EP0266377B2 - Heating device with reheater - Google Patents
Heating device with reheater Download PDFInfo
- Publication number
- EP0266377B2 EP0266377B2 EP87902411A EP87902411A EP0266377B2 EP 0266377 B2 EP0266377 B2 EP 0266377B2 EP 87902411 A EP87902411 A EP 87902411A EP 87902411 A EP87902411 A EP 87902411A EP 0266377 B2 EP0266377 B2 EP 0266377B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow cylinder
- burner
- openings
- outlet
- reheater
- 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
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, e.g. burner cooling means, noise reduction means
- F23D11/40—Mixing tubes or chambers; Burner heads
- F23D11/404—Flame tubes
Definitions
- the invention relates to a heating device with afterburner according to the preamble of claim 1.
- Such a device is known from DE-OS 2820297, where it is proposed to arrange a so-called additional burner tube on the burner tube, which has nozzle-like passages distributed over the circumference and leading to the burner tube mouth, the task of which is to convey air to the mouth of the burner tube to improve combustion.
- the additional burner tube is attached to the burner tube in its mouth area.
- DE-OS 2442170 provides for the attachment of a hollow cylinder which coaxially surrounds the burner at a distance and which is adjusted so that it glows at its outlet end. This measure serves to evaporate fuel.
- the hollow cylinder is dimensioned and the burner is set such that the hollow cylinder glows from the outlet end to the openings and that a lamella fastened to the inside of the hollow cylinder is arranged between two openings.
- 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, as in the prior art, spread throughout the burner chamber .
- the gas flowing through has a higher speed in the area of the cross-sectional constriction and consequently forms a lower static pressure, which causes air to be sucked in from 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 glows at least on the outlet-side edge, as a result of which the fuel-air mixture which has not yet burned is ignited and consequently used.
- boilers according to the invention which have just been described are suitable for both gaseous and liquid, in particular oily, fuels.
- the result of the lamellae facing inwards on the openings and attached to the cylinder is that the effectively available flow cross section is reduced in the regions defined thereby, the velocity of the gas located there is consequently increased and the negative pressure is thereby increased.
- the result is an increased intake of air and in addition the generation of turbulence.
- the lamella can be assigned to a larger number of openings as a one-piece element or as a single part to a single opening.
- the openings are in a circle along the jacket of the cylinder.
- the burner is set so that the hollow cylinder glows up to the openings on the circle. This requirement is easy to meet, since comparatively cool air is sucked in from the outside through the openings and heat is therefore constantly removed from these areas of the hollow cylinder, so that spreading of the annealing process beyond the circle can be easily avoided and prevented by appropriate setting.
- the embodiment according to claim 2 causes a longer residence time of the outflowing flue gases in the burner chamber and thus an improved heat emission.
- it is fundamentally free whether the closed end of the respective cylinder is located on the inlet-side or on the outlet-side end of the hollow cylinder.
- a cylinder with its closed end face adjoins and surrounds the burner tube outside and coaxially with the hollow cylinder and in this way facilitates the return of air from the heated area on the outlet side back to the inlet between the burner tube and the hollow cylinder.
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)
- Incineration Of Waste (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Gas Burners (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
Die Erfindung betrifft ein Heizungsgerät mit Nachbrenner gemäß dem Oberbegriff des Anspruches 1.The invention relates to a heating device with afterburner according to the preamble of claim 1.
Eine derartige Vorrichtung ist aus der DE-OS 2820297 bekannt Dort wird vorgeschlagen, auf das Brennerrohr ein sog. Zusatzbrennerrohr anzuordnen, welches über den Umfang verteilt düsenartige und zur Brennerrohmündung führende Durchgänge aufweist, deren Aufgabe darin besteht, durch Fördern von Luft zur Mündung des Brennerrohres die Verbrennung zu verbessern. Das Zusatzbrennerrohr ist auf dem Brennerrohr in seinem Mündungsbereich befestigt. Eine derartige Vorrichtung erweist sich für die Praxis als ungeeignet, da aufgrund des Kontaktes ein erheblicher Wärmeübergang auf das Zusatzbrennerrohr stattfindet, der im Dauerbetrieb zu einem frühzeitigen Verschleiß führt. Zudem ist die Verbrennung nach wie vor unvollständig.Such a device is known from DE-OS 2820297, where it is proposed to arrange a so-called additional burner tube on the burner tube, which has nozzle-like passages distributed over the circumference and leading to the burner tube mouth, the task of which is to convey air to the mouth of the burner tube to improve combustion. The additional burner tube is attached to the burner tube in its mouth area. Such a device proves to be unsuitable in practice, since due to the contact there is a considerable heat transfer to the additional burner tube, which leads to premature wear in continuous operation. In addition, the combustion is still incomplete.
