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EP0092057B1 - Oscillating column burner - Google Patents

Oscillating column burner Download PDF

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Publication number
EP0092057B1
EP0092057B1 EP83102666A EP83102666A EP0092057B1 EP 0092057 B1 EP0092057 B1 EP 0092057B1 EP 83102666 A EP83102666 A EP 83102666A EP 83102666 A EP83102666 A EP 83102666A EP 0092057 B1 EP0092057 B1 EP 0092057B1
Authority
EP
European Patent Office
Prior art keywords
fuel
valve
nozzle
starting
conduit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83102666A
Other languages
German (de)
French (fr)
Other versions
EP0092057A2 (en
EP0092057A3 (en
Inventor
Karl-Heinz Dr. Stahl
M. Fend
Werner Stahl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT83102666T priority Critical patent/ATE17031T1/en
Publication of EP0092057A2 publication Critical patent/EP0092057A2/en
Publication of EP0092057A3 publication Critical patent/EP0092057A3/en
Application granted granted Critical
Publication of EP0092057B1 publication Critical patent/EP0092057B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C15/00—Apparatus in which combustion takes place in pulses influenced by acoustic resonance in a gas mass
    • 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
    • F23D11/42—Starting devices

Definitions

  • the invention relates to an oscillating burner according to the preamble of claim 1.
  • the fuel / air ratio which enters the combustion chamber when starting is dependent on the type of actuation of the starting air pump. In addition, this ratio is dependent on the level of the fuel in the fuel tank. The same applies to an oscillating burner known from FR-PS 1374195.
  • the object of the invention is to make the fuel-air ratio when starting independent of the type of actuation of the starting air pump and the level in the fuel tank.
  • the solution to this problem is specified in the characterizing part of claim 1.
  • the amount of fuel that enters the combustion chamber through the nozzle is, when using the invention, dependent on the amount of displacement of the wall and this amount in turn depends on the amount of compressed air supplied by the starting air pump.
  • the fuel-air ratio is evened out when starting.
  • Even when the burner is running, the amount of fuel supplied is largely independent of the fuel level in the fuel tank.
  • the valve can be opened in the last phase of starting, which is also useful for making the above-mentioned quantitative ratio more uniform when starting.
  • an embodiment according to claim 2 is preferably provided.
  • the oscillating burner according to the exemplary embodiment has a combustion chamber 2, to which a nozzle 4 leads for the periodic intake of liquid fuel.
  • the outlet cross section of this nozzle 4 can be adjusted by means of an adjusting screw 6.
  • the nozzle 4 is connected via a line 10 containing a check valve 8 to a fuel tank 12 which may be filled to the level 14 with liquid fuel.
  • a start-up air pump 18, which can be actuated by hand in the direction of the arrow 16, generates an air stream which sweeps over the nozzle 4 and is directed toward the combustion chamber 2.
  • the line 10 is guided through a chamber 20, the volume of which can be reduced by moving a membrane or wall 22 by means of compressed air supplied by the starting air pump 18 via a line 24.
  • valve 28 In the chamber 20 there is a valve 28 to be opened by the fuel flowing from the fuel tank 12 against the pressure of a spring 26.
  • the valve 28 is articulated on an arm 30 of an actuator 32 in the form of a two-armed lever, on the other lever arm 34 the Spring 26 attacks.
  • a shoulder 36 abuts the free end of the lever arm 34 on the wall 22 when the membrane 22 has been displaced to a certain extent.
  • the starting air pump 18 feeds a blowing nozzle 40 via a first check valve 38, which is directed into the intake pipe 42 of the combustion chamber 2. Upstream of the nozzle 4 there is a second check valve 44 in the inlet of the intake pipe 42, which can be opened by the air stream emerging from the blow nozzle 40 and also opens during each intake phase of the oscillating burner.
  • the start air pump 18 is connected via a line 46 to the fuel tank 12 above the level 14 of the fuel contained in it.
  • the wall 22 is first displaced by the starting air pump 18, so that fuel is injected into the intake pipe 42 through the opening check valve by means of the nozzle 4 in accordance with this displacement. After a certain displacement, the shoulder 36 abuts the lever arm 34, whereby the valve 28 is opened. The further delivery of fuel to the nozzle 4 then takes place (when starting) by the hydrostatic pressure of the fuel in the fuel tank 12 and the (further) displacement of the membrane 22.
  • the pressure of the spring 26 on the lever arm 34 is to be set so low that the flow of the fuel drawn in by the combustion chamber 2 in the intake phase is not interrupted when the burner is running.
  • the fuel drawn in should therefore always keep valve 28 open due to its fluid force.
  • the line 46 is beneficial, but can be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lasers (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Evaporation-Type Combustion Burners (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)

