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EP0266377A1 - Appareil de chauffage avec dispositif a postcombustion. - Google Patents

Appareil de chauffage avec dispositif a postcombustion.

Info

Publication number
EP0266377A1
EP0266377A1 EP87902411A EP87902411A EP0266377A1 EP 0266377 A1 EP0266377 A1 EP 0266377A1 EP 87902411 A EP87902411 A EP 87902411A EP 87902411 A EP87902411 A EP 87902411A EP 0266377 A1 EP0266377 A1 EP 0266377A1
Authority
EP
European Patent Office
Prior art keywords
hollow cylinder
burner
heating device
openings
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.)
Granted
Application number
EP87902411A
Other languages
German (de)
English (en)
Other versions
EP0266377B2 (fr
EP0266377B1 (fr
Inventor
Ottomar Schneidawind
Wolfgang Schneidawind
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6299752&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0266377(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT87902411T priority Critical patent/ATE66526T1/de
Publication of EP0266377A1 publication Critical patent/EP0266377A1/fr
Application granted granted Critical
Publication of EP0266377B1 publication Critical patent/EP0266377B1/fr
Publication of EP0266377B2 publication Critical patent/EP0266377B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
    • 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 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • 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
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/404—Flame tubes

Definitions

  • the invention relates to a heating device with an after burner, in which there is a burner chamber with a burner arranged therein.
  • heating devices serve, for example, in the form of a boiler for heating and heating a heating medium which is fed into a heating circuit by gravity or a circulating pump and uses a system of radiators to heat it delivers.
  • the energy required for this is developed via a burner located in the burner chamber, which is fed with gas or oil via a feed line.
  • a distinction is made in the construction and function of various burner types, of which the atmospheric and the fan burner are the best known.
  • the atmospheric burner is characterized in that the air required for combustion is sucked in by the natural buoyancy and mixed and ignited with the heating medium flowing out of the burner.
  • a significantly better evaluation of the fuel can be achieved by a fan burner, in which the pre-combustion air is fed through a fan wheel to the nozzle atomizing the fuel, where the oil-air mixture is ignited with the aid of a spark generated by electrodes .
  • the primary goal of developing Heating boilers consist of converting the energy supplied in the form of the fuel to heat as completely as possible and without residues.
  • One of the proposals known from the prior art for this purpose is to direct the flame front flowing from the burner and interspersed with exhaust gases onto a plate acting as a mirror, thereby causing a reflection which leads to turbulence and thus to better mixing and consequently also leads to more complete combustion with a simultaneous lowering of the exhaust gas temperature.
  • a disadvantage is that it has to be worn out and replaced very quickly due to the high stresses, which is why this proposal has not become established in practice.
  • the invention has made the improvement and further development of the burners arranged in heating devices the task of making a substantially more complete combustion possible.
  • an afterburner in the form of a hollow cylinder is arranged at a distance from the burner and in the direction of flow of the exhaust gases and extends over the entire flow cross section and in that openings are made in the hollow cylinder . Due to the fact that the hollow cylinder extends over the entire flow cross-section, the flames and exhaust gases emanating from the burner are forced to pass through the hollow cylinder and are kept within the volume of the hollow cylinder and cannot differ as in the prior art spread throughout the burner chamber.
  • the gas flowing through has a higher speed and consequently forms a lower static pressure, which causes air to be sucked in from the outside through the openings in the hollow cylinder, which is swirled as it passes, which is better Mixing of the gas inside the cylinder results.
  • the cylinder heats up during operation and emits this heat partly to the air flowing in from the outside and to cooler parts of the medium flowing through. Both measures - both the supply of fresh air from the outside and the additional heating, which can go so far with a certain setting that large parts of the cylinder glow and thereby ignite fuel / air mixtures which have not yet burned - necessitate an essential lent better and more complete combustion of the fuel.
  • inward-facing lamellae are attached to the cylinder, which have the consequence that the effective and available flow cross-section is reduced in the areas defined thereby, the velocity of the gas located there is consequently increased and the speed is lower pressure is thereby increased.
  • the result is an increased intake of air and in addition the generation of turbulence.
  • the lamella can be assigned as a one-piece element to a larger number of openings or as an individual part in each case to a single opening.
  • the openings are located in a circle along the jacket of the cylinder, since then when the burner is set to be described in more detail later, the cylinder is glowed in an edge area through the through the Fresh air flowing in through openings cools the cylinder jacket and therefore, in the case of a circular arrangement, spreading of the annealing state of the cylinder over the entire length is prevented.
