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EP0097315B1 - Dispositif de brûleur à fuel pour fourneaux roulants - Google Patents

Dispositif de brûleur à fuel pour fourneaux roulants Download PDF

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Publication number
EP0097315B1
EP0097315B1 EP83105830A EP83105830A EP0097315B1 EP 0097315 B1 EP0097315 B1 EP 0097315B1 EP 83105830 A EP83105830 A EP 83105830A EP 83105830 A EP83105830 A EP 83105830A EP 0097315 B1 EP0097315 B1 EP 0097315B1
Authority
EP
European Patent Office
Prior art keywords
fuel
supply line
burner
vaporiser
air
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
EP83105830A
Other languages
German (de)
English (en)
Other versions
EP0097315A2 (fr
EP0097315A3 (en
Inventor
Werner Ing. Grad. Abel
Franz Dipl.-Ing. Schweiger
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.)
Progress Werk Oberkirch AG
Original Assignee
Progress Werk Oberkirch AG
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
Priority claimed from DE3223108A external-priority patent/DE3223108C2/de
Priority claimed from DE3238722A external-priority patent/DE3238722C2/de
Application filed by Progress Werk Oberkirch AG filed Critical Progress Werk Oberkirch AG
Priority to AT83105830T priority Critical patent/ATE26013T1/de
Publication of EP0097315A2 publication Critical patent/EP0097315A2/fr
Publication of EP0097315A3 publication Critical patent/EP0097315A3/de
Application granted granted Critical
Publication of EP0097315B1 publication Critical patent/EP0097315B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F23K5/147—Valves
    • 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
    • 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
    • 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
    • F23D11/42—Starting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C5/00—Stoves or ranges for liquid fuels
    • F24C5/02—Stoves or ranges for liquid fuels with evaporation burners, e.g. dish type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C5/00—Stoves or ranges for liquid fuels
    • F24C5/20—Stoves or ranges for liquid fuels with special adaptation for travelling, e.g. collapsible