Abstract

1. Pulsatory burner having a combustion chamber (2) to which there leads, for the periodic intake of liquid fuel, a nozzle (4) arranged in a suction pipe (42) and connected by way of a conduit (10) containing a non-return valve (8) with a fuel ves-el (12), and having a starting air pump (18) by means of which, for starting, an air current can be generated which sweeps over the nozzle (4) and is directed to the combustion chamber (2), characterised in that the conduit (10) is conducted through a chamber (20) the volume of which can be reduced by displacement of a wall (22) by means of compressed air delivered by the starting air pump (18), in that in the conduit (10) between the chamber (20) and the fuel vessel (12) there is situated a valve (28) which can be opened against spring pressure (26) by the fuel flowing out of the fuel vessel (12) and in that the valve (28) comprises a setting member (32) upon which the displaceable wall (22) acts, after a pre-determined displacement distance, for the opening of the valve (28).

Description

Die Erfindung betrifft einen Schwingbrenner nach dem Oberbegriff des Anspruchs 1.The invention relates to an oscillating burner according to the preamble of claim 1.

Bei einem nach der DE-OS 1782940 bekannten Schwingbrenner dieser Art ist das Kraftstoff-Luft-Mengenverhältnis, das beim Starten in die Brennkammer gelangt, von der Art der Betätigung der Startluftpumpe abhängig. Ausserdem ist dieses Mengenverhältnis abhängig vom Pegel des Kraftstoffs im Kraftstoffbehälter. Gleiches gilt für einen nach der FR-PS 1374195 bekannten Schwingbrenner.In a vibrating burner of this type known from DE-OS 1782940, the fuel / air ratio which enters the combustion chamber when starting is dependent on the type of actuation of the starting air pump. In addition, this ratio is dependent on the level of the fuel in the fuel tank. The same applies to an oscillating burner known from FR-PS 1374195.

Aufgabe der Erfindung ist es, das Kraftstoff-Luft-Mengenverhältnis beim Starten unabhängig von der Art der Betätigung der Startluftpumpe und vom Peggelstand im Kraftstoffbehälter zu machen.The object of the invention is to make the fuel-air ratio when starting independent of the type of actuation of the starting air pump and the level in the fuel tank.

Die Lösung dieser Aufgabe ist im Kennzeichen des Anspruchs 1 angegeben. Die Kraftstoffmenge, die durch die Düse in die Brennkammer gelangt, ist bei Anwendung der Erfindung vom Mass des Verschiebens der Wand und dieses Mass wiederum von der Menge der Druckluft abhängig, die von der Startluftpumpe geliefert wird. Dadurch wird eine Vergleichmässigung des Kraftstoff-Luft-Mengenverhältnisses beim Starten erreicht. Auch beim Laufen des Brenners ist die jeweils zugeführte Kraftstoffmenge weitgehend unabhängig vom Kraftstoffpegel im Kraftstoffbehälter. Das Öffnen des Ventils kann in der letzten Phase des Startens erfolgen, was ebenfalls der Vergleichmässigung des genannten Mengenverhältnisses beim Starten dienlich ist.The solution to this problem is specified in the characterizing part of claim 1. The amount of fuel that enters the combustion chamber through the nozzle is, when using the invention, dependent on the amount of displacement of the wall and this amount in turn depends on the amount of compressed air supplied by the starting air pump. As a result, the fuel-air ratio is evened out when starting. Even when the burner is running, the amount of fuel supplied is largely independent of the fuel level in the fuel tank. The valve can be opened in the last phase of starting, which is also useful for making the above-mentioned quantitative ratio more uniform when starting.

Um die Startluftpumpe von der Brennkammer beim Lauf des Schwingbrenners zu entkoppeln, ist bevorzugt eine Ausbildung gemäss Anspruch 2 vorgesehen.In order to decouple the starting air pump from the combustion chamber when the oscillating burner is running, an embodiment according to claim 2 is preferably provided.

WiederumzurVergleichmässigung des genannten Mengenverhältnisses beim Starten dient die Massnahme nach Anspruch 3.Again, the measure according to claim 3 is used to even out the quantity ratio mentioned when starting.

Die Erfindung wird im folgenden an einem Ausführungsbeispiel unter Hinweis auf die beigefügte Zeichnung erläutert.The invention is explained below using an exemplary embodiment with reference to the accompanying drawings.

