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EP0162445B1 - Radiation burner - Google Patents

Radiation burner Download PDF

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Publication number
EP0162445B1
EP0162445B1 EP85106210A EP85106210A EP0162445B1 EP 0162445 B1 EP0162445 B1 EP 0162445B1 EP 85106210 A EP85106210 A EP 85106210A EP 85106210 A EP85106210 A EP 85106210A EP 0162445 B1 EP0162445 B1 EP 0162445B1
Authority
EP
European Patent Office
Prior art keywords
reflector
mixing chamber
burner
designed
radiant 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
EP85106210A
Other languages
German (de)
French (fr)
Other versions
EP0162445A2 (en
EP0162445A3 (en
Inventor
Dieter Dipl.-Ing. Freisenhausen
Reinhold Dipl.-Ing. Brüggemann
Alfred Dipl.-Ing. Hein
Lothar Dipl.-Ing. Reitsch
Klaus Wernicke
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.)
GoGaS Goch GmbH and Co KG
Original Assignee
GoGaS Goch GmbH and Co KG
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 GoGaS Goch GmbH and Co KG filed Critical GoGaS Goch GmbH and Co KG
Priority to AT85106210T priority Critical patent/ATE52134T1/en
Publication of EP0162445A2 publication Critical patent/EP0162445A2/en
Publication of EP0162445A3 publication Critical patent/EP0162445A3/en
Application granted granted Critical
Publication of EP0162445B1 publication Critical patent/EP0162445B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/04—Stoves or ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate
    • F24C3/042—Stoves
    • 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
    • F24C1/00—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified
    • F24C1/08—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating
    • F24C1/10—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating with reflectors

Definitions

  • the invention relates to a radiant burner in which a burner for pressurized fuel and a one-piece mixing chamber of rectangular plan are attached to a flat and horizontally in the installed state vertex of a reflector, which reflector diverges from the vertex downwards while a Connection pipe designed for self-suction of the combustion air penetrates one of the narrow end faces of the reflector.
  • Such a burner is known from US-A-3 805 736.
  • the entire bottom surface of the mixing chamber is connected to the top surface of the reflector.
  • the reflector is to be air-cooled by means of a fan in order to prevent an increase in temperature due to heating by means of the combustion gases.
  • the latter are discharged downwards with the exiting fan air, whereby they mix with it while cooling noticeably.
  • the invention is based on the object of designing the radiant burner in such a way that waste heat utilization of the combustion gases is made possible and that the radiant power is thereby substantially improved.
  • recuperative air preheating is created, in which the combustion gases are acted directly on the mixing chamber of the burner and on all sides thereof, since the burner and mixing chamber are completely accommodated within the reflector space.
  • the reflector is held at a distance from the apex of the reflector, so that the apex surface is used to allow a flow around the mixing chamber.
  • the size of the apex area leads to an increased heat transfer both for the radiation into the room to be heated and for the radiation to the mixing chamber to be heated for the purpose of preheating.
  • the connecting pipe for the self-priming of the combustion air is advantageously attached to the outside wall of the reflector.
  • the top of the reflector can be provided with a ceramic plate with good heat insulation properties.
  • a ceramic plate When heated on the surface, such a ceramic plate can emit heat with a very high emission coefficient. Accordingly, while the burner plate acts as the primary radiation surface, the vertex of the reflector, which is ceramic-clad in the manner mentioned, can act as a secondary heating surface.
  • a circulating flow of the combustion gas occurs within the reflector space, which flows continuously from the burner and, after having filled the reflector space, emerge from the latter along one of the lower edges.
  • the walls of the mixing chamber which extend from the burner plate and extend in the direction of the apex are expediently made concave. In this way, they adapt geometrically to the flow being formed and further increase the heat exchange surface.
  • a further increase in heat radiation is achieved in that the reflector walls also experience considerable heating.
  • they are advantageously made of sheet metal panels that are thermally insulated on the outside.
  • a reflector 6 can be seen, which is formed from reflector walls 12 diverging downwards.
  • the front end wall lying in the plane of the drawing is not shown.
  • the plan of the reflector 6 is therefore rectangular.
  • the plates of the burner 1 and the mixing chamber 2 are also of a rectangular plan.
  • a flow of the combustion gases can form in the reflector space 3, which flows according to the streamlines 13. If the walls of the mixing chamber are made concave, as indicated in the broken line, the convective heat transfer can be increased as described.
  • the combustion gases finally flow out of the reflector chamber 3 along the lower edges 4, 5 of the reflector 6 after they have largely transferred their sensible heat to the mixing chamber 2, the reflector walls 12 and the ceramic plate provided in the reflector apex.
  • the connecting pipe for the supply of fuel gas and combustion air passes through, as denoted by 7 ', one of the narrow sides of the reflector. It can be attached to the outside in a continuation, as shown with 7. In a manner not shown, fuel gas is introduced in the direction of arrow 14, which draws in the combustion air.
  • the reflector can also have a wall which is parabolic in cross section.
  • this has the advantage that it can be easily bent from a single rectangular sheet metal blank.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1. Radiant burner, in which a burner for pressurized fuel together with a one-piece mixing chamber (2) of rectangular layout is attached to a plane and in mounted position horizontally arranged top of a reflector (6), said reflector (6) diverging from the top downwards, whereas a connecting pipe (7') designed for the self-suction of the combustion air passes through one of the narrow faces of the reflector (6), characterized in that the burner (1) with the upstream mixing chamber (2) is attached by means of webs (8) in such a way to the top of the reflector (6) that it lies within a reflector chamber (3) designed for the admission of the combustion gases, and that the area (9) which forms the top of the reflector (6) is larger than a plate of the burner (1) which limits the mixing chamber (2) downwards, in order to enable a flow around the mixing chamber.

