liquid fuel, characterized in that the cleaning member (17) is a fast rotating motor-driven wiper.
2. The burner as claimed in claim 1, characterized in that an electric heating element (21) is provided to heat at least one wall of the gasification chamber (11), and in that a temperature sensor (22) is provided to maintain an optimal gasification temperature at the- housing (13) of the gasification chamber (11).
3. The burner as claimed in claim 1 or 2, - characterized- in that the gasification chamber has the form of a solid of revolution and in that the wiper (17) is located on a concentric drive shaft (29).
4: The burner as claimed in claim 3, characterized in that the gasification chamber (11) is cylindrical.
5. The burner as claimed in one-of-the claims 1 to 4, characterized in that the cleaning member (17). is a steel brush.
6. The burner as claimed in one-of the claims 1 to 5, characterized in that the wall (19) of the gasification chamber (11) is provided with grooves (20).
7. The burner as claimed in one of the claims 1 to 6, characterized in that the motor (15) for driving the cleaning member (17) is located outside of the gasification chamber (11), and in that between the gasification chamber (11) and the motor (15) sealing means (37) for the drive shaft (29) of the cleaning member (17) are provided.
8. A burner as claimed in claim 7, characterized in that the sealing means (37) are located at the end distant from the gasification chamber (11) of a tubular member (35) of relatively poorly heat- conducting material.
9. The burner as claimed in claim 8, characterized in that the drive shaft (29) extends with little clearance through an opening (40) in the gasification chamber, and in that the internal diameter of the tubular member (35) is slightly larger than the diameter of the drive shaft (29) of the wiper (17).
10. The burner as claimed in claim 8 or 9, characterized in that the tubular member comprises a bellow (35) of stainless steel.
11. The burner as claimed in one of the claims 8 to 9, characterized in that a ventilator (45) is located between the seal (37) and the motor (15).
12. The burner as claimed in claim 11, characterized in that the tubular member (35) is surrounded by a housing (48) comprising at least one air inlet (49) and at least one air outlet (50) leading to the ventilator (45).
13. The burner as claimed in one of the claims 1 to 12, characterized in that the gasification chamber comprises an outlet for the gas generated, said outlet being formed by at least one nozzle (41) through which the gas exits at relatively high velocity.
14. The burner as claimed in claim 13, characterized in that a discharge valve (57) responsive to overpressure in the interior of the gasification chamber (11) is provided.
15. The burner as claimed in claim 13 or 14, characterized in that for switching-off the burner a solenoid valve (32) for venting overpressure from the gasification chamber (11) is provided.
16. The burner as claimed in claim 15, characterized in that the gasification chamber is connectable to the fuel return line (34) by the solenoid valve (32).
17. The burner as claimed in one of the claims 12 to 16, characterized in that the nozzle (41) is surrounded by a flame tube (27).
18. The burner as claimed in claim 17, characterized in that the flame tube (27) is located on the housing (13) of the gasification chamber.
19. The burner as claimed in claim 18, characterized in that the region of transition between the flame tube (27) and the housing (13) is such that no heat transfer exceeding the optimum gasification temperature is taking place to the housing (13).
20. The burner as claimed in one of the claims 17 to 19, characterized in that the flame tube (27) has radial air inlets (43).
EP81101531A 1980-03-14 1981-03-04 Burner for the combustion of liquid fuels in the gaseous state Expired EP0036128B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101531T ATE8698T1 (en) 1980-03-14 1981-03-04 BURNERS FOR COMBUSTION OF LIQUID FUELS IN THE GASEOUS STATE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2001/80 1980-03-14
CH200180 1980-03-14

Publications (2)

Publication Number Publication Date
EP0036128A1 EP0036128A1 (en) 1981-09-23
EP0036128B1 true EP0036128B1 (en) 1984-07-25

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US (1) US4421475A (en)
EP (1) EP0036128B1 (en)
JP (1) JPS56142306A (en)
AT (1) ATE8698T1 (en)
CA (1) CA1178190A (en)
DE (2) DE3164957D1 (en)
ES (1) ES8207322A1 (en)
MX (1) MX152934A (en)
NO (1) NO810868L (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081833A1 (en) * 1981-12-14 1983-06-22 Stoechio-Matic AG Process for the combustion of liquid fuel in the gaseous state
FR2536507A1 (en) * 1982-11-24 1984-05-25 Danfoss As METHOD FOR OPERATING A GASIFICATION BURNER FOR LIQUID FUEL, GASIFICATION BURNER AND CONTROL DEVICE FOR CARRYING OUT SAID METHOD
FR2536505A1 (en) * 1982-11-24 1984-05-25 Danfoss As GASIFICATION BURNER FOR LIQUID FUELS
EP0207885A1 (en) * 1985-03-15 1987-01-07 MVT Micro-Verschleiss-Technik und Apparatebau AG Burner with a gasifier
EP0232677A1 (en) * 1985-12-30 1987-08-19 VTH AG Verfahrenstechnik für Heizung Burner, particularly burner for burning liquid fuel in gaseous state
EP0410707A2 (en) * 1989-07-25 1991-01-30 Adventec Limited Heating apparatus

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DE3861600D1 (en) * 1987-03-13 1991-02-28 Fuellemann Patent Ag Brenner.
US6200430B1 (en) 1998-01-16 2001-03-13 Edgar J. Robert Electric arc gasifier method and equipment
US10041444B2 (en) * 2014-09-05 2018-08-07 United Technologies Corporation Variable orifice jet for a turbine engine

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GB446050A (en) * 1934-07-16 1936-04-23 Nikolaus Heber Burner for liquid fuels
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081833A1 (en) * 1981-12-14 1983-06-22 Stoechio-Matic AG Process for the combustion of liquid fuel in the gaseous state
US4509914A (en) * 1981-12-14 1985-04-09 Stoechio-Matic Ag Apparatus for the combustion of liquid fuels in the gaseous state
EP0136522A1 (en) * 1981-12-14 1985-04-10 Stoechio-Matic AG Method for the combustion of fluid fuel in the gaseous state
FR2536507A1 (en) * 1982-11-24 1984-05-25 Danfoss As METHOD FOR OPERATING A GASIFICATION BURNER FOR LIQUID FUEL, GASIFICATION BURNER AND CONTROL DEVICE FOR CARRYING OUT SAID METHOD
FR2536505A1 (en) * 1982-11-24 1984-05-25 Danfoss As GASIFICATION BURNER FOR LIQUID FUELS
EP0207885A1 (en) * 1985-03-15 1987-01-07 MVT Micro-Verschleiss-Technik und Apparatebau AG Burner with a gasifier
EP0232677A1 (en) * 1985-12-30 1987-08-19 VTH AG Verfahrenstechnik für Heizung Burner, particularly burner for burning liquid fuel in gaseous state
EP0410707A2 (en) * 1989-07-25 1991-01-30 Adventec Limited Heating apparatus
EP0410707A3 (en) * 1989-07-25 1991-06-12 Adventec Limited Heating apparatus

Also Published As

Publication number Publication date
NO810868L (en) 1981-09-15
US4421475A (en) 1983-12-20
CA1178190A (en) 1984-11-20
ES500319A0 (en) 1982-09-01
DE3109512C2 (en) 1983-01-20
DE3109512A1 (en) 1982-01-28
ATE8698T1 (en) 1984-08-15
DE3164957D1 (en) 1984-08-30
MX152934A (en) 1986-07-03
JPS56142306A (en) 1981-11-06
ES8207322A1 (en) 1982-09-01
EP0036128A1 (en) 1981-09-23

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