Der Schwingbrenner nach dem Ausführungsbeispiel weist eine Brennkammer 2 auf, zu der zum periodischen Ansaugen von flüssigem Kraftstoff eine Düse 4 führt. Der Austrittsquerschnitt dieser Düse 4 ist mittels einer Stellschraube 6 einzustellen. Die Düse 4 ist über eine ein Rückschlagventil 8 enthaltende Leitung 10 mit einem Kraftstoffbehälter 12 verbunden, der bis zum Pegel 14 mit fl üssigem Kraftstoff gefüllt sein mag. Mittels einer von Hand in Pfeilrichtung 16 zu betätigenden Startluftpumpe 18 wird zum Starten ein die Düse 4 überstreichender, zur Brennkammer 2 gerichteter Luftstrom erzeugt. Die Leitung 10 ist durch eine Kammer 20 geführt, deren Volumen durch Verschieben einer Membran oder Wand 22 mittels von der Startluftpumpe 18 über eine Leitung 24 zugeführter Druckluft zu verkleinern ist.The oscillating burner according to the exemplary embodiment has a combustion chamber 2, to which a nozzle 4 leads for the periodic intake of liquid fuel. The outlet cross section of this nozzle 4 can be adjusted by means of an adjusting screw 6. The nozzle 4 is connected via a line 10 containing a check valve 8 to a fuel tank 12 which may be filled to the level 14 with liquid fuel. A start-up air pump 18, which can be actuated by hand in the direction of the arrow 16, generates an air stream which sweeps over the nozzle 4 and is directed toward the combustion chamber 2. The line 10 is guided through a chamber 20, the volume of which can be reduced by moving a membrane or wall 22 by means of compressed air supplied by the starting air pump 18 via a line 24.

In der Kammer 20 befindet sich ein vom dem aus dem Kraftstoffbehälter 12 fliessenden Kraftstoff gegen den Druck einer Feder 26 zu öffnendes Ventil 28. Das Ventil 28 ist an einem Arm 30 eines Stellgliedes 32 in Form eines zweiarmigen Hebels angelenkt, an dessen anderem Hebelarm 34 die Feder 26 angreift. An das freie Ende des Hebelarms 34 stösst ein Ansatz 36 an der Wand 22 an, wenn die Membran 22 um ein gewisses Mass verschoben worden ist.In the chamber 20 there is a valve 28 to be opened by the fuel flowing from the fuel tank 12 against the pressure of a spring 26. The valve 28 is articulated on an arm 30 of an actuator 32 in the form of a two-armed lever, on the other lever arm 34 the Spring 26 attacks. A shoulder 36 abuts the free end of the lever arm 34 on the wall 22 when the membrane 22 has been displaced to a certain extent.

Die Startluftpumpe 18 speist über ein erstes Rückschlagventil 38 eine Blasdüse 40, die in das Ansaugrohr 42 der Brennkammer 2 gerichtet ist. Stromaufwärts der Düse 4 befindet sich im Einlass des Ansaugrohrs 42 ein zweites Rückschlagventil 44, das von dem aus der Blasdüse 40 austretenden Luftstrom zu öffnen ist und sich ausserdem bei jeder Ansaugphase des Schwingbrenners öffnet.The starting air pump 18 feeds a blowing nozzle 40 via a first check valve 38, which is directed into the intake pipe 42 of the combustion chamber 2. Upstream of the nozzle 4 there is a second check valve 44 in the inlet of the intake pipe 42, which can be opened by the air stream emerging from the blow nozzle 40 and also opens during each intake phase of the oscillating burner.

Die Startluftpumpe 18 ist über eine Leitung 46 mit dem Kraftstoffbehälter 12 oberhalb des Pegels 14 des in ihm enthaltenen Kraftstoffs verbunden.The start air pump 18 is connected via a line 46 to the fuel tank 12 above the level 14 of the fuel contained in it.

Beim Starten des Schwingbrenners wird durch die Startluftpumpe 18 erst die Wand 22 verschoben, so dass Kraftstoff nach Massgabe dieser Verschiebung durch das sich öffnende Rückschlagventil mittels der Düse 4 in das Ansaugrohr 42 eingespritzt wird. Nach einem gewissen Verschiebeweg stösst der Ansatz 36 an den Hebelarm 34, wodurch das Ventil 28 geöffnet wird. Die weitere Förderung von Kraftstoff zur Düse 4 erfolgt dann (beim Starten) durch den hydrostatischen Druck des Kraftstoffs im Kraftstoffbehälter 12 und die (weitere) Verschiebung der Membran 22.When the oscillating burner is started, the wall 22 is first displaced by the starting air pump 18, so that fuel is injected into the intake pipe 42 through the opening check valve by means of the nozzle 4 in accordance with this displacement. After a certain displacement, the shoulder 36 abuts the lever arm 34, whereby the valve 28 is opened. The further delivery of fuel to the nozzle 4 then takes place (when starting) by the hydrostatic pressure of the fuel in the fuel tank 12 and the (further) displacement of the membrane 22.