Die DE-OS 2442170 sieht die Anbringung eines Hohlzylinders vor, der den Brenner koaxial im Abstand umgibt und der so eingestellt wird, daß er an seinem auslaßseitigen Ende glüht. Diese Maßnahme dient dem Verdampfen von Brennstoff.DE-OS 2442170 provides for the attachment of a hollow cylinder which coaxially surrounds the burner at a distance and which is adjusted so that it glows at its outlet end. This measure serves to evaporate fuel.
Hiervon ausgehend hat sich die Erfindung die Weiterentwicklung derartiger Heizungsgeräte mit Nachbrennem dahingehend zur Aufgabe gemacht, daß eine vollständigere Verbrennung ermöglicht wird.Proceeding from this, the invention has made the further development of such heating devices with afterburners the task of enabling more complete combustion.
Gelöst wird diese Aufgabe erfindungsgemäß dadurch, daß der Hohlzylinder so dimensioniert und der Brenner so eingestellt ist, daß der Hohlzylinder vom auslaßseitigen Ende bis zu den Öffnungen glüht und daß zwischen je zwei Öffnungen eine von innen her am Hohlzylinder befestigte Lamelle angeordnet ist.This object is achieved according to the invention in that the hollow cylinder is dimensioned and the burner is set such that the hollow cylinder glows from the outlet end to the openings and that a lamella fastened to the inside of the hollow cylinder is arranged between two openings.
Aufgrund der Tatsache, daß sich der Hohlzylinder über den gesamten Strömungsquerschnitt erstreckt, sind die vom Brenner abgehenden Flammen und Abgase zum Passieren des Hohlzylinders gezwungen und werden innerhalb des Volumens des Hohlyzlinders gehalten und können sich nicht, wie im Stande der Technik, im gesamten Brennerraum ausbreiten. Aus Gründen der Kontinuität besitzt deshalb das durchströmende Gas im Bereich der Querschnittsverengung eine höhere Geschwindigkeit und bildet folglich einen niederen statischen Druck aus, der bewirkt, daß durch die Öffnungen im Hohlzylinder Luft von außen angesaugt wird, die beim Passieren eine Verwirbelung erfährt, was eine bessere Durchmischung des im Inneren des Zylinders befindlichen Gases zur Folge hat. Durch entsprechende Einstellung des Brenners gerät der Zylinder zumindest am auslaßseitigen Rand ins Glühen, wodurch noch nicht verbranntes Brennstoff-Luft-Gemisch gezündet und folglich genutzt wird. Beide Maßnahmen bedingen eine wesentlich bessere und vollständigere Verbrennung des Brennstoffes. Die Folge sind höhere Energieausbeute bei gleicher Brennstoffmenge bzw. geringerer Energiebedarf, schadstoffärmere Zusammensetzung der Abgase, bessere Abgaswerte und insbesondere höheren Kohlendioxydgehalt sowie weitgehende Rußfreiheit und Selbstreinigung des Brennerraumes.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, as in the prior art, spread throughout the burner chamber . For reasons of continuity, the gas flowing through has a higher speed in the area of the cross-sectional constriction and consequently forms a lower static pressure, which causes air to be sucked in from 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. By adjusting the burner accordingly, the cylinder glows at least on the outlet-side edge, as a result of which the fuel-air mixture which has not yet burned is ignited and consequently used. Both measures require a much better and more complete combustion of the fuel. The results are higher energy yields with the same amount of fuel or less energy, lower pollutant composition of the exhaust gases, better exhaust gas values and in particular higher carbon dioxide content as well as largely no soot and self-cleaning of the burner chamber.
Die soeben beschriebenen erfindungsgemäßen Verbesserungen und Weiterentwicklungen von Heizkesseln eignen sich sowohl für gasförmige als auch flüssige insbesondere ölförmige Brennstoffe.The improvements and further developments of boilers according to the invention which have just been described are suitable for both gaseous and liquid, in particular oily, fuels.