Description

Die Erfindung bezieht sich auf einen Strahlungsbrenner, bei welchem ein Brenner für unter Druck stehenden Brennstoff und eine damit einteilige Mischkammer von rechteckigem Grundriß an einem ebenen sowie im Einbauzustand horizontal liegenden Scheitel eines Reflektors befestigt sind, welcher Reflektor vom Scheitel aus nach unten divergiert, während ein für die Selbstansaugung der Verbrennungsluft ausgeführtes Anschlußrohr eine der schmalen Stirnseiten des Reflektors durchsetzt.The invention relates to a radiant burner in which a burner for pressurized fuel and a one-piece mixing chamber of rectangular plan are attached to a flat and horizontally in the installed state vertex of a reflector, which reflector diverges from the vertex downwards while a Connection pipe designed for self-suction of the combustion air penetrates one of the narrow end faces of the reflector.

Ein derartiger Brenner ist nach der US-A-3 805 736 bekannt. Dabei ist die Mischkammer mit ihrer gesamten Bodenfläche an die Scheitelfläche des Reflektors angeschlossen. Der Reflektor soll mittels Gebläse luftgekühlt werden, um einen Temperaturanstieg infolge Aufheizung mittels der Verbrennungsgase zu verhindern. Letztere werden mit der austretenden Gebläseluft nach unten abgeleitet, wobei sie sich mit dieser unter merklicher Abkühlung vermischen.Such a burner is known from US-A-3 805 736. The entire bottom surface of the mixing chamber is connected to the top surface of the reflector. The reflector is to be air-cooled by means of a fan in order to prevent an increase in temperature due to heating by means of the combustion gases. The latter are discharged downwards with the exiting fan air, whereby they mix with it while cooling noticeably.

Die Ableitung der Verbrennungsgase unmittelbar nach oben ist nach der FR-A-2 394 022 bekannt. Hierbei sind die Reflektoren nach oben offen ausgebildet, so daß die Verbrennungsgase ohne Bildung eines Staues entsprechend ihrer Auftriebskräfte abströmen können.The discharge of the combustion gases directly upwards is known from FR-A-2 394 022. Here, the reflectors are open at the top, so that the combustion gases can flow away according to their buoyancy forces without the formation of a backlog.

