EP0233349B1 - Verbrennungsverfahren und Brenner für flüssige Brennstoffe - Google Patents

Verbrennungsverfahren und Brenner für flüssige Brennstoffe Download PDF

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Publication number
EP0233349B1
EP0233349B1 EP19860117396 EP86117396A EP0233349B1 EP 0233349 B1 EP0233349 B1 EP 0233349B1 EP 19860117396 EP19860117396 EP 19860117396 EP 86117396 A EP86117396 A EP 86117396A EP 0233349 B1 EP0233349 B1 EP 0233349B1
Authority
EP
European Patent Office
Prior art keywords
valve
pump
pressure
fuel
burner
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 - Lifetime
Application number
EP19860117396
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0233349A1 (de
Inventor
Elmar Goller
Heinrich Eickhoff
Albrecht Kayser
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.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
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 Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Publication of EP0233349A1 publication Critical patent/EP0233349A1/de
Application granted granted Critical
Publication of EP0233349B1 publication Critical patent/EP0233349B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F23K5/04—Feeding or distributing systems using pumps
    • 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

Definitions

  • the invention relates to a method of the type specified in the preamble of claim 1.
  • a method of the type specified in the preamble of claim 1 is known from CH-A-345 289.
  • the pump consists of a gear pump, one of whose gear has a slot which also forms the valve leading to the nozzle.
  • a pressure accumulator is connected between the pump and the valve. During each revolution of the gearwheel having the slot, the slot comes into connection with the nozzle, so that the pressure accumulator discharges and, in addition to the continuously conveyed fuel, the content of the pressure accumulator is expelled from the nozzle.
  • Such a burner is particularly suitable for intermittent operation in kilns, in particular ceramic ovens.
  • the pressure accumulator serves to adapt the continuously pumping pump to the intermittent operation of the nozzle, but has no influence on the ignition behavior.
  • DE-B-1 269 277 describes a burner in which a check valve is present between the pump and the pressure accumulator.
  • the pressure accumulator serves to compensate for fluctuations in consumption and ensures that the supply pressure is as uniform as possible. Here too the pressure accumulator has no effect on the ignition behavior.
  • a burner known from US-A-4 416 592 contains a valve which opens the fuel supply to the nozzle depending on the pump pressure.
  • a collecting container is connected to the cylinder chamber of the valve, which contains a float ball.
  • the float ball only closes an outlet of the collecting container leading back to the tank when the collecting container is completely filled. Only from this point on can pressure build up in the cylinder chamber. This also does not improve the ignition behavior of the burner.
  • the invention has for its object to provide a method of the type mentioned, which enables simple ignition even at high outflow speeds of the fuel from the nozzle.
  • the fuel delivered by the pump is directed into the pressure accumulator, which is thereby charged. If the valve is opened abruptly, the pressure accumulator discharges via the valve to the nozzle, so that the fuel / air mixture that emerges from the nozzle is briefly enriched. This mixture is easily ignitable.
  • the pressure accumulator connected to the fuel line has no effect.
  • the valve which is preferably a switching valve, remains open.
  • the invention further relates to a burner for carrying out the method with the features of claim 2.
  • the pump is a positive displacement pump which is bridged by a return line containing a pressure-dependent opening second valve.
  • the positive displacement pump e.g. B. a gear pump or a piston pump, delivers a fuel volume proportional to the pump speed to the fuel line.
  • a pressure builds up in front of this valve, through which the pressure accumulator is charged.
  • the first valve is open, the fuel is supplied to the nozzle in an amount that is dependent on the pump speed.
  • the return branch is provided, which is bridged by the second valve.
  • the pressure accumulator and the second valve can be designed as a common assembly, the second valve simultaneously taking over the function of the pressure accumulator.
  • the second valve has a spring-loaded piston which is movable in a cylinder and together with this forms the pressure accumulator, and that the cylinder has an opening which is connected to the pump inlet and which is connected to the pump outlet when the Pressure at the pump outlet pushes the piston back over the opening.
  • a fuel line 10 leads from a positive displacement pump 11 to the nozzle 12.
  • the nozzle 12 is surrounded by a jacket 13 which is connected to an air duct 14 is connected and has an outlet 15 in the vicinity of the nozzle opening.
  • the fuel emerging from the nozzle opening mixes with the air emerging from the outlet 15.
  • An electrode arrangement 16 is used to generate an arc for igniting the flame.
  • the fuel line 10 contains a valve 17 which is designed as a switching valve and can be opened by a controller 18 for a predetermined time.
  • the pressure accumulator 19 in the form of a gas pressure accumulator is connected to the fuel line 10 in the flow path upstream of the valve 17.
  • the gas pressure accumulator contains a gas volume 20, which is closed off from the fuel line 10 by a flexible and stretchable membrane 21 or a freely movable piston.
  • the return branch 22 leads from the pump outlet 11 to the pump inlet 11 a.
  • the return branch 22 contains a spring-loaded check valve 23 which only opens from the pump outlet 11 to the pump inlet 11a when the pressure at the pump outlet exceeds a predetermined threshold value.
  • the opening pressure of the check valve 23 is dimensioned such that the check valve opens when the pressure accumulator 19 has received its maximum amount of liquid. In this way, an overload of the fuel line 10, the pressure accumulator 19 and the valve 17 is avoided.
  • the valve 17 To ignite the flame, the valve 17 is closed so that the pump 11 conveys fuel from the supply line 24 to the fuel line 10 and the pressure accumulator is charged. After the pressure accumulator 19 is charged, the valve 17 is opened abruptly, so that the pressure accumulator 19 discharges into the fuel line 10 to the nozzle 12 and, in addition to the delivery volume of the pump 11, provides a further fuel volume for a short time. While the amount of air that is supplied to the inlet 14 of the jacket 13 remains constant, the amount of fuel increases temporarily, so that an enriched mixture flows into the combustion chamber, which can be easily ignited by the electrode arrangement 16.
  • the pressure accumulator 19 contains a spring 25, which presses a piston 26, which is arranged in the return branch 22 and can be moved in a cylinder 27, in the direction of the fuel line 10.
  • the cylinder 27 has a lateral opening 28 through which the piston 26 can be pushed away by the pressure of the fuel line 10, so that the return branch 22 is opened and the pump outlet 11 is connected to the pump inlet 11a.
  • the spring 25 presses the piston 26 against a stop 29. Since the piston 26 lies sealingly against the wall of the cylinder 27, no fuel can flow from the pump inlet 11a via the return branch 22 to the pump outlet 11b when the spring 25 is unloaded.
  • the pressure accumulator 19 therefore also assumes the function of the check valve 23 in FIG. 1.
  • the spring 25 is supported on the piston-like support member 30 which engages with a threaded bolt 31 in a thread in the end wall 32 of the cylinder 27.
  • the bias of the spring 25 can be changed.
  • the valve 17 is shut off.
  • the operation of the displacement pump 11 increases the pressure in the fuel line 10, as a result of which the pressure accumulator 19 is charged, ie. H. the piston 26 is pushed against the force of the spring 25 from the stop. If the pressure exceeds the threshold value predetermined by the axial position of the support member 30, then the return branch 22 is opened by retracting the piston 26 and the pump 11 delivers in a closed circuit.
  • the valve 17 is opened, the spring 25 pushes through the piston 26 the amount of liquid stored in the pressure accumulator through the fuel line 10 to the nozzle 12.
  • the amount of liquid to be taken up by the pressure accumulator 19 is limited by opening the return branch 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
EP19860117396 1986-01-11 1986-12-13 Verbrennungsverfahren und Brenner für flüssige Brennstoffe Expired - Lifetime EP0233349B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863600597 DE3600597A1 (de) 1986-01-11 1986-01-11 Brenner fuer fluessige brennstoffe
DE3600597 1986-01-11