  • a forced draft burner which is characterized by a fan which provides the air to be burned in sufficient quantity to the combustion chamber and in which the resulting flame is in a tube - the so-called flame or combustion tube - Is guided, is proposed by the invention to attach the hollow cylinder in the region of the outlet of the flame tube and at a distance from it and / or to adjust the burner so that the hollow cylinder glows at least on the outlet-side edge - that is the area opposite the flame tube.
  • the supply of air immediately at the beginning of the hollow cylinder is made possible by the fact that it is arranged at a distance from the flame tube.
  • Air which is therefore preheated in the combustion chamber can then be sucked in, which on the one hand allows the fan output to be throttled and, on the other hand, preheating enables * significantly improved and more complete combustion.
  • Unused air or air-fuel mixture flowing out at the outlet of the afterburner then flows back outside the hollow cylinder into the interior and can be fed back to the combustion process.
  • the air flowing in through the distance from the outside has the effect that the fastening of the hollow cylinder to the flame tube is constantly cooled and prevents premature burning or scorching.
  • the additional feature of the hollow cylinder's exhaust-side glow ignites fuel / air mixtures which have not yet been consumed, which contributes significantly to complete combustion.
  • An essential advantage of the corresponding fan burner is that a largely complete combustion (blue combustion) is possible. It offers optimal energy utilization, therefore lower oil consumption, optimal exhaust gas values, a particularly high carbon dioxide content and, as a result, better efficiency.
  • the combustion itself is largely free of residues and soot. Practical testing has shown that the supply of preheated air can reduce the performance of the fan by approximately 30%.
  • the optimal result of the result that can be achieved by the afterburner according to the invention is not only achieved by using preheated air but also by the additional, marginally area of the hollow cylinder caused ignition.
  • a hollow cylinder made of metal which can be centered by means of radially attached screws.
  • the hollow cylinder is then on an outlet, on the flame tube or the like. pushed on the end and centered by actuating the screws, in the case of the fan burner at the same time a passage remains free between the hollow cylinder and the flame tube for supplying combustion air.
  • the embodiment according to claim 9 causes a longer residence time of the outflowing flue gases in the burner chamber and thus an improved one
  • the burner chamber by definition consists of an oil pan, a burner pot and one or more burner rings
  • the oil entering the oil pan is ignited and the flames escape vertically via the burner rings.
  • the afterburner is fastened in the form of a hollow cylinder provided with openings via radially extending pins on the burner ring in such a way that the hollow cylinder extends predominantly upwards beyond the burner ring.
  • the lower edge of the hollow cylinder lies in the area of the burner ring. The better swirling and the suction of the air from the outside have been described.
  • a distance between the hollow cylinder and the burner ring is recommended, which on the one hand should not be chosen too small, since then there is only a slight effect and, on the other hand, may not be chosen too large, so that no significant proportion of the combustion mixture can flow past the afterburner .
  • the afterburner prevents the outgoing combustion mixture from diverging. is instead forced to a high speed, therefore forms a negative pressure and draws in air from outside.
  • the hollow cylinder 2 itself has openings 7 somewhat to the right of the center, which are arranged along a circle running in a section of the cylinder.
  • Each of these openings 7 is assigned a lamella 8 which is fastened to the hollow cylinder 2 from the inside and is therefore only shown in dashed lines. They ensure that a vacuum is created in the area of the openings 7, which the air from the outside sucked in in the direction of the arrows 9 and the mixture additionally swirled. Both measures help improve combustion.
  • the parts just described here are located in the combustion chamber 10 of the boiler, so that the air drawn in according to the arrows 6, 9 is preheated, which requires a lower fan power and is conducive to optimal combustion. This sucked-in air partly comes from the unburned gases flowing out at the outlet 11 of the hollow cylinder 2, which do not immediately flow away due to their comparatively low temperature.
  • the air recirculated outside the hollow cylinder 2 can of course also contain unburned fuel residues, which are then heated again and fed to the combustion taking place inside the flame tube 1 and the hollow cylinder 2.
  • a fan burner according to the invention which has a high degree of completeness of the combustion and therefore brings optimum energy utilization, that is to say a high degree of efficiency, favorable exhaust gas values, in particular a high carbon dioxide content and extensive freedom from soot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Gas Burners (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Incineration Of Waste (AREA)