Die an den Öffnungen nach innen weisenden, am Zylinder angebrachten Lamellen haben zur Folge, daß sich in den hierdurch definierten Bereichen der effektive zur Verfügung stehende Strömungsquerschnitt erniedrigt, folglich die Geschwindigkeit des dort befindlichen Gases erhöht und der Unterdruck hierdurch verstärkt wird. Die Folge ist ein verstärktes Ansaugen von Luft und zusätzlich die Erzeugung von Turbulenzen. Die Lamelle kann als einstückiges Element einer größeren Anzahl an Öffnungen zugeordnet werden oder als Einzelteil jeweils einer einzigen Öffnung.The result of the lamellae facing inwards on the openings and attached to the cylinder is that the effectively available flow cross section is reduced in the regions defined thereby, the velocity of the gas located there is consequently increased and the negative pressure is thereby increased. The result is an increased intake of air and in addition the generation of turbulence. The lamella can be assigned to a larger number of openings as a one-piece element or as a single part to a single opening.
Die Öffnungen befinden sich auf einem Kreis entlang des Mantels des Zylinders.The openings are in a circle along the jacket of the cylinder.
Der Brenner ist so eingestellt ist, daß der Hohlzylinder bis zu den auf dem Kreis liegenden Öffnungen glüht. Diese Forderung ist insofern leicht einzuhalten, da durch die Öffnungen vergleichsweise kühle Luft von außen angesaugt und diesen Bereichen des Hohlzylinders deshalb ständig Wärme entzogen wird, so daß sich eine Ausbreitung des Glühvorganges bis über den Kreis hinaus durch entsprechende Einstellung leicht vermeiden und unterbinden läßt.The burner is set so that the hollow cylinder glows up to the openings on the circle. This requirement is easy to meet, since comparatively cool air is sucked in from the outside through the openings and heat is therefore constantly removed from these areas of the hollow cylinder, so that spreading of the annealing process beyond the circle can be easily avoided and prevented by appropriate setting.
Die Ausgestaltung nach Anspruch 2 bewirkt eine längere Verweildauer der abströmenden Rauchgase im Brennerraum und damit eine verbesserte Wärmeabgabe. Hierbei steht im Rahmen der Erfindung grundsätzlich frei, ob sich die verschlossene Stirnseite der jeweiligen Zylinder am einlaßseitigen oder am auslaßseitigen Ende des Hohlzylinders befinden. So ist ausdrücklich der Fall umfaßt, daß ein Zylinder mit seiner geschlossenen Stimseite am Brennerrohr anliegend und dieses umgebend außerhalb und koaxial zum Hohlzylinder verläuft und auf diese Weise die Rückführung von Luft aus dem auslaßseitigen erhitzten Bereich zurück zum Einlaß zwischen Brennerrohr und Hohlzylinder erleichtert.The embodiment according to claim 2 causes a longer residence time of the outflowing flue gases in the burner chamber and thus an improved heat emission. In the context of the invention, it is fundamentally free whether the closed end of the respective cylinder is located on the inlet-side or on the outlet-side end of the hollow cylinder. Thus, the case is expressly included that a cylinder with its closed end face adjoins and surrounds the burner tube outside and coaxially with the hollow cylinder and in this way facilitates the return of air from the heated area on the outlet side back to the inlet between the burner tube and the hollow cylinder.
Claims (2)
- Heating appliance with reheater, in which is disposed a burner chamber with burner and said reheater comprises a hollow cylinder, which spans the entire flow cross section, has openings disposed in a circle, reduces the area in cross section within said burner chamber and is mounted in the area of the outlet of the burner pipe at a distance thereof wherein said hollow cylinder is dimensioned and said burner adjusted so that said hollow cylinder glows from the outlet end to the openings and between every two openings a lamella is disposed attached to said hollow cylinder from the inside.