Vom einleitend beschriebenen Stand der Technik ausgehend liegt der Erfindung die Aufgabe zugrunde, den Strahlungsbrenner derart auszubilden, daß eine Abwärmenutzung der Verbrennungsgase ermöglicht wird, und daß die Strahlungsleistung hierdurch eine wesentliche Verbesserung erfährt.Starting from the prior art described in the introduction, the invention is based on the object of designing the radiant burner in such a way that waste heat utilization of the combustion gases is made possible and that the radiant power is thereby substantially improved.

Die Efindung löst diese Aufgabenstellung durch die in den Patentansprüchen gemachten Vorschläge.The invention solves this problem by means of the suggestions made in the patent claims.

Somit wird erfindungsgemäß eine rekuperative Luftvorwärmung geschaffen, bei welcher die Verbrennungsgase unmittelbar auf die Mischkammer des Brenners sowie von allen Seiten derselben auf diese zur Einwirkung gebracht werden, da Brenner und Mischkammer vollständig innerhalb des Reflektorraumes aufgenommen sind. Mittels der Stege wird der Reflektor auf Abstand vom Scheitel des Reflektors gehalten, so daß die Scheitelfläche genutzt wird, um eine Umströmung der Mischkammer zu ermöglichen. Die Größe der Scheitelfläche führt zu einer vermehrten Wärmeübertragung sowohl für die Abstrahlung in den zu beheizenden Raum als auch für die Abstrahlung auf die zwecks Vorwärmung zu erhitzende Mischkammer.Thus, according to the invention, recuperative air preheating is created, in which the combustion gases are acted directly on the mixing chamber of the burner and on all sides thereof, since the burner and mixing chamber are completely accommodated within the reflector space. By means of the webs, the reflector is held at a distance from the apex of the reflector, so that the apex surface is used to allow a flow around the mixing chamber. The size of the apex area leads to an increased heat transfer both for the radiation into the room to be heated and for the radiation to the mixing chamber to be heated for the purpose of preheating.

Das Anschlußrohr für die Selbstansaugung der Verbrennungs luft ist vorteilhaft außerhalb des Reflektors an dessen Außenwand befestigt.The connecting pipe for the self-priming of the combustion air is advantageously attached to the outside wall of the reflector.

Im Interesse eines guten Wärmehaushaltes läßt sich der Scheitel des Reflektors mit einer Keramikplatte von guten Wärmeisolationseigenschaften versehen. Bei oberflächlicher Erhitzung vermag eine derartige Keramikplatte mit einem sehr hohen Emissionskoeffizienten Wärme abzustrahlen. Während demnach die Platte des Brenners als primäre Strahlungsfläche wirkt, vermag der in der genannten Weise keramisch verkleidete Scheitel des Reflektors als sekundäre Heizfläche zu wirken.In the interest of a good heat balance, the top of the reflector can be provided with a ceramic plate with good heat insulation properties. When heated on the surface, such a ceramic plate can emit heat with a very high emission coefficient. Accordingly, while the burner plate acts as the primary radiation surface, the vertex of the reflector, which is ceramic-clad in the manner mentioned, can act as a secondary heating surface.

Innerhalb des Reflektorraumes stellt sich eine Zirkulationsströmung des Verbrennungsgases ein, die vom Brenner fortwährend abströmen und, nachdem sie den Reflektorraum ausgefüllt haben, aus letzterem entlang einer der Unterkanten austreten. Um den Wärmeaustausch zwischen der Mischkammer und der Zirkulationsströmung zu vergrößern, werden die von der Brennerplatte ausgehenden und sich in Richtung auf den Scheitel erstreckenden Wände der Mischkammer zweckmäßig konkav ausgeführt. Sie passen sich damit der sich bildenden Strömung geometrisch an und vergrößern weiterhin die Wärmeaustauschfläche.A circulating flow of the combustion gas occurs within the reflector space, which flows continuously from the burner and, after having filled the reflector space, emerge from the latter along one of the lower edges. In order to increase the heat exchange between the mixing chamber and the circulation flow, the walls of the mixing chamber which extend from the burner plate and extend in the direction of the apex are expediently made concave. In this way, they adapt geometrically to the flow being formed and further increase the heat exchange surface.