Publications (2)

Publication Number Publication Date
EP0233349A1 EP0233349A1 (de) 1987-08-26
EP0233349B1 true EP0233349B1 (de) 1990-03-07

Family

ID=6291665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860117396 Expired - Lifetime EP0233349B1 (de) 1986-01-11 1986-12-13 Verbrennungsverfahren und Brenner für flüssige Brennstoffe

Country Status (2)

Country Link
EP (1) EP0233349B1 (enrdf_load_stackoverflow)
DE (1) DE3600597A1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800300C3 (de) * 1988-01-08 1998-04-30 Schaefer Stettiner Schrauben Ölzuführeinrichtung für einen Ölzerstäubungsbrenner
DE3814530C1 (enrdf_load_stackoverflow) * 1988-04-29 1989-11-16 Danfoss A/S, Nordborg, Dk
JP3055365B2 (ja) † 1993-06-30 2000-06-26 東洋インキ製造株式会社 ２，５−ジ（アリールアミノ）−３，６−ジヒドロテレフタル酸ジアルキルエステル類の製造法およびこれを中間体とするキナクリドン類の製造法
FR2697131B1 (fr) * 1993-08-02 1995-03-31 Bap Installation de protection de cultures gélives contre des abaissements de température ambiante.
DE19724502C1 (de) * 1997-06-11 1998-10-08 Webasto Thermosysteme Gmbh Heizgerät
DE102012110103A1 (de) * 2012-10-23 2014-04-24 Spheros Gmbh Mit flüssigem Brennstoff betriebene Heizeinrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1701191A (en) * 1927-05-25 1929-02-05 William R Ray Automatic oil feeding and starting valve
CH345289A (de) * 1956-11-24 1960-03-15 Leisenberg Manfred Brennstoff-Einspritzvorrichtung für Brennöfen
DE1401774A1 (de) * 1962-03-20 1968-10-10 Danfoss As Verfahren und Vorrichtung zum Entfernen der Fluessigkeit aus der hinter dem Absperrventil gelegenen Austrittsleitung einer Druckfluessigkeits-Foerderanlage
DE1269277B (de) * 1963-01-19 1968-05-30 Ludwig Bluecher Foerderaggregat fuer Heizoeldruckversorgungsanlagen
DE1551671A1 (de) * 1966-03-30 1970-03-19 Kurt Hastenteufel Leitungsanlage fuer OElheizungen mit Einstrang-OElzufuhr
GB1312961A (en) * 1970-01-13 1973-04-11 Shell Mex Bp Ltd Method and apparatus for burning liquefied petroleum gas
DE3103684C2 (de) * 1981-01-31 1986-08-07 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Ölbrenner
US4416592A (en) * 1981-04-15 1983-11-22 Sid Harvey, Inc. Liquid flow control apparatus

Also Published As

Publication number Publication date
EP0233349A1 (de) 1987-08-26
DE3600597C2 (enrdf_load_stackoverflow) 1988-11-24
DE3600597A1 (de) 1987-07-16

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