Definitions

  • the invention relates to an oil burner arrangement for field cookers with a fuel container, with a fuel supply supplying the fuel to a main burner and with an evaporator arranged in the fuel supply and heated by the main burner, with a spray nozzle introducing the oil in the form of an oil mist at the inlet end of the evaporator is arranged.
  • a burner arrangement for petroleum with an evaporator and a starter mixing nozzle which heats it up at the start of operation is also known (FR-A-745 687).
  • FR-A-745 687 A burner arrangement for petroleum with an evaporator and a starter mixing nozzle which heats it up at the start of operation.
  • this known burner however, at least when using diesel oil as fuel, residue-free combustion and therefore a high combustion efficiency cannot be achieved, which can only be achieved if a spray nozzle which introduces the diesel oil in the form of an oil mist is arranged at the inlet end of the evaporator.
  • the starter mixing nozzle provided in the known burner does not achieve an optimal mixture of fuel and air and therefore no residue-free combustion, which is why the performance of the known starter mixing nozzle is not optimal.
  • the ignition of the fuel mixture emerging from the starter mixing nozzle is difficult.
  • the invention has for its object to provide an oil burner arrangement of the type mentioned in such a way that the evaporator can be heated to a temperature above 360 ° C. in a short time with a stable, powerful flame.
  • the evaporator is assigned a starter mixing nozzle which heats it up at the start of operation, which has a burner nozzle, a fuel chamber arranged in front of the inlet to the burner nozzle, an air nozzle arranged centrally to the burner nozzle and opening into the fuel chamber, and a perforated hole surrounding the burner nozzle Includes burner tube.
  • the arrangement of a fuel chamber and an air nozzle which is located centrally to the burner nozzle and opens into this fuel chamber produces an air jet which penetrates the fuel chamber when air is supplied and which carries the fuel with it in the form of a mist through the burner nozzle.
  • This fuel mist which is supplied with additional combustion air in the burner tube surrounding the burner nozzle through the air holes it contains, leads to a stable and powerful flame, which can also heat the upstream special evaporator to a temperature of over 360 ° C within a short time.
  • This fuel mist can also be easily ignited with a match, a lighter, a fuse or the like.
  • the fuel supply to the starter mixing nozzle is expediently designed as a capillary tube with an inner diameter of 0.6 to 0.8 mm and with a length adapted to the form and the volume flow of the fuel.
  • This capillary tube acts on the one hand as an attenuator and on the other hand as a flow limiter.
  • the evaporator is expediently provided with a double jacket forming a jacket cavity surrounding the evaporator chamber, with a heating tube, which is connected to this and which can be acted upon by the flame of the main burner and which is filled with an evaporable liquid, is arranged at the lowest point of the jacket cavity .
  • the distributor control valve according to the invention achieves an efficient oil burner arrangement for field cookers which can be put into operation easily.
  • Water is expediently used as the vaporizable liquid.
  • the evaporator can be arranged so that the condensing liquid runs back into the heating tube.
  • the jacket cavity is also useful evacuated.
  • the combustion chamber of a field cooker is designated 1.
  • 5 is a main burner
  • 6 is a venturi tube which is penetrated by the flame of the main burner.
  • the evaporator 2 which is heated by the flame of the main burner nozzle during operation.
  • Fuel is supplied to the evaporator 2 from a fuel tank 14 via a fuel line 16, a central distributor control valve 8 and a further fuel line 20. This fuel is evaporated in the evaporator 2, and this fuel vapor is supplied to the main burner 5.
  • 10 is an air tank with a pressure limiter 11 with a pressure indicator.
  • 12 is a pressure reducing valve with pressure indicator for the fuel tank. The fuel is conveyed from the fuel tank 14 into the evaporator 2 or into the starter mixing nozzle by this compressed air.
  • 13 is a pressure reducing valve with a pressure indicator for the starter mixing nozzle 7, which fuel is supplied via the fuel lines 16 and 19 and via the central distributor control valve 8 and air via the lines 17 and 18 and also via the distributor control valve 8.
  • Fig. 2 shows a special design of the evaporator 2, which is provided here with a double jacket, which surrounds the actual evaporator chamber 2a and forms a jacket cavity 2b, at the lowest point of which a heating pipe 2c is connected, which is connected to an evaporable liquid 2d, e.g. Water is filled.
  • the heating tube 2c is guided into the area of the heating flame of the main burner 5. Its cavity forms a closed system with the jacket cavity 2b of the evaporator.
  • the water 2d evaporates, the temperature in the system is uniform at constant pressure.
  • the heat transport is very intensive - as long as there is still liquid in the heating tube 2c - because the high heat of condensation is given off to the colder parts of the system when the steam condenses.