Eine weitere Steigerung der Wärmeabstrahlung wird dadurch erreicht, daß auch dei Reflektorwände eine erhebliche Aufheizung erfahren. Zu diesem Zweck sind sie vorteilhaft aus außenseitig wärmeisolierten Blechtafeln gestaltet.A further increase in heat radiation is achieved in that the reflector walls also experience considerable heating. For this purpose, they are advantageously made of sheet metal panels that are thermally insulated on the outside.

Zur weiteren Veranschaulichung der Erfindung wird auf die ein Ausführungsbeispiel darstellende Zeichnung Bezug genommen.To further illustrate the invention, reference is made to the drawing illustrating an exemplary embodiment.

Man erkannt einem Reflektor 6, das aus nach unten divergierenden Reflektorwänden 12 gebildet ist. Die vordere, in der Zeichnungsebene liegende Stirnwand ist nicht dargestellt. Der Grundriß des Reflektors 6 ist mithin rechteckig. Gleichfalls von rechteckigem Grundriß sind die Platten des Brenners 1 und die Mischkammer 2. Letztere ist mit Stegen 8 an die horizontale Fläche 9 des Scheitels des Reflektorraums 3 angeschlossen. Somit kann sich im Reflektorraum 3 eine Strömung der Verbrennungsgase ausbilden, die entsprechend den Stromlinien 13 verläuft. Wenn die Wände der Mischkammer konkav ausgeführt werden, wie in der gestrichelten Darstellung bezeichnet, läßt sich der konvektive Wärmeübergang, wie beschrieben, erhöhen. Die Verbrennungsgase strömen schließlich entlang der unteren Kanten 4,5 des Reflektors 6 aus dem Reflektorraum 3 ab, nachdem sie ihre fühlbare Wärme zum erheblichen Teil auf die Mischkammer 2, die Reflektorwände 12 und die im Reflektorscheitel vorgesehene Keramikplatte übertragen haben.A reflector 6 can be seen, which is formed from reflector walls 12 diverging downwards. The front end wall lying in the plane of the drawing is not shown. The plan of the reflector 6 is therefore rectangular. The plates of the burner 1 and the mixing chamber 2 are also of a rectangular plan. Thus, a flow of the combustion gases can form in the reflector space 3, which flows according to the streamlines 13. If the walls of the mixing chamber are made concave, as indicated in the broken line, the convective heat transfer can be increased as described. The combustion gases finally flow out of the reflector chamber 3 along the lower edges 4, 5 of the reflector 6 after they have largely transferred their sensible heat to the mixing chamber 2, the reflector walls 12 and the ceramic plate provided in the reflector apex.

Das Anschlußrohr für die Versorgung mit Brenngas und Verbrennungsluft durchsetzt, wie mit 7' bezeichnet, eine der Schmalseiten des Reflektors. Es kann in Weiterführung an der Außenseite befestigt werden, wie mit 7 dargestellt. In nicht dargestellter Weise wird Brenngas in Richtung des Pfeiles 14 eingeführt, welches sich die Verbrennungsluft ansaugt.The connecting pipe for the supply of fuel gas and combustion air passes through, as denoted by 7 ', one of the narrow sides of the reflector. It can be attached to the outside in a continuation, as shown with 7. In a manner not shown, fuel gas is introduced in the direction of arrow 14, which draws in the combustion air.

Der Reflektor kann nach einer weiteren Ausführungsform der Erfindung auch eine im Querschnitt parabolische Wandung aufweisen. Dieser hat über die von parabolischen Reflektoren her bekannte Reflektionswirkung hinausgebend noch den Vorteil, daß man ihn aus einem einzigen rechteckigen Blechzuschnitt leicht biegen kann.According to a further embodiment of the invention, the reflector can also have a wall which is parabolic in cross section. In addition to the reflection effect known from parabolic reflectors, this has the advantage that it can be easily bent from a single rectangular sheet metal blank.