Der Druck der Feder 26 auf den Hebelarm 34 ist so gering einzustellen, dass beim Laufen des Brenners der Strom des von der Brennkammer 2 in der Ansaugphase angesaugten Kraftstoffs nicht unterbrochen wird. Der angesaugte Kraftstoff soll also das Ventil 28 durch seine Fliesskraft stets offen halten.The pressure of the spring 26 on the lever arm 34 is to be set so low that the flow of the fuel drawn in by the combustion chamber 2 in the intake phase is not interrupted when the burner is running. The fuel drawn in should therefore always keep valve 28 open due to its fluid force.

Die Leitung 46 ist zwar förderlich, kann aber entfallen.The line 46 is beneficial, but can be omitted.

Claims (3)

1. Pulsatory burner having a combustion chamber (2) to which there leads, for the periodic intake of liquid fuel, a nozzle (4) arranged in a suction pipe (42) and connected by way of a conduit (10) containing a non-return valve (8) with a fuel vessel (12), and having a starting air pump (18) by means of which, for starting, an air current can be generated which sweeps over the nozzle (4) and is directed to the combustion chamber (2), characterised in that the conduit (10) is conducted through a chamber (20) the volume of which can be reduced by displacement of a wall (22) by means of compressed air delivered by the starting air pump (18), in that in the conduit (10) between the chamber (20) and the fuel vessel (12) there is situated a valve (28) which can be opened against spring pressure (26) by the fuel flowing out of the fuel vessel (12) and in that the valve (28) comprises a setting member (32) upon which the displaceable wall (22) acts, after a pre-determined displacement distance, for the opening of the valve (28).
2. Pulsatory burner according to Claim 1, characterised in that the starting air pump (18), by way of a first non-return valve (38), feeds a blower nozzle (40) which is directed into the suction pipe (42), and in that a second non-return valve (44) is situated in the suction pipe (42) upstream of the nozzle (4).
3. Pulsatory burner according to Claim 1 or 2, characterised in that the starting air pump (18) is connected by way of a conduit (46) with the fuel vessel (12), above the level (14) of the fuel contained in it.
EP83102666A 1982-04-21 1983-03-17 Oscillating column burner Expired EP0092057B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83102666T ATE17031T1 (en) 1982-04-21 1983-03-17 SWING BURNER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3214932 1982-04-21
DE19823214932 DE3214932A1 (en) 1982-04-21 1982-04-21 VIBRATION BURNER

Publications (3)

Publication Number Publication Date
EP0092057A2 EP0092057A2 (en) 1983-10-26
EP0092057A3 EP0092057A3 (en) 1984-05-09
EP0092057B1 true EP0092057B1 (en) 1985-12-18

Family

ID=6161600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102666A Expired EP0092057B1 (en) 1982-04-21 1983-03-17 Oscillating column burner

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EP (1) EP0092057B1 (en)
AT (1) ATE17031T1 (en)
DE (2) DE3214932A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19517530A1 (en) * 1995-05-12 1996-11-14 Petersen Hugo Verfahrenstech Ignition device for a gasification reactor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899287A (en) * 1959-08-11 Gas producer with
FR1049151A (en) * 1952-01-15 1953-12-28 Lucas Ltd Joseph Device for adjusting the fuel supply of internal combustion engines
US3151454A (en) * 1961-04-24 1964-10-06 Curtis Dyna Prod Corp Starting and fuel system for pulse jet devices
FR1374195A (en) * 1963-11-14 1964-10-02 Junkers & Co Ignition device of a pulsating combustion burner installation
DE1782940B2 (en) * 1968-03-20 1978-03-30 Karl-Heinz Dr. 7773 Nussdorf Stahl Swinging burner fogger or swinging burner heater

Also Published As

Publication number Publication date
DE3214932A1 (en) 1983-10-27
DE3361528D1 (en) 1986-01-30
EP0092057A2 (en) 1983-10-26
EP0092057A3 (en) 1984-05-09
ATE17031T1 (en) 1986-01-15

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