  • the system must be designed in such a way that the condensate that forms can flow back down into the heating pipe 2c.
  • the heat transfer stops i.e. the system is balanced and there are neither overheated nor too cold spots in the evaporator. If the heating pipe 2c is heated even further, it does get a higher temperature, but the evaporator does not, because heat is no longer transported.
  • the system must be designed so that the temperature of approx. 400 ° C is reached with a minimum output. This largely eliminates the dreaded cracking of diesel oil or kerosene.
  • Fig. 3 shows the starter mixing nozzle on a larger scale.
  • 30 is a burner body with an air connection 35 for the air line 18, from which an air supply 33 leads to an air nozzle 34.
  • 36 is a fuel connection for the fuel line 19. This fuel connection 36 is connected via a fuel supply bore 37 to a fuel chamber 38 which is directly adjacent to a burner nozzle 39a in a nozzle nut 39.
  • the air nozzle 34 borders the burner nozzle 39a opposite the fuel chamber.
  • This fuel mist to which additional combustion air is fed through the air holes 32 in the burner tube 31, can easily be ignited with the aid of a match, a lighter, a fuse or the like.
  • the flame produced is stable and powerful enough to heat the evaporator 2 to a temperature of over 360 ° C. in a relatively short time (3-4 minutes).
  • the valve consists of a fixed base 22 with bores and control slots, a rotatable control disc 23 with a shaft 23a to which an operating lever 9 is attached, an upper part 24 and a spring 25 which urges the rotatable disc 23 against the base 22.
  • Drilled holes and corresponding control channels In the top of the base 22 and the bottom of the rotatable control disc 23 are Drilled holes and corresponding control channels.
  • the opposite sides of the control disk 23 and base 22 are face-lapped so that the individual bores and control channels are sealed off from one another.
  • the bores or control slots in the base 22 are shown with solid lines, while the bores and control slots in the rotatable control disk 23 are shown in dashed lines.
  • fuel is via the control channel 27 defined in its width and milled in the rotatable control disk 23 - shown in dashed lines - in position I bore 28 for the starter mixing nozzle 7, in the positions 11 and 111 until shortly before the position IV in the control channel 29, which is incorporated in the base 22, passed via the fuel line 20 into the evaporator 2.
  • control channel 27 connects the air inlet bore 30 with the control channel 29 and the fuel inlet bore 26.
  • the second control channel 31 milled in the rotatable control disk 23 connects the air inlet bore 30 with the air outlet bore 32 and releases air for the starter mixing nozzle 7.
  • the control channel connects the air inlet bore 30 with the air outlet bore 32 and with the bore 28 and thus conveys air and the fuel still in the line 19 into the starter mixing nozzle 7.
  • the control channel 31 has no more influence.
  • valve 8 is turned to position 11.
  • the air lines 17 and 18 remain connected to one another, i.e. air is still applied to the starter mixing nozzle 7.
  • the air line 17 is connected to the fuel line 19 at the same time, so that the starter mixing nozzle is supplied with fuel (approx. 20 seconds) until the fuel line and starter mixing nozzle are blown empty and cleaned of fuel residues.
  • the fuel lines 16 and 20 are also connected to one another, so that fuel immediately enters the preheated evaporator at the time of switching and evaporates there.
  • the fuel vapor reaches the main burner 5 directly via the steam line 21.
  • the fuel steam jet emerging from this main nozzle conveys the necessary combustion air via the venturi tube 6, mixes with it and ignites on the still burning flame of the starter mixing nozzle .
  • the evaporator in position 11 is not supplied with maximum power because the combustion chamber would be overloaded at the time of a full main flame, which would result in a brief formation of soot and smoke.
  • the switch is made to position c. In this position, only the fuel lines 16 and 20 are connected to one another, i.e. only the evaporator 2 is supplied with fuel.
  • the central distributor control valve 8 allows the maximum amount of fuel to pass in this position, i.e. the burner runs at full load in this position. In this phase the food is heated up.
  • the central distributor control valve 8 is designed in such a way that the position of the burner can be regulated continuously from position c "full load” to shortly before position b "minimum load". Only the fuel lines 16 and 20 are connected to one another over the entire control range.
  • the fuel line 20 (FIG. 1) is designed as a capillary tube with an inner diameter of 0.6-0.8 mm, preferably 0.8 mm, the length of the capillary tube 30 being adapted to the fuel pressure and the required volume flow of the fuel .
  • a capillary tube is shown in Fig. 2.
  • the inlet end is designated with 31 and the outlet end with 32.
  • it is expediently provided with a loop-shaped turn 33.
  • the fuel feed line 21 (FIG. 1) to the starter mixing nozzle can also be designed as a capillary tube with an inner diameter of 0.6-0.8 mm, preferably 0.8 mm, the length of the Capillary tube is adapted to the fuel pressure and the desired volume flow of the fuel.