Claims (7)

1. Radiant burner, in which a burner for pressurized fuel together with a one-piece mixing chamber (2) of rectangular layout is attached to a plane and in mounted position horizontally arranged top of a reflector (6), said reflector (6) diverging from the top downwards, whereas a connecting pipe (7') designed for the self-suction of the combustion air passes through one of the narrow faces of the reflector (6), characterized in that
the burner (1) with the upstream mixing chamber (2) is attached by means of webs (8) in such a way to the top of the reflector (6) that it lies within a reflector chamber (3) designed for the admission of the combustion gases,
and that the area (9) which forms the top of the reflector (6) is larger than a plate of the burner (1) which limits the mixing chamber (2) downwards, in order to enable a flow around the mixing chamber.
2. Radiant burner according to patent Claim 1, characterized in that
the connecting pipe (7) of the mixing chamber (2) designed for the self-suction of the combustion air is attached in its extension outside the reflector (6) to the outer wall of the reflector (6).
3. Radiant burner according to one of patent Claims 1 or 2, characterized in that
the top of the reflector (6) is provided with a ceramic plate (10) featuring good heat-insulating properties.
4. Radiant burner according to one of patent Claims 1 to 3, characterized in that
the mixing chamber is designed with concave walls (11) starting from the plate of the burner (1) and extending towards the top of the reflector.
5. Radiant burner according to one of patent Claims 1 to 4, characterized in that
the reflector walls (12) are made of outside heat-insulated steel sheets.
6. Radiant burner according to one of patent Claims 1 to 5, characterized in that
the reflector features a parabolic cross-section wall.
7. Radiant burner according to one of patent Claims 1 to 6, characterized in that
the burner (1) together with its mixing chamber (2) is slewable about its longitudinal axis.
EP85106210A 1984-05-22 1985-05-21 Radiation burner Expired - Lifetime EP0162445B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85106210T ATE52134T1 (en) 1984-05-22 1985-05-21 RADIANT BURNER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3418977 1984-05-22
DE19843418977 DE3418977A1 (en) 1984-05-22 1984-05-22 RADIATION BURNER

Publications (3)

Publication Number Publication Date
EP0162445A2 EP0162445A2 (en) 1985-11-27
EP0162445A3 EP0162445A3 (en) 1987-01-07
EP0162445B1 true EP0162445B1 (en) 1990-04-18

Family

ID=6236505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85106210A Expired - Lifetime EP0162445B1 (en) 1984-05-22 1985-05-21 Radiation burner

Country Status (3)

Country Link
EP (1) EP0162445B1 (en)
AT (1) ATE52134T1 (en)
DE (2) DE3418977A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE88259T1 (en) * 1989-05-24 1993-04-15 Hagos Kachelofen Luftheizbauer TILED STOVE WITH GAS HEATING DEVICE.
DE10246431B4 (en) * 2002-10-04 2012-05-16 Kübler Gmbh Infrared heating, in particular for heating halls
WO2004090424A2 (en) * 2003-04-01 2004-10-21 Radiant Optics, Inc. Radiant energy source systems, devices and methods
US7116900B2 (en) 2003-04-01 2006-10-03 Radiant Optics, Inc. Radiant energy source systems, devices, and methods capturing, controlling, or recycling gas flows
DE102009021158A1 (en) 2009-05-13 2010-11-18 Kübler Gmbh Infrared heating, in particular for heating halls

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1120291A (en) * 1955-02-01 1956-07-03 Int D Applic Des Brevets Schwa Radiation device for the production of radiating surfaces
US3447531A (en) * 1965-03-16 1969-06-03 Robert Von Linde Radiation heating apparatus
US3805763A (en) * 1972-08-21 1974-04-23 E Cowan Flush-mountable, self-cooling gas-fired heater
FR2394022A1 (en) * 1977-06-08 1979-01-05 Elf Antargaz Adjustable radiant gas heater - has one or more radiant panels which can be height adjusted or tilted under reflector

Also Published As

Publication number Publication date
EP0162445A2 (en) 1985-11-27
ATE52134T1 (en) 1990-05-15
EP0162445A3 (en) 1987-01-07
DE3577227D1 (en) 1990-05-23
DE3418977A1 (en) 1986-02-13

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