- Heating appliance according to claim 1 wherein said hollow cylinder is surrounded within said burner chamber by one or more coaxial cylinders which are closed at one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT87902411T ATE66526T1 (en) | 1986-04-29 | 1987-04-29 | HEATER WITH AFTERBURNER. |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3614440 | 1986-04-29 | ||
| DE19863614440 DE3614440A1 (en) | 1986-04-29 | 1986-04-29 | HEATING UNIT WITH AFTER BURNER |
| PCT/DE1987/000189 WO1987006681A1 (en) | 1986-04-29 | 1987-04-29 | Heating device with reheater |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0266377A1 EP0266377A1 (en) | 1988-05-11 |
| EP0266377B1 EP0266377B1 (en) | 1991-08-21 |
| EP0266377B2 true EP0266377B2 (en) | 1994-05-04 |
Family
ID=6299752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87902411A Expired - Lifetime EP0266377B2 (en) | 1986-04-29 | 1987-04-29 | Heating device with reheater |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0266377B2 (en) |
| AT (1) | ATE66526T1 (en) |
| DE (3) | DE3614440A1 (en) |
| WO (1) | WO1987006681A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3835158A1 (en) * | 1988-10-12 | 1990-04-19 | Vaillant Joh Gmbh & Co | Device for utilising the exhaust gases of combustion-heated devices |
| DE19534319C2 (en) * | 1995-09-15 | 1997-12-18 | Ceramtec Ag | Use for a boiler system, boiler system and method for operating the boiler system |
| DE19732607A1 (en) * | 1997-07-29 | 1999-02-04 | Schneidawind Melitta | Afterburner for a heater |
| CN107461737B (en) * | 2017-08-10 | 2019-02-22 | 北京一亚高科能源科技有限公司 | A kind of non-pressure air compartment |
Family Cites Families (11)
| 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 (en) * | 1958-08-16 | 1964-07-02 | Willi Broedlin | BURNERS FOR LIQUID HYDROCARBONS, IN PARTICULAR FOR HEATING OIL. |
| FR1532452A (en) * | 1967-05-26 | 1968-07-05 | Airflam Le Chauffage Domestiqu | Improvement in combustion pots for oil stoves and similar heating appliances |
| DE2059693A1 (en) * | 1970-12-04 | 1972-06-15 | Werner Pieper | Liquid fuel burners |
| DE7429675U (en) * | 1974-09-03 | 1976-04-01 | Interliz Anstalt, Vaduz | DEVICE FOR IMPROVING THE BURN-OUT OF THE FLAME OF FAN OIL BURNERS IN BOILERS OR THE LIKE |
| DE2442170A1 (en) * | 1974-09-03 | 1976-03-11 | Interliz Anstalt | Oil burner flame combustion device - has drop catching pipe extension of burner mouth piece with hot gas intake holes |
| US4174941A (en) * | 1977-12-06 | 1979-11-20 | The National Drying Machinery Corp. of America | Sleeve and damper for oil burner |
| DE2820297A1 (en) * | 1978-05-10 | 1979-11-15 | Werner Mueller | Glow ignited oil of gas burner - has additional consumable tube for flame arranged upstream of combustion space tube |
| DE2918416C2 (en) * | 1979-05-08 | 1985-05-15 | Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln | Gasification oil burner |
| DE3048044C2 (en) * | 1980-12-19 | 1983-06-09 | Helmut Dipl.-Chem. 8000 München Ulrich | Flame tube made of heat-resistant material for burners, especially oil burners |
| DE8422852U1 (en) * | 1984-08-01 | 1985-12-05 | Reichstein, Manfred, 5600 Wuppertal | Mixing device for oil burners |
-
1986
- 1986-04-29 DE DE19863614440 patent/DE3614440A1/en not_active Withdrawn
-
1987
- 1987-04-29 AT AT87902411T patent/ATE66526T1/en not_active IP Right Cessation
- 1987-04-29 DE DE8717809U patent/DE8717809U1/en not_active Expired - Lifetime
- 1987-04-29 WO PCT/DE1987/000189 patent/WO1987006681A1/en active IP Right Grant
- 1987-04-29 EP EP87902411A patent/EP0266377B2/en not_active Expired - Lifetime
- 1987-04-29 DE DE8787902411T patent/DE3772322D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0266377B1 (en) | 1991-08-21 |
| WO1987006681A1 (en) | 1987-11-05 |
| ATE66526T1 (en) | 1991-09-15 |
| DE8717809U1 (en) | 1990-04-19 |
| DE3614440A1 (en) | 1987-11-05 |
| DE3772322D1 (en) | 1991-09-26 |
| EP0266377A1 (en) | 1988-05-11 |
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