Abstract

Afin de parvenir à une combustion aussi complète que possible, un cylindre creux (2) est agencé dans un appareil de chauffage à distance du brûleur et dans le sens d'écoulement des gaz brûlés. Ledit cylindre s'étend sur la totalité de la section d'écoulement et comporte des ouvertures (7). En particulier, le cylindre creux (2) est monté dans la région de la sortie du tube-foyer (1) et à distance de celui-ci, et/ou le brûleur est réglé de manière que le cylindre creux (2) soit incandescent sur le bord du côté de la sortie.
EP87902411A 1986-04-29 1987-04-29 Appareil de chauffage avec dispositif a postcombustion Expired - Lifetime EP0266377B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87902411T ATE66526T1 (de) 1986-04-29 1987-04-29 Heizungsgeraet mit nachbrenner.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19863614440 DE3614440A1 (de) 1986-04-29 1986-04-29 Heizungsgeraet mit nachbrenner
DE3614440 1986-04-29
PCT/DE1987/000189 WO1987006681A1 (fr) 1986-04-29 1987-04-29 Appareil de chauffage avec dispositif a postcombustion

Publications (3)

Publication Number Publication Date
EP0266377A1 true EP0266377A1 (fr) 1988-05-11
EP0266377B1 EP0266377B1 (fr) 1991-08-21
EP0266377B2 EP0266377B2 (fr) 1994-05-04

Family

ID=6299752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87902411A Expired - Lifetime EP0266377B2 (fr) 1986-04-29 1987-04-29 Appareil de chauffage avec dispositif a postcombustion

Country Status (4)

Country Link
EP (1) EP0266377B2 (fr)
AT (1) ATE66526T1 (fr)
DE (3) DE3614440A1 (fr)
WO (1) WO1987006681A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534319A1 (de) * 1995-09-15 1997-03-20 Hoechst Ceram Tec Ag Einsatz für eine Kesselanlage, Kesselanlage und Verfahren zum Betreiben der Kesselanlage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835158A1 (de) * 1988-10-12 1990-04-19 Vaillant Joh Gmbh & Co Einrichtung zur verwertung der abgase brennerbeheizter geraete
DE19732607A1 (de) 1997-07-29 1999-02-04 Schneidawind Melitta Nachbrenner für ein Heizungsgerät
CN107461737B (zh) * 2017-08-10 2019-02-22 北京一亚高科能源科技有限公司 一种非均压风室

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1603032A (en) * 1924-11-19 1926-10-12 Hauck Mfg Co Burner apparatus for liquid fuels
DE1895703U (de) * 1958-08-16 1964-07-02 Willi Broedlin Brenner fuer fluessige kohlenwasserstoffe, insbesondere fuer heizoel.
FR1532452A (fr) * 1967-05-26 1968-07-05 Airflam Le Chauffage Domestiqu Perfectionnement aux pots de combustion des poêles à mazout et appareils de chauffage analogues
DE2059693A1 (de) * 1970-12-04 1972-06-15 Werner Pieper Brenner fuer fluessige Brennstoffe
DE2442170A1 (de) * 1974-09-03 1976-03-11 Interliz Anstalt Einrichtung zur verbesserung des ausbrandes der flamme von geblaese-oelbrennern bei heizkesseln oder dergleichen
DE7429675U (de) * 1974-09-03 1976-04-01 Interliz Anstalt, Vaduz Einrichtung zur verbesserung des ausbrandes der flamme von gebläse-olbrennern bei heizkesseln oder dergleichen
US4174941A (en) * 1977-12-06 1979-11-20 The National Drying Machinery Corp. of America Sleeve and damper for oil burner
DE2820297A1 (de) 1978-05-10 1979-11-15 Werner Mueller Geblaesebrenner und zusatzbrennerrohr fuer einen geblaesebrenner
DE2918416C2 (de) * 1979-05-08 1985-05-15 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Vergasungsölbrenner
DE3048044C2 (de) * 1980-12-19 1983-06-09 Helmut Dipl.-Chem. 8000 München Ulrich Flammrohr aus hitzebeständigem Werkstoff für Brenner, insbesondere Ölbrenner
DE8422852U1 (de) * 1984-08-01 1985-12-05 Reichstein, Manfred, 5600 Wuppertal Mischeinrichtung für Ölbrenner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8706681A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534319A1 (de) * 1995-09-15 1997-03-20 Hoechst Ceram Tec Ag Einsatz für eine Kesselanlage, Kesselanlage und Verfahren zum Betreiben der Kesselanlage

Also Published As

Publication number Publication date
ATE66526T1 (de) 1991-09-15
EP0266377B2 (fr) 1994-05-04
DE3772322D1 (de) 1991-09-26
DE8717809U1 (de) 1990-04-19
DE3614440A1 (de) 1987-11-05
WO1987006681A1 (fr) 1987-11-05
EP0266377B1 (fr) 1991-08-21

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