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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)

Claims (8)

1. Dispositif de brûleur à fuel pour fourneaux de campagne, comportant un réservoir de combustible (14), une alimentation en combustible (16, 20, 21) qui dirige le combustible vers un brûleur principal (5) et un évaporateur (2) disposé dans l'alimentation en combustible et chauffable par le brûleur principal, un pulvérisateur qui introduit le fuel sous la forme d'un brouillard de fuel étant disposé à l'extrémité d'admission de l'évaporateur, caractérisé en ce qu'il est associé, à l'évaporateur (2), une buse mélangeuse de démarrage (7) qui le chauffe en début de service et qui comprend une buse de brûleur (39a), une chambre de combustible (38) disposée en amont de l'admission de la buse de brûleur, une buse d'air (34) disposée en position centrale par rapport à la buse de brûleur et débouchant dans la chambre de combustible, et un tube de brûleur perforé (31) qui entoure la buse de brûleur.
2. Dispositif de brûleur à fuel selon la revendication 1, caractérisé en ce que la conduite d'alimentation en combustible (19) de la buse mélangeuse de démarrage (7) est réalisée sous la forme de tube capillaire ayant un diamètre intérieur de 0,6 à 0,8 mm et une longueur adaptée à la pression d'alimentation et au débit volumique du combustible.
3. Dispositif de brûleur à fuel selon la revendication 1, caractérisé en ce qu'il est prévu une soupape centrale d'aiguillage et de réglage (9) qui commande la conduite d'alimentation en air (18) et la conduite d'alimentation en combustible (19) de la buse mélangeuse de démarrage (7).
4. Dispositif de brûleur à fuel selon la revendication 3, caractérisé en ce que la soupape centrale d'aiguillage et de réglage (9) présente les positions de commutation suivantes:
a) une position de commutation qui relie la conduite d'alimentation en air (18) de la buse mélangeuse de démarrage (7) à une source d'air comprimé (10, 17) et la conduite d'alimentation en combustible (19) de la buse mélangeuse de démarrage (7) à la conduite de combustible principale (16);
b) une position de commutation qui relie la conduite d'alimentation en air (18) et la conduite d'alimentation en combustible (19) de la buse mélangeuse de démarrage (7) à la source d'air comprimé (10, 17), ainsi que la conduite d'alimentation en combustible (20) de l'évaporateur (2) à la conduite de combustible principale (16);
c) une position de commutation qui relie la conduite d'alimentation en combustible (20) de l'évaporateur (2) à la conduite de combustible principale (16) et dans laquelle la conduite d'alimentation en combustible (20) de l'évaporateur (2) peut être étranglée d'une valeur maximale à une valeur minimale;
d) une position de commutation qui relie les conduites d'alimentation en combustible (19, 20) de la buse mélangeuse de démarrage (7) et de l'évaporateur (2) à la source d'air comprimé (10, 17); et
e) une position de coupure.
5. Dispositif de brûleur à fuel selon la revendication 1, caractérisé en ce que l'évaporateur (2) est muni d'une double chemise qui forme une cavité d'enveloppe (2b) entourant la chambre de l'évaporateur (2a) et en ce qu'il est disposé, au point le plus bas de la cavité d'enveloppe, un tuyau de chauffage (2c) qui est en communication avec celle-ci et peut être touché par la flamme du brûleur principale (5) et qui est rempli d'un liquide évaporable (2d).
6. Dispositif de brûleur à fuel selon la revendication 5, caractérisé en ce que le liquide évaporable est l'eau.
7. Dispositif de brûleur à fuel selon la revendication 5, caractérisé en ce que l'évaporateur (2) est disposé dans une position inclinée telle que le liquide qui se condense revienne dans le tuyau de chauffage (2c).
8. Dispositif de brûleur à fuel selon la revendication 5, caractérisé en ce que la cavité d'enveloppe (2b) est mise sous vide.
EP83105830A 1982-06-21 1983-06-14 Dispositif de brûleur à fuel pour fourneaux roulants Expired EP0097315B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83105830T ATE26013T1 (de) 1982-06-21 1983-06-14 Oelbrenneranordnung fuer feldkochherde.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3223108 1982-06-21
DE3223108A DE3223108C2 (de) 1982-06-21 1982-06-21 Verdampfungsölbrenner
DE3238722A DE3238722C2 (de) 1982-10-19 1982-10-19 Verdampfungsölbrenner für Feldkochherde
DE3238722 1982-10-19

Publications (3)

Publication Number Publication Date
EP0097315A2 EP0097315A2 (fr) 1984-01-04
EP0097315A3 EP0097315A3 (en) 1984-05-16
EP0097315B1 true EP0097315B1 (fr) 1987-03-18

Family

ID=25802536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105830A Expired EP0097315B1 (fr) 1982-06-21 1983-06-14 Dispositif de brûleur à fuel pour fourneaux roulants

Country Status (2)

Country Link
EP (1) EP0097315B1 (fr)
SG (1) SG75288G (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927159C2 (de) * 1989-08-17 1994-06-09 Kaercher Gmbh & Co Alfred Druckverdampferbrenner, insbesondere für Feldkochherde
IT1266275B1 (it) * 1993-02-26 1996-12-27 Claudio Fonsati Valvola di regolazione della portata di gas.
DE10360009A1 (de) * 2003-12-19 2005-07-28 J. Eberspächer GmbH & Co. KG Brennstoffzuführleitungssystem bei einem Heizgerät, insbesondere Fahrzeugheizgerät
DE102006034479B4 (de) * 2006-07-26 2010-08-19 Holger Dr. Meyer Verfahren zur Verdampfung und Verbrennung von Flüssigbrennstoff

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB715578A (en) * 1951-08-09 1954-09-15 Heizmotoren Ges Mit Beschraenk Improvements in or relating to heating apparatus incorporating a reso-jet tube
DE3118644C2 (de) * 1981-05-11 1985-05-02 Progress-Werk Oberkirch Ag, 7602 Oberkirch Verdampfungsölbrenner für Feldkochherde

Also Published As

Publication number Publication date
SG75288G (en) 1991-01-04
EP0097315A2 (fr) 1984-01-04
EP0097315A3 (en) 1984-05-16

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